阅读说明：本技术 一种双向自动车削专机 (Two-way automatic turning special plane ) 是由 张毅 杜杨鸿 潘华峰 钟志伟 欧杰 于 2019-10-25 设计创作，主要内容包括：本发明提出了一种双向自动车削专机,在床身上固设有刀架,刀架的左侧设有第一主轴和驱动第一主轴横向纵向运动的第一横纵向移动机构,刀架的右侧色设有第二主轴和驱动第二主轴横向纵向运动的第二横纵向移动机构,该自动车削专机还包括上料机构、推料结构和下料机构。本发明的双向自动车削专机自动化程度高,降低了人的劳动强度。第一主轴夹头中工件的一端加工完毕后,通过第一主轴和第二主轴的移动对接功能将工件输送至第二主轴夹头中,对第二主轴夹头中工件的另一端进行加工,即一次装夹完成工件两端的加工。而且在加工第二主轴上的工件的另一端时,可同时加工第一主轴上的下一工件的一端,即可同时加工两个零件,加工效率高。(The invention provides a special bidirectional automatic turning machine, wherein a tool rest is fixedly arranged on a machine body, a first main shaft and a first transverse and longitudinal moving mechanism for driving the first main shaft to transversely and longitudinally move are arranged on the left side of the tool rest, a second main shaft and a second transverse and longitudinal moving mechanism for driving the second main shaft to transversely and longitudinally move are arranged on the right side of the tool rest, and the special automatic turning machine further comprises a feeding mechanism, a material pushing structure and a discharging mechanism. The bidirectional automatic turning special machine has high automation degree, and reduces the labor intensity of people. After one end of the workpiece in the first spindle chuck is machined, the workpiece is conveyed into the second spindle chuck through the moving butt joint function of the first spindle and the second spindle, and the other end of the workpiece in the second spindle chuck is machined, namely, the machining of two ends of the workpiece is completed through one-time clamping. And when the other end of the workpiece on the second main shaft is processed, one end of the next workpiece on the first main shaft can be simultaneously processed, so that two parts can be simultaneously processed, and the processing efficiency is high.)

1. A bidirectional automatic turning special machine comprises a machine body and a tool rest arranged on the machine body, and is characterized in that the machine body is provided with a first main shaft, a workpiece feeding position, a second main shaft, a first transverse and longitudinal moving mechanism for driving the first main shaft to transversely and longitudinally move, a second transverse and longitudinal moving mechanism for driving the second main shaft to transversely and longitudinally move, a material pushing mechanism for pushing a workpiece at the workpiece feeding position into a chuck of the first main shaft, and a moving device for conveying the workpiece on the first main shaft to the second main shaft;

two sets of cutters are arranged on the tool rest and are used for respectively processing workpieces on the first main shaft and the second main shaft;

the first main shaft drives the workpiece to rotate, one set of tools on the tool rest processes one end of the workpiece, the workpiece is conveyed to the second main shaft after one end of the workpiece is processed, the second main shaft drives the workpiece to rotate, and the other set of tools on the tool rest processes the other end of the workpiece.

2. The special machine for bidirectional automatic turning of claim 1, wherein the pushing mechanism comprises a push rod for pushing the workpiece, and a pushing driving member for moving the push rod in a transverse direction is fixedly connected to an end of the push rod away from the workpiece; the lathe bed is fixedly connected with a lower seat, the upper part of the lower seat is connected with a gland through an elastic part, and the accommodating space between the lower seat and the gland is the workpiece feeding position.

3. The special machine for bidirectional automatic turning as claimed in claim 1 or 2, wherein the first spindle and the second spindle are respectively located at two sides of the tool rest and are oppositely arranged, and the chuck of the first spindle and the chuck of the second spindle are both automatic locking chucks;

the first transverse and longitudinal moving mechanism and the second transverse and longitudinal moving mechanism respectively drive the first main shaft and the second main shaft to move transversely to approach or depart from each other;

the moving device is composed of the first transverse and longitudinal moving mechanism and the first main shaft, and when the first main shaft and the second main shaft are close to each other, the chuck of the first main shaft can convey the workpiece in the first main shaft to the chuck of the second main shaft.

4. The special machine for bidirectional automatic turning as claimed in claim 1 or 2, further comprising a loading device, wherein the loading device comprises a vibration material tray, an outlet of the vibration material tray is connected with an upper rolling material channel which is arranged in a downward inclination manner, and an outlet of the upper rolling material channel is connected with a lifting mechanism which conveys the workpiece to the loading position of the workpiece.

5. The special machine for bidirectional automatic turning of claim 4, wherein the lifting mechanism comprises a feeding cylinder at the outlet of the upper rolling material channel, a supporting plate fixed at the rear part of the machine body, lifting cylinders respectively arranged at the rear and front sides of the supporting plate and a material channel arranged obliquely downwards;

the tail part of the telescopic shaft of the lifting cylinder is connected with a loading plate which is arranged in a downward inclination manner; a material port communicated with the inlet of the material inlet channel is formed in the supporting plate, and the outlet of the material inlet channel is positioned at the material loading position of the workpiece;

the feeding cylinder can push the workpieces at the outlet of the upper rolling material channel to the carrying plate one by one, and the lifting cylinder can convey the workpieces on the carrying plate to the position of the supporting plate opening and then the workpiece enters the feeding channel from the material opening.

6. The special bidirectional automatic turning machine as claimed in claim 1, 2 or 5, further comprising a blanking device, wherein the blanking device comprises a blanking box, a lower rolling material channel which is communicated with the blanking box and is arranged obliquely downwards, and a material collecting disc which is positioned at an outlet of the lower rolling material channel;

a centering plate is arranged on one side of the blanking box close to the second main shaft chuck, a centering large opening and a centering small opening which are communicated with each other are formed in the centering plate, the size of the centering large opening is larger than that of the workpiece, and the size of the centering small opening is smaller than that of the workpiece;

the second main shaft is enabled to move transversely, and the second main shaft can enable the workpiece to completely enter the blanking box through the centering large opening; and the second main shaft is enabled to move longitudinally, and the second main shaft can enable the workpiece to move to the centering small opening and be clamped in the blanking box by the centering small opening.

7. The special bidirectional automatic turning machine according to claim 1, 2 or 5, wherein the special bidirectional automatic turning machine can machine the outer wall surface of the workpiece and/or two end surfaces of the workpiece;

the first transverse and longitudinal moving mechanism/the second transverse and longitudinal moving mechanism drives the first main shaft/the second main shaft to axially and radially move so as to realize axial and radial feeding of workpieces;

and one set of tools on the tool rest is used for processing the first end surface and/or the outer wall surface of the workpiece on the first main shaft, and the other set of tools on the tool rest is used for processing the second end surface and/or the outer wall surface of the workpiece on the second main shaft.

8. The special machine for bi-directional automatic turning of claim 7, wherein the first spindle chuck is an automatic locking chuck and the second spindle chuck is an automatic locking expanding sleeve.

9. The special machine for bidirectional automatic turning of claim 7, wherein the first transverse and longitudinal moving mechanism comprises a bracket fixed on the machine body, a first supporting plate longitudinally and slidably connected to the bracket, a first driving mechanism for driving the first supporting plate to move longitudinally, a second supporting plate transversely and slidably connected to the first supporting plate, and a second driving mechanism for driving the second supporting plate to move transversely, and the first spindle is fixed on the second supporting plate;

the second transverse and longitudinal moving mechanism and the first transverse and longitudinal moving mechanism are identical in structure and are symmetrically arranged.

10. The special machine for bidirectional automatic turning of claim 9, wherein the first driving mechanism comprises a first motor fixed to the bracket and a first guide rail, and the first supporting plate is slidably connected to the first guide rail through a first sliding block; the output shaft of the first motor is directly or indirectly connected with a first screw rod which rotates along with the output shaft, the axis of the output shaft of the first motor is coaxial or parallel to the axis of the first screw rod, and a first screw rod sleeve fixedly connected with the first supporting plate is in threaded connection with the first screw rod;

the second driving mechanism comprises a second motor and a second sliding block which are fixed on the first supporting plate, and the second supporting plate is connected to the second sliding block in a sliding mode through a second guide rail; the output shaft of the second motor is directly or indirectly connected with a second screw rod which rotates along with the output shaft, the axis of the output shaft of the second motor is coaxial or parallel to the axis of the second screw rod, and a second screw rod sleeve fixedly connected with the second supporting plate is in threaded connection with the second screw rod.

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a bidirectional automatic turning special machine.

Background

A lathe is a machine tool for turning a rotating workpiece mainly with a lathe tool. When a common turning machine tool is used for processing the outer wall and two end faces of a shaft or disc workpiece, only one-way processing can be carried out, namely, the part clamped by a main shaft chuck cannot be processed; if the workpiece needs to be processed in a two-way mode, only one end of the workpiece can be cut and processed, and then the other end of the workpiece is cut after the workpiece is turned around and clamped again; for operators, the two-way processing needs two times of clamping, so that the working strength is high, and the efficiency is low. Moreover, the feeding and the discharging of the common lathe are completed by operators, so that the automation degree is low, the efficiency is low, and the labor cost is high.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and aims to provide a bidirectional automatic turning special machine which can automatically send a workpiece into a spindle chuck, can carry out bidirectional processing on the workpiece and solve the problem of low efficiency of the conventional unidirectional turning.

In order to achieve the purpose, the invention adopts the following technical scheme: a special bidirectional automatic turning machine comprises a machine body and a tool rest arranged on the machine body, wherein the machine body is provided with a first main shaft, a workpiece feeding position, a second main shaft, a first transverse and longitudinal moving mechanism for driving the first main shaft to transversely and longitudinally move, a second transverse and longitudinal moving mechanism for driving the second main shaft to transversely and longitudinally move, a material pushing mechanism for pushing a workpiece at the workpiece feeding position into a chuck of the first main shaft, and a moving device for conveying the workpiece on the first main shaft to the second main shaft;

two sets of cutters are arranged on the tool rest and are used for respectively processing workpieces on the first main shaft and the second main shaft;

the first main shaft drives the workpiece to rotate, one set of tools on the tool rest processes one end of the workpiece, the workpiece is conveyed to the second main shaft after one end of the workpiece is processed, the second main shaft drives the workpiece to rotate, and the other set of tools on the tool rest processes the other end of the workpiece.

In the technical scheme, after one set of tools on the tool rest finishes processing one end of a workpiece in a first main shaft chuck, the moving device conveys the workpiece to a chuck of a second main shaft, and the other set of tools on the tool rest processes the other end of the workpiece in the second main shaft chuck; the automatic special turning machine can realize the bidirectional processing of one workpiece, namely, the processing of two ends of the workpiece is finished by one-time clamping. When the other end of the workpiece on the second main shaft is machined, one end of the next workpiece on the first main shaft can be machined simultaneously, two parts can be machined simultaneously, and machining efficiency is high.

In a preferred embodiment of the present invention, the pushing mechanism includes a push rod for pushing the workpiece, and one end of the push rod away from the workpiece is fixedly connected with a pushing driving member for moving the push rod transversely; the lathe bed is fixedly connected with a lower seat, the upper part of the lower seat is connected with a gland through an elastic part, and the accommodating space between the lower seat and the gland is used as a workpiece feeding position.

The elastic piece provides floating clamping force, the upper part of the workpiece is clamped by the gland in a floating mode and is kept stable, and the pushing driving piece pushes the workpiece into a chuck of the first spindle through the push rod. Automatic material pushing does not need manual conveying.

In a preferred embodiment of the present invention, the first spindle and the second spindle are respectively located at two sides of the tool holder and are oppositely disposed, and the chuck of the first spindle and the chuck of the second spindle are both automatic locking chucks;

the first transverse and longitudinal moving mechanism and the second transverse and longitudinal moving mechanism respectively drive the first main shaft and the second main shaft to move transversely to approach or depart from each other;

the moving device is composed of a first transverse and longitudinal moving mechanism and a first main shaft, and when the first main shaft and the second main shaft are close to each other, a chuck of the first main shaft can convey a workpiece in the first main shaft to a chuck of the second main shaft.

In the technical scheme, the first spindle and the second spindle have a movable butt joint function, and the workpiece in the first spindle chuck is conveyed to the second spindle chuck without adding an additional mechanism. The structure is simplified.

In a preferred embodiment of the invention, the workpiece feeding device further comprises a feeding device, the feeding device comprises a vibration material tray, an outlet of the vibration material tray is connected with an upper rolling material channel which is arranged in a downward inclination mode, and an outlet of the upper rolling material channel is connected with a lifting mechanism which is used for conveying the workpiece to a workpiece feeding position.

The feeding device realizes the cleaning of blank workpieces, and the workpieces move to the lifting mechanism in the upper rolling material channel by self gravity and are conveyed to the workpiece feeding position by the lifting mechanism. Manual feeding is not needed, and the labor intensity of people is reduced.

In a preferred embodiment of the invention, the lifting mechanism comprises a feeding cylinder positioned at the outlet of the upper rolling material channel, a supporting plate fixedly arranged at the rear part of the lathe bed, lifting cylinders respectively arranged at the rear and front sides of the supporting plate and a material channel arranged obliquely downwards;

the tail part of the telescopic shaft of the lifting cylinder is connected with a loading plate which is arranged in a downward inclination manner; a material port communicated with the inlet of the material inlet channel is arranged on the supporting plate, and the outlet of the material inlet channel is positioned at the material loading position of the workpiece;

the feeding cylinder can push the workpieces at the outlet of the upper rolling material channel to the carrying plate one by one, and the lifting cylinder can convey the workpieces on the carrying plate to the opening of the supporting plate material and enter the feeding channel from the material opening.

Through the arrangement of the feeding cylinder and the lifting cylinder, workpieces at the outlet of the upper rolling material channel can be conveyed to the opening of the supporting plate one by one. The object carrying plate and the feeding channel are both arranged in a downward inclined mode, when a workpiece is located at the position of the supporting plate opening, the workpiece enters the feeding channel from the object carrying plate through gravity, and then moves to the position of the workpiece feeding position through gravity.

In another preferred embodiment of the invention, the blanking device comprises a blanking box, a downward rolling material channel which is communicated with the blanking box and is arranged obliquely downwards, and a material collecting disc positioned at an outlet of the downward rolling material channel;

a centering plate is arranged on one side of the blanking box close to the second main shaft chuck, a centering large opening and a centering small opening which are communicated with each other are formed in the centering plate, the size of the centering large opening is larger than that of the workpiece, and the size of the centering small opening is smaller than that of the workpiece;

the second main shaft is enabled to move transversely, and the second main shaft can enable the workpiece to completely enter the blanking box through the centering large opening; the second main shaft is enabled to move longitudinally, and the second main shaft enables the workpiece to move to the center mouthpieces and be clamped in the blanking box.

The blanking device realizes automatic blanking of the processed workpiece, manual blanking is not needed, and labor intensity of people is reduced. A material collecting disc is arranged at the outlet of the lower rolling material channel, so that the processed workpieces can be conveniently collected in a centralized manner.

In another preferred embodiment of the invention, the special bidirectional automatic turning machine can machine the outer wall surface of the workpiece and/or two end surfaces of the workpiece;

the first transverse and longitudinal moving mechanism/the second transverse and longitudinal moving mechanism drives the first main shaft/the second main shaft to move axially and radially, so that the axial and radial feeding of the workpiece is realized;

one set of tools on the tool rest machine a first end surface and/or an outer wall surface of a workpiece on the first spindle, and the other set of tools on the tool rest machine a second end surface and/or an outer wall surface of a workpiece on the second spindle.

The automatic turning special machine can be used for processing the outer wall surfaces of the shafts or discs and/or the two end surfaces of the workpieces, and is wide in processing range. When the machine tool rest is not moved during machining, the axial and radial feeding of the workpiece is realized by driving the first main shaft/the second main shaft to axially and radially move by the first transverse and longitudinal moving mechanism/the second transverse and longitudinal moving mechanism.

In another preferred embodiment of the present invention, the first spindle chuck is an automatic locking chuck and the second spindle chuck is an automatic locking expanding sleeve.

In another preferred embodiment of the present invention, the first transverse and longitudinal moving mechanism includes a bracket fixed on the bed, a first supporting plate longitudinally slidably connected to the bracket, a first driving mechanism for driving the first supporting plate to move longitudinally, a second supporting plate transversely slidably connected to the first supporting plate, and a second driving mechanism for driving the second supporting plate to move transversely, and the first spindle is fixed on the second supporting plate;

the second transverse and longitudinal moving mechanism and the first transverse and longitudinal moving mechanism are the same in structure and are symmetrically arranged.

In another preferred embodiment of the present invention, the first driving mechanism includes a first motor fixed to the bracket and a first guide rail, and the first supporting plate is slidably connected to the first guide rail by a first slider; the output shaft of the first motor is directly or indirectly connected with a first screw rod which rotates along with the output shaft, the axis of the output shaft of the first motor is coaxial or parallel to the axis of the first screw rod, and a first screw rod sleeve fixedly connected with the first supporting plate is in threaded connection with the first screw rod;

the second driving mechanism comprises a second motor and a second sliding block which are fixed on the first supporting plate, and the second supporting plate is connected to the second sliding block in a sliding mode through a second guide rail; the output shaft of the second motor is directly or indirectly connected with a second screw rod which rotates along with the output shaft, the axis of the output shaft of the second motor is coaxial or parallel to the axis of the second screw rod, and a second screw rod sleeve fixedly connected with a second supporting plate is in threaded connection with the second screw rod.

The structure of the screw rod and the screw rod sleeve has high transmission precision and reliable movement.

Compared with the prior art, the invention has the following beneficial effects:

1) the special turning machine is a bidirectional turning machine tool, and can complete turning of two ends of a workpiece only by single clamping through moving butt joint between the first main shaft and the second main shaft.

2) The special turning machine can simultaneously machine workpieces on the first main shaft and the second main shaft, and is high in machining efficiency.

3) A plurality of workpieces are conveyed to a workpiece loading position one by one according to a certain rule after being cleaned by a loading device, then are pushed into a first spindle chuck by a material pushing mechanism, after one side of the workpieces is machined in the first spindle chuck, the workpieces are conveyed into a second spindle chuck through the moving butt joint function of a first spindle and a second spindle, and after the other side of the workpieces is machined in the second spindle chuck, the workpieces are discharged by a discharging mechanism; the whole process from blanking to blanking does not need manual operation, the automation degree is high, and the labor intensity of people is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of the bidirectional automatic turning special machine according to the embodiment of the application, and a shell of a lathe is omitted.

Fig. 2 is a schematic top view structure diagram of the special bidirectional automatic turning machine according to the embodiment of the application.

Fig. 3 is a partial structural schematic diagram of a pushing mechanism in the embodiment of the present application.

Fig. 4 is a schematic layout of a feed cylinder and a carrier plate according to an embodiment of the present application.

Fig. 5 is a partial structural schematic diagram of a blanking device in an embodiment of the present application.

Fig. 6 is a partial structural schematic view of the first traverse and longitudinal movement mechanism in the embodiment of the present application.

Reference numerals in the drawings of the specification include: the machine tool comprises a machine tool body 1, a tool rest 2, a first spindle 3, a first spindle chuck 31, a second spindle 4, a second spindle chuck 41, a first transverse and longitudinal movement mechanism 5, a bracket 51, a first supporting plate 52, a first motor 531, a first guide rail 532, a first screw rod 533, a first slider 534, a second supporting plate 54, a second motor 551, a second guide rail 552, a second screw rod 553, a second slider 554, a second transverse and longitudinal movement mechanism 6, a feeding device 7, a vibration material tray 71, an upper rolling material channel 72, a lifting mechanism 73, a supporting plate 731, a material feeding channel 732, a lifting cylinder 733, a lifting cylinder telescopic shaft 733a, a carrying plate 734, a feeding cylinder 735, a feeding cylinder telescopic shaft 735a, a material pushing mechanism 8, a lower seat 81, a gland 82, a push rod 83, a connecting plate 84, a housing 85, an elastic piece 86, a material pushing mechanism 87, a discharging device 9, a lower rolling material channel 91, a material collecting tray 92, a discharging box 93, a centering plate 931, a centering, The centering large opening 93a, the centering small opening 93B, the workpiece 10, A are horizontal, and B is vertical.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The invention provides a special bidirectional automatic turning machine, which comprises a machine body 1 and a tool rest 2 arranged on the machine body 1, wherein the machine body 1 is provided with a first main shaft 3, a workpiece loading position, a second main shaft 4, a first transverse and longitudinal moving mechanism 5 for driving the first main shaft 3 to transversely and longitudinally move, a second transverse and longitudinal moving mechanism 6 for driving the second main shaft 4 to transversely and longitudinally move, a material pushing mechanism 8 for pushing a workpiece at the workpiece loading position into a first main shaft chuck 31, and a moving device for conveying the workpiece on the first main shaft 3 to the second main shaft 4, as shown in fig. 1 and 2. Two sets of cutters are arranged on the tool rest 2, and the two sets of cutters are used for processing workpieces on the first main shaft 3 and the second main shaft 4 respectively; the first main shaft 3 drives a workpiece to rotate, one set of tools on the tool rest 2 processes one end of the workpiece, the workpiece is conveyed to the second main shaft 4 after one end of the workpiece is processed, the second main shaft 4 drives the workpiece to rotate, and the other set of tools on the tool rest 2 processes the other end of the workpiece.

In the present embodiment, the tool post 2 is fixed to the middle of the bed 1 by bolts, the first traverse mechanism 5 and the first spindle 3 are provided on the left side of the tool post 2, and the second traverse mechanism 6 and the second spindle 4 are provided on the right side of the tool post 2.

The special bidirectional automatic turning machine can machine the outer wall surface of a workpiece and/or two end faces of the workpiece; specifically, the first transverse and longitudinal moving mechanism 5/the second transverse and longitudinal moving mechanism 6 drive the first main shaft 3/the second main shaft 4 to move axially and radially, so that the axial and radial feeding of the workpiece is realized.

When the workpiece pushing device works, the pushing mechanism 8 pushes the workpiece at the workpiece loading position to the first spindle chuck 31 on the left side, and then the first spindle chuck 31 clamps the left side of the workpiece; then the first transverse and longitudinal moving mechanism 5 makes the first main shaft 3 drive the workpiece to move transversely and longitudinally, so that the right end of the workpiece is positioned at the left tool of the tool rest 2, then the first main shaft 3 drives the workpiece to rotate, and the left tool processes the right side of the workpiece; when feeding is required, the first traverse/longitudinal movement mechanism 5 may move the first main shaft 3 in the traverse/longitudinal direction. After the workpiece is machined on the right side of the first spindle 3, the moving device conveys the workpiece in the first spindle chuck 31 to the second spindle chuck 41, and then the second spindle chuck 41 clamps the right side of the workpiece; similarly, the second transverse and longitudinal moving mechanism 6 makes the second spindle 4 drive the workpiece 10 to move transversely and longitudinally, so that the left end of the workpiece 10 is located at the right tool of the tool rest 2, then the second spindle 4 drives the workpiece to rotate, and the right tool processes the left side of the workpiece 10.

When the cutter on the right of the tool rest 2 is used for processing the left side of the workpiece on the second main shaft 4, the cutter on the left of the tool rest 2 can be used for simultaneously processing the right side of the next workpiece on the first main shaft 3, namely, the special turning machine can be used for simultaneously processing two parts, and the processing efficiency is high; and moreover, the material pushing mechanism 8 and the moving device are arranged, so that the workpieces are automatically clamped in the first spindle 3 and the second spindle chuck 41, the automation degree is high, and the labor intensity of people is low.

In another preferred embodiment of the present invention, as shown in fig. 1 and 2, the first spindle 3 and the second spindle 4 are respectively located at both sides of the tool holder 2 and are oppositely disposed, and the first spindle chuck 31 and the second spindle chuck 41 are both self-locking chucks. The first transverse-longitudinal moving mechanism 5 and the second transverse-longitudinal moving mechanism 6 drive the first main shaft 3 and the second main shaft 4 to move transversely to approach or move away from each other, respectively. The moving device is composed of a first transverse and longitudinal moving mechanism 5 and a first spindle 3, when the first spindle 3 and a second spindle 4 approach each other, the first spindle chuck 31 can send the workpiece 10 in the first spindle chuck to the second spindle chuck 41, namely, the first spindle 3 and the second spindle 4 have a moving butt joint function.

In the present embodiment, the first spindle chuck 31 is preferably an automatic locking chuck, and the second spindle chuck 41 is preferably an automatic locking expanding sleeve. The first spindle chuck 31 may be, but is not limited to, a hydraulic automatic locking chuck disclosed in CN105195770A or an automatic clamping three-jaw chuck disclosed in CN104439356A, the second spindle chuck 41 may be, but is not limited to, a tension sleeve type numerical control automatic clamping apparatus disclosed in CN201446257U, and of course, the first spindle chuck 31 and the second spindle chuck 41 may also be other automatic locking chuck structures in the prior art.

The specific process is as follows: after the left tool on the tool rest 2 finishes processing the right side of the workpiece on the first spindle 3, the second spindle chuck 41 is in an open state, the first transverse and longitudinal moving mechanism 5 enables the first spindle 3 to move longitudinally to the front of the tool rest 2, then the first spindle 3 moves transversely to the right, the first spindle 3 sends the workpiece to the second spindle chuck 41, the second spindle chuck 41 automatically clamps the workpiece, then the first spindle chuck 31 releases the workpiece, and the first spindle 3 moves leftwards again, so that the moving and butting functions of the first spindle 3 and the second spindle 4 are finished. When the first spindle 3 and the second spindle 4 are longitudinally offset, the first spindle 3 and the second spindle 4 are coaxially aligned.

As shown in fig. 1 and 2, in another preferred embodiment, the pushing mechanism 8 is located behind the tool post 2, and as shown in fig. 3, the pushing mechanism 8 includes a push rod 83 for pushing the workpiece 10, and one end of the push rod 83 away from the workpiece 10 is fixedly connected with a pushing driving member 87 for moving the push rod 83 laterally, for example, the pushing driving member 87 is a telescopic cylinder or a hydraulic cylinder; a lower seat 81 is fixedly connected to the lathe bed 1, a gland 82 is connected to the upper portion of the lower seat 81 through an elastic piece 86, and a containing space between the lower seat 81 and the gland 82 is a workpiece feeding position. Preferably, the elastic member 86 is an extension spring, the gland 82 is connected to the connecting plate 84 through a bolt, the lower end of the extension spring is connected to the lower seat 81, and the upper end of the extension spring is connected to the connecting plate 84.

The workpiece 10 is located in the accommodating space between the lower seat 81 and the pressing cover 82, the elastic piece 86 provides floating clamping force, and the upper part of the workpiece 10 is clamped by the pressing cover 82 in a floating mode and is kept stable. The first transverse and longitudinal moving mechanism 5 drives the first spindle 3 to move longitudinally backwards to the pushing mechanism 8, so that the first spindle chuck 31 is aligned with the workpiece loading position. Then the pushing driving member 87 moves the pushing rod 83 to the left, the pushing rod 83 pushes the workpiece 10 out of the lower seat 81, the workpiece 10 enters the first spindle chuck 31, and then the pushing driving member 87 moves the pushing rod 83 to the right to reset.

As shown in fig. 1 and fig. 2, in another preferred embodiment of the present invention, the special turning machine further includes a feeding device 7, the feeding device 7 includes a vibrating tray 71, the vibrating tray 71 is mounted on the ground on the left side of the rear of the machine bed 1 through a bracket, an outlet of the vibrating tray 71 is connected to an upper rolling channel 72 disposed obliquely downward, an outlet of the upper rolling channel 72 is connected to a lifting mechanism 73 for conveying the workpiece to a workpiece loading position, that is, the lifting mechanism 73 conveys the workpiece between a lower seat 81 and a gland 82 of the material pushing mechanism 8. The vibration tray 71 finishes the cleaning of the workpieces, and the workpieces move from the upper rolling material channel 72 to the lifting mechanism 73 by gravity.

Specifically, as shown in fig. 1 and 4, the lifting mechanism 73 includes a feeding cylinder 735 located at the outlet of the upper rolling material channel 72, a supporting plate 71 fixed at the rear part of the bed 1, lifting cylinders 733 respectively installed at the rear and front sides of the supporting plate 731, and a feeding channel 732 arranged obliquely downward. The lifting cylinder telescopic shaft 733a is positioned below the cylinder body, the tail part of the lifting cylinder telescopic shaft 733a is connected with a loading plate 734 which is arranged in a downward inclination way, and the front end of the loading plate 734 is arranged close to the rear side of the supporting plate 731, so that the workpiece on the loading plate 734 can not slide out. The supporting plate 731 is provided with a material port communicated with the inlet of the material inlet channel 732, and the outlet of the material inlet channel 732 is positioned at the material loading position of the workpiece.

As shown in fig. 4, the feed cylinder extension shaft 735a extends, and the feed cylinder extension shaft 735a pushes the workpieces 10 at the outlet of the upper rolling material passage 72 one by one to the right onto the loading plate 734. The lifting cylinder telescopic shaft 733a is shortened, and the lifting cylinder telescopic shaft 733a conveys the workpiece 10 on the loading plate 734 to the material port of the support plate 731. Because the loading plate 734 and the feeding channel 731 are both arranged obliquely downwards, when the workpiece is located at the material opening of the supporting plate 731, the workpiece enters the feeding channel 731 from the loading plate 734 by gravity, and moves to the workpiece loading position by gravity, that is, moves between the lower seat 81 of the material pushing mechanism 8 and the gland 82 shown in fig. 3.

A plurality of workpiece blanks are randomly stacked in the vibration material tray 71, the vibration material tray 71 vibrates regularly, and finally the workpieces 10 are conveyed to the upper rolling material channel 72 according to a certain rule. The method specifically comprises the following steps: the vibration material tray 71 drives the workpiece 10 to slowly creep upwards along the circumference of the vibration material tray 71, and on a creeping channel, a plurality of groups of small baffles are arranged according to the characteristics of the workpiece 10, and the small baffles can adjust the random directions of the workpiece 10, such as positive and negative directions, bosses, depressions and the like. The specific structure of the vibrating tray 71 can adopt the prior art, which is not the innovative point of the present invention and is not described herein.

In another preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, the special turning machine further includes a blanking device 9, and the blanking device 9 includes a blanking box 93, a downward inclined lower rolling material channel 91 communicated with the blanking box 93, and a material collecting tray 92 located at the outlet of the lower rolling material channel 91 and located at the right side behind the machine bed 1. Referring to fig. 5, a centering plate 931 is disposed on a side of the lower magazine 93 close to the second spindle chuck 41, the centering plate 931 is provided with a centering large opening 93a and a centering small opening 93b which are communicated with each other, the centering large opening 93a is larger than the workpiece 10, and the centering small opening 93b is smaller than the workpiece 10.

The second transverse and longitudinal moving mechanism 6 drives the second main shaft 4 to transversely move leftwards, and the second main shaft 4 can enable the workpiece 10 to completely enter the blanking box 93 through the centering large opening 93 a; then the second transverse and longitudinal moving mechanism 6 drives the second main shaft 4 to move longitudinally backwards, and the second main shaft 4 can enable the workpiece 10 to move to the centering small opening 93b and be clamped in the blanking box 93 by the centering small opening 93 b; then the second spindle chuck 41 releases the workpiece 10 and moves laterally to the right, the workpiece 10 disengages from the second spindle chuck 41 and falls into the lower roller chute 91, and the workpiece 10 moves by gravity from the lower roller chute 91 into the catch tray 92.

As shown in fig. 1, 3 and 5, in another preferred embodiment, a casing 85 is provided outside the pushing mechanism 8, and the blanking box 93 is also provided in the casing 85 next to the right side of the pushing mechanism 8.

As shown in fig. 6, in another preferred embodiment, the first transverse and longitudinal moving mechanism 5 includes a bracket 51 fixed on the bed 1, a first supporting plate 52 longitudinally slidably connected to the bracket 51, a first driving mechanism for driving the first supporting plate 52 to move longitudinally, a second supporting plate 54 transversely slidably connected to the first supporting plate 52, and a second driving mechanism for driving the second supporting plate 54 to move transversely, and the first spindle 3 is fixed on the second supporting plate 54. The second traverse/longitudinal movement mechanism 6 is preferably identical in structure and symmetrically arranged to the first traverse/longitudinal movement mechanism 5.

In operation, the first driving mechanism drives the first supporting plate 52 to move longitudinally, the first supporting plate 52 enables the first spindle 3 to move longitudinally through the second supporting plate 54, the second driving mechanism drives the second supporting plate 54 to move transversely, and the first spindle 3 moves transversely along with the second supporting plate 54, so that the transverse and longitudinal movement of the first spindle 3 is realized.

Specifically, as shown in fig. 6, the first driving mechanism includes a first motor 531 and a first guide rail 532 fixed to the carriage 51, and preferably one longitudinal first guide rail 532 is provided one on each of left and right; first sliders 534 matched with the first guide rails 532 are fixedly connected below the first supporting plate 52, and preferably two first sliders 534 are arranged on each first guide rail 532; the first support plate 52 is slidably coupled to the first track 532 via a first slider 534. An output shaft of the first motor 531 is directly or indirectly connected to a first lead screw 533 which rotates along with the first motor, and a first lead screw sleeve (not shown in the figure) fixedly connected to the first supporting plate 52 is in threaded connection with the first lead screw 533. For example, the output shaft of the first motor 531 is coaxially connected to the first lead screw 533 through a coupling; or the output shaft of the first motor 531 is coaxially welded with the first lead screw 533; or the output shaft of the first motor 531 is connected with the first lead screw 533 through a transmission mechanism, so that the axis of the output shaft of the first motor 531 is parallel to the axis of the first lead screw 533. The first motor 531 rotates the first lead screw 533, and the first lead screw 533 slides the first slider 534 of the first supporting plate 52 longitudinally on the first guide rail 532 through the first lead screw sleeve.

As shown in fig. 3, the second driving mechanism includes a second motor 551 and second sliders 554 fixed to the first blade 52, and preferably, two second sliders 554 are provided at a front portion of an upper end of the first blade 52 and two second sliders 554 are also provided at a rear portion of the upper end of the first blade 52; two second guide rails 552 which are transversely arranged and matched with the second sliding block 554 are fixedly connected below the second supporting plate 54; the second plate 54 is slidably coupled to the second slide 554 by a second rail 552. An output shaft of the second motor 551 is directly or indirectly connected with a second lead screw 553 rotating therewith, and a second lead screw sleeve (not shown in the figure) fixedly connected with the second supporting plate 54 is in threaded connection with the second lead screw 553. For example, the output shaft of the second motor 551 is coaxially connected to the second lead screw 553 through a coupling; or the output shaft of the second motor 551 is coaxially welded with the second lead screw 553; or the output shaft of the second motor 551 is connected with the second lead screw 553 through a transmission mechanism, so that the axis of the output shaft of the second motor 551 is parallel to the axis of the second lead screw 553. The second motor 551 rotates the second lead screw 553, and the second lead screw 553 slides the second guide rail 552 of the second support plate 54 laterally on the second slider 554 through the second lead screw housing.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.