阅读说明：本技术 一种新型主轴箱驱动拉紧装置及数控机床 (Novel headstock drive is taut device and digit control machine tool ) 是由 王爱华 张文平 罗二龙 于 2019-10-10 设计创作，主要内容包括：本申请公开了一种新型主轴箱驱动拉紧装置及数控机床,包括机构本体、固定在机构本体上的分体式油缸；分体式油缸包括固定在机构本体上前缸筒、后缸筒、位于在前缸筒与后缸筒内的中空输入轴套和中空活塞；输入轴套的两端分别与前缸筒和后缸筒的内壁固定连接；活塞套在输入轴套外；前缸筒远离后缸筒的一侧竖直设有用于固定主轴箱的拉紧板；拉紧板面向前缸筒的一侧固定连接有拉紧套筒；活塞位于前缸筒和后缸筒之间的部分向外凸出并与拉紧套筒固定连接,以带动拉紧板移动；输入轴套内通过轴承连接有输入轴,输入轴的一端连接有驱动输入轴转动的驱动机构。本申请既满足了加工设备的刚性多轴加工的高效率需求,又给更换主轴箱带来了方便。(The application discloses a novel spindle box driving tension device and a numerical control machine tool, which comprise a mechanism body and a split type oil cylinder fixed on the mechanism body; the split oil cylinder comprises a front cylinder barrel, a rear cylinder barrel, a hollow input shaft sleeve and a hollow piston, wherein the front cylinder barrel and the rear cylinder barrel are fixed on the mechanism body; two ends of the input shaft sleeve are respectively and fixedly connected with the inner walls of the front cylinder barrel and the rear cylinder barrel; the piston is sleeved outside the input shaft sleeve; a tensioning plate for fixing the spindle box is vertically arranged on one side of the front cylinder barrel, which is far away from the rear cylinder barrel; one side of the tensioning plate facing the front cylinder barrel is fixedly connected with a tensioning sleeve; the part of the piston between the front cylinder barrel and the rear cylinder barrel protrudes outwards and is fixedly connected with the tensioning sleeve so as to drive the tensioning plate to move; the input shaft sleeve is connected with an input shaft through a bearing, and one end of the input shaft is connected with a driving mechanism for driving the input shaft to rotate. The application not only meets the high efficiency requirement of rigid multi-axis machining of machining equipment, but also brings convenience for replacing the spindle box.)

1. A novel main spindle box driving tension device is characterized by comprising a mechanism body and a split type oil cylinder fixed on the mechanism body; the split oil cylinder comprises a front cylinder barrel, a rear cylinder barrel, a hollow input shaft sleeve and a hollow piston, wherein the hollow input shaft sleeve and the hollow piston are positioned in the front cylinder barrel and the rear cylinder barrel; the front cylinder barrel and the rear cylinder barrel are fixed on the mechanism body; two ends of the input shaft sleeve are respectively and fixedly connected with the inner walls of the front cylinder barrel and the rear cylinder barrel; the piston is sleeved outside the input shaft sleeve;

a tensioning plate for fixing the spindle box is vertically arranged on one side, away from the rear cylinder barrel, of the front cylinder barrel; the middle part of the tensioning plate is provided with a through hole; one side of the tensioning plate facing the front cylinder barrel is fixedly connected with a tensioning sleeve; the part of the piston, which is positioned between the front cylinder barrel and the rear cylinder barrel, protrudes outwards and is fixedly connected with the tensioning sleeve so as to drive the tensioning plate to move;

an input shaft is connected in the input shaft sleeve through a bearing, one end of the input shaft extends out of the end part of the front cylinder barrel, and the other end of the input shaft extends out of the end part of the rear cylinder barrel; one end of the input shaft is connected with a driving mechanism for driving the input shaft to rotate, and the other end of the input shaft is aligned with the center of the through hole to provide a rotating power source for the spindle box.

2. The novel headstock drive take-up assembly of claim 1, wherein the drive mechanism comprises a motor, a reducer connected to an output shaft of the motor; and the output shaft of the speed reducer is connected with the end part of the input shaft through a coupling.

3. The novel headstock drive take-up device of claim 2, wherein a splined shaft is connected to the end of the input shaft corresponding to the through hole through a splined hub.

4. The novel headstock drive take-up assembly of claim 1 wherein the mechanism body is provided with a take-up surface around the front cylinder corresponding to the take-up shoe; and tensioning cushion blocks are uniformly arranged at the edges of the tensioning surfaces.

5. The novel headstock drive take-up assembly of claim 4, wherein guide pins are provided on the tightening surface on both sides of the tightening plate.

6. The novel headstock drive take-up assembly of claim 4, wherein a telescoping guide shaft is fixedly connected between the tightening surface and the tightening block.

7. The novel spindle box driving and tensioning device as claimed in any one of claims 1 to 6, wherein a front end cover for sealing is arranged at the end of the front cylinder barrel, and an oil distribution joint is arranged on the front end cover; one end of the tensioning sleeve connected with the tensioning plate is provided with an avoidance port corresponding to the oil distribution joint.

8. The novel spindle box driving and tensioning device as claimed in claim 7, wherein one end of the tensioning sleeve, which is connected with the tensioning plate, is of a petal-type structure, and an avoiding opening corresponding to the oil distribution joint is formed between adjacent petals.

9. The novel headstock drive take-up assembly of any one of claims 1 to 6, wherein the end of the input sleeve is provided with a flanged connection to the rear cylinder.

10. A numerical control machine tool, characterized in that the main control machine tool is provided with a novel headstock drive tension device according to any one of claims 1 to 8; the main spindle box arranged at the end part of the input shaft is a multi-shaft main spindle box.

Technical Field

The utility model relates to a machine tool machining technical field, concretely relates to novel headstock drive take-up device and digit control machine tool.

Background

The market of the existing automobile and motorcycle part processing equipment is known in detail due to work requirements, and the automobile and motorcycle gearbox shell processing equipment on the market is basically two types. The first type of equipment is a single-axis machining center: its advantages are easy changing tools and high flexibility; the defects of single-shaft processing and low efficiency; the second type of equipment is a rigid multi-axis special machine tool: the multi-shaft multi-cutter simultaneous processing has the advantages of high efficiency; the defects are that the position of the main shaft of the multi-shaft main shaft box is not adjustable, and the flexibility is poor.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a novel headstock drive take-up device and a numerically controlled machine tool with high efficiency and good rigidity and flexibility.

The application provides a novel spindle box driving and tensioning device which comprises a mechanism body and a split type oil cylinder fixed on the mechanism body; the split oil cylinder comprises a front cylinder barrel, a rear cylinder barrel, a hollow input shaft sleeve and a hollow piston, wherein the hollow input shaft sleeve and the hollow piston are positioned in the front cylinder barrel and the rear cylinder barrel; the front cylinder barrel and the rear cylinder barrel are fixed on the mechanism body; two ends of the input shaft sleeve are respectively and fixedly connected with the inner walls of the front cylinder barrel and the rear cylinder barrel; the piston is sleeved outside the input shaft sleeve;

a tensioning plate for fixing the spindle box is vertically arranged on one side, away from the rear cylinder barrel, of the front cylinder barrel; the middle part of the tensioning plate is provided with a through hole; one side of the tensioning plate facing the front cylinder barrel is fixedly connected with a tensioning sleeve; the part of the piston, which is positioned between the front cylinder barrel and the rear cylinder barrel, protrudes outwards and is fixedly connected with the tensioning sleeve so as to drive the tensioning plate to move;

an input shaft is connected in the input shaft sleeve through a bearing, one end of the input shaft extends out of the end part of the front cylinder barrel, and the other end of the input shaft extends out of the end part of the rear cylinder barrel; one end of the input shaft is connected with a driving mechanism for driving the input shaft to rotate, and the other end of the input shaft is aligned with the center of the through hole to provide a rotating power source for the spindle box.

According to the technical scheme provided by the embodiment of the application, the driving mechanism comprises a motor and a speed reducer connected to an output shaft of the motor; and the output shaft of the speed reducer is connected with the end part of the input shaft through a coupling.

According to the technical scheme provided by the embodiment of the application, the end part of the input shaft, corresponding to the through hole, is connected with a spline shaft through a spline sleeve.

According to the technical scheme provided by the embodiment of the application, a tensioning surface is arranged on the mechanism body corresponding to the tensioning cushion block and surrounds the front cylinder barrel; and tensioning cushion blocks are uniformly arranged at the edges of the tensioning surfaces.

According to the technical scheme provided by the embodiment of the application, guide pins are arranged on the tensioning surface on two sides of the tensioning plate.

According to the technical scheme provided by the embodiment of the application, a telescopic guide shaft is fixedly connected between the tensioning surface and the tensioning block.

According to the technical scheme provided by the embodiment of the application, a front end cover for sealing is arranged at the end part of the front cylinder barrel, and an oil distribution joint is arranged on the front end cover; one end of the tensioning sleeve connected with the tensioning plate is provided with an avoidance port corresponding to the oil distribution joint.

According to the technical scheme that this application embodiment provided, taut sleeve with the one end that taut board is connected is petal formula structure, form between the adjacent petal with join in marriage the dodge mouth that oil joint corresponds.

According to the technical scheme that this application embodiment provided, the tip be equipped with the flange joint portion that back cylinder is connected.

In a second aspect, the application provides a numerical control machine tool, wherein the main control machine tool is provided with the novel spindle box driving and tensioning device; the main spindle box arranged at the end part of the input shaft is a multi-shaft main spindle box.

The center-driven swing mechanism provided by the application adopts a structure of a split type oil cylinder and a hollow piston, a main shaft for providing a main shaft box rotating power source can penetrate through the hollow piston, the middle part of the piston can be increased at will, and the center-driven swing mechanism is connected with a tensioning sleeve connected with a tensioning plate for fixing the main shaft box, so that the axial moving power is provided for the tensioning plate, thereby not only realizing the tensioning, fixing, stretching, dismounting and mounting of a multi-shaft box, but also providing a multi-shaft rotating power source for the multi-shaft box, namely the device is rigid and flexible, not only meeting the high efficiency requirement of rigid multi-shaft processing of processing equipment, but also bringing convenience for replacing the main shaft box,

in addition, in the technical scheme of the application, the split oil cylinder for tensioning and the input shaft for providing the rotary driving force are concentrically arranged, so that the tensioning mechanism can be arranged in a central symmetry manner by the input shaft, and the structure is compact and ingenious; the tension can be designed on the symmetrical center of the whole mechanism, the tension of a plurality of tensioning points is consistent, the deformation of the tensioning plate is consistent, and the main spindle box is tensioned reliably.

According to the technical scheme provided by the embodiment of the application, the symmetrical tensioning cushion blocks are designed on the tensioning surface of the front cylinder barrel, preferably, the tensioning cushion blocks are of rigid structures, and the tensioning reliability of the spindle box is further guaranteed.

According to the technical scheme that this application embodiment provided, taut sleeve and take-up plate junction adopt the design of petal formula, even if be convenient for taut sleeve machine-shaping, guaranteed again that the structure is pleasing to the eye, still realized dodging of joining in marriage the oil head.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of a first embodiment of the present application;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic view of the structure of the tensioning sleeve.

100. A mechanism body; 200. a split type oil cylinder; 300. a multi-axis box; 400. a drive mechanism; 210. a front cylinder barrel; 220. a rear cylinder barrel; 230. an input shaft sleeve; 231. a flange connection; 240. a piston; 250. a bearing; 110. tensioning the plate; 120. tensioning the cushion block; 130. tightening the surface; 111. a through hole; 112. tensioning the sleeve; 410. an input shaft; 420. a motor; 430. a speed reducer; 450. a coupling; 411. a spline housing; 412. a spline shaft; 131. a guide pin; 211. a front end cover; 221. a rear end cap; 231. a clamping part; .

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Please refer to fig. 1, which is a schematic structural diagram of an embodiment of a novel headstock-driven tension device provided by the present application, including a mechanism body 100, a split cylinder 200 fixed on the mechanism body 100; the split oil cylinder 200 comprises a front cylinder barrel 210, a rear cylinder barrel 220, a hollow input shaft sleeve 230 and a hollow piston 240, wherein the hollow input shaft sleeve 230 and the hollow piston 240 are positioned in the front cylinder barrel 210 and the rear cylinder barrel 220; the front cylinder barrel 210 and the rear cylinder barrel 220 are both fixed on the mechanism body 100; two ends of the input shaft sleeve 230 are respectively and fixedly connected with the inner walls of the front cylinder barrel 210 and the rear cylinder barrel 220; the piston 240 is sleeved outside the input shaft sleeve 230; the piston 240 is sleeved outside the input shaft sleeve 230 and moves left and right;

a tensioning plate 110 for fixing the spindle box 300 is vertically arranged on one side, away from the rear cylinder barrel 220, of the front cylinder barrel 210; the middle part of the tensioning plate 110 is provided with a through hole 111; a tensioning sleeve 112 is fixedly connected to one side of the tensioning plate 110 facing the front cylinder barrel 210; the part of the piston 240 between the front cylinder 210 and the rear cylinder 220 protrudes outwards and is fixedly connected with the tensioning sleeve 112 to drive the tensioning plate 110 to move;

an input shaft 410 is connected in the input shaft sleeve 230 through a bearing 250, one end of the input shaft 410 extends out of the end of the front cylinder 210, and the other end of the input shaft 410 extends out of the end of the rear cylinder 220; one end of the input shaft 410 is connected with a driving mechanism 400 for driving the input shaft 410 to rotate, and the other end of the input shaft is aligned with the center of the through hole 111 for providing a rotating power source for the spindle box 300. In this embodiment, the driving mechanism 400 includes a motor 420, a reducer 430 connected to an output shaft of the motor 420; the output shaft of the speed reducer 440 is connected to the end of the input shaft 310 via a coupling 450.

The input shaft 410 is coaxially connected with the input shaft sleeve 230, two ends of the input shaft sleeve 230 are connected with the input shaft 410 through the bearings 250, the piston 240 is sleeved outside the input shaft sleeve 230, and the coaxiality of the input shaft 410, the input shaft sleeve 230 and the piston 240 is ensured in a layer-by-layer sleeving manner, so that the tensioning force provided by the movement of the piston is centered on the input shaft 410, and the tensioning force of the piston to each point on the tensioning plate is consistent.

In this embodiment, a spline shaft 412 is connected to the end of the input shaft 410 corresponding to the through hole 111 through a spline housing 411; the spline shaft 412 can be connected with an input shaft of the multi-shaft spindle box 300 to provide power for the spindle box 300 to rotate.

When the spindle box 300 is installed, the split type oil cylinder 200 provides driving force for the piston 240, so that the piston 240 moves leftwards, the piston 240 pulls the tensioning plate 110 in a direction away from the mechanism body 100 through the tensioning sleeve 112, the tensioning plate 110 extends out, a mounting hole for installing the spindle box 300 is formed in the tensioning plate 110, and an operator installs the spindle box 300 on the tensioning plate 110; the tension plate 110 extends out to provide an installation space for installing the spindle box 300; after the spindle box 300 is installed, the split cylinder 200 provides driving force to the piston 240, so that the piston 240 moves to the right, the piston 240 pulls the tension plate 110 towards the mechanism body 100 through the tension sleeve 112, and the tension plate 110 abuts against the side wall of the mechanism body 100. The spindle box 300 is tightly pulled against the side wall of the mechanism body 100, in order to make the tension plate 110 tightly attached to the tension surface 130 of the mechanism body 100, the side wall (i.e. the tension surface 130) of the mechanism body adjacent to the tension plate 110 is uniformly provided with tension cushion blocks 120 around the tension sleeve 112, in the embodiment, the tension cushion blocks 120 are arranged corresponding to four corners of the tension plate 110; because the tension force of the tension sleeve 112 is located at the center of the tension plate 110, the tension force applied to the four tension pads 120 is uniform, the reliability of the tension of the spindle box 300 is ensured, and after the spindle box 300 is tensioned on the device, the input shaft 410 can be driven to rotate by the starting motor 420, so that the driving force is provided for the spindle box 300. In this embodiment, the main spindle box 300 is a multi-axis main spindle box, i.e. 5-30 tools are provided thereon, and one input shaft of the main spindle box can simultaneously drive the 3-50 tools to simultaneously operate, thereby effectively improving the processing efficiency.

Preferably, in this embodiment, guide pins 131 are provided on the tension surface 130 on both sides of the tension plate 110.

Preferably, in this embodiment, a telescopic guide shaft is fixedly connected between the tensioning surface 130 and the tensioning block 120.

The arrangement of the guide pin 131 and the guide shaft further ensures the coaxiality of the left and right moving direction of the tensioning block 120 and the input shaft 410.

Preferably, in this embodiment, a front end cover 211 for sealing is disposed at an end of the front cylinder 210, and an oil distribution joint is disposed on the front end cover 211; one end of the tensioning sleeve 112 connected with the tensioning plate 110 is provided with an avoidance port corresponding to the oil distribution joint; in this embodiment, as shown in fig. 3, one end of the tensioning sleeve 112 connected to the tensioning plate 110 is a petal-shaped structure, and an escape opening corresponding to the oil distribution joint is formed between adjacent petals.

The petal-type structure design ensures the formation of the avoiding opening, simultaneously ensures the beauty of the tensioning sleeve 112, and most importantly, ensures the uniform distribution of the tensioning fixing point positions of the tensioning sleeve 112 and the tensioning plate 110.

Preferably, in this embodiment, a flange connection portion 231 connected to the rear cylinder is disposed at an end of the input shaft sleeve 230, a circle of connection holes are disposed on an end surface of the rear cylinder 220 corresponding to the flange connection portion, and the input shaft sleeve 230 is fixedly connected to the rear cylinder 220 through the flange connection portion 231.

The rear end cap 221 at the end of the rear cylinder 220 is used to compress the bearing 250 between the input hub 230 and the input shaft 410. Example two

The embodiment provides a numerical control machine tool, wherein a novel spindle box driving and tensioning device in the first embodiment is mounted on a main control machine tool; the main spindle box arranged at the end part of the input shaft is a multi-shaft main spindle box.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.