阅读说明：本技术 一种工件固定式专用数控车床 (Special numerically controlled lathe with fixed workpiece ) 是由 王顺义 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种工件固定式专用数控车床,包括：主基座,用于固设在被加工零件上；旋转盘,转动设置在主基座上；旋转盘电机,安装在主基座上,用于驱动旋转盘在主基座上绕被加工零件做回转运动；X轴滑台,设置在旋转盘上；X轴伺服电机,设置在X轴滑台上,用于驱动X轴滑台上的第一滑块做直线运动；Z轴滑台,设置在第一滑块上；Z轴伺服电机,设置在Z轴滑台上,用于驱动Z轴滑台上的第二滑块做直线运动；刀具,所述刀具安装在第二滑块上；导电滑环,所述导电滑环通过安装支架设置在主基座上,且置于被加工零件上方；所述导电滑环通过X轴电缆线与X轴伺服电机连接；导电滑环通过Z轴电缆线与Z轴伺服电机连接。(The invention discloses a special numerically controlled lathe for fixing workpieces, which comprises: the main base is used for being fixedly arranged on a part to be processed; a rotating disk rotatably disposed on the main base; the rotating disc motor is arranged on the main base and is used for driving the rotating disc to rotate around the machined part on the main base; the X-axis sliding table is arranged on the rotating disc; the X-axis servo motor is arranged on the X-axis sliding table and used for driving the first sliding block on the X-axis sliding table to do linear motion; the Z-axis sliding table is arranged on the first sliding block; the Z-axis servo motor is arranged on the Z-axis sliding table and used for driving a second sliding block on the Z-axis sliding table to do linear motion; the cutter is arranged on the second sliding block; the conductive slip ring is arranged on the main base through the mounting bracket and is arranged above the part to be processed; the conductive slip ring is connected with the X-axis servo motor through an X-axis cable; the conductive slip ring is connected with the Z-axis servo motor through a Z-axis cable.)

1. A special numerically controlled lathe for fixing a workpiece is characterized by comprising:

the main base is used for being fixedly arranged on a part to be processed;

the rotating disc is rotatably arranged on the main base;

the rotary disk motor is arranged on the main base and is used for driving the rotary disk to rotate around the machined part on the main base;

the X-axis sliding table is arranged on the rotating disc;

the X-axis servo motor is arranged on the X-axis sliding table and used for driving a first sliding block on the X-axis sliding table to do linear motion;

the Z-axis sliding table is arranged on the first sliding block;

the Z-axis servo motor is arranged on the Z-axis sliding table and used for driving a second sliding block on the Z-axis sliding table to do linear motion;

the cutter is arranged on the second sliding block;

the conductive slip ring is arranged on the main base through the mounting bracket and is arranged above the part to be processed; the conductive slip ring is connected with the X-axis servo motor through an X-axis cable; the conductive slip ring is connected with the Z-axis servo motor through a Z-axis cable.

2. The numerically controlled lathe as claimed in claim 1, wherein the main base is annular and is formed by two semicircular bases, and the bases are positioned by a positioning pin and fastened by a bolt.

3. The fixed special numerically controlled lathe for workpieces as claimed in claim 1 or 2, wherein the rotating disc is circular and is composed of two semicircular discs, and is positioned by a positioning pin and fastened by a bolt.

4. The numerically controlled lathe as claimed in claim 1, wherein the mounting bracket is in a shape of a Chinese character 'men', and both sides of the bottom of the mounting bracket are fixed to both sides of the main base.

5. The numerically controlled lathe as claimed in claim 1, further comprising an auxiliary holder fixed to the workpiece, the auxiliary holder being disposed to abut against a lower side of the main holder.

6. The numerically controlled lathe as claimed in claim 5, wherein the auxiliary holder is annular and is formed by two semi-annular holders fastened by bolts.

Technical Field

The invention relates to the technical field of lathes, in particular to a special numerically controlled lathe with a fixed workpiece.

Background

The key to turning a part on a common numerically controlled lathe is to rotate the workpiece while pressing the workpiece in the longitudinal direction (Z direction) or in the frontal direction (X direction) with a fixed tool. Generally, oil (including gas) pipelines installed in the field or oil pipelines on an offshore drilling platform are very long, taper or threads are machined by rotating a workpiece, a large-stroke lathe is needed, and the lathe is very expensive or cannot be produced by a manufacturer at all after being too long.

Disclosure of Invention

The invention aims to provide a special numerically controlled lathe for fixing a workpiece. So as to solve the technical problems existing in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

a special numerically controlled lathe for fixing a workpiece includes: the main base is used for being fixedly arranged on a part to be processed; the rotating disc is rotatably arranged on the main base; the rotary disk motor is arranged on the main base and is used for driving the rotary disk to rotate around the machined part on the main base; the X-axis sliding table is arranged on the rotating disc; the X-axis servo motor is arranged on the X-axis sliding table and used for driving a first sliding block on the X-axis sliding table to do linear motion; the Z-axis sliding table is arranged on the first sliding block; the Z-axis servo motor is arranged on the Z-axis sliding table and used for driving a second sliding block on the Z-axis sliding table to do linear motion; the cutter is arranged on the second sliding block; the conductive slip ring is arranged on the main base through the mounting bracket and is arranged above the part to be processed; the conductive slip ring is connected with the X-axis servo motor through an X-axis cable; the conductive slip ring is connected with the Z-axis servo motor through a Z-axis cable.

In some embodiments, the main base is annular and is composed of two semi-annular bases, positioned by dowel pins, and fastened by bolts.

In some embodiments, the rotating disc is circular and is composed of two semicircular annular discs, and is positioned by a positioning pin and fastened by a bolt.

In some embodiments, the mounting bracket is in a door shape, and both sides of the bottom of the mounting bracket are fixed to both sides of the main base.

In some embodiments, the auxiliary fixing seat is fixed on the processed part and is abutted against the lower part of the main base.

In some embodiments, the auxiliary fixing seat is annular and is composed of two semi-annular fixing seats, and the two semi-annular fixing seats are fastened through bolts.

Drawings

FIG. 1 is a schematic view of a structure of a fixed-type special numerically controlled lathe according to this embodiment;

the labels in the figure are: the machining method comprises the following steps of 1-conducting slip ring, 2-mounting bracket, 3-X axis sliding table, 4-X axis servo motor, 5-Z axis servo motor, 6-Z axis sliding table, 7-X axis cable, 8-Z axis cable, 9-cutter, 10-main base, 11-rotating disc, 12-machined part, 13-auxiliary fixing base and 14-rotating disc motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

The workpiece-fixed type special numerically controlled lathe according to the embodiment of the present application will be described in detail below with reference to fig. 1. It is to be noted that the following examples are only for explaining the present application and do not constitute a limitation to the present application.

In an embodiment of the present application, as shown in fig. 1, the present invention provides a workpiece-fixed special numerically controlled lathe, including: the machining tool comprises a main base 10, a rotating disc 11, a rotating disc motor 14, an X-axis sliding table 3, an X-axis servo motor 4, a Z-axis sliding table 6, a Z-axis servo motor 5, a cutter 9 and a conductive sliding ring 1, wherein the main base 10 is used for being fixedly arranged on a machined part 12; the main base 10 is fixed to a "workpiece/workpiece 12", and is a base for rotating the disk 11 (i.e., a spindle), and has a bearing for rotating the disk 11 and a support for fixing the bearing. The rotating disk 11 is rotatably arranged on the main base 10; the rotary disk motor 14 is arranged on the main base 10 and used for driving the rotary disk 11 to rotate around the processed part 12 on the main base 10, and a toothed disk is arranged at the edge of the rotary disk 11 and meshed with a gear of the rotary disk motor 14; the X-axis sliding table 3 is arranged on the rotating disc 11; the X-axis servo motor 4 is arranged on the X-axis sliding table 3 and is used for driving a first sliding block on the X-axis sliding table 3 to do linear motion; the X-axis servo motor 4 can drive the screw rod to rotate through the rotation of the servo motor on the X-axis servo motor, so that the first sliding block is driven to move forwards and backwards, the cutter 9 can be driven to move forwards and backwards, and the cutting of parts is realized.

The Z-axis sliding table 6 is arranged on the first sliding block; the Z-axis servo motor 5 is arranged on the Z-axis sliding table 6 and is used for driving a second sliding block on the Z-axis sliding table 6 to do linear motion; the cutter 9 is arranged on the second sliding block through a cutter 9 mounting seat, different supports of the cutter 9 can be replaced according to different cutters 9, and generally, a turning tool, a thread cutter, a splitting cutter or other supports of the cutter 9 can be selected; the Z-axis servo motor 5 can rotate through the servo motor on the Z-axis servo motor to drive the screw rod to rotate, so that the second sliding block is driven to move up and down, the cutter 9 can be driven to move up and down, and the cutting of parts is achieved.

The conductive slip ring 1 is arranged on the main base 10 through the mounting bracket 2 and is arranged above the part 12 to be processed; the conductive slip ring 1 is connected with an X-axis servo motor 4 through an X-axis cable 7; the conductive slip ring 1 is connected with a Z-axis servo motor 5 through a Z-axis cable 8.

The lathe provided by the invention can fix the workpiece and make the cutter 9 rotate around the workpiece. The tool 9 is controlled by a servo motor to rotate around the part 12 to be machined (such as cylindrical turning, taper turning or thread turning). With this arrangement, such machines can accomplish part "turning" operations that are otherwise difficult to machine, while being more costly or longer. In particular to a taper and a taper thread processing device for adapting to the field pipeline connecting end.

The invention aims to provide a special numerically controlled lathe which can taper or thread the end part of a long pipe or a similar pipe (generally, the pipe is more than dozens of meters long and is inconvenient to machine by a common numerically controlled lathe).

Because the workpieces to be machined are long and generally heavy, the workpiece is stable, and the workpiece can be installed on the basis of a pipeline, and generally installed in a Harvard clamping mode; in order to allow for easy installation in any direction along the length of the pipeline, the main base 10 is made into a 2-half type, that is, the main base 10 is annular and is composed of two semicircular bases, the rotary disc 11 is annular and is composed of two semicircular discs, and the rotary disc is positioned by a positioning pin and is fastened by a bolt. For pipelines with the length of several kilometers, the pipelines can be sleeved without a long distance, and the equipment can be installed at any position. Here, it should be noted that: the processed part can be a pipe or a bar.

Because the X-axis servo motor 4 and the Z-axis servo motor 5 need to be rotated around a pipeline or a workpiece for power supply, the X-axis servo motor 4 and the Z-axis servo motor 5 can be controlled by a CNC control system and can also be controlled manually. Therefore, the invention uses the conductive slip ring 1 for power supply and signal transmission; the electric motor rotating around the workpiece is powered and exchanges signals with an electric control system through the conductive slip ring 1. The design structure of the stator and the rotor of the conductive slip ring 1 is the precise superposition of single paths, and the number of the superposed paths is set according to the use requirement. When assembling, the passages of the stator and the passages of the rotor are in one-to-one correspondence to form the passages between the rotor and the stator. The electrical properties of the vias are independent of each other and do not interfere. The formation of the passage between the stator and the rotor necessitates contact between the two. The contact points of the slip ring are functional parts of the whole slip ring and are carriers for showing various performances of the whole slip ring. Therefore, the stable and reliable rotary communication system is formed by the reasonable selection and design of the material of the contact material part, the precise manufacturing and matching of the parts and the like. The slip ring is arranged on the rotating equipment, and various required signals can be transmitted through leads at two ends of the slip ring in a rotating state.

For the problem of cooling the tool 9 in the machining process, when the general tool 9 is well centered, the tool 9 can be made of hard alloy steel and generally does not need to be cooled, but generally, because the appearance of a pipeline is not very standard, the centering of the tool 9 is not very good, so that the tool is easy to break when the very brittle hard alloy steel is used, high-speed steel is generally selected, generally has certain toughness and hardness, can meet the requirements of general turning, is afraid of high temperature, and therefore a spray can is used for spraying cooling liquid to a tool nose to cool in the general turning process.

In some embodiments, the mounting bracket 2 has a door shape, and both sides of the bottom of the mounting bracket 2 are fixed to both sides of the main base 10. The conductive slip ring 1 fixes the static part (stator) of the slip ring on the mounting bracket 2, the slip ring (rotor) is loaded on the rotating equipment, and the required various signals can be transmitted in the rotating state through leading wires X-axis cables 7 and Z-axis cables 8 at the two ends of the slip ring.

The balance weight blocks matched with the X-axis sliding table 3 and the Z-axis sliding table 6 are simultaneously considered by the rotating disc 11 and are arranged on the mounting surface of the rotating disc 11 opposite to the X-axis sliding table 3 and the Z-axis sliding table 6.

In order to ensure that the main base 10 does not displace in the axial direction, the auxiliary fixing base 13 is fixed on the processed part 12, and the auxiliary fixing base 13 is abutted against the lower part of the main base 10. Since the force is large during the turning process, the main base 10 must be stabilized well to ensure the turning quality. In some embodiments, the auxiliary fixing base 13 is annular and is formed by two semi-annular fixing bases, and is fastened by bolts.

The lathe provided by the invention comprises the following steps:

1) firstly, the coaxiality of the center of the rotating disk (namely the main shaft) and the center of the machined part is corrected, and the center of the machined part is ensured to be vertical to the mounting surface of the rotating disk (namely the main shaft).

2) The tool is then mounted and secured while paying attention to the mounting direction of the tool.

3) And powering on and starting the CNC system.

4) And shaking an electronic hand wheel of the CNC system to set the tool.

5) And processing according to the processing requirement. Chamfering, undercut, taper and straight and tapered threads are generally possible.

The workpiece fixed special numerically controlled lathe disclosed by the application can bring the following beneficial effects, including but not limited to: the fixed special numerical control lathe structure for the workpiece can solve the problem that the existing lathe cannot process field petroleum pipelines or pipelines of a drilling platform with huge processing cost, can perfectly complete processing tasks, and is convenient, economic and practical.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.