Multi-axis workpiece machining device

Abstract

The invention discloses a multi-axis workpiece machining device, and belongs to the field of machine tools, the multi-axis workpiece machining device comprises a main shaft and a clamping structure, the clamping structure is used for clamping a workpiece, the multi-axis workpiece machining device further comprises an eccentric structure, the eccentric structure comprises a mounting base, a sliding block, an oil cylinder and a piston rod, the mounting base is in transmission connection with the main shaft, and the oil cylinder is fixed to the mounting base; the piston rod is installed on the oil cylinder, the oil cylinder drives the piston rod to move through hydraulic oil, the sliding block is installed on the installation base in a sliding mode and fixedly connected with the piston rod, the clamping structure is installed on the sliding block, and the piston rod drives the clamping structure to move relative to the installation base and the main shaft through the sliding block, so that multiple parallel axes of a workpiece can be coaxial with the main shaft. Therefore, when the workpiece is of a multi-axis structure, a clamp or a clamping part does not need to be replaced, a plurality of parallel axes of the workpiece can be coaxial with the main shaft only through adjustment of the eccentric structure, the machining efficiency is high, and the machining error of the workpiece is small.

Description

Technical Field

[0001] The invention relates to the field of machine tools, and in particular to a multi-axis workpiece processing device. Background Art

[0002] When a machine tool processes a workpiece, a fixture is needed to clamp the workpiece, the spindle drives the workpiece to rotate through the fixture, and the tool cuts the workpiece. When the workpiece is a multi-axis structure, multiple axes are parallel to each other. When processing different axis parts of the workpiece, it is necessary to change the clamping position of the fixture or replace the fixture so that different axis parts of the workpiece can be processed. This processing method has low work efficiency. If the fixture or clamping position is not changed, when the eccentricity of different axis parts of the workpiece is large, the processing error of the workpiece is large and the product scrap rate is high. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a multi-axis workpiece processing device with high processing efficiency and small workpiece processing error.

[0004] One of the purposes of the present invention is achieved by the following technical solution:

[0005] A multi-axis workpiece processing device comprises a spindle and a clamping structure, wherein the clamping structure is used to clamp the workpiece. The multi-axis workpiece processing device also comprises an eccentric structure, wherein the eccentric structure comprises a mounting seat, a slider, a cylinder and a piston rod, wherein the mounting seat is drivingly connected to the spindle, the cylinder is fixed to the mounting seat, the piston rod is mounted on the cylinder, the cylinder drives the piston rod to move by hydraulic oil, the slider is slidably mounted on the mounting seat, the slider is fixedly connected to the piston rod, the clamping structure is mounted on the slider, and the piston rod drives the clamping structure to move relative to the mounting seat and the spindle through the slider, so that multiple mutually parallel axes of the workpiece can all be coaxial with the spindle.

[0006] Furthermore, the eccentric structure also includes an end cover, which is fixedly connected to the mounting seat, and the slider, the cylinder and the piston rod are located between the end cover and the mounting seat.

[0007] Furthermore, the mounting seat is provided with a slide groove and a groove connected to the slide groove, the oil cylinder is fixed in the groove, one end of the piston rod is located in the oil cylinder, the piston rod is slidably installed in the groove, the slider is slidably installed in the slide groove, and the oil cylinder and the piston rod are located between the mounting seat and the slider.

[0008] Furthermore, the piston rod is arranged in parallel with the sliding block.

[0009] Furthermore, the eccentric structure also includes a connecting block, the connecting block is fixedly connected to the piston rod, and the sliding block is fixedly connected to the connecting block.

[0010] Furthermore, the eccentric structure also includes a limit block, the number of the limit blocks is two, the two limit blocks are fixed to the mounting seat, and the connecting block is located between the two limit blocks.

[0011] Furthermore, the multi-axis workpiece processing device also includes an oil distributor, and the oil distributor is connected to the oil cylinder to supply oil to the oil cylinder.

[0012] Furthermore, the eccentric structure also includes an oil circuit block, which is fixed to the mounting seat, and the mounting seat and the slider are both provided with oil channels. The oil distributor is connected to the oil circuit block through the oil channel of the mounting seat, and the oil circuit block is connected to the oil channel of the slider, and the oil distributor drives the clamping structure to tighten the workpiece.

[0013] Furthermore, the clamping structure includes an expanding core, an expanding sleeve, a conical seat and a connecting seat, the expanding sleeve is installed on the expanding core, the conical seat is fixed on the slider, the expanding core is fixed on the connecting seat, the connecting seat is slidably installed on the slider, the conical seat is provided with a conical surface, and the conical surface is located between the expanding core and the expanding sleeve. When the expanding core and the expanding sleeve move, the conical surface contacts the expanding sleeve to cause the expanding sleeve to expand and tighten the workpiece from the inside.

[0014] Furthermore, an oil chamber is formed between the connecting seat and the sliding block, and the moving direction of the connecting seat is perpendicular to the moving direction of the piston rod.

[0015] Compared with the prior art, the multi-axis workpiece processing device of the present invention includes a spindle and a clamping structure, the clamping structure is used to clamp the workpiece, and the multi-axis workpiece processing device also includes an eccentric structure, the eccentric structure includes a mounting seat, a slider, a cylinder and a piston rod, the mounting seat is connected to the spindle by transmission, the cylinder is fixed to the mounting seat, the piston rod is installed on the cylinder, the cylinder drives the piston rod to move by hydraulic oil, the slider is slidably installed on the mounting seat, the slider is fixedly connected to the piston rod, the clamping structure is installed on the slider, and the piston rod drives the clamping structure to move relative to the mounting seat and the spindle through the slider, so that multiple parallel axes of the workpiece can be coaxial with the spindle. Therefore, when the workpiece is a multi-axis structure, there is no need to replace the fixture or the clamping part. It only needs to be adjusted through the eccentric structure so that multiple parallel axes of the workpiece can be coaxial with the spindle, the processing efficiency is high, and the workpiece processing error is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a multi-axis workpiece processing device according to the present invention;

[0017] Figure 2For Figure 1 Stereogram of the eccentric structure of the multi-axis workpiece processing device of

[0018] Figure 3 For Figure 2 Exploded view of the eccentric structure of

[0019] Figure 4 For Figure 3 Stereogram of the mounting base of the eccentric structure of

[0020] Figure 5 For Figure 2 Stereogram of the internal structure of the eccentric structure of

[0021] Figure 6 For Figure 1 Stereogram of the clamping structure of the multi-axis workpiece processing device of

[0022] Figure 7 For Figure 1 Cross-sectional view of the multi-axis workpiece processing device of

[0023] In the figure: 10, oil distributor; 20, main shaft; 30, eccentric structure; 31, connecting plate; 32, mounting base; 320, locking hole; 321, chute; 322, groove; 323, oil passage; 33, end cover; 330, mounting groove; 34, slider; 340, fixing hole; 341, connecting hole; 35, oil cylinder; 36, piston rod; 37, connecting block; 38, limiting block; 39, oil circuit block; 40, clamping structure; 41, expansion core; 42, expansion sleeve; 43, conical surface seat; 44, connecting seat; 100, cutting tool; 200, workpiece; 201, first axis part; 202, second axis part; 203, third axis part. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] A multi-axis workpiece processing device of the present invention is used to process a multi-axis workpiece, and the workpiece includes a plurality of processing axes that are parallel to each other.

[0028] Please refer to Figure 1 , the multi-axis workpiece processing device includes an oil distributor 10, a main shaft 20, an eccentric structure 30, and a clamping structure 40. The oil distributor 10 is used to drive the eccentric adjustment of the eccentric structure 30 and drive the clamping structure 40 to clamp the workpiece 200. The main shaft 20 is fixedly connected to the eccentric structure 30, the clamping structure 40 is installed on the eccentric structure 30, and the eccentric structure 30 drives the clamping structure 40 to move radially along the workpiece 200 so that the plurality of processing axes of the workpiece 200 can be coaxial with the axis of the main shaft 20.

[0029] Please refer to Figures 2 to 5 , the eccentric structure 30 includes a connection disk 31, a mounting seat 32, an end cover 33, a slider 34, an oil cylinder 35, a piston rod 36, a connection block 37, a limit block 38, and an oil passage block 39. The connection disk 31 is used to connect to the main shaft 20. An oil delivery pipe is provided inside the main shaft 20, and the connection disk 31 is provided with an oil hole. The oil delivery pipe injects or recovers oil into the oil cylinder 35 through the oil hole.

[0030] The mounting seat 32 is provided with a locking hole 320, a chute 321, a groove 322, and an oil passage 323. The locking hole 320 is used to fix the mounting seat 32 and the end cover 33. The chute 321 is arranged along the radial direction of the workpiece 200 and is used to slidably mount the slider 34. The groove 322 is located in the chute 321 and is used to fix the oil cylinder 35. The piston rod 36 is slidably mounted in the groove 322. The oil passage 323 is arranged along the axial direction of the workpiece 200 and is used for liquid path connection.

[0031] The end cover 33 is fixedly connected to the mounting seat 32. The slider 34, the oil cylinder 35, the piston rod 36, the connecting block 37, the limiting block 38 and the oil circuit block 39 are located between the end cover 33 and the mounting seat 32. The end cover 33 is used to protect the slider 34, the oil cylinder 35, the piston rod 36, the connecting block 37, the limiting block 38 and the oil circuit block 39. The end cover 33 is provided with a mounting groove 330 for the clamping structure 40 to slide.

[0032] The slider 34 is slidably mounted in the chute 321, and the piston rod 36 drives the slider 34 to slide. The slider 34 is provided with a fixing hole 340 and a connecting hole 341. The conical seat 43 is fixed to the edge of the fixing hole 340, and the fixing hole 340 and the connecting seat 44 together form an oil cavity. The connecting hole 341 is fixedly connected to the connecting block 37, so that the slider 34 is fixed to the connecting block 37.

[0033] The oil cylinder 35 is fixed in the groove 322, and one end of the piston rod 36 is mounted in the oil cylinder 35. The oil cylinder 35 is communicated with the oil distributor 10, and the oil distributor 10 supplies oil to the oil cylinder 35 to move the piston rod 36. The end of the piston rod 36 is fixedly connected to the connecting block 37, and the connecting block 37 is perpendicular to the piston rod 36. The limiting block 38 is used to limit the moving range of the piston rod 36. Specifically, the number of the limiting blocks 38 is two, and the two limiting blocks 38 are respectively fixed to the mounting seat 32, and the connecting block 37 is located between the two limiting blocks 38.

[0034] The oil circuit block 39 is fixed to the mounting seat 32, and the oil circuit block 39 is used to communicate the oil distributor 10 with the oil cavity for driving the clamping structure 40.

[0035] Please refer to Figure 6 , the clamping structure 40 includes an expansion core 41, an expansion sleeve 42, a conical seat 43 and a connecting seat 44. The expansion core 41 is fixedly connected to the connecting seat 44, the expansion sleeve 42 is mounted on the surface of the expansion core 41, the connecting seat 44 is slidably mounted on the slider 34, the conical seat 43 is fixed to the slider 34, and the conical surface of the conical seat 43 is located between the expansion core 41 and the expansion sleeve 42. The fixing hole 340 and the connecting seat 44 together form an oil cavity. When the oil cavity is filled with oil, the connecting seat 44 drives the expansion core 41 to move rightward, the expansion sleeve 42 leaves the conical surface of the conical seat 43, and the expansion sleeve 42 contracts to loosen the workpiece 200. When the oil in the oil cavity is withdrawn, the connecting seat 44 drives the expansion core 41 to move leftward, the expansion sleeve 42 approaches the conical surface of the conical seat 43, and the expansion sleeve 42 expands to tightly hold the inner wall of the first axial part 201 of the workpiece 200.

[0036] Please refer to Figure 7, when using the multi-axis workpiece processing device, according to the structure of the workpiece 200, when any part of the first axis portion 201, the second axis portion 202, and the third axis portion 203 needs to be processed, when the axis of the portion to be processed is not on the same straight line as the axis of the main shaft 20, the oil distributor 10 injects oil into the oil cylinder 35, the piston rod 36 moves, and the piston rod 36 drives the slider 34 to move through the connecting block 37, thereby driving the clamping structure 40 to move radially along the workpiece 200, so that the axis of the portion to be processed is on the same straight line as the axis of the main shaft 20, and the tool 100 processes the portion to be processed. Therefore, when the workpiece 200 has a multi-axis structure, there is no need to replace the fixture or the clamping part. Only by adjusting through the eccentric structure, the multiple mutually parallel axes of the workpiece 200 can be coaxial with the main shaft 20, the processing efficiency is high, and the workpiece processing error is small.

[0037] The above embodiments only express several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made. These are all equivalent modifications and evolutions made to the above embodiments based on the essential technology of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A multi-axis workpiece processing device, including a main shaft and a clamping structure, the clamping structure being used for clamping a workpiece, characterized in that: The multi-axis workpiece processing device also includes an eccentric structure, which includes a mounting seat, a slider, a cylinder and a piston rod. The mounting seat is connected to the spindle in a transmission manner, the cylinder is fixed to the mounting seat, the piston rod is installed on the cylinder, and the cylinder drives the piston rod to move through hydraulic oil. The slider is slidably installed on the mounting seat, the slider is fixedly connected to the piston rod, and the clamping structure is installed on the slider. The piston rod drives the clamping structure to move relative to the mounting seat and the spindle through the slider, so that multiple parallel axes of the workpiece can be coaxial with the spindle.

2. The multi-axis workpiece machining device according to claim 1, characterized in that: The eccentric structure further comprises an end cover, which is fixedly connected to the mounting seat, and the sliding block, the oil cylinder and the piston rod are located between the end cover and the mounting seat.

3. The multi-axis workpiece processing device according to claim 2, characterized in that: The mounting seat is provided with a slide groove and a groove connected to the slide groove, the oil cylinder is fixed in the groove, one end of the piston rod is located in the oil cylinder, the piston rod is slidably installed in the groove, the slider is slidably installed in the slide groove, and the oil cylinder and the piston rod are located between the mounting seat and the slider.

4. The multi-axis workpiece processing device according to claim 3, wherein: The piston rod is arranged parallel to the sliding block.

5. The multi-axis workpiece processing device according to claim 2, wherein: The eccentric structure further comprises a connecting block, wherein the connecting block is fixedly connected to the piston rod, and the sliding block is fixedly connected to the connecting block.

6. The multi-axis workpiece processing device according to claim 5, wherein: The eccentric structure further comprises a limit block, the number of the limit blocks is two, the two limit blocks are fixed to the mounting seat, and the connecting block is located between the two limit blocks.

7. The multi-axis workpiece processing device according to claim 1, characterized in that: The multi-axis workpiece processing device further comprises an oil distributor, and the oil distributor is connected with the oil cylinder to supply oil to the oil cylinder.

8. The multi-axis workpiece processing device according to claim 7, characterized in that: The eccentric structure also includes an oil circuit block, which is fixed to the mounting seat. The mounting seat and the slider are both provided with oil passages. The oil distributor is connected to the oil circuit block through the oil passage of the mounting seat. The oil circuit block is connected to the oil passage of the slider. The oil distributor drives the clamping structure to tighten the workpiece.

9. The multi-axis workpiece machining device according to claim 1, characterized in that: The clamping structure includes an expanding core, an expanding sleeve, a conical seat and a connecting seat, the expanding sleeve is installed on the expanding core, the conical seat is fixed on the slider, the expanding core is fixed on the connecting seat, the connecting seat is slidably installed on the slider, the conical seat is provided with a conical surface, and the conical surface is located between the expanding core and the expanding sleeve. When the expanding core and the expanding sleeve move, the conical surface contacts the expanding sleeve to cause the expanding sleeve to expand and tighten the workpiece from the inside.

10. The multi-axis workpiece processing device according to claim 9, wherein: An oil chamber is formed between the connecting seat and the sliding block, and the moving direction of the connecting seat is perpendicular to the moving direction of the piston rod.

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