Non-concentric cambered surface part machining jig

Abstract

The invention discloses a non-concentric cambered surface part machining jig which comprises a base, and a part is arranged on the base. The external shaft is rotationally connected with the base, when the driving part is clamped on the rotating shaft, the first cambered surface directly faces the cutter, the part moves around the rotating shaft, and the external shaft is the central axis of the second cambered surface; the rotating shafts are arranged at the two ends of the part, the rotating shafts are the central axes of the first cambered surfaces, and the rotating shafts are parallel to the external shaft; and the driving piece drives the external shaft to rotate. The external shaft is matched with the driving part, so that the two surfaces of the part can be machined without arranging more structures on the part, a cutter does not need to be adjusted, and the machining operation of the two non-concentric cambered surfaces of the part is simpler, more convenient and smoother.

Description

Technical Field

[0001] The invention relates to the field of workpiece processing, in particular to a non-concentric arc surface part processing tool. Background Art

[0002] like Figure 1 The non-concentric arc surface parts shown in the figure have arc surfaces on both sides of the parts. However, the centers of the arcs on both sides do not coincide. Although the centers of the two arcs are staggered, they are located at positions relatively close to each other.

[0003] In processing Figure 1 When it comes to parts like the ones shown in the figure, in order to adapt to the fixture, a rotating shaft corresponding to the arc surface needs to be set so that the fixture can clamp accurately, thereby facilitating the tool to polish or grind the parts or further other processing methods. Due to the small size of the parts and the close distance between the centers of the two arc surfaces, it is difficult to set two rotating shafts for the fixture to adapt to the two arc surfaces respectively. However, the setting of the same rotating shaft cannot meet the processing requirements of the two arc surfaces, resulting in the processing of the two arc surfaces being very troublesome. Summary of the invention

[0004] The present invention provides a non-concentric arc surface part processing jig, which can smoothly process two non-concentric arc surfaces of a part without setting a plurality of supporting shafts.

[0005] The present invention provides a non-concentric arc surface part processing jig adopts the following technical solution:

[0006] A non-concentric arc surface part processing jig, wherein two non-concentric arc surfaces of the part are respectively set as a first arc surface and a second arc surface.

[0007] The invention is characterized by comprising:

[0008] A base, on which the parts are arranged;

[0009] An external shaft is rotatably connected to the base, when the driving member is clamped on the rotating shaft, the first arc surface faces the tool, the part moves around the rotating shaft, and the external shaft is the central axis of the second arc surface;

[0010] A rotating shaft, which is arranged at both ends of the part, is the central axis of the first arc surface, and is parallel to the external shaft;

[0011] A driving member drives the external shaft to rotate.

[0012] When the first arc surface needs to be processed, the driving shaft on the machine tool directly clamps the rotating shafts at both ends of the part to drive the part to rotate, so that the first arc surface rotates along the rotating shaft. During the rotation of the first arc surface, the part of the first arc surface facing the tool always remains in contact with the tool at a constant height, so that the first arc surface is processed by the tool of the processing machine.

[0013] When the second arc surface needs to be processed, if the driving part is still only clamped at different lengths from each point on the second arc surface of the rotating shaft to the central axis of the rotating shaft, the distance from the second arc surface to the tool will keep changing when the rotating shaft rotates; when the distance from the second arc surface to the rotating shaft is less than the radius of the first arc surface, the second arc surface cannot contact the tool; when the distance from the second arc surface to the rotating shaft is greater than the radius of the first arc surface, the second arc surface is blocked by the tool and cannot continue to rotate.

[0014] Therefore, by arranging a jig in the machine tool, the driving member drives the external shaft to rotate, and supports the part from the outside of the part, so that the second arc surface always keeps in contact with the tool with a constant height during the rotation process, and the part of the second arc surface facing the tool always keeps in contact with the tool with a constant height during the rotation process, so that the second arc surface is processed by the tool of the processing machine.

[0015] The cooperation between the external shaft and the driving part makes it possible to process both surfaces of the part without setting up more structures on the part, and there is no need to adjust the tool, making the processing operation of the two non-concentric arc surfaces of the part easier and smoother.

[0016] Preferably, the driving member includes a driving source, and the external shaft is a driving shaft of the driving source.

[0017] Using the drive shaft of the drive source as an external shaft can avoid the need for an additional external shaft. Using the drive shaft to apply force to the parts makes the parts subject to force more directly, avoiding the situation in which the structure is complicated due to the simultaneous setting of the drive shaft and the additional external shaft, which is conducive to simplifying the overall structure.

[0018] Preferably, the driving member also includes two support plates, one of which is connected to the external shaft, the spacing between the two support plates is adjustable, the support plate is connected to the external shaft, the support plate is provided with a clamping member, the two support plates are arranged in parallel, the part is arranged between the two support plates, and the clamping members on the two support plates are respectively clamped against the rotating shafts at both ends of the part.

[0019] The distance between the support plates is adjusted so that the two abutting members are respectively pressed against the rotating shafts at both ends of the part, and the part is supported by the rotating shaft of the first arc surface, avoiding the need to set up an additional structure for clamping the part, which results in a cumbersome fixture structure and makes it difficult to clamp the part. The support plate serves as a connecting medium between the external shaft and the rotating shaft, so that the rotating shaft and the external shaft can be set eccentrically, and then the external shaft can face the central axis of the second arc surface, which is conducive to simplifying the structure.

[0020] Preferably, the clamping member includes a pin arranged on the side wall of the support portion, a socket is provided at the end of the part corresponding to the pin, two pins are provided corresponding to the number of support plates, the pins are respectively clamped against both ends of the part along the length direction, and the pins are arranged to avoid the rotating shaft.

[0021] The ejector cooperates with the rotating shaft to achieve the function of fixing the parts in a straight line between two points, so that the parts and the support plate will not rotate relative to each other. Since the rotating shaft is not located on the central axis of the second arc surface relative to the second arc surface, when the driving member is simply clamped on the rotating shaft, the part may rotate around the rotating shaft. The setting of the ejector can improve the stability of the driving member driving the part, making the external shaft supporting the second arc surface for processing more stable and smooth.

[0022] like Figure 2 and Figure 3 As shown, the shaft setting needs to be provided with a boss for enhancing strength to prevent the shaft from breaking due to excessive clamping force when driving the first arc surface processing. Therefore, the shaft setting occupies a larger space at the end of the part, and the ejector avoids the shaft setting to avoid the boss setting.

[0023] Preferably, the support plate is integrally connected with a supporting protrusion, the protrusion is conical, the end of the rotating shaft is provided with a slot for the end of the protrusion to be inserted, the end of the protrusion away from the support plate is ground flat, and the bottom wall of the slot is set to a plane corresponding to the end of the protrusion.

[0024] When clamping the parts, align the slot with the protrusion and insert it, so that the driver can clamp the parts more firmly. When the parts are subjected to downward force from the tool, the parts are not easy to fall from between the support plates, which is beneficial to improving the stability of processing.

[0025] Preferably, the base is provided with a connecting portion for setting a support plate, the support plate away from the external shaft is movably connected to the connecting portion, an elastic member is provided between the support plate and the connecting plate, and when the part is arranged between the two support plates, the elastic member is in a compressed state.

[0026] The elastic member pushes the support plate connected to the connecting portion, so that the support plate moves toward the direction close to the external shaft to clamp the part. When the part needs to be taken out, the support plate is moved so that the support plate compresses the elastic member and moves toward the direction away from the external shaft.

[0027] Preferably, the connecting part includes a connecting plate and a guide rod, the guide rod passes through the connecting plate so that the guide rod is slidingly and rotatably connected to the connecting plate, the guide rod is connected to a support plate away from the external shaft, and the elastic member is selected as a spring, which is sleeved on the outer periphery of the guide rod.

[0028] Preferably, a force-applying lever is provided on the base, a force-applying portion is provided at one end of the guide rod away from the support plate, and an output end of the force-applying lever abuts against a side of the force-applying portion close to the connecting plate.

[0029] The force applying part is forced by the force applying lever, so that the guide rod slides toward the end close to the force applying rod, thereby driving the support plate to move toward the direction close to the connecting plate, so that the two support plates are separated from each other, which is convenient for taking out the parts.

[0030] Preferably, the force applying lever is V-shaped, the fulcrum of the force applying lever passes through the corner of the force applying lever, and the fulcrum is rotatably connected to the base.

[0031] The force lever is bent to reduce the overall length and occupied space of the force lever.

[0032] Preferably, an extension rod is provided at one end of the force applying lever away from the force applying portion.

[0033] In order to improve the stability of the clamping parts, the spring hardness is relatively strong, so the support plate is not easy to push. The extension rod serves as a labor-saving rod for pushing the force lever to rotate, making it easier to pull the support plate and making it easier for the two support plates to be spaced apart from each other.

[0034] In summary, the present invention includes the following beneficial technical effects:

[0035] By arranging a jig in the machine tool, the driving member drives the external shaft to rotate, and the part is supported from the outside of the part, so that the second arc surface always keeps in contact with the tool with a constant height during the rotation process, and the part of the second arc surface facing the tool always keeps in contact with the tool with a constant height during the rotation process, so that the second arc surface is processed by the tool of the processing machine.

[0036] The cooperation between the external shaft and the driving part makes it possible to process both surfaces of the part without setting up more structures on the part, and there is no need to adjust the tool, making the processing operation of the two non-concentric arc surfaces of the part easier and smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram used to illustrate the structure of the parts that need to be processed.

[0038] Figure 2 It is a schematic diagram for illustrating the structure of the drive and external shaft.

[0039] Figure 3 It is a schematic diagram of the overall structure of a non-concentric arc surface part processing fixture of the present invention.

[0040] Figure 4 It is a structural diagram used to illustrate the relative positions of the shaft and parts.

[0041] Explanation of the reference numerals in the accompanying drawings: 1. part; 2. first arc surface; 3. second arc surface; 4. base; 5. external shaft; 6. rotating shaft; 7. driving member; 8. supporting plate; 9. ejector pin; 10. socket; 11. boss; 12. protrusion; 13. slot; 14. connecting plate; 15. guide rod; 16. spring; 17. force lever; 18. force applying part; 19. extension rod. DETAILED DESCRIPTION

[0042] The following is combined with Figure 2-4 The present invention is described in further detail.

[0043] The embodiment of the invention discloses a non-concentric arc surface part processing jig.

[0044] Reference Figure 2 as well as Figure 3 A non-concentric arc surface part processing fixture, wherein two non-concentric arc surfaces of a part 1 are respectively set as a first arc surface 2 and a second arc surface 3,

[0045] The invention is characterized by comprising:

[0046] A base 4, on which the component 1 is disposed;

[0047] The external shaft 5 is rotatably connected to the base 4. When the driving member 7 is clamped on the rotating shaft 6, the first arc surface 2 faces the tool, the part 1 moves around the rotating shaft 6, and the external shaft 5 is the central axis of the second arc surface 3;

[0048] A rotating shaft 6, which is disposed at both ends of the component 1, the rotating shaft 6 is the central axis of the first arc surface 2, and the rotating shaft 6 is parallel to the external shaft 5;

[0049] The driving member 7 drives the external shaft 5 to rotate.

[0050] When the first arc surface 2 needs to be processed, the driving shaft on the machine tool directly clamps the rotating shafts 6 at both ends of the part 1 to drive the part 1 to rotate, so that the first arc surface 2 rotates along the rotating shaft 6. During the rotation of the first arc surface 2, the part of the first arc surface 2 facing the tool always maintains abutment with the tool at a constant height, so that the first arc surface 2 is processed by the tool of the processing machine.

[0051] When the second arc surface 3 needs to be processed, if the driving member 7 is still only clamped on the rotating shaft 6, the lengths from each point of the second arc surface 3 to the central axis of the rotating shaft 6 are different, when the rotating shaft 6 rotates, the distance from the second arc surface 3 to the tool will keep changing; when the distance from the second arc surface 3 to the rotating shaft 6 is less than the radius of the first arc surface 2, the second arc surface 3 cannot contact the tool; when the distance from the second arc surface 3 to the rotating shaft 6 is greater than the radius of the first arc surface 2, the second arc surface 3 is blocked by the tool and cannot continue to rotate.

[0052] Therefore, by setting a jig in the machine tool, the driving member 7 drives the external shaft 5 to rotate, and supports the part 1 from the outside of the part 1, so that the second arc surface 3 always keeps in contact with the tool with a constant height during the rotation process, and the part of the second arc surface 3 facing the tool always keeps in contact with the tool with a constant height during the rotation process, so that the second arc surface 3 is processed by the tool of the processing machine.

[0053] The cooperation between the external shaft 5 and the driving member 7 enables both surfaces of the part 1 to be processed without setting up more structures on the part 1, and there is no need to adjust the tool, making the processing operation of the two non-concentric arc surfaces of the part 1 easier and smoother.

[0054] Reference Figure 2 as well as Figure 3 In this embodiment, the driving member 7 includes a driving source, and the external shaft 5 is the driving shaft of the driving source.

[0055] Using the driving shaft of the driving source as the external shaft 5 can avoid the need for an additional external shaft 5. By using the driving shaft to apply force to the part 1, the force on the part 1 is more directly applied, and the situation in which the structure is complicated due to the simultaneous provision of the driving shaft and the additional external shaft 5 is avoided, which is conducive to simplifying the overall structure.

[0056] In this embodiment, the driving source is set as a rotating cylinder. In other embodiments, the driving source can also be optionally set as a motor, a reducer or other driving or transmission structure.

[0057] Reference Figure 3 as well as Figure 4 In this embodiment, the driving member 7 also includes two support plates 8, one of which is connected to the external shaft 5, and the distance between the two support plates 8 is adjustable. The support plate 8 is connected to the external shaft 5, and the support plate 8 is provided with a tightening member. The two support plates 8 are arranged in parallel, and the part 1 is arranged between the two support plates 8. The tightening members on the two support plates 8 are respectively tightened to the rotating shafts 6 at both ends of the part 1.

[0058] The distance between the support plates 8 is adjusted so that the two abutting members are respectively abutted against the rotating shafts 6 at both ends of the part 1, and the rotating shafts 6 of the first arc surface 2 are used to support the part 1, avoiding the need to set up an additional structure for clamping the part 1, which results in a cumbersome fixture structure and difficulty in clamping the part 1. The support plate 8 serves as a connecting medium between the external shaft 5 and the rotating shaft 6, so that the rotating shaft 6 and the external shaft 5 can be set eccentrically, and then the external shaft 5 can face the central axis of the second arc surface 3, which is conducive to simplifying the structure.

[0059] Reference Figure 3 as well as Figure 4In this embodiment, the clamping member includes a pin 9 arranged on the side wall of the support portion, and a socket 10 is arranged at the end of the part 1 corresponding to the pin 9. Two pins 9 are arranged corresponding to the support plate 8. The pins 9 are respectively clamped against the two ends of the part 1 along the length direction, and the pins 9 are arranged to avoid the rotating shaft 6.

[0060] The ejector pin 9 cooperates with the rotating shaft 6 to achieve the function of fixing the part 1 in a straight line between two points, so that the part 1 and the support plate 8 will not rotate relative to each other. Since the rotating shaft 6 is not located on the central axis of the second curved surface 3 relative to the second curved surface 3, when the driving member 7 is simply clamped on the rotating shaft 6, the part 1 may rotate around the rotating shaft 6. The setting of the ejector pin 9 can improve the stability of the driving member 7 driving the part 1, so that the external shaft 5 can support the second curved surface 3 for processing more stably and smoothly.

[0061] like Figure 2 and Figure 3 As shown, the shaft 6 needs to be provided with a boss 11 for enhancing the strength to prevent the shaft 6 from breaking due to excessive clamping force when driving the first curved surface 2 for processing. Therefore, the shaft 6 occupies a larger space at the end of the part 1, and the ejector 9 avoids the shaft 6 and even more so the boss 11.

[0062] Reference Figure 3 as well as Figure 4 In this embodiment, the support plate 8 is integrally connected with a support protrusion 12, and the protrusion 12 is conical. The end of the rotating shaft 6 is provided with a slot 13 for the end of the protrusion 12 to be inserted. The end of the protrusion 12 away from the support plate 8 is ground flat, and the bottom wall of the slot 13 is set to be a plane corresponding to the end of the protrusion 12.

[0063] When clamping the part 1, the slot 13 is aligned with the protrusion 12 and inserted, so that the driving member 7 can clamp the part 1 more firmly. When the part 1 is subjected to downward force from the tool, the part 1 is not easy to fall from between the support plates 8, which is beneficial to improving the stability of the processing.

[0064] Reference Figure 3 as well as Figure 4 In this embodiment, a connecting portion for setting a support plate 8 is provided on the base 4, and the support plate 8 away from the external shaft 5 is movably connected to the connecting portion. An elastic member is provided between the support plate 8 and the connecting plate 14. When the part 1 is arranged between the two support plates 8, the elastic member is in a compressed state.

[0065] The elastic member pushes the support plate 8 connected to the connection part, so that the support plate 8 moves toward the direction close to the external shaft 5 to clamp the part 1. When the part 1 needs to be taken out, the support plate 8 is moved so that the support plate 8 compresses the elastic member and moves toward the direction away from the external shaft 5.

[0066] Reference Figure 3 as well as Figure 4 In this embodiment, the connecting portion includes a connecting plate 14 and a guide rod 15. The guide rod 15 penetrates the connecting plate 14 so that the guide rod 15 is slidably connected and rotatably connected to the connecting plate 14. The guide rod 15 is connected to the support plate 8 away from the external shaft 5. The elastic member is selected as a spring 16, and the spring 16 is sleeved on the outer periphery of the guide rod 15.

[0067] The guide rod 15 is used to connect the support plate 8 and can also guide and limit the movement of the support plate 8, while supporting the spring 16 so that the spring 16 can stably expand and contract in its own length direction.

[0068] Reference Figure 3 as well as Figure 4 In this embodiment, a force lever 17 is provided on the base 4 , and a force applying portion 18 is provided at one end of the guide rod 15 away from the support plate 8 , and the output end of the force lever 17 abuts against a side of the force applying portion 18 close to the connecting plate 14 .

[0069] The force applying part 18 is forced by the force applying lever 17, so that the guide rod 15 slides toward the end close to the force applying rod, thereby driving the support plate 8 to move toward the direction close to the connecting plate 14, so that the two support plates 8 are separated from each other, which facilitates the removal of the part 1.

[0070] Reference Figure 3 as well as Figure 4 In the present embodiment, the force applying lever 17 is V-shaped, the fulcrum of the force applying lever 17 passes through the corner of the force applying lever 17 , and the fulcrum is rotatably connected to the base 4 .

[0071] The force lever 17 is bent to reduce the overall length and space occupied by the force lever 17. In this embodiment, the rotation axis of the force lever 17 is arranged perpendicular to the base 4, and the force lever 17 is arranged on one side of the guide rod 15.

[0072] In other embodiments, the rotation axis of the force lever 17 is arranged parallel to the base 4, and the force lever 17 is arranged at the bottom of the guide rod 15. The force lever 17 can be rotated by pressing down the end of the force lever 17 away from the guide rod 15, thereby pulling the guide rod 15.

[0073] In other embodiments, the rotation axis of the force lever 17 is arranged parallel to the base 4, and the force lever 17 is arranged on the top of the guide rod 15. The force lever 17 can be rotated by rotating one end of the force lever 17 away from the guide rod 15 upward, thereby pulling the guide rod 15.

[0074] Reference Figure 3 as well as Figure 4 In this embodiment, an extension rod 19 is provided at one end of the force applying lever 17 away from the force applying portion 18 .

[0075] In order to improve the stability of the clamping part 1, the spring 16 has a higher hardness, so the support plate 8 is not easy to push. The extension rod 19 serves as a labor-saving rod to push the force lever 17 to rotate, making it easier to pull the support plate 8 and making it easier for the two support plates 8 to be spaced apart from each other.

[0076] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-concentric arc surface part processing jig, wherein two non-concentric arc surfaces of a part (1) are respectively set as a first arc surface (2) and a second arc surface (3), It is characterized in that include: A base (4), wherein the component (1) is arranged on the base (4); The external shaft (5) is rotatably connected to the base (4); when the driving member (7) is clamped on the rotating shaft (6), the first arc surface (2) faces the tool, the part (1) moves around the rotating shaft (6), and the external shaft (5) is the central axis of the second arc surface (3); A rotating shaft (6), the rotating shaft (6) being arranged at both ends of the component (1), the rotating shaft (6) being the central axis of the first arc surface (2), and the rotating shaft (6) being parallel to the external shaft (5); The driving member (7) drives the external shaft (5) to rotate.

2. The non-concentric arc surface part processing jig according to claim 1 is characterized in that: The driving member (7) comprises a driving source, and the external shaft (5) is a driving shaft of the driving source.

3. The non-concentric arc surface part processing jig according to claim 2 is characterized in that: The driving member (7) further comprises two supporting plates (8), one of which is connected to the external shaft (5), the spacing between the two supporting plates (8) is adjustable, the supporting plate (8) is connected to the external shaft (5), the supporting plate (8) is provided with a clamping member, the two supporting plates (8) are arranged in parallel, the part (1) is arranged between the two supporting plates (8), and the clamping members on the two supporting plates (8) are respectively clamped against the rotating shafts (6) at both ends of the part (1).

4. The non-concentric arc surface part processing jig according to claim 3 is characterized in that: The abutting member comprises a pin (9) arranged on the side wall of the supporting portion, a plug hole (10) is arranged at the end of the part (1) corresponding to the pin (9), two pins (9) are arranged corresponding to the number of the supporting plate (8), the pins (9) are respectively abutted against the two ends of the part (1) along the length direction, and the pins (9) are arranged to avoid the rotating shaft (6).

5. The non-concentric arc surface part processing jig according to claim 4 is characterized in that: The support plate (8) is integrally connected with a support protrusion (12), the protrusion (12) is conical, and the end of the rotating shaft (6) is provided with a slot (13) for the end of the protrusion (12) to be inserted, the end of the protrusion (12) away from the support plate (8) is ground flat, and the bottom wall of the slot (13) is set to be a plane corresponding to the end of the protrusion (12).

6. The non-concentric arc surface part processing jig according to claim 3 is characterized in that: The base (4) is provided with a connecting portion for arranging a support plate (8), the support plate (8) away from the external shaft (5) is movably connected to the connecting portion, an elastic member is provided between the support plate (8) and the connecting plate (14), and when the part (1) is arranged between the two support plates (8), the elastic member is in a compressed state.

7. The non-concentric arc surface part processing jig according to claim 6 is characterized in that: The connecting portion comprises a connecting plate (14) and a guide rod (15), wherein the guide rod (15) penetrates the connecting plate (14) so ​​that the guide rod (15) and the connecting plate (14) are slidably connected and rotatably connected, and the guide rod (15) is connected to a support plate (8) away from the external shaft (5), and the elastic member is selected as a spring (16), and the spring (16) is sleeved on the outer periphery of the guide rod (15).

8. The non-concentric arc surface part processing jig according to claim 7 is characterized in that: The base (4) is provided with a force-applying lever (17), the end of the guide rod (15) away from the support plate (8) is provided with a force-applying portion (18), and the output end of the force-applying lever (17) abuts against a side of the force-applying portion (18) close to the connecting plate (14).

9. The non-concentric arc surface part processing jig according to claim 8, characterized in that: The force applying lever (17) is V-shaped, the fulcrum of the force applying lever (17) passes through the corner of the force applying lever (17), and the fulcrum is rotatably connected to the base (4).

10. The non-concentric arc surface part processing jig according to claim 8, characterized in that: An extension rod (19) is provided at one end of the force applying lever (17) away from the force applying portion (18).

Images