Four-axis tool for machining universal joint

Abstract

The utility model discloses a four-axis tool for processing a universal joint, which belongs to the technical field of universal joints and comprises a support, a limit table for fixing a workpiece is arranged on one side of the support, a mounting component for fixing the workpiece is mounted at one end of the limit table, and the mounting component comprises a bolt mounted at one end of the support and used for fixing. The outer side of the bolt is sleeved with a gasket used for fixing, the portion, located on the outer side of the bolt, of one side of the gasket is sleeved with a cover plate used for extruding the workpiece, and the bolt drives the gasket to extrude and fix the cover plate, so that the gasket clamps and fixes the workpiece on the outer side of the limiting table through the cover plate. The problems that an existing device is prone to loosening in the machining process of the workpiece, the existing device cannot conveniently conduct retaining and limiting on a clamping structure, consequently, the device drives the workpiece to conduct machining inaccurately, and the stability and practicability of the device driving the workpiece to conduct machining are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal joints, in particular to a four-axis tooling for machining universal joints. Background Art

[0002] The universal joint is a joint that connects two levers. The joint consists of a pair of ordinary hinges with a relative orientation of 90°, which allows the lever to turn in any direction. It is still widely used in the transmission system of vehicles. The universal joint has high requirements for dimensional accuracy and form and position tolerance during the production and processing process. Therefore, the size should be completed by clamping once as much as possible. This can effectively avoid the cumulative error caused by multiple clamping, which makes it difficult to ensure the form and position tolerance. The existing equipment is prone to loosening when fixing the workpiece, and the fixing stability is low.

[0003] The existing equipment is prone to loosening of the workpiece during the processing, and the existing equipment is not able to conveniently limit the retreat of the clamping structure, resulting in inaccurate processing of the workpiece driven by the equipment, affecting the stability and practicality of the workpiece driven by the equipment for processing. Therefore, technical personnel in this field provide a four-axis tooling for processing universal joints to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a four-axis tooling for machining a universal joint, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-axis tooling for machining universal joints, comprising a support, one side of the support is provided with a limit table for fixing a workpiece, and one end of the limit table is equipped with a mounting assembly for fixing the workpiece;

[0006] The mounting assembly includes a bolt installed at one end of the support for fixing, a washer for fixing is sleeved on the outside of the bolt, a cover plate for squeezing the workpiece is sleeved on one side of the washer and located on the outside of the bolt, a backstop assembly for preventing the bolt from loosening is installed on the inside of the cover plate, the bolt is movably connected to the washer, the bolt passes through the cover plate and is movably connected to the cover plate, the other end of the support is installed and fixed to the four-axis turntable, and the bolt is threadedly connected to the limit platform.

[0007] Preferably: the anti-retraction assembly includes a screw installed on the inner side of the cover plate for driving, a pressure block for extrusion is mounted on the bottom of the screw, a notch for providing a movable space is provided on the other side of the limit platform, a fixing strip is installed on one side of the notch, a locking block for anti-retraction is installed on one end of the fixing strip, a anti-retraction groove for fixing is provided on the top of the bolt, the screw passes through the cover plate and is threadedly connected thereto, the screw is rotatably connected to the pressure block, the fixing strip is fixedly connected to the limit platform, and the fixing strip is elastic.

[0008] Preferably, an anti-skid sleeve for fixing is laid on the outer side of the limiting platform, and an anti-skid pad for fixing is embedded on the other side of the cover plate.

[0009] Preferably, a movable cavity is provided inside the cover plate and outside the screw rod, a guide rod is connected to the top of the pressing block, and the guide rod is slidably connected to the movable cavity.

[0010] Preferably: a pin shaft for positioning is installed on the other side of the support.

[0011] Preferably, the other side of the cover plate is connected to four circumferentially arranged positioning rods, one end of the limit platform is provided with four circumferentially arranged positioning grooves, and the positioning rods are movably connected to the positioning grooves.

[0012] Preferably, one end of the pressing block is provided with a pushing portion for pushing, and one end of the fixing bar is provided with a driven portion for sliding, and the cross-sections of the pushing portion and the driven portion are both arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by setting a limit table and a cover plate, the workpiece can be sleeved on the outside of the limit table, and then the cover plate is installed on the outside of the limit table and on one side of the workpiece, and then the bolt drives the washer to be inserted into the inner side of the limit table for screwing and fixing, and at the same time, the bolt drives the washer to squeeze and fix the cover plate, so that the washer clamps and fixes the workpiece on the outside of the limit table through the cover plate, and is installed and fixed with the four-axis turntable through the other end of the support. The four-axis tooling can process the part size under one clamping, improve product quality and production efficiency, and is suitable for batch processing. At the same time, the four-axis tooling has a simple structure, is easy to use, and has a low manufacturing cost.

[0015] 2. In the utility model, a screw rod, a pressure block, a fixing strip and a backstop groove are provided. The fixing strip is made of elastic rubber. The cover plate is mounted on the outside of the limit platform. The gasket is driven by the bolt to install and fix the workpiece through the cover plate. The cover plate drives the pressure block to be embedded in the position between the fixing strip and the notch through the screw rod. The pressure block is then driven downward by the screw rod. Then, one end of the pressure block squeezes the locking block at the bottom of one end of the fixing strip and is embedded in the backstop groove. The locking block locks and fixes the bolt through the backstop groove to prevent the bolt from being loosened when the support drives the workpiece for processing through the limit platform, thereby avoiding shaking of the workpiece and improving the stability of the equipment in fixing the workpiece.

[0016] 3. In the present invention, a guide rod is provided to guide and limit the pressing block, thereby preventing the pressing block from deflecting or rotating, and improving the stability of the pressing block driven by the screw to move up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0019] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 It is a structural schematic diagram of the support, the limit platform and the pin shaft in the overall structure of the utility model.

[0021] In the figure: 1. support; 2. limit platform; 3. bolt; 4. washer; 5. cover plate; 6. screw; 7. pressure block; 8. notch; 9. fixing strip; 10. locking block; 11. anti-retraction groove; 12. anti-slip sleeve; 13. anti-slip pad; 14. movable cavity; 15. guide rod; 16. pin shaft; 17. positioning rod; 18. positioning groove; 19. pushing part; 20. driven part. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 to Figure 4 In the embodiment of the utility model, a four-axis tooling for processing universal joints includes a support 1, a limit platform 2 for fixing a workpiece is provided on one side of the support 1, a mounting assembly for fixing the workpiece is installed at one end of the limit platform 2, the mounting assembly includes a bolt 3 installed at one end of the support 1 for fixing, a washer 4 for fixing is sleeved on the outside of the bolt 3, a cover plate 5 for squeezing the workpiece is sleeved on one side of the washer 4 and located on the outside of the bolt 3, a stop assembly for preventing the bolt 3 from loosening is installed on the inside of the cover plate 5, the bolt 3 is movably connected with the washer 4, the bolt 3 passes through the cover plate 5 and is movably connected with the cover plate 5, the other end of the support 1 is fixedly installed with the four-axis turntable, and the bolt 3 is screwed to the limit platform 2.

[0024] When in use, the workpiece can be sleeved on the outside of the limit platform 2, and then the cover plate 5 is installed on the outside of the limit platform 2 and located on one side of the workpiece, and then the bolt 3 drives the washer 4 to be inserted into the inside of the limit platform 2 for screwing and fixing, and at the same time, the bolt 3 drives the washer 4 to squeeze and fix the cover plate 5, so that the washer 4 clamps and fixes the workpiece on the outside of the limit platform 2 through the cover plate 5, and is installed and fixed with the four-axis turntable through the other end of the support 1. The four-axis tooling can process the part size under one clamping.

[0025] In one embodiment, specifically, the anti-retraction assembly includes a screw rod 6 installed on the inner side of the cover plate 5 for driving, a pressure block 7 for extrusion is mounted on the bottom of the screw rod 6, a notch 8 for providing a movable space is opened on the other side of the limit platform 2, a fixing strip 9 is installed on one side of the notch 8, a locking block 10 for anti-retraction is installed on one end of the fixing strip 9, an anti-retraction groove 11 for fixing is opened on the top of the bolt 3, the screw rod 6 passes through the cover plate 5 and is threadedly connected thereto, the screw rod 6 is rotatably connected to the pressure block 7, the fixing strip 9 is fixedly connected to the limit platform 2, and the fixing strip 9 is elastic.

[0026] Among them, the cover plate 5 drives the pressure block 7 to be embedded in the position between the fixing strip 9 and the notch 8 through the screw rod 6, and then drives the pressure block 7 to move downward through the screw rod 6, and then one end of the pressure block 7 squeezes the locking block 10 at the bottom of one end of the fixing strip 9 and embeds it into the anti-retraction groove 11, so that the locking block 10 locks and fixes the bolt 3 through the anti-retraction groove 11 to prevent the bolt 3 from being loosened due to force when the support 1 drives the workpiece for processing through the limit table 2.

[0027] Furthermore, an anti-slip sleeve 12 for fixing is laid on the outer side of the limit platform 2, and an anti-slip pad 13 for fixing is embedded on the other side of the cover plate 5. The anti-slip sleeve 12 and the anti-slip pad 13 can protect the workpiece from bumps or scratches, and can also improve the anti-slip properties of the limit platform 2 and the cover plate 5 for fixing the workpiece.

[0028] In one embodiment, specifically, a movable cavity 14 is opened on the inner side of the cover plate 5 and on the outer side of the screw rod 6, and a guide rod 15 is connected to the top of the pressing block 7. The guide rod 15 is slidably connected to the movable cavity 14. The guide rod 15 can be used to guide and limit the pressing block 7 to prevent the pressing block 7 from shifting or rotating.

[0029] A pin shaft 16 for positioning is installed on the other side of the support 1. The pin shaft 16 can be embedded in the workpiece to position the workpiece and prevent the workpiece from shifting.

[0030] Among them, four circumferentially arranged positioning rods 17 are connected to the other side of the cover plate 5, and four circumferentially arranged positioning grooves 18 are opened at one end of the limit platform 2. The positioning rods 17 are movably connected to the positioning grooves 18. The four positioning rods 17 can install and position the cover plate 5 to prevent the cover plate 5 from shifting.

[0031] Among them, a pushing part 19 for pushing is provided at one end of the pressure block 7, and a driven part 20 for sliding is provided at one end of the fixing bar 9. The cross-sections of the pushing part 19 and the driven part 20 are both arc-shaped. When the cover plate 5 drives the pressure block 7 to enter the notch 8, the pushing part 19 contacts the driven part 20 to facilitate the pressure block 7 to enter between the notch 8 and the fixing bar 9, thereby avoiding damage caused by contact between the pressure block 7 and the fixing bar 9.

[0032] The working principle of this utility model:

[0033] First, place the workpiece on the anti-slip sleeve 12 of the limit platform 2 on one side of the support 1, and then push the workpiece so that the pin shaft 16 is embedded in the workpiece, and then the cover plate 5 is installed on the outside of the limit platform 2 and is located on one side of the workpiece. At the same time, the cover plate 5 drives the positioning rod 17 to be inserted into the positioning groove 18, and then the bolt 3 drives the washer 4 to be inserted into the inner side of the limit platform 2 for screwing and fixing. At the same time, the bolt 3 drives the washer 4 to squeeze and fix the cover plate 5. At this time, the washer 4 clamps and fixes the workpiece on the outside of the limit platform 2 through the cover plate 5, and at the same time, the anti-slip pad 13 on one side of the cover plate 5 is tightly connected to the other side of the workpiece. The cover plate 5 drives the pressing block 7 through the screw rod 6 to be embedded in the position between the fixing strip 9 and the notch 8. At the same time, the pushing part 19 contacts and slides with the driven part 20, and then drives the pressing block 7 to move downward through the screw rod 6. The pressing block 7 drives the guide rod 15 to slide in the movable cavity 14. Then, one end of the pressing block 7 squeezes the locking block 10 at the bottom of one end of the fixing strip 9 and is embedded in the anti-retraction groove 11, so that the locking block 10 locks and fixes the bolt 3 through the anti-retraction groove 11 to prevent the bolt 3 from being loosened due to force when the support 1 drives the workpiece through the limit table 2 for processing.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A four-axis tooling for machining a universal joint, comprising a support (1), characterized in that: A limiting platform (2) for fixing the workpiece is provided on one side of the support (1), and a mounting assembly for fixing the workpiece is installed on one end of the limiting platform (2); The mounting assembly comprises a bolt (3) mounted on one end of a support (1) for fixing, a washer (4) for fixing is sleeved on the outer side of the bolt (3), a cover plate (5) for pressing a workpiece is sleeved on one side of the washer (4) and located on the outer side of the bolt (3), a stop assembly for preventing the bolt (3) from loosening is mounted on the inner side of the cover plate (5), the bolt (3) is movably connected to the washer (4), the bolt (3) passes through the cover plate (5) and is movably connected thereto, the other end of the support (1) is fixedly mounted on the four-axis turntable, and the bolt (3) is screwed to the limit platform (2).

2. A four-axis tooling for machining universal joints according to claim 1, characterized in that: The anti-retraction assembly comprises a screw rod (6) installed on the inner side of the cover plate (5) for driving, a pressure block (7) for extrusion is mounted on the bottom of the screw rod (6), a notch (8) for providing a movable space is provided on the other side of the limit platform (2), a fixing strip (9) is installed on one side of the notch (8), a locking block (10) for anti-retraction is installed on one end of the fixing strip (9), an anti-retraction groove (11) for fixing is provided on the top of the bolt (3), the screw rod (6) passes through the cover plate (5) and is screwed thereto, the screw rod (6) is rotatably connected to the pressure block (7), the fixing strip (9) is fixedly connected to the limit platform (2), and the fixing strip (9) is elastic.

3. The four-axis tooling for machining universal joints according to claim 1, characterized in that: The outer side of the limiting platform (2) is provided with an anti-slip sleeve (12) for fixing, and the other side of the cover plate (5) is provided with an anti-slip pad (13) for fixing.

4. The four-axis tooling for machining universal joints according to claim 2, characterized in that: An active cavity (14) is provided inside the cover plate (5) and outside the screw rod (6), and a guide rod (15) is connected to the top of the pressing block (7), and the guide rod (15) is slidably connected to the active cavity (14).

5. The four-axis tooling for machining universal joints according to claim 1, characterized in that: A pin shaft (16) for positioning is installed on the other side of the support (1).

6. The four-axis tooling for machining universal joints according to claim 1, characterized in that: The other side of the cover plate (5) is connected to four circumferentially arranged positioning rods (17), one end of the limit platform (2) is provided with four circumferentially arranged positioning grooves (18), and the positioning rods (17) are movably connected to the positioning grooves (18).

7. The four-axis tooling for machining universal joints according to claim 2, characterized in that: One end of the pressing block (7) is provided with a pushing portion (19) for pushing, and one end of the fixing bar (9) is provided with a driven portion (20) for sliding, and the cross-sections of the pushing portion (19) and the driven portion (20) are both arc-shaped.

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