Gear shaping clamp

Abstract

The gear shaping clamp comprises a base and a cone base, the center of the cone base is hollow to form a vertical groove for containing a workpiece, a positioning base is arranged at the bottom end of the vertical groove, a first inclined face used for abutting against one end of the workpiece is arranged on the positioning base, and a mounting groove is formed in the inner wall of the top of the cone base; a mounting groove is formed in the vertical groove, a locking nut is in threaded connection with the interior of the mounting groove, an expansion sleeve is mounted on the locking nut, second inclined planes which abut against each other are arranged between the expansion sleeve and the cone base, a reducing sleeve is arranged between the expansion sleeve and the workpiece, and after the workpiece is placed in the vertical groove, the bottom end of the workpiece is firstly positioned through the first inclined planes on the bottom positioning base; then the locking nut is rotated to move downwards to drive the expansion sleeve to move downwards, the expansion sleeve is driven to deform by means of abutting of the second inclined face to achieve fixation of the expanded workpiece, positioning and fixing of the bottom end and the top end of the workpiece are well achieved, the structure is simple, operation is convenient, the stability is good after the workpiece is expanded and fixed, and then the follow-up machining precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of clamps, in particular to a gear inserting clamp. Background Art

[0002] A fixture is a process equipment used to position, clamp and fix workpieces or components such as tools during machining, assembly and other processes to keep them in the correct position and posture for processing or operation. Different types of fixtures are used for different workpieces.

[0003] The gear shaping fixture is a process equipment used for gear shaping processing. The general gear shaping fixture adopts three-jaw chuck, four-jaw chuck, etc. It has strong versatility and can clamp a variety of different types and sizes of gear blanks. It is suitable for single-piece and small-batch production. However, in the actual production process, some workpieces may be large in volume and thin in wall thickness. Using three-jaw chuck or four-jaw chuck for clamping may easily cause workpiece deformation and affect the processing accuracy. In addition, simply clamping one end of the workpiece may cause insufficient stability. Summary of the invention

[0004] In order to further improve the clamping stability and processing accuracy, the present application provides a gear inserting clamp.

[0005] The present application provides a gear shaping fixture, which adopts the following technical solution: A gear inserting fixture comprises a base and a conical seat, wherein the center of the conical seat is hollow to form a vertical groove for placing a workpiece, a positioning seat is arranged at the bottom end of the vertical groove, the positioning seat has a first inclined surface for abutting against one end of the workpiece, a mounting groove is arranged on the top inner wall of the conical seat, a locking nut is threadedly connected to the mounting groove, an expansion sleeve is installed on the locking nut, a second inclined surface abutting against each other is arranged between the expansion sleeve and the conical seat, and a reducing sleeve is arranged between the expansion sleeve and the workpiece.

[0006] Optionally, the interior of the base is hollow and is provided with a guide seat, and the guide seat is provided with a guide column adapted to the inner diameter of the workpiece.

[0007] Optionally, the expansion sleeve is rotationally connected to the locking nut and vertically linked.

[0008] Optionally, a limit seat is detachably connected to the base, and the bottom of the conical seat has a limit groove adapted to the limit seat.

[0009] Optionally, the center of the guide column is vertically penetrated to form a chip groove.

[0010] Optionally, the top of the chip removal groove has a conical guide portion, and the diameter of the guide portion gradually decreases from top to bottom.

[0011] Optionally, a slot for inserting a workpiece is formed between the guide column and the base, a connecting hole is opened on the guide column, the connecting hole connects the slot and the chip groove, and the position of the first inclined surface corresponds to the connecting hole.

[0012] Optionally, the positioning seat is threadedly connected to the base and has an operating groove at the bottom.

[0013] Optionally, baffles are symmetrically arranged on the inner wall of the chip groove, and the back side of the baffles is hinged on the inner wall of the chip groove. The facing ends of the baffles are embedded with attractive magnet blocks. The baffles are located above the connecting hole and are used to cover the connecting hole when flipped down.

[0014] Optionally, the positioning seat includes a fixed part and a sliding part, the sliding part is horizontally slidably connected to the fixed part, the sliding part is slidably adapted to the connecting hole, a first driving source for driving the sliding part to move horizontally is provided on the base, and the first inclined surface is provided on the sliding part.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the workpiece is placed in the vertical groove, the bottom end is first positioned by the first inclined surface on the bottom positioning seat, and then the locking nut is rotated downward to drive the expansion sleeve downward, and the expansion sleeve is deformed by the contact of the second inclined surface to achieve the tightening and fixing of the workpiece, which well realizes the positioning and fixing of the bottom and top ends of the workpiece. The structure is simple and the operation is convenient. The workpiece has good stability after tightening and fixing, thereby ensuring the subsequent processing accuracy; 2. The design of the chip groove facilitates the discharge of the debris that falls during the processing, avoiding the accumulation of a large amount of debris in the vertical groove. The guide part guides the debris into the chip groove; 3. The design of the connecting hole can guide the debris in the slot to the chip discharge groove for discharge, avoiding the accumulation of debris in the slot, and the first inclined surface on the positioning seat can also guide the debris, effectively guiding the debris in the slot into the connecting hole, realizing the multi-purpose of the first inclined surface; 4. The baffle is designed to receive the debris. When the weight of the debris reaches a certain level, the baffle is driven to flip down. The flipped-down baffle covers the connecting hole, which effectively prevents a large amount of debris from entering the connecting hole and being difficult to discharge. The debris remaining in the connecting hole can be cleaned by driving the sliding part to move by the first driving source. The sliding part pushes the debris in the connecting hole into the chip discharge groove and drives the baffle to flip up and reset at the same time, thereby realizing the flipping and resetting of the baffle simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of Example 1.

[0017] Figure 2This is the overall structural diagram of Example 2.

[0018] Figure 3 This is the overall structural diagram of Example 3.

[0019] Figure 4 It is a schematic diagram of the structure of the positioning seat in Example 3.

[0020] Figure 5 This is the overall structural diagram of Example 4.

[0021] Description of reference numerals: 1. Base; 2. Conical seat; 3. Workpiece; 4. Vertical groove; 5. Through groove; 6. Guide seat; 7. Guide column; 8. Slot; 9. Positioning seat; 10. First inclined surface; 11. Mounting groove; 12. Locking nut; 13. Expansion sleeve; 14. Second inclined surface; 15. Reducer sleeve; 16. Limit seat; 17. Limit groove; 18. Chip groove; 19. Guide part; 20. Connecting hole; 21. Thread groove; 22. Operating groove; 23. Fixed part; 24. Sliding part; 25. First driving source; 26. Baffle; 27. Magnet block; 28. Slide groove; 29. ​​Second driving source; 30. Air nozzle; 31. Push switch. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-5 This application is described in further detail.

[0023] Embodiment 1, a gear-slotting fixture, such as Figure 1 As shown, it includes a base 1 and a conical seat 2, and the conical seat 2 is detachably connected to the top of the base 1 by screws. The center of the conical seat 2 is vertically hollow and forms a vertical groove 4 for placing the workpiece 3. In this embodiment, the workpiece 3 takes a thin-walled gear sleeve as an example. A vertical through groove 5 is opened in the center of the base 1, and a guide seat 6 adapted thereto is installed in the through groove 5. The top of the guide seat 6 has a guide column 7 for inserting into the bottom end of the workpiece 3. The guide column 7 is adapted to the inner diameter of the bottom end of the workpiece 3. With the help of the guide column 7, the vertical placement of the workpiece 3 can be guided, which facilitates the convenience of placing the workpiece 3.

[0024] like Figure 1 As shown, there is a spacing between the guide seat 6 and the base 1 and a slot 8 is formed. The slot 8 is used for the bottom end of the workpiece 3 to be inserted. The guide seat 6 is detachably connected with a positioning seat 9 corresponding to the slot 8. The positioning seat 9 is fixed to the guide seat 6 by screws. The top of the positioning seat 9 has a first inclined surface 10 for abutting against the bottom end of the workpiece 3. The bottom end surface of the workpiece 3 has a chamfered portion adapted to the first inclined surface 10. In this way, after the workpiece 3 is placed in the vertical groove 4, its bottom end is inserted into the slot 8 after being guided by the guide column 7, and the bottom end is positioned and centered with the help of the first inclined surface 10.

[0025] like Figure 1 As shown, a mounting groove 11 is provided at the top of the conical seat 2, and a locking nut 12 and an expansion sleeve 13 are installed in the mounting groove 11. The locking nut 12 is threadedly connected to the mounting groove 11, and the expansion sleeve 13 is installed at the bottom end of the locking nut 12. The locking nut 12 is rotated to achieve up and down movement adjustment, and the expansion sleeve 13 is adjusted up and down with the locking nut 12. The bottom outer wall of the expansion sleeve 13 and the bottom inner wall of the mounting groove 11 are provided with a second inclined surface 14 that is inclined and abuts against each other. In actual use, the locking nut 12 is rotated to drive it to move downward for adjustment. During the downward movement of the expansion sleeve 13, it is deformed under the action of the second inclined surface 14 to achieve tightening. In addition, a reducing sleeve 15 is provided between the workpiece 3 and the expansion sleeve 13, and the expansion sleeve 13 applies a tightening force to the reducing sleeve 15, and finally the top of the workpiece 3 is clamped and fixed by means of a slight deformation of the reducing sleeve 15. The reducing sleeve 15 can be made of mold steel. The design of the reducing sleeve 15 increases the radial tightening and fixing stroke of the expanding sleeve 13, and can better clamp the workpiece 3. An operating hole is opened on the top wall of the locking nut 12, and the operating hole is used to drive the locking nut 12 to rotate for adjustment; in this embodiment, the expanding sleeve 13 is hooked with the locking nut 12 and the two are rotatably connected, and the expanding sleeve 13 is axially linked with the locking nut 12, so that the locking nut 12 will not drive the expanding sleeve 13 to rotate during rotation, but the two can move axially synchronously, and the stability of the expanding sleeve 13 can be maintained during adjustment.

[0026] In this way, after the workpiece 3 is placed in the vertical groove 4, the bottom end is first positioned by the first inclined surface 10 on the bottom positioning seat 9, and then the locking nut 12 is rotated downward to drive the expansion sleeve 13 to move downward, and the expansion sleeve 13 is deformed by means of the abutment of the second inclined surface 14 to achieve the tightening and fixation of the workpiece 3, thereby achieving good positioning and fixation of the bottom and top ends of the workpiece 3. The structure is simple and the operation is convenient. After the workpiece 3 is tightened and fixed, it has good stability, thereby ensuring the subsequent processing accuracy.

[0027] like Figure 1 As shown, a limit seat 16 is detachably connected to the top wall of the base 1, and the limit seat 16 is fixed to the base 1 by screws. The limit seat 16 is higher than the top wall of the base 1. At the same time, a limit groove 17 adapted to the limit seat 16 is opened at the bottom of the cone seat 2. The setting of the limit seat 16 can play a role in limiting and positioning. When the cone seat 2 is installed on the base 1, the limit seat 16 can be used for positioning and adaptation, which is more convenient for the installation of the cone seat 2. In this way, the overall structure of the base 1 and the cone seat 2 is simpler, which is convenient to reduce the difficulty of production.

[0028] like Figure 1As shown, the center of the guide column 7 is vertically penetrated to form a chip groove 18, and the top of the chip groove 18 is connected to the inside of the vertical groove 4, so that some debris generated in the actual production and processing process can fall down and be discharged directly from the bottom of the chip groove 18, avoiding the accumulation of debris inside. In addition, there is a final guide portion 19 at the top of the chip groove 18, and the diameter of the guide portion 19 gradually decreases from top to bottom, so that the opening at the top of the chip groove 18 is larger, and the guide portion 19 can play a good guiding and guiding role for the debris, and can better guide the debris into the chip groove 18 for discharge.

[0029] like Figure 1 As shown, a connecting hole 20 is radially opened on the side wall of the guide column 7. The connecting holes 20 are symmetrically arranged or evenly distributed around the circumference. One end of the connecting hole 20 is connected to the slot 8, and the other end is connected to the chip removal groove 18. Since it is inevitable that some debris and impurities will fall into the slot 8 in actual use, if these debris and impurities are accumulated in the slot 8 for a long time, it will affect the subsequent plug-in positioning of the workpiece 3. With the help of the design of the connecting hole 20, the debris and impurities in the slot 8 can be discharged into the chip removal groove 18 through the connecting hole 20, so as to achieve unified chip removal and avoid the accumulation of debris and impurities in the slot 8; in addition, the position of the first inclined surface 10 corresponds to the connecting hole 20, the bottom end of the first inclined surface 10 is close to the connecting hole 20, and the bottom end of the first inclined surface 10 is appropriately higher than the bottom wall of the connecting hole 20, so that the first inclined surface 10 can also guide and discharge the debris and impurities, so that the debris and impurities in the slot 8 can be more easily discharged into the connecting hole 20 under the action of their own gravity, so as to achieve the multi-purpose of the first inclined surface 10, and the overall structure is simpler and more compact.

[0030] The working principle of the embodiment of the present application is as follows: the workpiece 3 is inserted into the vertical groove 4, and the bottom end of the workpiece 3 abuts against the first inclined surface 10 of the positioning seat 9 to achieve positioning and centering of the bottom end of the corresponding workpiece 3, and then the reducing sleeve 15 is placed between the workpiece 3 and the expanding sleeve 13, and then the locking nut 12 is rotated to drive the expanding sleeve 13 to move downward, and with the help of the second inclined surface 14, the expanding sleeve 13 is driven to apply force to the reducing sleeve 15 to cause deformation, and finally the upper end of the workpiece 3 is clamped and fixed.

[0031] Embodiment 2, a gear-slotting fixture, such as Figure 2As shown, the difference between it and Example 1 mainly lies in the different connection and installation structure of the positioning seat 9. In this embodiment, the positioning seat 9 is threadedly connected to the base 1, and a thread groove 21 threadedly connected to the positioning seat 9 is opened on the base 1, and an operating groove 22 is opened at the bottom end of the positioning seat 9. The positioning seat 9 can be driven to rotate with the help of the operating groove 22 to achieve the adjustment of the height position of the first inclined surface 10 at its top, so that the position of the first inclined surface 10 can be adjusted for workpieces 3 of different lengths to meet the use of more workpieces 3 of different specifications and sizes. While rotating the positioning seat 9 to adjust the height of the first inclined surface 10, the size of the opening at the connection between the slot 8 and the connecting hole 20 is adjusted simultaneously, thereby achieving the adjustment of the chip removal capacity in the slot 8.

[0032] Embodiment 3, a gear-slotting fixture, such as Figure 3 and Figure 4 As shown, the difference between it and Example 1 mainly lies in the different structure of the positioning seat 9. In this embodiment, the positioning seat 9 includes a fixed portion 23 and a sliding portion 24. The first inclined surface 10 is arranged on the sliding portion 24. The fixed portion 23 is fixed to the base 1 by screws. The sliding portion 24 is horizontally slidably connected to the top of the fixed portion 23. The sliding portion 24 is slidably adapted to the connecting hole 20, and a first driving source 25 for driving the sliding portion 24 to move horizontally is arranged on the base 1. The first driving source 25 can be a cylinder. In this way, by driving the sliding portion 24 to move, the debris remaining in the connecting hole 20 can be pushed into the chip removal groove 18, thereby avoiding the situation where a large amount of debris remains and accumulates in the connecting hole 20.

[0033] like Figure 3 As shown, baffles 26 are symmetrically arranged on the inner wall of the chip groove 18, and the side of the baffle 26 facing away is hinged on the inner wall of the chip groove 18. The side of the baffle 26 facing each other is embedded with a magnet block 27 that attracts each other. The side of the magnet block 27 facing each other is an arc surface and realizes point contact or line contact to avoid excessive magnetic adsorption. The magnetic attraction of the magnet block 27 keeps the two baffles 26 in a horizontal state. At this time, the baffle 26 has a sealing effect on the chip groove 18, and the debris and impurities falling from the top will be accumulated above the baffle 26. When the accumulated weight reaches a certain value, the baffle 26 will be placed on the baffle 26. After the weight reaches a certain level, it overcomes the suction of the magnet block 27 and causes the baffle 26 to flip down, thereby opening the chip groove 18 and allowing the accumulated chips to fall and be discharged from the chip groove 18. The flipped-down baffle 26 blocks and closes the connecting hole 20, thereby effectively preventing the chips and impurities that fall from the chip groove 18 from entering the connecting hole 20 and accumulating therein. While the chip groove 18 is automatically and regularly discharging chips, it can also effectively prevent chips and impurities from entering the connecting hole 20 during the falling period, thereby realizing the multi-purpose use of the baffle 26.

[0034] like Figure 3As shown, when the baffle 26 is in the position of covering the connecting hole 20, the first driving source 25 drives the sliding part 24 to slide in the connecting hole 20. In the process of the sliding part 24 cleaning the impurities and debris in the connecting hole 20 and pushing them to the chip discharge groove 18, the sliding part 24 simultaneously pushes the baffle 26 to flip so that the baffle 26 is restored to a horizontal state, thereby realizing the flipping and restoration of the baffle 26, which also realizes the multifunctionality of the sliding part 24.

[0035] Embodiment 4, a gear-slotting fixture, such as Figure 5 As shown, the difference between it and Example 3 is that the connection method of the fixing part 23 is different. In this embodiment, the fixing part 23 is vertically slidably connected to the base 1, and a slide groove 28 for the fixing part 23 to slide vertically is provided on the base 1. A second driving source 29 for driving the fixing part 23 to vertically rise and fall is provided on the base 1. The second driving source 29 can also be a cylinder. By driving the positioning seat 9 to rise and fall with the help of the second driving source 29, the height adjustment of the first inclined surface 10 can be achieved, thereby meeting the insertion and positioning use of more workpieces 3 of different specifications and improving the applicability; and a guide groove for vertical sliding with the end of the first driving source 25 is provided on one side of the positioning seat 9, so that the connection between the first driving source 25 and the positioning seat 9 is not affected during the lifting and lowering adjustment of the positioning seat 9, thereby avoiding interference. In this way, in actual use, the positioning seat 9 can also be driven to rise and fall to a state where the sliding part 24 is misaligned with the upper and lower parts of the connecting hole 20, thereby effectively preventing the first driving source 25 from accidentally driving the sliding part 24 to slide, thereby improving the stability of the sliding part 24.

[0036] In addition, an air nozzle 30 is provided on one side of the fixing portion 23 close to the connecting hole 20, and the air nozzle 30 is connected to a high-pressure air source. At the same time, a press switch 31 for controlling the opening of the air nozzle 30 is provided on the lifting and lowering path of the positioning seat 9 corresponding to the inner wall of the slide groove 28. When the second driving source 29 drives the positioning seat 9 to rise until it contacts the press switch 31 to open the air nozzle 30, the position of the air nozzle 30 corresponds to the connecting hole 20. With the help of the air nozzle 30, residual debris and impurities in the connecting hole 20 can be cleaned, and the impurities and debris in the connecting hole 20 can be cleaned in a variety of ways.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gear shaping fixture, characterized in that: The invention comprises a base (1) and a conical seat (2), wherein the central hollow part of the conical seat (2) is provided with a vertical groove (4) for placing a workpiece (3), a positioning seat (9) is provided at the bottom end of the vertical groove (4), the positioning seat (9) has a first inclined surface (10) for abutting against one end of the workpiece (3), a mounting groove (11) is provided on the top inner wall of the conical seat (2), a locking nut (12) is connected to the mounting groove (11) through an internal thread, an expansion sleeve (13) is installed on the locking nut (12), a second inclined surface (14) abutting against each other is provided between the expansion sleeve (13) and the conical seat (2), and a reducing sleeve (15) is provided between the expansion sleeve (13) and the workpiece (3).

2. A gear shaping fixture according to claim 1, characterized in that: The interior of the base (1) is hollow and is provided with a guide seat (6), and the guide seat (6) is provided with a guide column (7) adapted to the inner diameter of the workpiece (3).

3. A gear shaping fixture according to claim 1, characterized in that: The expansion sleeve (13) is rotationally connected to the locking nut (12) and is vertically linked.

4. A gear shaping fixture according to claim 1, characterized in that: The base (1) is detachably connected to a limit seat (16), and the bottom of the cone seat (2) is provided with a limit groove (17) adapted to the limit seat (16).

5. A gear shaping fixture according to claim 2, characterized in that: The center of the guide column (7) is vertically penetrated to form a chip removal groove (18).

6. A gear shaping fixture according to claim 5, characterized in that: The top of the chip removal groove (18) is provided with a conical guide portion (19), and the diameter of the guide portion (19) gradually decreases from top to bottom.

7. A gear shaping fixture according to claim 5, characterized in that: A slot (8) for inserting a workpiece (3) is formed between the guide column (7) and the base (1); a connecting hole (20) is provided on the guide column (7); the connecting hole (20) connects the slot (8) and the chip removal groove (18); and the position of the first inclined surface (10) corresponds to the connecting hole (20).

8. A gear shaping fixture according to claim 2 or 7, characterized in that: The positioning seat (9) is threadedly connected to the base (1) and has an operating groove (22) at the bottom.

9. The gear shaping fixture according to claim 7, characterized in that: The inner wall of the chip groove (18) is symmetrically provided with baffles (26), the back side of the baffles (26) is hinged on the inner wall of the chip groove (18), and the facing ends of the baffles (26) are embedded with magnet blocks (27) that attract each other. The baffles (26) are located above the connecting hole (20), and the baffles (26) are used to cover the connecting hole (20) when they are turned down.

10. A gear shaping fixture according to claim 9, characterized in that: The positioning seat (9) comprises a fixed portion (23) and a sliding portion (24), wherein the sliding portion (24) is horizontally slidably connected to the fixed portion (23), and the sliding portion (24) is slidably adapted to the connecting hole (20). A first driving source (25) for driving the sliding portion (24) to move horizontally is provided on the base (1), and the first inclined surface (10) is provided on the sliding portion (24).

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