Gear grinding tool clamp

Abstract

The utility model discloses a gear grinding work fixture which comprises a main support used for containing a gear and a fixing assembly arranged on the main support and used for fixing the gear, the bottom of the main support is fixedly connected with a base, and a first limiting portion and a second limiting portion used for limiting rotation of the gear are arranged on the two sides of the main support. An opposite moving mechanism is arranged between the base and the main support, the first limiting part and the second limiting part are both connected with the opposite moving mechanism, and the opposite moving mechanism is used for adjusting the distance between the first limiting part and the second limiting part. In the gear machining process, the gear is fixed through the fixing assembly, meanwhile, the rotation freedom degree of the gear can be limited by additionally arranging the first limiting part and the second limiting part, the positioning effect is further enhanced, and the gear positioning device is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a gear grinding tooling fixture. Background Art

[0002] The gear grinding fixture is a device for assisting the clamping and positioning of the gear during the gear grinding process. After searching, the Chinese patent application number CN202023263920.2 discloses a shockproof gear grinding fixture, including a main bracket, a locking nut, a cover plate, a ball plunger, a top cover and a spring. The main bracket includes a bottom platform, a positioning shaft and a screw that are fixedly connected from bottom to top in sequence. The upper half of the positioning shaft is a truncated cone, and the lower half of the positioning shaft is a cylinder, and the diameter of the cylindrical part is greater than the bottom diameter of the truncated cone part. The spring is sleeved on the cylindrical part of the positioning shaft. The main bracket passes through the top cover and the cover plate from bottom to top in sequence. The top cover and the cover plate are both located on the truncated cone part of the positioning shaft. The screw on the main bracket is threadedly connected with the locking nut. The lower end of the spring is located on the bottom platform, and the upper end of the spring abuts against the lower surface of the top cover. Ball plungers are evenly spaced circumferentially on the top cover, and the locking nut is located on the cover plate. When used, it effectively solves the vibration during gear processing and improves grinding vibration marks.

[0003] Although the above-mentioned existing technical solution can be applied to the auxiliary clamping and positioning of gears, the frustum part of the positioning shaft has limited rotation limit on the gears. Especially during high-speed or high-load processing, the limitation on the rotational freedom of the gears is not stable enough, and the gears may produce slight shaking, affecting the processing accuracy of the gears. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a gear grinding fixture which can limit the degree of freedom of gear rotation during gear machining.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: to provide a gear grinding tooling fixture, including a main bracket for placing gears and a fixing component arranged on the main bracket for fixing the gears, the bottom of the main bracket is fixedly connected with a base, and the two sides of the main bracket are provided with a first limit part and a second limit part for limiting the rotation of the gears, a shift mechanism is arranged between the base and the main bracket, the first limit part and the second limit part are both connected to the shift mechanism, and the shift mechanism is used to adjust the distance between the first limit part and the second limit part.

[0006] Further, the displacement mechanism includes a transmission frame, a first slide bar, a second slide bar, a first transmission rod, and a second transmission rod. The transmission frame is rotatably connected to the bottom of the main bracket. The first slide bar and the second slide bar are slidably connected to the top of the base at intervals. The first limiting portion and the second limiting portion are respectively connected to the first slide bar and the second slide bar. The first transmission rod and the second transmission rod are respectively fixedly connected to the first slide bar and the second slide bar. First transmission grooves and second transmission grooves are symmetrically arranged on the transmission frame, and the first transmission rod and the second transmission rod are respectively slidably connected in the first transmission groove and the second transmission groove.

[0007] Further, an installation groove is provided at the bottom of the main bracket, and the transmission frame is rotatably installed in the installation groove. Two sliding grooves are arranged at intervals on the top of the base, and the first slide bar and the second slide bar are respectively slidably connected in the two sliding grooves.

[0008] Further, a transfer frame is slidably connected in each of the first transmission groove and the second transmission groove, and the two transfer frames are respectively rotatably sleeved outside the first transmission rod and the second transmission rod.

[0009] Further, the first limiting portion includes a first limiting strip and a first mounting plate, and the first mounting plate is fixedly connected to the bottom of the first limiting strip; the second limiting portion includes a second limiting strip, a second mounting plate, and a connecting frame. The second mounting plate is fixedly connected to the bottom of the second limiting strip. The second mounting plate and the connecting frame are rotatably connected through a connecting shaft. The first mounting plate and the connecting frame are respectively fixedly connected to the ends of the first slide bar and the second slide bar that are away from each other.

[0010] Further, a plugging groove for inserting the second mounting plate is provided on the connecting frame. A connecting hole is opened on the second mounting plate. The connecting shaft passes through the connecting hole and the connecting shaft is fixedly connected to both sides of the plugging groove. A limiting groove is opened at the bottom of the plugging groove, and a limiting block is arranged at the bottom of the second mounting plate. The limiting block cooperates with the limiting groove to limit the rotation of the second mounting plate.

[0011] Further, a threaded rod is passed through the first mounting plate. A threaded hole for the threaded rod to pass through is provided on the side of the base facing the first mounting plate, and the threaded rod is threadedly connected to the threaded hole.

[0012] Further, a driving cap for driving the threaded rod to rotate is fixedly connected to the end of the threaded rod away from the base, and the driving cap is located on the side of the first mounting plate away from the base.

[0013] Further, a plurality of long slots are opened on the driving cap.

[0014] Furthermore, a plurality of fixing holes are formed in the base, a plurality of side notches are formed in the main bracket, a plurality of through holes are formed at the bottom end of the main bracket, the plurality of through holes are respectively communicated with the plurality of side notches, and a plurality of assembly bolts are arranged in the plurality of through holes, and the plurality of assembly bolts are respectively threadedly connected with the plurality of fixing holes.

[0015] For a gear grinding fixture of the present utility model, during the gear grinding process, first place the gear on the main bracket, and form the clamping and positioning of the gear through the fixing component. Then rotate the driving cap, and realize the adjustment of the relative position of the first mounting plate relative to the base through the threaded connection between the threaded rod and the base, and then realize the adjustment of the first limiting strip relative to the gear. Due to the provision of the displacement structure, the two support mounting strips will move synchronously. Therefore, the moving first mounting plate will realize the synchronous relative movement of the connecting frame. Since the second mounting plate and the connecting frame are connected to each other through the connecting shaft, the second mounting plate and the connecting frame will move synchronously. Therefore, the first limiting strip and the second limiting strip can form synchronous relative displacement relative to the side surface of the gear, and then achieve the relative pressing and positioning of the side surface of the gear, so as to limit the rotational freedom of the gear and prevent the gear from shaking during the processing, ensuring the processing accuracy of the gear. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 is a schematic diagram of the structures of the main bracket and the base in an embodiment of the present utility model.

[0018] Figure 3 is a schematic diagram of the bottom structure of the main bracket in an embodiment of the present utility model.

[0019] Figure 4 is a schematic diagram of the connection structure of the second limiting part in an embodiment of the present utility model.

[0020] Figure 5 is a partial sectional view after the second mounting plate rotates relative to the connecting frame in an embodiment of the present utility model.

[0021] The meanings of the reference numerals in the drawings are as follows: gear 1; main bracket 2; mounting groove 21; side notch 22; through hole 23; fixing assembly 3; spring 31; cover plate 32; top cover 33; locking nut 34; base 4; sliding groove 41; threaded hole 42; fixing hole 43; first limiting portion 5; first limiting strip 51; first mounting plate 52; second limiting portion 6; second limiting strip 61; second mounting plate 62; connecting hole 621; connecting frame 63; inserting groove 631; limiting groove 6311; connecting shaft 64; displacement mechanism 7; transmission frame 71; first transmission groove 711; second transmission groove 712; first sliding strip 72; second sliding strip 73; first transmission rod 74; second transmission rod 75; transfer frame 8; threaded rod 9; driving cap 91; long slot 911. Specific Embodiment

[0022] The following is a further detailed description through specific embodiments:

[0023] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the present utility model provides a gear grinding tooling fixture, including a main bracket 2 for placing the gear 1 and a fixing assembly 3 provided on the main bracket 2 for fixing the gear 1. The bottom of the main bracket 2 is fixedly connected to a base 4. First limiting portion 5 and second limiting portion 6 for restricting the rotation of the gear 1 are provided on both sides of the main bracket 2. A displacement mechanism 7 is provided between the base 3 and the main bracket 2. Both the first limiting portion 5 and the second limiting portion 6 are connected to the displacement mechanism 7. The displacement mechanism 7 is used to adjust the distance between the first limiting portion 5 and the second limiting portion 6. During the gear processing of the present utility model, the rotational freedom of the gear can be limited by the first limiting portion 5 and the second limiting portion 6, and the positioning effect is further enhanced, preventing the gear from shaking during the processing.

[0024] During use, first install and fix the base 4, and then fix the main bracket 2 to the base 4. Specifically, a plurality of fixing holes 43 are provided on the base 4, a plurality of side notches 22 are provided on the main bracket 2, and a plurality of through holes 23 are provided at the bottom end of the main bracket 2. The plurality of through holes 23 communicate with the plurality of side notches 22 respectively. A plurality of assembly bolts 24 are arranged in the plurality of through holes 23, and the plurality of assembly bolts 24 are respectively threadedly connected with the plurality of fixing holes 43. Through this design, it is convenient for operators to install and disassemble. Just insert the assembly bolts into the through holes 23 and the fixing holes 43 through the side notches 22 and then lock them. When disassembling, just disassemble the assembly bolts 24. After the main bracket 2 is installed and fixed to the base 4, the gear 1 is fixed to the main bracket 2 through the fixing component 3. Specifically, the fixing component includes a spring 31, a cover plate 32, a top cover 33 and a lock nut 34. After the spring 31 is sleeved on the main bracket 2, the cover plate 32 is sleeved on the main bracket. Then the gear 1 is passed through the main bracket 2 and located on top of the cover plate 32. At this time, the top cover 33 is passed through the main bracket 2 to cover the gear 1. Finally, the lock nut 34 is threadedly connected to the main bracket 2 to lock the top cover 33. After the gear is fixed, the first limiting portion 5 and the second limiting portion 6 are adjusted by the displacement mechanism to abut on both sides of the gear 1.

[0025] An installation groove 21 for installing the displacement mechanism 7 and two sliding grooves 41 are respectively provided on the bottom surface of the main bracket 2 and the top surface of the base. In this embodiment, the displacement mechanism 7 includes a transmission frame 71, a first slide bar 72, a second slide bar 73, a first transmission rod 74 and a second transmission rod 75. The transmission frame 71 is rotatably connected to the installation groove 21 at the bottom of the main bracket 2, and the first slide bar 72 and the second slide bar 73 are slidably connected to the two sliding grooves 41 at the top of the base 4 at intervals. At the same time, the first limiting part 5 and the second limiting part 6 are respectively connected to the first slide bar 72 and the second slide bar 73. The first transmission rod 74 and the second transmission rod 75 are respectively fixedly connected to the first slide bar 72 and the second slide bar 73. A first transmission groove 711 and a second transmission groove 712 are symmetrically arranged on the transmission frame 71, and the first transmission rod 74 and the second transmission rod 75 are respectively slidably connected to the first transmission groove 711 and the second transmission groove 712. Specifically, the transmission frame 71 is a strip-shaped rod, the center of the transmission part 71 is rotatably connected to the bottom surface of the installation groove 21, and at the same time, the first transmission groove 711 and the second transmission groove 712 are arranged on both sides of the center of the transmission part 71. The first transmission rod 74 and the second transmission rod 75 are respectively fixedly connected to the top surfaces of the first slide bar 72 and the second slide bar 73. In the initial state, the first transmission rod 74 and the second transmission rod 75 are respectively located in the first transmission groove 711 and the second transmission groove 712. When the first slide bar 72 or the second slide bar 73 moves, it will drive the corresponding first transmission rod 74 or the second transmission rod 75 to move. When the first transmission rod 74 or the second transmission rod moves, the first transmission rod 74 and the second transmission rod 75 are respectively located in the first transmission groove 711 and the second transmission groove 712, so the first transmission rod 74 or the second transmission rod 75 will cause the transmission frame 71 to rotate. Since the rotation directions of the first transmission rod 74 and the second transmission rod 75 are the same, and the first slide bar 72 and the second slide bar 73 are located on both sides of the base 4, the first slide bar 72 and the second slide bar will move relative to each other. Specifically, when the first slide bar 72 moves towards the direction close to the main bracket 2, the second slide bar 73 will also move towards the direction close to the main bracket 2; when the first slide bar 72 moves towards the direction away from the main bracket 2, the second slide bar will also move towards the direction away from the main bracket 2.

[0026] In order to make the sliding of the first transmission rod 74 and the second transmission rod 75 in the first transmission groove 711 and the second transmission groove 712 smoother, a transfer frame 8 is rotatably connected in both the first transmission groove 711 and the second transmission groove 712, and the two transfer frames 8 are respectively rotatably sleeved outside the first transmission rod 74 and the second transmission rod 75. Through the transfer frame 8, the relative transmission between the first transmission rod 74 and the second transmission rod 75 and the first transmission groove 711 and the second transmission groove 712 can be realized, so that the first transmission rod 74 and the second transmission rod 75 do not directly contact the first transmission groove 711 and the second transmission groove 712. Thereby, the frictional force between the first transmission rod 74 and the second transmission rod 75 and the first transmission groove 711 and the second transmission groove 712 can be reduced, avoiding jamming and making the transmission more convenient.

[0027] The first limiting part 5 includes a first limiting strip 51 and a first mounting plate 52, and the first mounting plate 52 is fixedly connected to the bottom of the first limiting strip 51. The second limiting part 6 includes a second limiting strip 61, a second mounting plate 62 and a connecting frame 63. The second mounting plate 62 is fixedly connected to the bottom of the second limiting strip 61. The second mounting plate 62 and the connecting frame 63 are rotatably connected through a connecting shaft 64. The first mounting plate 52 and the connecting frame 63 are respectively fixedly connected to the opposite ends of the first sliding strip 72 and the second sliding strip 73. In order to control the relative movement of the first limiting part 5 and the second limiting part 6, a threaded rod 9 is inserted through the first mounting plate 52. A threaded hole 42 for the threaded rod 9 to pass through is provided on the side of the base 4 facing the first mounting plate 52, and the threaded rod 9 is threadedly connected to the threaded hole 42. One end of the threaded rod 9 away from the base 4 is fixedly connected with a driving cap 91 for driving the threaded rod 9 to rotate. The driving cap 91 is located on the side of the first mounting plate 52 away from the base 4. In this embodiment, the driving cap 91 is located outside the first mounting plate 52. A plurality of long slots 911 are formed in the driving cap 91. During use, by inserting an external rod-shaped object into the long slots 911, the driving cap 91 can be rotated using the lever principle, which is more convenient for the operator to drive and more labor-saving. When it is necessary to move the first limiting strip 51 and the second limiting strip 61 away from the main bracket 2, at this time, the threaded rod 9 is rotated through the driving cap 91 to move it away from the base 4 while pulling the first mounting plate 52. At this time, since the first sliding strip 72 will move away from the main bracket 2, the second sliding strip will also move away from the main bracket 2, so that the second limiting strip 61 will also move away from the main bracket 2. When it is necessary to move the first limiting strip 51 and the second limiting strip 61 towards the main bracket 2, at this time, only the threaded rod 9 needs to be rotated towards the direction close to the base 4. Since the driving cap 91 is located outside the first mounting plate 52, the first mounting plate 52 will be driven to move towards the main bracket 2. Similarly, the second limiting strip 61 will also move towards the main bracket 2, so as to clamp the gear on the main bracket 2 to form a side limit. At the same time, since the first limiting strip 51 and the second limiting strip 61 can be adjusted, gears of different sizes can be used conveniently.

[0028] Please continue to refer to Figure 4 and Figure 5, when there are no ground tooth marks on the outer periphery of the gear 1, the above-mentioned clamping method can be adopted. After one tooth mark is ground on the side of the gear, at this time, the first limiting strip 51 or the second limiting strip 61 is inserted into the tooth mark. By inserting the first limiting strip 51 and the second limiting strip 61 into the tooth mark, the rotational freedom of the gear can be restricted. Since the first limiting strip 51 and the second limiting strip 61 move relatively and have the same movement distance, when the first limiting strip 51 or the second limiting strip 61 is not inserted into the tooth mark, it will prevent the first limiting strip 51 and the second limiting strip 61 from being inserted into the tooth mark. At this time, only one side of the first limiting part 5 or the second limiting part 6 needs to be limited. The specific solution given in this embodiment is that a plugging slot 631 for inserting the second mounting plate 62 is provided on the connecting frame 63. A connecting hole 621 is opened on the second mounting plate 62. A connecting shaft 64 is passed through the connecting hole 621 and the connecting shaft 64 is fixedly connected to both sides of the plugging slot 631. A limiting slot 6311 is opened at the bottom of the plugging slot 631. A limiting block 622 is provided at the bottom of the second mounting plate 62. The limiting block 622 cooperates with the limiting slot 6311 to restrict the rotation of the second mounting plate 62. During normal use, only by plugging the limiting block 622 into the limiting slot 6311 can the second mounting plate 62 be in a vertical state. If there is one tooth mark on the gear 1 and adjustment is needed, the second mounting plate 62 is lifted upward to make the limiting block 622 withdraw from the limiting slot 6311. At this time, rotate the second mounting plate 62 to cancel the limitation on the gear 1. After the second mounting plate 62 is adjusted, rotate the adjusting gear to make the ground tooth mark correspond to the first limiting strip 51, and then rotate the threaded rod 9 again to make the first limiting strip 51 approach the tooth mark on the gear 1 until the first limiting strip 51 is inserted into the tooth mark and forms relative pressing and positioning with the inserted tooth mark, then the pressing of the gear can be completed. Since the second limiting strip 61 has rotated out of the clamping station acting on the gear 1, the second limiting strip 61 will not form clamping relative to the gear 1. After that, continue to complete the processing operations of other tooth marks on the gear 1. During the processing of the gear 1, when there are no tooth marks on the gear 1, the first limiting strip 51 and the second limiting strip 61 are used to form a relative two-point clamping method to improve the clamping effect. When there are tooth marks on the gear 1 but the first limiting strip 51 and the second limiting strip 61 cannot be clamped simultaneously, the first limiting strip 51 is used to form a side-insertion type positioning method, and the limitation of the rotational freedom is still good. When there are tooth marks for the first limiting strip 51 and the second limiting strip 61 to be clamped simultaneously, the second limiting strip 61 can be adjusted to a vertical state, which has stronger applicability.

[0029] The above are only the embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the present invention.

Claims

1. A gear grinding fixture, comprising a main bracket for placing a gear and a fixing assembly arranged on the main bracket for fixing the gear, characterized in that: The bottom of the main bracket is fixedly connected to a base, and the first limit part and the second limit part for limiting the rotation of the gear are arranged on both sides of the main bracket. A shifting mechanism is arranged between the base and the main bracket, and the first limit part and the second limit part are both connected to the shifting mechanism, and the shifting mechanism is used to adjust the distance between the first limit part and the second limit part.

2. A gear grinding fixture according to claim 1, characterized in that: The counter-shift mechanism includes a transmission frame, a first slide bar, a second slide bar, a first transmission rod and a second transmission rod. The transmission frame is rotatably connected to the bottom of the main bracket, the first slide bar and the second slide bar are slidably connected to the top of the base at intervals, the first limiting portion and the second limiting portion are respectively connected to the first slide bar and the second slide bar, the first transmission rod and the second transmission rod are respectively fixedly connected to the first slide bar and the second slide bar, the transmission frame is symmetrically provided with a first transmission groove and a second transmission groove, the first transmission rod and the second transmission rod are respectively slidably connected to the first transmission groove and the second transmission groove.

3. A gear grinding fixture according to claim 2, characterized in that: The bottom of the main bracket is provided with a mounting groove, the transmission frame is rotatably installed in the mounting groove, and two slide grooves are spaced apart at the top of the base, and the first slide bar and the second slide bar are slidably connected to the two slide grooves respectively.

4. A gear grinding fixture according to claim 2, characterized in that: The first transmission groove and the second transmission groove are both slidably connected with intermediate transfer frames, and the two intermediate transfer frames are rotatably sleeved outside the first transmission rod and the second transmission rod respectively.

5. The gear grinding fixture according to claim 2, characterized in that: The first limiting portion includes a first limiting bar and a first mounting plate, and the first mounting plate is fixedly connected to the bottom of the first limiting bar; the second limiting portion includes a second limiting bar, a second mounting plate and a connecting frame, the second mounting plate is fixedly connected to the bottom of the second limiting bar, the second mounting plate and the connecting frame are rotatably connected via a connecting shaft, and the first mounting plate and the connecting frame are respectively fixedly connected to one end of the first sliding bar and the second sliding bar that are away from each other.

6. A gear grinding fixture according to claim 5, characterized in that: The connecting frame is provided with a plug-in slot for inserting the second mounting plate, the second mounting plate is provided with a connecting hole, the connecting shaft is passed through the connecting hole and the connecting shaft is fixedly connected to both sides of the plug-in slot, a limiting slot is provided at the bottom of the plug-in slot, a limiting block is provided at the bottom of the second mounting plate, and the limiting block cooperates with the limiting slot to limit the rotation of the second mounting plate.

7. The gear grinding fixture according to claim 5, characterized in that: A threaded rod is passed through the first mounting plate, and a threaded hole for the threaded rod to pass through is provided on a side of the base facing the first mounting plate, and the threaded rod is threadedly connected to the threaded hole.

8. The gear grinding fixture according to claim 7, characterized in that: One end of the threaded rod away from the base is fixedly connected with a driving cap for driving the threaded rod to rotate, and the driving cap is located on a side of the first mounting plate away from the base.

9. A gear grinding fixture according to claim 8, characterized in that: The driving cap is provided with a plurality of long strip openings.

10. The gear grinding fixture according to claim 1, characterized in that: The base is provided with a plurality of fixing holes, the main bracket is provided with a plurality of side notches, and the bottom end of the main bracket is provided with a plurality of through holes, the plurality of through holes are respectively connected with the plurality of side notches, and the plurality of through holes are each provided with assembly bolts, and the plurality of assembly bolts are respectively threadedly connected with the plurality of fixing holes.

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