Positioning clamp for drilling of end face of rectangular box body of speed reducer

Abstract

The invention discloses a speed reducer rectangular box body end face drilling positioning clamp, and belongs to the technical field of clamps, the speed reducer rectangular box body end face drilling positioning clamp comprises a fixed plate and a movable plate, the fixed plate and the movable plate are slidably connected through a connecting rod, and an adjusting assembly is installed at one end of the movable plate and used for adjusting the distance between the movable plate and the fixed plate; driving assemblies are embedded in the two sides of the moving plate, driven rods are slidably installed at the positions, opposite to the lower sides of the driven gears, of the moving plate, a positioning plate is arranged on the lower side between the two driven rods, a positioning ring is rotationally connected to the end, away from the moving plate, of the positioning plate, and a plurality of extrusion rods are installed outside the positioning ring in a penetrating mode; the equipment can be fixed to a speed reducer box through the arranged adjusting assembly, and the situation that a drill bit drills through the box, and consequently a drilled hole does not meet the standard can be avoided through the rack, the driving gear, the driven gear and the driven rod; and the safety of the box body and the integrity of holes during drilling are ensured by utilizing the characteristic that the sizes of the driving gear and the driven gear are different.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and more specifically, to a positioning jig for drilling on the end face of a rectangular box body of a speed reducer. Background Art

[0002] The design of a positioning jig for drilling on the end face of a rectangular box body of a speed reducer needs to consider multiple factors to ensure the drilling accuracy and the reliability of the jig.

[0003] Among them, the internal holes in the speed reducer box body are for installing screws and supporting and fixing the gear shafts of the gear set in the speed reducer. The holes opened in the speed reducer box body need to ensure the integrity and accuracy of the holes, and avoid the situation where the gear shafts of the gear set in the speed reducer cannot be aligned with the holes or are inclined due to non-standard hole sizes, resulting in the abnormal operation of the speed reducer. Therefore, it is necessary to use a positioning jig to assist in the work during drilling to ensure that the drilled holes meet the standards.

[0004] However, when the traditional positioning jig is used, it can only ensure that the drill bit does not deviate and cause changes in the hole size. Since some of the gear shafts of the gear set in the speed reducer can only be located inside the speed reducer box body, the drilled holes cannot penetrate the box body. And the traditional positioning jig cannot ensure that the drill bit will not drill through the box body when drilling the inner wall of the box body during auxiliary positioning, and the use effect is poor. Therefore, the present invention provides a positioning jig for drilling on the end face of a rectangular box body of a speed reducer. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a positioning jig for drilling on the end face of a rectangular box body of a speed reducer.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A positioning jig for drilling on the end face of a rectangular box body of a speed reducer, comprising a fixed plate and a moving plate. The fixed plate and the moving plate are slidably connected by a connecting rod. One end of the moving plate is provided with an adjusting component for adjusting the distance between the moving plate and the fixed plate; Driving components are embedded on both sides of the moving plate. The driving component includes a driving gear. One end of the driving gear is fixedly installed with a driven gear, and the size of the driven gear is smaller than that of the driving gear. A driven rod is slidably installed at a position below the moving plate relative to the driven gear. A positioning plate is provided below between the two driven rods. One end of the positioning plate away from the moving plate is rotatably connected with a positioning ring. A plurality of pressing rods are installed through the outside of the positioning ring for fixing the drill bit for drilling.

[0008] Further, the adjusting component includes a first threaded rod rotatably connected to the moving plate, and the first threaded rod is threadedly connected to the fixed plate.

[0009] Furthermore, a rack is fixedly installed at one end of the fixed plate close to the moving plate, and the end of the rack penetrates through the moving plate and meshes with the driving gear for transmission.

[0010] Furthermore, a plurality of contraction grooves are formed at the upper end of the driven rod, engaging teeth are slidably installed inside the contraction grooves, the upper ends of the engaging teeth are in an inclined structure, the lower ends of the engaging teeth are elastically connected to the contraction grooves through compression springs, and the driven rod is in meshing transmission with the driven gear through the engaging teeth.

[0011] Furthermore, a second threaded rod penetrates through the upper end of the driven rod, and the lower end of the second threaded rod is located inside the positioning plate and is threadedly connected to the positioning plate.

[0012] Furthermore, the extrusion rod is threadedly connected to the positioning ring, and a limiting block is rotatably connected to the end of the extrusion rod. A limiting groove is formed on the limiting block, and the limiting groove is engaged with the protruding part on the drill bit.

[0013] Furthermore, a sliding groove is formed at the upper end of the driven rod, a corrugated pipe is installed inside the sliding groove, one end of the corrugated pipe far from the positioning plate is fixedly connected to the moving plate, and a pushing block is fixedly installed at one end of the corrugated pipe close to the positioning plate. A plurality of pressure-receiving rods are fixedly installed on the outer wall above the second threaded rod, the pushing block is in extrusion contact with the outer wall of the pressure-receiving rod, and both pushing blocks are located outside the second threaded rod and are symmetrically arranged.

[0014] Furthermore, the inside of the first threaded rod is of a hollow structure, and a threaded groove is formed on the inner wall of the first threaded rod. A guide rod is fixedly installed at a position corresponding to the inside of the first threaded rod on the moving plate. An extrusion block is sleeved outside the guide rod. A ball is embedded at a position corresponding to the outer wall of the extrusion block and the threaded groove. The extrusion block extrudes the inner wall of the threaded groove through the ball.

[0015] Furthermore, a guide groove is formed at one end of the threaded groove close to the moving plate. The guide groove is in an annular structure, and the inner wall of one side of the guide groove close to the threaded groove is inclined. The guide groove is internally communicated with the threaded groove. One end of the corrugated pipe far from the pushing block is communicated with the inside of the first threaded rod through a hose, and the communication position is located at the connection between the first threaded rod and the moving plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By arranging the adjusting assembly, the device can be fixed on the reducer box body, and through the rack, driving gear, driven gear and driven rod, it can be avoided that the drill bit drills through the box body, resulting in the holes drilled not meeting the standards. By utilizing the characteristics of different sizes of the driving gear and the driven gear, the safety of the box body during drilling and the integrity of the holes are ensured.

[0017] (2) In the present invention, the push rod is arranged to be able to push the pressure rods on the two second threaded rods simultaneously during the drilling process, so that the two second threaded rods have rotational tendencies in different directions, thereby keeping the position of the positioning plate stable all the time, and avoiding the loosening of the second threaded rods due to vibration during the drilling process, which may cause the positions of the positioning plate and the positioning ring to change, resulting in the change of the position of the drill bit and affecting the size of the drilled hole.

[0018] (3) In the present invention, the bellows, in cooperation with the flexible hose and the extrusion block, are arranged to enable the first threaded rod to have a rotational tendency during the drilling process, so that the fixing plate is extruded by the threads on the first threaded rod, increasing the pressure between the fixing plate and the moving plate, and avoiding the loosening of the first threaded rod due to vibration, which may lead to the reduction of the pressure between the fixing plate and the moving plate and cause the deviation of the position of the entire device, thereby avoiding the deviation of the position of the drill bit and causing damage to the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the moving plate of the present invention; Figure 3 is a schematic diagram of the partial structure of the driving gear and the driven gear of the present invention; Figure 4 is a schematic diagram of the internal structure of the driven rod of the present invention; Figure 5 is a schematic diagram of the connection structure between the bellows and the moving plate of the present invention; Figure 6 is a schematic diagram of the partial structure of the bellows and the flexible hose of the present invention; Figure 7 is a schematic diagram of the partial structure of the extrusion block and the ball of the present invention; Figure 8 is a schematic diagram of the partial structure of the guide groove and the thread groove of the present invention.

[0020] Explanation of the reference numerals in the drawings: 1. Fixing plate; 101. Connecting rod; 102. Rack; 2. Moving plate; 201. Guide rod; 202. Extrusion block; 203. Ball; 3. Adjusting assembly; 301. First threaded rod; 302. Thread groove; 303. Guide groove; 4. Driving assembly; 401. Driving gear; 402. Driven gear; 403. Driven rod; 404. Shrinkage groove; 405. Engaging teeth; 406. Compression spring; 407. Second threaded rod; 408. Chute; 409. Bellows; 410. Push block; 411. Pressure rod; 412. Flexible hose; 5. Positioning plate; 501. Positioning ring; 502. Extrusion rod; 503. Limiting block; 504. Limiting groove. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 8 , a positioning fixture for drilling on the end face of a rectangular box body of a speed reducer, which includes a fixed plate 1 and a moving plate 2. One end of the fixed plate 1 and the moving plate 2 close to each other can increase the friction between the fixed plate 1, the moving plate 2 and the box body by adding rubber pads or materials of other materials. The fixed plate 1 and the moving plate 2 are slidably connected through a connecting rod 101. One end of the moving plate 2 is provided with an adjusting component 3, and the adjusting component 3 is used to adjust the distance between the moving plate 2 and the fixed plate 1; Driving components 4 are embedded on both sides of the moving plate 2. The driving component 4 includes a driving gear 401. One end of the driving gear 401 is fixedly installed with a driven gear 402. A driven rod 403 is slidably installed at a position of the moving plate 2 relative to the lower side of the driven gear 402. A positioning plate 5 is provided below the two driven rods 403. One end of the positioning plate 5 away from the moving plate 2 is rotatably connected with a positioning ring 501. A plurality of extrusion rods 502 are installed through the outside of the positioning ring 501, and the extrusion rods 502 are used to fix the drill bit for drilling; The adjusting component 3 includes a first threaded rod 301 rotatably connected to the moving plate 2. The first threaded rod 301 is threadedly connected to the fixed plate 1. One end of the fixed plate 1 close to the moving plate 2 is fixedly installed with a rack 102. The end of the rack 102 penetrates through the moving plate 2 and is meshed with the driving gear 401 for transmission; A plurality of contraction grooves 404 are opened at the upper ends of the driven rods 403. Meshing teeth 405 are slidably installed inside the contraction grooves 404. The upper ends of the meshing teeth 405 are in an inclined structure. The lower ends of the meshing teeth 405 are elastically connected to the contraction grooves 404 through compression springs 406, and the driven rods 403 are meshed with the driven gear 402 through the meshing teeth 405 for transmission.

[0023] By adopting the above technical solution, when the device is in use, first place the fixed plate 1 and the moving plate 2 on the side wall of the box body, with the moving plate 2 inside the box body and the fixed plate 1 outside the box body. Then rotate the first threaded rod 301 so that the fixed plate 1 moves relative to the moving plate 2. When the fixed plate 1 moves, it can approach the moving plate 2, thereby reducing the gap between the fixed plate 1 and the moving plate 2, and thus clamping the side wall of the box body. During the process of the fixed plate 1 moving relative to the moving plate 2, the fixed plate 1 can drive the rack 102 to move. When the rack 102 moves, it can move relative to the moving plate 2. At this time, the rack 102 can drive the driving gear 401 to rotate. After the driving gear 401 rotates, it can squeeze the meshing teeth 405, so that the meshing teeth 405 can drive the driven rod 403 to move. When the driven rod 403 moves, it can drive the positioning plate 5 to move.

[0024] A second threaded rod 407 is provided through the upper end of the driven rod 403. The lower end of the second threaded rod 407 is located inside the positioning plate 5 and is threadedly connected to the positioning plate 5. The extrusion rod 502 is threadedly connected to the positioning ring 501, and the end of the extrusion rod 502 is rotatably connected to a limiting block 503. A limiting groove 504 is formed in the limiting block 503, and the limiting groove 504 is engaged with the protruding part on the drill bit.

[0025] By adopting the above technical solution, simultaneously rotating the two second threaded rods 407 can adjust the position of the positioning plate 5, so that the positioning plate 5 moves to the specified drilling position. Among them, since the extrusion rod 502 is threadedly connected to the positioning ring 501, therefore, rotating the extrusion rod 502 can make the extrusion rod 502 move relative to the positioning ring 501. After the extrusion rod 502 moves, it can drive the limiting block 503 to move. After the limiting block 503 moves, the groove can be stuck on the protruding part of the drill bit, so as to fix the drill bit through a plurality of extrusion rods 502.

[0026] A chute 408 is formed in the upper end of the driven rod 403. A corrugated pipe 409 is installed inside the chute 408. One end of the corrugated pipe 409 away from the positioning plate 5 is fixedly connected to the moving plate 2, and a push block 410 is fixedly installed at one end of the corrugated pipe 409 close to the positioning plate 5. A plurality of pressure-receiving rods 411 are fixedly installed on the outer wall above the second threaded rod 407. The push block 410 is in pressing contact with the outer wall of the pressure-receiving rod 411. Both push blocks 410 are located outside the second threaded rod 407 and are symmetrically arranged.

[0027] By adopting the above technical solution, during the drilling process, the movement of the drill bit can drive the movement of the extrusion rod 502. After the extrusion rod 502 moves, it can drive the positioning plate 5 to move through the positioning ring 501. After the positioning plate 5 moves, it can drive the driven rod 403 to move through the second threaded rod 407. During the movement of the driven rod 403, it can drive the extrusion push block 410, so that one end of the corrugated pipe 409 moves through the push block 410. When one end of the corrugated pipe 409 moves, it can contract. At this time, the increase in pressure in the corrugated pipe 409 can cause the push block 410 to squeeze the pressure-receiving rod 411, making the two second threaded rods 407 tend to rotate. And since the two push blocks 410 are both located outside the second threaded rod 407, when the push block 410 pushes the pressure-receiving rod 411, the two second threaded rods 407 rotate in opposite directions, so that the positioning plate 5 is subjected to squeezing forces in different directions, so that the positioning plate 5 can be fixed, preventing the second threaded rod 407 from rotating due to vibration during the drilling process, resulting in the deviation of the position of the positioning plate 5. At the same time, when the driven rod 403 moves under the action of the positioning plate 5, the meshing teeth 405 can squeeze the driven gear 402, making the driven gear 402 tend to rotate. At this time, the rotation tendency of the driven gear 402 can be transmitted to the driving gear 401 fixedly connected thereto, so that the driving gear 401 can squeeze the rack 102, making the rack 102 pull the fixing plate 1, increasing the pressure between the fixing plate 1 and the side wall of the box body, making the clamping force between the fixing plate 1 and the moving plate 2 greater. At the same time, when the driven rod 403 squeezes the meshing teeth 405, since the upper end of the meshing teeth 405 is of an inclined structure and its lower end is elastically connected to the contraction groove 404 through a support spring, when the inclined part on the meshing teeth 405 is blocked by the teeth on the driven gear 402, under the action of the decomposition force of the squeezing force, the meshing teeth 405 can contract into the contraction groove 404, so that they are no longer engaged with the driven gear 402. At this time, the driven rod 403 can move relative to the driven gear 402.

[0028] The first threaded rod 301 has a hollow structure inside, and a threaded groove 302 is provided on the inner wall of the first threaded rod 301. A guide rod 201 is fixedly installed at a position corresponding to the inside of the first threaded rod 301 on the moving plate 2. An extrusion block 202 is sleeved outside the guide rod 201. A ball 203 is embedded at a position corresponding to the outer wall of the extrusion block 202 and the threaded groove 302. The extrusion block 202 squeezes the inner wall of the threaded groove 302 through the ball 203; A guide groove 303 is provided at one end of the threaded groove 302 close to the moving plate 2. The guide groove 303 is of an annular structure, and the inner wall of the guide groove 303 close to the threaded groove 302 is inclined, and the guide groove 303 is internally connected to the threaded groove 302. One end of the corrugated pipe 409 far from the push block 410 is connected to the inside of the first threaded rod 301 through a hose 412, and the connection position is located at the connection between the first threaded rod 301 and the moving plate 2.

[0029] By adopting the above technical solution, before use, after the drill bit is fixed by the extrusion rod 502, the drill bit is kept at a certain distance from the point to be drilled. When starting to push the drill bit, the drill bit will not contact the inner wall of the box first. At this time, the corrugated pipe 409 will contract. After the corrugated pipe 409 is squeezed, part of the air inside it can enter the connection between the first threaded rod 301 and the moving plate 2 through the hose 412, thereby squeezing the extrusion block 202, making it slide on the guide rod 201, so that the ball 203 enters the threaded groove 302 through the inclined part on the guide groove 303. After that, when the drill bit contacts the box, the ball 203 has a tendency to move relative to the first threaded rod 301 along with the extrusion block 202 inside the threaded groove 302, thereby squeezing the inner wall of the threaded groove 302 to make the first threaded rod 301 have a tendency to rotate. In this way, the fixing plate 1 has a tendency to move relative to the moving plate 2, making the extrusion force between the fixing plate 1 and the moving plate 2 greater, making the clamping more stable and avoiding the deviation of the drill bit position.

[0030] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer, comprising a fixing plate (1) and a moving plate (2), characterized in that: The fixed plate (1) and the moving plate (2) are slidably connected by a connecting rod (101). One end of the moving plate (2) is provided with an adjusting component (3), and the adjusting component (3) is used to adjust the distance between the moving plate (2) and the fixed plate (1). Driving components (4) are embedded on both sides of the moving plate (2). The driving component (4) includes a driving gear (401). One end of the driving gear (401) is fixedly installed with a driven gear (402). The size of the driven gear (402) is smaller than that of the driving gear (401). A driven rod (403) is slidably installed at a position on the moving plate (2) relative to the lower side of the driven gear (402). A positioning plate (5) is provided below between the two driven rods (403). One end of the positioning plate (5) away from the moving plate (2) is rotatably connected with a positioning ring (501). A plurality of extrusion rods (502) are installed through the outside of the positioning ring (501), and the extrusion rods (502) are used to fix the drill bit for drilling.

2. The positioning fixture for drilling on the end face of the rectangular box body of a speed reducer according to claim 1, wherein: The adjusting component (3) includes a first threaded rod (301) rotatably connected to the moving plate (2), and the first threaded rod (301) is threadedly connected to the fixed plate (1).

3. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 2, characterized in that: A rack (102) is fixedly installed at one end of the fixed plate (1) close to the moving plate (2). The end of the rack (102) penetrates through the moving plate (2) and is meshed with the driving gear (401) for transmission.

4. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 3, characterized in that: A plurality of contraction grooves (404) are opened at the upper end of the driven rod (403). A meshing tooth (405) is slidably installed inside the contraction groove (404). The upper end of the meshing tooth (405) is in an inclined structure. The lower end of the meshing tooth (405) is elastically connected to the contraction groove (404) through a compression spring (406), and the driven rod (403) is meshed with the driven gear (402) through the meshing tooth (405) for transmission.

5. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 4, characterized in that: A second threaded rod (407) penetrates through the upper end of the driven rod (403). The lower end of the second threaded rod (407) is located inside the positioning plate (5) and is threadedly connected to the positioning plate (5).

6. The positioning fixture for drilling on the end face of the rectangular box body of a speed reducer according to claim 5, characterized in that: The extrusion rod (502) is threadedly connected to the positioning ring (501), and a limiting block (503) is rotatably connected to the end of the extrusion rod (502). A limiting groove (504) is opened on the limiting block (503), and the limiting groove (504) is engaged with the protruding part on the drill bit.

7. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 6, characterized in that: A sliding groove (408) is opened at the upper end of the driven rod (403). A corrugated pipe (409) is installed inside the sliding groove (408). One end of the corrugated pipe (409) away from the positioning plate (5) is fixedly connected to the moving plate (2). One end of the corrugated pipe (409) close to the positioning plate (5) is fixedly installed with a pushing block (410). A plurality of pressure-receiving rods (411) are fixedly installed on the outer wall of the upper side of the second threaded rod (407). The pushing block (410) is in extrusion contact with the outer wall of the pressure-receiving rod (411). Both pushing blocks (410) are located outside the second threaded rod (407) and are symmetrically arranged.

8. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 7, characterized in that: The interior of the first threaded rod (301) is a hollow structure, and a threaded groove (302) is provided on the inner wall of the first threaded rod (301). A guide rod (201) is fixedly installed at a position corresponding to the interior of the first threaded rod (301) on the moving plate (2). An extrusion block (202) is sleeved outside the guide rod (201). A ball (203) is embedded at a position on the outer wall of the extrusion block (202) corresponding to the threaded groove (302). The extrusion block (202) presses against the inner wall of the threaded groove (302) through the ball (203).

9. A positioning fixture for drilling on the end face of a rectangular box body of a speed reducer according to claim 8, characterized in that: A guide groove (303) is provided at one end of the threaded groove (302) close to the moving plate (2). The guide groove (303) is in an annular structure. The inner wall of the guide groove (303) on the side close to the threaded groove (302) is inclined, and the guide groove (303) is internally connected to the threaded groove (302). One end of the bellows (409) far from the push block (410) is connected to the interior of the first threaded rod (301) through a hose (412), and the connection point is located at the connection between the first threaded rod (301) and the moving plate (2).

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