A device for verifying the outer diameter fit of an open bushing after tightening.

Abstract

This utility model discloses a device for verifying the outer diameter adaptation of an open bushing after tightening, belonging to the field of bushing verification technology. It aims to solve the problems of complex operation and low efficiency in existing verification methods. The device includes a support platform, a pre-tightening part, and a verification part. The support platform supports the verification part and the pre-tightening part, ensuring that the center positions of each component and the open bushing to be verified correspond. The pre-tightening part fixes and pre-tightens the open bushing before verification, tightening it and fitting it into a verification sleeve for verification. After verification, the open bushing is removed from the verification sleeve using a removal block. This utility model verifies the adaptability of the open bushing by pre-tightening and precise positioning. It is simple to operate, provides intuitive feedback, is convenient to remove and place, avoids damage to the bushing, and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bushing verification technology, and in particular to a device for verifying the outer diameter adaptation of an open bushing after it is tightened. Background Technology

[0002] During production, processing, and assembly, open bushings need to undergo shrinkage verification to ensure their tightness after assembly. The accuracy of their outer diameter after shrinkage directly determines the fit clearance with the assembled parts, which in turn affects the stability of equipment operation, smoothness of movement, and product interchangeability. Therefore, it is necessary to verify that the dimensions of the open bushing meet the design and assembly requirements.

[0003] Currently, the verification of the outer diameter of the open bushing after tightening mainly relies on two methods: one is manual verification using handheld measuring tools, commonly using contact measuring tools such as vernier calipers and micrometers, by manually positioning and tightening the workpiece to read the value; the other is verification by direct assembly, where the open bushing is installed into the workpiece for measurement.

[0004] Existing open bushing verification methods have the following shortcomings:

[0005] 1. When measuring manually, the tightening and calibration of the open bushing must be done manually, which is complicated. The measurement is done using measuring tools such as dial indicators, and the feedback is not obvious. Moreover, there are many sources of error, which can easily lead to inaccurate measurement results.

[0006] 2. Directly fitting the open shaft into the workpiece for verification and measurement is inconvenient and difficult to remove after verification and measurement, which affects work efficiency. Utility Model Content

[0007] To overcome the above deficiencies, this utility model provides a device for verifying the outer diameter adaptation of an open bushing after tightening, including a support platform, a pre-tightening part, and a verification part.

[0008] Furthermore: the verification part includes a verification sleeve, the inner diameter of the head of the verification sleeve being the outer diameter required to fit the open bushing, and the support platform including a lifting support mechanism and a platform body;

[0009] Furthermore, it also includes a pre-tightening part, which includes a clamping seat, a tightening gear, and a sliding block. The clamping seat is fixed to the upper surface of the support platform, the tightening gear is rotatably connected to the clamping seat, the tightening gear has a sliding groove, and the bottom of the sliding block is provided with a sliding post. The sliding block is slidably connected to the tightening gear through the sliding post and the sliding groove.

[0010] Furthermore: the inner diameter of the tail end of the verification sleeve is larger than the inner diameter of the head end of the verification sleeve. The verification part also includes a take-out block. A limiting protrusion is provided on the outer arc surface of the take-out block. The take-out block is slidably connected to the inner arc surface of the tail end of the verification sleeve through the limiting protrusion. The verification part also includes a retaining ring. The inner diameter of the retaining ring is equal to the inner diameter of the head end of the verification sleeve. The retaining ring is fixedly connected to the tail end face of the verification sleeve.

[0011] Furthermore, the pre-tightening section also includes a main shaft and a drive gear. The main shaft is rotatably connected to the platform body via bearings, and the drive gear is mounted on the main shaft via a key connection. The drive gear meshes with the tightening gear for transmission.

[0012] Furthermore: the center of the tightening gear has a mounting hole, and multiple sliding grooves are evenly distributed along an arc array on the tightening gear, with the two ends of the sliding grooves being at different distances from the center of the tightening gear.

[0013] Furthermore: the clamping seat is provided with a convex shaft and a mounting platform, and the tightening gear is rotatably connected to the clamping seat through the convex shaft and the mounting hole.

[0014] Furthermore, the pre-tightening part also includes a guide cover, on which multiple guide grooves are distributed in an arc array, and the guide cover is fixedly connected to the clamping seat through a mounting platform.

[0015] Furthermore: the guide groove is opened radially, and guide bosses are provided on both sides of the guide groove.

[0016] Furthermore: the sliding block is provided with a guide rail on its side, and the sliding block is slidably connected to the guide cover through the guide rail and the guide boss. The contact surface between the sliding block and the open bushing is arc-shaped, and a buffer pad is provided on the end face of the sliding block that contacts the open bushing.

[0017] Furthermore: the lifting support mechanism includes a V-shaped support block, a lead screw, and a lifting block. The upper side of the cross-section of the V-shaped support block is V-shaped, and the two inclined surfaces on the upper side of the V-shaped support block are tangent to the outer arc surface of the calibration sleeve. The lead screw is rotatably connected to the platform body through a bearing. The lifting block is threadedly connected to the lead screw and fixedly connected to the V-shaped support block.

[0018] Furthermore: the bottom of the V-shaped support block is provided with a support leg, and a support block guide platform is provided on the side of the support leg. The V-shaped support block is slidably connected to the platform body through the support block guide platform, and the lifting block is fixedly connected to the V-shaped support block through the support leg.

[0019] This utility model has the following beneficial effects:

[0020] 1. The center position of the open bearing is defined by the pre-tightening part, and the center position of the verification sleeve is defined by the V-shaped support block. When the two positions are opposite, the open bearing sleeve is put into the verification sleeve to complete the verification. It is simple and easy to operate, and the feedback is intuitive.

[0021] 2. After the calibration is completed, the open bushing is easy to remove. By setting a removal block inside the calibration sleeve, which is pushed by a pushing device, the open bushing is pushed out of the calibration sleeve by the removal block after the calibration and measurement are completed. It is simple to operate and improves work efficiency.

[0022] 3. A buffer pad is provided at the contact position between the sliding block and the open bushing in the pre-tightening section. This provides anti-slip and buffering functions, preventing slippage when the open bushing is clamped in the pre-tightening section. It also buffers the open bushing, preventing it from being squeezed and deformed. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 3 for Figure 2 Enlarged view of section A;

[0026] Figure 4 for Figure 2 Enlarged view of section B;

[0027] Figure 5 for Figure 2 Enlarged view of section C;

[0028] Figure 6 Exploded view of the verification section;

[0029] Figure 7 This is a schematic diagram of the V-shaped support block.

[0030] Figure 8 This is an exploded view of the pre-tightening section.

[0031] Figure 9 This is a schematic diagram of the clamping seat.

[0032] Figure 10 The front view of the tightening gear;

[0033] Figure 11 This is a schematic diagram of the sliding block structure;

[0034] Figure 12 This is a schematic diagram of the guide cover structure;

[0035] Figure 13 for Figure 12 Enlarged view of section D;

[0036] Figure 14 A schematic diagram showing the working state of the pre-tightened portion of the tightened open bushing;

[0037] Figure 15 A schematic diagram illustrating the working state of the sleeve fitted into the open bushing;

[0038] Figure 16 A schematic diagram illustrating the working state of the sleeve with the open bushing leaving the pre-tightening section for verification purposes;

[0039] Figure 17 A schematic diagram of the working state in which the open bushing is pushed out of the calibration sleeve to remove the block.

[0040] Legend:

[0041] 1. Support platform; 11. Platform body; 12. V-shaped support block; 121. Support leg; 122. Support block guide platform; 123. Lifting block; 13. Main shaft; 14. Drive gear; 15. Lead screw; 2. Pre-tightening section; 21. Clamping seat; 211. Protruding shaft; 212. Mounting platform; 22. Tightening gear; 221. Sliding groove; 222. Mounting hole; 23. Guide cover; 231. Guide groove; 232. Guide boss; 24. Sliding block; 241. Buffer pad; 242. Sliding column; 243. Guide rail; 3. Verification section; 31. Verification sleeve; 311. Handle; 32. Removal block; 321. Grip; 322. Limiting protrusion ring; 33. Snap ring; 41. Motor one; 42. Motor two; 6. End cover. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Reference Figure 1-17 The present invention provides a device for calibrating the outer diameter of an open bushing after tightening, comprising a support platform 1, a pre-tightening part 2, and a calibration part 3.

[0044] The support platform 1 includes a platform body 11 and a lifting support mechanism. The lifting support mechanism includes a V-shaped support block 12, a lead screw 15, and a second motor 42. The lead screw 15 is vertically installed inside the platform body 11. The diameter of the hole in the platform body 11 is larger than the diameter of the lead screw 15 to facilitate its installation. The lead screw 15 is rotatably connected to the platform body 11 via a bearing. The outer ring of the bearing is limited by an end cap 6, and the inner ring of the bearing is limited by a step on the lead screw 15. The tail of the lead screw 15 is connected to the second motor 42 via a coupling. The second motor 42 is fixed to the platform body 11. A lifting block 123 is threadedly connected to the threaded portion of the lead screw 15. The upper part of the cross section of the support block 12 is V-shaped. The bottom of the V-shaped support block 12 is provided with two support legs 121. The support block guide platform 122 is provided on the side of the support leg 121. The platform body 11 is provided with corresponding slots. The V-shaped support block 12 is slidably connected to the platform body 11 through the support block guide platform 122. The bottom of the support leg 121 is fixed to the lifting block 123 by bolts. The motor 42 drives the lead screw 15 to rotate. The support block guide platform 122 limits the movement direction of the lifting block 123. As the lead screw 15 rotates, the lifting block 123 moves in a straight line along the lead screw 15, further realizing the lifting of the V-shaped support block 12.

[0045] The pre-tensioning section 2 includes a main shaft 13, a drive gear 14, a motor 41, a clamping seat 21, a tightening gear 22, a guide cover 23, and a sliding block 24. The main shaft 13 is horizontally installed inside the platform 11. The diameter of the hole in the platform 11 is larger than the diameter of the main shaft 13 to facilitate its installation. The main shaft 13 is rotatably connected to the platform 11 via bearings. The outer ring of the bearing is limited by an end cover 6, and the inner ring is limited by a step and a bushing on the main shaft 13. The drive gear 14 is mounted on the main shaft 13 via a key connection. One end of the main shaft 13 is connected to the motor 41 via a coupling. The drive gear 14 and the tightening gear 22... The clamping seat 21 has a "D"-shaped main viewing surface. The planar side of the clamping seat 21 is fixed to the upper surface of the platform 11. A convex shaft 211 is located at the center of the main viewing surface of the clamping seat 21. A mounting platform 212 is located on the outer ring of the main viewing surface of the clamping seat 21, and multiple threaded holes are opened on the mounting platform 212. A mounting hole 222 is located at the center of the main viewing surface of the tightening gear 22. The tightening gear 22 is rotatably connected to the clamping seat 21 through the mounting hole 222 and the convex shaft 211. A bearing is provided between the mounting hole 222 and the convex shaft 211, making the rotation of the tightening gear 22 relative to the clamping seat 21 smoother. The main view surface has three sliding grooves 221 arranged in an arc array. The two ends of the sliding grooves 221 are at different distances from the center of the tightening gear 22. The bottom of the sliding block 24 is provided with a sliding post 242. The sliding block 24 is slidably connected to the tightening gear 22 through the sliding post 242 and the sliding grooves 221. The contact surface between the sliding block 24 and the open bushing is arc-shaped, and a buffer pad 241 is provided on the contact end face to ensure stable tightening of the open bushing and prevent the open bushing from being squeezed and causing distortion of its shape. The main view surface of the guide cover 23 is the same shape and size as the clamping seat 21, and is "D" shaped. The guide cover 23 is fixed to the clamping seat 21 by bolts and mounting plate 212. The guide cover 23 has three guide grooves 231 arranged in an arc array on its main viewing surface. Each guide groove 231 has a guide boss 232 on both sides. The sliding block 24 has guide rails 243 that are adapted to the guide bosses 232 on both sides. The sliding block 24 is slidably connected to the guide groove 231 of the guide cover 23 through the guide rails 243 and the guide bosses 232. The guide groove 231 restricts the movement direction of the sliding block 24. Under the combined action of the guide cover 23 and the tightening gear 22, the sliding block 24 will change its radial position synchronously along the guide groove 231 of the guide cover 23 as the tightening gear 22 rotates.

[0046] The verification part 3 includes a verification sleeve 31, a take-out block 32, and a retaining ring 33. The verification sleeve 31 is cylindrical, and its outer arc surface is tangent to the upper surface of the V-shaped support block 12. Handles 311 are threadedly connected to both sides of the verification sleeve 31. The inner diameter of the head of the verification sleeve 31 is equal to the outer diameter that the open bushing should fit. The inner diameter of the tail of the verification sleeve 31 is larger than the inner diameter of the head, thus forming a step inside the verification sleeve 31. Multiple threaded holes are provided on the end face of the tail of the verification sleeve 31. A limiting protrusion ring 322 is provided on the outer arc surface of the take-out block 32. The take-out block 32 is slidably connected to the inner arc surface of the tail of the verification sleeve 31 through the limiting protrusion ring 322. A retaining ring 33 is fixed to the end face of the tail of the verification sleeve 31 by bolts. The movement range of the take-out block 32 is limited by the limiting protrusion ring 322, the retaining ring 33, and the end face of the internal step of the verification sleeve 31. A handle 321 is provided on the end face of the tail of the take-out block 32.

[0047] When verifying the outer diameter of the open bushing after tightening, the open bushing to be verified is placed on the surface of the guide cover 23 of the pre-tightening section 2. At this time, the motor 41 starts, driving the main shaft 13 to rotate. Simultaneously, the drive gear 14 rotates, meshing with the tightening gear 22, causing the tightening gear 22 to rotate. The position of the sliding groove 221 on the tightening gear 22 changes, and the sliding pin 242 slides within the sliding groove 221. The guide groove 231 of the guide cover 23 restricts the rotation and movement direction of the sliding block 24. Under the combined action of the tightening gear 22 and the guide cover 23, the three sliding blocks 24 move synchronously towards the center position of the guide cover 23, clamping the open bushing and tightening it to its minimum state. After clamping the open bushing, the main shaft 13 stops rotating. When motor 41 stops outputting, manually grasp the handle 311 on the calibration sleeve 31 and push the calibration sleeve 31 toward the open bushing, so that the front end of the tightened open bushing is fitted into the calibration sleeve 31. At this time, motor 41 reverses, causing the sliding block 24 to release the open bushing and continue pushing the calibration sleeve 31, so that the open bushing is fully fitted into the calibration sleeve 31. If the tightened open bushing cannot be fitted or cannot be fully fitted into the calibration sleeve 31, then the outer diameter of the open bushing is not suitable. If the tightened open bushing can be fully fitted into the calibration sleeve 31, it means that its tightened outer diameter is suitable. After the calibration is completed, hold the handle 311 and push the grip 321. At this time, the removal block 32 slides inside the calibration sleeve 31 to push the open bushing out of the calibration sleeve 31.

[0048] When calibrating open bushings with different outer diameter requirements, simply replace the calibration part 3 with a different size. Use the V-shaped support block 12 for support. At this time, start the motor 42 to drive the lead screw 15 to rotate, so that the lifting block 123 moves on the lead screw 15, changing the height of the V-shaped support block 12, so that the center of the calibration part 3 and the center of the pre-tightening part 2 are on the same horizontal straight line.

Claims

1. A device for verifying the outer diameter adaptation of an open bushing after tightening, comprising a support platform (1) and a verification part (3), wherein the support platform (1) comprises a platform body (11), characterized in that: The verification part (3) includes a verification sleeve (31), the inner diameter of the head of the verification sleeve (31) is adapted to the open bushing, and also includes a pre-tightening part (2), the pre-tightening part (2) includes a clamping seat (21), a tightening gear (22), a guide cover (23) and a sliding block (24), the clamping seat (21) is fixed to the upper surface of the support platform (1), the tightening gear (22) is rotatably connected to the clamping seat (21), the tightening gear (22) has a sliding groove (221), the bottom of the sliding block (24) is provided with a sliding column (242), the sliding block (24) is slidably connected to the tightening gear (22) through the sliding column (242) and the sliding groove (221), the guide cover (23) is provided with a guide groove (231), the guide groove (231) is opened along the radial direction, and the sliding block (24) is slidably connected to the guide cover (23) through the guide groove (231).

2. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 1, is characterized in that: The inner diameter of the tail of the verification sleeve (31) is larger than the inner diameter of the head of the verification sleeve (31). The verification part (3) also includes a take-out block (32). A limiting protrusion (322) is provided on the outer arc surface of the take-out block (32). The take-out block (32) is slidably connected to the inner hole of the tail of the verification sleeve (31) through the limiting protrusion (322). The verification part (3) also includes a retaining ring (33). The retaining ring (33) is fixedly connected to the end face of the tail of the verification sleeve (31).

3. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 1, is characterized in that: The tightening gear (22) has a mounting hole (222) at its center. Multiple sliding grooves (221) are evenly distributed along an arc array on the tightening gear (22). The two ends of the sliding grooves (221) are at different distances from the center of the tightening gear (22).

4. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 3, is characterized in that: The clamping seat (21) is provided with a convex shaft (211) and a mounting platform (212). The tightening gear (22) is rotatably connected to the clamping seat (21) through the convex shaft (211) and the mounting hole (222).

5. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 4, is characterized in that: The guide groove (231) is distributed in a circular arc array on the guide cover (23). The guide cover (23) is fixedly connected to the clamping seat (21) through the mounting platform (212). Guide bosses (232) are provided on both sides of the guide groove (231).

6. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 5, is characterized in that: The sliding block (24) has a guide rail (243) on its side. The sliding block (24) is slidably connected to the guide cover (23) through the guide rail (243) and the guide boss (232). The contact surface between the sliding block (24) and the open bushing is arc-shaped. A buffer pad (241) is provided on the end face of the sliding block (24) that contacts the open bushing.

7. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 1, is characterized in that: The pre-tightening part (2) also includes a main shaft (13) and a drive gear (14). The main shaft (13) is rotatably connected to the platform (11) through a bearing. The drive gear (14) is mounted on the main shaft (13) through a key connection. The drive gear (14) meshes with the tightening gear (22) for transmission.

8. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 1, is characterized in that: The support platform (1) also includes a lifting support mechanism, which includes a V-shaped support block (12), a lead screw (15) and a lifting block (123). The upper side of the cross section of the V-shaped support block (12) is V-shaped. The two inclined surfaces on the upper side of the V-shaped support block (12) are tangent to the outer arc surface of the calibration sleeve (31). The lead screw (15) is rotatably connected to the platform body (11) through a bearing. The lifting block (123) is threadedly connected to the lead screw (15). The lifting block (123) is fixedly connected to the V-shaped support block (12).

9. The device for verifying the outer diameter adaptation of an open bushing after tightening, as described in claim 8, is characterized in that: The bottom of the V-shaped support block (12) is provided with a support leg (121), and a support block guide platform (122) is provided on the side of the support leg (121). The V-shaped support block (12) is slidably connected to the platform (11) through the support block guide platform (122), and the lifting block (123) is fixedly connected to the V-shaped support block (12) through the support leg (121).

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