Checking fixture used for compressor thread structure main shaft driving disc

Abstract

The utility model discloses a testing fixture used for a compressor thread structure main shaft driving disc, comprising a positioning part and a driving part, the positioning part comprises a pedestal fixed on a workbench, the center of the top of the pedestal is provided with a positioning projection, the periphery of the positioning projection is sleeved with a spacing seat, and the top of the positioning projection is fixedly provided with a positioning sleeve; the driving part comprises an adapter and a threaded sleeve coaxially sleeved at the bottom of the adapter, and the adapter and the threaded sleeve are fixed through a rotation stopping pin. According to the utility model, through the positioning cooperation of the positioning sleeve and the driving disc main shaft and the combination of the limiting block design of the limiting seat, the radial and axial accurate positioning and rotation limiting of the driving disc are realized, the uniform stress in the detection process is ensured, and the axial measurement deformation does not occur when the torque is tested; the thread bushing can be quickly screwed in and out through the free driving part, so that the detection efficiency is improved; the whole testing fixture is high in universality, the product quality and the production efficiency can be improved, the clamping time is saved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of torque detection technology for compressor components, specifically a gauge for the screw-structure main shaft drive disc of a compressor. Background Technology

[0002] Traditional variable displacement compressor clutches consist of a pulley assembly and a drive disc assembly. Power from the car engine is transmitted to the driver via the compressor pulley. The driver then transmits power to the drive disc spindle via a threaded connection. The drive disc spindle rotates the drive disc and other components, causing the compressor to operate. If the tightening torque between the drive disc spindle and the drive disc is insufficient, slippage will occur, and the compressor will malfunction. Therefore, torque detection of the spindle drive disc is crucial; whether the torque value meets the standard directly affects the overall operation of the compressor.

[0003] Currently, conventional torque testing involves the operator inserting the splined end of the spindle drive disc into a simple fixture. However, torque testing of a threaded drive disc spindle requires screwing one end of the spindle threaded into a threaded sleeve and tightening it before testing. Using the conventional simple fixture, the spindle drive disc must be rotated to screw in the thread, and then rotated again to unscrew it after the torque measurement. Therefore, the entire testing process is very time-consuming. Furthermore, due to unbalanced forces during torque measurement, the thread can easily break off, leading to product scrap and fixture replacement. All these factors contribute to the time-consuming and labor-intensive testing process. Combined with the instability of manual operation, it is impossible to achieve consistent accuracy and quality in torque values, potentially causing a decline in the quality of automotive air conditioning compressors. Therefore, we provide a fixture for the threaded drive disc of a compressor spindle. Utility Model Content

[0004] The purpose of this invention is to provide a fixture for a compressor threaded main shaft drive disc to solve the problems mentioned in the background art, enabling the operator to quickly screw in and out the threads during torque testing, thus improving the efficiency of torque detection; furthermore, this fixture provides positioning for the threaded drive disc, preventing axial deformation during testing and improving the accuracy of torque detection.

[0005] This utility model can be achieved through the following technical solution: a fixture for a compressor threaded structure spindle drive disk, comprising: a positioning part and a driving part, wherein the positioning part includes a base fixed on the worktable, a positioning protrusion is provided at the center of the top of the base, a limiting seat is sleeved on the outer periphery of the positioning protrusion, and a positioning sleeve is fixedly installed on the top of the positioning protrusion for axial and radial positioning of the drive disk spindle and drive disk to be inspected; the driving part includes an adapter and a threaded sleeve coaxially sleeved at its bottom, the two being fixed by an anti-rotation pin.

[0006] A further technical improvement of this utility model is that: two limiting blocks are provided on the top of the limiting seat, and an active gap is maintained between the two sides of the semi-circular positioning ring on the outer side of the drive disk and the two limiting blocks.

[0007] A further technical improvement of this utility model is that the inner hole of the threaded sleeve is provided with an internal thread, which engages with the thread on the top of the drive disc spindle.

[0008] A further technical improvement of this utility model is that the top of the adapter has a square hole for engaging with a torque wrench.

[0009] A further technical improvement of this utility model is that: through holes are provided on the side walls of the adapter and the threaded sleeve, and the anti-rotation pin is inserted through the through holes of both to achieve the connection between the two.

[0010] A further technical improvement of this utility model is that: a positioning hole is provided on the top of the positioning protrusion, the positioning sleeve is interference-fitted with the positioning hole, and a through hole is opened at the bottom of the positioning hole. During testing, the lower section of the drive disk spindle extends into the through hole of the base.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model achieves precise radial and axial positioning and rotational limiting of the drive disk by positioning sleeve and drive disk spindle positioning cooperation, combined with the limiting block design of the limiting seat, to ensure uniform force during the testing process, avoid skew error, and prevent axial deformation when testing torque.

[0013] The free-moving drive unit allows the threaded sleeve to be screwed in and out quickly, improving inspection efficiency; the limit seat is fixed to the base with screws, making it easy to disassemble and save changeover time; the entire fixture is highly versatile, improving product quality and production efficiency, saving clamping time, and reducing the labor intensity of workers. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structural connection of this utility model;

[0017] Figure 3 This is a schematic diagram of the structural connection of this utility model.

[0018] In the diagram: 1. Adapter; 2. Anti-rotation pin; 3. Threaded sleeve; 4. Drive disc spindle; 5. Drive disc; 6. Positioning sleeve; 7. Limit seat; 8. Base; 9. Locking bolt; 10. Worktable; 11. Locking nut; 12. Screw. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] Please see Figure 1-3 As shown, a fixture for a compressor threaded main shaft drive disc includes a positioning part and a driving part. The positioning part includes a worktable 10. A base 8 is fixedly installed on the top of the worktable 10 by a locking bolt 9 and a locking nut 11. A positioning protrusion is provided in the middle part of the top of the base 8.

[0021] A limiting seat 7 is fitted around the outer periphery of the positioning protrusion, and the limiting seat 7 is fixed to the top of the base 8 by screws 12; a positioning hole is provided at the middle position of the top of the positioning protrusion, and a through hole is provided at the middle position of the bottom of the positioning hole; a positioning sleeve 6 is fixed in the positioning hole by interference fit.

[0022] The positioning sleeve 6 has a drive disk spindle 4 inserted inside. The lower section of the drive disk spindle 4 extends into the through hole of the base 8. The drive disk 5 is coaxially fixed to the outer periphery of the drive disk spindle 4 with an interference fit. The drive disk 5 contacts the bottom of the positioning sleeve 4, so that the positioning sleeve 6 can accurately position the drive disk 5 radially and axially.

[0023] Furthermore, two limiting blocks are symmetrically provided on the top of the limiting seat 7; a semi-circular positioning ring is provided on the outer side of the drive disk 5, and there is a certain distance of movement between the two ends of the positioning ring and the two limiting blocks.

[0024] The drive unit includes an adapter 1, a stop pin 2, and a threaded sleeve 3. The threaded sleeve 3 is coaxially disposed in the bottom mounting hole of the adapter 1, and the threaded sleeve 3 and the adapter 1 are connected together by the stop pin 2 passing through their side walls.

[0025] The inner hole of the threaded sleeve 3 has an internal thread that mates with the thread on the top of the drive disc spindle 4. The top of the adapter 1 has a square hole for mates with a torque wrench.

[0026] In use, the drive disc spindle 4, on which the drive disc 5 is mounted, passes through the positioning sleeve 6 and extends into the through hole of the base 8. Then, the drive unit is connected and fixed to the upper end of the drive disc spindle 4 using the threaded sleeve 4. After installation, the probe of the torque wrench is inserted into the square hole in the middle of the adapter 1, and the torque value of the torque wrench is preset. The torque wrench is rotated horizontally to drive the drive disc 5 to rotate. The positioning ring on the drive disc 5 contacts the limit block. Under the action of the set torque applied by the torque wrench, it is detected whether there is relative rotation between the drive disc spindle 4 and the drive disc 5, thereby determining whether the assembly of the part is qualified.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gauge for a screw-structured spindle drive disc of a compressor, characterized in that... ,include: The positioning part includes a base (8) fixed on the worktable (10), a positioning protrusion is provided at the top center of the base (8), a limiting seat (7) is sleeved on the outer periphery of the positioning protrusion, and a positioning sleeve (6) is fixedly installed on the top of the positioning protrusion for axial and radial positioning of the drive disk spindle (4) and drive disk (5) to be inspected. The drive unit includes an adapter (1) and a threaded sleeve (3) coaxially fitted at its bottom, both of which are fixed by a stop pin (2).

2. The inspection fixture for the screw-structure spindle drive disc of a compressor according to claim 1, characterized in that, The top of the limiting seat (7) is provided with two limiting blocks, and the two sides of the semi-circular positioning ring on the outside of the drive disk (5) are provided with an active gap between them and the two limiting blocks.

3. A fixture for a compressor threaded spindle drive disc according to claim 1, characterized in that, The inner hole of the threaded sleeve (3) is provided with an internal thread, which is engaged with the thread on the top of the drive disc spindle (4).

4. A fixture for a compressor threaded spindle drive disc according to claim 1, characterized in that, The top of the adapter (1) has a square hole for engaging with a torque wrench.

5. A fixture for a compressor threaded spindle drive disc according to claim 1, characterized in that, The adapter (1) and the threaded sleeve (3) have through holes on their side walls, and the anti-rotation pin (2) passes through the through holes of both to connect them.

6. A fixture for a compressor threaded spindle drive disc according to claim 1, characterized in that, The top of the positioning protrusion is provided with a positioning hole, the positioning sleeve (6) is interference-fitted with the positioning hole, and a through hole is opened at the bottom of the positioning hole. During testing, the lower section of the drive disk spindle (4) extends into the through hole of the base (8).

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