Clamp tool for turning scroll plate of electric compressor

Abstract

The utility model discloses a clamp tool for turning a scroll plate of an electric compressor, which comprises a base plate and a support plate fixed above the base plate, the support plate comprises an inner support table and an outer ring which are arranged inside and outside, the outer ring is fixedly connected to the edge of the base plate, and the inner support table is used for being supported in the scroll plate. A connecting rod is fixedly connected between the inner supporting table and the outer ring, a main shaft pull rod is fixedly connected to the center of the base plate, clamping jaws are fixedly connected to the position, located between the outer ring and the inner supporting table, of the base plate, the clamping jaws are distributed on the base plate in an annular array mode, and the clamping jaws make contact with a vortex line of the vortex plate and are used for clamping the vortex plate. And the clamping jaws contract inwards to clamp the scroll plate. When the main shaft pull rod moves upwards, the base plate slightly deforms, the distance between the upper ends of the clamping jaws is increased, the scroll plate to be machined is arranged on the inner supporting table between the clamping jaws, the main shaft pull rod moves downwards, the base plate slightly deforms, the distance between the upper ends of the clamping jaws is decreased, and at the moment, the clamping jaws contract to clamp the scroll plate.

Description

Technical Field

[0001] This utility model relates to a fixture for turning the scroll plate of an electric compressor, belonging to the field of parts processing fixture technology. Background Technology

[0002] CNC machine tool machining is a widely used method for parts processing. With technological advancements, many companies have increasingly higher requirements for the quality and precision of machined parts. However, various problems can arise during machining, with the design of the machining process and tooling being the main causes. To effectively improve the overall quality and level of parts machining, the most important task is to optimize the machining process and use more sophisticated machining tooling. Currently, several common problems exist in parts machining: 1. The skill levels of machining personnel are limited and vary. When encountering problems during parts machining, they may provide different solutions based on their work experience, which cannot effectively guarantee production quality and ultimately affects parts machining. 2. The chosen machining method is not optimal. Therefore, developing tooling that can significantly improve the level of parts machining is particularly important. Furthermore, it can be applied to similar parts machining tooling, inevitably bringing significant economic and social benefits.

[0003] Pneumatic tooling is a commonly used tooling for machining parts, and its low cost and generally sufficient precision make it widely used. However, for automotive air conditioning compressors, its precision is insufficient. The core component of an automotive air conditioning electric compressor is the meshing and matching of the moving and stationary discs. If the fit is not good, it can easily lead to problems such as abnormal noise or leakage during operation. Utility Model Content

[0004] The purpose of this utility model is to provide a fixture for turning the scroll plate of an electric compressor, which solves the technical problem that the existing pneumatic fixtures have low precision and cannot meet the high machining precision requirements of the scroll plate of an automotive air conditioning compressor.

[0005] This utility model adopts the following technical solution: a fixture for turning a scroll plate of an electric compressor, comprising a chassis and a support plate fixed above the chassis. The support plate includes an inner support platform and an outer ring, which are arranged inside and outside. The outer ring is fixedly connected to the edge of the chassis. The inner support platform is used to support the scroll plate. A connecting rod is fixedly connected between the inner support platform and the outer ring. A main shaft tie rod is fixedly connected to the center of the chassis. A chuck is fixedly connected to the chassis between the outer ring and the inner support platform. The chuck is arranged in a ring array on the chassis. The chuck contacts the scroll line of the scroll plate to clamp the scroll plate. When the main shaft tie rod moves, the chassis deforms, and the chuck retracts inward to clamp the scroll plate.

[0006] The main spindle pull rod extends from the center of the chassis, and its upper end is sealed to the bottom surface of the inner support platform. The main spindle pull rod has a vacuum extraction channel inside, and the support plate has an upward-facing airtight hole. When the chuck clamps the scroll plate, the airtight hole is sealed to the inner side of the scroll plate. The inner support platform has a gas channel, one end of which is connected to the vacuum extraction channel and the other end of which is connected to the airtight hole. The support plate has an airtightness detection port that is connected to the gas channel.

[0007] The airtightness detection port is located on the outer edge of the connecting rod near the chassis. The connecting rod has an airtightness detection channel that communicates with the gas channel, and one end of the airtightness detection channel is the airtightness detection port.

[0008] The inner support platform is provided with an upward-facing airtight hole boss, and the airtight hole is opened in the airtight hole boss.

[0009] The number of airtight hole bosses is equal to the number of connecting rods. The airtight hole bosses are distributed in a ring on the inner support platform, and each airtight hole boss corresponds to each connecting rod.

[0010] The main shaft tie rod is threadedly connected to the center of the chassis.

[0011] The outer edge of the upper surface of the chassis is provided with a first annular boss, and the bottom surface of the outer ring of the support plate is provided with an annular groove for engaging in the first annular boss. The outer ring of the support plate is fixedly connected to the first annular boss by bolts.

[0012] The upper surface of the chassis is provided with a second annular boss, which is concentrically arranged with the first annular boss. The bottom surface of the claw is provided with a groove for engaging with the second annular boss, and the claw is fixedly connected to the second annular boss by bolts.

[0013] The inner side of the upper end of the claw is provided with teeth for engaging with the vortex line sidewall of the vortex disk.

[0014] There are three of each type of jaw and connecting rod, with each jaw and connecting rod arranged sequentially at intervals.

[0015] The beneficial effects of this invention are as follows: Under normal conditions, there is a gap between the chuck and the wall of the scroll plate, so it does not affect normal feeding. When the spindle pull rod moves upward, the chassis undergoes a slight elastic deformation, and the distance between the upper ends of the chuck increases. The scroll plate to be processed is placed on the inner support platform between the chucks. When the spindle pull rod moves downward, the chassis undergoes a slight elastic deformation, and the distance between the upper ends of the chucks decreases. At this time, the chucks retract to clamp the scroll plate, and the machine tool begins processing. This invention uses chucks to clamp the part circumferentially, and the inner support platform supports the part inside, making the support of the part more stable, reducing the probability of part deformation, avoiding errors caused by part deformation, and improving the part processing qualification rate.

[0016] Preferably, this invention incorporates an airtight structure within the support plate. The vacuum extraction channel of the main shaft tie rod is connected to this airtight structure. After the main shaft tie rod deforms the chassis, the airtight hole seals tightly against the scroll plate. A vacuum is created in the gas channel through the vacuum extraction channel of the main shaft tie rod, and the airtightness is detected in real time through the airtightness detection port. If there is an error in the preceding processing step, if the part is not properly clamped, or if the part moves during processing, the airtightness detection mechanism will alarm, and the entire system will stop operating immediately. This reduces the scrap rate of parts, thereby lowering the labor cost.

[0017] Preferably, the jaws and support plate are fixed to the chassis with bolts, which facilitates the disassembly of the jaws and support plate and makes maintenance and replacement convenient.

[0018] Preferably, the teeth on the jaws allow the jaws to better adhere to the side wall of the scroll plate, resulting in a larger contact area between the jaws and the scroll plate, which effectively reduces the risk of part displacement during processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a fixture for turning an electric compressor scroll plate according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A top-down plan view;

[0021] Figure 3 yes Figure 1 A sectional view;

[0022] Figure 4 yes Figure 1 Schematic diagram of the central support plate;

[0023] Figure 5 yes Figure 4 A top-down plan view;

[0024] Figure 6 yes Figure 1 A schematic diagram of the chuck's claw;

[0025] Figure 7 yes Figure 6 A plan view.

[0026] In the diagram: 1-chassis, 1.1-first annular boss, 1.2-second annular boss, 2-support plate, 2.1-inner support platform, 2.2-outer ring, 2.3-connecting rod, 2.4-air tightness hole, 2.5-gas channel, 2.6-air tightness detection port, 2.7-air tightness detection channel, 3-spindle tie rod, 3.1-vacuum extraction channel, 4-claw, 4.1-tooth, 5-scroll plate. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] This utility model discloses a fixture for turning a scroll plate of an electric compressor, comprising a base 1 and a support plate 2 fixed above the base 1. The support plate 2 includes an inner support platform 2.1 and an outer ring 2.2, which are arranged inside and outside the base 1. The outer ring 2.2 is fixedly connected to the edge of the base 1. The inner support platform 2.1 is used to support the scroll plate 5. A connecting rod 2.3 is fixedly connected between the inner support platform 2.1 and the outer ring 2.2. A main shaft tie rod 3 is fixedly connected to the center of the base 1. A chuck 4 is fixedly connected to the base 1 between the outer ring 2.2 and the inner support platform 2.1. The chuck 4 is arranged in a circular array on the base 1. The chuck 4 contacts the scroll line of the scroll plate 5 to clamp the scroll plate. When the main shaft tie rod 3 moves, the base 1 deforms, and the chuck 4 retracts inward to clamp the scroll plate 5. The inner side of the upper end of the chuck 4 is provided with teeth 4.1 for engaging with the scroll line sidewall of the scroll plate 5.

[0029] The main spindle pull rod 3 extends from the center of the chassis 1 and is threadedly connected to the center of the chassis 1. The upper end of the main spindle pull rod 3 is sealed to the bottom surface of the inner support platform 2.1. The main spindle pull rod 3 has a vacuum extraction channel 3.1 inside. The support plate 2 has an upward-facing airtight hole 2.4. When the chuck 3 clamps the scroll plate 5, the airtight hole 2.4 is sealed to the inner side of the scroll plate 5. The inner support platform 2.1 has a gas channel 2.5 inside. One end of the gas channel 2.5 is connected to the vacuum extraction channel 3.1, and the other end is connected to the airtight hole 2.4. The support plate 2 has an airtightness detection port 2.6 connected to the gas channel 2.5. The airtightness detection port 2.6 is located on the connecting rod 2.3 near the outer edge of the chassis 1. The connecting rod 2.3 has an airtightness detection channel 2.7 inside, connected to the gas channel 2.5. One end of the airtightness detection channel 2.7 is the airtightness detection port 2.6. The inner support platform 2.1 is provided with an upward-facing airtight hole boss, and the airtight hole 2.4 is formed in the airtight hole boss. The number of airtight hole bosses is equal to the number of connecting rods 2.3, and the airtight hole bosses are distributed in a ring on the inner support platform 2.1, with each airtight hole boss corresponding to each connecting rod 2.3.

[0030] The outer edge of the upper surface of the chassis 1 is provided with a first annular boss 1.1. The bottom surface of the outer ring 2.1 of the support disk 2 is provided with an annular groove for engaging with the first annular boss 1.1. The outer ring 2.1 of the support disk 2 is fixedly connected to the first annular boss 1.1 by bolts. The upper surface of the chassis 1 is provided with a second annular boss 1.2, which is concentrically arranged with the first annular boss 1.1. The bottom surface of the claw 4 is provided with a slot for engaging with the second annular boss 1.2. The claw 4 is fixedly connected to the second annular boss 1.2 by bolts. There are three claws 4 and three connecting rods 2.3, which are arranged sequentially at intervals.

[0031] Under normal conditions, there is a gap between the chucks and the wall of the scroll plate, so it does not affect normal feeding. When the spindle pull rod moves upward, the chassis undergoes a slight deformation, and the gap between the upper ends of the chucks increases. The scroll plate to be processed is placed on the inner support platform between the chucks. When the spindle pull rod moves downward, the chassis undergoes a slight deformation, and the gap between the upper ends of the chucks decreases. At this time, the chucks retract and clamp the scroll plate. The chucks have multiple rows of teeth, which can better fit against the side wall of the scroll plate, resulting in a larger contact area and effectively reducing the risk of part displacement during processing. This utility model uses chucks to clamp the part circumferentially, and the inner support platform supports the part inside, making the support of the part more stable, reducing the probability of part deformation, avoiding errors caused by part deformation, and improving the part processing qualification rate.

[0032] An airtight structure is installed inside the support plate, and the vacuum extraction channel of the spindle pull rod is connected to the airtight structure. After the spindle pull rod deforms the chassis, the airtight hole seals tightly with the scroll plate. The gas channel is evacuated through the vacuum extraction channel of the spindle pull rod, and the airtightness is detected in real time through the airtightness detection port. If there is an error in the previous process of the part, the part is not clamped properly, or the part moves during processing, the airtightness detection mechanism will alarm, and the entire system will stop operating directly. Therefore, the scrap rate of parts can be reduced, thereby reducing the labor cost of parts.

[0033] Using the tooling in this embodiment to process the scroll plate enables it to meet the required machining accuracy, ensuring smooth operation and improving product performance. The airtightness detection mechanism detects movement of parts during processing, problems with parts processed in previous stages, and improper placement of workers when loading parts, all of which trigger an airtightness alarm and cause the machine tool to stop.

[0034] The embodiments and descriptions above are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric compressor scroll plate turning jig tool, characterized by: It includes a chassis and a support plate fixed above the chassis. The support plate includes an inner support platform and an outer ring, which are arranged inside and outside the chassis. The outer ring is fixedly connected to the edge of the chassis. The inner support platform is used to support the scroll plate. A connecting rod is fixedly connected between the inner support platform and the outer ring. A main shaft tie rod is fixedly connected to the center of the chassis. A chuck is fixedly connected to the chassis between the outer ring and the inner support platform. The chuck is arranged in a ring array on the chassis. The chuck contacts the scroll line of the scroll plate to clamp the scroll plate. When the main shaft tie rod moves, the chassis deforms and the chuck retracts inward to clamp the scroll plate.

2. The electric compressor scroll disc turning clamp tooling of claim 1, wherein: The main spindle pull rod extends from the center of the chassis, and its upper end is sealed to the bottom surface of the inner support platform. The main spindle pull rod has a vacuum extraction channel inside, and the support plate has an upward-facing airtight hole. When the chuck clamps the scroll plate, the airtight hole is sealed to the inner side of the scroll plate. The inner support platform has a gas channel, one end of which is connected to the vacuum extraction channel and the other end of which is connected to the airtight hole. The support plate has an airtightness detection port that is connected to the gas channel.

3. The electric compressor scroll plate turning jig tool according to claim 2, characterized in that: The airtightness detection port is located on the outer edge of the connecting rod near the chassis. The connecting rod has an airtightness detection channel that communicates with the gas channel, and one end of the airtightness detection channel is the airtightness detection port.

4. The motor compressor scroll plate turning clamp tooling of claim 2, wherein: The inner support platform is provided with an upward-facing airtight hole boss, and the airtight hole is opened in the airtight hole boss.

5. The motor-compressor scroll disk turning clamp tooling of claim 4, wherein: The number of airtight hole bosses is equal to the number of connecting rods. The airtight hole bosses are distributed in a ring on the inner support platform, and each airtight hole boss corresponds to each connecting rod.

6. The motor compressor scroll plate turning clamp tooling of claim 2, wherein: The main shaft tie rod is threadedly connected to the center of the chassis.

7. The motor compressor scroll plate turning clamp tooling of claim 1, wherein: The outer edge of the upper surface of the chassis is provided with a first annular boss, and the bottom surface of the outer ring of the support plate is provided with an annular groove for engaging in the first annular boss. The outer ring of the support plate is fixedly connected to the first annular boss by bolts.

8. The motor-compressor scroll disk turning clamp fixture of claim 7, wherein: The upper surface of the chassis is provided with a second annular boss, which is concentrically arranged with the first annular boss. The bottom surface of the claw is provided with a groove for engaging with the second annular boss, and the claw is fixedly connected to the second annular boss by bolts.

9. The motor compressor scroll plate turning jig tool of claim 1, wherein: The inner side of the upper end of the claw is provided with teeth for engaging with the vortex line sidewall of the vortex disk.

10. The motor compressor scroll plate turning clamp tooling of claim 1, wherein: There are three of each type of jaw and connecting rod, with each jaw and connecting rod arranged sequentially at intervals.

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