Novel compressor multi-angle stator assembly jig

Abstract

A new compressor multi-angle stator assembly jig, comprising a positioning jig (1), a jig base (5), and a gap gauge (6) assembled in the jig base (5), characterized in that the positioning jig (1) is fitted on the jig base (5), and the bottom thereof is provided with a plurality of trapezoidal grooves (11) in the circumferential direction; the jig base (5) is provided with a plurality of positioning grooves (51) in the vertical direction, each positioning groove (51) is arranged at equal intervals along the central axis of the gap gauge (6), a cylindrical positioning pin (3) is assembled in the positioning groove (51), the upper part of the positioning pin (3) is provided with a tapered pin (31) with a reduced diameter matched with the trapezoidal groove (11), and the middle part of the positioning pin (3) is provided with an inner concave locking hole (33). It has the advantages of convenient use, wide application range, etc.

Description

Technical Field

[0001] This utility model relates to stator fixture structure, specifically a novel multi-angle stator assembly fixture for compressors. It can meet the assembly angle requirements of different stator components, reducing tooling manufacturing costs, and saving time during machine model changes and the operator's workload. Background Technology

[0002] In the compressor manufacturing and assembly process, the stator assembly fixture is a core auxiliary device that ensures the precise assembly of the motor (including the stator and rotor), pump body, and housing. This type of fixture uses a conveyor chain to stably load and move the assembled parts. Its standard operating procedure is as follows: first, the motor stator assembly is positioned and installed; then, a clearance gauge is inserted into the inner hole to control the assembly clearance accuracy; next, the rotor assembly, pre-heat-fitted with the pump body, is pressed onto the corresponding stator station; finally, the heat-treated housing assembly is fitted in. Utilizing the principle of thermal expansion and contraction, a tight fit is achieved between the housing and the stator assembly. Subsequently, three-point welding is performed at the connection between the housing and the pump body to ensure the stability of the overall assembly structure. Relying on the positioning and guiding function of this fixture, the machining accuracy and production efficiency during the compressor assembly process can be effectively guaranteed, making it a key tooling device in the compressor production line.

[0003] However, due to the diverse range of compressor models in the industry, there are significant differences in the assembly angles of the motor and pump body between different models (such as phase angle and mounting reference surface angle). Existing stator assembly fixtures are limited by their fixed structural design, and their positioning references and angle adjustment mechanisms cannot adapt to the differences in assembly angles among multiple models. When the production line switches to a compressor model with different angle requirements, a dedicated fixture matching that model must be replaced entirely. This not only results in a long tooling changeover time, disrupting the continuous operation rhythm of the production line and reducing production flow efficiency, but also requires companies to stock multiple sets of fixtures corresponding to different models to meet production needs. This increases the procurement and inventory management costs of tooling equipment, and the frequent disassembly and storage of fixtures increases the risk of equipment damage, causing many inconveniences to actual production operations and making it difficult to adapt to the current flexible production needs of the compressor industry, which involves multiple varieties and small batches. Utility Model Content

[0004] The purpose of this invention is to provide a novel multi-angle stator assembly fixture for compressors, which fundamentally solves the above-mentioned problems and has the advantages of being easy to use and having a wide range of applications.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The novel multi-angle stator assembly fixture for compressors includes a positioning fixture, a fixture base, and a clearance gauge assembled within the fixture base. The key technical features are: the positioning fixture is fitted onto the fixture base, and its bottom has several trapezoidal grooves along its circumferential direction; the fixture base has several positioning grooves along its vertical direction, each positioning groove being equally spaced along the central axis of the clearance gauge; a columnar positioning pin is fitted within each positioning groove; the upper part of the positioning pin has a tapered pin with a reduced diameter that mates with the trapezoidal groove; the middle part of the positioning pin has a recessed locking hole; the bottom of the positioning pin has a reduced diameter limiting protrusion; a spring limits the movement between the bottom of the positioning pin and the bottom of the positioning groove; a button is provided on the side wall of the fixture base, extending through one of the positioning grooves; the button passes through the inner end of the side wall of the fixture base and mates with the locking hole.

[0006] The beneficial effects of this utility model are as follows: In terms of the overall technical solution, relying on the matching structure of the positioning fixture and the fixture base, the positioning fixture can rotate 360° through the precise matching of the inner and outer diameter rings. One set of fixtures can be adapted to different stator assembly directions, making switching convenient and the mechanism stable and reliable.

[0007] The combination of locating pins (including tapered pins) and spring-loaded top pins, along with the small clearance fit between the tapered pins and the trapezoidal grooves, ensures consistent angular positioning accuracy, high positioning precision, and strong mechanism stability.

[0008] The combination of tapered pin-trapezoidal groove design and inner and outer ring rotation function enables a single fixture to adapt to the production of compressors with multiple assembly angles, saving fixture manufacturing costs and reducing preparation time for machine changes and the labor intensity of operators. Attached Figure Description

[0009] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0010] Figure 2 This is a reference diagram showing the usage state of this utility model. Detailed Implementation

[0011] The following combination Figures 1-2 This invention will be described in detail through specific embodiments. The novel multi-angle stator assembly fixture for a compressor comprises a positioning fixture 1, a fixture base 5, and a clearance gauge 6 assembled within the fixture base 5. The fixture base 5 serves as the supporting structure, and the positioning fixture 1 is fitted onto it, with several trapezoidal grooves 11 arranged circumferentially on its bottom. The clearance gauge 6 is fixed to the center of the inner cavity of the fixture base 5, with its axis coinciding with the central axis of the positioning fixture 1, ensuring coaxiality of the stator assembly. The bottom of the positioning fixture 1 has several trapezoidal grooves 11 evenly arranged circumferentially; this embodiment uses three trapezoidal grooves 11 as an example. The fixture base 5 has several positioning grooves 51 arranged vertically, matching the number of trapezoidal grooves 11, for the assembly of positioning pins 3.

[0012] The positioning pin 3 is columnar, with a tapered pin 31 at the top that fits into the trapezoidal groove 11, a locking hole 33 in the middle, and a bottom limiting protrusion 32 for fixing the spring 4. The spring 4 is installed between the bottom of the positioning pin 3 and the bottom of the positioning groove 51, and in the pre-compressed state, pushes the tapered pin 31 to fit tightly into the trapezoidal groove 11. The button 2 horizontally penetrates the side wall of the fixture base 5 to one of the positioning grooves 51, and the inner end of the button 2 can penetrate the side wall of the fixture base 5 and cooperate with the locking hole 33 to achieve unlocking / locking.

[0013] Working principle: Unlocking: Press down button 2, its inner end is pushed into lock hole 33, push positioning pin 3 to move down and compress spring, tapered pin 31 disengages from trapezoidal groove 11, positioning fixture can rotate freely.

[0014] Angle adjustment: Keep button 2 pressed down and rotate positioning fixture 1 to the target angle so that a trapezoidal groove 11 is aligned with the tapered pin.

[0015] Locking: Release button 2, the spring rebounds and pushes the positioning pin 3 upward, the tapered pin is engaged in the trapezoidal groove 11, the button is reset, and the angle locking is completed.

[0016] The above design allows for quick adaptation to different stator assembly angles, balancing positioning accuracy and ease of operation.

[0017] Explanation of reference numerals in the attached figures: 1. Positioning fixture; 11. Trapezoidal groove; 2 buttons; 3. Locating pin, 31. Tapered pin, 32. Limiting protrusion, 33. Locking hole; 4. Spring; 5. Fixture base; 51. Positioning slot; 6. Gap gauge.

Claims

1. A novel multi-angle stator assembly fixture for a compressor, comprising a positioning fixture (1), a fixture base (5), and a clearance gauge (6) assembled within the fixture base (5), characterized in that: The positioning fixture (1) is fitted on the fixture base (5), and its bottom is provided with several trapezoidal grooves (11) along the circumferential direction; the fixture base (5) is provided with several positioning grooves (51) along the vertical direction, and each positioning groove (51) is arranged at equal intervals along the central axis of the gap gauge (6). A columnar positioning pin (3) is fitted in the positioning groove (51). The upper part of the positioning pin (3) is provided with a tapered pin (31) that fits with the trapezoidal groove (11) with a reduced diameter. The middle part of the positioning pin (3) is provided with a recessed locking hole (33). The bottom of the positioning pin (3) is provided with a limiting protrusion (32) with a reduced diameter. A spring (4) limits the bottom of the positioning pin (3) and the bottom of the positioning groove (51). A button (2) is provided on the side wall of the fixture base (5) through one of the positioning grooves (51). The button (2) passes through the inner end of the side wall of the fixture base (5) and fits with the locking hole (33).

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