Machining tool for scroll plate of automobile air conditioner compressor

Abstract

The utility model discloses an automobile air conditioner compressor scroll plate machining tool which comprises a tool base, a workpiece placing assembly is installed in the middle of the top of the tool base, four clamping assemblies are installed on the tool base, the clamping assemblies are in butt joint with a synchronous driving assembly installed in the tool base, and the synchronous driving assembly is used for driving the four clamping assemblies to operate synchronously. The workpiece placing assembly comprises a disc seat body placed in the groove in the top of the tool seat, and the disc seat body is clamped with the groove in the top of the tool seat. Through the precise embedding design of the spiral groove and the spiral end of the scroll plate and the mechanical limiting of the clamping block and the clamping groove, the circumferential rigid constraint of the workpiece is realized before clamping, and the rotation deviation caused by grinding vibration is effectively avoided. The stability can be ensured only by providing moderate lateral clamping force for the four clamping assemblies, damage caused by too tight clamping is prevented, and the problem that rotation prevention is insufficient in traditional pure side face clamping is solved.

Description

Technical Field

[0001] This utility model relates to the field of turbine machining technology, and in particular to a tooling for machining the turbine of an automotive air conditioning compressor. Background Technology

[0002] As a core component of new energy air conditioning electric scroll compressors, the machining accuracy of the automotive air conditioning compressor scroll directly affects the performance and efficiency of the compressor. The scroll is divided into a flat end and a spiral end. When polishing the flat end, a machining fixture with positioning function is required to effectively improve the stability of the machining.

[0003] The applicant found that the existing processing fixtures have certain shortcomings. Most of them simply place the workpiece directly on the fixture table and then clamp the side of the scroll plate with multiple clamping plates. However, during grinding, the scroll plate may still rotate at a certain angle due to vibration or loosen. If the clamping is too tight, it may damage the scroll plate or the support plate. There is no good auxiliary mechanism to prevent the workpiece from rotating.

[0004] Secondly, most existing clamping mechanisms are driven by independent lead screws. The lead screw drives the threaded block, and the threaded block moves the clamping mechanism through a connecting rod. However, during the processing, dust can easily fall onto the lead screw and cause problems. Moreover, most of them are driven independently, and whether electric or manual, they cannot perform one-step clamping simultaneously, resulting in low efficiency.

[0005] Therefore, the applicant proposes a machining tooling for the scroll plate of an automotive air conditioning compressor to solve this problem. Utility Model Content

[0006] This utility model provides a machining fixture for the scroll plate of an automotive air conditioning compressor, which solves the problems mentioned in the background.

[0007] To solve the above-mentioned technical problems, this utility model provides a machining fixture for an automotive air conditioning compressor scroll, including a fixture base. A workpiece placement assembly is installed at the top center of the fixture base. Four sets of clamping assemblies are installed on the fixture base. The clamping assemblies are connected to a synchronous drive assembly installed inside the fixture base to drive the four sets of clamping assemblies to operate synchronously. The workpiece placement assembly includes a disc seat body placed in a groove at the top of the fixture base, and the disc seat body is engaged with the groove at the top of the fixture base. A spiral groove is installed on the top of the disc seat body, and a spiral portion of the scroll body is inserted into the spiral groove.

[0008] The disc base is vertically limited by the clamping assembly.

[0009] Preferably, the clamping assembly includes four sets of sliders slidably mounted on the top of the inner cavity of the tooling seat. An L-shaped plate fixed to the top of the slider slides through the opening of the tooling seat, and an arc-shaped clamping plate is fixed to one end of the L-shaped plate.

[0010] Preferably, the dustproof plate sleeved on the upper end of the L-shaped plate has a rubber pad adhered to the bottom of the dustproof plate that fits against the top of the fixture seat, and when the L-shaped plate completes clamping and moves to one end of the opening of the fixture seat, the dustproof plate seals the surface of the opening.

[0011] Preferably, a positioning rod is fixed to one end of the dustproof plate, and the positioning rod is simultaneously inserted into the insertion hole on the side of the disc base when the L-shaped plate is clamped.

[0012] Preferably, the locking blocks on both sides of the disc base are engaged in the locking slots a inside the groove at the top of the tooling base.

[0013] Preferably, the synchronous drive assembly includes a motor fixed to the tooling base, a large bevel gear mounted on the top of the motor, small bevel gears meshing on the four sides of the large bevel gear, the small bevel gears being rotatably mounted on the side wall of a support plate fixed inside the tooling base, and a lead screw connecting the support plate to the inner wall of the tooling base, the lead screw being rotatably connected to the slider, and the lead screw and the small bevel gears sharing a rotating shaft for synchronous rotation.

[0014] Compared with related technologies, the machining tooling for the scroll plate of an automotive air conditioning compressor provided by this utility model has the following beneficial effects:

[0015] 1. Through the precise fitting design of the spiral groove and the spiral end of the scroll plate, combined with the mechanical limiting of the clamping block and the slot, the circumferential rigid constraint of the workpiece is achieved before clamping, effectively avoiding rotational deviation caused by grinding vibration. The four clamping components only need to provide moderate lateral clamping force to ensure stability, which not only prevents damage caused by excessive clamping, but also solves the problem of insufficient anti-rotation of traditional pure side clamping.

[0016] 2. The structure adopts a motor-driven bevel gear set to synchronously drive four sets of lead screws, realizing four-way synchronous clamping under the control of a single power source. The clamping force is uniform and can be completed in one step, which improves efficiency compared to the independent drive method. When the clamping is in place, the tooling opening is automatically closed to prevent machining debris from contaminating the lead screw transmission system and extend its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a partial three-dimensional representation of the present invention. Figure 1 ;

[0020] Figure 4 This is a partial three-dimensional representation of the present invention. Figure 2 .

[0021] The following are the labels in the diagram: 1. Tooling base; 2. Workpiece placement assembly; 21. Scroll disc body; 22. Disc base; 23. Clamping block; 24. Spiral groove; 3. Clamping assembly; 31. Slider; 32. L-shaped plate; 33. Arc-shaped clamping plate; 34. Dustproof plate; 35. Positioning rod; 4. Synchronous drive assembly; 41. Motor; 42. Large bevel gear; 43. Small bevel gear; 44. Lead screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1-4 This utility model provides a machining fixture for an automotive air conditioning compressor scroll, including a fixture base 1. A workpiece placement assembly 2 is installed at the top center of the fixture base 1. Four sets of clamping assemblies 3 are installed on the fixture base 1. The clamping assemblies 3 are connected to a synchronous drive assembly 4 installed inside the fixture base 1 to drive the four sets of clamping assemblies 3 to operate synchronously. The workpiece placement assembly 2 includes a disc seat 22 placed in the top groove of the fixture base 1, and the disc seat 22 is engaged with the top groove of the fixture base 1. A spiral groove 24 is installed on the top of the disc seat 22, and the spiral part of the scroll body 21 is inserted into the spiral groove 24. The disc seat 22 is vertically limited by the clamping of the clamping assembly 3. The locking blocks 23 on both sides of the disc seat 22 are engaged in the locking grooves a inside the top groove of the fixture base 1 (see...). Figure 2 ).

[0024] With the design of the workpiece placement component 2, during processing, the fixture 1 is installed on the grinding machine using existing technology. Then, the spiral end of the scroll plate body 21 is inserted into the spiral groove 24, forming a lock. At this point, the scroll plate body 21 cannot rotate or move horizontally. Next, the two handles of the disc seat 22 are grasped, and the disc seat 22 is placed in the top groove of the fixture 1. At this time, the locking blocks 23 on both sides of the disc seat 22 are locked inside the locking grooves a on the inner side of the top groove of the fixture 1, preventing the disc seat 22 from rotating. Then, the synchronous drive component 4 is activated, driving the four sets of clamping components 3 to synchronously clamp the side wall of the horizontal end of the scroll plate body 21. Yes, and at the same time, the disc base 22 is further limited so that it cannot move up and down, so that the surface of the scroll plate body 21 can be polished. In this way, the scroll plate body 21 will not loosen due to vibration, and the spiral groove 24 makes the scroll plate body 21 more stable. It is always in the center of the clamping position when placed, making clamping more convenient and stable. After polishing, the four sets of clamping components 3 can be released to release the limitation of the disc base 22. Then the disc base 22 can be taken out, and the scroll plate body 21 can be pulled vertically upward, avoiding the trouble of removal caused by the obstruction of the clamping components 3.

[0025] The clamping assembly 3 includes four sets of sliders 31 that are slidably installed on the top of the inner cavity of the tooling base 1. Two convex sliding plates are installed on the top of the inner cavity of the tooling base 1, and the convex sliding plates slide in the limiting slides on the top of the sliders 31. The L-shaped plate 32 fixed on the top of the sliders 31 slides through the opening of the tooling base 1. An arc-shaped clamping plate 33 is fixed at one end of the L-shaped plate 32. A dustproof plate 34 is sleeved on the upper end of the L-shaped plate 32. The rubber pads glued to the bottom of the dustproof plate 34 are in contact with the top of the tooling base 1. When the L-shaped plate 32 completes clamping and moves to the opening end of the tooling base 1 to be in contact, the dustproof plate 34 seals the surface of the opening. The width of the dustproof plate 34 is greater than the opening. A positioning rod 35 is fixed at one end of the dustproof plate 34. When the L-shaped plate 32 completes clamping, the positioning rod 35 is simultaneously inserted into the insertion hole on the side of the disc base 22.

[0026] The synchronous drive assembly 4 includes a motor 41 fixed to the fixture base 1. A large bevel gear 42 is mounted on the top of the motor 41. Small bevel gears 43 mesh on the four sides of the large bevel gear 42. The small bevel gears 43 are rotatably mounted on the side wall of a support plate fixed inside the fixture base 1. A lead screw 44 is connected to the inner wall of the fixture base 1. The lead screw 44 is rotatably connected to the slider 31. The lead screw 44 and the small bevel gears 43 share a rotating shaft for synchronous rotation.

[0027] The clamping assembly 3 is designed to perform a clamping operation after placement. Specifically, the motor 41 is started, driving the large bevel gear 42 to rotate. This, in turn, drives four sets of small bevel gears 43 to rotate synchronously via bevel gear meshing, which in turn drives four sets of lead screws 44 to rotate synchronously. As the lead screws 44 rotate, the threaded slider 31 slides radially along the convex sliding plate, pushing the L-shaped plate 32 and the arc-shaped clamping plate 33 towards the center. When the four sets of arc-shaped clamping plates 33 simultaneously contact the horizontal end sidewall of the scroll plate body 21, uniform clamping is achieved. Simultaneously, when the L-shaped plate 32 moves to the end of the tooling seat 1 opening, the dustproof plate 34 completely covers the opening, and the rubber pad at its bottom forms a seal, effectively preventing machining debris from entering the tooling. At this time, the positioning rod 35 accurately inserts into the insertion hole on the sidewall of the disc seat 22, achieving double locking: preventing both vertical and horizontal displacement of the disc seat 22.

[0028] Working principle: First, insert the spiral end of the scroll plate body 21 into the spiral groove 24 of the disc seat 22, so that the scroll plate body 21 cannot move or rotate in the horizontal direction, and the two are tightly bound together. Then, hold the handle of the disc seat 22 and place it into the groove at the top of the tooling seat 1, so that the locking blocks 23 on both sides are embedded in the locking slots a of the groove, preventing the disc seat 22 from rotating. Start the motor 41, drive the large bevel gear 42 to rotate, and drive the four sets of small bevel gears 43 to rotate synchronously through bevel gear meshing, thereby causing the four sets of lead screws 44 to rotate synchronously. The lead screws 44 drive the slider 31 to slide radially along the convex slide plate, pushing the L-shaped plate 32 and the arc-shaped clamping plate 33 to move towards the center, until the four sets of arc-shaped clamping plates 33 simultaneously clamp the horizontal end of the scroll plate body 21. The wall ensures even distribution of clamping force. During clamping, the dustproof plate 34 moves with the L-shaped plate 32 and eventually completely covers the opening of the tooling seat 1. The rubber pad at the bottom forms a seal to prevent machining debris from entering the tooling. At the same time, the positioning rod 35 is inserted into the insertion hole on the side of the disc seat 22 to further limit the vertical and horizontal displacement of the disc seat 22 and enhance overall stability. After clamping, the scroll plate body 21 is firmly fixed and can be used for grinding, milling and other machining operations. It will not loosen even under high-frequency vibration. After machining is completed, the reverse start motor 41 is started to retract the clamping assembly 3 and release the limit on the disc seat 22. The operator can easily remove the disc seat 22 and the scroll plate body 21, avoiding the disassembly difficulties caused by the obstruction of traditional fixtures.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automobile air conditioner compressor scroll machining tooling, comprising a tooling seat (1), characterized in that: The tooling base (1) is equipped with a workpiece placement assembly (2) at the top center position. The tooling base (1) is equipped with four sets of clamping assemblies (3). The clamping assemblies (3) are connected to the synchronous drive assembly (4) installed inside the tooling base (1) to drive the four sets of clamping assemblies (3) to operate synchronously. The workpiece placement assembly (2) includes a disc seat (22) placed in the top groove of the fixture seat (1), and the disc seat (22) engages with the top groove of the fixture seat (1). A spiral groove (24) is installed on the top of the disc seat (22), and a spiral part of the scroll plate body (21) is inserted into the spiral groove (24). The disc base (22) is vertically limited by the clamping assembly (3).

2. The machining tool for a compressor wheel of an automobile air conditioner according to claim 1, wherein The clamping assembly (3) includes four sets of sliders (31) that are slidably installed on the top of the inner cavity of the tooling base (1). The L-shaped plate (32) fixed on the top of the slider (31) slides through the opening of the tooling base (1), and an arc-shaped clamping plate (33) is fixed at one end of the L-shaped plate (32).

3. The machining tool for a compressor wheel of an automobile air conditioner according to claim 2, wherein The dustproof plate (34) is sleeved on the upper end of the L-shaped plate (32). The rubber pad glued to the bottom of the dustproof plate (34) is in contact with the top of the tooling seat (1). When the L-shaped plate (32) completes clamping and moves to one end of the opening of the tooling seat (1), the dustproof plate (34) seals the surface of the opening.

4. The machining tool for a compressor wheel of an automobile air conditioner according to claim 3, characterized in that, One end of the dustproof plate (34) is fixed with a positioning rod (35). When the L-shaped plate (32) completes clamping, the positioning rod (35) is simultaneously inserted into the insertion hole on the side of the disc base (22).

5. The machining tool for a compressor wheel of an automobile air conditioner according to claim 1, characterized in that, The locking blocks (23) on both sides of the disc base (22) are locked in the slot a inside the groove at the top of the tooling base (1).

6. The machining tool for a compressor wheel of an automobile air conditioner according to claim 2, characterized in that, The synchronous drive assembly (4) includes a motor (41) fixed on the fixture base (1). A large bevel gear (42) is installed on the top of the motor (41). Small bevel gears (43) mesh on the four sides of the large bevel gear (42). The small bevel gears (43) are rotatably installed on the side wall of the support plate fixed inside the fixture base (1). A lead screw (44) is connected to the inner wall of the fixture base (1). The lead screw (44) is rotatably connected to the slider (31). The lead screw (44) and the small bevel gears (43) share a rotating shaft for synchronous rotation.

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