An auxiliary tool for the scroll tail end of a moving scroll

Abstract

The utility model relates to dynamic vortex disc finishing technical field discloses a kind of auxiliary tool for dynamic vortex disc vortex tail end, including the negative pressure tool of dynamic vortex disc by negative pressure adsorption fixation, fixedly equipped with mounting seat on the negative pressure tool, the upper surface of the mounting seat is flush with the adsorption end upper surface of the negative pressure tool;Fixedly equipped with slide table air cylinder on the side of the mounting seat away from the negative pressure tool, the axial direction of the slide table air cylinder piston rod is directed to the center of the dynamic vortex disc, and telescopic cylinder for abutting the vortex tail end of the dynamic vortex disc is slidably arranged on the slide table air cylinder.The utility model can assist fixing dynamic vortex tail end, avoid when processing vortex tail end inner wall of dynamic vortex disc to produce vibration line, to improve the machining precision of dynamic vortex disc.

Description

Technical Field

[0001] This utility model relates to the field of precision machining technology for moving scroll disks, specifically an auxiliary tooling for the tail end of a moving scroll disk. Background Technology

[0002] The power heart of the thermal management system of new energy vehicles is the electric scroll compressor, and the core component of the electric scroll compressor is the moving scroll plate. The precision machining of the moving scroll plate is carried out by using a high-precision CNC machining center with the help of high-precision tooling, cutting tools and machining processes to complete the precision machining of the moving scroll plate so that it meets the superior performance of the electric compressor of new energy vehicles.

[0003] The existing moving scroll plate fixing fixture uses a negative pressure fixture. The negative pressure fixture is installed on the worktable, and the moving scroll plate is positioned on the suction end of the negative pressure fixture. By moving the compressed air reversing switch, the moving scroll plate is suctioned and fixed on the negative pressure fixture through negative pressure, thereby realizing the clamping and fixing of the moving scroll plate, which facilitates the next step of precision machining of the workpiece.

[0004] However, since the tail end of the moving scroll is a thin-walled structure, when machining the inner wall of the tail end, the cutting force applied by the tool to the tail end may be greater than the stiffness of the tail end of the moving scroll, causing thin-wall vibration. This results in grooves on the inner wall of the tail end, which affects the machining accuracy.

[0005] Therefore, there is an urgent need for an auxiliary tooling that can help fix the tail end of the moving scroll when machining the moving scroll, thereby improving the machining accuracy of the moving scroll. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary tooling for the tail end of a moving scroll plate to solve the problems mentioned in the background art, so as to avoid vibration marks during the machining of the moving scroll plate and improve machining accuracy.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An auxiliary fixture for the tail end of a moving scroll plate includes a negative pressure fixture for fixing the moving scroll plate by negative pressure adsorption. A mounting base is fixed on the negative pressure fixture, and the upper surface of the mounting base is flush with the upper surface of the adsorption end of the negative pressure fixture. A sliding cylinder is fixed on the side of the mounting base away from the negative pressure fixture. The piston rod of the sliding cylinder points axially towards the center of the moving scroll plate. A telescopic cylinder for abutting the tail end of the moving scroll plate is slidably disposed on the sliding cylinder.

[0008] As a further embodiment of this utility model: to ensure that the telescopic cylinder can be aligned with the height of the vortex tail end on the slide cylinder and provide stable support, the mounting base includes an L-shaped mounting plate and a connecting plate. The horizontal section of the L-shaped mounting plate is fixed on the negative pressure fixture base plate, and the connecting plate and the slide cylinder are fixedly connected on both sides of the vertical section. One end of the connecting plate is placed on the negative pressure fixture.

[0009] As a further embodiment of this utility model: in order to ensure stable contact between the connecting plate and the negative pressure fixture and to ensure that the axial direction of the piston rod of the slide cylinder always points to the center of the moving scroll plate, the end of the connecting plate near the negative pressure fixture is an arc-shaped end, and the arc surface of the arc-shaped end is configured to fit against the outer wall of the adsorption end of the negative pressure fixture.

[0010] As a further embodiment of this utility model: in order to reduce the weight of the connecting plate and prevent interference with the negative pressure tooling and cutting tool processing, an arc-shaped groove is provided at the top of the arc-shaped end of the connecting plate, and the arc of the arc-shaped groove is the same as the arc of the arc-shaped end of the connecting plate.

[0011] As a further embodiment of this utility model: to further reduce the weight of the connecting plate, an arc-shaped waist hole is provided in the arc-shaped groove, and the arc of the arc-shaped waist hole is the same as the arc of the arc end of the connecting plate.

[0012] As a further embodiment of this invention: to prevent the piston rod from damaging the surface of the scroll plate, an elastic buffer head is provided at the end of the piston rod of the telescopic cylinder.

[0013] As a further embodiment of this utility model: in order to enable the telescopic cylinder to move on the slide cylinder, a connecting block is fixedly provided on the side of the telescopic cylinder away from the moving scroll plate, and the connecting block is fixedly connected to the piston rod of the slide cylinder.

[0014] As a further embodiment of this utility model: in order to drive the telescopic cylinder to move forward when machining the inner side of the vortex tail end and to completely avoid the cutting tool when machining the outer side of the vortex tail end, the slide cylinder drives the telescopic cylinder to reciprocate along the axial direction of the slide cylinder piston rod through a solenoid valve.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model has a novel structure. When the piston rod of the telescopic cylinder is machining the inner side wall of the vortex tail end of the moving scroll plate, it can press against the outer side wall of the vortex tail end, thus avoiding vibration marks caused by vibration on the inner side wall of the vortex tail end during machining and improving machining accuracy. When machining the outer side wall of the vortex tail end, the telescopic cylinder can move backward on the slide cylinder, away from the moving scroll plate, to avoid interference with the machining of the tool. The elastic buffer head at the end of the piston rod can prevent the piston rod from damaging the moving scroll plate, and the limiting plate can prevent the piston rod from excessively squeezing the side wall of the vortex tail end.

[0016] The negative pressure fixture is a processing fixture used in the prior art for fixing and clamping moving scroll disk products. This application only uses it in this application and does not involve any improvement to its structure or working principle, so it will not be described here. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the structure of this utility model; In the diagram: 1-moving scroll plate, 2-negative pressure fixture, 3-mounting base, 31-L-shaped mounting plate, 32-connecting plate, 321-arc groove, 322-arc waist hole, 4-slide cylinder, 5-telescopic cylinder, 51-elastic buffer head, 52-connecting block. Detailed Implementation

[0018] 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.

[0019] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations.

[0020] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] Please see Figure 1-2In this embodiment of the present invention, an auxiliary tooling for the tail end of a moving scroll plate includes a negative pressure tooling 2, which is installed on a workbench and fixes the moving scroll plate 1 by negative pressure adsorption.

[0022] A mounting base 3 is fixedly connected to the negative pressure fixture 2. The mounting base 3 includes an L-shaped mounting plate 31 and a connecting plate 32. The connecting plate 32 is horizontally positioned, and the end of the connecting plate 32 closest to the negative pressure fixture 2 is an arc-shaped end. The curvature of this arc-shaped end is the same as the curvature of the outer wall of the suction end of the negative pressure fixture 2. This is used to fit the arc-shaped end of the connecting plate 32 against the outer wall of the suction end of the negative pressure fixture 2, thereby increasing the contact area between the connecting plate 32 and the negative pressure fixture 2 and thus increasing the stability of the mounting base 3. At the same time, it can also ensure that the piston rod of the slide cylinder 4 is axially aligned with the center of the moving scroll plate. An arc-shaped groove 321 is formed at the top of the arc-shaped end of the connecting plate 32, and an arc-shaped waist hole 322 is formed at the bottom of the arc-shaped groove 321. The curvature of both the arc-shaped groove 321 and the arc-shaped waist hole 322 is the same as the curvature of the arc-shaped end of the connecting plate 32. This is used to reduce the weight of the connecting plate 32 and to avoid interference with the cutting tool when machining the outer wall of the scroll plate.

[0023] The end of the connecting plate 32 away from the negative pressure fixture 2 is welded to the top of the vertical section of the L-shaped mounting plate 31. While supporting the connecting plate 32, it ensures that the upper surface of the connecting plate 32 is at the same level as the upper surface of the suction end of the negative pressure fixture 2, ensuring that the piston rod of the subsequent telescopic cylinder 5 and the vortex tail end of the moving vortex disk are at the same height. The top of the vertical section of the L-shaped mounting plate 31 away from the negative pressure fixture 2 is welded to the sliding cylinder 4. The telescopic cylinder 5 is slidably connected to the sliding cylinder 4. The axial direction of the piston rod of the sliding cylinder 4 points to the center of the moving vortex disk 1, so that the piston rod of the telescopic cylinder 5 can abut against the outer wall of the vortex tail end of the moving vortex disk 1 vertically, preventing the piston rod from deviating from the direction of force applied to the vortex tail end, which would cause unstable abutment. The horizontal section of the L-shaped mounting plate 31 is welded to the base plate of the negative pressure fixture 2, providing stable support for the mounting base 3.

[0024] An elastic buffer head 51 is fixedly provided at the end of the piston rod of the telescopic cylinder 5 to prevent damage to the outer wall of the vortex tail end when the piston rod of the telescopic cylinder 5 directly abuts against it. In this embodiment, the elastic buffer head 51 is specifically made of rubber. A connecting block 52 is welded and fixed to the side of the telescopic cylinder 5 away from the negative pressure fixture 2. One end of the connecting block 52 is fixed to the telescopic cylinder 5, and the other end extends vertically downward beyond the bottom of the telescopic cylinder 5 and is welded to the piston rod of the slide cylinder 4. Thus, when the solenoid valve drives the piston rod of the slide cylinder 4 to move, it can drive the telescopic cylinder 5 to reciprocate along the axial direction of the piston rod of the slide cylinder 4. In this embodiment, the telescopic cylinder 5 and the slide cylinder 4 are each controlled by a solenoid valve to move their respective piston rods. The solenoid valve controlling the slide cylinder 4 extends or retracts the piston rod of the slide cylinder 4, causing the telescopic cylinder 5 to reciprocate on the slide cylinder 4, thereby realizing the overall forward or backward movement of the telescopic cylinder 5. Due to the structural characteristics of the moving scroll disk 1, the tail end of the scroll is more prone to deformation when force is applied from the inside out than when force is applied from the outside in. When the cutting tool is machining the inner wall of the scroll tail end, the cutting force from the inside out is more likely to be greater than the structural stiffness of the scroll tail end. At this time, the scroll tail end will vibrate, which will cause vibration marks on the inner wall of the scroll tail end, affecting machining accuracy and product quality. However, when the cutting tool is machining the outer wall of the scroll tail end, the stiffness of the scroll tail end is sufficient to ensure that it does not deform. Therefore, the problem of vibration marks generated by the moving scroll disk 1 during machining is considered more in the case of the cutting tool machining the inner wall of the scroll tail end.

[0025] This utility model has a novel structure and stable operation. In use, after the arc-shaped groove 321 of the connecting plate 32 is attached to the outer wall of the suction end of the negative pressure fixture 2, the mounting base 3 of the auxiliary fixture is welded and fixed to the base plate of the negative pressure fixture 2. The moving vortex disk 1 is then suction-fixed onto the negative pressure fixture 2. The direction of the moving vortex disk 1 is adjusted so that the tail end of the vortex is opposite to the piston rod of the telescopic cylinder 5. When the tool is ready to process the inner wall of the vortex tail end, the piston rod of the slide cylinder 4 is retracted via the solenoid valve, causing the telescopic cylinder 5 to move forward as a whole on the slide cylinder 4. Simultaneously, the telescopic control valve is activated. The solenoid valve of cylinder 5 causes the piston rod of telescopic cylinder 5 to extend, so that the elastic buffer head 51 abuts against the outer wall of the vortex tail end. After the tool has completed the machining of the inner wall of the vortex tail end, when it is ready to machine the outer wall of the vortex tail end, the solenoid valve is activated to drive the piston rod of the slide cylinder 4 to extend, which drives the telescopic cylinder 5 to retract as a whole on the slide cylinder 4. At the same time, the solenoid valve controlling the telescopic cylinder 5 is activated to retract the piston rod of the telescopic cylinder 5, so that the telescopic cylinder 5 is moved away from the moving vortex disk 1 to avoid the tool and prevent interference with the tool during the machining process, effectively ensuring the machining accuracy and quality of the vortex tail end of the moving vortex disk 1.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0027] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An auxiliary tooling for the tail end of a moving scroll disk, comprising a negative pressure tooling (2) for fixing the moving scroll disk (1) by negative pressure adsorption, characterized in that: The negative pressure fixture (2) is fixedly provided with a mounting base (3), the upper surface of the mounting base (3) is flush with the upper surface of the adsorption end of the negative pressure fixture (2); a sliding cylinder (4) is fixedly provided on the side of the mounting base (3) away from the negative pressure fixture (2), the piston rod of the sliding cylinder (4) is axially directed towards the center of the moving vortex disk (1), and a telescopic cylinder (5) for abutting the tail end of the vortex disk (1) is slidably provided on the sliding cylinder (4).

2. The auxiliary tooling according to claim 1, characterized in that: The mounting base (3) includes an L-shaped mounting plate (31) and a connecting plate (32). The horizontal section of the L-shaped mounting plate (31) is fixed on the bottom plate of the negative pressure fixture (2), and the vertical section is fixedly connected to the connecting plate (32) and the slide cylinder (4) on both sides respectively. One end of the connecting plate (32) is placed on the negative pressure fixture (2).

3. The auxiliary tooling according to claim 2, characterized in that: The end of the connecting plate (32) near the negative pressure fixture (2) is an arc-shaped end, and the arc surface of the arc-shaped end is configured to fit the outer wall of the adsorption end of the negative pressure fixture (2).

4. The auxiliary tooling according to claim 3, characterized in that: The top of the arc end of the connecting plate (32) is provided with an arc groove (321), and the arc of the arc groove (321) is the same as the arc of the arc end of the connecting plate (32).

5. The auxiliary tooling according to claim 4, characterized in that: An arc-shaped waist hole (322) is provided in the arc-shaped groove (321), and the arc of the arc-shaped waist hole (322) is the same as the arc of the arc end of the connecting plate (32).

6. The auxiliary tooling according to claim 1, characterized in that: The piston rod end of the telescopic cylinder (5) is provided with an elastic buffer head (51).

7. The auxiliary tooling according to claim 1, characterized in that: A connecting block (52) is fixedly provided on the side of the telescopic cylinder (5) away from the moving scroll plate (1), and the connecting block is fixedly connected to the piston rod of the slide cylinder (4).

8. The auxiliary tooling according to claim 1, characterized in that: The slide cylinder (4) drives the telescopic cylinder (5) to reciprocate along the axial direction of the piston rod of the slide cylinder (4) via a solenoid valve.

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