Clamp for processing compressor static rotating disk

Abstract

The utility model relates to a kind of clamps for compressor static scroll machining, including bottom plate, telescopic mechanism and arc clamping part, the upper end of the bottom plate is provided with a storage board, multiple support columns are provided between the storage board and bottom plate, telescopic mechanism is set on bottom plate upper end, the movable end of telescopic mechanism is provided with a connecting rod, the connecting rod includes at least two opposite free ends;At least two opposite sides of the storage board are respectively provided with a slot, the slot is respectively hinged with a swing arm by pin rod;The utility model is cooperated by bottom plate, telescopic mechanism and swing arm connecting rod mechanism, so that the same set of clamp can be adapted to different outer diameter static scroll within telescopic stroke, and the whole does not need to be replaced when changing type;Swing arm is synchronously driven by connecting rod, drives arc clamping part to uniformly hold workpiece from at least two opposite directions, and clamping force is distributed symmetrically and stably, significantly suppresses high-speed cutting vibration, guarantees scroll tooth machining precision and end surface parallelism.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a fixture for machining the stationary rotating disc of a compressor. Background Technology

[0002] Scroll compressors are widely used in refrigeration, air conditioning, and heat pump systems for new energy vehicles due to their compact structure, stable operation, and high efficiency. As one of the core components, the stationary scroll plate's machining accuracy directly determines the compressor's sealing performance and service life. Currently, the stationary scroll plate is typically made by die-casting aluminum alloy and then machining to finish the scroll teeth, end faces, and mounting holes. During this process, specialized fixtures must be used to reliably position and clamp the stationary scroll plate to ensure that the workpiece does not shift or deform under cutting forces.

[0003] However, existing fixtures generally suffer from poor model adaptability, leading to frequent fixture changes and long preparation times in the early stages of machining. In addition, most existing fixtures use single-point clamping on the outer circle, which can easily result in uneven distribution of clamping force. Vibrations generated during machining can cause chatter marks on the sidewalls of the volute teeth, affecting the sealing performance of subsequent assembly. Utility Model Content

[0004] To address the issues of poor model adaptability and insufficient clamping stability of existing static scroll plate clamps, the purpose of this utility model is to provide a clamp for machining compressor static scroll plates that is compatible with various models of static scroll plates, provides stable and reliable clamping, and offers high positioning accuracy.

[0005] The technical solution is as follows: A fixture for machining a compressor stationary rotary disk includes a base plate, a telescopic mechanism, and an arc-shaped clamping member. A shelf is provided on the upper end of the base plate, and multiple support columns are provided between the shelf and the base plate. The telescopic mechanism is located on the upper end of the base plate, and a connecting rod is provided on the movable end of the telescopic mechanism. The connecting rod includes at least two opposite free ends. A slotted hole is provided on at least two opposite sides of the shelf. A swing arm is hinged to each slotted hole by a pin. The position of the swing arm corresponds to the free end of the connecting rod. The lower end of the swing arm is hinged to one of the free ends of the connecting rod. The upper end of the swing arm extends to the upper side of the slotted hole and is connected to an arc-shaped clamping member.

[0006] As an improvement to the above solution, the connecting rod has four free ends, and the four free ends are opposite to each other in pairs. There are four slotted holes, and the four slotted holes are opposite to each other in pairs.

[0007] As an improvement to the above solution, the upper end of the swing arm is provided with a hinge hole, a pin is horizontally arranged in the hinge hole, a connecting block is formed on the back side of the arc-shaped clamping member, the connecting block extends into the hinge hole and connects with the pin, and the hinge hole restricts the hinge block to swing within an angle range of ±15°.

[0008] As an improvement to the above solution, a supporting cone is provided at the upper center of the shelf.

[0009] As an improvement to the above solution, the inner side of the arc-shaped clamp is provided with anti-slip texture.

[0010] As an improvement to the above solution, the telescopic mechanism is a cylinder.

[0011] This utility model has the following advantages:

[0012] 1. This utility model, through the coordination of the base plate, the telescopic mechanism and the swing arm linkage mechanism, enables the same set of fixtures to adapt to static scrolls of different outer diameters within the telescopic stroke, without the need for overall replacement when changing models; the swing arm is synchronously driven by the linkage, causing the arc-shaped clamping component to uniformly clamp the workpiece from at least two opposite directions, with symmetrical and stable clamping force distribution, significantly suppressing high-speed cutting vibration, and ensuring the machining accuracy and end face parallelism of the scroll teeth.

[0013] 2. This utility model uses four sets of symmetrically arranged connecting rods and slotted holes to enable the arc-shaped clamping component to apply force evenly from four directions simultaneously, resulting in a more stable clamping, further suppressing cutting vibration, and improving the machining stability of large-diameter static vortex disks.

[0014] 3. The pin hinge structure of this utility model allows the arc-shaped clamping part to swing adaptively within ±15°, which can fit the outer circle of different sizes, reduce positioning error and improve clamping reliability.

[0015] 4. The supporting cone of this utility model serves as the central reference, enabling rapid centering and auxiliary support, significantly shortening the clamping time and enhancing the rigidity of the workpiece.

[0016] 5. This utility model utilizes anti-slip texture to increase friction, prevent workpiece slippage during high-speed cutting, and ensure repeatability positioning accuracy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the telescopic mechanism, arc-shaped clamping component, connecting rod, and swing arm of this utility model.

[0019] Figure 3 This is a schematic diagram of the arc-shaped clamping component of this utility model.

[0020] The following are the labels in the diagram: 1. Base plate, 2. Telescopic mechanism, 3. Arc-shaped clamping part, 31. Connecting block, 32. Anti-slip texture, 4. Shelf, 41. Straight hole, 5. Support column, 6. Connecting rod, 61. Free end, 62. Angled hole, 7. Swing arm, 71. Hinge hole, 72. Pin, 8. Pin rod, 9. Support cone. Detailed Implementation

[0021] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0022] A fixture for machining the stationary rotating disk of a compressor, such as Figure 1-3 As shown, the base plate 1 is coaxially supported by four support columns 5 to support the placement plate 4, forming a rigid frame between them; the telescopic mechanism 2 is a cylinder and is vertically fixed to the upper end of the base plate 1, and the piston rod is fixed to the top of the connecting rod 6. The connecting rod 6 extends outward to at least two free ends 61. Specifically, in this embodiment, there are four free ends 61, and the connecting rod 6 has a cross-shaped symmetrical structure. The shelf 4 has four pairs of opposite slotted holes 41. Each slotted hole 41 is hinged to a swing arm 7 by a pin 8. The lower end of the swing arm 7 is hinged to the corresponding free end 61. Specifically, in this embodiment, the lower end of the swing arm 7 has an oblique hole 62. A pin is inserted into the oblique hole 62 and is hinged to the lower end of the swing arm 7. The upper end of the swing arm 7 extends out of the slotted hole 41 and is hinged to the arc-shaped clamping member 3 by the pin 72. More specifically, the upper end of the swing arm 7 has a hinge hole 71. A pin 72 is horizontally arranged in the hinge hole 71. A connecting block 31 is formed on the back side of the arc-shaped clamping member 3. The connecting block 31 extends into the hinge hole 71 and is connected to the pin 72. The hinge hole 71 limits the swing amplitude of the connecting block 31 to within ±15°.

[0023] The cylinder's extension and retraction synchronously drive the four swing arms 7 via connecting rod 6, causing the four arc-shaped clamping parts 3 to simultaneously retract or open. This achieves uniform four-way clamping of static scrolls with different outer diameters, resulting in a symmetrical distribution of clamping force and significantly suppressing high-speed cutting vibration. Furthermore, the inner side of the arc-shaped clamping parts 3 is machined with anti-slip textures 32 to increase contact friction, prevent workpiece slippage, and ensure repeatability. A supporting cone 9 is coaxially positioned at the center of the placement plate 4. When the workpiece is placed, the supporting cone 9 automatically completes center positioning and provides auxiliary support, shortening alignment time and enhancing rigidity. The entire fixture can cover the production of multiple models without replacing any parts, combining the advantages of flexibility, high efficiency, and high precision.

[0024] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A fixture for machining the stationary rotating disk of a compressor, characterized in that, The device includes a base plate (1), a telescopic mechanism (2), and an arc-shaped clamping member (3). A shelf (4) is provided on the upper end of the base plate (1). Multiple support columns (5) are provided between the shelf (4) and the base plate (1). The telescopic mechanism (2) is located on the upper end of the base plate (1). A connecting rod (6) is provided on the movable end of the telescopic mechanism (2). The connecting rod (6) includes at least two opposite free ends (61). A slotted hole (41) is opened on at least two opposite sides of the shelf (4). A swing arm (7) is hinged to the slotted hole (41) by a pin (8). The swing arm (7) is positioned corresponding to the free end (61) of the connecting rod (6). The lower end of the swing arm (7) is hinged to one of the free ends (61) of the connecting rod (6). The upper end of the swing arm (7) extends to the upper side of the slotted hole (41) and is connected to an arc-shaped clamping member (3).

2. The fixture for machining the compressor stationary rotary disk as described in claim 1, characterized in that, The connecting rod (6) has four free ends (61), and the four free ends (61) are opposite each other in pairs. The four slotted holes (41) are also opposite each other in pairs.

3. The fixture for machining the compressor stationary rotary disk as described in claim 1, characterized in that, The upper end of the swing arm (7) is provided with a hinge hole (71), and a pin (72) is horizontally arranged in the hinge hole (71). A connecting block (31) is formed on the back side of the arc-shaped clamp (3). The connecting block (31) extends into the hinge hole (71) and is connected to the pin (72). The hinge hole (71) restricts the hinge block to swing within an angle range of ±15°.

4. The fixture for machining the stationary rotary disk of a compressor as described in any one of claims 1-3, characterized in that, A supporting cone (9) is provided at the center of the upper end of the shelf (4).

5. The fixture for machining the compressor stationary rotary disk as described in claim 4, characterized in that, The inner side of the arc-shaped clamp (3) is provided with anti-slip texture (32).

6. The fixture for machining the compressor stationary rotary disk as described in claim 5, characterized in that, The telescopic mechanism (2) is a cylinder.

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