Moving scroll plate finish machining tool

Abstract

The utility model relates to the technical field of orbiting scroll plate machining, in particular to an orbiting scroll plate finish machining tool which sequentially comprises a bottom plate, a shell and a positioning block from bottom to top, and a jacking mechanism is arranged in an inner cavity of the shell. The jacking mechanism sequentially comprises an expansion sleeve used for fixing a part, a diaphragm disc body used for driving the expansion sleeve to be opened and a piston used for jacking out the diaphragm disc body from top to bottom. A vent hole used for driving the piston to move is formed in one side of the shell. When in use, the jacking mechanism is arranged in the inner cavity of the shell and comprises the expansion sleeve, the diaphragm disc body and the piston, the piston is driven by the vent hole to move, so that the piston ejects out of the diaphragm disc body, and after the diaphragm disc body is ejected out, the expansion sleeve deforms, so that the expansion sleeve is opened, and a part is fixed; and the situation that the part is deformed when the three-jaw chuck is used for clamping is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of movable scroll processing, in particular to a movable scroll finishing tool. Background Art

[0002] When exploring the fine machining technology for scroll compressor scrolls, particularly the efficient and precise machining of the orbiting scroll, the limitations and challenges of traditional fixtures and tooling cannot be ignored. As a core component in refrigeration and air conditioning systems, the performance of scroll compressors directly determines the energy efficiency and reliability of the entire system. The precise coordination between the orbiting and fixed scrolls is crucial for achieving efficient compression.

[0003] Traditionally, the orbiting scroll is mostly machined using a three-jaw chuck for external clamping. Although this method is easy to operate, it has significant drawbacks:

[0004] First, excessive manual intervention: During the processing, the operator needs to manually press the static scroll disk to ensure accurate positioning, which not only increases labor intensity but is also easily affected by human factors, resulting in unstable clamping accuracy;

[0005] Second, it is difficult to identify the clamping direction: the orbiting scroll has a specific assembly direction. Manually identifying and adjusting the clamping direction is not only inefficient but also prone to errors, affecting the subsequent processing accuracy.

[0006] Third, the problem of clamping deformation: the clamping of the outer circle by the three-jaw chuck often leads to local stress concentration, causing the scroll disk to deform. Especially in situations where high precision is required, this deformation will significantly reduce the quality and performance of the workpiece.

[0007] In view of this, we propose a fine machining tool for the movable scroll. Utility Model Content

[0008] The purpose of the present utility model is to provide a movable scroll finishing tool to solve the problems raised in the above background technology.

[0009] To achieve the above objectives, the present invention provides the following technical solutions:

[0010] A movable scroll plate finishing tool comprises, from bottom to top, a base plate, a shell fixed to the base plate, and a positioning block fixed to the shell; the inner cavity of the shell is provided with a lifting mechanism, and the lifting mechanism comprises, from top to bottom, an expansion sleeve for fixing parts, a diaphragm disc for driving the expansion sleeve to open, and a piston for ejecting the diaphragm disc; a vent hole for driving the piston to move is provided on one side of the shell.

[0011] As a further solution of the present invention: the diaphragm disc body includes a plurality of elastic diaphragms, and the expansion sleeve includes a plurality of moving blocks with the center of the piston as the center of the circle, wherein the elastic diaphragms are pushed out by the piston to cause the moving blocks to move from the inside to the outside.

[0012] As a further solution of the present invention: the positioning block is provided with a convex ring on the side away from the shell with the through groove as the center, and a groove is provided at the bottom of the part, which is sleeved on the convex ring to position the part.

[0013] As a further solution of the present invention: a through slot is provided at the center of the positioning block, and one end of the expansion sleeve passes through the through slot and is movably connected to the part.

[0014] As a further solution of the present invention: a convex block is provided on the top of the moving block of the expansion sleeve, the height of the positioning block convex ring is A, the depth of the part groove is B, the height of the moving block convex block is C, and A, B, and C satisfy C>BA.

[0015] As a further solution of the present invention: the diaphragm disc body also includes a fixing ring, which is installed between the shell and the positioning block. The positioning block, the fixing ring and the shell are all provided with screw holes for bolt fixing.

[0016] As a further solution of the present invention: the vent hole is externally connected to an air pressure valve; the piston includes a guide column and a movable plate, and the guide column and the movable plate are slidingly connected; wherein the air pressure valve controls the moving direction of the guide column driven by the movable plate by changing the inlet and outlet directions of the vent hole.

[0017] As a further solution of the present invention: the bottom plate, shell, positioning block and parts enclose a negative pressure cavity, one side of the negative pressure cavity is connected to a negative pressure pipe, and the outer end of the negative pressure pipe is provided with a negative pressure pump.

[0018] As a further solution of the present invention: the bottom plate is provided with a limiting mechanism, the limiting mechanism includes a rotary cylinder, and the output end of the rotary cylinder is fixed with an anti-error plate arranged above the positioning block.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the movable scroll finishing tooling, a limiting mechanism is provided on the bottom plate, and the limiting mechanism is used to correct and fix the installation direction of the parts, thereby preventing the parts from being misplaced.

[0021] 2. In the movable scroll finishing tooling, a lifting mechanism is set in the inner cavity of the shell, and the lifting mechanism is adjusted using the vent hole to fix the parts, thereby avoiding deformation of the parts when clamped by a three-jaw chuck.

[0022] 3. In the movable scroll finishing tooling, a negative pressure pipe connected to the shell is set on the bottom plate. The parts are placed on the positioning block. The negative pressure pipe generates negative pressure in the shell, thereby sucking the parts tightly. The lifting mechanism is used to ensure that the parts are fixed with sufficient clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the main view of the overall structure of this scheme;

[0024] Figure 2 This is the overall structure diagram of this plan;

[0025] Figure 3 This is a cross-sectional view of the overall structure of this scheme;

[0026] Figure 4 This is the relationship diagram of the parts, positioning blocks and expansion sleeves in this solution.

[0027] The meaning of each number in the figure is:

[0028] 100, bottom plate; 101, negative pressure pipe; 110, shell; 111, vent; 200, lifting mechanism; 201, piston; 202, diaphragm disc; 203, expansion sleeve; 300, positioning block; 400, limiting mechanism; 401, rotary cylinder; 402, anti-error plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] At present, when clamping the movable scroll, a three-jaw chuck is used to clamp the outer circle. During this process, not only does the worker need to press the fixed scroll with his hands, but he also needs to manually identify the clamping direction. The three-jaw clamping of the movable scroll may cause the movable scroll to be clamped and deformed, thereby reducing the quality of the workpiece.

[0032] Therefore, see Figure 1 and Figure 2As shown, the present embodiment aims to provide a fine machining tool for an orbiting scroll, which comprises, from bottom to top, a base plate 100, a housing 110, and a positioning block 300 for positioning parts. Considering that manual identification of the clamping direction is troublesome and the orbiting scroll itself is spiral-shaped, a limiting mechanism 400 is fixedly provided on the base plate 100. The limiting mechanism 400 is used to limit the position of the parts, making it convenient for workers to place the tail end of the orbiting scroll directly against one side of the limiting mechanism 400, thereby directly identifying the clamping direction.

[0033] Taking into account that the parts placed on the surface of the positioning block 300 are not stable, the stabilization effect of the parts needs to be strengthened. Therefore, a lifting mechanism 200 is provided in the inner cavity of the shell 110, and a vent 111 is provided on the surface of the shell 110 for driving the lifting mechanism 200 to fix the parts. The vent 111 is vertically arranged, and there are two of them. The air flow directions of the two air holes 111 are opposite. According to the relative positions of the two air holes 111, they are respectively called the upper air hole 111 and the lower air hole 111. By changing the air inlet and outlet directions of the air hole 111, the lifting mechanism 200 can fix the parts; at the same time, a negative pressure pipe 101 connected to the shell 110 is provided on the side of the base plate 100 installed perpendicular to the shell 110, and the parts are fixed on the surface of the positioning block 300 by utilizing the negative pressure suction generated by the negative pressure pipe 101.

[0034] The improvements of this embodiment are as follows: by arranging a limiting mechanism 400 on the base plate 100, the limiting mechanism 400 is used to correct and fix the installation direction of the parts, thereby avoiding the parts from being placed incorrectly; by arranging a lifting mechanism 200 in the inner cavity of the shell 110, the vent hole 111 is used to adjust the lifting mechanism 200, so that the lifting mechanism 200 fixes the parts, thereby avoiding the parts from being deformed when clamped by a three-jaw chuck; by arranging a negative pressure pipe 101 connected to the shell 110 on the base plate 100, the parts are placed on the positioning block 300, and the shell 110 generates negative pressure through the negative pressure pipe 101, thereby sucking the parts tightly, cooperating with the lifting mechanism 200 to ensure that the parts are fixed with sufficient clamping force.

[0035] The lifting mechanism 200 is further described as follows: the lifting mechanism 200 is provided with an expansion sleeve 203, a diaphragm plate 202, and a piston 201 from top to bottom; the diaphragm plate 202 includes a plurality of elastic diaphragms, and the expansion sleeve 203 includes a plurality of movable blocks with the center of the piston 201 as the center of the circle;

[0036] like Figure 3As shown, the specific movement process of the lifting mechanism 200 is as follows: the air vent 111 is externally connected to an air pressure valve, and the piston 201 includes a guide column and a movable plate, and the guide column and the movable plate are slidably connected; when the lower air vent 111 is allowed to enter through the air pressure valve and the upper air vent 111 is allowed to exhaust, the movable plate moves upward, driving the guide column to move upward synchronously, so that the piston 201 is pushed up by the air pressure to push the elastic diaphragm of the diaphragm plate 202 upward, and the elastic diaphragm is pushed out by the piston 201, so that the moving block of the expansion sleeve 203 moves from the inside to the outside, so that the moving block squeezes and supports the part; when the lower air vent 111 is exhausted through the air pressure valve and the upper air vent 111 is allowed to enter, the piston 201 is reset by the air pressure and gravity, the elastic diaphragm is reset by its own elasticity, and the moving block contracts inward by its own gravity;

[0037] In order to facilitate the expansion sleeve 203 to pass through the positioning block 300 to fix the part, a through slot is provided at the center of the positioning block 300, and the expansion sleeve 203 passes through the through slot to be movably connected to one side of the part;

[0038] The positioning block 300 is provided with a convex ring on the side away from the housing 110 with the through groove as the center, and a groove is provided at the bottom of the part. The groove is sleeved on the convex ring to position the part. A protrusion is provided on the top of the moving block of the expansion sleeve 203. Considering that the convex ring of the positioning block 300 may be too large or the groove of the part may be too small, the protrusion of the moving block of the expansion sleeve 203 may not be able to fully contact the groove of the part, thereby causing the expansion sleeve 203 to be unable to fix the part. Therefore, the convex ring of the positioning block 300, the part groove and the protrusion of the moving block are defined, such as Figure 4 As shown, if the height of the convex ring of the positioning block 300 is set to A, the depth of the part groove is set to B, and the height of the convex block of the moving block is set to C, then the relationship between A, B, and C is C>BA;

[0039] Considering the overall stability of the device, the diaphragm disc 202 also includes a fixing ring, which is installed between the housing 110 and the positioning block 300. The positioning block 300, the fixing ring and the housing 110 are all provided with screw holes for bolt fixing. At the same time, the base plate 100 and the housing 110 are also fixed by bolts.

[0040] Furthermore, the invention discloses that the parts are fixed on the surface of the positioning block 300 by using the negative pressure suction force generated by the negative pressure tube 101: the base plate 100, the housing 110, the positioning block 300 and the parts enclose a negative pressure cavity, the negative pressure tube 101 is connected to the negative pressure cavity, and the negative pressure tube 101 is externally connected to a negative pressure pump. When the negative pressure pump is started, the negative pressure pump extracts the gas in the negative pressure cavity through the negative pressure tube 101, thereby forming a pressure difference, so that the parts are sucked and fixed;

[0041] Furthermore, the structure of the limiting mechanism 400 is disclosed: the limiting mechanism 400 includes a rotating cylinder 401, and the output end of the rotating cylinder 401 is fixed with an anti-error plate 402 arranged above the positioning block 300. When the rotating cylinder 401 is started, the rotating cylinder 401 drives the anti-error plate 402 to rotate to a preset position. The height of the preset position is set according to the size of the part and the pre-installed position of the part, and is not limited in this embodiment. At this time, the staff will rotate the part placed on the surface of the positioning block 300 so that the tail end of the part contacts the anti-error plate 402, thereby determining the clamping direction.

[0042] In summary, the working principle of this solution is as follows:

[0043] Align the groove of the part with the convex ring of the positioning block 300, start the rotating cylinder 401, and the rotating cylinder 401 drives the anti-error plate 402 to rotate to the preset position. The staff rotates the part so that the tail end of the part contacts the anti-error plate 402, thereby determining the clamping direction, and then starts the air pressure valve to allow air to enter the lower vent 111 and exhaust the air from the upper vent 111. At this time, the piston 201 is pushed upward by the air pressure to push the elastic diaphragm of the diaphragm plate 202. After the elastic diaphragm is pushed out by the piston 201, the moving block of the expansion sleeve 203 moves from the inside to the outside, so that the moving block squeezes and presses the part; start Start the negative pressure pump, which extracts the gas in the negative pressure chamber through the negative pressure pipe 101, thereby forming a pressure difference, so that the parts are sucked and fixed; when the parts are processed, start the negative pressure pump to restore the air pressure in the negative pressure chamber, start the air pressure valve, exhaust the air from the lower air vent 111, and let air in from the upper air vent 111. At this time, the piston 201 is reset by the influence of air pressure and gravity, the elastic diaphragm is reset by its own elastic factors, and the moving block contracts inwards due to its own gravity, thereby releasing the fixation of the parts, start the rotating cylinder 401, reset the anti-error plate 402, and remove the processed parts.

[0044] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0045] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A movable scroll finishing tool, comprising, from bottom to top, a base plate (100), a housing (110) fixed to the base plate (100), and a positioning block (300) fixed to the housing (110), characterized in that: The inner cavity of the housing (110) is provided with a lifting mechanism (200), and the lifting mechanism (200) comprises, from top to bottom, an expansion sleeve (203) for fixing parts, a diaphragm disc (202) for driving the expansion sleeve (203) to open, and a piston (201) for ejecting the diaphragm disc (202); a vent hole (111) for driving the piston (201) to move is provided on one side of the housing (110).

2. The movable scroll finishing tool according to claim 1, characterized in that: The diaphragm disc (202) includes a plurality of elastic diaphragms, and the expansion sleeve (203) includes a plurality of moving blocks with the center of the piston (201) as the center of the circle, wherein the elastic diaphragms are pushed out by the piston (201) to cause the moving blocks to move from the inside to the outside.

3. The movable scroll finishing tool according to claim 1, characterized in that: The positioning block (300) is provided with a convex ring on a side away from the housing (110) with the through groove as the center of the circle, and a groove is provided at the bottom of the part, and the groove is sleeved on the convex ring to position the part.

4. The movable scroll finishing tool according to claim 1, characterized in that: A through slot is provided at the center of the positioning block (300), and one end of the expansion sleeve (203) passes through the through slot and is movably connected to the part.

5. The movable scroll finishing tool according to claim 1, characterized in that: The top of the moving block of the expansion sleeve (203) is provided with a convex block, the height of the convex ring of the positioning block (300) is A, the depth of the part groove is B, the height of the moving block convex block is C, and A, B, and C satisfy C>BA.

6. The movable scroll finishing tool according to claim 1, characterized in that: The diaphragm disc (202) further comprises a fixing ring, which is installed between the housing (110) and the positioning block (300). The positioning block (300), the fixing ring and the housing (110) are all provided with screw holes for bolt fixing.

7. The movable scroll finishing tool according to claim 1, characterized in that: The vent hole (111) is externally connected to an air pressure valve; the piston (201) includes a guide column and a movable plate, and the guide column and the movable plate are slidably connected; wherein the air pressure valve controls the moving direction of the guide column driven by the movable plate by changing the air inlet and outlet directions of the vent hole (111).

8. The movable scroll finishing tool according to claim 1, characterized in that: The bottom plate (100), the housing (110), the positioning block (300) and the parts enclose a negative pressure cavity, one side of the negative pressure cavity is connected to a negative pressure pipe (101), and a negative pressure pump is provided at the outer end of the negative pressure pipe (101).

9. The movable scroll finishing tool according to claim 1, characterized in that: The bottom plate (100) is provided with a limiting mechanism (400), and the limiting mechanism (400) comprises a rotary cylinder (401), and an anti-error plate (402) provided above the positioning block (300) is fixed to the output end of the rotary cylinder (401).

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