Dotting tool for outer circle of cylinder cover of air conditioner compressor and implementation method of dotting tool

Abstract

The invention discloses an air conditioner compressor cylinder cover outer circle dotting tool and an implementation method thereof, and belongs to the technical field of cylinder cover tool clamps. According to the air conditioner compressor cylinder cover outer circle dotting tool and the implementation method thereof, the air conditioner compressor cylinder cover outer circle dotting tool comprises a cylinder cover body and further comprises a base, the base is located below the cylinder cover body, a rhombic positioning pin and a mistake-proof pin are arranged on the base, a side hole is formed in the side face of the base, a first threaded wall and a counter bore are arranged in the base, and a plug pin is arranged below the base. In order to solve the problems of lower processing efficiency and larger processing size deviation during dotting of the cylinder cover body, the coaxiality of the turntable and the base during rotation is ensured to be within a standard range through the excessive matching of the bolt and the groove, and meanwhile, the coaxiality of the cylinder cover body and the base is ensured to be within the standard range by arranging the center hole pin between the cylinder cover body and the base. Therefore, after the rotary table drives the cylinder cover body to rotate, the pre-punching size stability is guaranteed when dotting operation is conducted on the cylinder cover body.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder head fixtures, and in particular to an air-conditioning compressor cylinder head outer circle dotting fixture and an implementation method thereof. Background Art

[0002] The air-conditioning compressor cylinder head is one of the key components of the air-conditioning compressor, which mainly plays the role of sealing and supporting. The cylinder head is usually made of high-strength materials, such as aluminum alloy or cast iron, to ensure its durability and sealing. The modern air-conditioning compressor cylinder head design usually includes arc-shaped wear-resistant plates, positioning holes, concave grooves and other structures to enhance its durability and facilitate assembly and maintenance. The manufacture of air-conditioning compressor cylinder heads requires a variety of machining technologies such as precise turning, milling and grinding. These machining processes require high-precision and high-quality control to ensure that the size and shape of the cylinder head meet strict industrial standards.

[0003] The existing cylinder head body pre-punching size requirements are not high, and a fixture with a small step and low coaxiality can also meet the needs. However, the new style of pre-punching cannot ensure the dimensional stability through the original fixture. At the same time, the original tooling fixture cannot adapt to various types of cylinder head bodies. There are problems such as low processing efficiency and large processing size deviation when dotting the cylinder head body. Therefore, it does not meet the existing needs. In this regard, the present application proposes an air-conditioning compressor cylinder head outer circle dotting tool and its implementation method. Summary of the invention

[0004] The purpose of the present invention is to provide an air-conditioning compressor cylinder head outer circle dotting tool and an implementation method thereof. By arranging a pin under the base and a groove in the middle of the turntable, the pin and the groove are over-fitted, thereby ensuring that the coaxiality of the turntable with the base is within the specification when it rotates. At the same time, a center hole pin is arranged between the cylinder head body and the base to ensure that the coaxiality of the cylinder head body and the base is within the specification, thereby improving the dimensional stability during processing and solving the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air-conditioning compressor cylinder head outer circle dotting tool, comprising a cylinder head body and a base, wherein the base is located below the cylinder head body, a turntable is arranged below the base, a limiting groove is arranged in the middle of the base, a diamond-shaped positioning pin and an anti-misalignment pin are arranged on the top of the base, a side hole is arranged on the side of the base, a first threaded wall and a countersunk hole are arranged inside the base, a latch is arranged below the base, a through hole is arranged inside the cylinder head body, a center hole pin is arranged inside the through hole, and a pad is arranged between the cylinder head body and the turntable.

[0006] Preferably, a groove is provided in the middle of the turntable, the lower end of the pin passes through the pad and extends downward to the inside of the groove, the pin is over-fitted with the groove, a second threaded wall is provided inside the turntable, a second screw is provided inside the countersunk hole, and the lower end of the second screw passes through the base and the pad in sequence and extends to the inside of the second threaded wall.

[0007] Preferably, a limiting ring is provided at the lower end of the center hole pin, and a fixing block is provided at the lower end of the limiting ring. The fixing block is located inside the limiting groove, and a first screw is provided inside the side hole. A contact is provided at one end of the first screw, and the contact extends to the inside of the limiting groove, and the contact contacts the fixing block.

[0008] Preferably, an equal-height block is provided between the cylinder head body and the base, a threaded column is provided below the equal-height block, the equal-height block is connected to the threaded column, and the threaded column is located inside the first threaded wall.

[0009] Preferably, the lower ends of the diamond locating pin and the anti-error pin are connected to the base, the upper end of the diamond locating pin is provided with a diamond block, the diamond block is embedded in the interior of the cylinder head body, and the upper end of the anti-error pin is provided with an anti-error block, which is embedded in the interior of the cylinder head body.

[0010] A method for marking the outer circle of an air-conditioning compressor cylinder head is implemented based on an air-conditioning compressor cylinder head outer circle marking tool, comprising the following steps:

[0011] Step 1: First place the pad on the turntable, then insert the pin into the groove, and finally use the second screw to connect the base, pad and turntable into a whole;

[0012] Step 2: Select the anti-error pin and center hole pin corresponding to the cylinder head body, as well as the equal height block with suitable height;

[0013] Step 3: Connect the anti-error pin, diamond locating pin, center hole pin and equal height block to the base, and then place the cylinder head body on the equal height block. At this time, the anti-error pin and diamond locating pin are embedded under the cylinder head body, and the center hole pin is located inside the through hole;

[0014] Step 4: Place the three first screws inside the three side holes respectively. Move the contacts along the side holes to the inside of the limit slots. The three contacts contact the fixed blocks from three directions respectively, so that the position of the center hole pin is fixed. Now you can start the dotting operation.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention arranges a latch under the base and a groove in the middle of the turntable. The latch and the groove are over-fitted, thereby ensuring that the coaxiality of the turntable with the base is within the specification when the turntable rotates. At the same time, a center hole pin is arranged between the cylinder head body and the base. The lower end of the center hole pin is fixed on the base, and the upper end of the center hole pin is located inside the through hole, thereby ensuring that the coaxiality of the cylinder head body and the base is within the specification, thereby ensuring the stability of the pre-punched size when the cylinder head body is punched after the turntable drives the cylinder head body to rotate.

[0017] 2. The present invention uses a center hole pin, a diamond locating pin and an anti-error pin to fix the position of the cylinder head body. The size of the center hole pin needs to match the through hole in the cylinder head body, and the anti-error block on the top of the anti-error pin needs to be able to be completely embedded in the surface of the cylinder head body. When personnel need to perform dotting operations on cylinder head bodies of other models, they only need to replace the center hole pin and the anti-error pin, which reduces the changeover time, improves processing efficiency, and also reduces the number of tooling fixtures required, saving costs.

[0018] 3. After the cylinder head body is fixed, the present invention uses a punching device to perform a punching operation on it, but the working stroke of the punching device is limited. When it is necessary to open pre-punched holes of different depths on the cylinder head body, pads of different specifications and thicknesses can be selected to raise the cylinder head body, or contour blocks of different specifications and thicknesses can be selected to raise the cylinder head body. An annular gasket can also be set under the contour blocks to raise the contour blocks to achieve the purpose of raising the cylinder head body, thereby improving the flexibility of the cylinder head body when punching, and improving the versatility of cylinder head bodies of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the present invention;

[0020] Figure 2 It is an overall cross-sectional view of the present invention;

[0021] Figure 3 It is a schematic diagram of the partial structure of the second screw of the present invention;

[0022] Figure 4 It is a schematic diagram of the local structure of the base of the present invention.

[0023] In the figure: 1. cylinder head body; 101. through hole; 2. base; 201. diamond locating pin; 202. first threaded wall; 203. side hole; 204. latch pin; 205. countersunk hole; 206. anti-mistake pin; 207. limit groove; 3. cushion block; 4. turntable; 401. groove; 402. second threaded wall; 5. equal height block; 501. threaded column; 6. first screw; 601. contact; 7. center hole pin; 701. limit ring; 702. fixing block; 8. second screw. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] In order to solve the problem of low processing efficiency and large processing size deviation when the cylinder head body is dotted, please refer to Figure 1-4 , this embodiment provides the following technical solutions:

[0026] A tool for marking the outer circle of a cylinder head of an air-conditioning compressor comprises a cylinder head body 1 and a base 2, wherein the base 2 is located below the cylinder head body 1, a turntable 4 is arranged below the base 2, a limiting groove 207 is arranged in the middle of the base 2, a diamond-shaped positioning pin 201 and an anti-error pin 206 are arranged on the top of the base 2, a side hole 203 is arranged on the side of the base 2, a first threaded wall 202 and a countersunk hole 205 are arranged inside the base 2, a latch 204 is arranged below the base 2, a through hole 101 is arranged inside the cylinder head body 1, a center hole pin 7 is arranged inside the through hole 101, and a cushion block 3 is arranged between the cylinder head body 1 and the turntable 4.

[0027] A groove 401 is provided in the middle of the turntable 4, the lower end of the pin 204 passes through the cushion block 3 and extends downward to the inside of the groove 401, a second threaded wall 402 is provided inside the turntable 4, a second screw 8 is provided inside the countersunk hole 205, and the lower end of the second screw 8 passes through the base 2 and the cushion block 3 in turn and extends to the inside of the second threaded wall 402.

[0028] Specifically, the latch pin 204 is over-fitted with the groove 401, ensuring that the coaxiality between the turntable 4 and the base 2 is within the specification when the turntable 4 rotates. At the same time, the fixing block 702 at the lower end of the center hole pin 7 is fixed on the base 2, and the upper end of the center hole pin 7 is located inside the through hole 101, ensuring that the coaxiality between the cylinder head body 1 and the base 2 is within the specification, thereby ensuring the stability of the pre-punched size when the cylinder head body 1 is dotted after the turntable 4 drives the cylinder head body 1 to rotate, thereby further improving the processing accuracy.

[0029] A limiting ring 701 is provided at the lower end of the center hole pin 7, and a fixing block 702 is provided at the lower end of the limiting ring 701. The fixing block 702 is located inside the limiting groove 207. A first screw 6 is provided inside the side hole 203, and a contact 601 is provided at one end of the first screw 6. The contact 601 extends to the inside of the limiting groove 207, and the contact 601 contacts the fixing block 702. The lower ends of the diamond locating pin 201 and the anti-error pin 206 are both connected to the base 2, and the upper end of the diamond locating pin 201 is provided with a diamond block, which is embedded in the interior of the cylinder head body 1. The upper end of the anti-error pin 206 is provided with an anti-error block, which is embedded in the interior of the cylinder head body 1.

[0030] Specifically, the center hole pin 7, the diamond locating pin 201 and the anti-error pin 206 cooperate to fix the position of the cylinder head body 1, wherein the size of the center hole pin 7 needs to match the through hole 101 in the cylinder head body 1, and the anti-error block at the top of the anti-error pin 206 needs to be able to be completely embedded in the surface of the cylinder head body 1. When personnel need to perform dotting operations on other types of cylinder head bodies 1, they only need to replace the center hole pin 7 and the anti-error pin 206, which reduces the changeover time, improves processing efficiency, and also reduces the number of tooling fixtures required, further saving processing costs.

[0031] An equal height block 5 is disposed between the cylinder head body 1 and the base 2 . A threaded column 501 is disposed below the equal height block 5 . The equal height block 5 is connected to the threaded column 501 . The threaded column 501 is located inside the first threaded wall 202 .

[0032] Specifically, after the cylinder head body 1 is fixed, it needs to be punched using a punching device, but the working stroke of the punching device is limited. When it is necessary to open pre-punched holes of different depths on the cylinder head body 1, different specifications and thicknesses of gaskets 3 can be selected to raise the cylinder head body 1, or different specifications and thicknesses of contour blocks 5 can be selected to raise the cylinder head body 1, and annular gaskets can be provided under the contour blocks 5 to raise the contour blocks 5, thereby achieving the purpose of raising the cylinder head body 1, thereby improving the flexibility of the cylinder head body 1 when punching, and further improving the versatility of different models of cylinder head bodies 1.

[0033] A method for marking the outer circle of an air-conditioning compressor cylinder head is implemented based on a tool for marking the outer circle of an air-conditioning compressor cylinder head, and is characterized by comprising the following steps:

[0034] Step 1: first place the cushion block 3 on the turntable 4, then insert the latch 204 into the groove 401, and finally use the second screw 8 to connect the base 2, cushion block 3 and turntable 4 into a whole, wherein the latch 204 is overfitted with the groove 401, and the second screw 8 first passes through the countersunk hole 205, then passes through the cushion block 3, and finally extends to the inside of the second threaded wall 402, so that the second screw 8 is threadedly connected with the turntable 4;

[0035] Step 2: Select the anti-error pin 206 and the middle hole pin 7 corresponding to the cylinder head body 1 to be dotted, and the equal height block 5 with suitable height, wherein different types of cylinder head bodies 1 are adapted to different anti-error pins 206, the anti-error block at the top of the anti-error pin 206 needs to be completely embedded in the surface of the cylinder head body 1, and the middle hole pin 7 needs to be adapted to the through hole 101;

[0036] Step 3, connect the anti-error pin 206, the diamond locating pin 201, the middle hole pin 7 and the equal height block 5 to the base 2, and then place the cylinder head body 1 on the equal height block 5, at this time, the anti-error pin 206 and the diamond locating pin 201 are embedded under the cylinder head body 1, the middle hole pin 7 is located inside the through hole 101, the position of the cylinder head body 1 is fixed, wherein the lower ends of the anti-error pin 206 and the diamond locating pin 201 are directly inserted into the slots reserved on the base 2, and the equal height block 5 is threadedly connected to the base 2 through the threaded column 501 below;

[0037] Step 4: Place the three first screws 6 inside the three side holes 203 respectively. The first screws 6 are threadedly connected to the base 2. As the person uses a screwdriver to twist the first screw 6, the contact 601 moves along the side hole 203 to the inside of the limiting groove 207. The three contacts 601 respectively press against the side of the fixing block 702 from three directions, so that the position of the center hole pin 7 is fixed at the center of the limiting groove 207. At this time, the marking operation can begin.

[0038] Working principle: The over-fitting of the latch pin 204 and the groove 401 ensures that the coaxiality of the turntable 4 with the base 2 is within the specification when it rotates. At the same time, the fixing block 702 at the lower end of the center hole pin 7 is fixed on the base 2, and the upper end of the center hole pin 7 is located inside the through hole 101, which ensures that the coaxiality of the cylinder head body 1 and the base 2 is within the specification, thereby ensuring the stability of the pre-punching size when the cylinder head body 1 is dotted after the turntable 4 drives the cylinder head body 1 to rotate; when the staff needs to dot other models of cylinder head bodies 1, they only need to replace the center hole pin 7 and the anti-error pin 206, which reduces the changeover time and improves the processing efficiency.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for marking the outer circle of a cylinder head of an air-conditioning compressor, comprising a cylinder head body (1), characterized in that: The invention also comprises a base (2), wherein the base (2) is located below the cylinder head body (1), a turntable (4) is arranged below the base (2), a limiting groove (207) is arranged in the middle of the base (2), a diamond-shaped positioning pin (201) and an anti-error pin (206) are arranged on the top of the base (2), a side hole (203) is arranged on the side of the base (2), a first threaded wall (202) and a countersunk hole (205) are arranged inside the base (2), a latch pin (204) is arranged below the base (2), a through hole (101) is arranged inside the cylinder head body (1), a center hole pin (7) is arranged inside the through hole (101), and a cushion block (3) is arranged between the cylinder head body (1) and the turntable (4).

2. The air-conditioning compressor cylinder head outer circle marking tool according to claim 1, characterized in that: A groove (401) is provided in the middle of the turntable (4), the lower end of the latch (204) passes through the cushion block (3) and extends downward to the inside of the groove (401), the latch (204) and the groove (401) are over-fitted, a second threaded wall (402) is provided inside the turntable (4), a second screw (8) is provided inside the counterbore (205), and the lower end of the second screw (8) passes through the base (2) and the cushion block (3) in sequence and extends to the inside of the second threaded wall (402).

3. The air-conditioning compressor cylinder head outer circle marking tool according to claim 1, characterized in that: A limiting ring (701) is provided at the lower end of the center hole pin (7), a fixing block (702) is provided at the lower end of the limiting ring (701), the fixing block (702) is located inside the limiting groove (207), a first screw (6) is provided inside the side hole (203), a contact (601) is provided at one end of the first screw (6), the contact (601) extends to the inside of the limiting groove (207), and the contact (601) contacts the fixing block (702).

4. The air-conditioning compressor cylinder head outer circle marking tool according to claim 1, characterized in that: An equal height block (5) is arranged between the cylinder head body (1) and the base (2), a threaded column (501) is arranged below the equal height block (5), the equal height block (5) is connected to the threaded column (501), and the threaded column (501) is located inside the first threaded wall (202).

5. The air-conditioning compressor cylinder head outer circle marking tool according to claim 1, characterized in that: The lower ends of the diamond-shaped positioning pin (201) and the anti-error pin (206) are both connected to the base (2); the upper end of the diamond-shaped positioning pin (201) is provided with a diamond block, which is embedded in the cylinder head body (1); the upper end of the anti-error pin (206) is provided with an anti-error block, which is embedded in the cylinder head body (1).

6. A method for marking the outer circle of a cylinder head of an air-conditioning compressor, based on the tooling for marking the outer circle of a cylinder head of an air-conditioning compressor according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: first place the cushion block (3) on the turntable (4), then insert the latch (204) into the groove (401), and finally use the second screw (8) to connect the base (2), cushion block (3) and turntable (4) into a whole; Step 2: Select the anti-error pin (206) and the center hole pin (7) corresponding to the cylinder head body (1), and the equal height block (5) with suitable height; Step 3: Connect the anti-error pin (206), the diamond-shaped positioning pin (201), the middle hole pin (7) and the equal height block (5) to the base (2), and then place the cylinder head body (1) on the equal height block (5). At this time, the anti-error pin (206) and the diamond-shaped positioning pin (201) are embedded under the cylinder head body (1), and the middle hole pin (7) is located inside the through hole (101); Step 4: Place the three first screws (6) inside the three side holes (203) respectively, and move the contact (601) along the side hole (203) to the inside of the limiting groove (207). The three contacts (601) contact the fixed block (702) from three directions respectively, so that the position of the center hole pin (7) is fixed. At this time, the dotting operation can begin.

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