Cylinder cover machining clamp

Abstract

The utility model discloses a cylinder cover processing fixture, which relates to the technical field of fixture equipment and comprises a bridge plate, a positioning component and a pressing component are respectively mounted on two sides of the top of the bridge plate, a cushion block assembly is arranged on the top of the positioning component, and equal-height blocks are fixedly arranged on two sides of the bottom end of the bridge plate. According to the fixture, a large plane, the first mistake-proof pin and the sliding block assembly are adopted for positioning to limit the angle, all limiting of six degrees of freedom is achieved, the over-positioning phenomenon is avoided, the positioning reference and the product requirement are completely coincident, the position positioning precision can reach high precision through cooperation of the product, the sliding block assembly and the first mistake-proof pin, and the positioning precision is high. The clamping device is simple in structure, can meet product requirements, adopts a pneumatic lever principle for clamping, is high in clamping force, can overcome acting force of product drilling and plane machining, reduces clamping time while reducing clamping cost, and improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fixture equipment technology, and in particular to a cylinder head machining fixture. Background Technology

[0002] With the development of cylinder technology, cylinder heads are generally precision-machined using milling during their production. Different types of cylinders require different types of cylinder heads, and the fixtures used during machining also differ. Therefore, existing cylinder head machining fixtures still have certain shortcomings when clamping different types of cylinder heads:

[0003] 1. It can easily cause over-alignment, resulting in cylinder head dents;

[0004] 2. The clamping process is slow, which affects processing efficiency;

[0005] 3. Poor positioning accuracy affects the actual processing effect.

[0006] Therefore, it is necessary to invent a cylinder head machining fixture to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a cylinder head machining fixture to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cylinder head processing fixture, including a bridge plate, wherein a positioning component and a clamping component are respectively installed on the top two sides of the bridge plate, a pad assembly is provided on the top of the positioning component, and equal-height blocks are fixedly provided on both sides of the bottom end of the bridge plate;

[0009] The positioning component includes a positioning plate assembly, and the bottom end of the positioning plate assembly is fixedly connected to the top end of the bridge plate.

[0010] The clamping assembly includes a thin cylinder, which is fixedly mounted on the top of the bridge plate. A pressure plate is movably mounted on the top of the thin cylinder, and one end of the pressure plate extends to the top of the thin cylinder near the positioning assembly.

[0011] The pad assembly includes a pad body, and the pad body is arranged in an inverted "U" shape.

[0012] Preferably, a slide is fixedly provided on the top of the positioning plate assembly on the side away from the pressing component, and a handle is installed in the middle of the side of the slide away from the pressing component.

[0013] Preferably, a slider assembly is provided on the other side of the slide block, and the slider assembly is fixedly installed on one end of the handle. A return spring is installed at the connection between the handle and the slider assembly.

[0014] Preferably, the positioning plate assembly includes a positioning plate body, and a positioning pin mounting groove is provided on the top of the positioning plate body near the clamping component. A circular positioning pin assembly adapted to the positioning pin mounting groove is installed inside the positioning pin mounting groove. The circular positioning pin assembly includes a circular block, and a fixing post is integrally formed at the bottom center of the circular block.

[0015] Preferably, the slider assembly includes a connecting rod, one end of which is integrally formed with a sliding plate, and a groove is formed in the middle of the side of the sliding plate away from the connecting rod, and the inner walls of the two sides of the groove are inclined.

[0016] Preferably, a second sliding groove is provided through the middle of the top of the pressure plate, and a first sliding groove is provided through the top of the pressure plate near the thin cylinder. A push rod is installed at the output end of the thin cylinder, and the push rod moves through the first sliding groove.

[0017] Preferably, the bottom of the pressure plate is provided with a support pin, and the bottom end of the support pin is fixedly connected to the top end of the bridge plate. The top end of the support pin movably passes through the second slide groove, and the top end of the support pin is threadedly connected with a screw. The top end of the pressure plate away from the thin cylinder is fixedly installed with a first anti-misalignment pin.

[0018] Preferably, an extension block is integrally formed on both bottom ends of the pad block body, and the bottom end of the extension block is inclined. A second anti-misalignment pin is fixedly installed inside the pad block body.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] The fixture positioning of this utility model uses a large plane, a first anti-misalignment pin, and a slider assembly to limit the angle, thereby achieving full limitation of all six degrees of freedom without over-positioning. The positioning datum and product requirements are completely coincident. The positioning accuracy can be achieved with the cooperation of the product, the slider assembly, and the first anti-misalignment pin, which can meet product requirements. The clamping adopts the pneumatic lever principle, which has high clamping force and can overcome the forces of drilling and machining the product surface, reducing clamping costs and clamping time, and improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the overall top view structure of this utility model.

[0023] Figure 3 This is a side sectional view of the positioning component of this utility model.

[0024] Figure 4This is a schematic diagram of the positioning plate assembly structure of this utility model.

[0025] Figure 5 This is a schematic diagram of the slider assembly structure of this utility model.

[0026] Figure 6 This is a schematic diagram of the circular locating pin assembly of this utility model.

[0027] Figure 7 This is a schematic diagram of the pressing component structure of this utility model.

[0028] Figure 8 This is a schematic diagram of the pad assembly structure of this utility model.

[0029] In the diagram: 1. Bridge plate; 2. Positioning assembly; 3. Clamping assembly; 4. Pad assembly; 5. Equal height block; 201. Positioning plate assembly; 2011. Positioning plate body; 2012. Positioning pin mounting slot; 202. Slide block; 203. Slider assembly; 2031. Connecting rod; 2032. Slide plate; 2033. Groove; 204. Handle; 205. Circular positioning pin assembly; 2051. Circular block; 2052. Fixing post; 206. Return spring; 301. Thin cylinder; 302. Top rod; 303. Pressure plate; 304. First slide groove; 305. Second slide groove; 306. First anti-misalignment pin; 307. Support pin; 401. Pad body; 402. Extension block; 403. Second anti-misalignment pin. Detailed Implementation

[0030] 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.

[0031] This utility model provides, for example Figure 1-8 The cylinder head machining fixture shown includes a bridge plate 1. A positioning component 2 and a clamping component 3 are respectively installed on the top two sides of the bridge plate 1. A pad assembly 4 is provided on the top of the positioning component 2. Equal height blocks 5 are fixedly provided on both sides of the bottom end of the bridge plate 1.

[0032] Furthermore, the positioning component 2 includes a positioning plate assembly 201, the bottom end of which is fixedly connected to the top end of the bridge plate 1. A slide block 202 is fixedly provided on the side of the top end of the positioning plate assembly 201 away from the clamping component 3, and a handle 204 is installed in the middle of the side of the slide block 202 away from the clamping component 3. A slider assembly 203 is provided on the other side of the slide block 202, and the slider assembly 203 is fixedly installed on one end of the handle 204. A return spring 206 is installed at the connection between the handle 204 and the slider assembly 203. The positioning plate assembly 201 includes a positioning plate body 2011, the top end of which is... A positioning pin mounting groove 2012 is provided on one side near the clamping component 3. A circular positioning pin assembly 205 adapted to the positioning pin mounting groove 2012 is installed inside the positioning pin mounting groove 2012. The circular positioning pin assembly 205 includes a circular block 2051. A fixing post 2052 is integrally formed at the bottom center of the circular block 2051. The slider assembly 203 includes a connecting rod 2031. A sliding plate 2032 is integrally formed at one end of the connecting rod 2031. A groove 2033 is provided in the center of the side of the sliding plate 2032 away from the connecting rod 2031. The inner walls of the two sides of the groove 2033 are inclined. The inclined setting facilitates positioning.

[0033] The clamping assembly 3 includes a thin cylinder 301, which is fixedly mounted on the top of the bridge plate 1. A pressure plate 303 is movably mounted on the top of the thin cylinder 301, with one end extending to the top of the thin cylinder 301 near the positioning assembly 2. A second sliding groove 305 is formed through the middle of the top of the pressure plate 303, and a first sliding groove 304 is formed through the top of the pressure plate 303 near the thin cylinder 301. A push rod 302 is installed at the output end of the thin cylinder 301, and the push rod 302 movably passes through the first sliding groove 304. A support pin 307 is provided at the bottom of the pressure plate 303, and the bottom end of the support pin 307 is fixedly connected to the top of the bridge plate 1. The top end of the support pin 307 movably passes through the second sliding groove 305. The top of the support pin 307 is threaded with a screw, and a washer is placed at the bottom of the screw to protect the pressure plate 303. The top of the pressure plate 303, away from the thin cylinder 301, is fixedly installed with a first anti-misalignment pin 306. The fixture uses a large plane, the first anti-misalignment pin 306, and the slider assembly 203 to limit the angle, so as to achieve full limitation of six degrees of freedom without over-positioning. The positioning reference and product requirements are completely coincident. The position positioning accuracy can be within 0.05 through the cooperation of the product, the slider assembly 203, and the first anti-misalignment pin 306, which can meet the product requirements. The clamping adopts the pneumatic lever principle with high clamping force, which can overcome the force of drilling and machining the product surface, reduce clamping cost, reduce clamping time, and improve production efficiency.

[0034] The pad assembly 4 includes a pad body 401, which is in the shape of an inverted "U". Both sides of the bottom of the pad body 401 are integrally formed with extension blocks 402, and the bottom of the extension blocks 402 is inclined. A second anti-misalignment pin 403 is fixedly installed inside the pad body 401.

[0035] Working principle of this utility model:

[0036] When clamping, before loading and unloading the workpiece, manually pull the pressure plate 303 to the far right. The pressure plate 303 is in an open state to facilitate loading and unloading the workpiece. The pad assembly 4 is loaded and unloaded together with the workpiece and placed on the top of the cylinder head. The pad assembly 4 is equipped with a second anti-misplacement pin 403 to prevent the pad from being placed backwards. At the same time, a misalignment groove is opened on the top pressing surface of the pad body 401 to prevent the workpiece from being placed backwards as a whole. Before loading the workpiece and the pad assembly 4 together into the top of the circular positioning pin assembly 205, first manually pull the handle 204 to move the slider assembly 203 away. Then, put in the workpiece. Then, the slider assembly 203 is pushed out by the return spring 206 to correct the angle of the workpiece. Then, load the workpiece and push the pressure plate 303 to the left pressing limit position. At this point, the product loading is completed. Finally, start the clamping air valve switch. The thin cylinder 301 pushes the pressure plate 303 to clamp the workpiece.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cylinder head machining fixture, characterized in that: The bridge plate (1) includes a positioning component (2) and a pressing component (3) installed on the top two sides of the bridge plate (1), a pad assembly (4) is provided on the top of the positioning component (2), and equal height blocks (5) are fixedly provided on both sides of the bottom end of the bridge plate (1). The positioning component (2) includes a positioning plate assembly (201), and the bottom end of the positioning plate assembly (201) is fixedly connected to the top end of the bridge plate (1); The clamping assembly (3) includes a thin cylinder (301), which is fixedly mounted on the top of the bridge plate (1). A pressure plate (303) is movably mounted on the top of the thin cylinder (301), and one end of the pressure plate (303) extends to the top of the thin cylinder (301) near the positioning assembly (2). The pad assembly (4) includes a pad body (401), and the pad body (401) is arranged in an inverted "U" shape.

2. The cylinder head machining fixture according to claim 1, characterized in that: A slide (202) is fixedly provided on the top of the positioning plate assembly (201) away from the pressing component (3), and a handle (204) is installed in the middle of the side of the slide (202) away from the pressing component (3).

3. A cylinder head machining fixture according to claim 2, characterized in that: A slider assembly (203) is provided on the other side of the slide block (202), and the slider assembly (203) is fixedly installed on one end of the handle (204). A return spring (206) is installed at the connection between the handle (204) and the slider assembly (203).

4. A cylinder head machining fixture according to claim 3, characterized in that: The positioning plate assembly (201) includes a positioning plate body (2011). A positioning pin mounting groove (2012) is provided on the top side of the positioning plate body (2011) near the clamping component (3). A circular positioning pin assembly (205) adapted to the positioning pin mounting groove (2012) is installed inside the positioning pin mounting groove (2012). The circular positioning pin assembly (205) includes a round block (2051). A fixing post (2052) is integrally formed at the bottom center of the round block (2051).

5. A cylinder head machining fixture according to claim 4, characterized in that: The slider assembly (203) includes a connecting rod (2031), one end of which is integrally formed with a sliding plate (2032). A groove (2033) is provided in the middle of the side of the sliding plate (2032) away from the connecting rod (2031), and the inner walls of the two sides of the groove (2033) are inclined.

6. A cylinder head machining fixture according to claim 5, characterized in that: The top center of the pressure plate (303) is provided with a second sliding groove (305), and the top end of the pressure plate (303) near the thin cylinder (301) is provided with a first sliding groove (304). The output end of the thin cylinder (301) is provided with a push rod (302), and the push rod (302) moves through the first sliding groove (304).

7. A cylinder head machining fixture according to claim 6, characterized in that: The bottom of the pressure plate (303) is provided with a support pin (307), and the bottom end of the support pin (307) is fixedly connected to the top end of the bridge plate (1). The top end of the support pin (307) moves through the second slide groove (305), and the top end of the support pin (307) is threadedly connected with a screw. The top end of the pressure plate (303) away from the thin cylinder (301) is fixedly installed with a first anti-misalignment pin (306).

8. A cylinder head machining fixture according to claim 7, characterized in that: The bottom ends of both sides of the pad body (401) are integrally formed with extension blocks (402), and the bottom ends of the extension blocks (402) are inclined. The pad body (401) is internally fixedly installed with a second anti-misalignment pin (403).

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