Work fixture of valve body for automobile exhaust system

Abstract

The utility model relates to the technical field of automobile part manufacturing, and particularly discloses a tool clamp of a valve body for an automobile exhaust system. The tool clamp comprises a base, a first supporting cylinder and a second supporting cylinder are arranged on the base, a positioning block is arranged on the side, away from the second supporting cylinder, of the first supporting cylinder, and the positioning block is provided with an inwards-sunken arc-shaped positioning groove; the same sides of the first supporting cylinder and the second supporting cylinder are each provided with a first supporting block and a first pressing mechanism. The top face of each first supporting block is provided with a first positioning protrusion and a positioning pin. A second supporting block and a second pressing mechanism are arranged on the other side of the first supporting cylinder, and a second positioning protrusion is arranged on the top face of the second supporting block. The base is further provided with a third pressing and holding mechanism used for pressing and holding the valve body to be machined on the supporting face of the second supporting cylinder. According to the tool clamp, the two faces of the valve body can be machined conveniently, the clamping frequency is reduced, and the machining efficiency and the machining precision can be improved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts manufacturing, in particular to a tooling fixture for a valve body of an automobile exhaust system. Background Art

[0002] The existing valve body for automobile emission system needs to be processed on five sides during processing. However, the existing fixing method will block the working surface of the part. In order to achieve multi-side processing, multiple fixtures need to be used for multiple clamping, which not only affects the processing efficiency, but also the processed valve body is easily affected by manufacturing errors and affects the assembly effect. Therefore, it is necessary to improve the existing valve body fixtures to solve the above problems. Summary of the invention

[0003] The utility model aims to provide a tooling fixture for a valve body of an automobile exhaust system, which can facilitate processing of both sides of the valve body, reduces the number of clamping times, and is conducive to improving processing efficiency and processing accuracy.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A fixture for a valve body of an automobile exhaust system, comprising a base, on which a first supporting cylinder and a second supporting cylinder for supporting the valve body to be processed are arranged, a positioning block is arranged on a side of the first supporting cylinder away from the second supporting cylinder, and the positioning block has an inwardly concave arc-shaped positioning groove;

[0006] The first support cylinder and the second support cylinder are both provided with a first support block and a first holding mechanism on the same side, the first support block is provided with a first positioning protrusion and a positioning pin on the top surface, and the first holding mechanism can hold the valve body to be processed on the first positioning protrusion;

[0007] A second support block and a second pressing mechanism are provided on the other side of the first support cylinder, a second positioning protrusion is provided on the top surface of the second support block, and the second pressing mechanism can press the valve body to be processed on the second positioning protrusion;

[0008] The base is also provided with a third pressing mechanism for pressing the valve body to be processed on the supporting surface of the second supporting cylinder.

[0009] Furthermore, the top surface of the first support block is provided with a first step surface and a second step surface with a height difference, the first positioning protrusion is protruded on the first step surface, and the upper end of the positioning pin protrudes out of the second step surface.

[0010] Furthermore, the positioning pin is a spring pin.

[0011] Furthermore, an arc-shaped slide groove is radially provided on the side surface of the movable pin body of the positioning pin, and a cylindrical pin is connected to the first supporting block, and one end of the cylindrical pin is slidably disposed in the arc-shaped slide groove.

[0012] Furthermore, the installation position of the positioning block can be adjusted to be close to or away from the first supporting cylinder.

[0013] Furthermore, a limit plate is provided on one side of the second supporting cylinder, the limit plate is installed on one side of the first supporting block, and the installation position of the limit plate can be adjusted.

[0014] Furthermore, a first air hole is provided in each of the first supporting block and the second supporting block, the first air hole is communicated with a second air hole provided on the base, and one end of the first air hole passes through the top surface of the first positioning protrusion or the top surface of the second positioning protrusion.

[0015] Furthermore, the first pressing mechanism, the second pressing mechanism and the third pressing mechanism all include a lever cylinder and a pressure head disposed at a pressing end of the lever cylinder;

[0016] The base is provided with a first main oil passage, and the oil passages of the lever oil cylinders are respectively connected with the corresponding first main oil passage in a sealed manner.

[0017] Furthermore, a second main oil passage is provided on the base, and the oil passages of the first supporting cylinder and the second supporting cylinder are respectively sealed and connected to the corresponding second main oil passage.

[0018] Furthermore, a group of hanging rings are connected to the base.

[0019] The beneficial effects of the utility model are as follows: the utility model proposes a fixture for a valve body for an automobile exhaust system, which places the valve body to be processed on the first support cylinder and the second support cylinder, and positions it through a positioning block and two positioning pins; the valve body to be processed is pressed together by two first holding mechanisms, a second holding mechanism and a third holding mechanism, thereby completing the clamping of the valve body to be processed. The fixture can facilitate the processing of the top surface and one end surface of the valve body, reduces the number of clamping times, and is conducive to improving processing efficiency and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a tooling fixture for a valve body used in an automobile exhaust system.

[0021] Figure 2 It is a partial structural schematic diagram of a tooling fixture for a valve body for an automobile exhaust system provided by the utility model at another angle.

[0022] Figure 3 yes Figure 1 Schematic diagram of the structure of the first supporting block in FIG.

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the first pressing mechanism. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0025] like Figures 1 to 4 As shown, a fixture for a valve body of an automobile exhaust system comprises a base 1, on which a first supporting cylinder 2 and a second supporting cylinder 3 for supporting a valve body 100 to be processed are arranged, a positioning block 4 is arranged on a side of the first supporting cylinder 2 away from the second supporting cylinder 3, and the positioning block 4 has an arc-shaped positioning groove recessed inward; a first supporting block 5 and a first holding mechanism 61 are arranged on the same side of the first supporting cylinder 2 and the second supporting cylinder 3, a first positioning protrusion 51 and a positioning pin 52 are arranged on the top surface of the first supporting block 5, and the first holding mechanism 61 can hold the valve body 100 to be processed on the first positioning protrusion 51; a second supporting block 7 and a second holding mechanism 62 are arranged on the other side of the first supporting cylinder 2, a second positioning protrusion 71 is arranged on the top surface of the second supporting block 7, and the second holding mechanism 62 can hold the valve body 100 to be processed on the second positioning protrusion 71; a third holding mechanism 63 for holding the valve body 100 to be processed on the supporting surface of the second supporting cylinder 3 is also arranged on the base 1.

[0026] Specifically, Figure 3 As shown, the top surface of the first support block 5 is provided with a first step surface 53 and a second step surface 54 with a height difference, wherein the first positioning protrusion 51 is convexly provided on the first step surface 53, and the upper end of the positioning pin 52 extends out of the second step surface 54. In this embodiment, the positioning pin 52 is preferably a spring pin. The side surface of the movable pin body of the positioning pin 52 is provided with an arc-shaped slide groove in the radial direction, and a cylindrical pin 55 is connected to the first support block 5, and one end of the cylindrical pin 55 is slidably provided in the arc-shaped slide groove to ensure that the movable pin body of the positioning pin 52 moves and retracts along the axial direction.

[0027] In the fixture, the installation position of the positioning block 4 can be adjusted close to or away from the first support cylinder 2. In this embodiment, the top surface of the positioning block 4 is provided with two first arc grooves, and locking bolts are arranged in the first arc grooves to lock and connect the positioning block 4 and the base 1.

[0028] In the fixture, a limit plate 8 is provided on one side of the second support cylinder 3 to limit the lateral position of the valve body 100 to be processed. The limit plate 8 is installed on one side of the first support block 5, and the installation position of the limit plate 8 can be adjusted. In this embodiment, two second arc grooves are provided on the side of the limit plate 8, and locking bolts are provided in the second arc grooves to lock and connect the limit plate 8 and the first support block 5.

[0029] In order to prevent the valve body 100 from being fixed on the first positioning protrusion 51 and the second positioning protrusion 71 by vacuum adsorption, a first air hole 9 may be opened in the first support block 5 and the second support block 7. The first air hole 9 is connected to the second air hole opened on the side of the base 1, and one end of the first air hole 9 passes through the top surface of the first positioning protrusion 51 or the top surface of the second positioning protrusion 71.

[0030] In the fixture, the first pressing mechanism 61, the second pressing mechanism 62 and the third pressing mechanism 63 all include a lever cylinder 64 and a pressing head 65 disposed at the pressing end of the lever cylinder 64. Figure 4 As shown, a first main oil passage is provided on the base 1, and the oil passages of each lever oil cylinder 64 are sealed and connected with the corresponding first main oil passage. In this way, the first pressing mechanism 61, the second pressing mechanism 62 and the third pressing mechanism 63 can be ensured to perform pressing or releasing actions synchronously.

[0031] Furthermore, a second main oil passage is provided on the base 1, wherein the oil passages of the first supporting cylinder 2 and the second supporting cylinder 3 are respectively sealed and connected with the corresponding second main oil passages to realize synchronous lifting and lowering of the first supporting cylinder 2 and the second supporting cylinder 3.

[0032] In the fixture, a group of lifting rings 11 are connected to the base 1 to facilitate lifting and carrying the fixture.

[0033] The utility model is a fixture for a valve body of an automobile exhaust system. When in use, the valve body 100 to be processed is placed on the first support cylinder 2 and the second support cylinder 3, and is positioned by the positioning block 4 and two positioning pins; the first pressing mechanism 61, the second pressing mechanism 62 and the third pressing mechanism 63 jointly press the valve body 100 to be processed, thereby completing the clamping of the valve body 100 to be processed. The fixture is used to fix the valve body 100 to be processed, which can facilitate the processing of the top surface and one end surface of the valve body 100, reduce the number of clamping times, and help improve processing efficiency and processing accuracy.

[0034] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A fixture for a valve body for an automobile exhaust system, characterized in that: The invention comprises a base (1), wherein a first supporting cylinder (2) and a second supporting cylinder (3) for supporting a valve body (100) to be processed are arranged on the base (1), a positioning block (4) is arranged on a side of the first supporting cylinder (2) away from the second supporting cylinder (3), and the positioning block (4) has an inwardly concave arc-shaped positioning groove; A first support block (5) and a first pressing mechanism (61) are provided on the same side of the first support cylinder (2) and the second support cylinder (3); a first positioning protrusion (51) and a positioning pin (52) are provided on the top surface of the first support block (5); and the first pressing mechanism (61) is capable of pressing the valve body (100) to be processed onto the first positioning protrusion (51); A second support block (7) and a second pressing mechanism (62) are provided on the other side of the first support cylinder (2); a second positioning protrusion (71) is provided on the top surface of the second support block (7); and the second pressing mechanism (62) is capable of pressing the valve body (100) to be processed onto the second positioning protrusion (71); The base (1) is also provided with a third pressing mechanism (63) for pressing the valve body (100) to be processed onto the supporting surface of the second supporting cylinder (3).

2. A fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: The top surface of the first support block (5) is provided with a first step surface (53) and a second step surface (54) having a height difference, the first positioning protrusion (51) is protruding on the first step surface (53), and the upper end of the positioning pin (52) protrudes from the second step surface (54).

3. A fixture for a valve body for an automobile exhaust system according to claim 1 or 2, characterized in that: The positioning pin (52) is a spring pin.

4. A fixture for a valve body for an automobile exhaust system according to claim 3, characterized in that: An arc-shaped sliding groove is radially provided on the side surface of the movable pin body of the positioning pin (52); a cylindrical pin (55) is connected to the first supporting block (5); one end of the cylindrical pin (55) is slidably disposed in the arc-shaped sliding groove.

5. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: The installation position of the positioning block (4) can be adjusted to be close to or away from the first supporting cylinder (2).

6. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: A limit plate (8) is provided on one side of the second support cylinder (3); the limit plate (8) is mounted on one side of the first support block (5); and the mounting position of the limit plate (8) is adjustable.

7. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: A first air hole (9) is provided in each of the first support block (5) and the second support block (7), the first air hole (9) being connected to a second air hole provided on the base (1), and one end of the first air hole (9) passes through the top surface of the first positioning protrusion (51) or the top surface of the second positioning protrusion (71).

8. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: The first pressing mechanism (61), the second pressing mechanism (62) and the third pressing mechanism (63) all comprise a lever cylinder (64) and a pressing head (65) arranged at the pressing end of the lever cylinder (64); The base (1) is provided with a first main oil passage, and the oil passage of each lever oil cylinder (64) is respectively in sealed communication with the corresponding first main oil passage.

9. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: The base (1) is also provided with a second main oil passage, and the oil passages of the first supporting cylinder (2) and the second supporting cylinder (3) are respectively sealed and connected to the corresponding second main oil passage.

10. The fixture for a valve body for an automobile exhaust system according to claim 1, characterized in that: A set of lifting rings (11) is connected to the base (1).

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