Shot blasting clamp for shaft barrel type parts

Abstract

The utility model provides a shot blasting clamp for shaft barrel type parts. The shot blasting clamp comprises a base 7, an extension rod 3, a guide circular truncated cone 6 and a gland 2, and the base 7 comprises a chassis 71 and a pull rod 72; the base plate 71 is a metal disc; the pull rod 72 is a rectangular profile, at least two arrangement holes are formed in the side face of the profile, and the pull rod 72 stands in the center of the base plate 71. The extension rod 3 is a rectangular profile, one end of the extension rod 3 is sealed, a plurality of arrangement holes are formed in the side face of the profile, and a single threaded hole is formed in the sealed face; the guide circular truncated cone 6 is matched with an inner cavity at the lower end of the shaft barrel part 5, is a cylinder and circular truncated cone combined body in shape and is provided with a rectangular cavity in the center; the gland 2 is matched with an inner cavity at the upper end of the shaft barrel part 5 and is a cylinder and circular truncated cone combined body in shape, and a bolt connecting through hole is formed in the center; the center of the guide circular truncated cone 6 penetrates through the pull rod 71 and is arranged on the upper surface of the chassis 72; and the pull rod 72 of the base 7 is nested with the extension rod 3 and is connected and fixed with the extension rod 3 through the arrangement holes by using the connecting bolts 4.

Description

Technical Field

[0001] The invention relates to the technical field of shot peening, and in particular provides a shot peening fixture for shaft cylinder parts. Background Art

[0002] As key components in helicopter landing gear systems, shaft barrel parts are subject to long-term cyclic alternating loads during operation. The exterior of the shaft barrel often needs to be shot peened to improve its mechanical properties. In actual production, the shot peening clamping of shaft barrel parts is mainly achieved by deploying a center top on a rotary worktable. However, shaft barrel parts are diverse in size and structure, and shot peening equipment also has problems such as limited center stroke and no center configuration, resulting in the center clamping method being unsuitable for shot peening of some shaft barrel parts. Under such special working conditions, it is often necessary to clamp and fix the parts using special fixtures or general fixtures such as pressure plates, which leads to a series of problems such as increased cost of special fixtures, increased clamping times, and reduced shot peening uniformity. Therefore, there is an urgent need to develop a shot peening fixture for shaft barrel parts that can achieve the versatility and convenience of the fixture while meeting the shot peening uniformity of the parts. Summary of the Invention

[0003] The present application provides a shot peening fixture for shaft cylinder parts, which is used to solve the problem of increased clamping times of special fixtures and reduced shot peening uniformity.

[0004] Technical solution: This application provides a shot peening fixture for shaft cylinder parts, including a base 7, an extension rod 3, a guide truncated table 6, and a pressure cover 2, wherein:

[0005] The base 7 includes a chassis 71 and a pull rod 72; the chassis 71 is a metal disc; the pull rod 72 is a rectangular profile with at least two arranged holes on the side of the profile, and the pull rod 72 stands in the center of the chassis 71; the extension rod 3 is a rectangular profile with one end sealed, a plurality of arranged holes on the side of the profile, and a single threaded hole on the sealing surface; the guide cone 6 is adapted according to the inner cavity of the lower end of the shaft cylinder part 5, and is in the shape of a combination of a cylinder and a cone, with a rectangular cavity in the center; the pressure cover 2 is adapted according to the inner cavity of the shaft cylinder part 5 The inner cavity at the upper end is adapted and has the shape of a combination of a cylinder and a frustum, with a bolt connection through-hole in the center; the center of the guide frustum 6 passes through the pull rod 71 and is placed on the upper surface of the chassis 72; the pull rod 72 of the base 7 is nested with the extension rod 3 and is connected and fixed using the connecting bolt 4 through the arranged holes; the inner cavity of the shaft cylinder part 5 passes through the extension rod 3, the pull rod 71, and the guide frustum 6 and is placed on the upper surface of the chassis 72; the pressure cover 2 is in contact with the upper end surface of the shaft cylinder part 5 and is limited, and the pressure cover fixing bolt 1 passes through the center of the pressure cover 2 and is threadedly connected to the end surface of the extension rod 3.

[0006] Furthermore, the upper surface of the chassis 71 of the base 7 is provided with a countersunk hole for connecting and fixing with a workbench.

[0007] Furthermore, the guide cone 6 and the pressure cover 2 are made of non-metallic polymer.

[0008] Furthermore, the rectangular inner cavity of the guide cone 6 and the pull rod 72 are clearance-matched and limited.

[0009] Furthermore, the cylindrical portion of the guide frustum 6 and the shaft cylinder part 5 are limited by clearance fit, and the frustum portion serves as a placement guide.

[0010] Furthermore, the pull rod 72 of the base 7 and the extension rod 3 are clearance-fitted.

[0011] Furthermore, the pull rod 72 of the base 7 and the side holes of the extension rod 3 are arranged longitudinally and have the same hole diameter and spacing.

[0012] Furthermore, the pull rod 72 of the base 7 and the extension rod 3 are connected in combination through arranged holes to achieve different clamp heights, and the combined height is slightly lower than the installation bottom surface of the pressure cover 2.

[0013] In summary, the present application provides a shot peening fixture for shaft cylinder parts, and the beneficial effects of the present invention are:

[0014] 1. The fixture adjusts the clamping height of the tooling by changing the position of the extension rod, which is suitable for shot peening of shaft cylinders at different heights.

[0015] 2. The fixture adopts an internal clamping method, which can easily rotate and shot peen the parts, realize unobstructed shot peening area outside the shaft cylinder, make the shaft cylinder parts shot peened evenly, reduce the number of clamping times, and improve the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a shot peening fixture for shaft and cylinder parts provided in this application;

[0017] Figure 2 A central cross-sectional view of a shot peening fixture for shaft and cylinder parts provided in this application;

[0018] Among them: 1- gland fixing bolt, 2- gland, 3- extension rod, 4- connecting bolt, 5- shaft cylinder part, 6- guide round table, 7- base. DETAILED DESCRIPTION

[0019] In response to the above problems, the present invention provides a shot peening fixture for shaft-cylinder parts, which solves the problem of shot peening clamping of shaft-cylinder parts when the top clamping method is not applicable and does not require modification of the shot peening equipment, while meeting the requirements of shot peening uniformity of parts and the versatility and convenience of tooling fixtures.

[0020] Example 1

[0021] like Figure 1-2 As shown, the present application provides a shot peening fixture for shaft cylinder parts, comprising a base 7, an extension rod 3, a guide truncated table 6, and a pressure cover 2, wherein:

[0022] The base 7 includes a chassis and a pull rod; the chassis is a metal disc; the pull rod is a rectangular profile with at least two arranged holes provided on the side of the profile, and the pull rod stands in the center of the chassis; the extension rod 3 is a rectangular profile with one end sealed, a plurality of arranged holes provided on the side of the profile, and a single threaded hole provided on the sealing surface; the guide cone 6 is adapted according to the inner cavity of the lower end of the shaft cylinder part 5, and is shaped as a combination of a cylinder and a cone, with a rectangular cavity in the center; the pressure cover 2 is adapted according to the inner cavity of the upper end of the shaft cylinder part 5, and is shaped as a combination of a cylinder and a cone, with a bolt connection through hole in the center; the center of the guide cone 6 passes through the pull rod and is placed on the upper surface of the chassis; the pull rod of the base 7 is nested with the extension rod 3 and is connected and fixed using the connecting bolt 4 through the arranged holes; the inner cavity of the shaft cylinder part 5 passes through the extension rod 3, the pull rod, and the guide cone 6 and is placed on the upper surface of the chassis; the pressure cover 2 is contacted and limited with the upper end face of the shaft cylinder part 5, and the pressure cover fixing bolt 1 passes through the center of the pressure cover 2 and is threadedly connected to the end face of the extension rod 3.

[0023] Furthermore, the upper surface of the chassis of the base 7 is provided with a countersunk hole for connecting and fixing with a workbench.

[0024] Furthermore, the guide cone 6 and the pressure cover 2 are made of non-metallic polymer.

[0025] Furthermore, the rectangular inner cavity of the guide cone 6 and the pull rod are clearance-matched and limited.

[0026] Furthermore, the cylindrical portion of the guide frustum 6 and the shaft cylinder part 5 are limited by clearance fit, and the frustum portion serves as a placement guide.

[0027] Furthermore, the pull rod of the base 7 and the extension rod 3 are clearance-fitted.

[0028] Furthermore, the holes arranged on the side surfaces of the pull rod of the base 7 and the extension rod 3 are arranged longitudinally and have the same hole diameter and spacing.

[0029] Furthermore, the pull rod of the base 7 and the extension rod 3 are connected in combination through arranged holes to achieve different clamp heights, and the combined height is slightly lower than the installation bottom surface of the pressure cover 2.

[0030] Example 2

[0031] The present application provides a method for clamping a shot peening fixture for shaft cylinder parts, comprising:

[0032] Step 1) Fix the base 7 of the shot blasting fixture to the center of the rotary table through the bottom countersunk hole;

[0033] Step 2) Place the adapting guide truncated platform 6 on the upper surface of the chassis through the pull rod;

[0034] Step 3) Insert the extension rod 3 onto the pull rod and adjust its position so that the clamp height fits the shaft barrel part 5. Use the connecting bolt 4 to connect the fixed base pull rod and the extension rod 3. The rod body can be wrapped with isolation fabric for protection.

[0035] Step 4) Place the inner cavity of the shaft cylinder part 5 through the extension rod 3, the pull rod, and the guide round platform 6 on the upper surface of the chassis;

[0036] Step 5) The gland 2 is in contact with the upper end surface of the shaft cylinder part 5 to limit the position, and the gland fixing bolt 1 passes through the gland 2 and is connected to the extension rod 3 to fix the shaft cylinder part 5.

[0037] In summary, the present application provides a shot peening fixture for shaft cylinder parts, and the beneficial effects of the present invention are:

[0038] 1. The fixture adjusts the clamping height of the tooling by changing the position of the extension rod, which is suitable for shot peening of shaft cylinders at different heights.

[0039] 2. The fixture adopts an internal clamping method, which can easily rotate and shot peen the parts, realize unobstructed shot peening area outside the shaft cylinder, make the shaft cylinder parts shot peened evenly, reduce the number of clamping times, and improve the convenience of use.

Claims

1. A shot peening fixture for shaft cylinder parts, characterized in that: It comprises a base (7), an extension rod (3), a guide truncated cone (6), and a pressure cover (2), wherein: The base (7) includes a chassis and a pull rod; the chassis is a metal disc; the pull rod is a rectangular profile, with at least two arranged holes provided on the side of the profile, and the pull rod stands in the center of the chassis; the extension rod (3) is a rectangular profile, one end of which is sealed, with multiple arranged holes provided on the side of the profile, and a single threaded hole provided on the sealing surface; the guide cone (6) is adapted according to the inner cavity of the lower end of the shaft cylinder part (5), and is shaped like a combination of a cylinder and a cone, with a rectangular cavity in the center; the pressure cover (2) is adapted according to the inner cavity of the upper end of the shaft cylinder part (5) The shape is a combination of a cylinder and a truncated cone, with a bolt connection through hole in the center; the center of the guide truncated cone (6) passes through the pull rod and is placed on the upper surface of the chassis; the pull rod of the base (7) is nested with the extension rod (3), and is connected and fixed using the connecting bolt (4) through the arrangement hole; the inner cavity of the shaft cylinder part (5) passes through the extension rod (3), the pull rod, and the guide truncated cone (6) and is placed on the upper surface of the chassis; the pressure cover (2) is contacted and limited with the upper end face of the shaft cylinder part (5), and the pressure cover fixing bolt (1) passes through the center of the pressure cover (2) and is threadedly connected to the end face of the extension rod (3).

2. The shot blasting fixture according to claim 1, characterized in that The upper surface of the chassis of the base (7) is provided with a countersunk hole for connecting and fixing with a workbench.

3. The shot blasting fixture according to claim 1, characterized in that The guide cone (6) and the pressure cover (2) are made of non-metallic polymer.

4. The shot blasting fixture according to claim 1, characterized in that The rectangular inner cavity of the guide cone (6) and the pull rod are clearance-matched and limited.

5. The shot blasting fixture according to claim 1, characterized in that The cylindrical portion of the guide frustum (6) and the shaft cylinder part (5) are limited by clearance fit, and the frustum portion serves as a guide for placement.

6. The shot blasting fixture according to claim 1, characterized in that The pull rod of the base (7) and the extension rod (3) are clearance-fitted.

7. The shot blasting fixture according to claim 1, characterized in that The side arrangement holes of the pull rod and the extension rod (3) of the base (7) are arranged longitudinally and have the same hole diameter and spacing.

8. The shot blasting fixture according to claim 1, characterized in that The pull rod and the extension rod (3) of the base (7) are connected in combination through arranged holes to achieve different clamp heights, and the combined height is slightly lower than the installation bottom surface of the pressure cover (2).

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