Special cold extrusion core rod containing lining for damaged plate hole

Abstract

The utility model relates to the technical field of special cold extrusion mandrels with bushings for damaged plate holes, in particular to a special cold extrusion mandril with bushings for damaged plate holes, which comprises an extrusion cylinder, an extrusion mandril is arranged on the lower side of the extrusion cylinder, and a connecting component is arranged between the extrusion cylinder and the extrusion mandril. A connecting assembly is arranged on a cold extrusion core rod special for a damaged plate hole and internally provided with a lining, meanwhile, an extrusion rod is extruded towards the inner side, the extrusion rod drives a first moving rod and a second moving rod to move towards the inner side, and when the first moving rod and the second moving rod move towards the inner side, clamping plates are driven to contract towards the inner side; the extrusion core rod can be disassembled by moving the connecting block downwards, the extrusion core rod can be installed through reverse operation, installation and disassembly are convenient, and therefore when the extrusion core rod is abraded, the extrusion core rod can be replaced conveniently, and the whole device is simple in structure, convenient to operate and higher in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of a special cold extrusion core rod for a damaged plate hole containing a bushing, in particular to a special cold extrusion core rod for a damaged plate hole containing a bushing. Background Art

[0002] A cold extruded rod is a core rod used in a cold extrusion process. Its function is to pass a very hard core rod through a connecting hole, causing the connecting hole to undergo elastic-plastic deformation, forming circumferential residual compressive stress and radial residual compressive stress, thereby improving the fatigue life and fatigue resistance of the connecting hole. During the cold extrusion strengthening process, the diameter of the core rod is usually larger than the diameter of the connecting hole, which causes the core rod to exert pressure on the hole wall when passing through the connecting hole, causing the hole wall to undergo plastic deformation. This deformation will make the grains on the surface of the hole wall finer and the grains more densely arranged, thereby increasing the strength of the hole wall surface and reducing the surface roughness. At the same time, the extrusion action can also remove scratches and microcracks on the hole wall surface.

[0003] The existing special cold extrusion mandrel for damaged plate holes containing a bushing is prone to wear after long-term use, but it is currently difficult to replace the cold extrusion mandrel.

[0004] Therefore, a special cold extrusion mandrel with a sleeve inside for damaged plate holes is needed to improve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a special cold extrusion mandrel for damaged plate holes containing a bushing, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A cold extrusion mandrel for damaged plate holes containing a bushing, comprising an extrusion cylinder, an extrusion mandrel disposed on the lower side of the extrusion cylinder, and a connecting assembly disposed between the extrusion cylinder and the extrusion mandrel;

[0008] The linkage is configured to connect the first and second linkages, and the linkage is configured to connect the first and second linkages, and the linkage is configured to connect the first and second linkages, and the linkage is configured to connect the first and second linkages, and the linkage is configured to connect the first and second linkages, and the linkage is configured to connect the first and second linkages, and the linkage is configured to connect the

[0009] As a preferred solution of the present invention, the driving end of the extrusion cylinder is fixedly connected to the base surface of the connecting seat.

[0010] As a preferred solution of the present invention, the lower end of the connecting block is connected to the upper end of the extrusion core rod.

[0011] As a preferred solution of the present invention, the extrusion rod is arranged in an "L"-shaped structure.

[0012] As a preferred solution of the present invention, the adjustment slot is adapted to correspond to the extrusion rod.

[0013] As a preferred solution of the present invention, the clamping groove and the clamping plate are adapted to correspond to each other.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the utility model, a connecting assembly is provided on a special cold extrusion core rod for a damaged plate hole containing a bushing, and an extrusion rod is extruded inwardly at the same time. The extrusion rod drives the first moving rod and the second moving rod to move inward respectively, and the first moving rod and the second moving rod drive the clamping plate to contract inwardly when they move inward. The extrusion core rod can be disassembled by moving the connecting block downward, and it can be installed by reverse operation. The installation and disassembly are relatively convenient, so when the extrusion core rod is worn, it is convenient to replace it. The overall device has a simple structure, is easy to operate and has higher practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall front view of the utility model;

[0017] Figure 2 This is an exploded view of part of the structure of the utility model;

[0018] Figure 3 This is the internal structure diagram of the connecting seat of the utility model.

[0019] In the figure: 1. Extrusion cylinder; 2. Extrusion core rod; 3. Connecting assembly; 301. Connecting seat; 302. First limiting slide rail; 303. Second limiting slide rail; 304. First limiting slider; 305. Second limiting slider; 306. First moving rod; 307. Second moving rod; 308. Snap-in plate; 309. Telescopic rod; 310. Fixed spring; 311. Extrusion rod; 312. Connecting block; 313. Snap-in groove; 314. Adjusting groove. DETAILED DESCRIPTION

[0020] The following will combine 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0025] A cold extrusion mandrel for damaged plate holes containing a bushing, comprising an extrusion cylinder 1, an extrusion mandrel 2 provided on the lower side of the extrusion cylinder 1, and a connecting component 3 provided between the extrusion cylinder 1 and the extrusion mandrel 2;

[0026] In this embodiment, the connecting component 3 includes a connecting seat 301, a first limiting slide rail 302 is provided on the upper rear side of the interior of the connecting seat 301, a second limiting slide rail 303 is provided on the lower rear side of the interior of the connecting seat 301, a first limiting slider 304 is slidably provided on the left side of the front of the first limiting slide rail 302 and the second limiting slide rail 303, a second limiting slider 305 is slidably provided on the right side of the front of the first limiting slide rail 302 and the second limiting slide rail 303, a first moving rod 306 is provided between the two first limiting sliders 304, and a first moving rod 306 is provided between the two second limiting sliders 305. A second moving rod 307 is provided, and a clamping plate 308 is provided at the lower end of the first moving rod 306 and the second moving rod 307. Telescopic rods 309 are symmetrically provided on the upper and lower sides between the first moving rod 306 and the second moving rod 307. A fixing spring 310 is sleeved on the left side of the outer wall of the telescopic rod 309. An extrusion rod 311 is provided on the inner side surfaces of the first moving rod 306 and the second moving rod 307. A connecting block 312 is provided on the lower side of the connecting seat 301, and a clamping groove 313 is provided on the base surface of the connecting block 312. An adjustment groove 314 is provided on the base surface of the connecting seat 301.

[0027] When the locking cam 314 is in the unlocking state, the locking cam 313 is locked and the locking cam 314 is locked, so the locking cam 313 is locked.

[0028] When the cam 312 is in the closed position, the first and second movable rods 306 and 307 are respectively driven by the cam 312 to move inward, so that the cam 312 can be easily removed.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold extrusion mandrel for damaged plate holes containing a bushing, comprising an extrusion cylinder (1), characterized in that: An extrusion core rod (2) is provided on the lower side of the extrusion cylinder (1), and a connecting component (3) is provided between the extrusion cylinder (1) and the extrusion core rod (2); The connecting assembly (3) comprises a connecting seat (301), a first limiting slide rail (302) is provided on the upper rear side of the connecting seat (301), a second limiting slide rail (303) is provided on the lower rear side of the connecting seat (301), a first limiting slider (304) is provided on the left side of the front of the first limiting slide rail (302) and the second limiting slide rail (303), a second limiting slider (305) is provided on the right side of the front of the first limiting slide rail (302) and the second limiting slide rail (303), a first moving rod (306) is provided between the two first limiting sliders (304), and a second moving rod (306) is provided between the two second limiting sliders (305). The movable rod (307) is provided with a clamping plate (308) at the lower end of the first movable rod (306) and the second movable rod (307), and telescopic rods (309) are symmetrically provided on the upper and lower sides between the first movable rod (306) and the second movable rod (307). A fixed spring (310) is sleeved on the left side of the outer wall of the telescopic rod (309), and an extrusion rod (311) is provided on the inner side surface of the first movable rod (306) and the second movable rod (307). A connecting block (312) is provided on the lower side of the connecting seat (301), and a clamping groove (313) is provided on the base surface of the connecting block (312). An adjusting groove (314) is provided on the connecting seat (301).

2. The cold extrusion mandrel for damaged plate holes containing a bushing according to claim 1, characterized in that: The driving end of the extrusion cylinder (1) is fixedly connected to the base surface of the connecting seat (301).

3. The cold extrusion mandrel for damaged plate holes with a built-in bushing according to claim 1, characterized in that: The lower end of the connecting block (312) is connected to the upper end of the extrusion core rod (2).

4. The cold extrusion mandrel for damaged plate holes with a built-in bushing according to claim 1, characterized in that: The extrusion rod (311) is arranged in an "L"-shaped structure.

5. The cold extrusion mandrel for damaged plate holes with a built-in bushing according to claim 1, characterized in that: The adjustment groove (314) is adapted to correspond to the extrusion rod (311).

6. The cold extrusion mandrel for damaged plate holes with a built-in bushing according to claim 1, characterized in that: The clamping groove (313) is adapted to correspond to the clamping plate (308).

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