Clamping fixture for clamping the outer tube of a hydraulic cylinder

Abstract

The invention relates to the technical field of welding fixtures, and specifically proposes a clamping fixture for the outer tube of a hydraulic cylinder. The fixture includes a workbench, a rotary fixture platform assembled on the workbench, and The nozzle positioning fixture on the top; the rotary fixture table includes a rotary table mechanism assembled on the workbench, and the rotary table mechanism includes a rotary platform installed for vertical rotation, and the rotary platform is provided with a cylinder circle The synchronous positioning fixture for the axial alignment of the cylinder part and the flange plate, the upper end surface of the slewing platform is provided with a pressing mechanism for pressing the cylindrical part of the cylinder and the flange plate; the tooling fixture provided by the invention can be used as a hydraulic The use of cylinder cylinder welding positioning fixture can replace manual to realize the rapid and automatic alignment of welding parts, which solves the trouble of manual adjustment, as well as the problems of uncontrollable error and unreliable accuracy in the manual adjustment process.

Description

technical field [0001] The invention relates to the technical field of welding fixtures, and specifically provides a hydraulic oil cylinder outer tube and cylinder clamping fixture. Background technique [0002] Hydraulic cylinder is also called hydraulic cylinder. Hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion; hydraulic cylinder consists of cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device and exhaust. The composition of the gas device. [0003] The outer tube cylinder of the hydraulic cylinder, as the name implies, is a metal shell with a tube structure located in the outermost layer of the hydraulic cylinder. According to different structural designs, the structure of the outer tube cylinder of the hydraulic cylinder is different, such as Figure 11 Shown is a type of cylinder structure with the characteristics shown in the f...

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Problems solved by technology

[0003] The outer tube of the hydraulic cylinder, as the name implies, is a metal shell located on the outermost layer of the hydraulic cylinder with a tube structure. According to different structural designs, the structure of the outer tube of the hydraulic cylinder is different, such as Figure 11 Shown is a type of cylinder structure that has the features shown in the figure and differs only in diameter or length. The cylinder body consists of a cylinder part, a flange at one end of the cylinder part, and a The two nozzles on the side wall of the cylinder are composed of two nozzles, the flange is used for the fixed installation of the hydraulic cylinder, and the two nozzles are the inlet and outlet connections of the two hydraulic pipes in the hydraulic cylinder in the hydraulic system; When forming the cylinder of this type of structure, the flange plate and the two nozzles are independent structures, which need to be welded with the cylindrical part of the cylinder structure by welding. In the actual welding process , mostly completed by manual welding, but there are the following disadvantages in manual welding: 1. The hydraulic cylinder itself is a precision device that requires high assembly accuracy, so welding accuracy needs to be considered during welding processing, and for flanges and cylinders For the butt welding of the end of the cylindrical part, it is especially necessary to pay attention to the axial alignment of the flange and the cylindrical part of the cylinder. During manual welding, it is usually adjusted by manual placement, but the accuracy of manual adjustment is not reliable. The error is uncontrollable, and the flange and the cylindrical part of the cylinder are usually not aligned and pressed during welding, so it is easy to cause deviation during the welding process, and at the same time, the welding heat deformation of the material at the welding interface cannot be suppressed

[0004] 2. For the welding of the nozzles, since the two nozzles are welded on the arc side wall of the cylinder, the welding positioning of the nozzles is troublesome, and it is necessary to manually adjust and align the welding positions one by one.

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