Handheld pneumatic lining press mounting gun

Abstract

The invention discloses a handheld pneumatic press mounting gun and aims at providing a pneumatic press mounting gun which is easy, convenient and fast to operate, high in safety and large in concentrated impact force. The handheld pneumatic lining press mounting gun is achieved through the following technical scheme that high-pressure air flow is divided into two ways, one way of the air flow achieves energy gathering through a circular array oblique hole in the tail portion of an end cover (3), the end cover is driven to conduct the circular motion, Laval rotating air flow is sent into a gunbarrel dynamic pressure cavity, and an impact piston (5) impacts a piston impact rod (10) along a gun barrel sliding pipe channel through a piston bearing (6). The other end of air flow passes through a cone circular array busbar oblique hole of a conical air cylinder (4) and enters a piston bearing end direction circular array hole, Laval high-pressure concentrated air flow impacting a piston impact rod spring seat is formed, high-pressure energy gathering air flow for impacting the piston impact rod to move along the gun barrel sliding pipe channel in an accelerated manner is formed again,a piston impact rod end direction lining punch head (11) is pushed at a high speed, a pillar at the front end of the end direction impact lining punch head penetrates into a lining, and a lining workpiece is perpendicularly pressed into a lining workpiece inner hole.

Description

technical field [0001] The invention relates to a crimping tool for mechanical manufacturing, in particular to an interference fit device for press-fitting various types of bushes, drill sleeves, bearings and shaft sleeves. The rapid pneumatic bushing device with high concentrated impact force is specifically to press the bushing and drill bushing into the hole accurately, efficiently and quickly, so as to meet the technical requirements for processing parts. Background technique [0002] Press-fit technology is widely used in machinery manufacturing industry, and it belongs to the category of interference connection. The bushing is a press-fit workpiece with a large amount of use in the machine industry. The inside of the bushing aperture is a metal cylinder, and sometimes the outside is wrapped with a rubber layer. Bushings generally have pilot ports, usually press-fitted flush with the top surface, to more tightly fit the bushing head bushing together. Usually the toler...

AI Technical Summary

Problems solved by technology

The original press-fitting method mainly presses the bushing or drill bushing into the hole by manual beating by workers. The disadvantage of this method is that manual control is difficult, and the force is uneven, which is easy to cause bias, bias, or even It is difficult to ensure the verticality of the axial direction due to crooked pressure

This kind of bushing press that uses liquid as a medium to transmit energy, the hydraulic system is located in the fuselage, is guided by four-column guide posts, and the fuselage is a C-shaped single-arm structure has the disadvantages of complex structure and high manufacturing cost. , bulky, fixed installation on the site ground, immovable, easily restricted by the environment and site, can only be pressed into the shaft sleeve, requires a discharge mechanism, and is inconvenient to use

The disadvantage of manually operated press-fitting equipment is that manual feeding, oiling and other auxiliary adjustments are required for each press-fitting, which has low work efficiency and high labor intensity; secondly, the consistency of bushing press-fitting quality and press-fitting The safety of the process also needs to be improved; in addition, when there is a problem with the press-fitting of the bushing, other equipment is required to take out the front bushing by back pressure, which is time-consuming and laborious

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