Connector for joint double offset ring ratchet spanner and manufacturing method thereof

Abstract

The invention discloses a connector for a joint double offset ring ratchet spanner and a manufacturing method thereof. Because the connector is manufactured by a powder metallurgy technology, the problem that the connector is difficult to machine is solved, the dimensional accuracy of the connector and particularly the surface roughness of a semilunar groove are greatly improved to decisively prolong the service life of the connector, and the dimensional accuracy of the connector can be controlled in a range of 0.05mm. Moreover, the dimension of a countersunk hole of the connector is stably controlled, the subsequent assembly speed efficiency is improved by over 120 percent compared with the original efficiency, and the manufacturing method is superior to other manufacturing methods; and the manufacturing method is low in process cost, the raw material utilization rate is over 99 percent, energy consumption is low, equipment investment is 200,000 yuan, one person is needed, daily production is over 3,000 pieces by a two-cavity mold, a multi-cavity mold can be realized, and one mold with 16 cavities can be realized at most at present. The connector is assembled into a product according to the specified requirement and is subjected to series performance tests according to the requirements of American standard ANSI-2002 'tool performance test method', the torsion of the spanner is 1.4 times that of the American standard, and the service life of the spanner is over 2 times that of the American standard.

Description

technical field [0001] The invention relates to a articulated torx ratchet wrench, in particular to a connection head of the articulated torx ratchet wrench; the invention also relates to a manufacturing method of the connection head. Background technique [0002] figure 1 and figure 2 Shown is a joint ring ring wrench, comprising a wrench handle 1, at least one end of the wrench handle 1 is hinged with a connector 2 (see image 3 ), the connecting head 2 can rotate a certain angle around the hinge axis to facilitate the installation and removal of bolts or nuts. The connecting head 2 is provided with a round hole 21, and the annular ratchet 3 that can engage and drive the bolt or nut is housed in the described round hole 21. The inner wall of the described round hole 21 is also provided with a half-moon groove 22, and the half-moon groove 22 is used to place a ratchet block 23, the teeth on the ratchet block 23 are matched with the ratchet teeth on the outer peripheral ...

AI Technical Summary

Problems solved by technology

[0003] The connectors in the prior art are processed by hot forging process: blanking - forging - electric furnace heating - precision forging - edge trimming - sandblasting - grinding and polishing - punching - turning - pulling - drilling - milling and other 21 procedures to complete , its disadvantages are: the utilization rate of raw materials is low, only 40% can be utilized, and the others are sold as rough scraps, and the efficiency can only reach 60%.

Twenty-one process transfers are many times, consuming manpower, material and financial resources, poor processing accuracy, poor process stability, minimum control tolerance 0.1mm, 90% first-time forging yield, and 70% first-time machining yield

A processing line requires 14 people, with a daily output of about 5,000 pieces. The price of domestic equipment will drop slightly, and the equipment will cost 700,000 to 800,000 yuan. The production capacity will also decrease, and the precision will decrease. The daily output will be about 3,000 pieces, and the investment will be large and the personnel will be more efficient. Low, low material utilization, poor quality

Images