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

A ratchet wrench and connector technology, applied to wrenches, manufacturing tools, wrenches, etc., can solve the problems of poor machining accuracy, efficiency can only reach 60%, and decreased precision, and achieve dimensional accuracy and surface roughness improvement, raw material utilization The effect of high efficiency and stable size control

Inactive Publication Date: 2011-10-19
王峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, po...

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The connection head of the joint plum blossom ratchet wrench, the connection head is a powder metallurgy connection head.

[0026] The connecting head of the joint ring ratchet wrench, based on the weight percentage, the chemical composition of the connecting head includes 0.1-10% nickel; 0.1-5% molybdenum; 0.1-1.0% carbon; the balance is iron.

[0027] Prepare the metal powder containing the chemical components, based on weight percentage, carbonyl nickel powder accounts for 0.1-10% of the entire metal powder, reduced molybdenum powder accounts for 0.1-5% of the entire metal powder, and carbon accounts for 0.1-5% of the entire metal powder 1.0%, the remainder is carbonyl iron powder. Metal powder requirements: particle size 2-8um; bulk density 40-50%; tap density 50%; powder shape nearly spherical; aspect ratio 1.2-1.5. Metal powder is produced by hydroxyl method and atomization method.

[0028] Prepare the binder for forming. The binder cannot be separated from the ...

Embodiment 2

[0033] This embodiment is basically the same as the first embodiment, except that the chemical composition of the connecting head of the joint ring wrench is different.

[0034] In this embodiment, based on weight percentage, the chemical composition of the connector includes:

[0035] Nickel 3-5%; Chromium 15.5-17.5%; Carbon 0-0.07%; Copper 3-5%; Niobium + Tantalum 0.15-0.45%; Manganese 0-1.0%; Silicon 0-1.0%;

[0036] In this embodiment, a 17-4PH stainless steel connector can be manufactured, and the 17-4PH stainless steel metal powder is a metal powder produced by water atomization or gas atomization.

Embodiment 3

[0038] This embodiment is basically the same as the first embodiment, except that the chemical composition of the connecting head of the joint ring wrench is different.

[0039] In this embodiment, based on weight percentage, the chemical composition of the connector includes 10-14% nickel; 16-18% chromium; 2-3% molybdenum; 0-0.03% carbon; 0-2.0% manganese; -1.0%; balance iron.

[0040] In this embodiment, a 316L stainless steel connector can be manufactured, and the 316L stainless steel metal powder is produced by water atomization or gas atomization.

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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 ...

Claims

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Application Information

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IPC IPC(8): B25B23/00B22F3/22
Inventor 王峰高光辉
Owner 王峰
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