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Method of manufacturing clamping jaws, clamping jaw and drill chuck

A manufacturing method and technology of drill chucks, applied in the direction of manufacturing tools, accessories of tool holders, parts of boring machines/drilling machines, etc., can solve the problems of expensive manufacturing and high cost

Inactive Publication Date: 2020-11-17
ROHM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These jaws with hard metal parts have been proven in practice, however, it is recognized that the manufacture of jaws with hard metal parts is expensive and costly compared to the manufacture of steel jaws. Shortcomings

Method used

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  • Method of manufacturing clamping jaws, clamping jaw and drill chuck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] exist figure 1 shows a clamping jaw 1 produced from a blank provided by cutting a round bar of steel, wherein the steel has a carbon content of more than 0.4% or is imparted to the steel by carburizing. The blank formed from the cylindrical pin 2 is formed with a rack 3 arranged for mating engagement with a thread on the drill chuck. Furthermore, on the side of the cylindrical pin 2 opposite the toothed rack 3 there is an axially offset clamping surface 4 that extends obliquely with respect to the axis of the pin, in the exemplary embodiment shown on which a clamping surface 4 is formed. Two clamping bevels 5 parallel to the tool shank to be clamped.

[0019] In order to improve the material properties of the cylindrical pin 2, different process steps, i.e. tempering, carburizing, nitriding and tempering, can be carried out alternatively or additively, so that the clamping jaw 1 obtains the desired properties, i.e. the rack High toughness in the region of 3 and deform...

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PUM

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Abstract

A method of manufacturing clamping jaws for drill chucks, in which a pin is provided made from a blank, on which are formed a row of teeth furnished for engaging in a thread associated with the drillchuck and, axially offset on the side of the pin opposite the row of teeth, a clamping surface extending at an angle to the axis of the pin; in which at least one of the steps of quenching, carburizing, nitriding, and annealing is carried out to improve the material properties of the pin; and in which additional hardening is subsequently carried out in at least one region of the clamping jaws. Theinvention also relates to a clamping jaw and to a drill chuck having such clamping jaws.

Description

technical field [0001] The invention is made by a method of manufacturing jaws for drill chucks in which a pin is provided from a blank in which a toothed rack for mating engagement with a thread on a drill chuck is formed and in which On the side opposite the toothed rack, a clamping surface extending obliquely relative to the axis of the pin is formed axially offset, wherein at least the process steps of hardening and tempering, carburizing, nitriding, and tempering are carried out in order to improve the material properties of the pin One of them, and then additional hardening is carried out in at least one region of the jaws. In addition, the invention also relates to a jaw and a drill chuck. Background technique [0002] For safe drilling operations, it is important that the shank of the workpiece or tool to be clamped is firmly and reliably clamped by the jaws, which must be guaranteed for the entire service life of the drill chuck, which is not It should be shortene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23B31/12
CPCB23P15/00B23B31/1215B23B2231/44B23B2222/28
Inventor P·申克H·鲍曼S·卡普特
Owner ROHM CO LTD