Method and machine tool for machining and hardening metallic workpieces

A technology for metal workpieces and workpieces, applied in the field of machining and hardening metal workpieces, can solve problems such as reprocessing and lowering of processing quality, and achieve the effects of saving costs, shortening processing time, and high cutting speed

Inactive Publication Date: 2013-10-02
5ME IP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, the crankshaft has undesired deformations after cooling, which reduces the machining quality and may result in the need for reworking

Method used

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  • Method and machine tool for machining and hardening metallic workpieces
  • Method and machine tool for machining and hardening metallic workpieces
  • Method and machine tool for machining and hardening metallic workpieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] For producing a hardened shaft-shaped workpiece 2 made of metal, the machine tool 1 has a base frame 3 on which three workpiece holders 4 to 6 and two machining devices 7 , 8 and a hardening device 9 are arranged.

[0030] The first workpiece holder 4 is designed as a workpiece spindle and has a chuck 10 which can be driven in rotation by means of a spindle drive motor 11 about an axis of rotation 12 extending parallel to the x-direction. The workpiece spindle 4 is arranged on the front face 13 of the base frame 3 and is linearly displaceable parallel to the x-direction. For this purpose, on the front face 13 , first x-guides 14 are arranged spaced apart from one another in the y-direction extending perpendicularly to the x-direction, on which guides the workpiece spindle 4 is mounted by means of a first x-slide 15 . The x-slide 15 can be moved linearly along the x-rail 14 by means of a first x-drive motor 16 .

[0031] The second workpiece holder 5 is mounted on the x...

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PUM

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Abstract

The invention relates to a method and a machine tool (1) for machining and hardening metallic workpieces (2). The workpiece (2), clamped in workpiece holders (4 to 6), is first machined by means of a machining device (7, 8) and subsequently hardened by means of a hardening device (9). The machined workpiece (2) is, for hardening purposes, first heated by means of a heating unit (62) and subsequently quenched by means of a quenching unit (63). The quenching takes place using a cryogenic coolant, such as, for example, liquid or gaseous nitrogen. High machining quality and low machining and cycle times are achieved by machining and hardening the workpiece (2) in a clamp and rapidly quenching the heated workpiece (2).

Description

technical field [0001] The invention relates to a method and a machine tool for machining and hardening metal workpieces. Background technique [0002] A machine tool for machining crankshafts is known from DE 197 49 939 C2 (corresponding to US 6 684 500 B1), in which the crankshaft is machined in a holding device and subsequently hardened. For hardening, the crankshaft is heated by means of a laser or an inductor. Disadvantageously, the crankshaft has undesired deformations after cooling, which reduces the machining quality and may require reworking. Contents of the invention [0003] The object of the present invention is to propose a method which enables simple machining and hardening of metal workpieces with a high machining quality. [0004] This object is achieved by a method having the features of claim 1 . The workpiece to be machined is machined and hardened in one clamping unit. For hardening, the processed workpiece is heated in a conventional manner and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P25/00B23Q11/10C21D9/30B23B5/08
CPCB23B5/08B23P23/04B23P25/00B23Q11/1053B23Q11/1061B23Q17/005B23Q39/024B23Q2039/008C21D1/18C21D1/56C21D1/60C21D1/613C21D9/30C21D9/32Y10T29/5109B23Q11/10
Inventor M·I·梅达尔W·霍恩H·朗
Owner 5ME IP
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