METHOD OF CUTTING IN WORKING CAM SHAFT

Title:

METHOD OF CUTTING IN WORKING CAM SHAFT

Document Type and Number:

WIPO Patent Application WO/1992/007690

Kind Code:

A1

Abstract:

A method of cutting in working a cam shaft which is capable of reducing fluctuations in cutting load acting on a workpiece so as to improve precision in working without lowering operation efficiency. The method comprises such steps that: the circumference of the workpiece (1) having a cutting allowance (STK) almost uniform in thickness along the full length is divided into a plurality of blocks at equal angles; areas (S1, S2, ... Sn) of cut blocks are numerically analyzed for each block from data on lift of the workpiece (1) and the dimension (b) of the cutting allowance (STK); and the workpiece (1) is cut while NC instruction values relating to the rotational speed of the workpiece (1) in each block are controlled so that an area to be cut per unit time in each of the blocks is almost equal.

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JP5838680	Machining error calculation device, machining error calculation method, machining control device and machining control method
JPS6090654	SPEED CONTROL FOR MAIN SPINDLE OF MAIN-SPINDLE TRANSFER TYPE NC LATHE

Inventors:

HAZAMA MASANORI (JP)

Application Number:

PCT/JP1991/001502

Publication Date:

May 14, 1992

Filing Date:

November 01, 1991

Export Citation:

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Assignee:

KOMATSU MFG CO LTD (JP)

International Classes:

B23Q15/08; B23C3/08; B24B19/12; G05B19/18; (IPC1-7): B23C3/08; B23Q15/10; B24B19/12

Foreign References:

JPS6354512B2	1988-10-28
JPS569156A	1981-01-30
JPS6130862B2	1986-07-16
JPS52101796A	1977-08-26
JPS5944178B2	1984-10-27
JP54021598B
JPS5554167A	1980-04-21
US4373301A	1983-02-15

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