Title:
【発明の名称】デジタイジング方法
Document Type and Number:
Japanese Patent JPH074739
Kind Code:
B2
Abstract:
PCT No. PCT/JP86/00339 Sec. 371 Date Feb. 12, 1987 Sec. 102(e) Date Feb. 12, 1987 PCT Filed Jul. 1, 1986 PCT Pub. No. WO87/00266 PCT Pub. Date Jan. 15, 1987.A digitizing method for obtaining data indicative of the three-dimensional shape of an object by effecting movement along at least one axis (X or Y axis) under numerical control on the basis of path data and along another axis (Z) under tracer control and monitoring the present position along each axis. A numerial control unit performs numerical control to moving a tracer head in X and Y directions. A tracer control unit generates a Z-axis velocity command Vz to move the tracer head along the Z axis. The numerical control unit counts pulses generated by a motor driving a tracer control axis to obtain the present position along the tracer control axis. The numerical control unit also obtains a commanded position along each numerical control axis (X,Y axes) by using the path data, and obtains a present position, represented by a machine position, by substracting an amount of servo-system delay (i.e., the contents of error registers) from the commanded position. Thereafter, each axial present position, represented by a machine position, is stored in a memory at predetermined time intervals.
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Inventors:
Aramaki Hitoshi
Application Number:
JP14415785A
Publication Date:
January 25, 1995
Filing Date:
July 01, 1985
Export Citation:
Assignee:
Fanatsk Co., Ltd.
International Classes:
G01B21/20; B23Q35/12; G05B19/18; G05B19/404; G05B19/408; G05B19/4097; G05B19/42; G06K11/00; (IPC1-7): B23Q35/12
Domestic Patent References:
| JP56116117A | ||||
| JP59192445A |
Attorney, Agent or Firm:
Chika Saito