WO1994004311A1 - Non-contact profile control method - Google Patents
Non-contact profile control method Download PDFInfo
- Publication number
- WO1994004311A1 WO1994004311A1 PCT/JP1993/001113 JP9301113W WO9404311A1 WO 1994004311 A1 WO1994004311 A1 WO 1994004311A1 JP 9301113 W JP9301113 W JP 9301113W WO 9404311 A1 WO9404311 A1 WO 9404311A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tracer head
- contact
- model
- contour
- control method
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
- B23Q35/12—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means
- B23Q35/127—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means using non-mechanical sensing
Definitions
- the present invention relates to a non-contact profile control method for non-contact three-dimensional model shapes, and more particularly to a non-contact profile control method for performing a contour profile operation.
- This non-contact distance detector uses an optical distance detector, which is fixed to the tip of the tracer head to detect the distance to the model surface. Since there is no risk of damaging the model, it is possible to use a model made of a soft material, and it is expected that the field of application in contour machining will be expanded.
- non-contact profile control device there is Japanese Patent Application Laid-Open No. 3-60956 by the present applicant.
- a non-contact sensor can be attached to the rotating shaft to perform a surface profile operation to follow the model surface.
- the contouring operation has a contour contour separate from this surface contour. Contour contouring can also be performed using this non-contact contouring control device.
- FIG. 3 is a diagram illustrating the operation of the non-contact sensor when contouring is performed using the non-contact sensor.
- the tracer head 4 is tilted by an angle of 45 ° with respect to the Z-axis and is a non-contact sensor.
- a distance detector 5a is attached, and the tracer head 4 is rotated by a servomotor 32c. That is, the rotation control is performed so that the distance detector 5a coincides with the vertical plane including the normal line of the model 6.
- a distance detector 5b is attached so as to overlap with the outside of the distance detector 5a.
- cables 7a and 7b are connected to the distance detectors 5a and 5b.
- the distance detectors 5a and 5b are controlled so as to face the vertical plane including the normal of the measurement point of the model 6, when the tracer head 4 turns around the model 6 due to the contour, The distance detectors 5a and 5b also make one rotation. Therefore, if the contouring is continued, the cables 7 a and 7 b wind around the tracer head 4. Disclosure of the invention
- the present invention has been made in view of such a point, and provides a non-contact profile control method in which a cable of a non-contact sensor does not wind around a tracer head even when contouring is continued. With the goal.
- a non-contact sensor is provided on a rotating shaft at a predetermined inclination angle, and the model shape is provided by the non-contact sensor.
- a non-contact profile control method wherein the non-contact sensor reversely rotates to perform a contour profile when the non-contact sensor is turned by a predetermined rotation angle or more. , Provided. When the non-contact sensor is rotated by a predetermined angle or more, the non-contact sensor is rotated in reverse, so that the cable of the non-contact sensor does not wind around the tracer head.
- Fig. 1 is a block diagram showing the configuration of the copying control device and the machine tool.
- Fig. 2 is a flowchart of the process for controlling the return rotation of the tracer head.
- FIG. 3 is a diagram showing the operation of the non-contact sensor when contouring is performed using the non-contact sensor.
- FIG. 1 is a block diagram showing the configuration of a copying control device and a machine tool.
- the processor 11 reads the system program stored in the ROM 12 via the bus 10 and controls the entire operation of the copying control device 1 according to the system program.
- RAM 13 is a temporary storage device for data, which stores measurement data from a non-contact distance detecting mechanism of a machine tool, which will be described later, and other temporary data.
- the non-volatile memory 14 is backed up by a battery (not shown), and various parameters such as a direction, a speed, and the like input from the operation panel 2 via the interface 15 are provided. And the like are stored.
- the tracer head 4 of the copying machine tool 3 is provided with distance detectors 5a and 5b.
- the distance detectors 5a and 5b are of a reflected light type using a semiconductor laser or a light emitting diode as a light source. Non-contact sensors are used.
- the measured values L a and L b of the distance to the model surface along the measurement axes 4 a and 4 b are sequentially read by the processor 11.
- the processor 11 calculates the amount of displacement of each axis based on the read digital value and the signals from the current position registers 19x, 19y, and 19z, which will be described later. Based on the tracing direction and the tracing speed, velocity commands Vx, Vy and Vz for each axis are generated by a known technique. These speed commands are input to the servo amplifiers 18x, 18y and 18z.
- the servo amplifiers 18X and 18y drive the servomotors 32X and 32y of the machine tool 3 based on the speed command, thereby moving the table 31 perpendicular to the X-axis direction and the paper plane. Move in the Y axis direction.
- the servo amplifier 18 z drives the servo motor 32 z to move the tracer head 4 and the tool 34 in the Z-axis direction.
- the servomotors 3 2 X, 3 2 y and 3 2 z have pulse coder 3 3 x, 3 3 y and 3 3 z which generate detection pulses FP x, FP y and FP z, respectively, each time they rotate a predetermined amount. Is provided.
- the current position registers 19 X, 19 y, and 19 z in the digitizing control device 1 count the detection pulses FPX, FP y, and FP z according to the rotation direction, and Z-down each axis direction.
- the current position data Xa, Ya and Za are obtained and input to the processor 11 as control data.
- the processor 11 samples the measured values La and Lb of the distance detectors 5a and 5b at a predetermined sampling time at the same time as controlling the above axes, and uses the sampled values on the model surface. Find the normal vector of. Then, distance detection is performed on the vertical plane containing this normal vector.
- the rotation command SC is output so that the measuring axes 4a and 4b of the output units 5a and 5b are aligned.
- the servo amplifier 18c drives the servomotor 32c based on the rotation command SC to control the rotation while tilting the measuring axes 4a and 4b of the distance detectors 5a and 5b by a predetermined angle around the Z axis. I do.
- the table 31 is moved in the direction and at the same speed according to the command, and the same shape as the model 6 is machined on the work 35 by the tool 34 that is controlled in the Z-axis similarly to the tracer head 4. Will be applied. That is, a contour profiling operation is performed.
- Figure 2 is a flow chart of the process for controlling the return rotation of the tracer head.
- the numeral following S indicates the step number.
- [S1] Monitor whether tracer head 4 has made a round of the model, and-goes to S2. Since the pick feed is performed every time the model makes a round in the normal contour all around, the tracer head 4 may make a round of the model 6 during the pick feed.
- the cables 7a and 7b do not wind around the tracer head 4, and the contouring operation can be performed continuously.
- the tool 34 may stop during the reverse rotation operation and a cutter mark or the like may be attached to the workpiece. Then, using the NC data, the workpiece 35 can be processed more accurately if it is processed.
- the tracer head performs the return operation every time the circuit goes around the model, so that the cable of the non-contact sensor does not wind around the tracer head.
- Contour profiling control by a non-contact sensor can be performed continuously.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Copy Controls (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22102392A JPH0663850A (ja) | 1992-08-20 | 1992-08-20 | 非接触ならい制御方法 |
JP4/221023 | 1992-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994004311A1 true WO1994004311A1 (en) | 1994-03-03 |
Family
ID=16760281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/001113 WO1994004311A1 (en) | 1992-08-20 | 1993-08-06 | Non-contact profile control method |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0663850A (ja) |
WO (1) | WO1994004311A1 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57194859A (en) * | 1981-05-21 | 1982-11-30 | Mitsubishi Electric Corp | Profiling controlling device |
JPS6116613U (ja) * | 1984-07-03 | 1986-01-30 | 神鋼電機株式会社 | 2個のリミツトスイツチによる位置決め装置 |
JPS613622B2 (ja) * | 1979-08-07 | 1986-02-03 | Shin Nippon Koki Co Ltd | |
JPS6210806Y2 (ja) * | 1980-12-26 | 1987-03-14 | ||
JPS62172594U (ja) * | 1986-04-21 | 1987-11-02 | ||
JPS63278747A (ja) * | 1987-05-12 | 1988-11-16 | Fanuc Ltd | 輪郭部分倣い方式 |
JPH0155943B2 (ja) * | 1985-04-23 | 1989-11-28 | Fanuc Ltd | |
JPH0360956A (ja) * | 1989-07-27 | 1991-03-15 | Fanuc Ltd | 非接触ならい制御装置 |
-
1992
- 1992-08-20 JP JP22102392A patent/JPH0663850A/ja active Pending
-
1993
- 1993-08-06 WO PCT/JP1993/001113 patent/WO1994004311A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS613622B2 (ja) * | 1979-08-07 | 1986-02-03 | Shin Nippon Koki Co Ltd | |
JPS6210806Y2 (ja) * | 1980-12-26 | 1987-03-14 | ||
JPS57194859A (en) * | 1981-05-21 | 1982-11-30 | Mitsubishi Electric Corp | Profiling controlling device |
JPS6116613U (ja) * | 1984-07-03 | 1986-01-30 | 神鋼電機株式会社 | 2個のリミツトスイツチによる位置決め装置 |
JPH0155943B2 (ja) * | 1985-04-23 | 1989-11-28 | Fanuc Ltd | |
JPS62172594U (ja) * | 1986-04-21 | 1987-11-02 | ||
JPS63278747A (ja) * | 1987-05-12 | 1988-11-16 | Fanuc Ltd | 輪郭部分倣い方式 |
JPH0360956A (ja) * | 1989-07-27 | 1991-03-15 | Fanuc Ltd | 非接触ならい制御装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0663850A (ja) | 1994-03-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5243265A (en) | Non-contact tracing control apparatus | |
US5140239A (en) | Non-contact tracer control device | |
EP0446370B1 (en) | Non-contact profile control apparatus | |
US5266811A (en) | Digitizing control equipment utilizing normal vector calculations and a position sensor | |
EP0494314B1 (en) | Non-contact copy control device | |
KR950014515B1 (ko) | 비접촉 디지타이징(digitizing) 제어 장치 | |
US5247233A (en) | Digitizing control device for generating tracing data | |
JPH0531653A (ja) | 非接触倣い制御方式 | |
WO1992011974A1 (en) | Non-contact digitizing method | |
US5274563A (en) | Noncontact tracing control system | |
WO1994004311A1 (en) | Non-contact profile control method | |
JPH05253804A (ja) | 非接触ならい制御装置 | |
JP2542615B2 (ja) | 加工線テイ−チング方法 | |
JPH0679588A (ja) | 非接触ならい制御装置 | |
JPS63244203A (ja) | 計測点デ−タ取得方法 | |
JPH04331038A (ja) | 自動切削プログラミング方法 | |
JPH068112A (ja) | 非接触倣い制御方法 | |
JPH0639037B2 (ja) | 工作機械主軸のc軸原点設定方法及び装置 | |
JPS62221005A (ja) | 数値制御工作機械 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1994 211525 Date of ref document: 19940405 Kind code of ref document: A Format of ref document f/p: F |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase | ||
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1995 489620 Date of ref document: 19950612 Kind code of ref document: A Format of ref document f/p: F |