WO2000035631A1 - Verfahren und schleifmaschine zur prozessführung beim schälschleifen eines werkstückes - Google Patents
Verfahren und schleifmaschine zur prozessführung beim schälschleifen eines werkstückes Download PDFInfo
- Publication number
- WO2000035631A1 WO2000035631A1 PCT/EP1999/009703 EP9909703W WO0035631A1 WO 2000035631 A1 WO2000035631 A1 WO 2000035631A1 EP 9909703 W EP9909703 W EP 9909703W WO 0035631 A1 WO0035631 A1 WO 0035631A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grinding
- workpiece
- grinding wheel
- sensor
- machine
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50062—Measure deviation of workpiece under working conditions, machine correction
Definitions
- the invention relates to a method and a grinding machine for process control when peeling a workpiece according to the preamble of claim 1 and preamble of claim 9.
- the object of the invention is therefore to provide a method and a grinding machine by means of which during the peeling grinding process can be continuously corrected reliably to a desired diameter to be ground, which or which can be used industrially and in which or which the measuring method used for the LN process measuring and process control method or the measuring device used therefor does not require an extension of the processing time.
- the method according to the invention represents a method for process control during peeling grinding of a workpiece by means of a grinding wheel on a grinding machine.
- the workpiece is measured continuously or continuously to the present actual size during grinding by means of a sensor and in parallel, ie at the same time, the measured The actual dimension is continuously corrected automatically to a predetermined grinding time-dependent target dimension.
- This means that the correction of the actual dimension to the target dimension to be achieved on the basis of the measured actual dimension takes place in real time control of the grinding machine, ie in an LN process control.
- Such a real-time control prevents the workpiece to be ground from being undersized. The This can significantly reduce the error rate in the manufacture of the workpieces.
- the grinding process can be actively influenced by the real-time control in such a way that the heat input introduced into the workpiece by the grinding wheel is reduced or optimized, as a result of which, on the one hand, the thermal deformations on the workpiece, which can also lead to inaccuracies in the actual dimensions of the workpiece. are reducible and at the same time the wear of the grinding wheel can be reduced. This means that optimal grinding conditions can be achieved overall.
- the target dimension is preferably specified as a time-dependent target value curve.
- the time-dependent setpoint curve is stored in a memory unit, which is preferably part of the machine control. filed. According to the setpoint curve, a correction is then made after permanent or continuous determination of the respective actual dimension, so that the grinding wheel approaches the setpoint curve depending on the grinding time so that the desired final contour is achieved on the workpiece.
- the actual dimension is measured directly in the area where the grinding wheel engages the workpiece.
- “Immediately in the area of the engagement of the grinding wheel” should be understood to mean that a measuring sensor emitting the measured value in the form of a measuring signal is arranged essentially in one plane, which is formed by the engagement point of the grinding wheel encircling the workpiece advantageously achieved that the measurement is carried out directly at the point on the workpiece at which the workpiece is being ground, so that with the slightest deviations from the setpoint curve, a correction in the direction of the setpoint curve can be carried out immediately to avoid undersize via the machine control.
- the continuously measured actual dimension is preferably transmitted as a measuring signal to a machine control, the correction to the target dimension then taking place on the basis of this measuring signal.
- a method is thus provided in which an IN process control for peeling grinding is implemented.
- the grinding wheel is corrected to a desired diameter of the workpiece during grinding.
- the workpiece to be ground it is ground at least in one section in a cylindrical or conical manner. This means that with the described method, it is possible to grind both cylindrical and conical workpieces on their outer contour to a defined desired setpoint curve with the greatest accuracy.
- the grinding wheel and measuring sensor are moved synchronously with one another on the workpiece.
- the grinding wheel and measuring sensor it is of course also possible for the grinding wheel and measuring sensor to be stationary and for the workpiece to be moved instead. In this case too, it is ensured that the grinding wheel and the measuring sensor are arranged with respect to one another in such a way that the measured value acquisition relates to the point on the workpiece at which the grinding process takes place directly.
- the grinding machine according to the invention which is used in particular to carry out the method described above, has a grinding wheel held on a grinding headstock for peeling grinding of a workpiece, which is held between a workpiece spindle and a tailstock spindle, a measuring sensor for detecting a just ground workpiece dimension and a machine control.
- the senor is arranged essentially in a plane formed by the engagement area of the grinding wheel rotating on the workpiece, whereby during the peeling grinding, measurement signals can be fed continuously to the machine control, which in turn controls the grinding wheel on the basis of these measurement signals so that the grinding process as IN process control is executable.
- the device according to the invention it is thus possible to influence the grinding process, ie the manner in which the grinding wheel engages on the workpiece, directly during the grinding process without time delay, ie in real time control, in such a way that the desired final dimensions of the workpiece are kept within the narrowest possible tolerance range can, so that an undersize of the workpiece, which is usually unacceptable, can be avoided.
- the senor is attached to a measuring head which is pivotally attached to the grinding headstock. Due to the pivoting attachment, the measuring head can be adapted to different diameters of the workpiece, which is always guaranteed. that the sensor is arranged on the measuring head so that it is always in the area of the plane formed by the point of engagement of the grinding wheel on the workpiece. According to a preferred development of the invention, the measuring sensor is arranged on the workpiece with respect to the engagement area of the grinding wheel, ie preferably essentially 180 ° with respect to the engagement area of the grinding wheel. However, it is also possible to arrange the sensor at a certain angular distance on the circumference of the workpiece.
- the Real-time process control according to the invention in connection with the machine control on the basis of the detected actual values, which are used for correcting the target values, it is possible to generate a desired target cylinder shape or target cone shape of the workpiece.
- the peeling grinding according to the invention can be used both for cylindrical workpiece shapes or workpiece sections and for conical workpieces or workpiece sections.
- FIG. 1 is a plan view of a grinding machine according to the invention in a schematic representation with indication of the immediate grinding area Y.
- FIG. 2 shows a section through the section plane A-A indicated in FIG. 1;
- Fig. 3 shows the detail view Y of the grinding area shown in Fig. 1 in an enlarged view.
- Fig. 1 is a schematic representation of a top view of an external cylindrical grinding machine, which works in the peeling grinding process (circumferential longitudinal grinding).
- peeling grinding process circumferential longitudinal grinding
- thin CBN grinding wheels with wear-resistant bonds are used in the axial direction.
- the peculiarity of the peeling grinding process is that the complete grinding allowance is usually removed in one work step using the longitudinal grinding process.
- the radial infeed of the grinding wheel 10 during grinding is equal to the radial grinding allowance on the workpiece 2.
- the external cylindrical grinding machine has a workpiece headstock 1 with a workpiece spindle 1A, a grinding table 3 and a tailstock 4 with a hydraulically displaceable tailstock quill 4A, which are arranged on a machine bed 5.
- the grinding table 3 is constructed in the front region 20 of the machine bed 5 on guides on which it can be moved axially in the direction of the CNC axis Z.
- the motor drive of this axis is not shown.
- the workpiece headstock 1 arranged on the grinding table 3 with the workpiece spindle 1A is driven by a motor, the workpiece spindle 1A having a tip on its front region for receiving and transmitting the rotational movement to the workpiece 2.
- the tailstock 4 with the hydraulically displaceable quill 4A is likewise built up on the grinding table 3, the quill 4A having a centering tip in the front area for receiving the workpiece 2.
- the workpiece 2 is clamped between the tips of the workpiece spindle 1A and the quill 4A, the central axes of the workpiece spindle 1A and the tailstock quill 4A and of the workpiece 2 being aligned exactly with one another.
- a grinding headstock 6 is constructed, which has hydrostatic guide elements for its storage.
- the housing of the grinding headstock 6 carries a grinding spindle 9 on which the grinding wheel 10 is received.
- a measuring device 11 On the housing of the grinding headstock 6, a measuring device 11 is attached, which has an arm, which is used to hold a measuring head 12 for measuring the diameter of the workpiece.
- One or more sensors 13 for detecting the actual diameter of the workpiece directly during grinding are arranged in the grinding area of the grinding wheel 10 in such a way that the diameter just ground is always measured. This makes it possible to record the measured value directly during machining and thus the diameter to be ground during the process. correct it if necessary.
- real-time control ie an IN process control, is also possible for peeling grinding (circumferential longitudinal grinding) according to this measuring method.
- FIG. 2 shows a side view in a basic representation corresponding to the sectional plane A-A from FIG. 1. From this it can be seen that a pivotable arm 22, which carries the measuring head 12 with the sensors 13 for detecting the diameter of the workpiece 2 to be ground, is built on the grinding headstock 6. The palpable measuring path of the sensors 13 is indicated by means of the arrows 14.
- the reference number 23 denotes the position of the arm 22 shown in the dashed position in the pivoted-back or pivoted-out position. In this swiveled-back position, the workpiece 2 can be removed from the grinding machine and a new workpiece can be clamped.
- the detail Y according to FIG. 1 is shown in an enlarged view in FIG. 3. It can be seen from this that the sensors 13 are arranged essentially opposite the direct engagement area of the grinding wheel 10 on the workpiece 2, the measuring head 12 carrying the respective sensor 13 or, if only one sensor 13 is provided, the sensor 13. This ensures that the exact, straight, ground diameter of the workpiece 2 is always measured and, by supplying a measurement signal corresponding to this measured value to the machine control system, the engagement position of the grinding wheel 10 can be corrected such that the outer diameter of the workpiece, more particularly a Bearing seat can be corrected to the desired size.
- the sensors 13 are arranged opposite to the thickness of the grinding wheel 10 so that the measured value immediately behind that Wear mark (wear edge) of the grinding wheel following the actual point of engagement of the grinding wheel is arranged. This means that the measured values are arranged on a peripheral line of the grinding wheel opposite the grinding wheel.
- the measurement by means of the sensors 13 takes place in such a way that measurements are continuously made while the grinding wheel 10 is being fed to the workpiece 10.
- the workpiece 2 is moved in the longitudinal direction according to the peeling grinding method with a certain feed. Measured values are continuously transmitted to the machine control so that the diameter of the workpiece to be ground can be continuously corrected during grinding.
- the measuring method according to the invention and the method of implementing grinding machines according to the invention can thus achieve considerably higher process reliability in peeling grinding than in the POST process control systems previously known in the prior art.
- the thermal behavior of the grinding wheel and workpiece relative to one another is optimized, since measurements are always taken during the actual grinding process and deviations from the setpoint can be compensated for immediately.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99966936A EP1137515B9 (de) | 1998-12-11 | 1999-12-09 | Verfahren und schleifmaschine zur prozessführung beim schälschleifen eines werkstückes |
CA002352754A CA2352754C (en) | 1998-12-11 | 1999-12-09 | Method and grinding machine for controlling the process during rough grinding of a workpiece |
US09/857,922 US6623332B1 (en) | 1998-12-11 | 1999-12-09 | Grinding machine and method for real-time dimension control |
DE59913265T DE59913265D1 (de) | 1998-12-11 | 1999-12-09 | Verfahren und schleifmaschine zur prozessführung beim schälschleifen eines werkstückes |
BR9916052-8A BR9916052A (pt) | 1998-12-11 | 1999-12-09 | Processo e máquina de retificação para a condução de processo durante a retificação de casca de uma peça a ser trabalhada |
JP2000587928A JP4824166B2 (ja) | 1998-12-11 | 1999-12-09 | 工作物の皮むき研削におけるプロセスガイドのための方法及び研削盤 |
AU22818/00A AU2281800A (en) | 1998-12-11 | 1999-12-09 | Method and grinding machine for controlling the process during rough grinding ofa workpiece |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19857364A DE19857364A1 (de) | 1998-12-11 | 1998-12-11 | Verfahren und Schleifmaschine zur Prozeßführung beim Schälschleifen eines Werkstückes |
DE19857364.2 | 1998-12-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000035631A1 true WO2000035631A1 (de) | 2000-06-22 |
WO2000035631B1 WO2000035631B1 (de) | 2000-08-17 |
Family
ID=7890852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/009703 WO2000035631A1 (de) | 1998-12-11 | 1999-12-09 | Verfahren und schleifmaschine zur prozessführung beim schälschleifen eines werkstückes |
Country Status (13)
Country | Link |
---|---|
US (1) | US6623332B1 (de) |
EP (1) | EP1137515B9 (de) |
JP (1) | JP4824166B2 (de) |
KR (1) | KR100688818B1 (de) |
CN (1) | CN100339184C (de) |
AU (1) | AU2281800A (de) |
BR (1) | BR9916052A (de) |
CA (1) | CA2352754C (de) |
CZ (1) | CZ298917B6 (de) |
DE (2) | DE19857364A1 (de) |
ES (1) | ES2262357T3 (de) |
RU (1) | RU2238182C2 (de) |
WO (1) | WO2000035631A1 (de) |
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JPH06134668A (ja) * | 1992-10-26 | 1994-05-17 | Toyoda Mach Works Ltd | 研削盤 |
JP3555146B2 (ja) * | 1993-08-05 | 2004-08-18 | 豊田工機株式会社 | 研削方法 |
JPH07256541A (ja) * | 1994-03-18 | 1995-10-09 | Nisshin Steel Co Ltd | 断面円形工作物の研摩方法 |
IT1279641B1 (it) * | 1995-10-03 | 1997-12-16 | Marposs Spa | Apparecchio per il controllo del diametro di perni di biella in moto orbitale |
EP1043120A1 (de) * | 1999-03-31 | 2000-10-11 | Nippei Toyama Corporation | Verfahren und Vorrichtung zum Schleifen eines Werkstücks |
-
1998
- 1998-12-11 DE DE19857364A patent/DE19857364A1/de not_active Withdrawn
-
1999
- 1999-12-09 DE DE59913265T patent/DE59913265D1/de not_active Expired - Lifetime
- 1999-12-09 CA CA002352754A patent/CA2352754C/en not_active Expired - Lifetime
- 1999-12-09 US US09/857,922 patent/US6623332B1/en not_active Expired - Lifetime
- 1999-12-09 AU AU22818/00A patent/AU2281800A/en not_active Abandoned
- 1999-12-09 JP JP2000587928A patent/JP4824166B2/ja not_active Expired - Lifetime
- 1999-12-09 BR BR9916052-8A patent/BR9916052A/pt not_active IP Right Cessation
- 1999-12-09 ES ES99966936T patent/ES2262357T3/es not_active Expired - Lifetime
- 1999-12-09 CZ CZ20012054A patent/CZ298917B6/cs not_active IP Right Cessation
- 1999-12-09 KR KR1020017007037A patent/KR100688818B1/ko active IP Right Grant
- 1999-12-09 EP EP99966936A patent/EP1137515B9/de not_active Expired - Lifetime
- 1999-12-09 WO PCT/EP1999/009703 patent/WO2000035631A1/de active IP Right Grant
- 1999-12-09 RU RU2001118827A patent/RU2238182C2/ru active
- 1999-12-09 CN CNB998143138A patent/CN100339184C/zh not_active Expired - Lifetime
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US5371975A (en) * | 1990-01-04 | 1994-12-13 | E. Lundmark Industrimatningar | Process and device for machine-working or rolls and similar workpieces |
US5347761A (en) * | 1991-09-18 | 1994-09-20 | Mitsubishi Jukogyo Kabushiki Kaisha | Method for determining the deformation of workpiece on grinding machine |
EP0562632A1 (de) * | 1992-03-27 | 1993-09-29 | Toyoda Koki Kabushiki Kaisha | Verfahren und Vorrichtung zum Schleifen eines Werkstückes |
US5773731A (en) * | 1995-05-23 | 1998-06-30 | Toyoda Koki Kabushiki Kaisha | Method and apparatus for detecting residual grinding amount |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102267071A (zh) * | 2011-08-01 | 2011-12-07 | 浙江瑞亨精密工具有限公司 | 一种外圆磨床 |
CN106695557A (zh) * | 2017-02-21 | 2017-05-24 | 佛山市新泓达机械有限公司 | 用于玻璃双边磨边机的入口宽度检测装置 |
CN113632019A (zh) * | 2019-03-26 | 2021-11-09 | 豪迈钻孔装置有限公司 | 用于运行机床的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1137515B9 (de) | 2007-01-24 |
KR100688818B1 (ko) | 2007-02-28 |
RU2238182C2 (ru) | 2004-10-20 |
CN100339184C (zh) | 2007-09-26 |
WO2000035631B1 (de) | 2000-08-17 |
JP4824166B2 (ja) | 2011-11-30 |
EP1137515B1 (de) | 2006-03-22 |
CA2352754C (en) | 2008-02-05 |
CA2352754A1 (en) | 2000-06-22 |
DE19857364A1 (de) | 2000-06-29 |
KR20010093144A (ko) | 2001-10-27 |
CZ298917B6 (cs) | 2008-03-12 |
ES2262357T3 (es) | 2006-11-16 |
CZ20012054A3 (cs) | 2002-06-12 |
EP1137515A1 (de) | 2001-10-04 |
US6623332B1 (en) | 2003-09-23 |
CN1330582A (zh) | 2002-01-09 |
BR9916052A (pt) | 2001-09-04 |
AU2281800A (en) | 2000-07-03 |
DE59913265D1 (de) | 2006-05-11 |
JP2003516865A (ja) | 2003-05-20 |
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