EP0023547B1 - Schleifmaschine zum Abschleifen des Grates von Rohlingen - Google Patents

Schleifmaschine zum Abschleifen des Grates von Rohlingen Download PDF

Info

Publication number
EP0023547B1
EP0023547B1 EP80103260A EP80103260A EP0023547B1 EP 0023547 B1 EP0023547 B1 EP 0023547B1 EP 80103260 A EP80103260 A EP 80103260A EP 80103260 A EP80103260 A EP 80103260A EP 0023547 B1 EP0023547 B1 EP 0023547B1
Authority
EP
European Patent Office
Prior art keywords
grinding
feed
burr
workpiece
grinding wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80103260A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0023547A1 (de
Inventor
Wolfgang Ing. Grad. Feldt
Walter Dipl.-Ing. Bautz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eduard Bautz GmbH
Manroland AG
Original Assignee
Eduard Bautz GmbH
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eduard Bautz GmbH, MAN Roland Druckmaschinen AG filed Critical Eduard Bautz GmbH
Priority to AT80103260T priority Critical patent/ATE4298T1/de
Publication of EP0023547A1 publication Critical patent/EP0023547A1/de
Application granted granted Critical
Publication of EP0023547B1 publication Critical patent/EP0023547B1/de
Expired legal-status Critical Current

Links

Images

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • 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
    • B24B49/16—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 taking regard of the load

Definitions

  • the invention relates to a grinding machine for grinding the burr of blanks with a first feed device for a feed V i between the blank and grinding wheel perpendicular to the burr extension and a second feed device for a feed V 2 in the direction of the burr extension and a device for determining the contour of the workpiece with burrs.
  • a grinding machine of this type is known from DE-A1-2824266.
  • the radial force (normal force) applied to the grinding wheel is measured to determine the contour of the workpiece with burrs. The process is therefore disrupted by imbalance forces.
  • the increase in force in the radial direction is detected at a point on the blank when the grinding wheel fully touches the outer surface of the workpiece after the burr has been ground off. If the burr is uneven, this setting is only correct for localized areas.
  • the increase in force is also only used to keep the preselected contact force constant. In this respect, there is no measurement of the forces occurring on the tool and no recognition of the target contour.
  • a disadvantage of such a controlled grinding machine is that there is no possibility of recognizing the actual contour of the workpiece. As a result, it is also not possible to completely remove the burr on the one hand without grinding into the workpiece itself on the other hand. If at all, this regulation can only be successful with constant burr thicknesses after the approximately necessary force for the respective grinding of the burr has been set beforehand.
  • the z. B. cast during casting must always be ground so far that it meets the aesthetic requirements on the one hand and on the other hand has the smallest possible allowance for the subsequent manufacturing operations.
  • the invention is therefore based on the object of providing a grinding machine for processing a cast burr down to the contour of the respective workpiece, in which vibrations which are produced by radial forces caused by unbalance cannot interfere with the measuring process.
  • the invention is based on the fact that the peripheral force occurring on the grinding wheel is approximately proportional to the length of engagement of the wheel and the feed speed, or the length of engagement of the wheel is proportional to the differential quotient of the peripheral force according to the feed speed.
  • the change in the grinding wheel circumferential force dPu, or the torque ⁇ M, or the required power ⁇ N, which occurs at a constant predetermined feed speed V 1 and at a predetermined sampling time dt, is detected by appropriate devices and is detected by appropriate Circuits the differential quotients , ⁇ M . ⁇ N derived.
  • the speed of the feed V i is kept constant, it is only necessary in each case to determine the circumferential force or the torque or the applied power or the respective change in these values in a period of time. This considerably simplifies the measurement and control effort.
  • the use of the change in the measured values recorded is particularly advantageous for the following reasons.
  • the absolute value of the torque will change to a certain extent, ie it will generally increase gradually. However, this depends on the size and geometry of the burr to be processed.
  • the grinding wheel enters the workpiece contour, however, a very large change in the torque to be applied occurs; with the grinding wheel penetrating further into the workpiece, the change or the increase in the torque remains constant regardless of the geometry of the cast burr.
  • the kink in the characteristic curve that occurs when entering the workpiece is a clear differentiator between the cast burr section and the finished workpiece contour. This kink occurs early on with cast burrs of smaller size - in the borderline case where there is no burr there is the significant increase in the measured circumferential force or the torque at the moment of contact between the wheel and the workpiece - it is therefore not necessary to penetrate the grinding wheel as far leave until the measured circumferential force or the measured torque reaches a certain threshold in absolute terms.
  • the speed of the feed V 2 in the direction of the burr extension corresponding to the workpiece contour at the location of the grinding wheel intervention can be regulated with the aid of a computer-controlled control device such that this feed V 2 together with the integral of the oscillating individual feeds V formed over a certain period of time i provides an optimal tangential speed.
  • V 1 max. V 1 max.
  • the bench grinder carriage can accommodate one or more driven grinding wheels in order to be able to adapt the type of grinding wheel to the shape and size of the burr and the contour of the workpiece.
  • a particularly sensitive regulation of the grinding work is possible if one of the grinding wheels can be uncoupled from the drive and thus the inertial mass that burdens the control process can be reduced even further.
  • the first feed V i on the bench grinder slide, all other feed and adjustment devices are assigned to the workpiece clamping unit.
  • the feed and adjustment movement of the workpiece can be programmed depending on the workpiece. This makes it possible to dimension the mounting and clamping of the workpieces with sufficient robustness.
  • the bench grinder on the other hand, can be easily built, so that the grinding wheel can work sensitively by switching off inert masses that adversely affect the control.
  • a reliable arrangement is achieved in that the feed movements of the workpiece are designed as rotary and or swiveling movements.
  • the tracks that are sensitive to dirt and are necessary for straight guides are thus avoided.
  • the grinding wheel 1 is arranged on a grinding block carriage 2 and is driven by the motor M S.
  • the feed V 1 in the x direction is carried out by the motor M x .
  • the transmission takes place through a toothed belt drive 3, by means of which an axially immovable nut 4 is rotated and the spindle 5 fastened to the grinding block carriage 2 is axially displaced.
  • the grinding block carriage 2 is mounted in bearing blocks 7, 8 fastened to the grinding machine stand 6.
  • the peripheral force Pu to be applied to the grinding wheel 1, or the torque M, or the power N is measured by measuring devices 9.
  • the electrical voltage absorbed by the electric motor M s and the electrical current are measured.
  • the speed of the feed V 1 in the x direction is determined on the basis of a tachometer generator 10 provided on the motor M x and is brought to a constant size in conjunction with a controller 10a.
  • the connection shown in broken lines indicates that the measured values of V i can alternatively be supplied to the circuit 11.
  • the measured values for the Quotients used regulation etc. formed and placed in a comparator circuit 12, in which these are compared in a known manner with a predetermined threshold value 13.
  • the motor M x is switched off or over, so that the feed Vi is interrupted in the x direction.
  • the description of the 2-point control process is explained in more detail below with reference to FIG. 4.
  • the workpiece 14 with the cast burr 15 to be ground is clamped between a mandrel 16 and a hydraulic clamping element 17 and rotated by a motor M w via a belt transmission 18.
  • the feed V 2 is therefore in the w direction.
  • the workpiece 14 is held in a frame 19 which can be pivoted about a bolt 20 in the z direction. This pivoting is carried out by a further motor M z via a toothed belt drive 21 and a spindle 22.
  • the frame 19 can also be rotated in the y direction by a motor My. This is flanged to a rotary body 23 which is mounted in roller bearings 24.
  • the gear output shaft 25 is firmly connected to the housing of the workpiece clamping unit 26.
  • the bolt 20 is arranged on a holder 27 which is fixedly connected to the rotary body 23.
  • the possibility of uncoupling the grinding wheel 1 from the drive 1 by the motor M s is shown schematically.
  • the shafts 1b and the sleeve 1c - to which the drive is fed - can be separated from one another by actuating a disk clutch 1d and only the smaller grinding wheel 1e is driven.
  • FIGS. 3a to 3d The relationship of the grinding wheel movement with the respectively detectable measured values is shown in FIGS. 3a to 3d.
  • the rapid traverse egg switches off and the constant feed speed V 1 is switched on.
  • the grinding wheel circumferential force reaches a Pu max.
  • the change in the circumferential force is determined with the penetration depth ⁇ x - ie at constant feed speed V 1 in the time interval ⁇ t - which is why even before Pu max. the grinding wheel 1 can be stopped.
  • the magnitude of the change is plotted in FIG. 3d to clarify the facts.
  • the circumferential force Pu is determined indirectly via a very sensitive registration measurement of the power N s consumed by the main motor M s .
  • the power is proportional to the difference angle ⁇ between the target phase and the lagging actual phase of the rotor axis on the AC main motor M S.
  • the difference angle ⁇ is determined from the vector product of the input AC voltage U Ms of the frequency converter upstream of the motor M s with the motor input AC current I Ms.
  • the subsequent differential quotient formation or is either via an electrical RC differentiator or the difference between the power values at the beginning and end of a sampling time reached.
  • Subordinate to the contour control loop is the speed control loop of the sliding carriage feed drive, which on the one hand consists of a very low-inertia DC permanent magnet cage armature motor with attached tachometer generator, and on the other hand consists of an upstream four-quadrant transistor controller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP80103260A 1979-07-26 1980-06-12 Schleifmaschine zum Abschleifen des Grates von Rohlingen Expired EP0023547B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103260T ATE4298T1 (de) 1979-07-26 1980-06-12 Schleifmaschine zum abschleifen des grates von rohlingen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2930309 1979-07-26
DE2930309A DE2930309C2 (de) 1979-07-26 1979-07-26 Verfahren zum Erkennen der Sollkontur eines gratbehafteten Werkstücks während des Abarbeitens des Grates

Publications (2)

Publication Number Publication Date
EP0023547A1 EP0023547A1 (de) 1981-02-11
EP0023547B1 true EP0023547B1 (de) 1983-07-27

Family

ID=6076823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103260A Expired EP0023547B1 (de) 1979-07-26 1980-06-12 Schleifmaschine zum Abschleifen des Grates von Rohlingen

Country Status (6)

Country Link
US (1) US4428162A (ja)
EP (1) EP0023547B1 (ja)
JP (1) JPS5689465A (ja)
AT (1) ATE4298T1 (ja)
BR (1) BR8004676A (ja)
DE (1) DE2930309C2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104942672A (zh) * 2014-05-29 2015-09-30 天津市远大阀门有限公司 砂轮机

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834746A (ja) * 1981-08-20 1983-03-01 Toshiba Mach Co Ltd ロ−ル研削盤の制御装置
DE3305423A1 (de) * 1982-02-18 1983-09-01 Dr. Horst Nahr GmbH, 8530 Neustadt Erkennung von graten an gussstuecken beim schleifen
JPS63245363A (ja) * 1987-03-31 1988-10-12 Nippei Toyama Corp 倣い研削装置
US5119600A (en) * 1988-04-08 1992-06-09 Kawasaki Steel Corporation Deburring apparatus
DE3823564A1 (de) * 1988-07-12 1990-01-18 Bernd Eisenbach Ausseneck-verputzvorrichtung fuer fensterrahmen od. dgl.
JPH02164077A (ja) * 1988-12-19 1990-06-25 Hitachi Ltd アモルファスシリコン太陽電池
GB2364261B (en) 1999-05-21 2002-05-15 Emerson Electric Uk Ltd Method of and apparatus for positioning a tool
JP4183672B2 (ja) * 2004-10-01 2008-11-19 株式会社ノリタケカンパニーリミテド ロータリ研削方法およびロータリ研削盤の制御装置
NL1033915C2 (nl) * 2007-05-31 2008-12-02 Heineken Supply Chain Bv Inrichting en werkwijze voor het afgeven van drank.
US7736101B2 (en) * 2008-08-31 2010-06-15 General Electric Company Guided rotary file
FR2943935B1 (fr) * 2009-04-03 2011-06-10 Mbh Dev Machine electroportative avec dispositif de motorisation "sans balais" destinee a des applications de poncage, surfacage, meulage, forage, notamment.
DE102012010004A1 (de) * 2012-05-22 2013-11-28 Satisloh Ag Verfahren zum Schleifen von Werkstücken, insbesondere zum zentrierenden Schleifen von Werkstücken wie optischen Linsen
JP6084132B2 (ja) * 2013-07-31 2017-02-22 株式会社安川電機 研磨システムおよびスポット溶接システム
CN103691917B (zh) * 2013-12-30 2015-07-08 凯斯曼秦皇岛汽车零部件制造有限公司 铝铸件去飞边装置
JP6444969B2 (ja) * 2016-12-21 2018-12-26 ファナック株式会社 数値制御装置
CN109894595A (zh) * 2019-04-25 2019-06-18 含山县大兴金属制品有限公司 一种铝压铸件的去毛刺设备
DE102020128811A1 (de) * 2020-11-02 2022-05-05 Pro-Micron Gmbh Verfahren zur Steuerung und/oder Überwachung eines Werkstückbearbeitungsprozesses
CN112231828A (zh) * 2020-11-10 2021-01-15 哈尔滨工业大学 一种控制翼面附着流动的前缘组合凸起结构及其流动控制方法
CN114228013B (zh) * 2021-12-24 2024-03-12 济南高仕机械制造有限公司 一种带孔件毛刺批量去除装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707855A (en) 1953-04-17 1955-05-10 Joseph J Miller Multiple utility grinder
CH337087A (de) 1953-11-27 1959-03-15 Spandau Maschf Geco Pumpentech Einrichtung zum automatischen Steuern der Werkzeugzustellung an Schleifmaschinen, insbesondere Innenschleifmaschinen
US2961808A (en) * 1958-03-10 1960-11-29 Machinery Electrification Inc Machine tool with load control
DE1602973B2 (de) * 1967-11-28 1975-03-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Selbsttätige Steuerungsvorrichtu ng für Werkzeugmaschinen
US3589077A (en) 1968-06-05 1971-06-29 Cincinnati Milacron Inc Control for cutting tool
DE1803742B2 (de) * 1968-10-18 1972-11-30 Siemens AG. 1000 Berlin u. 8000 München Vorrichtung zur optimalen anpassung einer numerisch gesteuerten werkzeugmaschine an den bearbeitungsvorgang eines werkstueckes
CA919293A (en) * 1969-04-28 1973-01-16 Micromatic Hone Corporation Adaptive feed control structure and method
DE1948011A1 (de) * 1969-09-23 1971-03-25 Siemens Ag Verfahren zur adaptiven Regelung von Werkzeugmaschinen,insbesondere Drehmaschinen
ZA714811B (en) * 1970-07-30 1972-04-26 Norton Co Automatic grinder
JPS5316949B2 (ja) * 1973-09-17 1978-06-05
JPS5222471B2 (ja) 1973-10-05 1977-06-17
DE2517001A1 (de) 1975-04-17 1976-10-21 Buderus Eisenwerk Verfahren und vorrichtung zur regelung des vorschubs einer schleifscheibe
CH620389A5 (ja) * 1977-07-11 1980-11-28 Fischer Ag Georg
DD141000A1 (de) * 1977-08-02 1980-04-09 Heinz Buchholz Adaptive steuerungsanordnung fuer die vorschubbewegung von werkzeug oder werkstueck beim schleifen
US4193227A (en) 1978-06-21 1980-03-18 Cincinnati Milacron-Heald Corporation Adaptive grinding control
US4228782A (en) 1978-09-08 1980-10-21 Rca Corporation System for regulating the applied blade-to-boule force during the slicing of wafers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104942672A (zh) * 2014-05-29 2015-09-30 天津市远大阀门有限公司 砂轮机

Also Published As

Publication number Publication date
EP0023547A1 (de) 1981-02-11
BR8004676A (pt) 1981-02-10
DE2930309A1 (de) 1981-03-12
JPS5689465A (en) 1981-07-20
JPS6350145B2 (ja) 1988-10-06
DE2930309C2 (de) 1982-10-14
US4428162A (en) 1984-01-31
ATE4298T1 (de) 1983-08-15

Similar Documents

Publication Publication Date Title
EP0023547B1 (de) Schleifmaschine zum Abschleifen des Grates von Rohlingen
DE102009007437B4 (de) Reitstock-Regelungsvorrichtung
DE102015104164B4 (de) Verfahren und Vorrichtung zur robotergestützten Oberflächenbearbeitung
DE3818159A1 (de) Verfahren und vorrichtung zur steuerung des betriebs von hon- oder schleifmaschinen
DE68918035T2 (de) Abgrat-maschine.
DE3911383A1 (de) Einrichtung zum erfassen und steuern der drehzahl einer pneumatisch angetriebenen spindel
DE2741773A1 (de) Vorrichtung fuer eine maschine zur erosiven funkenbearbeitung
CH625736A5 (ja)
EP0213218A1 (de) Verfahren zur Regelung der Spannkraft an umlaufenden Spanneinrichtungen von Werkzeugmaschinen
DE68908327T2 (de) Vorrichtung zum Gebrauch auf einer Schleif- oder Abrichtmaschine.
DE3884573T2 (de) Verfahren und Vorrichtung zum Gebrauch beim Schleifen.
EP0045380A2 (de) Steuerschaltung für eine Vorrichtung zum Nachstellen und Abrichten einer Schleifscheibe
DE2328582C2 (de) Vorrichtung zum Umschalten der Werkzeugvorschubgeschwindigkeit an einer spanenden Werkzeugmaschine, insbesondere einer Schleifmaschine, von Eilganggeschwindigkeit auf Arbeitsvorschubgeschwindigkeit
DE102017130202A1 (de) Punktschweisssystem mit kappenfräser zum schleifen von elektroden
EP2852472B1 (de) Verfahren zum schleifen von werkstücken, insbesondere zum zentrierenden schleifen von werkstücken wie optischen linsen
DE3013378A1 (de) Einrichtung zur adaptiven regelung von bearbeitungsprozessen insbesondere an rundschleifmaschinen
WO2019162218A1 (de) Positioniervorrichtung für eine werkzeugmaschine, werkzeugmaschine und verfahren zur positionierung
DE10104287A1 (de) Verfahren zur Bestimmung aktueller Positionsdaten eines Bearbeitungswerkzeuges und Vorrichtung hierzu
DE3506866C1 (de) Steuerungsvorrichtung für das automatische Entgraten von Werkstücken durch Fräsen
DE4208701C2 (de) Verfahren zum Einspannen eines Werkstücks in einer CNC-Drehmaschine
DE19957217A1 (de) Anordnung zum automatischen Wechsel von Werkzeugen an einer Antriebsspindel von Bearbeitungsmaschinen
DE4004378C2 (ja)
WO2021254903A1 (de) Werkzeugmaschine und verfahren zur spanenden bearbeitung von werkstücken
EP0305831A2 (de) Verfahren und Werkzeug-, insbesondere Schleifmaschine, zur Bearbeitung von Werkstücken
EP4061581B1 (de) Verfahren zum betreiben einer werkzeugmaschine und werkzeugmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH FR GB IT NL SE

17P Request for examination filed

Effective date: 19810202

ITF It: translation for a ep patent filed

Owner name: DOTT. FRANCO CICOGNA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 4298

Country of ref document: AT

Date of ref document: 19830815

Kind code of ref document: T

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920616

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930505

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930603

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930607

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19930625

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930630

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940612

Ref country code: AT

Effective date: 19940612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940630

Ref country code: CH

Effective date: 19940630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950101

EUG Se: european patent has lapsed

Ref document number: 80103260.8

Effective date: 19950110

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940612

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 80103260.8