EP0402754A2 - Vibration frequency setting mechanism of an engraving device provided with air pen - Google Patents

Vibration frequency setting mechanism of an engraving device provided with air pen Download PDF

Info

Publication number
EP0402754A2
EP0402754A2 EP90110707A EP90110707A EP0402754A2 EP 0402754 A2 EP0402754 A2 EP 0402754A2 EP 90110707 A EP90110707 A EP 90110707A EP 90110707 A EP90110707 A EP 90110707A EP 0402754 A2 EP0402754 A2 EP 0402754A2
Authority
EP
European Patent Office
Prior art keywords
vibration frequency
output
air
air pen
comparator
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.)
Withdrawn
Application number
EP90110707A
Other languages
German (de)
French (fr)
Other versions
EP0402754A3 (en
Inventor
Kiichi Hiyama
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.)
Ando Electric Co Ltd
Original Assignee
Ando Electric Co Ltd
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 Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Publication of EP0402754A2 publication Critical patent/EP0402754A2/en
Publication of EP0402754A3 publication Critical patent/EP0402754A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/005—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings characterised by the power drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings

Definitions

  • the present invention relates to an engraving device provided with an air pen having a vibration frequency which can be set to a prescribed value by a vibration frequency setting means.
  • the prior art engraving device comprises a holder 12 for holding an air pen 11, an air cylinder provided with a pressure rod and connected to the holder 12 and interlocked with the air pen 11 for moving the air pen 11 so that the air pen 11 can engrave the surface of the work, a pressure regulator 13 connected to an air reservoir 14 and supplying the air pressure to the air cylinder so that the air cylinder can supply the air pressure via the pressure rod to the holder 12 at the state where the air pen 11 is brought into contact with the surface of the work and the air pressure applied via the pressure rod is regulated to be constant by the pressure regulator 13 when the air pen 11 is moved in response to the surface of the work.
  • the air pen can be vibrated by merely regulating the pressure with use of the pressure regulator 13 according to the prior art engraving device, it was necessary to always pay attention to the variation of the quality of the air pen.
  • the variation of quality defines as follows.
  • the vibration frequency setting mechanism of an engraving device provided with air pen comprises an engraving device comprising an air pen and a holder for holding the air pen, vibration frequency of the air pen being varied in response to a compressed air to be supplied to the holder, a vibration frequency detector attached to the holder for detecting the vibration frequency of the air pen and providing a pulse signal corresponding to the vibration frequency, a counter for counting the pulse signal, a pressure regulator provided with a regulating terminal for increasing or decreasing the pressure of the compressed air in response to a signal supplied thereto from an output circuit, a vibration frequency setting circuit for setting the vibration frequency of the air pen, a comparator for receiving the output of the counter and the vibration frequency and providing a logical "1" if the output of the counter is greater than the vibration frequency and a logical "0" if the output of the counter is less than the vibration frequency, an output circuit for receiving the output of the comparator and decrementing the analog output at a given step if the output of the comparator is a logical
  • a vibration frequency setting mechanism of an engraving device provided with air pen according to a preferred embodiment of the present invention will be described with reference to Figs. 1 and 2.
  • the vibration frequency setting mechanism of an engraving device provided with air pen comprises an engraving device comprising an air pen 11 and a holder 12 for holding the air pen 11, vibration frequency of the air pen 11 being varied in response to a compressed air to be supplied to the holder 12, a vibration frequency detector 3 attached to the holder 12 for detecting the vibration frequency of the air pen 11 and providing a pulse signal 21 corresponding to the vibration frequency, a counter 4 for counting the pulse signal 21, a pressure regulator 1 provided with a regulating terminal 2 for increasing or decreasing the pressure of the compressed air in response to a signal supplied thereto from an output circuit 7 (described later), a vibration frequency setting circuit 5 for setting the vibration frequency 22 of the air pen 11, a comparator 6 for receiving the output of the counter 4 and the vibration frequency 22 and providing a logical "1" if the output of the counter 4 is greater than the vibration frequency 22 and a logical "0” if the output of the counter 4 is less than the vibration frequency 22, an output circuit 7 for receiving the output of the comparator 6 and decrementing the analog output at
  • the pressure regulator 1 increases or decreases the pressure of the pressurized air in response to amount of signal to be applied to the air regulating terminal 2.
  • the vibration detector 3 detects the vibration frequency of the air pen 11 and provides the pulse signal 21 corresponding to the vibration frequency.
  • a piezoelectric sensor is employed as the vibration detector 3.
  • the counter 4 detects the puslse signal 21 provided by the vibration frequency detector 3.
  • the vibration frequency setting circuit 5 sets the vibration frequency 22 of the air pen 11 and employs for example a digital switch.
  • the comparator 6 receives the output of the counter 4 and the vibration frequency 22 and provides a logical "1" if the output of the counter 4 is greater than the vibration frequency 22 and a logical "0" if the output of the counter 4 is less than the vibration frequency 22.
  • the output circuit 7 receives the output of the comparator 6 and decrements the analog output at a given step if the output of the comparator 6 is a logical "1” and increments the analog output at a given step if the output of the comparator 6 is a logical "0".
  • the output circuit 7 may comprise, as illustrated in Fig. 2, a CPU 71 and a D/A converter.
  • the CPU 71 provides a digital data which is incremented or decremented at a give step in response to the logical state of the output of the copmarator 6.
  • the digital data provided by the CPU 71 is converted to an analog signal by the D/A converter 72.
  • the pressure regulator 1 can receive the analog output signal from the D/A converter 72 via the grating terminal 2 which is incremented or decremented in the given step in response to the logical state of the output of the comparator 6.
  • the air pen 11 receives the given vibration frequency which is same as the vibration frequency set by the vibration frequency setting circuit 5 from the pressure regulator 1.
  • the vibration frequency of the air pen can be kept conformed to the vibration frequency set by the vibration frequency setting circuit 5. Hence, there are following advantages.

Abstract

There is disclosed a vibration frequency setting mechanism of an engraving device provided with air pen. The vibration frequency setting mechanism comprises an engraving device provided with an air pen (11) vibration frequency of which is varied in response to compressed air to be supplied to the holder (12), a vibration frequency detector (12) for detecting the vibration frequency of the air pen (11) and providing a pulse signal (21) corresponding to the vibration frequency, a counter (4) for counting the pulse signal (21), a pressure regulator (1) provided with a regulating terminal (2), a vibration frequency setting circuit (5) for setting the vibration frequency (22) of the air pen(11), a comparator (6) for receiving the output of the counter (4) and the vibration frequency (22) and providing a logical "1" if the output of the counter (4) is greater than the vibration frequency (22) and a logical "0" if the output of the counter (4) is less than the vibration frequency (22), an output circuit (7) for receiving the output of the comparator (6) and decrementing the analog output at a given step if the output of the comparator (6) is a logical "1" and incrementing the analog output at a given step if the output of the comparator (6) is a logical "0", whereby the analog output of the output circuit (7) is supplied to the regulating terminal (2) so that the compressed air is supplied to the holder (12).

Description

  • The present invention relates to an engraving device provided with an air pen having a vibration frequency which can be set to a prescribed value by a vibration frequency setting means.
  • An arrangement of the prior art engraving device provided with an air pen will be described with reference to Figs. 3 and 4. The engraving device provided with the air pen is also described in Japanese Patent Laid-Open Publication No. 63-69700 (U.S. Serial No. 07/411 557). The prior art engraving device comprises a holder 12 for holding an air pen 11, an air cylinder provided with a pressure rod and connected to the holder 12 and interlocked with the air pen 11 for moving the air pen 11 so that the air pen 11 can engrave the surface of the work, a pressure regulator 13 connected to an air reservoir 14 and supplying the air pressure to the air cylinder so that the air cylinder can supply the air pressure via the pressure rod to the holder 12 at the state where the air pen 11 is brought into contact with the surface of the work and the air pressure applied via the pressure rod is regulated to be constant by the pressure regulator 13 when the air pen 11 is moved in response to the surface of the work.
  • Inasmuch as the air pen can be vibrated by merely regulating the pressure with use of the pressure regulator 13 according to the prior art engraving device, it was necessary to always pay attention to the variation of the quality of the air pen. The variation of quality defines as follows.
    • (a) Relationship between air pressure and vibration frequency of the air pen is varied for each air pen. For example, even if the air pen is operated under the same air pressure the vibration frequency of an air pen 11A is greater than that of an air pen 11b as illustrated in Fig. 4.
    • (b) Relationship between air pressure and vibration frequency is varied due to secular change of each air pen.
  • On the basis of the causes of the variation of quality as set forth in the above (a), (b), it was necessary to regulate air pressure at the optimum value every time the air pen is exchanged for another air pen.
  • It is an object of the present invention to provide a vibration frequency setting mechanism of an engraving device provided with air pen capable of eliminating both the exchange of the air pen and the regulation of variation of relationship between air pressure and vibration frequency due to secular change by setting vibration frequency of the air pen to an optimum value.
  • To achieve the above object of the present invention, the vibration frequency setting mechanism of an engraving device provided with air pen comprises an engraving device comprising an air pen and a holder for holding the air pen, vibration frequency of the air pen being varied in response to a compressed air to be supplied to the holder, a vibration frequency detector attached to the holder for detecting the vibration frequency of the air pen and providing a pulse signal corresponding to the vibration frequency, a counter for counting the pulse signal, a pressure regulator provided with a regulating terminal for increasing or decreasing the pressure of the compressed air in response to a signal supplied thereto from an output circuit, a vibration frequency setting circuit for setting the vibration frequency of the air pen, a comparator for receiving the output of the counter and the vibration frequency and providing a logical "1" if the output of the counter is greater than the vibration frequency and a logical "0" if the output of the counter is less than the vibration frequency, an output circuit for receiving the output of the comparator and decrementing the analog output at a given step if the output of the comparator is a logical "1" and incrementing the analog output at a given step if the output of the comparator is a logical "0", whereby the analog output of the output circuit is supplied to the regulating terminal of the pressure regulator so that the compressed air is supplied from the pressure regulator to the holder.
  • The above and other objects, features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.
    • Fig. 1 is a view showing an arrangement of a vibration frequency setting mechanism of an engraving device provided with air pen according to a preferred embodiment of the present invention;
    • Fig. 2 is a view showing an arrangement of an output circuit, a constituent of arrangement of Fig. 1;
    • Fig. 3 is a view showing an arrangement of a prior art engaving device provided with air pen; and
    • Fig. 4 is a graph showing a relationship between vibration frequency and air pressure.
  • A vibration frequency setting mechanism of an engraving device provided with air pen according to a preferred embodiment of the present invention will be described with reference to Figs. 1 and 2.
  • The vibration frequency setting mechanism of an engraving device provided with air pen comprises an engraving device comprising an air pen 11 and a holder 12 for holding the air pen 11, vibration frequency of the air pen 11 being varied in response to a compressed air to be supplied to the holder 12, a vibration frequency detector 3 attached to the holder 12 for detecting the vibration frequency of the air pen 11 and providing a pulse signal 21 corresponding to the vibration frequency, a counter 4 for counting the pulse signal 21, a pressure regulator 1 provided with a regulating terminal 2 for increasing or decreasing the pressure of the compressed air in response to a signal supplied thereto from an output circuit 7 (described later), a vibration frequency setting circuit 5 for setting the vibration frequency 22 of the air pen 11, a comparator 6 for receiving the output of the counter 4 and the vibration frequency 22 and providing a logical "1" if the output of the counter 4 is greater than the vibration frequency 22 and a logical "0" if the output of the counter 4 is less than the vibration frequency 22, an output circuit 7 for receiving the output of the comparator 6 and decrementing the analog output at a given step if the output of the comparator 6 is a logical "1" and incrementing the analog output at a given step if the output of the comparator 6 is a logical "0", whereby the analog output of the output circuit 7 is supplied to the regulating terminal 2 of the pressure regulator 1 so that the compressed air is supplied from the pressure regulator 1 to the holder 12.
  • The arrangement of the vibration frequency setting mechanism of an engraving device provided with air pen will be described more in detail.
  • The pressure regulator 1 increases or decreases the pressure of the pressurized air in response to amount of signal to be applied to the air regulating terminal 2. The vibration detector 3 detects the vibration frequency of the air pen 11 and provides the pulse signal 21 corresponding to the vibration frequency. A piezoelectric sensor is employed as the vibration detector 3.
  • The counter 4 detects the puslse signal 21 provided by the vibration frequency detector 3. The vibration frequency setting circuit 5 sets the vibration frequency 22 of the air pen 11 and employs for example a digital switch.
  • The comparator 6 receives the output of the counter 4 and the vibration frequency 22 and provides a logical "1" if the output of the counter 4 is greater than the vibration frequency 22 and a logical "0" if the output of the counter 4 is less than the vibration frequency 22. The output circuit 7 receives the output of the comparator 6 and decrements the analog output at a given step if the output of the comparator 6 is a logical "1" and increments the analog output at a given step if the output of the comparator 6 is a logical "0". The output circuit 7 may comprise, as illustrated in Fig. 2, a CPU 71 and a D/A converter. The CPU 71 provides a digital data which is incremented or decremented at a give step in response to the logical state of the output of the copmarator 6. The digital data provided by the CPU 71 is converted to an analog signal by the D/A converter 72. Accordingly, the pressure regulator 1 can receive the analog output signal from the D/A converter 72 via the reglating terminal 2 which is incremented or decremented in the given step in response to the logical state of the output of the comparator 6. As a result, the air pen 11 receives the given vibration frequency which is same as the vibration frequency set by the vibration frequency setting circuit 5 from the pressure regulator 1.
  • According to the present invention, the vibration frequency of the air pen can be kept conformed to the vibration frequency set by the vibration frequency setting circuit 5. Hence, there are following advantages.
    • (a) Adjustment of the air pen due to the manufacturing variation is eliminated.
    • (b) Adjustment of the air pen due to secular change is eliminated.
    • (c) It is possible to diagnose the operation of the engraving device by monitoring the counted value of the vibration fregency of the air pen during the fixed time.
  • Although the invention has been described in its preferred form with a certain degree of paticularity, it is to be understood that many variations and changes are possible in the invention without departing from the scope thereof.
    The features disclosed in the foregoing description, in the claims and/or in the accompanying drawings may, both separately and in any combination thereof, be material for realising the invention in diverse forms thereof.

Claims (2)

1. A vibration frequency setting mechanism of an engraving device provided with air pen comprising:
an engraving device comprising an air pen (11) and a holder (12) for holding the air pen (11), vibration frequency of the air pen (11) being varied in response to the compressed air to be supplied to the holder (12);
a vibration frequency detector (3) attached to the holder (12) for detecting the vibration frequency of the air pen (11) and providing a pulse signal (21) corresponding to the vibration frequency;
a counter (4) for counting the pulse signal (21);
a pressure regulator (1) provided with a regulating terminal (2) for increasing or decreasing the pressure of the compressed air in response to a signal supplied thereto from an output circuit (7) (described later);
a vibration frequency setting circuit (5) for setting the vibration frequency (22) of the air pen (11);
a comparator (6) for receiving the output of the counter (4) and the vibration frequency (22) and providing a logical "1" if the output of the counter (4) is greater than the vibration frequency (22) and a logical "0" if the output of the counter (4) is less than the vibration frequency (22);
an output circuit (7) for receiving the output of the comparator (6) and decrementing the analog output at a given step if the output of the comparator (6) is a logical "1" and incrementing the analog output at a given step if the output of the comparator (6) is a logical "0";
whereby the analog output of the output circuit (7) is supplied to the regulating terminal (2) of the pressure regulator (1) so that the compressed air is supplied from the pressure regulator (1) to the holder (12).
2. A vibration frequency setting mechanism of an engraving device provided with air pen according to claim 1, wherein the output circuit (7) comprises a CPU (71) and a D/A converter (72),
the CPU (71) producing digital data which is incremented or decremented at a given step in response to a logical state provided by the comparator (6) and the D/A converter (72) converting the digital data provided by the CPU (71) into an analog signal.
EP19900110707 1989-06-16 1990-06-06 Vibration frequency setting mechanism of an engraving device provided with air pen Withdrawn EP0402754A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP154075/89 1989-06-16
JP1154075A JPH0780396B2 (en) 1989-06-16 1989-06-16 Frequency setting mechanism of engraver using air pen

Publications (2)

Publication Number Publication Date
EP0402754A2 true EP0402754A2 (en) 1990-12-19
EP0402754A3 EP0402754A3 (en) 1991-07-10

Family

ID=15576344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110707 Withdrawn EP0402754A3 (en) 1989-06-16 1990-06-06 Vibration frequency setting mechanism of an engraving device provided with air pen

Country Status (4)

Country Link
EP (1) EP0402754A3 (en)
JP (1) JPH0780396B2 (en)
KR (1) KR950012966B1 (en)
CA (1) CA2018906A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1106387A2 (en) * 1999-11-30 2001-06-13 Ando Electric Co., Ltd. Marking apparatus with oscillation control system
DE10210630B4 (en) * 2001-03-23 2005-07-07 Seh Technik Gmbh Puncturing stamping head
DE102006022166A1 (en) * 2006-05-12 2007-11-15 Nc-Automation Gmbh Cut marking tool for numerically controlled machines and robots, has cutting pin, displacably mounted in housing which is in connection with two energy accumulators
DE102017128475A1 (en) * 2017-11-30 2019-06-06 Rattunde Ag Method for operating a marking head with pressure sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103963533A (en) * 2014-05-16 2014-08-06 苏州意玛斯砂光设备有限公司 Arc positioning assembly of carving machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2062124A (en) * 1979-10-22 1981-05-20 Secretary Industry Brit Fluid driven oscillator and hammer device
JPS6091422A (en) * 1983-10-24 1985-05-22 Mitsubishi Electric Corp Vibration controller
JPS60141425A (en) * 1983-12-27 1985-07-26 Amada Co Ltd Method of controlling cutting operation of broaching machine
DE3534920A1 (en) * 1985-09-30 1987-05-21 Rodenstock Optik G Device for engraving workpieces, in particular spectacle lenses
JPS6369700A (en) * 1986-09-11 1988-03-29 安藤電気株式会社 Carving apparatus with pressing-force adjusting mechanism
DE3637128A1 (en) * 1986-10-31 1988-05-05 Hilti Ag DEVICE FOR AUTOMATIC TOOL-SPECIFIC OPERATING DATA SETTING OF AN ELECTRICAL DRIVE DEVICE FOR INTERCHANGEABLE TOOLS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2062124A (en) * 1979-10-22 1981-05-20 Secretary Industry Brit Fluid driven oscillator and hammer device
JPS6091422A (en) * 1983-10-24 1985-05-22 Mitsubishi Electric Corp Vibration controller
JPS60141425A (en) * 1983-12-27 1985-07-26 Amada Co Ltd Method of controlling cutting operation of broaching machine
DE3534920A1 (en) * 1985-09-30 1987-05-21 Rodenstock Optik G Device for engraving workpieces, in particular spectacle lenses
JPS6369700A (en) * 1986-09-11 1988-03-29 安藤電気株式会社 Carving apparatus with pressing-force adjusting mechanism
DE3637128A1 (en) * 1986-10-31 1988-05-05 Hilti Ag DEVICE FOR AUTOMATIC TOOL-SPECIFIC OPERATING DATA SETTING OF AN ELECTRICAL DRIVE DEVICE FOR INTERCHANGEABLE TOOLS

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 239 (P-391)[1962], 25th September 1985; & JP-A-60 91 422 (MITSUBISHI DENKI K.K.) 22-05-1985 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 303 (M-434)[2026], 30th November 1985; & JP-A-60 141 425 (AMADA K.K.) 26-07-1985 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1106387A2 (en) * 1999-11-30 2001-06-13 Ando Electric Co., Ltd. Marking apparatus with oscillation control system
EP1106387A3 (en) * 1999-11-30 2004-03-03 Ando Electric Co., Ltd. Marking apparatus with oscillation control system
DE10210630B4 (en) * 2001-03-23 2005-07-07 Seh Technik Gmbh Puncturing stamping head
DE102006022166A1 (en) * 2006-05-12 2007-11-15 Nc-Automation Gmbh Cut marking tool for numerically controlled machines and robots, has cutting pin, displacably mounted in housing which is in connection with two energy accumulators
DE102006022166B4 (en) * 2006-05-12 2008-08-07 Nc-Automation Gmbh Scratch marking tool for NC machines and robots
DE102017128475A1 (en) * 2017-11-30 2019-06-06 Rattunde Ag Method for operating a marking head with pressure sensor
DE102017128475B4 (en) * 2017-11-30 2019-07-04 Rattunde Ag Method for operating a marking head with pressure sensor

Also Published As

Publication number Publication date
JPH0780396B2 (en) 1995-08-30
KR950012966B1 (en) 1995-10-24
KR910000393A (en) 1991-01-29
CA2018906A1 (en) 1990-12-16
JPH0319900A (en) 1991-01-29
EP0402754A3 (en) 1991-07-10

Similar Documents

Publication Publication Date Title
US4371816A (en) Control circuit for an ultrasonic dental scaler
EP0402754A2 (en) Vibration frequency setting mechanism of an engraving device provided with air pen
US5421534A (en) Apparatus for and method of controlling tension of a filamentary material
EP0457979A1 (en) Scanning micromechanical probe control system
US4832329A (en) Device for controlling a pile lifting device and method of operation
US5174695A (en) Fineboring machine and process for producing bores with any polar and/or axial generating line
EP0873855A3 (en) Method and apparatus for manufacturing moulded articles in hard metal, ceramic, sintered metal or similar
US4461125A (en) Control circuit for an apparatus for adjusting and dressing a grinding wheel
EP0150216B1 (en) Method of controlling positional loop gain
GB2045474A (en) Pressure control in a printing machine
DE3736903A1 (en) ARRANGEMENT FOR THE TRANSFER OF DATA
US5915293A (en) Method for compensating for variation in shut height during starting and stopping of a press
US7024273B2 (en) Probe driving mechanism for displacement measuring apparatuses
JPS61152462A (en) Automatic gap adjusting mechanism
GB1587026A (en) Device for adjustment of the ink metering elements in the inking unit on printing presses
EP1106387A2 (en) Marking apparatus with oscillation control system
JP4219550B2 (en) Polishing method and polishing apparatus
JPH0327397B2 (en)
CN218842566U (en) Knob and sewing machine
JP2550649Y2 (en) Trigger signal generation circuit
SU1687351A1 (en) Adaptive system of program control of inertia vibropress- hammer
SU791503A1 (en) Machine tool control system
SU967847A1 (en) Apparatus for automatic control of injection-mould filling depth
SU791498A1 (en) Apparatus for control monitoring of cross-section shape errors
SU1451597A1 (en) Apparatus for monitoring linear density of fibrous materials

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

Kind code of ref document: A2

Designated state(s): DE GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19910918

17Q First examination report despatched

Effective date: 19930416

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930827