GB1330355A - Automatically operating on a workpiece with a cutting or forming tool - Google Patents

Automatically operating on a workpiece with a cutting or forming tool

Info

Publication number
GB1330355A
GB1330355A GB4517670A GB4517670A GB1330355A GB 1330355 A GB1330355 A GB 1330355A GB 4517670 A GB4517670 A GB 4517670A GB 4517670 A GB4517670 A GB 4517670A GB 1330355 A GB1330355 A GB 1330355A
Authority
GB
United Kingdom
Prior art keywords
traverse
cutting
feed
tool
cutting performance
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
GB4517670A
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of GB1330355A publication Critical patent/GB1330355A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
    • G05B19/4163—Adaptive control of feed or cutting velocity
    • 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • 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
    • B23Q35/06—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 specially adapted for controlling successive operations, e.g. separate cuts, on a workpiece
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/10—Feeding members carrying tools or work
    • B23Q2705/18—Feeding other members supporting tools also feeding working spindles supports
    • B23Q2705/182—Feeding other members supporting tools also feeding working spindles supports in lathes
    • 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
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43152—Feed in, transfer line, rapid traverse to work, grip speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Numerical Control (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

1330355 Machine tool controls SIEMENS AG 22 Sept 1970 [23 Sept 1969] 45176/70 Addition to 1216000 as improved upon or modified by 1242760 Heading B3B [Also in Division G3] In a lathe the tool traverse and/or depth of cut is reduced for so long as the spindle torque which is dependent on the cutting performance exceeds an upper threshold, and in-feed up to a maximum of the programmed profile is carried out as long as the torque exceeds a lower threshold, and the input of the programme into the control is repeated until the actual contour of the workpiece corresponds with the programmed contour; the feed rate in one direction of workpiece or tool motion being dependent upon the cutting performance which is calculated from the spindle speed and torque, and at least one feed perpendicular to the above feed rate is dependent upon the first mentioned feed rate and/or upon the differential co-efficient of the calculated cutting performance. In an example, the tool moves up to the workpiece with a fast traverse V s in the Z direction, Fig. 1, and at time t, the tool contacts the work. A switch from fast traverse to cutting feed rate V zp takes place at time tz, when the minimum threshold P min in the cutting performance P z is exceeded. The tool penetrates further into the work until at time t 3 the normal cutting performance z max is exceeded. The traverse rate V z is slowed down and if this undershoots V min as at time t 4 , the in-feed V x in the X direction is initiated so as to reduce the depth of cut and P x max is not exceeded. The maximum traverse is limited by the programmed feed rate V zp . A block diagram, Fig. 3, shows a circuit for implementing the machining sequence of Fig. 1. The cutting rate is adapted to remain constant by regulating the spindle speed. A block circuit diagram, Fig. 4 (not shown), illustrates this arrangement. The in-feed may be controlled as a function of a signal which is proportional to the differential co-efficient of the cutting performance. A block diagram, Fig. 5 (not shown), illustrates this arrangement. Switching from fast traverse to cutting traverse takes place immediately, whilst switching from cutting traverse to fast retraction takes place with a delay so as to cater for irregularities in the stock.
GB4517670A 1969-09-23 1970-09-22 Automatically operating on a workpiece with a cutting or forming tool Expired GB1330355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691948011 DE1948011A1 (en) 1969-09-23 1969-09-23 Method for adaptive control of machine tools, in particular lathes

Publications (1)

Publication Number Publication Date
GB1330355A true GB1330355A (en) 1973-09-19

Family

ID=5746233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4517670A Expired GB1330355A (en) 1969-09-23 1970-09-22 Automatically operating on a workpiece with a cutting or forming tool

Country Status (4)

Country Link
CH (1) CH516975A (en)
DE (1) DE1948011A1 (en)
FR (1) FR2066916B2 (en)
GB (1) GB1330355A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235552A (en) * 1989-06-23 1991-03-06 Nitto Kohki Co Controller for boring apparatus.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930309C2 (en) * 1979-07-26 1982-10-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Method for recognizing the desired contour of a workpiece with burrs while the burr is being processed
DE2931940C2 (en) * 1979-08-07 1985-01-31 Horst Dipl.-Phys. Dr. 8530 Neustadt Nahr Device for setting the feed rate on cutting machine tools
DE3501579A1 (en) * 1985-01-18 1986-07-24 Emag Maschinenfabrik Gmbh, 7335 Salach Method and apparatus for monitoring the cutting force of a machine tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235552A (en) * 1989-06-23 1991-03-06 Nitto Kohki Co Controller for boring apparatus.
GB2235552B (en) * 1989-06-23 1993-06-16 Nitto Kohki Co Controller for boring apparatus

Also Published As

Publication number Publication date
FR2066916A2 (en) 1971-08-13
CH516975A (en) 1971-12-31
FR2066916B2 (en) 1973-01-12
DE1948011A1 (en) 1971-03-25

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Legal Events

Date Code Title Description
PS Patent sealed
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee