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GB2108024A - Cylindrical grinding machine with automatic workrest wear compensation - Google Patents

Cylindrical grinding machine with automatic workrest wear compensation Download PDF

Info

Publication number
GB2108024A
GB2108024A GB08227023A GB8227023A GB2108024A GB 2108024 A GB2108024 A GB 2108024A GB 08227023 A GB08227023 A GB 08227023A GB 8227023 A GB8227023 A GB 8227023A GB 2108024 A GB2108024 A GB 2108024A
Authority
GB
United Kingdom
Prior art keywords
workrest
workpiece
grinding wheel
size
gauge
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.)
Granted
Application number
GB08227023A
Other versions
GB2108024B (en
Inventor
Glenn M Snyder
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.)
Western Atlas Inc
Original Assignee
Litton Industrial Products Inc
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 Litton Industrial Products Inc filed Critical Litton Industrial Products Inc
Publication of GB2108024A publication Critical patent/GB2108024A/en
Application granted granted Critical
Publication of GB2108024B publication Critical patent/GB2108024B/en
Expired legal-status Critical Current

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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
    • B24B47/206—Drives or gearings; Equipment therefor relating to feed movement for centreless grinding machines; for machines comprising work supports, e.g. steady rests
    • 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
    • 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
    • B24B49/18—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 presence of dressing tools
    • B24B49/183—Wear compensation without the presence of dressing tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

A cylindrical grinding machine for effecting stock removal from a workpiece rotatably driven about a predetermined axis comprises a grinding wheel assembly, means for advancing the grinding wheel assembly according to a predetermined stock removal program, a gauge for sensing the actual size of the workpiece, and a workrest. The machine also includes means for advancing the workrest assembly according to a predetermined infeed program, means for further advancing the workrest when the grinding wheel assembly and workrest infeed programs have been completed and the gauge has not sensed size, and means for terminating the advancement of the workrest when the gauge senses the selected finish size. <IMAGE>

Description

SPECIFICATION Cylindrical grinding machine with automatic workrest wear compensation The present invention relates to cylindrical grinding machines which effect stock removal from a workpiece rotatively driven about a predetermined axis. Stock removal is effected by a rotating grinding wheel which is advanced into abrasive engagement with the rotating workpiece in accordance with a set infeed program. To maintain the workpiece in its desired nondeflected condition, an opposing workrest is conventionally also advanced into opposing engagement with the rotating workpiece in accordance with a set infeed program. When both have been fully advanced, the workpiece should be, but may not be, on size.
It is an object of the present invention to provide means for further grinding the rotating workpiece to size in the event size has not been achieved.
It is another object to automatically compensate for workrest shoe wear thereby automatically maintaining optimum shoe force or pressure against the workpiece.
It is a further object to provide a very discrete final feed for achieving finished workpiece size.
Other objects and advantages of the present invention will become apparent from the following portion of the specification and from the accompanying drawings which illustrate a presently preferred embodiment incorporating the principles of the invention.
Referring to the drawings: Figure 1 is a schematic presentation of the grinding wheel, workpiece and workrest of a cylindrical grinding machine; and Figure 2 is a schematic view of the feed control circuit for the workrest and grinding wheel shown in Figure 1.
A cylindrical grinding machine generally includes a grinding wheel assembly including a grinding wheel which may be advanced towards or retracted from a rotatively driven workpiece pursuant to a selected program defined by a Grinding Wheel Assembly Feed Control. The Grinding Wheel Assembly includes a gauge which will sense when size is reached.
The cylindrical grinding machine also includes a workrest assembly including a workrest having a workpiece engaging shoe which may also be advanced toward or retracted from the workpiece pursuant to a selected program defined by a Workrest Assembly Feed Control.
In accordance with the present invention, the grinding wheel is fully advanced to a location which does not bring the workpiece to size. Such may occur intentionally by utilizing a wheelhead resolver to terminate infeed at a predetermined point approaching but not at size. Accordingly, the gauge senses this oversize condition with the grinding wheel and workrestfully advanced and the workrest assembly will be further advanced a small amount until size is sensed by the gauge.
Workrest shoe wear will, accordingly, be automatically compensated and the workrest can be set up by manually coarse positioning the shoe. There is no need to precisely position the shoe since the vernier or final position of the shoe will be automatically provided through infeeding of the workrest to satisfy the in process gauge.
Claims
1. A cylindrical grinding machine for effecting stock removal from a workpiece rotatably driven about a predetermined axis, comprising a grinding wheel assembly, means for advancing said grinding wheel assembly according to a predetermined stock removal program, a gauge for sensing the actual size of the workpiece, a workrest, means for advancing said workrest according to a predetermined infeed program, characterized by means for further advancing said workrest when said grinding wheel assembly and workrest infeed programs have been completed and said gauge has not sensed size, and means for terminating the advancement of said workrest when said gauge senses the selected finish size.
2. A cylindrical grinding machine including a workpiece feed and stock removal system substantially as hereinbefore described with reference to the accompanying drawings.
3. A workpiece feed and stock, removal method or system, substantially as hereinbefore described with reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Cylindrical grinding machine with automatic workrest wear compensation The present invention relates to cylindrical grinding machines which effect stock removal from a workpiece rotatively driven about a predetermined axis. Stock removal is effected by a rotating grinding wheel which is advanced into abrasive engagement with the rotating workpiece in accordance with a set infeed program. To maintain the workpiece in its desired nondeflected condition, an opposing workrest is conventionally also advanced into opposing engagement with the rotating workpiece in accordance with a set infeed program. When both have been fully advanced, the workpiece should be, but may not be, on size. It is an object of the present invention to provide means for further grinding the rotating workpiece to size in the event size has not been achieved. It is another object to automatically compensate for workrest shoe wear thereby automatically maintaining optimum shoe force or pressure against the workpiece. It is a further object to provide a very discrete final feed for achieving finished workpiece size. Other objects and advantages of the present invention will become apparent from the following portion of the specification and from the accompanying drawings which illustrate a presently preferred embodiment incorporating the principles of the invention. Referring to the drawings: Figure 1 is a schematic presentation of the grinding wheel, workpiece and workrest of a cylindrical grinding machine; and Figure 2 is a schematic view of the feed control circuit for the workrest and grinding wheel shown in Figure 1. A cylindrical grinding machine generally includes a grinding wheel assembly including a grinding wheel which may be advanced towards or retracted from a rotatively driven workpiece pursuant to a selected program defined by a Grinding Wheel Assembly Feed Control. The Grinding Wheel Assembly includes a gauge which will sense when size is reached. The cylindrical grinding machine also includes a workrest assembly including a workrest having a workpiece engaging shoe which may also be advanced toward or retracted from the workpiece pursuant to a selected program defined by a Workrest Assembly Feed Control. In accordance with the present invention, the grinding wheel is fully advanced to a location which does not bring the workpiece to size. Such may occur intentionally by utilizing a wheelhead resolver to terminate infeed at a predetermined point approaching but not at size. Accordingly, the gauge senses this oversize condition with the grinding wheel and workrestfully advanced and the workrest assembly will be further advanced a small amount until size is sensed by the gauge. Workrest shoe wear will, accordingly, be automatically compensated and the workrest can be set up by manually coarse positioning the shoe. There is no need to precisely position the shoe since the vernier or final position of the shoe will be automatically provided through infeeding of the workrest to satisfy the in process gauge. Claims
1. A cylindrical grinding machine for effecting stock removal from a workpiece rotatably driven about a predetermined axis, comprising a grinding wheel assembly, means for advancing said grinding wheel assembly according to a predetermined stock removal program, a gauge for sensing the actual size of the workpiece, a workrest, means for advancing said workrest according to a predetermined infeed program, characterized by means for further advancing said workrest when said grinding wheel assembly and workrest infeed programs have been completed and said gauge has not sensed size, and means for terminating the advancement of said workrest when said gauge senses the selected finish size.
2. A cylindrical grinding machine including a workpiece feed and stock removal system substantially as hereinbefore described with reference to the accompanying drawings.
3. A workpiece feed and stock, removal method or system, substantially as hereinbefore described with reference to the accompanying drawings.
GB08227023A 1981-10-13 1982-09-22 Cylindrical grinding machine with automatic workrest wear compensation Expired GB2108024B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31083381A 1981-10-13 1981-10-13

Publications (2)

Publication Number Publication Date
GB2108024A true GB2108024A (en) 1983-05-11
GB2108024B GB2108024B (en) 1985-08-21

Family

ID=23204305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08227023A Expired GB2108024B (en) 1981-10-13 1982-09-22 Cylindrical grinding machine with automatic workrest wear compensation

Country Status (2)

Country Link
JP (1) JPS58137557A (en)
GB (1) GB2108024B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016166036A1 (en) * 2015-04-13 2016-10-20 Erwin Junker Grinding Technology A.S. Method and system for grinding the exterior of shaft parts between tips

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135274A (en) * 1974-09-20 1976-03-25 Hitachi Ltd DENKAIHO SHAGA DENSHIJU

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016166036A1 (en) * 2015-04-13 2016-10-20 Erwin Junker Grinding Technology A.S. Method and system for grinding the exterior of shaft parts between tips
CN107530857A (en) * 2015-04-13 2018-01-02 埃尔温容克尔研磨技术股份公司 For carrying out the method and system of outer grinding to the axle portion part between pinnacle
US10766114B2 (en) 2015-04-13 2020-09-08 Erwin Junker Grinding Technology A.S. Method and system for grinding the exterior of shaft parts between tips

Also Published As

Publication number Publication date
JPH0551431B2 (en) 1993-08-02
JPS58137557A (en) 1983-08-16
GB2108024B (en) 1985-08-21

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Legal Events

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PCNP Patent ceased through non-payment of renewal fee