US3841296A - Dressing device - Google Patents

Dressing device Download PDF

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Publication number
US3841296A
US3841296A US00324127A US32412773A US3841296A US 3841296 A US3841296 A US 3841296A US 00324127 A US00324127 A US 00324127A US 32412773 A US32412773 A US 32412773A US 3841296 A US3841296 A US 3841296A
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United States
Prior art keywords
compensating
ram
main body
profile
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 - Lifetime
Application number
US00324127A
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English (en)
Inventor
H Ota
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.)
Toyoda Koki KK
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Toyoda Koki KK
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Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
Application granted granted Critical
Publication of US3841296A publication Critical patent/US3841296A/en
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    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/08—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
    • B24B53/081—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like by means of a template

Definitions

  • ABSTRACT [30] Foreign Application Priority Data A dressing device for dressing the peripheral surface Jan. 18, 1972 Japan 47-8337 of a grinding Wheel mounted ithin a grindin machine comprising :1 compensating ram and profile ram 52] us. c1 125/11 PH, 5l/l65.87 coaxially aligned with each other Whhi" main body 51 1111.
  • the present invention relates generally to a dressing device, and more particularly to an improved dressing device for dressing the outer periphery of a grinding wheel mounted within a grinding machine.
  • a main body is usually fixedly mounted upon a slidablemember which is, in turn, slidably guided upon a supporting base which is fixedly mounted upon a traverse table. Furthermore, a compensating ram having a single point diamond dresser is slidably received within the main body in orderto preset an initial starting position for the dressing operation, and the main body may be moved toward the grinding wheel by means of the movement of the slidable member relative to the supporting base.
  • the dressing devices conventionally available have resulted in dressing operations exhibit ing very poor quality and a relatively high degree of inaccuracy since such dressing devices cause the production of the phenomenon of chattering and also cannot maintain an established position of the dressing device. That is, the dressing device is not able to be positioned in a stable condition at a required, predetermined position thereof, particularly when dressing operations upon a plurality of grinding wheels are to be performed at the same time.
  • the aforementioned effects influence all the dressing devices upon the traverse table, and consequently, it is impossible to satisfactorily perform dressing operations having the desired high degree of accuracy, and thus the diameter of the workpiece is not always dressed by an amount within the range of acceptable operational tolerances.
  • Another object of the present invention is to provide a dressing device which is provided with a profile ram and a compensating ram coaxially disposed therein.
  • Still another object of the present invention is to provide a dressing device wherein the distance between the upper surface of the traverse table and the axis of the compensating ram is relatively short so as to thereby increase the rigidity and stability thereof.
  • a still further object of the present invention is to provide a dressing device for positively retaining an operational position thereof whereby the dressing operation may be performed with increased efficiency.
  • the compensating ram is arranged in coaxial alignment with the profile ram, thereby preferably securing the main body to the traverse table in a proper preset position thereof.
  • the compensating ram and profile ram are respectively operably connected with a compensating means and an actuating means so as to adjust the position of the dressing tool and feed the same toward the grinding wheel.
  • a supporting base 1 is mounted upon a wheel slide, not shown, and a guide member 2, which is fixedly mounted upon the supporting base 1, has a longitudinal guide surface 2a thereon which extends perpendicularly to the axis of a grinding wheel 17 which is also rotatably mounted upon the wheel slide, not shown.
  • a feeding table 3 is slidably movable along the guide surface 2a of the guide member 2 toward and away from the grinding wheel 17 and a dovetail groove 3a is formed therein in a longitudinal direction which extends parallel to the axis of the grinding wheel 17.
  • Firmly keyed to the lower surface of the feeding table 3 is a feed nut 4 with which a feed screw 5 is threadably engaged.
  • the feed screw 5 is operably connected to a table feeding device, not shown, which is provided for rotating screw 5 a predetermined amount through a ratchet feeding mechanism, for example, which may be installed at the rear side of the supporting base 1.
  • a traverse table 32 which is provided with a projection 32a at the lower portion thereof, is associated with the feeding table 3, portion 32a being in complementary engagement with the dovetail groove 3a, and may be slidably traversed in a direction extending parallel to the axis of the grinding wheel 17 by means of an actua- 'tor, not shown. Further, T-shaped grooves 32b are formed upon the upper portion of the traverse table 32.
  • Fixedly attached to the feeding table 3 is a place member 56 upon which a sustaining member 55 is mounted equipped with a template 54 having a profile face 54a thereon corresponding to the profile required upon the outer periphery of the grinding wheel 17.
  • a main body 34 of a dressing device generally indicated by the reference character 25 is provided with an axially extending bore 34a and a cylindrical bore 34b which is arranged in parallel with the bore 34a.
  • the main body 34 is fixedly mounted upon the traverse table 32 by means of bolts 35 which extend therethrough for threaded engagement with T-shaped nuts 33 disposed within the T-shaped grooves 32b, thereby positively securing the main body to the traverse table.
  • a compensating ram 36 and a profile ram 37 are tandem disposed within a bushing 29 which is fitted within the bore 34a and are sustained by stroke bearings 38 and 39, and 40 and 41, respectively.
  • the compensating ram 36 is provided with a cylindrical bore 36b, at the right end portion thereof, within which a bushing 44 and a nut 45, having threadable portions 44a and 45a, respectively, are positively received in coaxial alignment therewith.
  • a diamond holder 46 having a single point diamond dresser 47 is fixedly mounted upon the compensating ram 36 at the left end portion thereof.
  • a detent pin 42, having an engaging portion 42a and which is fixed within the main body 34, is lockingly engaged with a key-way 36a which is machined upon the compensating ram 36 within a plane extending through the axis of ram 36, thereby preventing rotational movement thereof relative to body 34.
  • Axially provided within the profile ram 37 is a bore 37a within which a rotating shaft 43 is rotatably supported through anti-friction bearings 48 and 49.
  • a feed screw 43a is integrally formed upon the rotating shaft 43 at the left end portion thereof and is threadably engaged with respective threadable portions 44a and 45a of the bushing 44 and nut 45.
  • a shaft 43b extends from the right end portion of the rotating shaft 43 and is securingly supported within a supporting member 57 to which a worm wheel 58 is secured by means of a key 59, a connecting member 60, and another key 63.
  • the supporting member 57 is disposed within a cylindrical bore 68a provided within a main body 68 of a compensating device, generally indicated by the reference character 27, which is fixedly attached to the right side of the profile ram 37 which provides the compensating ram with a feed movement therefor toward the grinding wheel 17.
  • a drive shaft 66 is rotatably journaled within a bearing 67, and a worm 66a integrally formed with shaft 66 meshes with the worm wheel 58.
  • a stylus 53 is fixedly mounted upon the flange portion 37b, being received within the bore 37d and contacting the profile face 54a of the template 54 when the profile ram 37 is advanced toward the grinding wheel 17.
  • the dressing device being capable of performing dressing operations within a grinding machine so as to grind the crankpins or journal portions of a crankshaft. Therefore, a plurality of grinding wheels 17 are respectively confronted with a series of dressing devices which are operatively mounted upon the traverse table 32.
  • each of the single point diamond dressers 47 must be adjusted in accordance with the diameters of the portions of the workpiece to be ground.
  • the amount of adjustment varies for the respective dressing device. That is, when a knob 69 within the compensating device 27 or other preferable actuating device, not shown, is manipulated to rotate the drive shaft 66 and the worm 6611, the rotational motion thereof is transmitted to the rotating shaft 43 through the worm wheel 58 and the supporting member 57, and through the key 59, the connecting member 60, and the key 63.
  • the compensating ram 36 in which the bushing 44 and nut 45 are engageable with the feed screw 43a, is accordingly moved longitudinally toward the grinding wheel 17 with the aid of the compensating device 27 which compensates for the position of the diamond dresser 47, and thus, the compensating operation for commencing the dressing operation is completely performed.
  • traverse table 32 is moved in a traverse direction along the outer periphery of the grinding wheel 17 by the actuator not shown, whereby the pe ripheral surface of the grinding wheel 17 is dressed by means of the diamond dresser 47' duplicating the profile face 54a of the template 54, without the occurrence of the chattering phenomenon within the main body 34.
  • the dressing device 25 When the dressing operation of the grinding wheel 17 is completed, the dressing device 25 is restored or retracted to the original position thereof, that is, it is released from co-operation with the grinding wheel.
  • the feeding table 3 is advanced by a predetermined amount by rotation of the feed screw 5 so as to thereby feed the diamond dresser 47 toward the ginding wheel before the dressing operation is started.
  • a device for dressing a peripheral surface of a grinding wheel mounted upon a grinding machine comprising:
  • a feeding table slidably mounted upon said supporting base so as to be movable toward and away from said grinding wheel by means of a table feeding device;
  • a template member fixedly mounted on said feeding table and having a profile face thereon;
  • a traverse table slidably movable upon said feeding table by suitable drive means in a direction parallel to the axis of said grinding wheel;
  • a compensating ram means slidably mounted within said main body and provided with a dressing tool for dressing the outer periphery of said grinding wheel;
  • a profile ram means slidably disposed in tandem relationship to said compensating ram means within said main body;
  • a stylus fixedly attached to one end of said profile ram for engageable co-operation with said template member
  • actuating means provided within said main body and integrally associated with said profile ram means for moving said profile ram means together with said compensating ram means toward said grinding wheel to thereby urge said stylus to contact said template member;
  • said feeding means comprises:
  • a compensating device fixedly mounted upon said profile ram means and operably connected with said rotating shaft member for compensating the position of said dressing tool.
  • a device as set forth in claim 2, wherein said compensating device comprises:
  • drive shaft means rotatably journaled within said lastmentioned main body of said compensating device and provided with a worm member which is engaged with said worm wheel for rotating said rotating shaft member.
  • a device as set forth in claim 2, wherein said actuating means comprises:
  • a hydraulic cylinder provided within said main body

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
US00324127A 1972-01-18 1973-01-16 Dressing device Expired - Lifetime US3841296A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972008337U JPS4885292U (enrdf_load_stackoverflow) 1972-01-18 1972-01-18

Publications (1)

Publication Number Publication Date
US3841296A true US3841296A (en) 1974-10-15

Family

ID=11690367

Family Applications (1)

Application Number Title Priority Date Filing Date
US00324127A Expired - Lifetime US3841296A (en) 1972-01-18 1973-01-16 Dressing device

Country Status (5)

Country Link
US (1) US3841296A (enrdf_load_stackoverflow)
JP (1) JPS4885292U (enrdf_load_stackoverflow)
AU (1) AU454513B2 (enrdf_load_stackoverflow)
FR (1) FR2168815A5 (enrdf_load_stackoverflow)
GB (1) GB1365053A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501092A (en) * 1981-09-15 1985-02-26 Staveley Machine Tools Limited Automatic grinding
US4899718A (en) * 1987-10-22 1990-02-13 Toyoda Koki Kabushiki Kaisha Apparatus for truing grinding wheel
US5163794A (en) * 1991-04-22 1992-11-17 Cincinnati Milacron Inc. Single plane articulated axis workslide
CN102729149A (zh) * 2012-07-23 2012-10-17 山东省宇捷轴承制造有限公司 砂轮修整器
CN102765058A (zh) * 2012-07-25 2012-11-07 无锡机床股份有限公司 砂轮圆弧修整器
CN103949977A (zh) * 2014-05-19 2014-07-30 无锡市飞象精密机床制造有限公司 砂轮修整器
CN106625249A (zh) * 2015-10-29 2017-05-10 安徽白鹰精密机床有限公司 一种砂轮修整装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105889A (ja) * 1986-10-22 1988-05-11 Okuma Mach Works Ltd Ｎｃ砥石修正装置
CN104827400B (zh) * 2014-11-19 2017-05-31 襄阳振本传动设备有限公司 磨床仿形砂轮修整器
CN104827402B (zh) * 2014-11-19 2017-01-11 襄阳振本传动设备有限公司 自动磨床带快进的仿形砂轮修整器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565687A (en) * 1947-06-20 1951-08-28 Cincinnati Milling Machine Co Precision wheel truing mechanism
US2722212A (en) * 1952-05-20 1955-11-01 Erna Lindner Machine for truing or dressing grinding wheels by reproduction from a pattern
US2838040A (en) * 1956-04-30 1958-06-10 Landis Tool Co Dresser for multiple grinding wheels
US2851827A (en) * 1957-11-08 1958-09-16 Norton Co Multiple wheel grinding machine
US3079907A (en) * 1960-12-16 1963-03-05 Landis Tool Co Profile dresser with follower rigidly supported in one direction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB957411A (en) * 1959-09-18 1964-05-06 Birmingham Small Arms Co Ltd Improvements in or relating to centreless grinding machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565687A (en) * 1947-06-20 1951-08-28 Cincinnati Milling Machine Co Precision wheel truing mechanism
US2722212A (en) * 1952-05-20 1955-11-01 Erna Lindner Machine for truing or dressing grinding wheels by reproduction from a pattern
US2838040A (en) * 1956-04-30 1958-06-10 Landis Tool Co Dresser for multiple grinding wheels
US2851827A (en) * 1957-11-08 1958-09-16 Norton Co Multiple wheel grinding machine
US3079907A (en) * 1960-12-16 1963-03-05 Landis Tool Co Profile dresser with follower rigidly supported in one direction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501092A (en) * 1981-09-15 1985-02-26 Staveley Machine Tools Limited Automatic grinding
US4899718A (en) * 1987-10-22 1990-02-13 Toyoda Koki Kabushiki Kaisha Apparatus for truing grinding wheel
US5163794A (en) * 1991-04-22 1992-11-17 Cincinnati Milacron Inc. Single plane articulated axis workslide
CN102729149A (zh) * 2012-07-23 2012-10-17 山东省宇捷轴承制造有限公司 砂轮修整器
CN102765058A (zh) * 2012-07-25 2012-11-07 无锡机床股份有限公司 砂轮圆弧修整器
CN103949977A (zh) * 2014-05-19 2014-07-30 无锡市飞象精密机床制造有限公司 砂轮修整器
CN106625249A (zh) * 2015-10-29 2017-05-10 安徽白鹰精密机床有限公司 一种砂轮修整装置

Also Published As

Publication number Publication date
GB1365053A (en) 1974-08-29
FR2168815A5 (enrdf_load_stackoverflow) 1973-08-31
AU5094473A (en) 1974-08-08
JPS4885292U (enrdf_load_stackoverflow) 1973-10-16
AU454513B2 (en) 1974-10-31

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