EP0169971A1 - Universalschleifmaschine für Massenfertigung - Google Patents

Universalschleifmaschine für Massenfertigung Download PDF

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Publication number
EP0169971A1
EP0169971A1 EP85103276A EP85103276A EP0169971A1 EP 0169971 A1 EP0169971 A1 EP 0169971A1 EP 85103276 A EP85103276 A EP 85103276A EP 85103276 A EP85103276 A EP 85103276A EP 0169971 A1 EP0169971 A1 EP 0169971A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
wheel
grinding
slide
grinding machine
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Withdrawn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
EP85103276A
Other languages
English (en)
French (fr)
Inventor
Luciano Barbisan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0169971A1 publication Critical patent/EP0169971A1/de
Withdrawn legal-status Critical Current

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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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/01—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor for combined grinding of surfaces of revolution and of adjacent plane surfaces on work
    • 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

  • the present invention relates to grinding machines for cylindrical or flat surfaces capable of performing high productions fully automatically.
  • the old USA patent n. 2.699.0108 shows a grinding machine where the main grinding wheel is mounted on a rotating table on which is also mounted a grinding device consisting of two diamonds. These two different tools - diamonds - wear differently and therefore cannot guarantee high precision. After a few dressings, the edge of the grinding wheel is no longer in the desired position.
  • the aim of the present invention is to produce a universal grinding machine making it possible to obtain, with the maximum precision and the minimum possible loss of time, the grinding of both cylindrical and plane surfaces arranged perpendicularly to the axis of the room.
  • the above-mentioned object was obtained on a grinding machine where the grinding wheel and all of its actuating means are mounted on a table which can rotate around a fixed vertical axis, and on the same table is also mounted, using a group of slides, a single diamond wheel used for dressing the grinding wheel.
  • the part P to be rectified is mounted between the point 31 provided on the workpiece head 1 and the tailstock 32 supported by the support 2.
  • the workpiece head 1 is equipped with robust, high-precision rotating supports which allow parts P having large diameters to be ground, even without the support of the tailstock 32.
  • the workpiece head 1 and the support 2 of the tailstock 32 are mounted on the slide 3 on which it is possible to record the reciprocal distance between the tip 31 and the tailstock 32, so as to adapt to each of the sizes of the pieces P to be corrected.
  • the slide 3 is further provided with slides 27 and 28 which make it possible to slide the slide 3 relative to the base 26, in the longitudinal direction of the axis XX of the part P.
  • a special electronic device 4 makes it possible to give the slide 3 a position such that the faces of the part P to be ground are as close as possible to the grinding wheel 5.
  • the grinding wheel 5 is mounted, using its flanges 6, on a robust shaft 10 supported by special hydrostatic or hydrodynamic type bearings which are contained in a grinding wheel support 7 where the lubricating oil is collected and which , after being filtered, is returned under pressure to the bearings.
  • the rotation of the grinding wheel shaft 10 is carried out by a motor 8 connected, through the belt 33, to the pulley 9 fixed using known anti-vibration means (not shown) to the grinding wheel support 7 of so that no vibration is transmitted to it.
  • the grinding wheel support 7 is fixed to the table 11 which moves on longitudinal slides provided on the platform 34 which can rotate around a pivot 24 fixed on the base 26.
  • the longitudinal movement of the table 11 relative at the rotating platform 34 is printed by the stepping motor 12 for precision advances, while the larger movements of approach and away are carried out by a hydraulic piston 13 contained in the jacket 14.
  • This piston 13 is preferably carried out by means of a special device with rapid actuation which makes it possible to quickly leave free sufficient space to easily assemble and disassemble the part P to be rectified.
  • the device for regenerating the grinding wheel is mounted on the rear part of the table 11 behind the wheel rectifier 5. It essentially consists of a lining wheel 15 actuated by a motor 35.
  • the lining device is fixed to a longitudinal carriage 16 which is in turn supported by a transverse carriage 17, the latter being mounted rolling on the table 11.
  • the carriage 17 has a longitudinal precision movement making it possible to remove. the grinding wheel 5, for each of the regeneration operations, a quantity of material always identical.
  • the longitudinal displacement of the carriage 17 is obtained by means of a stepping motor 21 and a reduction gear 22 acting on a very precise ball screw 23.
  • the transverse movement of the carriage 16 is done using a stepping motor.
  • the movements of the longitudinal carriage 16 and the transverse carriage 17 are controlled by the end 30 of the screw 19 which follows the template 18 fixedly mounted on the table 11. These movements cause the diamond wheel 15 to regenerate the grinding wheel according to the desired shape.
  • the screw 19 allows the regenerating wheel 15 to be brought closer and closer to the rectifying wheel 5, thereby compensating for the amount removed each time by the regenerative wheel.
  • the lead screw which meshes with the screw 19 is integral with the motor 35 which actuates the regenerative grinding wheel 15.
  • the grinding wheel trice is quickly brought closer using the rapid advance device up to a few hundredths of m. of the room; after which the stepping motor 8 is brought into play, which advances the grinding wheel by first making it do a roughing cycle and then a finishing cycle, as previously established, until reaching the final dimension which is measured by the self-calibration fork.
  • the wheel is automatically returned to its starting position, first by means of the stepping motor, then by rapid hydraulic removal.
  • the carriage 17 is advanced by a few hundredths of min. with respect to the stepping motor 21, the reduction gear 22 and the precision screw 23.
  • the grinding wheel 5 automatically returns to its initial position, ready to grind another batch of parts.
  • the machine stops automatically when, due to regeneration, the wheel decreases in diameter so that it can become dangerous.
  • the platform 34 When it is desired to rectify parts having flat surfaces perpendicular to the axis of the part, the platform 34 must be rotated around the pivot 24 in the direction of the arrows A in FIG. 2, until a surface of the grinding wheel is in position perpendicular to the axis of the slide 3 carrying the tip 31 and the tailstock 32, which amounts to saying perpendicular to the axis of the part P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP85103276A 1984-07-17 1985-03-21 Universalschleifmaschine für Massenfertigung Withdrawn EP0169971A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21927/84A IT1176410B (it) 1984-07-17 1984-07-17 Rettificatrice universale per grandi produzioni
IT2192784 1984-07-17

Publications (1)

Publication Number Publication Date
EP0169971A1 true EP0169971A1 (de) 1986-02-05

Family

ID=11188913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103276A Withdrawn EP0169971A1 (de) 1984-07-17 1985-03-21 Universalschleifmaschine für Massenfertigung

Country Status (2)

Country Link
EP (1) EP0169971A1 (de)
IT (1) IT1176410B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000045992A1 (en) * 1999-02-03 2000-08-10 Unova U.K. Limited Angle head grinding method and apparatus
CN101767314B (zh) * 2010-01-28 2011-08-31 洛阳轴研科技股份有限公司 轴承外套圈滚道磨削加工使用的砂轮修整方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424765A (en) * 1918-03-16 1922-08-08 Pratt & Whitney Co Wheel-dressing mechanism
US2292947A (en) * 1941-07-23 1942-08-11 Norton Co Grinding wheel truing apparatus
US2315104A (en) * 1941-11-12 1943-03-30 Thompson Grinder Co Inclinable grinder spindle
US2600548A (en) * 1946-09-05 1952-06-17 Brown & Sharpe Mfg Grinding wheel truing apparatus
US2699018A (en) * 1951-06-30 1955-01-11 Devilbiss Co Automatic grinding wheel dresser and feed control
US3313285A (en) * 1964-04-27 1967-04-11 Landis Tool Co Impregnated indexing roller for grinding wheel dressers
US4160438A (en) * 1977-02-17 1979-07-10 Toyoda-Koki Kabushiki-Kaisha Profiling apparatus for a disk-like article having a cylindrical face and rounded corners
US4219972A (en) * 1977-10-17 1980-09-02 Seiko Seiki Kabushiki Kaisha Control apparatus for a grinding machine
FR2519282A1 (fr) * 1981-12-31 1983-07-08 Gendron Machine pour rectifier simultanement deux pieces, comportant au moins une portee cylindrique et un epaulement transversal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1424765A (en) * 1918-03-16 1922-08-08 Pratt & Whitney Co Wheel-dressing mechanism
US2292947A (en) * 1941-07-23 1942-08-11 Norton Co Grinding wheel truing apparatus
US2315104A (en) * 1941-11-12 1943-03-30 Thompson Grinder Co Inclinable grinder spindle
US2600548A (en) * 1946-09-05 1952-06-17 Brown & Sharpe Mfg Grinding wheel truing apparatus
US2699018A (en) * 1951-06-30 1955-01-11 Devilbiss Co Automatic grinding wheel dresser and feed control
US3313285A (en) * 1964-04-27 1967-04-11 Landis Tool Co Impregnated indexing roller for grinding wheel dressers
US4160438A (en) * 1977-02-17 1979-07-10 Toyoda-Koki Kabushiki-Kaisha Profiling apparatus for a disk-like article having a cylindrical face and rounded corners
US4219972A (en) * 1977-10-17 1980-09-02 Seiko Seiki Kabushiki Kaisha Control apparatus for a grinding machine
FR2519282A1 (fr) * 1981-12-31 1983-07-08 Gendron Machine pour rectifier simultanement deux pieces, comportant au moins une portee cylindrique et un epaulement transversal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000045992A1 (en) * 1999-02-03 2000-08-10 Unova U.K. Limited Angle head grinding method and apparatus
US6991519B2 (en) 1999-02-03 2006-01-31 Unova Uk Limited Angle head grinding method
CN101767314B (zh) * 2010-01-28 2011-08-31 洛阳轴研科技股份有限公司 轴承外套圈滚道磨削加工使用的砂轮修整方法

Also Published As

Publication number Publication date
IT8421927A0 (it) 1984-07-17
IT8421927A1 (it) 1986-01-17
IT1176410B (it) 1987-08-18

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

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17P Request for examination filed

Effective date: 19860619

17Q First examination report despatched

Effective date: 19870212

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18D Application deemed to be withdrawn

Effective date: 19881215