US3928943A - Device for the feed of grinding tools to grinding machines - Google Patents

Device for the feed of grinding tools to grinding machines Download PDF

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Publication number
US3928943A
US3928943A US505059A US50505974A US3928943A US 3928943 A US3928943 A US 3928943A US 505059 A US505059 A US 505059A US 50505974 A US50505974 A US 50505974A US 3928943 A US3928943 A US 3928943A
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Prior art keywords
carriage
grinding
trimming
support
template
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Expired - Lifetime
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US505059A
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English (en)
Inventor
Walter Wirz
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Reishauer AG
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Reishauer AG
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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
    • 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
    • B24B49/186—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 taking regard of the wear of the dressing tools

Definitions

  • Sheet 4 of 4 DEVICE FOR THE FEED OF GRINDING TOOLS TO GRINDING MACHINES This invention relates to grinding machines such as the circular or thread-grinding type and, more particularly, to a trimming tool feed device for use in conjunction therewith.
  • the amount of change in the position of the grinding tool with reference to the workpiece to compensate for the decrease in size of the grinding disk taking place during the trimming corre sponds exactly with the amount of feed of the adjusting or trimming tool.
  • the trimming tool Since during trimming the trimming tool is subjected to a wear, that is, a constant change in size and the rigidity of the grinding tool as the diameter decreases and also the rigidity of the grinding and the adjustingcarriagc, changes on account of the different position in the associated guideways, the amount by which the trimming tool is fed against the grinding tool does not correspond with the effective diminution of the diameter of the grinding tool caused by the trimming operation.
  • the feed of the grinding tool in respect of the work-piece corresponding to the amount of feed of the trimming tool accordingly results in work-pieces not exactly accurate as to size.
  • FIG. 1 shows a front view in elevation of a thread grinding machine
  • FIG. 2 shows a longitudinal section taken through the grinding carriage along line IIII of FIG. 3;
  • FIG. 3 shows a vertical section taken through the adjusting or trimming carriage along line IIIIII of FIG. 2;
  • FIG. 4 shows a section transversely through the support or through the slide device arranged in it along IV-IV of FIG. 2;
  • FIGS. 5 to 8 are illustrations of the slide devices with FIG. 7 is a top view of the slide device in which the template has a straight profile and the groove a cam profile;
  • FIG. 8 is a top view of the :slide device in which the templates and the grooves have a straight profile
  • FIGS. 9 and 10. are diagrammatic showings of the sliding movements of support and trimming carriages.
  • FIG. 11 is a diagrammatic showing as to the production of the additional sliding.
  • the thread grinding machine shown in FIG. 1 has a frame or bed 1 which serves as base for the slidable reception of the work-piece carriage 2 and the grinding carriage 3.
  • the workpiece headstock 4 On the work-piece carriage 2 is fastened the workpiece headstock 4, in which the workpiece spindle 5 is rotatably positioned.
  • the tailstock 6 On the table surface F of the work-piece carriage 2 is arranged the tailstock 6 so as to be slidable longitudinally.
  • the work-piece 7 is clamped in the normal manner between the centering tips 8 and 9 and is set into rotation by the actuator disk 10 which is connected with the work-piece spindle 5 through a lathe dog 11 or another actuator means.
  • the drive of the work-piece spindle S and the slide device of the work-piece carriage 2 as well as other elements of the machine tool having no influence on the device of the invention are not specifically shown or mentioned as they are generally known in machine tools of the type under consideration.
  • the grinding carriage 3 is slidably arranged in a guideway G on the frame 1 transversely to the axis of the work-piece H.
  • the sliding or shifting of the grinding carriage 3 shown in FIGS. 2 and 3 is accomplished by rotation of the hand-wheel 13 with the aid of a rotatable thread spindle 12 axially positioned in the grinding carriage 3 and secured in. the spindle nut thread I on the frame 1.
  • a swingable rocker 14 (FIGS. 2, 3) on which is disposed the support 15 slidable transversely to the axis H of the work-piece.
  • the grinding motor 16 On the support 15 is fixed the grinding motor 16 which, through the grinding spindle 17 (FIG. 3), drives the grinding wheel 21 rotatably positioned in the support 15.
  • the support 15 carries the trimming carriage 18 slidably arranged transversely to the grind.- ing wheel axis K, to which is clamped a trimming device 19corresponding to the particular purpose, with one or more trimming tools 20 (FIG. 2).
  • the grinding wheel 21 as well as the support 15 with the grinding wheel 21, the grinding motor 16, the grinding spindle .17, the trimming carriage 18 and the trimming device 19 may be disposed at a predetermined angle 7 (FIG. 1) with respect to the work-piece axis H.
  • the rocker 14 is fixed in the desired position.
  • the trimming carriage 1.8 may be clamped, as already mentioned, any desired trimming device 19 depending on the desired purpose.
  • the trimming device 19 For clamping the trimming device 19 (FIG. 2) in the proper position, there are provided-on the adjusting carriage 18, a wedge shaped stop-strip 37 and a straight stop-strip 38 which are fastened withscrews 3) on the adjusting carriage 18.
  • the trimming device 19 is tightly held in ,place with a clamping chucking wedge 41 secured to the carriage 18 with screws 40.
  • the trimming device 19 shown in FIG. 2 is used toadjust or trim a grinding disk 21 which is intended for the grinding of trapezoidal-threads (FIG. 3).
  • the trimming tool 20 is arranged in a carriage'42 which is'slidingly disposed parallel to the grinding wheel axis K and is slidingly moved by means of the thread spindle 43 rotatable by a hand wheel 44.
  • the support 15 is slidingly disposed in the groove L of the rocker 14 transversely to the axis H of the workpiece.
  • a shifting of the support 15 which only serves for the adjusting compensation of the grinding disk 21, however, takes place solely in connection with a simultaneous shifting of the trimming carriage 18 in the same direction.
  • Thelatter is slidably arranged in a groove M on the support 15 to move transversely to the grinding disk axis K.
  • the simultaneous shifting of the support 15 and the adjusting carriage 18 takes place by means of rotation of the hand-wheel 23 with which the thread spindle 24 is connected'and which has a left-hand pitch and is secured in the spindle nut thread N of the trimming carriage 18.
  • the threaded spindle 24 is held in an axial bearing 25 (FIGS.
  • the trimming carriage 18 and with it the trimming tool 20 is fed on the support 15 for a given amount B (FIG. 9) against the grinding wheel 21 positioned on the support 15.
  • the support 15 with the grinding disk 21 and the adjusting carriage 18 is also moved by means of the spindle nut 27 with left-handed pitch likewise'set in rotation by the hand-wheel 23 (FIG. 2) by a similar amount A toward the work-piece 7.
  • the mentioned amount of feed B of the adjusting carriage 18 caused by the rotational movement of the associated threaded spindle 24 corresponds exactly with the amount of feed A of the support 15 or the grinding disk 21 respectively, agains't the work-piece 7.
  • the wear of the trimming tool-20 and the changeable rigidities of the parts mentioned above result'in'the layer T actually removed by trimming the grinding disk 21 being smaller than the amount of feed B on the adjusting tool 20 (FIG. 9).
  • the diameter D of the trimmed grinding disk 21 is accordingly greater by an amount 2C than the desired diameter D1.
  • the amount 2C corresponds to the wear of the trimming tool 21) and that part of the elastic deformation dependent upon the rigidities of the parts mentioned above.
  • the work-piece 7 has after grinding a diameter d1 (FIG. 9) which is smaller than the required diameter d by the amount of 1 riage would have to be increasedby the amount C, that is, by the so-callcd correctionalshifting. In other words",
  • the new device for carrying out the correctional shifting of the trimming carriage 18 (see FIG. so that on the grinding disk 21- a layer'of the depth Tl will be removed which corresponds to the I amount of feed A of the grinding disk 21, that is
  • the new device for carrying out the correctional shifting of the trimming carriage 18 (.FIGS. 2, 4, 5, 6, 7 and 8) consists .of an exchangeable slide member 30 which is for slidable movement in the support transversely to the guide L which guides the movement of support 15.
  • the slide member 30 has a groove P whose shape may be-empirically determined.
  • a slide bolt 31 attached to longitudinally slidable .axial bearing slides freely in groove-P free from play;
  • a positive or negative longitudinal shifting movement of the axial bearing 25, of the threaded spindle 24, of the trimming carriage 18 and the trimming device 19 itself, with reference to the support 15 or with reference to the grinding-disk 21 associated with the latter is correlated with each shifting movement of the slide member following the path'of the groove P and the direction of movement of the slide member 30.
  • the groove P is a straight slot, (FIGS. 6"and 8) is only inclined to the sliding direction of the slide member 30, a square key Q (FIGS. 2, 6 and 8) may be arranged on the axial bearing 25 instead of the 'slide'bolt 31.
  • a transverse sliding of the slide member 30 is controlled by a template 32 which is fixed on the adjusting carriage 18 (FIGS. 4, 6, and 8), and on which slides the guide pin 33 connected to the slide member 30.
  • the template 32 when its control edge R extends in a straight line (FIGS. 7, 8) may also be formed as an adjustable arm 34 which is swung about a rotary pin 35 in the desired angle of inclination B and then may be secured in this position by means of a clamping screw 36.
  • the compression springs inserted between the slide member 30 and the support 15 insure an installation wherein the measuring pin 33 is free from play on the'template 32 or on theadjustable arm 34, respectively,
  • the groove P and the template 32 may in each case both have a cam-shaped profile (FIG.,5) or the groove Pia straight and the template 32 a cam-shaped profile (FIG. 6), or vice versa, the groove P may have a cam-shaped and the template 32 or the arm 34 a straight profile (FIG. 7) or also the groove P and the template 32 or the arm 34 mayboth have astraight profile (FIG. 8
  • the template 32 arranged on the adjusting carriage 18 or the adjustable arm 34 fixed to it take part in this shifting.
  • the slide member 30 is pushed by the amount U (FIG. 11) in the support 15 transverselyto its guidemember L (FIGS. 2, 5, 6, 7 and 8).
  • the slide member 30 is positioned in the support while the template 32, 34 is located on the adjusting carriage 18. Obviously the arrangement could be reversed.
  • a feed device for grinding machines having a support with which a grinding wheel is operatively associated and on which it is supported and in which the support and rotatable work-piece are slidable relative to each other comprising:
  • a trimming device mounted on said carriage, said trimming device being adapted to have a trimming tool disposed therein;
  • shifting means for shifting said adjusting carriage transversely to the grinding wheel axis said shifting means including a threaded spindle slidably disposed in the support and in threaded engagement with said adjusting carriage;
  • control means interconnecting the support and said adjusting carriage to provide an additional shifting of the adjusting carriage
  • control means including a slide member which is carried by the support and which is shifted during the adjustment operation transversely to the grinding carriage guide, said slide member having a groove or slot formed therein;
  • the device of claim 1 including a template fixed on said adjusting carriage;
  • a guide pin fixed on said slide member and in contact with said template to control the movement of the adjusting carriage.
  • the device of claim 4 including a template fixed on said adjusting carriage;
  • a guide pin fixed on said slide member and in contact with said template to control the movement of the adjusting carriage.
  • said slide pin is connected to an axial bearing on the threaded spindle for bringing about additional shifting of said threaded spindle and said trimming device.
  • the device of claim 7 including a template fixed on said adjusting carriage;
  • a guide pin fixed on said slide member and in contact with said template to control the movement of the adjusting carriage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US505059A 1973-09-17 1974-09-11 Device for the feed of grinding tools to grinding machines Expired - Lifetime US3928943A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1330373A CH569552A5 (enrdf_load_stackoverflow) 1973-09-17 1973-09-17

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US3928943A true US3928943A (en) 1975-12-30

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US505059A Expired - Lifetime US3928943A (en) 1973-09-17 1974-09-11 Device for the feed of grinding tools to grinding machines

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US (1) US3928943A (enrdf_load_stackoverflow)
CH (1) CH569552A5 (enrdf_load_stackoverflow)
DE (1) DE2442385C3 (enrdf_load_stackoverflow)
GB (1) GB1485434A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483103A (en) * 1979-03-17 1984-11-20 Maag Gear-Wheel & Machine Company Limited Dressing apparatus for a dished grinding wheel at a tooth flank-grinding machine
US4530187A (en) * 1982-08-31 1985-07-23 Toyoda Koki Kabushiki Kaisha Dressing device for grinding wheels
US5163794A (en) * 1991-04-22 1992-11-17 Cincinnati Milacron Inc. Single plane articulated axis workslide
US20150183078A1 (en) * 2013-12-27 2015-07-02 United Technologies Corporation System and methods for rough grinding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117644447B (zh) * 2024-01-30 2024-04-12 江苏二马液压元件有限公司 一种小口径螺纹联接平衡阀生产用打磨装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573153A (en) * 1923-09-04 1926-02-16 Garrison Orlando Gear grinder
US2720063A (en) * 1953-05-29 1955-10-11 Norton Co Multiple wheel grinding machine
US2929172A (en) * 1956-07-16 1960-03-22 Norman Ind Inc Van Machine for cutting a succession of workpieces to a predetermined size
US2946162A (en) * 1958-05-19 1960-07-26 Norton Co Multiple wheel grinding machine
US3033187A (en) * 1961-03-13 1962-05-08 Norton Co Wheel wear sensing device and compensator
US3640024A (en) * 1969-04-10 1972-02-08 Lindner Gmbh Herbert Device for adjusting the position of a grinding wheel relative to a workpiece
US3815568A (en) * 1971-07-28 1974-06-11 Waldrich Werkzeugmasch Template controlled trueing device with an adjustable template follower

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573153A (en) * 1923-09-04 1926-02-16 Garrison Orlando Gear grinder
US2720063A (en) * 1953-05-29 1955-10-11 Norton Co Multiple wheel grinding machine
US2929172A (en) * 1956-07-16 1960-03-22 Norman Ind Inc Van Machine for cutting a succession of workpieces to a predetermined size
US2946162A (en) * 1958-05-19 1960-07-26 Norton Co Multiple wheel grinding machine
US3033187A (en) * 1961-03-13 1962-05-08 Norton Co Wheel wear sensing device and compensator
US3640024A (en) * 1969-04-10 1972-02-08 Lindner Gmbh Herbert Device for adjusting the position of a grinding wheel relative to a workpiece
US3815568A (en) * 1971-07-28 1974-06-11 Waldrich Werkzeugmasch Template controlled trueing device with an adjustable template follower

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483103A (en) * 1979-03-17 1984-11-20 Maag Gear-Wheel & Machine Company Limited Dressing apparatus for a dished grinding wheel at a tooth flank-grinding machine
US4530187A (en) * 1982-08-31 1985-07-23 Toyoda Koki Kabushiki Kaisha Dressing device for grinding wheels
US5163794A (en) * 1991-04-22 1992-11-17 Cincinnati Milacron Inc. Single plane articulated axis workslide
US20150183078A1 (en) * 2013-12-27 2015-07-02 United Technologies Corporation System and methods for rough grinding
US9498865B2 (en) * 2013-12-27 2016-11-22 United Technologies Corporation System and methods for rough grinding

Also Published As

Publication number Publication date
CH569552A5 (enrdf_load_stackoverflow) 1975-11-28
GB1485434A (en) 1977-09-14
DE2442385C3 (de) 1979-01-18
DE2442385B2 (de) 1978-05-03
DE2442385A1 (de) 1975-03-27

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