US3752143A - Apparatus for shaping a grinding wheel - Google Patents

Apparatus for shaping a grinding wheel Download PDF

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Publication number
US3752143A
US3752143A US00132439A US3752143DA US3752143A US 3752143 A US3752143 A US 3752143A US 00132439 A US00132439 A US 00132439A US 3752143D A US3752143D A US 3752143DA US 3752143 A US3752143 A US 3752143A
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United States
Prior art keywords
axis
arm
diamond
holder
diamond point
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
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US00132439A
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English (en)
Inventor
P Trochet
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Individual
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Individual
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Publication date
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Publication of US3752143A publication Critical patent/US3752143A/en
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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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces

Definitions

  • the probe is adapted to be brought into position along the axis of the path of travel of the diamond point.
  • the latter is removed from the holder and a measuring rod having a spherical end portion of predetermined diameter is substituted in its place.
  • the coincidence of the center of the spherical portion along the working axis is checked on the dial of the comparator.
  • the holder for the diamond point then put back in the arm and brought into position in contact with the probe a particular value on the dial of the comparator indicates that the diamond point is on the working axis.
  • the present invention relates to a device for adjusting the position of the diamond point of an apparatus for shaping a grinding-wheel in which the holder for the diamond point is slidably mounted in an arm along an axis, the arm itself being rotatably mounted about a working axis.
  • a frusto-conical seating along the working axis of the device, adapted to receive a frusto-conical spindle matingly engageable with the seating and having at its lower end portion a cylindrical rod against which the diamond point abuts in the course of sliding movement of the diamond holder for positioning the diamond point.
  • the device according to the present invention overcomes these disadvantages.
  • a comparator means is retractably mounted on the apparatus so that the probe of the comparator means can be brought in position along the axis along which slides the diamond holder, means being provided for checking on the comparator means the coincidence of the tip of the probe thereof with the intersection of said sliding axis and the working axis.
  • FIG. 1 is a schematic view in perspective of an apparatus for shaping a grinding-wheel adapted to be provided with the device according to the invention
  • FIG. 2 is a view partly in section of a portion of an apparatus provided with the device according to the invention
  • FIG. 3 is a view similar to that of FIG. 2 but more inclusive showing another operating condition
  • FIG. 4 is a view of the top surface of a portion of an apparatus provided with the device according to the invention.
  • FIG. 5 is an elevation view relative to another embodiment
  • FIG. 6 is a view corresponding to FIG. 5 but at 90 therefrom
  • FIG. 7 is a view taken along the line 77 in FIG. 6.
  • a cylindrical bore 11 provided in an arm is adapted to maintain a device 12 (FIGS. 1 and 2) comprising a holder 13 for a diamond point in such a manner that the point 14 of the diamond 15 is able to be displaced along the axis 16 of the bore 11 in both directions along the path of travel accurately determined and marked on a scale 70.
  • the arm 10 is supported by an arrangement rotatably mounted about a working axis 17 by a platen 9 which is integrally fixed to a connecting member 8 of a device 7 adapted to be displaced along two perpendicular axes by adjusting actuating members 71 and 72 of two carriages 73 and 74 respectively.
  • the axis '16 intersects the axis 17 and is perpendicular thereto.
  • An eye 62 integrally fixed to a rod 21 is rotatably mounted about an axis 23 perpendicular to and against an oblique surface 61 on the connecting member 8.
  • the eye 62 has a plane surface 63 in contact with the surface 61 owing to the action of a spring 65 seated in a recess 64 in the eye 62 and supported against the head 22 of a rod having an axis 23.
  • the end of the rod 21 opposite the eye 62 is received in a sleeve 24 having a longitudinal slot 25 opening onto the upper side 26 with means for tightening 27 and 28, shown schematically, in order to permit the orientation of the sleeve 24 about the axis 29 common to the sleeve and to the rod 21 and to secure it in a desired position.
  • a bracket 31 having a square cross-section is mounted at the lower end of said sleeve 24 and has at one of its ends a pivot pin fixed thereto.
  • the axis 32 of the pivot pin is perpendicular to axes 17 and 29 which are parallel to each other as well as to axis 16.
  • An arm 33 is pivotingly mounted about the axis 32 the arm 33 being integrally fixed to the bracket 31 by means shown schematically at 34.
  • the arm 33 supports a comparator 35 having an operating member or probe 36 with a tip 37 extending towards the axis 17
  • a comparator 35 having an operating member or probe 36 with a tip 37 extending towards the axis 17
  • the device 12 of the arm 10 is removed, if necessary, and replaced by a measuring rod 41 having a cylindrical body 42 cooperating with the bore 11 followed by a portion of reduced section 43 and then a spherical portion 44 having a predetermined radius.
  • the measuring rod 41 is moved to a position in which the center 46 of the spherical portion 44 is on the axis 17 by adjusting the means for sliding said measuring rod in the bore 1 1 along axis 16.
  • the position of the center 46 of the spherical portion 44 on the axis 17 is checked by turning the arm 10 about the axis 17 while assuring that the reading on the dial 47 of the comparator 35 is unchanged.
  • the measuring rod 41 is then removed.
  • the comparator which is adjusted in order that its reading during adjustment is equal to the radius of the sphere of the portion 44, the probe 36 is allowed to extend slightly beyond the axis 17.
  • the support 12 of the holder 13 for the diamond point is put in position and its control means is adjusted until the diamond point 14 pushes the probe 36 back slightly for returning the reading on the dial 47 of the comparator 35 to zero.
  • the diamond point 14 is then exactly on the axis 17 (FIG. 2).
  • the comparator device 45 is retracted by pivoting it about the axis 23.
  • the shaping of a grinding-wheel M for a machine-tool may then begin.
  • the device enables at any moment the determination of the amount of wear of the diamond; it is simply necessary to re-position the comparator 45 and to re-use the probe thereof in order to measure the wear and take whatever remedy is necessary.
  • the arm 51 adapted to support the holder for the diamond point by its bore52' is s'lidably mounted in a slotted sleeve or collar 53 with tightening means 54 and 55 so that it is possible to vary the distance between the axis 56 of the bore 52 and the dove-tail 58 provided for the sliding of the carriage 59 carrying the collar 53.
  • the arm 51 is also able to be pivoted about its axis common with the collar 53 in order to obtain the perfect perpendicularity of the axis 56 of the bore 52 and the axis 17.
  • an apparatus for the dressing of a grinding wheel comprising a sleeve support for a diamond-holder, said support being rotatably mounted around an axis and being slidable along two perpendicular directions, with means for marking and controlling the rotational displacement around said axis and the movement along said two directions, the improvement comprising: one arm of adjustable length pivotingly mounted on said support around an axis perpendicular to said axis of rotation, a comparator secured at one end of a bracket a branch of which is slidably mounted at the end of said arm opposed to the one attached to the support, and
  • said arm comprises a cylindrical part on which is slidably mounted a bushing, said means for adjusting the length of said arm comprising members for securing said bushing on said cylindrical part.

Landscapes

  • 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)
US00132439A 1970-10-28 1971-04-08 Apparatus for shaping a grinding wheel Expired - Lifetime US3752143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7038864A FR2108989B1 (ref) 1970-10-28 1970-10-28

Publications (1)

Publication Number Publication Date
US3752143A true US3752143A (en) 1973-08-14

Family

ID=9063397

Family Applications (1)

Application Number Title Priority Date Filing Date
US00132439A Expired - Lifetime US3752143A (en) 1970-10-28 1971-04-08 Apparatus for shaping a grinding wheel

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Country Link
US (1) US3752143A (ref)
FR (1) FR2108989B1 (ref)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228781A (en) * 1979-02-09 1980-10-21 Barber-Colman Company Tramming fixture for positioning a dressing wheel
US4262456A (en) * 1979-02-09 1981-04-21 Barber-Colman Company Method for positioning a dressing wheel
RU2183547C2 (ru) * 1999-10-21 2002-06-20 Открытое акционерное общество "Подольский машиностроительный завод" Устройство для правки фасонного алмазного шлифовального круга и способ подготовки устройства к проведению измерения рельефа профиля рабочей поверхности (варианты)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228781A (en) * 1979-02-09 1980-10-21 Barber-Colman Company Tramming fixture for positioning a dressing wheel
US4262456A (en) * 1979-02-09 1981-04-21 Barber-Colman Company Method for positioning a dressing wheel
RU2183547C2 (ru) * 1999-10-21 2002-06-20 Открытое акционерное общество "Подольский машиностроительный завод" Устройство для правки фасонного алмазного шлифовального круга и способ подготовки устройства к проведению измерения рельефа профиля рабочей поверхности (варианты)

Also Published As

Publication number Publication date
FR2108989A1 (ref) 1972-05-26
DE2129216B2 (de) 1976-06-10
DE2129216A1 (de) 1972-05-04
FR2108989B1 (ref) 1977-01-21

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