US2950578A - Grinding machine with tool dressing means - Google Patents

Grinding machine with tool dressing means Download PDF

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Publication number
US2950578A
US2950578A US703696A US70369657A US2950578A US 2950578 A US2950578 A US 2950578A US 703696 A US703696 A US 703696A US 70369657 A US70369657 A US 70369657A US 2950578 A US2950578 A US 2950578A
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United States
Prior art keywords
shaft
grinding tool
tool
motion
grinding
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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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US703696A
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English (en)
Inventor
Fouquet Eugene
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Individual
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Individual
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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
    • 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
    • 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
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • Figures 1a and 1b, placed side by side, represent a plan view, part sectional, of the machine according to the invention
  • Figure 3 is a part sectional back elevation of the-machine, the back wall of the casing being removed;
  • Figure 4 is a part lateral view of the grinding tool, the object subjected to the machining process -and -the spouts supplying lubricant fluid;
  • the choppingor dressing tool provided adjacent the grinding tool in the present example, consists of a percussion element 41 fitted in a cylindrical head' 42 secured on the end of a rod 43, said head being slidably mounted within the front side bore of a cylindrical body 44 enclosing a compression ping tool thus formed is fixed on a carriage 50, which is in turn supported and guided by a slideway 51 paralleling the axis of rotation of the grinding tool, said slideway being fixed on a carriage 52, which is again supported and guided by parallel slide bars extending lengthwise.
  • Said carriage 52 comprises a nut 55 having a threaded hole extending lengthwise with respect to the machine.
  • the drive and clutch means of the shaft 57 are identically equal to those of the shaft 23.
  • a pinion 24' mounted on the smooth 'portion'of said shaft 57 and laterally provided with a wide coaxial conical bore, an axially movable clutch” part being slidably mounted on the grooved portion of said shaft 57, said clutch part having on one side of a conical boss directed towards the conical bore of said pinion, and on the other side a peripheral groove cooperating with the prongs 2627' of a fork memberwheel (not shown).
  • the pinion 24' is in permanent gear with another endless screw portion 67 of the afore Said screw spindle 56 constitutes, in a in detail hereinafter in the description of the operation of the machine.
  • an arcuate strip 96 Surrounding said ratchet wheel 85 on part of its periphery there is provided an arcuate strip 96 concentrically disposed, and having an arcuate rack portion secured to one of its ends, said rack gearing with the teeth ofa pinion 98, which is mounted on a shaft 99 provided with a handle 100.
  • the latter carries a stud 101 capable of axial displacement so as to be engageable in one of a series of holes 102 provided in an arcuate strip 103, which is mounted concentrically with said shaft 99.
  • the object to be processed may be clamped in position in the way as usual for mechanical operations such as turning and the like. It may for instance be fixed between a chuck 109 and a back center 104.
  • the grinding tool 1 duly secured on the shaft 7 is continuously rotated at high speed and in the appropriate direction, via the pulley 16, the belt 15 and the pulley 14 fixed on said shaft 7, by the electromotor 17.
  • Said grinding tool 11 operates on said object P so that metal is removed from said object at high speed and in large quantities in the form of relatively long and very narrow shavings.
  • the chopping tool represented diagrammatically as a pointed percussion element 41 of great hardness, is engaged in a reciprocating motion according to a generating line of said grinding tool 1. This reciprocating movement is obtained by alternately admitting and letting off a pressure fluid through the one and the other of the conduits 80-81 debouching into either end of the cylinder 79.
  • the shaft 57 is automatically given a rotational movement in exact accordance with the gradual reduction of the diameter of the grinding tool 1.
  • the direction of rotation of said shaft 57 is such as to cause the carriage 52, which carries the entire mechanism responsible for the movements of the chopper, to move towards the grinding tool at a rate corresponding to the reduction of the diameter of the latter.
  • the lubricant delivery spouts 7071 be gradually shifted in accordance with the reduction of the diameter of the grinding tool 1, but in this case the movement, though quantitatively equal to that of the chopper, must proceed in the opposite sense in order that projection of lubricant fluid onto the zone of contact between the object to be processed and the grinding tool be continuously ensured.
  • This motion of the spouts 70-71 is produced by the rotation of the threaded portion 58 of the shaft 57.
  • the reverse translational movement of the spouts 7071 with respect to the axial feed motion of the chopper of the grinding tool is due to the fact, that the portion 58 is threaded in the opposite sense with respect to the threading of the portion 56.
  • Said shafts 23 and 57 may also without difliculty be rotated independently of each other, by manual means.
  • it suflices to throw the lever 29 in order to disengage the conical boss of the clutch part 25 from the conical bore of the pinion 24.
  • instant decoupling of the shaft 23 is obtained, the latter thus becoming independent of the driving spindle 37 and all elements coupled therewith.
  • the threaded portion 22 may be rotated manually, whereby the slide 18 as well as all devices mounted thereon, may be shifted forward or backward at will.
  • each of the holes 102 might e.g. be made to correspond with a tooth of the ratchet wheel 85 in such a way, that if said lever is successively brought into alignment with holes numbered 1, 2, 3, 4, 5, etc., this would cause one, two, three, four, five, etc. teeth of the ratchet wheel to be uncovered.
  • the oscillating angular movement of the rocker 86 being determined by the constant amplitude rectilinear reciprocating motion of the piston 91 within the cylinder 92, said oscillating angular movement of the rocker 86 is also constant, so that this simple arrangement provides for preset control of rotational motion of the common drive shaft 37, consequently of the synchronized feed motions of the slide 18, the chop ping tool and the lubricant delivery spouts of the grinding tool.
  • the admission and control of the pressure fluid flowing alternately through the conduits 9495 into cylinder 92, as well as of the pressure fluid flowing alternately through the conduits 9495 into the cylinder 79 which controls the movement of the carriage supporting the chopper, may be elfectuated by any known means.
  • a grinding machine comprising a grinding tool containing abrasive grains, supporting means for said grinding tool, means for imparting rotational motion to said grinding tool, means for imparting longitudinal feed motion'to said supporting means of said grinding tool, dressing means adapted to cleave abrasive grains apparent on the surface of said grinding tool, supporting means for said dressing means, means imparting a longitudinal feed motion to said dressing means, lubricant 'delivery means adapted to project lubricant fluid onto the contact points between the object to be ground and said grinding tool, lubricant delivery means adapted to project lubricant fluid onto the contact points between said grinding tool and said dressing means,'supporting means for said first lubricant delivery means, supporting means for said second lubricant delivery means,.a shaft extending parallel to the longitudinal axis of said machine, said shaft having a first threaded portion, a second threaded portion, a smooth portion and an end portion formed with longitudinal grooves, said first and said second threaded portions having equal but opposite pitch, said supporting
  • a grinding machine comprising a grinding tool containing abrasive grains, supporting means for said grinding tool, means for imparting rotational motion to said grinding tool, a first sliding support carrying said supporting means and said rotation imparting means of said grinding tool, dressing means adapted to cleave abrasive grains apparent on the surface of said grinding tool, supporting means for said dressing means, a second sliding support carrying said supporting means for said dressing means, lubricant delivery means adapted to project lubricant fluid onto the contact points between the object to be ground and said grinding tool, lubricant delivery means adapted to project lubricant fluid onto the contact points between said grinding tool and said dressing means, supporting means for said first lubricant delivery means, supporting means for said second lubricant delivery means; a first shaft extending parallel to the longitudinal axis of said machine, said shaft having a threaded end portion, a smooth intermediate portion and a longitudinally grooved end portion, said first sliding support having a nut engaged with said threaded end portion of said first shaft, a first friction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US703696A 1956-12-28 1957-12-18 Grinding machine with tool dressing means Expired - Lifetime US2950578A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR847855X 1956-12-28
FR2950578X 1956-12-28

Publications (1)

Publication Number Publication Date
US2950578A true US2950578A (en) 1960-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US703696A Expired - Lifetime US2950578A (en) 1956-12-28 1957-12-18 Grinding machine with tool dressing means

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US (1) US2950578A (fr)
LU (1) LU35594A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023645A (en) * 1957-05-22 1962-03-06 Capewell Mfg Company Apparatus for producing saw blades
US3978625A (en) * 1975-02-18 1976-09-07 Teer, Wickwire & Company Grinding wheel coolant nozzle
FR2752182A1 (fr) * 1996-08-07 1998-02-13 Snecma Buse d'arrosage et de decrassage pour meule de rectification

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765890A (en) * 1927-05-11 1930-06-24 Vates Adolf Device for supplying water to stone saws
US2194422A (en) * 1938-09-20 1940-03-19 Norton Co Grinding wheel truing apparatus
US2310977A (en) * 1940-08-03 1943-02-16 Ex Cell O Corp Machine tool
US2720062A (en) * 1948-05-14 1955-10-11 Fouquet Eugene Grinding machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1765890A (en) * 1927-05-11 1930-06-24 Vates Adolf Device for supplying water to stone saws
US2194422A (en) * 1938-09-20 1940-03-19 Norton Co Grinding wheel truing apparatus
US2310977A (en) * 1940-08-03 1943-02-16 Ex Cell O Corp Machine tool
US2720062A (en) * 1948-05-14 1955-10-11 Fouquet Eugene Grinding machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023645A (en) * 1957-05-22 1962-03-06 Capewell Mfg Company Apparatus for producing saw blades
US3978625A (en) * 1975-02-18 1976-09-07 Teer, Wickwire & Company Grinding wheel coolant nozzle
FR2752182A1 (fr) * 1996-08-07 1998-02-13 Snecma Buse d'arrosage et de decrassage pour meule de rectification

Also Published As

Publication number Publication date
LU35594A1 (fr)

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