EP1693150A1 - Vorrichtung zum Hinterschleifen für axiale und radiale Bearbeitung - Google Patents

Vorrichtung zum Hinterschleifen für axiale und radiale Bearbeitung Download PDF

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Publication number
EP1693150A1
EP1693150A1 EP06300146A EP06300146A EP1693150A1 EP 1693150 A1 EP1693150 A1 EP 1693150A1 EP 06300146 A EP06300146 A EP 06300146A EP 06300146 A EP06300146 A EP 06300146A EP 1693150 A1 EP1693150 A1 EP 1693150A1
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EP
European Patent Office
Prior art keywords
radial
axial
cam
tool
carriage
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Withdrawn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
EP06300146A
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English (en)
French (fr)
Inventor
Richard Halter
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.)
HALTER OUTILS DE COUPE
Original Assignee
HALTER OUTILS DE COUPE
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 HALTER OUTILS DE COUPE filed Critical HALTER OUTILS DE COUPE
Publication of EP1693150A1 publication Critical patent/EP1693150A1/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Withdrawn legal-status Critical Current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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/247—Supports for drills

Definitions

  • the present invention relates to the field of machines for the manufacture and sharpening of tools, in particular cutting tools made in small series or individually, and relates to a machine for balancing for axial and radial machining.
  • the cutting tools of the forest or reamer type are generally made from a bar made of steel or tungsten carbide, by cutting to the length and subsequent machining of their cutting faces and their profile.
  • a machining of stepped tools that is to say having cutting surfaces of different diameters, these surfaces being connected to each other by means of chamfers or cutting profiles, can not be achieved with precision and in a perfectly reproducible manner, the necessary adjustments to be made empirically.
  • the object of the present invention is to overcome these disadvantages by proposing a machine for offsetting for axial and radial machining which makes it possible to produce tools of complex shape, such as stepped tools, by making the tool simultaneously perform three movements, namely radial, axial and rotary.
  • the lapping machine which essentially consists of a mounting base on a sharpening machine, a support body and guide a receiving pin of a tool to be machined and by a carriage for mounting and guiding the body on the mounting base, is characterized in that the receiving pin of a tool to be machined cooperates with a means of axial and radial displacement of the support and guide body of said pin of receiving a tool to be machined.
  • FIGS 1, 3 and 4 of the accompanying drawings show a machine for offsetting, which consists essentially of a base 1 for mounting on a sharpening machine (not shown), a body 2 for supporting and guiding a pin 3 receiving a tool to be machined and a carriage 4 for mounting and guiding the body 2 on the mounting base 1.
  • the pin 3 for receiving a tool to be machined cooperates with a means 5 for axial and radial displacement of the body 2 for supporting and guiding said pin 3 for receiving a tool to be machined.
  • the base 1 for mounting on a sharpening machine is constituted, in known manner, by a base 6 provided with mounting and positioning means 6 'intended to cooperate with positioning bolts and threaded rods of the table of said machine. sharpening, and by a cylindrical pin 7 intended to cooperate with the carriage 4 for mounting and guiding the body 2.
  • This carriage 4 consists of two essential elements, namely, on the one hand, a lower part or base 8 provided on its underside, a bore 8 'cooperating with the pin 7 of the base 1 and on its upper face of a recess 8 "offset longitudinally relative to the bore 8' and, secondly, an upper part 9 slidably mounted on the lower part or base 8 by means of two guide rails 10 and provided with a bore 9 '
  • the cooperation between the post 7 of the base 1 and the bore 8 'of the lower part or base 8 of the carriage 4 allows to provide a pivot connection between the base 1 and the carriage 4 and a clamping screw or the like 7 ', passing through the lower part or base 8 of the carriage 4 and resting on the pin 7, ensures the maintenance in position of said carriage 4 after orientation adjustment.
  • the upper portion 9 of the carriage 4 is provided with a means 4 'of clamping said upper portion 9 on the lower portion 8, such as a set screw or the like. Such a means 4 'allows locking in position of the upper part 9 on the lower part 8.
  • the body 2 for supporting and guiding a pin 3 for receiving a tool to be machined is mounted on the carriage 4 and houses said pin 3 along its longitudinal axis, via a sleeve 11 guided in said body. 2 by means of ball bearings or the like.
  • the mounting of the spindle 3 in the sheath 11 takes place, in known manner, by means of stops and needle cages or the like, allowing it to rotate freely in said sheath 11 and independently thereof.
  • This pin 3 is further provided at its front end with a cone 12 for receiving any type of tool chuck and comprises at its rear part an interchangeable divider disk 13 for indexing the pin 3 in angular positions. defined, the pin 3 being provided with a crank 14 or similar device for the maneuver easily and accurately.
  • the sheath 11 is provided, at its rear end, with a drum 23 composed of a stack of disks 23 ', 23 "and 23"' having two movable clearance stops 24 and an indexing finger 25 or the like provided with an operating pin 25 'protruding through a corresponding guide provided between two discs 23 "and 23"', said indexing finger 25 or the like cooperating with the interchangeable divider disk 13, whose position is marked by the intermediate of a positioning cursor, not shown.
  • the means 5 for axial and radial displacement of the body 2 for supporting and guiding the pin 3 for receiving a tool to be machined consists essentially of a stepped cylindrical assembly and guide sleeve 15 cooperating with its smaller diameter. 15 ', with the bore 9' of the upper part 9 of the carriage 4 and forming a concentric guide for a transfer axis 16, opening respectively, at its upper end, in the body 2 of support and guide pin 3 receiving a tool to be machined and at its lower end in the recess 8 "of the lower part or base 8 of said carriage 4 and cooperating, at its upper end with the sleeve 11 and at its lower end with a stop 17 provided in the upper face of the lower portion 8 of the carriage 4 ( Figures 1 to 3
  • the transfer shaft 16 is mounted in the cylindrical assembly and guide sleeve 15 by means of stops and needle bearings or the like, enabling said shaft 16 to rotate freely in the sleeve 15.
  • the cooperation between the upper end of the transfer shaft 16 and the sheath 11 is formed by means of conical pinions 16 'and 11' which are identical and integral with the said upper end of the transfer shaft 16 and the sheath. 11 of the pin 3.
  • the cooperation between the lower end of the transfer pin 16 and the stop 17 provided on the upper face of the lower portion 8 of the carriage 4 is effected by means of a cam 18, mounted on said end of the axis 16 and abutting against the stop 17, which is advantageously in the form of a fixed or rotary stop, such as a ball bearing or the like mounted on a vertical axis in the upper face of the lower part 8, beside the recess 8 "of the carriage 4.
  • the cam 18 is an interchangeable cam mounted on the corresponding end of the transfer shaft 16 via a screw and a key or a similar device, so that the die placement conferred by said cam 18 is adjustable very precisely.
  • the upper part 9 of the carriage 4 is mounted on the lower part or base 8 with a preload along its longitudinal axis, tending to move it on the two guide rails 10 in the direction of a application of the cam 18 of the means 5 for axial and radial displacement of the body 2 for supporting and guiding the pin 3 for receiving a tool to be machined against the stop 17 provided on the upper face of the lower part 8 of the carriage 4
  • This prestress is provided by at least one compression spring, preferably two compression springs 19, bearing against the lower part 8 of the carriage 4 and against a wall 19 'of a housing delimited in the lower face of the part 9 of the carriage 4, on the opposite side to the recess 8 "Thus, the springs 19 will tend to move the upper part 9 of the carriage 4, together with the means 5, towards the side of the inferior part 8 opposite the said springs, so that the cam 18 is always perfectly in contact with the abutment 17.
  • the cylindrical assembly and guide sleeve 15 furthermore cooperates with an annular portion 15 "with a bore 2 'for positioning and assembling the body 2, provided on the face lower of the latter and allowing the passage of the bevel gear 16 'of the transfer pin 16.
  • the cylindrical assembly and guide sleeve 15 is connected, by screws 20, passing through an annular disk 21 extending between its annular portion 15 "and its smallest diameter 15 ', to the body 2 and is provided, on its plus small diameter 15'cooperating with the bore 9 'of the upper portion 9 of the carriage 4, an annular groove 22, the distal wall of the annular disc 21 has an outward inclination and is intended to cooperate with radial clamping screws 28 screwed into the upper part 9 of the carriage 4.
  • the body 2 is mounted on the carriage 4 in an angularly adjustable manner, by means of the radial clamping screws 28 cooperating with the annular groove 22 and can be moved, together with said carriage 4, longitudinally on the base 1 for mounting on a sharpening machine, because of the connection with said carriage 4 via the cylindrical assembly and guide sleeve 15.
  • the body 2 for supporting and guiding a pin 3 for receiving a tool to be machined may also be provided with a support 27 for mounting measurement and control means, this support 27 making perpendicular displacements in a horizontal plane and being adjustable in position on the body 2.
  • the support 27 is essentially constituted by a base 27 ' fastening to the body 2 by means of screws or the like, by a support body 27 "mounted with sliding guide on the base 27 'and by a fixing element 27"' or measurement and control means, guided perpendicularly to the base 27 'in the support body 27 ".
  • the base 27 ' is provided with oblong holes for passing the clamping screws, extending perpendicularly to the longitudinal axis of said base 27', these oblong holes being able to be combined with lugs provided on the lower face of the base 27 'and cooperating with corresponding oblong holes provided on the body 2.
  • the base 27' of the support 27 can be adjusted angularly with a limited movement on the body 2.
  • the measurement and control means mounted on the support 27 may be a profile projector 50, a measuring microscope or any other metrology device delivering a digital measurement on a display 51 (FIG. 4).
  • the guide between the base 27 'and the support body 27 “and between the support body 27” and the element 27 "' for fixing the measuring or control means is of the tenon type and straight mortise or dovetail.
  • the sleeve 11 When the operator actuates the drum 23, the sleeve 11 is rotated and drives, via the bevel gears 11 'and 16', the transfer axis 16 of the means 5 for axial and radial displacement of the support body 2 and guiding the pin 3 for receiving a tool to be machined. Because the pinions 11 'and 16' are identical, that is to say that they have a rotational ratio of 1/1, the angle of rotation of the sheath 11 is identical to that of the axis of rotation. transfer 16 and thus the cam 18 that carries it.
  • the tool to be machined mounted in the toolholder mandrel provided in the receiving cone 12 of the pin 3 guided in the sleeve 11, is locked in position by means of the divider disk 13 cooperating with the indexing finger 25 movable through the actuating pin 25 '. It follows that the tool to be machined follows the movement of the drum 23 and the carriage 4.
  • the movable stops 24 provided on the drum 23 are set at an angle corresponding to this movement.
  • the length of the stage is adjusted, for example by means of a profile projector 50 and a metrology device delivering a digital measurement on a display 51, mounted on the support 27 fixed on the body 2.
  • the drum 23 is then rotated to the movable stop 24, so that the tool rotates on itself and advances proportionally, which generates an axial curvature.
  • the second tooth can be sharpened.
  • the spindle 3 is then indexed by an angle corresponding to the angular spacing between teeth and the aforementioned machining and control operations are repeated.
  • the choice and the assembly of the cam are carried out as indicated above and the carriage 4 is positioned perpendicularly to the axis of the tool, the body 2 being perpendicular to the carriage 4.
  • the cam 18 then generates a displacement perpendicular to the axis of the reamer for the achievement of a body radial.
  • the machining and control operations are similar to those described above.
  • Combined axial and radial relief for example for sharpening the passage angle of a curvilinear clearance stage with stitching is performed, after selection and mounting of the cam as indicated above, by positioning the mandrel of inclining the carriage 4 according to a defined radial angle and inclination of the body 2 at the same angle, but in the opposite direction, so that the tool to be machined remains parallel to the base 1.
  • the displacement generated by the cam 18 is carried out simultaneously along two axes, namely axial and radial, so that the tool to be machined moves obliquely relative to the table of the support machine of the machine to be cut according to the invention.
  • the machining and control operations are similar to those described above.
  • the cam 18 is the main element of the machine according to the invention, because, by its angular displacement, it determines the movement of the tool to be machined.
  • the "radial angle" and the ⁇ cam can be deduced from the desired axial and radial clearance, as well as the diameter ⁇ of the tool to be machined.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP06300146A 2005-02-18 2006-02-16 Vorrichtung zum Hinterschleifen für axiale und radiale Bearbeitung Withdrawn EP1693150A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0501692A FR2882285B1 (fr) 2005-02-18 2005-02-18 Machine a detalonner pour usinage axial et radial

Publications (1)

Publication Number Publication Date
EP1693150A1 true EP1693150A1 (de) 2006-08-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06300146A Withdrawn EP1693150A1 (de) 2005-02-18 2006-02-16 Vorrichtung zum Hinterschleifen für axiale und radiale Bearbeitung

Country Status (2)

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EP (1) EP1693150A1 (de)
FR (1) FR2882285B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110815091A (zh) * 2019-12-04 2020-02-21 天津七一二通信广播股份有限公司 一种应用于手动圆周角度定位的机械装置及使用方法
CN115156862A (zh) * 2022-07-08 2022-10-11 宁夏西北骏马电机制造股份有限公司 提升电机空心轴同轴度的工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656264A (en) * 1970-04-24 1972-04-18 Radial Lip Machine Inc Method of grinding drills
US3680263A (en) * 1970-06-03 1972-08-01 Huffman S E Corp Method and apparatus for grinding end cutting tools
US5649853A (en) * 1996-07-23 1997-07-22 Kuo; Chun-Lin Drill bit grinding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656264A (en) * 1970-04-24 1972-04-18 Radial Lip Machine Inc Method of grinding drills
US3680263A (en) * 1970-06-03 1972-08-01 Huffman S E Corp Method and apparatus for grinding end cutting tools
US5649853A (en) * 1996-07-23 1997-07-22 Kuo; Chun-Lin Drill bit grinding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110815091A (zh) * 2019-12-04 2020-02-21 天津七一二通信广播股份有限公司 一种应用于手动圆周角度定位的机械装置及使用方法
CN115156862A (zh) * 2022-07-08 2022-10-11 宁夏西北骏马电机制造股份有限公司 提升电机空心轴同轴度的工艺
CN115156862B (zh) * 2022-07-08 2023-12-08 宁夏西北骏马电机制造股份有限公司 提升电机空心轴同轴度的工艺

Also Published As

Publication number Publication date
FR2882285B1 (fr) 2008-10-03
FR2882285A1 (fr) 2006-08-25

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