EP0017271A1 - Dispositif pour la fixation des couteaux d'une machine à tailler les engrenages sur une machine à meuler - Google Patents

Dispositif pour la fixation des couteaux d'une machine à tailler les engrenages sur une machine à meuler Download PDF

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Publication number
EP0017271A1
EP0017271A1 EP80200191A EP80200191A EP0017271A1 EP 0017271 A1 EP0017271 A1 EP 0017271A1 EP 80200191 A EP80200191 A EP 80200191A EP 80200191 A EP80200191 A EP 80200191A EP 0017271 A1 EP0017271 A1 EP 0017271A1
Authority
EP
European Patent Office
Prior art keywords
cutter head
clamping device
axis
knife
pivot axis
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.)
Granted
Application number
EP80200191A
Other languages
German (de)
English (en)
Other versions
EP0017271B1 (fr
Inventor
Hans Jürg Spiess
Erich Kotthaus
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0017271A1 publication Critical patent/EP0017271A1/fr
Application granted granted Critical
Publication of EP0017271B1 publication Critical patent/EP0017271B1/fr
Expired 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills
    • 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
    • B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
    • B24B3/021—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of milling cutters with helical cutting edges

Definitions

  • the invention relates to a clamping device for clamping knives of a gear cutting machine when grinding on a grinding machine, the knives being inserted in a knife head and the knife head being rotatable about a knife head axis and being pivotable about a pivot axis.
  • Clamping devices of the type mentioned are used on grinding machines for fastening the cutter heads of gear cutting machines during the grinding of the knives inserted into the cutter heads.
  • a clamping device according to the preamble of claim 1 is known (German Patent No. 902 351), in which the cutter head can be rotated about a cutter head axis and can be pivoted about a horizontal pivot axis arranged at right angles to the cutter head axis. The cutter head can also be rotated about a further, vertically arranged axis of rotation.
  • This clamping device is also displaceable on all sides in a horizontal plane and is adjustable in height.
  • the clamping head To adjust the inclination of the knife before sharpening, the clamping head must first be rotated about its own axis, then swiveled around the swivel axis and the vertical axis of rotation. Subsequently The distance between the grinding wheel and the surface of the knife to be ground must be compensated by shifting in the plane and by adjusting the height. For this purpose, long distances must be provided in the grinding machine for moving the clamping device in the plane as well as in the height. This is associated with a correspondingly large space requirement.
  • This clamping device takes up a lot of free space in order to be able to bring the elements that support the cutter head into positions that allow the blades to be ground with the usual inclination angles of the corresponding free areas.
  • the lines of action of the forces that are transferred to the cutter head during grinding run far outside the support surfaces of the bearings of the various swiveling and adjustable elements. This requires a very stiff and heavy design of the bearings as well as the individual elements.
  • the invention solves the problem of creating a clamping device for clamping knives of a gear cutting machine on a grinding machine, which has a compact external dimension and for adjusting the inclination of the knives requires as small a movement space as possible which exceeds the external dimensions and which allows the inclination of the knives to be set with greater accuracy.
  • FIG. 1 shows a clamping device 1 with its five main elements: sliding table 2, lifting table 3, rotating part 4, swiveling part 5 and knife head carrier 6.
  • a knife head 7 with a knife 8 is arranged thereon. The remaining knives of the knife head 7 are not shown for the sake of simplicity .
  • a grinding wheel 9 can be seen, which is arranged on a grinding machine 10 (FIG. 6) so as to be movable in the vertical direction.
  • the cutter head 7 is connected to the cutter head carrier 6 without play via a cone 11. This is arranged on the pivoting part 5 so as to be rotatable about a cutter head axis 12.
  • the cutter head support 6 is supported on the swivel part 5 via a roller bearing 13.
  • a cylinder 14 arranged on the swivel part 5 is used in a manner which is not shown in more detail and is known per se to transmit pressure Cl from the swivel part 5 to the cutter head carrier 6.
  • the swivel part 5 is pivotally mounted on the swivel part 4 about a swivel axis 15, which in this example intersects the cutter head axis 12 at an acute angle c.
  • a cylinder 16 arranged on this serves also for the transmission of pressure oil.
  • the swivel part 5 is supported on the rotary part 4 via a bearing ring 17.
  • Pockets 20 (shown in dashed lines), which are inserted into the bearing ring 17 at the top and distributed over its entire circumference are connected to an oil supply in a manner not shown but known.
  • the bearing ring 17 with the pockets 20 thus forms a hydrostatic bearing 21 for the swiveling part 5.
  • a worm 74 which is mounted in the rotating part 4, meshes with the worm wheel 19. By rotating this worm 74, the swiveling part 5 can be swiveled on the rotating part 4 . Thanks to the self-friction of this worm gear 19, 74, the swivel part 5 cannot be rotated on the rotating part 4 when the worm 74 is at rest.
  • Another hydrostatic bearing 22 consists of pockets 23 (shown in broken lines), which are arranged in a ring and embedded in the lifting table 3. These pockets 23 are also connected to an oil supply in a manner not shown in detail. Accordingly, the rotating part 4 is arranged on the lifting table 3 such that it can be rotated about an axis of rotation 24, which is inclined at an acute angle E against the pivot axis 15, a cylinder 25 attached to the lifting table being used to transmit pressure oil to the rotating part 4. A plate spring 26 also pulls the rotating part 4 against the lifting table 3.
  • the lifting table 3 is arranged to be vertically movable on the sliding table 2.
  • a shaft 27 fastened to this serves as a guide and is in a bore 29 in the lifting table. 3 backlash-free slides.
  • Such guides 27, 29 are arranged on both sides of the rotary part 4.
  • the section through the clamping device 1 was placed in FIGS. 1 and 2 so that different construction features can be made visible on both sides.
  • Bearing blocks 31 are also arranged on both sides of the rotating part 4.
  • a shaft 33 is mounted in a bore 32 and is connected to a pivot lever 34.
  • a wheel 35 is mounted, which can roll on a surface 36 of the sliding table 2.
  • Two opposing wheels 35 or swivel levers 34 are connected to one another by a bracket 37.
  • This bracket 37 is connected via a piston rod 38 to a hydraulic cylinder 39, for example. This is connected to an oil supply in a manner not shown.
  • a spring 41 is arranged, which is biased. It is supported on the one hand on the cylinder 40 and on the other hand on a plate 42.
  • This is attached to one end of a rod 43 which is fastened at its other end to the swivel lever 34 via a bolt 44.
  • This device serves to balance the weight, so that less force has to be applied for the lifting movement and the shafts 27 have to absorb small radial forces.
  • FIG. 2 it can be seen that the pivot part 5 has been rotated by 180 about the pivot axis 15 in relation to its position in FIG. 1.
  • the cutter head axis 12 and thus the cutter head 7 are inclined by twice the angle between the cutter head axis 12 and the pivot axis 15 against the axis of rotation 24.
  • a cylinder 45 in which a piston 46 is arranged to be reciprocable.
  • This piston 46 consists of two parts, as can be seen in FIG. 4, namely an outer piston 47 and an inner piston 48. These are connected to one another by a thread 49.
  • a square rod 50 engages with the inner piston 48 at one end and is fixed at the other end in an adjusting ring 51. By turning the adjusting ring 51, the inner piston 48 can also be rotated via the square rod 50. As a result, the inner piston 48 and outer piston 47 are screwed against one another - or from one another - as a result of which the overall length of the piston 46 changes.
  • a toothed rack 52 is incorporated into the outer bulb 47 on one side.
  • a ring 54 is placed around the cutter head carrier 6. This has a groove 55 into which oil from an oil supply can be pumped in via lines (not shown here).
  • the ring 54 supports the spur gear 53 surrounding it from below. Sufficient play is provided between the spur gear 53 and the ring 54 so that the spur gear 53 can rotate freely. If the oil in the groove 55 is pressurized, a wall 56 of the ring 54 bends against the spur gear 53, which eliminates the play. In this case, the spur gear 53 is coupled to the cutter head carrier 6.
  • An actuating device 76 is shown in perspective and partially in section in FIG. 3.
  • a partial disk 57 fastened on the cutter head carrier 6, which is exchangeable and has a number of recesses 58 on its circumference.
  • a collar 59 is arranged concentrically.
  • a lever 61 is rotatably arranged about a pin 60, which carries an adjusting cam 62 at one end.
  • the shape of the recesses 58 is identical to the shape of the adjusting cam 62, so that they can mesh with one another without play.
  • a spring element 63 presses the actuating cam 62 into one of the recesses 58.
  • a piston 65 which engages at the other end of the lever 61 and is arranged in a cylinder 64, can, provided it is supplied with pressure oil via line 66, the lever 61 turn around the bolt 60 against the action of the spring element 63.
  • the adjusting cam 62 is removed from the relevant recess 58 and the cutter head carrier 6 and the adjusting ring 59 can be rotated relative to one another.
  • Setting ring 59, partial disk 57 and lever 61 can also be seen, for example, in FIG. 2. However, these elements are still covered by a cover 67 and protected against contamination.
  • FIG. 2 it can also be seen that the adjusting ring 59 is supported on the swivel part 5 via bearing surfaces 69.
  • the adjusting ring 59 also has a slightly conical toothing 68.
  • a bevel gear 70 which is fastened on a shaft 71, engages in this.
  • the shaft 71 is mounted, for example, by means of roller bearings 72 in the swivel part 5 and carries a handwheel 73 at its outer end. By turning this handwheel 73, the adjusting ring 59 on the swivel part 5 can thus be rotated about the cutter head axis 12.
  • FIG. 6 shows how the clamping device 1 is arranged on a grinding machine 10 with the grinding wheel 9.
  • a handwheel 77 By turning a handwheel 77, the sliding table 2 and thus the entire clamping device 1 can be moved in a known manner parallel to the plane of the grinding wheel 9 and perpendicularly to it with a handwheel 78.
  • FIG. 7 shows a further embodiment of the clamping device 1 according to the invention. This is only partially and from a different direction of view than shown in Fig. 1 or 2.
  • the viewing direction (for example, perpendicular to that in FIG. 1) is selected such that a projection 15 ′ of the pivot axis 15 appears here as a parallel to the cutter head axis 12.
  • the pivot axis 15 is in fact inclined to the plane of the drawing or the pivot axis 15 and cutter head axis 12 are skew to one another.
  • knives 8 whose tips or head surfaces 96 lie in the plane 95 shown in dashed lines.
  • the smallest distance a between the cutter head axis 12 and the actual pivot axis 15 is close to or in the area of the plane 95.
  • the knife head 7 In order to grind a chip or free surface of a knife 8, the knife head 7 is placed on the knife head carrier 6.
  • a screw not shown here, which is coaxial with the cutter head axis 12, is used to fasten the cutter head 7.
  • a radially arranged wedge which is also not shown here, is used for positioning, so that the cutter head 7 cannot be rotated relative to the cutter head carrier 6.
  • the graduated disk 57 must therefore have a number of recesses 58 which corresponds to the number of knife groups on the knife head 7. If this is not the case, the indexing disk 57 must be replaced before the cutter head 7 is put on. This is done by first lifting off the cover 67, the fastening elements for the graduated disk 57, which are not shown here solves and lifts them out. Correspondingly, one proceeds in the reverse order when inserting the new index plate 57. Attention must also be paid to the positioning means, not shown here, which only allow the partial disk 57 to be placed in a certain position relative to the cutter head carrier 6.
  • the piston 65 in the cylinder 64 is acted upon by the pressure oil.
  • the lever 61 is thereby tilted about the bolt 60 such that the actuating cam 62 cannot engage in the recesses 58 against the action of the spring element 63.
  • the adjusting ring 59 and cutter head carrier 6 are rotated relative to one another until the adjusting cam 62 is opposite a recess 58. Then the oil pressure in the cylinder 64 is reduced again and the actuating cam 62 goes into the recess 58 under the pressure of the spring element 63.
  • the hydrostatic bearing 21 To adjust the inclination of the cutter head 7, the hydrostatic bearing 21 must be supplied with pressure oil. The pressurized oil in the pockets 20 lifts the swivel part 5 slightly against the action of the plate spring 18 from the bearing ring 17. Otherwise, the pivot part 5 is hardly rotatable.
  • the worm 74 By rotating the worm 74 via a handwheel (not shown here), the swivel part 5 is swiveled about the swivel axis 15 until a mark (not shown here) on the swivel part_5 on a scale ring 75 indicates the desired inclination of the cutter head 7.
  • the oil pressure in the hydrostatic bearing 21 is then reduced again, so that the rotating part 4 and pivoting part 5 remain in this position relative to one another.
  • the cutter head 7 is rotated further about the cutter head axis 12 until a further position 79, described later with reference to FIG. 5, is reached.
  • FIG. 5 shows the outline of the cutter head 7 viewed from above. In its horizontal position according to FIG. 1, it appears as a circle 80.
  • the cutter head axis 12 lies in the center of the circle 80 and appears here as a point, since it is perpendicular to the plane of the circle 80.
  • the swivel axis.15 shown in short dash-dotted lines is assumed to be of finite length here. It thus extends from the center of the circle 80 to a point 81 and is inclined by the angle (see FIGS. 1, 2). 5 we see their projection onto the plane of the circle 80.
  • the point 81 forms the center of an ellipse 82, which is only shown half here.
  • the cutter head axis 12 and the pivot axis 15 intersect on a cutter head surface 88.
  • Knife head axis 12 and pivot axis 15 each form a plane which rotates about the pivot axis 15 when the knife head axis 12 is pivoted.
  • Cutter head axis 12 in its position inclined by ⁇ 30 ° relative to its original vertical position as a projection 84.
  • the main axes 85, 86 of the outline of the cutter head 7 appearing as an ellipse 87 are thus given.
  • main axes 85, 86 are oriented differently in space depending on the angle of inclination oe.
  • a fold 88 '(shown in rough dashed lines) about the main axis 85 reveals the inclination of the cutter head surface 88.
  • point 101 on the base line 90 which belongs to both the surface 89 and the cutter head surface 88 and try to find out its new position after the pivoting.
  • point 101 is also in a common plane with the cutter head axis 12. This common plane intersects the cutter head surface 88 in one Straight line 97. This common plane also intersects the plane of the ellipse 82 in a straight line 97 '.
  • the cutter head axis 12 appears as a projection 84 on the plane of the circle 80. The cutter head axis 12 now intersects the plane of the ellipse 82 at point 83 and the straight line 97 'appears as a straight line 100.
  • the straight line 100' which is nothing other than the swiveled straight line 97, also contains the swiveled point 101, now labeled 101 '. Its exact position can be determined by folding over the straight line 100 ', but this is known per se and is therefore not shown in detail. If this method is carried out for a further point of the base line 90, a base line 90 'of the pivoted plane 89' is obtained.
  • the cutter head 7 is then rotated further about the cutter head axis 12, which is in its new position and now appears as a projection 84, until the surface 89 'is perpendicular to the small main axis 85 of the ellipse 87. Thus, it is also perpendicular in space and appears as a surface 89 "or in the fold-over area 89" '. The surface 89 is thus transferred to the desired position 79.
  • the swivel angle ⁇ by which the swivel part 5 has to be swiveled about the swivel axis 15, for example in order to incline the cutter head 7 by ⁇ 30 °, is considerably larger than ⁇ . It follows from this that the scale on the scale ring 75 must, for example, be set up in such a way that the inclination of the cutter head 7 can be read directly there. This contributes to increased reading and setting accuracy. If, for example, a profile grinding wheel is used, its profile angle must be taken into account in the angle calculation for the inclination of the cutter head.
  • the angle 6 between the pivot axis 15 and the cutter head axis 12 is to be selected half as large as the maximum desired inclination of the cutter head 7 against its starting position or half as large as the angle P for the most inclined towards the cutter head axis 12 , to be ground surface of a knife 8. Any profile angles of the grinding wheel 9 must also be taken into account.
  • the uncut knives 8 must be lowered during grinding so that they do not protrude above the knife head surface 88.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Gear Processing (AREA)
  • Machine Tool Units (AREA)
EP80200191A 1979-03-27 1980-03-03 Dispositif pour la fixation des couteaux d'une machine à tailler les engrenages sur une machine à meuler Expired EP0017271B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH282379 1979-03-27
CH2823/79 1979-03-27

Publications (2)

Publication Number Publication Date
EP0017271A1 true EP0017271A1 (fr) 1980-10-15
EP0017271B1 EP0017271B1 (fr) 1982-10-27

Family

ID=4242395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200191A Expired EP0017271B1 (fr) 1979-03-27 1980-03-03 Dispositif pour la fixation des couteaux d'une machine à tailler les engrenages sur une machine à meuler

Country Status (5)

Country Link
US (1) US4287686A (fr)
EP (1) EP0017271B1 (fr)
JP (1) JPS55131431A (fr)
DE (1) DE3060986D1 (fr)
SU (1) SU948284A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101337332B (zh) * 2007-07-06 2011-05-11 康准电子科技（昆山）有限公司 铣刀研磨装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630509A (en) * 1983-03-26 1986-12-23 Mclean Joseph G Articulated assembly of members
JPS6124130U (ja) * 1984-07-14 1986-02-13 株式会社 武田機械 ユニバ−サル割出台
JP4783405B2 (ja) * 2008-07-02 2011-09-28 光洋機械工業株式会社 傾斜角調整装置及びワーク装着装置
JP4783404B2 (ja) * 2008-07-02 2011-09-28 光洋機械工業株式会社 ワーク装着装置
CN108687637B (zh) * 2017-04-07 2024-02-27 江苏美特林科特殊合金股份有限公司 合金棒料定尺切割装置
CN110561255B (zh) * 2019-09-09 2020-12-04 安徽匠桥科技服务有限公司 一种晶粒抛光装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862840A (en) * 1927-09-20 1932-06-14 Gleason Works Machine for sharpening cutters
US2135894A (en) * 1936-03-06 1938-11-08 Goddard & Goddard Company Inc Machine for forming spiral bevel gear cutters
US2210273A (en) * 1938-09-23 1940-08-06 Gleason Works Method of and apparatus for relieving cutters

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902351C (de) * 1938-06-29 1954-01-21 Gleason Works Maschine zum Schleifen von Schneidwerkzeugen mit laengs eines Kreises angeordneten Messern, insbesondere von Zahnradschneidwerkzeugen
FR2234749A5 (fr) * 1973-06-20 1975-01-17 Costil Marcel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862840A (en) * 1927-09-20 1932-06-14 Gleason Works Machine for sharpening cutters
US2135894A (en) * 1936-03-06 1938-11-08 Goddard & Goddard Company Inc Machine for forming spiral bevel gear cutters
US2210273A (en) * 1938-09-23 1940-08-06 Gleason Works Method of and apparatus for relieving cutters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101337332B (zh) * 2007-07-06 2011-05-11 康准电子科技（昆山）有限公司 铣刀研磨装置

Also Published As

Publication number Publication date
SU948284A3 (ru) 1982-07-30
JPS6124137B2 (fr) 1986-06-09
EP0017271B1 (fr) 1982-10-27
US4287686A (en) 1981-09-08
DE3060986D1 (en) 1982-12-02
JPS55131431A (en) 1980-10-13

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