EP0220375A2 - Tête porte-meule pour machine à affûter les outils de coupe à rainures hélicoidales - Google Patents

Tête porte-meule pour machine à affûter les outils de coupe à rainures hélicoidales Download PDF

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Publication number
EP0220375A2
EP0220375A2 EP86108703A EP86108703A EP0220375A2 EP 0220375 A2 EP0220375 A2 EP 0220375A2 EP 86108703 A EP86108703 A EP 86108703A EP 86108703 A EP86108703 A EP 86108703A EP 0220375 A2 EP0220375 A2 EP 0220375A2
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding head
axis
tool
spindle
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Withdrawn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
EP86108703A
Other languages
German (de)
English (en)
Other versions
EP0220375A3 (fr
Inventor
Volker Zang
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0220375A2 publication Critical patent/EP0220375A2/fr
Publication of EP0220375A3 publication Critical patent/EP0220375A3/fr
Withdrawn legal-status Critical Current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
    • B24B3/02—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 grinding head for a tool grinding machine for helically grooved cutting tools according to the preamble of claim 1.
  • a grinding table which can be pivoted about a vertical axis is mounted on a longitudinal table for receiving the tool carrier, while the transverse table, which is movable transversely thereto, supports the grinding head carrier.
  • the workpiece to be grinded must be adjusted with the tool holder in relation to the grinding wheel so that the surface to be grinded coincides with the horizontal swivel axis of a faceplate defined by a stop finger.
  • the grinding wheel is adjusted by means of the mentioned carriage so that it touches the surface of the workpiece to be ground before the grinding process can be carried out.
  • the grinding wheel of such a grinding head is now set to the pitch angle of the cutting tool, the point of application of the grinding wheel during subsequent grinding moves out of the center of the axis cutting the cutting tool perpendicular to the axis of rotation, since during the grinding process of the cutting tool, the grinding wheel only moves along the vertical Z axis of the grinding head can be delivered.
  • a desired rake angle is therefore only possible by approximation by simultaneous infeed in the Z and Y axes. Until now, the size of these infeed movements could only be determined by trial grinding a cutting tool with subsequent measurement and a new correction of the setting values.
  • the invention has for its object to develop the grinding head of the known tool grinding machine in such a way that when grinding the rake angle of helically fluted cutting tools, only a single infeed movement along a single axis of the support carrying the grinding wheel can be generated depending on the center point of the cutting tool and its diameter, and so on to enable a linear contact between the rake face of the cutting tool and the grinding wheel and thus a feed movement of the grinding wheel which does not distort the rake angle of the cutting tool.
  • the rake angle is adjusted about a swivel axis which is related to the respective diameter of the tool to be ground and is adjustable so that the rake angle once set is retained even during the feed movement of the grinding wheel.
  • the grinding of a desired rake angle on spiral-fluted cutting tools is reproducible for the first time, for example according to a scale, and can also be automated for the first time.
  • Profile distortions for example in the case of conical milling tools, can also be compensated for, since the swivel axis can be adjusted during grinding, for example using stepper motors. Another advantage can be seen in the fact that, with the help of the same setting means, the grinding can also be removed in the correct shape is possible.
  • a grinding head is known from DE-PS 920 050, in which the grinding spindle carrying the grinding wheel is arranged in a grinding shaft bearing which can be pivoted about an axis which cuts the grinding spindle axis at right angles and which is carried by a feed carriage which is reciprocable along a horizontal axis is, which in turn is arranged pivotably about a vertical axis on a boom which can be pivoted about a horizontal axis, the boom being mounted to and fro by means of a slide guide on a vertical face plate which can be rotated about the horizontal axis, so as to achieve the desired feed movements of the grinding wheel according to a chosen clearance angle of the workpiece to be ground.
  • this grinding head can only be used to grind the front clearance angles on so-called cutter heads
  • the support that supports the grinding spindle can only be pivoted about a fixed axis and can therefore not be adjusted to the center point of a spiral-grooved cutting tool or its diameter.
  • the same rake angle errors would occur when grinding helically grooved cutting tools, as was explained at the beginning.
  • a workpiece headstock 16 with its tailstock 17 is mounted on the longitudinal slide 9 and carries a workpiece to be ground, namely a so-called twist-grooved milling cutter 20, on a spindle 19 clamped between centers.
  • the workpiece headstock can be moved back and forth in the direction of the arrows WL1 and WL2 along an axis labeled X1 and rotated in the direction of the arrows WD1 and WD2 about this axis.
  • the grinding head 15 comprises a grinding spindle 22 which is rotatably mounted in an infeed carriage 21 and on which a grinding wheel 23 to be assigned to the respective workpiece is mounted, the grinding surface of which has a cone angle K in the exemplary embodiment shown.
  • the back and forth along an axis designated by Y2 - arrows LY1, LY2 - slide 21 is rotatably supported on an angular swivel slide 25 about an axis X2 penetrating point D3 in the direction of arrows XD1 and XD2.
  • the swivel carriage 25 is in turn rotatably supported by its cross member 26 on the arm 24 of an adjusting slide 27 about an axis D2 penetrating the point D4 in the direction of the arrows ZS1 and ZS2.
  • the adjusting slide 27 is mounted in a slide guide 29 up and down along the axis labeled Z2 '.
  • the sledge guide 29 is pivoted about a pivot point denoted by D2, embodied by a bearing pin 10 fastened in the support arm 11 and in a semicircular groove 14 on the support arm 11 of the grinding head column 13, namely about the axis Z2 'in the direction of the arrows ZS3 and ZS4.
  • the slide guide 29 can be fixed in the respective setting position with the aid of a toggle screw 18.
  • the grinding head column 13 is also along an axis labeled Z1 - as already mentioned - up and down and along the arrows SKS1 and SKS2 and along an axis labeled Y1 back and forth in the stand 6, see arrows SKS3 and SKS4.
  • the arrangement of the various slides and their storage as well as their adjustability described above make it possible to align the grinding wheel 23 both on the axis X 1, that is on the center axis D 1 of the tool to be ground, and additionally on the point D 2, that is on the diameter of the tool to be ground , until X1 and D2 are vertically one above the other, and to pivot this point - bolt 10 - according to the rake angle of the tool to be grinded.
  • the respective setting that is, the pivoting in the direction of ZS3 and ZS4, the slide guide 29 is fixed by tightening the toggle screw 18.
  • the grinding wheel 23 is also pivoted according to its cone angle about the point D3 -axis Y2 -; see. Fig. 2. Only after these settings, the grinding wheel for generating the desired cutting surface is adjusted and driven in the usual way via the adjusting slide 27.
  • the axis Z2 'shown there thus represents the corrected infeed axis corresponding to the rake angle to be generated.
  • the point D2 is the point of intersection between the axes A1 and Z2, of which the axis A1 cuts the tool 20 to be ground in its center D1, while the axis Z2 the pivot points D4 - setting the pitch angle corresponding to the pitch of the spiral grooves of the tool 20 -, D3 - setting the cone angle K of the grinding wheel 23 - and D2 as the pivot point of the adjusting slide 29 cuts; these axes thus embody the rake angle of the tool 20 to be ground.
  • the grinding wheel 23 is thus pivoted about a further axis Z2 '(pivot point D2), which is axially parallel to the axis Z1 in the zero position, while it is only rotatable about the axis Z2 (pivot point D4), by means of its slide 21st , 24, 26, 27 and 29.
  • it is adjustable about the axis Y2 for the purpose of correcting its cone angle, namely about the pivot point D3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP86108703A 1985-10-31 1986-06-26 Tête porte-meule pour machine à affûter les outils de coupe à rainures hélicoidales Withdrawn EP0220375A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853538795 DE3538795A1 (de) 1985-10-31 1985-10-31 Schleifkopf fuer eine werkzeugschleifmaschine fuer wendelgenutete schneidwerkzeuge
DE3538795 1985-10-31

Publications (2)

Publication Number Publication Date
EP0220375A2 true EP0220375A2 (fr) 1987-05-06
EP0220375A3 EP0220375A3 (fr) 1988-12-14

Family

ID=6284956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108703A Withdrawn EP0220375A3 (fr) 1985-10-31 1986-06-26 Tête porte-meule pour machine à affûter les outils de coupe à rainures hélicoidales

Country Status (4)

Country Link
US (1) US4817338A (fr)
EP (1) EP0220375A3 (fr)
JP (1) JPS6362648A (fr)
DE (1) DE3538795A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328034A3 (fr) * 1988-02-10 1991-05-02 Guehring Automation GmbH Rectifieuse d'outillage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234881B1 (en) * 1998-08-06 2001-05-22 Walter Ag Grinding machine for forming chip-producing cutting tools
JP4577351B2 (ja) 2007-11-29 2010-11-10 トヨタ自動車株式会社 トルク変動吸収装置
RU2605399C2 (ru) * 2011-03-24 2016-12-20 Эрвин Юнкер Машиненфабрик Гмбх Шлифовальный станок с поворотной опорой узла шлифовального шпинделя и способ поворота шлифовального шпинделя в шлифовальном станке
CN103495919A (zh) * 2013-10-11 2014-01-08 平湖市山特螺纹工具有限公司 磨槽机的滑动台

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920050C (de) * 1952-02-03 1955-03-07 Walter Richard R Walter Fa Werkzeugschleifmaschine
US3680263A (en) * 1970-06-03 1972-08-01 Huffman S E Corp Method and apparatus for grinding end cutting tools
US4115956A (en) * 1977-06-28 1978-09-26 S. E. Huffman Corporation Programmably controlled machine for grinding end cutting tools and the like
JPS59219156A (ja) * 1983-05-25 1984-12-10 Makino Furaisu Seiki Kk 工具研削盤における研削位置の設定方法と装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0328034A3 (fr) * 1988-02-10 1991-05-02 Guehring Automation GmbH Rectifieuse d'outillage

Also Published As

Publication number Publication date
EP0220375A3 (fr) 1988-12-14
DE3538795A1 (de) 1987-05-07
US4817338A (en) 1989-04-04
JPS6362648A (ja) 1988-03-18

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