EP0454708A1 - Device for machining workpieces, in particular tools - Google Patents
Device for machining workpieces, in particular toolsInfo
- Publication number
- EP0454708A1 EP0454708A1 EP19900901739 EP90901739A EP0454708A1 EP 0454708 A1 EP0454708 A1 EP 0454708A1 EP 19900901739 EP19900901739 EP 19900901739 EP 90901739 A EP90901739 A EP 90901739A EP 0454708 A1 EP0454708 A1 EP 0454708A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rocker
- axis
- holder
- rotation
- quick
- 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- Withdrawn
Links
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
- B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
Definitions
- the invention relates to a device for machining workpieces, in particular tools, such as for grinding drills, with a processing device, for example a double grinding unit and a receptacle for the workpiece assigned to it.
- a processing device for example a double grinding unit and a receptacle for the workpiece assigned to it.
- the main problem with such devices is that the workpiece to be machined is brought and held at a precise and desired angle to the machining device.
- drills are sharpened by hand on a grinding block, leaving it up to the artisan and experience of the operator how he moves the drill in relation to the grinding wheel.
- the cutting geometry plays a very important role.
- the inventor has set himself the goal of developing an above-mentioned device, by means of which a workpiece to be machined can be brought to a corresponding machining device at any angle, so that extremely versatile machining is possible.
- the machining device is assigned a base frame for guiding a slide, to which a further guide is fixed, which serves to guide another slide, which in turn is assigned a rotary attachment or a rocker holder with an axis of rotation, which is connected to a bearing block on which / the holder or a quick-change holder is arranged.
- the slides movable in the guides generally perform a movement in the x or y axis.
- the two axes of rotation enable the workpiece to be machined to be assigned in all other angles of this plane.
- the bearing block is connected to the rotary attachment in such a way that an axis of rotation is also formed here.
- the bearing bracket to be pivoted through 180 ° in the C axis. This guarantees every possible angular position of the workpiece in relation to the processing device.
- the receptacle and the bearing block should also form an axis of rotation with one another. Since the axis of the receptacle is exactly aligned with the axis of the rotary attachment, this latter rotation axis enables the insertion of longer workpieces to be machined into the receptacle, which would otherwise hit the rotary attachment when inserted through the receptacle.
- the receptacle itself is rotatable about its longitudinal axis and also forms an axis of rotation with a fork.
- the fork connects the mount to the bearing block.
- Corresponding scale rings should be assigned to all axes of rotation, furthermore it is envisaged to enable the loosening of the individual rotatable parts by means of quick-release levers or clamping screws.
- the guides for the slide are designed so that they consist of a threaded spindle and two guide rails. Threaded spindle and guide rails pass through the slide, the threaded spindle meshing with a corresponding internal thread in the slide.
- the guide rails run without play and are sealed with bellows to prevent contamination.
- Each threaded spindle is assigned a rotary handle with corresponding scaling, this rotary handle rotating the threaded spindle. This enables a fine adjustment of the slide. The scaling can be reset to zero.
- a lever with a corresponding locking profile for the threaded spindle passes through the slide. If this lever is lifted out against the forces of a spring or a set of disc springs and, if necessary, locked by pivoting, the detent with the threaded spindle is released and the slide can be moved along the guide rails. A setting near the desired position is then carried out again by reading the lever so that the profile engages in the threads of the threaded spindle. The fine adjustment then takes place again using the rotary handles.
- All rotatable and moving parts can also be clamped, be it with appropriate clamping screws or quick-release levers.
- the quick-change holder has a tendon clamping bolt which is received in a corresponding receiving bore in the rocker holder. If desired, the replacement of an entire quick-change holder, it may be to remove the quick-change tool holder, for example by dissolving an appropriate clamping screw from the ahmebohrung In the 'rocker holder pulled.
- a cycle drum is used in a quick-change holder.
- a quick-change holder with jaw chuck can be used in the rocker holder. This results in a precise running and concentricity of the workpiece, since all parts are firmly connected.
- a measuring magnifier or an alignment holder can also be assigned.
- the entire work equipment is exchangeably connected to the corresponding slide via a rocker holder.
- a corresponding guide pin protrudes from the slide, which engages in the rocker holder and is fixed there with, for example, a clamping screw.
- the rocker holder together with the quick-change holder and a rocker described below can be rotated around this guide pin.
- the quick-change holder Between the rocker holder and the quick-change holder there is a rocker which passes through the rocker holder and forms with it a further axis of rotation which runs approximately perpendicular to the axis of rotation about the guide pin.
- the quick-change holder should also be releasably connected to the rocker. This makes it possible to exchange holding units for various workpieces very quickly and without much effort.
- the quick-change holder now again forms an axis of rotation with the rocker, this axis of rotation preferably running approximately parallel but radially offset to the axis of rotation of the rocker.
- This quick-change holder is constructed in such a way that it rotates about the axis of rotation just mentioned in a plane parallel to the main axis of rotation of the rocker holder, an arm then projecting approximately perpendicular to this plane and holding the receptacle for the workpiece there.
- the longitudinal axis of this receptacle is then arranged in an approximately parallel plane to the main axis of rotation of the rocker holder.
- the quick-change holder is preferably also seated with a locating bolt in a locating bore of the rocker and is held there by clamping.
- This receiving bolt is then preferably assigned two scales, one scaling for the setting of the quick-change holder and the other scaling for the clearance angle setting for surface grinding.
- the double grinding unit has a feather key and a clamping hole. This can be inserted into a fitting groove on the machine table and clamped. This enables the double grinding unit to be pivoted into different positions.
- the present device is particularly suitable for grinding one-, two- and multi-edge drilling tools made of HSS and HM and other materials. It does not matter whether these drilling tools are left-hand or right-hand cutting.
- the tip angle can be 0 ° to 180 °. It is easily possible to sharpen the drilling tool.
- the clearance angle is from 0 ° to 20 ° for surface grinding and 0 ⁇ to 60 ° for surface cutting.
- Fig. 1 is a partially "sectioned side view of a grinding device according to the invention; a plan view of the grinding device corresponding to Fig. 1; a partially shown front view of the grinding device; a partially sectioned side view of another embodiment of a grinding device; a plan view of parts of the grinding device 4, a partially shown front view of the grinding device according to FIG. 4, a partially sectioned side view of a working device according to the invention; Embodiments of quick-change holder.
- a grinding device R has a double grinding unit 1, which essentially consists of an engine block 2, via which a grinding wheel 3 and 4 is driven on each side.
- the double grinding unit 1 also includes a bearing frame 5 which is seated on a base frame 6 (see FIG. 3).
- the mounting of the bearing frame 5 is carried out by means of corresponding screws with quick-release levers 7, which penetrate elongated holes 8, indicated by dashed lines.
- the double grinding unit 1 is designed to be displaceable, and it is also provided that it can be pivoted to a position in three positions, each rotated by 90 °. This saves time when changing over the grinding wheels.
- a drill receptacle as part of a working device P is generally identified by 9 in FIG. 1.
- This drill receptacle 9 is fixed to a bearing block 10 which is connected to a rotary attachment 12 via a screw bolt 11.
- This rotary attachment 12 sits on a carriage 13 which can be moved along a guide 14.
- 2 consists essentially of a central threaded spindle 15 and two lateral guide rails 16 and 17. Both guide rails 16 and 17 and threaded spindle 15 pass through the slide 13, but the threaded spindle 15 meshes a corresponding internal thread in the slide 13 .
- the guide rails 16 and 17 run without play and are secured against contamination.
- the rough adjustment of the slide 13 takes place by moving along the guide 14, a lever 20 being pivoted against the force of a spring 21 out of its detent position with the threaded spindle 15. As soon as the desired position is approximately reached, the lever 20 is pivoted back, so that its correspondingly profiled end face engages in the threads of the threaded spindle 15. Now the slide position can be finely adjusted, which is done using a corresponding rotary handle 22 with a scale 23. The threaded spindle 15 is rotated via this rotary handle 22 while the slide 13 is held by the guide rails 16 and 17. The adjustment takes place in the 0.01 mm range. - 10 -
- the y-axis guide 14 is seated on a slide 25, which is connected to the base frame 6 via guides 27, 28 and is penetrated by a threaded spindle 29.
- the carriage 25 is guided on the base frame 6 in a manner similar to that described for the carriage 13.
- the quick adjustment is carried out by a lever 31, while the fine adjustment is carried out by a rotary handle 32 with a corresponding scale 33.
- a bellows 19 takes over the covers of the guides 27, 28.
- the carriage 25 can be moved in the direction x along the base frame 6. Moving the carriage 13 along the guide 14 enables the drill receptacle 9 to move in the y direction.
- the rotary attachment 12 has an axis of rotation B with the slide 13, a further scale ring 36 also being provided here.
- the rotation ⁇ about the axis of rotation B can also be released by a further quick release lever 37.
- a further quick release lever 37 This is only indicated in Figures 1 and 3.
- FIG. 2 it is provided that four ball catches 40 are each offset by 90 ° between rocker 39 and the bearing block 10, which enable four corresponding positions.
- the drill receptacle 9 is seated with a basic receptacle 4L in a guide bush 42 which engages with a dovetail 43 in a corresponding groove 44 in the rocker 39. This allows the drill bit 9 to be replaced quickly.
- the mounting of the base receptacle 41 in the guide bush 42 is otherwise free of play, a corresponding V-groove 45 being formed in the base receptacle 41 and a ball detent 46 being assigned to it.
- this ball catch 46 and a scale ring 47 enable exact positioning and grinding on the cover.
- a Sehnell monotoniernähme 48 is inserted into the base receptacle 41.
- This Sehnell occidentalaufn hme 48 surrounds a collet 49.
- the Sehnell serpentiernähme 48 is precisely supported by a fitting hole in the base receptacle 41, concentricity and flat support and lockable in certain positions.
- Different types of collets 49 can be used as required by means of different quick-change holders 48.
- the quick-change holders 48 are also available as chisel holders and quick-change holders with different Morse taper sizes (MK 1-4) and as drill chucks.
- the collet 49 is tightened after inserting a corresponding drill 50 via a tightening nut 51.
- the cutting edges of the drill 50 can be aligned in a crosshair of a measuring magnifier 52.
- FIG. 2 also shows that the base receptacle 42 is seated in an additional fork 41a and forms an axis of rotation E with it. This fork 41a then also engages with the dovetail 43 in the groove 44. This makes it possible to pivot the receptacle 9 about the axis of rotation E.
- a grinding device R1 has a double grinding unit 101, which essentially consists of an engine block 102, via which a grinding wheel 103 and 104 is driven on each side.
- the double grinding unit 101 also includes a sliding block 105, via which it sits on the base frame 106 (see FIG. 5) in an elongated hole.
- the motor block 102 is held by means of a corresponding screw clamping lever 139.
- the double grinding unit 101 is designed to be displaceable, it also being provided that it can be rotated, swiveled or exchanged in each case on the cover in different positions. This saves time when changing over the grinding wheels.
- a quick-change holder 109 for a 6-jaw chuck 108 is received with a mounting pin 112 in a receiving bore 107 of a rocker holder 110.
- the rocker holder 110 has a scale 111 for setting the tip angle for a left and right tool.
- the rocker holder 110 also has a receiving bore and is placed on an upper slide 113, which can be moved along a guide 114.
- This guide 114 essentially consists of a central threaded spindle 115 and two lateral guide rails 116 and 117 (see FIG. 6). Both guide rails 116 and 117 as well as threaded spindle 115 pass through the upper slide 113, but the threaded spindle 115 meshes a corresponding internal thread in the slide 113.
- the guide rails 116 and 117 run without play and are secured against contamination.
- the upper slide 113 is roughly adjusted by moving it along the guide 114, a lever 120 being pivoted against the force of a spring 121 out of its locked position with the threaded spindle 115. As soon as the desired position is approximately reached, the lever 120 is pivoted back so that its correspondingly profiled end face engages in the threads of the threaded spindle 115. Now the slide position can be finely adjusted, which is done using a corresponding rotary handle 122 with a scale 123. The threaded spindle 115 is rotated via this rotary handle 122, while the upper slide 113 is held by the guide rails 116 and 117. The adjustment takes place in the 0.01 mm range.
- the y-axis guide 114 is seated on a slide 118 which is connected to the base frame 106 via guide rails 127, 128 and is penetrated by a threaded spindle 129.
- the carriage 118 is guided on the base frame 106 in a manner similar to that described for the upper carriage 113.
- the quick adjustment is carried out by a lever 119, while the fine adjustment is carried out by a rotary handle 124 with a corresponding scaling 125 (see FIG. 6).
- the carriage 118 can be moved in the direction x along the base frame 106. Moving the upper slide 113 along the guide 114 enables the quick-change holder 109 to be moved in the direction Y -
- the rocker holder 110 has an axis of rotation B with the upper slide 113, a further scale ring 111 also being provided here.
- a rotation possibility of 360 ° is again provided, which is made possible by releasing a rocker clamp 130.
- This release relieves a rocker 131 with a corresponding scaling, so that the rocker 131 can be pivoted about a further axis of rotation D.
- four ball catches 132 are each offset by 90 ° between rocker 131 and rocker holder 110, which enable four corresponding basic positions.
- the jaw chuck 108 is seated on a cycle drum 126 in the quick-change holder 109, which engages with the locating bolt 112 in the corresponding locating bore 107 of the rocker 131.
- the quick-change holder 109 can be replaced quickly.
- the storage of the clock drum 126 in the cutting holder 109 is otherwise free of play, with corresponding positions being formed in the clock drum 126 and being assigned a ball catch or a positioning or clamping screw.
- this ball catch and positioning and clamping screw and a scale ring 134 enable exact positioning and grinding on the cover.
- the rocker holder 110 is seated on a guide pin 140 which is firmly connected to the upper slide 113.
- the rocker holder 110 is rotatable about the axis B and can be fixed in a desired rotational position by a clamping screw 141.
- the rocker 131 passes through the rocker holder 110, the rocker 131 forming the axis of rotation D relative to the rocker holder 110.
- the rocker 131 and, together with it, the quick-change holder 109 with the jaw chuck 108 can be rotated about this axis of rotation D.
- the rocker 131 is supported with a counter bearing 142 without play and can be locked by a rocker clamp 130.
- the rocker clamp 130 consists of a clamping screw which passes through a disk 143 and strikes the rocker holder 110.
- This disk 143 can be rotated about the axis of rotation D.
- a corresponding handle 144 is provided for which purpose a corresponding handle 144 is provided.
- the spherical race 132 can be seen, as a result of which the rocker 131 can be fixed in various basic positions, for example in 4 x 90 °.
- a stop ring 136 is also provided on the disk 143, which cooperates with a stop 145 on the rocker holder 110 to limit the rotation of the rocker 131 about the axis of rotation D.
- the receiving bore 107 can also be seen, which serves to receive the receiving bolt 112.
- This locating pin 112 forms the axis of rotation C, about which the quick-change holder 109 rotates.
- this axis of rotation C two scale rings 146 and 147 are assigned, the scale ring 146 for setting the quick-change holder 109 and the scale ring 147 for setting the clearance angle for a surface grinding.
- the receiving bore 7 of the rocker 131 also serves to receive various quick-change holders 109, which are shown, for example, in FIGS. 8 to 11.
- a corresponding grub screw 148 is used to fix the locating bolt 112 in the locating bore 107.
- the quick-change holder also forms a ball catch 14 * 9 with the rocker 131, by means of which it is possible to fix the quick-change holder 109 in different catch positions relative to the rocker 131.
- the quick-change holder 109 comprises the jaw chuck 108, here an axis of rotation A being formed for the jaw chuck 108.
- the jaw chuck 108 sits on the rest of the clock drum 126, which has a division of 12 and a scale ring 134. This scale ring 134 is used for exact positioning of the tool cutting edges and for grinding on the cover.
- the jaw chuck 108 is also held in the cutting tool holder 109 by means of a clamping and positioning screw 133, a ball catch being provided here too for precise alignment of the tool cutting edges.
- FIGS. 8 to 11 show different recordings which are held by the respective quick-change holder 109.
- FIG. 8 it is a quick-change tool holder 108a, according to FIG. 9 a rotary planer 108b and according to FIG. 10 a so-called SK40 holder 8c.
- these exemplary embodiments could be supplemented as desired.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Dans un dispositif d'usinage de pièces, notamment d'outils, par exemple d'affûtage de forets, ayant un organe d'usinage, par exemple une unité double d'affûtage, et un porte-outil associé à celui-ci, un châssis de base (6, 106) de guidage d'un chariot (25, 118) est associé à l'organe d'usinage (1, 101). Un autre guidage (14, 114) d'un autre chariot (13, 113) est fixé au premier chariot. Le deuxième chariot est relié à son tour à une garniture rotative (12) ou à un porte-bascule (110) avec un axe de rotation (B) relié à un support (10) ou à une bascule (131) sur lesquels sont agencés l'appui (9) ou un porte-outil (109) à serrage rapide.In a device for machining parts, in particular tools, for example for sharpening drill bits, having a machining member, for example a double sharpening unit, and a tool holder associated therewith, a base frame (6, 106) for guiding a carriage (25, 118) is associated with the machining member (1, 101). Another guide (14, 114) of another carriage (13, 113) is attached to the first carriage. The second carriage is in turn connected to a rotating pad (12) or to a rocker carrier (110) with a rotation axis (B) connected to a support (10) or to a rocker (131) on which are arranged the support (9) or a tool holder (109) with quick clamping.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8900586 | 1989-01-20 | ||
DE8900586U | 1989-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0454708A1 true EP0454708A1 (en) | 1991-11-06 |
Family
ID=6835206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900901739 Withdrawn EP0454708A1 (en) | 1989-01-20 | 1990-01-22 | Device for machining workpieces, in particular tools |
Country Status (4)
Country | Link |
---|---|
US (1) | US5184431A (en) |
EP (1) | EP0454708A1 (en) |
DE (1) | DE9000623U1 (en) |
WO (1) | WO1990008011A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124417A1 (en) * | 1990-08-31 | 1992-03-05 | Mas Vertriebsgesellschaft Fuer | Sharpening hard metal drill bits - involves carrying out all three stages of operation with drill bit held in same chuck |
DE10100709B4 (en) * | 2001-01-10 | 2004-02-19 | Karl-Heinz Giebmanns | Machine tool with a partition between a housing and a work area |
US7329173B2 (en) * | 2005-09-29 | 2008-02-12 | Yeo-Ching Song | Tool grinding machine |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1783540A (en) * | 1928-01-07 | 1930-12-02 | Nat Acme Co | Die-chaser-grinding fixture |
US1807999A (en) * | 1929-05-22 | 1931-06-02 | Edward P Mcmurtry | Universally adjustable tool holder |
DE751818C (en) * | 1940-11-26 | 1952-10-06 | Karl Trippel | Machine for grinding twist drills |
US2432058A (en) * | 1943-07-30 | 1947-12-02 | Rockwell Mfg Co | Machine tool |
US2724931A (en) * | 1954-04-22 | 1955-11-29 | Axel H Brandt | Apparatus for grinding drill bits |
US3073076A (en) * | 1960-03-21 | 1963-01-15 | William H Field Co Inc | Radius cutter grinding machine |
US3039244A (en) * | 1961-03-06 | 1962-06-19 | Wynn S Vickerman | Tool grinding fixture |
US3680268A (en) * | 1970-04-02 | 1972-08-01 | Calvin J Lorton | Workpiece vise support attachment for surface grinding machine |
CH640165A5 (en) * | 1979-09-06 | 1983-12-30 | Megomat Ag | DRILL GRINDING MACHINE. |
CH640450A5 (en) * | 1979-10-08 | 1984-01-13 | Megomat Ag | Apparatus for grinding a tool |
IT1137357B (en) * | 1981-04-14 | 1986-09-10 | Lago Gianluigi Dal | DIAMOND |
CH655035A5 (en) * | 1982-03-09 | 1986-03-27 | Gottstein Fritz | CLAMPING HEAD FOR A DRILL GRINDING MACHINE. |
DE3627012A1 (en) * | 1986-08-09 | 1988-02-18 | Reinhold Reiling | DEVICE FOR GRINDING DRILL CUTTING |
-
1990
- 1990-01-22 DE DE9000623U patent/DE9000623U1/en not_active Expired - Lifetime
- 1990-01-22 EP EP19900901739 patent/EP0454708A1/en not_active Withdrawn
- 1990-01-22 US US07/721,602 patent/US5184431A/en not_active Expired - Fee Related
- 1990-01-22 WO PCT/DE1990/000033 patent/WO1990008011A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9008011A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE9000623U1 (en) | 1990-08-23 |
US5184431A (en) | 1993-02-09 |
WO1990008011A1 (en) | 1990-07-26 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19910627 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE ES FR GB IT LI NL SE |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: COMBROWSKI, ZBIGNIEW Inventor name: HAMMA, ARMIN |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: C & H WERKZEUGMASCHINEN GMBH |
|
17Q | First examination report despatched |
Effective date: 19921014 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19940222 |