WO2005118219A1 - Pince de maintien d’une piece a usiner dans une machine de meulage - Google Patents
Pince de maintien d’une piece a usiner dans une machine de meulage Download PDFInfo
- Publication number
- WO2005118219A1 WO2005118219A1 PCT/CH2005/000290 CH2005000290W WO2005118219A1 WO 2005118219 A1 WO2005118219 A1 WO 2005118219A1 CH 2005000290 W CH2005000290 W CH 2005000290W WO 2005118219 A1 WO2005118219 A1 WO 2005118219A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- branches
- arms
- clamp
- pivoting device
- central zone
- Prior art date
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
- B24B3/247—Supports for 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
- B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0047—Drilling of holes
Definitions
- Pliers for holding a workpiece in a grinding machine are provided.
- the present invention relates to a clamp for holding a workpiece in a grinding machine.
- the grinding machine is equipped with a holding clamp ensuring secure support of the workpiece, in particular of the cylindrical end portion of the drill during at least part of the operations.
- Retaining clamps comprising, in one piece, a central zone of attachment to a support and two parallel branches connected to the central zone by several narrow arms which are elastically deformable. At one of their ends, the branches are provided with spouts adapted to the type of parts to be supported while a pressure mechanism acts on their other end to cause the clamping of the spouts.
- the clamp In the state of rest, the clamp is in the open position and its closing, for engagement of the part, requires the action of a guided pusher acting between the ends of the arms of the clamp opposite to those carrying the spouts.
- the spouts When the spouts are closed, the part, the pliers arms and the pusher constitute a hyperstatic system. It follows that, if the closing movement is not strictly isometric (for example if the pusher does not press equally on the two branches of the clamp, in particular due to wear or play), this movement causes a displacement of the part which constitutes the weak element of the system.
- the subject of the present invention is an improved holding clamp, with which the workpiece is gripped by elastic deformation but passively, in the absence of force outside.
- the mounting of the spouts is such that the clamp exerts in the closed position a determined force on the part, without external action.
- the present invention relates to a gripper for holding a workpiece on a grinding machine, in particular for drilling drills with end portion having a large length to diameter ratio, comprising a gripper body in one piece with two parallel branches having a rear end and a front end, with a central zone for fixing the clamp on a support, and elastically flexible arms cut out from the body so as to ensure the connection between the central zone and the branches by forming a pivoting device , so that a control member acting on the rear ends of the branches causes the front ends to be moved apart or brought together by pivoting the branches in the pivoting device, characterized in that the pivoting device is arranged so that the control member being in a rest position, the front ends of the branches are brought together es and the clamp is in the closed position, while in moving towards an active position, this control member deforms the pivoting device and the front ends of the branches are spaced apart.
- the front ends of the branches are equipped with clamping spouts adapted to the dimensions of the part to be maintained, fixed by fixing means, so as to prevent any displacement during grinding.
- the opening of the clamp can be obtained by displacement of a control member in translation along the rear ends of the branches, two diverging ramps on the branches of the clamp transforming the longitudinal movement into a transverse movement causing the branches to pivot.
- at least one of the tips of the spouts has a groove having a vee shape so as to constitute two points of contact with the workpiece, which makes it possible to maintain the workpiece to be ground. '' in a statically determined manner, without risk of modification of the conditions of taking.
- the pivoting device is preferably produced by a cut in the blank of the body of the clamp by forming four elastic arms connecting two by two the central area to each of the branches which determines two parallel, fictitious axes of rotation, ensuring operation high precision.
- the construction according to the invention makes it possible to produce pliers capable of holding end cylindrical parts of drills of very small diameters, in particular diameters of the order of 0.05 mm.
- Such drills are used for example on printed circuit boards to execute holes with an accuracy of the order of a micron.
- - fig. 1 is a top plan view showing the one-piece body of the clamp
- - figs. 2, 3 and 4 are views of a clamping spout, respectively in plan, in side elevation and in end elevation;
- - fig. 5 is a plan view on an enlarged scale showing the part of the tip of the spout of FIG. 2 located inside the circle c;
- FIG. 6 is a top plan view showing the pliers complete with its control member.
- the clamp body 1 shown in FIG. 1 is a steel part having the desired metallurgical properties so that its various parts, obtained after cutting, fulfill the required functions. These different parts include a central zone 2, two parallel branches of symmetrical shapes 3 and 4, and a pivoting device 5 forming two fictitious pivot axes a and b (corresponding to the respective intersections of the axes of the arms 12 and 15 and of the arms 13 and 14 described below), which we see that they are located on the same line perpendicular to the general longitudinal axis of the clamp, on either side of this axis.
- the central zone 2 is rectangular in shape with a central hole 6 tapped for fixing the body 1 on a fixed support, and with four holes 7 adjusted and intended to receive positioning pins on the support. It is delimited with respect to the branches 3 and 4 by a narrow cutout 8 which surrounds it on its four sides except in the center of the side facing the front end of the branches.
- This interruption of the cutout 8 located between two slightly enlarged end portions 8a and 8b forms the base of the pivoting device 5.
- the device for pivot 5 consists of four short and narrow arms 12, 13, 14 and 15 arranged in a fan shape and connecting the arms 3 and 4 by their front part to the central zone 2 of the body 1.
- tools can be used with controlled command, like EDM for example.
- the cutting is carried out so that the two arms 12 and 13 are oriented substantially parallel to the longitudinal axis of the clamp, with the two arms 14 and 15 oriented substantially perpendicular to said longitudinal axis.
- a slightly trapezoidal space 16 separates the rear ends of the branches 3 and 4 which each still have a ramp 27 and 28 intended to cooperate with a control member 26 (fig. 6) of the openings and closings of the clamp, as will be seen more far. Stops 32, 33 for limiting the opening stroke of the clamp are also provided near the rear ends of the branches 3 and 4.
- FIGS. 2 to 5 One of the clamping spouts 17 is shown in FIGS. 2 to 5.
- plan fig. 2
- it has an elongated generally rectangular shape with, in its front part, a bevelled face and an oblique lateral side.
- Two holes 18 and 19 connected by transverse cutouts respectively to the external face and to the internal face of the spout are provided for the engagement of pins which will be accommodated without play with elastic clamping in corresponding holes of the clamp branch intended for receive the beak.
- the front point of the beak 17 also has a rectangular rim 20 projecting inwards (FIGS. 3 and 4), in which a groove 22 is formed, preferably made of vee. All these elements are produced with extreme precision, the spouts 17 being formed in a highly alloyed steel, for example with quenched and tempered MnCr.
- FIG. 5 the rim 20 of FIG. 2 on a considerably enlarged scale.
- the two sides 23 and 24 of the groove 22 are planar and, in this example, perpendicular to one another.
- the end of an oblique edge between the bevelled face and the upper flat face of the spout 17 terminates in the center of the flank 23.
- the cylindrical surface of a drill 25 is engaged in the groove 22 so as to press along four generatrices against the sides 23 and 24 of the tips of the two nozzles 17.
- only one of the tips 20 of the clamping spouts 17 has a groove 22 with a vee profile, the tip 20 of the other spout may not have a groove.
- one or both grooves with a vee profile can be replaced by grooves in the shape of a half-moon or any other suitable shape.
- the pliers are shown as a whole, with a drill 25, in FIG. 6.
- the two branches 3 and 4 on either side of the central zone 2, are in their closed position, the control member 26 being offset relative to the rear end of the branches and ramps 27 , 28.
- This member 26 is a ring sliding on the outer sides of the branches 3 and 4 and moving under the effect of a mechanism which it is not necessary to describe.
- the space 16 is slightly trapezoidal.
- the longitudinal spaces separating the central zone 2 from the arms 3 and 4 are of slightly trapezoidal shapes. This arrangement allows said spaces to absorb the movement of arms 3 and 4 closer to the opening of the clamp.
- the two nozzles 17 of the clamp are fixed on the front parts of the branches 3 and 4 in positions which are exactly determined by pins 29 engaged in the openings 18 and 19 and the corresponding holes of the branches 3 and 4.
- plates 30 fixed by screws 31 ensure the fixing. It is understood that the positioning of the spouts on the clamp by means of the pins 29 and the screws 31 is carried out as a function of the diameter of the terminal part of the drill, so that in the closed position, with the control member 26 in the offset position , the pivoting device 5 is in a state of elastic bending ensuring the clamping of the terminal part of the drill, so that the grinding can be carried out safely.
- the member 26 is moved to the ramps 27, 28, which has the effect of opening the clamp and therefore allowing the drill to be released.
- the assembly is arranged so that the opening of the clamp is caused by a downward movement of one control member 26.
- the assembly can of course also be arranged so that the opening of the clamp is caused by an upward movement of the control member 26.
- each set of spouts adapted to the different grinding drills can be mounted case by case on the same pliers. However, it may also be preferable to provide that each set of spouts is permanently mounted on different pliers.
- the maintenance of the part is statically determined, without external action, without modification of the gripping conditions.
- the wear of the actuating parts or any other disturbance has no influence on the grip and maintenance of the parts to be ground. Accuracy well below a micron (10 ⁇ 6 meter) can be achieved in practice.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007513646A JP2008500908A (ja) | 2004-06-01 | 2005-05-24 | 研磨機で研磨される部材を保持する先尖固定振れ止めクランプ |
EP05740399A EP1750901A1 (fr) | 2004-06-01 | 2005-05-24 | Pince de maintien d"une piece a usiner dans une machine de meulage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH9212004 | 2004-06-01 | ||
CH921/04 | 2004-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005118219A1 true WO2005118219A1 (fr) | 2005-12-15 |
Family
ID=34967405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2005/000290 WO2005118219A1 (fr) | 2004-06-01 | 2005-05-24 | Pince de maintien d’une piece a usiner dans une machine de meulage |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1750901A1 (fr) |
JP (1) | JP2008500908A (fr) |
KR (1) | KR20070024662A (fr) |
CN (1) | CN100519067C (fr) |
TW (1) | TW200607602A (fr) |
WO (1) | WO2005118219A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011052976A1 (de) | 2011-08-25 | 2013-02-28 | Feinmechanik Michael Deckel Gmbh & Co. Kg | Vorrichtung zum Beschicken einer Schleifmaschine |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100964322B1 (ko) * | 2008-04-29 | 2010-06-17 | 김은옥 | 자동차의 브레이크 디스크 연마기용 방진장치 |
TW201127547A (en) * | 2010-02-10 | 2011-08-16 | Innovation Prec Inc | Fixture |
EP2540438B1 (fr) * | 2011-07-01 | 2013-05-29 | SMW-AUTOBLOK Spannsysteme GmbH | Lunette |
CN103182678B (zh) * | 2011-12-28 | 2015-03-25 | 钜威自动化股份有限公司 | 微型钻针研磨机的夹持装置 |
JP5345712B2 (ja) * | 2012-01-20 | 2013-11-20 | 鉅威自動化股▲分▼有限公司 | マイクロドリル研磨機の締め付け装置 |
KR200468757Y1 (ko) * | 2012-02-14 | 2013-09-06 | 그리 윈 오토메이션 컴퍼니 리미티드 | 마이크로드릴 연마기의 조임 장치 |
TWI681835B (zh) * | 2018-04-09 | 2020-01-11 | 瑞士商瑞士路勞曼迪有限公司 | 用於製造包含螺旋槽的工件之方法及研磨機及用於控制研磨機之程式 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299915A1 (fr) * | 1987-07-15 | 1989-01-18 | SAFAG AG Maschinen- und Pumpenfabrik | Procédé et dispositif pour l'usinage de pièces |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5822799A (ja) * | 1981-08-03 | 1983-02-10 | 三菱電機株式会社 | 人工衛星の質量特性制御方式 |
IL64173A (en) * | 1981-10-30 | 1984-03-30 | Etm Eng Tool Mfg Co Ltd | Machine for grinding points of drills |
JPS6393552A (ja) * | 1986-10-08 | 1988-04-23 | Toyo Mach Kk | ドリル研削盤 |
SE9400282L (sv) * | 1994-01-28 | 1995-07-29 | Cme Blasting & Mining Equip | Hållaranordning |
CN2216881Y (zh) * | 1995-01-14 | 1996-01-10 | 陈朝欣 | 工具支持架 |
US5649853A (en) * | 1996-07-23 | 1997-07-22 | Kuo; Chun-Lin | Drill bit grinding machine |
JP2002301640A (ja) * | 2001-03-30 | 2002-10-15 | Toyo Engineering Kk | ドリル研削揺動ローダー |
-
2005
- 2005-04-29 TW TW094113811A patent/TW200607602A/zh unknown
- 2005-05-24 JP JP2007513646A patent/JP2008500908A/ja active Pending
- 2005-05-24 KR KR1020067027533A patent/KR20070024662A/ko not_active Application Discontinuation
- 2005-05-24 CN CNB2005800226473A patent/CN100519067C/zh not_active Expired - Fee Related
- 2005-05-24 WO PCT/CH2005/000290 patent/WO2005118219A1/fr active Application Filing
- 2005-05-24 EP EP05740399A patent/EP1750901A1/fr not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0299915A1 (fr) * | 1987-07-15 | 1989-01-18 | SAFAG AG Maschinen- und Pumpenfabrik | Procédé et dispositif pour l'usinage de pièces |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011052976A1 (de) | 2011-08-25 | 2013-02-28 | Feinmechanik Michael Deckel Gmbh & Co. Kg | Vorrichtung zum Beschicken einer Schleifmaschine |
DE102011052976B4 (de) * | 2011-08-25 | 2014-03-13 | Feinmechanik Michael Deckel Gmbh & Co. Kg | Greifkopf zum Beschicken einer Schleifmaschine |
Also Published As
Publication number | Publication date |
---|---|
CN100519067C (zh) | 2009-07-29 |
KR20070024662A (ko) | 2007-03-02 |
TW200607602A (en) | 2006-03-01 |
JP2008500908A (ja) | 2008-01-17 |
CN1980770A (zh) | 2007-06-13 |
EP1750901A1 (fr) | 2007-02-14 |
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