GB2065515A - Method and machine for forming a chamfer or groove on a workpiece - Google PatentsMethod and machine for forming a chamfer or groove on a workpiece Download PDF
- Publication number
- GB2065515A GB2065515A GB8036796A GB8036796A GB2065515A GB 2065515 A GB2065515 A GB 2065515A GB 8036796 A GB8036796 A GB 8036796A GB 8036796 A GB8036796 A GB 8036796A GB 2065515 A GB2065515 A GB 2065515A
- United Kingdom
- Prior art keywords
- 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.)
- 239000000463 materials Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 239000011521 glasses Substances 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reactions Methods 0.000 description 2
- -1 Corindon Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q33/00—Methods for copying
- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/085—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass for watch glasses
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/06—Devices for shaping or setting watch glasses
- G04D3/065—Shaping by removing material, e.g. cutting out from a plate, milling the edges
SPECIFICATION Working method and machine for carrying out this method The present invention relates to a working method, by copying, of a workpiece a surface of which is already pre-worked, as well as to a machine for carrying out this method.
The purpose of the invention is to simplify the working and the machine by using the very preworked surface of the workpiece as a copying templet that permits moreover to place the workpiece on the spindle of the machine without having to center it precisely.
The drawing shows, by way of example, one embodiment of the invention and a modification of a workpiece represented in work.
Figure 1 is an elevational view of the two portions, separated, of a machine serving to grind the edge of watch glasses made of extra-hard material.
Figure 2 is a profile view of the right portion, seen in Fig. 1, of the machine.
Figure 3 is a plan view of this machine, the two portions of which are in their working position.
Figure 4 is a view of a detail at a larger scale.
Figure 5 is a view of a portion of this detail at a still larger scale, and Figure 6 is a sectional view of a modification of a workpiece.
The machine as illustrated comprises two distinct portions, generally designated by 1 and 2, respectively, the first one of which serves to drive the cutting tool, a diamond grinding-wheel 3 in the example as represented and, the second one to the driving of the workpiece, a watch glass 4 in the present case, on the pre-worked edge of which it is contemplated to provide a chamfer.
The portion 1 of the machine comprises a stationary frame 5 carrying a crossed slides generally designated by 6, on the upper part of which is mounted a sliding member 7 carrying a quill 8 the shaft 9 of which, carrying the grinding-wheel 3, is driven by a motor 10 by means of a transmission belt 11.
The motor 10 thus drives the grinding-wheel 3.
The sliding member 7 carries moreover, mounted on a bracket 12, a motor 13 driving a crank 14 the crank-shaft 15 of which is moved in a rectilinear slide 16. The motor 13 thus produces a go-and-back movement, in the sense of the arrow 17 of Fig. 1, of the quill 8 and of the grinding-wheel 3, which is necessary when it is matter of working extrahard materials such as Corindon, sapphire, etc.
The portion 2 of the machine comprises a quill 18 against the end of the spindle 19 of which is applied the work-piece 4 by means of a lever 20, articulated at 21, and which is submitted to the action of a control shaft 22 exerting thereon a pull.
The quill 18 is carried by an oscillating arm 23 articulated at 24 on the frame 25 of this portion of the machine and which, in its working position, is slightly inclined, as shows Fig. 2, thus maintaining, by its own weight, the glass 4 bearing, by its preworked edge 26 (Figs. 4 and 5), against an abutting member constituted by a circular disc 27, of the same diameter as the grinding-wheel 3, mounted on a shaft 28 rotating in a headstock 29. The spindle 19 on which is mounted the workpiece is driven by a motor 30 through the intermediary of two transmission belts 31 and 32.
So as to permit the axial go-and-back movement of the grinding-wheel 3 indicated by the arrow 33 of Fig. 5, without the said grindingwheel encounters the disc 27 constituting an abutting roller, the front face of this disc, facing the grinding-wheel 3, is provided with a recess 34 the lateral face 35 of which (Figs.
4 and 5) is frusto-conical so as to maintain the rigidity of the disc 27. The angle made by the frusto-conical face 35 of the recess 34 of the disc 27 depends from the inclination of the chamfer 36 one wants to realize, by means of the grinding-wheel 3, on the edge 26 of the glass 4.
Owing to the present arrangement, one uses the very pre-worked surface of the workpiece as a copying templet, that is a great simplification. Moreover, one prevents one of the main difficulties of any operation comprising successive stages, which consists in placing on the machine the workpiece in a rigorously exact position. As a matter of fact, a glass 4 can be placed on the spindle 19 in any position, its centering with respect to the spindle playing no role so far as the precision of the working is concerned, since the working is effected while using a surface of the very workpiece as a reference. The outline of the worked surface, here the chamfer 36, corresponds automatically to the outline of the pre-worked surface, here the edge 26 of the glass 4.
The working thus realized can be different from a chamfer and constitutes, for instance, a groove, as groove 37 of glass 38 of Fig. 6 provided in the preworked edge 39 thereof.
This edge 39 serves as a reference surface or as a templet for the working of the groove 37 the same way as in the case of the chamfer 36 of the glass 4. Here, the grinding-wheel will not have to effect an axial go-and-back movement.
Obviously, the method and the machine according to the invention could serve to the working of any workpiece needing an operation comprising successive steps and not only to the work of watch-casings.
Moreover, the workpieces can be other than circular, but be shaped, quadrangular for in stance, the pre-worked surface being able to be made of segments of a plane surface separated by edges. In this case, the experience shows that more the axis of the grindingwheel is inclined with respect to the axis of the spindle, more it is necessary to reduce the diameter of the abutting disc.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|CH1048379A CH635716A (en)||1979-11-26||1979-11-26|
|Publication Number||Publication Date|
|GB2065515A true GB2065515A (en)||1981-07-01|
|GB2065515B GB2065515B (en)||1983-03-02|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|GB8036796A Expired GB2065515B (en)||1979-11-26||1980-11-17||Method and machine for forming a chamfer or groove on a workpiece|
Country Status (6)
|JP (1)||JPS5689467A (en)|
|CH (1)||CH635716A (en)|
|DE (1)||DE3044116A1 (en)|
|FR (1)||FR2470405A1 (en)|
|GB (1)||GB2065515B (en)|
|IT (1)||IT8050208D0 (en)|
Families Citing this family (1)
|Publication number||Priority date||Publication date||Assignee||Title|
|DE3710140A1 (en) *||1987-03-31||1988-10-13||Michelberger Stefan||Device for the automatic machining of an edge of a workpiece|
- 1979-11-26 CH CH1048379A patent/CH635716A/it unknown
- 1980-11-17 GB GB8036796A patent/GB2065515B/en not_active Expired
- 1980-11-20 IT IT5020880A patent/IT8050208D0/en unknown
- 1980-11-21 JP JP16521580A patent/JPS5689467A/en active Pending
- 1980-11-24 DE DE19803044116 patent/DE3044116A1/en not_active Withdrawn
- 1980-11-25 FR FR8025004A patent/FR2470405A1/en not_active Withdrawn
Also Published As
|Publication number||Publication date|
|ES2171580T5 (en)||Procedure and tool for the generation of a concava surface from a gross glass for glasses.|
|US5409417A (en)||Numerically controlled grinding machine for plate glass|
|EP1413938B1 (en)||Numerical control (NC) machine with onboard grinding unit|
|US4905415A (en)||Fiber optic terminus grinding and polishing machine|
|US7281967B2 (en)||Machine for grinding optical lenses|
|JP2610931B2 (en)||Optical fiber connector end face processing equipment|
|JP3034276B2 (en)||Glass sheet processing method and equipment|
|US3627490A (en)||Grinding machine with automatic wheel exchange device|
|US20060260447A1 (en)||Machine for machining optical workpieces, in particular plastic spectacle lenses|
|US5149337A (en)||Lens grinder and method of grinding lens|
|US5363597A (en)||Eyelgass lens edging machine|
|EP1050370A3 (en)||Grinding machine with a short stiffness loop between tool and workpiece|
|EP1243380A3 (en)||Device for grinding edges of optical lenses|
|JP4969457B2 (en)||Neck grinding machine|
|US20040226155A1 (en)||Device to produce round cross-section articles with complicated profiled surfaces|
|US4386483A (en)||Method and apparatus for grinding convergent conical surfaces|
|DE29724906U1 (en)||High speed machine tool for manufacture of optical surfaces - has tool carriage which can move in radial and axial directions about workpiece holder under influence of linear motor or in combination with conventional slider mechanism|
|KR20090056886A (en)||Apparatus for processing eyeglass lens|
|DE102004054104A1 (en)||Process for dressing a chamfering disk and chamfering device|
|US4760672A (en)||Simultaneously grinding and polishing preforms for optical lenses|
|SU707512A3 (en)||Device for working external and internal surfaces of polygonal-shape articles|
|PT1520659E (en)||A stone or marble slab polishing machine comprising a template|
|US4210038A (en)||Lathe having a guided movable cutter|
|GB2125717A (en)||Bevelling an edge of a workpiece|
|US4841676A (en)||Turning tool for machining the edges of plastic lenses|
|PCNP||Patent ceased through non-payment of renewal fee|