WO2001064393A1 - Grinding machine - Google Patents
Grinding machine Download PDFInfo
- Publication number
- WO2001064393A1 WO2001064393A1 PCT/EP2001/002067 EP0102067W WO0164393A1 WO 2001064393 A1 WO2001064393 A1 WO 2001064393A1 EP 0102067 W EP0102067 W EP 0102067W WO 0164393 A1 WO0164393 A1 WO 0164393A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- grinding machine
- container
- rotary drive
- machine according
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
- B24B31/108—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work involving a sectioned bowl, one part of which, e.g. its wall, is stationary and the other part of which is moved, e.g. rotated
-
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
-
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
Definitions
- the invention relates to a grinding machine for grinding workpieces by means of abrasive grains with at least one grinding unit with two parts that can be rotated relative to one another.
- centrifugal gliders which consist of a two-part container with a shell-like rotatable container bottom part forming a bottom and a stationary cylindrical container upper part.
- Such grinding machines are used for the surface processing of material to be ground or workpieces, for example of smaller parts, which are moved in the container together with grinding bodies and, if appropriate, a liquid processing agent. If the lower part is rotated, the workpieces to be treated are moved outwards on the plate until they strike the inner wall of the container, where they are braked. By workpieces that flow downstream result in a circumferential movement of the workpieces, which results in intensive grinding or polishing.
- Grinding machines of this type have hitherto been intended for professional use in production sites for the grinding goods, such as jewelry and other parts to be polished. Accordingly, they are designed and constructed in a complex manner and are correspondingly expensive.
- the invention is based on the object of creating a grinding machine of the generic type which is inexpensive and can therefore be used in other areas, in particular where the grinding goods are sold or by private individuals for polishing jewelry.
- the above-mentioned object is achieved in a grinding machine of the type mentioned at the outset in that a plate is rotatably arranged in a container for receiving material to be grinded, that a rotary drive is arranged on the container below the plate and that the axes of the plate and rotary drive are aligned ,
- This preferred solution makes it possible to make a grinding machine productively simple and inexpensive. This is particularly due to the fact that the plate is non-rotatably connected to the output shaft of the rotary drive. With this preferred solution, it is not necessary to provide an additional bearing for the drive shaft of the turntable in addition to the bearing for the output shaft of the rotary drive, in addition to the bearing for the output shaft of the rotary drive, whether it is a driving motor or a geared motor with an integrated motor and integrated gear. In a preferred embodiment, it is further provided that the plate is connected to the output shaft of the rotary drive via a coupling piece, in particular the coupling - *> has aligned holes that protrude from the output shaft of the rotary drive and a centering pin of the plate.
- the coupling piece and output shafts are non-rotatably connected to each other by a radial clamping screw, and that the turntable and the coupling piece are rotatably connected to each other by means of screws.
- a further development is characterized by the dust and / or liquid-tight passage of the drive of the plate through the bottom of the container, the coupling piece being held axially firmly in containers, in particular by Simmerrings; this creates an optimal seal.
- the plate is not completely flat, but may have an edge that runs over its base. With this, depending on the design of its material and the material of the container wall, it can have a stand or be printed against the edge under centrifugal force. In any case, the plate has a finite distance from the bottom to the bottom of the container. It can be provided that the size of the lateral radial gap, if there is one, is smaller than the axial distance of the plate from the container bottom. This ensures that only particles that are significantly smaller than the distance of the plate from the floor can get under the plate. In particular when the grinding machine according to the invention is designed as a liquid grinding machine with a liquid processing agent contained in the container, it can be provided in a preferred embodiment that the entire plate is rigid.
- the width or thickness of the gap is at least 1/10 mm, which should generally not exceed 2 mm. It has surprisingly been found that in the case of a centrifugal centrifugal grinding machine according to the invention with the liquid in the container, it is expelled from the gap between the rotatable plate and the bottom of the stationary container and there is no liquid there. This prevents sanding material, including broken-off fractions of larger abrasive particles, from getting into this area and thus adversely affecting the mounting of the plate or the drive axis of the plate which is guided through the floor to the outside.
- Abrasive grains or fractions thereof or expelling them from the gap between the rotatable plate and the stationary base can be achieved in a dry centrifugal grinding machine, i.e. a dry grinding machine, in that the plate has flexible material at least on its underside.
- This design of the plate according to the invention also ensures that if a particle of abrasive material or material to be grind enters the gap, this is only required to the outside by the relative rotary movement between the plate and the bottom of the container, but no wear occurs due to the flexibility of the plate or its underside and in particular it prevents the storage of the plate from being impaired.
- the invention enables the construction of very inexpensive and reliable centrifugal centrifugal grinding machines, which also allow the use of very fine grinding and / or polishing bodies.
- a drive axis of the grinding plate is guided liquid-tight through the bottom of the container.
- the plate or the covering on its underside can consist, for example, of an elastomeric plastic and in particular rubber, but also of felt, cotton fabric or a normally flexible floor covering, such as PVC floor covering, carpeting of any kind.
- the plate has an upwardly drawn peripheral edge.
- the plate has a flat floor over most of its surface; only the edge is raised approximately, so that a circumferential edge protruding beyond the plate base is provided thereon.
- the gap due to the low susceptibility to wear of the centrifugal force grinding machine according to the invention associated with the flexible plate, can in particular also be larger than that be minimal dimensions of the grinding or polishing body particles, but it remains in the same order of magnitude, in particular should not be more than twice or three times, so that these migrate under the plate during operation of the grinding machine and due to loose the relative movement of the flexible rotating plate with respect to the container bottom and can be transported radially outward direction of the container wall.
- the gap should also be very small.
- the width b of the gap is preferably at least 2 mm and most preferably approximately between 3 and 4 mm.
- the gap width can in particular also be variable in order to adapt the gap to the granulate used.
- the gap can be adjusted by any known means, for example by means of washers or the like which can be inserted between the bottom of the container and the plate.
- the gap can also, for example, over
- Adjusting screws can be adjustable, by means of which a shaft passing through the container base for supporting the flexible plate can be adjusted in height and fixed at a desired height.
- a further preferred embodiment is characterized in that a closable outlet is provided below the plate in the bottom of the container.
- the housing is in one piece, in particular the housing and / or the container made of plastic.
- a grinder according to the invention can in particular for
- Dry polishing of jewelry, dental parts etc. can be used.
- the grinding machine 1 has a one- or two-tier housing 2 'with a container 2 and a base 2'', the container 2 and the base 2''possibly forming part of the two-part housing 2'.
- the housing is preferably made of plastic, in particular also the container 2.
- a plate 3 is arranged in the container 2.
- the plate 3 has a circumferential edge 3a drawn obliquely upwards, the outer wall of which follows the contour of the container 2 in this area.
- Such is radially between the plate 3 and Figures 2a is a finite distance 5 of the Large formed Behalterbo ⁇ b, which has substantially the same size over the entire plate surface.
- the plate rim 3a pulled upwards creates a bowl-shaped receptacle for the grinding material.
- a rotary drive 11 for the plate 3 is arranged in the base 2 ′′ below the plate 3.
- the rotary drive can be a plate 3 directly driving motor or a gear motor with an integrated gear.
- Rotary drive 11 has an output shaft 12 directed vertically upwards.
- the rotary drive 11 is fixed by means of screw connections 13 directed parallel to the shaft 12 via a mounting plate 14 on the housing 2 '.
- a coupling piece 15 In a bore of the housing 2 'between the foot 2a and the container 2 there is a coupling piece 15, by means of which the plate 3 is connected in a rotationally fixed manner to the output shaft 12 of the drive 11.
- the coupling piece 15 has bores 15a, 15b.
- the output shaft 12 of the drive 11 projects into the bore 15a.
- a radial clamping screw 16 is provided for the rotationally fixed connection.
- a centering pin 17 protrudes into the bore 15b and is firmly connected to the plate 3.
- a rotationally fixed connection between the plate 3 is produced by screws 18 engaging in the coupling piece 15 parallel to the centering pin 17.
- the axis A of plate 3 and rotary drive 11 are aligned.
- the holes 15a, 15b can also be a through hole.
- Below the coupling piece 15, the output shaft 16 of the rotary drive 11 is surrounded by a centering 19.
- a hardened ring 21 is firmly connected to it.
- Coupling piece 15 is held axially in the housing 2 'by Simmerrings 22.
- the plate can be rigid when working with liquid in the container. Basically, however, the plate - for wet and dry processing - consists of a flexible material, such as rubber or plastic. As mentioned, the plate is spaced from the container bottom 2a to form a gap 5, the gap width b being for example in dry machining is about 3 mm.
- the plate 3 and / or the container 2 can, for example, be arranged in a height-adjustable manner by varying the gap width.
- the comparatively wide gap enables the small particles of the grinding material or, in particular, the grinding body between the plate and the container bottom, which, due to the rotating, flexible plates, are required again in the direction of the container wall 2b without any significant wear on the container bottom 2a or plate 3 occurs.
- a closable outlet 23 can be provided laterally in the bottom 2a of the container 2 for draining liquid and also expelling it before the material still located there is finished.
- Container 'housing' 'base a bottom (of 2) b container wall
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/220,189 US20030119430A1 (en) | 2000-02-29 | 2001-02-23 | Grinding machine |
EP01913832A EP1259354A1 (en) | 2000-02-29 | 2001-02-23 | Grinding machine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EPPCT/EP00/01675 | 2000-02-29 | ||
PCT/EP2000/001675 WO2000056501A1 (en) | 1999-03-19 | 2000-02-29 | Grinding machine |
DE20007611U DE20007611U1 (en) | 2000-04-27 | 2000-04-27 | Grinding machine |
DE20007611.6 | 2000-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001064393A1 true WO2001064393A1 (en) | 2001-09-07 |
Family
ID=7940761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/002067 WO2001064393A1 (en) | 2000-02-29 | 2001-02-23 | Grinding machine |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030119430A1 (en) |
DE (1) | DE20007611U1 (en) |
WO (1) | WO2001064393A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112917317B (en) * | 2020-02-21 | 2022-09-02 | 苏州市东挺河智能科技发展有限公司 | External rotary type grinding device for machining ornaments |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884372A (en) * | 1987-10-06 | 1989-12-05 | Roto-Finish Company, Inc. | Centrifugal finishing apparatus embodying improved seal and method |
US5119597A (en) * | 1990-08-28 | 1992-06-09 | The Grav-I-Flo Corporation | Centrifugal disk finishing apparatus |
AT178U1 (en) * | 1991-09-24 | 1995-04-25 | Johann Tauss Ges M B H Johann | MACHINE FOR GRINDING |
EP0860236A2 (en) * | 1997-02-19 | 1998-08-26 | Helmut Gegenheimer | Centrifugal polishing machine |
US5989109A (en) * | 1996-07-03 | 1999-11-23 | Tipton Corp | Seal protecting method for use with spiral-flow barrel finishing machine and spiral-flow barrel finishing machine with seal protecting apparatus |
DE19912348A1 (en) * | 1999-03-19 | 2000-09-28 | Gegenheimer Helmut | Grinding machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3570192A (en) * | 1969-02-24 | 1971-03-16 | Ultramatic Equipment Co | Vibratory finishing machine having generally circular bowl |
-
2000
- 2000-04-27 DE DE20007611U patent/DE20007611U1/en not_active Expired - Lifetime
-
2001
- 2001-02-23 WO PCT/EP2001/002067 patent/WO2001064393A1/en not_active Application Discontinuation
- 2001-02-23 US US10/220,189 patent/US20030119430A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884372A (en) * | 1987-10-06 | 1989-12-05 | Roto-Finish Company, Inc. | Centrifugal finishing apparatus embodying improved seal and method |
US5119597A (en) * | 1990-08-28 | 1992-06-09 | The Grav-I-Flo Corporation | Centrifugal disk finishing apparatus |
AT178U1 (en) * | 1991-09-24 | 1995-04-25 | Johann Tauss Ges M B H Johann | MACHINE FOR GRINDING |
US5989109A (en) * | 1996-07-03 | 1999-11-23 | Tipton Corp | Seal protecting method for use with spiral-flow barrel finishing machine and spiral-flow barrel finishing machine with seal protecting apparatus |
EP0860236A2 (en) * | 1997-02-19 | 1998-08-26 | Helmut Gegenheimer | Centrifugal polishing machine |
DE19912348A1 (en) * | 1999-03-19 | 2000-09-28 | Gegenheimer Helmut | Grinding machine |
Also Published As
Publication number | Publication date |
---|---|
DE20007611U1 (en) | 2001-06-07 |
US20030119430A1 (en) | 2003-06-26 |
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