US2033034A - Grinding and polishing device - Google Patents
Grinding and polishing device Download PDFInfo
- Publication number
- US2033034A US2033034A US653154A US65315433A US2033034A US 2033034 A US2033034 A US 2033034A US 653154 A US653154 A US 653154A US 65315433 A US65315433 A US 65315433A US 2033034 A US2033034 A US 2033034A
- Authority
- US
- United States
- Prior art keywords
- grinding
- tools
- supporting element
- polishing
- tool
- 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.)
- Expired - Lifetime
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on plane surfaces
- B24B41/053—Grinding heads for working on plane surfaces for grinding or polishing glass
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
Definitions
- the object .of the present invention is a device relating to grinding and polishing of flat surfaces, more especially in the manufacture of plate glass.
- the grinding and polishing tools machine the surfaces to be ground and polished under a very low pressure-contrary to pressures hitherto customaryfurther, the grinding and polishing tools run at a high relative speed between tool and workpiece-contrary to speeds customary at present.
- a certain number of these tools six for example, suitably grouped in a circle, are, either in their totality or singly, supported in bearings of vertical direction in which they rotate carefully balanced by means of counterweights or other suitable means, so as to permit the working pressure to be adjusted within the finest limits.
- the supporting element of the device around which are fixed the rotating tools with their driving devices etc. is supported, at a portion above these parts, in a sleeve bearing of larger diameter within the fixed frame of the device and rotates within this sleeve bearing, preferably driven by means of a worm wheel, comparatively more slowly around the vertical axis.
- the whole supporting element is at the same time arranged vertically slideable within the sleeve bearing and suspended with its upper extension from a bearing ring which is supported. by a balancing lever with counterweight.
- Fig. 1 a side view of the device with portions shown in section.
- Fig. 2 a section through a portion of the device below the sleeve bearing showing the top portion of the tools or their driving and supporting organs respectively.
- the stationary girders I and 2 carry the supporting frame 3 of the device.
- the supporting element 6 which carries the tools and their driving devices.
- Said supporting element is driven by a worm wheel 1 which is driven in its turn by worm 8.
- a ring I ll, fitted with ball bearing 9, is mounted to that end of said supporting element which protrudes from sleeve bearing 5.
- Said ring III is suspended by means of suspension device II from a balancing lever I2.
- the adjustable counterweight (not shown in the drawing) is fitted to the left end of said balancing lever which is articulated on the fixed member I3.
- Worm wheel I which drives the supporting element is fixed to a cylindrical bush I4 connected slideable but not rotatory to the long journal of supporting element Ii.
- Slide rings I6 for the electric current admission to the motors may be arranged at the upper end I5 of the rotatory bush I4.
- Fig. 2 of the drawings shows clearly the arrangement of the various tools with their driving and suspension devices around the lower cylindrical portion of the supporting element.
- motor housings H are fixed immediately to the supporting element 6 by means of bolts and lashes.
- each motor carries at its lower end a grinding or polishing tool I9 respectively, whilst the upper end of said shaft is suspended from balancing lever 22 by means of ball race 2!] and suspension device 2
- Said balancing lever is weighted at its outer free end by changeable weights 23.
- Grinding substance may be admitted through hollow shafts I8. To prevent the danger of corrosion by grinding substance coming into direct contact with said shafts it is advisable to provide tube 24 made from special non-rusting material which is widened at its upper end to serve as funnel. Grinding substance is admitted from above through pipes 25. These pipes run through the hollow journal of supporting element 6 being connected with a distributing chamber 26 arranged at the uppermost portion of said supporting element. The distributing chamber is fed with grinding substance from above through a pipe of suitable diameter.
- a device for grinding and polishing flat surfaces, more especially in the manufacture of plate glass including a frame mounted in a fixed position above the work, a support in the form of a. hollow tubular member mounted for rotatable and vertically slidable movement in the frame, a plurality of operating tools on the support, means for rotating the support with the tools thereon, means for adjusting the vertical position of the support as well as the tools, means for rotating the tools independently of the means for rotating the support including a stator, a rotor including a hollow shaft forming the spindle of the tool and vertically slidable relative to the stator, and means for individually adjusting the tools including a series of variable counterbalanced levers operably mounted on the support and operably connected to the upper ends of the shafts.
- heads are fixed on the lower ends of the hollow shafts and together with the shafts form tools of relatively small weight to ensure of an easy movement of the tools in a vertical direction.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
March 3, 1936. A. KNAFF GRINDING AND POLISHING DEVICE Filed Jan. 23, 1933 2 Sheets-Sheet l March 3, 1936.
A. KQAFF 2,033,03
,GRINDING AND POLISHING DEVICE Filed Jan. 25, 1953 2 Sheets-Sheet 2 1 34W Elf 6 INVeNTORL,
y man/1M I Patented Mar. 3, 1936 UNITE STATS Application January 23, 1933, Serial No. 653,154 In Germany January 23, 1932 4 Claims.
'The object .of the present invention is a device relating to grinding and polishing of flat surfaces, more especially in the manufacture of plate glass.
.In accordance with this method the grinding and polishing tools machine the surfaces to be ground and polished under a very low pressure-contrary to pressures hitherto customaryfurther, the grinding and polishing tools run at a high relative speed between tool and workpiece-contrary to speeds customary at present. By this same method afore described ways of operating may both be applied in conjunction and simultaneously.
The grinding and polishing device which forms the object of the present invention comprises a system of rotary grinding and polishing elements respectively suspended, for the purpose of dealing with the work-piece, in a suitable manner, for example from stationary girders. A certain number of these tools, six for example, suitably grouped in a circle, are, either in their totality or singly, supported in bearings of vertical direction in which they rotate carefully balanced by means of counterweights or other suitable means, so as to permit the working pressure to be adjusted within the finest limits.
Each single tool as well as the whole system of tools rotate around their vertical axes, each single tool very rapidly, the whole system at a lower speed, according to the special requirements of the work-piece to be dealt with.
Special advantage ofiers the independent driving of each single grinding tool by means of an electro-motor with vertical shaft in which case the grinding tool may be mounted on the lower portion of this hollow shaft which is connected with the armature of the motor. This hollow shaft is suspended with its upper portion from a ring supported by ball bearings, the ring in its turn being suspended from a balanced lever carrying counterweights. Through said hollow shaft grinding substance may be admitted to the grinding tool and the place to be ground.
The supporting element of the device around which are fixed the rotating tools with their driving devices etc. is supported, at a portion above these parts, in a sleeve bearing of larger diameter within the fixed frame of the device and rotates within this sleeve bearing, preferably driven by means of a worm wheel, comparatively more slowly around the vertical axis. The whole supporting element is at the same time arranged vertically slideable within the sleeve bearing and suspended with its upper extension from a bearing ring which is supported. by a balancing lever with counterweight.
In the accompanying drawings is:-
Fig. 1, a side view of the device with portions shown in section.
Fig. 2, a section through a portion of the device below the sleeve bearing showing the top portion of the tools or their driving and supporting organs respectively.
The stationary girders I and 2 carry the supporting frame 3 of the device. On said frame are arranged the lower sleeve bearing 4 and an upper sleeve bearing 5. Within these sleeve bearings 4 and 5 rotates and slides the supporting element 6 which carries the tools and their driving devices. Said supporting element is driven by a worm wheel 1 which is driven in its turn by worm 8. A ring I ll, fitted with ball bearing 9, is mounted to that end of said supporting element which protrudes from sleeve bearing 5. Said ring III is suspended by means of suspension device II from a balancing lever I2. The adjustable counterweight (not shown in the drawing) is fitted to the left end of said balancing lever which is articulated on the fixed member I3.
Worm wheel I which drives the supporting element is fixed to a cylindrical bush I4 connected slideable but not rotatory to the long journal of supporting element Ii. Slide rings I6 for the electric current admission to the motors may be arranged at the upper end I5 of the rotatory bush I4.
Fig. 2 of the drawings shows clearly the arrangement of the various tools with their driving and suspension devices around the lower cylindrical portion of the supporting element.
In the case of electrically driven tools motor housings H are fixed immediately to the supporting element 6 by means of bolts and lashes.
The vertical shaft I8 of each motor carries at its lower end a grinding or polishing tool I9 respectively, whilst the upper end of said shaft is suspended from balancing lever 22 by means of ball race 2!] and suspension device 2|. Said balancing lever is weighted at its outer free end by changeable weights 23.
Grinding substance may be admitted through hollow shafts I8. To prevent the danger of corrosion by grinding substance coming into direct contact with said shafts it is advisable to provide tube 24 made from special non-rusting material which is widened at its upper end to serve as funnel. Grinding substance is admitted from above through pipes 25. These pipes run through the hollow journal of supporting element 6 being connected with a distributing chamber 26 arranged at the uppermost portion of said supporting element. The distributing chamber is fed with grinding substance from above through a pipe of suitable diameter.
In the case of the device being constructed with non-sliding grinding shafts instead of ver-' tically slideable shafts the suspension devices and counterweights are omitted. In that case all tools can only be moved upwards and downwards conjointly with the supporting element or adjusted as to pressure effect. The possibility, however, of adjusting and balancing each single tool independently from the others ensures a much more minute regulating of the pressure.
The various details of the device may, of course, deviate more or less from the example shown in the accompanying drawings without influence on the nature of the present invention.
I claim:
1. A device for grinding and polishing flat surfaces, more especially in the manufacture of plate glass including a frame mounted in a fixed position above the work, a support in the form of a. hollow tubular member mounted for rotatable and vertically slidable movement in the frame, a plurality of operating tools on the support, means for rotating the support with the tools thereon, means for adjusting the vertical position of the support as well as the tools, means for rotating the tools independently of the means for rotating the support including a stator, a rotor including a hollow shaft forming the spindle of the tool and vertically slidable relative to the stator, and means for individually adjusting the tools including a series of variable counterbalanced levers operably mounted on the support and operably connected to the upper ends of the shafts.
' '2. A device as claimed in claim 1, wherein a the rotor operates at any height within the stator 20 and can thereby be adjusted at any desired height.
4. A device as claimed in claim 1, wherein heads are fixed on the lower ends of the hollow shafts and together with the shafts form tools of relatively small weight to ensure of an easy movement of the tools in a vertical direction.
ALBERT KNAFF.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2033034X | 1932-01-23 | ||
DES102899D DE655502C (en) | 1932-01-23 | 1932-01-24 | Device for grinding and polishing flat surfaces, in particular mirror glass |
Publications (1)
Publication Number | Publication Date |
---|---|
US2033034A true US2033034A (en) | 1936-03-03 |
Family
ID=25998393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US653154A Expired - Lifetime US2033034A (en) | 1932-01-23 | 1933-01-23 | Grinding and polishing device |
Country Status (3)
Country | Link |
---|---|
US (1) | US2033034A (en) |
BE (1) | BE431049A (en) |
DE (1) | DE655502C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874123A (en) * | 1973-10-11 | 1975-04-01 | Mwa Company | Metal conditioning planetary grinder |
US4018012A (en) * | 1973-10-11 | 1977-04-19 | Mwa Company | Method of grinding metal billets, blooms or slabs |
US4665658A (en) * | 1984-05-21 | 1987-05-19 | Commissariat A L'energie Atomique | Double face abrading machine and device for transmitting current and fluid between a rotary structure and a non-rotary structure |
US20150087205A1 (en) * | 2013-09-24 | 2015-03-26 | Stmicroelectronics, Inc. | Adaptive uniform polishing system |
CN113618620A (en) * | 2021-09-07 | 2021-11-09 | 玉溪精工数控机床有限公司 | Special frock of numerical control lathe headstock shovel scraped surface grinding |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1048183B (en) * | 1951-05-19 | 1958-12-31 | Glaceries De La Sambre Sa | Device for supplying the grinding or polishing agent in double-sided glass grinding and / or polishing machines |
DE1216152B (en) * | 1960-06-04 | 1966-05-05 | Raymond Cherreau | Machine for grinding or polishing the surfaces of natural and artificial stone slabs |
-
0
- BE BE431049D patent/BE431049A/xx unknown
-
1932
- 1932-01-24 DE DES102899D patent/DE655502C/en not_active Expired
-
1933
- 1933-01-23 US US653154A patent/US2033034A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874123A (en) * | 1973-10-11 | 1975-04-01 | Mwa Company | Metal conditioning planetary grinder |
US4018012A (en) * | 1973-10-11 | 1977-04-19 | Mwa Company | Method of grinding metal billets, blooms or slabs |
US4665658A (en) * | 1984-05-21 | 1987-05-19 | Commissariat A L'energie Atomique | Double face abrading machine and device for transmitting current and fluid between a rotary structure and a non-rotary structure |
US20150087205A1 (en) * | 2013-09-24 | 2015-03-26 | Stmicroelectronics, Inc. | Adaptive uniform polishing system |
US9162339B2 (en) * | 2013-09-24 | 2015-10-20 | Stmicroelectronics, Inc. | Adaptive uniform polishing system |
CN113618620A (en) * | 2021-09-07 | 2021-11-09 | 玉溪精工数控机床有限公司 | Special frock of numerical control lathe headstock shovel scraped surface grinding |
Also Published As
Publication number | Publication date |
---|---|
DE655502C (en) | 1938-01-17 |
BE431049A (en) |
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