US20090145700A1 - Fast braking device for grinding machine - Google Patents
Fast braking device for grinding machine Download PDFInfo
- Publication number
- US20090145700A1 US20090145700A1 US11/951,883 US95188307A US2009145700A1 US 20090145700 A1 US20090145700 A1 US 20090145700A1 US 95188307 A US95188307 A US 95188307A US 2009145700 A1 US2009145700 A1 US 2009145700A1
- Authority
- US
- United States
- Prior art keywords
- braking disc
- grinding machine
- electromagnet element
- disc
- spindle
- 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.)
- Abandoned
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
-
- 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
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Definitions
- the present invention relates to a grinding machine, particularly to a fast braking device for the spindle of a grinding machine.
- Grinding machines are common tools in works.
- a grinding machine is generally used intermittently. Thus, a grinding machine is often started and shut off.
- the duration from shutting off the power of a full-operation grinding machine to completely halting the grinding machine is an appreciable interval of time, and danger is likely to occur in the interval.
- a braking rod is pressed on the spindle of a grinding machine to rub the spindle and consume the dynamic energy of the spindle so that the rotation of the grinding machine can stop as soon as possible.
- the primary objective of the present invention is to provide a braking device to fast stop the operation of a grinding machine.
- the present invention proposes a fast braking device for a grinding machine, which is installed in a grinding machine with a spindle and comprises: an electromagnet element, an inner braking disc, a lining plate, an outer braking disc and a plurality of elastic elements.
- the electromagnet element is fixed on the grinding machine.
- the inner braking disc closely neighbors the electromagnet element and is fixed together with the electromagnet element.
- the lining plate is arranged outside the inner braking disc and rotates synchronously with the spindle.
- the outer braking disc is separated from the electromagnet element by the lining plate and axially slidably installed on the electromagnet element.
- the electromagnet element provides magnetic force to make the inner braking disc and the outer braking disc clamp the lining plate.
- the elastic elements are arranged in between the inner braking disc and the outer braking disc.
- the elastic force of the elastic elements is less than the magnetic force of the electromagnet element.
- the elastic elements can separate the outer braking disc from the inner braking disc lest the outer braking disc and the inner braking disc clamp the lining plate during the operation of the grinding machine.
- the electromagnet element provides magnetic force to make the inner braking disc and the outer braking disc clamp the lining plate to fast brake the grinding machine.
- FIG. 1 is a diagram schematically showing the structure of the device according to the present invention.
- FIG. 2 is an exploded view of the structure of the device according to the present invention.
- FIG. 3A is a diagram schematically showing the non-braking state of the device according to the present invention.
- FIG. 3B is a diagram schematically showing the braking state of the device according to the present invention.
- the fast braking device of the present invention is installed in a grinding machine 10 having a spindle 11 and comprises: an electromagnet element 20 , an inner braking disc 30 , a lining plate 40 , an outer braking disc 50 and a plurality of elastic elements 60 .
- the electromagnet element 20 is fixed on the grinding machine 10 .
- the inner braking disc 30 closely neighbors the electromagnet element 20 and is fixed on the electromagnet element 20 .
- the inner braking disc 30 may be fastened to the electromagnet element 20 with hollow screws 32 .
- the electromagnet element 20 and inner braking disc 30 respectively have central through-holes 21 and 31 , and the spindle 11 passes through the central through-holes 21 and 31 .
- the lining plate 40 is arranged outside the inner braking disc 30 and rotates synchronously with the spindle 11 .
- the lining plate 40 has a rectangular central infix hole 41
- the spindle 11 has a rectangular infix block 12 corresponding to the rectangular central infix hole 41 .
- the infix block 12 is infixed into the central infix hole 41 , and the lining plate 40 is thus driven to rotate synchronously with the spindle 11 .
- the outer braking disc 50 is separated from the electromagnet element 20 by the lining plate 40 and axially slidably installed on the electromagnet element 20 .
- the outer braking disc 50 is fastened to the electromagnet element 20 via inserting screws 52 through the hollow screws 32 and screwing the screws 52 into the electromagnet element 20 .
- the outer braking disc 50 has a central through-hole 51 , and the spindle 11 passes through the central through-hole 51 .
- the outer braking disc 50 can be attracted by the electromagnet element 20 , and the outer and inner braking disc 50 and 30 can thus clamp two sides of the lining plate 40 .
- the elastic elements 60 are arranged in between the inner braking disc 30 and the outer braking disc 50 , and the elastic elements 60 are uniformly arranged along the rims of the inner braking disc 30 and the outer braking disc 50 . Further, the elastic force of the elastic elements 60 is less than the magnetic force of the electromagnet element 20 . The elastic elements 60 can separate the outer braking disc 50 from the inner braking disc 30 when the electromagnet element 20 does not provide magnetic force.
- the present invention is not required to brake the grinding machine 10 , and the electromagnet element 20 does not provide magnetic force.
- the inner braking disc 30 and the outer braking disc 50 will not clamp the lining plate 40 but are separated by the elastic elements 60 . Then, the spindle can free rotate without interference.
- the electromagnet element 20 provides magnetic force.
- the outer braking disc 50 is attracted toward the inner braking disc 30 .
- the inner braking disc 30 and the outer braking disc 50 clamp the lining plate 40 to fast brake the spindle 11 of the grinding machine 10 .
- the electromagnet element 20 provides magnetic force to make the outer braking disc 50 and the inner braking disc 30 clamp the lining plate 40 and fast brake the spindle 11 . Therefore, the present invention can fast brake the grinding machine 10 and satisfy the requirement of users.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A fast braking device for a grinding machine installed in a grinding machine with a spindle comprises: an electromagnet element closely neighbors an inner braking disc; the electromagnet element and the inner braking disc are jointly fixed on the grinding machine. An outer braking disc is separated from the electromagnet element by a lining plate and axially slidably installed on the electromagnet element. Elastic elements are arranged in between the inner braking disc and the outer braking disc. The lining plate rotates synchronously with the spindle. When the user intends to stop the operation of the grinding machine, the electromagnet element provides magnetic force to make the inner and the outer braking discs clamp the lining plate to fast brake the spindle of the grinding machine. Then, the elastic elements separate the outer braking disc from the inner braking disc, and the spindle of the grinding machine can rotate again.
Description
- The present invention relates to a grinding machine, particularly to a fast braking device for the spindle of a grinding machine.
- Grinding machines are common tools in works. A grinding machine is generally used intermittently. Thus, a grinding machine is often started and shut off. The duration from shutting off the power of a full-operation grinding machine to completely halting the grinding machine is an appreciable interval of time, and danger is likely to occur in the interval.
- Traditionally, a braking rod is pressed on the spindle of a grinding machine to rub the spindle and consume the dynamic energy of the spindle so that the rotation of the grinding machine can stop as soon as possible.
- However, the user has to manually press the braking rod onto the spindle in the conventional method, and the time to completely halt the grinding machine correlates with the applied force. Therefore, the conventional method is inconvenient and unreliable.
- The primary objective of the present invention is to provide a braking device to fast stop the operation of a grinding machine.
- To achieve the abovementioned objective, the present invention proposes a fast braking device for a grinding machine, which is installed in a grinding machine with a spindle and comprises: an electromagnet element, an inner braking disc, a lining plate, an outer braking disc and a plurality of elastic elements. The electromagnet element is fixed on the grinding machine. The inner braking disc closely neighbors the electromagnet element and is fixed together with the electromagnet element. The lining plate is arranged outside the inner braking disc and rotates synchronously with the spindle. The outer braking disc is separated from the electromagnet element by the lining plate and axially slidably installed on the electromagnet element. The electromagnet element provides magnetic force to make the inner braking disc and the outer braking disc clamp the lining plate. The elastic elements are arranged in between the inner braking disc and the outer braking disc. The elastic force of the elastic elements is less than the magnetic force of the electromagnet element. The elastic elements can separate the outer braking disc from the inner braking disc lest the outer braking disc and the inner braking disc clamp the lining plate during the operation of the grinding machine.
- Whether the outer braking disc and the inner braking disc clamp the lining plate is determined by the elastic force of the elastic elements and the magnetic force of the electromagnet element. When the user intends to stop the operation of the grinding machine, the electromagnet element provides magnetic force to make the inner braking disc and the outer braking disc clamp the lining plate to fast brake the grinding machine.
-
FIG. 1 is a diagram schematically showing the structure of the device according to the present invention. -
FIG. 2 is an exploded view of the structure of the device according to the present invention. -
FIG. 3A is a diagram schematically showing the non-braking state of the device according to the present invention. -
FIG. 3B is a diagram schematically showing the braking state of the device according to the present invention. - Below, the preferred embodiments are described in detail in cooperation with drawings to make easily understood the objectives, characteristics, and accomplishments of the present invention.
- Refer to
FIG. 1 andFIG. 2 . The fast braking device of the present invention is installed in agrinding machine 10 having aspindle 11 and comprises: anelectromagnet element 20, aninner braking disc 30, alining plate 40, anouter braking disc 50 and a plurality ofelastic elements 60. Theelectromagnet element 20 is fixed on thegrinding machine 10. Theinner braking disc 30 closely neighbors theelectromagnet element 20 and is fixed on theelectromagnet element 20. Theinner braking disc 30 may be fastened to theelectromagnet element 20 withhollow screws 32. Theelectromagnet element 20 andinner braking disc 30 respectively have central through-holes 21 and 31, and thespindle 11 passes through the central through-holes 21 and 31. - The
lining plate 40 is arranged outside theinner braking disc 30 and rotates synchronously with thespindle 11. Thelining plate 40 has a rectangular central infix hole 41, and thespindle 11 has arectangular infix block 12 corresponding to the rectangular central infix hole 41. Theinfix block 12 is infixed into the central infix hole 41, and thelining plate 40 is thus driven to rotate synchronously with thespindle 11. - The
outer braking disc 50 is separated from theelectromagnet element 20 by thelining plate 40 and axially slidably installed on theelectromagnet element 20. Theouter braking disc 50 is fastened to theelectromagnet element 20 viainserting screws 52 through thehollow screws 32 and screwing thescrews 52 into theelectromagnet element 20. Theouter braking disc 50 has a central through-hole 51, and thespindle 11 passes through the central through-hole 51. Theouter braking disc 50 can be attracted by theelectromagnet element 20, and the outer andinner braking disc lining plate 40. Theelastic elements 60 are arranged in between theinner braking disc 30 and theouter braking disc 50, and theelastic elements 60 are uniformly arranged along the rims of theinner braking disc 30 and theouter braking disc 50. Further, the elastic force of theelastic elements 60 is less than the magnetic force of theelectromagnet element 20. Theelastic elements 60 can separate theouter braking disc 50 from theinner braking disc 30 when theelectromagnet element 20 does not provide magnetic force. - Refer to
FIG. 3A . When thegrinding machine 10 is in use, the present invention is not required to brake thegrinding machine 10, and theelectromagnet element 20 does not provide magnetic force. Thus, theinner braking disc 30 and theouter braking disc 50 will not clamp thelining plate 40 but are separated by theelastic elements 60. Then, the spindle can free rotate without interference. - Refer to
FIG. 3B . When the user intends to stop the operation of thegrinding machine 10, theelectromagnet element 20 provides magnetic force. Thus, theouter braking disc 50 is attracted toward theinner braking disc 30. Then, theinner braking disc 30 and theouter braking disc 50 clamp thelining plate 40 to fast brake thespindle 11 of thegrinding machine 10. - In the present invention, the
electromagnet element 20 provides magnetic force to make theouter braking disc 50 and theinner braking disc 30 clamp thelining plate 40 and fast brake thespindle 11. Therefore, the present invention can fast brake thegrinding machine 10 and satisfy the requirement of users.
Claims (6)
1. A fast braking device for a grinding machine, which is installed in a grinding machine having a spindle, comprising:
an electromagnet element fixed on said grinding machine;
an inner braking disc closely neighboring said electromagnet element and fixed on said electromagnet element;
a lining plate arranged outside said inner braking disc and rotating synchronously with said spindle;
an outer braking disc separated from said electromagnet element by said lining plate, axially slidably installed on said electromagnet element, attracted by magnetic force of said electromagnet element to approach said inner braking disc, and cooperating with said inner braking disc to clamp two sides of said lining plate; and
a plurality of elastic elements arranged in between said inner braking disc and said outer braking disc, separating said outer braking disc from said inner braking disc, preventing said outer braking disc and said inner braking disc from clamping said lining plate, and having an elastic force less than said magnetic force of said electromagnet element.
2. The fast braking device for the grinding machine according to claim 1 , wherein said lining plate has a rectangular central infix hole, and said spindle has a rectangular infix block corresponding to said rectangular central infix hole, and said infix block is infixed into said central infix hole.
3. The fast braking device for the grinding machine according to claim 1 , wherein said elastic elements are uniformly arranged along the rims of said inner braking disc and said outer braking disc.
4. The fast braking device for the grinding machine according to claim 1 , wherein said inner braking disc, said outer braking disc and said electromagnet element respectively have central through-holes, and said spindle passes through said central through-holes.
5. The fast braking device for the grinding machine according to claim 1 , wherein said inner braking disc is fastened to said electromagnet element with hollow screws.
6. The fast braking device for the grinding machine according to claim 5 , wherein said outer braking disc is fastened to said electromagnet element via inserting screws through said hollow screws and screwing said screws into said electromagnet element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/951,883 US20090145700A1 (en) | 2007-12-06 | 2007-12-06 | Fast braking device for grinding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/951,883 US20090145700A1 (en) | 2007-12-06 | 2007-12-06 | Fast braking device for grinding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090145700A1 true US20090145700A1 (en) | 2009-06-11 |
Family
ID=40720476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/951,883 Abandoned US20090145700A1 (en) | 2007-12-06 | 2007-12-06 | Fast braking device for grinding machine |
Country Status (1)
Country | Link |
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US (1) | US20090145700A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140206264A1 (en) * | 2013-01-21 | 2014-07-24 | Robert Bosch Gmbh | Machine tool brake device |
CN109465698A (en) * | 2018-11-08 | 2019-03-15 | 泉州市泉港区鑫悦盟工业科技有限公司 | A kind of high security door-plate grinding device convenient for safeguarding |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2029862A (en) * | 1935-01-17 | 1936-02-04 | Bendix Brake Co | Electrical disk brake |
US3270265A (en) * | 1963-06-03 | 1966-08-30 | Itt | Electromagnetic friction braking arrangement |
US4170278A (en) * | 1978-04-18 | 1979-10-09 | Schubert Karl P | Electromagnetic brake |
US4430592A (en) * | 1981-08-31 | 1984-02-07 | Tape Research, Inc. | Electromagnetic brake |
US4445596A (en) * | 1981-09-08 | 1984-05-01 | Facet Enterprises, Inc. | Electromagnetically released spring applied friction brake with torque booster and driving force distributor |
US4485594A (en) * | 1982-09-07 | 1984-12-04 | Brown & Sharpe Manufacturing Company | Surface grinding machine |
US4828077A (en) * | 1986-11-06 | 1989-05-09 | Lift-Tech International, Inc. | Solenoid and spring operated brake |
US5497860A (en) * | 1994-08-15 | 1996-03-12 | Venturedyne Limited | Electromagnetic brake with improved magnet structure |
US6116942A (en) * | 1998-05-08 | 2000-09-12 | Hon Hai Precision Ind. Co., Ltd. | Locking device for electrical connector |
US6161659A (en) * | 1998-09-29 | 2000-12-19 | Inertia Dynamics, Inc. | Electromagnetic disk brake with rubber friction disk braking surface |
US6376948B1 (en) * | 2000-03-30 | 2002-04-23 | Chin-Tsang Wang | Motor-synchronous exciting brake |
US6659238B2 (en) * | 2001-05-18 | 2003-12-09 | Oriental Motor Co., Ltd. | Electromagnetic brake |
-
2007
- 2007-12-06 US US11/951,883 patent/US20090145700A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2029862A (en) * | 1935-01-17 | 1936-02-04 | Bendix Brake Co | Electrical disk brake |
US3270265A (en) * | 1963-06-03 | 1966-08-30 | Itt | Electromagnetic friction braking arrangement |
US4170278A (en) * | 1978-04-18 | 1979-10-09 | Schubert Karl P | Electromagnetic brake |
US4430592A (en) * | 1981-08-31 | 1984-02-07 | Tape Research, Inc. | Electromagnetic brake |
US4445596A (en) * | 1981-09-08 | 1984-05-01 | Facet Enterprises, Inc. | Electromagnetically released spring applied friction brake with torque booster and driving force distributor |
US4485594A (en) * | 1982-09-07 | 1984-12-04 | Brown & Sharpe Manufacturing Company | Surface grinding machine |
US4828077A (en) * | 1986-11-06 | 1989-05-09 | Lift-Tech International, Inc. | Solenoid and spring operated brake |
US5497860A (en) * | 1994-08-15 | 1996-03-12 | Venturedyne Limited | Electromagnetic brake with improved magnet structure |
US6116942A (en) * | 1998-05-08 | 2000-09-12 | Hon Hai Precision Ind. Co., Ltd. | Locking device for electrical connector |
US6161659A (en) * | 1998-09-29 | 2000-12-19 | Inertia Dynamics, Inc. | Electromagnetic disk brake with rubber friction disk braking surface |
US6376948B1 (en) * | 2000-03-30 | 2002-04-23 | Chin-Tsang Wang | Motor-synchronous exciting brake |
US6659238B2 (en) * | 2001-05-18 | 2003-12-09 | Oriental Motor Co., Ltd. | Electromagnetic brake |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140206264A1 (en) * | 2013-01-21 | 2014-07-24 | Robert Bosch Gmbh | Machine tool brake device |
US9987716B2 (en) * | 2013-01-21 | 2018-06-05 | Robert Bosch Gmbh | Machine tool brake device |
CN109465698A (en) * | 2018-11-08 | 2019-03-15 | 泉州市泉港区鑫悦盟工业科技有限公司 | A kind of high security door-plate grinding device convenient for safeguarding |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: META INTERNATIONAL CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIN, WEN-SAN;REEL/FRAME:020456/0140 Effective date: 20071123 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |