CN109434574B - A fixture for grinding circular scissors - Google Patents
A fixture for grinding circular scissors Download PDFInfo
- Publication number
- CN109434574B CN109434574B CN201811348019.XA CN201811348019A CN109434574B CN 109434574 B CN109434574 B CN 109434574B CN 201811348019 A CN201811348019 A CN 201811348019A CN 109434574 B CN109434574 B CN 109434574B
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- China
- Prior art keywords
- mandrel
- screw
- sleeve
- movable sleeve
- locking nut
- Prior art date
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- 125000006850 spacer group Chemical group 0.000 claims abstract 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention relates to a clamp for grinding disc shears, which comprises a mandrel, a spacer bush, a screw rod and a locking nut, wherein a shaft shoulder is arranged on the outer circumferential surface of the mandrel, an adjusting groove which passes through the mandrel shaft axis and penetrates through the mandrel is arranged on the mandrel along the direction of the mandrel shaft axis, the spacer bush is movably sleeved on the mandrel, the screw rod is arranged at one end of the spacer bush, which is far away from the shaft shoulder, and is positioned in the adjusting groove, both ends of the screw rod extend out of the adjusting groove and are respectively screwed with the locking nut, and the locking nut is clamped in the adjusting groove when being screwed on a bolt to be tightly adhered to the mandrel. The clamping device has the beneficial effects that when the number of the disc shears is changed, clamping of the disc shears with different numbers can be realized by changing the positions of the screw rods in the adjusting grooves, so that the clamping device is better in flexibility and more convenient.
Description
Technical Field
The invention relates to the field of auxiliary equipment for steel belt production, in particular to a clamp for repairing and grinding disc scissors.
Background
In the production of cold-rolled steel strips, in order to meet the delivery width required by customers, hot-rolled rolls with wider sizes delivered in rolls are usually divided into narrow steel strips with different specification widths for pickling and rolling, wherein the disc shears on a longitudinal shearing production line bear the main shearing function. In the production process, an important factor is that the cutting edge of the disc scissors can be dulled after the disc scissors are used for many times, and the defects such as tipping and the like can be generated sometimes, if the worn disc scissors are used continuously, the quality of the edge part of the steel belt of the split scissors is poor, burrs are large, and the deep processing of the subsequent process cannot be carried out.
In order to ensure that the disc shears can continue cutting and service, the whole set of disc shears is required to be polished to ensure the sharpness of the cutting edges of the cutters, the disc shears are usually used in a plurality of groups (determined according to the number of the strips), and in order to ensure the consistency of the outer circle sizes of each disc shear, the blades used in the same group are required to be positioned and fixed on a clamp for polishing the disc shears through inner holes, and the disc shears can be polished by a cylindrical grinder in a state when the simulated blade is used for cutting.
The conventional clamp for grinding disc shears is shown in fig. 1, and comprises a mandrel 1, a spacer bush 2 and a locking nut 4, wherein a first extension column 130 and a second extension column 140 are respectively arranged at two ends of the mandrel 1, conical holes matched with tips on a grinding machine are respectively arranged on the end face of the first extension column 130 and the end face of the second extension column 140, a shaft shoulder 110 is arranged on the outer circumferential surface of one end of the mandrel 1, an external thread matched with the locking nut 4 is arranged at one end of the mandrel 1, which is far away from the shaft shoulder 110, of the mandrel 1, the locking nut 4 is screwed on one end of the mandrel 1, which is far away from the shaft shoulder 110, the spacer bush 2 is sleeved on the mandrel 1, the diameter of the mandrel 1 is equal to the inner diameter of a disc shears 5to be ground, and a guide key 6 is arranged between the disc shears 5 and the mandrel 1 for realizing inner hole positioning. When the disc shears 5to be sharpened are assembled on the disc shears sharpening fixture, the disc shears 5 are positioned on the mandrel 1, and then at least one spacer 2 (the specific number is determined according to the number of the disc shears) is sleeved on the mandrel 1 between the disc shears 5 and the locking nuts 4, and the locking nuts 4 are rotated so that the disc shears 5 are compressed between the spacer 2 and the shaft shoulders 110. When the clamp for grinding the disc shears is used, when the number of the disc shears 5 is different, different numbers of spacers 2 are needed, so that the clamp is very inconvenient and has low flexibility.
Disclosure of Invention
The invention aims to solve the technical problem of providing a clamp for repairing and grinding disc scissors, which aims to overcome the defects in the prior art.
The technical scheme includes that the clamp for repairing and grinding the disc shears comprises a mandrel, wherein a shaft shoulder is arranged on the outer circumferential surface of the mandrel, an adjusting groove which passes through the mandrel shaft axis and penetrates through the mandrel is formed in the outer circumferential surface of the mandrel along the direction of the mandrel shaft axis, the clamp further comprises a spacer bush, a screw rod and a locking nut, the spacer bush is movably sleeved on the mandrel, the screw rod is arranged at one end, far away from the shaft shoulder, of the spacer bush, the screw rod is positioned in the adjusting groove, both ends of the screw rod extend out of the adjusting groove and are respectively screwed with the locking nut, and the screw rod is clamped in the adjusting groove when the locking nut is screwed on the screw rod to be tightly adhered to the mandrel.
The clamping device has the advantages that when the clamping device is used, the plurality of disc scissors to be polished are sleeved on the mandrel, the spacer bush is sleeved on the mandrel, the screw is arranged in the adjusting groove, the two ends of the screw are respectively provided with the locking nuts, and the position of the screw in the adjusting groove is adjusted, so that when the screw is clamped in the adjusting groove through the locking nuts, the spacer bush is tightly attached to the disc scissors farthest from the shaft shoulder, the clamping of the disc scissors can be realized, when the number of the disc scissors is changed, the clamping of the disc scissors with different numbers can be realized by changing the positions of the screw in the adjusting groove, the universality is strong, the clamping device is not influenced by the change of the number and thickness dimension of the disc scissors, the clamping of multiple disc scissors can be completed in a certain range, the flexibility is better, and the clamping is more convenient.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the spacer comprises an adjusting sleeve and a movable sleeve, the movable sleeve is sleeved on the mandrel, an external thread is arranged on the outer circumferential surface of one end, close to the shaft shoulder, of the movable sleeve, an internal thread is arranged on the inner wall of the adjusting sleeve, and the adjusting sleeve is sleeved on one end, provided with the external thread, of the movable sleeve and is screwed with the movable sleeve.
The clamping device has the further beneficial effects that if slight looseness exists in the clamping process, the adjusting sleeve can be rotated to enable the adjusting sleeve to move towards the direction close to the disc scissors, the whole length of the spacer sleeve can be increased, and therefore the clamping of the disc scissors can be further achieved, and the looseness can be prevented.
Further, part of the outer surface of the lock nut protrudes outwards to form a cylindrical extension part, one end of the movable sleeve, which is close to the lock nut, is provided with an arc bayonet matched with the extension part, and the central angle of the arc bayonet is smaller than 180 degrees.
The locking nut has the further beneficial effects that when all the disc scissors are clamped, the outer extension parts of the locking nuts are positioned in the arc-shaped bayonets, so that the relative rotation between the movable sleeve and the mandrel can be further prevented, and the overall stability is ensured.
Further, the radial section shape of the adjusting sleeve is regular hexagon, or the outer circumferential surface of the adjusting sleeve is provided with anti-skid patterns.
The adoption of the adjusting sleeve has the further beneficial effect that the adjusting sleeve is convenient to rotate.
Further, the diameter of the screw is equal to or slightly smaller than the groove width of the adjustment groove.
The adoption of the adjusting groove has the further beneficial effect that the screw rod can be prevented from shaking too much in the adjusting groove along the width direction of the adjusting groove.
Drawings
FIG. 1 is a schematic view of a prior art clamp for sharpening disc shears;
FIG. 2 is a schematic structural view of the clamp for repairing and grinding the disc shears according to the present invention;
FIG. 3 is a front view of the clamp for sharpening disc shears according to the present invention;
FIG. 4 is a top view of the disc shear sharpening fixture of the present invention;
fig. 5 is a sectional view of the jig for sharpening a disc shear according to the present invention after assembling the disc shear.
In the drawings, the list of components represented by the various numbers is as follows:
1. the device comprises a mandrel, 110, a shaft shoulder, 120, an adjusting groove, 130, a first extension column, 140, a second extension column, 2, a spacer bush, 210, an adjusting bush, 220, a movable bush, 221, an arc bayonet, 3, a screw, 4, a locking nut, 410, an extension part, 5, a disc shear, 6 and a guide key.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 2,3, 4 and 5, a clamp for grinding disc shears includes a mandrel 1, a shoulder 110 is disposed on an outer circumferential surface of the mandrel 1, and in the drawings given in this embodiment, the shoulder 110 is disposed at a left end of the mandrel 1, an adjusting slot 120 passing through the mandrel 1 and penetrating the mandrel 1 is disposed on the outer circumferential surface of the mandrel 1 along the axial line direction of the mandrel 1, preferably, the left end of the adjusting slot 120 extends to be close to the shoulder 110, and the right end of the adjusting slot 120 extends to be close to the right end of the mandrel 1.
The clamp for grinding the disc shears further comprises a spacer bush 2, a screw rod 3 and a locking nut 4, wherein the movable bush 220 of the spacer bush 2 is arranged on the mandrel 1, the moving stroke of the spacer bush 2 on the area where the regulating groove 120 is located is at least larger than the thickness of one disc shear 5, specifically one, two, three, four, five and the like, the screw rod 3 is arranged at one end of the spacer bush 2 far away from the shaft shoulder 110, the screw rod 3 is positioned in the regulating groove 120, both ends of the screw rod 3 extend out of the regulating groove 120, both ends of the screw rod 3 are respectively screwed with the locking nut 4, and the screw rod 3 can be clamped in the regulating groove 120 when the locking nut 4 is screwed on the screw rod 3 to be tightly attached to the mandrel 1.
In this embodiment, the above scheme may be further optimized, which is specifically as follows:
The spacer bush 2 comprises an adjusting bush 210 and a movable bush 220, the movable bush 220 is sleeved on the mandrel 1, the inner diameter of the movable bush 220 is preferably equal to the outer diameter of the mandrel 1, an external thread is arranged on the outer circumferential surface of one end, close to the shaft shoulder 110, of the movable bush 220, the length of the area of the external thread arranged on the movable bush 220 is smaller than or equal to the thickness of one disc shear 5, an internal thread is arranged on the inner wall of the adjusting bush 210, and the adjusting bush 210 is sleeved on one end, provided with the external thread, of the movable bush 220 and is screwed with the movable bush 220.
Part of the outer surface of the lock nut 4 protrudes outwards to form a cylindrical outer extension 410, preferably part of the outer surface of the lock nut 4 near one end of the mandrel 1 protrudes outwards to form a cylindrical outer extension 410, one end of the movable sleeve 220 near the lock nut 4 is provided with an arc-shaped bayonet 221 matched with the outer extension 410, the arc-shaped bayonet 221 penetrates through the whole wall surface of the movable sleeve 220, and the central angle of the arc-shaped bayonet 221 is smaller than 180 degrees, specifically 30 degrees, 45 degrees, 60 degrees, 75 degrees, 90 degrees, 120 degrees or 150 degrees.
The radial section of the adjusting sleeve 210 is regular hexagon, if the radial section is regular hexagon, the adjusting sleeve 210 can be conveniently rotated by a tool such as a wrench;
Or, the outer circumference of the adjusting sleeve 210 is provided with anti-slip patterns, and if the anti-slip patterns are provided, the adjusting sleeve 210 can be conveniently rotated manually.
In general, the diameter of the screw 3 is equal to or slightly smaller than the groove width of the adjustment groove 120, and if it is slightly smaller, the diameter of the screw 3 is smaller than the groove width of the adjustment groove 120 by within 2mm, specifically, may be 0.5mm, 1mm or 1.5mm.
In this embodiment, the positioning between the disc scissors 5 and the mandrel 1 is also performed by a guide key, and the movable sleeve 220 is provided with a through groove matched with the guide key 6.
When in use:
The method comprises the steps of sleeving a plurality of disc scissors 5 to be ground on a mandrel 1, positioning the disc scissors 5 and the mandrel 1 by utilizing a guide key, sleeving a spacer bush 2 on the mandrel 1, installing a screw 3 in an adjusting groove 120, installing a lock nut 4 at each of two ends of the screw 3, moving the spacer bush 2 to be attached to the disc scissors 5 farthest from a shaft shoulder 110, moving the screw 3 to a proper position, screwing two lock nuts 4, enabling the lock nuts 4 to be attached to the mandrel 1, enabling the spacer bush 2 to be attached to the disc scissors 5 farthest from the shaft shoulder 110 under the cooperation of the screw 3 and the lock nuts 4, and therefore clamping the disc scissors 5.
If there is a slight loosening, the adjusting sleeve 210 may be rotated so that the adjusting sleeve 210 moves in a direction approaching the disc shears 5, and the overall length of the spacer 2 will become greater, so that the clamping of the disc shears 5 may be further achieved.
When all the disc shears 5 are clamped, the outer extension 410 of the lock nut 4 is positioned in the arc-shaped bayonet 221, so that the relative rotation between the movable sleeve 220 and the mandrel 1 can be further prevented, and the overall stability is ensured.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348019.XA CN109434574B (en) | 2018-11-13 | 2018-11-13 | A fixture for grinding circular scissors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811348019.XA CN109434574B (en) | 2018-11-13 | 2018-11-13 | A fixture for grinding circular scissors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109434574A CN109434574A (en) | 2019-03-08 |
| CN109434574B true CN109434574B (en) | 2025-02-18 |
Family
ID=65552146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811348019.XA Active CN109434574B (en) | 2018-11-13 | 2018-11-13 | A fixture for grinding circular scissors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109434574B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473596B (en) * | 2022-03-18 | 2024-04-19 | 安徽省凌锋冶金机械有限公司 | Fixed turning and grinding clamp for left-right rotary scrap shears and application thereof |
| CN114603408B (en) * | 2022-05-13 | 2022-07-29 | 徐州双虎金属工具制造有限公司 | Aviation shear part processing equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202622438U (en) * | 2012-06-29 | 2012-12-26 | 湖北三江航天红阳机电有限公司 | Adjustable self-centering internal supporting device of thin-wall part |
| CN203210127U (en) * | 2013-03-25 | 2013-09-25 | 宝钢股份黄石涂镀板有限公司 | Clamp for coping disc shear blade |
| CN204108696U (en) * | 2014-07-28 | 2015-01-21 | 资阳南车传动有限公司 | A kind of balance weight auxiliary machining device |
| CN204658016U (en) * | 2015-05-27 | 2015-09-23 | 贵州天义电梯成套设备有限公司 | A kind of band sawing machine hold down gag |
| CN206123342U (en) * | 2016-11-10 | 2017-04-26 | 洛阳万基铝加工有限公司 | Aluminum plate cuts edge with a device of whetting a knife of circle shear cutter in area |
| CN209223712U (en) * | 2018-11-13 | 2019-08-09 | 湖北大帆金属制品有限公司 | A kind of disc scissors reconditioning fixture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1579955B1 (en) * | 2004-03-25 | 2010-09-22 | WENDT GmbH | Ram clamping device |
| CN107309468A (en) * | 2017-07-20 | 2017-11-03 | 袁志航 | Electric hand drill is punched in a kind of metope dust suppression |
-
2018
- 2018-11-13 CN CN201811348019.XA patent/CN109434574B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202622438U (en) * | 2012-06-29 | 2012-12-26 | 湖北三江航天红阳机电有限公司 | Adjustable self-centering internal supporting device of thin-wall part |
| CN203210127U (en) * | 2013-03-25 | 2013-09-25 | 宝钢股份黄石涂镀板有限公司 | Clamp for coping disc shear blade |
| CN204108696U (en) * | 2014-07-28 | 2015-01-21 | 资阳南车传动有限公司 | A kind of balance weight auxiliary machining device |
| CN204658016U (en) * | 2015-05-27 | 2015-09-23 | 贵州天义电梯成套设备有限公司 | A kind of band sawing machine hold down gag |
| CN206123342U (en) * | 2016-11-10 | 2017-04-26 | 洛阳万基铝加工有限公司 | Aluminum plate cuts edge with a device of whetting a knife of circle shear cutter in area |
| CN209223712U (en) * | 2018-11-13 | 2019-08-09 | 湖北大帆金属制品有限公司 | A kind of disc scissors reconditioning fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109434574A (en) | 2019-03-08 |
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