CN212042918U - Adjusting device for side gap of trimming shears - Google Patents
Adjusting device for side gap of trimming shears Download PDFInfo
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- CN212042918U CN212042918U CN202020385921.5U CN202020385921U CN212042918U CN 212042918 U CN212042918 U CN 212042918U CN 202020385921 U CN202020385921 U CN 202020385921U CN 212042918 U CN212042918 U CN 212042918U
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Abstract
The utility model relates to an adjusting device for side gap of a trimming shear, belonging to the technical field of edge shearing of hot rolling strip steel, comprising a frame, wherein a transmission mechanism is arranged on the frame; the transmission mechanism comprises a lead screw and a lead screw nut; the lead screw is rotationally connected to the rack; one end of the screw rod is fixedly connected with a driving device, and the driving device is fixedly connected to the rack; the screw nut is in threaded connection with the screw; a cutter shaft is rotatably connected to the screw nut and is coaxial with the screw; the cutter shaft moves along the axial direction under the driving of the driving device through the transmission mechanism. The utility model discloses can realize higher adjustment accuracy, solve the problem that the structure is complicated among the prior art, the installation is maintained loaded down with trivial details, manufacturing cost is high.
Description
Technical Field
The utility model belongs to the technical field of hot rolling belted steel limit portion is cuted, a side cut cuts adjusting device of sideshake is related to.
Background
In a cold rolling production line, the edge of the pickled strip steel and the strip steel in a strip steel post-processing unit needs to be sheared by a circular trimming shear so as to meet the width requirement of finished product strip steel, and the method is a very key process in the whole cold rolling production line. For the disc edge cutting shears, the quality of the cut edge has a very close relation with the side clearance of the cutter disc on each side, and the quality of the cut edge of the strip steel has a very large influence on the subsequent process, the use of downstream users and the yield, and influences the final quality of products; meanwhile, the side clearance has great influence on the service life of the cutter head, and the accurate and reasonable side clearance can well prolong the service life of the cutter head. According to production practices, the sizes of the side clearances of the cutter head are different when metal strips or plates with different thicknesses and materials are cut, so that the side clearances of the cutter head need to be adjusted when the metal strips or plates with different thicknesses are produced, and how to accurately adjust the side clearances of the cutter head to the expected sizes is the most central technology of the whole disc edge cutting shear equipment.
With the development of technology, the adjustment of the side gap of the trimming shears disc has been developed from the former manual adjustment to the automatic adjustment. At present, the adjustment schemes for the side clearance in the domestic and foreign technologies are many, including early worm and gear and eccentric wheel structures, to the existing wedge driving structure and eccentric connecting rod structure. However, the existing structural types are complex, troublesome to maintain and high in technical level requirements on operators.
Therefore, it is very necessary to find a new adjusting device for the side gap of the trimming shears, which can achieve higher adjusting precision, simplify the structure of the device, facilitate installation and maintenance, and reduce the manufacturing cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application aims to provide an adjusting device for side gap of a trimming shear, which can achieve higher adjusting precision and solve the problems of complex structure, complex installation and maintenance and high manufacturing cost in the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a side gap adjusting device of a trimming shear comprises a rack, wherein a transmission mechanism is arranged on the rack;
the transmission mechanism comprises a lead screw and a lead screw nut;
the lead screw is rotationally connected to the rack;
one end of the lead screw is fixedly connected with a driving device, and the driving device is fixedly connected to the rack;
the screw rod nut is in threaded connection with the screw rod;
a cutter shaft is rotatably connected to the screw nut and is coaxial with the screw;
the cutter shaft moves along the axial direction under the driving of the driving device through the transmission mechanism.
Optionally, the screw nut is connected with the cutter shaft through a connecting assembly, the connecting assembly comprises a connecting sleeve and a movable cutter sleeve, and the connecting sleeve is fixedly connected with the screw nut and the movable cutter sleeve; the cutter shaft penetrates through the movable cutter sleeve and is rotationally connected with the movable cutter sleeve.
Optionally, the cutter shaft is connected with the movable cutter sleeve through a first bearing.
Optionally, the first bearing comprises a bidirectional angular contact ball bearing and a cylindrical roller bearing arranged side by side.
Optionally, a cutter shaft bracket is arranged on the movable cutter sleeve, the cutter shaft bracket is connected with the movable cutter sleeve in a sliding manner, a preload piece is arranged on the end surface of the cutter shaft bracket close to the connecting sleeve, and the preload piece is fixedly connected with the connecting sleeve; and a second bearing for supporting the cutter shaft is arranged in the other end of the cutter shaft bracket.
Optionally, the preload member is a disc spring.
Optionally, the middle part of the lead screw is provided with a third bearing for supporting, the third bearing is a bidirectional thrust cylindrical roller bearing, an outer ring of the third bearing is fixed on the rack, and an inner ring of the third bearing is axially fixed through a double-locking round nut and a third shoulder.
Optionally, the lead screw is a differential lead screw.
Optionally, the drive means is a right angle hollow shaft gear motor.
Optionally, the driving device is connected with and controlled by a control system; the control system comprises an absolute value encoder which controls the driving device to rotate.
The beneficial effects of the utility model reside in that:
1. the utility model discloses an adjusting device of side cut and cut sideshake through set up cylindrical roller bearing and two-way angular contact ball bearing side by side in the activity guide sleeve, makes the arbor bear axial force and radial force simultaneously, and then realizes the axial synchronization of arbor and activity knife pouch, and then the axial displacement of effective control arbor.
2. The utility model discloses an adjusting device of side cut and cut sideshake through set up the pretension piece that is used for eliminating mechanical play between arbor support and connection external member, has improved the axial displacement precision of arbor.
3. The utility model discloses an adjusting device of side cut shear backlash through adopting the differential lead screw of high accuracy, has improved screw nut's motion accuracy, has improved the axial displacement precision of arbor.
4. The utility model discloses an adjusting device of side cut shear backlash through adopting the absolute value encoder, has improved the control accuracy to motor speed, has realized the accurate control to feed screw rotation angle, and then has improved the axial displacement precision of arbor.
5. The utility model discloses an adjusting device of side cut shear backlash has improved the adjustment precision of backlash through the axial displacement precision of effective control arbor, and the adjustment precision of backlash can reach 1 mu m.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of an adjusting device for side clearance of a trimming shear of the present invention;
fig. 2 is a schematic structural diagram of the transmission mechanism of the present invention.
Reference numerals: the device comprises a cutter shaft 1, a first cylindrical roller bearing 2, a locking nut 3, a cutter shaft bracket 4, a second cylindrical roller bearing 5, a bidirectional angular contact ball bearing 6, a movable cutter sleeve 7, a first double locking round nut 8, a connecting sleeve 9, a disc spring 10, a transmission mechanism 11, a support frame 12, a differential lead screw nut 13, a differential lead screw 14, a bearing seat 15, a bidirectional thrust cylindrical roller bearing 16, a sealing ring 17, a second double locking round nut 18, a right-angle hollow shaft type gear motor 19, a coupler 20, an absolute value encoder 21 and a rack 22.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Example 1:
referring to fig. 1 and 2, an adjusting device for side clearance of a trimming shear includes a frame 22, wherein the frame 22 is provided with a transmission mechanism 11; the transmission mechanism 11 comprises a lead screw and a lead screw nut; the screw rod is a differential screw rod and is rotationally connected to the rack 22 through the support frame 12; one end of the screw rod is fixedly connected with a driving device, the driving device is a right-angle hollow shaft type gear motor, the driving device is fixedly connected to the rack 22 through the supporting frame 12, and the driving device is connected with a control system and is controlled through the control system; the control system comprises an absolute value encoder 21, and the absolute value encoder 21 controls the driving device to rotate; the screw nut is in threaded connection with the screw; a cutter shaft 1 is rotatably connected to the screw nut, and the cutter shaft 1 is coaxial with the screw; the cutter shaft 1 moves along the axial direction under the drive of the drive device through the transmission mechanism 11; the screw nut is connected with the cutter shaft 1 through a connecting assembly, the connecting assembly comprises a connecting sleeve 9 and a movable cutter sleeve 7, and the connecting sleeve 9 is fixedly connected with the screw nut and the movable cutter sleeve 7; the cutter shaft 1 penetrates through the movable cutter sleeve 7 and is rotationally connected with the movable cutter sleeve; the cutter shaft 1 is connected with the movable cutter sleeve 7 through a first bearing; the inner ring of the first bearing is fixed with the first shaft shoulder through a first double-locking round nut 8, and the outer ring of the first bearing is axially fixed through a movable cutter sleeve 7 and a connecting sleeve 9; the first bearing comprises a bidirectional angular contact ball bearing 6 and a second cylindrical roller bearing 5 which are arranged side by side; the movable cutter sleeve 7 is sleeved with a cutter shaft support 4 playing a role in axial positioning, the cutter shaft support 4 is connected with the movable cutter sleeve 7 in a sliding mode, a preload piece is arranged on the end face, close to the connecting sleeve 9, of the cutter shaft support 4, the preload piece is a disc spring 10, and the preload piece is fixedly connected with the connecting sleeve 9; a second bearing for supporting the cutter shaft 1 is arranged in the other end of the cutter shaft bracket 4, and the second bearing is a first cylindrical roller bearing 2; the inner ring of the second bearing is axially fixed through a locking nut 3 and a second shoulder; the middle part of lead screw is equipped with the third bearing that plays supporting role, and the third bearing is two-way thrust cylindrical roller bearing 16, and two-way thrust cylindrical roller bearing 16 installs on bearing frame 15, and the outer lane of third bearing is fixed on bearing frame 15, and the inner circle of third bearing carries out axial fixity through two lock round nut 18 and third shoulder, and bearing frame 15 passes through support frame 12 to be fixed on frame 22.
The middle cutter shaft 1 of the utility model is assembled by a series of parts, is a shearing working part of the disc trimming shears, and is also a final adjusting object of the backlash adjusting device; the cutter shaft bracket 4 and the movable cutter sleeve 7 are installed through a first cylindrical roller bearing 2, a second cylindrical roller bearing 5 and a bidirectional angular contact ball bearing 6.
The first cylindrical roller bearing 2 and the second cylindrical roller bearing 5 are used to provide radial force to the arbor 1 and only allow the arbor 1 to move in the axial direction.
The cutter shaft bracket 4 adopts a welding steel structure type and is used for supporting the cutter shaft 1, the first cylindrical roller bearing 2, the movable cutter sleeve 7, the connecting sleeve 9 and the like.
The bidirectional angular contact ball bearing 6 is used for providing axial force for the cutter shaft 1, and performs radial and axial limiting on the cutter shaft 1 together with the first cylindrical roller bearing 2 and the second cylindrical roller bearing 5.
The movable cutter sleeve 7 is arranged between the cutter shaft bracket 4 and the cutter shaft 1 and can drive the cutter shaft 1 to move back and forth in the cutter shaft bracket 4 under the action of the transmission mechanism 11.
One end of the connecting sleeve 9 is connected with the movable knife pouch 7, and the other end is connected with the transmission mechanism 11, so that the movable knife pouch 7 can be driven to move back and forth under the action of the transmission mechanism 11.
A disc spring 10 is mounted between the arbor support 4 and the connecting sleeve 9 for eliminating the existing mechanical play.
The transmission mechanism 11 is composed of a support frame 12, a differential lead screw nut 13, a differential lead screw 14, a bearing seat 15, a bidirectional thrust cylindrical roller bearing 16, a sealing ring 17, a second double-locking circular nut 18, a right-angle hollow shaft type gear motor 19, a coupler 20 and an absolute value encoder 21, and provides driving force for the axial movement of the cutter shaft 1.
The support frame 12 is made of welded steel and used for supporting the transmission mechanism 11 and is mounted on the frame 22 through bolts.
The differential lead screw 14 and the differential lead screw nut 13 select proper screw pitches according to actual needs, if higher automatic adjustment precision is required, the screw pitch of 0.02mm can be selected, namely, the differential lead screw nut 13 moves 0.02mm every time the differential lead screw 14 rotates one circle, and the backlash adjustment precision can be controlled within 1 mu m very easily.
The differential screw nut 13 is connected with the connecting sleeve 9 through a bolt, and the screw nut 13 is provided with a step sleeve and is matched with the central hole of the connecting sleeve 9.
The bearing block 15 is mounted directly on the support frame 12 for providing support for the differential lead screw 14 and the bidirectional thrust cylindrical roller bearing 16.
The bidirectional thrust cylindrical roller bearing 16 is installed inside the bearing seat 15, the bidirectional thrust cylindrical roller bearing 16 and the second double locking round nut 18 perform axial limiting on the differential lead screw 14 together, and the differential lead screw 14 is prevented from moving to influence the adjustment precision in the process of adjusting the backlash.
The right-angle hollow shaft type gear motor 19 is used to provide a driving force for the differential lead screw 14 and reduce an installation space.
The absolute value encoder 21 is used for accurately controlling the right-angle hollow shaft type gear motor 19, so that the aim of accurately controlling the forward and backward movement distance of the cutter shaft 1 is fulfilled.
The utility model discloses a theory of operation: when the side clearance needs to be adjusted, firstly, the right-angle hollow shaft type gear motor 19 precisely rotates for a certain angle under the precise control of the absolute value encoder 21, so that the differential lead screw 14 is driven to rotate for the same angle, the differential lead screw 14 drives the differential lead screw nut 13 to move forwards or backwards for a certain distance, the differential lead screw nut 13 is connected with the connecting sleeve 9, the differential lead screw nut 13 also drives the connecting sleeve 9 to move for the same distance, the connecting sleeve 9 is connected with the movable cutter sleeve 7, similarly, the connecting sleeve 9 drives the movable cutter sleeve 7 to move for the same distance, the movable cutter sleeve 7 transmits acting force to the cutter shaft 1 through the bidirectional angular contact ball bearing 6, the cutter shaft 1 is driven to move for the same distance, and finally, the shear blades mounted on the cutter shaft 1 move along with the cutter shaft 1, so that the purpose of adjusting the side.
The utility model realizes the axial synchronization of the cutter shaft 1 and the movable cutter sleeve 7 by adopting the combined action of the cylindrical roller bearing and the bidirectional angular contact ball bearing 6; then, the movable cutter sleeve 7 is connected with the high-precision differential screw 14 through the connecting sleeve 9; finally, the transmission motor of the differential lead screw 14 is accurately controlled through the absolute value encoder 21, the aim of accurately controlling the front and back movement of the cutter shaft 1 is finally achieved, the automatic adjustment of the side clearance is achieved, the automatic adjustment precision can be easily controlled within 1 micrometer, and the aim of simplifying the structure of the adjusting device is also achieved.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. The utility model provides an adjusting device of side cut shear backlash, includes the frame, its characterized in that: the rack is provided with a transmission mechanism;
the transmission mechanism comprises a lead screw and a lead screw nut;
the lead screw is rotationally connected to the rack;
one end of the lead screw is fixedly connected with a driving device, and the driving device is fixedly connected to the rack;
the screw rod nut is in threaded connection with the screw rod;
a cutter shaft is rotatably connected to the screw nut and is coaxial with the screw;
the cutter shaft moves along the axial direction under the driving of the driving device through the transmission mechanism.
2. The apparatus for adjusting backlash in a trim shear of claim 1, wherein: the screw nut is connected with the cutter shaft through a connecting assembly, the connecting assembly comprises a connecting sleeve and a movable cutter sleeve, and the connecting sleeve is fixedly connected with the screw nut and the movable cutter sleeve; the cutter shaft penetrates through the movable cutter sleeve and is rotationally connected with the movable cutter sleeve.
3. The apparatus for adjusting backlash in a trim shear of claim 2, wherein: the cutter shaft is connected with the movable cutter sleeve through a first bearing.
4. The apparatus for adjusting backlash in a trim shear of claim 3, wherein: the first bearing comprises a bidirectional angular contact ball bearing and a cylindrical roller bearing which are arranged side by side.
5. The apparatus for adjusting backlash in a trim shear of claim 4, wherein: a cutter shaft bracket is arranged on the movable cutter sleeve and is connected with the movable cutter sleeve in a sliding manner, a pre-tightening piece is arranged on the end surface of the cutter shaft bracket close to the connecting sleeve, and the pre-tightening piece is fixedly connected with the connecting sleeve; and a second bearing for supporting the cutter shaft is arranged in the other end of the cutter shaft bracket.
6. The apparatus for adjusting backlash in a trim shear of claim 5, wherein: the preload part is a disc spring.
7. The apparatus for adjusting backlash in a trim shear of claim 1, wherein: the middle part of lead screw is equipped with the third bearing that plays supporting role, the third bearing is two-way thrust cylindrical roller bearing, the outer lane of third bearing is fixed in the frame, the inner circle of third bearing is through two lock round nut and third shoulder axial fixation.
8. The apparatus for adjusting backlash in a trim shear of claim 1, wherein: the lead screw is a differential lead screw.
9. The apparatus for adjusting backlash in a trim shear of claim 1, wherein: the driving device is a right-angle hollow shaft type gear motor.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920728414 | 2019-05-20 | ||
| CN2019207284144 | 2019-05-20 | ||
| CN2019211718926 | 2019-07-24 | ||
| CN201921171892 | 2019-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212042918U true CN212042918U (en) | 2020-12-01 |
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ID=73529828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020385921.5U Active CN212042918U (en) | 2019-05-20 | 2020-03-24 | Adjusting device for side gap of trimming shears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212042918U (en) |
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2020
- 2020-03-24 CN CN202020385921.5U patent/CN212042918U/en active Active
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