CN211939282U - Shear blade side gap adjusting structure of drum-type flying shear - Google Patents
Shear blade side gap adjusting structure of drum-type flying shear Download PDFInfo
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- CN211939282U CN211939282U CN202020484344.5U CN202020484344U CN211939282U CN 211939282 U CN211939282 U CN 211939282U CN 202020484344 U CN202020484344 U CN 202020484344U CN 211939282 U CN211939282 U CN 211939282U
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Abstract
The utility model provides a can improve drum-type flying shear cutting edge backlash adjustment structure of drum-type flying shear cutting edge backlash adjustment precision relates to the drum-type flying shear of shearing belted steel. The side clearance adjusting structure of the cutting edge of the drum-type flying shear comprises a driving device, a ball screw, a bidirectional thrust bearing and a synchronous transmission mechanism, wherein the driving device is arranged on an operation side rack; the bidirectional thrust bearing is installed on the driven rotary drum, the ball screw comprises a screw rod and a screw nut installed on the screw rod, the screw nut is fixedly installed on the operation side rack, one end of the screw rod is in transmission connection with the driving device, and the other end of the screw rod is connected with the driven rotary drum through the bidirectional thrust bearing. The utility model discloses be favorable to improving the shearing quality of flying shear.
Description
Technical Field
The utility model relates to a drum-type flying shear of shearing belted steel specifically is a drum-type flying shear cutting edge backlash adjustment structure.
Background
The drum-type flying shear has the characteristics of high shearing speed, simple structure and the like, is widely applied to a continuous strip steel processing unit, and plays an important role in the quality of a shearing section due to the size of the shear blade gap.
When the side clearance of the cutting edge of the existing drum-type flying shear is adjusted, a hydraulic motor drives a planetary gear reducer to drive a transmission gear to rotate, a large gear inner hole meshed with the transmission gear is a threaded hole, the large gear inner hole is connected with a threaded sleeve fixed on a flying shear drum to form a screw rod nut device, the rotary motion of the gear is converted into axial motion output by a screw rod nut, so that the drum is driven to axially move, and the drum generates micro-rotation under the action of a helical tooth synchronous gear, so that the side clearance of the cutting edge of the flying shear is adjusted. The existing shear blade backlash adjusting structure is in two-shaft or three-shaft transmission, the whole moving chain is long, the transmission mode is complex, the mechanical clearance is large, the rigidity is low, and the problem of low shear blade backlash adjusting precision exists, so that the shearing quality of the flying shear is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a drum-type flying shear cutting edge backlash adjustment structure that can improve drum-type flying shear cutting edge backlash adjustment precision is provided.
The utility model provides a technical scheme that its technical problem adopted is: the side clearance adjusting structure of the cutting edge of the drum-type flying shear comprises a driving device, a ball screw, a bidirectional thrust bearing and a synchronous transmission mechanism; the synchronous transmission mechanism comprises a gear pair which is meshed with each other and has a transmission ratio of 1: 1, the driving synchronous helical gear is arranged on a driving rotary drum, and the driven synchronous helical gear is arranged on a driven rotary drum;
the bidirectional thrust bearing is installed on the driven rotary drum, the ball screw comprises a screw rod and a screw nut installed on the screw rod, the screw nut is fixedly installed on the operation side rack, one end of the screw rod is in transmission connection with the driving device, and the other end of the screw rod is connected with the driven rotary drum through the bidirectional thrust bearing.
Further, the operation side frame is provided with a protective cover for protecting the synchronous transmission mechanism.
Further, the driving device is a staggered shaft speed reducing motor arranged on the operation side frame.
Further, still include the encoder, the encoder is installed in crisscross axle gear motor.
Further, the driving drum thrust bearing is installed on the driving rotary drum.
Furthermore, a cross beam is arranged between the operation side rack and the transmission side rack.
The utility model has the advantages that: the utility model discloses a ball screw promotes driven rotary drum along driven rotary drum axis direction round trip movement, rethread synchronization mechanism makes the principal and subordinate's action rotary drum do the trace and rotate during the removal to adjustment cutting edge backlash, after adopting above-mentioned embodiment, the mechanism motion can be realized on same axle, adopt less part to realize the accurate adjustment of cutting edge backlash, whole kinematic chain is short, compact structure, light in weight, the rigidity is good, the adjustment precision is high, control is accurate, be favorable to improving the shearing quality of flying shear.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged schematic view at A of FIG. 1;
shown in the figure: the device comprises a driving device 2, a ball screw 3, a bidirectional thrust bearing 4, an encoder 6, a driving drum thrust bearing 7, an operation side frame 11, a transmission side frame 12, a beam 13, a driven rotary drum 14, a driving rotary drum 15, a rotary drum bearing 16, a shear blade 17, a screw rod 31, a screw rod nut 32, a driving synchronous helical gear 52, a driven synchronous helical gear 51, a protective cover 111, a support 141 and a driving drum thrust bearing support 142.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and 2, the flying shear includes a frame, and a driving drum 15 and a driven drum 14 which are arranged up and down, wherein the driving drum 15 is arranged on the upper drum, the cutting edges 17 are respectively arranged on the driving drum 15 and the driven drum 14, the frame includes an operation side frame 11 and a transmission side frame 12, the driving drum 15 and the driven drum 14 are respectively rotatably arranged on the frame through a drum bearing 16, the driving drum 15 is driven by a motor to input a shearing torque, and the driven drum 14 can axially move on the frame. In order to improve flying shear cutting edge backlash adjustment accuracy, the utility model discloses a drum-type flying shear cutting edge backlash adjustment structure includes drive arrangement 2, ball screw 3, two-way thrust bearing 4 and synchronous drive mechanism. The synchronous transmission mechanism comprises a gear pair which is meshed with each other and has a transmission ratio of 1: 1, the driving synchronous bevel gear 52 is arranged on the driving rotary drum 15, and the driven synchronous bevel gear 51 is arranged on the driven rotary drum 14. The bidirectional thrust bearing 4 is mounted on the driven rotary drum 14, the ball screw 3 and the driven rotary drum 14 are arranged coaxially, the ball screw 3 comprises a screw rod 31 and a screw nut 32 mounted on the screw rod 31, the screw nut 32 is fixedly mounted on the operation side rack 11, one end of the screw rod 31 is in transmission connection with the driving device 2, and the other end of the screw rod 31 is connected with the driven rotary drum 14 through the bidirectional thrust bearing 4.
The bidirectional thrust bearing 4 mainly bears axial forces in two directions generated by positive and negative rotation of the screw rod 31, and comprises a structure formed by oppositely mounting two unidirectional thrust bearings; the drive unit 2 can be fixedly mounted on the operating-side frame 11, and it can be understood that, since the screw 31 can move axially, a coupling allowing a large distance displacement is required between the screw 31 and the drive unit 2, such as: spline coupling, axial movable radial key rigid coupling.
Specifically, as shown in fig. 1, a shaft ring of the bidirectional thrust bearing 4 is fixed on the driven drum 14 (not shown in the figure), a bracket 141 (the connection may be welding, bolting, or an integral structure, etc.) is disposed at an end of the lead screw 31, a lead screw nut 32 is installed and fixed on the protective cover 111, the protective cover 111 is disposed on the operation side frame 11 to protect the synchronous transmission mechanism, one end of the lead screw 31 is in transmission connection with the driving device 2, and the other end of the lead screw is connected with a race of the bidirectional thrust bearing 4 through the bracket 141 (not shown in the figure), that is, the race of the bidirectional thrust bearing 4 is installed in the bracket 141, so that the lead screw 31 is connected with the driven drum 14 through the bidirectional thrust bearing 4, and thus the driven drum 14 can be pushed to move back and forth.
In fig. 1, the operation side frame 11 and the transmission side frame 12 are integrally connected through a cross beam 13 to increase the rigidity of the frames. The beam 13 and the frame can be connected by bolts.
The drive means 2 is preferably a staggered-axis gear motor (including a motor and a worm gear reducer), which is more compact than the coaxial gear motor, and the first mode can achieve self-locking of the position of the driven drum 14 in the axial direction, i.e., the flying shear prevents the lateral clearance from changing by itself. In the figure, the drive unit 2 is mounted on a guard on the operating-side frame 11.
When the lateral clearance is adjusted, the driving device 2 pushes the driven drum 14 to move back and forth along the axial direction of the driven drum 14 through the ball screw 3, when the driven drum moves axially, the driven synchronous helical gear 51 moves axially relative to the driving synchronous helical gear 52, and because the driving synchronous helical gear 52 and the driven synchronous helical gear 51 are helical gears, when the driven synchronous helical gear 51 moves axially, the upper synchronous gear 52 and the lower synchronous gear 52 rotate slightly, so that the driving drum and the driven drum are driven to rotate slightly, and the side clearance of the cutting edge is adjusted. After the embodiment is adopted, the mechanism can move on the same shaft, the mechanism adopts the ball screw to drive and move, the rigidity of the mechanism is good, the movement precision is high, the accurate adjustment of the side clearance of the shearing blade is realized by adopting fewer parts, the whole movement chain is short, the structure is compact, the weight is light, and the improvement of the shearing quality of the flying shear is facilitated.
In order to adjust the lateral clearance of the flying shear conveniently, the staggered shaft speed reducing motor is also provided with an encoder 6, and the encoder can be arranged on a motor or a rotating shaft of a worm and gear speed reducer.
When the flying shear shears, the synchronous helical gear generates a large axial force, as shown in fig. 1 and 2, the axial force on the driven drum 14 can be transmitted to the operation side frame 11 through the bidirectional thrust bearing 4, and the driving drum thrust bearing 7 is mounted on the driving drum 15 in order to balance the axial force generated when the driving synchronous helical gear 52 moves. As can be seen, according to the installation method of the thrust bearing, the driving drum thrust bearing 7 is fixed on the driving drum 15 by the collar thereof, the driving drum thrust bearing 7 is fixed on the operation side frame by the race thereof, and the race of the driving drum thrust bearing 7 is fixed on the driving drum thrust bearing support 142 on the protection cover 111 in the figure.
Claims (6)
1. Drum-type flying shear cutting edge backlash adjustment structure, its characterized in that: comprises a driving device (2), a ball screw (3), a bidirectional thrust bearing (4) and a synchronous transmission mechanism; the synchronous transmission mechanism comprises a gear pair which is meshed with each other and has a transmission ratio of 1: 1, the driving synchronous bevel gear (52) is arranged on the driving rotary drum (15), and the driven synchronous bevel gear (51) is arranged on the driven rotary drum (14);
the bidirectional thrust bearing (4) is installed on the driven rotary drum (14), the ball screw (3) and the driven rotary drum (14) are coaxially arranged, the ball screw (3) comprises a screw rod (31) and a screw nut (32) installed on the screw rod (31), the screw nut (32) is fixedly installed on the operation side rack (11), one end of the screw rod (31) is in transmission connection with the driving device (2), and the other end of the screw rod is connected with the driven rotary drum (14) through the bidirectional thrust bearing (4).
2. A shear blade backlash adjustment mechanism for a drum-type flying shear as claimed in claim 1, wherein: the operation side frame (11) is provided with a protective cover (111) for protecting the synchronous transmission mechanism.
3. A shear blade backlash adjustment mechanism for a drum-type flying shear as claimed in claim 1, wherein: the driving device (2) is a staggered shaft speed reducing motor arranged on the operation side frame (11).
4. A shear blade backlash adjustment mechanism for a drum-type flying shear as claimed in claim 3, wherein: the motor is characterized by further comprising an encoder (6), wherein the encoder (6) is installed on the staggered shaft speed reducing motor.
5. A shear blade backlash adjustment mechanism for a drum-type flying shear as claimed in claim 1, wherein: the device also comprises a driving drum thrust bearing (7) arranged on the driving rotary drum (15).
6. A shear blade backlash adjustment mechanism for a drum-type flying shear as claimed in claim 1, wherein: a beam (13) is arranged between the operation side frame (11) and the transmission side frame (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020484344.5U CN211939282U (en) | 2020-04-03 | 2020-04-03 | Shear blade side gap adjusting structure of drum-type flying shear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020484344.5U CN211939282U (en) | 2020-04-03 | 2020-04-03 | Shear blade side gap adjusting structure of drum-type flying shear |
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| Publication Number | Publication Date |
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| CN211939282U true CN211939282U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020484344.5U Active CN211939282U (en) | 2020-04-03 | 2020-04-03 | Shear blade side gap adjusting structure of drum-type flying shear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059232A (en) * | 2021-03-31 | 2021-07-02 | 南京鼎胜冶金机械有限公司 | Rod multiple-length flying shear control method and device |
-
2020
- 2020-04-03 CN CN202020484344.5U patent/CN211939282U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059232A (en) * | 2021-03-31 | 2021-07-02 | 南京鼎胜冶金机械有限公司 | Rod multiple-length flying shear control method and device |
| CN113059232B (en) * | 2021-03-31 | 2023-12-12 | 江苏锋宝冶金设备有限公司 | Bar length-doubling flying shear control method and device |
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