A Shearing Equipment Large Reduction Ratio Side Clearance Adjustment Mechanism and Usage Method

Abstract

The present invention discloses a large reduction ratio side clearance adjustment mechanism and a usage method for a shearing device, which includes an upper knife shaft system, a lower knife shaft system, and a stroke adjustment mechanism. The upper knife shaft system and the lower knife shaft system are axially parallel. The stroke adjustment mechanism is connected to one side of the upper knife shaft system. The stroke adjustment mechanism includes a ball screw, as well as a servo motor synchronous pulley and a reduction synchronous pulley module that are driven by a belt. One side of the servo motor synchronous pulley is connected to a servo motor, and the other side is connected to a handwheel clutch. The handwheel clutch is also connected to a handwheel. One end of the ball screw is connected to the upper knife shaft system, and the other end is connected to the reduction synchronous pulley module. A displacement detection device is also connected to the tail end of the other end of the ball screw. Through a harmonic reducer, the rotation speed of the synchronous pulley of the harmonic reducer module is used to rotate the ball screw after a large reduction ratio, and the control accuracy of side clearance adjustment is higher.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical technology, and relates to a large reduction ratio side clearance adjustment mechanism for a shearing device and a usage method thereof. Background Art

[0002] In metallurgical enterprises, with the technological upgrading, more and more shearing devices (such as circular shears, scrap edge shears, flying shears, etc.) need to have their clearance adjustment mechanisms automatically and precisely adjusted and be manually operable during maintenance. The improvement of the electrical control accuracy largely depends on the increase of the reduction ratio of the mechanism.

[0003] The clearance control requirement of the shearing device is within 0.01 mm, and as the strip thickness develops towards an extremely thin direction, the control accuracy is required to be within 0.005 mm. In this case, an adjustment mechanism that has both a precise stroke and a large reduction ratio (one, can meet the electrical control accuracy; two, has a large thrust) is needed. For the convenience of maintenance and the safety of blade replacement, this mechanism needs to have both an automatic function and a manual operation control function. To meet the above requirements, a shearing device manual-automatic integrated large reduction ratio side clearance adjustment mechanism is specially designed. Summary of the Invention

[0004] The purpose of the present invention is to provide a large reduction ratio side clearance adjustment mechanism for a shearing device and a usage method thereof, so as to realize automatic and manual operations and improve the side clearance control accuracy.

[0005] The purpose of the present invention is achieved by the following technical means. A large reduction ratio side clearance adjustment mechanism for a shearing device includes an upper tool shaft system, a lower tool shaft system, and a stroke adjustment mechanism. The upper tool shaft system and the lower tool shaft system are axially parallel, and the stroke adjustment mechanism is connected to one side of the upper tool shaft system.

[0006] The stroke adjustment mechanism includes a ball screw, and a servo motor synchronous pulley and a reduction synchronous pulley module that are mutually driven by a belt.

[0007] One side of the servo motor synchronous pulley is connected to a servo motor, and the other side is connected to a handwheel clutch. The handwheel clutch is also connected to a handwheel.

[0008] One end of the ball screw is connected to the upper tool shaft system, and the other end is connected to the reduction synchronous pulley module. A displacement detection device is also connected to the tail end of the other end of the ball screw.

[0009] The displacement detection device is a transverse displacement grating ruler.

[0010] The stroke adjustment mechanism further includes a PLC controller, and the PLC controller is electrically connected to the displacement detection device and the servo motor respectively.

[0011] The stroke adjustment mechanism further includes a housing of the stroke adjustment mechanism. The ball screw and the reduction synchronous pulley module are both arranged inside the housing of the stroke adjustment mechanism. A screw support bearing is further connected to the ball screw, and the screw support bearing is connected to the inner wall of the housing of the stroke adjustment mechanism.

[0012] The reduction synchronous pulley module includes a harmonic reducer and a synchronous pulley of the harmonic reducer module. The synchronous pulley of the servo motor is driven by a belt to be transmitted with the synchronous pulley of the harmonic reducer module. The synchronous pulley of the harmonic reducer module is connected to the harmonic reducer, and the harmonic reducer is connected to the nut of the ball screw.

[0013] A method for using a large reduction ratio side clearance adjustment mechanism of a shearing device includes the following steps.

[0014] First step, the ratio of side clearance change to the displacement of the upper tool shaft system. The change of the side clearance of the shearing device is linearly proportional to the displacement of the upper tool shaft system. The measured ratio is a, then dip = P * a, where dip is the actual value of the side clearance and P is the displacement of the upper tool shaft system.

[0015] Second step, calculation of the displacement of the upper tool shaft system. When the actual value of the required side clearance is calculated according to the calculation in the first step, the displacement required for the upper tool shaft system is obtained.

[0016] Third step, displacement of the upper tool shaft system. The PLC controller is used to control the servo motor to drive the synchronous pulley of the servo motor. The synchronous pulley of the servo motor drives the harmonic reducer, the synchronous pulley of the harmonic reducer module and the ball screw to rotate. The ball screw converts the rotational motion of the nut into a linear motion of the screw, so that the upper tool shaft system generates an axial displacement. During this period, the displacement grating ruler detects the displacement of the ball screw and the upper tool shaft system and feeds it back to the PLC controller.

[0017] During maintenance, the servo motor is turned off, and the synchronous pulley of the servo motor is driven by the handwheel clutch and the handwheel to realize manual control of the side clearance.

[0018] The beneficial effects of the present invention are as follows: 1. Through the harmonic reducer, the rotational speed of the synchronous pulley of the harmonic reducer module is used to rotate the ball screw after a large reduction ratio, and the control precision of the side clearance adjustment is higher.

[0019] 2. It is possible to select servo motor or handwheel drive to realize the combination of automatic and manual. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the side clearance adjustment mechanism;

[0021] Figure 2 It is a schematic structural diagram of the stroke adjustment mechanism;

[0022] Figure 3 It is a schematic structural diagram of the servo motor part;

[0023] Figure 4 It is a schematic structural diagram of the synchronous pulley part of the servo motor;

[0024] In the figure, 1 is the housing of the shearing equipment, 2 is the upper tool shaft system, 3 is the lower tool shaft system, 4 is the stroke adjustment mechanism, 5 is the housing of the stroke adjustment mechanism, 6 is the lead screw support bearing, 7 is the ball screw, 8 is the harmonic reducer, 9 is the synchronous pulley of the harmonic reducer module, 10 is the displacement grating scale, 11 is the handwheel, 12 is the servo motor, 13 is the synchronous pulley of the servo motor, and 14 is the handwheel clutch.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Specific embodiments

[0026]

Embodiment 1

[0027] As Figures 1 to 4 shown, a large reduction ratio side clearance adjustment mechanism for a shearing device includes an upper tool shaft system 2, a lower tool shaft system 3, and a stroke adjustment mechanism 4. The upper tool shaft system 2 and the lower tool shaft system 3 are axially parallel, and the stroke adjustment mechanism 4 is connected to one side of the upper tool shaft system 2.

[0028] The stroke adjustment mechanism 4 includes a ball screw 7, and a synchronous pulley 13 of the servo motor and a reduction synchronous pulley module that are driven by a belt.

[0029] As Figure 4 shown, one side of the synchronous pulley 13 of the servo motor is connected to a servo motor 12, and the other side is connected to a handwheel clutch 14. The handwheel clutch 14 is also connected to a handwheel 11.

[0030] One end of the ball screw 7 is connected to the upper tool shaft system 2, and the other end is connected to a reduction synchronous pulley module. A displacement detection device is also connected to the end of the other end of the ball screw 7.

[0031] One side of the synchronous pulley 13 of the servo motor is connected to the servo motor 12, and the servo motor 12 drives the synchronous pulley 13 of the servo motor to rotate.

[0032] The other side of the synchronous pulley 13 of the servo motor is connected to a handwheel 11 through a handwheel clutch 14. During maintenance, the servo motor 12 can be turned off, and the synchronous pulley 13 of the servo motor can be rotated by turning the handwheel 11.

[0033] A deceleration synchronous pulley module is connected to the nut of the ball screw 7. As the servo motor synchronous pulley 13 drives the deceleration synchronous pulley module to rotate, the deceleration synchronous pulley module drives the nut of the ball screw 7 to rotate. The ball screw 7 converts the rotational motion of the nut into the linear motion of the ball screw 7. Then, as the ball screw 7 moves linearly, the upper tool shaft system 2 connected to the ball screw 7 undergoes a linear displacement, thereby changing the side clearance. One end of the ball screw 7 is connected to the upper tool shaft system 2, and a displacement detection device is also connected to the other end to detect the displacement of the ball screw 7.

[0034] As Figure 1 shown, the upper tool shaft system 2 and the lower tool shaft system 3 are connected to the shearing equipment housing 1, and the shearing equipment housing 1 provides support for the upper tool shaft system 2 and the lower tool shaft system 3.

[0035]

Embodiment 2

[0036] As Figures 1 to 4 shown, on the basis of Embodiment 1, the displacement detection device is a transverse displacement grating scale 10. The displacement detection device is a displacement grating scale 10 for detecting the transverse displacement.

[0037] The stroke adjustment mechanism 4 further includes a PLC controller, which is electrically connected to the displacement detection device and the servo motor 12 respectively. The stroke adjustment mechanism 4 further includes a PLC controller. The controller detects the displacement transmitted by the displacement detection device to control the servo motor 12. When the designed displacement is reached, the rotation of the servo motor 12 is stopped to achieve closed-loop control.

[0038] As Figure 2 shown, the stroke adjustment mechanism 4 further includes a stroke adjustment mechanism housing 5. The ball screw 7 and the deceleration synchronous pulley module are both arranged inside the stroke adjustment mechanism housing 5. Among them, a screw support bearing 6 is also connected to the ball screw 7, and the screw support bearing 6 is connected to the inner wall of the stroke adjustment mechanism housing 5.

[0039] The stroke adjustment mechanism 4 further includes a stroke adjustment mechanism housing 5. The ball screw 7 and the deceleration synchronous pulley module are both arranged in the space inside the stroke adjustment mechanism housing 5, while the whole of the servo motor synchronous pulley 13, the servo motor 12, the handwheel clutch 14 and the handwheel 11 is located outside the stroke adjustment mechanism housing 5 and is connected to the stroke adjustment mechanism housing 5 through a bracket. The whole of the servo motor synchronous pulley 13, the servo motor 12, the handwheel clutch 14 and the handwheel 11 hangs outside the stroke adjustment mechanism housing 5.

[0040] The screw support bearing 6 is connected inside the stroke adjustment mechanism housing 5. The ball screw 7 passes through the screw support bearing 6, and the screw support bearing 6 provides support for the ball screw 7.

[0041] As Figure 3 andFigure 4 As shown in the figure, the deceleration synchronous pulley module includes a harmonic reducer 8 and a synchronous pulley 9 of the harmonic reducer module. The servo motor synchronous pulley 13 is driven by a belt to the synchronous pulley 9 of the harmonic reducer module. The synchronous pulley 9 of the harmonic reducer module is connected to the harmonic reducer 8, and the harmonic reducer 8 is connected to the nut of the ball screw 7.

[0042] The synchronous pulley 9 of the harmonic reducer module is driven by a belt to the servo motor synchronous pulley 13, and then the synchronous pulley 9 of the harmonic reducer module is connected to the harmonic reducer 8. The harmonic reducer 8 is connected to the nut of the ball screw 7. The servo motor synchronous pulley 13 drives the synchronous pulley 9 of the harmonic reducer module to rotate synchronously. The synchronous pulley 9 of the harmonic reducer module drives the harmonic reducer 8 to rotate. At the same time, after the harmonic reducer 8 performs a large reduction ratio reduction, it rotates the nut of the ball screw 7 to realize a higher-precision control of the side clearance.

[0043]

Embodiment 3

[0044] As Figures 1 to 4 shown, a method for using a large reduction ratio side clearance adjustment mechanism of a shearing device includes the following steps.

[0045] The first step is the ratio of side clearance change to the displacement of the upper tool shaft system. The side clearance change of the shearing device is linearly proportional to the displacement of the upper tool shaft system 2. The measured ratio is a, then dip = P * a, where dip is the actual value of the side clearance and P is the displacement of the upper tool shaft system. According to actual use, due to the different sizes and specifications of the synchronous pulley 9 of the harmonic reducer module, the harmonic reducer 8, and the servo motor synchronous pulley 13, when the servo motor 12 of different side clearance adjustment mechanisms rotates to the same extent, the linear displacement of the ball screw 7 is different. First, measure that the side clearance change of the shearing device is linearly proportional to the displacement of the upper tool shaft system 2, and the measured ratio is a. Then, according to the formula dip = P * a, it can be known how far the ball screw 7 needs to displace to achieve the required side clearance length.

[0046] The second step is to calculate the displacement of the upper tool shaft system. When the actual value of the required side clearance is calculated according to the calculation in the first step, the displacement required for the upper tool shaft system 2 is obtained.

[0047] The third step is the displacement of the upper tool shaft system. The PLC controller is used to control the servo motor 12 to drive the servo motor synchronous pulley 13. The servo motor synchronous pulley 13 drives the harmonic reducer 8, the synchronous pulley 9 of the harmonic reducer module, and the ball screw 7 to rotate. The ball screw 7 converts the rotational motion of the nut into the linear motion of the screw, so that the upper tool shaft system 2 generates an axial displacement. During this period, the displacement grating ruler 10 detects the displacement of the ball screw 7 and the upper tool shaft system 2 and feeds it back to the PLC controller.

[0048] Start the servo motor 12 to drive the servo motor synchronous pulley 13. The servo motor synchronous pulley 13 drives the harmonic reducer 8, the harmonic reducer module synchronous pulley 9, and the ball screw 7 to rotate in sequence. The ball screw 7 pushes the upper tool shaft system 2 to displace, and the side clearance changes. After the displacement grating ruler 10 detects that the displacement reaches the set value, the PLC controller shuts down the servo motor 12, and the side clearance adjustment is completed.

[0049] During maintenance, shut down the servo motor 12, and drive the servo motor synchronous pulley 13 to rotate through the handwheel clutch 14 and the handwheel 11 to achieve manual control of the side clearance. Rotate the servo motor synchronous pulley 13 through the handwheel 11 during repair.

[0050] The components and structures not described in detail in this embodiment belong to the well-known components, common structures, or common means in this industry, and will not be described one by one here.

Claims

1. A large reduction ratio side clearance adjustment mechanism for a shearing device, characterized in that: It includes an upper tool shaft system (2), a lower tool shaft system (3) and a stroke adjustment mechanism (4). The upper tool shaft system (2) and the lower tool shaft system (3) are axially parallel. The stroke adjustment mechanism (4) is connected to one side of the upper tool shaft system (2). The stroke adjustment mechanism (4) includes a ball screw (7), and a servo motor synchronous pulley (13) and a reduction synchronous pulley module that are driven by a belt with each other. One side of the servo motor synchronous pulley (13) is connected to a servo motor (12), and the other side is connected to a handwheel clutch (14). The handwheel clutch (14) is also connected to a handwheel (11). One end of the ball screw (7) is connected to the upper tool shaft system (2). A reduction synchronous pulley module is connected to the nut of the ball screw (7). A displacement detection device is also connected to the end of the other end of the ball screw (7). The reduction synchronous pulley module includes a harmonic reducer (8) and a harmonic reducer module synchronous pulley (9). The servo motor synchronous pulley (13) is driven by a belt with the harmonic reducer module synchronous pulley (9). The harmonic reducer module synchronous pulley (9) is connected to the harmonic reducer (8). The harmonic reducer (8) is connected to the nut of the ball screw (7). The displacement detection device is a transverse displacement grating scale (10).

2. The large reduction ratio side clearance adjustment mechanism for a shearing device according to claim 1, characterized in that: The stroke adjustment mechanism (4) further includes a PLC controller, and the PLC controller is electrically connected to the displacement detection device and the servo motor (12) respectively by electrical signals.

3. The large reduction ratio side clearance adjustment mechanism for a shearing device according to claim 1, characterized in that: The stroke adjustment mechanism (4) further includes a stroke adjustment mechanism housing (5). The ball screw (7) and the reduction synchronous pulley module are both arranged inside the stroke adjustment mechanism housing (5). A lead screw support bearing (6) is also connected to the ball screw (7), and the lead screw support bearing (6) is connected to the inner wall of the stroke adjustment mechanism housing (5).

4. A method for using the large reduction ratio side clearance adjustment mechanism for a shearing device according to any one of claims 1-3, characterized in that, It includes the following steps: The first step is to determine the ratio of the side clearance change to the displacement of the upper tool shaft system. The side clearance change of the shearing equipment is linearly proportional to the displacement of the upper tool shaft system (2). The measured ratio is a, then dip = P * a, where dip is the actual value of the side clearance and P is the displacement of the upper tool shaft system. The second step is to calculate the displacement of the upper tool shaft system. When the actual value of the required side clearance is calculated according to the formula in the first step, the required displacement of the upper tool shaft system (2) is obtained. The third step is the displacement of the upper tool shaft system. The PLC controller controls the servo motor (12) to drive the servo motor synchronous pulley (13). The servo motor synchronous pulley (13) drives the harmonic reducer (8), the harmonic reducer module synchronous pulley (9) and the nut of the ball screw (7) to rotate. The nut of the ball screw (7) converts the rotational motion into the linear motion of the ball screw, so that the upper tool shaft system (2) generates an axial displacement. During this period, the displacement grating scale (10) detects the displacement of the ball screw (7) and the upper tool shaft system (2) and feeds it back to the PLC controller.

5. The method for using the large reduction ratio side clearance adjustment mechanism for a shearing device according to claim 4, characterized in that: During maintenance, the servo motor (12) is turned off, and the servo motor synchronous pulley (13) is driven by the handwheel clutch (14) and the handwheel (11) to achieve manual control of the side clearance.

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