CN103230939B - Silking machine spindle assembly, silking machine and method for balancing dynamic unbalance of silking machine - Google Patents

Abstract

The invention discloses a method for balancing unbalanced spinning machine, and also discloses a spindle assembly of a spinning machine, which includes a spindle and a spinning tube fixed on the main shaft, and the spindle is provided with an eccentric mass of a balancing spinning tube The spinning tube balance block of the present invention discloses a spinning frame with adjustable balance, including a casing, a motor, a driving bevel gear connected to the motor rotor through a coupling, and a driven bevel gear fixed on the main shaft. The driven bevel gear meshes with the driving bevel gear, and the main shaft is installed on the casing through bearings; the present invention utilizes that when the spinning tube passes through the steel, the coordinates of the center of mass of the rolled pieces of various specifications in the spinning tube are all the same and unchanged, and The same characteristics as the coordinates of the center of mass of the laying pipe, by setting a balance weight on the main shaft to balance the laying pipe, the rolled piece in the laying pipe and the eccentric mass of the main shaft, the vibration of the laying machine is reduced during operation, and the spinning The rotating speed of the main shaft of the machine can be further increased, which can reduce the failure rate of the laying machine and increase the service life of the laying machine.

Description

Laying head spindle assembly, laying head and method for balancing unbalanced laying motor

technical field

The invention relates to a steel rolling machine, in particular to a laying machine.

Background technique

The wire laying machine is the key equipment for spinning the rolled wire into coils for collection in high-speed wire rod production. The rolled piece is pinched by the pinch roller in front of the laying head, enters the high-speed rotating laying head, and is deformed by the force of the laying pipe, turning the high-speed straight-moving rolled piece into a nearly stationary circle. Among them, the rotating speed of the laying head can reach about 2200r/min, and the rotating diameter is large, about 1070mm, and the rolling line speed at this time can reach about 120m/s. For such a high-speed rolling condition, the laying head must have a high dynamic balance capability to reduce the vibration of the laying head.

The existing methods to ensure the dynamic balance ability or reduce the vibration of the laying machine are as follows: First, as described in the patent 200580005727.8, the rotor in the laying machine adopts magnetic bearing or hydraulic damping bearing, and through certain control or bearing The setting realizes the vibration reduction of the laying head; the second is, as described in the patent 201110195390.9, the dynamic balance of the laying head is corrected through the on-site dynamic balance instrument. However, the bearing vibration reduction method adopted in the first method has complicated devices and high bearing manufacturing costs; the on-site dynamic balancing method adopted in the second method generally requires double-sided dynamic balancing, and the balancing process is cumbersome, as described in patent 201120121776. The rotor shaft of the machine also needs to be equipped with complex special tooling, resulting in longer downtime. Regardless of the balance and vibration reduction measures of method 1 or method 2, neither eliminates the vibration from the mechanism of laying machine vibration, but uses vibration-damping bearings or on-site dynamic balance to overcome and reduce the vibration that has already occurred. vibration.

The mechanism of the vibration of the laying head is analyzed mainly as follows: the laying pipe, which is a key component in the laying head, is used to form continuous straight rolled products into coils. Balanced parts have mass eccentricity. When the rolled piece passes through the spinning tube, the rolled piece that is in the spinning tube and has the same shape as the spinning tube will also have mass eccentricity, which will cause the rotor of the spinning machine to be out of alignment. Vibration is formed due to balance, and there are many specifications of the rolled piece, the range is wide, the diameter of the rolled piece φD can range from φ5mm to φ25mm, the eccentric mass is large, and it is difficult to carry out on-site dynamic balance. The vibration of the wire machine is mainly caused by the unbalanced weight of the rolled piece in the spinning tube when passing the steel.

Contents of the invention

In view of this, the purpose of the present invention is to provide a method for balancing the unbalanced spinning machine, a spinning machine spindle assembly and a spinning machine, so as to solve the problems caused by the eccentricity of the existing spinning machine. The disadvantage of large vibration, and then increase the running speed of the laying machine.

The unbalanced method for balancing silk-spinning motor of the present invention comprises the following steps:

a. Establish a three-dimensional cylindrical coordinate system with the axis of the main shaft of the laying machine as the Z axis of the three-dimensional coordinates, and use r to represent the radial distance coordinates from the midpoint of the three-dimensional cylindrical coordinate system to the Z axis, and use θ to represent the three-dimensional cylindrical coordinate system The azimuth coordinates of the point, and z represents the coordinates of the center point in the three-dimensional cylindrical coordinate system in the Z-axis direction, finds out the coordinate position of the centroid of the spinning pipe in the three-dimensional cylindrical coordinate system, and calculates the coordinates of the spinning pipe centroid as (r1, theta1, z1);

b. Set the spinning tube balance weight on the outer surface of the main shaft of the spinning machine, the coordinates of the center of mass of the spinning tube balance weight are (r2, θ2, z2), where θ2=θ1+180°, z2=z1;

c. Set the adjustment balance block on the balance block of the spinneret to balance the rolling piece in the spinneret. The coordinates of the center of mass of the adjuster balance block are (r3, θ3, z3), and the adjustment balance block and the balance block of the spinneret Detachable fixed connection, where θ3=θ2=θ1+180°, z3= z2.

Further, the method for balancing unbalanced spinning machine also includes step d: find out the coordinates of the center of mass (r4, θ4, z4) of the spinning pipe installation device fixed on the main shaft of the laying head, and the Set the spindle balance weight of the balance spinning pipe installation device on the top, and the coordinates of the spindle balance weight are (r5, θ5, z5), where θ5=θ4 +180°, z5=z4.

The main shaft assembly of the spinning machine of the present invention comprises a main shaft and a spinning pipe fixed on the main shaft. The spinning pipe balance block for balancing the eccentric mass of the spinning pipe is arranged on the main shaft, and passes through the center of mass of the spinning pipe balance block and the spinning pipe. The line at the center of mass of the tube intersects the axis of the main shaft perpendicularly.       

Further, the balance block of the spinneret is provided with an adjustment balance block to balance the eccentric mass of the rolled piece in the spinneret. The adjustment balance block and the balance block of the spinneret are detachably fixedly connected, and through the adjustment balance block The line between the center of mass and the center of mass of the laying pipe intersects perpendicularly to the axis of the main shaft.

Further, the main shaft is a hollow shaft, and a spinning tube installation device is fixedly arranged on the main shaft, and the spinning tube installation device includes a spiral mounting plate, and grooves for fixing the spinning tube are arranged on the edge of the spiral mounting plate and pipe clamps, the laying pipe is located in the groove and fixed by the pipe clamps.

Further, the main shaft is also provided with a main shaft balance weight to balance the eccentric mass of the laying pipe installation device, and the straight line connecting the center of mass of the laying pipe installation device and the center of mass of the main shaft balance weight perpendicularly intersects with the axis of the main shaft.

The present invention has the laying head of the main shaft assembly of the laying head, comprising a casing, a motor, a driving bevel gear connected to the motor rotor through a coupling and a driven bevel gear fixed on the main shaft, the driven bevel gear and the driving The bevel gear meshes, and the main shaft is mounted on the box through bearings.

Further, the laying machine also includes a protective cover, and the part of the laying pipe and the main shaft outside the casing is in the protective cover.

Beneficial effects of the present invention: the present invention balances the spinneret, the rolling piece in the spinneret and the eccentric mass of the main shaft on the main shaft, and when the spinneret passes through the steel, the parts of the rolled pieces of various specifications are located in the spinneret. The coordinates of the center of mass are the same and unchanged, and have the same characteristics as the coordinates of the center of mass of the laying pipe, so that the balance weight of the laying pipe and the adjustment balance weight are arranged on the main shaft, so that the vibration of the laying machine is reduced during work, and the spinning The spindle speed of the wire laying machine can be further increased, which can reduce the failure rate of the laying head and increase the service life of the laying head; through the set detachable adjustment balance weight, when the production line changes the rolling specification and the laying head is stopped, it can be quickly replaced. The pre-calculated quality of the adjustment balance weight required for the rolled piece corresponding to the rolling specification is fast, simple and reliable, and it is easy to achieve the balance of the laying machine or Adjustment of vibration.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the spindle assembly of the laying head of the present invention;

Fig. 2 is a schematic diagram of the coordinate position of the centroid m1 of the spinning pipe 2 in the Z direction;

Fig. 3 is the schematic diagram of the coordinate projection position of spinning tube 2 centroid m1 on the X Y plane;

Fig. 4 is a schematic diagram of the layout position of the spinning tube balance weight and the adjustment balance weight;

Fig. 5 is a schematic diagram of the arrangement position of the main shaft balance weight;

Figure 6 is a schematic structural view of the laying machine.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the figure, the method for balancing the unbalanced spinning machine in this embodiment includes the following steps:

a. Establish a three-dimensional cylindrical coordinate system with the Z-axis of the three-dimensional coordinates on the axis line of the main shaft 1 of the laying machine, and use r to represent the radial distance coordinates from the midpoint of the three-dimensional cylindrical coordinate system to the Z axis, and use θ to represent the three-dimensional cylindrical coordinate system The azimuth coordinates of the midpoint, and represent the coordinates of the midpoint of the three-dimensional cylindrical coordinate system in the Z-axis direction with z, find out the coordinate position of the centroid of the spinning pipe 2 in the three-dimensional cylindrical coordinate system, and calculate the centroid of the spinning pipe. The coordinates are (r1, θ1, z1), and the specific value of the coordinates of the center of mass of the spinning pipe can be calculated by three-dimensional simulation and other methods in the actual implementation;

b. Set the spinneret balance block 3 on the outer surface of the main shaft of the laying machine, the coordinates of the center of mass of the spinneret balance block are (r2, θ2, z2), where θ2=θ1+180°, z1=z2. In the specific implementation, the mass m1 of the spinning tube and the mass m2 of the spinning tube balance weight satisfy: m2=m1×r1/r2, r2 is the center of mass of the spinning tube balancing weight 3 installed on the main shaft 1 to the axis of the main shaft 1 The distance between the center line and the size of r2 can be designed and adjusted according to specific installation needs.

Through this method, the setting position of the balance weight of the spinneret on the main shaft can be accurately found, and the mass of the balance weight of the spinneret can be determined, thereby reducing and eliminating the vibration caused by the eccentric mass of the spinneret 2 when the main shaft 1 rotates .

The method for balancing spinning motor unbalance also includes step c: setting an adjusting balance block 4 on the balance block 3 of the spinning tube to balance the rolling piece in the spinning tube, and the coordinates of the center of mass of the adjusting balance block 4 are (r3, θ3 , z3), the adjusting balance weight 4 is detachably fixedly connected with the spinning pipe balance weight 3, wherein θ3=θ2, z3=z2. In the specific implementation, the mass m4 of the adjustment balance weight 4 and the mass m3 of the rolled piece in the spinning pipe meet: m4=m3×r1/r3, r3 is the center of mass of the adjustment balance weight 4 installed on the main shaft 1 to the main shaft 1 axis The distance of the center line, in the present embodiment, the coordinates of the center of mass of the adjustment balance weight 4 are located on the balance weight 3 of the spinning pipe, which is convenient for the installation and setting of the balance weight 3 and the adjustment balance weight 4 of the spinning pipe.

This method utilizes the characteristics that the mass eccentric coordinates of the rolled pieces of various specifications in the spinning tube 2 are the same and unchanged when the spinning tube passes through the steel, and are identical with the coordinates of the center of mass of the spinning tube 2, so that at the same coordinate on the main shaft, The configuration of the adjustment balance weight is carried out. By setting the detachable adjustment balance weight 4, when the production line changes the rolling specifications and the laying head is shut down, the adjustment balance weight 4 required by the pre-calculated corresponding rolling specifications rolling piece can be quickly replaced. Compared with the cumbersome balancing process such as dynamic balancer and double-sided dynamic balancing on site, the balance configuration is fast, simple and reliable, and it is easy to adjust the balance or vibration of the laying machine.

As an improvement to this embodiment, the method for balancing the unbalanced spinning machine also includes step d: find out the coordinates (r4, θ4, z4) of the center of mass of the spinning pipe installation device fixed on the main shaft 1 of the spinning machine. On the main shaft of the laying machine, the main shaft balance weight 7 of the installation device for balancing the spinning tube is set, and the coordinates of the main shaft balance weight 7 are (r5, θ5, z5), where θ5=θ4 +180°, z5=z4; During the implementation, the specific value of the coordinates of the center of mass of the spinning tube installation device can be calculated by using techniques such as three-dimensional simulation. At the same time, the relationship between the mass m6 of the main shaft balance weight 7 and the mass m5 of the spinning tube installation device is: m6=m5×r4/r5, r5 is the distance from the center of mass of the main shaft balance weight 7 installed on the main shaft 1 to the axis line of the main shaft 1, and the size of r5 can be designed and adjusted according to specific installation requirements. This improvement can further reduce the vibration generated by the eccentric mass of the main shaft through the main shaft balance weight 7, which is beneficial to increasing the main shaft speed and prolonging the service life of the laying machine.

The main shaft assembly of the laying machine in this embodiment includes a main shaft 1 and a spinning tube 2 fixed on the main shaft 1. The spinning tube balance block 3 for balancing the eccentric mass of the spinning tube is arranged on the main shaft 1, and the spinning tube passes through the spinning tube. The straight line between the center of mass of the balance weight and the center of mass of the spinning tube intersects perpendicularly with the axis of the main shaft 1.

Since the laying pipe 2 itself is a non-self-balancing part, its center of mass is not on the axis of the main shaft, and there is mass eccentricity. Therefore, when the main shaft 1 rotates, the eccentric mass of the laying pipe 2 will cause a large load on the laying machine. Vibration, which makes the speed of the laying head spindle 1 not too high, and the vibration will also affect the service life of the laying head. In this embodiment, by setting the balance block 3 of the laying tube on the main shaft 1, the dynamic unbalance generated by the mass eccentricity of the spinning tube 2 can be reduced or even eliminated, and the vibration of the laying machine can be reduced, which is beneficial to improving the stability of the main shaft of the laying machine. Rotational speed and service life of the laying head.

In the specific implementation, the position of setting the balance weight 3 of the spinneret on the main shaft 1 and the quality of the balancer 3 of the spinneret can be found through the above-mentioned method of balancing the unbalanced spinneret motor.     

As an improvement to this embodiment, the spinning tube balance block 3 is provided with an adjusting balance block 4 to balance the eccentric mass of the rolled piece in the spinning tube, and the adjusting balancing block 4 and the spinning tube balancing block 3 are detachably fixed connected, and the straight line passing through the centroid of the adjusting balance weight and the spinneret is perpendicular to the axis of the main shaft 1 . In this embodiment, the coordinates of the center of mass of the adjustment balance weight 4 are located on the balance weight 3 of the spinning pipe, which is beneficial to the installation and setting of the adjustment balance weight 4 and the balance weight 3 of the spinning pipe; certainly in different embodiments, the adjustment balance weight 4 to The distance between the spindle axis can also be designed and adjusted according to specific installation needs.

In a specific implementation, the adjustment balance weight 4 can be set in advance according to the different specifications of the rolled pieces produced. When replacing the rolled pieces, the adjustment balance weight 4 of the corresponding quality can be replaced to reduce or even eliminate the spinning. Vibration of the laying head caused by the rolled piece in the tube. The improvement can conveniently and quickly adjust the vibration of the laying machine caused by different rolled pieces, and has good balance adjustment effect and strong practicability.

As an improvement to this implementation, the main shaft 1 is a hollow shaft, and a spinning tube installation device is fixedly installed on the main shaft 1, and the spinning tube installation device includes a spiral mounting plate 5, and the edge of the spiral mounting plate 5 is provided There are grooves 51 and pipe clamps 6 for fixing the spinning pipe 2 , the spinning pipe 2 is located in the groove 51 and fixed by the pipe clamps 6 . Adopting this structure to install the spinneret 2 can ensure that the position of the spinneret 2 will not change during high-speed rotation, and the installation of the spinneret 2 is convenient and simple.

As an improvement to this embodiment, the main shaft 1 is also provided with a main shaft balance weight 7 for balancing the eccentric mass of the spinning tube installation device, and the straight line connecting the center of mass of the spinning tube installation device and the center of mass of the main shaft balancing weight 7 and the line of the main shaft 1 The axis lines intersect perpendicularly. Since the center of mass of the pipe clamp 6 and the spiral mounting plate 5 is not on the axis of the main shaft 1, an unbalanced amount will also be generated during the rotation and cause the vibration of the laying machine. Therefore, setting the main shaft balance weight 7 can further reduce The vibration of the laying head is conducive to increasing the rotating speed of the main shaft 1 and reducing the failure rate of the laying head.

This embodiment has the laying head of the laying head main shaft assembly, including the casing 8, the motor 9, the driving bevel gear 11 connected with the motor rotor through the coupling 10 and the driven bevel gear 12 fixed on the main shaft 1, the said The driven bevel gear 12 meshes with the driving bevel gear 11, and the main shaft 1 is mounted on the casing 8 through a bearing. Because the laying head has an adjustable and balanced laying head spindle assembly, it has less vibration during the production process, and its spindle rotation speed can be higher than that of the existing laying head, and its service life is longer. The failure rate is lower.

As an improvement to the present embodiment, the laying machine also includes a protective cover 13, and the part of the laying tube 2 and the main shaft 1 outside the box body 8 is in the protective cover 13; the protective cover 13 can guide the coiled workpiece, and Isolate the rolling mill to play a role in safe production.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (7)

1. balance the method for Laying head unbalance dynamic, it is characterized in that: comprise the following steps:

A, being three-dimensional coordinate with the spindle axis line of Laying head, Z axis sets up three-dimensional cylinder coordinate system, and represent that three-dimensional cylinder coordinate system mid point is to the radial distance coordinate of Z axis, the azimuthal coordinate representing three-dimensional cylinder coordinate system mid point with θ represent three-dimensional cylinder coordinate system mid point coordinate in the Z-axis direction with z with r, find out the coordinate position of barycenter in three-dimensional cylinder coordinate system of spinneret, and the coordinate counting spinneret barycenter is (r1, θ 1, z1);

B, spinneret balance weight is set on the outerface of spindle of Laying head, the coordinate of described spinneret balance weight barycenter is (r2, θ 2, z2), wherein θ 2=θ 1+180 °, z2=z1;

C, on spinneret balance weight, arrange the adjustment block of rolled piece in balance spinneret, the coordinate of described adjustment block barycenter is (r3, θ 3, z3), described adjustment block is fixedly connected with spinneret balance weight detachable, wherein θ 3=θ 2=θ 1+180 °, z3=z2.

2. balance the method for Laying head unbalance dynamic according to claim 1, it is characterized in that: also comprise steps d: the center-of-mass coordinate (r4 finding out the spinneret erecting device be fixed on Laying head main shaft, θ 4, z4), the main shaft of Laying head arranges the principal axis balance block of balance spinneret erecting device, and the coordinate of described principal axis balance block is (r5, θ 5, z5), wherein θ 5=θ 4+180 °, z5=z4.

3. Laying head spindle assemblies, comprise main shaft and be fixed on the spinneret on main shaft, it is characterized in that: the spinneret balance weight described main shaft being provided with balance spinneret eccentric mass, and cross spinneret balance weight barycenter and the straight line of spinneret barycenter and the axial line of main shaft and intersect vertically; Described spinneret balance weight is provided with the adjustment block of rolled piece eccentric mass in balance spinneret, described adjustment block is fixedly connected with spinneret balance weight detachable, and crosses described adjustment block barycenter and the straight line of spinneret barycenter and the axial line of main shaft intersects vertically.

4. Laying head spindle assemblies according to claim 3, it is characterized in that: described main shaft is hollow shaft, main shaft is fixedly installed spinneret erecting device, described spinneret erecting device comprises spiral installing plate, the seamed edge of described spiral installing plate is provided with groove and the pipe clamp of fixing spinneret, described spinneret is arranged in groove and is fixed by pipe clamp.

5. Laying head spindle assemblies according to claim 4, it is characterized in that: the principal axis balance block described main shaft being also provided with balance spinneret erecting device eccentric mass, connect the barycenter of spinneret erecting device and the straight line of barycenter of principal axis balance block and the axial line of main shaft and intersect vertically.

6. there is the Laying head of arbitrary described Laying head spindle assemblies in claim 3-5, it is characterized in that: comprise casing, motor, the drive bevel gear be connected with rotor by shaft coupling and the driven wheel of differential be fixed on main shaft, described driven wheel of differential engages with drive bevel gear, and described main shaft is arranged on casing by bearing.

7. Laying head according to claim 6, is characterized in that: also comprise protective cover, the part that described spinneret and main shaft are arranged in outside casing is in protective cover.