JPH04300196A - Cutter unit assembling method - Google Patents

Abstract

PURPOSE:To even the contact of respective cutters, in a slitter by which a material to be cut is slit into a plurality of strips, by measuring the force required for the movement of the respective cutters on one shaft when the respective cutters are pushed on the respective cutters on the other shaft, and by judging the state of contact between cutters through the measured force. CONSTITUTION:When the cutters 7 of a first shaft 2 in a slitter and the cutters 10 of a second shaft 3 are combined by bringing them into contact with each other, first, a screw member 5 is tightened via a bearing 4 to move the first shaft 2 in the direction of A, so that the cutters 7 fitted on the first shaft 2 are brought close to the cutters 10 fitted on the second shaft 3. At that time, the pressure when the outer circumferential parts of the cutters 7 are pressed and brought into contact with the outer circumferential parts of the cutters 10 is estimated by measuring the tightening force of the screw member 5. When the tightening force of the screw member 5 reaches a precalculated value, it is judged that the cutters 7 are brought into contact with the cutters 10 with a proper force, and the tightening of the screw member 5 is stopped.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a cutter unit by bringing a pair of cutters into contact with each other in a slitter for slitting a material to be cut into a plurality of strips.

0002

[Prior Art] For example, as a slitter for slitting a continuous amorphous alloy ribbon into a plurality of thin strips, a plurality of circular thin plates are arranged on a first axis and a second axis arranged in parallel. cutters are installed at intervals in the axial direction, and the outer periphery of each cutter on the first shaft and the outer periphery of each cutter on the second shaft are overlapped in the axial direction to form a plurality of sets of cutter units. However, some cutter units cut the ribbon into multiple thin sections.

In order to perform slitting with high precision in this slitter, it is important to precisely combine the cutter on the first axis and the cutter on the second axis for each cutter unit. For example, when slitting a hard and extremely thin ribbon (several tens of microns) such as an amorphous alloy ribbon, the cutter unit used requires a pair of cutters to be assembled in contact with each other with zero clearance. ing.

Conventionally, in order to bring the cutter of the first shaft into contact with the cutter of the second shaft in the cutter unit, the method shown in FIG.
The method shown is adopted. Slitter frame a
A first axis b and a second axis c are provided in parallel. The first shaft b is moved in the axial direction by a screw mechanism d provided in the frame a, and the plurality of cutters e attached to the first shaft b are moved to the second shaft c.
The point where the cutter f comes into contact with the cutter f is set as the zero point. The zero point position can be determined by visual inspection, by rotating the cutter e and using the position at which the cutter f rotates as a reference, or by electrically detecting the position. At this zero point position, the first shaft b is moved by several microns to several tens of microns to press each cutter e against the corresponding cutter f. Here, the distance of movement of the cutter e is measured by bringing the dial gauge g into contact with the side surface of the cutter e. The reason for performing this operation is that when there are a plurality of cutter units consisting of cutter e and cutter f, the zero points of all the cutter units do not necessarily coincide due to the accumulation of dimensional errors and assembly errors of each set of cutter units. Therefore, the aim is to absorb these errors and ensure zero clearance for all cutter units.

[0005]

SUMMARY OF THE INVENTION This conventional assembly method has the following problems.

[0006] Since the outer circumference of the cutter e on the first axis b and the outer circumference of the cutter f on the second axis c wear out as the slitting process progresses,
The outer peripheries (blade portions) of these cutters e and f are occasionally ground. Grinding the outer peripheries of cutters e and f reduces the diameter of the cutters. As the diameters of the cutters e and f decrease, the contact pressure between the pair of cutters constituting the cutter unit increases when set using the conventional method. As a result, the load placed on the blades of the cutters e and f increases, the blades wear out faster, and the lifespan of the cutters e and f is shortened.

In the conventional method, cutters e, f, cutter e
, f cannot be avoided, and errors in the finishing accuracy of the shapes of the spacers and shafts that define the spacing between them, and the assembly accuracy of the spacing between each cutter when these are assembled, cannot be avoided. It is difficult to accurately determine the contact point (zero point) between e and the cutter f of the second axis c, and variations due to work are likely to occur. For this reason, when an operation is performed to bring the cutter e of the first axis b into contact with the cutter f of the second axis c after setting the zero point, the contact of the cutters of each cutter unit may become uneven.

The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a cutter unit assembly method that can accurately set the contact between the cutter on one axis and the cutter on the other axis. .

[0009]

[Means for Solving the Problems] In order to achieve the above object, the cutter unit assembly method of the present invention arranges and fixes a plurality of cutters at intervals in the axial direction on one shaft, and A plurality of cutters are arranged and fixed at intervals in the axial direction on the other axis parallel to the other axis, and the outer periphery of each cutter on one axis is overlapped in the axial direction with the outer periphery of each cutter on the other axis. In a slitter that configures a plurality of cutter units by combining them together and slits a material to be cut into a plurality of strips using these cutter units, the one shaft is moved in the axial direction to cause each cutter to move in the axial direction. When pressing against each cutter on the shaft, measure the force required to move the one shaft toward the cutter on the other shaft, and use the measured force as a reference to determine the force on the one shaft. This method is characterized by determining the state of contact between each cutter and each cutter on the other shaft.

0010

[Operation] When one shaft is moved to bring its cutter into contact with the cutter on the other shaft, that cutter contacts the cutter on the other shaft with a force that moves the one shaft. The cutter on one axis experiences a reaction force from the cutter on the other axis. The reaction force experienced by the cutter on one axis from the cutter on the other axis acts on one axis. This force becomes the pressure that brings the cutter on one shaft into contact with the cutter on the other shaft. The force that moves one axis will reflect the pressure with which both cutters are in contact. Therefore, when moving one shaft in the axial direction and pressing its cutter against the cutter of the other shaft, the force required to move the one shaft toward the other shaft is measured. The contact state between the cutter on one shaft and the cutter on the other shaft can be determined based on the magnitude of the force applied. In other words, if you calculate in advance the contact pressure required to bring each cutter on one shaft into contact with each cutter on the other shaft, and move one shaft with this amount of force, the Each cutter and each cutter on the other shaft can be brought into contact with each other reliably.

According to this method, the contact pressure can be adjusted and kept constant even as the diameter of the cutter decreases. There is no need to know the zero point where the cutter on one axis contacts the other axis, and therefore, compared to conventional methods, there are fewer errors in setting and the setting work is easier.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The configuration of a slitter to which the assembly method of the present invention is applied will be explained with reference to FIG.

In the figure, 1 is a frame, 2 is a first shaft provided horizontally on the frame 1, and 3 is a second shaft provided horizontally on the frame 1 below the first shaft 2. is the axis of These first shaft 2 and second shaft 3 are rotatably supported by the frame 1 with bearings 4 attached to both ends, and each shaft 2,
3 are provided so as to be movable in the axial direction by a combination of screw members 5 and 6, respectively. That is, in the part of the frame 1 through which one end of each shaft 2, 3 is inserted, there is a pair of cylindrical screw members 5, 6 sandwiching the bearing 4 attached to the shafts 2, 3.
are screwed together, and the shafts 2 and 3 are inserted through these screw members 5 and 6. In addition, in FIG. 1, the bearing 4 supporting the second shaft 3
not shown. These screw members 5 and 6 are cylindrical in shape, and have threads formed on their outer peripheries. The threads of these screw members 5 and 6 are formed in opposite directions, and one screw member 5 moves in the direction A in the figure by rotation in the tightening direction, and the other screw member 6 moves in the direction B in the figure by rotation in the tightening direction. These screw members 5 and 6 are adapted to move the shafts 2 and 3 in the axial direction via the bearing 4 by axial movement. Further, a plurality of cutters 7 are attached to the first shaft 2 using cylindrical spacers 8 and spaced apart from each other in the axial direction. A collar 2a is formed on the shaft 2 to hold the spacer 8, and a nut 9 is screwed onto the shaft 2. Similarly, a plurality of cutters 10 are attached to the second shaft 3 using spacers 11 and spaced apart from each other in the axial direction. A collar 3a is attached to the shaft 3 to hold the spacer 11.
A nut 12 is screwed onto the shaft 3. The outer periphery or blade portion of each cutter 7 on the first shaft 2 and the outer periphery or blade portion of each cutter 10 on the second shaft 3 are overlapped in the axial direction. As a result, each cutter 7 of the first shaft 2 and each cutter 10 of the second shaft 3 facing each other are combined to form a plurality of cutter units arranged in the axial direction. The shafts 2 and 3 can be removed from the frame 1 in order to attach and detach the cutters 7 and 10. Further, each of the shafts 2 and 3 is rotated by a rotating device (not shown). This slitter
A method of assembling the cutter 7 of the first shaft 2 and the cutter 10 of the second shaft 3 in contact with each other in the cutter unit will be described.

For example, as shown in FIG. 1, it is assumed that the first shaft 2 moves the cutter 7 in the axial direction. The screw member 5 is rotated in the tightening direction to move the first shaft 2 in the direction A in the figure via the bearing 4. As the first shaft 2 moves, the cutter 7 attached to the first shaft 2 moves in a direction approaching the cutter 10 attached to the second shaft 3. As a result, the outer circumference of the cutter 7 of the first shaft 2 is pressed against the outer circumference of the cutter 10 of the second shaft 3 and comes into contact with it. The pressure with which the cutter 7 contacts the cutter 10 at this time corresponds to the force for rotating and tightening the screw member 5 in the tightening direction=rotational torque. When the cutter 7 of the first shaft 2 is brought into contact with the cutter 10 of the second shaft 3, the cutter 7 of the first shaft 2 receives a reaction force from the cutter 10 of the second shaft 3. This reaction force is in the opposite direction and has the same magnitude as the pressure with which the cutter 7 of the first shaft 2 contacts (presses) the cutter 10 of the second shaft 3. The reaction force received by the cutter 7 of the first shaft 2 from the cutter 10 of the second shaft 3 acts on the first shaft 2, and further loads the screw member 5 that moves the first shaft 2. Acts as.

That is, the force for tightening the screw member 5 to move the first shaft 2 in the axial direction reflects the contact pressure of the cutter 7 of the first shaft 2 contacting the cutter 10 of the second shaft 3. It can be said that Therefore, by measuring the tightening force on the screw member 5, the contact pressure between the cutter 7 of the first shaft 2 and the cutter 10 of the second shaft 3 can be estimated, and the contact state can be estimated. At the beginning of the tightening operation using the screw member 5, each cutter 7 of the first shaft 2 and each cutter 10 of the second shaft 3 are only partially in contact, and the contact pressure is small. As the tightening operation by the screw member 5 progresses,
The contact between the cutters 7 and 10 increases, and the contact pressure increases. Accordingly, the tightening force of the screw member 5 increases. For this reason, all the cutters 7 of the first shaft 2 were
The tightening force of the screw member 5 corresponding to the reaction force that the screw member 5 receives when it comes into contact with all the cutters 10 of the second shaft 3 is calculated in advance. Therefore, when the tightening force of the screw member 5 reaches a pre-calculated magnitude, all the cutters 7 on the first shaft 2 come into contact with all the cutters 10 on the second shaft 3. That is, by tightening the screw member 5 to a pre-calculated tightening force, all the cutters 7 on the first shaft 2 can be brought into contact with all the cutters 10 on the second shaft 3. can. A specific method includes, for example, the method shown in FIG.

The threaded member 5 of the first shaft 2 is provided with a pin 13 extending in the radial direction. The push gauge 14 is fixed, the contact 14a of the push gauge 14 is brought into contact with the pin 13, and the screw member 5 is rotated in the tightening direction. At this time, the force required to rotate the screw member 5 in the tightening direction is measured as a tightening force using a push gauge 14. The rotational torque of the screw member 5 when moving the first shaft 2 in the axial direction is the force F of the contact 14a of the push gauge 14 pushing the pin x the force F of the push gauge 14 from the center of the screw member 5 to the pin 13. It is determined by the distance s between the contacts of the contactor 14a. Therefore, based on this formula F×s, all the cutters 7 on the first axis 2 are equal to all the cutters 10 on the second axis 3.
The screw member 5 is rotated in the tightening direction by pushing the pin 13 with a force F necessary to bring it into contact with the screw member 5. This force F is measured with a push gauge 14. For example, if S is 90 mm, pin 13 is calculated in advance using push gauge 14.
Press with the value. Note that when performing this operation, frame 1
Do this by laying it on its side. Alternatively, it is also possible to use the frame 1 in an assembled state, that is, a state in which the frame 1 is attached to the device.

FIG. 3 shows the relationship between the tightening force of the screw member 4 and the amount of pressing of the cutter 7 of the first shaft 2 against the cutter 10 of the second shaft 3. This diagram is a dial game
This is an example of actual measurement by Ji.

In this way, the outer circumference of each cutter 7 on the first shaft 2 and the outer circumference of each cutter 10 on the second shaft 3 are brought into contact with each other and combined with zero clearance to form a plurality of cutter units. .

Then, using this slitter, for example, an amorphous alloy ribbon is slit into a plurality of elongated parts. That is, the amorphous alloy ribbon is cut between the cutter units. The cutting margin for the amorphous alloy ribbon is the sum of the thicknesses of the cutters 7 and 10.

In the assembly method described in this embodiment, the contact state between the cutters 7 and 10 is determined based on the contact pressure between the cutters 7 and 10. There is no need to know the zero point where the assembly contacts 10, and therefore there is no error in setting compared to conventional assembly methods, and the setting work is easier.

Due to the slits, the outer circumferential portions of the cutters 7 and 10 are ground as they wear out due to the slits. Therefore, if the amount of movement of each axis 2, 3 is constant, the cutters 7, 10
As the diameter of the cutters 7, 10 decreases, the magnitude of the contact pressure of the cutters 7, 10 in contact with each other varies. In this case, the screw member 5
Alternatively, the magnitude of the contact pressure between the cutters 7 and 10 can be adjusted to a constant value by measuring the tightening force of the screw member 6 and rotating the screw member 5 or 6. Therefore, the cutters 7 and 10 can always be maintained at a constant contact pressure, that is, a constant contact state. The wear state of the cutters 7, 10 can be determined from the state of the edges of the slit material, and the magnitude of the contact pressure of the cutters 7, 10 can be adjusted according to the wear state. From these facts, the lifespan of the cutters 7 and 10 can also be determined. Note that the present invention is not limited to the embodiments described above, and can be implemented with various modifications.

For example, the device for moving the first shaft 2 and the second shaft 3 in the axial direction is not limited to one using a screw member, but may be one using a hydraulic cylinder, for example.

[0023]

As explained above, according to the present invention, a slitter is provided in which the outer periphery of the cutter on one shaft and the outer periphery of the cutter on the other shaft can be brought into contact accurately and easily. A cutter unit assembly method can be provided.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a slitter targeted by the assembly method of the present invention.

FIG. 2 is a diagram showing an embodiment of the assembly method of the present invention.

FIG. 3 is a diagram showing the relationship between the tightening force of a screw member and the amount of pressing of one cutter against the cutter of the other shaft.

FIG. 4 is a diagram showing an example of a conventional assembly method.

[Explanation of symbols]

2, 3... Shaft, 5, 6... Screw member, 7, 10... Cutter.

Claims (1)

[Claims] Claim 1: A plurality of cutters are arranged and fixed at intervals in the axial direction on one axis, and a plurality of cutters are arranged and fixed at intervals in the axial direction on the other axis parallel to the one axis. A plurality of cutter units are constructed by axially overlapping the outer periphery of each cutter on one shaft and the outer periphery of each cutter on the other shaft with the arrangement fixed, and these cutter units cut the material to be cut. In a slitter that slits into a plurality of strips, when the one shaft is moved in the axial direction and each cutter is pressed against each cutter on the other shaft, the one shaft is pressed against the cutter on the other shaft. The method is characterized in that the force required to move the cutter toward the shaft is measured, and the contact state between each cutter on the one shaft and each cutter on the other shaft is determined based on the magnitude of the measured force. Cutter unit assembly method.