JPH1177420A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately adjust the gap quantity and the lap quantity of a first and a second cutters by adjusting the axial gap quantity of the cutting edges of the first and second cutters by a gap adjusting device, and adjusting the radial lap quantity of the first and second cutters by a lap adjusting device. SOLUTION: A gap adjusting device 40 minutely displaces a differential element 44 through a differential screw mechanism by rotating a gap adjustment operating element 42 against a first cutter box 12, and minutely displaces a first spindle 15 in the axial direction so as to adjust the gap quantity of first and second cutters 17, 27. Accuracy of the gap quantity depends on only rotating deflection of the first and second spindles 15, 23. A lap adjusting device 50 rotates an eccentric cylinder 51 against a second cutter box 13, and by adjusting the fitting rotational angle position, minutely adjusts the second spindle 23 in the direction perpendicular to the axis so as to adjust the lap quantity of first and second cutters 17, 27. Accuracy of the lap quantity depends only on rotating deflection of the first and second spindles 15, 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting apparatus suitable for use as a side trimmer of a strip-shaped plate such as a steel plate or an aluminum plate.

[0002]

2. Description of the Related Art Conventionally, as a cutting device, a first blade is mounted on a first spindle supported by a first blade box, and a second blade is mounted on a second spindle supported by a second blade box. There is something. In this cutting device, the axial gap amount of the cutting blades of the first and second blades and the radial lap amount of the cutting blades of the first and second blades are determined according to the material, thickness, etc. of the material to be cut. And adjust it.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to adjust the gap amount and the lap amount between the first and second blades with high accuracy in a cutting apparatus.

[0004]

According to the first aspect of the present invention, a first blade is attached to a first spindle supported by a first blade box, and a second blade is supported by a second blade box. In a cutting device in which a second blade is mounted on a main shaft, an outer thread of an outer periphery of a gap adjusting operator is screwed into an inner thread of a first cutter box, and an inner thread of an inner periphery of the gap adjusting operator is screwed. And a differential screw is formed by the external thread and the internal thread of the gap adjusting operator, and the first main shaft and the differential are coupled in their axial directions. Eccentric cylinder is rotatably supported by a second cutter box, and a second
Is rotatably supported, the center of rotation of the eccentric cylinder with respect to the second cutter box is eccentric with respect to the center of rotation of the second spindle with respect to the eccentric cylinder, and the mounting rotation angle position of the eccentric cylinder with respect to the second cutter box And a lap adjusting device that can adjust the axial gap amount of the cutting blades of the first and second blades by the gap adjusting device, and the first and second blades by the lap adjusting device. The amount of lap of the cutting blade in the radial direction can be adjusted.

[0005]

According to the first aspect of the present invention, the following operations are provided. The gap adjusting device rotates the gap adjusting operator with respect to the first cutter box, thereby causing the differential to be minutely displaced by the differential screw mechanism, and by minutely displacing the first spindle in the axial direction. The gap amount between the first and second blades can be adjusted. The first spindle is displaced in the axial direction with high precision by the gap adjusting operator and the differential element, and the precision of the gap amount is equal to the first precision.
And the second spindle only depends on the rotational fluctuation, and the gap amount can be adjusted with high accuracy.

The lap adjusting device rotates the eccentric cylinder with respect to the second cutter box and adjusts the rotational position of the eccentric cylinder so that the second main shaft is slightly displaced in the direction perpendicular to the axis, and the first and the second eccentric cylinders are slightly displaced. The lap amount of the blade 2 can be adjusted. The second spindle is displaced with high accuracy by the eccentric cylinder in parallel to the direction perpendicular to the axis, and the accuracy of the lap amount depends only on the rotational deviation of the first and second spindles, and the lap amount can be adjusted with high accuracy. .

[0007]

FIG. 1 is a longitudinal sectional view showing a cutting apparatus.
2 is a side view of FIG. 1, FIG. 3 is a view taken along the line III-III of FIG. 1, FIG. 4 is a schematic diagram showing a gap amount and a lap amount of the blade, and FIG. It is a schematic diagram which shows a change of a position.

[0008] As shown in FIGS.
A tool rest 11 has first and second tool boxes 12 and 13 fixedly. The first cutter box 12 has two radial bearings 1
The first main shaft 15 is radially supported via the fourth and fourth 14 and the first main shaft 15 is thrust supported via the thrust bearing 16 incorporated in the differential element 44 described later.
Fixed holder 18 fixed to one end of first spindle 15
It is attached to. The second cutter box 13 radially supports the second main shaft 23 via two outer radial bearings 21 and 21, an eccentric cylinder 51 described later, and two inner radial bearings 22 and 22, and a thrust bearing box. The second main shaft 23 is supported by a thrust bearing 25 incorporated in the thrust bearing 24 in a thrust manner.
Is attached to a fixed holder 26 fixed to one end of the main shaft 23.

The cutting device 10 supports a drive shaft 31 on a tool post 11 and pulleys 31 A provided on the drive shaft 31.
Pulley 15A provided on first main shaft 15, second main shaft 23
, A timing belt 33 is wound around an idle pulley 32 and an idle pulley 32 so that the rotational force of the drive shaft 31 can be transmitted to the first and second main shafts 15 and 23 without generating vibration and heat.

However, the cutting device 10 has the gap adjusting device 40 and the lap adjusting device 50 as follows.

The gap adjusting device 40 includes a first cutter box 1.
The outer thread 43A of the outer periphery of the gap adjusting operator 42 is screwed into the thread 41 to be provided on the second end plate 12A,
The external thread 45 of the differential element 44 is screwed into the internal thread 43B of the inner circumference of the gap adjusting operation element 42. The differential element 44 constitutes a thrust bearing box for the thrust bearing 16 of the first spindle 15 and is fitted to the first tool box 12 while being coupled to the first spindle 15 in the axial direction thereof. , Key 4
6 is supported by the first cutter box 12 so as to be movable only in the axial direction of the first main shaft 15. In the differential element 44, the two divided bodies 44A and 44B sandwiching the thrust bearing 16 are integrated by bolt connection, and the divided body 44B is provided with a screw portion 45. The external thread 43A (for example, M60, P = 2.8) and the internal thread 43B (for example, M30, P = 3) of the gap adjusting operation element 42 constitute a differential screw. 42A is a gap adjustment operator 42
It is a handle provided in.

The gap adjusting device 40 presses the split nut 47 screwed to the external thread portion 43A of the gap adjusting operator 42 against the end plate 12A of the first cutter box 12, and slides the lock screw 48 on the nut 47. The backlash is removed by locking and rotating the gap adjusting operator 42 with the split 47A inserted from one end and fastened to the other end. In addition, the gap adjusting device 40 includes the differential 4
The backlash of the differential screw 44 is locked by rotating the differential element 44 while the washer 49A, which is backed up by the lock screw 49 screwed to the end face of the external thread part 45, is pressed against the end face of the gap adjusting operation element 42. Remove. When the gap adjusting operation member 42 is rotated, the lock screw 48 slightly loosens the split nut 47 to release the connection between the male screw portion 43A and the female screw portion 41 of the first cutter box 12, and the lock screw 49 is locked.
Is slightly loosened the washer 49A and the female screw 43B and the differential element 44.
The connection with the external thread portion 45 is released.

Therefore, the gap adjusting operation by the gap adjusting device 40 is performed as follows.

(1) The lock screws 48 and 49 are slightly loosened to release the rotation lock of the gap adjusting operation member 42, and the male thread portion 43A and the female thread portion 43B of the gap adjusting operation member 42 are released.
Makes it possible to eliminate the backlash of the differential screw formed by the method.

(2) The gap adjusting operator 42 is rotated by using the handle 42A. Male thread 43A (P = 2.8) and female thread 43B (P = 3)
Is slightly displaced along the key 46 by the pitch difference (ΔP = 0.2 mm / rotation), and the first main shaft 15 axially integrated with the differential 44 is also minutely displaced by the same amount. And the cutting edge of the first blade 17 and the second
Gap amount g in the axial direction of the cutting edge of the cutting tool 27 (FIG. 4A)
To adjust.

The lap amount adjusting device 50 includes a second cutter box 1.
3 rotatably supports the eccentric cylinder 51 via the radial bearings 21, 21, and rotatably supports the second main shaft 23 via the radial bearings 22, 22 on the eccentric cylinder 51.
The center of rotation 51C of the second cutter box 13 with respect to the eccentric cylinder 51 of the second main shaft 23 is eccentric. Then, the eccentric cylinder 51 inserts the tool 53 into the tool insertion hole 52A provided in the flange 52, and the second tool box 1
3 and the angle of rotation of the mounting of the eccentric cylinder 51 with respect to the eccentric cylinder 51 can be adjusted.
To lock the rotation.

Therefore, the lap adjusting operation by the lap adjusting device 50 is performed as follows. (1) Loosen the lock lever 54 to release the rotation lock of the eccentric cylinder 51.

(2) The eccentric cylinder 51 is rotated by using the tool 53 to adjust the rotational position of the eccentric cylinder 51, whereby the second main shaft 23 is slightly displaced in the direction perpendicular to the axis.
The radial lap amount δ (FIG. 4B) between the cutting edge of the blade 17 and the cutting edge of the second blade 27 is adjusted.

Therefore, according to the present embodiment, the following operations are provided. The gap adjusting device 40 causes the differential 44 to be minutely displaced by the differential screw mechanism by rotating the gap adjusting operation element 42 with respect to the first cutter box 12, and thus the first main shaft 15 in the axial direction. The gap amount between the first and second blades 17, 27 can be adjusted by minute displacement. First spindle 1
5 is displaced with high accuracy in the axial direction by the gap adjusting operation element 42 and the differential element 44, and the accuracy of the gap amount depends only on the rotational fluctuation of the first and second spindles 15 and 23,
The gap amount can be adjusted with high precision.

The lap adjusting device 50 includes the second cutter box 1.
By rotating the eccentric cylinder 51 with respect to 3 to adjust the mounting rotation angle position, the second main shaft 23 is slightly displaced in the direction perpendicular to the axis to reduce the amount of lap between the first and second blades 17, 27. Can be adjusted. The second main shaft 23 is displaced by the eccentric cylinder 51 in parallel to the direction perpendicular to the axis with high precision, and the accuracy of the lap amount depends only on the rotational fluctuation of the first and second main shafts 15 and 23. Can be adjusted with high precision.

The cutting start position (P ₁ , P ₂ ) due to the change (Δδ) in the lap amount between the first blade 17 and the second blade 27.
Change (ΔL) is small, and generation of ear waves of the material to be cut can be prevented. That is, in the prior art, as shown in FIG.
The bottom position of the second blade 27 is fixed to the top position of the first blade 17 at the same position in the advancing direction of the material to be cut, and the lap amount of the first blade 17 and the second blade 27 changes. The first blade 17 and the second blade 2 when Δ
7, the change ΔLA in the cutting start position becomes large in the advancing direction of the material to be cut. In contrast, in the present invention, FIG.
As shown in (B), the bottom position of the second blade 27 is shifted from the top position of the first blade 17 in the advancing direction of the material to be cut. When the change in the amount of lap of the blade 27 is Δδ, the change ΔLB in the cutting start position of the first blade 17 and the second blade 27 is small in the advancing direction of the material to be cut.
In FIG. 5, 15C indicates the rotation center of the first main shaft 15, 23C indicates the rotation center of the second main shaft 23, and 51C indicates the rotation center of the eccentric cylinder 51.

The cutting device 10 repeatedly uses the first blade 17 and the second blade 27 after re-grinding them as follows.

(1) The first blade 17 is removed from the fixed holder 18 of the first spindle 15, and the second blade 27 and the blade holder 28 are removed from the fixed holder 26 of the second spindle 23.

(2) The re-grinding of the cutting edge of the first blade 17 is performed by polishing the side surface of the first blade 17 attached to the fixed holder 18. The resharpening of the cutting edge of the second blade 27 is performed by the second blade 27.
Is polished on the side surface to be attached to the blade holder 28.

(3) The blade holder 28 to which the second blade 27 is fixed is attached to the fixed holder 26 of the second spindle 23,
Is attached to the fixed holder 18 of the first spindle 15. Thereby, the same gap application state and lap application state as the attachment state before the re-polishing of the first blade 17 and the second blade 27 can be reset. First blade 17, second blade 2
The gap applying state and the lap applying state of No. 7 may be changed, if desired, by the gap adjusting device 40 and the lap adjusting device 50 described above.
The setting can be changed as described above using.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the scope of the present invention. The present invention is also included in the present invention.

[0027]

As described above, according to the present invention, the gap amount and the lap amount of the first and second blades can be adjusted with high accuracy in the cutting apparatus.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a cutting device.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is an arrow view along the line III-III in FIG. 1;

FIG. 4 is a schematic diagram showing a gap amount and a lap amount of a blade.

FIG. 5 is a schematic diagram showing a change in a cutting start position according to lap amount adjustment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cutting apparatus 12 1st blade box 13 2nd blade box 15 1st main shaft 17 1st blade 23 2nd main shaft 27 2nd blade 40 Gap adjustment device 41 Female thread part 42 Gap adjustment operator 43A Screw part 43B Female thread part 44 Differential element 45 Male thread part 50 Lapping device 51 Eccentric cylinder

Claims (1)

[Claims] 1. A cutting device comprising: a first blade mounted on a first main shaft supported by a first blade box; and a second blade mounted on a second main shaft supported by a second blade box. The outer thread of the gap adjustment operator is screwed into the female thread of the first cutter box, and the outer thread of the differential element is screwed into the inner thread of the gap adjustment operator. A gap adjusting device in which a differential screw is formed by an external thread portion and an internal thread portion of the adjustment operator, and a first spindle and a differential are coupled in their axial directions; and a second cutter box is eccentric. The cylinder is rotatably supported, the second main shaft is rotatably supported by the eccentric cylinder, and the rotation center of the eccentric cylinder with respect to the second cutter box is eccentric with respect to the rotation center of the second main shaft with respect to the eccentric cylinder, A lap adjusting device that is capable of adjusting a mounting rotation angle position of the eccentric cylinder with respect to the second cutter box. The gap adjusting device can adjust the axial gap amount of the cutting blades of the first and second blades, and the lap adjusting device can adjust the radial lap amount of the cutting blades of the first and second blades. A cutting device, characterized in that: