JPH09216120A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a cutter for a long time even after it is abraded in cutting of a workpiece and to reduce frequency of cutter replacement. SOLUTION: A cutter is provided with a workpiece holding table 2 which freely holds a workpiece W and can be reciprocated in the longitudinal direction in a horizontal plane and is provided with a longitudinal groove 1, a tilting plate 3 provided with a cutter 7, a part of which is protruded from the groove 1 so as to cut the workpiece W, and an electric motor 8 driving the cutter 7, a horizontal pivot shaft 4 pivoting the tilting plate 3, and a tilt applying mechanism 5 tilting the tilting plate 3 around the horizontal shaft center L of the pivot shaft 4. The tilting plate 3 is tilted by means of the tilt applying mechanism 5, and the cutter 7 protruding height from the surface 19 of the table 2 can be regulated to the predetermined value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device which requires less frequent replacement of a cutter even if a work is cut for a long time.

[0002]

2. Description of the Related Art Conventionally (long materials such as strips and pipes)
For cutting the work, the base, the work gripping table slidably mounted on the base, and a part of the work gripping table protruding from the upper surface of the work gripping table are rotated so as to rotate around the horizontal axis in the horizontal direction. Was carried out by a cutting device provided with a thin plate-shaped grindstone cutter attached at a predetermined position. This conventional cutter has a structure in which it does not move up and down with respect to the table (base) but rotates about a horizontal axis having a constant height.

[0003]

However, if the cutter used in the conventional cutting device repeatedly cuts the work, this cutter is worn out in a short time, and thus it is difficult to use it for a long time. there were. Therefore,
It was uneconomical to replace the worn-out cutter with a new cutter more frequently, and to always prepare a spare cutter.

Therefore, the present invention solves the above-mentioned drawbacks, and the cutter can be used for a long time even if the cutter is worn by cutting the work, and the frequency of exchanging the cutter is low. An object of the present invention is to provide a cutting device.

[0005]

A cutting device according to the present invention is provided with a work holding table which is capable of gripping a work and is capable of reciprocating in the longitudinal direction in a horizontal plane and having a groove in the longitudinal direction. A tilting plate on which a cutter that partially projects from the groove and cuts the work and an electric motor that drives the cutter are placed; and a horizontal pivot shaft that pivotally supports the tilting plate.
A tilting mechanism for tilting the tilting plate around the horizontal axis of the pivot shaft, and the tilting mechanism tilts the tilting plate to project the protrusion height of the cutter from the surface of the table. The height can be adjusted to a predetermined value.

Further, the tilt imparting mechanism is provided with a horizontal feed imparting portion for imparting front and rear horizontal feed, and a wedge member abutting against the back surface of the tilting plate, and the wedge member is moved forward and backward by the horizontal feed imparting portion. The tilting plate is configured to tilt.

The tilting mechanism includes a horizontal feed imparting section for providing front and rear horizontal feeds, and a cam whose curved portion contacts the back surface of the tilting plate. The horizontal feed imparting section rotates the cam. The tilting plate is configured to tilt.

Further, the tilt imparting mechanism includes a horizontal feed imparting portion for imparting front and rear horizontal feed, and a link having one end side pivotally attached to the reciprocating member of the horizontal feed imparting portion and the other end side pivotally attached to the tilt plate. Via the reciprocating member and the link,
The horizontal feed imparting section is configured to tilt the tilting plate.

Further, the tilt imparting mechanism includes a horizontal feed imparting portion for imparting front and rear horizontal feed, a first chain wheel fixed to the pivot shaft fixed to the tilt plate, and the first chain wheel and endless type. A second chain wheel that is interlocked and connected via a chain of the above, and the tilting plate is tilted by rotationally driving the first and second chain wheels around a horizontal axis by the horizontal feed imparting section. It is composed of.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 1 shows a cutting device according to the present invention, which pivotally supports a fixed base frame 6, a work holding table 2 having a longitudinal groove 1, a tilting plate 3 and a tilting plate 3. And a tilting mechanism 5 for tilting the tilting plate 3 around the horizontal axis L of the pivotal shaft 4. The pivot shaft 4 is provided below the tilt plate 3 in the width direction.

Then, the tilting plate 3 has (on the table 2)
A cutter 7 that partially projects from the groove 1 and cuts the work W
And an electric motor 8 are mounted. The cutter 7 is attached to the tilting plate 3 via a pivot shaft 10.

Further, the cutter 7 and the electric motor 8 are interlocked and connected by an endless conductive member 9 (such as a V belt or a timing belt). Specifically, the conductive member 9 is stretched between a pulley 11 attached to a pivot shaft 10 (of the cutter 7) and a pulley 12 attached to an output shaft of the electric motor 8.

The tilt imparting mechanism 5 is attached to an inner stepped portion 13 provided in the fixed base frame 6 (in the longitudinal direction), and a horizontal feed imparting portion 14 for providing front and rear horizontal feed and a tilting mechanism. The wedge member 15 that abuts the back surface 35 of the plate 3 (the sloped surface 18)
And

Further, the table 2 is provided with a work placing portion 37 on which the work W is placed, and a work fixing portion 32 attached to the work placing portion 37 to fix the work W. The groove 1 is specifically formed (in the longitudinal direction) on the work placing portion 37.

The horizontal feed imparting section 14 comprises a handle 16 for manual rotation and a screw shaft 17 connected to the handle 16 via a connecting member 33. Further, the wedge member 15 is screwed onto the screw shaft 17 so as to be freely screwed back and forth. For this reason, when the wedge member 15 is moved back and forth in the horizontal feed imparting section 14, the tilting plate 3 tilts, so that the protruding height H of the cutter 7 from the surface 19 of the table 2 is reliably held.

Below the fixed base frame 6, a cutter 7 is provided.
A cutting waste container 31 for collecting cutting waste that falls when the work W is cut is attached so as to be freely drawn and stored. The upper part of the cutting waste container 31 is open.

Further, rails 20 and 21 are horizontally arranged in the front-rear direction on the front side and the rear side of the fixed base frame 6 (bolt members 27 ...
Etc.). Also this rail
As shown in FIG. 2, 20 has a rectangular cross section.
Further, the rail 21 is composed of a vertically long substantially hexagonal shape having the mountain cutting cut portions 22 and 22 in the upper and lower sides in a cross sectional view.

A rotating roller corresponding to the rail 20
23 ... and rotating roller 29 with V groove corresponding to rail 21 ...
Is provided on the back surface 24 of the table 2 so as to be rollable.
That is, the rotating roller 23 is inserted (from the horizontal direction) into the through hole 26 of the vertical wall portion 28 that is vertically hung vertically downward from the back surface 24 of the table 2 --- the work placing portion 37. It is fitted and inserted into the pivot shaft 25. As for the rotating roller 29,
The same is true.

In the illustrated example, the rails 20 and 21 have different cross-sectional shapes, but the cross-sectional shapes may be the same. Further, the cross-sectional shape of the rails 20 and 21 is not limited to the above-mentioned shape, but the rotating rollers 23 and 29 are
Any shape is preferable as long as ... Rolls.

Further, the table 2 ---- work rest part 37
On the back surface 24 of the table 2, as shown in FIG.
A slide operation unit 30 for sliding the rails 20 and 21 on the rails 20 and 21 is provided.

Next, a method of cutting the work W will be described. First, as shown in (a) of FIG. 3, the work W is
Placed on the work rest 37 (of the table 2) and fixed on the work rest
Fix at 32.

Next, the table 2 is slid by the slide operation unit 30 (not shown) as shown by the arrow A, and the work W
Is cut by a cutter 7 which is driven to rotate by an electric motor 8 (a part of which protrudes from the groove 1 and has a protrusion height H from the surface 19 of the table 2). Then, the work of cutting the work W may be repeated as described above.

However, if such a cutting operation is carried out for a long time, the cutter 7 will gradually wear. That is, the outer diameter d ₂ of the cutter 7 after cutting the work W (see (b) of FIG. 3) is smaller than the outer diameter d ₁ of the cutter 7 before cutting. Therefore, the protruding height H of the cutter 7 from the surface 19 of the table 2 gradually decreases. The outer diameter d ₁ and the outer diameter d ₂ shown in FIGS. 4 to 6 are always d ₁ > d
Assume that there is a relationship of ₂ .

Then, the handle 16 (of the tilting mechanism 5)
When the screw shaft 17 is horizontally fed by manually rotating the screw shaft 17, the screw shaft 17 is screwed inside the wedge member 15, so that the wedge member 15 advances as shown by an arrow B. As a result, the wedge member 15 thus advanced,
Since the tilting plate 3 is pushed up (while tilting about the horizontal axis L in the left-right direction of the pivot shaft 4) as shown by an arrow C with the pivot shaft 4 (for pivotally supporting the tilt plate 3) as a fulcrum, The state shown in (b) of 3 is obtained.

Therefore, if the forward and backward movement of the wedge member 15 is finely adjusted by the horizontal feed imparting section 14, specifically the handle 16, the height of protrusion of the cutter 7 from the surface 19 of the table 2 is increased. It is possible to reliably hold the height H (without changing the work W before and after cutting).

As shown in FIG. 4, the tilt imparting mechanism 5 according to another embodiment of the present invention includes a horizontal feed imparting portion 14 for providing horizontal feed forward and backward, and a curved portion 34 contacting the back surface 35 of the tilting plate 3. And a cam 36 that does.

The horizontal feed imparting section 14 includes a handle 16 for manual rotation, a screw shaft 17 connected to the handle 16 via a connecting member 33, and a screw shaft.
17 and a reciprocating member 40 screwed together. That is, the cam 36 is attached to the reciprocating member 40 via the vertical upright cam holding member 38. Also cam 36
Is also pivotally supported by a pivot shaft 39 fixed to the fixed base frame 6 in the width direction. The reciprocating member 40 is composed of a nut member or the like.

When the cutter 7 is worn, the handle 16 (of the tilting imparting mechanism 5) 16 as shown in FIG.
Is manually rotated to feed the screw shaft 17 back and forth horizontally to move the reciprocating member 40 on the screw shaft 17 in the front-rear direction. As a result, (this reciprocating member
When the cam holding member 38 (attached to 40) swings, the cam 36
Also swings in conjunction with this swing (around the horizontal axis L _{1 in} the left-right direction of the pivot shaft 39).

Therefore, the cam 36 swinging in this manner is used (for pivotally supporting the tilting plate 3) as shown in FIG.
The tilt plate 3 is pushed up (while tilting about the horizontal axis L in the left-right direction of the pivot shaft 4) about the pivot shaft 4 as a fulcrum.

As shown in FIG. 5, the tilt imparting mechanism 5 according to yet another embodiment includes a horizontal feed imparting section 14 for imparting front and rear horizontal feed, and a link 41. Further, the horizontal feed imparting section 14 is a handle for manual rotation.
16, a screw shaft 17 connected to the handle 16 via a connecting member 33, and a reciprocating member 40 screwed into the screw shaft 17.

The link 41 has one end pivotally attached to the reciprocating member 40 and the other end attached to the tilting plate 3 (the fixed base frame 6).
Is pivotally attached via a pivot shaft 42 (disposed in the width direction).

Then, if the cutter 7 is worn, the handle 16 (of the tilting mechanism 5) 16 as shown in FIG.
Is manually rotated to feed the screw shaft 17 back and forth horizontally to move the reciprocating member 40 on the screw shaft 17 in the front-rear direction. As a result, (this reciprocating member
The link 41 pivotally attached to 40 swings.

Therefore, the link 41 swinging in this way is
As shown in (b) of FIG. 5, while tilting the tilting plate 3 (around the horizontal axis L in the left-right direction of the pivot shaft 4) about the pivot shaft 4 (for pivotally supporting the tilt plate 3) as a fulcrum. ) Push it up.

The pivot shaft 10 (of the cutter 7) and the pivot shaft
The distance between the fulcrum with 42, or with the pivot 42 (the tilt plate 3
If the distance between the fulcrums with the pivot shaft 4 is adjusted, the cutter 7
The vertical movement of can be finely adjusted.

As shown in FIG. 6, a tilting mechanism 5 according to another embodiment of the present invention includes a horizontal feeding part 14 for feeding the front and rear horizontal feeds, and the pivot shaft 4 fixed to the tilting plate 3. A first chain wheel 45 fixed to the first chain wheel 45, and a second chain wheel 46 interlockingly connected to the first chain wheel 45 via an endless chain 44.

The second chain wheel 46 is pivotally supported on a pivot shaft 43 arranged in the fixed base frame 6 in the width direction. The pivot shaft 4 is fixed integrally with the tilting plate 3. It is also preferable to use a belt having a tooth profile such as a timing belt instead of the chain 44.

The horizontal feed imparting section 14 includes a handle 16 for manual rotation, a screw shaft 17 connected to the handle 16 via a connecting member 33, and a screw shaft.
17 and a reciprocating member 40 screwed together. The reciprocating member 40 holds a part of the chain 44.

When the cutter 7 is worn out, as shown in FIG. 6A, the handle 16 (of the tilting mechanism 5) is manually rotated to feed the screw shaft 17 forward and backward. , The reciprocating member 40 is moved on the screw shaft 17 as shown by an arrow D. Therefore, as the reciprocating member 40 moves, the chain 44 interlocks as indicated by arrow E.

[0040] That is, the first sprocket wheel 45 is rotated in the horizontal axis L around a left-right direction of the pivot shaft 4, a second sprocket wheel 46 is horizontal axis L ₂ around the lateral direction of the pivot shaft 43 Drive to rotate. Therefore, the tilting plate 3 is pushed up by the first chain wheel 45 rotationally driven in this way, as shown in FIG.

In summary, if the tilting mechanism 5 shown in FIGS. 4 to 6 is used, that is, the handle 16 swings the cam 36, the link 41 swings, and the first chain wheel 45 rotates. By finely adjusting, the projecting height H (from the surface 19 of the table 2) of the cutter 7 can be constantly maintained at the most desirable predetermined value.

Although not shown in the drawings, it is also preferable that the table 2 be attached to the fixed base frame 6 so as to be swingable and openable. For this reason, if the table 2 is opened, it becomes easy to replace the worn cutter 7.

Although the power source of the tilting mechanism 5 is manual, it is preferable to use an electric motor or the like. In particular,
The screw shaft 17 (of the tilting imparting mechanism 5) and the output shaft of the electric motor may be interlocked by a interlocking coupling mechanism including a pulley on which a reduction gear and a belt are suspended.

Further, the screw shaft 17 in the illustrated example is
Although the screw thread is provided over the entire range of the shaft body, it is also preferable that the screw thread is provided only in the range where the reciprocating member 40 of the shaft body slides back and forth. That is, since the back-and-forth movement of the reciprocating member 40 can be adjusted by the pitch of the thread of the screw shaft 17, the vertical movement of the cutter 7 can be more finely adjusted.

[0045]

According to the present invention, the following significant effects can be obtained by the above-described structure.

(According to the first aspect) Even when the cutter 7 is worn (the outer diameter is reduced), the tilting mechanism 5 (the tilting plate 3 is used).
Since the protruding height H from the surface 19 of the table 2 is maintained (by tilting the), the frequency of replacement of the cutter 7 is reduced and the work W is continuously cut by the same cutter 7 for a long time. It is possible to Further, it is economical because the spare cutter 7 has a small number of parts.

Further, since the cutter 7 and the electric motor 8 are mounted on the tilting plate 3, the cutter 7 is worn (to the extent that the work W cannot be cut) or the electric motor 8 is broken. Even in such a case, the replacement work can be easily performed, and the length of the conductive member 9 need not be adjusted.

(According to the second, third, fourth or fifth aspect), although the tilt applying mechanism 5 is constructed in a simple form, the tilt applying mechanism 5 allows fine adjustment of the tilt plate 3. While being tilted, the protrusion height H of the cutter 7 from the surface 19 of the table 2 can always be reliably maintained at an optimum predetermined value.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a simplified cross-sectional view thereof.

FIG. 3 is a simplified explanatory diagram showing a usage state.

FIG. 4 is a simplified explanatory diagram showing another embodiment of the present invention.

FIG. 5 is a simplified explanatory diagram showing still another embodiment of the present invention.

FIG. 6 is a simplified explanatory diagram showing another embodiment of the present invention.

[Explanation of symbols]

 1 Groove 2 Work Holding Table 3 Tilt Plate 4 Pivot Shaft 5 Tilt Applying Mechanism 7 Cutter 8 Electric Motor 9 Conductive Member 14 Horizontal Feeding Part 15 Wedge Member 19 Front Surface 34 Curved Surface 35 Back Surface 36 Cam 40 Reciprocating Member 41 Link 44 Chain 45 First chain wheel 46 Second chain wheel H Protruding height L Horizontal axis W Work

Claims (5)

[Claims] 1. A work holding table 2 which is capable of gripping a work W and is capable of reciprocating in the longitudinal direction in a horizontal plane and has a groove 1 in the longitudinal direction; A tilting plate 3 on which a cutter 7 for cutting a work W and an electric motor 8 for driving the cutter 7 are mounted, a horizontal pivot shaft 4 for pivotally supporting the tilting plate 3, and the tilting plate 3 for supporting the tilting plate 3. 4. A tilting mechanism 5 for tilting about the horizontal axis L of 4
And a tilting mechanism 5 for tilting the tilting plate 3 so that the protruding height H of the cutter 7 from the surface 19 of the table 2 can be adjusted to a predetermined value. apparatus. 2. The tilting imparting mechanism 5 comprises a horizontal feeding imparting portion 14 for imparting front and rear horizontal feeding, and a wedge member 15 abutting against a back surface 35 of the tilting plate 3, and the wedge is provided in the horizontal feeding imparting portion 14. The cutting device according to claim 1, wherein the tilting plate 3 is tilted by moving the member 15 back and forth. 3. The tilting mechanism 5 includes a horizontal feed applying section 14 for providing front and rear horizontal feeds, and a curved section 34 for providing a back surface 35 of the tilting plate 3.
2. The cutting device according to claim 1, further comprising: a cam 36 that comes into contact with, and the tilting plate 3 is tilted by rotating the cam 36 by the horizontal feed imparting section 14. 4. A tilt feed mechanism 5 includes a horizontal feed imparting portion 14 for imparting front and rear horizontal feed, and one end side of the horizontal feed imparting portion 14
A link 41 pivotally attached to the reciprocating member 40 and the other end pivotally attached to the tilting plate 3.
2. The cutting device according to claim 1, wherein the tilting plate 3 is tilted by the horizontal feed imparting section 14 via the. 5. A tilt feed mechanism 5 is provided with a horizontal feed giving portion 14 for giving a horizontal feed to the front and rear, a first chain wheel 45 fixed to the pivot shaft 4 fixed to the tilt plate 3, and the first chain wheel 45. A second chain wheel 46 interlockingly connected to the chain wheel 45 through an endless chain 44;
And the first and second chain wheels 4 in the horizontal feed imparting section 14
The cutting device according to claim 1, wherein the tilting plate 3 is tilted by rotationally driving 5, 5 about a horizontal axis.