JPH03149123A - Cutting device - Google Patents

Abstract

PURPOSE:To easily cut a clamp member, which is a material to be cut, without giving damage to a work table by horizontally rotatably mounting the work table to a base bed in a manner wherein the center of rotation agrees with a crossing point between an extension line of a contact side surface of the material to be cut in a fixed plate and a horizontal moving locus of a circular saw cutting edge. CONSTITUTION:A cut material positioning fixed plate 31, whose base end part is fixed to a fixing bed 26 provided in both sides of a work table 30, is extension-provided on the work table 30. Further, the work table 30 is horizontally rotatably mounted to a base bed 23 in such a manner that the center of rotation agrees with a crossing point between an extension line of a contact side surface of a cut material in the fixed plate 31 and a horizontal moving locus of a circular saw cutting edge. As a result, even by horizontal rotation of the work table 20, a position relation between the fixed plate 31 and the circular saw cutting edge is prevented from changing, further by tilting the circular cutting edge and by horizontal rotation of the work table 30, a complicated tilt cut surface, related to combination of two tilt directions, is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting device for cutting long materials such as rods, tubes, or irregularly shaped materials thereof with vertical or inclined cutting surfaces.

[Prior Art] Even though it is relatively easy to cut a long material vertically, if the cutting surface is required to be inclined, it is necessary to cut the long material with respect to the workbench. It takes skill and effort to maintain the inclination at a predetermined angle. Also, a large work space was required.

As a cutting device that satisfies this requirement,
There is one described in Publication No. 89.

This cutting device is designed to horizontally move a rotating circular saw cutting blade that protrudes a desired amount above the top surface of the work table to cut the material to be cut. The circular saw cutting blade is mounted on a slide shaft so as to be movable in a direction perpendicular to the direction of movement thereof, and the circular saw cutting blade is tiltable in a direction perpendicular to the direction of movement thereof. The tilting and horizontal movement mechanism of the circular saw cutting blade at this time is as shown in FIGS. 6 and 7.

In the figure, one end of two rotating brackets 2.3 is pivoted 2a, 3a on both sides of the work table 1 so as to substantially coincide with the upper surface of the table 1. Two parallel guide shafts 4.5 are fixed at both ends to these two rotating brackets 2.3.
is provided, and a moving table 6 is mounted so as to be movable along this guide shaft 4.5. The movable table 6 is provided with pivot points 2a of two rotating brackets 2.3.

The circular saw cutting blade 7 is attached together with the drive means 8 so that the blade part 7a is located on a straight line connecting the two points 3a.

A guide shaft of the movable table 6 is fixed to the rotating bracket 2 at the base end, and is horizontally moved by a pressure means 9 whose distal end is connected to the movable table 6.

Furthermore, each of the two rotating brackets 2.3 is connected by a lobe 13 to the tip of a pressure means 1O whose base end is fixed to a machine frame 14 constituting the work table l. It can be tilted. This tilting is caused by the guide shaft 4.5. The movable table 6 and the circular saw cutting blade 7 maintain the state before tilting, and the whole body tilts as it is.

In order to maintain the circular saw cutting blade 7 at a desired tilt angle,
Tightening of the nut 12.12 which is screwed into the insertion end which is protruded outward from the rotating bracket 2.3 and which is inserted into the arcuate groove 11 bored in the machine frame 14.14 that constitutes the work table l. This is done by fixing the guide shaft 5 to the machine frames 14, 14.

[Problems to be Solved by the Invention] However, since the conventional cutting device obtains an inclined cut surface only by tilting the circular saw cutting blade, it is possible to obtain only a simple inclined cut surface with the inclination direction fixed in one direction. Therefore, it was not possible to obtain a complex inclined cut surface.

Therefore, there is a cutting device in which a circular saw cutting blade is set on a work table so that it can move forward and backward with respect to the work table surface, and the circular saw cutting blade is designed to be tiltable and horizontally rotatable. According to this cutting device, a complex inclined cut surface can be obtained by setting the angle in two directions: setting the angle by tilting the circular saw cutting blade and setting the angle by horizontally rotating the circular saw cutting blade. However, in this cutting device, the horizontal movement locus of the circular saw cutting blade relative to the work table changes depending on the angle set by the horizontal rotation of the circular saw cutting blade, and the dimensions of the cut material must be remeasured each time, which is complicated. In addition, there was a problem in that the work table surface and the clamping member for the material to be cut fell within the movement locus of the circular saw cutting blade, and the material to be cut could not be cut unless they were cut.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to improve the position of the clamping member of the material to be cut and the horizontal movement trajectory (movement during cutting) of the circular saw cutting blade by horizontal rotation of the work table. The relationship can always be kept constant,
Further, it is an object of the present invention to provide a cutting device capable of obtaining a complicated inclined cutting surface in which the cutting surface is a combination of two directions.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides an apparatus for cutting a material to be cut by horizontally moving a circular saw cutting blade that is attached to a work table so that it can be tilted and protrudes by a desired amount. A fixing plate for positioning the material to be cut is fixed at its base end to fixing bases provided on both sides of the work table and extends above the work table, and the work table is arranged so that the material to be cut comes into contact with the fixing plate. It is characterized by being horizontally rotatably mounted on the base so that the center of rotation coincides with the intersection of the extension line of the side surface and the horizontal movement locus of the circular saw cutting blade.

[Function] Since the present invention is configured as described above, the positional relationship between the fixed plate and the circular saw cutting blade does not change even when the work table is horizontally rotated, and the tilting of the circular saw cutting blade and the operation can be easily performed. By horizontally rotating the table, a complex inclined cut surface with a combination of two inclined directions can be obtained.

[Example] The present invention will be specifically described below based on the example illustrated in FIGS. 1 to 4.

In FIGS. 1 and 2, the work table 20 has an upper surface serving as a work surface 21 on which a workpiece to be cut is placed, and is surrounded by side plates on all four sides to form a box shape as a whole. A gap 22 is formed in the working plane 21 so that the circular saw cutting blade can be moved horizontally while protruding from the upper surface by a desired amount. Half-moon-shaped first auxiliary tables 24, 24 are fixed to both sides of the work table 20 so as to be flush with the work plane 21. The lower part of the work table 20 is rotatably supported by a base 23. Further outside the first auxiliary table 24.24 is a second auxiliary table 25.
25 is supported and arranged on a fixed base 26.26.

Further, above the working plane 21, vertical pressing rods 27, 27 are provided on both sides of the moving gap 22 of the cutting blade to press and restrain the material to be cut from above so as to be movable up and down. The vertical pressing rod 27 is vertically movably attached to the tip of a support arm 29 whose proximal end is supported by a column 28 fixed to the upper part of the fixed base 26. The support arm 29 is attached to a block 28a rotatably attached to the upper part of the column 28 so as to be slidable in the longitudinal direction. A pressing plate 30 is attached to the lower end of the vertical pressing rod 27, and by moving downward, the pressing plate 30 presses and fixes the material to be cut placed on the work surface 2.

Furthermore, fixing plates 31.degree. 31 are provided on the two working surfaces at a distance such that rotation of the working table 20 is not restricted. The fixing plates 31 and 31 each have their proximal ends connected to the fixing base 26.
．． 26, and extends from both sides of the work table 20 onto the work hand surface 21 so that the tip faces across the movement gap 22 of the cutting blade 32. The tip of one of the fixed plates 31 is formed to be inclined so as not to interfere with the inclined cutting blade. This fixing plate 31 positions the workpiece placed on the work surface 2 by bringing it into contact with the side surface thereof. Further, the horizontal pressing rod 52 presses the positioned material to be cut from the side and holds it between the fixed plate 31 and the horizontal pressing rod 52 .

A pressing plate 52a is pivotally supported at the tip of the horizontal pressing rod 52 so that the workpiece to be cut can be accurately held even when the set angle of the working table 20 changes due to horizontal rotation of the working table 20. There is.

The work table 20 is mounted on the base 2 so that its center of rotation coincides with the intersection of the extension line of the side surface of the fixed plate 31, 31 that contacts the material to be cut and the gap 22, which is the horizontal movement locus of the circular saw cutting blade 32.
3 is rotatably supported. Since the work table 20 has the rotation center as described above, even when the work table 20 is horizontally rotated, the positional relationship between the fixed plate 31, 31 and the circular saw cutting blade 32 does not change. The fixed plate 31, 31 does not enter the movement locus.

Incidentally, the reference numeral 50 in the figure is a force bar that prevents cutting chips and the like from scattering.

Next, the internal mechanism will be explained in detail based on FIGS. 3 and 4.

The circular saw cutting blade 32 is rotatably supported with its rotating shaft 32a on a bearing 34 fixed to a slide table 33, and is mounted so as to protrude a desired amount above the work plane 21. A motor 36 that powers the circular saw cutting blade 32 is fixed to the slide table 33, and rotates the cutting blade 32 in conjunction with the rotating shaft 32a of the circular saw cutting blade 32 by an endless belt. Also,
A motor force bar 37 is fixed to the slide table 33 to prevent chips and the like from entering the mechanism.

Such a slide stand 33 is slidably inserted into guide shafts 34 and 35. This side shaft 34, 35 has bearings 3B, 3 fixed to both upper sides of the work table 20.
Both ends are supported by abbreviated support arms 39 and 39 whose upper ends are pivoted at 8 and are provided in parallel.

Also, the inner support arm 39 (third
An air cylinder 41 for horizontally moving the slide base 33 along the guide shaft 34.degree. 35 is fixed to the left support arm 39) via a cylinder seat 40.

In such a structure, the circular saw cutting blade 32° and the sliding base 33. Guide shaft 34.35. Motor 36, motor cover 37. and the entire air cylinder 41 is connected to the support arm 39 .
It rotates integrally around the pivot point 39 as the center of rotation.

The direction of rotation at this time is perpendicular to the horizontal movement direction of the circular saw cutting blade 32, and this rotation causes the circular saw cutting blade 32 to
The circular saw cutting blade 32 is tilted to the state shown by the two-dot chain line in FIG. ), and in order to fix the circular saw cutting blade 32 at a desired tilt angle, screws at both ends of the guide shaft 34 protrude outward from the circular arc grooves 44 bored in the side plates 20a, 20a of the work table 20. Section 34a.

Both side plates 20a are screwed together with nuts 34a.

This is done by tightening 20a.

Further, the rotation mechanism of the work table 20 is as follows.

A rotary shaft 45 is fixed to the bottom plate 20b of the work table 20, and by rotatably supporting the rotary shaft 45 on the base 23, the work table 20 can be horizontally rotated. The rotating shaft 45 is attached to the bottom plate 20b so that its axial center coincides with the intersection of the extension line of the side surface of the fixed plate 31. It is fixed.

The rotating shaft 45 has a small diameter portion 45a in order from one end to the other end.
, a large-diameter receiving plate 45b, a stepped portion 45c, and a rotating shaft portion 45d are integrally formed, and a threaded portion (not shown) is carved at the tip of the rotating shaft portion 45d. This rotating shaft 45
is a small hole 20c bored in the bottom plate 20b of the work table 20.
At the same time, the large diameter receiving plate 45b is fixed to the lower surface of the bottom plate 20b, and the lower surface of the stepped portion 45c is brought into contact with the thrust bearing on the upper surface of the base 23, and the rotating shaft portion 45d is attached to the base. 23, and a thrust bearing retainer 46 is screwed onto the threaded portion at the lower end of the rotary shaft portion 45d to prevent it from being removed. This allows the work table 20 to rotate horizontally with respect to the base 23 around the rotation axis 45.

Furthermore, the work table 20 can be fixed at a desired rotation angle in the following manner.

A semicircular scale plate 47 is fixed to the base 23.

The scale plate 47 has an arcuate side surface that matches the rotation locus of the work table 20, and a scale 47a is engraved on the side surface.

A plurality of fixed lock pieces 48, 48, etc. are fixed to the scale plate 47 along its arcuate side surface. On the other hand, a movable lock piece 49 is fixed to the side surface of the bottom plate 20b of the work table 20, and the movable lock piece 49 and the fixed lock piece 4
By passing the lock bin 51 between the
The rotation of the work table 20 is restrained. When changing the angle, manually rotate the work table 20 and lock the movable lock piece 4.
This is done by passing the lock pin 51 between the lock pin 9 and the other fixed lock piece 48. The fixing lock pieces 48 are provided only at the 45° rotational positions on both the left and right sides (see Fig. 2), and these intermediate positions are fixed by a tightening tool on the scale plate 47 provided at the bottom of the work table 20. It's okay,
In this case, a highly accurate fixing position can be ensured. Note that the reference numeral 53 in FIG. 3 is a limit switch.

Next, the operation of the cutting device of this embodiment having such a structure will be explained. First, the circular saw cutting blade 32 is tilted so that a desired inclined cutting surface is obtained, and the work table 2
By horizontally rotating 0, the tilt angle and rotation angle are respectively set. Next, the material to be cut is placed on the two working surfaces of the work table 20 in contact with the side surfaces of the fixing plate 31, and the material to be cut is pressed and fixed by the vertical pressing rod 27 and the horizontal pressing rod 52. Thereafter, the circular saw cutting blade 32 is rotated and moved horizontally by the air cylinder 41 to cut the material to be cut. This cutting device enables various types of cutting as shown in FIG. For example, when the circular saw cutting blade 32 is vertically or tilted and the work table 20 is set at 0°, 45° to the left, and 45° to the right, the materials to be cut S are (A), (B), and (H), respectively. ) can be cut. By tilting the circular saw cutting blade 32, a more complex cut surface can be obtained than in a vertical position.

In FIG. 5, the symbol Sl is the side surface of the workpiece S that comes into contact with the side surface of the fixed plate 31, the symbol P is the intersection of the extension line of the side surface of the fixed plate 31 and the movement locus of the circular saw blade cutting blade 32, and the symbol β is The tilting range of the circular saw cutting blade 32 is shown.

[Effects of the Invention] Since the present invention is configured as described above, even if the circular saw cutting blade is tilted or the work table is horizontally rotated, the fixed plate will not enter the movement trajectory of the circular saw cutting blade, so that no damage will be caused. It is possible to easily cut the material to be cut without damaging the clamping member and the work table, and various cutting surfaces can be cut in one go, from simple vertical cutting surfaces to complex inclined cutting surfaces that involve a combination of two inclined directions. It can be obtained with Further, even when the work table is horizontally rotated, the positional relationship between the fixed plate and the circular saw cutting blade does not shift and is always at a constant position, so it is easy to measure the cutting position of the material to be cut, and workability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of the cutting device of the present invention, Fig. 2 is a plan view of the cutting device as above, Fig. 3 is a front view illustrating the mechanism inside the work table of the cutting device as above, and Fig. 4 is cutting as above. A side view illustrating the mechanism inside the work table of the device, FIG. 5 is a diagram of the cutting state of the same cutting device, FIG. 6 is a plan view of the mechanism of the conventional cutting device, and FIG. 7 is the mechanism of the same device. In the side sectional view of
FIG. 5(a) is a vertical state diagram of the circular saw cutting blade, and FIG. 3(b) is a tilted state diagram of the circular saw cutting blade. 20...Work table, 23...Base, 26...
Fixed base, 31... Fixed plate, 32-... Circular saw cutting blade.

Claims (1)

[Scope of Claims] A device for cutting a material to be cut by horizontal movement of a circular saw cutting blade attached to a work table so that it can be tilted and protrudes by a desired amount, wherein fixing plates for positioning the material to be cut are provided on both sides of the work table. The proximal end is fixed to a fixed base provided at the base and extends above the work table. A cutting device characterized in that the cutting device is horizontally rotatably mounted on a base so that the center of rotation coincides with the intersection of the two.