JPH04141315A - Cutting machine - Google Patents

Abstract

PURPOSE:To prevent a contact surface of a workpiece from damages due to a saw blade in a cutting machine for cutting off the workpiece of steel material or the like by returning the saw blade itself through a stroke got out of the position of the workpiece after the completion of cutting. CONSTITUTION:When a workpiece 30 is cut off by the use of the cutting machine 1, the workpiece 30 is first fixed with a vice 25 and while a disk saw 21 is rotated, a second movable bed 12 is moved to approach the workpiece 30. A first movable bed 6 is then in the upper limit position of a extended cylinder 7. When the disk saw 21 begins to cut the workpiece 30 as the second movable bed 12 is moved, the cylinder 7 is contracted and the movable bed 6 is obliquely lowered so that the disk saw 21 cuts off the workpiece 30 by the movement of both cylinder and bed. Even after the completion of cutting off the workpiece 30 the movable bed 6 keeps lowering. When the bed 6 reaches the lowermost position of the moving stroke, the movable bed 12 begins to retreat. And the movable beds 6, 12 return to the original positions.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting machine suitable for cutting wide workpieces such as composite materials and steel materials.

[Prior Art] Cutting machines equipped with a vise-type clamp for holding a workpiece such as a steel material, and a circular cutting wheel that moves six times in the needle direction are widely used. In addition, instead of such a cutting wheel, there is also a saw machine equipped with a circular saw that rotates downward in a hinged manner to cut the workpiece.

[Problems to be Solved by the Invention] In the conventional cutting machine described above, the saw blade that cuts the workpiece comes into contact with the cut end surface of the workpiece due to vibration, which accelerates the wear and tear of the saw blade itself and damages the cut end surface of the workpiece. However, there was a problem that a good cut end surface could not be obtained. In order to solve this problem, has a device been considered that allows the workpiece to move away from the saw blade once cutting is completed, or is it possible to move workpieces such as wide steel materials horizontally each time they are cut, requiring a large-scale device? There was a notification.

SUMMARY OF THE INVENTION An object of the present invention is to provide an in-tube cutting machine having a structure that allows the saw blade itself to return to its original position after completing a cut through a distance from the position of the workpiece.

[F-stage for solving the problems In order to solve the above problems, the present invention has the following configuration.

That is, the cutting machine according to the present invention includes a first movable table that is attached to a base and reciprocates in a fixed direction with respect to the rotary base, and a movable table that is attached to the first 11-jingle base. It is characterized by comprising a second movable base that reciprocates in a direction intersecting the moving force direction of the movable base, and a circular saw attached to the second movable base.

[Operation] While rotating the circular saw, the second movable table is moved toward the workpiece to cut the workpiece. When the circular saw passes through the workpiece and cutting is completed, move the first iiJ movable table saw in the direction away from the workpiece, and then move the second movable table saw and the first
Return the movable platform to its original position. As a result, the circular saw moves in a loop-like trajectory and returns to its original position without passing through the A1 device on the cutting surface of the workpiece.

[Embodiments] Hereinafter, embodiments of the present invention shown in the drawings will be described.

This cutting machine 1 is mounted diagonally on a base 2 fixed to a floor 1-.
・There are 3 rails in the direction, and there is a sliding white lI on this rail.
A first RIF carriage 6 having linear bearings 5, 5 fitted therein is mounted. This movable i'76 is formed approximately in the shape of a right triangle, and the -1-side 6a corresponding to the hypotenuse
or supported horizontally. The base 2 is provided with a base 1 of the first hydraulic cylinder 7, and its piston rod 1 is mounted on the base 2.
The tip of the cylinder is connected to the connecting plate 9 protruding from the first movable base 6.If the oil LfE cylinder tuff is not expanded or contracted, the first movable base 6 will move along the rail 3 along the arrow reciprocate in the direction.

On the ten sides 6a of the first movable table 6, there is a rail 1 with a water level of 1' in the force direction.
0 is provided, and a linear bearing 13.13 fixed to the lower surface of the horizontal plate-shaped second movable table 12 is slidably fitted therein.

In addition, the first movable base 6 is provided with a base portion (Nj) of the second oil LF, and a screw of the cylinder 15. Mounting plate 1
It is connected to 7. When this hydraulic cylinder 15 is expanded and contracted, the second movable base 12 is positioned at the first movable base t= and reciprocates in the direction of arrow Y. Incidentally, a circular saw 21 supported by a bearing block 20 and a motor 22 for rotationally driving the circular saw are mounted on the lower surface of the second movable base 12.

A high speed steel 25 for holding a workpiece is provided in one part of the X joint 2. The vice 25 includes a fixing part 25a having a hook-shaped cross section, and a presser foot Jl: 2 that moves diagonally up and down in the Z direction with respect to the fixing part 25a.
5b, and the presser is reciprocated by a clamp cylinder 27.

When cutting a workpiece 30 using this cutting machine 1, the workpiece 30 is first fixed in a vise 25, and the second movable table 12 is moved in a direction approaching the workpiece 30 while rotating the circular saw 21. At this time, the first movable base 6 is at the -1-eye position where the cylinder 7 is extended. When the circular saw 21 or the workpiece 30 is cut and tightened by the movement of the second movable table 12, the cylinder tuff contracts and the first movable table 6 is moved diagonally downward and tightened, and the movement of both of them causes the circular saw or the workpiece to be cut. Separate. Even after the cutting of the workpiece 30 is completed, the first movable base 6 continues to drive, and when it reaches the bottom of its travel stroke, the second movable base 12
begins to retreat. Then, both the first and second i+f moving tables 6, 12 return to their original positions (1). In addition, work 3
0 is completed, the first IIF movable movable base 12 does not move and cutting is performed only by moving the second movable base 12, and then the first IIF movable base 6 starts to move downward. You can do it like this. Further, in the above embodiment, the second movable table 12 is configured to move in the horizontal force direction, or may be moved not only in kneading but also in other directions.

[Effects of the Invention] As is clear from the description below, in the cutting machine according to the present invention, the saw blade follows a loop-shaped trajectory by the movement of the first and second movable bases that move in directions that intersect with each other. draw and move,
After cutting the workpiece, the saw blade does not pass through the cutting device and returns to its original position avoiding the workpiece, so the saw blade does not come into contact with the cut surface of the workpiece and does not damage the cut surface. For example, in the case of a chip saw. This makes it possible to prevent damage to the saw blade itself.

[Brief explanation of drawings]

FIG. 1 is a +E view of one embodiment of the present invention, and FIG. 2 is a sectional view of the sliding part. 1... Cutting machine 2... Base 3... Rail 6. 12... Movable base 7, 15... Hydraulic cylinder 21... Circular saw 25... Vise patent applicant Planner Co., Ltd. Hiroshi Sugawara, Patent Attorney

Claims (1)

[Claims] (1) A first movable base that is attached to a base and reciprocates in a fixed direction with respect to the base, and a first movable base that is attached to the first movable base and reciprocates in a direction that intersects the moving direction of the movable base. A cutting machine characterized by comprising: a second movable base for cutting and a circular saw attached to the second movable base.