JPH0335926A - Cutting method by saw blade and sawing machine - Google Patents

Abstract

PURPOSE:To prevent the tipping and wear from occurrence without bringing the tip of a saw blade into contact with the end surface of a work by a method wherein when a saw blade is returned from a cutting completion position to a start position, the end surface of the work is separated away from a cutting surface. CONSTITUTION:When a cutting work is effected, after a band saw blade 29 is temporarily stopped in a cutting completion position located below a work, it is returned to its original start position. In this case, pressure oil is fed to a port A, and when pressure oil is bled through a port B, the whole of a saw blade housing 5 is moved in the direction of an arrow mark C. The saw blade housing 5 is raised in a state that it is separated away from the cut surface of a work, and the band saw blade 29 is returned to a start position. Since, when the band saw blade 29 is returned from the cutting completion position to the start position, it is located in a position it does not make contact with the cut surface of the work and is separated away therefrom, the tip of the band saw blade 29 is prevented from the occurrence of tipping and wear, and a band saw blade 29 life can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cutting method using a saw blade and a saw machine thereof.

(Prior Art) Hitherto, for example, a horizontal or vertical band #A board has been known as a cutting machine v4 for cutting a workpiece. For example, in a horizontal bandsaw machine, a workpiece is clamped in a vise device, and a saw blade housing that holds a movable saw blade is moved up and down to cut the workpiece. That is, after the saw blade is lowered from the ascending end position to cut the workpiece, the saw blade is returned from the descending end position to the original ascending end position.

(Problems to be Solved by the Invention) By the way, in the above-described conventional cutting method using a saw blade, after cutting is performed, the saw blade is raised from the lower end position to the upper end position, for example, by rapid traverse and returned. Therefore,
When the saw blade is raised from the lowered end position, the cutting edge of the saw blade, especially the cutting edge of the shaving saw blade, hits the end surface of the workpiece, causing chipping and abrasion, which shortens the life of the saw blade and makes it unnecessary to replace the saw blade. The problem was that it had to be done frequently.

An object of the present invention is to improve the above-mentioned problems, and when cutting a workpiece with a saw blade, when returning from the end position of the saw blade to the original starting position, the cutting edge of the saw blade touches the end surface of the workpiece. b) A new method of using a saw blade that prevents chipping and abrasion from coming into contact with the saw blade and extends the life of the saw blade.

``Structure of the Invention'' (Means for Solving the Problems) In order to achieve the object, the present invention performs cutting by moving a saw blade to a workpiece from a starting position, and moving the saw blade from a starting position to a finishing position at which the cutting is completed. In , the saw blade is lengthened from the cutting surface to the opposite side of the workpiece, or after the end surface of the workpiece is separated from the cutting surface, the saw blade is terminated (the saw blade is returned to the starting position δl from f7 M). This is the cutting method.

Additionally, the present invention provides a saw machine for cutting a workpiece clamped in a vise device with a saw blade held in a saw blade housing, wherein at an end position where the saw blade finishes cutting the workpiece, A saw blade was constructed by providing the saw blade housing such that it could be freely separated from the end surface of the workpiece.

(Function) By adopting a cutting method using a saw blade and a saw machine thereof, the present invention performs VJ1gi processing on a workpiece clamped in a vise device by moving the saw blade from the starting position, and the saw blade finishes cutting. When the saw blade reaches the end of cutting (when returning from iz W to the starting position,
By turning the saw blade from the cutting surface to the side opposite to the workpiece, or by moving the end face of the workpiece away from the l and Q cross sections, the tip of the saw blade can be returned without contacting the beveled end face.

This prevents depping and wear, so the length of the saw blade is J? This improves lifespan and reduces the need to replace saw blades.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 3 and 4, a sawing machine, for example, a horizontal bandsaw machine 1, is roughly composed of a box-shaped base 3 and a saw blade housing 5. The saw blade housing 5 is supported by a base 3L via a hinge pin 7 so as to be swingable in the vertical direction.

A work table 9 on which a work W to be cut is placed is provided on the base 3.
There is a fixed pipe thread 311 that can freely clamp and fix the workpiece W.
and a movable vise 9311m.
is installed.

The saw blade housing 5 comprises housing parts 13.15, each housing part 13.15 being integrally connected by a beam member 17. This beam member 17''
A control box 19 is provided on the second side.

The clamp portions 13 and 15 of the saw blade housing 5 are provided with drive wheels 21 and 15, respectively. A driven wheel 23 is rotatably mounted via an axle 25.27. An endless band saw blade 29 is wound around the drive wheel 21 and the driven wheel 23. Further, in order to easily attach and detach the band saw blade 29, the driven wheel 23 is provided so as to be movable in the direction M approaching the drive wheel 21.

Although detailed illustrations are omitted, as is well known, the driven wheel 23 is moved by rotating the tensicon handle 31 rotatably provided in the ship housing part 115.

jyj band copper band saw blade 29 constant guide arm 33 and movable joint
The blade edge is guided and held directly downward by the id arm 35, so that both J id arms 33, 3! A cut portion is formed between -+. The L double-side arm 33, 35 is supported by the n-side member 37 fixed to the beam part shrine 17, and a guide 4 is attached to the T end by twisting the saw blade 29 vertically. Band saw blade guides 39, 41 are each provided.

The fixed guide arm 33 is fixedly supported by a guide portion 4437, and the movable guide arm 35 adjusts the cutting portion of the saw blade 29 according to the size of the workpiece W to be cut. It is supported so that its position can be freely adjusted in the direction toward and away from the fixed guide arm 33.

Is the saw blade housing 5 relative to the workpiece W? l) Saw blade 29
In order to cut into the workpiece W and to separate the workpiece W, it is configured to swing vertically around the hinge bin 7 by the operation of a hydraulic cylinder 45 equipped with a piston rod 43. That is, when pressure oil is supplied to the hydraulic cylinder 45, the saw blade housing 5 rises, and when the pressure oil is removed from the hydraulic cylinder 45, the saw blade housing 5 descends due to its own weight.

The work table 9, as shown in Figure M4,
A plurality of support rollers 4 extend rearward and are rotatable at appropriate intervals in the front-rear direction (left-right direction in FIG. 4).
7 is provided. Further, a material feeding vice device 49 for feeding the workpiece W is provided at the rear (right side in FIG. 4) of the vice device 11. This material feeding vice device 11 includes a fixed vice jaw 49f and a movable vice jaw 4.
9m.

and a material feeding vise base 49B, and a feeding cylinder 51 for feeding the material feeding vice device 49 in the front and back direction is attached to the material feeding vice space 498 via a piston rod 53.

The saw blade housing 5 is provided so as to be freely movable in the front and rear directions. More specifically, as shown in FIG.
The saw blade housing 5 is swingably provided on bearings 55 and 57 that are supported on the front and rear (left and right in FIG. 1) of the hinge bin 7. It is fixed with bolts 61 so as not to move back and forth.

A piston rod 63 is connected to a bolt 6 through a support block 65 at the rear part of the hinge bin 7 (the cloth part in FIG. 1).
It is fixed at 7. Six hydraulic cylinders each having a piston rod 67 are attached to the bearing 57 with bolts 71.

A plurality of bearings 75 are attached to the pistons 73 in the six hydraulic cylinders, so that when the saw blade housing 5 swings about the hinge bin 7, the hydraulic cylinders 75 also swing together. There is.

In FIG. 1 of the hydraulic cylinder 75, an A boat is connected to the left cylinder chamber, and a B boat is connected to the right cylinder chamber. Therefore, supply pressure oil to boat A,
By removing the pressure oil from the B boat, the saw blade housing 5
The whole is moved in the direction of arrow C in FIG. 1, and
By supplying pressure oil to the B boat and removing pressure oil from the A boat, the entire saw blade housing 5 is moved in the direction indicated by the arrow.

According to the configuration described above, when cutting the work W with the band saw blade 29, pressure oil is supplied to the B boat and the entire saw blade housing 5 is moved in the direction indicated by the arrow in FIG. do. Next, the saw blade hinge 7 is lowered from the starting position of the band saw blade 29 provided above the workpiece W, and the band saw blade 29 performs cutting into a 9-ku W. When cutting is performed, the WI saw blade 29 temporarily stops at a cutting end position provided below the workpiece W, and then returns to the original starting position.

At this time, when pressure oil is supplied to boat A and pressure oil is removed from boat B, the entire saw blade housing 5 is moved in the direction of arrow C, and workpiece W 1;? ) The saw blade housing 5 is raised and the band saw blade 29 is returned to the starting position while being separated from the cross section.

When the band saw blade 29 is returned from the cutting end position to the original starting position, it is in a position away from the cut surface of the workpiece W without making contact with it, so that chipping of the tip of the band saw blade 29 or 11! ! Because it can prevent millet sales,
The rAR life of the band saw blade 29 can be improved, and the number of replacements of the band saw blade 29 is reduced compared to the conventional method.

FIG. 2 also shows that the band saw blade 29 is returned to the start 4 device from the cutting end position after cutting the band saw blade 29.
Another embodiment is shown in which the tip of the workpiece W is turned away from the cut surface of the workpiece W. 1, in FIG.
The base 11B that supports 311m has a front-rear direction (second
One end of a rod 77 extending in the left-right direction in the figure is integrally fixed. A feed base 49B of the feed vise device 49 is attached to this rod 77 so as to be movable back and forth, and a feed cylinder 51 is attached to the other end of the rod 77 via seven support blocks. The tip of the piston rod 53 of the feed cylinder 51 is connected to a support block 79
is inserted into the feed base 49F).

According to configuration E, when the feed cylinder 51 is operated, the piston rod 53 is moved back and forth, so the four feed vise devices are moved forward (Q).

Therefore, the workpiece W is clamped by the vice device 11 and the feed vice device 49. By lowering the saw blade housing 5 in the t-positioned state, the band saw blade 29 is lowered from the start position and lowered to the workpiece W.

When it is detected, for example, by a limit switch, that the band saw blade 29 reaches the cutting end device 1 after the cutting process is completed, the band saw blade 29 stops, for example, at -.

Next, the movable vise 9311m of the vise device 11 is unclamped with respect to the fixed vise device 11r, and the workpiece W is moved to an arbitrary j'fi 111 by the feed vise device 49.
It's 11. 45 Return (move to the right in Figure 2). With J5 in this state, move the saw blade housing 5 upwards.
By tightening the band saw blade 29 by 1.7 J IfI'
i Ending position "You will be returned to the original starting position from t.

Then, the band saw blade 29 cut off the original star t-417i+! ? Since the end surface of the workpiece W is separated from the cut surface when the workpiece W is returned to the cutting surface, the tip of the saw blade 29 is separated from the end surface of the workpiece W without contacting it.As a result, 9 of t1 same as the above-mentioned embodiment
) The I-channel will be taken over by Qin.

J3, this invention is not limited to the embodiments described above, but can be implemented in other embodiments by making appropriate changes. For example, in this embodiment: 1. As an example, we will use a horizontal band saw 'fA I' as a saw machine.
It does not matter if it is a vertical saw machine or other KA machine.

E. Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, the saw blade is moved from the starting position to cut the work clamped in the vise device 4,
When the saw blade reaches the cutting end position, when returning the saw blade from the IJ end position to the start position, move the saw blade away from the cutting surface to the opposite side of the workpiece, or move the end surface of the workpiece away from the cutting surface. By doing so, the tip of the saw blade is returned to the end surface of the workpiece without contacting it.

Therefore, the tip of the saw blade can be prevented from chipping or abrasion, making it possible to prolong the life of the saw blade and eliminating the need to frequently replace the saw blade.
This reduces the number of saw blade replacements and increases productivity by 11 JFr.

[Brief explanation of drawings]

Figure '1 shows the main part of this invention, and I in Figure 3.
- An enlarged view taken along the line I, FIG. 2 is another embodiment in place of FIG. 1, an enlarged view taken along the line ■-■ in FIG. 4, and FIG. Front view of an example horizontal bandsaw machine,
FIG. 4 is a plan view of FIG. 3. '1...Horizontal band $1iii machine (saw machine) 5...Saw blade housing 7...Hinge pin 11...Vise device 29...Profitable saw blade (saw blade) 49...Material feeding Vise device 51...Feed cylinder 53...Piston rod 55.57...Bearing 63...Piston rod 69...Pressure oil cylinder 77...Rod

Claims (2)

[Claims] (1) Move the saw blade from the start position to the workpiece to perform cutting, and at the end position after cutting,
moving the saw blade away from the cutting surface to the opposite side of the workpiece;
Alternatively, a cutting method using a saw blade is characterized in that the end face of the workpiece is moved away from the cutting surface and then the saw blade is returned from the end position to the start position. (2) A saw machine that cuts a workpiece clamped in a vise device with a saw blade held in a saw blade housing, at an end position where the saw blade finishes cutting the workpiece,
A saw machine characterized in that the saw blade housing is provided so as to be freely separable from an end surface of a workpiece.