JPH0513458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a diamond band saw that allows the band saw to run at ultra-high speed.

[Conventional technology]

Generally, band saws include a horizontal band saw in which the band saw runs horizontally (sideways),
It is known that there are vertical band saws that run in the vertical direction.

Among these, the horizontal band saw is a type in which a driving wheel and a driven wheel around which the band saw is hung are attached to the left and right sides of a mounting frame for these wheels, and this frame swings in the vertical direction relative to the positioned material to be cut. There are many structures.

In addition, in a vertical band saw, both driving and driven wheels on which the band saw is hung in the vertical direction of the frame are arranged in a fixed position, and the cutting material fixed to the table moves in the direction of the band saw. It is.

[Problem that the invention attempts to solve]

Both types of band saws have their own advantages and disadvantages, so the material to be cut, the cutting form, etc. are selected to take advantage of their advantages.

However, when the unique properties of the cutting material, the structure and running speed of the band saw itself are special,
Even with any of the above-mentioned types of band saws, cutting operations may not be possible in more favorable conditions.

For example, this is the case when cutting difficult-to-cut materials such as ceramics. In other words, such difficult-to-cut materials are cut by running a diamond band saw, which is formed by implanting or electrodepositing diamonds on a band as a cutting edge, at ultra-high speed. Since it is a cutting of
It is necessary to pay special attention to the traveling guide and support of a band saw running at high speed, the handling of cut materials, and the disposal of chips.

[Means for solving problems]

In view of the above-mentioned needs, the present invention was devised for the purpose of providing a diamond band saw having a type and structure different from those of conventionally known band saws. A band saw is equipped with a driving wheel and a driven wheel on the left and right sides, and diamond cutting blades are implanted or electrodeposited on one side of the width of both wheels, and the cutting blades are attached to the back side of the machine frame. On the other hand, a saddle that moves back and forth with respect to the cutting blade is provided at a portion of the machine frame opposite to the cutting blade of the band saw, and a saddle that moves back and forth with respect to the cutting blade is provided on the front side of the saddle. , is equipped with a table that can be fixed freely and on which the material to be cut can be attached to the front surface, the material to be cut is fixed to the front surface of the table, the table is positioned above the saddle surface, and the saddle is placed on the machine frame. While reciprocating back and forth,
The cutting material is cut on the lower side in the vertical direction by moving the table in appropriate pitches toward the lower side of the saddle surface.

[Effect]

The cutting blade of the diamond band saw runs at high speed in the horizontal direction, and the saddle reciprocates back and forth to feed the material to be cut, so the material falls downward due to its own weight and is removed from the cutting blade. Leave.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a front view showing the basic outline of an example of the diamond band saw of the present invention, Fig. 2 is a left side view thereof, Fig. 3 is a plan view showing an outline of the support drive mechanism of the work table on which the cutting material is attached, and Fig. 4 The figure is a side sectional view of an example of the support guide part of the band saw in the band saw of the present invention.

In Figures 1 and 2, 1 is the band saw body including the outer cover and machine frame, 2 is the drive wheel installed on the right side of the front side of the main body 1, and 3 is the driven wheel similarly installed on the left side. , between both wheels,
A band saw 4, which is constructed by planting or electrodepositing a large number of diamond blades 4a on the sides of a thin steel strip, is hung around the belt saw. The distance between the axes of both wheels 2 and 3 can be changed. Reference numerals 5 and 6 designate support and guide parts on the tension side of the band saw 4 that sandwich the band saw 4 from above and below to support and guide its running;
The area between 6 is the cutting part of the diamond band saw of the present invention.

7 is the back (rear) side (second
(see figure), a saddle 8 is provided on the main body 1 so as to be freely movable and fixed in the front and rear directions; A cutting material W is attached to the front surface of this table 8.

In the plan view schematically showing the support drive mechanism of the table 8 in FIG. 3, 71 is a rail on which the saddle 7 is slidably mounted, 72 is a feed screw provided parallel to this rail 71, and 73 is a rail on which the saddle 7 is slidably mounted. This is a feed motor for a saddle that rotates a nut member (not shown in the figure) screwed into the feed screw, and the positive,
Due to the reverse rotation, the saddle 7 becomes the cutting blade 4a of the band saw 4.
It can be moved back and forth.

Similarly, in the table 8 shown in FIG. 3, a rail 81 is provided perpendicularly and parallel to the front surface of the saddle 7, and is fitted into a sliding groove 81a formed on the back surface of the table 8. Reference numeral 82 denotes a table feed motor provided on the upper surface of the saddle 7. The output of this motor is transmitted to the table 8 via a transmission mechanism 83 including a rack and pinion, and the table 8 is moved to the saddle 7.
Move it up and down in front of the

Reference numeral 84 indicates T grooves arranged vertically in the front surface of the table 8, and reference numeral 85 indicates a mount used as a mounting attachment for the cutting material W to be positioned and fixed in the T groove 84.

Next, an example of the structure of the support guide parts 5 and 6 of the band saw 4 will be explained with reference to FIG. 4.

Since the support guide parts 5 and 6 have the same left-right symmetrical structure, only one of them will be described here.

Therefore, the support guide part 5 is attached to the band saw 4,
A band saw 4 which runs at high speed is disposed on the side receiving the vertical component via a bracket-shaped mounting arm 9 provided so as to protrude from the main body 1.
is supported and guided by abutting rollers or the like on its upper and lower surfaces and back surface.

That is, 51 is a first roller that comes into contact with the upper and lower surfaces of the band saw 4, 52 is a second roller that comes into contact with the back surface of the band saw 4, and both rollers 51 and 52 are attached to a roller bracket 53.

Note that 51a is a sliding guide portion of the band saw 4 made of insert members applied to both upper and lower surfaces of the band saw 4 on the side of the first roller 51;
51c is a liquid chamber formed on the inner surface of the guide portion 51a, and 51d is a flow path for supplying pressure liquid to the liquid chamber 51c.

In the diamond saw of the present invention, the second
A structure is provided in which the roller 52 can move forward and backward on the line of action of the vertical component force applied to the band saw 4.

That is, the second roller 52 is attached to an internal bracket 55 disposed within a roller housing 54 formed in the bracket 53, and
On the back side of this internal bracket 55,
It is attached to a support rod 56 that is parallel to the direction of the vertical component force applied to the band saw 4, and further, this support rod 56 is closely passed through the partition wall surface 53a of the roller bracket 53 so that it can move forward and backward.

A coil spring 56c is inserted into the support rod 56 which penetrates the wall surface 53a and protrudes into the sensor housing 54a, sandwiched between a fixed spring receiver 56a and a slidable spring receiver 56b. Further, the rear end (right side in the figure) of this rod 56 is tightly and loosely inserted into a support hole 57a of an adjustment screw 57 that pushes the sliding spring receiver 56b from its back side.

The adjustment screw 57 has a thread 57b cut on its outer surface, and is attached to the bracket 53 by threading the thread 57b into a thread 53c formed on the rear wall 53b of the sensor housing 54a.

On the other hand, a marker member 58 made of a shaped metal piece is attached to the rod 56, and moves forward and backward together with the rod 56.
8, inside the sensor housing 54a,
A proximity switch 59 is provided as a displacement detection sensor in this invention.

In the diamond saw of the present invention, the second
The members from the roller 52 to the proximity switch 59 form an example of means for setting and detecting the vertical component of the band saw 4, and thus constitute an example of the diamond band saw of the present invention.

In the diamond band saw of the present invention, the band saw 4 is horizontally disposed in front of the machine frame with the diamond cutting blade facing backward, and the saddle 7 is moved back and forth to perform cutting operations and cuts on the material W to be cut. In addition to moving away from the blade, the cutting position of the cutting material W is determined by the upward and downward movement of the table 8.
The cut material W falls downward due to its own weight,
This also allows it to move away from the cutting edge, thus automatically avoiding clogging of the cutting part with chips.

In addition, since the cutting and retreating operations are performed by the back and forth movement of the saddle 7, and the structure of the support and guide parts 5 and 6 that support and guide the band saw, when an excessive vertical force acts on the band saw 4, the cutting material W is I made it move away from Band Saw 4 immediately, so
Trouble such as the diamond forming the cutting edge 4a being melted or the band itself breaking,
Can be avoided accurately and quickly.

Next, this point will be explained.

In the vertical component force setting and detection means formed by the members from the second roller 52 to the proximity switch 59, the vertical component force is set by turning the adjusting screw 57 to adjust the repulsive force of the spring 56c.
In this state, when cutting a predetermined material W, the vertical force applied to the band saw 4 is received by the second roller 52, which is pushed forward by the repulsive force of the spring 56c.

At this time, if the vertical component force is smaller than the set repulsive force of the spring, that is, the set vertical distribution, the second roller 52 does not retreat and the cutting operation continues.

However, if the vertical component becomes larger than the set repulsive force, that is, the set vertical component, the second roller 5
The rod 56 supporting 2 moves back. This retraction of the rod 56 causes the marker member 58 to be displaced backward, and this displacement of the marker member 58 causes the proximity switch 5 to move backward.
Activate 9.

When the proximity switch 59 is activated, a reverse command is issued to the feed motor 73 of the saddle 7, which is in charge of feeding the cutting material W into the cut, and the saddle 7 moves the cutting material W away from the band saw 4. The control unit is configured so that it can be moved backward. An example of the configuration of this control section is as follows.

That is, the rotation of the feed motor 73 of the saddle 7 is controlled in response to the output of the amplifier by a drive control signal that is generated in the control section based on the numerical value set in the setting section such as the feed speed of the saddle. When this happens, a reversal command circuit is inserted into the control circuit of the motor 73 via an interrupt circuit so as to output an output in response to the operation of the proximity switch 59. In this case, it is preferable that the reversal command circuit is capable of arbitrarily setting the reversal time and speed of the motor 73.

[Effect of idea]

The present invention is as described above, in which a diamond band saw is arranged so as to run at high speed in the horizontal direction, and a table with a cutting material attachment part formed on the front side is placed vertically and vertically in front of the saddle relative to the cutting blade of the band saw. The saddle is mounted so that it can be moved and positioned to determine the cutting position, and the saddle is moved back and forth to cut into the material to be cut and feed it backwards. It is possible to avoid problems caused by chips and cut materials.

Therefore, the present invention is extremely suitable for use as a diamond band saw for cutting difficult-to-cut materials such as ceramics using a band saw that runs at ultra-high speed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the basic outline of an example of the diamond band saw of the present invention, Fig. 2 is a left side view thereof, Fig. 3 is a plan view showing an outline of the support drive mechanism of the work table on which the cutting material is attached, and Fig. 4 The figure is a side sectional view of an example of the support guide part of the band saw in the band saw of the present invention. DESCRIPTION OF SYMBOLS 1... Band saw cutting machine main body, 2... Drive wheel, 3... Driven wheel, 4... Diamond band saw, 5... Band saw support guide part, 6
...Band saw support guide, 7...Saddle, 7
1...Rail, 72...Feed screw, 73...Saddle feed motor, 8...Table, 81...Guide rail, 81a...Sliding groove, 82...Table feed motor, 83...Table feed motor Feed transmission mechanism, 84...T groove, 85...fixing frame for cutting material,
W... Cutting material.

Claims (1)

[Scope of utility model registration request] A band saw is equipped with a driving wheel and a driven wheel on the left and right sides of the front side of the machine frame, and diamond cutting blades are implanted or electrodeposited on one side of both wheels in the width direction. The above-mentioned machine frame is provided so as to be hung around the back side of the machine frame, while a saddle that moves back and forth with respect to the cutting blade is provided at a portion of the machine frame opposite to the cutting blade of the band saw. It is equipped with a table that can be moved vertically and fixedly relative to the blade, and the cutting material can be attached to the front surface of the table.The cutting material is fixed to the front surface of the table, and the table is positioned above the saddle surface, and the The material to be cut is cut on the lower side in the vertical direction by reciprocating the saddle back and forth on the machine frame and moving the table in appropriate pitches toward the lower side of the saddle surface. Horizontal diamond bandsaw.