JPS5838287B2 - Cutting equipment using an endless diamond tip saw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting machine using an endless diamond tip saw, and in particular, the cutting machine tire has a large number of rollers attached to the outer periphery of a support wheel, and the rotation of some or all of the rollers is controlled. It is characterized by the fact that it

In recent years, when cutting hard materials such as metal products and stones,
A cutting machine using an endless diamond tip saw is used.

An endless diamond cutting saw is a steel endless band with many diamond chips attached to the lower edge, while a cutting machine is made up of a pair of rotating wheels (tires), and the endless band is The endless band portion of the diamond chisop saw is hung on this tire and the tires are biased to open, thereby tensioning the endless band and causing it to rotate.

This cutting device has the advantage of having a high cutting force on hard materials, but on the other hand, it has the disadvantage of a short lifespan because the attachment part of the diamond tip of the endless band is prone to cracking and breaking. It had been.

This drawback is due to the fact that the endless band and the diamond tip of the endless diamond tip saw are completely different materials, and as mentioned above, when the endless band and the diamond tip are tensioned by the tire of the cutting device, the endless band The diamond tip is pressed against the tire, curves to follow the circular shape of the tire, and sticks closely to it, but since the diamond tip is hard and does not deform at all, the endless band is bent at the attachment point. As a result, that part breaks.

In order to eliminate such drawbacks, the present inventor installed a large number of protrusions 2 at regular intervals on the outer periphery of the tire 1 of a cutting device, and on the other hand, the diamond tip saw has a diamond tip attached to the endless band 3. 4 are attached at the same spacing as the ridges 2, and when it is hung on the tire 1, the diamond chips 4 are positioned between the ridges 2, and the endless band 3 is placed in the area where the diamond chips are attached. He invented a device that maintains a straight line and does not bend, and has applied for a patent.

This device was extremely superior in that it not only significantly extended the life of diamond-tipped saws, but also increased cutting speed and cutting accuracy compared to previous methods. Due to the slight difference between the installation interval and the diamond tip installation interval with respect to the endless band, and the load applied to the diamond tip during cutting, the contact position of the protrusion with respect to the endless band tends to shift gradually during operation. Therefore, if it is attempted to operate continuously for a long time, the contact position of the protrusion against the endless band approaches the attachment position of the diamond tip, resulting in breakage of this part.

The present invention is an improvement on the above-described cutting device, in which the protrusions protruding from the outer periphery of the tire are changed to rollers, and a drive belt is hung on this, so that the rotation speed of the tire is relative to the rotation speed of the drive belt. be able to change gears,
The deviation in the contact position between the endless band and the roller is adjusted so that the roller always contacts the endless band at a predetermined position.

Therefore, the drive belt and tires are rotated by separate drive motors, but the embodiment of the present application shows an example of a system in which both are rotated by the same drive motor.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 10 indicates a single drive tire.

This tire 10 has a large number of rollers 1 on the outer periphery of a support wheel 11.
2 are attached at regular intervals, and a drive belt 13 is further hung around them.

The drive tire 10 is rotatably attached to the machine frame 14, while the drive belt 13 is suspended between a drive roller 15 and a guide roller 16, and is rotated by the rotational force of the drive roller 15. .

Therefore, the diamond tip saw 17 has a drive belt 130.
It is rotated by rotation, and at the same time the tire 10
is also rotated by this.

For this reason, the tire 10 rotates at the same circumferential speed as the rotational speed of the drive belt 130;
The rotation speed of the drive belt 13 is adjusted so that the roller 12 hits a predetermined position on the endless belt 18.

That is, an adjustment gear 20 is rotatably attached to the support shaft 19 of the tire separately from the tire 10, and on the other hand, several gears 21 that mesh with the gear 20 are rotatably attached to the support wheel 11 of the tire. It is being

All or part of the roller 12 is connected to a pulley 22.
, 23 communicate with the gear 21.

Therefore, the roller 12 is wet! J22, 23 and gear 2
1 and rotates in synchronization with the adjustment gear 20.
The other rollers rotate freely.

Here, the relationship between the drive roller 15 and the adjustment gear 20 will be explained. First, the adjustment gear 20 is connected to the tire 1 It is adjusted so that it rotates at a constant speed.

That is, when the drive roller 15 is rotated at a predetermined circumferential speed A,
As a result, the drive belt 13 rotates at the same circumferential speed A, and the tires 10 further rotate at the same circumferential speed.

At this time, the adjustment gear 20 has the same rotational speed a as the tire 10.
When the gear 20 rotates at
Furthermore, since the pulley 22 also rotates in the same direction at a constant speed and is relatively stationary, the roller 12 acts as if it were a protrusion fixed to the support wheel 11.

In this state, if the rotational speed of the adjustment gear 200 is increased by α to (a+α), the gear rotates by α in the clockwise direction relative to the tire 11.

Then, the gear 21 that meshes with this gear and the roller 12 that rotates in communication with the gear rotate relatively counterclockwise by an amount commensurate with the rotation.

Then, the tire 11 runs clockwise with respect to the drive belt 13, and the contact point of the roller 12 with the drive belt 13 is displaced clockwise.

As an example of a method for rotating the adjustment gear 20 in this manner, the figure shows a method using a differential gear device.

In the figure, numeral 24 is a differential gear device.

This differential gear device is the same as a normal one, and 25 is a drive pinion, 26 is a ring gear, 27 is a tread gear, and 28 and 29 are side gears.

One of the side gears 28 is equipped with a drive motor 30.
are connected to each other, and this gear 28 is connected to pulleys 31 and 3.
It is connected to the drive roller 15 via 2.

Further, the other gear 29 is connected to the pulley 33 after being appropriately decelerated.

A worm gear 34 is attached to the drive pinion 25, and this gear 34 is connected to an adjustment motor 35.

This adjustment motor 35 is used to adjust the rotation speed of the side gear 290 relative to the side gear 28, and by rotating it forward or reverse, the rotation speed of the side gear 29 relative to the side gear 28 is changed, thereby adjusting the rotation speed of the adjustment gear 200 relative to the tire 11. Change it.

Of course, in the above, the reduction ratio between the side gear 29 and the pulley 23 is such that when the drive pinion 25 is stopped, the rotational speed of the adjustment gear 20 is balanced with the rotational speed of the drive roller 15, so that it is normal. The adjustment motor 35 can be operated in a stopped state,
It goes without saying that it is desirable to correct the deviation by rotating forward and backward only when a deviation occurs in the contact position of the roller 12 with respect to the endless band 18.

The method of detecting the deviation of the contact position of the roller 12 with respect to the endless band 18 is not particularly limited, and the figure shows a method using a phototube detection device as an example.

That is, the endless belt 18 is provided with a through hole 37 at at least one location, and a photoelectric detection device 38 is provided on the rotating orbit of the endless belt 18 to detect the point at which the through hole 37 passes. One or more through holes 39 are drilled and a phototube sensing device 40 is provided on the rotational path of the through holes 39 to detect the time of passage thereof.

Since the endless band 18 has extremely low elasticity, it is positioned at a fixed point on each diamond chip 36 when the through hole 31 reaches a predetermined position.

Accordingly, the photocell detection device 40 is connected to the roller 12 shown in FIG.
When the diamond tip is in contact with the endless band 18 in the middle of the attachment position, the through hole 39 is attached to the detection position.

That is, in this manner, when the phototube detection devices 38 and 40 detect the through holes 37 and 39 at the same time, the positional relationship between the roller 12 and the endless band 18 is normal, and there is a slight difference in the detection time between the two. At this time, a shift occurs in the positional relationship between the roller 12 and the endless band 18.

For this reason, the difference in detection time of the through hole is detected by both detection devices, and the adjustment motor 35 is driven in accordance with this difference, thereby correcting the deviation.

The number of diamond chips 36 to be attached to the endless band 18 is determined by the number of rollers 12 provided in the tire 11 and the number of through holes 39, and the number of diamond chips 36 to be attached to the endless band 18 is determined by the number of through holes 39. 40 needs to be an integral multiple of the number of rollers that pass through a certain point after detecting the through hole 39 and before detecting the next through hole.

Also, reference numeral 10' is a tire of the driven bait, 12' is a roller, and 1
4' is a machine frame, 15' is a driven roller, 16' is a guide roller, 19' is a support shaft, 20' is an adjustment gear, 21' is a gear, 2
2', 23' are pulleys, 24' is a differential gear device, 31'
, 32' is a pulley, 33' is a pulley, 34' is a worm gear, 35' is an adjustment motor, 37' is a through hole, 38' is a photoelectric detection device, 39' is a through hole, and 40' is a photoelectric detection device. , these are the same as those for drive measurement, except that the differential gear 24' is not equipped with a drive motor.

Next, the operation of operating the cutting device configured as described above will be explained.

First, the 1 drive motor 30 is started.

The rotation is then transmitted to the side gear 28 and at the same time to the drive roller 15 via the pulleys 31 and 32.

Then, the rotation is transmitted to the diamond tip saw 17 and the tire 10.

Further, the rotation of the diamond chipsaw 17 is transmitted to the driven belt 13' of the driven measurement, and the rotation thereof is transmitted to the driven rigid tire 1σ and the driven roller 15'.

The rotation of the driven roller 15' is controlled by pulleys 32' and 31.
The rotation of the side gear 28' is transmitted to the side gear 29' via the differential pinion 27', and the rotation rotates the adjustment gear 20', thereby rotating the cutting device. becomes operational.

Assume that the tire rotates 100 times late and the roller 12 is biased toward the trailing diamond chip 36R as shown in FIG.

Then, when the through hole 37 enters the phototube detection device 38, the transmitted light 39 does not reach the phototube detection device 40, so the through hole 37
There is a delay in the detection time of the detection of the transparent light 39 compared to the detection time of .

Therefore, this delay is transmitted to the adjustment motor 35 through a control device (not shown), and the adjustment motor 35 is driven in advance.

Then, the rotation is transmitted to the worm gear 34, and further transmitted to the differential pinion 27 via the drive pinion 25 and ring gear 26.

Here, the side gear 28 is connected to a drive motor 30, and while it rotates at a constant speed, the side gear 29 increases the speed.

Since this speed is transmitted to the adjustment gear 20, the gear rotates clockwise in the figure relative to the support wheel 11, and the gear 21 meshing with this gear and the roller 12 rotated by the gear rotate counterclockwise. Rotate.

Then, the roller 12 rolls against the drive belt 13,
It then moves toward the pre-measured diamond tip 36F and eventually comes to a position between the diamond tips 36R and 36F.

It should be noted that when the roller 12 is biased toward the leading measurement diamond chip 36F measurement, the adjustment motor 35 is driven to the delay measurement, contrary to the above, and the adjustment of the driven measurement tire is also performed in the same manner as described above. be.

As detailed above, the present invention provides a tire for a cutting device in which a large number of rollers are attached to the outer periphery of a support wheel, a drive belt is hung on the tire, and the speed of the drive belt is adjusted. This makes it possible to simply straighten the diamond tip attachment part so that the roller comes into contact with the diamond tip attachment point of the endless band of the diamond tip saw suspended from the tire. This has the effect of increasing the cutting ability of the diamond-tipped saw, improving cutting accuracy, and prolonging the life of the diamond-tipped saw.

[Brief explanation of the drawing]

Fig. 1 is a plan view schematically showing a cutting device using a conventional diamond tip saw, Fig. 2 is a plan view showing an embodiment of the present invention, Fig. 3 is a partially cutaway rigid surface view of the same, and Fig. 4 The figure is a plan view showing the essential parts of the same, FIG. 5 is a surface survey view of the same, and FIG. 6 is a vertical sectional view schematically showing the differential gear device. 10: Tire, 11; Support wheel, 12; Roller, 13; Drive belt, 14; Machine frame, 13; Drive roller, 16; Guide roller, 11; Diamond chipsaw, 18: Endless band, 19; Support shaft, 20 ;Adjustment gear, 21;Gear, 22,
23; pulley, 24: differential gear device, 25; drive pinion, 26; ring gear, 27; differential pinion,
28, 29; Side gear, 30; Drive motor, 31, 3
2, 33; Pulley, 34; Worm gear, 35; Adjustment motor, 36; Diamond tip, 37; Through hole, 38;
Phototube detection device, 39: Transmission, 40; Phototube detection device.

Claims (1)

[Scope of Claims] 1. A pair of tires each having a plurality of rollers attached to the outer periphery of a support wheel at substantially the same intervals as the attachment intervals of diamond chips in an endless band diamond chisop saw, and a pair of guide rollers and a drive roller, respectively. In a cutting device in which a pair of drive belts are suspended between a pair of drive belts and an endless diamond chip is hung on these, the tires and drive rollers are connected to a drive motor and rotated, and the tires are rotated at a speed corresponding to the rotational speed of the drive belt. A cutting device using an endless diamond-tipped saw characterized by variable speed. 2. A pair of tires consisting of a plurality of rollers attached to the outer periphery of a support wheel at approximately the same intervals as the mounting intervals of diamond chips in an endless diamond tip saw, and a pair of drive belts attached to each pair of guide rollers and drive rollers. In a cutting device in which an endless diamond tip saw is hung on the cutting device, a support ring is rotatably attached to the support shaft, an adjustment gear is rotatably attached to the support shaft, and several pieces are attached to the support ring. A gear is rotatably mounted and meshed with the adjustment gear, and the gear is connected to a roller via a pulley. A drive motor is connected to the drive roller via a pulley, and a drive pinion, ring gear, and tef gear are connected to each other. and a pair of side gears, which are connected to one side gear of a certain differential gear, and the other side gear is appropriately decelerated and connected to the adjustment gear, and the drive pinion is connected to the adjustment motor via the worm gear. A cutting device characterized in that the side gear and the drive roller are rotated at a constant speed by a drive motor, and the rotation speed of the other side gear is adjusted by changing the speed of an adjustment motor.