JPS6034217A - Cutting resistance main-component detecting method and device - Google Patents

Abstract

PURPOSE:To immediately transmit the detected shift quantity to a fluid pressure value unit for response control without failure at a low cost by mechanically detecting the change of the cutting resistance main-component as the linear shift of a shift member. CONSTITUTION:A pulley 47 is freely coupled with a shaft 45, and an intermediate rotor 51 adjacent to the pulley 47 via a spacer 49 is fixed. The intermediate rotor 51 has a hole 55, and a lub member 57 planted on the pulley 47 is freely coupled with it. A ball joint 69 is provided at the upper end of the member 57, and a ring is horizontally provided. A rotary shaft 75 is swayably provided around the shaft 45, a lever link 77 is fitted near the outside end, and a yoke-like joint 81 is swayably connected at the lower end. When the cutting resistance main-component is increased, the member 57 is shifted, the link 77, the shaft 75, and a lifter lever 89 are swayed, and the rise of the slide ring 97 is detected as the linear shift of the shift member.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for detecting the principal force component of cutting resistance, and more particularly, the present invention relates to a method and apparatus for detecting the principal force component of cutting resistance, and more particularly, the present invention relates to a method and apparatus for detecting the principal force component of cutting resistance, mainly for a band saw machine, a circular saw machine, a machine saw, etc. It is related to the device.

First, the background of creating the present invention using the horizontal bandsaw machine illustrated in FIGS. 1 and 2 will be explained.

In the first article and FIG. 2, the illustrated horizontal bandsaw machine 1 is composed of a box-shaped base 3 and a cutting head 5, and the cutting head 5 is pivoted to the base 3 via a horizontal hinge pin 7 so as to be able to rise and fall. supported.

A workpiece W is placed on a part of the base 3 described above (r
The work table 9 is equipped with a vice device 1 comprising a fixed jaw 11f and a movable jaw E-11m that can freely clamp and fix the workpiece W to be cut.
1 is provided.

Said cudding head 5 is provided with housing parts 13.15 at a distance 1 on both sides, each housing part 13.1
5 are connected by a beam section 17 with a control box 19 on top.

A driving wheel 21 and a driven wheel 23 are attached to the housing portion 13° 15 of the cudding head 5, respectively, and the shaft 2 is connected to the shaft 2.
5.27 is installed inside the C, and the driving wheel 21 and the driven wheel 23 are equipped with a cutting blade or the like.
- The endless bandsaw blade 29 is a saw blade.

Therefore, by driving the drive wheel 21, the band saw blade 2 is driven to travel in order to cut the material W to be cut.

In the cutting area where the band saw blade 29 cuts the material W to be cut, the tooth tips are supported vertically toward the lower saw j by a pair of fixed guide member 31 and movable guide member 33. has been done.

The fixed guide member 31a3 and the movable guide member 33 are attached to a guide portion 35 fixed to the beam portion +417.

The fixed guide member 31 is fixedly attached to the guide member 35 (
=J (J), and the movable guide member 33 is mounted so that its position can be freely adjusted to correspond to the size of the material W to be cut.

Further, the cutting head 5 has a piston rod 39
The lowering cylinder 35 is configured to rotate downward about the hinge pin 7, and the action of the lowering cylinder 37 allows the band saw blade 29 to cut into the material W to be cut. It is possible to control upward departure.

4T, that is, -[Godogi's known horizontal bandsaw machine 1 having the following configuration (
In the cutting device (cutting device), the cutting head 5 is raised by supplying pressure oil to the piston-side chamber of the lifting cylinder 7 and extending the piston rod 39 with L.

3- Then, by discharging the pressure oil in the chamber on the piston side of the lifting cylinder 37, the cut and r leg head 5 is lowered into a float.

Therefore, by arranging an appropriate control valve in the discharge passage connected to the piston-side chamber of the four-down cylinder 37 and adjusting the control valve appropriately, the band saw blade 29 (cutting blade) can cut into the material W to be cut. can be controlled appropriately.

The arrow pointing in the opposite direction to the moving direction of the bandsaw blade 29 shown on the workpiece W in FIG. There is.

For example, when the material W to be cut is a round bar as shown in the figure, the cutting length at which the band saw blade 29 contacts the +4W point is 9.5 times near the upper end, and becomes the longest while cutting the diameter portion.
It gets shorter again towards the bottom.

In other words, the cutting resistance main component force 41 and the cutting resistance back force 43
It also changes from time to time.

As mentioned above, the horizontal bandsaw machine 1 is capable of detecting momentary changes in the cutting length because the rotational moment around the hinge pin 7 due to the weight of the cutting blade 4 autonomously controls the cutting speed. In addition to autonomous control, it is necessary to control the descending speed (cutting speed) of the cutting head 5 in order to improve cutting efficiency and prevent damage to the saw blade.

The present invention provides a method and apparatus for detecting the cutting resistance main component force 41 as the above-mentioned method and apparatus for detecting momentary changes in cutting length, and is preferably carried out below based on FIGS. An example will be explained in detail.

The shaft 45 shown in FIG. 3 is the rear end of the shaft 25 of the drive wheel 21. The shaft 45 is a worm shaft and the drive wheel 2
There is also a band saw machine 1 in which the rotational force is transmitted through the A-m wheel and the E-wheel on the outer periphery of the band saw 1, but the technical concept is the same in that there is no slippage after the shaft 45 and the rotational force is transmitted to the drive wheel 21. .

A pulley 47 is loosely fitted onto the shaft 45, and a belt is wound around the output shaft of a drive motor (not shown). Adjacent to (above in FIG. 3) the pulley 47, an intermediate rotating body 51 is fixed to the shaft 45 by a gear 53 with a spacer 49 interposed therebetween.

In this embodiment, the intermediate rotating body 51 has a rectangular block shape, and symmetrical holes 55 are provided at the top and bottom of the figure.
``J''''C, the protruding member 57 implanted in the J-ri 47; A flat slide bush 59 is provided.

The intermediate rotating body 51 is provided with a screw hole 61 that penetrates horizontally through the a and σ pieces, and a contactor 63 having four semicircular arc-shaped parts that abuts against the side surfaces of the protruding member 57 is used as an adjustment screw, for example. 65 is provided via a bullet material 67 whose biasing force can be freely adjusted.

A ball joint 69, which forms part of the converting device, is provided at the upper end of the protruding member 57 in FIG. 4, and engages with the outer surface of the ball of the ball joint 1-69! >A ring 71 with an engaging portion is installed almost horizontally (J).

Next, as shown in FIG. 6, a channel-shaped bracket 73 is attached to the upper surface of the intermediate rotating body 51.
Rotary shirts 1 to 75 are installed horizontally above so as to be swingable around an axis.

As is clear from FIG. 4, a lever link 77 is attached near the outer end of the rotary shaft 75, and a yoke-like joint 81 extending from the aforementioned link 71 is connected to the lever link 77 by a pin 83 on the flat part 79 at the lower end. It is connected so that it can swing freely.

The lever link 77 passes through the []-tally shaft 75 at the upper side and is fixed from the shaft end with the tip poles 1 to 85 (see FIG. 5).

As is clear from FIG. 5, there is a tubular space 187 near the inner end of the rotary shaft 75 between it and the bracket 73.
The lifter lever 89 is connected to the rotary ring 1? 75 to F1
The rotary shaft 75 is fixed at right angles to its axial direction by the tip poles 1 to 91 from the end of the rotary shaft 75.

A steel ball 93 is provided at the free end of the sea urchin lifter lever 89, which is clearly shown in FIG. It is guided and engaged with a hole 99 provided on the outer periphery 7 of the slide ring 97 at the elevator opening t.

As mentioned above, the slide ring 97 is held above by the bearing box 101 and is rotatable as shown in FIG.
A part of the support member 103 (upper part in FIG. 3) is provided with a
Since the elongated hole 105 is prevented from rotating by the oil stopper arm 107, it corresponds to a moving member of J1 rotation that moves only in the 1-down direction in a non-rotating state.

Shown in the upper part of FIG. 3 is a fluid pressure valve device 109 that controls the descending speed of the cudding head 5, in other words, the cutting speed, using the linear backward displacement of the bearing box 101.

According to the apparatus according to the embodiment of the present invention described in detail above, since the main component force 41 of the cutting resistance is extremely small during idle cutting of the band saw blade 29, the protruding member 57 adjusts the biasing force in advance to
The shaft 45 is pushed to the right in FIG. 4 by the contactor 63 energized by the contactor 7 and rotates the shaft 45 while being in contact with the right end of the hole 55.

Next, as the bandsaw blade 29 cuts into the cutting length of the workpiece W, the cuff 11 gradually increases in cutting resistance. Proportionally the bullet (467 is compressed and the protrusion IA57 is hole 5
5, h will move in one direction.

Since the movement of the protrusion group 57 in the direction C) is the same as the leftward movement of the ball joint 69, the link 71 moves in the same direction C), and the lever link 77 moves at the time n1 in FIG. It swings in the rotational direction, and also swings the rotary shaft 75.

At the same time, the lifter lever 89 also swings once around the axis of the rotary shaft 75, and the slide ring 9
Raise 7.

The "1 rise" of the slide ring 97 directly matches the "1 rise" of the bearing box 101, but since the bearing box 101 is not rotated by the rotation stopper arm 107,
As a result, the linear movement of the non-rotating moving member was detected as being proportional to the increase in the cutting resistance principal component force 42.

When the band saw blade 29 passes through the maximum cutting length portion of the material W to be cut and the cutting resistance 1 component force 41 decreases, the amount of movement in the opposite direction to the above is determined by the linear movement of the non-rotating moving member () in exactly the same way. Since it can be detected, redundant explanation will be omitted.

Thus, the method and device of the present invention automatically generates a linear change linearly proportional to the change in the principal force component of the cutting resistance as the amount of linear movement of the non-rotating moving member by appropriately setting the biasing force of the bullet 69. It was detected 11 times.

The method and device of the present invention exclusively mechanically detect changes in the sufficient force for cutting resistance as linear movement of a moving member.
Since the method and device for converting it into electricity once does not cause compound interest, it is trouble-free and inexpensive, and the advantage is that the detected movement pressure can be immediately transmitted to the fluid pressure valve device for corresponding control. It also has the following.

It should be noted that without departing from the technical concept of the present invention described above, it is easy to make improvements such as, for example, expanding the movement distance of the protruding member in linear proportion.

[Brief explanation of drawings]

Fig. 1 is a front view of a horizontal bandsaw machine to explain the principle of the present invention, Fig. 2 is a diagram to explain the principal component of cutting resistance of the same horizontal bandsaw machine, Fig. 3 is an overall view of the KM of the invention, FIG. 4 is an enlarged partial sectional view showing the vicinity of the intermediate rotating body of the apparatus of the present invention, FIG. 5 is a plan view of the same intermediate rotating body, and FIG. 6 is a side view of FIG. 5. (The main part of the drawing indicates the part and explanation of the J symbol) 1... Band saw machine 21... Drive wheel 41... Cutting resistance 2-part force /I5... Shaft 51... Intermediate rotating body 5 )7...Protruding portion 67...Bullet material 75...Rotary shaft 89...Lifter lever 97...Slide ring patent Applicant AMADA Co., Ltd. Figure 1 Figure 2 Figure 5 6 Figure 106-

Claims (4)

[Claims] (1) The main component force of the cutting resistance is installed in the driving force transmission means that converts the torque of the drive motor into the lino cutting movement of the saw blade. A cutting resistance principal component force detection method characterized by detection as a change in length. (2) Cutting resistance principal component force detection according to claim 1, characterized in that the change in length of compression and extension of the balance spring described above is detected as the amount of linear movement of a non-rotating moving member. Method. (3) An intermediate rotary body that drives the saw blade without slipping is provided adjacent to the pulley in the power transmission means that moves and drives the saw blade by the torque of the drive motor, and the above-mentioned intermediate rotary body and the above-mentioned intermediate rotary body are provided on the pulley. A protruding member that abuts is planted and provided,
The above-mentioned intermediate rotating body is provided with a biasing force that is in contact with the above-mentioned protruding member and can freely adjust the torque of the electric motor and a balance spring, and further provided with a detection device that detects changes in the length of compression and extension of the above-mentioned balance spring. A cutting resistance principal component force detection device characterized by: (4) The detection amount of the above-mentioned detection device is detected by the non-rotating moving part H.
The cutting resistance principal component force detection device according to claim 3, further comprising a converting device for converting the cutting resistance into a linear displacement #J1k.