JPS6039017A - Infeed controlling method and device in cutting unit - Google Patents

Abstract

PURPOSE:To make a device perform such an efficient infeed speed as commensurate to the cutting length varied every moment in a cutting work as well as to check heavy-duty cutting that may entails damage to a tool, before it happens. CONSTITUTION:In case of a well-known horizontal band saw machine 1, pressure oil is fed to a chamber at the piston side of a lifting cylinder 7, making a piston rod 39 operate for its extension. Another pressure oil inside a chamber at the piston side of a lifting cylinder 37 is discharged therefrom, making a cutting head 5 go down with its own weight. Therefore, a proper control valve is set up in the discharge passage connected to the chamber at the piston side of the cylinder 37 and with this control valve, proper adjustment is carried out so that infeed of a saw blade 29 to a cutting work W can be properly controlled.

Description

[Detailed description of the invention]

The present invention relates to a method and device for controlling the depth of cut in a cutting device, and more specifically, in a cutting device such as a band saw, a circular saw, a machine saw, and a 6-cutting machine, the present invention is used to cut, for example, round bars and shaped steel. In doing so, it automatically implements an efficient cutting speed that corresponds to the cutting length that changes from moment to moment (the length of the cutting line where the tool contacts the cut hole), and also prevents heavy cutting that may cause tool damage. The present invention relates to a method and device for controlling the depth of cut. First, the background of the creation of the present invention will be explained with reference to FIGS. 1 and 2. The horizontal bandsaw machine 1 illustrated in FIGS. 1 and 2 is composed of a box-shaped base 3 and a cutting head 5, and the cutting head 5 swings relative to the base 3 via a horizontal hinge pin 7. It is supported by a shaft so that it can be raised and lowered. A work table 9 for placing and covering the workpiece UW is provided on the upper part of the base 3, and the workpiece table 9 has fixed jaws 11f, Φ1j, -1i111, etc. for clamping and fixing the workpiece W. The base mounting 11 provided is installation-1. The aforementioned cutting head 5 is spaced apart on both sides of the housing portion 13.1! Each housing part 13.15 is connected by a beam part tJ17 having a box 1 to a box 19 at the top thereof. Part 13.
A drive wheel 21, a driven wheel ′, ) 3 are rotatably installed inside the drive wheel 15 through respective shafts 25 and 27, and the f-driven wheel 21 and the driven wheel 23 are cutter blades. ``The endless bandsaw blade 29 is 11
That's 11 times. Therefore, by driving the C drive wheel 21 1j, the C band saw blade 29 travels while cutting the object 44W. In the cutting area where the band saw blade 20 cuts the workpiece W, the band saw blade 29 marked with ``Go'ii+'' has a tooth tip that is vertically downward due to the fixed pair 4f, the fixed id member 31, and the Φ1j guide part 33. It is guided and supported so that it faces the direction. Fixed guide part 31 and movable guide part (A33
There is a guide part 35 fixed to the beam member 17. 1 Fixed guide part (131 is nationally installed on guide part 35 and movable) f Id part 331.1 Corresponds to the size of the material to be cut W Take control freely

[It is. In addition, the above-mentioned cutting head 5 is connected to the cylinder 37 for lowering the lever 11 which is equipped with the screw I to head 39.
The swing C1 descends with the hinge bin 7 as the center. ",cormorant(
;-The action of the lifting cylinder 37 includes controlling the cutting and raising of the band saw blade 29 relative to the cut 4a and W. 1 -A'-A15 In the horizontal band saw machine 1 (cutting device) of the above-described configuration, the piston [-1 Tsudo 3
9 is an extension operation-4. In order to release the pressure oil in the piston side 3- of the piston side cylinder 37, the cutting head 5 is moved downward by the milt. Did you do it?) and V? By arranging an appropriate control valve in the discharge passage connected to the chamber on the side of the lowering sill 3 piston and adjusting the control valve appropriately, the band saw blade 29 (cutting dove) that is placed against the C1 cutter 1. The incision of the node) can be controlled appropriately. FIG. 2 shows a driving fluid pressure piping diagram. J/Home A first oil passage 41 connected to a pressure source P such as a hydraulic pump, a second oil passage 43 (also serving as an fJl outlet passage) connected to the chamber on the piston U side of the rental cylinder 37 mentioned above, and J and the third oil passage 45 connected to the chamber on the piston rond side of the cylinder 37 for rental. s. 4-Bot 3-Position Solenoid Valve S V with 12
is the placement setting. A cut control valve 47 and a filter 49 are arranged in series in the second oil passage 43.
A check valve 51 is connected in parallel to the valve. A filter 55 and a Δ filter 57 are connected in series to a branch road 53 branching from the first Ura road/11.
(!'i 7 to fy ``r''? Also branches l] Branch pipe 59.61 connects to the above-mentioned cutting control pulse 147 -C
be. Sufficient force [214 and back force FV
is shown as an arrow, and the third oil passage 45 is shown as a broken line to indicate that the cutting head 5 can be omitted in a cutting machine having a sufficiently small amount. Band saw machine 1'r with the conventional cutting machine illustrated in Figs.
6, the cutting length (J shown in FIG. 6), which is the length at which the band saw blade 29 marks the material to be cut W, changes from time to time. 1. The main component force FH and the back force FV change from time to time, but in the past, simple control methods and devices that appropriately change the speed and cutting pressure in response to these changes have not been implemented in practice. ′
It was so cool. 6- In other words, the maximum cut is made when the cutting head 5 reaches the lower end of the workpiece W near the lower end of the workpiece W at the swing angle of A (2J, the cutting length is short). Pressure 4r RoJ,
Sea urchin't + 7111 white i4 ■ action is d Lee)
'C1 always against) force 'V was balanced with the cutting pressure, and the descending speed [0] automatically became 0. Second, the cutting length sometimes changed by 11. In the case of long cutting, there is no way to proceed with the cutting efficiency within the safe range where the strength of the band saw blade 29 is kept at the maximum cutting length. fj,'
I didn't want to leave it alone and let it turn out to be a complete cut. The present invention has the following objectives:
, - Drawing (6: Detailed explanation of the preferred embodiment of Modozui C, -f. Bottom of Figure 3) shows (1) the main stand IJF of the saw machine 1;
This is a principal component force detection/conversion device 65 that detects H and converts changes in the principal component force into linear proportional movement in the vertical direction which is displayed on the slide ring 63 from time to time. This detection converter 65 is installed between the shaft 25 of the drive wheel 21 and the band saw blade drive motor (not shown).
111-! If I, slide ring 63 will rise 1! , J-REPO decreased by 1! It performs the action of ”-Note 1-. One downward displacement of the slide ring (7ζ-slide ring/6F) is changed to four downward movements of the non-rotating bearing box 67, and the needle valve 71 of the fluid pressure regulator t69 shown on one side of FIG. It is used to change the pressing force of the spring 75 that presses the spring 75, and changes the oil pressure of the branch pipe 61 after passing through the A refill 57. As a result, cutting 1; increases by one force [ As 1-1 increases, the slide ring 63 rises as shown in FIG. The force F I-1 decreases, (☆
A low AlV fluid Y1 is supplied to the conduit 01. Next, referring to FIG. 4, the above-mentioned cutting control valve 47 will be explained. The cutting control pulse 47 illustrated in FIG. 11 is the original device of the cutting control pulse 14 which controls the flow rate of IJI oil from the I arm KI cylinder 37 shown in FIG. The above-mentioned Ryuuboku left control - (Press the Jru spool 77 from the bottom): Keru pie [''tsu 1 ~ Set fluid pressure Pie 1] Tsu 1
~I'i-Setting device W181 etc., spool 77 in the above 17
Set the increase limit (maximum amount Fα of A refill described in 4 below)
It is configured by integrating a maximum opening degree setting device 79. The cutting control valve 47, the pilot fluid setting device 481, and the maximum opening degree setting device 79 are connected to the 1st valve that penetrates vertically in Fig. 4.
A main body part 87 having a through hole 83 and a second shell through hole 85, a first plate 89 covering the upper surface thereof, and a second plate 89 covering the lower surface thereof.
No. 91 and the framework, the first play 1-
Full 9 to the maximum opening setting device 7 setting guides on the top of 89
3 and pie LJ]~Setting dial 9 of pressure setting device 81
3' is the provision. Since the maximum iq vc setting device 79, pyrowa 1 to pressure setting device 81, etc. have the same structure, the C configuration of the maximum opening setting device 79 will be explained hereafter, and the pilot pressure setting device 81 will be explained.
Components with the same function are indicated by the same reference number -E)
゜1st g″i ) i'!'+ (L At one end of 83 (
, 1 Slide pusher 195 is placed in the hole, and the rod 97 hits it! 991.: J
, F, 9 +-j (there is. 101) part (1) of L sleeve 101 (Pi 1 J: l- setting device 81, the step part of the through hole 85'
It is compressed between o3 and Cdoritsu [J. No. 1-11 No. 1-89 on the top (1 + 105)
The end face cam 1 is screwed in the opposite direction, and the end face cam 109 is mounted on the rotating white I through the bear II ring 107.
The setting dial 93 marked 09 has been loosened and set to 11. Thus, by appropriately rotating the setting dial 93, the height position of the pushbutton 97 can be set arbitrarily. Next, a fitting part 111 is provided at the bottom of the first through hole 83 in the part facing the bow 1-1''l of the sleeve 101. The side slope is opened by 1 inch and is opened [].
The piston part 11 is attached to the lower end of C through the shaft part 115 in the center of C1.
7 is increasing. In addition, in the above I), the shaft portion 115 of the spool 77 is provided with two holes corresponding to the r1 height and the two holes communicating with the oil tank T (J). ~A /j'set(J
The hydraulic pressure linearly proportional to the main force led from the branch pipe 61 shown in FIG. A communication passage 119 that communicates with the second P1 through hole 85 is provided on the opposite side of the notch 111 of the three/101, and an 8'N121 groove C is provided on the outer periphery of the main body 87. Boat C is installed in 2 plays 1 to 91 with branch pipes 59 installed, and the squeeze passage 123 is connected to I'f'-(
The piston part 11 is guided to the lower surface of the piston part 117 described above, and the part 1.
= (-) corresponding to one dollar valve 125 7 is set (J 'T A6゜11 dollar valve 125 Ll)
The lower end of '(1 part 129, during which time the ammunition 131 is F [reduced C station? To cut the mill W to be cut, follow the rotation of the length W to be cut and the degree of change in the cutting length.
Then, set the pressure to 1 and set the pressure to 1 and start the CI purchase. It is equipped with a function to correct the actual value of the cutting length by changing the stop of the desired cutting speed Fσ from time to time due to L tension. Therefore, the size of the milt on cutting head 5',
<VJ cutting machine C', cutting length shortened to 1"] Tooth missing even when changing to J, sea urchin (J, etc. M J, RuT prefecture damage l)
On the other hand, the car with the cutting head 5 was in a small incision! ``Q is J to the third oil passage 45 mentioned above.
, - V7 Furikawa Schilling 37 ", Apply pressure oil on the 1st side ["] - Compensate the dead weight of the cutting head 5 as described 1.
1-[is also safe and 11-. As mentioned above, it is an autonomous action () to adjust the cutting speed! u The cutting machine τ゛ that was used in C'-C, cut the part where the cutting length was known with light cutting to prevent damage to the upper part.
・)1 Incompetent 4i's 1. By changing the f-cutting method to cutting with high efficiency, we were able to prevent downhill damage. Although the present invention has been described with reference to the band saw machine 1 that swings up and down around the hinge bin 7, the cutting head 5 is horizontally lowered 711 along the left and right guides for cutting (applicable to all geometries). "Explain": It's obvious.

[Brief explanation of the drawing]

Figure 1 shows the 4. Explanation qru (Front view of 11 verri band saw machine, Fig. 2 11 J-Hydraulic piping explanatory diagram, Fig. 3 shows a device that converts the change in 1 minute cutting force into 1 fA' linear displacement of the slide ring and fluid pressure adjustment. An explanatory diagram showing the relationship between stations, 4th F is a cross-sectional view of the cutting control valve which is the main part of the present invention, 12- Fig. 5 is a detailed view of the A-recess part of the spool, and Fig. 6 is a cutting diagram. It is an explanatory diagram showing the change in length. 11 nodes) 37・
・Lifting cylinder 47 ・Incision control valve 69 ・
...Fluid IJ-adjustment device 79...Maximum opening setting device 81...Pai 1 point pressure setting station inquiry special edition Applicant Amag Co., Ltd. Figure 1 Figure 2

Claims (4)

[Claims] (1) A flow control valve that increases or decreases the cutting speed by counteracting the fluid pressure that converts changes in the principal cutting force into fluid pressure changes with the pilot pressure that can be set to reduce the fluid pressure from the fluid pressure source. A cutting depth control method for a cutting device characterized by balancing the spool. (2) A cutting control method for the cutting device according to claim 1, characterized in that the maximum opening degree of the spool of the flow rate control valve is freely settable. (3) A spool is provided in the oil drainage path when the cutting head makes a cut, and other measures are taken to apply fluid pressure, which is a change in the principal component of cutting force, to a change in fluid pressure on the 1@ side of the spool. A cutting control device for a cutting device, characterized in that a fluid pressure from a fluid pressure source is provided on an end face as a freely settable fluid pressure. (4) The cutting control device in the cutting device according to claim 3, further comprising a spool movement limit regulating device that can freely set the maximum oil passage opening degree of the spool.