JPS6099513A - Method of adjusting cutting blade for numerical control typedisk-cutter and numerical control type disk-cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a numerically controlled disc cutter used particularly for longitudinal cutting of long thin plates or webs of metal or plastic, which comprises a main body, an upper cutting blade device and The invention relates to lower cutting blade devices, including devices for using these cutting devices and devices for adjusting these cutting devices.

DESCRIPTION OF THE PREFERRED EMBODIMENTS, PRIOR ART AND PROBLEMS SOLVED BY THE INVENTION In known disc cutter configurations, when the width of the web is changed, readjustment of the series of disc blades is required, which causes the cutter blades to move relative to each other. This was achieved by changing the spacing between the blades or by using so-called interchangeable blades, ie the blades were attached to a collar of the same length as the width of the cutter.

By using two or more pairs of collars and blades, a series of replacement blades can be preadjusted to a new web width external to the cutter. When a new web width is required in the cutter, the already adjusted series of reversing blades are replaced in the cutter. It is also mentioned how the entire cutter can be converted into another cutter whose series of blades has been preconditioned. From German Patent No. 21'38 476 a numerically controlled cutter is also known in which the upper and lower blades are mounted on a common body and the cutting width is varied by adjusting the spacing between the cutting devices. Although this cutter is suitable for accurately cutting the width dimension of already cut sheets, it is not suitable for cutting webs. A method of adjusting a cutter and its cutting element, whereby adjustment can be made more reliably and more quickly than previously by using equipment whose cost is significantly lower than that of American equipment. The goal is to provide the following. This ensures that the cutting device is held precisely in place, independently of each other, first by means of a numerically controlled conveying device and then by means of an essentially play-free conveying element relative to the measuring slide. This was achieved according to the method of the invention, characterized in that:

Since the measuring slide is independent of the conveying device of the cutting device, the method according to the invention preferably includes an adjustment control of the blade position exerted by the measuring slide. Since they can be adjusted independently, preferably the upper and lower cutting devices are vertically spaced apart from each other during the adjustment, so that the forkling system of the upper and lower cutting devices can also be changed.

The object of the invention is also a numerically controlled disc cutter to which the adjustment method according to the invention can be applied, the adjustment device comprising a conveying device attached to the body for the upper and lower cutting devices and a cutting device. a clutch included in the body and coupled to the conveying device by which the cutting device follows their position; a conveying element coupled to said body; and arranged to be moved essentially without play by said element. a measuring slide on which a sensor responsive to the cutting device is arranged, and a pulse sensor coupled to the second conveying element for capturing the position of the measuring slide. The goal is to provide products with the following characteristics.

The adjusting device preferably further includes a device for raising the lower cutting device or lowering the lower cutting device. This is preferably achieved by a hydraulic cylinder which can be returned by the force of a spring and which holds the lower cutting device in the lower position when not pressurized.

In the following, the disc cutter and its adjustment method according to the invention will be explained in more detail with reference to the accompanying drawings.

2. Embodiment FIG. 1 shows a cross-section of a disc cutter according to the invention viewed from the intended direction of web feed. and a lower cutting device 2. The lower cutting device 1 has a movable main body 4.
It is located on a sliding rod 3 connected to. Movable body 4
can be moved vertically by means of the threads of the handle 5, shaft 6, helical gear 7 and collar nut 8 to adjust the vertical blade spacing.

The lower cutting devices 1 are essentially the same as each other and have a ring-shaped cutting blade 9 and a plow 10 to which the blade 9 is attached. The cutting device 10 is mounted on a protruding shaft 11 attached to the body 12. A coupling device of the lower cutting device 12 is also coupled to the body 12, which coupling device connects the carrying screw 14 of the lower cutting device 12. It includes a connector 13 for gripping the lower cutting device 1 and a locking element 15 for locking it to the slide bar 3. The connector 13 is of the type conventionally used in the industry. , comprises connector halves 16, 17 and a hydraulic cylinder 18 which is retractable by spring force.The hydraulic cylinder 18 presses these hand parts 16° 1T against each other and against the conveying screw 14.Connector halves A screw (not shown) is arranged between 16 and 17 to keep the connector halves separated from each other when the hydraulic cylinder 18 is not pressurized.Locking element 1
5 includes a brake component 20 made of brass, for example, and a hydraulic cylinder 19 that is hydraulically operated.
When pressurized, it presses against the sliding rod 3 and locks the cutting device in place.

The lower cutting devices 2, which are essentially identical to each other, are arranged on a slide bar 22 that is fixedly connected to the body 21 of the disc cutter. As is clear from FIG. 8, the lower cutting device 2 has a ring-shaped cutting blade 23 and a shovel 24 to which the blade is attached. The shovel 24 is mounted on a protruding shaft 25 attached to the body 26 of the lower cutting device. A coupling device similar to that in the lower cutting device 1 is coupled to the main body 26, which coupling device has a connector 28 for firmly gripping the carrying screw 27 and a locking element 32 for locking against the slide bar 22. include. Connector 28 has connector halves 29, 30 and 1
．． It has hydraulic cylinders 31 which are resettable by spring force and press against the hand parts 29, 30' and against each other and against the conveying screw 27, and when the cylinders 31 are not pressurized. 5, a spring (not shown) keeps the connector halves separated from each other. The locking element 32 has a hydraulic cylinder 33 and a brake component 34 . Furthermore, a hydraulic cylinder, which can be returned by spring force, is connected to the body 26 of the lower cutting device 2 for lifting it into the cutting position.

The body 26 thus slides along slide bars 37 formed between the sides of the body and the body portion 36.

A conveying screw is used as a conveying device for the upper and lower cutting devices in the embodiment shown in the accompanying drawings. The thread shape of the conveying screw can vary. For example, an M-shaped thread or a round thread may be used, but trapezoidal threads are probably the most economical due to their availability on the market. Belts, flat belts, conical belts, chains, cylinders or manual conveyance of the cutting device can be used.

In the embodiment shown in FIG.
, 2 carrying screws 14, 27 are mounted on the main body, and they are connected to the pair of bevel gears 38, 39 and the shaft 4 of the motor 41.
0. A pulse sensor 42 is attached to the end of the carrying screw 27 to track the rotation of the carrying screw.

The cutting blade 9 of the earth cutting device 1 is used by a toothed belt pulley 43 fixed to the peg 10, a toothed belt wheel 49 mounted on the main body of the cutting device, and a toothed belt 45. The toothed belt pulley 49 is connected to a splined shaft 47, which is connected to the motor 50 via its extension and a conventional link T9.

In a manner consistent with one of the soil cutting devices, the lower cutting device 2 has a toothed belt wheel 44 fixed to the cutting blade shear 24.
, a toothed belt 46°, and a toothed belt pulley 51 mounted on the main body of the cutting device. The toothed belt pulley 51 is connected to a spline shaft 48 , and the spline shaft 48 is connected to a motor 50 via an extension of the spline shaft 47 and a pair of toothed belt pulleys 52 . motor 5
0 and the extension of the spline shaft 4T, a gear box 53 is further arranged, and clutches (not shown) are located on both sides of the gear box 53.

The splined shafts 47, 48 are identical to the conveying screws 27 (which are mounted on the body 21 of the disc cutter). , the movable body 4 is arranged in the body 21 by the helical gear 7. When viewed from the feeding direction, as shown in FIG. 2 and FIG. Located in front of the disc cutter, the measuring slide 54 is connected to the body 55
and sensors 56a+56'b arranged on springs 55' for the upper and lower cutting devices (FIG. 5). The body 55 is supported on the disc cutter body 21 by sliding rods 57, 58. The measuring slide 54 is moved on the slide rods 57, 58 by means of an essentially play-free conveying element, for example a ball screw nut combination. The ball screw nut combination device comprises a ball screw 60 supported by bearings 58', 59 in the body of the disc cutter, and a nut arranged for essentially play-free movement by said screw 60 on a measuring slide. 61.

A motor 63 is connected to one end of the screw 60 via a clutch 62.
are combined. Motor 63 drives screw 60 through a step down gear (not shown). A pulse sensor is coupled to the other end of the screw 60, and the screw 600
The position of the measurement slide 54 is tracked based on the rotation. An essentially play-free transport of the measuring slide 540 can also be achieved by means of a toothed rod/cog gear combination. In this device, a cogwheel, its drive motor and a measuring slide connected thereto move on a toothed rod. Such conveyance can also be achieved by means of two toothed belt wheels and a toothed belt, in which case the measuring slide is connected to the toothed belt.

1 and 2 (as is clear from FIGS. 1 and 2), in the present disc cutter there are two areas in which the working area or the cutting device can act as a machine (an area in which it can occupy a position) and a storage area or magazine for the cutting device (a first In the figure and FIG. 2, the right side) is distinguished.

The starting position for operation of the disc cutter is obtained by locating the cutting devices 1, 2 in the magazine at the point of the corresponding limit connector 65, 66 (FIGS. 4 and 6). The measuring slide 54 is connected to the limit connector 67 (
2) within the active area. The connector 28 of the lower cutting device 2 is opened, the locking element 32 is closed and the lower cutting device 2 is in their lower position. Correspondingly, the connector 13 of the lower cutting device 1 is opened and the locking element 15 is closed.

The measuring action of the measuring slide is based on the fact that all cutting blades are sharpened with equal width at their edges as the measuring part 68° 69 of the blade on the blade body (Fig. 4 and Figure 5).

Adjustment of the cutting device can be realized in two different ways so that the edges of the cutting blade can both function as cutting edges.

Furthermore, the adjustment of the cutting device is always such that the edges of each web to be cut are cut in the same direction, so that no straightening of the web edges is required and the webs are received from the machine at the same height. Ru.

When adjusting the cutting device, the measuring slide 54 is moved by means of a four-gear screw 60 and a servo motor 63 to a point at the reference measure part 70. The standard measure part 7
0 is a rather long vertical bar that functions as a part of the reference measure for the sensors 56a and 561). Since one part of the reference measure is common, angular errors that may occur in the sensors 56a and 561) may also be taken into consideration. A position counter (not shown) on the measuring slide is zeroed at this point.

The absolute position of the cutting edge of the blade is determined when the desired width of the web is 111
12...15. The lateral blade space of the cutting blade is 1, the space between one part of the reference measure and the zero line, that is, the green of the web to be cut, is 1φ, and the sensor 56
When the possible angular error of a and 56b is K, and the blade arrangement is given a number from 1 to 5 and the sub-symbol Y is used for the upper plate and the sub-symbol A is used for the lower blade, the blade arrangement is according to FIG. 9, it can be calculated by the following equations: 11Y-1φ+11 1t 1xA=1φ+11+12Y = IIA + 12 1t 12A = 11Y + 12 + 1t.

lX1Y = 12Y + 13 1t13A = 1
2A + 13 + 1t.

14A = 13A + 14 1t 14Y "" 13Y + 14 + 1t1ay -
14Y + 151t 15A = 14A + 15 + 1t.

Next, the measuring slide 54 is moved to the absolute position of each blade. The desired cutting device is then connected to the pulse sensor 4
Based on the number of pulses given by 2, it is rapidly and schematically transferred into position by the conveying screw 14 or 27 depending on whether it is a lower cutting device or a lower cutting device. When the cutting device is thus placed generally in place and preferably within the measuring area of the sensors of the measuring slide comprising one true measuring sensor and two proximity sensors, the cutting The device is carried by means of a carrying screw 14 or 2T.
It is further moved precisely to its right position with respect to the measuring sensor with a slower speed. Measuring sensor 56 of the measuring slide
a and 56b are preferably inductive sensors by which a very high repeatability of 8 degrees is achieved in the accuracy of measurement. As can be seen from FIG. Rub it mechanically.

In this way all desired cutting devices are moved to the desired position and additional cutting devices remain in the storage area for their limit connectors. Limit sensor 71 (Figure 2)
prevents the transfer of the measuring slide from exceeding the cutting area.

When all desired cutting devices are in place, their position can, if desired, be controlled by the measuring slide as follows: the measuring slide is moved to the point of the reference measure part TO, and The position counter is returned to zero. A green tint corresponding to the cutting edge of each blade of the measuring part is detected by the measuring slide and the output of the position counter is compared with the calculated absolute value. A small error tolerance may be allowed here, but in other cases the adjustment of the cutting device in question is corrected.

Based on FIG. 10 (in the second cutting device, unlike the cutting device in FIG. 9, the left side of the first upper blade cuts,
The blade is therefore worn equally on both edges.

When all blades are aligned in place and within tolerances, the measuring slide can be transferred to the right end of the storage area and the lower blade can be lifted. After this, the true disconnection can begin.

Spring adjustment of the measuring sensor 56a'+56b and the resulting short distance between the measuring part and the measuring sensor (0-1 mm)
and because of the use of an inductive sensor, a repeatability of 0.001 mm is achieved in the measurements. The same precision can also be achieved by using a magnetic sensor. (The cutting device can then be positioned with essentially the same precision with respect to the probe's sensors.

0.05III+1 when adjusting the upper and lower cutting devices
It can be estimated to yield an accuracy of 1. The precision obtained essentially depends on how precisely the measuring part of the cutting device is installed at the point on the blade.

As an example, the measuring slide 54 may be carried by a play-free ball screw 60 with a rise of 5.0 mm and a diameter of 2 mm.
A system produced by a 5.0 mm one is considered. The screw 60 is rotated by a DC motor 63 at a maximum speed of 600 rpm. A pulse sensor 6T is attached to the shaft of the motor 63 and generates a 500 D pulse every rotation. , measurement resolution is O-001l
lIm, and its repeatability precision is O-
When a measuring sensor of 001 mm is used, the cutting device can be adjusted with a precision of (1,(105 mm+).

When the drive motor 41 of the shaft 40 and the conveying screws 14, 27 of the cutting devices 1, 2 is a servo motor whose maximum rotational speed is 600 Orpm and the gear ratio of the pair of paddle gears is 3:1, the conveying screw The maximum rotation speed of 14 and 27 is 10
00 rpm. A pulse sensor 42 at the end of the carrying screw 27 generates 50 pulses per revolution and the rise of the carrying screws 14, 27 is 5. When on, the measurement resolution is between 0.1. This limits the accuracy of the approximate adjustment of the cutting device to the limit of the measurement accuracy of the pulse sensor.
Sum of 5 or alternatively 66 recognition distances, 2 to 6 mnX'
to sing.

From these approximate positions, the cutting device detects the sensor 56a, the adjustment precision of which is about 0.005 m+.

56b.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a disc cutter based on the present invention as seen from the direction in which the sheet is fed; FIG. The figures are a cross-sectional view of a disk cutter according to the invention along 1-is of FIG. 2; FIG. is a sectional view taken along the v-v line in Fig. 4; Fig. 6 is a cross-sectional view taken along the line v-v in Fig.
- A sectional view taken along line Vl; FIG. 7 is a diagram showing a soil cutting device of a disc cutter based on the present invention; FIG. 8 is a diagram showing a lower cutting device of a disc cutter based on the present invention; FIG. 9
The figures show one way of arranging the cutting device of a disc cutter. FIG. 10 is a drawing showing another way of arranging the cutting device of a disc cutter. On the drawing, 1 is the "soil cutting device"; 2 is the "bottom cutting device 3,
22 is 4 for the sliding rod, 21 is the body; 13 is 14 for the connector, 15 is for the carrying screw, 32 is 1B for the locking element, 9 is for the hydraulic cylinder, 23 is for the cutting blade. ”; 11.25 is “Axis” 728 is “Connector J
; 47° 48 is "spline shaft"; 50 is "motor"; 52 is "toothed belt wheel"; 53 is "gear box"; 54
is "measurement slide"; 42 is "pulse sensor"; 56a
1 56b is a "sensor"; 60 is a "screw"; 64 is a "sensor" and near 9 is a "link". Agent Asamura - Written amendment to the procedure (method) Tsunotsu 6, Showa Ota, Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Showa J De 2006 Patent Application No. 11. bro 77 No. 3, Relationship with the case of the person making the amendment Patent applicant 4, Agent 5, Amendment order issued by Daily Noah Month QZ day 6, Number of inventions increased by amendment 7, Subject of amendment

Claims (9)

[Claims] (1) A numerically controlled disc cutter especially adapted for longitudinal cutting of long thin plates of metal or plastic, comprising a main body (4, 21), an upper cutting blade device (
1) as well as the lower cutting blade device (2), means for using these cutting devices (47,4"8,50,52,5
3. '79) and means (14, 27° 54, 60) for adjusting these cutting devices; 5, arranged schematically and independently of each other:
Numerically controlled display, characterized in that, after the rough adjustment, the cutting device is precisely adjusted essentially without play by means of a conveying element (60) with respect to a measuring slide (54) that is numerically guided into position. )・How to adjust the cutting blade of the cutter. (2) A method according to claim 1, characterized in that the fine adjustment comprises a grade position control effected by the measuring slide (54), the cutting blade of a numerically controlled disc cutter. Method. (3) In the method according to claim 1, the transportation of the ZoV-do in the bimodal density control is carried out by the transportation means (14
, 27). (4) In a method as claimed in any one of claims 1 to 6: during said adjustment, the upper and lower cutting devices (1, 2) are vertically spaced apart from each other. A method for adjusting the cutting grade of a numerically controlled disc cutter, characterized in that the disc cutter is moved by (5) A numerically controlled disc cutter especially used for longitudinal cutting of long thin sheets of metal or plastic, including the main body (4, 21), the upper cutting blade device (1) and the lower cutting blade device (2), for cutting these. Means for using the devices (47, 48° 50.52, 53.79) and means for adjusting them (14, 27, 54, 6)
0), the adjustment means comprising upper and lower cutting devices (1, 2).
) attached to the main body for transporting equipment (14°2
7) and a clutch (13, 15, 28, 32) included in the cutting device (1, 2), by which the cutting device is coupled to the conveying device (14, 27) and the main body. and a pulse sensor coupled to the first conveying device for tracking the position of the cutting device (1, 2), wherein the adjustment means further comprises a conveying element (60) coupled to the body. ), a measuring slide (54) arranged to be moved essentially without play with respect to the conveying element (60), on which a sensor (56e, 56b) responsive to the cutting device is arranged. a second pulse sensor (64) coupled to the conveying element (60) for tracking the position of the measurement slide (54);
A numerically controlled disc cutter comprising: (6) In the disc cutter according to claim 5, the adjustment means further includes a device (35) for raising the soil cutting device or lowering the lower cutting device during adjustment.
A numerically controlled disc cutter comprising: (7) In the disc cutter according to claim 5: a sensor (56a, 5
A numerically controlled disc cutter characterized in that 6b) is an induction sensor. (8) A numerically controlled disc cutter according to claim 5, characterized in that the sensor that responds to the device is a sensor. (9) What about the disc cutter described in claim 5? said conveying element (60) with essentially no play;
A numerically controlled disc cutter characterized by a pole screw. tIG4! - A disc cutter according to claim 6, characterized in that the device for raising the lower cutting device from its lowered position to its working position is constituted by a hydraulic cylinder (35) which can be returned by the force of a spring. Characteristic numerically controlled disc cutter.