JP4338268B2 - Cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting apparatus for cutting a workpiece with a cutting machine such as a horizontal band saw.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a horizontal band saw machine as a cutting machine is provided with a cutting head provided with a band saw blade that can freely run and move up and down. A front vise device and a rear vise device that are movable in the front-rear direction are provided before and after the cutting position where the band saw blade moves up and down.
[0003]
With the above configuration, the workpiece to be cut is clamped by the rear vise device and fed forward, the desired position of the workpiece is positioned at the cutting position, the workpiece is cut by the band saw blade, and then the front vise device The product cut and processed in (1) is clamped by the front vice apparatus and is carried forward.
[0004]
[Problems to be solved by the invention]
By the way, when the workpiece is cut with the above-described conventional horizontal band saw, the remaining material remains at the end of the workpiece. The remaining material sometimes has a large amount of remaining material, and the remaining material may be wasted.
[0005]
An object of the present invention is to provide a cutting device that reduces the remaining material as much as possible when cutting a workpiece .
[0006]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems as described above, and the work (W) is clamped behind the cutting position (K) where the work (W) is cut by the cutting tool (17). A rear vise device (25) movable in the front-rear direction and a front vise device (43) capable of clamping the workpiece (W) and moving in the front-rear direction on the front side of the cutting position (K), The rear vice device (25) and the front vice device (43) are provided with position detecting means (41, 59), respectively, and rear vice forward end position detecting means (for detecting the forward end of the rear vice device (25)). 67) and a front vice back end position detecting means (77) for detecting a rear end of the front vice device (43), and a fixed vise jaw (29) provided in the rear vice device (25), movement Vice Characterized in that in the longitudinal direction of the intermediate position of the chromatography (31), and a workpiece without detecting means for detecting the remainder tail of the workpiece during retraction of said post vise assembly (25) (71A, 71B) It is what.
[0007]
In the cutting apparatus, the distance from the cutting position (K) to the rear vice device (25) when the workpiece absence detecting means (71A, 71B) is turned on and the rear vice device (25) is stopped. According to the current value of a certain rear vice device (25), the default value of the no-work detection means (71A, 71B) for the rear vice device (25), and the default value of the gripping margin of the rear vice device (25) An arithmetic device (93) for calculating the tail end storage position of the remaining material is provided .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
Referring to FIGS. 1, 2 and 3, for example, a horizontal band saw machine 1 as a cutting machine includes a work table 3 on which a work W of various shapes is placed on a base 5. 5, a main post 7 is erected on the right side in FIG. 3, and a sub post 9 is erected on the left side in FIG. A cutting head 11 which is guided by the main post 7 and the sub post 9 and is movable up and down is provided.
[0013]
A drive wheel 13 that is rotatable by a saw blade drive motor M (see FIG. 1) is provided on the right side of the cutting head 11, and a rotatable driven wheel 15 is provided on the left side of the cutting head 11. Yes. A band saw blade 17 as a cutting tool is wound around the drive wheel 13 and the driven wheel 15. The cutting head 11 is provided with a fixed saw blade guide member 19 that guides the traveling of the band saw blade 17 and a movable saw blade guide member 21 that is movable toward and away from the fixed saw blade guide member 19.
[0014]
The work table 3 is provided with a plurality of feeding rollers 23 that can be rotated at appropriate intervals in the vertical direction in FIG. A rear vice device 25 is provided on the upper side of the cutting position K where the band saw blade 17 moves up and down on the base 5 in FIG. The rear vice device 25 is provided on the left side of the rear vise base 27, which is movable in the front-rear direction, the fixed vice jaw 29 provided on the right side of the rear vice base 27 in FIG. And a moving vise jaw 31. In addition, the rear vise base 27 is attached to the tip of a piston rod 35 attached to a cylinder 33 as an example of a moving drive device fixed to the base 5. Will be moved. The moving vise jaw 31 is attached to the tip of a piston rod 39 attached to the cylinder 37 fixed to the base 5, and is moved toward and away from the fixed vise jaw 29 by the operation of the cylinder 37. Become. The amount of movement of the rear vise base 27 is detected by an encoder 41 as an example of position detecting means.
[0015]
A front vise device 43 is provided on the base 5 so as to be movable in the vertical direction in the front-rear direction of FIG. 1 below the cutting position K where the band saw blade 17 moves up and down. The front vise device 43 is provided on the left side in FIG. 1 of the front vise base 45, the front vise base 45 movable in the front-rear direction, the fixed vise jaw 47 provided on the right side of the front vise base 45 in FIG. And a moving vise jaw 49. In addition, the rear vise base 45 is attached to the tip of a piston rod 53 attached to a cylinder 51 as an example of a moving drive device fixed to the base 5. Will be moved. The moving vise jaw 49 is attached to the tip of a piston rod 57 mounted on the cylinder 55 fixed to the base 5, and is moved toward and away from the fixed vise jaw 47 by the operation of the cylinder 55. Become. The amount of movement of the front vise base 45 is detected by an encoder 59 as an example of position detecting means.
[0016]
A control device 61 is provided below the right side of the base 5 in FIG. Further, a rapid lowering detection device 63 and a bending detection device 65 for detecting the position when the band saw blade 17 is rapidly lowered are provided inside the lower portions of the fixed saw blade guide member 19 and the movable saw blade guide member 21, respectively. It has been.
[0017]
As shown in FIG. 1, the rear vice device 25 side is provided with a rear vice forward end position limit switch 67 as an example of a rear vice forward end position detecting means for detecting the forward end of the rear vice device 25. In addition, a rear vice operation limit limit switch 69 is provided in the vicinity of the upper side in FIG. Further, in the vicinity of the lower side in FIG. 1 of the rear vice forward end position limit switch 67, there is a relative relationship between a light emitting side work absence detection photoelectric sensor 71B and a light receiving side work absence detection photoelectric sensor 71B as a work absence detection means. It is provided for. Further, a rear vise clamp confirmation pressure switch 73 and a front vise clamp confirmation pressure switch 75 are provided on the left side in FIG.
[0018]
As shown in FIG. 1, the front vice device 43 is provided with a front vice / reverse end position limit switch 77 as an example of a front vice / reverse end position detecting means for detecting the reverse end of the front vice device 43. In addition, a front vice operation limit limit switch 79 is provided in the vicinity of the lower side in FIG. Further, in the vicinity of the upper side in FIG. 1 of the front vice forward end position limit switch 77, a light projecting side work front end detecting photoelectric sensor 81A and a light receiving side work absence detecting photoelectric sensor 81B are opposed to each other as a work front end detecting means. Is provided. Further, a front vise wide opening limit switch 83 is provided on the moving vise jaw 47 side of the front vice device 43, that is, on the left side in FIG.
[0019]
FIG. 4 shows a configuration block diagram of the control device 61. That is, in FIG. 4 , a CPU 85 is provided, and an input device 87 such as a keyboard and an output device 89 such as a CRT are connected to the CPU 85. The CPU 85 is connected to a memory 91 for storing various data and an arithmetic processing unit 93 for performing arithmetic processing.
[0020]
Further, the CPU 85 includes the encoders 41 and 59, the rear vice forward end detection limit switch 67, the workless light quantity sensors 71A and 71B, the front vice rearward end detection limit switch 77, the work front end detection light quantity sensors 81A and 81B, and the front vise large. An opening limit switch 83 is connected at least.
[0021]
With the above configuration, a cutting method will be described with reference to FIGS.
[0022]
First, as shown in FIG. 5 (A), the tip of the workpiece W to be cut is protruded from the tips of the fixed vise jaw 29 and the moving vise jaw 31 of the rear vice device 25 by 250 mm or more, for example, and the fixed vise jaw 29 And the moving vise jaw 31. At this time, the rear vise clamp confirmation pressure switch 73 is turned ON. Next, after the start button is turned on in FIG. 5B, the cutting head 11 is raised. After the vise interference limit switch is turned off, when the moving vise jaw 49 of the front vice device 43 is opened wide, the front vise large open limit switch 83 is turned on. When the front vice device 43 is moved backward (moved toward the band saw blade 17 side) in FIG. 5C, the front vise / reverse end detection limit switch 77 is turned ON.
[0023]
As shown in FIG. 6 (A), the rear vise assembly 25 when allowed to fast forward, light projecting side workpiece tip detection light amount sensor 81A, the light between the light-receiving-side workpiece tip detection light amount sensor 81B at the distal end of the workpiece W When blocked, the rear vice apparatus 25 is stopped. When allowed to medium speed retracted rear vise assembly 25 in FIG. 6 (B), the light projection-side workpiece tip detection light amount sensor 81A, the leading end of the workpiece W between the light-receiving-side workpiece tip detection light amount sensor 81B is pass backwards, The rear vice apparatus 25 is stopped. When the rear vise assembly 25 allowed to slow progress in FIG. 6 (B), the light projection-side workpiece tip detection light amount sensor 81A, light between the light-receiving-side workpiece tip detection light amount sensor 81B is by blocking the distal end of the workpiece W, the rear vise assembly 25 is stopped and the tip detection of the workpiece W is completed. The distance between the band saw blade 17 and the light emitting side workpiece tip detection light amount sensor 81A and the light receiving side workpiece tip detection light amount sensor 81B is set to a default value of 190 as a parameter, for example.
[0024]
As shown in FIG. 7A, positioning is started to the cutting position. If positioning is incomplete, the process proceeds to FIG. 7 (B) for frequency feed, and if positioning is complete, the process proceeds to FIG. 7 (C). That is, when the positioning is incomplete, the work W is clamped by the front vise device 43 in FIG. 7B, and after the front vise clamp confirmation pressure switch 75 is turned ON, the rear vise device 25 is opened (timer) and necessary. Retract long (high speed → medium speed → low speed). When the positioning is completed, the work W is clamped by the rear vice device 25 in FIG. 7C, and after the rear vise clamp confirmation pressure switch 73 is turned ON, the front vise device 43 is opened (timer). Then, the rear vice apparatus 25 is moved forward, the rear vice advance end detection limit switch 67 is turned on, and positioning is completed. At this time, the distance between the tip of the rear vice device 25 and the band saw blade 17 is set to 50 mm, for example.
[0025]
As shown in FIG. 8A, when the work W is clamped by the front vice device 43 and the front vise clamp confirmation pressure switch 75 is turned on, cutting is started. In FIG. 8B, after cutting is started, the rear vice device 25 is opened, the rear vice device 25 is retracted by a necessary length, the workpiece W is clamped by the rear vice device 25, and the rear vise clamp confirmation pressure switch 73 is turned on. Then, the rear vice apparatus 25 is stopped. During cutting, both vice clamps and the rear vice device retract end are waiting. In FIG. 8C, after the end of cutting, the cutting head 11 is raised, the rapid descent detecting device 63 is turned off, and it rises after T seconds and stops. Moreover, the front vice device 43 is opened.
[0026]
As shown in FIG. 9, the rear vice apparatus 25 is advanced, the rear vice advance end detection limit switch 67 is turned on, positioning is completed, and the process returns to FIG.
[0027]
As shown in FIG. 10, after the cutting process is started, the rear vice device 25 is opened, and while the rear vice device 25 is retracted by a necessary length, the light-projecting-side workpiece absence detection light amount sensor 71 </ b> A, the light-receiving-side workpiece absence detection light amount. light stores the tail end of the remaining material at that passing light into the memory 91 of the controller 61 in the sensor 71B. The rear vice device 25 cannot be retracted at the current value of the rear vice device 25 = the tail end storage position of the remaining material. (Remaining material tail end storage position) = (current position of rear vise device 25 when light-receiving-side workpiece-free detection light amount sensor 71A and light-receiving-side workpiece-less detection light amount sensor 71B transmit light) + (no light-projecting side workpiece) The position of the detected light amount sensor 71A and the light receiving side workpiece-less detected light amount sensor 71B (default value: 490)) − (the gripping amount of the rear vice apparatus 25 (default value: 65)).
[0028]
As shown in FIG. 11A, after the cutting is completed, the cutting head 11 is raised, the rear vice device 25 is advanced, and the rear vice advance end detection limit switch 67 is turned on. In FIG. 11B, when the workpiece V is clamped by the front vice device 43 and the front vise clamp confirmation pressure switch 75 is turned ON, the rear vise device 25 opens. Then, the front vice device 43 is advanced by a necessary length to start cutting. In FIG. 11 (C), when positioning the product, if the storage position of the tail end of the remaining material exceeds the band saw blade 1, an alarm is generated and the entire material stops due to an insufficient remaining material error.
[0029]
Thus, when the workpiece is cut, the remaining material can be reduced as compared with the prior art.
[0030]
In addition, this invention is not limited to embodiment of invention mentioned above, It can implement in another aspect by making an appropriate change.
[0031]
【The invention's effect】
As will be understood from the description of the embodiments of the above such as, according to the present invention, the have line cutting a workpiece with the cutting tool, in retreat the rear vise assembly rearwardly, no work detecting means ON When it does, it detects the trailing edge of the remaining workpiece and stops. Thereafter, the work is clamped, the rear vice apparatus is advanced, and the rear vice advance end position detecting means detects the rear vise advance end position. Next, the workpiece can be clamped by the front vice device and fed forward, and the tail end of the remaining workpiece can be positioned at the cutting position for cutting.
[0033]
Thus, when the workpiece is cut, the remaining material can be reduced as compared with the prior art.
[Brief description of the drawings]
FIG. 1 is a plan view of a horizontal band saw machine as a cutting machine of the present invention.
FIG. 2 is an enlarged view of FIG.
3 is a front view in FIG. 1. FIG.
FIG. 4 is a configuration block diagram of a control device.
FIG. 5 is an operation explanatory view of a cutting method.
FIG. 6 is an operation explanatory view of a cutting method.
FIG. 7 is an operation explanatory diagram of the cutting method. FIG. 8 is an operation explanatory diagram of the cutting method.
FIG. 9 is an operation explanatory view of a cutting method.
FIG. 10 is an operation explanatory view of a cutting method.
FIG. 11 is an explanatory diagram of the operation of the cutting method.
[Explanation of symbols]
1 Horizontal band saw machine (cutting machine)
11 Cutting head 17 Band saw blade 25 Rear vise device 27 Rear vise base 29 Fixed vise jaw 31 Moving vise jaw 33 Cylinder (moving drive device)
41 Encoder (position detection means)
43 front vise device 45 front vise base 47 fixed vise jaw 49 moving vise jaw 51 cylinder (moving drive device)
59 cylinder (moving drive)
61 Control Device 67 Rear Vise Advance End Detection Limit Switch (Rear Vise Advance End Position Detection Means)
69 Rear Vise Operation Limit Limit Switch 71A Light Emission Side Work-Free Photoelectric Sensor (Work-No Work Detection Means)
71B Light-receiving side work-less photoelectric sensor (work-less detection means)
73 Rear vise clamp confirmation pressure switch 75 Front vice clamp confirmation pressure switch 77 Front vise reverse end detection limit switch (front vice advance end position detecting means)
79 Front vise operation limit switch 81A Light emitting side workpiece tip detection light quantity sensor (work tip detection means)
81B Light receiving side workpiece tip detection light quantity sensor (work tip detection means)
83 Front vise large opening limit switch 87 Memory 89 Arithmetic unit

Claims (2)

A rear vise device (25) capable of moving the workpiece (W) in the front-rear direction by clamping the workpiece (W) is provided on the rear side of the cutting position (K) where the workpiece (W) is cut by the cutting tool (17). A front vise device (43) that can clamp and move the workpiece (W) in the front-rear direction is provided on the front side of the position (K), and each of the rear vice device (25) and the front vice device (43) has position detection means. (41, 59) and a rear vice advance end position detecting means (67) for detecting the advance end of the rear vice device (25) and a rear end of the front vice device (43). The rear vice device (77) is provided at a middle position in the front-rear direction of the fixed vise jaw (29) and the movable vise jaw (31) provided in the rear vice device (25). 2 ) Cutting apparatus characterized by comprising a workpiece without detecting means for detecting the remainder tail of the workpiece (71A, 71B) during retraction of. In the cutting device according to claim 1, from the cutting position (K) to the rear vice device (25) when the workpiece absence detecting means (71A, 71B) is turned on and the rear vice device (25) is stopped. Current value of the rear vice device (25), the default value of the no-work detection means (71A, 71B) for the rear vice device (25), and the default of the gripping margin of the rear vice device (25) A cutting apparatus comprising a computing device (93) for computing the tail end storage position of the remaining material based on the value .

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