JP2007105855A - Clamping device for cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamping device for a cutting device for preventing a cut object from carelessly moving at the time of cutting by surely clamping the cut object, when a long cut object with an uneven cross sectional shape, especially a chemical shell is mechanically cut by a round-saw cutting device into an appropriate size. <P>SOLUTION: A workpiece W is put on a platform 32a of a trestle 32, and is brought into contact with a holding face 33a of a receiving plate 33. Under this condition, a hydraulic cylinder 35 is actuated, and a pressurizing part 34 mounted to the tip of a piston rod 36 is pressed to the workpiece W, so that the workpiece W is pressed to the platform 32a and the holding face 33a. A pressurizing face 34a of the pressurizing part 34 is inclined relative to a moving direction of the pressurizing part 34. A straight line passing through a contact point of the pressurizing face 34a and the cut object W and orthogonal to the pressurizing face 34a is passed through an intermediate of the contact points of the cut object W, the platform 32a and the holding face 33a, so that the cut object W is pressurized by the platform 32a and the holding face 33a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a clamping device for holding and fixing a workpiece when mechanically cutting the workpiece to be cut, particularly when the cross-sectional shape of the workpiece changes depending on the position in the axial direction. It is related with the clamp apparatus for cutting devices which enabled it to hold | maintain and fix a workpiece | work even if it is a position.

  For example, when a long round bar is mechanically cut to an appropriate length, a rotating circular saw is moved forward and backward with respect to the round bar, cut with a saw blade when moving forward, and moved backward to move the round bar to its axis. The next cutting position is positioned in the moving area of the circular saw by moving in the direction, and continuous cutting is performed. When cutting, the workpiece is held and fixed by the clamp device so that the workpiece, which is a workpiece, does not move carelessly.

  FIG. 8 and FIG. 9 explain the schematic structure of the swing arm type circular saw cutting machine 1 that cuts a solid round bar as the workpiece W. FIG. 8 shows a plan view and FIG. 9 shows a front view. ing. The workpiece W is cut by moving the rotating circular saw 2 from the initial position indicated by the solid line in FIG. 9 to the cutting completion position indicated by the imaginary line, thereby moving the workpiece W forward and backward. Since it is inconvenient if the workpiece W moves carelessly from the circular saw reference position S at the time of cutting, the workpiece W is securely held by the clamping means 3 and 4 that are directly connected to the hydraulic cylinders that advance and retract in the horizontal and vertical directions. It is fixed by being clamped. The auxiliary clamping means 3a is capable of reciprocating in the direction indicated by the upper arrow P in FIG. 8 for the constant-length feeding operation of the workpiece W, and the direction of the circular saw reference position S with the workpiece W clamped. The workpiece W is sent to the cutting position, moved in the direction opposite to the circular saw reference position S in the opened state, and then the workpiece W is pressed again. The clamping means 4 clamps the workpiece W during cutting.

  If the cross-sectional shape is uniform at any position, such as a round bar or a shaped steel, it is easy to press the workpiece W with the clamping means 3 and 4. However, it is difficult for the workpiece W having a non-uniform cross-sectional shape to be securely clamped at any position by the clamping means 3 and 4.

  By the way, as a work with a non-uniform cross-sectional shape, there is an abandoned chemical bomb that the former Japanese army buried in China and abandoned. Japan is obligated to detoxify and dispose of this abandoned chemical shell based on the Chemical Weapons Convention. Detoxification / disposal treatment of chemical cannonballs involves high-temperature heat pyrolysis in a combustion furnace, but for efficient pyrolysis treatment, the chemical cannonballs should be sized appropriately for pyrolyzing the contained chemical agent. Need to cut. This abandoned chemical cannonball may explode as it is still filled, so it was said that mechanical cutting could not be performed. However, in recent years, it is technically necessary to reliably remove the filled glaze. As a result, the mechanical cutting process was reviewed, and the adoption of cutting processing by a cutting machine was promoted. When the abandoned chemical shell is mechanically cut, the cross-sectional shape is not uniform, and there is a risk that it is difficult to securely press the chemical shell. In particular, because it is a chemical shell and the outer shell is hardened to a high hardness, it must be cut using a carbide circular saw. May cause the position to shift. If the position of the shell is shifted at the time of cutting, the saw blade may be distorted, the blade or the carbide tip may be severely worn out or damaged, and the life may be shortened. For this reason, one of the applicants of the present application has previously proposed the cutting device described in Patent Document 1 so that the shell can be reliably pressed and clamped.

  This cutting device is a cutting device for holding the chemical shell at the cutting position of the saw blade of the cutting machine when cutting the abandoned chemical shell with a cutting machine. A shell accommodating portion corresponding to the shape of the shell to be cut is provided on the inner side surface of the apparatus main body, a clamp portion formed in a shape that can be pressed by the clamping means of the cutting machine is provided on the outer side surface, and the bullet is partially provided. An opening that can be exposed and inserted and removed is formed, and the main body of the device has a split structure. When the device is opened, a shell is received in the shell receiving portion and discharged. .

Japanese Patent Application No. 2004-052599

  In the cutting apparatus disclosed in Patent Document 1 described above, the abandoned chemical shell is accommodated in a container-shaped apparatus main body, and the apparatus main body is supplied to the cutting machine. The clamping means can press the apparatus main body. It is like that. Therefore, if the outer diameter shape of the main body of the apparatus is constant, the abandoned chemical shell can be clamped by the clamping means through the main body of the apparatus at any position. Although there are various shapes of abandoned chemical shells, it is only necessary to arrange the main body of the device according to each shape and to have a structure that can clamp the clamping means with respect to the main body of each device. If it is a prism or the like, the clamping means may have a simple structure.

  However, since it is necessary to house the abandoned chemical shell in the main body of the apparatus, the following problems may occur. In other words, the cutting operation of the abandoned chemical cannonball requires that the chemical agent filled in and contained in the cannonball has an adverse effect on the human body, and therefore needs to be automatically processed without manual operation. That is, it is necessary to automate the operation of accommodating the abandoned chemical shell in the main body of the apparatus. Further, prior to the storing operation, the abandoned chemical shell is frozen to solidify the remaining chemical agent. Thereafter, a process of filling the apparatus main body is performed, and then a cutting process is performed. It is necessary to automate each of these processes. In particular, in order to automate the work of housing the abandoned chemical shell in the main body, it is necessary to align the direction of the main body with the direction of the shell, or to hold the shell Since complicated operations such as loading into the main body of the apparatus are required, it is not easy to automate. In addition, since abandoned chemical shells have been buried for a long period of time, there is a possibility that some of them cannot be accommodated by the main body of the device due to corrosion or deformation. This type of deformed abandoned chemical cannonball may in some cases have to be handled manually.

  Therefore, in the present invention, not only abandoned chemical shells but also a workpiece whose cross-sectional shape in the direction perpendicular to the axis is not uniform in the axial direction is securely held and pressed and fixed. It is an object of the present invention to provide a clamping device for a cutting device that can perform the above-mentioned.

  As a technical means for achieving the above object, a clamping device for a cutting device according to the present invention is a clamping device for a cutting device which holds a workpiece having a substantially circular cross section at a cutting position by a saw blade of a circular saw cutting machine. A pedestal on which the workpiece is placed, a receiving plate having a holding surface that intersects the placement surface of the pedestal at an appropriate angle, and a workpiece placed on the pedestal It is characterized in that it is movable and retractable, and includes a moving pressing means provided with a pressing portion that presses the object to be cut against the gantry and the receiving plate when moving forward.

  That is, when the moving pressing means is operated to press the pressing portion against the workpiece, the workpiece is pressed from at least three directions by the placement surface, the holding surface, and the pressing portion, It prevents the object to be cut from moving carelessly during cutting.

  The clamping device for a cutting device according to the invention of claim 2 is characterized in that an angle between the holding surface of the receiving plate and the mounting surface of the gantry is approximately 90 °.

  In other words, the object to be cut is brought into contact with two orthogonal surfaces, and the force applied by the moving pressing means via the pressing portion is received by the two surfaces. For this reason, the position of the object to be cut is restricted by the two surfaces and the pressing portion, and is prevented from moving from the position by being pressed by the pressing portion.

  The clamping device for a cutting device according to the invention of claim 3 is characterized in that the holding surface is formed in an arc shape corresponding to an arc of a maximum diameter of an object to be cut by the cutting machine. Yes.

  That is, the holding surface is formed in an arc shape. In the case of a workpiece having a circular cross-sectional shape smaller than the arc, the holding surface and the workpiece are in point contact.

  According to a fourth aspect of the present invention, there is provided a clamping device for a cutting device, wherein the pressing portion is formed by a flat pressing surface and passes through a point that contacts the workpiece on the pressing surface and is a straight line orthogonal to the pressing surface. However, it passes through the middle of the point which contacts the to-be-cut | disconnected object in each of the mounting surface of the said mount frame, and the said holding surface.

  The pressing force by the pressing portion is applied to the mounting surface and the holding surface in appropriate sizes.

  The clamp device for a cutting device according to the invention of claim 5 is a workpiece to be cut having a different outer diameter size to be cut by the cutting machine, while the pressing portion is formed by a flat pressing surface. A straight line passing through the center of each object to be cut in a state of being placed on the gantry and being pressed against the holding surface is a perpendicular direction of the pressing surface.

  The direction of the pressing force by the moving pressing means passes through the center of the object to be cut, and this pressing force is applied evenly between the mounting surface and the holding surface. In addition, the pressing force is applied more evenly to the placement surface and the holding surface regardless of the diameter of the workpiece.

  According to a sixth aspect of the present invention, there is provided a clamping device for a cutting device, wherein a surface of the pressing portion that contacts the workpiece is formed in a substantially V-shaped cross section, and a top portion of the V-shaped valley is formed by the moving pressing means. It is characterized by being located on the axis.

  The object to be cut is brought into contact with the pressing portion at two points to receive a pressing force. That is, the object to be cut is held at four points by combining the placement surface and the contact portion between the holding surface.

  According to a seventh aspect of the present invention, there is provided the clamping device for a cutting device, wherein the shaft of the moving pressing means is an object to be cut having different outer diameters to be cut by the cutting machine and is placed on the gantry. The height of the gantry can be changed so as to substantially coincide with a straight line passing through the center of each object to be cut in a state of being pressed against the holding surface.

  When the pressing part is formed in a substantially V-shaped cross section, if the diameter of the object to be cut is changed, the positional relationship between the pressing part and the object to be cut differs, and the object to be cut in the V shape of the pressing part. Will not fit. Therefore, the gantry can be raised and lowered, for example, so that the height can be changed. In order to change the height, the gantry with different heights may be exchanged.

  Further, the clamping device for a cutting device according to the invention of claim 8 is characterized in that the object to be cut is a derelict chemical shell.

  That is, the clamping device is provided in a cutting device for cutting the abandoned chemical shell. As described above, the abandoned chemical cannonball has a high surface hardness and needs to be securely pressed at the time of cutting, and has a so-called cannonball shape, and its cross-sectional shape perpendicular to the axis is not uniform in the axial direction. Absent. If this cutting device is equipped on a cutting machine that cuts the derelict chemical cannonball, the derelict chemical cannonball can be reliably pressed and can be cut stably.

  According to the clamping device for a cutting device according to the present invention, the object to be cut can be pressed to two places by the moving pressing means and clamped at three places, so that it can be stably fixed.

  Further, according to the clamping device for a cutting device according to the second aspect of the present invention, since the mounting surface and the holding surface are located at approximately 90 °, the cutting device can be reliably held regardless of the diameter of the workpiece. it can.

  In addition, according to the clamping device for a cutting device according to the third aspect of the present invention, the larger the outer diameter of the workpiece, the harder it is to hold, but the holding surface is formed in an arc shape corresponding to the workpiece having the maximum outer diameter. By doing so, even a workpiece having a large diameter can be securely held and clamped.

  In addition, according to the clamp device for a cutting device according to the fourth aspect of the present invention, since the pressing force by the moving pressing means is reliably distributed and applied to the mounting surface and the holding surface, the object to be cut is more stable. Can be held securely and can be reliably clamped, and the object to be cut can be prevented from moving inadvertently during cutting.

  Moreover, according to the clamp apparatus for cutting devices which concerns on invention of Claim 5, regardless of the outer diameter of a to-be-cut object, any to-be-cut object can be hold | maintained stably and can be clamped reliably.

  Further, according to the clamping device for a cutting device according to the invention of claim 6, since the pressing force applied to the object to be cut is in two directions, a more stable holding can be performed and the state is more securely pressed. Can be maintained.

  Moreover, according to the clamping device for a cutting device according to the invention of claim 7, even a workpiece having different outer diameters can be held, and the workpiece is inadvertently pressed at the time of cutting. There is no movement.

  In addition, according to the clamping device for a cutting device according to the eighth aspect of the present invention, when a mechanical cutting process is performed, the abandoned chemical cannonball can be stably held and securely pressed. This makes it easier to automate the detoxification / disposal process and further promote the detoxification / disposal process.

  Hereinafter, based on the illustrated preferred embodiment, the clamping device for a cutting device according to the present invention will be specifically described. This embodiment is particularly suitable for cutting abandoned chemical shells, and FIGS. 6 and 7 show the structure of a typical shell of this type.

  Abandoned chemical shells are of the type called “red bullets” and “kii bullets” depending on the chemical agent filled inside. There are four types with nominal diameters of 75mm, 90mm, 105mm and 150mm respectively. FIG. 6 shows a schematic structure of a 150 mm bullet 10. The outer shape is a rotating body with a thin tip, and has a so-called bullet shape. A glaze cylinder 12 filled with the glaze 11 is disposed at the tip, and the tip is closed by a plug 13. The glaze cylinder 12 is accommodated at the tip of the drug cylinder 14, the bottom of the drug cylinder 14 reaches the rear end of the red bullet 10, and the part from the center to the rear end is accommodated in the outer shell 16, A chemical agent 15 is filled in a gap between the drug cylinder 14 and the outer shell 16. FIG. 7 shows a schematic structure of the 90 mm threshold 20. The outer shape is a rotating body in which the portion that is deviated from the central portion toward the front end portion has the largest diameter and the front end portion and the rear end portion are thin, and has a so-called bullet shape. A glaze cylinder 22 filled with the glaze 21 is disposed at the distal end, and the distal end is closed by a plug body 23. The glaze cylinder 22 is accommodated in an outer shell 24, and the outer shell 24 is filled with a chemical agent 25. The rear end of the glaze cylinder 22 reaches almost the center of the bomb 20.

FIG. 1 shows a first embodiment of a clamping device for a cutting device according to the present invention, and is a cross-sectional view taken along a plane perpendicular to the axis of a workpiece W that is a workpiece to be clamped by the clamping device 30. Note that the workpiece W is located alongside what different outer diameters, respectively indicated by W _1, W _2, W _3, will be described with reference to these codes as needed. The workpiece W is cut by a rotating circular saw 31 having a saw blade. The circular saw 31 is attached to a support arm (not shown) that swings about an axis (not shown). The circular saw 31 pivots in the direction indicated by the arrow Q by the swing of the support arm so as to advance and retreat with respect to the workpiece W. It is. FIG. 1 shows a state in which the circular saw 31 is at a position where the workpiece W is cut, and the workpiece W is placed on a gantry 32. The gantry 32 is attached to a cradle plate 33, and the mounting surface 32a of the gantry 32 on which the workpiece W is placed and the holding surface 33a of the cradle plate 33 are substantially perpendicular. Further, the swing axis of the support arm of the circular saw 31 is on the side where the receiving plate 33 is provided.

While maintaining the state of facing the holding surface 33a of the cradle plate 33, the pressing portion 34 is provided to be able to advance and retreat. The pressing portion 34 is attached to the tip of a piston rod 36 that is advanced and retracted by a hydraulic cylinder 35 as a moving pressure clamping means, and is advanced and retracted by the operation of the hydraulic cylinder 35. The advancing / retreating direction of the piston rod 36 is appropriately tilted from the horizontal direction so that the forward end is at the lower position, and preferably tilted by 10 ° to 20 °. The front end surface of the pressing portion 34 is formed into a flat surface and serves as a pressing surface 34a. The direction in which the pressing surface 34a is directed is inclined with respect to the advancing / retreating direction of the pressing portion 34, passes through a point where the pressing portion 34 contacts the workpiece W, and a straight line orthogonal to the pressing surface 34a is formed between the mounting surface 32a and the holding surface. It passes through the middle of the point of contact with the workpiece W in each of 33a. Furthermore, it is desirable if the straight lines passing through the centers of the workpieces W ₁ , W ₂ and W ₃ are perpendicular to the pressing surface 34a. In this embodiment, the angle formed by the pressing surface 34a and the mounting surface 32a has a relationship of 50 ° to 70 °.

  The following operation | movement is demonstrated about the clamp apparatus based on 1st Embodiment of this invention comprised by the above.

  The workpiece W is placed on the gantry 32 and is sequentially moved in the axial direction thereof, that is, in the direction penetrating the paper surface in FIG. As a result of this movement, when the position where the workpiece W is to be cut is located at the cutting position of the circular saw 31, the hydraulic cylinder 35 is actuated to move the piston rod 36 forward. Along with this advancement, the pressing portion 34 also advances, and when the pressing surface 34a contacts the workpiece W, the workpiece W is pressed. As a result, the workpiece W is pressed against the mounting surface 32 a of the gantry 32 and the holding surface 33 a of the receiving plate 33. That is, the workpiece W is fixed by receiving force from three directions of the gantry 32, the cradle plate 33, and the pressing portion 34. For this reason, the workpiece | work W will be hold | maintained reliably and it will be reliably fixed to a cutting position. Then, when the circular saw 31 is swung by a support arm (not shown) to enter the workpiece W, the workpiece W is cut. Also at this time, since the workpiece W is pressed and held from three directions, the pressed state is surely maintained and the inadvertent movement is prevented. Thereafter, the workpiece W is moved in the axial direction, and the next cutting position is positioned within the advance / retreat area of the circular saw 31.

In the clamping device 30 according to the first embodiment, since the gantry 32 and the cradle plate 33 that are fixedly provided are positioned substantially at right angles, as shown in FIG. 1, the workpieces W ₁ , W ₂ Even when the outer diameters of W ₃ are different, these works W ₁ , W ₂ , W ₃ can be reliably pressed against the gantry 32 and the receiving plate 33. For this reason, even if it is the workpiece | work W whose cross-sectional shape is not uniform in an axial direction like an abandoned chemical cannonball, it can cut | disconnect in the state compressed reliably.

  Next, a cutting device clamping device according to a second embodiment shown in FIG. 2 will be described. 2 is a cross-sectional view taken along a plane perpendicular to the axis of the workpiece W, which is a workpiece to be cut and clamped by the clamping device 40, as in FIG. Further, the same parts as those in the structure shown in FIG. 1 will be described with the same reference numerals as those in FIG. Further, the workpiece W is cut by a circular saw 31 attached to a swingable support arm (not shown). The workpiece W is placed on the placement surface 42a of the gantry 42. The gantry 42 is attached to a cradle plate 43 so as to be movable up and down. An arc-shaped holding surface 43a is formed on the receiving plate 43, and the workpiece W placed on the gantry 42 is in contact with the placing surface 42a and the holding surface 43a.

  A pressing portion 44 that can be advanced and retracted while facing the holding surface 43a is provided. The pressing portion 44 is attached to the tip of a piston rod 36 that is advanced and retracted by a hydraulic cylinder 35. As in the first embodiment, the advancing / retreating direction of the piston rod 36 is appropriately inclined with respect to the horizontal direction so that the forward end is at the lower position, and preferably approximately 15 °. A surface of the pressing portion 44 facing the work W is a pressing holding surface 44a having a substantially V-shaped cross section. The top of the substantially V-shaped valley is positioned on the axis of the piston rod 36, and the workpiece W is placed on the mounting surface 42a and the holding surface 43a with the center of the workpiece W positioned on the axis. It comes in contact. As shown in FIG. 2, when cutting a small-diameter workpiece W2, the gantry 42 is raised so that the workpiece W2 can come into contact with the mounting surface 42a and the holding surface 43a. .

  The operation of the clamping device 40 according to the second embodiment of the present invention configured as described above will be described below.

  The workpiece W is placed on the gantry 42 and is sequentially moved in the axial direction thereof, that is, in a direction penetrating the paper surface in FIG. By this movement, when the position where the workpiece W is to be cut is located at the cutting position of the circular saw 31, the pressing portion 44 is advanced by the operation of the hydraulic cylinder 35, and the workpiece W is moved to the mounting surface 42a and the holding surface 43a. Press. At this time, since the pressing holding surface 44a of the pressing portion 44 is formed in a substantially V-shaped cross section, the two portions of the pressing portion holding surface 44a come into contact with the workpiece W. That is, the workpiece W is fixed by receiving forces from four directions of the two places of the pressing and holding surface 44a, the placement surface 42a, and the holding surface 43a. Therefore, the workpiece W is surely held and is securely fixed at the cutting position. Then, when the circular saw 31 is swung by a support arm (not shown) to enter the workpiece W, the workpiece W is cut. Also at this time, since the workpiece W is pressed and held from the four directions, the pressing state is surely maintained and the inadvertent movement is prevented. Thereafter, the workpiece W is moved in the axial direction, and the next cutting position is positioned within the advance / retreat area of the circular saw 31.

  In the clamping device 40 according to the second embodiment, since the holding surface 43a is formed in an arc shape, there is a case where the holding surface 43a does not come into contact depending on the diameter of the workpiece W. In such a case, the gantry 42 is moved up and down and adjusted so that the workpiece W comes into contact with the holding surface 43a. In particular, in the clamping device 40 according to the second embodiment, since the pressing portion 44 is a pressing holding surface 44a having a substantially V-shaped cross section, when the workpiece W is pressed by the pressing portion 44, the V-shaped valley Since it is necessary to make the top part substantially coincide with the center line of the workpiece W, it is necessary to adjust so that the workpiece W is positioned at the position.

  3 to 5 show a state in which the chemical cannonball is cut by the cutting machine and is clamped by the clamping device of the present invention. The shape of the 90 mm shell 51 shown in FIG. 7 is a spindle shape, and the shell is characterized by a relatively short length of about 30 mm. On the other hand, in order to reliably cut the shell at a predetermined position using the present clamping device, the mounting surface 32a (42a) is arranged so that the clamp position sandwiching the cutting position is a straight barrel portion parallel to the center axis of the shell. ) And the holding surface 33a (43a), the pressing surface 34a, or the pressing holding surface 44a. As shown in FIG. 3, in order to clamp the straight barrel part far from the head side in order to divide the 90 mm shell 51 into two parts, the shell 51 on the gantry 32 (42) is moved to the cutting position of the cutting machine. The head of the cannonball 51 is clamped by the moving clamp 52 that moves to the position. Further, the cradle plate 33 (43) is arranged adjacent to each other with an appropriate interval so that the circular saw 31 can enter the gap G between the pair of cradle plates 33 (43). In addition, a pair of the pressing portions 34 (44) is arranged to be able to advance and retreat at a position where the receiving plate 33 (43) faces.

FIG. 4 shows a case where a relatively small-diameter 105 mm shell 55 is cut into three parts, and the head of the shell 55 is pressed by a moving clamp 56. The cradle plate 33 (43) is arranged at three locations, and appropriate gaps G ₁ and G ₂ are provided, respectively. The pressing portion 34 (44) (not shown) is disposed so as to be able to advance and retreat, facing each of the receiving plates 33 (43). Moreover, the circular saw 31 is to be able to enter the gap G ₁ between the pedestal plate 33 located farthest from the mobile clamp 56 and (43) and cradle plate 33 adjacent thereto (43) It is. Then, a cut from the tail side of the projectile 55, wherein releasing the mobile clamp 56 after cutting, after pressing again, the next cutting position of the projectile 55 moves the該砲bullet 55 to be located in G ₁ . Next, it is pressed by the pressing portion 34 (44) and cut by the circular saw 31.

FIG. 5 shows a case where a relatively large-diameter 150 mm shell 61 is cut into three parts, and the head of the shell 61 is clamped by a moving clamp 62. Cradle plate 33 (43) are arranged in four positions, each suitable gap G ₁ ~G ₃ is provided. The pressing portion 34 (44) (not shown) is disposed so as to be able to advance and retreat, facing each of the receiving plates 33 (43). Moreover, the circular saw 31 is to be able to enter the gap G ₁ between the pedestal plate 33 located farthest from the mobile clamp 62 and (43) and cradle plate 33 adjacent thereto (43) It is. Then, a cut from the tail side of the projectile 61, wherein releasing the mobile clamp 62 after cutting, after pressing again, the next cutting position of the projectile 61 moves the該砲bullet 61 to be located in G ₁ . Next, it is pressed by the pressing portion 34 (44) and cut by the circular saw 31.

  That is, the small shell 51 shown in FIG. 3 is divided into two parts, and in the case of the comparatively small diameter shell 55 shown in FIG. 4, and in the case of the comparatively large diameter shell 61 shown in FIG. An example is shown. These division numbers are such that the size of a piece after division can be used for an incinerator for an incineration process that is a subsequent process of the cutting process.

  In the above-described embodiment, the description has been given as a clamp device used when cutting abandoned chemical shells. However, the present invention is not limited to chemical shells, and the cross-sectional shape is substantially circular, and the cut is not uniform in the axial direction. Even if it is a thing, this clamping device can be used.

  The present invention is a cutting device that is particularly effective for speeding up and automating the cutting process when cutting abandoned chemical shells remaining in the mainland of China with a cutting machine for detoxification and disposal. Implement chemical weapons ban treaties quickly while keeping costs and processing costs low.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining 1st Embodiment of the clamp apparatus for cutting devices which concerns on this invention, and is the schematic sectional drawing cut | disconnected by the axis orthogonal surface of the to-be-cut object. It is a figure explaining 2nd Embodiment of the clamp apparatus for cutting devices which concerns on this invention, and is the schematic sectional drawing cut | disconnected by the axis orthogonal surface of the to-be-cut object. It is a figure explaining embodiment at the time of providing a cutting device concerning this invention in a cutting device, and the case where a small cannonball is cut is shown. It is a figure explaining other embodiment at the time of providing the cutting device concerning this invention in a cutting device, and the case where a comparatively small diameter cannonball is cut is shown. It is a figure explaining another embodiment at the time of providing the cutting device concerning this invention in a cutting device, and the case where a comparatively large diameter bullet is cut is shown. It is an example of a shell to be disposed of, and is a cross-sectional view cut along a plane including an axis indicating a schematic structure of a bullet. It is an example of a shell to be disposed of, and is a cross-sectional view cut along a plane including an axis showing a schematic structure of a threshold. It is a partially omitted plan view showing a schematic structure of a swing arm type circular saw cutter as an example of a cutter using the cutting device according to the present invention. FIG. 9 is a front view of the swing arm type circular saw cutting machine shown in FIG.

Explanation of symbols

10 Red Bull
20 Kibo
30 Clamping device
31 Circular saw
32 frame
32a Mounting surface
33 base plate
33a Holding surface
34 Pressing part
34a Press surface
35 Hydraulic cylinder (moving pressure clamping means)
36 Piston rod
40 Clamping device
42 frame
42a Mounting surface
43 base plate
43a Holding surface
44 Pressing part
44a Press holding surface

Claims (8)

In a clamp device for a cutting device that holds a workpiece having a substantially circular cross section at a cutting position by a saw blade of a circular saw cutting machine,
A platform on which the object to be cut is placed;
A cradle plate having a holding surface that intersects the mounting surface of the gantry at an appropriate angle;
A movable pressing means comprising a pressing portion that is movable forward and backward with respect to the workpiece placed on the gantry and that presses the workpiece against the gantry and the cradle plate when moving forward. A clamping device for a cutting device.   The clamping device for a cutting device according to claim 1, wherein an angle between the holding surface of the cradle plate and a mounting surface of the gantry is approximately 90 °.   The clamping device for a cutting device according to claim 1, wherein the holding surface is formed in an arc shape corresponding to an arc of a maximum diameter of an object to be cut by the cutting machine.   The pressing portion is formed of a flat pressing surface, and a straight line that passes through the point of contact with the object to be cut of the pressing surface and is orthogonal to the pressing surface is formed on each of the mounting surface of the gantry and the holding surface. The clamp device for a cutting device according to any one of claims 1 to 3, wherein the device passes through an intermediate point of contact with the cut object.   The pressing portion is formed by a flat pressing surface, and is an object to be cut having different outer diameter dimensions to be cut by the cutting machine, placed on the gantry, and pressed in the holding surface. The clamp device for a cutting device according to claim 4, wherein a straight line passing through the center of the workpiece is a direction of a perpendicular to the pressing surface.   The surface of the pressing portion that contacts the workpiece is formed in a substantially V-shaped cross section, and the top portion of the V-shaped valley is located on the axis of the moving pressing means. The clamping device for a cutting device according to claim 3.   The axis of the moving pressure clamping means is a workpiece to be cut by the cutting machine, and the center of each workpiece in a state of being placed on the gantry and pressed against the holding surface The clamp device for a cutting device according to claim 6, wherein the height of the gantry can be changed so as to substantially coincide with a straight line passing through the cutting device.   The clamp device for a cutting device according to any one of claims 1 to 7, wherein the object to be cut is an abandoned chemical shell.

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