JP6850509B1 - Cutting device for plate-shaped workpieces - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotate a disk cutter while driving it while rotating it in a circular motion (eccentric rotation) to add a "cutting action" to the disk cutter to perform rotary cutting. SOLUTION: When a cutting unit U on which a disc cutter K is supported and a plate-shaped work W are relatively linearly moved to cut the work W, the disc cutter K revolves with respect to a rotation center. By being driven and rotated while moving in a circular motion, the synergistic effect of the original rotary cutting action due to the continuous drive rotation of the disk cutter K and the "cutting action" caused by the circular motion of the disk cutter K is achieved. It can be cut smoothly with a large cutting action. [Selection diagram] Fig. 5

Description

The present invention relates to a plate-shaped work cutting device in which the cutting force of the disc-shaped work is increased by adding a "cutting action" to the disc-shaped work.

An apparatus for cutting a plate-shaped work using a disk cutter has a configuration in which the work is "continuously cut" by a drive-rotating disk cutter, for example, as shown in Patent Documents 1 and 2. Here, "continuous cutting" means cutting the work continuously in time by the cutting portion on the outer peripheral portion of the disk cutter. When a soft pan baked into a prismatic shape is sliced to a predetermined thickness as in Patent Document 1, chips (chips) are used by using a disk cutter having a sharp blade formed on the outer peripheral portion. ) Can be cut without generating), but when cutting foamed resin or wood, since the disk cutter uses a saw blade, chips are continuously generated during cutting, which is a great deal for the processing. Had a lot of effort.

In this way, in "continuous cutting" by the disk cutter, the arrangement position of the disk cutter with respect to the plate-shaped work only changes in the arrangement position along the relative movement direction between the cutter and the work. The arrangement position of the disk cutter and the work in the side view, that is, the center position of the disk cutter is unchanged. Therefore, the cutting force of the disk cutter with respect to the work is not so large.

Further, the work to be cut also has a certain limit on the thickness of the work that can be cut, although it depends on the hardness, and the range of the work that can be cut including the plate thickness and hardness is limited. Will be done.

Japanese Unexamined Patent Publication No. 58-132696 Japanese Unexamined Patent Publication No. 2005-131958

In the present invention, the disk cutter is rotated by driving rotation while revolving (eccentric rotation), and the disk cutter is rotationally cut by adding a "cutting action" to the disk cutter to cut the disk cutter with respect to the work. The challenge is to dramatically increase power.

The invention of claim 1 for solving the above problems, a cutting unit for disc cutter is supported by a plate-shaped workpiece is relatively linear movement, a device for cutting the workpiece,
The cutting unit is
The rotation drive shaft to which the disk cutter is integrally attached to one end in the axial direction is supported by being eccentrically supported by a predetermined amount of eccentricity with the revolution drive shaft to be driven and rotated.
The spur gear integrally attached to the other end of the rotation drive shaft becomes concentric with the revolution drive shaft and meshes with an internal gear that is driven and rotated independently of the disk cutter to drive the revolution. A planetary gear mechanism that drives and rotates the rotation drive shaft while revolving the rotation drive shaft around the axis of the shaft is configured.
The disc cutter is continuously driven by the drive rotation of the revolution drive shaft and the internal gear, and the disk cutter is continuously driven and rotated while making a circular motion by the revolution with respect to the axis of the revolution drive shaft and the internal gear. It is characterized in that the work is cut by a synergistic effect between the original rotary cutting action due to rotation and the cutting action generated by the circular motion of the disk cutter.

According to the invention of claim 1, the spur gear integrally attached to the other end of the rotation drive shaft becomes concentric with the revolution drive shaft and is driven and rotated independently of the rotation drive shaft. A planetary gear mechanism is formed by meshing with an internal gear, and the rotation drive shaft revolves around the axis of the revolution drive shaft by the drive rotation of the revolution rotation shaft, so that the rotation drive shaft becomes one end of the rotation drive shaft. The attached disk cutter is driven and rotated while performing circular motion (eccentric rotation). That is, in the disk cutter, the revolving drive shaft and the internal gear are independently driven and rotated, so that the workpiece is cut while circularly moving due to the revolving of the revolving drive shaft and the internal gear with respect to the axis. The work is intermittently subjected to a large cutting force due to the synergistic effect of the original rotary cutting action due to the continuous drive rotation of the disk cutter and the cutting action generated by the revolution (circular motion) of the disk cutter. Be disconnected. Further, since the disk cutter rotates continuously while revolving, the above-mentioned "cutting action" occurs on the entire circumference of the disk cutter, so that the disk cutter cuts over the entire circumference. Since the action does not occur, that is, the "cutting action" does not occur only at a specific part on the circumference of the disc cutter, the life of the disc cutter is extended by making the wear of the disc cutter uniform. ..

Further, the cutting action of the plate-shaped work cutting device of the invention of claim 1 will be described as follows by abstracting the "planetary gear mechanism" . The disk cutter rotates while being driven and rotated while rotating in a circular motion (eccentric rotation) due to revolution with respect to the center of revolution, so that the blade portion on the outer circumference of the disk cutter intermittently bites into the work and cuts. Will be done. That is, the disc cutter has a continuous "cutting action" in which the disc cutter bites into the workpiece and cuts it only at a specific rotation angle during its rotation. The work is cut in synergy with the "rotational cutting action" of driving rotation, and at the remaining rotation angles other than the specific rotation angle, the disk cutter retracts from the work to continue without cutting the work. The work is cut by the rotating "intermittent cutting action". In the cutting of the invention of claim 1, the entire disk cutter revolves (circular motion) while the disk cutter continuously drives and rotates, thereby causing a "cutting action". The phenomenon is that the entire disk cutter moves with respect to the work while cutting the work, so a "pulling action" occurs, which causes the work to perform multiple cutting actions (continuous rotation of the disk cutter). Cutting action, cutting action and pull cutting action) are synergistic, and it is possible to cut smoothly with a large cutting action. As a result, the disk cutter having a sharply formed peripheral edge enables cutting of the work without generating chips (chips). At an angle other than the specific rotation angle during the rotation of the cutter, the disk cutter is retracted with respect to the work, so that there is no cutting action.

That is, in the disk cutter, at the specific rotation angle during its rotation, the disk cutter moves in a direction perpendicular to the plate surface of the plate-shaped work due to the circular motion of the disk cutter, and the work is concerned. On the other hand, the "tap cutting action" that the disk cutter bites into the "tap" and the original "rotational cutting action" are synergistically cut, and the remaining rotation angles other than the specific rotation angle are used. Since the work is cut by the "intermittent cutting action" in which the work is not cut at all, the cutting force of the disk cutter with respect to the work is dramatically increased. Further, due to the circular motion of the disc cutter, the direction of the cutting force of the disc cutter with respect to the work is perpendicular to the plate surface of the work at the moment when the disc cutter is retracted after being placed in the foremost position. As a result, the maximum cutting force is generated instantaneously, so that the cutting force of the disk cutter is dramatically increased as compared with the case of simply rotating continuously. For this reason, the range of the plate-shaped workpiece to be cut by the disk cutter is widened, and even a large plate-thick or hard workpiece that could not be cut only by the continuous rotary cutting action of the disk cutter can be cut. ..

Further, according to the invention of claim 1, since the work is cut by the sharp blade portion on the outer circumference of the disk cutter, chips are not generated at the time of cutting, and the processing of chips, which is indispensable in the conventional cutting, can be performed. It becomes unnecessary.

The invention of claim 2 is characterized in that, in the invention of claim 1 , the revolution drive shaft and the rotation drive shaft are driven by separate variable speed drive motors.

According to the invention of claim 2 , since the revolution drive shaft and the rotation drive shaft are driven by individual variable speed drive motors, the rotation speeds of the revolution drive shaft and the rotation drive shaft, that is, the rotation drive The number of revolutions (circular motion) of the disk cutter attached to the shaft and the number of revolutions of the rotation drive shaft can be changed individually and easily without changing the number of teeth of the chain gear or the like. Further, according to the invention of claim 3, since the revolution drive shaft and the rotation drive shaft are driven by individual variable speed drive motors, the hardness of the work and the extension (optimization) of the blade life are taken into consideration. The number of rotations of the disk cutter can be arbitrarily selected.

The invention of claim 3 is an apparatus for cutting a cutting unit on which a disk cutter is supported and a plate-shaped work by relatively linearly moving the work.
The cutting unit is
The rotation drive shaft to which the disk cutter is integrally attached to one end in the axial direction is supported by being eccentrically supported by a predetermined amount of eccentricity with the revolution drive shaft to be driven and rotated.
The internal gear integrally attached to the other end of the rotation drive shaft is meshed with a spur gear fixed to the frame of the cutting unit to drive the rotation around the axis of the rotation drive shaft. A planetary gear mechanism that drives and rotates the rotation drive shaft while revolving the shaft is configured.
Due to the drive rotation of the revolution drive shaft, the disk cutter continuously drives and rotates while making a circular motion by the revolution with respect to the axis of the revolution drive shaft, so that the original rotation cutting action due to the continuous drive rotation of the disk cutter It is characterized in that the work is cut by a synergistic effect with the cutting action generated by the circular motion of the disk cutter.

The invention of claim 3 is the same as the invention of claim 1 , except that the mechanism for circularly moving the disk cutter is different from that of the invention of claim 1. That is, in the invention of claim 3 , the internal gear integrally attached to the other end of the rotation drive shaft is a disk cutter by a planetary gear mechanism meshed with a spur gear fixed to the frame of the cutting unit. Is revolved (circular motion).

According to the invention of claim 4, in the invention of any one of claims 1 to 3 , a cutter support frame for movably supporting the cutting unit is provided on the work table on which the work is fixedly arranged.
The cutting unit guided by the linear guide provided on the side surface of the cutter support frame becomes movable by being connected in the middle of the endless chain stretched along the moving direction of the cutting unit. Ori,
The cutting unit is characterized in that it moves at a set speed to cut a work fixedly arranged on the work table by driving the endless chain and traveling around it.

The invention of claim 4 is a plate-like invention in which the work is fixedly arranged on a work table and the cutting unit moves linearly along the side surface of the cutter support frame in the invention of any one of claims 1 to 3. It cuts the work.

The invention of claim 5 is the invention of claim 4 , wherein the blade portion on the outer periphery of the lower end of the disk cutter of the cutting unit is inserted into the work table in a non-contact state to prevent lateral vibration. It is characterized in that a stopper member is arranged.

According to the invention of claim 5, the work table is provided with a cutter anti-vibration member for preventing lateral vibration by allowing the blade portion on the outer periphery of the lower end of the disk cutter to enter in a non-contact state. Since the lateral vibration of the blade portion on the outer circumference of the disk cutter is prevented, the cutting force of the disk cutter is further enhanced.

The present invention (the invention of claim 1, 3), rotation drive shaft mounted disc cutter on one end portion in the axial direction is supported eccentrically to the revolution drive shaft, rotation of the rotation drive shaft, the planetary gears Since the mechanism is used, the disk cutter is driven and rotated while rotating in a circular motion (eccentric rotation) by the revolution with respect to the center of revolution, so that the blade portion on the outer periphery of the disk cutter is intermittent with respect to the work. It bites into the target and is cut. That is, the disc cutter has a "snap cutting action" in which the disc cutter bites into the work in a "snap" shape and cuts only at a specific rotation angle during the rotation, and the disc cutter is continuous. The work is cut in synergy with the "rotational cutting action" of the drive rotation, and at the remaining rotation angles other than the specific rotation angle, the disk cutter retracts from the work to continue without cutting the work. The work is cut by the rotating "intermittent cutting action". At an angle other than the specific rotation angle during the rotation of the cutter, the disk cutter is retracted with respect to the work, so that there is no cutting action. Further, since the work is cut by the sharp blade portion on the outer circumference of the disk cutter, chips are not generated at the time of cutting, and the processing of chips, which is indispensable in the conventional cutting, becomes unnecessary.

It is a perspective view of the cutting apparatus which concerns on this invention. (A) is also a front view, and (b) is an enlarged sectional view taken along line ZZ of (a). It is also a plan view. It is a side view which shows the state which the cutting unit U is supported on the side surface of the support frame 3 so that it may travel in a horizontal direction. It is also a perspective view. It is a vertical sectional view of the cutting unit U using the planetary gear mechanism SP _1. It is an exploded perspective view of the cutting unit U. It is a rear view of the part of _{the planetary gear mechanism SP 1} which constitutes a cutting unit U. It is a rear view of the cutting unit U. It is a perspective view of the back side of the cutting unit U. It is a side view which shows the state which shows the state which the disk cutter K which revolves with respect to _{the axis C 00} of the revolution drive shaft 43 is arranged at the origin position of the revolution which is the highest position. It is a side view which shows the state which the disk cutter K revolves by 90 ° counterclockwise when viewed from the front side with respect to the origin position of the revolution. It is a side view which shows the state which the disk cutter K revolves 180 ° counterclockwise when viewed from the front side with respect to the origin position of the revolution, and the disk cutter K reaches the lowest position. A side surface showing a state in which the disk cutter K revolves 270 ° counterclockwise when viewed from the front side with respect to the origin position of revolution, and the disk cutter K is most retracted with respect to the cut tip surface of the work W. It is a figure. It is a side view which shows the state which the disk cutter K revolves in the counterclockwise direction by 360 ° when viewed from the front side with respect to the origin position of revolution, and returns to the new origin position of revolution. FIG. 5 is a side view showing a state in which the _{disk cutter K revolves counterclockwise by 90 ° when viewed from the front side with respect to the new axis C 01} of the revolution drive shaft 43 with respect to the new origin position of revolution. It is a schematic cross-sectional view of the structure which drives the revolution drive shaft 43 and the internal gear G ₁ by separate drive motors M ₁₁ and M _12. It is a vertical cross-sectional view of a cutting mechanism using another planetary gear mechanism SP _2. It is a rear view of the planetary gear mechanism SP _2.

Hereinafter, the present invention will be described in more detail with reference to optimum examples. 1 to 5 show the overall configuration of the cutting device according to the present invention. At one end of the work table 2 of the rectangular work table 1 in the width direction Y, a support frame 3 for supporting the cutting unit U described later and movably supporting it along the horizontal direction is provided on the work table 2. Is arranged along the longitudinal direction X of. Since both ends of the support frame 3 are supported by the support base 4, a work arrangement space portion 5 capable of arranging a plate-shaped work W as a cut object is provided between the support frame 3 and the upper surface of the work table 2. It is formed. A plurality of rectangular metal surface plate members 6 are arranged and fixedly arranged in the longitudinal direction X and the width direction Y on the upper surface of the work table 2 including directly under the support frame 3, and are fixedly arranged along the width direction Y. The lower end portion of the disk cutter K, which will be described later, is inserted between the two surface plate materials 6 to form a vibration damping space 7 (see FIG. 3) for preventing the runout. The work W is prevented from being displaced in the longitudinal direction X of the work table 2 by a pair of regulators 8 arranged on the upper surface of the work table 2 at predetermined intervals along the longitudinal direction X. The upper surface of the work W is pressed downward by the work retainer 11 in the vicinity where the disk cutter K of the cutting unit U, which will be described later, travels. The work presser 11 is configured to be pressed from above by a pair of presser plates 14 by rotation of the handles 13 of the presser 12s arranged at both ends in the longitudinal direction X. The rotation of the handle 13 of one pressing tool 12 is transmitted to the other pressing tool 12 via the connecting rod 15, and the rotation of one handle 13 causes the pair of pressing plates 14 to simultaneously press the work W. ing.

As shown in FIGS. 4 and 5, a pair of straight guide rails 16 are attached to the front side surface of the support frame 3 at predetermined intervals in the vertical direction, and the back surface of the rear plate 36 of the cutting unit U is attached. By fitting a pair of upper and lower fitting guide bodies 17 provided on the side to each of the straight guide rails 16, the cutting unit U linearly moves along the longitudinal direction X of the support frame 3. Further, both ends of the support frame 3 in the longitudinal direction X are along the front-rear direction (same as the width direction Y) which is the horizontal direction orthogonal to the longitudinal direction X of the work table 2 which is the traveling direction of the cutting unit U. Each chain gear 18a, 18b having a rotating axis is supported, and each chain gear 18a, 18b is equipped with an endless chain 21, and the portion of the endless chain 21 arranged below is only a predetermined length. Both ends of the endless chain 21 facing the missing portion in a chipped state are connected to each chain connecting rod 23 attached to a pair of protruding plates 22 projecting from the back surface side of the cutting unit U, respectively. ing. A pair of sprocket wheel 18a, one of the sprocket wheels 18a of 18b is rotated by a driving motor M _2, that Mutankusari 21 travels, the cutting unit U, runs along the pair of linear guide rails 16 .. In order to prevent the endless chain 21 from sagging, it is supported by a chain support 24 provided on the front side surface of the support frame 3 with the lower straight guide rail 16 interposed therebetween. In addition, in FIGS. 4 and 5, in order to regulate both moving ends of the cutting unit U along the longitudinal direction X of the support frame 3, detection sensors 25 are attached to both moving ends of the support frame 3. A dog 26 detected by the detection sensor 25 is attached to the rear plate 36 of the cutting unit U.

Next, the cutting unit U will be described with reference to FIGS. 6 to 10. The cutting unit U circularly moves (eccentric rotation) the disk cutter K attached to the tip of the cutter drive shaft (rotation drive shaft) 42, which will be described later, by the drive rotation of the _{drive motor M 1.} It drives and rotates K. That is, the drive motor M ₁ and the speed reducer 31 for decelerating the rotation of the drive shaft (not shown) of the drive motor M _{1 are integrally attached to the rear plate 36 described later, and the speed reducer 31} The first and second drive chain gears S ₁ and S ₂ , which are driven and rotated integrally with the output shaft 32, are integrally attached to the output shaft 32 via keys 33 and 34, respectively, and each drive chain gear S ₁ , S ₂ are arranged between the front plate 35 and the rear plate 36 and at the upper part on the back surface side of the rear plate 36, respectively, and the output shaft 32 penetrates the front plate 35 and the rear plate 36 to each bearing. It is rotatably supported by the front plate 35 and the rear plate 36 by 37 and 38. By tightening the bolt portion 32a projecting forward of the front plate 35 of the output shaft 32 with the nut 41, there is no gap along the axial direction of the output shaft 32, and the output shaft 32 is the bearing 37. , 38 are rotatably supported by the front plate 35 and the rear plate 36.

Immediately below the output shaft 32 of the speed reducer 31, a revolution drive shaft 43 is arranged to support a cutter drive shaft (rotation drive shaft) 42 in which a disk cutter K is integrally attached to a front end portion in the axial direction in an eccentric state. It is rotatably supported by the front plate 35 and the rear plate 36 via a pair of bearings 44a and 44b. The axis Ce of the cutter drive shaft 42 is arranged eccentrically by the amount of eccentricity (e _{1 ) with respect to the axis C 0 of the revolution drive shaft 43.} As shown in FIGS. 6 and 7, the bolt portion 42a at the tip of the cutter drive shaft 42 protrudes from the tip surface of the revolution drive shaft 43, and has a width across flats inside the bolt portion 42a of the cutter drive shaft 42. The inner knife fixing body 46a is non-rotatably fitted to the portion (the portion where two parallel surfaces are chamfered to prevent the member fitted to the outside of the portion from rotating), and the disk cutter K The bolt portion 42a is fitted into the center hole 47, and a portion of the disk cutter K near the center hole 47 is non-rotatably connected to the inner knife fixing body 46a via a plurality of fixing pins 48. When the outer knife fixing body 46b is fitted into the bolt portion 42a and the fixing nut 51 is screwed into the bolt portion 42a, the disk cutter K is attached to the bolt portion 42a at the tip of the cutter drive shaft 42. In FIG. 7, 49 shows a cutter cover for covering the disk cutter K of the cutting unit U.

Most of the revolution drive shaft 43 is arranged between the front plate 35 and the rear plate 36, and the cutter drive shaft 42 to which the disk cutter K is integrally attached has the axis Ce of the revolution drive shaft 43. It is rotatably supported via a pair of bearings 52a and 52b in a state where it is eccentrically arranged by an eccentric amount (e ₁ ) with respect to the axis C _{0 of.} And Hidokusari gear S ₃ mounted integrally with the flange portion 43a of the revolution drive shaft 43, the mounted on the driving chain gear S ₁ to the output shaft 32, Mutankusari 53 is hung. Since the axis Ce of the cutter drive shaft 42 is _{eccentric with respect to the axis C 0} of the revolution drive shaft 43 by the amount of eccentricity (e ₁ ), the revolution drive shaft 43 is arranged by the power transmitted from the output shaft 32. However, _{when the drive is rotated around the axis C 0} , the disc cutter K integrally attached to the cutter drive shaft 42 has the eccentricity (e _{1) centered on the axis C 0 of the revolution drive shaft 43.} ) Is the radius of the revolution (circular motion).

On the back side of the rear plate 36 is mounted is internal gear support 55, to the inside gear support member 55, the internal gear G ₁ is rotatably supported via a bearing 56, of the internal gear G _{1 The endless chain 54 is hooked on the driven chain gear S 4} integrally attached to the outer end face portion and _{the drive chain gear S 2} integrally attached to the output shaft 32, whereby the internal gear G ₁ is concentric with the revolving drive shaft 43 and is driven and rotated independently. The internal gear G ₁ is integrated with the internal gear connector 57, which is on the inner ring side of the bearing 56 and is supported on the rear plate 36 side so as not to be pulled out, via a plurality of pins (not shown). When attached, the internal gear G ₁ has a structure that does not come off with respect to the bearing 56. Note that, in FIGS. 8 and 9, 61 and 62 indicate tension chain gears for applying tension to the endless chains 53 and 54, respectively.

_{A spur gear G 2} is concentrically and integrally attached to the rear end of the cutter drive shaft 42 (the end opposite to the end to which the disc cutter K is attached). The spur gear G ₂ meshes with the internal gear G ₁ to form a planetary gear mechanism SP ₁ . As a result, when the revolution drive shaft 43 is driven and rotated clockwise when viewed from the back side (the side opposite to the disk cutter K) due to the drive rotation of the output shaft 32, the cutter drive shaft 42 becomes the revolution drive shaft 43. A clockwise rotation (circular motion) of a radius corresponding to the _{eccentricity (e 1} ) is performed around the axis C _0. In FIG. 9, R is a revolution locus circle showing the revolution locus of the axis Ce of the cutter drive shaft (rotation drive shaft) 42. The reason why the revolution drive shaft 43 for revolving the cutter drive shaft 42 is provided is that the disk cutter K that rotates while revolving (circular motion or eccentric rotation) with respect to _{the axis C 0 of the revolution drive shaft 43} In order to exert the "cutting action" described later, the work W is rotated in the same direction as the revolution drive shaft 43, and the work W is moved from above to below by the revolution of the entire disk cutter K. This is because it is necessary to cut with "down cut". Further, the planetary gear mechanism SP _{1 is provided in order to decelerate the spur gear G 2} that revolves with respect to _{the axis C 0} of the revolution drive shaft 43 to drive and rotate it. Further, the internal gear G ₁ constituting the planetary gear mechanism SP ₁ is driven and rotated. If the internal gear G ₁ is fixed, the spur gear G ₂ that revolves is in the rotation direction of the revolving drive shaft 43. Because it rotates in the opposite direction to the above, the entire disk cutter K revolves in the "upcut direction", making it impossible to cut the work W by "downcut" while moving from above to below. This is because, in order to avoid this, it is necessary to drive and rotate _{the internal gear G 1} in the direction in which the spur gear G _{2 is to be rotated.}

Here, the planetary gear mechanism SP ₁ decelerates the rotation of the output shaft 32 and transmits it to the disk cutter K, so that the disk cutter K rotating in the downcut direction and the revolution drive shaft 43 rotate in the same direction. Explain that. For convenience, the number of teeth of the chain gear S ₁ and S ₃ is assumed to be the same, the number of teeth of the _{chain gear S 2} is assumed to be (1/2) _{of the same S 4 , and the internal gear G 1} and the internal gear G 1 and the same are assumed. The number of teeth of the spur gear G ₂ is 50 and 30, respectively.
(A) When the chain gear S ₂ is non-rotating and the chain gear S ₁ makes one rotation clockwise when viewed from the back side as shown in FIG. 9, the spur gear G ₂ is directly meshed with the internal gear G _{1. , The spur gear G 2} rotates counterclockwise (50/30) and one rotation clockwise due to one revolution in the clockwise direction, so that the spur gear G 2 rotates counterclockwise [(50/30) -1. ] = (20/30) Rotate.
(B) When the chain gear S ₁ is non-rotating and the chain gear S ₂ makes one rotation clockwise when viewed from the back side, the spur gear G ₂ rotates clockwise (25/30).
(C) When the _{output shaft 32 to which the chain gears S 1} and S ₂ are attached makes one rotation, the rotation speed of the spur gear G ₂ may be the combination of the two different phenomena of A and B described above. It becomes a street.
Therefore, the spur gear G ₂ rotates in the "clockwise direction", which is the downcut direction of the disk cutter K, when viewed from the back side by [(25/30)-(20/30)] = (1/6). To do.
As a result, under the above setting conditions, the disk cutter K makes one rotation while the revolution drive shaft 43 makes six rotations, and the disk cutter K revolves only six times during one rotation.

In order to cut the flat plate-shaped work W fixed to the work table 2 by using the cutting unit U according to the present invention, the endless chain 21 is revolved around the endless chain 21 by _{the drive motor M 2 and the plate-shaped work W is revolved along the support frame 3.} The cutting unit U is driven at a set speed, and the disk cutter K incorporated in the cutting unit U drives and rotates (rotates) in the downcut direction while revolving with respect to _{the axis C 0 of the revolution drive shaft 43.} As a result, the work W is intermittently cut.

Next, the cutting principle of the disk cutter K will be described with reference to FIGS. 11-A to 11-F. Here, a foamed resin is used as the work W, and as a setting condition for cutting, the revolution drive shaft 43 rotates 6 times, so that the spur gear G ₂ , that is, the disk cutter K makes one rotation, and other setting conditions. Is as follows. In FIGS. 11-A to 11-F, C ₀₀ and C ₀₁ indicate the center of each revolution of the disk cutter K, and Ce ₁ is the "" of one revolution of the disk cutter K. The center position of the disk cutter K in the _{"origin position" is shown, and Ce 2 to Ce 4} indicate the center position of the disk cutter K in a state where the disk cutter K revolves by 90 ° from the "origin position". ..
・ Outer diameter of disk cutter: 450 mm
・ Eccentricity of disk cutter: 20 mm
・ Feed of disk cutter: 24 mm with one revolution of disk cutter
-Work plate thickness: 100 mm

Then, the disk cutter K is moved by the above feed to move the disk cutter K, and the center Ce ₁ of the disk cutter K is arranged at the highest position which is the "origin position" (FIG. 11-A). ), When the disk cutter K revolves _{about 90 ° around the center of revolution C 00} , the disk cutter K moves downward as a whole while down-cutting, so that the disk cutter K moves downward. While the center Ce ₂ of the center moves forward, the work W is largely cut in synergy with the “rotary cutting action” and the “ta cutting action” (FIG. 11-B). Next, when the disk cutter K revolves about 90 ° around the _{center of revolution C 00 , the center Ce 2} of the disk cutter K reaches the lowest position, and in the meantime, the disk cutter K The lower part of the work W is slightly cut (FIG. 11-C). _{When the disk cutter K revolves about 90 ° around the revolution center C 00} with the disk cutter K arranged at the lowest position, the disk cutter K revolves with respect to the cut end surface Wa of the work. When the disk cutter K revolves by another 90 ° after retreating to the maximum (Fig. 11-D), the disk cutter K revolves at a new "origin" which is the highest position with respect to the _{new revolution center C 01.} It is placed in the "position" (Fig. 11-E). In this way, from the state of being arranged at the lowest position due to the revolution of the disk cutter K, after retreating to the maximum with respect to the cut end surface Wa of the work, a new "origin position" is established while advancing with respect to the cut end surface Wa. While the disk cutter K is rotating, the work W is not cut. Then, when the disk cutter K revolves by 90 ° from the new "origin position", cutting by the next revolution is started (FIG. 11-F). _{The center of revolution C 00} (C ₀₁ ) for each revolution of the disk cutter K also naturally moves at the feed rate of the disk cutter K.

Further, while the disk cutter K makes one rotation, the disk cutter K revolves about the axis C ₀₀ (C ₀₁ ) of the revolution drive shaft 43 a total of 6 times, so that the disk cutter K revolves a total of 6 times. A total of 6 cuts are performed by one rotation of K.

Here, the rotation speed of the output shaft 32 of the speed reducer 31 is set to 480 rpm, and the feed rate of the disk cutter K when the disk cutter K moves 24 mm in one revolution is obtained. Chain gear S ₁ and the S ₃ are the same number of teeth, the rotation speed of the revolution drive shaft 43 is the same as the output shaft 32. The rotation speed of the spur gear G ₂ , that is, the rotation speed of the disk cutter K is (1/6) of the rotation speed of the revolution drive shaft 43, so it is 80 rpm, which is the revolution speed of the disk cutter K for 1 minute. Is (80 × 6) = 480 times. Since the disk cutter K is fed by 24 mm in one circular motion, it is fed by (480 × 24) mm = 11.52 m in one minute. That is, the feed rate of the disk cutter K is 11.52 m / min.

As described above, while the disc cutter K makes one rotation, the entire disc cutter K moves from the upper side to the lower side by the revolution movement while the disc cutter K rotates in the downcut direction. A "cutting action" occurs, and the synergistic effect of the "cutting action" and the original "rotary cutting action" dramatically increases the cutting force on the work W. Further, while continuously rotating around the cutter drive shaft (rotation drive shaft) 42, the cutter drive shaft 42 revolves around the axis C ₀ (C ₀₀ , C ₀₁ ) of the revolution drive shaft 43. A line segment connecting the entire disk cutter K while moving from above to below, and connecting the axis Ce of the cutter drive shaft 42 and the axis C ₀ (C ₀₀ , C _{01) of the revolution drive shaft 43.} When becomes horizontal, the entire moving direction of the disk cutter K becomes instantaneously perpendicular to the work W, and an excessive cutting force is generated, and this excessive cutting force also causes the disk cutter K. Contributes to dramatically increasing the cutting power of the. Further, since the work is cut by the sharp blade portion on the outer peripheral portion of the disk cutter K, the work can be cut without generating chips.

Here, the feed rate of the disk cutter K, that is, the feed rate of the cutting unit U can be realized by changing the rotation speed of the _{drive motor M 2 that orbits the endless chain 21.} Depending on the plate thickness, it is necessary to adjust the number of revolutions of the disk cutter K with respect to one rotation of the disk cutter K. For example, when the feed speed is constant and the work W is made of a relatively hard material, the number of revolutions of the disk cutter K with respect to one rotation of the disk cutter K is increased to increase the number of revolutions of the disk cutter K. It is necessary to reduce the amount of work W cut for one revolution of K, and conversely, when the work W is made of a relatively soft material, the disk cutter K for one rotation of the disk cutter K By reducing the number of revolutions of the disk cutter K and increasing the cutting amount of the work W for one revolution of the disk cutter K, the work W can be cut efficiently.

Revolution number of changes to one rotation of the disc cutter K is, in the above embodiment, it is possible by changing the number of the teeth of the sprocket wheel S ₁ to S _4, for this purpose, the sprocket wheels S ₁ to S _It is necessary to change a specific chain gear out of 4, and this work is extremely troublesome and impractical. Therefore, as shown in FIG. 12, the front and rear plates 35'and 36'are driven by separate variable speed drive motors M ₁₁ and M _{12 at predetermined intervals along the traveling direction of the cutting unit U.} and supports the two output shafts 63 and 64, a sprocket wheel S ₁ attached to the output shaft 63, Mutankusari 53 'is hooked into the chain gear S ₃ attached to the revolution drive shaft 43, another _{When the endless chain 54'is mounted on the chain gear S 2} attached to the output shaft 64 and the chain gear S ₄ integrally attached to the internal gear G ₁ , separate variable speed drive motors M _{By arbitrarily changing the number of rotations of 11} and M _12, the number of revolutions of the disk cutter K per rotation can be freely changed. In FIG. 12, 65 and 66 indicate the speed reducers of the _{variable speed drive motors M 11} and M _{12, respectively.}

Next, with reference to FIGS. 13 and 14, only the principle of the cutting mechanism using _{another planetary gear mechanism SP 2 will be described.} The cutter drive shaft (rotation drive shaft) 72 is rotatably supported by the revolution drive shaft 71 supported by the front and rear plates 35 and 36 by the amount of eccentricity (e ₁ ), and the front end of the cutter drive shaft 72. A disc cutter K is attached to the portion, and an internal gear G ₃ is concentrically integrated with the cutter drive shaft 72 via a plurality of bolts 74 at the rear end portion via a flange plate portion 73. It is attached to. The rear plate 36, the first ring member 75 is the axis with the C ₀ 'and concentric revolution drive shaft 71 is fixed via a plurality of bolts 76, to the first ring member 75 is the same shape The second ring body 77 is fixed to the second ring body 77 via a plurality of bolts 78, and the spur gear fixing plate 82 is fixed to the second ring body 77 via a plurality of bolts 81. The spur gear G ₄ meshed with the internal gear G ₃ is fixed to the spur gear fixing plate 82 from the back surface side thereof via a plurality of bolts 83, so that the spur gear G ₄ is the rear plate 36. It is placed in a fixed state. Axis spur gear G ₄ are the same as the axial center C ₀ of the revolution drive shaft 71 '. _{An endless chain 85 is mounted on the chain gear S 5} attached to the drive shaft 84 of the drive motor M ₁₃ and the chain gear S ₆ attached to the revolution drive shaft 71 to drive the revolution drive shaft 71. It is rotated.

When the cutter drive shaft 72 is revolved by the drive rotation of the revolution drive shaft 71, the internal gear G ₃ integrally attached to the cutter drive shaft 72 is in a state of being meshed with the spur gear G _{4, and the revolution drive shaft} By revolving around the axis C _0'of 71, the disk cutter K attached to the tip of the cutter drive shaft 72 revolves around the axis C 0'of the revolving drive shaft 71, and revolves around _{the axis C 0'.} It rotates in the same direction as the drive shaft 71 and intermittently cuts the work W. Note that in FIG 14, R ₂ is the revolution of the axis C ₀ of the revolution drive shaft 71 'eccentricity around the the (e ₂₎ a circle whose radius, the axis Ce of the cutter drive shaft 72' It is a locus circle.

Assuming that the internal gears G ₃ and the spur gear S ₄ constituting the planetary gear mechanism SP ₂ have A ₁ and A ₂ , respectively, when the revolution drive shaft 71 makes one rotation, the cutter drive shaft 72 becomes (A ₂ / A). _{Only 1} ) is decelerated and rotated in the same direction as the revolution drive shaft 71.

C ₀ : Center of revolution drive shaft (center of revolution)
Ce: Axle of cutter drive shaft (rotation drive shaft) e ₁ , e ₂ : Eccentricity of cutter drive shaft (rotation drive shaft) G ₁ , G ₃ : Internal gear G ₂ , G ₄ : Spur gear R ₁ , R ₂ : Revolving locus circle of the axis of the cutter drive shaft SP ₁ , SP ₂ : Planetary gear mechanism
U: Cutting unit
W: Work
Wa: Cut end face of workpiece 42, 72: Cutter drive shaft (rotation drive shaft)
43, 71: Revolution drive shaft

Claims (5)

A device that cuts the work by relatively linearly moving the cutting unit on which the disk cutter is supported and the plate-shaped work.
The cutting unit is
The rotation drive shaft to which the disk cutter is integrally attached to one end in the axial direction is supported by being eccentrically supported by a predetermined amount of eccentricity with the revolution drive shaft to be driven and rotated.
The spur gear integrally attached to the other end of the rotation drive shaft becomes concentric with the revolution drive shaft and meshes with an internal gear that is driven and rotated independently of the disk cutter to drive the revolution. A planetary gear mechanism that drives and rotates the rotation drive shaft while revolving the rotation drive shaft around the axis of the shaft is configured.
The disc cutter is continuously driven by the drive rotation of the revolution drive shaft and the internal gear, and the disk cutter is continuously driven and rotated while making a circular motion by the revolution with respect to the axis of the revolution drive shaft and the internal gear. A plate-shaped work cutting device characterized in that the work is cut by a synergistic effect of the original rotary cutting action due to rotation and the cutting action generated by the circular motion of the disk cutter. The plate-shaped workpiece cutting device according to claim 1 , wherein the revolution drive shaft and the rotation drive shaft are driven by individual variable speed drive motors. A device that cuts the work by relatively linearly moving the cutting unit on which the disk cutter is supported and the plate-shaped work.
The cutting unit is
The rotation drive shaft to which the disk cutter is integrally attached to one end in the axial direction is supported by being eccentrically supported by a predetermined amount of eccentricity with the revolution drive shaft to be driven and rotated.
The internal gear integrally attached to the other end of the rotation drive shaft is meshed with a spur gear fixed to the frame of the cutting unit to drive the rotation around the axis of the rotation drive shaft. A planetary gear mechanism that drives and rotates the rotation drive shaft while revolving the shaft is configured.
Due to the drive rotation of the revolving drive shaft, the disk cutter continuously drives and rotates while making a circular motion by revolving with respect to the axis of the revolving drive shaft, whereby the original rotation cutting action due to the continuous drive rotation of the disk cutter A plate-shaped work cutting device characterized in that the work is cut by synergistic effect with the cutting action generated by the circular motion of the disk cutter. The work table on which the work is fixedly arranged is provided with a cutter support frame that movably supports the cutting unit.
The cutting unit guided by the linear guide provided on the side surface of the cutter support frame becomes movable by being connected in the middle of the endless chain stretched along the moving direction of the cutting unit. Ori,
The first to third aspects of claim 1 to 3, wherein the cutting unit moves at a set speed and cuts a work fixedly arranged on the work table by driving the endless chain and traveling around. The plate-shaped workpiece cutting device according to any one. The work table is characterized in that a cutter anti-vibration member is arranged on the work table to prevent lateral vibration by allowing the blade portion on the outer periphery of the lower end of the disk cutter of the cutting unit to enter in a non-contact state. 4. The plate-shaped work cutting device according to 4.

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