JP4209911B2 - Cast product surplus part cutting device - Google Patents

Description

  The present invention relates to an apparatus for cutting a gate and a weir protruding from the surface of a casting.

  Regarding the proposal using a circular saw cutting machine among the devices for removing the sprue remaining in the casting taken out from the casting mold, [IPC = B22D31 / 00 * (B23D45 / + B23D47 /) ... B22D31 / 00; removal of excess material in metal casting, B23D45 /; saws or devices thereof with circular saws or friction saws, B23D47 /; saws with circular saws characterized only by the construction of special parts The patent information was searched using the search expression “panel or device”, and the following 11 patent documents were found.

  The cutting device of Patent Document 1 (Japanese Patent Laid-Open No. 59-209718) is provided with a rotatable saw that is rotatable below a fixed surface plate (see FIG. 2A).

  The cutting device of Patent Document 2 (Japanese Patent Application Laid-Open No. 60-191721) has a structure in which a cutter and a motor are provided on a shaft head for dam cutting and moved using a ball screw and a cylinder (FIG. 2B). reference.).

  The cutting device of Patent Document 3 (Japanese Patent Laid-Open No. 5-84562) is provided with two circular saws that move up and down (see FIG. 2C).

  The cutting device of Patent Document 4 (Japanese Patent Application Laid-Open No. 5-212613) includes a circular saw attached to a rotating arm member (see FIG. 2D).

  The cutting device disclosed in Patent Document 5 (Japanese Utility Model Laid-Open No. 6-5757) includes a circular saw that can be moved up and down and is driven to rotate about a horizontal rotation shaft (see FIG. 2E). .

  The cutting device disclosed in Patent Document 6 (Japanese Patent Laid-Open No. 6-210439) is configured so that the rotary blade can be moved obliquely downward from the A position to the B position (see FIG. 2 (F)).

  The cutting device disclosed in Patent Document 7 (Japanese Patent Laid-Open No. 7-1226) includes a rotary table capable of arbitrarily rotating a product, a cutting unit having a φ500 tip saw and a driving motor for cutting a feeder, and a cutting unit. An X-axis motor, a Y-axis motor, and a Z-axis motor are configured by a control unit of the apparatus (see FIG. 3A).

  The cutting apparatus disclosed in Patent Document 8 (Japanese Patent Laid-Open No. 7-60537) rotates a work set on a horizontal rotating plate by 90 degrees and cuts the gate with a rotating cutter (FIG. 3B). reference.).

  The cutting device of Patent Document 9 (Registration No. 3082205) is to rotate a diamond tip saw at a high speed of 3000 to 3600 rpm (see FIG. 3C).

  The cutting device of Patent Document 10 (Japanese Patent Laid-Open No. 2001-341053) uses a robot arm (see FIG. 3D).

  The cutting device of Patent Document 11 (Japanese Patent Laid-Open No. 2003-103415) is a device similar to Patent Document 9 that rotates a tip saw at a high speed of 6000 rpm to 8000 rpm.

  In addition, when searching patent information with a search expression [IPC = (B23D45 / + B23D47 /) * summary or claims = pocket], the following two patent documents other than the above could be found: .

  The cutting device disclosed in Patent Document 12 (Japanese Utility Model Publication No. 6-80517) includes two rotary cutting blades that swing around two swinging shafts extending in the front-rear direction (FIG. 3E). reference.).

The cutting device disclosed in Patent Document 13 (Toshimi-3701699) has a built-in tip saw that can be rotated and moved up and down, a drive member that provides this rotation and up and down movement is located outside, and has an opening in a side wall. A tip saw box and a base plate that is installed outside the tip saw box and is reversibly mounted on the opening side, and clamps a workpiece to which unnecessary materials are attached to the surface. The base plate is reversed and comes into contact with the chip saw box. When the opening is closed and the tip saw box is used as a sealed chamber, the workpiece is placed in this sealed chamber, and the waste material attached to the workpiece is cut and removed by the tip saw by moving the rotated tip saw downward. (See FIG. 3F.)
JP 59-209718 JP-A-60-191721 Japanese Patent Laid-Open No. 5-84562 JP-A-5-212613 Japanese Utility Model Publication No. 6-5757 JP-A-6-210439 Japanese Patent Laid-Open No. 7-1226 Japanese Patent Laid-Open No. 7-60537 Tomi-3308205 publication JP 2001-341053 A JP 2003-103415 A Japanese Utility Model Publication No. 6-80517 Tomi-3071699

  However, for example, the device of Patent Document 1 has a problem that cutting waste falls on the movable part of the circular saw, and the devices of Patent Document 3 and Patent Document 12 have a problem in including two circular saws. The conventional technology has not been sufficient. In addition, since the gate is removed by cutting in the vertical direction, as shown in FIG. 4 (A), when cutting while lowering the cutting machine, the excised gate becomes a lower gate. There is a possibility of scattering by collision, and in some cases scratching the workpiece. Conversely, as shown in FIG. 4B, when cutting while raising the cutting machine, the cut gate may collide with the cutting machine itself and damage the cutting machine.

  Then, an object of this invention is to provide the cast part surplus part cutting device of a novel structure which does not damage a workpiece | work and a cutting machine.

The cast product surplus part cutting device of the present invention made to achieve such an object is a device that cuts off the sprue and weir of the surplus part formed on the specific end surface of the cast workpiece using a circular saw, The following configuration is adopted.
(1-1) Provide a guide rail that is horizontally installed downward and upward.
(1-2) An upper surface portion, a side surface portion extending downward from the upper surface portion, and a bottom surface portion extending horizontally from a lower portion of the side surface portion, and a rail receiving portion formed on the upper surface portion being slid on the guide rail. It must have a movable body that is movably fitted and installed in a suspended state.
(1-3) A travel drive mechanism that travels the moving body along the guide rail is provided.
(1-4) On the bottom surface of the movable body, a saw rotating shaft for mounting a circular saw is installed vertically upward, and a motor for driving the saw rotating shaft is mounted on the saw rotating shaft. Installed at a position that does not interfere with the saw blade.
(1-5) Within the range where cutting is possible with a circular saw mounted on the saw rotating shaft when the casting is made to move in a horizontal direction along the guide rail with the specific end face facing down. A workpiece downward setting device is set so that the root of the surplus part becomes the cutting height.

  According to the cast product surplus part cutting device of the present invention, the circular saw is mounted on a saw rotating shaft erected vertically upward, and rotates in a horizontal plane. On the other hand, the cast workpiece is set with the surplus portion facing downward. Therefore, the cut surplus part falls without colliding with other parts of the workpiece or colliding with the rotary shaft of the circular saw. Moreover, since the structure which not only made it possible to cut | disconnect in a horizontal direction but also installed the guide rail in the ceiling part is employ | adopted, the malfunction that cutting waste clogs in a guide rail does not generate | occur | produce.

  Note that a screw feed mechanism may be employed as the travel drive mechanism, and the screw shaft of the screw feed mechanism may be installed upward in parallel with the guide rail. In addition, when a plurality of guide rails are provided, the stability during traveling is increased. In particular, the fitting type of the guide rail and the rail receiving portion functions effectively in improving the running stability.

Here, in the cast product surplus part cutting device of the present invention, the workpiece downward setting device may be configured as follows.
(2-1) A work installation plate that rotates about a support shaft supported in parallel with the direction in which the guide rail extends is provided.
(2-2) The workpiece installation plate includes a clamp device for fixing the cast workpiece on the surface side near one end, and also fixes the cast workpiece on the back side of the other end. A clamping device.
(2-3) The clamp devices at both ends are provided so that the clamp device located on the circular saw side faces downward when the workpiece setting plate is rotated to a horizontal position.

  By adopting such a configuration, the work set can be operated so as to be placed on the upper surface of the end portion rotated to the horizontal position on the side opposite to the circular saw. And when the excision of the surplus part of the previous work is completed, the next work can be quickly set to the cutting position, the work that has been excised from the surplus part during cutting, and the next work is set. The procedure is improved. Since the work attachment and detachment work can be performed at a position sufficiently away from the circular saw on the upper surface side of the work installation plate functioning as a horizontal work table, workability is improved in that sense.

  If the rotation range of the workpiece setting plate and the moving range of the moving body are not overlapped, the workpiece setting plate can be immediately rotated to prepare for the next operation as long as a circular saw is used. . Further, since it is not necessary to completely escape the moving body, the entire apparatus does not become too large. Also, a cutter that rotates in the reverse direction to slightly lift the circular saw side of the workpiece installation plate so that the circular saw tip does not hit the workpiece in the return movement after cutting with the circular saw is completed It is good to have a relief function.

  According to the present invention, a surplus portion such as a sprue or a weir can be cut from a cast product without damaging a workpiece or a cutting machine, and cutting scraps are clogged with respect to a guide rail of a moving body. There is no problem, and it is possible to efficiently and accurately carry out the excessive part excision work.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. As shown in FIG. 1, a cast product surplus part cutting device 1 as an embodiment is a device that uses a circular saw 3 to cut off a surplus portion W1 that is projected and formed on a specific end surface of a cast workpiece W. It features the following configuration.

  First, as a first feature, as shown in FIG. 1 (A), two guide rails 11 and 12 are installed downward on the lower surface of the beam member 4 on the ceiling of the apparatus. Thus, in the cast product surplus part cutting device 1 of the embodiment, a configuration of “(1-1) including a guide rail installed horizontally downward and upward” is employed.

  Secondly, guide rail receivers 21 and 22 fitted to the guide rails 11 and 12 are provided, and the upper surface portion 23, the side surface portions 24 and 25 extending downward from the upper surface portion 23, and the lower ends of the side surface portions 24 and 25 are horizontally disposed. The movable body 20 is provided with a bottom surface portion 26 connected to the bottom. Thus, the cast product excess part cutting device 1 of the embodiment includes “(1-2) a top surface part, a side surface part extending downward from the top surface part, and a bottom surface part extending horizontally from the bottom part of the side surface part. The rail receiving portion formed on the upper surface portion is slidably fitted to the guide rail and provided with a movable body installed in a suspended state.

  Third, a screw shaft 31 extending parallel to the guide rails 11 and 12 is installed between the two guide rails 11 and 12, and a ball screw 32 that engages with the screw shaft 31 is fixed to the upper surface portion 23 of the moving body 20. It is. Thus, the cast product surplus part cutting device 1 according to the embodiment employs a configuration of “(1-3) including a travel drive mechanism for causing the movable body to travel along the guide rail.” .

  Fourth, on the upper surface of the bottom surface portion 26 of the moving body 20, a saw rotating shaft 41 for mounting the circular saw 3 is installed vertically upward, and a motor 42 for driving the saw rotating shaft 41 is rotated by a saw. It is installed at a position where it does not interfere with the blade of the circular saw 3 mounted on the shaft 41. The power of the motor 42 is transmitted through a gear in a gear box 43 attached to the lower surface of the bottom surface portion 26. Therefore, only the saw rotating shaft 41 and the motor 42 are exposed on the upper surface side of the bottom surface portion 26, and the gear is not exposed. Thus, in the cast product surplus part cutting device 1 of the embodiment, “(1-4) A saw rotating shaft for mounting a circular saw is installed vertically upward on the bottom surface of the moving body, and the saw A configuration is adopted in which a motor for driving the rotary shaft is installed at a position where it does not interfere with a circular saw blade mounted on the saw rotary shaft.

  Fifth, a workpiece downward setting device 50 having the following configuration is installed on the front portion (left side in the figure) of the device.

  First, a work installation plate 52 that rotates around a support shaft 51 that is parallel to the direction in which the guide rails 11 and 12 extend is provided. The workpiece setting plate 52 includes a clamp device 54 for fixing the cast workpiece W to the front surface 53 side near the left end and the back surface 55 side near the right end in a state where the workpiece installation plate 52 is rotated to the horizontal position as shown in the figure. In addition, a clamp device 56 for fixing the cast workpiece W is provided. Then, as shown in the figure, in the state where the workpiece setting plate 52 is horizontally rotated and stopped, the cast workpiece W on the circular saw 3 side has the surplus portion W1 facing downward and is within a range that can be cut by the circular saw 3. In this state, the root of the surplus portion W1 is set to have a cutting height.

  Thus, in the cast product surplus part cutting device 1 according to the embodiment, “(1-5) When the movable body travels in the horizontal direction along the guide rail with the specific workpiece facing downward. The work downward setting device is set so that the root of the surplus portion is set to the cutting height within the cuttable range of the circular saw mounted on the saw rotating shaft of “(2- 1) It is provided with a work installation plate that rotates around a support shaft that is supported in parallel with the direction in which the guide rail extends. ”,“ (2-2) The work installation plate is located near one end. A clamp device for fixing the cast workpiece is provided on the front surface side, and a clamp device for fixing the cast workpiece is also provided on the back surface side of the other end. ”And“ (2-3) The both ends The clamping device is provided with a more specific configuration that the clamping device located on the circular saw side faces downward when the workpiece setting plate is rotated to a horizontal position. " ing.

  According to the cast surplus part cutting device 1 of the embodiment adopting such a configuration, the circular saw 3 is mounted on the saw rotating shaft 41 erected vertically upward and rotates in a horizontal plane. On the other hand, the cast workpiece W is set with the surplus portion W1 facing downward. Therefore, the cut surplus portion W1 falls without colliding with other portions of the workpiece W or colliding with the saw rotating shaft 41 of the circular saw 3. Further, since the guide rails 11 and 12 and the ball screw mechanisms 31 and 32 are installed on the ceiling portion, the cutting scraps are clogged in the guide rail and the ball screw mechanism. Such a problem does not occur.

  Further, as an effect peculiar to the embodiment, the guide rails 11 and 12 and the rail receiving portions 21 and 22 are of a fitting type, the two guide rails 11 and 12 having the same height and parallel, and the guide rails 11 and 12 The horizontal height and the moving direction are firmly guided by the screw shaft 31 extending horizontally in parallel with the guide rails 11 and 12 at the center of the distance between High stability.

  Further, the work W can be set so as to be placed on the upper surface of the end portion of the work installation plate 52 rotated to the horizontal position on the side opposite to the circular saw 3. Then, when the excision of the surplus portion W1 of the previous work W is completed, the next work W can be quickly set to the cutting position, and the surplus part excised work W is removed during the cutting and the next work W is set. As a result, the work procedure is improved. Since the work W can be attached and detached at a position sufficiently away from the circular saw 3 on the upper surface side of the work installation plate 21 that functions as a horizontal work table, workability is improved in that sense.

  In addition, as shown in the figure, since the rotation range of the workpiece setting plate 21 and the moving range of the moving body 20 are not overlapped, the workpiece setting plate 22 is immediately rotated as long as the circular saw 3 is used. Can prepare for the next task. In addition, since it is not necessary to completely escape the moving body 20, the entire apparatus does not become too large.

  In the present embodiment, the circular saw 3 tip is not contacted with the workpiece W in the return movement after the cutting by the circular saw 3 is completed, as shown by a one-dot chain line in FIG. A cutter relief function is provided to perform a rotating operation in the reverse direction so as to slightly raise the saw side.

  As explained above, according to the cast product surplus part cutting device 1 of the embodiment, it is possible to cut off surplus parts such as gates and weirs from the cast product without damaging the workpiece and the cutting machine, A new problem such as clogging of cutting scraps with respect to the guide rail of the moving body does not occur, and it is possible to efficiently and accurately carry out the excessive portion cutting operation.

  As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that various deformation | transformation implementation is possible for this invention in the range which is not restricted to this embodiment and does not deviate from the summary.

The cast product surplus part cutting device of an embodiment is shown, (A) is a side view and (B) is a top view. It is explanatory drawing which showed patent documents 1-6. It is explanatory drawing which showed patent documents 7-13. It is explanatory drawing which showed the trouble of the prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cast product surplus part cutting device W ... Work W1 ... Surplus part 3 ... Circular saw 4 ... Beam member 11,12 ... Guide rail 20 ... Moving body 21,22 ... Guide rail holder 23 ... Top part 24,25 ... Side part 26 ... Bottom part 31 ... Screw shaft 32 ... Ball screw 41 ... Saw rotary shaft 42 ... Motor 43 ... Gearbox 50 ... Work downward setting device 51 ... Support shaft 52 ... Work installation plate 53 ... Front surface 54 ... Clamping device 55 ... Back surface 56 ... Clamping device

Claims (2)

An apparatus for cutting a surplus portion of a cast product, which is a device that cuts off a sprue and a weir of a surplus portion formed on a specific end surface of a cast workpiece using a circular saw, and has the following configuration.
(1-1) Provide a guide rail that is horizontally installed downward and upward.
(1-2) An upper surface portion, a side surface portion extending downward from the upper surface portion, and a bottom surface portion extending horizontally from a lower portion of the side surface portion, and a rail receiving portion formed on the upper surface portion being slid on the guide rail. It must have a movable body that is movably fitted and installed in a suspended state.
(1-3) A travel drive mechanism that travels the moving body along the guide rail is provided.
(1-4) On the bottom surface of the movable body, a saw rotating shaft for mounting a circular saw is installed vertically upward, and a motor for driving the saw rotating shaft is mounted on the saw rotating shaft. Installed at a position that does not interfere with the saw blade.
(1-5) Within the range where cutting is possible with a circular saw mounted on the saw rotating shaft when the casting is made to move in a horizontal direction along the guide rail with the specific end face facing down. A workpiece downward setting device is set so that the root of the surplus part becomes the cutting height. 2. The cast product surplus partial cutting device according to claim 1, wherein the workpiece downward setting device has the following configuration.
(2-1) A work installation plate that rotates about a support shaft supported in parallel with the direction in which the guide rail extends is provided.
(2-2) The workpiece installation plate includes a clamp device for fixing the cast workpiece on the surface side near one end, and also fixes the cast workpiece on the back side of the other end. A clamping device.
(2-3) The clamp devices at both ends are provided so that the clamp device located on the circular saw side faces downward when the workpiece setting plate is rotated to a horizontal position.

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