JP2017019033A - Blade holding jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach and detach a cutting blade to/from a flange without damaging the cutting blade when attaching the cutting blade to a spindle.SOLUTION: A blade holding jig 5A used for attaching and detaching an annular blade 31 to/from a mount flange 32 comprises: a pair of holding plates 50; a pair of grip parts 52 which are connected to each other via a connecting member 51; and an elastic member 53 which opens a pair of the holding plates 50 when gripping a pair of the grip parts 52, and closes a pair of the holding plates 50 when releasing a pair of the grip parts 52. The holding plate 50a (50b) is formed into a C-shape having an inside diameter 2R2 which is not smaller than a diameter 2R1 of an internal periphery of the annular blade 31, and having a notch 500 (510) at an external periphery.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a blade clamping jig used when a cutting blade is attached and detached in a cutting apparatus.

  In a cutting apparatus that performs cutting by cutting a rotating cutting blade into a workpiece, a flange is attached to the tip of a rotatable spindle, and the cutting blade is detachable from the flange. For example, the cutting blade is mounted on the spindle of the cutting apparatus while being sandwiched from both sides in the thickness direction by a front flange (fixed flange) and a rear flange (mount flange) (see, for example, Patent Document 1).

Japanese Patent No. 4970188

  When the cutting blade is attached to or detached from the flange mounted on the spindle, the operator grips a part of the cutting blade by hand and performs the attaching / detaching operation on the flange. Therefore, there has been a problem that the cutting blade is damaged depending on the degree of force applied to the cutting blade. In particular, unlike a hub-type cutting blade in which a base and a cutting blade are integrated, a washer-type cutting blade made of an annular grindstone does not have a base and is therefore more likely to break. It was. In addition, in order to prevent the cutting blade from being damaged, there has been a problem that the work efficiency is lowered when the operator carefully attaches and detaches the cutting blade.

  Therefore, when the cutting blade is mounted on the spindle, there is a problem that the cutting blade is easily attached to and detached from the flange without damaging the cutting blade.

In order to solve the above-mentioned problems, the present invention provides a cutting apparatus including a spindle that rotates a cutting blade and a flange that is mounted on the spindle and supports the cutting blade. The annular cutting blade is attached to and detached from the flange. A pair of clamping plates, a pair of gripping portions connected via a connecting member, and a pair of gripping portions that open the pair of clamping plates when the pair of gripping portions are gripped. And an elastic member that closes the pair of clamping plates when the gripping portion is opened, and the clamping plate is formed in a C shape having an inner diameter equal to or larger than the inner diameter of the cutting blade and having a notch on the outer circumference. This is a blade clamping jig.
In this blade clamping jig, the clamping plate is preferably formed in a C shape having an inner diameter equal to or larger than the outer diameter of the flange.

  The blade clamping jig according to the present invention includes a pair of clamping plates, a pair of gripping portions connected via a connecting member, and opening the pair of gripping portions by opening the pair of clamping plates when gripping the pair of gripping portions. Then, it is provided with an elastic member for closing the pair of clamping plates, and the clamping plate is formed in a C shape having an inner diameter equal to or larger than the inner diameter of the cutting blade and having a notch on the outer circumference. The operator can attach and detach the annular cutting blade to and from the flange in a state where the annular cutting blade is stably clamped by the blade clamping jig. Therefore, it is possible to prevent the cutting blade from being damaged when attaching and detaching the blade, and the operator can avoid touching the blade edge when attaching and detaching the blade. It becomes possible.

It is a perspective view which shows the external appearance of the cutting means with which a cutting device is equipped. It is a disassembled perspective view of the cutting means with which a cutting device is equipped. It is a disassembled perspective view of the spindle unit with which a cutting means is equipped. FIG. 4A is a perspective view of the blade clamping jig of the first embodiment. FIG. 4B is a side view of the blade clamping jig of the first embodiment. FIG. 5A is a perspective view of the blade clamping jig of the second embodiment. FIG. 5B is a side view of the blade clamping jig of the second embodiment. FIG. 6A is a perspective view showing a state in which a pair of gripping portions of the blade clamping jig of Embodiment 1 are gripped to open a pair of clamping plates and an annular blade is about to be sandwiched. FIG. 6B is a side view showing a state in which the pair of gripping portions of the blade clamping jig of Embodiment 1 is gripped to open the pair of clamping plates and the annular blade is sandwiched. FIG. 7A is a perspective view showing a state in which the pair of gripping portions of the blade clamping jig of Embodiment 1 is opened to close the pair of clamping plates and the annular blade is sandwiched. FIG. 7B is a side view showing a state in which the pair of gripping portions of the blade clamping jig of Embodiment 1 is opened to close the pair of clamping plates and the annular blade is sandwiched. It is a perspective view which shows the state which clamped the cyclic | annular braid | blade with the braid | blade clamping jig | tool of Embodiment 1, and was attaching / detaching the cyclic | annular braid | blade to the flange. FIG. 9A is a side view showing a state in which the pair of gripping portions of the blade clamping jig of Embodiment 2 is opened to close the pair of clamping plates and the annular blade is sandwiched. FIG. 9B is a side view showing a state in which the pair of gripping portions of the blade clamping jig of Embodiment 2 is opened to close the pair of clamping plates and the annular blade is sandwiched. FIG. 10A is a side view showing a state in which the pair of holding portions of the blade holding jig are opened and the pair of holding plates are opened in the modification of the first embodiment. FIG. 10B is a side view showing a state in which the pair of gripping portions of the blade clamping jig is opened and the pair of clamping plates are closed in the modification of the first embodiment.

  The cutting means 3 provided in the cutting apparatus shown in FIGS. 1 and 2 includes a spindle unit 3A including an annular cutting blade 31 (hereinafter referred to as an annular blade 31), a blade cover 370 that covers the annular blade 31, and a blade cover. A blade detection block 371 attached to 370 and a detachable cover 372 attached to the blade cover 370 are provided.

  As shown in FIG. 2, the blade cover 370 covers the annular blade 31 from the + Z direction. In addition, the blade detection block 371 is screwed into a screw hole 370a provided on the upper surface of the blade cover 370 through a screw 371b through a hole 371a provided on the upper surface of the blade detection block 371, thereby + Z Mounted from the direction. A blade sensor (not shown) composed of a light emitting element and a light receiving element is attached to the blade detection block 371, and the position of the blade sensor in the Z direction can be adjusted by an adjustment screw 371c. The state of the annular blade 31 is detected by this blade sensor.

  The detachable cover 372 is attached to the blade cover 370 from the −Y direction by screwing the screw 372 b through the hole 372 a provided in the side surface thereof and screwing into the screw hole 370 b provided in the Y axis direction side surface of the blade cover 370. It is done.

  Further, one cutting water nozzle 38 for supplying cutting water to the annular blade 31 is provided before and after the annular blade 31 in the Y-axis direction. Each cutting water nozzle 38 communicates with, for example, a cutting water inflow pipe 38a into which the cutting water flows. Each cutting water inflow pipe 38a is supported by a removable cover 372 and a blade cover 370, respectively.

  A spindle unit 3A provided in the cutting means 3 will be described with reference to FIG. The spindle unit 3 </ b> A includes an annular blade 31 and a spindle unit 30.

  The spindle unit 30 includes at least a spindle 300 whose axial direction is the Y-axis direction and which rotates the annular blade 31, and a spindle housing 301 that supports the spindle 300.

  The tip portion of the spindle 300 protrudes from the spindle housing 301 in the −Y direction, and a mounting flange 32 that supports the annular blade 31 can be attached to the protruding portion. A screw hole 300 a is provided at the tip of the spindle 300.

  The mount flange 32 includes a flange portion 320 extending outward in a radial direction (a direction orthogonal to the axial direction of the spindle 300 and the horizontal direction), and a boss formed to protrude from the flange portion 320 in the thickness direction (Y-axis direction). Part 321. The boss portion 321 includes a base portion 321a having a cylindrical shape and a cylindrical portion 321b having a cylindrical shape smaller in diameter than the diameter of the base portion 321a. On the outer periphery of the cylindrical portion 321b, a screw portion 321c into which a ring-shaped fixing nut 34 is tightened is provided. In addition, a fitting hole 322 into which the tip of the spindle 300 can be fitted is formed in the central axis of the mount flange 32 so as to penetrate in the axial direction. If the tip of the spindle 300 is fitted in the fitting hole 322 of the mount flange 32 and the screw 36 is tightened by screwing the washer 35 into the screw hole 300a, the mount flange 32 is fixed and attached to the spindle 300. .

  The annular blade 31 is, for example, an annular washer type cutting blade in which diamond abrasive grains are bonded with a binder, and has a circular mounting hole 31a having a diameter of 2R1 fitted into the base portion 321a at the center. The annular blade 31 is attached to the mount flange 32 by fitting the base portion 321a into the attachment hole 31a and engaging the attachment hole 31a with the outer peripheral surface of the base portion 321a. The diameter 2R1 of the mounting hole 31a is twice the radius R1 of the annular blade 31, and is the diameter of the inner periphery of the annular blade 31. The abrasive grains contained in the annular blade 31 are not limited to diamond abrasive grains, and a resin bond, a vitrified bond, a metal bond, or the like is used as a binder for the annular blade 31.

  The annular blade 31 is formed such that its outer diameter is larger than the outer diameter of the flange portion 320. For this reason, when the annular blade 31 is mounted on the mount flange 32, the outer peripheral portion of the annular blade 31 protrudes radially outward from the outer peripheral edge of the flange portion 320. Further, the diameter 2R1 of the mounting hole 31a is formed to be slightly larger than the diameter 2R3 of the base 321a so that the mounting hole 31a of the cutting blade 31 can be fitted into the base 321a of the mount flange 32. The workpiece is cut by rotating the annular blade 31 and bringing the annular blade 31 protruding from the flange portion 320 into contact with the workpiece.

  In a state where the annular blade 31 is mounted on the mount flange 32, an annular fixing flange 33 is attached to the tubular portion 321b. The fixed flange 33 has an engagement hole 33a corresponding to the cylindrical portion 321b. The diameter 2R4 of the outer periphery of the fixed flange 33 is equal to the diameter of the outer periphery of the flange portion 320 of the mount flange 32. When the fixing flange 33 is attached to the cylindrical portion 321b, the ring-shaped fixing nut 34 is tightened to the screw portion 321c of the cylindrical portion 321b.

  When the fixing nut 34 is tightened into the cylindrical portion 321b, the fixing flange 33 is pressed in the direction of the mount flange 32 (+ Y direction). As a result, the annular blade 31 is clamped and fixed between the mount flange 32 and the fixed flange 33. Since the mount flange 32 is fixed and attached to the spindle 300, when the motor (not shown) rotates the spindle 300, the annular blade 31 sandwiched and supported by the mount flange 32 and the fixed flange 33 rotates as the spindle 300 rotates. To do.

(Embodiment 1)
A blade clamping jig 5A shown in FIGS. 4A to 4B is an embodiment of the blade clamping jig according to the present invention, and the annular cutting blade 31 shown in FIG. It is a jig used when attaching and detaching. The blade clamping jig 5A includes a pair of clamping plates 50, a pair of gripping portions 52 connected via a connecting member 51, and a pair of gripping portions that opens the pair of clamping plates 50 when the pair of gripping portions 52 are gripped. The elastic member 53 which closes a pair of clamping board 50 when 52 is open | released is provided.

  The pair of clamping plates 50 includes a clamping plate 50a and a clamping plate 50b. The sandwiching plate 50a and the sandwiching plate 50b include, for example, a cutout portion 500 (510) formed by partially cutting the outer periphery of an annular steel plate, and are formed in a C shape when viewed from the front side (−Y direction side). The size is the same. The inner diameter 2R2 (not shown in FIG. 4B) of the holding plate 50a (50b) is equal to or larger than the inner diameter 2R1 of the annular blade 31 shown in FIG. The inner diameter 2R2 of the sandwiching plate 50a (50b) is twice the radius R2 of the inner periphery of the sandwiching plate 50a (50b). Further, the sandwiching plate 50a (50b) is not limited to one formed of a steel plate, and may be formed of a resin plate such as an acrylic plate.

  A notch 500 (510) formed by partially cutting the outer periphery of the holding plate 50a (50b) has, for example, a width L1 (not shown in FIG. 4B) of the mount flange 32 shown in FIG. The outer diameter of the flange portion 3203 is 2R4 or more.

  In the blade clamping jig 5A, the pair of gripping parts 52 includes a gripping part 52a and a gripping part 52b. For example, the grip portion 52a (52b) is formed in a flat plate shape so as to protrude outward in the radial direction of the clamping plate 50a (50b) from the outer peripheral portion facing the notch 500 (510) of the clamping plate 50a (50b). Thus, it is formed integrally with the sandwiching plate 50a (50b). And the holding part 52a and the holding part 52b are connected through the connection member 51 in the state which has arrange | positioned so that the direction of the notch part 500 and the notch part 510 may overlap, and the holding board 50b and the holding board 50b are overlapped. ing. In the blade clamping jig 5A, the connecting member 51 is, for example, a hexagonal pin or the like as shown in FIG. 4A, and a gap S shown in FIG. 4B is provided between the gripping portion 52a and the gripping portion 52b. It is arranged to provide. The gap S is a gap that gradually spreads between the sandwiching plate 50a and the sandwiching plate 50b toward the pair of gripping portions 52 when the pair of gripping portions 52 is not gripped. Further, the grip portion 52 a (52 b) is movable in the thickness direction (Y-axis direction) of the grip portion 52 a (52 b) with respect to the connecting member 51.

  The elastic member 53 is, for example, a rubber band, and is disposed on top of the pair of grip portions 52 so as to be wound around the pair of grip portions 52 from the outside.

(Embodiment 2)
A blade clamping jig 5B shown in FIGS. 5A to 5B is an embodiment of the blade clamping jig according to the present invention, and a part of the configuration of the blade clamping jig 5A of the first embodiment is changed. Is. The blade clamping jig 5B includes a pair of clamping plates 50, a pair of gripping portions 52 connected via a connecting member 54, and a pair of gripping portions that opens the pair of clamping plates 50 when the pair of gripping portions 52 are gripped. An elastic member 55 (not shown in FIG. 5B) is provided that closes the pair of clamping plates 50 when 52 is opened. In FIGS. 5A to 5B, the same reference numerals as in FIGS. 4A to 4B are used for the parts configured similarly to the blade clamping jig 5A in FIGS. 4A to 4B. Is attached.

  The connecting member 54 in the blade clamping jig 5B is a bridge material such as steel. The connecting member 54 is joined between the gripping portion 52a and the gripping portion 52b in a state where the sandwiching plate 50a and the gripping plate 50b are arranged so that the orientations of the notch portion 500 and the notch portion 510 are aligned. The grip part 52a and the grip part 52b are connected.

  The elastic member 55 in the blade clamping jig 5B is, for example, a coil spring. The elastic member 55 is disposed below the pair of gripping portions 52 so as to be sandwiched between the gripping portion 52 a and the gripping portion 52 b from the expansion / contraction direction (Y-axis direction) of the elastic member 55. The elastic member 55 is biased in a direction in which the grip portion 52a and the grip portion 52b are separated from each other, and the elastic member 55 is disposed in a form sandwiched between the grip portion 52a and the grip portion 52b. In a state where the grip portion 52 is not gripped, a gap S that gradually widens is provided between the sandwiching plate 50a and the sandwiching plate 50b toward the pair of gripping portion 52 sides.

  Hereinafter, the blade clamping jig 5A when the annular blade 31 is clamped by the blade clamping jig 5A of the first embodiment and attached to the mount flange 32 will be described with reference to FIGS. The operation and mounting method will be described.

  When mounting the annular blade 31, first, as shown in FIG. 2, the cutting means 3 of the cutting apparatus is in a state in which the blade detection block 371 and the detachable cover 372 are removed from the blade cover 370. Further, the fixing nut 34 and the fixing flange 33 are removed from the spindle unit 3A, and the mounting flange 32 (not shown in FIG. 2) mounted on the spindle 300 is exposed by the screw 36, and the annular blade 31 is exposed to the mounting flange 32. Make it ready for wearing.

  After the annular blade 31 can be attached to the mount flange 32, the annular blade 31 is clamped by the blade clamping jig 5A. As shown in FIG. 6A, for example, the operator grips the pair of gripping parts 52 from the outside and applies force until the lower end of the gripping part 52a and the lower end of the gripping part 52b come into contact with each other. Extends in the Y-axis direction. Then, as the elastic member 53 extends in the Y-axis direction, the pair of sandwiching plates 50 opens. In addition, the elastic member 53 accumulates contraction force that closes the pair of sandwiching plates 50.

  With the pair of clamping plates 50 open, the blade clamping jig 5A is brought closer to the annular blade 31 from the notch 500 (510) side, for example, from the −Z direction. 6B, the annular blade 31 is sandwiched between the pair of sandwiching plates 50 so that the annular blade 31 enters the gap S between the sandwiching plate 50a and the sandwiching plate 50b. At this time, the position of the annular blade 31 and the pair of clamping plates 50 is adjusted so that the center of the mounting hole 31a of the annular blade 31 and the center of the pair of clamping plates 50 overlap.

  After the annular blade 31 enters the gap S between the sandwiching plate 50a and the sandwiching plate 50b, as shown in FIGS. 7 (A) and 7 (B), the operator can apply a force to grip the pair of gripping portions 52. When the pair of gripping parts 52 are opened with weakening, the pair of clamping plates 50 are closed by the contraction force stored in the elastic member 53. Then, when the pair of clamping plates 50 are closed, the annular blade 31 is clamped by the blade clamping jig 5A. Here, the sandwiching plate 50a (50b) is formed in a C shape having an inner diameter 2R2 that is equal to or larger than the inner diameter 2R1 of the inner periphery of the cutting blade 31, so that the annular blade 31 is stably formed along the shape of the annular blade 31. Can be pinched.

  In order to attach the annular blade 31 to the mount flange 32, as shown in FIG. 8, the operator holds the blade clamping jig 5A that sandwiches the annular blade 31, and is annular from the axial direction (−Y direction) of the boss portion 321b. The blade 31 is brought close to the mount flange 32. Then, the base portion 321a of the mount flange 32 is fitted into the mounting hole 31a of the annular blade 31, and the mounting hole 31a and the outer peripheral surface of the base portion 321a are engaged.

  Further, in a state where the annular blade 31 is clamped by the blade clamping jig 5 </ b> A, the fixed flange 33 is attached to the cylindrical portion 321 b of the mount flange 32, and the annular blade 31 is clamped between the mount flange 32 and the fixed flange 33. Then, the fixing nut 34 is screwed into the screw portion 321c of the cylindrical portion 321b, and the fixing nut 34 is temporarily tightened.

  With the fixing nut 34 temporarily tightened, the operator grips the pair of gripping portions 52 from the outside and applies a force to open the pair of sandwiching plates 50 to stop the annular blade 31 from being sandwiched by the blade sandwiching jig 5A. Then, the blade clamping jig 5A is detached from the annular blade 31 by lowering the blade clamping jig 5A in the −Z direction, for example. The sandwiching plate 50a (50b) is formed in a C shape having a notch 500 (510) on the outer periphery. For example, the width L1 of the notch 500 (510) is the same as that of the flange 320 of the mount flange 32. Since the outer diameter is 2R4 or more, the blade clamping jig 5A can be easily detached from the spindle unit 3A without being caught by the flange portion 320 and the fixed flange 33. The operator accidentally removes the blade clamping jig 5A and tightens the fixing nut 34 to completely fix the annular blade 31 between the fixing flange 33 and the mount flange 32, and the cutting is performed as it is. Therefore, in order not to forget to remove the blade clamping jig 5A, at least the annular blade 31 is exposed in the blade clamping jig 5A. The position is preferably colored with a conspicuous color such as red.

  After the blade clamping jig 5A is detached from the spindle unit 3A, the fixing nut 34 is further tightened to the screw portion 321c of the cylindrical portion 321b, and the annular blade 31 is clamped and fixed between the mount flange 32 and the fixing flange 33. The annular blade 31 is attached to the mount flange 32. Further, the blade detection block 371 and the detachable cover 372 shown in FIG. 1 are mounted on the blade cover 370 again so that the cutting means 3 can cut the workpiece.

  The operation and removal method of the blade clamping jig 5A when the annular blade 31 is clamped by the blade clamping jig 5A and removed from the mount flange 32 will be described below with reference to FIGS.

  When removing the annular blade 31, first, as shown in FIG. 2, the cutting means 3 of the cutting apparatus 1 is brought into a state where the blade detection block 371 and the detachable cover 372 are removed from the blade cover 370. Further, the fixing nut 34 and the fixing flange 33 are removed from the spindle unit 3 </ b> A so that the annular blade 31 can be removed from the mount flange 32.

  The operator grips the pair of gripping portions 52 of the blade clamping jig 5A shown in FIG. 8 from the outside and applies a force to open the pair of clamping plates 50. Then, the blade clamping jig 5 </ b> A is brought close to the annular blade 31 while facing the notch 500 (510) side from the −Z direction, for example, and the annular blade 31 is sandwiched between the pair of clamping plates 50. At this time, the annular blade 31 and the blade clamping jig 5A are aligned with each other so that the center of the mounting hole 31a of the annular blade 31 and the center of the pair of clamping plates 50 overlap.

  After the annular blade 31 is sandwiched between the pair of sandwiching plates 50, the gripping force of the pair of gripping portions 52 is weakened, the pair of gripping portions 52 are opened, the pair of sandwiching plates 50 are closed, and the annular blade 31 is sandwiched between the blades. It is clamped by the jig 5A. Next, the annular blade clamped by the blade clamping jig 5 </ b> A is moved in the −Y direction and removed from the mount flange 32.

  As described above, in the blade clamping jig 5A, a pair of clamping plates 50, a pair of gripping portions 52 connected via the connecting member 51, and a pair of gripping portions 52 open the pair of clamping plates 50. An elastic member 53 that closes the pair of sandwiching plates 50 when the pair of gripping portions 52 are opened is provided, and the sandwiching plate 50a (50b) has an inner diameter 2R2 that is equal to or larger than the inner diameter 2R1 of the annular blade 31. By being formed in a C shape having the portion 500 (510), the operator can attach and detach the mounting blade 32 with the annular cutting blade 31 stably held by the blade holding jig 5A. be able to. Therefore, the occurrence of breakage of the annular blade 31 when the annular blade 31 is attached and detached can be suppressed. Moreover, since there is no possibility that an operator touches the cutting edge of the annular blade 31 when attaching / detaching the annular blade 31, the attachment / detachment work can be performed efficiently.

  The operation of the blade clamping jig 5B when the annular blade 31 is clamped by the blade clamping jig 5B will be described below with reference to FIGS.

  When the operator grips the grip 52 of the pair of blade clamping jigs 5B from the outside and applies a force, the elastic member 55 (coil spring 55) contracts in the Y-axis direction. Then, as the coil spring 55 contracts in the Y-axis direction, the pair of clamping plates 50 is opened by the connection member 54 serving as a fulcrum. The coil spring 55 stores elastic energy that returns the coil spring 55 to its natural length.

  After opening the pair of clamping plates 50, for example, the blade clamping jig 5B is brought closer to the annular blade 31 from the side of the notch 500 (510). 9A, the annular blade 31 is sandwiched between the pair of sandwiching plates 50 so that the annular blade 31 enters the gap S between the sandwiching plate 50a and the sandwiching plate 50b. At this time, while aligning the positions of the annular blade 31 and the pair of clamping plates 50 so that the center of the mounting hole 31a shown in FIG. 5A of the annular blade 31 and the centers of the pair of clamping plates 50 overlap. Do.

  After the annular blade 31 enters the gap S between the sandwiching plate 50a and the sandwiching plate 50b, as shown in FIG. 9B, the force with which the operator grips the pair of gripping portions 52 is weakened, and a pair of When the grip 52 is opened, the coil spring 55 returns to its natural length by the elastic energy stored in the coil spring 55, and the pair of clamping plates 50 are closed. Then, when the pair of clamping plates 50 are closed, the annular blade 31 is clamped by the blade clamping jig 5B.

  The method for mounting the annular blade 31 clamped by the blade clamping jig 5B on the mounting flange 32 shown in FIG. 3 and the method for removing the annular blade 31 from the mounting flange 32 are the same as in the case of using the blade clamping jig 5A in the first embodiment. It is the same.

  Thus, also in the blade clamping jig 5B, the operator can attach and detach the mounting blade 32 in a state where the annular cutting blade 31 is stably clamped by the blade clamping jig 5B. Therefore, the occurrence of breakage of the annular blade 31 when the annular blade 31 is attached and detached can be suppressed. Moreover, since there is no possibility that an operator touches the cutting edge of the annular blade 31 when attaching / detaching the annular blade 31, the attachment / detachment work can be performed efficiently.

  Note that, as in the blade clamping jig 5C shown in FIGS. 10A and 10B, a part of the first embodiment is changed to abut against the surface facing either one of the clamping plates 50a or 50b. 56 may be provided. By providing the abutment 56, the annular blade 31 can be gripped more reliably. In this case, an elastic spring washer 57 is used as a connecting member in order to provide a predetermined interval between the pair of grip portions 52a and 52b.

3: Cutting means
3A: Spindle unit 30: Spindle unit
300: Spindle 300a: Screw hole 301: Spindle housing
31: Annular cutting blade (annular blade) 31a: Mounting hole 2R1: Diameter of mounting hole 32: Mount flange
320: Flange
321: Boss part 321a: Base part 321b: Cylindrical part 321c: Screw part
322: Fitting hole 2R3: Diameter of outer periphery of cylindrical portion 33: Fixing flange 34: Fixing nut 35: Washer 36: Screw 370: Blade cover 370a: Screw hole 370b: Screw hole 371: Blade detection block 371a: Hole 371b: Screw 371c: Adjustment screw 372: Removable cover 372a: Hole 372b: Screw
38: Cutting water nozzle 38a: Cutting water inflow pipe 5A: Blade clamping jig 50: A pair of clamping plates 50a (50b): A clamping plate 500 (510): Notch portion 51: Connecting member 52: A pair of gripping portions 52a (52b) : Grasping part 53: Elastic member (rubber band)
2R2: inner diameter of the clamping plate L1: width S: gap 5B: blade clamping jig 54: connecting member 55: elastic member (coil spring)
5C: Blade clamping jig 56: Abutting 57: Connecting member (spring washer)

Claims (2)

In a cutting device comprising a spindle that rotates a cutting blade and a flange that is attached to the spindle and supports the cutting blade, a blade clamping jig used when attaching and detaching an annular cutting blade to and from the flange,
A pair of sandwiching plates, a pair of gripping portions connected via a connecting member, and when the pair of gripping portions are gripped, the pair of sandwiching plates are opened and when the pair of gripping portions are opened, the pair of sandwiching plates are An elastic member for closing,
The clamping plate is a blade clamping jig formed in a C shape having an inner diameter equal to or larger than the inner diameter of the cutting blade and having a notch on the outer circumference. The blade clamping jig according to claim 1, wherein the clamping plate is formed in a C shape having an inner diameter equal to or larger than a diameter of an outer periphery of the flange.

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