TW201927459A - Cutting device that is easy to mount a cutting blade and has good workability - Google Patents

Abstract

[Topic] To provide a cutting device that is easy to mount a cutting blade and has good workability. [Solution] A cutting device which includes blade mounting jigs (60, 160, 260) mounted at the front end of a hub portion (36) of blade seat frames (30, 130) mounted on a rotating shaft (12); wherein all of the blade mounting jigs are formed of resin, and each of which includes: a mounting guide portion (61) having an outer diameter equal to the outer diameter of the hub portion; and fixing convex portions (65, 66, 68) formed at one end of the mounting guide portion, embedded into holes (13, 16) fixed at the front end of the rotating shaft or fixed in holes (49, 72) of fixing members (46, 70) of the rotating shaft, and fixed and positioned in a manner that the outer circumference on which the mounting guide portion is mounted and the hub portion are on the same plane; through a state of fixing the blade mounting jigs on the front end of the hub portion of the blade seat frames by the fixing convex portion, the mounting holes of the cutting blade slid along the outer circumference of the mounting guide portion till the hub portion, so that the cutting blade can be mounted at a fixing flange (32).

Description

Cutting device

The invention relates to a cutting device.

In a cutting device for a cutting process of a semiconductor package substrate or the like, a blade holder is attached to a tip end of a rotating shaft, and a cutting blade is attached to the blade holder (see, for example, Patent Document 1). When the cutting blade is mounted on the blade holder, the mounting hole formed in the inner peripheral portion of the annular cutting blade is aligned with the front end of the hub portion of the blade holder, and the front end of the hub portion is inserted and cut. The mounting hole of the cutting blade. Next, the cutting blade is slid with respect to the outer peripheral surface of the hub portion, and the single surface of the cutting blade abuts against the fixing flange of the blade holder. Thereby, the front end portion of the hub protrudes from the cutting blade, and the fixing nut is locked to the male screw formed at the front end portion. Thereby, the cutting blade is fixed to the blade holder in a state of being sandwiched between the fixing flange and the fixing nut.

This mounting operation with respect to the cutting blade of the blade mount is performed manually by an operator who operates the cutting device. At the periphery of the blade holder, there is a peripheral member such as a wheel cover, and the distance between the peripheral member and the cutting blade is narrowed, and the mounting work of the cutting blade becomes difficult. For example, when an operator with less work experience performs the setting operation of the cutting blade, there is a risk that the cutting blade will hit the peripheral member and the cutting edge of the cutting blade may be damaged. For this reason, a blade mounting jig that can be attached to the blade mount without causing damage to the cutting blade has been developed (see Patent Document 2). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP-A-H09-33907 (Patent Document 2) JP-A-2015-150624

[Problems to be solved by the invention]

However, in the conventional cutting device, since it is necessary to remove the blade mounting jig after the cutting blade is mounted, when the cutting blade is frequently exchanged, there is a problem that the work becomes complicated.

The present invention has been made in view of the above problems, and provides a cutting device which is easy to mount a cutting tool and has excellent workability. [Means for solving problems]

The present invention is a cutting device in which a rotating shaft having a hole for screwing a blade holder is formed at a front end, and a blade holder including a hub portion and a fixing flange integrally formed with the hub portion is screwed, and the blade is mounted on the blade The cradle is provided with a hub base having a mounting hole for inserting the outer periphery of the hub at the center portion, and a cutting device for cutting the cutting blade including a cutting blade formed on the outer periphery of the hub base, a blade mounting jig mounted on a front end of the hub of the blade mount; the blade mounting jig is entirely formed of a resin, and has: a hub having a front end of the hub mounted to the blade mount a mounting guide portion having an outer diameter equal to the outer diameter of the portion, and an end formed at the mounting guide portion, fitted into the hole provided at the front end of the rotating shaft or fixed in a hole of the fixing member of the rotating shaft a fixing convex portion that fixes the mounting guide portion in a state in which the outer circumference of the mounting guide portion and the outer circumference of the mounting portion are flush with each other; and the fixing convex portion of the blade mounting jig is embedded Closing into the hole in the front end of the rotating shaft or in the hole of the fixing member The mounting hole of the cutting blade is slid to the hub along the outer circumference of the mounting guide in a state of being fixed to the front end of the hub, and the fixing flange can be mounted The cutting blade.

According to the above-described cutting device, the blade mounting jig that is fixed by the fixing convex portion with respect to the distal end portion of the rotating shaft or the fixing member fixed to the rotating shaft can be accurately formed when the cutting blade is mounted. Guided and efficiently processed without the labor and time required to remove the blade mounting fixture.

As a fixing member for mounting the blade mounting jig, a fixing member in a form fixed to a hole at the tip end of the rotating shaft can be used. [Effects of the Invention]

As described above, according to the cutting device of the present invention, the cutting blade can be easily installed, and the blade can be exchanged frequently without labor and time, and the workability can be improved in a corresponding manner.

Hereinafter, a cutting device according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 to Fig. 4 show a first embodiment of a cutting mechanism constituting a cutting device, Fig. 5 shows a second embodiment of the cutting mechanism, and Figs. 6 and 7 show a third embodiment of the cutting mechanism.

The cutting mechanism 10 of the first embodiment shown in FIG. 1 to FIG. 4 constitutes a cutting device for cutting a semiconductor package substrate or the like. Though the entire configuration of the cutting device is not shown, the cutting mechanism 10 can be machined in the feed direction (X-axis direction) and indexed with respect to the chuck holding the workpiece (semiconductor package substrate or the like) to be cut. Supports the relative movement of the feed direction (Y-axis direction) and the lift direction (Z-axis direction).

As shown in FIG. 1, the cutting mechanism 10 is provided with a blade mount 30 on a rotating shaft 12 projecting from the spindle housing 11, and a cutting blade 20 is attached to the blade mount 30. The rotating shaft housing 11 is mounted with a rotary joint 50.

The rotating shaft 12 is rotatably supported about the rotating shaft center P in the Y-axis direction with respect to the rotating shaft housing 11, and the rotating shaft 12 is rotated by a rotation driving mechanism (not shown). The rotating shaft 12 has a tapered shape in which the diameter of the tip end portion is relatively small, and a screw hole 13 is formed in the front end surface of the rotating shaft 12.

As shown in Fig. 4, after the rotary shaft 12 is rotationally driven in a state in which the cutting blade 20 is mounted, the cutting blade 20 is rotated about the rotation axis P and the workpiece can be subjected to cutting processing. The configuration of the cutting blade 20 to the rotating shaft 12 will be described in detail below.

The cutting blade 20 is a hub blade 21 having a substantially disk shape and a hub blade attached to the outer circumferential annular cutting edge 22 of the one side surface 24 (see FIGS. 3 and 4 ) of the hub base 21 . A slightly circular mounting hole 23 is formed in the center of the hub base 21.

The blade mount 30 has a cylindrical portion 31 that extends in the Y-axis direction, and a fixing flange 32 that protrudes outward in the radial direction from the cylindrical portion 31. As shown in FIGS. 2 to 4, a fitting hole 33 extending in the Y-axis direction is formed at the center portion of the blade mount 30. The fitting hole 33 has a tapered inner peripheral surface that becomes smaller in diameter from the end surface of the cylindrical portion 31 to the side of the fixed flange 32. The shape of the inner circumferential surface of the fitting hole 33 corresponds to the shape of the outer circumferential surface of the rotating shaft 12, and the rotating shaft 12 can be fitted to the fitting hole 33.

In the fixing flange 32 of the blade mount 30, an abutting surface 34, an annular recess 35, and a boss portion 36 are formed on a surface opposite to the side on which the cylindrical portion 31 protrudes. The abutting surface 34 is an annular surface that is located on the outer peripheral side of the fixed flange 32 and that is perpendicular to the Y-axis direction. The annular recessed portion 35 is located on the inner side in the radial direction of the abutting surface 34 and has a concave shape with respect to the abutting surface 34. The hub portion 36 is provided at the center of the radial direction of the fixed flange 32 and is a cylindrical protruding portion that protrudes from the annular recessed portion 35 in the Y-axis direction from the contact surface 34 .

The outer peripheral surface 37 of the hub portion 36 is a cylindrical surface centering on the rotational axis P in a state in which the blade mount 30 is attached to the rotating shaft 12. The outer diameter of the hub portion 36 corresponds to the inner diameter of the mounting hole 23 of the cutting blade 20, and after the hub portion 36 is inserted into the mounting hole 23, the inner peripheral surface of the mounting hole 23 is supported on the outer peripheral surface 37. Positioning the cutting blade 20 perpendicular to the Y-axis direction (refer to FIG. 4). Further, the length of the hub portion 36 in the Y-axis direction slightly matches the thickness of the cutting blade 20 in the Y-axis direction (see FIG. 4). As shown in FIGS. 2 to 4, a through hole 38 that communicates with the fitting hole 33 is formed inside the hub portion 36. In the through hole 38, an annular segment portion 39 is formed at a boundary portion with the fitting hole 33.

As shown in FIG. 1, in the annular recessed portion 35 of the blade mount 30, a plurality of suction holes 41 are formed at different positions in the rotational direction (circumferential direction) as shown in FIGS. 2 to 4, and formed in the blade mount 30. A plurality of suction passages 42 through which the suction holes 41 communicate. Each of the suction passages 42 is open on the bottom surface of the annular groove 43 formed on the outer circumferential surface of the cylindrical portion 31. The annular groove 43 is a groove extending in the circumferential direction of the cylindrical portion 31 and is continuously formed over the entire circumference of the cylindrical portion 31.

When the blade mount 30 is attached to the rotary shaft 12, the rotary shaft 12 is fitted with respect to the fitting hole 33. Next, the washer 45 is inserted into the through hole 38 to abut against the segment portion 39, and the screw hole 13 at the tip end of the rotary shaft 12 is screwed and locked by the screw hole 13 at the tip end of the rotary shaft 12. The screwing of the fixing bolt 46 is performed by restricting the rotation of the rotating shaft 12 by a rotating shaft rotation locking mechanism (not shown) disposed on the rotating shaft housing 11.

The fixing bolt 46 has a male screw portion 47 screwed to the screw hole 13 and a head portion 48 having a larger diameter than the male screw portion 47, and the head portion 48 abuts against the washer 45. A hexagonal hole 49 is formed in the center of the head portion 48 so as to be coaxial with the male screw portion 47, so that a tool such as a hexagonal wrench can be fitted to the hole 49 to rotate the fixing bolt 46. After the fixing bolt 46 is locked by the tool, a force is applied to press the shaft 12 into the fitting hole 33, and the blade holder 30 is fixed with respect to the rotating shaft 12. That is, the blade mount 30 is screwed to the rotary shaft 12 by the fixing bolts 46.

A rotary joint 50 is attached to the end of the shaft housing 11. The rotary joint 50 includes a cylindrical support cylinder 51 and a mounting plate 52 that protrudes outward from the support cylinder 51 in the radial direction. As shown in FIG. 1, by screwing the mounting screw 54 inserted into the plurality of screw insertion holes 53 formed in the mounting plate 52, the screw hole 14 formed at the end of the spindle housing 11 is screwed and locked. The rotary joint 50 is fixed to the spindle housing 11. The support cylinder 51 is provided with a cylindrical portion 55 that protrudes outward in the radial direction, and a communication passage 56 is formed inside the cylindrical portion 55. One end of the communication passage 56 is opened on the inner circumferential surface of the support cylinder 51, and the other end of the communication passage 56 is opened at the front end of the cylindrical portion 55.

The rotary joint 50 is attached to the spindle housing 11 before the blade mount 30 is mounted with respect to the rotating shaft 12. Then, after the blade mount 30 is attached to the rotary shaft 12, the cylindrical portion 31 is inserted so as to be rotatable inside the support cylinder 51. As shown in FIGS. 2 to 4, the annular groove 43 communicates with the communication passage 56 in a state in which the cylindrical portion 31 is inserted into the support cylinder 51. Since the annular groove 43 is formed over the entire circumference of the cylindrical portion 31, the annular groove 43 and the communication passage 56 are always maintained in communication with each other at any position in the rotational direction with respect to the rotary joint 50.

In other words, the blade mount 30 is mounted in the state of the rotating shaft 12, and a suction path that continues from the suction hole 41 through the suction passage 42 and the annular groove 43 to the communication passage 56 is formed. As shown in FIGS. 2 to 4, the suction line extending from the suction source 57 is connected to the communication path 56 of the cylindrical portion 55, and after the suction source 57 is driven, air can be sucked from the suction hole 41 through the suction path. Further, the inner circumferential surface of the support cylinder 51 is blocked by the position of the annular groove 43 facing the communication passage 56, and air leakage does not occur in the middle of the suction passage, and the suction efficiency is not impaired.

As above, the cutting blade 20 is mounted with respect to the blade mount 30 mounted on the rotating shaft 12. The cutting blade 20 is positioned with respect to the blade mount 30 by inserting the boss portion 36 into the hub portion 36 such that the side surface 24 of the hub base 21 abuts against the abutting surface 34 of the fixed flange 32.

Further, in the cutting device, peripheral members such as a wheel cover (not shown) covering the outer side of the cutting blade 20 are provided around the cutting mechanism 10, and the cutting blade 20 of the blade holder 30 is mounted. Requires proficiency. For example, in the Y-axis direction, if the wheel sleeve protrudes more than the hub portion 36 of the blade mount 30 on the front side (the left side in FIGS. 2 to 4), it is necessary to cut the sleeve while avoiding the sleeve. This limitation of the insertion of the mounting hole 23 of the blade 20 against the hub 36 is such a restriction. In particular, if the distance between the cutting edge 22 of the cutting blade 20 and the wheel sleeve is narrow, the cutting edge 22 may be in danger of colliding with the wheel sleeve. Here, in the cutting mechanism 10, before the cutting blade 20 is attached to the blade mount 30, the blade mounting jig 60 is attached to the front end of the hub portion 36, and the mounting portion is substantially extended by the boss portion 36. Sexual improvement.

The blade mounting jig 60 is formed of a lightweight resin such as nylon, and has a cylindrical mounting guide portion 61 having an outer diameter equivalent to that of the boss portion 36. The outer peripheral surface 62 of the mounting guide portion 61 formed of nylon or the like is a surface having good slidability (slight sliding resistance). In the installation guide portion 61, a chamfered portion 63 that smoothes the corner portion is formed from one end surface to the outer circumferential surface 62. Moreover, the attachment surface 64 which is the other end surface of the installation guide part 61 is provided with the fixing convex part 65 which fixes the mounting guide part 61 in the state with which it is positioned with respect to the hub part 36. The mounting surface 64 is a surface that is perpendicular to the Y-axis direction.

The fixing convex portion 65 is a protrusion that protrudes from the center of the mounting surface 64 and has a hexagonal columnar shape corresponding to the hole 49 of the fixing bolt 46. When the blade mounting jig 60 is attached to the hub portion 36, the fixing convex portion 65 is inserted into the hole 49. The cross-sectional dimension of the fixing convex portion 65 before insertion is only slightly larger than the cross-sectional size of the hole 49, and the blade mounting jig 60 having the fixing convex portion 65 is made of a softer material than the fixing bolt 46 having the hole 49. (For example, the fixing bolt 46 is made of metal, and the blade mounting jig 60 is made of resin such as nylon). Therefore, the fixing convex portion 65 is fitted (pressed in) to the hole 49 while being compressed and deformed. When the attachment surface 64 on which the guide portion 61 is attached abuts against the distal end surface of the hub portion 36, the insertion beyond the fixed projection portion 65 is restricted.

Thereby, the outer peripheral surface 62 of the installation guide portion 61 and the outer peripheral surface 37 of the hub portion 36 are positioned on the same surface, and the blade mounting jig 60 is fixed to the hub portion 36. Further, by abutting the mounting surface 64 to the front end surface of the boss portion 36, the inclination of the mounting guide portion 61 with respect to the hub portion 36 is suppressed (the coaxiality between the boss portion 36 and the mounting guide portion 61 is ensured) The relative position of the outer peripheral surface 37 and the outer peripheral surface 62 can be accurately maintained.

Thereby, the blade mounting jig 60 having the same diameter in the hub portion 36 is fixed in the positioned state, and the hub portion 36 is substantially extended only by the length of the mounting guide portion 61. Since the fixing convex portion 65 is press-fitted and fixed with respect to the hole 49 of the fixing bolt 46 for mounting the blade mount 30 to the rotary shaft 12, the configuration of the existing blade mount 30 can be easily changed, and the blade can be easily installed. A jig 60 is installed.

The mounting sequence of the cutting blade 20 will be described with reference to Figs. 2 to 4 . First, the rotary joint 50 is attached to the spindle housing 11, and this is in a state in which the blade mount 30 is attached to the rotary shaft 12 in advance (see FIG. 2). In this state, as shown in FIGS. 2 to 3, the fixing convex portion 65 of the blade mounting jig 60 is fitted (pressed) into the hole 49 of the fixing bolt 46, and the mounting surface 64 abuts against the front end of the boss portion 36. surface. Thereby, the blade mounting jig 60 is fixed to the blade mount 30, and the outer peripheral surface 62 of the mounting guide 61 is flush with the outer peripheral surface 37 of the hub 36.

Next, as shown in FIG. 3, the mounting hole 61 of the blade mounting jig 60 is aligned with the mounting hole 23 of the cutting blade 20, and the mounting hole 23 is inserted into the mounting guide 61. At this time, by attaching the blade mounting jig 60 to the hub portion 36, the alignment of the cutting blade 20 with respect to the blade holder 30 can be performed on the front side of the mounting direction of the cutting blade 20. Thereby, the cutting blade 20 can be mounted without being aware of the collision and interference with the cutting edge 22 of other members (for example, the wheel cover) around the blade holder 30.

Further, since the chamfered portion 63 is formed at the corner portion on the one end side of the mounting guide portion 61, the inner peripheral surface of the mounting hole 23 of the cutting blade 20 can be smoothly guided to the outer peripheral surface 62 of the blade mounting jig 60. on. For example, even if the cutting blade 20 is inclined with respect to the hub portion 36 with respect to the Y-axis, or how much the eccentricity of the cutting blade 20 is in the X-axis direction or the Z-axis direction with respect to the hub portion 36, the corner portion is removed. 63 can guide the inner peripheral surface of the mounting hole 23, and guide the cutting blade 20 to the proper insertion position as shown in FIG.

As shown in FIG. 3, after the mounting hole 23 of the cutting blade 20 is inserted into the outer peripheral surface 62 of the mounting guide portion 61, the cutting blade 20 is slid in the Y-axis direction to the hub portion 36 along the outer peripheral surface 62. until. Since the mounting guide portion 61 is formed of a material having good slidability, the inner peripheral surface of the mounting hole 23 can be smoothly moved on the outer peripheral surface 62 of the mounting guide portion 61. Further, since the outer peripheral surface 62 of the mounting guide portion 61 and the outer peripheral surface 37 of the boss portion 36 are flush with each other, the sliding of the cutting blade 20 does not cause a hook at the boundary between the mounting guide portion 61 and the hub portion 36. .

As shown in FIG. 4, the cutting blade 20 is inserted in the Y-axis direction to a position where the side surface 24 of the hub base 21 abuts against the abutting surface 34 of the fixed flange 32. The length of the hub portion 36 in the Y-axis direction is slightly equal to the thickness of the cutting blade 20, and the inner peripheral surface of the mounting hole 23 is supported by the outer peripheral surface 37 of the hub portion 36.

In a state where the cutting blade 20 is attached to the position of FIG. 4, the side surface 24 of the hub base 21 faces the annular recess 35 of the blade mount 30. When the suction source 57 is driven in this state, a negative pressure is applied to the annular recessed portion 35 through the communication passage 56, the annular groove 43, the suction passage 42, and the suction hole 41. Thereafter, the hub base 21 of the cutting blade 20 is attracted and sucked and held by the abutting surface 34 of the fixed flange 32.

As shown in FIG. 4, the cutting mechanism 10 cuts the workpiece in a state in which the blade mounting jig 60 is mounted. After the suction holding of the cutting blade 20 is maintained and the rotating shaft 12 is rotationally driven, the cutting blade 20 attached to the rotating shaft 12 via the blade mount 30 is rotated about the rotational axis P. The blade mounting jig 60 rotates together with the cutting blade 20 and the blade mount 30. The fixing convex portion 65 of the blade mounting jig 60 is pressed in the axial direction (Y-axis direction) of the rotary shaft 12, because the resin forming the blade mounting jig 60 with the high-speed rotation of the rotary shaft 12 is deflected by the centrifugal force. The blade mounting jig 60 does not slow down or fall off from the blade mount 30. Further, the blade mounting jig 60 is made of a lightweight resin and has a rotationally symmetrical shape fixed to the rotating shaft center P, and the weight balance of the rotating portion of the cutting mechanism 10 does not collapse, and the shaft of the rotating shaft 12 does not occur. shock. That is, the blade mounting jig 60 does not adversely affect the rotational driving of the cutting blade 20.

When the cutting blade 20 attached to the blade mount 30 is removed, the driving of the suction source 57 is stopped. Thereby, the attraction force that attracts the cutting blade 20 to the fixing flange 32 is released, and the cutting blade 20 can be pulled out from the hub portion 36 in the Y-axis direction. Since the outer peripheral surface 62 of the mounting guide portion 61 of the blade mounting jig 60 attached to the hub portion 36 guides the movement of the cutting blade 20 in the Y-axis direction, it is possible to prevent the peripheral member of the blade mount 30 from colliding. It is easy to pull out the cutting blade 20 (wheel cover, etc.).

As described above, in the cutting apparatus of the present embodiment, since the blade mounting jig 60 is attached to the cutting blade 20 in a state in which the guiding length in the Y-axis direction is extended, it is difficult to receive the blade holder 30. The influence of the peripheral components can provide good workability. The blade mounting jig 60 is fitted and fixed to the fixing hole 65 with respect to the hole 49 of the bolt 46 screwed to the screw hole 13 of the rotating shaft 12. The attachment of the blade mounting jig 60 is only required to insert the fixing convex portion 65 in the Y-axis direction with respect to the hole 49, and can be easily performed without a special tool. Further, since the cutting blade 20 can be maintained in a state in which the blade mounting jig 60 is mounted after the cutting blade 20 is mounted, the labor and time for removing the blade mounting jig 60 are not required each time the cutting blade 20 is mounted. It reduces the cumbersomeness of the work. The blade mounting jig 60 that is then maintained in the mounted state can also be used for guiding when the cutting blade 20 is removed. Therefore, the installation work of the cutting blade 20 can be easily performed even by an unskilled operator. Moreover, since the cutting blade 20 can be easily and quickly attached and detached, it is particularly suitable when the cutting of the cutting blade 20 is frequently performed. For example, when the cutting edge 22 of the cutting blade 20 is cut into the polishing dressing of the polishing tool, since the cutting blade 20 is exchanged once and once for continuous operation, the cutting mechanism 10 including the blade mounting jig 60 is effective. Extremely high.

Fig. 5 is a view showing a cutting mechanism 110 according to a second embodiment of the cutting device. In the cutting mechanism 110, constituent elements that are substantially the same as the cutting mechanism 10 of the first embodiment described above are denoted by the same reference numerals and will not be described. The rotating shaft 112, the blade mount 130, and the blade mounting jig 160 correspond to the rotating shaft 12, the blade mount 30, and the blade mounting jig 60 in the cutting mechanism 10, respectively. Similarly to the blade mounting jig 60, the blade mounting jig 160 is formed entirely of lightweight resin such as nylon.

The cutting mechanism 110 has a different configuration in which the blade holder 130 is screwed with respect to the rotating shaft 112. The front end surface of the rotating shaft 112 is formed with a fitting hole 16, and a male screw 17 is formed on the outer peripheral surface of the vicinity of the front end of the rotating shaft 112 that surrounds the fitting hole 16. The fitting hole 16 is a polygonal hole having a polygonal cross section (for example, a hexagonal shape) in a direction perpendicular to the Y-axis direction.

The fitting hole 40 of the insert holder 130 to which the rotary shaft 112 is fitted penetrates the insert holder 130 in the Y-axis direction through the inner side of the boss portion 36 (the inside of the hub portion 36 is not formed, and the through hole 38 of the first embodiment is not formed). And section 39). The fitting hole 40 has a tapered inner peripheral surface that becomes smaller in inner diameter as it enters the distal end side of the hub portion 36, and the outer peripheral surface of the rotating shaft 112 has a tapered shape corresponding to the inner peripheral surface of the fitting hole 40. After the rotating shaft 112 is inserted into the fitting hole 40 of the blade mount 130, the front end portion of the rotating shaft 112 protrudes from the fitting hole 40. The male screw 17 with respect to the protruding portion of the rotary shaft 112 screwes the fixing nut 70.

The fixing nut 70 is an annular member having an inner circumferential surface of the female screw screwed to the male screw 17, and has a cylindrical shape that is flush with the male screw 17 and is flush with the outer circumferential surface 37 of the boss 36. The outer peripheral surface 71. Further, a plurality of (for example, four) holes 72 are formed at positions different from each other in the circumferential direction at the distal end surface of the fixing nut 70 (the end surface opposite to the side opposite to the front end of the boss portion 36).

When the rotary shaft 112 fixes the blade mount 130, the rotary shaft 112 is inserted into the fitting hole 40, and the fixing nut 70 is screwed with respect to the male screw 17 protruding from the fitting hole 40, and is fitted to the fitting hole 16 and the hole 72 by the fitting. The predetermined tool locks the fixing nut 70. The tool restricts the rotation of the rotating shaft 112 by fitting the fitting hole 16 of the non-circular cross section, and engages the hole 72 to rotate the fixing nut 70. By thus locking the fixing nut 70, the fixing nut 70 is pressed to the front end surface of the hub portion 36, and the blade holder 130 is fitted and fixed to the rotating shaft 112.

The blade mounting jig 160 has a fixing convex portion 66 that is inserted with respect to the fitting hole 16 formed in the front end surface of the rotating shaft 112. The fixing convex portion 66 is a prismatic convex portion corresponding to a polygonal cross section (for example, a hexagonal cross section) of the fitting hole 16 . The cross-sectional dimension of the fixing convex portion 66 is only slightly larger than the cross-sectional size of the fitting hole 16, and the fixing convex portion 66 is compressed and deformed with respect to the fitting hole 16 while being fitted (pressed in). The blade mounting jig 160 is pressed into the mounting surface 64 of the mounting guide 61 to abut against the front end surface of the fixing nut 70. In this state, the outer peripheral surface 62 of the mounting guide portion 61, the outer peripheral surface 71 of the fixing nut 70, and the outer peripheral surface 37 of the boss portion 36 are flush with each other, and the hub portion 36 (and the fixing nut) are provided by the blade mounting jig 160. 70) A state of substantial extension.

In the same manner as the cutting mechanism 10 of the first embodiment, in the cutting mechanism 110 of the second embodiment, the positioning of the cutting blade 20 is performed from the front side of the Y-axis direction by the blade mounting jig 160. The mounting workability of the cutting blade 20 is obtained. The blade mounting jig 160 is maintained in the state in which the blade holder 130 is mounted after the setting of the cutting blade 20, and is also guided by the blade mounting jig 160 when the cutting blade 20 is removed. Good workability. Further, the blade mounting jig 160 which is made of a lightweight resin and is fitted to the fitting hole 16 of the rotary shaft 112 does not fall off when the rotary shaft 112 is rotationally driven, and does not cause rotational vibration and the action of the cutting blade 20. There will be no bad effects.

The screw hole 13 in the cutting mechanism 10 of the first embodiment and the fitting hole 16 in the cutting mechanism 110 of the second embodiment are both holes for screwing the blade holders 30 and 130 to the rotating shafts 12 and 112. . More specifically, the screw hole 13 is a hole into which the fixing bolt 46 for screw fixing is directly screwed. On the other hand, the fitting hole 16 is a hole for stopping the rotation when the fixing nut 70 for fixing the screw is screwed to the male screw 17 .

In the cutting mechanism 10 of the first embodiment, the fixing convex portion 65 of the blade mounting jig 60 is indirectly fixed to the screw hole 13 of the rotating shaft 12 by the hole 49 of the fixing bolt 46 which is fixed to the rotating shaft 12. In the cutting mechanism 110 of the second embodiment, the fixing convex portion 66 of the blade mounting jig 160 is directly fitted and fixed to the fitting hole 16 of the rotating shaft 112.

Therefore, the cutting mechanism 10 of the first embodiment and the cutting mechanism 110 of the second embodiment indirectly or directly fix the convex portions 65 and 66 with respect to the screw holes 13 and the fitting holes 16 formed at the tips of the rotating shafts 12 and 112. It is common to fit and mount the blade mounting jigs 60, 160.

The cutting mechanism 210 of the third embodiment shown in FIG. 6 is not fixed by the suction with respect to the blade holder 230, but the cutting blade 20 is fixed by the blade fixing nut 80. Therefore, no suction path is formed in the blade mount 230. Specifically, the annular recessed portion 35 and the suction hole 41 are not formed on the contact surface 34 of the fixed flange 32, and the annular groove 43 is not formed on the outer peripheral surface of the cylindrical portion 31. Further, the rotary joint 50 is not provided. A male screw 238 is formed on the outer peripheral surface 237 near the front end of the hub portion 236 of the blade mount 230. Similarly to the second embodiment, the fixing nut 70 is screwed to the rotating shaft 212 by the fixing nut 70. In this state, the outer circumferential surface 71 of the fixing nut 70 and the outer circumferential surface 237 of the hub portion 236 are flush with each other.

In the cutting mechanism 210 of the third embodiment, a blade mounting jig 260 that can be attached to the fixing nut 70 is used. The blade mounting jig 260 has a through hole 67 penetrating in the Y-axis direction at the center of the mounting guide 61, and does not include a convex portion corresponding to the fixing convex portions 65 and 66 of the blade mounting jigs 60 and 160 at the center portion. Instead of this, the blade mounting jig 260 projects the plurality of fixing projections 68 from the mounting surface 64 around the through hole 67. The plurality of fixing projections 68 are arranged and sized to fit into the plurality of holes 72 of the fixing nut 70. Specifically, as shown in FIG. 7, the blade mounting jig 260 is provided with four fixing convex portions 68 at equal intervals in the circumferential direction. Each of the fixing convex portions 68 is a cylindrical convex portion and is formed in a spherical shape at the front end. The blade mounting jig 260 includes the entire fixing convex portion 68 and is formed of a lightweight resin such as nylon.

The mounting of the cutting blade 20 in the cutting mechanism 210 is performed as follows. The blade mounting jig 260 is mounted by the fixing nut 70 in a state where the blade holder 230 is fixed to the rotating shaft 212. When the blade mounting jig 260 is attached, each of the fixing convex portions 68 is fitted (pressed) into each of the holes 72. Thereby, the blade mounting jig 260 is fixed with respect to the fixing nut 70. Next, the outer peripheral surface 62 of the mounting guide 61 of the blade mounting jig 260, the outer peripheral surface 71 of the fixing nut 70, and the outer peripheral surface 237 of the hub 236 are flush with each other.

Further, compared with the fixing convex portions 65 and 66 of the blade mounting jigs 60 and 160 of the first and second embodiments, the fixing convex portions 68 of the blade mounting jig 260 are relatively small, and in order to obtain a sufficient fixing force, As the fixing means of the blade mounting jig 260, an adhesive or the like may be used in an auxiliary manner. Specifically, the adhesive is applied to the mounting surface 64 of the mounting guide 61 of the blade mounting jig 260 so as to be adhered to the front end surface of the rotating shaft 212 of the distal end surface of the fixing nut 70.

Next, the mounting hole 23 of the cutting blade 20 is aligned to the mounting guide 61 of the blade mounting jig 260, and the outer peripheral surface 62 of the guiding portion 61 is slidably guided while the mounting hole 23 is provided. Inserted into the hub 236. At this time, the blade mounting jig 260 can obtain the same effects as those of the blade mounting jigs 60 and 160 described above.

After the cutting blade 20 is inserted so that the side surface 24 of the hub base 21 abuts against the abutting surface 34 of the fixed flange 32, the vicinity of the front end of the hub portion 236 protrudes from the mounting hole 23 of the cutting blade 20 (projects to Left in Figure 6). The blade fixing nut 80 is screwed with respect to the male screw 238 formed on the protruding portion. On the inner circumferential surface of the blade fixing nut 80, a female screw screwed to the male screw 238 is formed.

In the state in which the blade mounting jig 260 is mounted, the through hole 67 is located on the extension of the fitting hole 16 at the tip end of the rotating shaft 212. That is, even if the blade mounting jig 260 is mounted, the fitting hole 16 is not blocked. Therefore, the tool can be fitted to the fitting hole 16 through the through hole 67 to restrict the rotation of the rotating shaft 212, and the blade fixing nut 80 can be locked. After the locking of the blade fixing nut 80 is completed, the hub base 21 is clamped by the blade fixing nut 80 and the fixing flange 32, and the cutting blade 20 is fixed with respect to the blade frame 230.

In the cutting mechanism 210, the cutting process of the cutting blade 20 is performed in a state in which the blade mounting jig 260 is mounted. Next, when the cutting blade 20 is removed, it is also guided by the blade mounting jig 260, and good workability can be obtained.

In the above embodiments, the blade mounting jigs (60, 160, 260) are fixed directly or by a fixing member with respect to the rotating shaft (12, 112, 212) to mount the blade mounting jig. It is common to be able to mount and remove the cutting blade (20) to the blade mount (30, 130, 230).

The cutting mechanism 10 of the first embodiment is a hole (hole 49) provided in a fixing member (fixing bolt 46) that is fixed (screwed) with respect to a hole (screw hole 13) formed at the tip end of the rotating shaft 12, and the blade is made The fixing convex portion 65 of the mounting jig 60 is fitted to each other.

In the cutting mechanism 110 of the second embodiment, the fixing convex portion 66 of the blade mounting jig 160 is directly fitted into the hole (the fitting hole 16) formed at the tip end of the rotating shaft 112.

In the cutting mechanism 210 of the third embodiment, the blade mounting jig 260 is provided in a hole (hole 72) of a fixing member (fixing bolt 70) provided on the outer periphery of the rotating shaft 212 (fixed to the male screw 17). The fixing convex portion 68 is configured to be fitted.

Regarding the blade holder for holding the cutting blade and the blade mounting jig for mounting the cutting blade, the blade holder 30, 130, 230 and the blade mounting jig of the above embodiment may be employed. 60, 160, 260 different compositions.

For example, in the above-described embodiment, only one type of blade mounting jigs 60, 160, and 260 are shown in the Y-axis direction in each of the cutting mechanisms, but a plurality of blade mounting jigs having different lengths in the Y-axis direction are prepared in advance. The operator can select any predetermined length of the blade mounting jig and install it. At this time, it is also possible to improve the visibility by making the color of the blade mounting jig different depending on the length.

In the blade mounting jigs 60 and 160 of the above-described embodiment, the fixing convex portions 65 and 66 have a polygonal (hexagonal) cross-sectional shape, and the blade mounting jig 260 has a plurality of fixing convex portions 68 having a cylindrical shape, but as long as it can be borrowed It may be fixed by fitting, and the shape of the fixing convex portion may be other than the shape.

The target workpiece to be cut by the cutting blade to which the present invention is applied may be other than the semiconductor package substrate.

Further, although the respective embodiments of the present invention have been described, the above-described embodiments and modifications may be combined in whole or in part as another embodiment of the present invention.

In addition, the embodiment of the present invention is not limited to the above-described embodiments and modifications, and various changes, substitutions, and modifications may be made without departing from the spirit and scope of the invention. Further, depending on the advancement of the technology or other technologies derived therefrom, it can be implemented by means of a method different from the technical idea of the present invention. Therefore, the scope of the patent application covers all the embodiments that can be obtained within the scope of the technical idea of the present invention. [Industry use possibility]

As described above, according to the cutting apparatus of the present invention, the blade mounting jig fixed to the front end portion of the rotating shaft by the fitting of the fixing convex portion improves the mounting workability of the cutting blade, and the cutting blade is cut. It is particularly useful for cutting devices with high frequency of removal.

10‧‧‧ Cutting mechanism

11‧‧‧Shaft housing

12‧‧‧ shaft

13‧‧‧ screw holes

16‧‧‧ fitting holes

17‧‧‧ male screws

20‧‧‧Cut cutting blade

21‧‧‧ Hub abutment

22‧‧‧ cutting edge

23‧‧‧Installation holes

30‧‧‧blade mount

31‧‧‧Cylinder

32‧‧‧Fixed flange

33‧‧‧ fitting holes

34‧‧‧Abutment

35‧‧‧ annular recess

36‧‧‧ Hub

37‧‧‧ outer perimeter

40‧‧‧ fitting holes

41‧‧‧Attraction hole

42‧‧‧Attracting the way

43‧‧‧ annular groove

45‧‧‧Washers

46‧‧‧ fixing bolts (fixing members)

49‧‧‧ hole

50‧‧‧Rotary joints

51‧‧‧Support tube

52‧‧‧Installation board

55‧‧‧Cylinder

56‧‧‧Connected Road

57‧‧‧Attraction source

60‧‧‧Blade fixture

61‧‧‧Installation guide

62‧‧‧ outer perimeter

63‧‧‧Going to the corner

64‧‧‧Installation surface

65‧‧‧Fixed convex

66‧‧‧Fixed convex

67‧‧‧through holes

68‧‧‧Fixed convex

70‧‧‧ fixing nut (fixing member)

71‧‧‧ outer perimeter

72‧‧‧ hole

80‧‧‧blade fixing nut

110‧‧‧ Cutting mechanism

112‧‧‧ shaft

130‧‧‧blade mount

160‧‧‧Blade fixture

210‧‧‧ Cutting mechanism

212‧‧‧ shaft

230‧‧‧blade mount

236‧‧‧ hub

237‧‧‧ outer perimeter

238‧‧‧ male screws

260‧‧‧Blade fixture

P‧‧‧Rotary axis

Fig. 1 is an exploded perspective view showing a cutting mechanism according to a first embodiment of the cutting device. Fig. 2 is a cross-sectional view showing a process of attaching a blade mounting jig to a blade mount by the cutting mechanism of the first embodiment. Fig. 3 is a cross-sectional view showing a process of installing a cutting blade by the cutting mechanism of the first embodiment. [Fig. 4] Fig. 4 is a cross-sectional view showing a state in which the cutting blade is attached to the cutting mechanism of the first embodiment. Fig. 5 is a cross-sectional view showing the construction of a blade mounting jig in a blade mount according to the cutting mechanism of the second embodiment. Fig. 6 is a cross-sectional view showing the construction of a blade mounting jig in a blade mount according to the cutting mechanism of the third embodiment. Fig. 7 is a perspective view showing a blade mounting jig of a third embodiment.

Claims (2)

A cutting device is a rotating shaft formed with a hole for fixing a blade holder at a front end, and a blade holder including a hub portion and a fixing flange integrally formed with the hub portion is screwed, and the blade holder is mounted on the blade holder A cutting device having a hub base having a mounting hole for inserting an outer circumference of the hub portion and a cutting blade including a cutting edge formed on an outer circumference of the hub base at a center portion, and a cutting device for performing a cutting process, comprising: a blade mounting jig provided at a front end of the hub of the blade mount; the blade mounting jig is entirely formed of a resin, and has: an outer portion having the hub portion attached to the front end of the hub portion of the blade mount a mounting guide portion having an outer diameter equal to the diameter, and an end formed at the mounting guide portion, fitted into the hole provided at the front end of the rotating shaft or fixed in a hole of the fixing member of the rotating shaft a fixing convex portion in which the outer circumference of the guiding portion and the outer circumference of the hub portion are flush with each other, wherein the fixing convex portion is fixed in a state in which the mounting guiding portion is positioned; and the fixing convex portion of the blade mounting jig is fitted to the fixing convex portion Inside the hole at the front end of the shaft or the In the hole of the fixed member, the mounting hole of the cutting blade is slid along the outer circumference of the mounting guide to the hub in a state of being fixed to the front end of the hub of the blade holder. The cutting blade is attached to the fixed flange. The cutting device according to claim 1, wherein the fixing member is fixed to the hole at the front end of the rotating shaft.