JP6341681B2 - Blade mounting tool - Google Patents

Description

  The present invention relates to a blade mounting tool for mounting a cutting blade on a blade mount.

  In a cutting apparatus for dicing a semiconductor package substrate or the like, a blade mount is attached to the tip of a rotary spindle, and a cutting blade is attached to the blade mount (see, for example, Patent Document 1). In the blade mount described in Patent Document 1, a cylindrical boss portion extends in the rotation axis direction of the rotary spindle, and a fixed flange extends radially outward from the base end of the boss portion. A mounting hole to be mounted on the outer peripheral surface of the boss portion of the blade mount is formed in the center of the cutting blade, and the cutting blade is positioned with respect to the blade mount by mounting the boss portion in the mounting hole.

  When the cutting blade is mounted on the blade mount, the cutting blade mounting hole is aligned with the tip of the boss portion of the blade mount, and the tip of the boss portion is inserted into the cutting blade mounting hole. Then, the cutting blade is slid with respect to the outer peripheral surface of the boss portion, and one surface of the cutting blade is brought into contact with the fixed flange of the blade mount. As a result, the tip end portion of the boss portion protrudes from the cutting blade, and a fixing nut is fastened to the male screw formed at the tip end portion. In this way, the cutting blade is fixed to the blade mount while being sandwiched between the fixing flange and the fixing nut.

JP-A-11-33907

  In the cutting apparatus described in Patent Document 1, the cutting blade is mounted on the blade mount manually by an operator. There are peripheral members such as a wheel cover around the blade mount, and the clearance between these peripheral members and the cutting blade is narrow, making it difficult to mount the cutting blade. For this reason, when an operator with little work experience performs the mounting operation of the cutting blade, the cutting blade may collide with the peripheral member, and the cutting blade of the cutting blade may be damaged.

  The present invention has been made in view of these points, and an object of the present invention is to provide a blade mounting tool that can be mounted on a blade mount without damaging the cutting blade regardless of the skill of the operator.

The blade mounting tool of the present invention is a blade mount that is fixed to the tip of a rotary spindle, including a boss portion having a recess formed at the tip and having a magnetic adhesion property, and a fixing flange formed integrally with the boss portion. A blade mounting tool for mounting a cutting blade including a hub base having a mounting hole to be inserted into the outer periphery of the boss portion at the center and a cutting blade formed on the outer periphery of the hub base, is detachably fixed to the distal end of the boss portion of the blade mount, have a outer diameter equal to the outer diameter and the boss portion, and the mounting guide portion of the bar-shaped extending one end side from the tip of the boss portion, said mounting guide A positioning convex portion that is formed at the other end of the boss portion and engages in a recess at the tip of the boss portion to position the mounting guide portion so that the outer periphery of the mounting guide portion and the outer periphery of the boss portion are flush with each other. And a magnet disposed in the mounting guide part, The positioning convex portion to the other end of said mounting guide portion engages with the recess of the boss portion attached to said boss tip of the blade mount by magnetic force while extending the boss portion, the cutting The mounting hole of the blade is inserted from one end side of the mounting guide portion and slid to the boss portion to mount the cutting blade to the fixed flange.

  According to this configuration, the boss portion of the blade mount is substantially extended by attaching the blade mounting tool to the tip of the boss portion of the blade mount. At this time, in the mounting direction of the cutting blade, the blade mounting tool is protruded from the peripheral member around the blade mount, and the cutting blade mounting hole is inserted into the mounting guide of the blade mounting tool on the front side of the peripheral member. it can. Therefore, when the mounting hole of the cutting blade is inserted into the tip of the mounting guide portion, the cutting blade does not collide with the peripheral member. Further, since the outer periphery of the boss portion of the blade mount and the outer periphery of the mounting guide portion of the blade mounting tool are flush with each other, the cutting blade can be smoothly guided to the boss portion. Thus, regardless of the skill of the operator, the cutting blade can be mounted on the blade mount without being damaged. Further, since the blade mounting tool is mounted on the boss portion by the magnetic force of the magnet, the blade mounting tool can be easily attached to and detached from the boss portion.

  According to the present invention, by fixing the blade mounting tool to the blade mount and substantially extending the boss portion, the cutting blade can be mounted on the blade mount without being damaged regardless of the skill of the operator.

It is a disassembled perspective view of the attachment structure of the cutting blade which concerns on this Embodiment. It is explanatory drawing of the attachment operation | movement of a general cutting blade. It is explanatory drawing of the blade mounting tool which concerns on this Embodiment. It is explanatory drawing of the mounting procedure of the cutting blade which concerns on this Embodiment.

  Hereinafter, embodiments will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of a cutting blade mounting structure according to the present embodiment. FIG. 2 is an explanatory diagram of a general cutting blade attachment operation. In FIG. 1, for convenience of explanation, the wheel cover that covers the outer periphery of the cutting blade is omitted. In addition, the attachment structure of the cutting blade should just be the structure which can attach or detach a blade mounting tool, and is not limited to the structure shown in FIG.

  As shown in FIG. 1, the mounting structure of the cutting blade 2 according to the present embodiment is configured such that the blade mount 3 is attached to the spindle 1 and the cutting blade 2 is attached to the spindle 1 via the blade mount 3. Has been. The spindle 1 is an air spindle, for example, and supports a rotating spindle (spindle shaft) 12 in a floating state with respect to the spindle housing 11 via a compressed air layer. A tip portion 13 of the rotary spindle 12 protrudes from the spindle housing 11, and the blade mount 3 is attached to the tip portion 13 of the rotary spindle 12.

  The blade mount 3 is made of a material having magnetism such as iron, and has a cylindrical boss portion 31 and a fixed flange 32 formed integrally with the boss portion 31. The boss portion 31 extends in the rotational axis direction, and the fixing flange 32 extends radially outward from the base end side of the boss portion 31. Further, a fitting hole 33 into which the tip end portion 13 of the rotary spindle 12 is fitted from the fixed flange 32 side is formed in the shaft center of the blade mount 3 (see FIG. 3). A circular recess 35 is formed on the tip surface 34 of the boss portion 31, and a through hole 37 that is continuous with the fitting hole 33 is formed on the bottom surface 36 of the circular recess 35.

  The front end surface 15 of the rotary spindle 12 is exposed from the through hole 37 in a state where the front end surface 15 is fitted in the fitting hole 33, and a female screw portion 14 is formed on the front end surface 15 of the rotary spindle 12. The fixing bolt 4 is inserted into the through hole 37 of the boss portion 31, and the fixing bolt 4 is fastened to the female screw portion 14 exposed from the through hole 37 to fix the blade mount 3 to the rotary spindle 12. At this time, the head 41 of the fixing bolt 4 is housed in the circular recess 35 of the boss portion 31, and the head 41 of the fixing bolt 4 does not protrude from the tip surface 34 of the boss portion 31. The head 41 of the fixing bolt 4 is formed with a recess 42 into which a tool such as a wrench is inserted.

  The cutting blade 2 is a hub blade, and is configured by attaching a cutting blade (grinding stone) 22 to the outer periphery of a substantially disc-shaped hub base 21. The cutting blade 22 is formed in a ring shape, for example, by combining diamond abrasive grains with a bonding material. A mounting hole 23 to be inserted into the outer periphery of the boss portion 31 is formed at the center of the hub base 21. When the boss portion 31 is inserted into the mounting hole 23 of the hub base 21, the boss portion 31 protrudes from the hub base 21. A male screw portion 38 is formed on the outer peripheral surface of the protruding portion of the boss portion 31. The cutting blade 2 is fixed to the blade mount 3 by tightening a ring-shaped fixing nut 6 to a male screw portion 38 protruding from the hub base 21.

  By the way, as shown in FIG. 2A, peripheral members such as a wheel cover 7 exist around the spindle 1, and it is difficult to attach the cutting blade 2 to the blade mount 3. That is, the wheel cover 7 protrudes from the boss portion 31 of the blade mount 3 in the mounting direction (rotating axis direction) of the cutting blade 2, and the mounting hole 23 of the cutting blade 2 is inserted into the boss portion 31 while avoiding the wheel cover 7. I have to let it. As shown in FIG. 2B, since the clearance C between the cutting blade 22 of the cutting blade 2 and the wheel cover 7 is narrow, the cutting blade 22 of the cutting blade 2 may collide with the wheel cover 7.

  Therefore, in the present embodiment, before the cutting blade 2 is mounted on the blade mount 3, the blade mounting tool 5 (see FIG. 3) is attached to the tip of the boss portion 31, and the boss portion 31 is substantially extended. Yes. As a result, when the cutting blade 2 is mounted on the blade mount 3, the mounting hole 23 of the cutting blade 2 is inserted into the boss portion 31 on the front side of the wheel cover 7 so that the cutting blade 2 collides with the wheel cover 7. It is preventing.

  Hereinafter, the blade mounting tool according to the present embodiment will be described in detail. FIG. 3 is an explanatory diagram of the blade mounting tool according to the present embodiment. 3A shows a state before the blade mounting tool is attached to the boss portion, and FIG. 3B shows a state after the blade mounting tool is attached to the boss portion.

  As shown in FIGS. 3A and 3B, the blade mounting tool 5 is attached to the boss 31 of the wheel mount 3 and is cut by the cylindrical blade (rod-shaped) mounting guide 51 extending from the tip of the boss 31 ( 1) is guided to the boss 31. The mounting guide portion 51 is formed in a cylindrical shape having an outer diameter equivalent to that of the boss portion 31 with a material having good slipperiness such as nylon. A corner portion 54 on one end side of the mounting guide portion 51 is chamfered so that the mounting guide portion 51 can be easily inserted into the mounting hole 23 (see FIG. 1) of the cutting blade 2. Further, a positioning convex portion 52 that positions the mounting guide portion 51 with respect to the boss portion 31 is formed at the other end of the mounting guide portion 51.

  The positioning convex portion 52 protrudes from the center of the mounting surface 55 on the other end side of the mounting guide portion 51 and is engaged with the concave portion 42 of the fixing bolt 4 for the blade mount 3. Thereby, the mounting guide 51 is positioned with respect to the boss 31 so that the outer peripheral surface 56 of the mounting guide 51 and the outer peripheral surface 39 of the boss 31 are flush with each other. In this case, the positioning convex portion 52 protrudes from the mounting surface 55 with a length that fits in the concave portion 42 of the fixing bolt 4, and the head 41 of the fixing bolt 4 does not protrude from the distal end surface 34 of the boss portion 31 as described above. Therefore, the mounting surface 55 of the mounting guide portion 51 is brought into contact with the distal end surface 34 of the boss portion 31 in a positioned state.

  A plurality of magnets 53 are embedded in the mounting surface 55 of the mounting guide portion 51 around the positioning convex portion 52 with one surface exposed. As a result, when the mounting surface 55 of the mounting guide 51 is brought into contact with the tip surface 34 of the boss portion 31, the mounting surface 55 of the mounting guide 51 is fixed to the tip surface 34 of the boss 31 by the magnetic force of the magnet 53. The In the present embodiment, the positioning convex portion 52 is engaged with the concave portion 42 of the fixing bolt 4 located in the circular concave portion 35 of the boss portion 31. However, the present invention is not limited to this configuration. The positioning convex part 52 should just be formed so that it may engage in the circular recessed part 35 of the boss | hub part 31, and may be formed according to the shape of the circular recessed part 35. FIG. For example, it may be formed in a ring shape so as to engage with the inner peripheral surface 59 of the circular recess 35.

  In the blade mounting tool 5 configured in this way, the positioning convex portion 52 of the mounting guide portion 51 is aligned with the concave portion 42 of the fixing bolt 4, and it depends on the magnetic force of the magnet 53 on the mounting surface 55 of the mounting guide portion 51. And fixed to the tip of the boss 31. The blade mounting tool 5 having the same diameter is fixed to the boss portion 31 in a positioned state, and the boss portion 31 is substantially extended by the length of the cylindrical mounting guide portion 51. In this case, since the blade mounting tool 5 is fixed to the boss 31 of the magnetized material by the magnetic force of the magnet 53, the blade mounting tool 5 can be easily attached to and detached from the boss 31. Further, the boss portion 31 is extended to make it easy to attach the cutting blade 2 without changing the configuration of the existing blade mount 3.

  With reference to FIG. 4, the cutting blade mounting procedure will be described. FIG. 4 is an explanatory diagram of a cutting blade mounting procedure according to the present embodiment. 4A shows a state before mounting of the cutting blade, FIG. 4B shows a state during mounting of the cutting blade, and FIG. 4C shows a state after mounting of the cutting blade.

  As shown in FIG. 4A, first, the positioning convex portion 52 of the blade mounting tool 5 is aligned with the concave portion 42 of the fixing bolt 4, and the mounting surface 55 of the blade mounting tool 5 is brought into contact with the tip surface 34 of the boss portion 31. As a result, the mounting surface 55 of the blade mounting tool 5 is fixed to the tip surface 34 of the boss portion 31 by the magnetic force of the magnet 53, and the outer peripheral surface 56 of the blade mounting tool 5 is flush with the outer peripheral surface 39 of the boss portion 31. By attaching the blade mounting tool 5 to the boss portion 31, the blade mounting tool 5 protrudes toward the front side of the wheel cover 7 around the blade mount 3 in the mounting direction of the cutting blade 2. As a result, the cutting blade 2 can be aligned with the blade mount 3 on the front side of the wheel cover 7.

  Next, as shown in FIG. 4B, the mounting hole 23 of the cutting blade 2 is aligned with the cylindrical mounting guide portion 51 of the blade mounting tool 5, and the mounting hole 23 of the cutting blade 2 is moved to the mounting guide portion 51. Let them plug in. In this case, since the mounting guide 51 protrudes toward the front side of the wheel cover 7, the cutting blade 2 collides with the wheel cover 7 when the mounting hole 23 of the cutting blade 2 is aligned with the mounting guide 51. There is nothing. Therefore, the mounting hole 23 of the cutting blade 2 can be aligned with the mounting guide 51 without being aware of the clearance C between the wheel cover 7 and the cutting blade 22 of the cutting blade 2.

  Further, since the corner 54 on one end side of the mounting guide portion 51 is chamfered, the mounting hole 23 of the cutting blade 2 can be easily inserted into the mounting guide portion 51. After inserting one end side of the mounting guide part 51 into the mounting hole 23 of the cutting blade 2, the cutting blade 2 is slid to the boss part 31 along the outer peripheral surface 56 of the mounting guide part 51. Since the mounting guide portion 51 is formed of a material having good slipperiness, the cutting blade 2 can be slid on the outer peripheral surface 56 of the mounting guide portion 51. Further, since the outer peripheral surface 56 of the mounting guide portion 51 and the outer peripheral surface 39 of the boss portion 31 are flush with each other, no catching occurs at the boundary between the mounting guide portion 51 and the boss portion 31 when the cutting blade 2 slides. .

  Next, as shown in FIG. 4C, after the cutting blade 2 is slid to the boss portion 31, one side 24 of the cutting blade 2 (hub base 21) is brought into contact with the fixed flange 32 of the blade mount 3. Thereby, the front end side of the boss part 31 protrudes from the mounting hole 23 of the cutting blade 2. Then, after the blade mounting tool 5 is pulled away from the tip of the boss portion 31 against the magnetic force of the magnet 53, the ring-shaped fixing nut 6 is fastened to the male screw portion 38 of the boss portion 31 protruding from the cutting blade 2. In this manner, the cutting blade 2 is fixed to the blade mount 3 while being sandwiched between the fixing flange 32 and the fixing nut 6.

  As described above, according to the present embodiment, the boss portion 31 of the blade mount 3 is substantially extended by attaching the blade mounting tool 5 to the tip of the boss portion 31 of the blade mount 3. At this time, the blade mounting tool 5 is protruded from the wheel cover 7 around the blade mount 3 in the mounting direction of the cutting blade 2, and the mounting hole 23 of the cutting blade 2 is formed on the mounting guide 51 on the front side of the wheel cover 7. Can be inserted. Therefore, the cutting blade 2 does not collide with the wheel cover 7 when the mounting hole 23 of the cutting blade 2 is inserted into the tip of the mounting guide portion 51. Further, since the outer peripheral surface 39 of the boss portion 31 and the outer peripheral surface 56 of the mounting guide portion 51 are flush with each other, the cutting blade 2 can be smoothly guided to the boss portion 31. Thus, the blade mount 3 can be mounted without damaging the cutting blade 2 regardless of the skill of the operator. Further, since the blade mounting tool 5 is mounted on the boss portion 31 by the magnetic force of the magnet 53, the blade mounting tool 5 can be easily attached to and detached from the boss portion 31. Furthermore, the blade mounting tool 5 can be attached without changing the configuration of the existing blade mount 3.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited to this, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the present embodiment described above, the blade mounting tool 5 is detachably fixed to the tip of the boss portion 31 by the magnetic force of the plurality of magnets 53, but is not limited to this configuration. The number and shape of the magnets 53 are not limited. For example, the blade mounting tool 5 may be detachably fixed to the tip of the boss portion 31 by the magnetic force of the single ring-shaped magnet 53.

  In the present embodiment described above, one side of the magnet 53 is exposed from the mounting surface 55 of the mounting guide portion 51, but is not limited to this configuration. It is only necessary that the blade mounting tool 5 can be attached to the tip of the boss 31 by the magnetic force of the magnet 53. For example, the magnet 53 may be embedded in the mounting guide portion 51 as long as it has a magnetic force sufficient to attach the blade mounting tool 5 to the tip of the boss portion 31.

  In the above-described embodiment, the outer diameter of the mounting guide portion 51 is formed to be uniform, but the present invention is not limited to this configuration. The mounting guide portion 51 only needs to have the same outer diameter as the boss portion 31, and the outer diameter of the mounting guide portion 51 does not need to be uniformly formed to be equal to the outer diameter of the boss portion 31. For example, it is formed in a tapered shape such that the outer diameter increases from one end side to the other end side of the mounting guide portion 51, and is formed to be flush with the boss portion 31 on the other end side of the mounting guide portion 51. May be. Even with such a configuration, it is possible to smoothly guide the cutting blade 2 to the boss 31.

  As described above, the present invention has the effect of being able to be mounted on the blade mount without damaging the cutting blade regardless of the skill of the operator, and in particular, the clearance between the wheel cover and the cutting blade is narrow. Useful in cases.

DESCRIPTION OF SYMBOLS 1 Spindle 2 Cutting blade 3 Blade mount 4 Fixing bolt 5 Blade installation tool 7 Wheel cover 12 Spindle (spindle shaft)
21 Hub base 22 Cutting blade 23 Mounting hole 31 Boss part 32 Fixing flange 35 Circular recess (recess)
39 Outer peripheral surface of boss (outer periphery)
41 Head part 42 Concave part 51 Mounting guide part 52 Positioning convex part 53 Magnet 56 Outer peripheral surface (outer periphery) of the mounting guide part

Claims (1)

A blade mount that includes a boss portion having a concave portion formed at the tip and having magnetism and a fixing flange formed integrally with the boss portion, and is fixed to the tip of the rotary spindle. A blade mounting tool for mounting a cutting blade including a hub base having a mounting hole to be inserted into the cutting base and a cutting blade formed on the outer periphery of the hub base,
Removably fixed to the tip of the boss portion of the blade mount,
Have a same outer diameter as the outer diameter of the boss portion, said a mounting guide portion of the bar-shaped extending one end side from the tip of the boss portion, is formed at the other end of said mounting guide portion in the tip recess of the boss portion A positioning convex portion for positioning the mounting guide portion so that the outer periphery of the mounting guide portion and the outer periphery of the boss portion are flush with each other, and a magnet disposed on the mounting guide portion. And
The positioning projection is engaged with the recess of the boss, the other end of the mounting guide is attached to the tip of the boss of the blade mount by a magnetic force , and the boss is extended. A blade mounting tool, wherein the mounting hole of the cutting blade is inserted from one end side of the mounting guide portion and slid to the boss portion to mount the cutting blade on the fixed flange.

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