TWI699258B - Forming grindstone tools - Google Patents

Abstract

The invention provides a shaped grindstone tool which can easily discharge grinding debris and can supply sufficient grinding water to the processing point.

The forming grindstone tool of the present invention is installed on the rotating shaft of a processing device that grinds the side surface of a plate-shaped workpiece to be processed into a specified shape. It is provided with a central mounting hole into which the rotating shaft is fitted, and a corresponding After processing, the side shape of the workpiece is a ring-shaped base on the outer peripheral surface, and a grinding stone part containing abrasive grains fixed on the outer peripheral surface of the base by electroplating, and along the circumference of the base on the surface side of the grinding stone part The direction is provided with continuous spiral grooves.

Description

Forming grindstone tools Invention field

The present invention relates to a forming grindstone tool using a processing device for grinding the side surface of a workpiece to process it into a specified shape.

Background of the invention

A memory medium such as a memory card used by inserting various electronic devices is formed by, for example, sealing the memory element mounted on the wiring board with molding resin or the like. This storage medium has a characteristic shape on the side surface, so that the insertion direction and the inside and outside of the electronic device can be fixed.

In order to efficiently realize the characteristic shape as described above, there has been proposed a processing device that fixes the plate-shaped workpiece constituting the memory medium to a jig to expose the side surface, and then polishes the side surface with a shaped grindstone tool (for example, see Patent Document 1). The shaped grindstone tool is formed into a disc shape (circular shape) with a thickness corresponding to the size of the workpiece, and has an outer peripheral surface corresponding to the characteristic shape of the side surface.

The grinding amount of the workpiece to be polished by this shaped grindstone tool is determined by the characteristic shape of the side surface, and is not the same for all sides. That is, the amount of wear on the outer peripheral surface of the shaping grindstone tool is random in the thickness direction of the shaping grindstone tool. In this case, because it corresponds to the amount of wear The life of the largest area determines the life of the overall forming grindstone tool, so it is not economical.

In order to solve this problem, a forming grindstone tool in which a fine groove parallel to the rotating shaft is provided in an area where the amount of wear on the outer peripheral surface is large has been proposed (for example, see Patent Document 2). When using this type of shaped grindstone tool, if the area where the groove is provided is worn, the abrasive grains fixed on the inner wall of the groove will be exposed to the outer peripheral surface, and the grinding ability is maintained. Therefore, compared with the shaped grindstone tool without grooves , The life span will be extended.

【Prior Technical Literature】

[Patent Document 1] JP 2007-328492 A

[Patent Document 2] JP 2009-45723 A

Summary of the invention

However, when using the above-mentioned shaped grindstone tool, there are cases where the grinding debris generated by grinding enters the groove and is difficult to discharge, or it is impossible to supply a sufficient amount of grinding water to the processing point.

The present invention is proposed in view of related problems, and its purpose is to provide a shaped grindstone tool that can easily discharge grinding debris and can supply a sufficient amount of grinding water to the processing point.

According to the present invention, the provided forming grindstone tool is a tool that is installed on the side surface of a plate-shaped workpiece to be processed into a specified shape. The forming grindstone tool of the rotating shaft of the working device has: a central mounting hole into which the rotating shaft is fitted, and an annular base corresponding to the outer peripheral surface of the side surface of the processed object, and, including The grindstone part of the abrasive grains fixed on the outer peripheral surface of the base by electrodeposition is characterized in that a continuous spiral groove is provided on the surface of the grindstone part along the circumferential direction of the base.

In the present invention, the surface of the grindstone portion has a first area located at the innermost position in the radial direction of the base and a second area located at a position further outside the first area in the radial direction of the base Preferably, the spiral groove is formed in the second area.

Since the shaped grindstone tool of the present invention is provided with continuous spiral grooves on the surface of the grindstone portion along the circumferential direction of the base, the grinding debris generated by the grinding of the workpiece will follow the rotation of the shaped grindstone tool It is discharged along the spiral groove. Moreover, since the grinding water flows along the spiral groove with the rotation of the shaped grinding stone tool, a sufficient amount of grinding water can be supplied to the processing point.

2‧‧‧Grinding device (processing device)

4‧‧‧Frame

4a‧‧‧Opening

6‧‧‧Support Desk

8‧‧‧Dust and drip-proof cover

10‧‧‧Holding fixture

11‧‧‧Processed objects

11a‧‧‧The first side of the processed object

11b‧‧‧The second side of the processed object

12‧‧‧Operation Panel

14‧‧‧First grinding unit

16‧‧‧The second grinding unit

18‧‧‧Camera

20‧‧‧Jig body

20a‧‧‧The first insertion hole

20b‧‧‧The second insertion hole

22‧‧‧The first shaft sleeve

24‧‧‧The first shaft

24a‧‧‧Installation tool

24b‧‧‧Gland nut

26‧‧‧The first forming grinding stone tool

28‧‧‧The first grinding water supply nozzle

30‧‧‧Abutment

30a‧‧‧Mounting hole

30b‧‧‧Outer peripheral surface

32‧‧‧Millstone Department

32a‧‧‧surface

34‧‧‧Second shaft sleeve

36‧‧‧The second shaft

36a‧‧‧Installation tool

36b‧‧‧Gland nut

38‧‧‧The second forming grinding stone tool

40‧‧‧The second grinding water supply nozzle

42‧‧‧Abutment

42a‧‧‧Mounting hole

42b‧‧‧Outer peripheral surface

42c‧‧‧Region 1

42d‧‧‧Region 2

44‧‧‧Millstone Department

44a‧‧‧surface

44b‧‧‧Region 1

44c‧‧‧Region 2

44d‧‧‧Groove

[Fig. 1] A perspective view schematically showing a configuration example of the polishing device.

[Fig. 2] A perspective view schematically showing the structure of the holding jig.

[Fig. 3] A partial cross-sectional side view schematically showing the first forming grindstone tool mounted on the first rotating shaft.

[Figure 4] A schematic representation of the second forming grindstone mounted on the second rotating shaft Partial cross-sectional side view of the tool.

[Fig. 5] Fig. 5(A) is a schematic side view of the shape of the outer peripheral portion of the second forming grindstone tool, and Fig. 5(B) is an enlarged side view of the schematic diagram part of Fig. 5(A).

[Fig. 6] Fig. 6(A) is a schematic side view of the state where the holding jig is fixed on the support table, and Fig. 6(B) is a schematic side view of the state where one side of the workpiece is processed.

[FIG. 7] FIG. 7(A) is a schematic schematic side view of the processed state of the other side of the workpiece, and FIG. 7(B) is a schematic schematic perspective view of the processed product after processing.

Detailed description of the preferred embodiment

The embodiments of the present invention will be described with reference to the drawings. First, a configuration example of a polishing device (processing device) using the shaped grindstone tool of this embodiment will be described. FIG. 1 is a perspective view schematically showing a configuration example of a polishing device (processing device) 2. As shown in FIG. 1, the polishing apparatus 2 of this embodiment is equipped with the base 4 which mounts each component.

On the upper surface of the front side of the machine base 4, a rectangular opening 4a is formed in the X-axis direction (left-right direction, processing feed direction). In the opening 4a, a support table 6, an X-axis movement mechanism (not shown) that moves the support table 6 in the X-axis direction, a dust and drip-proof cover 8 that covers the X-axis movement mechanism, and the like are arranged.

For example, a fixture (not shown) is provided on the upper surface of the support table 6, and a holding jig 10 holding a plurality of workpieces 11 (see FIG. 2 and the like) is detachably fixed. The front end of the base 4 is provided with an operation for inputting grinding conditions, etc. As panel 12. This operation panel 12 is connected to a control unit (not shown) that controls each constituent element.

A first polishing unit 14 for polishing the first side surface 11a (see FIG. 2 etc.) of the workpiece 11 is arranged above the opening 4a. The first polishing unit 14 is supported by a first YZ-axis moving mechanism (not shown) provided inside the base 4. The first YZ-axis moving mechanism moves the first polishing unit 14 in the Y-axis direction (front-rear direction) and the Z-axis direction (up-down direction).

In the vicinity of the first polishing unit 14, a second polishing unit 16 for polishing the second side surface 11b (see FIG. 2 etc.) of the workpiece 11 is arranged. The second polishing unit 16 is supported by a second YZ-axis moving mechanism (not shown) provided inside the base 4. The second YZ-axis moving mechanism moves the second polishing unit 16 in the Y-axis direction and the Z-axis direction.

A camera 18 for imaging the first side surface 11a or the second side surface 11b of the workpiece 11 held by the holding jig 10 is provided at a position adjacent to the first polishing unit 14 and the second polishing unit 16. The camera 18 is provided with an optical system such as light-transmitting and an imaging element such as a CCD, and transmits the image formed by imaging to the control unit.

FIG. 2 schematically shows a perspective view of the structure and the like of the holding jig 10. As shown in FIG. 2, the holding jig 10 has a jig body 20 that is rectangular in plan view. On the upper surface side of the jig body 20, a row of a plurality of first insertion holes 20a corresponding to the plate-shaped workpiece 11 is provided. Each first insertion hole 20a has a shape that can be inserted into the second side surface 11b side of the workpiece 11, and if the workpiece 11 is inserted into the first insertion hole 20a, the first side surface 11a will be exposed upward.

The plurality of first insertion holes 20a fix the holding jig 10 to the support In the state of the holder 6, it is arranged in a line along the X-axis direction. Thereby, a plurality of workpieces 11 inserted into the first insertion hole 20a can be processed by the first polishing unit 14 or the second polishing unit 16 as a whole. The workpiece 11 inserted into the first insertion hole 20a is fixed to the jig body 20 by a fixing mechanism (not shown).

At positions adjacent to the plurality of first insertion holes 20a, a plurality of second insertion holes 20b are provided in a row. Each second insertion hole 20b has a shape that can be inserted into the first side surface 11a side of the workpiece 11, and if the workpiece 11 is inserted into the second insertion hole 20b, the second side surface 11b will be exposed upward.

The plurality of second insertion holes 20b are arranged in a line in the X-axis direction in a state where the holding jig 10 is fixed to the support table 6. Thereby, a plurality of workpieces 11 inserted into the second insertion hole 20b can be processed by the first polishing unit 14 or the second polishing unit 16 as a whole. The workpiece 11 inserted into the second insertion hole 20b is fixed to the jig body 20 by a fixing mechanism (not shown).

The workpiece 11 is, for example, a memory medium such as a memory card formed by sealing a memory element mounted on a wiring board with a molded resin, and has a first side surface 11a to be processed by the first polishing unit 14 and a second side surface 11a to be processed by the first polishing unit 14 The second side surface 11b processed by the polishing unit 16. In addition, the workpiece 11 does not need to be a storage medium. For example, an arbitrary substrate or the like having side surfaces may be used as the workpiece 11.

As shown in FIG. 1, the first polishing unit 14 includes a cylindrical first shaft sleeve 22. Inside the first rotating shaft sleeve 22, a first rotating shaft 24 constituting a rotating shaft parallel to the Y-axis direction is housed. A rotation drive source (not shown) such as a motor that rotates the first rotation shaft 24 is connected to the rear end of the first rotation shaft 24.

The front end side of the first shaft 24 protrudes from the first shaft sleeve 22 unit. A disc-shaped (annular) first shaping grindstone tool 26 is attached to the front end of the first rotating shaft 24. The first polishing water supply nozzle 28 that sprays polishing water such as pure water to the processing point of the first shaping grindstone tool 26 is arranged near the first shaping grindstone tool 26.

FIG. 3 schematically shows a partial cross-sectional side view of the first forming grindstone tool 26 attached to the first rotating shaft 24. As shown in FIG. 3, the 1st shaping|molding grindstone tool 26 has the base 30 formed in the shape of a disc (circular shape) with metal materials, such as stainless steel or aluminum. The base 30 has a thickness capable of processing the entire first side surface 11a of the workpiece 11.

In the center of the base 30, a mounting hole 30a is provided for fitting with a mounting tool 24a mounted on the front end of the first rotating shaft 24. If the mounting tool 24a is fitted to the mounting hole 30a of the base 30, and then the gland nut 24b is fastened to the front end of the mounting tool 24a, the first forming grindstone tool 26 can be mounted on the first rotating shaft 24.

This base 30 has an outer peripheral surface 30b corresponding to the shape of the first side surface 11a of the workpiece 11 after processing. On the outer peripheral surface 30b, there is formed a grindstone portion 32 for fixing abrasive grains such as diamonds by an electrodeposition method such as nickel plating. In the outer peripheral portion of the first shaping grindstone tool 26, the exposed surface 32a of the grindstone portion 32 constitutes a polishing surface for polishing the first side surface 11a of the workpiece 11. The grindstone portion 32 is formed, for example, with a thickness of approximately 5 mm to 20 mm, and the surface 32a reflects the shape of the outer peripheral surface 30b of the base 30.

Similarly, the second polishing unit 16 includes a cylindrical second shaft sleeve 34. Inside the second rotating shaft sleeve 34, a second rotating shaft 36 constituting a rotating shaft parallel to the Y-axis direction is housed. A rotation drive source (not shown) such as a motor that rotates the second rotation shaft 36 is connected to the rear end of the second rotation shaft 36.

The front end side of the second rotating shaft 36 protrudes from the second rotating shaft sleeve 34 to the outside. A disc-shaped (annular) second shaping grindstone tool 38 is attached to the front end of the second rotating shaft 36. The second polishing water supply nozzle 40 that sprays polishing water such as pure water to the processing point of the second shaping grindstone tool 38 is arranged near the second shaping grindstone tool 38.

FIG. 4 schematically shows a partial cross-sectional side view of the second forming grindstone tool 38 attached to the second rotating shaft 36. As shown in FIG. 4, the 2nd shaping|molding grindstone tool 38 has the base 42 formed in a disk shape (circular shape) with metal materials, such as stainless steel or aluminum. The base 42 has a thickness capable of processing the entire second side surface 11b of the workpiece 11.

In the center of the base 42, there is provided an attachment hole 42 a for fitting with an attachment tool 36 a attached to the front end of the second rotating shaft 36. If the mounting tool 36a is fitted to the mounting hole 42a of the base 42 and then the gland nut 36b is fastened to the front end of the mounting tool 36a, the second shaping grindstone tool 38 can be mounted on the second rotating shaft 36.

This base 42 has an outer peripheral surface 42b corresponding to the shape of the second side surface 11b of the workpiece 11 after processing. The outer peripheral surface 42b includes, for example, a first area 42c located at the innermost position in the radial direction of the base 42 and a second area 42d located at a position further outside the first area 42c in the radial direction of the base 42.

)刀具的切削(刀尖切削)等的方法來形成。溝槽的寬度為，例如，0.02mm~0.1mm左右，溝槽的深度為，例如，0.01mm~0.05mm左右，溝槽的間隔為，例如，0.1mm~1mm左右。 In the second region 42d, a continuous spiral fine groove (not shown) is provided along the circumferential direction of the base 42. This groove can be used, for example, using a tip (

) It is formed by cutting tools (tip cutting). The width of the groove is, for example, about 0.02 mm to 0.1 mm, the depth of the groove is, for example, about 0.01 mm to 0.05 mm, and the interval between the grooves is, for example, about 0.1 mm to 1 mm.

A grindstone portion 44 for fixing abrasive grains such as diamonds by nickel plating or the like is formed on the outer peripheral surface 42b. In the outer peripheral portion of the second shaping grindstone tool 38, the exposed surface 44a of the grindstone portion 44 constitutes a polishing surface for polishing the second side surface 11b of the workpiece 11. The grindstone part 44 is formed, for example, with a thickness of about 5 mm to 20 mm, and the surface 44a reflects the shape of the outer peripheral surface 42b of the base 42.

That is, the surface 44a of the grindstone portion 44 includes a first area 44b located at the innermost position in the radial direction of the base 42 and a second area 44b located at the radially outermost position of the base 42 than the first area 44b. Area 44c. In addition, on the surface 44a side of the grindstone portion 44, a groove corresponding to the groove of the outer peripheral surface 42b of the base 42 is formed.

Fig. 5(A) is a schematic side view showing the shape of the outer peripheral portion of the second shaping grindstone tool 38; Fig. 5(B) is a partially enlarged side view of Fig. 5(A). As shown in FIGS. 5(A) and 5(B), in the second area 44c constituting the surface 44a of the grindstone portion 44, along the circumferential direction of the base 42 (that is, the circumferential direction of the second shaping grindstone tool 38) ), forming a continuous spiral narrow groove 44d.

The width, depth, interval, etc. of the groove 44d correspond to the second region 42d formed on the base 42. That is, the width of the groove 44d is, for example, about 0.02 mm to 0.1 mm, the depth of the groove 44d is, for example, about 0.01 mm to 0.05 mm, and the interval of the grooves 44d is, for example, about 0.1 mm to 1 mm.

As described above, the second area 44c constituting the surface 44a of the grindstone portion 44 is located on the outside of the first area 44b in the radial direction of the base 42, and the grindstone portion 44 is located further than the first area 44b in the second area 44c. Easy to wear. Thus, by When the spiral groove 44d is provided in the second region 44c as described above, the abrasive grains fixed to the inner wall of the groove 44d are exposed as the grindstone portion 44 is worn, and the polishing ability of the second region 44c is maintained. . Thereby, the life of the second shaping grindstone tool 38 can be extended.

In addition, since the groove 44d formed in the second shaped grindstone tool 38 is formed in a continuous spiral shape along the circumferential direction of the base 42 (the circumferential direction of the second shaped grindstone tool 38), the workpiece 11 is polished The generated grinding debris will be discharged along the groove 44d along with the rotation of the second shaping grindstone tool 38, and will not remain in the groove 44d. In addition, since the grinding water flows along the groove 44 along with the rotation of the second shaping grindstone tool 38, a sufficient amount of grinding water can be supplied to the processing point.

The processing method of the workpiece 11 using the shaped grindstone tool (the second shaped grindstone tool 38) of this embodiment will be described. In the processing method of this embodiment, first, the holding jig 10 holding the workpiece 11 is fixed to the support 6. FIG. 6(A) is a schematic side view of a state in which the holding jig 10 is fixed to the support table 6. Here, the workpiece 11 whose first side surface 11a is exposed above is positioned in the processing area of the first shaping grindstone tool 26, and the other workpiece 11 whose second side surface 11b is exposed above is positioned on the second shaping grindstone tool 38 processing area.

Next, the rotating first shaping grindstone tool 26 is lowered to a height where it touches the first side surface 11a of the workpiece 11, and at the same time, the rotating second shaping grindstone tool 38 is lowered until it touches the other workpiece 11 The height of the second side surface 11b. The lowering amount of the first shaping grindstone tool 26 and the second shaping grindstone tool 38 is adjusted in accordance with the size of the workpiece 11 after processing.

In this state, the support table 6 is moved in the X-axis direction, whereby the first side surface 11a of the workpiece 11 is ground with the first shaping grindstone tool 26, and the other workpiece is ground with the second shaping grindstone tool 38 The second side surface 11b of 11 is processed into a specified shape. FIG. 6(B) is a schematic side view of a state in which one side surface of the workpiece 11 has been processed. In addition, from the first polishing water supply nozzle 28 and the second polishing water supply nozzle 40, polishing water such as pure water is supplied to the processing point of the first shaping grindstone tool 26 and the processing point of the second shaping grindstone tool 38, respectively.

As shown in FIG. 6(B), after one side surface of the workpiece 11 is processed, for example, the holding jig 10 is turned upside down, and the other side surface of the workpiece 11 is processed. The processing of the other side of the workpiece 11 is completed in the same process as the processing of the one side. FIG. 7(A) is a schematic schematic side view of the state where the other side of the workpiece 11 is processed, and FIG. 7(B) is a schematic schematic perspective view of the processed product 11 after processing.

As shown in FIG. 7(B), the workpiece 11 processed by the processing method of this embodiment has a substantially flat first side surface 11a and a characteristic-shaped second side surface 11b. With the second side surface 11b of this characteristic shape, it is possible to specify, for example, the insertion direction of the workpiece 11 to be inserted into the electronic device, and the inside and outside of the workpiece 11, etc. In addition, the corners of the workpiece 11 are chamfered at the same time when, for example, the first side surface 11a and the second side surface 11b of the workpiece 11 are processed.

As described above, the second shaping grindstone tool 38 of this embodiment has continuous spiral grooves 44d on the surface 44a of the grindstone portion 44 along the circumferential direction of the base 42. Research produced by grinding The abrasion debris is discharged along the spiral groove 44d along with the rotation of the second shaping grindstone tool 38. In addition, since the grinding water flows along the spiral groove 44d along with the rotation of the second shaping grindstone tool 38, a sufficient amount of grinding water can be supplied to the processing point.

In addition, the present invention is not limited to the description of the above embodiments, and can be implemented with various changes. For example, in the above embodiment, although one continuous groove 44d is formed in the second forming grindstone tool 38, the present invention is not necessarily limited to this aspect. For example, a plurality of continuous grooves may be formed.

In addition, in the above-mentioned embodiment, although the groove 44d on the surface 44a of the grindstone portion 44 is realized by forming the groove on the outer peripheral surface 42b of the base 42, the groove 44d on the outer peripheral surface 42b of the base 42 may not be formed. The groove is directly formed on the surface 44a of the grindstone portion 44.

In addition, the structure, method, etc. of the above-mentioned embodiments can be implemented with appropriate changes as long as they do not depart from the scope of the object of the present invention.

38‧‧‧The second forming grinding stone tool

44a‧‧‧surface

44b‧‧‧Region 1

44c‧‧‧Region 2

44d‧‧‧Groove

Claims (2)

A shaped grindstone tool is a shaped grindstone tool installed on a rotating shaft of a processing device that grinds the side surface of a plate-shaped workpiece to be processed into a specified shape, and is characterized by having: a ring-shaped base, which There is a mounting hole in the center where the rotating shaft is fitted, and an outer peripheral surface corresponding to the shape of the side surface of the processed object after processing, and a grindstone portion, which includes the outer peripheral surface fixed to the base by electrodeposition Abrasive grains; on the surface side of the grindstone part, a continuous spiral groove is provided along the circumferential direction of the base. The width of the spiral groove is about 0.02mm~0.1mm and the depth is 0.01mm~0.05 about mm. The forming grindstone tool according to claim 1, wherein the surface side of the grindstone portion has: a first area located at the innermost position in the radial direction of the base, and a first area located more than the radial direction of the base In the second area at a position further outside the first area, the spiral groove is formed in the second area.

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