TWI426000B - Drilling method of automatic drill bit - Google Patents

Description

Automatic grinding method for drill bit

The invention provides an automatic aligning grinding method for a drill bit, in particular to an already worn micro drill bit, and relates to an automatic reference position correction and grinding technique of the blade surface of the micro drill bit, and an image for correcting and grinding the blade surface Detector, grinder and swing seat.

According to the micro drill, the drilling tool can be reduced to a diameter of about 0.1 mm. It has been widely used in the drilling of printed circuit boards. However, after several times of use, the drill has several blades at the tip of the blade. The surface is easily worn and damaged, and the drill bit is unusable; in order to prolong the service life of the drill bit, the current stage is to re-use the blade of the worn drill bit by a grinder to make the blade surface of the blade portion. The condition for drilling the correct aperture is recovered. The drill uses an image (such as a Charge Coupled Device, CCD) detector to correct the reference position of the face of the drill before re-grinding with the grinder. At present, the above-mentioned fine drills are usually subjected to grinding processing operations using automated production lines and processing stations to increase the rate of processing.

It is also known that the automatic processing operation of the above-mentioned fine drill bit is conventionally implemented around a turntable that can be rotated in a fixed manner; for example, the patent No. I295727 of the applicant's previous application for the announcement mainly refers to various correction, detection and discrimination of the drill bit. And processing and other instruments, arranged in a circular path around the turntable according to the order of use thereof, and forming a plurality of processing zone stations around the turntable, and passing the transfer bit one by one through each processing zone station to receive the processing zones one by one The instrument in the station performs operations such as calibration, detection, discrimination or processing; However, the disadvantage is that the turntable can only be rotated in a single direction. If the surface of one of the drill bits is found to be below the standard after processing, the turntable cannot reversely transfer the under-standard drill bit to the previous processing area. Re-processing of the station can only remove the substandard drill bit out of the production line, resulting in a problem that the processing efficiency is difficult to increase.

In addition, there is another automated processing technology for fine drill bits on the market; for example, the Taiwanese application No. M295249, which was previously filed by the applicant, mainly arranges instruments for calibration, detection, discrimination and processing of drill bits in a straight path. And a reciprocating seat body (such as a rotary air cylinder) is disposed on the straight path, and the seat body is usually driven by a motor mating belt or a ball lead screw, and the transfer bit can be moved along the straight path to Accepting each instrument for calibration, detection, discrimination, or machining, and can reversely transfer the substandard drill bit on the straight path, and re-process the substandard drill to ensure its processing efficiency; The processing rate is still limited by the length of the linear path, and the length of the linear path is limited by the volume of each instrument, so it is difficult to greatly increase the processing rate.

In addition, the above-mentioned turntable and its circular path, and the seat body and its straight path occupy a large configuration space, which makes it difficult to effectively save the problem of its construction; therefore, the above problems need to be improved.

The object of the present invention is to overcome the above problems in the prior art, in which the drill bit is transferred by a circular path and a linear path, which causes difficulty in processing rate and efficiency, and occupies a large configuration space, which makes it difficult to effectively save the construction cost. .

In order to achieve the above object, the present invention provides an automatic aligning grinding of a drill bit. The method comprises the following steps: taking a swinging seat, the swinging seat is capable of reciprocatingly swinging along an arc path away from and close to a plane of the machine, and sequentially correcting a corrected position and detecting on the curved path of the swinging a position and a grinding position, wherein the detecting position is between the correcting position and the grinding position; causing the swinging seat to swing to the correcting position, using a clamp that is movable between the feeding area of the drill bit and the swinging seat a feeding bit is inserted into the swinging seat; a first image detector is used to sense a blade of the drill bit at the correcting position, and the bit is rotated by the swinging seat to correct the blade a plurality of blade faces of the portion to a reference position; causing the swinging seat to hold the drill bit to the grinding position, and grinding the blade face at the grinding position using a grinder; and continuing to swing the bit to swing the bit to Detecting the position and sensing the blade surface at the detecting position by using a second image detector to confirm the grinding condition of the blade face; and when confirming that the blade surface grinding is completed, the swing seat is Holding the drill bit to the correction position, and using the clamp to transfer the drill bit to the feeding zone; and confirming that the blade face is not ground, the swinging seat clamps the drill bit to the grinding position, and The blade face is ground at the grinding position using the grinder.

According to this, the micro drill bit can be transferred by the swing seat which can reciprocate on the arc path to improve the processing rate and efficiency of the grinding bit surface; in addition, the first image detector, the second image detector and the grinder are The sequence is arranged on the arc path, which can effectively reduce the configuration area, thereby saving construction this.

In addition, the present invention also includes: a cleaning position is planned on the arc path, between the detecting position and the grinding position, and the drill bit is swung with the swing seat after the grinding of the blade surface The cleaning position is used to drive a sticking block to adhere and release the blade surface in the cleaning position.

Further, before the blade surface is received by the grinding machine, the blade is held at the grinding position by using a clamper, and after the blade is ground by the grinding machine, the clamp is released from the blade. .

The step of grinding the blade surface by the grinder includes a first surface grinding and a second surface grinding. After the grinding machine performs the first surface grinding on the blade surface, the swinging seat clamps the drill bit to rotate. a specific angle, and the grinding machine performs the second surface grinding on the blade surface.

The blade surface confirms the unpolished drill bit, and the grinder seats the front end of the grinding machine to compensate for the rotation of the drill bit to correct the blade face to a correct angular position capable of receiving the grinding. The swing seat corrects the correct angular position of the blade surface at the detecting position; or the swing seat corrects the correct angular position of the blade face during the swing from the detecting position to the grinding position.

The blade surface confirms the unpolished drill bit, and the grinding machine grinds the blade in front of the blade, so that the swing seat clamps the drill bit, and compensates a certain distance along the axial direction of the drill bit to correct the blade face to A correct distance position that can accept the grinding.

The first image detector senses the damaged drill bit and uses the clamp to transfer to a defective area of a drill bit.

When the second image detector confirms that the blade surface is not completely polished, the swinging seat clamps the drill bit to the correction position, and uses the clamp to transfer the drill bit to a defective area of the drill bit.

However, in order to clearly and fully disclose the present invention, the preferred embodiments are illustrated, and the detailed description of the embodiments will be described as follows:

Referring to FIG. 1 , a flow chart of a preferred embodiment of the present invention is disclosed, and the automatic alignment grinding method of the drill bit of the present invention is described with reference to FIG. 2 and FIG. 3 , which includes the following implementation steps:

In step S10, the method of the present invention is started.

In step S11, a swinging seat 1 is disposed on a machine table plane 100 for implementing the method of the present invention. The machine table plane 100 is provided with a feeding area 7 of a drill bit 9, and the swinging seat 1 is pivotally placed for feeding. The area 7 is close to the edge, and the supply area 7 is provided with a plurality of drill boxes 90 for accommodating a plurality of drill bits 9. The drill bit 9 can be taken out by the diamond box 90 in this embodiment and put back after performing the grinding process. The drill box 90 is originally placed, so that the feed zone 7 can simultaneously become the feed end and the discharge end of the drill bit 9 in this embodiment; the swing seat 1 can actually be a rotary pneumatic cylinder, and the top of the rotary pneumatic cylinder has a The clamping portion 11 of the drill bit 9 can be clamped and released. The drill bit 9 can rotate with the rotation of the clamping portion 11. The bottom of the swinging seat 1 has a pivoting portion 12 for pivoting the swinging seat 1 to the feeding area 7 a motor is disposed on the proximal side of the swinging seat 1 (not drawn), and the motor and the pivoting portion 12 are coupled to each other, so that the swinging seat 1 can be driven by the motor via the pivoting portion 12 to perform the approaching and approaching the plane of the machine 100. An arc path 10 is reciprocatingly oscillated (as shown in Figures 8 to 10), and is circulated on the oscillating arc path 10 101 out of a correction position, a detection position 102 and a RESEARCH a grinding position 104 (shown in FIG. 4); the arcing path of the swinging seat 1 includes a cleaning position 103 between the detecting position 102 and the grinding position 104; in the present embodiment, the correction, detection, The cleaning and polishing positions 101, 102, 103, and 104 are sequentially located at a 90-degree angle, a 60-degree angle, a 30-degree angle, and a 0-degree angle of the swing seat 1. In addition, the feeding zone can be further divided into a separate feeding end and a discharging end, and the swinging seat 1 can also be pivoted between the feeding end and the discharging end.

In step S12, the swinging seat 1 is swung to the correcting position 101 (as shown in FIG. 4), and is transferred from the feeding area 7 by a jig 61 movable upward between the feeding area 7 and the swinging seat 1. A drill bit 9 is inserted into the clamping portion 11 of the swinging seat 1; in this embodiment, an upper arm 60 is disposed between the feeding region 7 and the swinging seat 1 and the bearing arm 60 is slidably disposed. One or more clamps 61, 62, one of which can be dedicated to moving the swinging seat 1 into the drill bit 9, and the other clamp 62 can be dedicated to removing the drill bit 9 from the swinging seat 1, thereby lifting the supply zone 7 and the swinging seat 1 The transfer rate of the drill bit 9.

In step S13, a first image detector 21 (shown in FIG. 4) is disposed at the correction position 101, and the blade portion 91 of the drill bit 9 is sensed by using the first image detector 21 (as shown in FIG. 5). And rotating the drill bit 9 via the clamping portion 11 of the swinging seat 1 to correct a plurality of blade faces 92, 93, 94 of the tip end of the blade portion 91 to a reference position, the blade bread having two first blade faces 92, 94 and the second second surface 93, 95; in practice, the first image detector 21 may include a CCD image unit, and the first image detector 21 is disposed laterally at the blade 9 of the bit 9 with the correction position 101. The position of the contour can sense the side image of the tip end of the blade portion 91, and the side surface of the tip end of the blade portion 91 can present the first blade faces 92, 94, the second blade face 93, and a chip groove of the blade portion 91. 96 and a spiral blade 98; the first image detector 21 can correct the reference position of the blade surface according to the position of the spiral edge 98, the reference position is that the blade faces 92, 93, 94, 95 are ready to be ground. position. In fact, the first image detector 21 and the swinging seat 1 are electrically connected to a computer (not drawn), and the first image detector 21 can input the side image of the sensed blade portion 91 into the computer, and the computer can discriminate The spiral blade 98 in the image controls the angle at which the swinging seat 1 holds the bit 9 according to the position of the helical blade 98, thereby correcting the blade face to the reference position.

In step S14, a defective area 8 of the drill bit 9 is disposed on the machine plane 100 of the vicinity of the swinging seat 1, and the drilled hole box 90 for accommodating the plurality of drill bits 9 is also disposed in the defective area 8; When the image detector 21 senses that the drill bit 9 in the correction position 101 has been damaged, that is, the blade portion 91 has collapsed or broken to complete the drill bit 9 which cannot be repaired by the grinding, the computer discriminates that the blade portion 91 has been damaged without performing the The reference position of the blade surface is corrected. Therefore, the blade portion 91 of the damaged drill bit 9 does not complete the reference position correction, and is transferred to the drill box 90 of the defective portion 8 by the clamp 62, and then the step S23 is executed to end the implementation. Method of the invention.

In step S15, a grinder 4 and a clamper 5 (shown in FIG. 4) are disposed at the grinding position 104, and the clamper 5 is located between the swinging seat 1 and the grinder 4; in this embodiment, the The clamp 5 can be a clamp (as shown in FIG. 7), and the clamp includes two jaws 51, 52 capable of holding and releasing the blade 91; the first blade faces 92, 94 and the second blade face 93, After the correction of the reference position of 95, the clamping portion 11 of the swinging seat 1 is swung to the grinding position 104 (as shown in FIG. 8), and the drill bit 9 is implanted into the two jaws 51 of the clamp 5. Between 52 and 52; at this time, the first blade faces 92, 94 of the drill bit 9 And the second blade faces 93, 95 are located at the close edges of the two grinding wheels 41, 42 of the grinder 4; the first blade faces 92, 94 and the second blade faces 93, 95 of the drill bit 9 receive the grinding wheel 41 of the grinder 4 Before the 42 grinding, the clamp 5 drives the jaws 51, 52 to protect the blade portion 91; then, the grinding wheel 41, 42 of the grinding machine 4 is used to face the first blade surface 92 and the second side of the blade portion 91 side. The blade surface 95 is subjected to first surface polishing (as shown in FIGS. 5 and 6), and the clamper 5 drives the jaws after the first blade surface 92 and the second blade surface 95 are finished by the polishing machine 4 51, 52 release the blade portion 91. In another embodiment, the clamp may also include a V-shaped groove of a conventional one capable of placing the blade portion 91, and a pressing member that can be implanted into the V-shaped groove, so that the blade portion 91 can be held by Between the inner wall of the V-shaped groove and the pressing member, and the pressing member can open the V-shaped groove to release the blade portion 91.

In step S16, after the first blade surface 92 and the second blade surface 95 of the blade portion 91 are subjected to the first surface polishing by the grinder 4 (as shown in FIG. 8), the clamping portion 11 of the swinging seat 1 holds the drill bit. 9 is rotated by a specific angle, which may be 180 degrees in this embodiment; at this time, the drill bit 9 is still located between the two jaws 51, 52 of the clamp 5 (as shown in Figure 7), so that the clamp 5 driving the jaws 51, 52 to protect the blade portion 91; subsequently, using the grinding wheels 41, 42 of the grinder 4 to perform the second surface grinding of the first blade surface 94 and the second blade surface 93 on the other side of the blade portion 91 (As shown in FIGS. 5 and 6), the clamper 5 releases the blade portion 91 after the first blade surface 94 and the second blade surface 93 of the blade portion 91 are polished.

In step S17, after the grinding of the blade portion 91 is completed, the clamping portion 11 of the swinging seat 1 is swung to the cleaning position 103 (as shown in FIG. 9); the cleaning position 103 is provided with a sticking block 31, and A driver 32 that can drive the sticking block 31 to reciprocate in the direction of the blade portion 91, and the sticking block 31 and the driver 32 are located above the grinder 4; in the present embodiment, the sticking block 31 can be clay. And the driver 32 can be a cylinder; the driver 32 drives the adhesive block 31 to adhere and release the first blade faces 92, 94 and the second blade faces 93, 95, thereby removing the first blade face 92, Abrasive debris on 94 and second blade faces 93, 95.

In step S18, a second image detector 22 (shown in FIG. 4) is disposed at the detecting position 102, and the second image detector 22 is located above the swinging seat 1 and the sticking block 31; The clamping portion 11 grips the drill bit 9 to swing to the detecting position 102 (as shown in FIG. 10); then, the second image detector 22 senses the first blade faces 92, 94 and the second facet of the drill bit 9. 93, 95, to confirm the grinding condition of the first blade faces 92, 94 and the second blade faces 93, 95; in practice, the second image detector 22 may also include a CCD image unit, the grinding condition It is discriminated by the second image detector 22 sensing the images of the first blade faces 92, 94 and the second blade faces 93, 95 (as shown in FIG. 6). In fact, the second image detector 22 is electrically connected to the computer, and the sensed first blade surface 92, 94 and the second blade surface 93, 95 are input into the computer, and the computer can discriminate in the image. The first blade faces 92, 94 and the second blade faces 93, 95 are used to confirm whether the first blade faces 92, 94 and the second face faces 93, 95 are ground (as shown in Figure 6).

In step S19, when it is confirmed that the grinding of the first blade faces 92, 94 and the second blade faces 93, 95 is completed, the clamping portion 11 of the swinging seat 1 is swung by the gripping bit 9 to the correction position 101 (as shown in FIG. 4). Illustrated), and the jig 62 is used to transfer the drill bit 9 into the drill box 90 of the supply zone 7, and then step S23 is carried out to end the method of the invention.

In step S15, when the first blade faces 92, 94 and the second blade faces 93, 95 are not confirmed to be ground for the first time, the clamping portion 11 of the swinging seat 1 is clamped. The drill bit 9 is swung to the grinding position 104 (shown in FIG. 8), and the clamper 5 holds the blade portion 91 (as shown in FIG. 7); then, the blade portion 91 is again ground using the grinder 4, the clamper 5, after the blade portion 91 is finished, the blade portion 91 is released, and then the above step S16 is carried out.

In another embodiment, the invention also includes step S20.

In step S20, after the visual analysis of step S18, it is confirmed for the first time that the first blade faces 92, 94 and the second blade faces 93, 95 are not completely polished (as shown in FIGS. 1a and 10), and Before grinding the first blade faces 92, 94 and the second blade faces 93, 95 again using the grinder 4 in step S15, the gripping portion 11 of the swinging seat 1 clamps the drill bit 9 at the detecting position 102 to compensate for the rotation to correct The first blade faces 92, 94 and the second blade faces 93, 95 to a correct angular position capable of accepting grinding; wherein the computer is capable of depending on the first blade face 92, 94 or the second facet in the image The position of 93, 95 controls the angle at which the swinging seat 1 holds the rotation of the drill bit 9, and then the above-described step S15 is carried out. Alternatively, in step S20, the swinging seat 1 corrects the first blade faces 92, 94 and the second blade faces 93, 95 to the correct angular position during the swing from the detecting position 102 to the grinding position 104.

In yet another embodiment, the invention also includes step S21.

In step S21, when it is confirmed that the blade portion 91 of the drill 9 has not been completely polished (as shown in FIG. 1b and FIG. 10), the first blade surface 92 is ground again using the grinder 4 in step S15. Before the 94 and the second blade faces 93, 95, the clamping portion 11 of the swinging seat 1 holds the drill bit 9 and compensates for a certain distance (as shown in Fig. 7) along the axial direction of the drill bit 9 to correct the The first blade faces 92, 94 and the second blade faces 93, 95 to a correct distance position capable of accepting grinding; the specific distance may increase or decrease the tip end of the blade portion 91 from the clamping The length of the inside of the device 5 that protrudes toward the outside increases the diameter of the blade portion 91 for grinding by the grinder 4, and then performs the above-described step S15. Alternatively, the swinging seat 1 can also swing the gripping bit 9 to the grinding position 104 first, and then clamp the drill bit 9 to compensate for the movement of the specific distance.

In addition to this, the present invention also includes step S22.

In step S22, when the second image detector 22 confirms that the first blade faces 92, 94 and the second blade faces 93, 95 of the drill bit 9 are not completely polished (as shown in FIG. 1c and FIG. 10) The computer discriminates that the blade portion 91 has been damaged, so that the grip portion 11 of the swinging seat 1 swings the drill bit 9 to the correction position 101 (as shown in FIG. 4), and transfers the drill bit 9 to the defective portion 8 by the clamp 62. In the drill box 90, step S23 is subsequently carried out to end the method of carrying out the invention.

According to the above, under the condition that the motor power of the swinging seat 1 is driven to be equal to the motor power of the driving base body in the prior art, the speed at which the swinging seat 1 changes position along the arc path in a swinging manner is obviously faster than the above. In the prior art, the position of the seat is changed along the straight path; at the same time, the swing seat 1 can reciprocally change the position along the arc path, thereby overcoming the problem that the turntable in the prior art cannot reversely reload the drill bit; The swinging seat 1 reciprocatingly swinging on the arc path 10 transfers the fine drill bit 9 to improve the processing rate and efficiency of the blade portion 91 of the grinding bit 9; further, the first image detector 21, the second image detector 22, and the dip The adhesive block 31, the driver 32, and the grinder 4 are sequentially disposed on the arc path 10, so that the arrangement area can be effectively reduced, thereby saving construction costs.

The invention is not intended to limit the invention, and other equivalent modifications or substitutions that are not departing from the spirit of the invention are intended to be included in the appended claims. Within the scope.

1‧‧‧Swing

10‧‧‧Arc path

100‧‧‧ machine plane

101‧‧‧corrected position

102‧‧‧Detection location

103‧‧‧Clean location

104‧‧‧ Grinding position

11‧‧‧Clamping Department

12‧‧‧ pivotal department

21‧‧‧First Image Detector

22‧‧‧Second image detector

31‧‧‧Stained block

32‧‧‧ drive

4‧‧‧ Grinder

41, 42‧‧‧ grinding wheel

5‧‧‧Clamp

51, 52‧‧‧ jaws

60‧‧‧ Arm

61, 62‧‧ ‧ fixture

7‧‧‧Feeding area

8‧‧‧Unexpected areas

9‧‧‧ drill bit

90‧‧‧Drilling box

91‧‧‧blade

92, 94‧‧‧ first face

93, 95‧‧‧ second blade

96, 97‧‧‧

98‧‧‧Spiral blade

Figure 1 is a flow chart of a preferred embodiment of the present invention.

Figure 1a is a flow chart of an additional embodiment of Figure 1.

Figure 1b is a flow chart of another additional embodiment of Figure 1.

Figure 1c is a flow chart of yet another embodiment of Figure 1.

Figure 2 is a perspective view of the apparatus for carrying out the method of Figure 1.

Figure 3: Front view of Figure 2.

Figure 4 is a partial enlarged view of Figure 3.

Figure 5 is a partial enlarged view of the drill blade portion of Figure 3.

Figure 6 is a top view of Figure 5.

Figure 7 is a schematic view showing the configuration of the clamp and the drill bit of Figure 2.

Figure 8: A state diagram for use in one of Figure 4.

Figure 9 is another use state diagram of Figure 4.

Figure 10 is a further use state diagram of Figure 4.

1‧‧‧Swing

21‧‧‧First Image Detector

22‧‧‧Second image detector

31‧‧‧Stained block

32‧‧‧ drive

4‧‧‧ Grinder

5‧‧‧Clamp

60‧‧‧ Arm

61, 62‧‧ ‧ fixture

7‧‧‧Feeding area

8‧‧‧Unexpected areas

9‧‧‧ drill bit

90‧‧‧Drilling box

Claims (8)

An automatic aligning grinding method for a drill bit, comprising: taking a swing seat, the swing seat is capable of reciprocatingly swaying along an arc path away from and close to a plane of the machine, and sequentially correcting a correction on the oscillating arc path a position, a detecting position, and a grinding position, wherein the detecting position is between the correcting position and the grinding position; causing the swinging seat to swing to the correcting position, using a feedable zone between the drill bit and the swinging seat a clamp from which a drill bit is inserted into the swing seat; a first image detector is used to sense a blade of the drill bit at the correction position, and the drill bit is rotated by the swing seat, Correcting a plurality of blade faces of the blade portion to a reference position; causing the swinging seat to hold the drill bit to swing to the grinding position, and grinding the blade face at the grinding position using a grinder; continuing to hold the swinging seat The drill bit is swung to the detecting position, and the blade surface is sensed at the detecting position by a second image detector to confirm the grinding condition of the blade face; and when it is confirmed that the blade surface grinding is completed Having the swinging seat clamp the drill bit to the correcting position, and using the clamp to transfer the drill bit to the feeding zone; and confirming that the blade face is not ground, the swinging seat is clamped to the drill bit to compensate for the rotation And moving a certain distance along the axial compensation of the drill bit to correct the blade face to a correct angular position capable of accepting grinding, and continuing to swing the drill bit to swing the drill bit to the grinding position, and use the grinding The blade is ground at the grinding position. Automatic grinding grinding of the drill bit as described in claim 1 a method in which a cleaning position is planned and located between the detecting position and the grinding position, and the drill is driven by the driver after the grinding surface is swung to the cleaning position after the grinding surface is ground. A viscous block adheres and releases the blade surface at the cleaning position. The method for automatically grinding a drill bit according to claim 1, further comprising: before the grinding of the blade surface, the blade is used to hold the blade at the grinding position, and the blade is After the surface is ground by the grinder, the clamp is released from the blade. The method for automatically grinding a drill bit according to claim 1, wherein the step of grinding the blade surface comprises a first surface grinding and a second surface grinding, the grinding machine facing the blade surface After the first surface grinding, the swinging seat holds the drill bit to rotate by a specific angle, and the grinding machine performs the second surface grinding on the blade surface. An automatic aligning grinding method for a drill bit according to claim 1, wherein the oscillating seat corrects the correct angular position of the blade face at the detecting position. The method of claim 1, wherein the swing seat corrects the correct angular position of the blade face during the swing from the detection position to the grinding position. The method of claim 1, wherein the first image detector senses the damaged drill bit and uses the clamp to transfer to a defective area of the drill bit. The method of claim 1, wherein the second image detector swings the drill bit to the correction position when the second image is confirmed to be unfinished. And use The clamp transfers the drill bit to a defective area of a drill bit.