TWI551398B - Drilling wheel grinding machine wheel position automatic adjustment method and its device and drive device - Google Patents

Description

Grinding wheel grinding wheel position automatic adjusting method, device and driving device thereof

The invention relates to the technical field of a drill grinding machine, in particular to a method and a device for automatically adjusting the position of a grinding wheel of a drilling edge grinding machine, and a driving device applied to the automatic adjusting method of the grinding wheel position of the drilling edge grinding machine.

It is known that a micro drill is a drilling tool having a blade diameter of only about 0.1 to 1.0 mm, and has been widely used in drilling of printed circuit boards. Due to the repeated use of the drill bit, the blade surface is prone to wear and loss of drilling accuracy; in order to prolong the service life of the drill face, the current practice is to grind the worn bit surface again with a grinder, so that The bit face returns to a state where the correct aperture accuracy can be drilled. Prior to re-grinding the drill with a grinder, an image vision device (such as a Charge Coupled Device, CCD) is used to correct the reference position of the drill face.

Referring to Fig. 1a, a drill blade face 11 classified as a good product is disclosed. The drill blade face 11 includes a first blade face 11a and a second blade face 11b, since the drill face face 11 is at a reference position. Therefore, an edge line 12 between the first blade surface 11a and the second blade surface 11b can be overlapped with a blade edge reference line 13; as shown in FIG. 1b and FIG. 1c, respectively, a classification is disclosed. As the bit face 11 of the defective product, since the bit face 11 is not at the reference position, the bevel line 12 and the blade edge reference line 13 fail to overlap, and the edge line 12 and the blade edge reference line 13 The offset between the edges is the offset 12 of the bevel line 12 (as shown in Figure 1d).

In the prior art, in order to correct the reference position of the bit face of the drill bit, it is the use of the person. The working method adjusts the position of the grinding wheel of the cutting edge grinding machine so that the grinding wheel of the grinding machine can re-grind the surface of the drill bit properly, but since the diameter of the blade surface of the micro drill bit is only about 0.1 to 1.0 mm, the cutting edge grinding machine is manually adjusted. The position of the grinding wheel is not convenient, and the accuracy is difficult to grasp, and it also hinders the working efficiency of the grinding machine, which needs to be improved.

In order to overcome the problems in the prior art mentioned above, an object of the present invention is to provide a method for automatically adjusting the position of a grinding wheel of a drill edge grinding machine, in particular to an automatic adjustment method of the position of a grinding wheel for the deviation of the edge angle of a drill blade surface. In order to improve the convenience of correcting the face of the drill bit, the grinding efficiency is improved.

In order to achieve the above object, the above method of the present invention comprises: using an image vision device to detect an edge angle offset of a drill blade surface, and using a driver to drive a grinding wheel to axially displace along a grinding wheel of the grinding wheel to A modified position for grinding the bit face of the bit to compensate for the edge line offset. Wherein, the bit face includes a first blade surface and a second blade surface, the edge line is located at a boundary between the first blade surface and the second blade surface, and the edge line offset is the edge angle The offset between the line and a pointed reference line.

Based on the above method, the performance is that the grinding wheel position of the drill grinding machine can be automatically adjusted according to the cutting edge offset of the drill blade surface, so that the grinding wheel of the drilling edge grinding machine can appropriately correct the grinding blade surface again. Grinding improves the convenience of correcting the blade face and improves the grinding efficiency.

In addition, another object of the present invention is to provide a grinding wheel position automatic adjusting device for a drill edge grinding machine for implementing the above adjustment method.

The above automatic adjusting device of the present invention comprises: an image vision device, adjacent Closely disposed on a proximal side of a drill blade surface for detecting the surface of the drill bit; a grinding wheel is slidably disposed on a base plate along a radial direction of a grinding wheel; and a driver driving the grinding wheel Displacement along the axial direction of the grinding wheel; wherein the driver interlocks a cam to drive the grinding wheel to axially displace along the grinding wheel.

In practice, the grinding wheel is fixed on a sliding table, and a sliding rail is arranged on the base, so that the sliding table is slidably disposed on the base through the sliding rail.

A fixed grinding wheel is fixed on one side of the base.

The cam contacts a roller on the slide to roll, thereby driving the slide to slide on the base.

A bottom plate extends from the bottom of the grinding wheel, and the base plate defines a chamber through which the grinding wheel carries a spring spring pressure in the chamber.

Based on the above-described automatic adjusting device, it is convenient to specifically implement the above method of the present invention, so that the operation of automatically adjusting the position of the grinding wheel of the cutting edge grinder according to the amount of the edge line offset of the bit face can be specifically implemented in the cutting edge grinding Above the machine, in order to improve the convenience of the face correction of the drill bit, thereby improving the grinding efficiency.

In addition, the present invention also includes a driving device for automatically adjusting the position of the grinding wheel applied to the edge grinding machine provided by the image vision device.

Based on the above driving device, the performance is that a slight eccentric displacement is generated by the driving device to drive the cam wheel surface to drive the grinding wheel to perform a relatively small linear displacement along the axial direction of the grinding wheel, so as to more accurately compensate the grinding edge of the grinding wheel. The offset of the angle of the blade makes the grinding wheel of the edge grinding machine re-grind the surface of the drill bit, which can improve the accuracy of automatically correcting the position of the grinding wheel. In addition, the cam does not create a gap during the transmission of power, and also helps to automatically correct the accuracy of the position of the grinding wheel.

In order to fully understand the above technical means and the performance of the present invention, and to implement the present invention, please refer to the embodiments and the following description:

Referring to FIG. 2, a flow chart of a preferred embodiment of the present invention is disclosed, and FIG. 1a, FIG. 1d, FIG. 3, FIG. 4 and FIG. 8 illustrate a method for automatically adjusting the position of the grinding wheel of the drill blade grinding machine of the present invention, including The following implementation steps: In step S11, an image vision device 41 is used to detect an offset angle v of a cutting edge surface 11 (as shown in Figs. 8 and 1d). The drill blade surface 11 includes a first blade surface 11a and a second blade surface 11b (as shown in FIG. 1a). The edge line 12 is located at the boundary between the first blade surface 11a and the second blade surface 11b. The offset angle v of the edge line 12 is a deviation between the edge line 12 and a blade edge reference line 13. The amount of shift (as shown in Figure 1d). Furthermore, the image vision device 41 can include a CCD image unit that can image the first blade surface 11a and the second blade surface 11b (shown in FIG. 8) to detect the edge line 12 Offset v.

In step S12, the image vision device 41 is electrically connected to a control unit (for example, a computer, not drawn), and the image vision device 41 can input the detected image of the drill blade surface 11 into the control unit, and the control unit The edge line 12 in the image can be discriminated, and the grinding of the bit face 11 can be controlled according to the position of the edge line 12, thereby correcting the bit face 11 to a reference position, and the edge line 12 is The blade edge reference line 13 is superposed, wherein the reference position is a position at which the bit face 11 is ready to be ground. Further, when the edge line 12 is overlapped with the blade edge reference line 13, the offset angle h of the blade edge 14 may be corrected, and the blade edge 14 is located on the first blade surface 11a and the second blade surface. At the 11b junction, the blade tip offset h is the blade tip 14 and a blade tip reference The offset between points 15 (as shown in Figure 1d).

In step S13, as shown in FIG. 3 and FIG. 4, a driver 31 is used to drive a cam 35, thereby driving a grinding wheel 21a to be displaced along a grinding wheel axial direction 22 of the grinding wheel 21a to a correction position, the grinding wheel 21a of the modified position. The bit face 11 is ground to compensate for the offset v of the bevel line 12. The grinding wheel 21a, 21b has previously adjusted the predetermined grinding angles of the first blade surface 11a and the second blade surface 11b to be obtained, and the grinding wheel 21a has the power of rotation and linear displacement, thereby The first blade surface 11a performs a linear displacement grinding process to complete the grinding of the first blade surface 11a; the grinding wheel 21b is a fixed grinding wheel that does not have the linear displacement power for performing the second blade surface 11b. Grinding to complete the grinding of the second blade surface 11b. The drill blade surface 11 is rotatable by a specific angle, which may be 180 degrees in this embodiment, and the first blade surface 11a and the second blade surface 11b on the side of the drill blade surface 11 are first. After the polishing is completed, the drill blade surface 11 is rotated by 180 degrees to perform the second surface grinding of the first blade surface 11a and the second blade surface 11b on the other side of the drill blade surface 11.

Subsequently, the control unit images the first blade surface 11a and the second blade surface 11b that have been subjected to one grinding to compare with the standard image of the first blade surface 11a and the second blade surface 11b to be obtained. And it is determined whether there is a range of accuracy exceeding the allowable error therebetween, and it is determined that the first blade surface 11a and the second blade surface 11b after the primary polishing are good products within the accuracy range or defective products exceeding the accuracy range. . However, when the first blade surface 11a and the second blade surface 11b are judged to be good, the drill blade surface 11 does not need to be subjected to secondary polishing, and the method of the present invention is terminated. On the other hand, when the first blade surface 11a and the second blade surface 11b are determined to be defective, step S13 is repeatedly performed so that The first blade surface 11a and the second blade surface 11b, which are defective products, are subjected to secondary polishing. After the secondary polishing is completed, the computer images the first blade surface 11a and the second blade surface 11b that have been subjected to the secondary polishing, and detects the first blade surface 11a and the second blade surface 11b twice. It is a good or a bad product.

In addition, when the computer determines that the drill blade surface 11 has been damaged, that is, the drill blade surface 11 has collapsed or broken and the drill bit that cannot be repaired by the grinding is completely repaired, the reference position adjustment of the drill blade surface 11 will not be performed. The method of carrying out the invention is terminated.

According to the above, the present invention uses the driver 31 to drive the grinding wheel 21a to be displaced along the grinding wheel axial direction 22 of the grinding wheel 21a to the correction position, and linearly displaces the first cutting surface 11a to compensate The edge line 12 is offset by a quantity v; thus, the edge grinding machine can automatically re-grind the worn bit surface to extend the service life of the bit face and achieve automation.

In order to facilitate the implementation of the above steps of the present invention, please refer to FIG. 3, FIG. 4, FIG. 5 and FIG. 8. Further, the present invention provides a device for automatically adjusting the position of the grinding wheel of the edge grinding machine, including the image vision device 41 and the grinding wheel. 21a and driver 31.

Wherein: the image vision device 41 is disposed adjacent to the drill blade surface 11 for detecting the drill blade surface 11, and the proximal side of the drill blade surface 11 is relative to the drill blade surface 11 .

The grinding wheel 21a can be slidably mounted on a base 23 along the axial direction 22 of the grinding wheel. Further, the grinding wheel 21a is fixed on a sliding table 24, and is erected on the base 23. a slide rail 25 for passing the slide table 24 The slide rail 25 is slidably disposed on the base 23 . A fixed grinding wheel 21b is fixed to one side of the base 23 . The grinding wheel 21a is configured to have a socket 26, which may be a clamp for positioning the grinding wheel, or a positioning seat that is wrapped or tightened on the outer wall of the grinding wheel, and the bottom of the grinding wheel 21a extends. A support plate 28 is defined in the base plate 23, and the grinding wheel 21a carries the spring pressure of a spring 29 in the chamber 28 through the support plate 27, and the opening of the chamber 28 is provided with a spring. Baffle 30. Therefore, when the sliding table 24 is forced to slide on the base 23 to slide the grinding wheel 21a along the grinding wheel axis 22, the supporting plate 27 at the bottom of the grinding wheel 21a presses the spring 29 to make the sliding table 24 The rebound force of the spring 29 can be restored to the original position.

The grinding wheel 21a is substantially composed of a wheel body and a motor, wherein the wheel body is used for contacting and grinding the drill blade, and the wheel body is coupled to the shaft of the motor to drive the wheel body to rotate and contact the grinding wheel. The drill edge.

The driver 31 is configured to drive the grinding wheel 21a to be displaced along the grinding wheel axis 22; further, the driver 31 is a servo motor, and the driver 31 is coupled to a cam 35 to drive the grinding wheel 21a along the grinding wheel shaft. Displaces toward 22. The cam 35 is disposed adjacent to the driver 31 and is coaxially coupled to the driver 31 via a shaft coupler 32 in a fixed seat 33. There is also a set of ball bearings 34 between the driver 31 and the cam 35. The cam 35 is in continuous contact with a roller 36 slidably disposed on the slide table 24 to drive the slide table 24 to slide on the base 23 by the roller 36. 6 and 7, when the driver 31 interlocks the cam 35 such that the eccentric surface of the cam 35 contacts the roller 36, the distance between the cam 35 and the roller 36 is changed from h1 to H2, which drives the slide table 24 to slide on the base 23, when the eccentric wheel surface of the cam 35 gradually moves away from the roller 36 At this time, the spring 29 pressed by the support plate 27 at the bottom of the grinding wheel 21a will release the rebounding force to return the slide table 24 to the original position, and bring the grinding wheel 21a on the base 23 back to the original position.

Based on the above automatic adjustment method and its device, it is known that the common performance is:

(1) by using the image vision device 41 to detect the offset amount v of the edge line 12 of the drill blade surface 11, and using the driver 31 to drive the grinding wheel 21a to be displaced along the grinding wheel axis 22 of the grinding wheel 21a to Correcting the position, the grinding wheel 21a of the correction position is used for grinding the bit face 11 and compensating for the offset v of the bevel line 12 to automatically adjust the drill according to the offset v of the bevel line 12 of the bit face 11 The position of the grinding wheel 21a of the blade grinder allows the grinding wheel 21a of the cutting edge grinder to appropriately grind the bit face 11 to improve the convenience of correcting the bit face 11 and thereby improve the grinding efficiency.

(2) A slight amount of eccentric displacement is generated by the driver 31 to drive the wheel surface of the cam 35 to drive the grinding wheel 21a to perform a relatively small linear displacement along the grinding wheel axis 22, so that the drilling edge can be more accurately compensated. The offset v of the edge line 12, in turn, improves the accuracy of automatically correcting the position of the wheel.

(3) The advantage that the eccentric wheel surface of the cam 35 does not generate a gap during the transmission of power to the tread of the roller 36 maintains the accuracy of correcting the position of the grinding wheel.

In addition, the present invention also provides a driving device for automatically adjusting the position of the grinding wheel of the cutting edge grinding machine, which is mainly constructed by excluding the image vision device, including the grinding wheel 21a and the driver 31. The grinding wheel 21a is slidably disposed on the base along the grinding wheel axial direction 22 in a negatively loaded spring manner. Further, the grinding wheel 21a is fixed to the sliding table 24, and the sliding rail 25 is erected on the base 23, and the sliding table 24 is slidably disposed on the base through the sliding rail 25. On the stage 23. The fixed grinding wheel 21b is fixed to one side of the base 23 . The driver 31 drives the grinding wheel 21a to be displaced along the grinding wheel axis 22, which is a servo motor. In addition, the details of the implementation are as described above for the automatic adjustment device, and will not be described again.

The above-described driving device of the present invention is also provided with the above-described automatic adjusting device, which utilizes the cam 35 to enhance and maintain the accuracy of automatically correcting the position of the grinding wheel.

The above embodiments are merely illustrative of several embodiments of the invention, but are not to be construed as limiting the scope of the invention. It should be noted that various modifications and improvements may be made without departing from the spirit and scope of the invention. Therefore, the present invention should be based on the content of the claims defined in the scope of the patent application.

11‧‧‧Drill face

11a‧‧‧First face

11b‧‧‧second blade

12‧‧‧Edge

13‧‧‧Edged baseline

14‧‧‧Edge

15‧‧‧Edged reference point

21a, 21b‧‧‧ grinding wheel

22‧‧‧ grinding wheel axial

23‧‧‧Abutment

24‧‧‧ slide table

25‧‧‧Slide rails

26‧‧‧ 承座

27‧‧‧ Support

28‧‧ ‧ room

29‧‧‧ Spring

30‧‧‧Baffle

31‧‧‧ Drive

32‧‧‧Axis

33‧‧‧ fixed seat

34‧‧‧Ball bearings

35‧‧‧ cam

36‧‧‧Roller

41‧‧‧Image Vision

v‧‧‧Edge angle offset

H‧‧‧ tool tip offset

H1, h2‧‧‧ spacing

Figure 1a is a schematic view of a conventional drill face that is classified as good; Figure 1b and Figure 1c are schematic views of a conventional drill face that is classified as a defective product; Figure 1d is a corner offset of a conventional drill face Figure 2 is a flow chart of the automatic adjustment of the position of the grinding wheel of the drill blade of the present invention; Figure 3 is a perspective view of the automatic adjusting device of the embodiment of Figure 2; Figure 4 is a perspective exploded view of Figure 3; Figure 5 is a plan view of Figure 3; Figure 6 is a schematic view of another action of Figure 3; and Figure 8 is a schematic view of the image vision device of the present invention for detecting the face of the drill bit.

21a, 21b‧‧‧ grinding wheel

22‧‧‧ grinding wheel axial

23‧‧‧Abutment

24‧‧‧ slide table

25‧‧‧Slide rails

26‧‧‧ 承座

31‧‧‧ Drive

33‧‧‧ fixed seat

Claims (10)

A method for automatically adjusting a grinding wheel position of a drill edge grinding machine, comprising: using an image visual device to detect an edge deviation of a cutting edge surface, and using a servo motor to coaxially drive a cam to generate an eccentric displacement, the cam The eccentric wheel surface is in contact with a roller that is slidably disposed on the sliding table, and then drives a grinding wheel to axially displace along a grinding wheel of the grinding wheel to a correction position, and the grinding wheel of the modified position is used for grinding the drill bit. The blade surface further compensates for the edge line offset. The method for automatically adjusting the position of the grinding wheel of the edge grinding machine according to the first aspect of the invention, wherein the cutting edge surface comprises a first blade surface and a second blade surface, wherein the edge line is located on the first blade surface and At the junction of the second facet, the edge line offset is an offset between the edge line and a blade edge reference line. An automatic adjusting device for a grinding wheel position of a drill edge grinding machine comprises: an image vision device disposed adjacent to a proximal side of a drill blade surface for detecting the surface of the drill bit; and a grinding wheel along the axial direction of a grinding wheel The negative spring pressing method is slidably disposed on a base; and a servo motor drives the grinding wheel to be axially displaced along the grinding wheel; wherein the driving device coaxially drives a cam to generate an eccentric displacement, and the eccentric wheel surface of the cam is in contact with the sliding The roller disposed on the slide table is rolled, and the roller is driven to axially displace along the grinding wheel through the roller. The automatic adjusting device for the grinding wheel position of the edge grinding machine according to the third aspect of the invention, wherein the grinding wheel is fixed on a sliding table, and a sliding rail is arranged on the base to pass the sliding table through the sliding rail And sliding on the base. Grinding wheel position of the edge grinding machine as described in item 4 of the patent application The automatic adjusting device has a fixed grinding wheel fixed on one side of the base. The automatic adjustment device for the grinding wheel position of the edge grinding machine according to the third aspect of the invention, wherein the bottom of the grinding wheel extends a plate, the base plate defines a chamber, and the grinding wheel transmits the chamber through the supporting plate. Spring spring pressure. A driving device applied to an automatic adjusting method of a grinding wheel position of a cutting edge grinding machine according to claim 1, comprising: a grinding wheel which is slidably mounted on a base plate in a bearing spring manner along a grinding wheel axial direction And a servo motor that drives the grinding wheel to be axially displaced along the grinding wheel; wherein the servo motor coaxially drives a cam to generate an eccentric displacement, and the eccentric wheel surface of the cam is in contact with a roller that slides on the sliding table, Further, the grinding wheel drives the grinding wheel to be axially displaced along the grinding wheel. The driving device of claim 7, wherein the grinding wheel is fixed on a sliding table, and a sliding rail is disposed on the base, and the sliding table is slidably disposed on the base through the sliding rail. on. The driving device of claim 8, wherein a fixed grinding wheel is fixed on one side of the base. The driving device of claim 7, wherein the bottom of the grinding wheel extends a plate, and the base defines a chamber through which the grinding wheel carries a spring spring pressure in the chamber.