A calibration device and calibration method for adjusting micro drill processing equipment

Abstract

The present invention is applicable to the field of adjustment and calibration of micro drill processing equipment, and provides a calibration device for adjusting micro drill processing equipment, including a clamping mechanism that can clamp the micro drill, and a two-dimensional measuring instrument that can be used to perform imaging analysis on the front end of the micro drill; the two-dimensional measuring instrument has an imaging lens that can be directed toward the front end of the micro drill, a display screen for displaying when one of the cutting features in the imaging of the end of the micro drill coincides with the cutting feature baseline, and a control module for flipping the imaging of the end of the micro drill to a set angle to calibrate the relationship between another cutting feature of the micro drill and the cutting feature baseline. The present invention also provides a calibration method for adjusting micro drill processing equipment. The calibration device and calibration method for adjusting micro drill processing equipment provided by the present invention can quickly and effectively detect the cutting blade, thereby adjusting the micro drill processing equipment, and the cost is low.

Description

Technical Field

[0001] The invention belongs to the technical field of adjustment and calibration of drill processing equipment, and in particular relates to a calibration device and a calibration method for adjusting micro drill processing equipment. Background Art

[0002] With the rapid growth in demand for micro drills for printed circuit boards, such as smaller or micro rods, high processing accuracy is required. Micro drills are needed to process printed circuit boards, and their precision requirements are also higher. During the micro drill groove grinding and sharpening process, the cutting blade needs to be inspected. According to the results of the cutting blade inspection, the micro drill processing machine tool is adjusted so that the cutting blade characteristic parameters meet the technical requirements. In the prior art, the cutting blade detection equipment uses CCD images to scan layer by layer and then synthesize them, which can accurately detect the cutting blade of the micro drill. However, the cost of this detection equipment itself is very high, and the detection environment cannot have oil mist, and the requirements are relatively harsh. It is urgent to design a faster, more effective and low-cost detection device and method. Summary of the invention

[0003] The purpose of the present invention is to overcome at least one of the above-mentioned deficiencies of the prior art and to provide a calibration device and a calibration method for adjusting micro drill processing equipment, which can quickly and effectively detect the cutting edge and then adjust the micro drill processing equipment at a low cost.

[0004] The technical solution of the present invention is: a calibration device for adjusting micro drill processing equipment, including a clamping mechanism that can clamp the micro drill, and a two-dimensional measuring instrument that can be used to perform imaging analysis on the front end of the micro drill; the two-dimensional measuring instrument has an imaging lens that can be directed toward the front end of the micro drill, a display screen for displaying when one of the cutting features in the imaging of the micro drill end coincides with the cutting feature baseline, and a control module for flipping the imaging of the micro drill end to a set angle to calibrate the relationship between another cutting feature of the micro drill and the cutting feature baseline.

[0005] As a further improvement of the technical solution, the clamping mechanism has a positioning hole for the shank of the micro drill to extend into; the clamping mechanism also includes a pressing component that can press the micro drill into the positioning hole.

[0006] As a further improvement of the present technical solution, the clamping mechanism includes a fixed block connected to the two-dimensional measuring instrument and a positioning block connected to one side of the fixed block; the positioning hole is arranged on the positioning block; and the pressing assembly is rotatably connected to the fixed block.

[0007] As a further improvement of the present technical solution, the positioning block includes a positioning block body, a first boss and a second boss, the first boss and the second boss are arranged at intervals and are both connected to the positioning block body; the positioning hole includes a first positioning hole arranged on the first boss, and a second positioning hole arranged on the second boss and coaxial with the first positioning hole.

[0008] As a further improvement of the present technical solution, the fixing block has a convex portion opposite to the second boss, and the clamping mechanism also includes a pin that can abut against the handle of the micro drill bit, and the convex portion is provided with a pin hole for one end of the pin to extend into and coaxial with the positioning hole.

[0009] As a further improvement of the present technical solution, the fixed block has a connecting platform, and the pressing assembly includes a pressing rod rotatably connected to the connecting platform, a pressing plate fixed to the pressing rod, and a torsion spring arranged on the pressing rod and used for the pressing plate to press the micro drill bit.

[0010] As a further improvement of the technical solution, one end of the pressure rod is provided with a first pin hole, the connecting platform is provided with a second pin hole, the pressing assembly further includes a pin shaft extending into the first pin hole and the second pin hole, and the pressure rod is rotatably connected to the pin shaft;

[0011] A pressure rod connecting portion for connecting to the pressure plate is provided at the bottom of the other end of the pressure rod; the pressure rod is also provided with a mounting hole for mounting the torsion spring; the mounting hole is located between the second pin hole and the pressure rod connecting portion.

[0012] As a further improvement of the present technical solution, the hole wall of the positioning hole close to the fixed block has a V-shaped positioning portion; the V-shaped positioning portion is arranged on the hole wall of the first positioning hole close to the fixed block; and / or the V-shaped positioning portion is arranged on the hole wall of the second positioning hole close to the fixed block.

[0013] The present invention also provides a calibration method for adjusting micro drill processing equipment, using the above calibration device, comprising the following steps:

[0014] a placing step of placing the micro drill bit on the clamping mechanism and clamping it so that the imaging lens of the two-dimensional measuring instrument faces the front end of the micro drill bit;

[0015] A display adjustment step, adjusting the image focal length of the two-dimensional measuring instrument so that the cutting edge and cutting feature reference line of the micro drill are displayed on the display screen;

[0016] The calibration step is to overlap the cutting feature reference line with one of the cutting features in the micro drill end imaging, rotate the micro drill end imaging by a set angle through the control module, and then calibrate the relationship between the other cutting feature and the cutting feature reference line.

[0017] As a further improvement of the technical solution, a pressing step is further included between the placing step and the display adjusting step, wherein the micro drill bit is placed in the positioning hole and the micro drill bit is pressed into the positioning hole by a pressing assembly.

[0018] The present invention provides a calibration device and a calibration method for adjusting micro drill processing equipment. The device is provided with a clamping mechanism for clamping a micro drill. The front end of the micro drill is imaged and analyzed by a two-dimensional measuring instrument. After one cutting feature in the imaging of the end of the micro drill coincides with a cutting feature baseline, the imaging of the end of the micro drill is flipped at a set angle to calibrate the relationship between another cutting feature of the micro drill and the cutting feature baseline, so as to calibrate the micro drill processing equipment and timely troubleshoot the faults of the micro drill processing equipment. The calibration is simple, fast, low-cost and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional assembly diagram of the clamping mechanism in a calibration device for adjusting micro drill processing equipment provided by an embodiment of the present invention;

[0021] Figure 2 It is a three-dimensional exploded view of the clamping mechanism in a calibration device for adjusting micro drill processing equipment provided by an embodiment of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the positioning block in a calibration device for adjusting micro drill processing equipment provided by an embodiment of the present invention;

[0023] Figure 4 It is a top view of the clamping mechanism in a calibration device for adjusting micro drill processing equipment provided by an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A schematic cross-sectional view of the cross section of AA in the figure;

[0025] Figure 6 yes Figure 4 A schematic cross-sectional view of a section of the middle BB;

[0026] Figure 7It is a schematic diagram of imaging of the end of a micro drill in a display screen in a calibration device for adjusting micro drill processing equipment provided by an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of a display screen of a calibration device for adjusting a micro drill processing device provided by an embodiment of the present invention when a cutting edge coincides with a horizontal line;

[0028] Fig. 9 It is a schematic diagram of the intersection line of the first cutting surface and the second flank surface of the micro drill bit and the horizontal line in the display screen of a calibration device for adjusting a micro drill bit processing equipment provided by an embodiment of the present invention;

[0029] Fig.10 The present invention provides a flowchart of a calibration method for adjusting micro drill processing equipment.

[0030] Numbers in the figure:

[0031] 1-fixed block, 11-convex part; 12-connecting platform;

[0032] 2-positioning block, 21-positioning block body, 22-first boss, 221-first positioning hole, 23-second boss, 231-second positioning hole, 24-V-shaped positioning portion;

[0033] 3-pressure rod, 31-mounting hole;

[0034] 4-pressure plate; 5-pin shaft; 6-thimble; 7-micro drill, 71-cutting edge, 72-intersection line between the first blade face and the second back blade face; 8-bearing, x-horizontal line. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0037] In addition, in the embodiments of the present invention, if there are terms indicating orientation or positional relationships such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., they are based on the orientation or positional relationships or conventional placement states or usage states shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present invention will not be described separately.

[0039] like Figures 1 to 9 As shown, an embodiment of the present invention provides a calibration device for adjusting a micro drill 7 processing equipment, comprising a clamping mechanism and a two-dimensional measuring instrument; the clamping mechanism is used to clamp the micro drill 7, and the two-dimensional measuring instrument is used to perform imaging analysis on the front end of the micro drill 7; the two-dimensional measuring instrument has an imaging lens, a display screen and a control module; the imaging lens can be directed toward the front end of the micro drill 7, and the display screen is used to display an image of the end of the micro drill 7 in which one cutting feature coincides with a cutting feature baseline; the control module is used to flip the image of the end of the micro drill 7 to a set angle to calibrate the relationship between another cutting feature of the micro drill 7 and the cutting feature baseline. The embodiment of the present invention provides a calibration device for adjusting a micro drill 7 processing equipment. The micro drill 7 is clamped by setting a clamping mechanism and placed on a two-dimensional measuring instrument. The cutting feature baseline is adjusted to coincide with a cutting feature and the set angle is flipped. In this embodiment, the micro drill 7 is double-edged and flipped 180 degrees. Of course, in other embodiments, other angles can also be used. If the micro drill 7 is three-edged, it is flipped 120 degrees (the flip angle is 360 / n, where n is the number of blades) to obtain the relationship between the other cutting feature and the cutting feature baseline after flipping; if they coincide, there is no need to adjust the micro drill 7 processing equipment. If they do not coincide, the center height of the working head of the micro drill 7 processing equipment needs to be adjusted. The micro drill 7 processing equipment can be effectively and quickly calibrated by detecting the cutting features of the micro drill 7. The calibration is simple and low in cost.

[0040] Furthermore, the clamping mechanism has a positioning hole, and the handle of the micro drill 7 extends into the positioning hole; the clamping mechanism also includes a material pressing component, and the material pressing component presses the micro drill 7 into the positioning hole, so that the micro drill 7 in the imaging does not move, and the imaging effect is stable, accurate and clear. In other embodiments, the micro drill 7 can also be clamped by other clamps, as long as the micro drill 7 can be clamped to prevent it from shifting.

[0041] Furthermore, the clamping mechanism includes a fixed block 1 connected to the two-dimensional measuring instrument, a positioning block 2 connected to one side of the fixed block 1; the positioning hole is provided on the positioning block 2; and the pressing assembly is rotatably connected to the fixed block 1. The positioning block 2 includes a positioning block body 21, a first boss 22 and a second boss 23, the first boss 22 and the second boss 23 are arranged at intervals, and the first boss 22 and the second boss 23 are both connected to the positioning block body 21; the positioning hole includes a first positioning hole 221 and a second positioning hole 231; the first positioning hole 221 is provided on the first boss 22; the second positioning hole 231 is provided on the second boss 23 and is coaxial with the first positioning hole 221. As an optional embodiment, the first boss 22 and the second boss 23 are arranged in parallel, and the aperture size of the first positioning hole 221 and the second positioning hole 231 is the same. The pressing assembly presses the micro drill bit 7 against the hole wall, and the clamping effect is better. In other embodiments, one positioning hole, or more than three positioning holes can also be set, which can also effectively clamp the micro drill bit 7.

[0042] Furthermore, the fixing block 1 has a convex portion 11, and the convex portion 11 is arranged opposite to the second boss 23. The clamping mechanism also includes a pin 6 that can abut against the handle of the micro drill 7. The convex portion 11 is provided with a pin 6 hole coaxial with the positioning hole, and one end of the pin 6 extends into the pin 6 hole. As an optional embodiment, the pin 6 abuts against the bottom surface of the handle of the micro drill 7, the outer periphery of the micro drill 7 extends into the positioning hole, and the outer side of the micro drill 7 is pressed by the press assembly, so that the micro drill 7 does not move or shift during the detection process, and the positioning is reliable.

[0043] Furthermore, the fixed block 1 has a connecting platform 12, and the pressing assembly includes a pressing rod 3, a pressing plate 4 and a torsion spring; the pressing rod 3 is rotatably connected to the connecting platform 12; the pressing plate 4 is fixed to the pressing rod 3, and the torsion spring is arranged on the pressing rod 3 so that the pressing plate 4 presses the micro drill 7. As an optional embodiment, the pressing plate 4 is rotated, and the torsion force of the torsion spring drives the pressing plate 4 to press the micro drill 7, and the pressing is reliable. In a specific application, the interval between the first boss 22 and the second boss 23 is greater than the height of the pressing plate 4, so that the pressing plate 4 can avoid collision with the positioning block 2 and prevent interference when rotating in the direction close to the positioning block 2 and used to press the micro drill 7.

[0044] Furthermore, one end of the pressure rod 3 is provided with a first pin hole, the connecting platform 12 is provided with a second pin hole, the pressing assembly further includes a pin shaft 5, the pin shaft 5 extends into the first pin hole and the second pin hole, and the pressure rod 3 is rotatably connected to the pin shaft 5; the bottom of the other end of the pressure rod 3 is provided with a pressure rod 3 connecting portion, which is connected to the pressure plate 4 through the pressure rod 3 connecting portion; the pressure rod 3 is also provided with a mounting hole 31 for installing the torsion spring; the mounting hole 31 is located between the second pin hole and the pressure rod 3 connecting portion. As an optional embodiment, the pressure plate 4 is provided with a bearing hole for installing a bearing 8, which is used to support radial loads, so that the rotation is smoother and the durability is good.

[0045] Further, the hole wall of the positioning hole close to the fixing block 1 has a V-shaped positioning portion 24; the V-shaped positioning portion 24 is arranged on the hole wall of the first positioning hole 221 close to the fixing block 1; the V-shaped positioning portion 24 is arranged on the hole wall of the second positioning hole 231 close to the fixing block 1. As an optional embodiment, the pressure plate 4 presses the micro drill 7 so that the micro drill 7 squeezes the V-shaped positioning portion 24, and the positioning is more reliable compared with the arc-shaped hole wall.

[0046] like Figures 8 to 10 As shown, the embodiment of the present invention also provides a calibration method for adjusting the micro drill 7 processing equipment, using the above calibration device, including the following steps:

[0047] A placing step, placing the micro drill 7 on the clamping mechanism and clamping it, so that the imaging lens of the two-dimensional measuring instrument faces the front end of the micro drill 7;

[0048] Display adjustment step, adjusting the image focal length of the two-dimensional measuring instrument so that the cutting edge and cutting feature baseline of the micro drill 7 are displayed on the display screen; in a specific application, adjusting the image focal length of the two-dimensional measuring instrument so that the cutting edge of the micro drill 7 is clearly displayed on the display screen for further calibration.

[0049] The proofreading step is to make the cutting feature reference line coincide with one of the cutting features in the image of the end of the micro drill bit 7, rotate the image of the end of the micro drill bit 7 by a set angle through the control module, and then proofread the relationship between the other cutting feature and the cutting feature reference line. As an optional embodiment, the cutting feature reference line (the horizontal line x in this embodiment) is coincident with the cutting edge 71 in the image of the end of the micro drill bit 7, and rotate the image of the end of the micro drill bit 7 by a set angle through the control module (the micro drill bit 7 in this embodiment is a double-edged micro drill bit 7, and the rotation angle is 180 degrees). If the cutting edge 71 in the image of the end of the rotated micro drill bit 7 coincides with the horizontal line x, the grinding grooves on both sides of the cutting edge 71 are symmetrical, and there is no need to adjust the processing equipment for the micro drill bit 7; if they do not coincide, the processing equipment for the micro drill bit 7 needs to be adjusted, and the multiple grinding groove stations of the processing equipment for the micro drill bit 7 need to be adjusted. The working head height is made consistent or the grinding groove slide fault needs to be checked; in another embodiment, the cutting feature reference line (the horizontal line x in this embodiment) is overlapped with the intersection line 72 of the first blade surface and the second back blade surface in the imaging of the end of the micro drill bit 7, and the imaging of the end of the micro drill bit 7 is rotated 180 degrees by the control module. If the intersection line 72 of the first blade surface and the second back blade surface in the imaging of the rotated end of the micro drill bit 7 coincides with the horizontal line x, the grinding grooves on both sides of the cutting edge 71 are symmetrical, and there is no need to adjust the micro drill bit 7 processing equipment; if they do not coincide, it is necessary to check the chuck indexing fault of the micro drill bit 7 processing equipment.

[0050] Furthermore, a pressing step is further included between the placing step and the display adjustment step, wherein the micro drill bit 7 is placed in the positioning hole, and the micro drill bit 7 is pressed into the positioning hole by the material pressing assembly. In this embodiment, the handle of the micro drill bit 7 is inserted into the positioning hole, and then the pressure plate 4 is rotated to press the micro drill bit 7 against the V-shaped positioning portion 24, so that the positioning is more stable and reliable.

[0051] The embodiment of the present invention provides a calibration device and a calibration method for adjusting a micro drill 7 processing equipment. The device is provided with a clamping mechanism for clamping the micro drill 7. The front end of the micro drill 7 is imaged and analyzed by a two-dimensional measuring instrument. After one of the cutting features in the imaging of the end of the micro drill 7 coincides with the cutting feature baseline, the imaging of the end of the micro drill 7 is flipped at a set angle to calibrate the relationship between another cutting feature of the micro drill 7 and the cutting feature baseline, so as to calibrate the micro drill 7 processing equipment and promptly troubleshoot the faults of the micro drill 7 processing equipment. The calibration is simple, fast, low-cost and highly practical.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A calibration device for adjusting micro drill processing equipment, characterized in that: The invention comprises a clamping mechanism capable of clamping a micro drill and a two-dimensional measuring instrument capable of performing imaging analysis on the front end of the micro drill; the two-dimensional measuring instrument comprises an imaging lens capable of facing the front end of the micro drill, a display screen for displaying when one cutting feature in the imaging of the end of the micro drill coincides with a cutting feature reference line, and a control module for flipping the imaging of the end of the micro drill at a set angle to calibrate the relationship between another cutting feature of the micro drill and the cutting feature reference line.

2. The proofreading device according to claim 1, characterized in that: The clamping mechanism has a positioning hole into which the handle of the micro drill can be inserted; the clamping mechanism also includes a material pressing component which can press the micro drill into the positioning hole.

3. The proofreading device according to claim 2, characterized in that: The clamping mechanism comprises a fixed block connected to the two-dimensional measuring instrument and a positioning block connected to one side of the fixed block; the positioning hole is arranged on the positioning block; and the pressing assembly is rotatably connected to the fixed block.

4. The proofreading device according to claim 3, characterized in that: The positioning block includes a positioning block body, a first boss and a second boss, wherein the first boss and the second boss are arranged at intervals and are both connected to the positioning block body; the positioning hole includes a first positioning hole arranged on the first boss, and a second positioning hole arranged on the second boss and coaxial with the first positioning hole.

5. The proofreading device according to claim 4, characterized in that: The fixing block has a convex portion opposite to the second boss, and the clamping mechanism also includes an ejector pin that can abut against the handle of the micro drill, and the convex portion is provided with an ejector pin hole for one end of the ejector pin to extend into and coaxial with the positioning hole.

6. The proofreading device according to claim 5, characterized in that: The fixed block has a connecting platform, and the material pressing assembly comprises a pressing rod rotatably connected to the connecting platform, a pressing plate fixed to the pressing rod, and a torsion spring arranged on the pressing rod and used for the pressing plate to press the micro drill.

7. The proofreading device according to claim 6, characterized in that: A first pin hole is provided at one end of the pressure rod, a second pin hole is provided at the connecting platform, the material pressing assembly further comprises a pin shaft extending into the first pin hole and the second pin hole, and the pressure rod is rotatably connected to the pin shaft; A pressure rod connecting portion for connecting to the pressure plate is provided at the bottom of the other end of the pressure rod; the pressure rod is also provided with a mounting hole for mounting the torsion spring; the mounting hole is located between the second pin hole and the pressure rod connecting portion.

8. The proofreading device according to any one of claims 4 to 7, characterized in that: The hole wall of the positioning hole close to the fixing block has a V-shaped positioning portion; the V-shaped positioning portion is arranged on the hole wall of the first positioning hole close to the fixing block; and / or the V-shaped positioning portion is arranged on the hole wall of the second positioning hole close to the fixing block.

9. A calibration method for adjusting micro drill processing equipment, characterized in that: The proofreading device according to any one of claims 1 to 8 comprises the following steps: a placing step of placing the micro drill bit on the clamping mechanism and clamping it so that the imaging lens of the two-dimensional measuring instrument faces the front end of the micro drill bit; A display adjustment step, adjusting the image focal length of the two-dimensional measuring instrument so that the cutting edge and cutting feature reference line of the micro drill are displayed on the display screen; The calibration step is to overlap the cutting feature reference line with one of the cutting features in the micro drill end imaging, rotate the micro drill end imaging by a set angle through the control module, and then calibrate the relationship between the other cutting feature and the cutting feature reference line.

10. The proofreading method according to claim 9, characterized in that: A pressing step is also included between the placing step and the display adjusting step, in which the micro drill bit is placed in the positioning hole and the micro drill bit is pressed into the positioning hole by a pressing component.

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