Blade grinding mechanism of micro drill grinding machine

Abstract

The utility model discloses a cutting edge grinding mechanism of a micro drill grinding machine, which comprises a cutting edge grinding fixing seat, a cutting edge grinding advancing module is arranged on the cutting edge grinding fixing seat, a cutting edge grinding transverse moving module is arranged at the output end of the cutting edge grinding advancing module, a grinding wheel mounting seat is arranged at the output end of the cutting edge grinding transverse moving module, and a grinding wheel is arranged on the grinding wheel mounting seat. The grinding wheel mounting seat is provided with two blade grinding main shafts, the two blade grinding main shafts are respectively connected with the grinding wheel mounting seat in an adjustable limiting manner, and the output end of each blade grinding main shaft is respectively provided with a blade grinding wheel. The two cutting edge faces of the micro drill can be ground at the same time, grinding machining of the two cutting edge faces can be completed without rotating the micro drill, the size and the manufacturing cost of equipment are reduced, and the machining efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-drill processing equipment, in particular to a blade grinding mechanism of a micro-drill grinding machine. Background Art

[0002] Drill bits are commonly used hole-making tools, which are made by grinding and cutting rods. PCB micro drills are micro drills used to make holes in PCB circuit boards. As electronic products become thinner and lighter, the specifications of PCB micro drills are also getting smaller and smaller. Among the micro drills that can be produced at present, the minimum diameter can reach 0.01 mm. The formed micro drill is mainly composed of a rod at the bottom and a drill needle at the top.

[0003] In the process of grinding the drill needle, multiple steps are usually required, including at least: opening spiral grooves, sharpening blades, grinding backs and opening step grooves. Among them, sharpening the blade is to grind the blade on the drill needle. With the advancement of technology, more and more micro drills will be designed with two blade surfaces to improve the quality of drilling. The blade sharpening mechanism on the existing micro drill grinder usually has only one grinding wheel, that is, only one blade surface can be ground on the drill needle during one processing; this leads to the need to install two blade sharpening mechanisms on the micro drill grinder, which will not only increase the size and production cost of the equipment, but also the need to transfer the micro drill between the two blade sharpening mechanisms will inevitably affect the processing efficiency. Utility Model Content

[0004] In order to solve some or all of the problems existing in the above-mentioned prior art, the utility model provides a blade sharpening mechanism for a micro drill grinding machine, the micro drill grinding machine comprises a machine platform, the blade sharpening mechanism comprises a blade sharpening fixing seat, the blade sharpening fixing seat is connected to the machine platform, a blade sharpening forward module is provided on the blade sharpening forward module, a blade sharpening transverse movement module is provided on the output end of the blade sharpening transverse movement module, a grinding wheel mounting seat is provided on the output end of the blade sharpening transverse movement module, two blade sharpening spindles are provided on the grinding wheel mounting seat, the two blade sharpening spindles are respectively connected to the grinding wheel mounting seat in an adjustable limit manner, and a blade sharpening grinding wheel is respectively provided on the output end of each blade sharpening spindle.

[0005] As a further improvement of the present invention, two spindle limit seats are provided on the grinding wheel mounting seat, and the blade grinding wheel is respectively connected to a corresponding spindle limit seat, one end of the spindle limit seat is hinged to the grinding wheel mounting seat by a hinge screw, and the spindle limit seat can swing along the hinge screw as the axis, and an arc-shaped adjustment hole is provided on the grinding wheel mounting seat, and two adjustment screws are provided in the arc-shaped adjustment hole, and the adjustment screws are respectively connected to the corresponding spindle limit seats, and the adjustment screws can slide in the arc-shaped adjustment hole.

[0006] As a further improvement of the present invention, angle notches are respectively provided on the side walls of the grinding wheel mounting seat at positions corresponding to the two spindle limit seats, and the side edges of the spindle limit seats are aligned and connected to the angle notches.

[0007] As a further improvement of the utility model, a dust cover is provided on the main shaft limit seat, and the dust cover is sleeved on the periphery of the blade grinding wheel.

[0008] As a further improvement of the present invention, a grinding wheel limiting rod is provided at one end of the spindle limiting seat close to the grinding wheel for sharpening the blade, and a grinding wheel limiting block is provided at the end of the grinding wheel limiting rod. The grinding wheel limiting block can be connected with the corresponding grinding wheel for positioning the grinding wheel for sharpening the blade.

[0009] As a further improvement of the present invention, the blade sharpening advancement module comprises a linear motor, the linear motor is connected to the blade sharpening fixing seat, and the blade sharpening transverse movement module is connected to the output end of the linear motor.

[0010] As a further improvement of the present invention, the blade grinding transverse movement module includes a blade grinding transverse movement fixing seat, the blade grinding transverse movement fixing seat is connected to the output end of the linear motor, a blade grinding transverse movement motor is provided on the blade grinding transverse movement fixing seat, a blade grinding transverse movement screw is provided on the output end of the blade grinding transverse movement motor, a blade grinding transverse movement slider is sleeved on the blade grinding transverse movement screw, and the grinding wheel mounting seat is connected to the blade grinding transverse movement slider.

[0011] As a further improvement of the present invention, a sharpening blade transverse movement guide rail is provided on the sharpening blade transverse movement fixing seat, and the sharpening blade transverse movement slider is slidably engaged with the sharpening blade transverse movement guide rail.

[0012] As a further improvement of the present invention, the knife sharpening blade transverse movement module also includes a tensioning spring, and a spring mounting hole is provided on the knife sharpening blade transverse movement slider at one end away from the knife sharpening blade transverse movement motor, one end of the tensioning spring is connected to the knife sharpening blade transverse movement fixing seat, and the other end extends into the spring mounting hole and is connected to the knife sharpening blade transverse movement slider.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model installs two blade grinding spindles on the grinding wheel mounting seat, and the output end of each blade grinding spindle is respectively provided with a blade grinding wheel, so that the two blade surfaces of the micro drill can be ground at the same time during processing, and the grinding processing of the two blade surfaces can be completed without rotating the micro drill, which not only reduces the size and production cost of the equipment, but also can greatly improve the processing efficiency; and the two blade grinding spindles are respectively connected to the grinding wheel mounting seat in an adjustable manner, and the position of the blade grinding spindle can be timely adjusted according to the needs of processing different micro drills, thereby adjusting the direction of the blade grinding wheel, so that it can be suitable for different types of micro drill processing needs, thereby improving the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic structural diagram of another viewing angle of an embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a blade sharpening transverse movement module in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order.

[0020] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0022] like Figure 1-3 As shown, a blade sharpening mechanism of a micro-drill grinding machine, the micro-drill grinding machine includes a machine platform, the blade sharpening mechanism includes a blade sharpening fixed seat 1, the blade sharpening fixed seat 1 is fixedly connected to the machine platform, a blade sharpening forward module 2 is provided on the blade sharpening forward module 2, a blade sharpening transverse movement module 3 is provided on the output end of the blade sharpening transverse movement module 3, a grinding wheel mounting seat 4 is provided on the output end of the blade sharpening transverse movement module 3, two blade sharpening spindles 5 are provided on the grinding wheel mounting seat 4, the two blade sharpening spindles 5 are respectively connected to the grinding wheel mounting seat 4 in an adjustable limit manner, and a blade sharpening wheel 6 is respectively provided on the output end of each blade sharpening spindle 5. During processing, the micro-drill is mounted on a fixture on the machine platform; the blade sharpening forward module 2 is used to drive the two blade sharpening wheels 6 to move closer to or away from the micro-drill, and the blade sharpening transverse movement module 3 is used to drive the two blade sharpening wheels 6 to move laterally on the machine platform, so that the two blade sharpening wheels 6 perform transverse grinding on the micro-drill.

[0023] During specific operation, the micro drill is mounted on a fixture on the machine platform; then the blade grinding spindle 5 is controlled to work, driving the blade grinding wheel 6 to rotate at high speed; then the blade grinding forward module 2 is controlled to work, driving the blade grinding transverse movement module 3, the grinding wheel mounting seat 4, the blade grinding spindle 5 and the blade grinding wheel 6 to move toward the micro drill until the blade grinding wheel 6 is connected to the micro drill, grinding the blade surface on the micro drill, and then the blade grinding transverse movement module 3 drives the grinding wheel mounting seat 4, the blade grinding spindle 5 and the blade grinding wheel 6 to move transversely, so that the blade grinding wheel 6 grinds the entire blade surface of the micro drill. After the processing is completed, the blade grinding forward module 2 and the blade grinding transverse movement module 3 are respectively controlled to reset, and the blade grinding wheel 6 is driven to reset to the initial position.

[0024] The blade sharpening mechanism is equipped with two blade sharpening wheels 6, so that two blade sharpening surfaces can be sharpened at the same time, which reduces the volume and production cost of the equipment and can also greatly improve the processing efficiency; and the two blade sharpening spindles 5 are respectively connected to the grinding wheel mounting seat 4 in an adjustable manner, so that the position of the blade sharpening spindle 5 can be adjusted in time according to the needs of processing different micro-drills, thereby adjusting the direction of the blade sharpening wheel 6, so that it can be suitable for different types of micro-drill processing needs, thereby improving the versatility of the equipment.

[0025] Specifically, two spindle limit seats 7 are provided on the grinding wheel mounting seat 4, and the blade grinding wheel 6 is respectively connected to a corresponding spindle limit seat 7. One end of the spindle limit seat 7 is hinged to the grinding wheel mounting seat 4 through a hinge screw 8, and the spindle limit seat 7 can swing along the hinge screw 8 as the axis. An arc-shaped adjustment hole 41 is provided on the grinding wheel mounting seat 4, and two adjustment screws 9 are provided in the arc-shaped adjustment hole 41. The adjustment screws 9 are respectively connected to the corresponding spindle limit seats 7, and the adjustment screws 9 can slide in the arc-shaped adjustment hole 41. Before processing, the orientations of the two blade grinding wheels 6 can be adjusted according to actual needs so that they are flush with the blade surface of the micro-drill to be processed; the operator can loosen the hinge screw 8 and the adjusting screw 9 respectively, thereby pushing the spindle limit seat 7 to rotate and swing along the hinge screw 8, and limit the rotation and swinging direction of the spindle limit seat 7 by sliding the adjusting screw 9 in the arc-shaped adjusting hole 41; when adjusted to the appropriate angle, tighten the hinge screw 8 and the adjusting screw 9 respectively, so that the spindle limit seat 7 is connected and fixed to the grinding wheel mounting seat 4.

[0026] In order to achieve accurate and rapid adjustment, angle notches 42 are respectively provided on the side wall of the grinding wheel mounting seat 4 at the positions corresponding to the two spindle limit seats 7, and the side edges of the spindle limit seats 7 are aligned with the angle notches 42. When the spindle limit seat 7 is pushed to rotate and swing along the hinge screw 8, the orientation of the blade grinding wheel 6 can be understood in real time by observing the changes in the side edges of the spindle limit seat 7 and the angle notches 42, so there is no need for repeated trial and error. The orientation of the blade grinding wheel 6 can be adjusted to a suitable position by adjusting it once, which greatly shortens the time for debugging the equipment and improves efficiency.

[0027] A dust cover 10 is installed on the spindle limit seat 7, and the dust cover 10 is connected to the spindle limit seat 7 through a hinge, and the dust cover 10 is sleeved on the periphery of the grinding wheel 6. The dust cover 10 can prevent the random splashing of debris during the grinding process, which can ensure the cleanliness of the processing site on the one hand, and reduce the problem of unstable transmission caused by the flying of processing debris into the motion module on the other hand.

[0028] A grinding wheel limiting rod 11 is provided at one end of the main shaft limiting seat 7 near the blade grinding wheel 6, and a grinding wheel limiting block 12 is provided at the end of the grinding wheel limiting rod 11. The grinding wheel limiting block 12 can be connected with the corresponding blade grinding wheel 6 to position the blade grinding wheel 6. By providing the grinding wheel limiting rod 11 on the main shaft limiting seat 7 and arranging the grinding wheel limiting block 12 on the grinding wheel limiting rod 11, the position of the blade grinding wheel 6 on the blade grinding spindle 5 can be positioned, thereby preventing the blade grinding wheel 6 from falling out of the blade grinding spindle 5 during the machine adjustment or processing, ensuring the safety of the processing and extending the service life of the blade grinding wheel 6.

[0029] The blade grinding forward module 2 includes a linear motor 21, which is connected to the blade grinding fixed seat 1, and the blade grinding transverse module 3 is connected to the output end of the linear motor 21. During operation, the blade grinding transverse module 3, the grinding wheel mounting seat 4, the blade grinding spindle 5 and the blade grinding wheel 6 are driven by the linear motor 21 to move in the direction of approaching or moving away from the micro drill, thereby achieving feed and reset; the use of the linear motor 21 can achieve precise control of the movement, thereby precisely controlling the feed amount, improving the grinding accuracy, and meeting the high-quality processing requirements. In other embodiments, the linear motor 21 can also be replaced with a motor screw structure, etc.

[0030] like Figure 3 As shown, the blade grinding transverse movement module 3 includes a blade grinding transverse movement fixing seat 31, which is connected to the output end of the linear motor 21, and a blade grinding transverse movement motor 32 is provided on the blade grinding transverse movement fixing seat 31, and a blade grinding transverse movement screw rod 33 is provided on the output end of the blade grinding transverse movement motor 32, and a blade grinding transverse movement slider 34 is sleeved on the blade grinding transverse movement screw rod 33, and the grinding wheel mounting seat 4 is connected to the blade grinding transverse movement slider 34. When working, the blade grinding transverse movement motor 32 is controlled to work, and the blade grinding transverse movement screw rod 33 is driven to rotate, thereby driving the blade grinding transverse movement slider 34 to move; the movement of the blade grinding transverse movement slider 34 drives the grinding wheel mounting seat 4, the blade grinding spindle 5 and the blade grinding wheel 6 to move together, thereby achieving the purpose of driving the blade grinding wheel 6 to move horizontally.

[0031] In order to limit and guide the movement direction of the blade grinding transverse movement slider 34, a blade grinding transverse movement guide rail 35 is provided on the blade grinding transverse movement fixing seat 31, and the blade grinding transverse movement slider 34 is slidably engaged with the blade grinding transverse movement guide rail 35. When the blade grinding transverse movement motor 32 drives the blade grinding transverse movement slider 34 to move, the blade grinding transverse movement slider 34 will slide on the blade grinding transverse movement guide rail 35, and the blade grinding transverse movement guide rail 35 is used to limit and guide the movement direction of the blade grinding transverse movement slider 34, thereby improving the stability of the transmission and the accuracy of the control.

[0032] The blade grinding transverse movement module 3 also includes a tension spring 36. A spring mounting hole is provided on the blade grinding transverse movement slider 34 at one end away from the blade grinding transverse movement motor 32. One end of the tension spring 36 is connected to the blade grinding transverse movement fixing seat 31, and the other end extends into the spring mounting hole and is connected to the blade grinding transverse movement slider 34. In specific operation, when the blade grinding transverse movement motor 32 drives the blade grinding transverse movement slider 34 to move transversely, the movement of the blade grinding transverse movement slider 34 will compress or stretch the tension spring 36. By providing the tension spring 36 on the blade grinding transverse movement slider 34, the assembly gap between the blade grinding transverse movement slider 34, the blade grinding transverse movement screw rod 33 and the blade grinding transverse movement guide rail 35 can be eliminated, thereby improving the control accuracy and transmission accuracy.

[0033] Working principle:

[0034] Before processing, the orientation angle of the blade grinding wheel 6 must be adjusted so that it is flush with the blade surface on the micro-drill to be processed; by loosening the hinge screw 8 and the adjusting screw 9, the spindle limit seat 7 can be pushed to rotate and swing along the hinge screw 8, and the rotation and swinging direction of the spindle limit seat 7 can be limited by sliding the adjusting screw 9 in the arc-shaped adjusting hole 41; and by observing the changes in the side of the spindle limit seat 7 and the angle notch 42, the orientation of the blade grinding wheel 6 can be understood in real time. When adjusted to a suitable angle, the hinge screw 8 and the adjusting screw 9 are tightened respectively to connect and fix the spindle limit seat 7 to the grinding wheel mounting seat 4.

[0035] During processing, the micro-drill is installed in the fixture on the machine table, and the micro-drill can be driven to move to a position relative to the blade grinding wheel 6 through other mechanisms of the micro-drill grinding machine, and then the blade grinding spindle 5 is controlled to drive the blade grinding wheel 6 to rotate; then the linear motor 21 is controlled to work, driving the blade grinding wheel 6 to move toward the direction close to the micro-drill, until the two blade grinding wheels 6 are respectively connected to the corresponding blade surfaces on the micro-drill, and then the blade grinding transverse movement motor 32 is controlled to work, driving the blade grinding wheel 6 to move transversely, and the blade surface on the micro-drill is ground by the two blade grinding wheels 6.

[0036] The above-mentioned specific implementation mode is a preferred implementation mode of the present utility model, and is not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation mode. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A blade sharpening mechanism for a micro drill grinder, the micro drill grinder comprising a machine platform, characterized in that: The blade sharpening mechanism comprises a blade sharpening fixing seat, the blade sharpening fixing seat is connected to the machine platform, a blade sharpening advancing module is arranged on the blade sharpening advancing module, a blade sharpening lateral movement module is arranged on the output end of the blade sharpening lateral movement module, a grinding wheel mounting seat is arranged on the output end of the blade sharpening lateral movement module, two blade sharpening spindles are arranged on the grinding wheel mounting seat, the two blade sharpening spindles are respectively connected to the grinding wheel mounting seat in an adjustable limit manner, and a blade sharpening wheel is respectively arranged on the output end of each blade sharpening spindle.

2. The blade sharpening mechanism of the micro drill grinding machine according to claim 1, characterized in that: The grinding wheel mounting seat is provided with two spindle limit seats, and the blade grinding wheel is respectively connected to a corresponding spindle limit seat, one end of the spindle limit seat is hinged to the grinding wheel mounting seat through a hinge screw, and the spindle limit seat can swing along the hinge screw as the axis, and the grinding wheel mounting seat is provided with an arc-shaped adjustment hole, and two adjustment screws are arranged in the arc-shaped adjustment hole, and the adjustment screws are respectively connected to the corresponding spindle limit seats, and the adjustment screws can slide in the arc-shaped adjustment hole.

3. The blade sharpening mechanism of the micro drill grinding machine according to claim 2, characterized in that: Angle notches are respectively arranged at positions corresponding to the two spindle limiting seats on the side walls of the grinding wheel mounting seat, and the side edges of the spindle limiting seats are aligned and connected to the angle notches.

4. The blade sharpening mechanism of the micro drill grinding machine according to claim 2, characterized in that: A dust cover is arranged on the main shaft limiting seat, and the dust cover is sleeved on the periphery of the blade grinding wheel.

5. The blade sharpening mechanism of the micro drill grinding machine according to claim 2, characterized in that: A grinding wheel limiting rod is provided at one end of the spindle limiting seat close to the blade grinding wheel, and a grinding wheel limiting block is provided at the end of the grinding wheel limiting rod. The grinding wheel limiting block can be connected with the corresponding blade grinding wheel for positioning the blade grinding wheel.

6. The blade sharpening mechanism of the micro drill grinder according to any one of claims 1 to 5, characterized in that: The sharpening blade advancing module comprises a linear motor, the linear motor is connected to the sharpening blade fixing seat, and the sharpening blade lateral movement module is connected to the output end of the linear motor.

7. The blade sharpening mechanism of the micro drill grinding machine according to claim 6, characterized in that: The blade grinding transverse movement module includes a blade grinding transverse movement fixing seat, the blade grinding transverse movement fixing seat is connected to the output end of the linear motor, a blade grinding transverse movement motor is provided on the blade grinding transverse movement fixing seat, a blade grinding transverse movement lead screw is provided on the output end of the blade grinding transverse movement motor, a blade grinding transverse movement slider is sleeved on the blade grinding transverse movement lead screw, and the grinding wheel mounting seat is connected to the blade grinding transverse movement slider.

8. The blade sharpening mechanism of the micro drill grinding machine according to claim 7, characterized in that: The grinding blade transverse movement fixing seat is provided with a grinding blade transverse movement guide rail, and the grinding blade transverse movement sliding block is slidably engaged with the grinding blade transverse movement guide rail.

9. The blade sharpening mechanism of the micro drill grinding machine according to claim 7, characterized in that: The blade sharpening transverse movement module also includes a tensioning spring. A spring mounting hole is provided on the blade sharpening transverse movement slider at one end away from the blade sharpening transverse movement motor. One end of the tensioning spring is connected to the blade sharpening transverse movement fixing seat, and the other end extends into the spring mounting hole and is connected to the blade sharpening transverse movement slider.

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