Segment difference back grinding integrated machining mechanism for micro drill machining

Abstract

The utility model discloses a segment difference back grinding integrated machining mechanism for micro drill machining, which comprises a back grinding transverse moving module, a back grinding rotating module is arranged at the output end of the back grinding transverse moving module, a back grinding lifting module is arranged at the output end of the back grinding rotating module, a back grinding main shaft is arranged at the output end of the back grinding lifting module, and a back grinding main shaft is arranged at the output end of the back grinding main shaft. A segment difference grinding wheel and a back grinding grinding wheel are arranged at the output end of the back grinding main shaft, and the back grinding rotating module is used for driving the back grinding lifting module and the back grinding main shaft to rotate and swing so as to drive the segment difference grinding wheel and the back grinding grinding wheel to be aligned to a micro drill to be machined. According to the utility model, not only can back grinding processing be carried out on the micro drill, but also a segment difference groove can be ground on the micro drill; back grinding and section difference groove opening are integrated in one device, circulation of a micro drill between devices can be reduced, and therefore the machining efficiency is improved, the risk that products are damaged by clamping can be reduced, and the machining yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-drill processing equipment, in particular to a step-difference back grinding integrated processing mechanism for micro-drill processing. 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 bit, multiple steps are usually required, including at least: opening spiral grooves, grinding blades, grinding backs and opening step grooves. Among them, back grinding is to grind the back of the drill bit, and opening step grooves is to grind a step difference on the outer wall of the drill bit; in the prior art, back grinding is usually processed using a micro-drill grinding machine, and opening step grooves is usually processed using a UC slotting machine. This results in the need for the micro-drill to flow between two devices, which will inevitably affect the processing efficiency; moreover, since the micro-drill is relatively small, multiple clamping will also increase the risk of being clamped and damaged, which can easily lead to poor processing and is not conducive to high-quality processing requirements. 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 step-difference back grinding integrated processing mechanism for micro-drill processing, including a back grinding lateral shift module, a back grinding rotation module is provided on the output end of the back grinding lateral shift module, a back grinding lifting module is provided on the output end of the back grinding rotation module, a back grinding spindle is provided on the output end of the back grinding lifting module, a step-difference grinding wheel and a back grinding wheel are provided on the output end of the back grinding spindle, and the back grinding rotation module is used to drive the back grinding lifting module and the back grinding spindle to rotate and swing, thereby driving the step-difference grinding wheel and the back grinding wheel to align with the micro-drill to be processed respectively.

[0005] As a further improvement of the present invention, the back grinding rotation module includes a rotating fixed plate and a back grinding rotation seat, the rotating fixed plate is connected to the output end of the back grinding lateral movement module, and the back grinding lifting module is connected to the back grinding rotation seat; one end of the back grinding rotation seat is hinged to the rotating fixed plate, and a rotating motor and a driven wheel are provided on the rotating fixed plate, and a driving wheel is provided on the output end of the rotating motor, and a transmission belt is sleeved on the driving wheel. One of the side surfaces of the back grinding rotation seat is an arc surface, and the transmission belt abuts against the arc surface, and the two ends of the transmission belt are respectively connected to the back grinding rotation seat, and the driven wheel abuts against a side of the transmission belt away from the driving wheel.

[0006] As a further improvement of the present invention, there are two driven wheels, and the two driven wheels are symmetrically distributed on both sides of the driving wheel.

[0007] As a further improvement of the utility model, a swing scale is provided on the rotating fixed plate, and the side edge of the grinding back rotating seat can be aligned and connected with the swing scale.

[0008] As a further improvement of the present invention, the lower end surface of the back grinding rotating seat is connected to the upper end surface of the rotating fixed plate, the back grinding rotating seat is provided with a first air inlet joint, the back grinding rotating seat is provided with a first air duct hole, the first air duct hole is respectively connected with the first air inlet joint and the lower end surface of the back grinding rotating seat, the first air inlet joint is used for an external air source, and then an air film is formed between the lower end surface of the back grinding rotating seat and the upper end surface of the rotating fixed plate.

[0009] As a further improvement of the utility model, an electromagnet is provided on the lower end surface of the grinding back rotating seat, the rotating fixed plate is made of magnetic metal, and the electromagnet is detachably connected to the rotating fixed plate by magnetic attraction.

[0010] As a further improvement of the present invention, the grinding back transverse shift module includes a grinding back transverse shift fixed seat, a grinding back transverse shift fixed seat is provided with a grinding back transverse shift motor, an output end of the grinding back transverse shift motor is provided with a grinding back transverse shift screw, a grinding back transverse shift slider is sleeved on the grinding back transverse shift screw, and the grinding back transverse shift slider is connected to the rotating fixed plate; a guide bar is provided on the grinding back transverse shift slider, and a guide seat is provided at a position corresponding to the guide bar on the grinding back transverse shift fixed seat, and the guide bar is slidably engaged with the guide seat.

[0011] As a further improvement of the utility model, a plurality of porous ceramic blocks and second air duct holes are provided in the guide seat, a second air pipe joint is provided on the guide seat, the second air duct hole is respectively connected with the second air inlet joint and the porous ceramic block, the porous ceramic block extends out of the end face of the guide seat close to the guide strip, the second air pipe joint is used for connecting to an external air source, and then forming an air film on the mating surface of the guide strip and the guide seat.

[0012] As a further improvement of the present invention, the back grinding lifting module includes a back grinding lifting fixed seat, the back grinding lifting fixed seat is connected to the back grinding rotating seat, and the back grinding lifting fixed seat is provided with a back grinding lifting motor. The output end of the back grinding lifting motor is provided with a back grinding lifting screw rod, the back grinding lifting screw rod is sleeved with a back grinding lifting slider, the back grinding lifting slider is slidably limitedly connected to the back grinding lifting fixed seat, and the back grinding spindle is connected to the back grinding lifting slider.

[0013] As a further improvement of the present invention, a back grinding calibration mirror is provided on the back grinding rotating seat, and the observation center of the back grinding calibration mirror is flush with the rotation center of the back grinding rotating seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can drive the back grinding wheel and the step difference grinding wheel to align with the products to be processed respectively by setting the back grinding rotation module, and then through the cooperation of the back grinding transverse movement module and the back grinding lifting module, it can not only realize the back grinding of the micro drill, but also grind the step difference groove on the micro drill; integrating the back grinding and the step difference groove into one device can reduce the circulation of the micro drill between equipment, thereby improving the processing efficiency, and can also reduce the risk of the product being clamped and damaged, thereby improving the processing yield rate. During specific work, first control the back grinding rotation module to work, drive the back grinding lifting module and the back grinding spindle to rotate and swing, so that the step difference grinding wheel is aligned with the product to be processed, and then control the back grinding transverse movement module, the back grinding lifting module and the back grinding spindle to work respectively, so that the step difference grinding wheel is connected with the micro drill to be processed, and the step difference groove is processed on the micro drill; after the step difference processing is completed, control the back grinding transverse movement module and the back grinding lifting module to reset, and drive the step difference grinding wheel to leave the product; then control the back grinding rotation module to work, drive the back grinding lifting module and the back grinding spindle to rotate and swing, so that the back grinding wheel is aligned with the micro drill to be processed, and then control the back grinding transverse movement module, the back grinding lifting module and the back grinding spindle to work respectively, so that the back grinding wheel is connected with the micro drill to be processed, and the back of the knife on the micro drill is ground, thereby completing the step difference and back grinding processing of the micro drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the back grinding rotation module in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the back grinding and lateral shifting module in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of the guide seat for the guide strip fish in the embodiment of the utility model;

[0021] Figure 5This is a schematic diagram of the internal structure of the guide seat in the embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the back grinding lifting module in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] like Figure 1-6 As shown, a step-difference back grinding integrated processing mechanism for micro-drill processing includes a back grinding transverse shift module 1, a back grinding rotation module 2 is provided on the output end of the back grinding transverse shift module 1, a back grinding lifting module 3 is provided on the output end of the back grinding rotation module 2, a back grinding spindle 4 is provided on the output end of the back grinding lifting module 3, a step-difference grinding wheel 5 and a back grinding wheel 6 are provided on the output end of the back grinding spindle 4, and the back grinding rotation module 2 is used to drive the back grinding lifting module 3 and the back grinding spindle 4 to rotate and swing, thereby driving the step-difference grinding wheel 5 and the back grinding wheel 6 to align with the micro-drill to be processed respectively. The step-difference back grinding integrated processing mechanism for micro-drill processing is used to grind the back of the micro-drill, and is also used to grind a step-difference groove on the outer wall of the micro-drill.

[0027] During specific operation, the step-difference back grinding integrated processing mechanism for micro-drilling is installed on the grinding equipment, and the micro-drill is installed on the fixture on the grinding equipment. By controlling the back grinding rotation module 2 to work, the back grinding lifting module 3 and the back grinding spindle 4 are driven to rotate and swing, so that the step-difference grinding wheel 5 is aligned with the micro-drill, and then the back grinding transverse movement module 1, the back grinding lifting module 3 and the back grinding spindle 4 are controlled to work respectively, so that the step-difference grinding wheel 5 is connected with the micro-drill to be processed, and a step-difference groove is processed on the micro-drill; the step-difference adding After the work is completed, the back grinding transverse movement module 1 and the back grinding lifting module 3 are controlled to reset, and the step difference grinding wheel 5 is driven to leave the micro-drill; then the back grinding rotation module 2 is controlled to work, and the back grinding lifting module 3 and the back grinding spindle 4 are driven to rotate and swing, so that the back grinding wheel 6 is aligned with the micro-drill, and then the back grinding transverse movement module 1, the back grinding lifting module 3 and the back grinding spindle 4 are controlled to work respectively, so that the back grinding wheel 6 is connected with the micro-drill to be processed, and the back of the knife on the micro-drill is ground, thereby completing the step difference and back grinding processing of the micro-drill.

[0028] The integrated step-difference back grinding mechanism for micro-drill processing can drive the back grinding wheel 6 and the step-difference grinding wheel 5 to align with the product to be processed respectively by setting the back grinding rotation module 2, and then through the cooperation of the back grinding transverse movement module 1 and the back grinding lifting module 3, it can not only realize the back grinding of the micro-drill, but also grind the step-difference groove on the micro-drill; integrating the back grinding and the step-difference groove into one device can reduce the circulation of the micro-drill between equipment, thereby improving the processing efficiency, and can also reduce the risk of the product being clamped and improve the processing yield rate.

[0029] like Figure 2As shown, the back grinding rotation module 2 includes a rotating fixed plate 21 and a back grinding rotation seat 22, the rotating fixed plate 21 is connected to the output end of the back grinding transverse movement module 1, and the back grinding lifting module 3 is connected to the back grinding rotation seat 22. One end of the back grinding rotation seat 22 is hinged to the rotating fixed plate 21, and a rotating motor 23 and a driven wheel 24 are provided on the rotating fixed plate 21. A driving wheel 25 is provided on the output end of the rotating motor 23, and a transmission belt 26 is sleeved on the driving wheel 25. One side of the back grinding rotation seat 22 is a circular arc surface 221, and the transmission belt 26 abuts against the circular arc surface 221, and both ends of the transmission belt 26 are respectively connected to the back grinding rotation seat 22, and the driven wheel 24 abuts against a side of the transmission belt 26 away from the driving wheel 25. The rotating motor 23 can drive the driving wheel 25 to slide on the transmission belt 26, thereby pulling the back grinding rotation seat 22 to rotate and swing along the hinged end. During specific operation, the driving wheel 25 can be driven to rotate by controlling the rotating motor 23; because the two ends of the transmission belt 26 are fixed respectively, and the two sides of the transmission belt 26 are respectively in contact with the driving wheel 25 and the driven wheel 24, so during the rotation of the driving wheel 25, the transmission belt 26 will be pulled to move, thereby driving the back grinding rotating seat 22 to rotate and swing on the rotating fixed plate 21 with the hinged end as the axis, and the back grinding rotating seat 22 drives the back grinding lifting module 3 and the back grinding spindle 4 to move synchronously, so that the step difference grinding wheel 5 or the back grinding wheel 6 can be aligned with the micro drill, so as to achieve the purpose of switching between back grinding processing or step difference processing of the micro drill.

[0030] In this embodiment, there are two driven wheels 24, and the two driven wheels 24 are symmetrically distributed on both sides of the driving wheel 25, and are respectively rotatably limited and connected to the rotating fixed plate 21; the two driven wheels 24 respectively press against the side of the transmission belt 26 away from the driving wheel 25, so that the transmission belt 26 can always keep in contact with the arc surface 221 on the grinding back rotating seat 22 during the transmission process, which can improve the stability of the transmission and achieve the purpose of accurately controlling the rotation and swing angle.

[0031] In order to facilitate the debugging of the equipment, a swing scale 211 is provided on the rotating fixed plate 21, and the side of the grinding back rotating seat 22 can be aligned with the swing scale 211. When debugging the equipment, after controlling the rotating motor 23 to work, by observing the numerical changes of the alignment between the side of the grinding back rotating seat 22 and the swing scale 211, the swing angle of the grinding back rotating seat 22 and the grinding back spindle 4 can be known, so as to judge whether the step difference grinding wheel 5 or the grinding back grinding wheel 6 can be aligned with the micro drill; without repeated testing, the machine can be adjusted in one step, which greatly saves the time of debugging the equipment and improves efficiency.

[0032] In this embodiment, the lower end surface of the back grinding rotating seat 22 is connected to the upper end surface of the rotating fixed plate 21, and a first air inlet connector 27 is provided on the back grinding rotating seat 22. A first air duct hole 222 is provided in the back grinding rotating seat 22. The first air duct hole 222 is respectively connected to the first air inlet connector 27 and the lower end surface of the back grinding rotating seat 22. The first air inlet connector 27 is used for an external air source, thereby forming an air film between the lower end surface of the back grinding rotating seat 22 and the upper end surface of the rotating fixed plate 21. When it is necessary to switch back grinding or step difference processing, the external air source will input high-pressure gas into the first air inlet connector 27, and then the gas will flow into the first air duct hole 222, and blow to the upper end surface of the rotating fixed plate 21 through the first air duct hole 222, thereby forming a layer of air film between the lower end surface of the back grinding rotating seat 22 and the upper end surface of the rotating fixed plate 21. The formed air film makes it unnecessary for the back grinding rotating seat 22 and the rotating fixed plate 21 to directly contact, thereby reducing the wear of the back grinding rotating seat 22 during the rotation and swinging process, thereby extending the service life; on the other hand, the formation of an air film between the lower end surface of the back grinding rotating seat 22 and the upper end surface of the rotating fixed plate 21 can also reduce the friction resistance between the back grinding rotating seat 22 and the rotating fixed plate 21, thereby improving the control accuracy, which is conducive to high-quality processing requirements.

[0033] In order to improve the connection stability between the back grinding rotating seat 22 and the rotating fixed plate 21 during back grinding or step processing, an electromagnet 28 is provided on the lower end surface of the back grinding rotating seat 22, and the rotating fixed plate 21 is made of magnetic metal, such as iron, and the electromagnet 28 is detachably connected to the rotating fixed plate 21 by magnetic attraction. When it is necessary to switch back grinding or step processing, the rotating motor 23 is controlled to work, and the electromagnet 28 is controlled to be powered off at the same time, so that the high-pressure gas connected to the first airway hole 222 can form an air film between the lower end surface of the back grinding rotating seat 22 and the upper end surface of the rotating fixed plate 21, so that the back grinding rotating seat 22 and the rotating fixed plate 21 will not be in direct contact. When back grinding or step processing is performed, the electromagnet 28 is controlled to be energized to generate magnetic force, and the electromagnet 28 will be magnetically connected and fixed to the rotating fixed plate 21, so that the back grinding rotating seat 22 is connected and fixed to the rotating fixed plate 21, so that the back grinding transverse movement module 1 or the back grinding lifting module 3 can stably drive the back grinding wheel 6 and the step grinding wheel 5 to move, thereby improving the processing accuracy.

[0034] A back grinding calibration mirror 7 is provided on the back grinding rotating seat 22, and the observation center of the back grinding calibration mirror 7 is set flush with the rotation and swinging center of the back grinding rotating seat 22. When the back grinding rotating seat 22 rotates and swings, the back grinding calibration mirror 7 will also swing synchronously, so that the center positions of the two are fixed; the back grinding calibration mirror 7 is used to calibrate the grinding surface center of the back grinding wheel 6 and the rotation center of the back grinding rotating seat 22 on the same straight line perpendicular to the horizontal plane, so as to ensure that after the back grinding rotating seat 22 rotates and swings, the position relationship between the grinding surface of the back grinding wheel 6 and the rotation center of the back grinding rotating seat 22 will not change, thereby improving the processing accuracy. When adjusting the machine, the position of the back grinding wheel 6 is observed through the back grinding calibration mirror 7, and the position angle of the back grinding wheel 6 on the back grinding spindle 4 is adjusted until the grinding surface center of the back grinding wheel 6 coincides with the center of the back grinding calibration mirror 7; at this time, the grinding surface center of the back grinding wheel 6 is flush with the rotation center of the back grinding rotating seat 22. It can be seen that by observing the back grinding calibration mirror 7, the grinding surface center of the back grinding wheel 6 can be quickly calibrated to be flush with the rotation center of the back grinding rotating seat 22, so that both are simultaneously in a straight line perpendicular to the horizontal plane, thereby shortening the time for debugging the equipment and improving processing efficiency.

[0035] like Figure 3 As shown, the grinding back transverse movement module 1 includes a grinding back transverse movement fixed seat 11, a grinding back transverse movement motor 12 is provided on the grinding back transverse movement fixed seat 11, a grinding back transverse movement screw rod 13 is provided on the output end of the grinding back transverse movement motor 12, a grinding back transverse movement slider 14 is sleeved on the grinding back transverse movement screw rod 13, and a rotating fixed plate 21 is fixedly connected to the grinding back transverse movement slider 14. During specific operation, the grinding back transverse movement motor 12 is controlled to work to drive the grinding back transverse movement screw rod 13 to rotate, and then drive the grinding back transverse movement slider 14 to slide on the grinding back transverse movement fixed seat 11, drive the rotating fixed plate 21, the grinding back rotating seat 22 and the grinding back lifting module 3 to move, thereby driving the grinding back spindle 4, the grinding back grinding wheel 6 and the step difference grinding wheel 5 to move in the direction close to or away from the micro drill.

[0036] In order to limit and guide the moving direction of the grinding back transverse sliding block 14, a guide bar 15 is provided on the grinding back transverse sliding block 14, and a guide seat 16 is provided at a position corresponding to the guide bar 15 on the grinding back transverse moving fixed seat 11, and the guide bar 15 is slidably engaged with the guide seat 16. When the grinding back transverse moving motor 12 is working, the grinding back transverse sliding block 14 will drive the guide bar 15 to slide on the guide seat 16, and the moving direction of the grinding back transverse sliding block 14 is limited and guided by the cooperation and limitation of the guide bar 15 and the guide seat 16, thereby improving the stability of the transmission.

[0037] like Figure 4 , 5As shown, in this embodiment, the guide strips 15 are symmetrically distributed on the left and right side walls of the grinding back transverse sliding block 14, and the number of guide seats 16 is the same as the number of guide strips 15, and the positions are arranged one by one. A V-shaped inclined surface 161 is provided on the side of the guide seat 16 close to the guide strip 15, and a V-shaped groove 151 adapted to the V-shaped inclined surface 161 is provided on the side of the guide strip 15 close to the guide seat 16. Through the cooperation of the V-shaped inclined surface 161 and the V-shaped groove 151, the guide strip 15 and the guide seat 16 can be fixed by clamping, thereby improving the stability of the structure. In other embodiments, the matching surface of the guide seat 16 and the guide strip 15 can also be any other shape that can achieve clamping and limiting, such as: C-shaped, T-shaped, dovetail groove shape or I-shaped, etc.

[0038] A plurality of porous ceramic blocks 17 and second air duct holes 162 are provided in the guide seat 16. The porous ceramic blocks 17 are symmetrically distributed on the two side walls of the V-shaped slope 161. A second air pipe joint 18 is provided on the guide seat 16. The second air duct holes 162 are respectively connected to the second air inlet joint and the porous ceramic blocks 17. The porous ceramic blocks 17 extend out of the end face of the guide seat 16 close to the guide strip 15. The second air pipe joint 18 is used for connecting to an external air source, thereby forming an air film on the mating surface of the guide strip 15 and the guide seat 16. During operation, the second air pipe joint 18 is connected to an external high-pressure air source, and the high-pressure gas flows into the second air duct hole 162 through the second air pipe joint 18, and then flows into the porous ceramic block 17 through the second air duct hole 162, and finally blows toward the guide strip 15 through the porous ceramic block 17, thereby forming a layer of air film between the matching surfaces of the guide seat 16 and the guide strip 15, so that the guide seat 16 and the guide strip 15 will not be in direct contact, reducing the wear of the guide strip 15 during the sliding process and extending the service life; it can effectively avoid the problem of inaccurate guiding due to wear, so that it can meet the high-precision and high-standard processing requirements.

[0039] like Figure 6 As shown, the grinding back lifting module 3 includes a grinding back lifting fixed seat 31, which is connected to the grinding back rotating seat 22, and a grinding back lifting motor 32 is provided on the grinding back lifting fixed seat 31. A grinding back lifting screw 33 is provided on the output end of the grinding back lifting motor 32, and a grinding back lifting slider 34 is sleeved on the grinding back lifting screw 33. The grinding back lifting slider 34 is connected to the grinding back lifting fixed seat 31 with a sliding limit, and the grinding back spindle 4 is connected to the grinding back lifting slider 34. When working, the grinding back lifting screw 33 can be driven to rotate by controlling the grinding back lifting motor 32 to drive the grinding back lifting screw 33 to rotate, and then drive the grinding back lifting slider 34 to lift and slide on the grinding back lifting fixed seat 31, driving the grinding back spindle 4, the grinding back grinding wheel 6 and the step difference grinding wheel 5 to move synchronously, so as to achieve the purpose of driving the grinding back grinding wheel 6 or the step difference grinding wheel 5 to move up and down.

[0040] In this embodiment, the back grinding lifting module 3 has the same structure as the back grinding transverse movement module 1, and a guide mechanism is also provided between the back grinding lifting fixed seat 31 and the back grinding lifting slider 34 to limit and guide the movement direction of the back grinding lifting slider 34.

[0041] Working principle:

[0042] When processing the micro-drill, after the micro-drill is driven by other devices of the grinding equipment to the processing position of the step-difference back grinding integrated processing mechanism for the micro-drill processing, the rotary motor 23 is first controlled to drive the back grinding rotating seat 22 to drive the back grinding lifting module 3 and the back grinding spindle 4 to rotate and swing until the step-difference grinding wheel 5 is aligned with the micro-drill; then the back grinding spindle 4 is controlled to work to drive the step-difference grinding wheel 5 to rotate; then the back grinding transverse movement motor 12 and the back grinding lifting motor 32 are controlled to work to drive the step-difference grinding wheel 5 to move in the horizontal and lifting dimensions, so that the step-difference grinding wheel 5 is connected to the micro-drill, and the step-difference groove is ground on the outer surface of the micro-drill; after the step-difference groove is ground, the back grinding lifting motor 32 and the back grinding transverse movement motor 12 are controlled to drive the step-difference grinding wheel 5 to reset to the initial position.

[0043] Then control the rotating motor 23 to work, drive the back grinding rotating seat 22 to drive the back grinding lifting module 3 and the back grinding spindle 4 to rotate and swing, until the back grinding wheel 6 is aligned with the micro drill; then control the back grinding spindle 4 to work, drive the step difference grinding wheel 5 to rotate; then control the back grinding transverse movement motor 12 and the back grinding lifting motor 32 to work, drive the step difference grinding wheel 5 to move in the lateral and lifting dimensions, so that the back grinding wheel 6 is connected to the micro drill, and the back of the micro drill is ground; after the back grinding is completed, control the back grinding lifting motor 32 and the back grinding transverse movement motor 12 to drive the step difference grinding wheel 5 to reset to the initial position, and complete the back and step grinding of the micro drill.

[0044] 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 step-back grinding integrated processing mechanism for micro-drilling, characterized in that: It includes a back grinding transverse shift module, a back grinding rotation module is provided on the output end of the back grinding transverse shift module, a back grinding lifting module is provided on the output end of the back grinding rotation module, a back grinding main shaft is provided on the output end of the back grinding main shaft, a step grinding wheel and a back grinding wheel are provided on the output end of the back grinding main shaft, and the back grinding rotation module is used to drive the back grinding lifting module and the back grinding main shaft to rotate and swing, thereby driving the step grinding wheel and the back grinding wheel to align with the micro drill to be processed respectively.

2. The step-back grinding integrated processing mechanism for micro-drilling according to claim 1, characterized in that: The back grinding rotation module comprises a rotation fixing plate and a back grinding rotation seat, the rotation fixing plate is connected to the output end of the back grinding transverse movement module, and the back grinding lifting module is connected to the back grinding rotation seat; One end of the back grinding rotating seat is hinged to the rotating fixed plate, a rotating motor and a driven wheel are provided on the rotating fixed plate, a driving wheel is provided on the output end of the rotating motor, a transmission belt is sleeved on the driving wheel, one of the side surfaces of the back grinding rotating seat is an arc surface, the transmission belt abuts against the arc surface, and both ends of the transmission belt are respectively connected to the back grinding rotating seat, and the driven wheel abuts against a side of the transmission belt away from the driving wheel.

3. The step-back grinding integrated processing mechanism for micro-drilling according to claim 2, characterized in that: There are two driven wheels, and the two driven wheels are symmetrically distributed on both sides of the driving wheel.

4. The step-back grinding integrated processing mechanism for micro-drilling according to claim 2, characterized in that: The rotating fixed plate is provided with a swing scale, and the side edge of the grinding back rotating seat can be aligned with the swing scale.

5. The step-back grinding integrated processing mechanism for micro-drilling according to claim 2, characterized in that: The lower end surface of the back grinding rotating seat is connected to the upper end surface of the rotating fixed plate, and the back grinding rotating seat is provided with a first air inlet connector. The back grinding rotating seat is provided with a first air duct hole, and the first air duct hole is respectively connected with the first air inlet connector and the lower end surface of the back grinding rotating seat, and the first air inlet connector is used for an external air source.

6. The step-back grinding integrated processing mechanism for micro-drilling according to claim 5, characterized in that: An electromagnet is arranged on the lower end surface of the back grinding rotating seat, and the rotating fixed plate is made of magnetic metal. The electromagnet is detachably connected to the rotating fixed plate by magnetic attraction.

7. The integrated step-back grinding mechanism for micro-drilling according to any one of claims 2 to 6, characterized in that: The grinding back transverse movement module comprises a grinding back transverse movement fixing seat, on which a grinding back transverse movement motor is arranged, on the output end of which a grinding back transverse movement screw rod is arranged, on which a grinding back transverse movement slider is sleeved, and which is connected to the rotating fixed plate; A guide bar is arranged on the grinding back transverse movement slide block, and a guide seat is arranged at a position corresponding to the guide bar on the grinding back transverse movement fixed seat, and the guide bar is slidably engaged with the guide seat.

8. The step-back grinding integrated processing mechanism for micro-drilling according to claim 7, characterized in that: The guide seat is provided with a plurality of porous ceramic blocks and a second airway hole, the guide seat is provided with a second air pipe joint, the second airway hole is respectively connected with the second air inlet joint and the porous ceramic block, the porous ceramic block extends out of the end face of the guide seat close to the guide strip, and the second air pipe joint is used for connecting to an external air source.

9. The integrated step-back grinding mechanism for micro-drilling according to any one of claims 2 to 6, characterized in that: The back grinding lifting module includes a back grinding lifting fixed seat, which is connected to the back grinding rotating seat, and a back grinding lifting motor is arranged on the back grinding lifting fixed seat; a back grinding lifting screw rod is arranged on the output end of the back grinding lifting motor, and a back grinding lifting slider is sleeved on the back grinding lifting screw rod, the back grinding lifting slider is connected to the back grinding lifting fixed seat in a sliding limit position, and the back grinding main shaft is connected to the back grinding lifting slider.

10. The integrated step-back grinding mechanism for micro-drilling according to any one of claims 2 to 6, characterized in that: A back grinding calibration mirror is provided on the back grinding rotating seat, and the observation center of the back grinding calibration mirror is flush with the rotation center of the back grinding rotating seat.

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