Positioning punching device

Abstract

The invention relates to a positioning and punching device which comprises a rack, a positioning block is fixed to the upper end of the rack, a bench drill is installed on the side face of the positioning block, and a double-head drill bit is fixed to an output shaft of the bench drill. According to the well-designed double-head drill bit, the vibration reduction block is additionally arranged, so that the problem that the drill bit jumps when the drill bit drills a bevel part is effectively solved, the roundness precision of a drilled positioning hole is guaranteed, and therefore the accuracy of follow-up part installation is guaranteed. And meanwhile, magnetic transmission is utilized, torsional vibration generated due to uneven resistance on the two sides when the drill bit drills a bevel part is reduced, a magnetostrictive rod is additionally arranged in the drill bit, the drill bit generates high-frequency vibration through cooperation of the magnetostrictive rod and a magnetic transmission magnetic field, and the machining precision and the machining efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to a positioning and punching device. Background Art

[0002] In the field of mechanical processing, positioning drilling is a common and critical process. When drilling holes in parts, various problems are often encountered, especially when drilling inclined parts. When drilling inclined parts, traditional drills are prone to drill bit jump due to uneven resistance on both sides of the inclined surface. This jump will not only cause the roundness accuracy of the drilled positioning hole to decrease, but also affect the accuracy of subsequent part installation. In addition, when drilling inclined parts, traditional transmission methods will also produce torsional vibration due to different resistance on both sides, which further reduces processing accuracy and processing efficiency.

[0003] In response to these problems, the prior art has proposed some improvement plans, but there are still certain limitations. For example, the patent with publication number CN106270616A discloses a permanent magnet drilling machine, which uses a permanent magnet mechanism to drive the main shaft to vibrate up and down during the rotation process. During the up and down vibration of the main shaft, the vibration force is offset by the contraction or extension of the telescopic motion mechanism to ensure that the main shaft vibrates smoothly up and down, so that the tool and the workpiece to be drilled come into periodic contact to achieve vibration drilling. However, it still has the following shortcomings: 1. When processing inclined parts, the large instantaneous feed force may damage the drill bit and the repeated up and down vibration will cause the drill bit to repeatedly enter and exit the drilling hole at the beginning of drilling, reducing the accuracy of drilling. 2. During the feeding process of the drill bit, due to the particularity of the processing of inclined parts, when one side of the drill bit contacts the part to start drilling, the other side has not yet contacted the part, which will produce a large torsional vibration. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a positioning and drilling device, which solves the problems existing in the prior art. The well-designed double-head drill effectively prevents the drill from jumping when drilling inclined parts by adding a vibration-damping block, ensuring the roundness accuracy of the drilled positioning hole, thereby ensuring the accuracy of subsequent part installation. The driving shaft drives the driving gear to rotate, and the driving gear meshes with the passive gear, thereby driving the passive gear to rotate. The first magnet on the circumference of the lower end surface of the passive gear generates a magnetic field, which interacts with the second magnet in the conversion mechanism and transmits power to the conversion mechanism through magnetic transmission. The conversion shaft of the conversion mechanism rotates under the action of the magnetic field, and the rubber vibration-damping block at its lower end plays a vibration-damping role. When the conversion shaft rotates, it drives the bearing to rotate, and the fastener at the lower end of the bearing fixes the drill bit, so that the drill bit starts drilling. During the drilling process, the magnetostrictive rod at the upper end of the bearing cooperates with the magnetic transmission magnetic field, and the drill bit generates high-frequency vibration at a speed of about 1000 revolutions per minute. This high-frequency vibration can improve processing accuracy and efficiency. In addition, the hollow structure, partitions, through holes and limiters inside the shell provide support and guarantee for the stable operation of each component, ensuring that the entire device can effectively prevent drill bit jump when drilling inclined parts and reduce torsional vibration caused by uneven resistance on both sides, thereby achieving accurate and efficient drilling operations.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning and punching device, comprising a stand, a positioning block is fixed at the upper end of the stand, a bench drill is installed on the side of the positioning block, and a double-headed drill bit is fixed on the output shaft of the bench drill; the stand provides a stable supporting foundation for the entire device, the positioning block is fixed at the upper end of the stand, and is used to determine the position of the parts to ensure the accuracy of the punching position; the bench drill serves as a mounting platform, and is used to fix and support the double-headed drill bit and other related components to ensure that these components can maintain a relatively stable position and posture during operation, thereby ensuring the accuracy of the drilling work; the double-headed drill bit is designed as a double-headed structure, which means that two holes can be processed at the same time.

[0008] The double-head drill bit includes a shell fixed at the lower end of the bench drill, a driving shaft is installed at the upper end of the shell, a driving gear is fixed at the lower end of the driving shaft, a passive gear is meshed on the side of the driving gear, a passive shaft is fixed at the center of the passive gear, a conversion mechanism is fixed at the middle of the shell, a rubber vibration damping block is fixed at the lower end of the conversion mechanism, a bearing is fixed at the lower end of the rubber vibration damping block, a fastener is fixed at the lower end of the bearing, and a drill bit is fixed at the lower end of the fastener. The shell serves as a mounting carrier for various components of the drill bit, and the internal hollow structure provides space for the installation and operation of various components. The driving shaft is the starting link of the power transmission of the entire device. It is directly connected to the bench drill, receives the power output by the bench drill, and transmits the mechanical energy generated by the bench drill to the subsequent transmission components. It is the "bridge" of the power transmission of the entire device, ensuring that the power can be smoothly transmitted from the power source to the working part of the drill bit. A driving gear is fixed at the lower end of the driving shaft, which drives the driving gear to rotate synchronously through its own rotation, providing the initial power and motion state for the entire transmission system. The rotation of the active gear will trigger the movement of the meshing passive gear, thereby realizing the transmission and conversion of power between different gears, so that the entire transmission system can operate in an orderly manner. The passive shaft is used to support the passive gear. The conversion mechanism is used as a magnetic transmission medium to realize non-contact power transmission. The conversion mechanism is a key part of the magnetic transmission. The first magnet on the circumference of the lower end surface of the passive gear interacts with the second magnet on the circumference of the upper end of the conversion shaft to realize non-contact transmission of power. This method avoids the friction loss and component wear caused by direct contact in traditional mechanical transmission, improves the transmission efficiency and the service life of the device, and when drilling inclined parts, due to the uneven resistance on both sides, the power and movement mode required by the drill bit will also be different. According to this special working condition, the conversion mechanism can convert the horizontal rotational power into power output suitable for inclined drilling, ensure that the drill bit can smoothly perform drilling operations on the inclined surface, and reduce the torsional vibration and drill bit jump caused by uneven resistance. The rubber shock absorber is used when drilling inclined parts. Due to the uneven surface of the parts, the drill bit is easily subjected to uneven force, which causes the drill bit to jump, affecting the roundness accuracy and position accuracy of the drilling. The existence of rubber damping blocks can effectively buffer this uneven force, reduce the amplitude of drill bit jumping, and ensure that the drill bit can always stay in the correct drilling position, thereby ensuring the roundness accuracy of the drilled positioning hole and meeting the accuracy requirements of subsequent parts installation. In the operation of the device, some sudden large impact forces may be encountered, such as the drill bit encountering hard impurities or defects inside the parts. The rubber damping block can absorb these excessive impact forces and prevent them from being directly transmitted to other fragile components, avoiding damage to components due to excessive stress, and ensuring the safety and reliability of the entire device. The bearing is used to prevent the upper rubber damping block from rotating and causing wear. When the fastener rotates, it prevents the rotation from being transmitted to the rubber damping block. The fastener is locked with the conversion shaft, and the power on the conversion shaft is transmitted to the drill bit below, causing the drill bit to rotate at high speed and generate drilling power.

[0009] Preferably, the interior of the shell is a hollow structure, which is divided into two layers by a partition, the upper layer is provided with a first through hole and a second through hole for fixing the active shaft and a third through hole and a fourth through hole for fixing the passive shaft, a limiter is fixed at the lower end of the partition, and a fifth through hole is provided at the lower end of the shell; the partition divides the internal space of the shell into two layers, realizing the layered arrangement of different functional components. The upper layer can be installed with transmission components such as the active shaft and the passive shaft that have high requirements for position accuracy and require a relatively stable environment, and the lower layer can be arranged with conversion mechanisms, bearings and other components directly related to the drill bit, so that the work of each component does not interfere with each other, improving the stability and reliability of the device, the first through hole and the second through hole, these two through holes provide an accurate installation position for the active shaft, through close cooperation with the active shaft, limit the movement of the active shaft in the radial and axial directions, ensure that the active shaft can rotate stably at a fixed position, thereby ensuring the accurate meshing between the active gear and the passive gear, and realizing the effective transmission of power, the third through hole and the fourth through hole, the function is similar to the first through hole and the second through hole, mainly used to fix the passive shaft, to ensure the position accuracy and rotation stability of the passive shaft. The passive shaft rotates under the drive of the passive gear. Its accurate installation position is crucial to maintaining the normal operation of the entire transmission system, and can ensure that the power is smoothly transmitted from the active gear to the subsequent conversion mechanism and drill bit. The limiter is located at the lower end of the partition, and is mainly used to limit the position of the lower components to prevent excessive displacement due to vibration or other external forces during the operation of the device. It plays a limiting role on components such as conversion mechanisms and bearings, ensuring that they are always in the correct position during operation, ensuring the accuracy of power transmission and the stability of the device. The fifth through hole is the channel for the drill bit to extend out of the housing for drilling operations. Its size and position accuracy directly affect the working position and drilling accuracy of the drill bit. By accurately designing the size and position of the fifth through hole, the drill bit can accurately align with the drilling position and maintain a stable working state during the drilling process to ensure that the drilled hole meets the design requirements.

[0010] Preferably, a first magnet groove is provided on the circumference of the lower end surface of the passive gear, and a first magnet is fixed in the first magnet groove. The first magnet groove is used to install the first magnet, which is a key component of the magnetic transmission. When the passive gear rotates, it rotates with the passive gear to generate a dynamic magnetic field. This magnetic field interacts with the second magnet in the conversion mechanism, and the power of the passive gear is transmitted to the conversion mechanism through the magnetic field force, thereby realizing non-contact power transmission. This magnetic transmission method avoids friction loss and component wear in traditional mechanical transmission, and improves transmission efficiency and the service life of the device.

[0011] Preferably, the conversion mechanism includes a conversion housing, the conversion housing is provided with a conversion shaft, the upper end circumference of the conversion shaft is provided with a second magnet groove, and the second magnet groove is fixed with a second magnet; the conversion housing is used to support the rubber shock-absorbing block below, and provides a solid protective barrier for the key components such as the internal conversion shaft and the second magnet. During the operation of the device, it can prevent external dust, impurities, oil stains and other substances from entering the interior, avoid these pollutants from interfering with and damaging the normal operation of the components, ensure that the internal components operate in a relatively clean and stable environment, and extend the service life of the components. The conversion shaft is connected to the transmission link. The conversion shaft is the core component of power transmission in the conversion mechanism. One end of it is connected to the second magnet to receive power transmitted from the passive gear through magnetic transmission, and the other end is connected to the fastener to further transmit the power to the drill bit, so that the drill bit can obtain the power required for rotation and realize the drilling operation. In the whole power transmission process, the conversion shaft plays a key role in connecting the upper and lower parts, ensuring that the power can be smoothly transmitted between different parts. The second magnet slot provides a precise installation position for the second magnet, ensuring that the second magnet can be firmly installed on the upper circumference of the conversion shaft. The second magnet is one of the key elements of magnetic transmission. It cooperates with the first magnet on the circumference of the lower end face of the passive gear to achieve non-contact power transmission through the action of magnetic field force. During the operation of the device, the magnetic field generated by the first magnet on the passive gear and the magnetic field generated by the second magnet attract each other, thereby transmitting the rotational power of the passive gear to the conversion shaft.

[0012] Preferably, a sixth through hole is arranged on the circumference of the bottom of the conversion housing, and third magnet slots are arranged in pairs on both sides of the sixth through hole, and third magnets are arranged inside the third magnet slots; the sixth through hole is used to pass the magnetostrictive rod so that the magnetostrictive rod can extend into the conversion device, and the third magnet slots are arranged on both sides of each sixth through hole, such as Figure 4 Shown and Figure 5 As shown, the first magnet and the second magnet are arranged uniformly in N circles. When the rotation speed reaches 1000 rpm, each time each second magnet passes through the sixth through hole, it will pass through the third magnets on both sides, causing two magnetic field changes. At this time, the number of magnetic field changes around the sixth through hole is: 2000N.

[0013] Preferably, a magnetostrictive rod is fixed to the upper end of the bearing, the magnetostrictive rod is made of iron-nickel alloy, a protector is fixed to the center of the bearing, the magnetostrictive rod is used to generate high-frequency vibration, and the protector is used to ensure that the position of the rubber shock-absorbing block does not move during vibration and hit the conversion shaft.

[0014] Preferably, a seventh through hole is arranged on the circumference of the rubber vibration damping block; the seventh through hole is used for passing the magnetostrictive rod so that the magnetostrictive rod can extend into the interior of the conversion device.

[0015] (III) Beneficial effects

[0016] The purpose of the present invention is to provide a positioning and drilling device. The positioning and drilling device provided by the present invention can reduce torsional vibration and generate new high-frequency vibration by combining magnetic force transmission and magnetostrictive rods. The high-frequency vibration for rapid chip removal can make it easier for chips to be discharged from the drill hole. During the drilling process, high-frequency vibration will cause the chips to produce a slight displacement, making it easier for them to leave the drilling area, avoiding chip accumulation that affects the drilling progress, and high-frequency vibration can reduce the cutting force of the drill bit during the drilling process. The reduction in cutting force can not only reduce the wear of the drill bit, but also further reduce the drill bit's bounce and torsional vibration, thereby achieving precise processing and anti-blocking of drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the present invention;

[0018] Figure 2 is a schematic diagram of a double-ended drill bit in the present invention;

[0019] Figure 3 is a cross-sectional view of the housing in the present invention;

[0020] Figure 4 is an enlarged view of the passive gear in the present invention;

[0021] Figure 5 is a schematic diagram of the conversion mechanism in the present invention;

[0022] Figure 6 is a schematic diagram of a conversion housing in the present invention;

[0023] Figure 7 is a schematic diagram of a bearing in the present invention;

[0024] Figure 8 It is a schematic diagram of the rubber vibration damping block in the present invention.

[0025] In the figure: M-workpiece, 1-bench, 2-positioning block, 3-bench drill, 4-double-head drill, 401-housing, 4011-partition, 4012-third through hole, 4013-fourth through hole, 4014-first through hole, 4015-second through hole, 4016-stopper, 4017-fifth through hole, 402-driving shaft, 403-driving gear, 404-passive gear, 4041-first magnet slot, 4042-first magnet , 405-passive shaft, 406-conversion mechanism, 4061-conversion housing, 4062-conversion shaft, 4063-second magnet slot, 4064-second magnet, 4065-sixth through hole, 4066-third magnet slot, 4067-third magnet, 407-rubber vibration damping block, 4071-seventh through hole, 408-bearing, 4081-magnetostrictive rod, 4082-protector, 409-fastener, 410-drill bit. DETAILED DESCRIPTION

[0026] The following will be combined with the attached examples of the present invention Figure 1-Figure 8 A clear and complete description is given to the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, the present invention provides a technical solution: a positioning and punching device, comprising a stand 1, a positioning block 2 is fixed at the upper end of the stand 1, a bench drill 3 is installed on the side of the positioning block 2, and a double-headed drill bit 4 is fixed on the output shaft of the bench drill 3; the stand 1 provides a stable supporting foundation for the entire device, the positioning block 2 is fixed at the upper end of the stand 1, and is used to determine the position of the workpiece M to ensure the accuracy of the punching position, the bench drill 3 serves as a mounting platform, and is used to fix and support the double-headed drill bit 4 and other related components to ensure that these components can maintain a relatively stable position and posture during work, thereby ensuring the accuracy of the drilling work, and the double-headed drill bit 4 is designed as a double-headed structure, which means that two holes can be processed at the same time.

[0028] like Figure 2As shown, the double-head drill 4 includes a housing 401 fixed to the lower end of the bench drill 3, a driving shaft 402 is installed at the upper end of the housing 401, a driving gear 403 is fixed to the lower end of the driving shaft 402, a passive gear 404 is meshed with the side of the active gear 403, a passive shaft 405 is fixed to the center of the passive gear 404, a conversion mechanism 406 is fixed to the middle of the housing 401, a rubber damping block 407 is fixed to the lower end of the conversion mechanism 406, a bearing 408 is fixed to the lower end of the rubber damping block 407, a fastener 409 is fixed to the lower end of the bearing 408, and a drill 410 is fixed to the lower end of the fastener 409; the housing 401 As the mounting carrier of the drill bit components, the internal hollow structure provides space for the installation and operation of the components. The driving shaft 402 is the starting link of the power transmission of the entire device. It is directly connected to the bench drill 3, receives the power output by the bench drill 3, and transmits the mechanical energy generated by the bench drill 3 to the subsequent transmission components. It is the "bridge" of the power transmission of the entire device, ensuring that the power can be smoothly transmitted from the power source to the working part of the drill bit 410. A driving gear 403 is fixed to the lower end of the driving shaft 402, which drives the driving gear 403 to rotate synchronously through its own rotation, providing the initial power and motion state for the entire transmission system. The rotation of the driving gear 403 will trigger the movement of the meshing driven gear 404, thereby realizing the transmission and conversion of power between different gears, so that the entire transmission system can operate in an orderly manner. The driven shaft 405 is used to support the driven gear 404. The conversion mechanism 406 is used as a magnetic transmission medium to realize non-contact power transmission. The conversion mechanism 406 is a key part of the magnetic transmission. The first magnet 4042 on the circumference of the lower end surface of the driven gear 404 interacts with the second magnet 4064 on the circumference of the upper end of the conversion shaft 4062 to realize non-contact transmission of power. This method avoids the friction loss and component wear caused by direct contact in traditional mechanical transmission, improves the transmission efficiency and the service life of the device, and when drilling holes in inclined parts, due to the uneven resistance on both sides, the power and movement mode required by the drill bit 410 will also be different. The conversion mechanism 406 can convert the horizontal rotational power into the power output adapted to the inclined drilling according to this special working condition, ensure that the drill bit 410 can smoothly perform the drilling operation on the inclined surface, reduce the torsional vibration and the jumping of the drill bit 410 caused by the uneven resistance, and the rubber damping block 407 is used for drilling the inclined surface parts. Due to the uneven surface of the parts, the drill bit 410 is easily subjected to uneven force, which causes the drill bit 410 to jump, affecting the roundness accuracy and position accuracy of the drilling. The existence of the rubber damping block 407 can effectively buffer this uneven force, reduce the jumping amplitude of the drill bit 410, and ensure that the drill bit 410 can always remain in the correct drilling position, thereby ensuring the roundness accuracy of the drilled positioning hole and meeting the accuracy requirements of the subsequent parts installation. In addition, during the operation of the device, some sudden large impact forces may be encountered, such as the drill bit 410 encountering hard impurities or defects inside the parts.The rubber shock absorber 407 can absorb these excessive impact forces and prevent them from being directly transmitted to other fragile components, thereby avoiding damage to components due to excessive stress and ensuring the safety and reliability of the entire device. The bearing 408 is used to prevent the upper rubber shock absorber block 407 from rotating and causing wear. When the fastener 409 rotates, it prevents the rotation from being transmitted to the rubber shock absorber block 407. The fastener 409 is locked with the conversion shaft 4062, and the power on the conversion shaft 4062 is transmitted to the drill bit 410 below, so that the drill bit 410 rotates at high speed to generate power for drilling.

[0029] like Figure 3As shown, the interior of the shell 401 is a hollow structure, which is divided into two layers, an upper layer and an lower layer, by a partition 4011. The upper layer is provided with a first through hole 4014 and a second through hole 4015 for fixing the active shaft 402 and a third through hole 4012 and a fourth through hole 4013 for fixing the passive shaft 405. A limiter 4016 is fixed at the lower end of the partition 4011, and a fifth through hole 4017 is provided at the lower end of the shell 401. The partition 4011 divides the internal space of the shell 401 into two layers, thereby realizing a layered arrangement of different functional components. The upper layer can be installed with transmission components such as the active shaft 402 and the passive shaft 405 that have high requirements for position accuracy and require a relatively stable environment, and the lower layer can be arranged with components such as the conversion mechanism 406 and the bearing 408 that are directly related to the drill bit 410, so that the work of each component does not interfere with each other, thereby improving the stability and reliability of the device. The first through hole 4014 and the second through hole 4015 provide an accurate installation position for the active shaft 402. Through close cooperation with the active shaft 402, the radial and axial movement of the active shaft 402 is limited, ensuring that the active shaft 402 can rotate stably at a fixed position, thereby ensuring accurate engagement between the active gear 403 and the passive gear 404, and realizing effective transmission of power. The third through hole 4012 and the fourth through hole 4013 have similar functions to the first through hole 4014 and the second through hole 4015, and are mainly used to fix the passive shaft 405 to ensure the position accuracy and rotation stability of the passive shaft 405. The passive shaft 405 rotates under the drive of the passive gear 404. Its accurate installation position is crucial to maintaining the normal operation of the entire transmission system, and can ensure that the power is smoothly transmitted from the active gear 403 to the subsequent conversion mechanism 406 and the drill bit 410. The limiter 4016 is located at the lower end of the partition 4011, and is mainly used to limit the position of the lower layer components to prevent them from excessive displacement due to vibration or other external forces during the operation of the device. It plays a limiting role on the conversion mechanism 406 and the bearing 408 and other components to ensure that they are always in the correct position during work, ensuring the accuracy of power transmission and the stability of the device. The fifth through hole 4017 is the channel for the drill bit 410 to extend out of the housing for drilling operations. Its size and position accuracy directly affect the working position and drilling accuracy of the drill bit 410. By accurately designing the size and position of the fifth through hole 4017, the drill bit 410 can accurately align with the drilling position, and maintain a stable working state during the drilling process, ensuring that the drilled hole meets the design requirements.

[0030] like Figure 4As shown, a first magnet groove 4041 is provided on the circumference of the lower end surface of the passive gear 404, and a first magnet 4042 is fixed in the first magnet groove 4041; the first magnet groove 4041 is used to install the first magnet 4042, which is a key component of the magnetic transmission. When the passive gear 404 rotates, the first magnet 4042 rotates with the passive gear 404 to generate a dynamic magnetic field. This magnetic field interacts with the second magnet 4064 in the conversion mechanism 406, and transmits the power of the passive gear to the conversion mechanism 406 through the magnetic field force, thereby realizing non-contact power transmission. This magnetic transmission method avoids friction loss and component wear in traditional mechanical transmission, and improves transmission efficiency and the service life of the device.

[0031] like Figure 5 As shown, the conversion mechanism 406 includes a conversion shell 4061, the conversion shell 4061 is provided with a conversion shaft 4062, the upper end circumference of the conversion shaft 4062 is provided with a second magnet groove 4063, and the second magnet groove 4063 is fixed with a second magnet 4064; the conversion shell 4061 is used to support the rubber shock-absorbing block 407 below, and provides a solid protective barrier for key components such as the internal conversion shaft 4062, the second magnet 4064 and so on. During the operation of the device, it can prevent external dust, impurities, oil and other substances from entering the interior, avoid these pollutants from interfering with and damaging the normal operation of the components, ensure that the internal components operate in a relatively clean and stable environment, and extend the service life of the components. The conversion shaft 4062 is connected to the transmission link. The conversion shaft 4062 is the core component of the power transmission in the conversion mechanism 406. One end of it is connected to the second magnet 4064 to receive the power transmitted from the passive gear 404 through magnetic transmission, and the other end is connected to the fastener 409 to further transmit the power to the drill bit 410, so that the drill bit 410 can obtain the power required for rotation to achieve the drilling operation. In the whole power transmission process, the conversion shaft 4062 plays a key role in connecting the upper and lower parts, ensuring that the power can be smoothly transmitted between different parts. The second magnet slot 4063 provides a precise installation position for the second magnet 4064, ensuring that the second magnet 4064 can be firmly installed on the upper end circumference of the conversion shaft 4063. The second magnet 4064 is one of the key elements of magnetic transmission. It cooperates with the first magnet 4042 on the lower end surface circumference of the passive gear 404 to achieve non-contact power transmission through the action of magnetic field force. During the operation of the device, the magnetic field generated by the first magnet 4042 on the passive gear 404 and the magnetic field generated by the second magnet 4064 attract each other, thereby transmitting the rotational power of the passive gear 404 to the conversion shaft 4062.

[0032] like Figure 6As shown, the bottom circumference of the conversion housing 4061 is provided with sixth through holes 4065, and third magnet slots 4066 are provided in pairs on both sides of the sixth through holes 4065, and third magnets 4067 are provided inside the third magnet slots 4066; the sixth through holes 4065 are used to pass the magnetostrictive rod 4081, so that the magnetostrictive rod 4081 can extend into the conversion device 406, and the third magnet slots 4066 are arranged on both sides of each sixth through hole 4065, as shown in FIG. Figure 4 Shown and Figure 5 As shown, the first magnet 4042 and the second magnet 4064 are arranged uniformly in N circles. When the rotation speed reaches 1000 rpm, each time each second magnet 4064 rotates and passes through the sixth through hole 4065, it will pass through the third magnets 4066 on both sides, causing two magnetic field changes. At this time, the number of magnetic field changes around the sixth through hole 4065 is: 2000N.

[0033] like Figure 7 As shown, a magnetostrictive rod 4081 is fixed to the upper end of the bearing 408, and the magnetostrictive rod 4081 is made of iron-nickel alloy. A protector 4082 is fixed to the center of the bearing 408; the magnetostrictive rod 4081 is used to generate high-frequency vibration, and the protector 4082 is used to ensure that the position of the rubber shock-absorbing block 407 will not move during vibration and hit the conversion shaft 4062.

[0034] In general, the design of the device can reduce the vibration during drilling by using magnetic force transmission and vibration damping blocks. When the magnetostrictive rod 4081 is subjected to the external magnetic field, its internal magnetic domain structure will change, resulting in a change in the lattice spacing of the material, which is manifested as a change in the length or volume of the material on a macro scale. In the positioning and drilling device, the magnetostrictive rod 4081 is made of iron-nickel alloy, which has a relatively obvious magnetostrictive property and can produce significant telescopic deformation under the action of a magnetic field. Each magnetostrictive rod 4081 will produce a vibration frequency of 2000N per minute, thereby driving the vibration of the drill bit 410, which can provide the following advantages:

[0035] Reduce cutting errors

[0036] Uniform cutting: High-frequency vibration makes the depth and force of each cut of the drill bit 410 more uniform during the cutting process. In the traditional drilling method, the drill bit 410 may produce inconsistent cutting depth due to material unevenness or changes in cutting force, resulting in deviations in the diameter of the hole. High-frequency vibration can make the drill bit perform small and uniform cutting on the material in each vibration cycle, thereby ensuring the diameter accuracy of the hole and improving the roundness and cylindricity of the hole.

[0037] Offsetting offset forces: When drilling some materials with uneven hardness, the drill bit 410 is easily offset by forces in different directions. High-frequency vibration can offset these uneven forces by continuously adjusting the position of the drill bit, so that the drill bit 410 always stays on the correct drilling path, reduces the drilling offset error caused by material characteristics, and improves the drilling position accuracy.

[0038] Improved surface quality

[0039] Refined surface texture: High-frequency vibration can break and discharge the material fragments cut by the drill bit 410 into smaller pieces, making the texture of the hole wall surface more delicate. Compared with the drilling method without vibration, the roughness of the hole wall surface is lower, which is conducive to the installation and matching of subsequent parts and improves the connection tightness and sealing between parts.

[0040] Eliminating micro defects: Under the action of high-frequency vibration, the drill bit 410 can generate a small impact force at the moment of contact with the material, which helps to eliminate micro defects on the surface of the hole wall, such as small cracks, burrs, etc. These micro defects are often difficult to avoid in traditional drilling methods, but they will affect the quality of the hole and the service life of the parts. Through the action of high-frequency vibration, the surface quality of the hole wall can be improved, and the reliability and durability of the parts can be enhanced.

[0041] Improving processing efficiency

[0042] Accelerate material removal

[0043] Enhanced cutting ability: High-frequency vibration gives the drill bit 410 a stronger cutting ability. During the vibration process, the contact mode between the cutting edge of the drill bit 410 and the material changes from traditional static cutting to dynamic impact cutting. This impact cutting mode can make the material easier to break and remove, especially for some materials with higher hardness. High-frequency vibration can effectively improve the cutting efficiency of the drill bit 410 and reduce the drilling time.

[0044] Reduce friction resistance: Vibration can reduce the friction coefficient between the drill bit 410 and the material, and reduce friction. During the drilling process, friction is one of the important factors that hinder the advancement of the drill bit, which consumes a lot of energy and causes the drill bit 410 to wear more. High-frequency vibration allows the drill bit 410 to continuously change the contact state with the material during the cutting process, reducing continuous friction, thereby reducing the energy consumption of the drill bit 410 and improving the speed and efficiency of drilling.

[0045] Prevent drill bit from clogging

[0046] Timely discharge of chips: During the drilling process, a large amount of chips will be generated. High-frequency vibration can make it easier for the chips to be discharged from around the drill bit 410, avoiding the accumulation and blockage of chips at the drill bit. A good chip discharge channel can ensure that the drill bit 410 always maintains a good cutting state, reduce the wear of the drill bit 410 and the interruption of drilling caused by chip blockage, and improve the continuity and efficiency of drilling.

[0047] Drilling on inclined surfaces

[0048] Ensure uniform force: When drilling on inclined parts, the force on the drill bit 410 is uneven, which is prone to vibration and deviation. High-frequency vibration can adjust the cutting angle and force of the drill bit 410 so that each point on the inclined surface of the drill bit 410 can be uniformly stressed, ensuring the verticality and accuracy of the drill hole 410. In addition, high-frequency vibration can also reduce the wear and damage of the drill bit caused by the resistance of the inclined surface, extend the service life of the drill bit 410, and improve the drilling efficiency and quality under special working conditions.

[0049] like Figure 8 As shown, a seventh through hole 4071 is arranged on the circumference of the rubber vibration damping block 407 ; the seventh through hole 4071 is used to pass the magnetostrictive rod 4081 so that the magnetostrictive rod 4081 can extend into the interior of the conversion device 406 .

[0050] Working principle:

[0051] The two sides of the workpiece M are placed close to the positioning block 2, and the power supply is turned on. At this time, the main shaft of the bench drill 3 drives the active shaft 402 to rotate, and the transmission is carried out through the active gear 403 and the passive gear 404, driving the conversion shaft 4062 to rotate. The fastener 409 is locked with the conversion shaft 4062, driving the drill bit 410 to rotate at high speed. When the drill bit 410 generates vibration, the vibration is transmitted to the rubber damping block 407 through the bearing 408 of the fastener 409, and is eliminated by the rubber damping block 407. When the drill bit 410 generates torsional vibration, the vibration stops at the conversion shaft 4062, and the main shaft is not affected, and a constant torque can be output, reducing the generation of vibration. When the second magnet 4064 passes through the third magnet 4067, an alternating magnetic field is generated, driving the magnetostrictive rod 408 to vibrate, and the vibration generated by the magnetostrictive rod 4081 is transmitted to the drill bit 410, thereby improving the efficiency and accuracy of drilling.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning and punching device, comprising a stand (1), a positioning block (2) being fixed at the upper end of the stand (1), a bench drill (3) being mounted on the side of the positioning block (2), and a double-head drill bit (4) being fixed on the output shaft of the bench drill (3); The double-head drill bit (4) comprises a housing (401) fixed to the lower end of the bench drill (3); a driving shaft (402) is installed at the upper end of the housing (401); a driving gear (403) is fixed to the lower end of the driving shaft (402); a passive gear (404) is meshed with the side of the driving gear (403); a passive shaft (405) is fixed at the center of the passive gear (404); a conversion mechanism (406) is fixed to the middle of the housing (401); a rubber vibration damping block (407) is fixed to the lower end of the conversion mechanism (406); a bearing (408) is fixed to the lower end of the rubber vibration damping block (407); a fastener (409) is fixed to the lower end of the bearing (408); and a drill bit (410) is fixed to the lower end of the fastener (409).

2. A positioning punching device according to claim 1, characterized in that: The interior of the shell (401) is a hollow structure, which is divided into two layers, an upper layer and an lower layer, by a partition (4011); the upper layer is provided with a first through hole (4014) and a second through hole (4015) for fixing the active shaft (402), and a third through hole (4012) and a fourth through hole (4013) for fixing the passive shaft (405); a limiter (4016) is fixed at the lower end of the partition (4011); and a fifth through hole (4017) is provided at the lower end of the shell (401).

3. A positioning punching device according to claim 1, characterized in that: A first magnet groove (4041) is arranged on the circumference of the lower end surface of the driven gear (404), and a first magnet (4042) is fixed in the first magnet groove (4041).

4. A positioning punching device according to claim 1, characterized in that: The conversion mechanism (406) comprises a conversion housing (4061), the conversion housing (4061) is provided with a conversion shaft (4062), a second magnet groove (4063) is provided on the circumference of the upper end of the conversion shaft (4062), and a second magnet (4064) is fixed in the second magnet groove (4063).

5. A positioning punching device according to claim 1, characterized in that: The bottom circumference of the conversion housing (4061) is provided with a sixth through hole (4065), and third magnet slots (4066) are provided in pairs on both sides of the sixth through hole (4065), and third magnets (4067) are provided inside the third magnet slots (4066).

6. A positioning punching device according to claim 1, characterized in that: A magnetostrictive rod (4081) is fixed to the upper end of the bearing (408), the magnetostrictive rod (4081) is made of an iron-nickel alloy, and a protector (4082) is fixed to the center of the bearing (408).

7. A positioning punching device according to claim 1, characterized in that: The rubber vibration-damping block (407) is provided with a seventh through hole (4071) on its circumference.

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