Cutting edge chamfering grinding machine and grinding method for front-throwing tap

Abstract

The invention relates to the technical field of tap production, and discloses a cutting edge chamfering grinder and a grinding method for a front-throwing tap. The device comprises an angle grinder body, the angle grinder body comprises an outer shell, a grinding assembly is arranged on the inner bottom wall of the outer shell, and a supporting assembly is arranged on the lower surface of the outer shell. The grinding assembly comprises a conveying structure, and the conveying structure is located below the grinding assembly. The grinding assembly comprises a first grinding wheel, a second grinding wheel and a third grinding wheel. When the tap passes through a meniscus located below a detection plate during movement, if there is a burr in a groove on the tap, an extrusion force is generated on the bottom end of a detection needle, so that the detection needle moves upward, and the size of the burr is judged according to the stretching amount of a spring located on the detection needle, so as to detect the size of the burr in the tap groove, and control a first electromagnet to move the first grinding wheel longitudinally according to the detection data, so as to grind and clean different burr sizes according to the grinding intensity generated at different heights.

Description

Technical Field

[0001] The invention relates to the technical field of tap production, and in particular to a cutting edge chamfering grinder and a grinding method for a forward-throwing tap. Background Art

[0002] A tap is a tool for machining internal threads. It can be divided into spiral groove taps, angled taps, straight groove taps, and pipe thread taps according to its shape. It can be divided into hand taps and machine taps according to its use environment. It can be divided into metric, American, and imperial taps according to its specifications. Taps are the most mainstream machining tools used by manufacturing operators when tapping.

[0003] The Chinese patent application number 202222379614.8 discloses an angle grinder for tap production, including a base plate, a support plate fixedly connected to the rear side of the right side of the top of the base plate, a cylinder fixedly connected to the top of the support plate, a motor fixedly connected to the left side of the cylinder, and a grinding disc fixedly connected to the output end of the motor. The utility model adjusts the angle by shaking the threaded rod with a handle, and the threaded rod rotates to drive the threaded sleeve to move left or right, drives the gear to rotate left or right through the tooth plate, and drives the sleeve to rotate left or right through the rotating rod. The force generated by the offset during the tap grinding process will squeeze the spring through the clamping plate, the movable rod and the limit plate. The elastic force generated by the spring offsets the offset force to make it clamped more firmly, thereby achieving the advantages of easy angle adjustment and firm clamping.

[0004] In the above-mentioned prior art, during the tap grinding process, the tap is locally overheated, deformed and torn, thereby forming burrs of different sizes. However, the prior art is unable to detect the burrs and perform secondary grinding according to the burrs of different sizes formed on the tap surface to ensure that the burrs in the grinding area are completely removed. In addition, during grinding, only one set of grinding wheels is used to grind the surface of the tap to a low level, and the grinding disc needs to be replaced frequently, which increases the time cost required for processing. In addition, when grinding the tap, the tap is fixed at one end, which is not only convenient for replacing the tap and saving the standing space of the fixed component, but also the square plate is adjusted to a variety of different angles for grinding. When the grinder contacts the tap, the tap will shake and frequently contact the grinder, resulting in the tap being worn.

[0005] Therefore, it is necessary to solve the above problems by a cutting edge chamfering grinder and a grinding method for a front-throwing tap. Summary of the invention

[0006] The object of the present invention is to provide a cutting edge chamfering grinder and grinding method for a front-throwing tap, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutting edge chamfering grinder for a front-throwing tap, comprising an angle grinder body, the angle grinder body comprising a shell, a grinding assembly is provided on the inner bottom wall of the shell, and a supporting assembly is provided on the lower surface of the shell, the grinding assembly comprises a conveying structure, and the conveying structure is located below the grinding assembly, the grinding assembly comprises a first grinding wheel, a second grinding wheel and a third grinding wheel, the first grinding wheel is located in the middle of the second grinding wheel and the third grinding wheel, and the second grinding wheel and the third grinding wheel are arranged oppositely inside the shell, a rotating shaft is provided inside the second grinding wheel and the third grinding wheel, and the second grinding wheel and the third grinding wheel are provided with a support through the rotating shaft;

[0008] The conveying structure located below the grinding assembly includes an electric-controlled slide rail and a sliding block. The interior of the electric-controlled slide rail is connected to the bottom of the sliding block, so that the sliding block can slide left and right in the electric-controlled slide rail. A load-bearing rod is provided on the upper surface of the sliding block, and a connecting rod is provided at the end of the load-bearing rod away from the sliding block, and a support frame is provided at the end of the connecting rod away from the load-bearing rod. A driving motor is provided on one side surface of the support frame, and a limiting sleeve is provided at the output end of the driving motor, and a tap is provided inside the limiting sleeve.

[0009] Preferably, a fixing ring is provided on the outer surface of the limiting sleeve, a telescopic part is provided on one side of the fixing ring, and a limiting ring is provided on the end of the telescopic part away from the fixing ring, and a clamping plate is provided on one side of the limiting ring, and the number of the clamping plates is three, and each clamping plate is distributed in a circular array on one side of the limiting ring.

[0010] Preferably, a concave plate is provided on one side of the inner wall of the shell, and a sliding rod is provided on the side of the concave plate close to the grinding assembly, a detection plate is provided on the bottom end of the sliding rod, and a meniscus is provided on the side of the detection plate away from the sliding rod, the bottom of the concave plate is interconnected with the pillars on the second grinding wheel and the third grinding wheel, the pillar on the third grinding wheel is slidably connected with the concave plate, and an electric control push rod is provided on the top of the pillar on the third grinding wheel for controlling the third grinding wheel to move longitudinally along the inner side of the concave plate;

[0011] A detection needle is provided on the side of the detection plate facing the concave plate. The detection needle penetrates the detection plate and is arranged on the inner side of the meniscus. It is used to detect the size of burrs in the tap groove when the tap moves. A spring is provided on the surface of the detection needle, and the bottom end of the spring is arranged on the surface of the detection plate.

[0012] Preferably, a rotating shaft is provided inside the first grinding wheel, a second electromagnet is provided at one end of the rotating shaft close to the concave plate, a return spring is provided on the upper surface of the second electromagnet, and a first electromagnet is provided at one end of the return spring away from the second electromagnet, a baffle is provided on the upper surface of the first electromagnet, and the left and right sides of the baffle are arranged on the upper surface of the concave plate.

[0013] Preferably, the number of the second electromagnet and the number of the first electromagnet are both two, and the second electromagnet and the first electromagnet are relatively arranged on the left and right sides of the first grinding wheel, and each of the second electromagnets is slidably arranged on the inner side of the concave plate.

[0014] Preferably, when the first electromagnet is in a working state, the second electromagnet slides downward along the inner side of the concave plate, and the return spring is in a stretched state;

[0015] When the first electromagnet is in a power-off state, the second electromagnet slides upward along the inner side of the concave plate under the pulling force of the return spring, and the return spring returns to an initial state.

[0016] Preferably, the support assembly includes a support plate and a support pad, the number of the support pads is four, and each of the support pads is located at the four corners of the bottom of the support plate, the support plate is located at the bottom of the angle grinder body, and the upper surface of the support plate is fixedly connected to the bottom of the angle grinder body.

[0017] The present invention also provides a grinding method for a cutting edge chamfering grinder for a front-throwing tap, the method comprising the following steps:

[0018] S1. First, fix the tap inside the limit sleeve, then control the driving motor to control the tap to rotate along the axis of the end of the driving motor output shaft to adjust the angle of the tap, and grind the surface of the tap with the first grinding wheel, and control the electric control slide rail to make the sliding block slide along its surface to adjust the position of the tap, so as to grind the tap surface in different areas;

[0019] S2. When the conveying assembly conveys the tap to the inside of the angle grinder body, the tap will keep in contact with the inner side of the meniscus on the detection plate, and cooperate with the detection needle and the spring to detect the size of the burr in the tap groove, and the size of the burr can be judged by the stretching amount of the spring on the detection needle;

[0020] S3. Finally, the first electromagnet in the baffle controls the second electromagnet to slide along the inner wall of the concave plate to adjust the height of the first grinding wheel, and adjusts the grinding height of the first grinding wheel in real time according to the detection result in the detection plate to achieve the effect of grinding and removing burrs of different sizes.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention sets a detection plate, a detection needle, a spring and other components to cooperate with each other. When the tap moves through the meniscus below the detection plate, if there is a burr in the groove on the tap, an extrusion force is generated on the bottom end of the detection needle, so that the detection needle moves upward, and the size of the burr is judged according to the stretching amount of the spring on the detection needle, so as to detect the size of the burr in the tap groove, and control the first electromagnet to move the first grinding wheel longitudinally according to the detection data, so as to grind and clean the burrs of different sizes according to the grinding intensity generated at different heights.

[0023] 2. The present invention sets the first electromagnet and the second electromagnet and other components to cooperate with each other. When the first electromagnet is controlled so that the two second electromagnets below are at the same height, the first grinding wheel does not deflect, and only the axial area of ​​the tap groove is ground. When the first electromagnet is controlled so that the two second electromagnets are not at the same height, the rotating shaft located in the axial area of ​​the first grinding wheel will deflect, and the first grinding wheel will also deflect accordingly, thereby achieving the effect of grinding the edge area in the groove on the tap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the tap and related structures of the present invention;

[0027] Figure 4 It is a schematic diagram of the baffle and related structures of the present invention;

[0028] Figure 5 This is a schematic diagram of the detection board and related structures of the present invention;

[0029] Figure 6 This is a schematic diagram of the first electromagnet of the present invention in a working state;

[0030] Figure 7 This is a schematic diagram of the first grinding wheel of the present invention tilting to the right;

[0031] Figure 8 This is a schematic diagram of the first grinding wheel of the present invention tilting to the left.

[0032] In the figure: 1. Angle grinder body; 101. Shell; 102. Concave plate; 103. Slide rod; 104. Detection plate; 105. Spring; 106. Baffle; 107. First electromagnet; 108. Second electromagnet; 109. Rotating shaft; 2. Support assembly; 201. Support plate; 202. Support pad; 3. Grinding assembly; 301. Drive motor; 302. Sliding block; 303. Support frame; 304. Fixed ring; 305. Telescopic member; 306. Load-bearing rod; 307. Limiting ring; 308. Tap; 309. Electric control slide rail; 310. First grinding wheel; 311. Second grinding wheel; 312. Third grinding wheel. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0034] The present invention provides Figures 1 to 8 The cutting edge chamfering grinder for front-throwing taps shown in the figure includes an angle grinder body 1, the angle grinder body 1 includes a shell 101, a grinding assembly 3 is provided on the inner bottom wall of the shell 101, and a support assembly 2 is provided on the lower surface of the shell 101, the grinding assembly 3 includes a conveying structure, and the conveying structure is located below the grinding assembly 3, and is used to convey the tap 308, the grinding assembly 3 includes a first grinding wheel 310, a second grinding wheel 311 and a third grinding wheel 312, the first grinding wheel 310 is located in the middle of the second grinding wheel 311 and the third grinding wheel 312, and the second grinding wheel 311 and the third grinding wheel 312 are arranged relatively on the shell Inside 101, the conveying structure located below the grinding component 3 includes an electric control slide rail 309 and a sliding block 302. The inside of the electric control slide rail 309 is connected to the bottom of the sliding block 302, so that the sliding block 302 can slide left and right in the electric control slide rail 309. A load-bearing rod 306 is provided on the upper surface of the sliding block 302, and a connecting rod is provided at one end of the load-bearing rod 306 away from the sliding block 302, and a support frame 303 is provided at one end of the connecting rod away from the load-bearing rod 306. A driving motor 301 is provided on one side surface of the support frame 303, and a limiting sleeve is provided at the output end of the driving motor 301, and a tap 308 is provided inside the limiting sleeve.

[0035] like Figure 2As shown, in order to detect the burrs inside the grooves on the surface of the tap 308 and their size data, a concave plate 102 is provided on one side of the inner wall of the housing 101, and a sliding rod 103 is provided on the side of the concave plate 102 close to the grinding assembly 3, a detection plate 104 is provided at the bottom end of the sliding rod 103, and a meniscus is provided on the side of the detection plate 104 away from the sliding rod 103. During the movement of the tap 308, it always maintains a parallel relationship with the inner side of the meniscus, that is, the height of the tap 308 does not change, so that the outer diameter of the tap 308 will always be in the detection area inside the meniscus and will not deviate. In order to prevent the burrs on the surface of the tap 308 from being detected, a detection needle is provided on the side of the detection plate 104 facing the concave plate 102. The detection needle penetrates the detection plate 104 and is arranged on the inner side of the meniscus. When the detection needle contacts the burr, an extrusion force is generated to cause the detection needle to slide upward, and the spring on the detection needle will be in a stretched state. At this time, the size of the burr is recorded according to the stretching amount of the spring. The spring is used to detect the size of the burr in the groove of the tap 308 when the tap 308 moves. A spring 105 is provided on the surface of the detection needle, and the bottom end of the spring 105 is arranged on the surface of the detection plate 104.

[0036] like Figure 4 As shown, in order to ensure that the first grinding wheel 310 can grind the tap 308 normally and adjust the height and inclination of the first grinding wheel 310 according to the detection data, so as to facilitate grinding any position of the groove of the tap 308, a rotating shaft 109 is provided inside the first grinding wheel 310, and a micro-electric control is arranged on the rotating shaft 109 to control the first grinding wheel 310 to rotate, so as to achieve the effect of grinding the tap 308, and a second electromagnet 108 is provided at one end of the rotating shaft 109 close to the concave plate 102, and a return spring is provided on the upper surface of the second electromagnet 108. When the first electromagnet 107 is not in a working state, the second electromagnet 108 is controlled by the tension of the return spring to slide along the inner wall of the concave plate 102 to the initial position, so as to achieve the effect of resetting, and a first electromagnet 107 is provided at one end of the return spring away from the second electromagnet 108, and a baffle 106 is provided on the upper surface of the first electromagnet 107, and the left and right sides of the baffle 106 are arranged on the upper surface of the concave plate 102.

[0037] like Figures 4 to 8 As shown, in order to adjust the inclination of the first grinding wheel 310 and ensure that the burrs at any position in the groove of the tap 308 can be ground, the number of the second electromagnet 108 and the first electromagnet 107 are both provided with two, and the inclination of the first grinding wheel 310 can be controlled by controlling the two first electromagnets 107 respectively so that the lower second electromagnet 108 is at different heights, and the second electromagnet 108 and the first electromagnet 107 are relatively arranged on the left and right sides of the first grinding wheel 310, and each second electromagnet 108 is slidably arranged on the inner side of the concave plate 102.

[0038] It should be noted that the second electromagnet 108 is hinged to the left and right ends of the rotating shaft 109, so that when the two first electromagnets 107 are controlled so that the two second electromagnets 108 are not at the same height (see Figures 7 and 8 ), the rotating shaft 109 located on one side of the second electromagnet 108 will deflect, and the first grinding wheel 310 will also deflect accordingly, thereby achieving the effect of adjusting the deflection degree of the first grinding wheel 310.

[0039] In order to ensure that the grinding height of the first grinding wheel 310 can be adjusted by controlling the first electromagnet 107 through controlling the second electromagnet 108, when the first electromagnet 107 is in the working state, the second electromagnet 108 slides downward along the inner side of the concave plate 102, and the return spring is in the stretched state. In this state, the height of the first grinding wheel 310 is higher than the height in the initial state. When the burr is detected to be large, the first grinding wheel 310 in this state is used to grind it, increase the grinding distance, and strengthen the grinding intensity to achieve the effect of grinding the larger burr. When the first electromagnet 107 is in the power-off state, the second electromagnet 108 slides upward along the inner side of the concave plate 102 by the pulling force of the return spring, and the return spring returns to the initial state. In this state, the height of the first grinding wheel 310 is lower than or equal to the height in the initial state. When the burr in the groove of the tap 308 is detected to be small, the first grinding wheel 310 in this state is used to reduce the grinding distance and grinding intensity to avoid damage to the surface of the tap 308.

[0040] By detecting the state of the needle during grinding, the size data of the burr on the tap 308 is detected, and the grinding strategy of the first grinding wheel 310 is adjusted in real time. The specific steps are as follows:

[0041] When the detection needle slides upward for a long distance and the stretching amount of the spring 105 on the detection needle is higher than the preset value, it means that the burr in the groove on the tap 308 is large. At this time, it is necessary to make a preliminary adjustment to control the first electromagnet 107 to release the magnetic repulsion force on the second electromagnet 108, so that the second electromagnet 108 slides downward along the inner wall of the concave plate 102. In this process, the first grinding wheel 310 and the rotating shaft 109 both slide downward and are always consistent with the height of the second electromagnet 108, so that the grinding surface of the first grinding wheel 310 is lower than the initial height, thus shortening the grinding spacing and improving the grinding strength. At the same time, when the tap 308 passes through the second grinding wheel 311, a pressure sensor is provided on the second grinding wheel 311, and when the burr on the tap 308 is in contact with the second grinding wheel 31 1, the size of the burr is confirmed again by the pressure value here through the pressure sensor, and the position of the burr is calculated according to the distance between the second grinding wheel 311 and the first grinding wheel 310. When the tap 308 moves to the grinding area of ​​the first grinding wheel 310 through the cooperation of the electric control slide rail 309 and the sliding block 302, the first electromagnet 107 is controlled again to make the first grinding wheel 310 move downward and grind the burr contact, so as to ensure that the burr area can be accurately ground, and the normal area of ​​the tap 308 is avoided from being damaged when the first grinding wheel 310 moves downward. The downward movement time of the first grinding wheel 310 is shortened by pre-adjustment, so that after the burr on the tap 308 moves to the grinding area, the first grinding wheel 310 quickly moves downward to grind and clean it.

[0042] When the detection needle slides upward for a short distance and the stretching amount of the spring 105 on the detection needle is less than or equal to the preset value, it means that the burr in the groove on the tap 308 is small, and the first electromagnet 107 generates a magnetic attraction on the second electromagnet 108 and makes it move upward along the inner side of the concave plate 102. At this time, the return spring between the first electromagnet 107 and the second electromagnet 108 is in a compressed state, so that the height of the first grinding wheel 310 will be higher than the height of the first grinding wheel 310 in the initial state. The cooperation between the electric control slide rail 309 and the sliding block 302 makes the tap 308 move toward the inside of the angle grinder body 1 and first contact with the second grinding wheel 311. At the same time, the internal pressure sensor performs a secondary detection and judgment on the burr size according to the pressure value, and The burr position is calculated according to the distance between the first grinding wheel 310 and the tap 308. When the burr in the groove on the tap 308 moves to the grinding area, the first electromagnet 107 is controlled again to move the second electromagnet 108 upward, so that the first grinding wheel 310 will also move upward, reducing the grinding intensity, and the first electromagnet 107 is controlled to be powered off quickly, so that the reset spring will control the second electromagnet 108 to return to the initial position, and then the first electromagnet 107 is controlled again to generate a magnetic attraction to the second electromagnet 108, and control it to slide upward along the inner wall of the concave plate 102. This working mode is set to a circulation mode, so that the first grinding wheel 310 will contact and grind smaller burrs with high-frequency point contact, thereby avoiding damage to the inside of the groove of the tap 308.

[0043] like Figure 2 As shown, in order to ensure a highly stable working environment for the device during grinding work, the support assembly 2 includes a support plate 201 and a support pad 202. The number of the support pads 202 is four, and each support pad 202 is respectively located at the four corners of the bottom of the support plate 201, to ensure that the pressure generated by the device during the grinding process is evenly distributed to the inside of each support pad 202 at the bottom of the support plate 201, thereby reducing shaking or tipping. The support plate 201 is located at the bottom of the angle grinder body 1, and the upper surface of the support plate 201 is fixedly connected to the bottom of the angle grinder body 1.

[0044] like Figure 3As shown, in order to prevent the tap 308 from shaking during grinding, a fixing ring 304 is provided on the outer surface of the limiting sleeve, a telescopic member 305 is provided on one side of the fixing ring 304, and a limiting ring 307 is provided on the end of the telescopic member 305 away from the fixing ring 304. The telescopic action of the telescopic member 305 is used to control the limiting ring 307 to move along the axis of the tap 308. A clamping piece is provided on one side of the limiting ring 307. When the limiting ring 307 moves to the maximum extension, the clamping piece can be controlled to move along the surface of one side of the limiting ring 307 toward the axis. There are three clamping pieces, and each clamping piece is distributed in a circular array on one side of the limiting ring 307. At this time, the three clamping pieces are used to apply pressure to different areas of the surface of the tap 308 to form a clamping effect to prevent the tap 308 from falling off during the grinding process.

[0045] During the grinding process of the tap 308 by the first grinding wheel 310, since the initial height of the second grinding wheel 311 is consistent with that of the first grinding wheel 310, the pressure value on the contact surface between the tap 308 and the second grinding wheel 311 will change frequently. At the same time, the detection result of the detection needle is compared. When the detection needle does not detect the existence of burrs on the tap 308, it means that the tap 308 has vibrated due to the grinding process of the first grinding wheel 310. At this time, the telescopic member 305 located on the fixing ring 304 is controlled to move horizontally along the axis of the tap 308 and close to the direction of the first grinding wheel 310, so that the limit ring 307 also moves along the surface of the tap 308 with the end of the telescopic member 305. By changing the position of the limit ring 307, the fulcrum on the tap 308 is moved, and the fixing strength of the tap 308 is improved, so as to achieve the effect of reducing the vibration.

[0046] When the pressure value detected by the second grinding wheel 311 still changes frequently, it means that the vibration amplitude is large. First, the first electromagnet 107 is controlled to make the second electromagnet 108 slide upward, so that the first grinding wheel 310 moves up to prevent damage to the surface of the tap 308. Then the telescopic member 305 is controlled to move the limit ring 307 to the maximum limit of the telescopic member 305, and the three clamping pieces are controlled to move along one side of the limit ring 307 toward the axis of the tap 308, and contact and press the surface of the tap 308 to form a clamping state, and the telescopic member 305 is controlled to retract toward the direction of the fixed ring 304 again. In this process, the tap 308 is first clamped. The tap 308 is held in place by the retaining ring 304 and is quickly pulled in the direction of the fixing ring 304 to offset the force of the tap 308 shaking, so that the tap 308 will not shake for a short time. Then, the electric-controlled push rod above the pillar in the third grinding wheel 312 is controlled to control the third grinding wheel 312 to move along the concave plate 102 toward the tap 308, and make the height of the third grinding wheel 312 lower than the height of the tap 308. Then, the electric-controlled slide rail 309 and the sliding block 302 are controlled to make the end of the tap 308 away from the fixing ring 304 contact with the surface of the third grinding wheel 312 and form a lateral clamp, thereby preventing the tap 308 from shaking during grinding and causing damage to the tap 308.

[0047] It is worth noting that the second grinding wheel 311 is always in contact with the groove on the tap 308, so that the tap 308 will not be limited, and the tap 308 will be prevented from being offset during the shaking process, thereby causing damage to the tap 308. At the same time, the second grinding wheel 311 is controlled to rotate and the impurities inside the groove on the tap 308 are cleaned.

[0048] The present invention also provides a grinding method for a cutting edge chamfering grinder for a front-throwing tap, the method comprising the following steps:

[0049] S1. First, fix the tap 308 inside the limiting sleeve, then control the driving motor 301 to control the tap 308 to rotate along the axis of the end of the output shaft of the driving motor 301, so as to adjust the angle of the tap 308, and cooperate with the first grinding wheel 310 to grind the surface of the tap 308, and further control the electric control slide rail 309 to make the sliding block 302 slide along its surface, so as to adjust the position of the tap 308, so as to grind the surface of the tap 308 in different areas;

[0050] S2, when the conveying assembly conveys the tap 308 to the inside of the angle grinder body 1, the tap 308 will keep in contact with the inner side of the upper meniscus of the detection plate 104, and cooperate with the detection needle and the spring 105 to detect the size of the burr in the groove of the tap 308, and the size of the burr can be judged by the stretching amount of the spring 105 on the detection needle;

[0051] S3. Finally, the first electromagnet 107 located in the baffle 106 controls the second electromagnet 108 to slide along the inner wall of the concave plate 102 to adjust the height of the first grinding wheel 310, and adjusts the grinding height of the first grinding wheel 310 in real time according to the detection result in the detection plate 104, so as to achieve the effect of grinding and removing burrs of different sizes.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting edge chamfering grinder for a front-throwing tap, comprising an angle grinder body (1), the angle grinder body (1) comprising a housing (101), a grinding assembly (3) being provided on the inner bottom wall of the housing (101), and a supporting assembly (2) being provided on the lower surface of the housing (101), the grinding assembly (3) comprising a conveying structure, and the conveying structure being located below the grinding assembly (3), characterized in that: The grinding assembly (3) comprises a first grinding wheel (310), a second grinding wheel (311) and a third grinding wheel (312); the first grinding wheel (310) is located in the middle of the second grinding wheel (311) and the third grinding wheel (312); the second grinding wheel (311) and the third grinding wheel (312) are arranged opposite to each other inside the housing (101); a rotating shaft is provided inside the second grinding wheel (311) and the third grinding wheel (312); and a support is provided on the second grinding wheel (311) and the third grinding wheel (312) through the rotating shaft; The conveying structure located below the grinding assembly (3) comprises an electrically controlled slide rail (309) and a sliding block (302); the interior of the electrically controlled slide rail (309) is connected to the bottom of the sliding block (302) so that the sliding block (302) can slide left and right in the electrically controlled slide rail (309); a load-bearing rod (306) is provided on the upper surface of the sliding block (302); a connecting rod is provided at one end of the load-bearing rod (306) away from the sliding block (302); a support frame (303) is provided at one end of the connecting rod away from the load-bearing rod (306); a driving motor (301) is provided on one side surface of the support frame (303); a limiting sleeve is provided at the output end of the driving motor (301); a tap (308) is provided inside the limiting sleeve; A fixing ring (304) is provided on the outer surface of the limiting sleeve, a telescopic member (305) is provided on one side of the fixing ring (304), and a limiting ring (307) is provided on one end of the telescopic member (305) away from the fixing ring (304), and a clamping sheet is provided on one side of the limiting ring (307), and the number of the clamping sheets is three, and each clamping sheet is distributed in a circular array on one side of the limiting ring (307); A concave plate (102) is provided on one side of the inner wall of the housing (101), and a sliding rod (103) is provided on the side of the concave plate (102) close to the grinding assembly (3), a detection plate (104) is provided at the bottom end of the sliding rod (103), and a meniscus is provided on the side of the detection plate (104) away from the sliding rod (103), the bottom of the concave plate (102) is interconnected with the pillars on the second grinding wheel (311) and the third grinding wheel (312), the pillar on the third grinding wheel (312) is slidably connected to the concave plate (102), and an electric control push rod is provided on the top of the pillar on the third grinding wheel (312) for controlling the third grinding wheel (312) to move longitudinally along the inner side of the concave plate (102); A detection needle is provided on the side of the detection plate (104) facing the concave plate (102), the detection needle penetrates the detection plate (104) and is arranged on the inner side of the meniscus, and is used to detect the size of burrs in the groove of the tap (308) when the tap (308) moves, a spring (105) is provided on the surface of the detection needle, and the bottom end of the spring (105) is arranged on the surface of the detection plate (104); A rotating shaft (109) is provided inside the first grinding wheel (310), a second electromagnet (108) is provided at one end of the rotating shaft (109) close to the concave plate (102), a return spring is provided on the upper surface of the second electromagnet (108), and a first electromagnet (107) is provided at one end of the return spring away from the second electromagnet (108), a baffle (106) is provided on the upper surface of the first electromagnet (107), and left and right sides of the baffle (106) are arranged on the upper surface of the concave plate (102); The number of the second electromagnet (108) and the number of the first electromagnet (107) are both two, and the second electromagnet (108) and the first electromagnet (107) are both relatively arranged on the left and right sides of the first grinding wheel (310), and each second electromagnet (108) is slidably arranged on the inner side of the concave plate (102); When the first electromagnet (107) is in a working state, the second electromagnet (108) slides downward along the inner side of the concave plate (102), and the return spring is in a stretched state; When the first electromagnet (107) is in a power-off state, the second electromagnet (108) slides upward along the inner side of the concave plate (102) under the pulling force of the return spring, and the return spring returns to an initial state.

2. The cutting edge chamfering grinding machine for a front-throwing tap according to claim 1, characterized in that: The support assembly (2) comprises a support plate (201) and a support pad (202), the number of the support pads (202) being four, and each of the support pads (202) being located at four corners of the bottom of the support plate (201), the support plate (201) being located at the bottom of the angle grinder body (1), and the upper surface of the support plate (201) being fixedly connected to the bottom of the angle grinder body (1).

3. The grinding method of the cutting edge chamfering grinder for a front-throwing tap according to any one of claims 1 to 2, characterized in that: The method comprises the following steps: S1, firstly fix the tap (308) inside the limiting sleeve, then control the driving motor (301) to control the tap (308) to rotate along the axis of the end of the output shaft of the driving motor (301), so as to adjust the angle of the tap (308), and grind the surface of the tap (308) in cooperation with the first grinding wheel (310), and further control the electric control slide rail (309) to make the sliding block (302) slide along its surface, so as to adjust the position of the tap (308), so as to grind the surface of the tap (308) in different areas; S2, when the conveying assembly conveys the tap (308) to the inside of the angle grinder body (1), the tap (308) will be in continuous contact with the inner side of the upper meniscus of the detection plate (104), and the detection needle and the spring (105) cooperate with each other to detect the size of the burr in the groove of the tap (308), and the size of the burr can be judged by the stretching amount of the spring (105) on the detection needle; S3. Finally, the first electromagnet (107) located in the baffle (106) controls the second electromagnet (108) to slide along the inner wall of the concave plate (102), thereby adjusting the height of the first grinding wheel (310), and adjusting the grinding height of the first grinding wheel (310) in real time according to the detection result in the detection plate (104), thereby achieving the effect of grinding and removing burrs of different sizes.

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