A method for tapping hardware

Abstract

The invention relates to the field of hardware tapping processing, and discloses a hardware tapping method, comprising the following steps: S1, chamfering processing; S2, workpiece clamping; S3, tapping operation; wherein S3 adopts a tapping device, the tapping device comprises a tapping machine and a processing table fixed on the upper limit hardware of the tapping machine, the external fixed cover of the processing table is provided with a protective air guide cover, a support frame is fixed on the protective air guide cover, a drainage cover is rotatably installed on the support frame, and a transmission component for controlling the reciprocating rotation of the drainage cover is also installed on the support frame; an upper nozzle for vertically spraying lubricating coolant is fixedly installed above the drainage cover, and a lower nozzle for obliquely spraying lubricating coolant is fixedly installed below the drainage cover; the hardware tapping device is provided with a structure for fully contacting the auxiliary lubricating coolant with the tap, so as to avoid serious thermal damage and wear of the tap during the feeding and tapping process.

Description

Technical Field

[0001] The invention relates to the field of hardware tapping processing, in particular to a hardware tapping method. Background Art

[0002] Hardware can be tapped to create threaded holes using a certain type of tap. The pitch, lead and nominal diameter of the thread are important parameters in the tapping process. These parameters are crucial to ensuring the quality and applicability of the thread. However, some existing tapping machines are not convenient for effectively collecting and managing cooling water during processing. The cooling water flows freely on the processing table or forms water accumulation, which is not conducive to the subsequent tapping of the workpiece.

[0003] To this end, a hardware tapping device with patent publication number CN209175050U includes a box body, the middle position of the upper surface of the box body is concave downward with an annular groove, a mounting ring is arranged in the annular groove, a driving ring is fixedly welded on the upper surface of the mounting ring, a mounting hole is arranged on the mounting ring, and teeth are arranged on the inner side of the driving ring. A first motor is installed inside the box body, and the end of the rotating shaft of the first motor extends out of the upper surface of the box body and is fixedly connected with a gear, and the gear is meshed with the teeth. The utility model drives the driving ring to rotate through the gear on the first motor and then rotates the mounting ring, so that the workpiece in the mounting hole on the left side of the mounting ring does not delay the placement of the workpiece into the mounting hole on the right side of the mounting ring during the tapping process, which greatly improves the work efficiency, and the cooling water in the processing process flows from the through hole at the bottom of the mounting hole into the annular groove and then passes through the second water pipe to return the cooling water to the water tank, ensuring the cleanliness of the work surface.

[0004] Some existing tapping machines usually spray lubricating and cooling water directly onto the working taps. However, due to the influence of the rotation of the taps and the size of the holes opened on the processed hardware, the amount of lubricating and cooling liquid that enters the holes is limited. The taps cannot be fully lubricated and cooled during feeding, resulting in a high temperature in the processing area, which will cause thermal damage to the taps and hardware, and will also increase the wear of the taps. In addition, after the taps are processed, the surface of the taps will remain with the sprayed lubricating and cooling liquid and waste chips produced by tapping. Failure to clean the taps in time will affect the subsequent hardware processing quality and the processing accuracy of the taps during subsequent tapping operations. Summary of the invention

[0005] In view of the above problems, a method for tapping hardware is provided, in which lubricating coolant is sprayed by upper and lower combined nozzles, and the lubricating coolant on the surface of the workpiece is accelerated by wind to flow into the hole opened by tapping. This solves the problem that the amount of lubricating coolant entering the opened hole is limited due to the influence of tap rotation and the size of the hole opened on the processing hardware, and the tap feed processing cannot obtain sufficient lubrication and cooling, resulting in a high temperature in the processing area, which will cause thermal damage to the tap and hardware, and will also aggravate the wear of the tap during use.

[0006] In order to solve the problems of the prior art, the present invention provides a method for tapping hardware, comprising the following steps: S1, chamfering, chamfering the hole mouth of the threaded hole to be opened in the hardware; S2, workpiece clamping, placing the hardware on the tapping equipment, and confining the hardware on the tapping equipment by clamping tooling; S3, tapping operation, controlling the tap on the tapping equipment to move downward and rotate, inserting the rotating tap into the threaded hole opened on the hardware, controlling the feeding and withdrawal of the tap, spraying lubricating coolant on the tap to assist in completing the tapping operation; wherein S 3 uses a tapping device, which includes a tapping machine and a processing table fixed on the upper limit hardware of the tapping machine, the external fixed cover of the processing table is provided with a protective air guide cover, a support frame is fixed on the protective air guide cover, a guide cover is rotatably mounted on the support frame, and a transmission assembly for controlling the reciprocating rotation of the guide cover is also mounted on the support frame; an upper nozzle for vertically spraying lubricating coolant is fixedly mounted above the guide cover, and a lower nozzle for obliquely spraying lubricating coolant is fixedly mounted below the guide cover; a fan blade for accelerating the flow of lubricating coolant on the processing table is rotatably mounted in the protective air guide cover.

[0007] Preferably, the transmission assembly includes a slide rod fixed on the outside of the drainage cover, a slide frame is slidably mounted on the slide rod, a slider is fixedly mounted on the slide frame, the slider is snap-fitted and slidably mounted on the support frame, and the slide rod corresponds to the top of the support frame.

[0008] Preferably, a rack is fixedly mounted on the tapping machine, and a large flat gear and a small flat gear are rotatably mounted on the protective air duct, one side of the large flat gear is meshed with the small flat gear, and the other side of the large flat gear is meshed with the rack.

[0009] Preferably, the planar pinion and the fan blade are connected to each other via a pulley transmission assembly.

[0010] Preferably, a speed change assembly is installed on the protective air deflector to drive the sliding frame connected to the supporting frame to slide back and forth.

[0011] Preferably, the speed change assembly includes a disc rotatably mounted on the protective air shroud, a sliding column is fixed eccentrically on the disc, the sliding column and the sliding frame are slidably assembled in a snap-fitting manner, a small-diameter bevel gear is fixedly mounted under the disc, a large-diameter bevel gear is meshingly connected to the side of the small-diameter bevel gear, and the large-diameter bevel gear is fixedly mounted on the flat pinion.

[0012] Preferably, two groups of cleaning nozzles are symmetrically mounted on the drainage cover, a conduction channel is rotatably mounted on the drainage cover, a roller is rotatably mounted on the conduction channel, and the conduction channel corresponds to the bottom of the cleaning nozzle.

[0013] Preferably, a cleaning liquid storage tank and a lubricating liquid storage tank are respectively installed on the left and right sides of the protective air deflector. The cleaning liquid storage tank is connected to the cleaning nozzle through a hose, and the lubricating liquid storage tank is connected to the upper nozzle and the lower nozzle through a hose.

[0014] Preferably, the roller is installed at the lower end position of the conducting channel, and a certain distance is maintained between the bottom of the roller and the bottom surface of the end of the conducting channel.

[0015] Preferably, a cylinder is fixedly mounted on the drainage cover, a positioning block is fixedly mounted on the lifting end of the cylinder, a push rod is rotatably mounted on the positioning block, and the push rod is rotatably mounted on the outside of the cleaning nozzle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with two groups of upper and lower nozzles for spraying lubricating coolant. The lower nozzle obliquely sprays lubricating coolant directly onto the surface of the tap, and the lubricating coolant sprayed by the upper nozzle enters the drainage cover. The drainage cover can be controlled to reciprocate through transmission components such as a slide frame and a slide rod. The reciprocating rotation of the drainage cover can make the lubricating coolant inside evenly distributed on the outside of the tap. The coolant uniformly guided downward in the drainage cover is distributed on the outside of the threaded hole of the hardware. Under the action of the wind force of the fan, this part of the coolant is accelerated to flow on the surface of the hardware, and the flowing coolant enters the threaded hole opened by the tapping of the hardware, so that the tap is fully in contact with the lubricating coolant, thereby reducing the heat loss and wear during the tapping process;

[0018] During the downward movement of the tap driver of the tapping machine, the external fixed rack is driven to move downward synchronously, and the plane pinion can be controlled to accelerate the rotation through the meshing transmission structure. The plane pinion drives the fan blade to rotate through the pulley transmission assembly, so that during the downward movement of the tap, the fan blade is driven autonomously to accelerate the flow of lubricating coolant into the threaded hole opened by the tapping;

[0019] The flat pinion rotates, and the disc is accelerated to rotate through the meshing transmission of the large-diameter bevel gear and the small-diameter bevel gear. The disc controls the sliding rod to engage with the support frame and move back and forth through the sliding structure of the sliding column and the sliding rod. The sliding assembly structure of the sliding rod and the sliding rod controls the left and right reciprocating rotation of the drainage cover installed on the support frame, so that the lubricating coolant flowing in the drainage cover can be evenly distributed on the outside of the threaded hole opened by tapping.

[0020] 2. The present invention is provided with a tap cleaning structure, the operating cylinder pushes the positioning block to move, the push rod on the side of the positioning block rotates to control the conduction channel to rotate and expand, so that the conduction channel rotates corresponding to the outside of the tap, the roller at the end of the conduction channel fits the outside of the tap, and the drainage cover drives the two groups of conduction channels symmetrically arranged inside to reciprocate synchronously when reciprocating, the conduction channel guides the cleaning liquid sprayed by the cleaning nozzle to correspond to the tap, and when the conduction channel rotates, the roller rubs against the surface of the tap to clean up the residual processing waste on the tap, the automatic sliding cleaning method is easy to operate, and can keep the surface of the tap clean for subsequent tapping of hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the three-dimensional structure of a tapping machine for a method of tapping hardware.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a rack of a hardware tapping method.

[0023] Figure 3 The present invention is a schematic diagram of the three-dimensional structure of a protective air deflector of a hardware tapping method.

[0024] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of a drainage hood of a hardware tapping method.

[0025] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a slide bar in a hardware tapping method.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the upper nozzle and the lower nozzle of a hardware tapping method;.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the conduction channel of a hardware tapping method.

[0028] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a drum in a hardware tapping method.

[0029] Fig. 9 The present invention is a schematic diagram of the three-dimensional structure of a slide frame of a hardware tapping method.

[0030] Fig.10The present invention is a schematic diagram of the three-dimensional structure of a fan blade using a hardware tapping method.

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of a disc for a hardware tapping method.

[0032] The numbers in the figure are:

[0033] 1. Tapping machine; 2. Processing table; 3. Protective guide cover; 31. Lubricating liquid storage box; 32. Cleaning liquid storage box; 33. Hose; 4. Support frame; 5. Drainage cover; 51. Upper nozzle; 52. Lower nozzle; 53. Cleaning nozzle; 54. Conducting channel; 55. Roller; 56. Cylinder; 57. Positioning block; 58. Push rod; 6. Fan blade; 71. Slide bar; 72. Slide frame; 73. Sliding block; 74. Rack; 75. Large flat gear; 76. Small flat gear; 77. Pulley drive assembly; 78. Disc; 79. Sliding column; 710. Small tooth diameter bevel gear; 711. Large tooth diameter bevel gear. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] See also Figure 1-Figure 3 , Figure 6 As shown, a method for tapping hardware includes the following steps: S1, chamfering, chamfering the hole mouth of the threaded hole to be opened in the hardware; S2, workpiece clamping, placing the hardware on the tapping equipment, and confining the hardware on the tapping equipment by clamping tooling; S3, tapping operation, controlling the tap on the tapping equipment to move downward and rotate, inserting the rotating tap into the threaded hole opened on the hardware, controlling the feeding and withdrawal of the tap, spraying lubricating coolant on the tap to assist in completing the tapping operation; wherein S3 uses a tapping device, the tapping device includes a tapping machine 1 and a processing table 2 fixed on the tapping machine 1 to limit the hardware, and the external fixed cover of the processing table 2 is provided with a protective guide A flow hood 3, a support frame 4 is fixed on the protective flow guide hood 3, a flow guide hood 5 is rotatably installed on the support frame 4, and a transmission component for controlling the reciprocating rotation of the flow guide hood 5 is also installed on the support frame 4; an upper nozzle 51 for vertically spraying lubricating coolant is fixedly installed above the flow guide hood 5, and a lower nozzle 52 for obliquely spraying lubricating coolant is fixedly installed below the flow guide hood 5; the flow guide hood 5 is a funnel-shaped structure, which can guide the liquid on the inner wall to flow downward in a concentrated manner; a fan blade 6 for accelerating the flow of lubricating coolant on the processing table 2 is rotatably installed in the protective flow guide hood 3, and two groups of fan blades 6 are arranged in the protective flow guide hood 3, and the two groups of fan blades 6 correspond to the sides of the processing table 2, and the wind force acts on the hardware clamped and fixed on the processing table 2.

[0036] The hardware is clamped and limited on the processing table 2, and the tap on the tapping machine 1 is controlled to move downward and rotate, so that the tap enters the hole of the hardware to complete the tapping of the hardware. During the tap feeding and tapping process, the lubricating coolant is sprayed through the upper nozzle 51 and the lower nozzle 52. The lower nozzle 52 is tilted to spray the lubricating coolant directly onto the tap. However, due to the high-speed rotation of the tap, part of the coolant contacts the tap and splashes outward to the hardware and the processing table 2. The upper nozzle 51 sprays the lubricating coolant onto the inner wall of the drainage cover 5, and the transmission The dynamic component controls the drainage cover 5 installed on the support frame 4 to reciprocate left and right. The reciprocating drainage cover 5 can drain the lubricating coolant flowing in the inner wall downward more evenly, and the drained lubricating coolant is distributed outside the threaded hole opened by tapping the hardware. The rotation of the fan blade 6 can accelerate the flow of lubricating coolant on the surface of the hardware, so that the lubricating coolant on the side of the threaded hole flows into the threaded hole opened by tapping, so that the lubricating coolant is in full contact with the outside of the tap, avoiding greater thermal damage and wear of the tap during the tapping process.

[0037] See also Figure 4-Figure 6 As shown, the transmission assembly includes a slide bar 71 fixed to the outside of the drainage cover 5, a slide frame 72 is slidably installed on the slide bar 71, a slider 73 is fixedly installed on the slider 72, the slider 73 is slidably installed on the support frame 4, the slide bar 71 corresponds to the upper part of the support frame 4, and a slide groove is provided on the slide frame 72. The sliding assembly on the slide bar 71 is engaged and slides in the slide groove on the slide frame 72 to realize the sliding assembly between the slide frame 72 and the slide bar 71.

[0038] The control slide frame 72 is engaged with the support frame 4 through the slider 73 to slide back and forth. When the slide frame 72 moves back and forth, the slide bar 71 is engaged in the slide frame 72 and slides accordingly. The slide frame 72 pushes the drainage cover 5 installed in the support frame 4 to reciprocate left and right through the sliding slide bar 71, thereby driving the drainage cover 5 to rotate reciprocatingly.

[0039] See also Figure 2 , Figure 9-10 As shown, a rack 74 is fixedly installed on the tapping machine 1, and a flat large gear 75 and a flat small gear 76 are rotatably installed on the protective air duct 3. One side of the flat large gear 75 is meshed with the flat small gear 76, and the other side of the flat large gear 75 is meshed with the rack 74. The structure on the tapping machine 1 that drives the tap to rotate is fixedly assembled with the rack 74, and the lifting structure on the tapping machine 1 controls the tap driving structure to move up and down, and controls the tap and the rack 74 to move up and down synchronously.

[0040] In the process of controlling the tap to move downward, the tapping machine 1 drives the rack 74 to move downward synchronously. The meshing transmission structure between the rack 74 and the large flat gear 75 can drive the large flat gear 75 to rotate. The large flat gear 75 drives the small flat gear 76 on the side to accelerate rotation through the meshing action, thereby achieving the process of driving the small flat gear 76 to accelerate rotation when the tapping machine 1 drives the tap to move up and down.

[0041] See also Fig.10 As shown, the flat pinion 76 and the fan blade 6 are interconnected through a pulley transmission assembly 77. The belt transmission assembly 77 consists of three sets of triangular corresponding transmission wheels and belts connected to the outside of the three sets of transmission wheels. The bottom set of transmission wheels and the flat pinion 76 are fixedly transmitted to each other, and the upper two sets of transmission wheels are fixedly transmitted to the two sets of fan blades 6 respectively.

[0042] When the flat pinion 76 accelerates to rotate, the two sets of fan blades 6 are driven to rotate through the pulley transmission assembly 77. When the fan blades 6 rotate, the wind is blown to the hardware clamped on the processing table 2, accelerating the flow of lubricating coolant on the side of the tapped holes on the hardware, so that the lubricating coolant on the hardware can flow into the threaded holes opened by tapping.

[0043] See also Figure 10-11 As shown, a speed change assembly is installed on the protective air guide 3 for driving the slide frame 72 connected to the support frame 4 to slide back and forth. There is a certain distance between the inner wall of the protective air guide 3 and the processing table 2, so that the lubricating coolant and cleaning liquid generated by the tapping processing on the processing table 2 can flow into the protective air guide 3. The protective air guide 3 guides the internal liquid to be discharged from the water outlet below. A corresponding collection tank is placed at the water outlet below the protective air guide 3 to collect and process the waste liquid generated by the processing.

[0044] When the flat pinion 76 accelerates, the speed change transmission assembly can drive the slide frame 72 to move horizontally, so that when the tapping machine 1 controls the tap to move up and down, the fan blade 6 and the slide frame 72 are driven at the same time, which assists in evenly spraying lubricating coolant during the tapping process and can also assist in the subsequent cleaning of the tap surface.

[0045] See also Figure 10-11 As shown, the speed change assembly includes a disc 78 rotatably mounted on the protective air deflector 3, a sliding post 79 is fixed eccentrically on the disc 78, the sliding post 79 is engaged and slidably assembled with the slide frame 72, a small-diameter bevel gear 710 is fixedly mounted below the disc 78, a large-diameter bevel gear 711 is meshedly connected to the side of the small-diameter bevel gear 710, and the large-diameter bevel gear 711 is fixedly mounted on the flat pinion 76, a slide groove is provided below the slide frame 72, and the sliding post 79 is engaged and slidably mounted in the slide groove provided below the slide frame 72.

[0046] The rotation of the flat pinion 76 drives the externally fixed large-diameter bevel gear 711 to rotate synchronously. The large-diameter bevel gear 711 synchronously engages with the transmission structure to drive the small-diameter bevel gear 710 on the side to rotate faster. The small-diameter bevel gear 710 drives the upper disk 78 to rotate synchronously. When the disk 78 rotates, it pushes the slide post 79 to engage in the slide frame 72 and slide accordingly. It can push the slide frame 72 to engage in the support frame 4 and slide back and forth, thereby realizing the function of accelerating the drive of the slide frame 72.

[0047] See also Figure 6-Figure 8 As shown, two groups of cleaning nozzles 53 are symmetrically installed on the drainage hood 5, a conduction channel 54 is rotatably installed on the drainage hood 5, and a roller 55 is rotatably installed on the conduction channel 54. The conduction channel 54 corresponds to the bottom of the cleaning nozzle 53. The two groups of cleaning nozzles 53 are installed on the left and right sides of the upper end of the drainage hood 5, the upper nozzle 51 is installed at the rear position of the upper end of the drainage hood 5, and the lower nozzle 52 is installed at the rear position of the lower end of the drainage hood 5. The upper nozzle 51 and the lower nozzle 52 are correspondingly distributed up and down.

[0048] When the tap exits the hardware and moves upward, the cleaning liquid is sprayed into the conducting channel 54 through the cleaning nozzle 53. The conducting channel 54 rotates corresponding to the side of the tap, and the roller 55 below the conducting channel 54 is pressed against the outside of the tap. In the process of the tap moving upward, the cleaning liquid guided in the conducting channel 54 flows to the surface of the tap, and the reciprocating rotation of the drainage cover 5 drives the two groups of conducting channels 54 inside to rotate synchronously. The conducting channel 54 evenly transmits the cleaning liquid to the outside of the tap, and the roller 55 reciprocates and fully contacts the outside of the tap to clean up the lubricating coolant and tapping waste chips remaining on the outside of the tap.

[0049] See also Figure 3 As shown, a cleaning liquid storage tank 32 and a lubricating liquid storage tank 31 are respectively installed on the left and right sides of the protective deflector 3. The cleaning liquid storage tank 32 is connected to the cleaning nozzle 53 through a hose 33, and the lubricating liquid storage tank 31 is connected to the upper nozzle 51 and the lower nozzle 52 through a hose 33. Pumps are installed in the cleaning liquid storage tank 32 and the lubricating liquid storage tank 31 to transmit the liquid stored inside. The pressure water delivery end of the pump body is connected to the hose 33, and the liquid can be controlled to be transmitted to the upper nozzle 51, the lower nozzle 52 and the cleaning nozzle 53 through the hose 33 at high pressure.

[0050] When the tap is feeding and tapping, the lubricating coolant in the lubricating coolant storage tank 31 is controlled to enter the upper nozzle 51 and the lower nozzle 52 through the hose 33, and the lubricating coolant is transmitted to the tap in the tapping operation through the nozzle. When the tap is moved and separated from the hardware, the cleaning liquid in the cleaning liquid storage tank 32 is controlled to enter the cleaning nozzle 53 through the hose 33, and the cleaning nozzle 53 transmits the cleaning liquid to the surface of the tap, so as to clean the lubricating coolant and tapping waste on the surface of the tap.

[0051] See also Figure 8 As shown, the roller 55 is installed at the lower end position of the conducting channel 54 , and a certain distance is maintained between the bottom of the roller 55 and the bottom surface of the end of the conducting channel 54 .

[0052] The contact between the roller 55 and the tap surface can clean the lubricating coolant and tapping waste chips remaining on the tap surface. The cleaning liquid transmitted in the conduction channel 54 is partially transmitted to the roller 55, and partially flows directly to the outside of the tap through the gap between the roller 55, thereby better cleaning the tap surface.

[0053] See also Figure 6-Figure 7 As shown, a cylinder 56 is fixedly installed on the drainage hood 5, a positioning block 57 is fixedly installed on the lifting end of the cylinder 56, a push rod 58 is rotatably installed on the positioning block 57, and the push rod 58 is rotatably installed on the outside of the cleaning nozzle 53. The cylinder 56 is connected to the control module on the tapping machine 1 through a wireless module, and the cylinder 56 can be driven to start through the control panel on the tapping machine 1. The push rod 58 and the rotating shaft end of the cleaning nozzle 53 are fixed to each other.

[0054] The operating cylinder 56 pushes the positioning block 57 to move up and down, and the two ends of the push rod 58 connected to the side of the positioning block 57 rotate accordingly. The rotating push rod 58 pushes the conduction channel 54 to rotate in the drainage cover 5 accordingly. When the tap is in the feeding state, the conduction channel 54 is controlled to rotate and be stored on the side of the inner wall of the drainage cover 5. When the tap is in the exiting state, the conduction channel 54 is controlled to rotate corresponding to the side of the tap, so as to clean the tap.

[0055] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A method for tapping hardware, characterized in that: The following steps are involved: S1. Chamfering: Chamfering the opening of the threaded hole to be opened in the hardware; S2, workpiece clamping, placing the hardware on the tapping equipment, and confining the hardware on the tapping equipment through clamping tooling; S3, tapping operation, controlling the tap on the tapping equipment to move downward and rotate, inserting the rotating tap into the threaded hole opened on the hardware, controlling the tap to feed and withdraw, spraying lubricating coolant on the tap to assist in completing the tapping operation; S3 uses a tapping device, which comprises a tapping machine (1) and a processing table (2) fixed to an upper limit hardware of the tapping machine (1); the processing table (2) is provided with a protective air guide cover (3) on an external fixed cover, a support frame (4) is fixed on the protective air guide cover (3), a air guide cover (5) is rotatably mounted on the support frame (4), and a transmission component for controlling the reciprocating rotation of the air guide cover (5) is also mounted on the support frame (4); An upper nozzle (51) for vertically spraying the lubricating coolant is fixedly mounted above the drainage cover (5), and a lower nozzle (52) for obliquely spraying the lubricating coolant is fixedly mounted below the drainage cover (5); The protective air guide cover (3) is rotatably mounted with a fan blade (6) for accelerating the flow of lubricating coolant on the processing table (2); The transmission assembly comprises a slide bar (71) fixed to the outside of the drainage cover (5), a slide frame (72) is slidably mounted on the slide bar (71), a slide block (73) is fixedly mounted on the slide frame (72), the slide block (73) is snap-fitted and slidably mounted on the support frame (4), and the slide bar (71) corresponds to the upper side of the support frame (4); The protective air deflector (3) is provided with a speed change assembly for driving the sliding frame (72) connected to the support frame (4) to slide back and forth; The speed change assembly comprises a disc (78) rotatably mounted on the protective air deflector (3); a sliding post (79) is fixed eccentrically on the disc (78); the sliding post (79) and the slide frame (72) are slidably engaged with each other; a small-diameter bevel gear (710) is fixedly mounted below the disc (78); a large-diameter bevel gear (711) is meshingly connected to the side of the small-diameter bevel gear (710); and the large-diameter bevel gear (711) is fixedly mounted on the flat pinion (76).

2. A method for tapping hardware according to claim 1, characterized in that: A rack (74) is fixedly mounted on the tapping machine (1), and a planar large gear (75) and a planar small gear (76) are rotatably mounted on the protective air guide cover (3); one side of the planar large gear (75) is meshedly connected to the planar small gear (76), and the other side of the planar large gear (75) is meshedly connected to the rack (74).

3. A hardware tapping method according to claim 2, characterized in that: The flat pinion (76) and the fan blade (6) are connected to each other via a belt pulley transmission assembly (77).

4. A hardware tapping method according to claim 1, characterized in that: Two groups of cleaning nozzles (53) are symmetrically mounted on the drainage cover (5), a conduction channel (54) is rotatably mounted on the drainage cover (5), a roller (55) is rotatably mounted on the conduction channel (54), and the conduction channel (54) corresponds to the lower side of the cleaning nozzles (53).

5. A hardware tapping method according to claim 4, characterized in that: A cleaning liquid storage box (32) and a lubricating liquid storage box (31) are respectively installed on the outside of the left and right sides of the protective air deflector (3); the cleaning liquid storage box (32) is connected to the cleaning nozzle (53) via a hose (33); and the lubricating liquid storage box (31) is connected to the upper nozzle (51) and the lower nozzle (52) via a hose (33).

6. A method for tapping hardware according to claim 4, characterized in that: The roller (55) is installed at the lower end position of the conducting channel (54), and a certain distance is maintained between the bottom of the roller (55) and the bottom surface of the end of the conducting channel (54).

7. A method for tapping hardware according to claim 4, characterized in that: A cylinder (56) is fixedly mounted on the drainage cover (5), a positioning block (57) is fixedly mounted on the lifting end of the cylinder (56), a push rod (58) is rotatably mounted on the positioning block (57), and the push rod (58) is rotatably mounted on the outside of the cleaning nozzle (53).

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