Tapping clamp for nut machining and clamping method of tapping clamp

Abstract

The invention belongs to the technical field of nut machining, and discloses a tapping clamp for nut machining and a clamping method thereof.The tapping clamp comprises a base, a clamping disc clamping mechanism and a limiting supporting mechanism, a lubricating oil spraying mechanism is arranged at the top of the limiting supporting mechanism, and a rotation processing part is rotationally arranged at the top of the base; and the top of the rotary processing part is fixedly connected with the clamping disc. After tapping treatment is completed in the nut clamping stage, the nut clamped in the clamping disc is deflected to the position above the positioning and collecting part, the deflected adjusting type supporting assembly is used for automatically contracting and hiding, supporting on the tapped nut is relieved, the nut automatically falls down and is connected into the positioning and collecting part in a sleeved mode, and therefore the nut clamping stage is completed. And on one hand, the situation that the nuts are blocked and difficult to separate is avoided through a bottom extraction mode, on the other hand, centralized collection and stacking are achieved, the nuts are prevented from falling off randomly, and the comprehensive use effect is good.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of nut machining, and particularly relates to a tapping clamp for nut machining and a clamping method thereof. BACKGROUND

[0002] Nut tapping is a machining process of cutting or extruding threads in the inner hole of a nut by a tap, to ensure that a bolt can be smoothly screwed in for fastening. For stable processing of nut tapping, a clamp is usually used for clamping, a nut blank is fixed, and a device is ensured to maintain a stable position during tapping.

[0003] In the prior art, the tapping clamp for nut machining usually adopts a clamping disc mode in the use process, is matched with a plurality of clamping grooves on the clamping disc, continuously automatically feeds and taps in the rotating process, and performs stripping processing on the tapped nut. However, the stripping of the clamped and machined nut currently needs to be matched with external water flow or air flow sweeping, on the one hand, the nut is blocked and cannot be stripped, and on the other hand, the dispersed solid particles and impurities have high dispersion intensity under the action of water flow and air flow. For the dispersed solid particles and impurities, the subsequent cleaning difficulty is increased. When the clamped nut is stripped in the actual clamp, the nut randomly falls, the subsequent collection and transfer difficulty is increased, and the comprehensive use effect is poor. SUMMARY

[0004] The application aims to provide a tapping clamp for nut machining and a clamping method thereof, to solve the problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the application provides the following technical scheme: a tapping clamp for nut machining and a clamping method thereof, comprising a base, a clamping disc clamping mechanism and a limiting support mechanism, the limiting support mechanism is provided with a sliding oil spraying mechanism at the top, the top of the base is rotationally provided with a rotating processing portion, the top of the rotating processing portion is fixedly connected with the clamping disc, a plurality of clamping grooves are equidistantly formed on the outer side surface of the clamping disc, an adjustable support assembly is elastically connected in the clamping disc, a vacuum suction portion is fixedly arranged at the top of the base, the suction end of the vacuum suction portion is movably sleeved at the bottom of the clamping disc, a positioning and collecting portion is arranged at the top of the base, the positioning and collecting portion is located below the clamping groove and corresponds to the position of the vacuum suction portion, a switching portion is rotationally arranged at the top of the base, the switching portion supports the positioning and collecting portion positioned at the top, a positioning mechanism is arranged below the switching portion, the positioning mechanism positions the switching portion, When the adjustable support assembly is rotated to above the suction end of the vacuum suction portion, the vacuum suction portion controls the corresponding adjustable support assembly to shrink and move along the inside of the clamping disc.

[0006] Preferably, the inside of the clamping disc is provided with an assembly chamber, the assembly chamber comprises an adaptive sleeve, a sleeve cavity and a through hole, the adaptive sleeve, the sleeve cavity and the through hole are all arranged in the inside of the clamping disc, and the adaptive sleeve, the sleeve cavity and the through hole are communicated at one time, the adaptive sleeve is communicated with the clamping groove, the assembly chamber is one-to-one corresponding to the adjustable supporting assembly, the adjustable supporting assembly is one-to-one corresponding to the clamping groove, the adjustable supporting assembly is sleeved in the assembly chamber, the adjustable supporting assembly comprises a supporting plate, an adaptive hole, a push plate and a spring, the adaptive hole is arranged on the front surface of the supporting plate, the supporting plate is sleeved and connected in the clamping groove in a sliding mode, one end of the push plate is fixedly connected with the supporting plate, and the other end of the push plate is fixedly connected with the spring, and the inner end of the spring is fixedly connected in the sleeve cavity.

[0007] Preferably, the rotating processing part comprises a rotating shaft, a gear one, a motor and a gear two, one end of the rotating shaft is rotatably arranged in the inside of the base through a bearing, and the other end of the rotating shaft is fixedly sleeved in the clamping disc, the gear one is fixedly sleeved on the outer surface of the rotating shaft, the motor is fixed on the top of the base, and the gear two is fixedly sleeved on the output shaft of the motor and is engagedly connected with the gear one.

[0008] Preferably, the vacuum suction part comprises a vacuum pump, an annular plate and a communication hole, the bottom of the clamping disc is provided with an annular groove one, the annular groove one is communicated with the through hole, the annular plate is rotatably sleeved in the annular groove one, the communication hole is arranged in the annular plate, the suction end of the vacuum pump is fixedly arranged at the bottom of the annular plate, and the suction end of the vacuum pump is communicated with the communication hole, the communication hole is located on the rotating path of the through hole, and the vacuum pump is fixedly arranged on the top of the base through the bottom supporting table.

[0009] Preferably, the positioning and collecting part comprises a sleeve shaft and a supporting ring, the supporting ring is fixedly sleeved at the bottom of the outer surface of the sleeve shaft, the diameter of the sleeve shaft is smaller than that of the inner hole of the nut, and the positioning and collecting part is located on the rotating path of the adaptive hole.

[0010] Preferably, the switching part comprises a rotating ring and a supporting plate, the top of the base is provided with an annular groove two, the rotating ring is rotatably sleeved in the annular groove two, the supporting plate is distributed on the outer side surface of the rotating ring in a surrounding mode, and the top of the supporting plate is provided with a positioning groove matched with the supporting ring.

[0011] Preferably, the positioning mechanism is a fixed magnetic attraction mechanism, the fixed magnetic attraction mechanism comprises a magnetic block one and a magnetic block two, the magnetic block two is fixedly nested at the bottom of the supporting plate, and the magnetic block one is fixedly nested at the top of the base, and the position of the switching part is positioned through the magnetic attraction of the magnetic block one and the magnetic block two.

[0012] Preferably, the positioning mechanism is a movable magnetic attraction mechanism, which comprises an electromagnet, a magnetic plate, a spring two and a striking block, the electromagnet is fixedly nested on the top of the base, the magnetic plate is movably sleeved in the stepped hole at the bottom of the supporting plate, the magnetic plate is elastically connected in the stepped hole through the top-fixed spring two, the striking block is fixed on the top of the magnetic plate, the position of the switching part is positioned through the magnetic attraction of the electromagnet and the magnetic plate, the supporting ring is provided with a lubricating oil storage part, the movable magnetic attraction mechanism separates the lubricating oil on the surface of the nut through the lubricating oil storage part, the lubricating oil storage part comprises a top groove, a storage cavity and a filter hole, the storage cavity is opened in the inside of the supporting ring, the top groove is opened in the top of the supporting ring, and the filter hole is opened in the top of the supporting ring, and the filter hole is communicated with the top groove and the storage cavity at two ends.

[0013] Preferably, the clamping mechanism comprises an adaptive clamping plate, an electric push rod and a support, the support is fixed on the outside of the base, the electric push rod is fixed in the support, and the movable end of the electric push rod is fixedly connected with the adaptive clamping plate, the front end of the adaptive clamping plate is matched with the outside of the nut, the limiting support mechanism is fixed on the outside of the base, and the limiting support mechanism comprises an arc-shaped stop ring, the arc-shaped stop ring is located on the outside of the clamping disc, and a recess for the movement of the adaptive clamping plate is reserved on the arc-shaped stop ring.

[0014] A clamping method of a tapping clamp for nut machining, comprising the following clamping steps: First step: the nut blank to be clamped and tapped is placed in the feeding frame on one side of the clamp, the rotating treatment part is started, the clamping disc is driven to deflect by a fixed deflection angle, and a group of clamping grooves on the outside of the clamping disc is correspondingly distributed at the end of the outside feeding frame; Second step: the nut blank in the feeding frame is pushed by the pushing part in the feeding frame, and a group of nut blanks are slid into the corresponding clamping grooves and stably fall on the top of the adjustable support assembly; Third step: the rotating treatment part is rotated to deflect by a fixed angle again, so that the nut blank in the clamping groove is deflected to the inside of the limiting support mechanism, and after deflection again, the nut blank is deflected to the lower part of the tapping end, and the clamping groove is correspondingly positioned with the outside clamping mechanism, and the nut is clamped in the inner wall of the clamping groove from the outside by the action of the clamping mechanism, and the tapping end moves downward, and the tapping treatment is performed on the clamped nut; Fourth step: after tapping is completed, the tapping end is reset by moving upward, the clamping mechanism is reset synchronously, the rotating treatment part drives the clamping disc to deflect again, and the tapped nut is located above a group of positioning collection parts after deflection, and at this time, the vacuum suction part is started to suck the air in the corresponding area of the clamping disc, so that the local negative pressure drives the adjustable support assembly at the corresponding position to move inwards along the clamping disc. Fifth step: when the bottom adjusting support assembly supporting the nut after tapping is retracted, the nut loses support and falls down, and is automatically sleeved on the positioning collecting part, completing automatic positioning and stacking after clamping processing, and with the clamping disc deflected again, the retracted adjusting support assembly in the clamping disc resets and scrapes off the top residue, and when deflected to the feeding frame, the next round of clamping processing of the clamping groove is carried out.

[0015] The beneficial effects of the present application are as follows: (1) The present application uses a clamping disc, an adjusting support assembly, an assembly chamber, a vacuum suction part and a positioning collecting part to complete tapping after clamping in the nut clamping stage, and with the nut clamped in the clamping disc deflected above the positioning collecting part, the deflected adjusting support assembly is automatically retracted and hidden, the support for the tapped nut is removed, and the nut automatically falls and is sleeved in the positioning collecting part, completing automatic stacking and collecting after tapping and clamping. On the one hand, the bottom extraction method avoids nut jamming and separation, and on the other hand, it realizes centralized collection and stacking, avoids random nut falling, and has good comprehensive use effect.

[0016] (2) The present application uses a clamping disc, an adjusting support assembly, an assembly chamber and a vacuum suction part to realize the retraction movement of the adjusting support assembly, and cooperates with the elastic reset of the subsequent adjusting support assembly to slide back and forth twice, so that the top surface of the support plate is rubbed and cleaned relative to the clamping disc, the top surface of the support plate is self-cleaned, impurities and attachments are removed, the subsequent nut support is stable, and particles that cause the nut to be placed unevenly are avoided. At the same time, the existing air blowing method for discharging is avoided, so that particles are not scattered.

[0017] (3) The present application uses a sliding oil storage part in the positioning collecting part, cooperates with the stacking effect of the positioning collecting part, and after automatic stacking and sleeving after clamping processing, the sliding oil is separated from top to bottom and stored in the sliding oil storage part in a stationary state. After the positioning magnetism of the switching part is realized, the electromagnetic iron is intermittently started, the repulsive force of the magnetism generated by electrification is used to realize the reciprocating movement of the magnetic plate, and the positioning collecting part supported by the impact block reciprocating impact is realized. Vibration treatment is completed, the vibration separation of the lubricating oil on the nut is completed, the separation of the lubricating oil on the surface of the nut is strengthened, the subsequent cleaning and oil removal steps are reduced, and the separated lubricating oil is filtered and collected, improving the recycling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a sectional view of the present application; Figure 3 is a bottom view of the clamping disc of the present application; Figure 4 Fig. 2 is a sectional view of the clamping disc and the adjustable support assembly of the present application; Figure 5 Fig. 3 is a sectional view of the clamping disc of the present application; Figure 6 Fig. 4 is a schematic view of the adjustable support assembly of the present application; Figure 7 Fig. 5 is a top schematic view of the base of the present application; Figure 8 Fig. 6 is a bottom schematic view of the switching part of the present application; Figure 9 Fig. 7 is a schematic view of the base of the present application; Figure 10 Fig. 8 is a sectional schematic view of the base and the positioning and collecting part in an embodiment of the present application; Figure 11 Fig. 9 is an enlarged schematic view of the structure at A in Fig. 8. Figure 10 Fig. 10 is an enlarged schematic view of the structure at B in Fig. 8.

[0019] In the figure: 1, base; 2, clamping disc; 3, clamping mechanism; 31, adapter clamping plate; 32, electric push rod; 33, support; 4, limiting support mechanism; 5, rotating processing part; 51, rotating shaft; 52, gear one; 53, motor; 54, gear two; 6, clamping groove; 7, adjustable support assembly; 71, support plate; 72, adapter hole; 73, push plate; 74, spring; 8, vacuum suction part; 81, vacuum pump; 82, annular plate; 83, communication hole; 9, positioning and collecting part; 91, sleeve shaft; 92, supporting ring; 10, switching part; 101, rotating ring; 102, supporting plate; 11, annular groove one; 12, adapter sleeve; 13, sleeving cavity; 14, through hole; 15, annular groove two; 16, magnetic block one; 17, magnetic block two; 18, top groove; 19, storage cavity; 20, filter hole; 21, electromagnet; 22, magnetic plate; 23, spring two; 24, impact block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0021] As Figures 1 to 11As shown, the embodiment of the present application provides a tapping clamp for nut processing and its clamping method, which comprises a base 1, a clamping disc 2, a clamping mechanism 3 and a limiting support mechanism 4, the top of the limiting support mechanism 4 is provided with a sliding oil spraying mechanism, the top of the base is rotationally provided with a rotating processing part 5, the top of the rotating processing part 5 is fixedly connected with the clamping disc 2, the outer side of the clamping disc 2 is circumferentially provided with clamping grooves 6 at equal intervals, the inside of the clamping disc 2 is elastically connected with an adjustable support assembly 7, the top of the base 1 is fixedly provided with a vacuum suction part 8, the suction end of the vacuum suction part 8 is movably sleeved at the bottom of the clamping disc 2, the top of the base 1 is provided with a positioning collection part 9, the positioning collection part 9 is located below the clamping groove 6, and the positioning collection part 9 corresponds to the position of the vacuum suction part 8, the top of the base 1 is rotationally provided with a switching part 10, the switching part 10 supports the positioning collection part 9 positioned at the top, the lower side of the switching part 10 is provided with a positioning mechanism, the positioning mechanism positions the switching part 10, when the adjustable support assembly 7 rotates to the upper side of the suction end of the vacuum suction part 8, the vacuum suction part 8 controls the corresponding adjustable support assembly 7 to move inwards along the clamping disc 2.

[0022] In use, the nut blank to be clamped and threaded is placed in the upper frame on one side of the clamp, the rotating processing part 5 is started, the motor 53 drives the rotating shaft 51 gear two 54 to rotate, thereby driving the gear one 52 to rotate, and then driving the rotating shaft 51 to rotate, the rotating shaft 51 drives the clamping disc 2 to deflect at a fixed deflection angle, and makes a group of clamping grooves 6 on the outside of the clamping disc 2 correspondingly deflect and be distributed at the end of the outside upper frame; then the pushing component in the upper frame pushes the nut blank in the upper frame, and makes a group of nut blanks slide into the corresponding clamping grooves 6, and stably fall on the top of the adjustable support assembly 7, the rotating processing part 5 deflects at a fixed angle again, so that the nut blank in the clamping groove 6 deflects to the inside of the limiting support mechanism 4, and after deflection again, the nut blank deflects to the lower part of the threading end, and the clamping groove 6 corresponds to the position of the outside clamping mechanism 3, with the action of the clamping mechanism 3, the nut is clamped in the inner wall of the clamping groove 6 from the outside, at the same time the threading end moves down, and the nut clamped and fixed is threaded, when threading, the sliding oil injection mechanism (not shown in the figure) provided on the limiting support mechanism 4 sprays sliding oil towards the threading area, after threading is completed, with the threading end moving up to reset, the clamping mechanism 3 is also reset synchronously, the rotating processing part 5 drives the clamping disc 2 to deflect again, and after deflection, the threaded nut is located directly above a group of positioning collection parts 9, and at this time the vacuum suction part 8 which has been started all the time sucks the air in the assembly cavity through the through hole 14 aligned at the corresponding position upwards, so that the sleeve joint cavity 13 in the assembly cavity forms a negative pressure area, and the push plate 73 in the adjustable support assembly 7 at the corresponding position is driven to slide and suck under the local negative pressure, and the support plate 71 in the adjustable support assembly 7 slides along the clamping disc 2 into the adaptive sleeve port 12 of the assembly cavity, when the adjustable support assembly 7 supporting the bottom of the above-mentioned threaded nut shrinks and moves, the nut losing support falls downwards and is automatically sleeved on the sleeve shaft 91 of the positioning collection part 9, the automatic positioning and stacking after clamping processing is completed, and with the clamping disc 2 deflecting again, the adjustable support assembly 7 in the clamping disc 2 loses the negative pressure effect after deflection and elastically resets, and in the stage of the support plate 71 shrinking and sliding in and elastically resetting, the residual material on the top of the support plate 71 is scraped and cleaned, and when deflecting to the upper frame, the next round of clamping processing of the clamping groove 6 is carried out.

[0023] Firstly, by using the clamping disc 2, the adjustable support assembly 7, the assembly chamber, the vacuum suction part 8 and the positioning collection part 9, after the tapping process is completed in the nut clamping stage, the nuts clamped in the clamping disc 2 are deflected above the positioning collection part 9, the adjustable support assembly 7 is automatically retracted and hidden by deflection, the support for the tapped nuts is released, and the nuts are automatically dropped and sleeved in the positioning collection part 9, the automatic stacking and collection after tapping and clamping are completed, on the one hand, the bottom extraction method is used to avoid the nut jamming and difficult separation, and on the other hand, the centralized collection and stacking are realized to avoid the random falling of the nuts, and the comprehensive use effect is good.

[0024] In addition, by using the clamping disc 2, the adjustable support assembly 7, the assembly chamber and the vacuum suction part 8, when the retractable movement of the adjustable support assembly 7 is realized, the elastic reset of the subsequent adjustable support assembly 7 is matched, and the support plate 71 top surface is frictionally cleaned relative to the clamping disc 2 after two-way sliding, the support plate 71 top surface is self-cleaned, impurities and attachments are removed, the subsequent nut support is stable, the existence of particles does not cause the nut to be placed unevenly, and at the same time, the existing air blowing is avoided to realize the falling method, so that the particles are avoided to fly and scatter.

[0025] In the embodiment 2, when the nuts are positioned and sleeved on the sleeve shaft 91 of the positioning collection part 9 after tapping and the surface contains a large amount of lubricating oil, the surface lubricating oil gravity slides downward along the top groove 18 and the filter hole 20 on the support ring 92 and falls into the storage cavity 19, the electromagnet 21 in the movable magnetic attraction mechanism at the top of the base 1 is started, the electromagnet 21 is intermittently started, the magnetism generated by the electrification of the electromagnet 21 is opposite to that of the upper magnetic plate 22, the electromagnet 21 pushes the magnetic plate 22 upward by repulsion, compresses the spring two 23, and makes the magnetic plate 22 drive the top impact block 24 to move upward rapidly, and impact the positioning collection part 9 at the top, so that the positioning collection part 9 vibrates, the lubricating oil on the nut further penetrates and separates downward, the electromagnet 21 reciprocates, the reciprocating vibration is completed, the separation and collection of the lubricating oil on the nut surface are completed.

[0026] Firstly, by using the lubricating oil storage part in the positioning collection part 9, cooperating with the stacking effect of the positioning collection part 9, after the automatic stacking sleeve after clamping processing, through the static state, guiding the lubricating oil to separate and store from top to bottom in the lubricating oil storage part, and cooperating with the movable magnetic attraction mechanism, after realizing the positioning magnetic attraction of the switching part 10, the electromagnet 21 is intermittently started, the repulsion force of the magnetism generated by the electrification to the magnetic plate 22 is realized, the magnetic plate 22 reciprocates, and cooperating with the reciprocating impact of the impact block 24 to the top supported positioning collection part 9, the vibration treatment is realized, the vibration separation of the lubricating oil on the nut is completed, the separation of the lubricating oil on the nut surface is strengthened, the subsequent cleaning and oil removal steps are reduced, the separated lubricating oil is filtered and collected, and the recycling efficiency is improved.

[0027] The inside of the clamping disc 2 is provided with an assembly chamber, the assembly chamber includes an adaptive socket 12, a socket cavity 13 and a through hole 14, the adaptive socket 12, the socket cavity 13 and the through hole 14 are all arranged in the inside of the clamping disc 2, and the adaptive socket 12, the socket cavity 13 and the through hole 14 are communicated at one time, the adaptive socket 12 is communicated with the clamping groove 6, the assembly chamber is one-to-one corresponding with the adjustable support assembly 7, the adjustable support assembly 7 is one-to-one corresponding with the clamping groove 6, the adjustable support assembly 7 is sleeved in the assembly chamber, the adjustable support assembly 7 includes a support plate 71, an adaptive hole 72, a push plate 73 and a spring 74, the adaptive hole 72 is arranged on the front surface of the support plate 71, the support plate 71 is slidingly sleeved in the clamping groove 6, one end of the push plate 73 is fixedly connected with the support plate 71, and the other end of the push plate 73 is fixedly connected with the spring 74, and the inner end of the spring 74 is fixedly connected in the socket cavity 13.

[0028] Through the elastic sleeve of the assembly chamber adaptive adjustable support assembly 7, and when the air in the socket cavity 13 in the assembly chamber is sucked out, the differential pressure is used to realize the movement control of the adjustable support assembly 7, the shrinkage hiding is used to release the support of the nut, the nut is released upward, and the shrinkage movement and the subsequent reset action are also used to realize the cleaning of the top of the support plate 71, remove impurities, keep the top of the subsequent support plate 71 clean, ensure that the subsequent nut is placed stably, and avoid the dispersion of particulate matter caused by the existing pneumatic blowing and pushing out of the material.

[0029] The rotating processing part 5 includes a rotating shaft 51, a gear one 52, a motor 53 and a gear two 54, one end of the rotating shaft 51 is rotatably installed in the inside of the base 1, the other end of the rotating shaft 51 is fixedly sleeved in the clamping disc 2, the gear one 52 is fixedly sleeved on the outer surface of the rotating shaft 51, the motor 53 is fixed on the top of the base 1, the gear two 54 is fixedly sleeved on the output shaft of the motor 53, and the gear two 54 is meshingly connected with the gear one 52.

[0030] The rotating processing part 5 realizes the equidistant deflection of the clamping disc 2 through the rotating control, intermittent start and stop, adapts to different processing work, and completes continuous processing.

[0031] The vacuum suction part 8 includes a vacuum pump 81, an annular plate 82 and a communication hole 83, the bottom of the clamping disc 2 is provided with an annular groove one 11, the annular groove one 11 is communicated with the through hole 14, the annular plate 82 is rotatably sleeved in the annular groove one 11, the communication hole 83 is arranged in the annular plate 82, the suction end of the vacuum pump 81 is fixedly arranged on the bottom of the annular plate 82, and the suction end of the vacuum pump 81 is communicated with the communication hole 83, the communication hole 83 is located on the rotating path of the through hole 14, and the vacuum pump 81 is fixedly arranged on the top of the base 1 through the bottom support table.

[0032] The vacuum suction part 8 sucks the air in the assembly chamber of the clamping disc 2 through the vacuum pump 81, the annular plate 82 and the communication hole 83, and only when the assembly chamber of the corresponding adjustable support assembly 7 corresponds to the position of the communication hole 83, that is, when the communication hole 83 sucks the air in the assembly chamber of the corresponding position through the through hole 14, the movement and contraction of a single set of adjustable support assemblies 7 are realized, and the nut is released from the support.

[0033] The positioning and collecting part 9 includes a sleeve shaft 91 and a supporting ring 92, the supporting ring 92 is fixedly sleeved at the bottom of the outer surface of the sleeve shaft 91, the diameter of the sleeve shaft 91 is smaller than the diameter of the inner hole of the nut, and the positioning and collecting part 9 is located on the rotation path of the fitting hole 72.

[0034] The positioning and collecting part 9 realizes the sleeving of the fallen nut through the position cooperation with the vacuum suction part 8, and the neatly stacked nut from bottom to top after continuous clamping processing is completed, and the batch transfer is also realized when the positioning and collecting part 9 is removed.

[0035] The switching part 10 includes a rotating ring 101 and a supporting plate 102, the top of the base 1 is provided with a ring groove two 15, the rotating ring 101 is rotatably sleeved in the ring groove two 15, the supporting plate 102 is distributed on the outer side surface of the rotating ring 101, and the top of the supporting plate 102 is provided with a positioning groove which is matched with the supporting ring 92.

[0036] The switching part 10 realizes the collection of multiple positioning and collecting parts 9 by rotating adjustment along the top of the base 1, cooperating with the supporting plate 102 which is distributed around the switching part 10 and supports the positioning and collecting part 9, and realizes the positioning and stacking of a large number of nuts under the deflection adjustment.

[0037] The positioning mechanism is a fixed magnetic attraction mechanism, which includes a magnetic block one 16 and a magnetic block two 17, the magnetic block two 17 is fixedly nested at the bottom of the supporting plate 102, the magnetic block one 16 is fixedly nested at the top of the base 1, and the position of the switching part 10 is positioned through the magnetic attraction of the magnetic block one 16 and the magnetic block two 17.

[0038] The fixed magnetic attraction mechanism realizes the magnetic attraction and fixation of the deflected switching part 10, maintains the position stability of the supported positioning and collecting part 9, and ensures the accurate sleeving of the nut falling from the top.

[0039] The positioning mechanism is a movable magnetic attraction mechanism, which includes an electromagnet 21, a magnetic plate 22, a second spring 23 and a striking block 24. The electromagnet 21 is fixedly nested at the top of the base 1. The magnetic plate 22 is movably sleeved in the stepped hole at the bottom of the supporting plate 102. The magnetic plate 22 is elastically connected in the stepped hole through the top-fixed second spring 23. The striking block 24 is fixed at the top of the magnetic plate 22. The position of the switching part 10 is positioned by the magnetic attraction of the electromagnet 21 and the magnetic plate 22. The supporting ring 92 is provided with a lubricating oil storage part. The movable magnetic attraction mechanism is separated from the lubricating oil on the surface of the nut through the lubricating oil storage part. The lubricating oil storage part includes a top groove 18, a storage cavity 19 and a filter hole 20. The storage cavity 19 is opened in the inside of the supporting ring 92. The top groove 18 is opened at the top of the supporting ring 92. The filter hole 20 is opened at the top of the supporting ring 92. The two ends of the filter hole 20 are respectively communicated with the top groove 18 and the storage cavity 19.

[0040] By using the cooperation of the movable magnetic attraction mechanism and the lubricating oil storage part, on the one hand, the positioning stability of the positioning and collecting part 9 supported in the switching part 10 is realized by using the magnetic attraction. On the other hand, when the electromagnet 21 in the movable magnetic attraction mechanism is intermittently started, the repulsive force of the magnetic pole is used to intermittently control the magnetic plate 22 to drive the striking block 24 to reciprocatingly strike the top-supported positioning and collecting part 9, so that the positioning and collecting part 9 is vibrated, the separation of the lubricating oil attached to the surface is accelerated, and the lubricating oil is effectively stored in the lubricating oil storage part. After the nut clamping processing, self-cleaning is realized, and the lubricating oil on the surface of the nut is also recovered.

[0041] The clamping mechanism 3 includes an adaptive clamping plate 31, an electric push rod 32 and a support 33. The support 33 is fixed outside the base 1. The electric push rod 32 is fixed in the support 33, and the movable end of the electric push rod 32 is fixedly connected with the adaptive clamping plate 31. The front end of the adaptive clamping plate 31 is adapted to the outside of the nut. The limiting support mechanism 4 is fixed outside the base 1, and includes an arc-shaped stop ring. The arc-shaped stop ring is located outside the clamping disc 2. The arc-shaped stop ring is provided with a groove for the movement of the adaptive clamping plate 31.

[0042] The clamping mechanism 3 cooperates with the limiting support mechanism 4 to further press the nut in the clamping groove 6 after the action, to complete the stable clamping and ensure the stable tapping.

[0043] A clamping method of a tapping clamp for nut machining, comprising the following clamping steps: First step: the nut blank to be clamped and tapped is guided and placed in the feeding frame on one side of the clamp. The rotating processing part 5 is started to drive the clamping disc 2 to deflect at a fixed deflection angle, and a group of clamping grooves 6 on the outside of the clamping disc 2 are correspondingly distributed at the end of the outside feeding frame. Second step: the pushing part in the feeding frame pushes the nut blanks in the feeding frame, and makes a group of nut blanks slide into the corresponding clamping groove 6 and stably fall on the top of the adjustable support assembly 7; Third step: rotate the processing part 5 to deflect by a fixed angle for the next time, so that the nut blanks in the clamping groove 6 are deflected to the inner side of the limiting support mechanism 4, and after deflected again, the nut blanks are deflected to the lower part of the tapping end, and the clamping groove 6 is in position corresponding to the outer clamping mechanism 3, and with the action of the clamping mechanism 3, the nut is clamped in the inner wall of the clamping groove 6 from the outside, while the tapping end moves downward, and the tapping process is performed on the clamped nut; Fourth step: after the tapping is completed, the tapping end moves upward to reset, and the clamping mechanism 3 also resets synchronously, the processing part 5 drives the clamping disc 2 to deflect again, and after deflection, the tapped nut is located directly above a group of positioning collection parts 9, and at this time the vacuum suction part 8 always starts to suction the air in the clamping disc 2 corresponding to the position of the vacuum suction part 8, so that the local negative pressure drives the adjustable support assembly 7 at the corresponding position to move inward along the clamping disc 2. Fifth step: when the adjustable support assembly 7 supporting the bottom of the above-mentioned tapped nut moves inward, the nut without support falls downward and is automatically sleeved on the positioning collection part 9, completing the automatic positioning and stacking after clamping processing, and with the clamping disc 2 deflecting again, the adjustable support assembly 7 in the clamping disc 2 after deflection resets, scrapes and cleans the residual material on the top, and when it deflects to the feeding frame, the next clamping process of the clamping groove 6 is performed.

[0044] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tapping fixture for nut machining, comprising a base (1), a clamping disc (2), a clamping mechanism (3) and a limiting support mechanism (4), the top of the limiting support mechanism (4) is provided with a sliding oil spraying mechanism, characterized in that: The top of the base is rotationally provided with a rotation processing portion (5), the top of the rotation processing portion (5) is fixedly connected with a clamping disc (2), the outer side surface of the clamping disc (2) is circumferentially provided with clamping grooves (6) at equal intervals, the inside of the clamping disc (2) is elastically connected with adjustable supporting assemblies (7), the top of the base (1) is fixedly provided with a vacuum suction portion (8), the suction end of the vacuum suction portion (8) is movably sleeved at the bottom of the clamping disc (2), the top of the base (1) is provided with a positioning and collecting portion (9), the positioning and collecting portion (9) is located below the clamping grooves (6), and the positioning and collecting portion (9) corresponds in position to the vacuum suction portion (8), the top of the base (1) is rotationally provided with a switching portion (10), the switching portion (10) supports the positioning and collecting portion (9) positioned at the top, the lower side of the switching portion (10) is provided with a positioning mechanism, the positioning mechanism positions the switching portion (10), When the adjustable supporting assembly (7) rotates to the upper side of the suction end of the vacuum suction portion (8), the vacuum suction portion (8) controls the corresponding adjustable supporting assembly (7) to move inwards along the clamping disc (2).

2. The tapping jig for nut machining as claimed in claim 1, wherein: The inside of the clamping disc (2) is provided with an assembly chamber, the assembly chamber comprises an adaptive sleeve opening (12), a sleeving cavity (13) and a through hole (14), the adaptive sleeve opening (12), the sleeving cavity (13) and the through hole (14) are all arranged in the inside of the clamping disc (2), and the adaptive sleeve opening (12), the sleeving cavity (13) and the through hole (14) are in communication at one time, the adaptive sleeve opening (12) is in communication with the clamping grooves (6), the assembly chamber is in one-to-one correspondence with the adjustable supporting assemblies (7), the adjustable supporting assemblies (7) are in one-to-one correspondence with the clamping grooves (6), the adjustable supporting assemblies (7) are sleeved in the assembly chamber, the adjustable supporting assemblies (7) comprise a supporting plate (71), an adaptive hole (72), a push plate (73) and a spring (74), the adaptive hole (72) is arranged on the front surface of the supporting plate (71), the supporting plate (71) is slidably sleeved in the clamping groove (6), one end of the push plate (73) is fixedly connected with the supporting plate (71), and the other end of the push plate (73) is fixedly connected with the spring (74), and the inner end of the spring (74) is fixedly connected in the sleeving cavity (13).

3. The tapping jig for nut machining as claimed in claim 2, wherein: The rotation processing portion (5) comprises a rotation shaft (51), a gear one (52), a motor (53) and a gear two (54), one end of the rotation shaft (51) is rotationally installed in the inside of the base (1), and the other end of the rotation shaft (51) is fixedly sleeved in the clamping disc (2), the gear one (52) is fixedly sleeved on the outer surface of the rotation shaft (51), the motor (53) is fixedly arranged at the top of the base (1), the gear two (54) is fixedly sleeved on the output shaft of the motor (53), and the gear two (54) is in meshing connection with the gear one (52).

4. The tapping jig for nut machining according to claim 3, characterized in that: The vacuum suction part (8) comprises a vacuum pump (81), an annular plate (82) and a communication hole (83), the bottom of the clamping disc (2) is provided with an annular groove I (11), the annular groove I (11) is communicated with the through hole (14), the annular plate (82) is rotatably sleeved in the annular groove I (11), the communication hole (83) is arranged in the annular plate (82), the suction end of the vacuum pump (81) is fixed at the bottom of the annular plate (82), and the suction end of the vacuum pump (81) is communicated with the communication hole (83), the communication hole (83) is located on the rotating path of the through hole (14), and the vacuum pump (81) is fixed on the top of the base (1) through the bottom support table.

5. The tapping jig for nut machining as claimed in claim 4, wherein: The positioning and collecting part (9) comprises a sleeve shaft (91) and a supporting ring (92), the supporting ring (92) is fixedly sleeved at the bottom of the outer surface of the sleeve shaft (91), the diameter of the sleeve shaft (91) is smaller than that of the nut inner hole, and the positioning and collecting part (9) is located on the rotating path of the adaptive hole (72).

6. The tapping jig for nut machining according to claim 5, characterized in that: The switching part (10) comprises a rotating ring (101) and a supporting plate (102), the top of the base (1) is provided with an annular groove II (15), the rotating ring (101) is rotatably sleeved in the annular groove II (15), and the supporting plate (102) is distributed on the outer side surface of the rotating ring (101) in a ring shape; the top of the supporting plate (102) is provided with a positioning groove which is matched with the supporting ring (92).

7. The tapping jig for nut machining according to claim 6, characterized in that: The positioning mechanism is a fixed magnetic attraction mechanism, the fixed magnetic attraction mechanism comprises a magnetic block I (16) and a magnetic block II (17), the magnetic block II (17) is fixedly nested at the bottom of the supporting plate (102), the magnetic block I (16) is fixedly nested at the top of the base (1), and the position of the switching part (10) is positioned through the magnetic attraction between the magnetic block I (16) and the magnetic block II (17).

8. The tapping jig for nut machining as claimed in claim 6, wherein: The positioning mechanism is a movable magnetic attraction mechanism, the movable magnetic attraction mechanism comprises an electromagnet (21), a magnetic plate (22), a spring II (23) and a striking block (24), the electromagnet (21) is fixedly nested at the top of the base (1), the magnetic plate (22) is movably sleeved in the stepped hole at the bottom of the supporting plate (102), the magnetic plate (22) is elastically connected in the stepped hole through the spring II (23) fixed at the top, the striking block (24) is fixed at the top of the magnetic plate (22), the position of the switching part (10) is positioned through the magnetic attraction between the electromagnet (21) and the magnetic plate (22), a lubricating oil storage part is arranged in the supporting ring (92), the movable magnetic attraction mechanism is separated from the lubricating oil on the surface of the nut through the lubricating oil storage part, the lubricating oil storage part comprises a top groove (18), a storage cavity (19) and a filter hole (20), the storage cavity (19) is arranged in the inside of the supporting ring (92), the top groove (18) is arranged at the top of the supporting ring (92), the filter hole (20) is arranged at the top of the supporting ring (92), and the two ends of the filter hole (20) are communicated with the top groove (18) and the storage cavity (19) respectively.

9. The tapping jig for nut machining as claimed in claim 1, wherein: The clamping mechanism (3) includes an adaptive clamp plate (31), an electric push rod (32) and a bracket (33), the bracket (33) is fixed on the outside of the base (1), the electric push rod (32) is fixed in the bracket (33), and the movable end of the electric push rod (32) is fixedly connected with the adaptive clamp plate (31), the front end of the adaptive clamp plate (31) is matched with the outer side of the nut, the limiting support mechanism (4) is fixed on the outside of the base (1), and the limiting support mechanism (4) includes an arc-shaped stop ring, the arc-shaped stop ring is located on the outside of the clamping disc (2), and a groove for the movement of the adaptive clamp plate (31) is reserved on the arc-shaped stop ring.

10. A method of clamping a tapping jig for nut machining according to any one of claims 1 to 9, characterized in that: The clamping steps include the following: First step: the nut blank to be clamped and tapped is placed in the feeding frame on one side of the clamp, the rotating processing part (5) is started, the clamping disc (2) is driven to deflect at a fixed deflection angle, and a group of clamping grooves (6) on the outside of the clamping disc (2) are correspondingly distributed at the end of the outside feeding frame; Second step: the nut blank in the feeding frame is pushed by the pushing component in the feeding frame, and a group of nut blanks are slid into the corresponding clamping grooves (6) and stably fall on the top of the adjustable support assembly (7); Third step: the rotating processing part (5) is rotated to deflect at a fixed angle again, so that the nut blank in the clamping groove (6) is deflected to the inside of the limiting support mechanism (4), and after deflection again, the nut blank is deflected to the lower part of the tapping end, and the clamping groove (6) corresponds to the position of the outside clamping mechanism (3), and the clamping mechanism (3) acts from the outside to clamp the nut in the inner wall of the clamping groove (6), while the tapping end moves downward to tap the clamped nut; Fourth step: after tapping is completed, the tapping end moves upward to reset, the clamping mechanism (3) is reset synchronously, the rotating processing part (5) drives the clamping disc (2) to deflect again, and the tapped nut is located directly above a group of positioning collection parts (9) after deflection, and at this time, the vacuum suction part (8) is always started to suction the air in the corresponding area of the clamping disc (2) corresponding to the position of the vacuum suction part (8), so that the local negative pressure drives the adjustable support assembly (7) at the corresponding position to move inwards along the clamping disc (2); Fifth step: when the adjustable support assembly (7) supporting the bottom of the above-mentioned tapped nut moves inwards, the nut losing support falls downward and is automatically sleeved on the positioning collection part (9), the automatic positioning and stacking after clamping processing is completed, and after the clamping disc (2) deflects again, the adjustable support assembly (7) in the clamping disc (2) after deflection resets, scrapes and cleans the top residual material, and when it deflects to the feeding frame, the next round of clamping processing of the clamping groove (6) is carried out.

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