CN112475903A

CN112475903A - High-quality servo machining assembly line

Info

Publication number: CN112475903A
Application number: CN202011227654.XA
Authority: CN
Inventors: 卓沧升
Original assignee: Zhangzhou Jianxin Machinery Co ltd
Current assignee: Hefei Heyu Precision Technology Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-03-12
Anticipated expiration: 2040-11-06
Also published as: CN112475903B

Abstract

The invention discloses a high-quality servo machining assembly line which comprises a punching device for punching a nut blank, a milling device for milling six edge surfaces of the nut blank, and a tapping and milling device for chamfering and then tapping the nut blank; placing the nut blank on a clamping device on a punching device, a milling device or a tapping and milling device; after the nut blank is punched by the punching device, the clamping device clamps the nut blank to the milling device to mill six edge surfaces of the nut blank, the milling device mills three non-adjacent edge surfaces of the nut blank at the same time, the milling device returns, then the rotating disc rotates by 60 degrees, the milling device mills the other three non-adjacent edge surfaces of the nut blank at the same time, and the clamping device clamps the nut blank to the tapping device to chamfer and tap threads after processing; milling efficiency is high, and manual operation is replaced by the clamping device, so that the whole device is more automatic.

Description

High-quality servo machining assembly line

Technical Field

The invention relates to the field of nut processing machinery, in particular to a high-quality servo processing assembly line.

Background

Hexagonal nut is a comparatively nut commonly used, and the nut blank is processed through the digit control machine tool to current hexagonal nut processing most, mills through the digit control machine tool earlier to the nut blank, mills six faceted pebbles, and the faceted pebble of once milling all needs the tool setting again, and process time is long, then punches a hole to the nut blank and forms the hole, and the manual work is tapped the hole of nut blank at last, and workman intensity of labour is big, and the processing step is loaded down with trivial details moreover.

In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.

Disclosure of Invention

The invention mainly aims to provide a high-quality servo machining assembly line which is high in automation degree and high in production efficiency.

In order to achieve the above purpose, the solution of the invention is:

a high-quality servo machining assembly line comprises a punching device for punching a nut blank, a milling device for milling six edge surfaces of the nut blank, and a tapping and milling device for chamfering and then tapping the nut blank; and a clamping device for placing the nut blank on the punching device, the milling device or the tapping and milling device.

Further, the milling device comprises a milling fixed rotating mechanism which can clamp and fix the inner hole of the nut blank and can rotate, and a milling mechanism which can mill the fixed nut blank.

Further, the milling mechanism comprises first milling equipment for milling three nonadjacent edge surfaces of the nut blank.

Further, the milling mechanism comprises a milling bearing ring bearing the first milling device; the first milling equipment is connected to the inner side wall of the milling bearing ring in a sliding mode; the first milling device may be remote from or close to the milling fixture rotation mechanism.

Further, the first milling equipment comprises three first milling bodies which are distributed on the inner side wall of the milling bearing ring at intervals around the axis of the milling bearing ring.

Further, the first milling body comprises a first milling moving seat capable of moving on the inner side wall of the milling bearing ring, a first milling connecting seat with one end connected with the first milling moving seat and the other end connected with a first milling cutter, and a first milling cutter for machining the nut blank.

Further, the first milling body further comprises a first milling telescopic mechanism for driving the first milling connecting seat to be close to or far away from the axis of the milling bearing ring.

Further, the first milling telescopic mechanism comprises a first guide post formed on the first milling movable seat facing one surface of the first milling connecting seat, a first guide hole formed on the first milling connecting seat and matched with the first guide post, a first threaded hole formed in the first milling connecting seat, and a first milling screw capable of driving the first milling connecting seat to be far away from or close to the milling bearing ring.

Further, the first milling body further comprises a first milling movement driving mechanism for driving the first milling connecting seat to move; the first milling movable driving mechanism comprises a first milling sliding groove and a first milling driving oil cylinder, wherein the first milling sliding groove is formed in the inner side wall of the milling bearing ring and can accommodate the first milling movable seat, and the first milling driving oil cylinder drives the first milling movable seat to move.

Furthermore, a first sliding groove convex block is formed on two non-adjacent side walls of the first milling sliding groove, and a first sliding groove concave pit matched with the first sliding groove convex block is formed on the first connecting seat.

Further, the milling, fixing and rotating mechanism comprises a fixing column and a rotating disc, wherein the fixing column can be used for sleeving an inner hole in the nut blank, and the rotating disc drives the fixing column to rotate; the axis of the fixing column coincides with the axis of the milling bearing ring.

Further, the fixing column comprises an outer fixing cylinder and an abutting body positioned in the outer fixing cylinder; a notch is formed on the wall of the outer fixed cylinder and used for ejecting the propping body; and an abutting ring for abutting against the nut blank is formed on the outer side wall of the outer fixing cylinder positioned at the bottom of the notch.

Further, the abutting body comprises an abutting circular table capable of moving in the outer fixed cylinder and three ejecting blocks arranged on the outer wall of the abutting circular table at intervals; the ejection block is provided with an arc-shaped side wall corresponding to the side wall of the abutting circular truncated cone.

Further, the ejection block comprises an ejection connecting part which is contacted with the circular truncated cone and an ejection moving part which can be ejected or retracted from the upper notch of the outer fixed cylinder; the outer peripheral surface of the ejection moving part can be attached to the inner wall of the inner hole on the hexagonal thread bristle.

Furthermore, a return spring is connected between the ejection connecting part and the inner side wall of the outer fixed cylinder.

Further, the punching device comprises a punching clamping mechanism for clamping the nut blank after heat treatment, a punching mechanism for punching the center of the nut blank after heat treatment, a heat treatment mechanism for heat treatment of the nut blank and a punching conveying mechanism for conveying the nut blank to the punching clamping mechanism.

Furthermore, the punching clamping mechanism is positioned on a punching bearing platform at the outlet end of the punching conveying mechanism, a punching clamping body for clamping and fixing the nut blank and a punching clamping driving device for driving the punching clamping body to clamp or release.

Further, the punching clamping body comprises a punching clamping block; the side wall of the punching clamping block facing the nut blank can be attached to the outer peripheral surface of the nut blank.

Further, the punching clamping driving device comprises a punching clamping driving oil cylinder; the output end of the punching clamping driving oil cylinder is connected with the punching clamping body.

Further, the punching mechanism is positioned above the punching clamping mechanism.

Further, the punching mechanism comprises a punching cutter, a punching rotating motor for driving the punching cutter to rotate, and a punching cutter driving oil cylinder for driving the punching cutter to be close to or far away from the punching clamping mechanism.

Further, the transport mechanism that punches a hole is including the transportation track that punches a hole, be located the transportation track that punches a hole end and can promote the push cylinder of nut blank to and be located the transportation track rear end that punches a hole and be located feed cylinder under the nut in push cylinder the place ahead.

Further, the track width of the punching transportation track is larger than the diameter of the nut blank and smaller than the diameters of the two nut blanks.

Further, the nut blanking barrel is positioned above the punching transportation track; the nut blanking barrel is vertically provided with a blanking channel for accommodating a nut blank.

Further, the punching device also comprises a nut placing groove for receiving the nut blank falling from the punching clamping mechanism.

Further, the heat treatment mechanism comprises a high-temperature tunnel furnace; the high-temperature tunnel furnace is positioned above the punching and conveying mechanism.

Further, the tapping and milling device comprises a tapping and milling clamping mechanism for clamping the milled nut blank, a chamfering mechanism for chamfering the nut blank and a tapping mechanism for tapping the nut blank.

Furthermore, the tapping and milling device further comprises a tapping and milling bearing seat for bearing the chamfering mechanism and the tapping mechanism, and the tapping and milling bearing seat is provided with a tapping and milling sliding groove for accommodating the chamfering mechanism and the tapping mechanism.

Furthermore, the tapping and milling device further comprises a tapping and milling upper and lower driving mechanism for driving the tapping and milling bearing seat to move up and down.

Further, the upper and lower driving mechanism for tapping and milling comprises a tapping and milling screw hole formed in the bearing seat for tapping and milling, a tapping and milling screw matched with the tapping and milling screw hole, and a tapping and milling screw driving motor driving the tapping and milling screw to rotate.

Furthermore, the upper and lower tapping and milling driving mechanism further comprises a tapping and milling screw bearing seat for bearing the tapping and milling screw and a tapping and milling screw driving motor.

Further, attack and mill fixture including attacking and mill the clamping body, support the nut blank attack and mill processing and support the platform, and bear attack and mill the clamping body with attack and mill processing and support the platform and attack and mill the centre gripping and bear the seat.

Further, attack and mill the clamping body including connecting attack on milling the centre gripping carrier seat and mill the centre gripping fixing base, with attack that mills centre gripping fixing base sliding connection attack and mill the centre gripping and remove the seat, with attack that mills that the centre gripping removes the seat rotation and connect and attack that mills the centre gripping and rotate the post to and connect and rotate the post towards the nut blank and mill the grip block.

Further, the chamfering mechanism comprises a chamfering tool, a chamfering tool clamping and rotating seat and a chamfering tool driving mechanism, wherein the chamfering tool clamping and rotating seat is used for clamping the chamfering tool and can rotate, and the chamfering tool driving mechanism drives the chamfering tool clamping and rotating seat to move towards the tapping and milling clamping mechanism.

Further, the chamfering tool comprises a chamfering tool clamping part for clamping and fixing the chamfering tool rotating seat and a chamfering processing part for chamfering the nut blank.

Further, chamfer processing portion is cylindricly, chamfer processing portion is formed with the round platform recess of indent towards the one side of hexagon nut, round platform recess bottom is formed with the chamfer awl piece that is the triangle pyramid.

Further, tapping mechanism includes the screw tap, the centre gripping the seat is rotated in the screw tap and rotatable screw tap centre gripping to and the screw tap actuating mechanism who drives the screw tap centre gripping and rotate the seat and move towards tapping and milling clamping mechanism.

Furthermore, the tapping and milling device further comprises a finished product collecting box positioned below the tapping and milling clamping mechanism.

Further, the clamping device comprises a clamping manipulator.

Further, the numerical control bearing box body is used for bearing the punching device, the milling device, the tapping and milling device and the clamping device.

After the structure is adopted, the high-quality servo processing assembly line has the following beneficial effects:

1. after the nut blank is punched by the punching device, the clamping device clamps the nut blank to the milling device to mill six edge surfaces of the nut blank, the milling device mills three non-adjacent edge surfaces of the nut blank at the same time, the milling device returns, then the rotating disc rotates by 60 degrees, the milling device mills the other three non-adjacent edge surfaces of the nut blank at the same time, and the clamping device clamps the nut blank to the tapping device to chamfer and tap threads after processing; milling efficiency is high, and manual operation is replaced by the clamping device, so that the whole device is more automatic.

2. The nut feeding barrel is arranged above the punching conveying track, so that the nut blank falls onto the punching conveying track through self weight, and the nut blank is pushed forwards by the pushing cylinder; automatic blanking of the nut blank is realized.

3. Through arranging the abutting round table with the small head facing outwards and the ejecting block in the outer fixed cylinder, when the punched nut blank is sleeved on the outer peripheral surface of the outer fixed cylinder by the clamping device, the oil cylinder drives the abutting round table to move outwards along the axis of the outer fixed cylinder so as to eject the ejecting block, and the ejecting block abuts against the inner wall of the inner hole of the nut blank so as to tightly fix the nut blank.

Drawings

Fig. 1 is a schematic perspective view of a high-quality servo processing line according to the present invention.

Fig. 2 is a schematic perspective view of a punching device and a tapping and milling device according to the present invention.

Fig. 3 is a schematic perspective view of the milling mechanism according to the present invention.

Fig. 4 is a schematic perspective view of a fixing post according to the present invention.

Fig. 5 is a schematic perspective view of the abutting body of the present invention.

Fig. 6 is a schematic perspective view of a punching apparatus according to the present invention.

Fig. 7 is a schematic perspective view of the chamfering mechanism and the tapping mechanism according to the present invention.

Fig. 8 is a schematic perspective view of the chamfering tool according to the present invention.

Fig. 9 is a schematic perspective view of the tapping and milling clamping mechanism of the present invention.

In the figure: a punching device 1; a punching clamping mechanism 11; a punch carrier table 111; a punch clamping block 112; a punching clamping driving cylinder 113; a punching mechanism 12; a punching cutter 121; the punching cutter driving cylinder 122; a punching transport mechanism 13; a punched hole transportation rail 131; a push cylinder 132; a nut discharging barrel 133; a nut placement groove 14; a high temperature tunnel furnace 15;

a milling device 2; a milling fixed rotating mechanism 21; a fixing column 211; the outer fixed barrel 2111; the abutting ring 21111; the abutting body 2112; the abutting circular truncated cone 21121; an ejection block 21122; ejection connection 211221; an ejection moving section 211222; a return spring 21123; a rotating disk 212; a milling mechanism 22; a first milling body 221; a first milling moving seat 2211; first guide post 22111; the first milling screw 22112; a first milled connection seat 2212; a first milling cutter 2213; a first milling drive cylinder 2214; milling the carrier ring 23;

a tapping and milling device 3; a tapping and milling clamping mechanism 31; tapping and milling the clamping body 311; a tapping, milling and clamping fixed seat 3111; a tapping and milling clamping movable seat 3112; tapping, milling and clamping the rotating column 3113; a tapping and milling clamping block 3314; a top abutment 312 is machined by tapping and milling; a chamfering mechanism 32; a chamfering tool 321; a chamfering tool holding portion 3211; the chamfer processed portion 3212; the chamfering tool grips the rotating seat 322; a tapping mechanism 33; a tap 331; a tap holding rotary base 332; tapping and milling the bearing seat 34; a tapping and milling up-down driving mechanism 35; a finished product collection box 36;

a holding device 4; a clamping robot 41; and a numerical control bearing box body 5.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1 to 9, which are high-quality servo processing lines according to the present invention, the high-quality servo processing line includes a punching device 1 for punching a nut blank, a milling device 2 for milling six edges of the nut blank, and a tapping and milling device 3 for chamfering and then tapping the nut blank; and a clamping device 4 for placing the nut blank on the punching device 1, the milling device 2 or the tapping and milling device 3. After the nut blank is punched by the punching device 1, the clamping device 4 clamps the nut blank to the milling device 2 to mill six edge surfaces of the nut blank, the milling device 2 mills three non-adjacent edge surfaces of the nut blank at the same time, the milling device 2 returns, then the rotating disc 212 rotates 60 degrees, the milling device 2 mills the other three non-adjacent edge surfaces of the nut blank at the same time, and the clamping device 4 clamps the nut blank to the milling device 3 to chamfer and tap threads after processing; the milling efficiency is high, and the clamping device 4 is adopted to replace manual operation, so that the whole device is more automatic.

Preferably, the milling device 2 comprises a milling fixing rotating mechanism 21 which can clamp and fix the inner hole of the nut blank and can rotate, and a milling mechanism 22 which can mill the fixed nut blank. The milling mechanism 22 is more stable and accurate in milling through the milling fixed rotating mechanism 21.

Preferably, the milling mechanism 22 comprises a first milling device for milling three non-adjacent lands of the nut blank. The first milling equipment mills three edge surfaces firstly, then returns to the original position, the milling fixed rotating mechanism 21 drives the nut blank to rotate for 60 degrees, then the first milling equipment mills the other three edge surfaces, the milling precision is ensured, and the processing efficiency is also improved.

Preferably, the milling mechanism 22 comprises a milling carrier ring 23 carrying the first milling device; the first milling equipment is connected on the inner side wall of the milling bearing ring 23 in a sliding manner; the first milling device may be remote from or close to the milling fixture 21. The first milling device is carried more reliably by providing the milling carrier ring 23.

Preferably, the first milling device comprises three first milling bodies 221 distributed at intervals around the axis of the milling carrier ring 23 on the inner side wall of the milling carrier ring 23. The milling of six edge surfaces of the nut blank is realized through the cooperation of the first milling body 221 and the milling rotary fixing mechanism.

Preferably, the first milling body 221 includes a first milling movable seat 2211 movable on the inner sidewall of the milling bearing ring 23, a first milling connecting seat 2212 having one end connected to the first milling movable seat 2211 and the other end connected to the first milling cutter 2213, and a first milling cutter 2213 for processing the nut blank. The first milling movable base 2211 drives the first milling connecting base 2212 to move, so that the first milling cutter 2213 can process the outer side wall of the nut blank fixed on the milling fixing mechanism, and the three first milling movable bases 2211 of the three first milling bodies 221 move synchronously, and the processing efficiency is improved.

Preferably, the first milling body 221 further comprises a first milling telescoping mechanism that drives the first milling connector seat 2212 closer to or away from the axis of the milling carrier ring 23. Through setting up first milling telescopic machanism and making can process the nut blank of equidimension not, produce the nut blank of different specifications, strong adaptability.

Preferably, the first milling telescoping mechanism includes a first guiding post 22111 formed on a side of the first milling moving seat 2211 facing the first milling connecting seat 2212, a first guiding hole formed on the first milling connecting seat 2212 and matching with the first guiding post 22111, a first threaded hole forming the first milling connecting seat 2212, and a first milling screw 22112 capable of driving the first milling connecting seat 2212 away from or close to the milling bearing ring 23. The drive is more smooth by first milling screw 22112.

Preferably, the first milling body 221 further comprises a first milling moving driving mechanism for driving the first milling connecting seat 2212 to move; the first milling moving driving mechanism includes a first milling sliding groove formed on the inner sidewall of the milling bearing ring 23 and capable of accommodating the first milling moving seat 2211, and a first milling driving cylinder 2214 for driving the first milling moving seat 2211 to move. Through the first milling driving oil cylinder 2214, the reliability is higher, and the cutting process is more stable.

Preferably, two non-adjacent side walls of the first milling chute are provided with first chute protrusions, and the first connecting seat is provided with first chute pits which are matched with the first chute protrusions. Making the sliding connection more reliable.

Preferably, the milling fixed rotating mechanism 21 includes a fixed column 211 for allowing an inner hole on the nut blank to be sleeved in, and a rotating disc 212 for driving the fixed column 211 to rotate; the axis of the fixing post 211 coincides with the axis of the milling carrier ring 23. The coincident axes allow for better positioning of the milling mechanism 22 prior to machining.

Preferably, the fixing post 211 comprises an outer fixing barrel 2111, and an abutting body 2112 located in the outer fixing barrel 2111; a notch is formed on the wall of the outer fixed barrel 2111 for ejecting the propping body 2112; an abutting ring 21111 for abutting against the nut blank is formed on the outer side wall of the outer fixing barrel 2111 at the bottom of the notch. The nut blank is held tightly by the ejection of the abutment 2112 from the indentation.

Preferably, the abutting body 2112 comprises an abutting circular truncated cone 21121 which can move in the outer fixed cylinder 2111, and three ejecting blocks 21122 which are arranged on the outer wall of the abutting circular truncated cone 21121 at intervals; the ejector 21122 has arc-shaped side walls corresponding to the side walls of the abutment boss 21121. The inward side wall of the ejection block 21122 is attached to the side wall of the abutting circular table 21121, so that the surface area contact is increased, and the abrasion of the ejection block 21122 when the abutting circular table 21121 moves is reduced.

Preferably, the ejector block 21122 includes an ejector connecting portion 211221 contacting the circular truncated cone, and an ejector moving portion 211222 which can eject or retract from the notch on the outer fixed cylinder 2111; the outer peripheral surface of the ejector moving portion 211222 can be attached to the inner wall of the inner hole of the hexagonal thread. The outer peripheral surface of the ejecting moving part 211222 can be attached to the inner wall of the inner hole on the hexagonal thread bristle, and the surface area contact is increased, so that the fixation is more firm.

Preferably, a return spring 21123 is connected between the ejector connecting portion 211221 and the inner side wall of the outer fixed barrel 2111. The return spring 21123 returns the ejector 21122 to prevent interference with the next nut blank.

Preferably, the punching apparatus 1 includes a punch clamping mechanism 11 that clamps the heat-treated nut blank, a punching mechanism 12 that punches the center of the heat-treated nut blank, a heat treatment mechanism that heat-treats the nut blank, and an impact conveyance mechanism 13 that conveys the nut blank to the punch clamping mechanism 11. The nut blank after heat treatment is punched better, and is more intelligent.

Preferably, the punching clamping mechanism 11 is located at the punching bearing platform 111 at the outlet end of the impact transportation mechanism 13, and comprises a punching clamping body for clamping and fixing the nut blank, and a punching clamping driving device for driving the punching clamping body to clamp or release. When the nut blank moves to the punching bearing platform 111, the punching clamping body clamps and processes, so that the punching process is more stable.

Preferably, the punch clamp body comprises a punch clamp block 112; the side walls of the pierce block 112 facing the nut blank may abut the outer periphery of the nut blank. The contact surface area is increased, and the punching clamping block 112 is clamped more stably.

Preferably, the punching clamping driving device comprises a punching clamping driving oil cylinder 113; the output end of the punching clamping driving oil cylinder 113 is connected with the punching clamping body. The driving is more reliable through the oil cylinder.

Preferably, the punching mechanism 12 is located above the punching clamp mechanism 11. Is more reasonable.

Preferably, the punching mechanism 12 includes a punching cutter 121, a punching rotation motor for driving the punching cutter 121 to rotate, and a punching cutter driving cylinder 122 for driving the punching cutter 121 to approach or separate from the punching clamping mechanism 11. The driving of the oil cylinder 122 by the punching cutter is more stable and firm.

Preferably, the impact transportation mechanism 13 includes a punch transportation rail 131, a push cylinder 132 located at the end of the punch transportation rail 131 and capable of pushing the nut blank, and a nut dropping barrel 133 located at the rear end of the punch transportation rail 131 and in front of the push cylinder 132. More intelligent, the pushing cylinder 132 pushes the nuts dropped from the nut dropping barrel 133 forward one by one.

Preferably, the track width of the punch transport track 131 is greater than the diameter of the nut blank and less than the diameter of both nut blanks. The most preferable distance of the track width of the punching transport track 131 is slightly larger than the diameter of the nut blanks, so that the nut blanks can move on the punching transport track 131 one by one in order to facilitate subsequent processing.

Preferably, the nut feeder barrel 133 is located above the punch transport rail 131; the nut blanking barrel 133 is vertically provided with a blanking channel for accommodating nut blanks. Automatic unloading is realized to dead weight through the nut blank, promotes cylinder 132 and will drop the nut blank propelling movement forward one by one, and the nut blank in feed cylinder 133 falls on the transportation track 131 that punches a hole automatically under the nut, more intelligent.

Preferably, the punching device 1 further comprises a nut placing groove 14 for receiving the nut blank dropped from the punch holding mechanism 11. More reasonable, the clamping device 4 is convenient to clamp.

Preferably, the heat treatment means comprises a high temperature tunnel furnace 15; a high temperature tunnel furnace 15 is located above the impact transportation mechanism 13. The nut blanks heated by the high-temperature tunnel furnace 15 are easier to punch.

Preferably, the tapping and milling device 3 includes a tapping and milling clamping mechanism 31 for clamping the milled nut blank, a chamfering mechanism 32 for chamfering the nut blank, and a tapping mechanism 33 for tapping the nut blank. And is more intelligent.

Preferably, the tapping and milling device 3 further includes a tapping and milling bearing seat 34 for bearing the chamfering mechanism 32 and the tapping mechanism 33, and the tapping and milling bearing seat 34 is provided with a tapping and milling sliding groove for accommodating the chamfering mechanism 32 and the tapping mechanism 33. Move in attacking and milling the sliding tray through hydro-cylinder drive chamfer mechanism 32 and attack screw mechanism 33, chamfer mechanism 32 and attack screw mechanism 33 and remove in attacking and milling the sliding tray, have shortened the distance between two processing steps, promote machining efficiency.

Preferably, the tapping and milling device 3 further comprises a tapping and milling up-down driving mechanism 35 for driving the tapping and milling bearing seat 34 to move up and down. It leads to attacking and milling device 3 and can step down to attack and mill upper and lower actuating mechanism 35 through the setting for 4 centre gripping nut blanks of clamping device are to attacking and milling fixture 31 more convenient.

Preferably, the upper and lower tapping and milling driving mechanism 35 includes a tapping and milling screw hole formed in the tapping and milling bearing seat 34, a tapping and milling screw matched with the tapping and milling screw hole, and a tapping and milling screw driving motor for driving the tapping and milling screw to rotate. The screw is driven more stably through tapping and milling.

Preferably, the upper and lower tapping and milling driving mechanism 35 further includes a tapping and milling screw bearing seat for bearing the tapping and milling screw and the tapping and milling screw driving motor. And is more reasonable.

Preferably, the tapping and milling clamping mechanism 31 includes a tapping and milling clamping body 311, a tapping and milling abutting table 312 abutting against the nut blank, and a tapping and milling clamping bearing seat bearing the tapping and milling clamping body 311 and the tapping and milling abutting table 312. The top supporting table 312 is attacked and milled through the arrangement, so that during machining, the non-machined surface of the nut blank can be abutted to the top supporting table 312 for the attacking and milling, and machining is more stable.

Preferably, attack and mill the holding body 311 and including connecting the centre gripping fixing base 3111 of attacking on attacking the centre gripping bearing seat of milling, with attack and mill the centre gripping and remove the seat 3112 of attacking of milling centre gripping fixing base 3111 sliding connection, with attack and mill centre gripping rotation post 3113 of attacking that mills the centre gripping and remove the seat 3112 and rotate the connection, and connect the rotation post towards the nut blank attack and mill grip block 3314. It rotates the post 3113 to lead to the nut blank to process the one side through the setting-up tapping and milling centre gripping, can rotate under the drive of tapping and milling centre gripping rotation post 3113, need not to turn over the one side and is carrying out the centre gripping after taking off again, and is more reasonable.

Preferably, the chamfering mechanism 32 includes a chamfering tool 321, a chamfering tool holding rotary base 322 which holds the chamfering tool 321 and is rotatable, and a chamfering tool 321 driving mechanism which drives the chamfering tool holding rotary base 322 to move toward the tapping and milling holding mechanism 31. And is more reasonable.

Preferably, the chamfering tool 321 includes a chamfering tool holder 3211 for holding the rotary seat of the chamfering tool 321, and a chamfering processed portion 3212 for chamfering the nut blank. And is more reasonable.

Preferably, the chamfer processing portion 3212 is cylindrical, an inwardly concave circular truncated cone groove is formed in one surface of the chamfer processing portion 3212 facing the hexagon nut, and a triangular pyramid-shaped chamfer cone block is formed at the bottom of the circular truncated cone groove. Be cylindricly through setting up chamfer processing portion 3212, chamfer processing portion 3212 is formed with the round platform recess of indent and round platform recess bottom and is formed with the chamfer cutter 321 that is the chamfer awl piece of triangular pyramid form towards the one side of hexagon nut for the cutter can once only carry out outer peripheral face chamfer and hole chamfer to the nut blank.

Preferably, the tapping mechanism 33 includes a tap 331, a tap holding rotary base 332 that holds the tap 331 and is rotatable, and a tap 331 driving mechanism that drives the tap holding rotary base 332 toward the tapping and milling fixture 31. The screw tap 331 driving mechanism is an oil cylinder; the machining abutting table is provided with the screw tap 331 abdicating hole for the screw tap 331 to extend into, so that the machining abutting table is prevented from being damaged during machining, and the machining abutting table is more reasonable.

Preferably, the tapping and milling device 3 further comprises a finished product collection box 36 located below the tapping and milling fixture 31. More reasonable, and the packing of the finished nut is convenient.

Preferably, the gripping device 4 comprises a gripping robot 41. And is more intelligent.

Preferably, the numerical control bearing box body 5 is further provided for bearing the punching device 1, the milling device 2, the tapping and milling device 3 and the clamping device 4. The space utilization rate is improved.

The working principle is as follows: the pushing cylinder 132 pushes the nut blank to an outlet of the punching transportation rail 131, the nut blank passes through the high-temperature tunnel furnace 15, when the nut blank moves to the punching bearing table 111 after being calcined, the nut blank is clamped by the punching clamping block 112, the nut blank is punched by the punching tool 121, an inner hole is machined in the nut blank, the pushing cylinder 132 continues to push, and the machined nut blank is pushed into the nut placing groove 14; the clamping manipulator 41 clamps the nut blank in the nut placing groove 14, the nut blank is sleeved on the fixed column 211 and abuts against the abutting ring 21111, the ejection block 21122 ejects and clamps the nut blank, the first milling body 221 moves towards the fixed column 211, three edge surfaces of the nut blank are milled, the rotating disc 212 rotates 60 degrees, the first milling body 221 moves towards the fixed column 211 again, and the other three edge surfaces of the nut blank are milled; after the milling is finished, the clamping manipulator 41 clamps the nut blank to the tapping and milling clamping mechanism 31, the tapping and milling clamping body 311 clamps the nut blank, the chamfering tool 321 moves towards the nut blank, the nut blank returns after the chamfering is finished, the tapping and milling clamping moving seat 3112 extends out, the tapping and milling clamping rotating column 3113 drives the nut blank to turn over for 180 degrees, and the chamfering tool 321 repeats the actions; after chamfering, the oil cylinder drives the tapping mechanism 33 to move to a working position, the screw tap 331 moves towards the nut blank to tap, after chamfering, the tapping and milling clamping mechanism 31 is loosened, and the hexagon nut falls into the finished product collecting box 36.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A high-quality servo machining assembly line is characterized by comprising a punching device for punching a nut blank, a milling device for milling six edge surfaces of the nut blank, and a tapping and milling device for chamfering and then tapping the nut blank; and a clamping device for placing the nut blank on the punching device, the milling device or the tapping and milling device.

2. The high-quality servo machining assembly line of claim 1, wherein the milling device comprises a milling fixing and rotating mechanism for clamping and fixing and rotating the inner hole of the nut blank, and a milling mechanism for milling the fixed nut blank.

3. A high quality servo processing line as claimed in claim 2 wherein said milling mechanism comprises a first milling device for milling three non-adjacent lands of the nut blank.

4. A high quality servo processing line according to claim 3, wherein the milling mechanism comprises a milling carrier ring carrying the first milling device; the first milling equipment is connected to the inner side wall of the milling bearing ring in a sliding mode; the first milling device may be remote from or close to the milling fixture rotation mechanism.

5. A high quality servo process line according to claim 4, wherein the first milling apparatus comprises three first milling bodies spaced around the axis of the milling carrier ring on the inner side wall of the milling carrier ring.

6. A high quality servo processing line as claimed in claim 5, wherein the first milling body comprises a first milling moving base movable on the inner side wall of the milling carrier ring, a first milling connecting base connected with the first milling moving base at one end and with the first milling cutter at the other end, and a first milling cutter for processing the nut blank.

7. The high quality servo machining line of claim 6, wherein the first milling body further comprises a first milling extension mechanism that drives the first milling attachment base toward or away from the milling carrier ring axis.

8. A high quality servo process line according to claim 7, wherein the first milling extension mechanism comprises a first guide post formed on a face of the first milling moving seat facing the first milling connecting seat, a first guide hole formed on the first milling connecting seat and engaged with the first guide post, a first threaded hole forming the first milling connecting seat, and a first milling screw capable of driving the first milling connecting seat away from or close to the milling carrier ring.

9. The high-quality servo machining line according to claim 6, wherein the first milling body further comprises a first milling movement driving mechanism for driving the first milling connecting seat to move; the first milling movable driving mechanism comprises a first milling sliding groove and a first milling driving oil cylinder, wherein the first milling sliding groove is formed in the inner side wall of the milling bearing ring and can accommodate the first milling movable seat, and the first milling driving oil cylinder drives the first milling movable seat to move.

10. The high-quality servo machining line according to claim 9, wherein the first milling chute has first chute protrusions formed on two non-adjacent side walls, and the first connecting seat has first chute recesses formed therein for engaging with the first chute protrusions.