CN216066678U - Screw tap machining device - Google Patents

Abstract

The utility model relates to the technical field of screw tap manufacturing, in particular to a screw tap machining device which comprises a workbench, a hydraulic rotary table, a mechanical arm, a square grinding device, a groove grinding device, a thread grinding device, a relief grinding device and a fine grinding device, wherein the hydraulic rotary table is arranged in the center of the workbench. The screw tap rod grinding machine is reasonable and compact in structure and convenient to use, after the clamping jaw mechanism is connected with an air source or a hydraulic station, a screw tap rod is clamped through rotation of the mechanical arm and then is rotated to the first chuck component, the first chuck component clamps the screw tap rod and then rotates six times through the hydraulic rotary table, the screw tap rod rotates 60 degrees each time and sequentially passes through the square grinding device, the groove grinding device, the thread grinding device, the relief grinding device and the fine grinding device, and the screw tap rod is ground into a screw tap finished product after sequentially passing through the square grinding device, the rough grinding excircle, the grooving device, the grinding thread, the relief grinding head and the fine grinding excircle.

Description

Screw tap machining device

Technical Field

The utility model relates to the technical field of screw tap manufacturing, in particular to a screw tap machining device.

Background

At present, the processing equipment used in the tool processing industry is mainly domestic equipment with limited processing capacity of some procedures, and generally, the manufacture of one tool can be completed only by processing in a plurality of machine tools, so that the product cost is invisibly improved, and the processing precision of the tool is limited by clamping and processing for a plurality of times; the adoption of imported high-end equipment is high in cost, and the quality requirement on operators is high. The imported high-end equipment then meets this market demand by purchasing the medium-end domestic machine tools.

The material, shape and coating technology of the tools are subject to day-to-day variations, and even tool manufacturers have developed tools with specific geometrical parameters. This requires that the core manufacturing equipment of modern tools, namely, the numerical control tool grinder, not only have conventional grinding processing capability, but also have various capabilities such as pressure grinding and the like.

With the rapid development of modern manufacturing industry, customers must pursue high quality and high stability products. Meanwhile, some difficult-to-machine materials, such as special alloy materials, composite materials or a combination of the two, have been increasingly widely used in the new generation of products. This means that the manufacturers of machining tools have made more demands, and the development of tools will be greatly changed.

The patent document with the publication number of CN213438639U discloses a combined grinding machine for machining standard cutters simultaneously, which comprises a base, wherein a machining spindle body is arranged at the center of the top surface of the base, the machining spindle body is rotationally connected with the base, the machining spindle body comprises a plurality of side surfaces, each side surface is provided with a clamping part for clamping a workpiece, and the base is provided with cutting parts with different machining angles corresponding to the number of the side surfaces of the machining spindle body at the periphery of the machining spindle body; the machining main shaft body is rotated through the bottom to match different cutting parts to simultaneously machine the workpiece clamped in the cutting parts; a mechanical arm for switching the cut workpiece and the uncut workpiece is arranged on one side of the base; the machining spindle body switches different cutting processes of the workpiece clamped by each surface by rotating and switching different cutting parts, and each side surface is used as a switching interval according to the cutting time of the cutting part with the largest machining time length.

The patent document with the publication number of CN209681870U discloses a six-station rotary multifunctional full-automatic digital grinding machine device, which is provided with a frame assembly, the upper end of the frame assembly is provided with a rotary indexing assembly, and a plane grinding assembly, a left side chamfering assembly, a slotting assembly, an automatic feeding assembly, an automatic discharging assembly and a right side chamfering assembly are equally distributed on the central line of the rotary indexing assembly at an included angle of 60 degrees.

Patent document No. CN110977716A discloses a multi-station turret horizontal grinder, which comprises a working head, a grinding mechanism and a sand repairing mechanism; the working head comprises a working head base, a first DD motor and a working head assembly; the first DD motor is fixed above the working head base; the working head assembly is arranged above the first DD motor; the sand trimming mechanism is arranged on the right side of the working head in parallel; the polishing mechanism is arranged on the front side of the working head and the sand dressing mechanism and comprises an X-axis linear driving assembly, a Y-axis linear driving assembly, a second DD motor, a rotating plate, four groups of polishing assemblies and a probe; the Y-axis linear driving assembly is arranged at the power output end of the X-axis linear driving assembly; the second DD motor is arranged at the power output end of the Y-axis linear driving assembly; the rotating plate is arranged at a power output end above the second DD motor; the four groups of grinding assemblies are respectively arranged at four corners of the rotating plate; the probe is arranged on one side of the rotating plate.

At present, screw tap grinding equipment mainly adopts profile grinding of a hydraulic grinder, and has the defects of poor grinding precision, low production efficiency and the like. Although individual enterprises change the current hydraulic profiling into a numerical control mode, the mechanical manufacturing precision of the numerical control machine does not meet the use requirement, and the numerical control instruction only has a circular interpolation instruction of a two-axis linkage mode, the common numerical control instruction used on the right side of a common numerical control grinding machine cannot complete the machining of the surface of a cutter with a space curved surface and needing three-axis linkage, the machining mode can only be cutting in a two-axis linkage approximation mode, and the full-automatic streamlined operation cannot be realized, so that the production efficiency cannot be improved, and the product quality has many defects.

Traditional processing equipment, the process is single, the process is many, and processing is loaded down with trivial details, single unit operation, workman intensity of labour is big, the environment is abominable, the environmental protection requirement is not up to standard, need artifical manually operation, harm big to workman's health, the emery wheel is hindered the people easily, partial producer uses five-axis tool grinding machine processing, precision and operational environment are very improved, but have the multiple operation grinding, inefficiency, equipment productivity is lower, area is big, one process behind the processing of a process completion can be processed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw tap machining device, overcomes the defects of the right-hand prior art, and effectively solves the problems of screw tap machining sub-process and sub-machine bed operation, overlong product process flow and large equipment floor area of the conventional screw tap machining equipment.

The utility model further solves the problems of single process, complex processing, high labor intensity of workers, severe environment and substandard environmental protection requirement.

The technical scheme of the utility model is realized by the following measures: a screw tap machining device comprises a workbench, a hydraulic rotary table, mechanical arms, a square grinding device, a groove grinding device, a thread grinding device, a relief grinding device and a fine grinding device, wherein the hydraulic rotary table is arranged in the center of the workbench, first chuck components, second chuck components, third chuck components, fourth chuck components, fifth chuck components and sixth chuck components are uniformly distributed on the hydraulic rotary table at intervals along the anticlockwise direction, the first chuck components, the second chuck components, the third chuck components, the fourth chuck components, the fifth chuck components and the sixth chuck components are all used for clamping screw tap bars and driving the screw tap bars to rotate, the mechanical arms are arranged on the upper side of the left rear part of the workbench corresponding to the position of the first chuck components, clamping jaw mechanisms used for clamping the screw tap bars are fixedly mounted at the tail ends of the mechanical arms, the square grinding device used for grinding the tail ends of the screw tap bars and the outer sides of the coarse grinding screw tap bars is arranged on the upper side of the left front part of the workbench corresponding to the position of the second chuck components, the upper side of the front part of the workbench corresponding to the third chuck assembly position is provided with a groove grinding device for grooving the outer side of the screw tap bar, the upper side of the right front part of the workbench corresponding to the fourth chuck assembly position is provided with a thread grinding device for grinding threads on the outer side of the screw tap bar, the upper side of the right rear part of the workbench corresponding to the fifth chuck assembly position is provided with a relief grinding device for relief grinding the head part of the screw tap bar, and the upper side of the rear part of the workbench corresponding to the sixth chuck assembly position is provided with a fine grinding device for fine grinding the outer side of the screw tap bar.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the clamping jaw mechanism can comprise a cylinder body, a front piston rod, a rear piston rod and a gripper, the right side of the cylinder body is fixedly installed with the tail end of the mechanical arm, the left side of the cylinder body is provided with a front piston chamber and a rear piston chamber at intervals from front to back, the center of the left side of the cylinder body corresponding to the position between the front piston chamber and the rear piston chamber is fixedly provided with the gripper, the front side and the rear side of the left end of the gripper are respectively fixedly provided with a front finger and a rear finger, the front piston rod with the left end sealed and penetrating through the left part of the front piston chamber is coaxially arranged in the front piston chamber, the left end of the front piston rod is provided with a V-shaped first clamping groove with a left opening, a front clamping block with a V-shaped structure with a left opening is arranged in the first clamping groove, the center of the left side of the front clamping block is provided with a front connecting hole which is communicated from left to right, the inner wall of the first clamping groove corresponding to the position of the front connecting hole is provided with a front fixing screw hole, a front connecting bolt with the right end screwed in the front fixing screw hole is arranged in the front connecting hole, the outer side of the right end of the front piston rod is fixedly provided with a front piston ring with the outer side of the front piston ring which is in sealed and contacted with the inner wall of the front piston chamber in the right end of the front piston rod, the rear piston rod is coaxially arranged in the rear piston chamber, the left end of the rear piston rod penetrates through the left portion of the rear piston chamber in a sealing mode, a V-shaped second clamping groove with a left opening is formed in the left end of the rear piston rod, a rear clamping block with a left opening and a V-shaped structure is arranged in the second clamping groove, a rear connecting hole which is communicated with the left and right is formed in the center of the left side of the rear clamping block, a rear fixing screw hole is formed in the inner wall of the second clamping groove corresponding to the position of the rear connecting hole, a rear connecting bolt with the right end screwed in the rear fixing screw hole is arranged in the rear connecting hole, a rear piston ring which is in sealing contact with the inner wall of the rear piston chamber is fixed on the outer side of the right end of the rear piston rod, a front elastic reset piece is arranged between the outer side of the front piston rod corresponding to the position of the right side of the front piston ring and the left portion of the front piston chamber at the position of the left piston chamber at the position of the rear piston rod, and a rear elastic reset piece is arranged between the outer side of the rear piston rod corresponding to the left portion of the left piston ring and the left portion of the rear piston chamber at the rear piston chamber.

The front piston rod left part can be provided with a front limiting hole which is communicated with the front and the back, the front side of the left part of the cylinder body corresponding to the front limiting hole is provided with a front mounting hole which is communicated with the front and the back, the middle part of the front limiting pin is arranged in the front limiting hole in a penetrating mode, the front elastic reset piece is sleeved on the outer side of the front piston rod between the left side of the front piston ring and the right side of the front limiting pin, the left part of the back piston rod is provided with a rear limiting hole which is communicated with the rear end of the front mounting hole, the rear side of the left part of the cylinder body corresponding to the rear limiting hole is provided with a rear mounting hole, the middle part of the rear limiting pin is arranged in the rear limiting hole in a penetrating mode, and the rear elastic reset piece is sleeved on the outer side of the back piston rod between the left side of the back piston ring and the right side of the rear limiting pin.

The right side of the cylinder body corresponding to the position between the front piston chamber and the rear piston chamber can be provided with a front positioning hole and a rear positioning hole at intervals from front to back, the left end of the front positioning hole is communicated with the rear part of the front positioning hole, the left end of the rear positioning hole is communicated with the front part of the rear positioning hole, the rear part of the front limiting pin is uniformly provided with at least one front positioning groove with an outward opening at intervals along the circumference, a front positioning screw with the left end in contact with the bottom wall of one of the front positioning grooves is screwed in the front positioning hole, at least one rear positioning groove with an outward opening is uniformly distributed on the front part of the rear limiting pin along the circumference at intervals, and a rear positioning screw with the left end in contact with the bottom wall of one of the rear positioning grooves is screwed in the rear positioning hole.

The upper end of the hydraulic rotary table can be fixedly provided with a sealing cover with the upper end closed and the lower end opened, the upper end of the sealing cover is provided with an upper mounting through hole which is communicated up and down, the outer side of the middle part of the sealing cover is provided with a lower mounting through hole which corresponds to the first chuck component, the second chuck component, the third chuck component, the fourth chuck component, the fifth chuck component and the sixth chuck component, the structure of the first chuck component, the structure of the second chuck component, the structure of the third chuck component, the structure of the fourth chuck component, the structure of the fifth chuck component and the structure of the sixth chuck component are the same and are arranged in the lower mounting through holes at corresponding positions, the third chuck component comprises a chuck body, a tip, a chuck assembly, a main piston, an auxiliary piston and a driving device, the front part of the sealing cover is provided with the chuck body, the rear end of the chuck body is provided with a front-back communicated mounting channel, and the outer side of the tip is sleeved on the inner side of the front part of the chuck body, at least two guide holes which are radially communicated are uniformly distributed on the outer side of the rear part of the chuck body at intervals along the circumference, an auxiliary piston is hermetically and slidably arranged in each guide hole, a reset elastic sheet corresponding to the auxiliary piston is fixedly arranged on the outer side of the rear end of the chuck body, the outer side of the chuck body corresponding to the position of each reset elastic sheet is provided with a limiting groove with an outward opening, each limiting groove is internally provided with a clamping jaw assembly with the rear end tightly propped between the reset elastic sheet and the corresponding auxiliary piston, a main piston which can enable the front ends of all the clamping jaws to be far away from or close to each other when moving back and forth is hermetically and slidably arranged in the chuck body corresponding to the rear position of the center, a driving device which can enable the chuck body to rotate and the main piston to move back and forth is arranged at the upper side of the rear part of the hydraulic turntable corresponding to the rear position of the chuck body, a tailstock is fixedly arranged on the front side of the lower part of the sealing cover corresponding to the position below the chuck body, and a tail tip corresponding to the centre is fixedly arranged on the upper side of the front end of the tailstock corresponding to the position in front of the centre.

The clamping jaw component can comprise an adjusting jackscrew, a connecting plate and clamping jaws, wherein the outer side of the clamping chuck body corresponding to the position of each reset elastic sheet is provided with the connecting plate the front part of which is hinged and connected with the limiting groove at the corresponding position, the rear end of the connecting plate is provided with an adjusting threaded through hole, the adjusting threaded through hole is internally screwed with the adjusting jackscrew, the front part of the reset elastic sheet corresponding to the position of the adjusting jackscrew is provided with a first adjusting through hole, the inner end surface of the adjusting jackscrew is abutted against the outer end surface of the auxiliary piston at the corresponding position and the outer side of the rear end of the connecting plate is abutted against the inner side of the reset elastic sheet at the corresponding position, the front part of the connecting plate is hinged and connected with the clamping jaw with the front end positioned in front of the centre, the right side of the rear part of the clamping jaw is provided with a left-right through fan-shaped second adjusting through hole, the connecting plate corresponding to the position of the second adjusting through the screw rod end sequentially passes through the connecting through hole and is screwed with the adjusting bolt of the nut at the left of the second adjusting through hole, the front end of the claw is fixedly provided with a clamping block close to the outer side of the front end of the centre.

The outer side of the rear part of the chuck body can be uniformly provided with two guide holes which are symmetrically distributed up and down at intervals along the circumference, the front part of the main piston is provided with a first mounting hole which is penetrated up and down, a wedge block with the rear part protruding out of the outer side of the main piston is fixedly mounted in the first mounting hole, the outer side of the upper part and the outer side of the lower part of the wedge block corresponding to the outer side of the main piston are respectively provided with a first cambered surface which contracts from back to front from outside to inside, and the inner end surface of the auxiliary piston is provided with a second cambered surface matched with the first cambered surface.

The front portion of the wedge block can be provided with second mounting holes, the left end of each second mounting hole extends to the outer side of the right portion of the main piston, the outer side of the middle of each main piston is provided with a fixing ring groove, and the rear ends of the third mounting holes are connected with the second mounting holes.

The driving device can comprise a connecting assembly, a mandrel, a slip ring, a shaft seat and a driving mechanism, wherein the rear end of a main piston is fixedly provided with a piston ring, the outer side of the piston ring is in sealed contact with the inner wall at the rear part of the mounting channel, the rear side of a chuck body is fixedly and hermetically arranged with the front side of the connecting assembly, the rear end of the connecting assembly is fixedly and fixedly arranged with the front end of the mandrel of a hollow structure, the outer side of the middle part of the mandrel is rotatably provided with the slip ring, the outer side of the slip ring is rotatably provided with the shaft seat fixedly arranged with a sealing cover, the rear end of the mandrel corresponding to the rear position of the shaft seat is in transmission connection with the front end of an output shaft of the driving mechanism fixedly arranged at the upper side of the rear part of the hydraulic rotary table, the front and rear parts of the outer side of the slip ring are distributed with an air inlet outer ring groove and an air outlet outer ring groove at intervals, the inner side of the rear part of the slip ring is provided with an air outlet inner ring groove corresponding to the air outlet outer ring groove, at least one first sealing element is arranged between the outer side of the slip ring and the inner side of the shaft seat at intervals in front of the outer air inlet ring groove, between the outer air inlet ring groove and the outer air outlet ring groove and in front of the outer air outlet ring groove, at least one second sealing element is arranged between the inner side of the slip ring and the outer side of the mandrel at intervals in front of the inner air inlet ring groove, between the inner air inlet ring groove and the inner air outlet ring groove and in front of the inner air outlet ring groove, a first air inlet hole communicated with the outer air inlet ring groove is arranged on the outer side of the rear part of the shaft seat, at least one second air inlet hole communicated with the bottom wall of the inner air inlet ring groove is arranged on the bottom wall of the outer air inlet ring groove at intervals, a third air inlet hole with the outer air inlet ring groove is arranged in the mandrel, the other end of the third air inlet hole extends to the front end surface of the mandrel, a fourth air inlet hole with the rear end of the connecting component corresponding to the front end of the third air inlet hole is arranged on the rear side of the connecting component, the chuck body is internally provided with a fifth air inlet hole with one end corresponding to the front end of the fourth air inlet hole, the other end of the fifth air inlet hole is communicated with the inner wall of the installation channel in front of the piston ring, the outer side of the front part of the shaft seat is provided with a first air outlet hole communicated with the air outlet outer ring groove, the air outlet outer ring groove bottom wall is provided with at least one second air outlet hole communicated with the air outlet inner ring groove bottom wall at intervals, the mandrel is internally provided with a third air outlet hole with one end communicated with the air outlet outer ring groove, the other end of the third air outlet hole extends to the front end face of the mandrel, the rear side of the connecting assembly is provided with a fourth air outlet hole which is through from front to back and the rear end of which corresponds to the front end of the third air outlet hole, and the front end of the fourth air outlet hole is communicated with the installation channel behind the piston ring.

The connecting component can comprise a first guide post, a first cover plate and a second cover plate which are fixedly installed together in a sealing way, the rear end of the chuck body is fixedly installed with the front end of the first cover plate in a sealing way, at least one first guide groove with a forward opening is uniformly distributed at intervals along the circumference at the front end of the first cover plate corresponding to the position of the installation channel, a second guide groove with a backward opening is arranged at the rear end of the piston ring corresponding to each first guide groove, a first guide post with the front outer side sleeved in the corresponding second guide groove is fixedly installed in each first guide groove, a distance is arranged between the front end of each first guide post and the bottom wall of the corresponding second guide groove, the front end of the mandrel is fixedly installed with the rear end of the second cover plate, a fourth air inlet comprises a sixth air inlet and a seventh air inlet, a sixth air inlet which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front end of the third air inlet, the rear end of the first cover plate is provided with a seventh air inlet hole, one end of the seventh air inlet hole corresponds to the sixth air inlet hole, the other end of the seventh air inlet hole extends to the front end surface of the first cover plate close to the outer side, the fourth air outlet hole comprises a fifth air outlet hole and a sixth air outlet hole, a fifth air outlet hole which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front position of the third air outlet hole, a sixth air outlet hole which is communicated with the front and the back is arranged at the back side of the first cover plate corresponding to the fifth air outlet hole, a back bearing and a front bearing are respectively arranged at the outer side of the mandrel corresponding to the back and the front of the slip ring and the inner side of the shaft seat, a first end cover is fixedly arranged at the rear end of the shaft seat corresponding to the rear position of the rear bearing, a first locking nut screwed on the outer side of the rear part of the mandrel is hermetically arranged at the inner side of the first end cover, a second end cover is fixedly arranged at the front end of the shaft seat corresponding to the front position of the front bearing, and a second locking nut screwed on the outer side of the front part of the mandrel is arranged on the inner side of the second end cover in a sealing manner.

The installation channel corresponding to the front position of the mandrel can comprise a first straight hole section, a second straight hole section and a taper hole section which are sequentially communicated from back to front, the diameter of the first straight hole section is larger than that of the second straight hole section, the diameter of the second straight hole section is larger than that of the rear end of the taper hole section, the diameter of the rear end of the taper hole section is smaller than that of the front end of the taper hole section, the outer side of the rear part of the tip is a conical surface matched with the inner wall of the front part of the taper hole section, a floating piston is installed in the second straight hole section in a sealing mode, and a plurality of fourth installation holes communicated with the rear part of the taper hole section are evenly distributed at the outer side of the front part of the chuck body corresponding to the position between the front part of the tip rear part and the floating piston.

The square grinding device can comprise a square grinding driving mechanism, a square grinding wheel and a first cross sliding table, wherein the upper side of the left front part of the workbench is fixedly provided with the first cross sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the second chuck component, the upper end of the first cross sliding table is fixedly provided with the square grinding driving mechanism, the outer side of the output shaft end part of the square grinding driving mechanism is fixedly provided with the square grinding wheel of which the central axis is parallel to the central axis of the center of the second chuck component, the groove grinding device comprises a groove grinding driving mechanism, a groove grinding wheel and a first three-axis sliding table, the upper side of the front part of the workbench is fixedly provided with the first three-axis sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the third chuck component, the rear side of the upper part of the first cross sliding table is fixedly provided with the groove driving mechanism, the outer side of the output shaft end part of the groove driving mechanism is fixedly provided with the groove grinding wheel of which the central axis is vertical to the central axis of the center of the third chuck component, the thread grinding device comprises a thread grinding driving mechanism, a thread grinding wheel, a second cross sliding table and a first dividing disc, wherein the upper side of the right front part of the workbench is fixedly provided with the second cross sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the fourth chuck component, the upper side of the second cross sliding table is fixedly provided with the first dividing disc, the end surface of the first dividing disc is rotatably provided with the thread grinding driving mechanism, the outer side of the end part of an output shaft of the thread grinding driving mechanism is fixedly provided with the thread grinding wheel of which the central axis is parallel to the central axis of the center of the fourth chuck component, the relief grinding device comprises a relief grinding driving mechanism, a relief grinding wheel, a third cross sliding table and a second dividing disc, the upper side of the right rear part of the workbench is fixedly provided with the third cross sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the fifth chuck component, the upper side of the third cross sliding table is fixedly provided with the second dividing disc, and the end surface of the second dividing disc is rotatably provided with the relief grinding driving mechanism, the outer side of the end part of an output shaft of the relief grinding driving mechanism is fixedly provided with a relief grinding wheel with a central axis parallel to the central axis of the tip of the fifth chuck assembly, the fine grinding device comprises a fine grinding driving mechanism, a fine grinding wheel and a second three-axis sliding table, the upper side of the rear part of the workbench is fixedly provided with the second three-axis sliding table with an X axis or a Y axis perpendicular to the central axis of the tip of the sixth chuck assembly, the front side of the upper part of the second three-axis sliding table is fixedly provided with the fine grinding driving mechanism, and the outer side of the end part of the output shaft of the fine grinding driving mechanism is fixedly provided with the fine grinding wheel with a central axis perpendicular to the central axis of the tip of the sixth chuck assembly.

The screw tap rod grinding machine is reasonable and compact in structure and convenient to use, after the clamping jaw mechanism is connected with an air source or a hydraulic station, a screw tap rod is clamped through rotation of the mechanical arm and then is rotated to the first chuck component, the first chuck component clamps the screw tap rod and then rotates for six times through the hydraulic rotary table, the screw tap rod rotates for 60 degrees each time and sequentially passes through the square grinding device, the groove grinding device, the thread grinding device, the relief grinding device and the fine grinding device, and the screw tap rod is ground into a screw tap finished product after sequentially passing through the square grinding device, the rough grinding excircle, the grooving device, the grinding thread, the relief grinding head and the fine grinding excircle. The method has the characteristics of high productivity, small occupied area, simple processing and low labor intensity.

Drawings

Fig. 1 is a schematic front view of the preferred embodiment of the present invention.

Fig. 2 is a schematic perspective view of the preferred embodiment of the present invention.

FIG. 3 is a schematic top view of the preferred embodiment of the present invention with the sealing cap removed.

FIG. 4 is a right side sectional view of the chuck body according to the preferred embodiment of the present invention.

FIG. 5 is a top cross-sectional structural view of the chuck body in accordance with the preferred embodiment of the present invention.

Fig. 6 is a front view of the chuck body and jaw assembly in a preferred embodiment of the present invention.

FIG. 7 is a schematic perspective view of a chuck body according to a preferred embodiment of the present invention.

Fig. 8 is a schematic perspective view of a piston ring according to a preferred embodiment of the present invention.

FIG. 9 is a perspective view of a wedge in the preferred embodiment of the present invention.

Fig. 10 is a perspective view of the first cover plate according to the preferred embodiment of the present invention.

Fig. 11 is a rear sectional view of the first cover plate in the preferred embodiment of the present invention.

FIG. 12 is a schematic cross-sectional view taken along line A-A of FIG. 11.

Fig. 13 is a perspective view of a second cover plate according to the preferred embodiment of the present invention.

Fig. 14 is a perspective view of the axle seat, chuck body and jaw assembly of the preferred embodiment of the present invention.

Figure 15 is a front view schematic diagram of the jaw mechanism in a preferred embodiment of the present invention.

FIG. 16 is a schematic cross-sectional view taken at B-B in FIG. 15.

Figure 17 is a perspective view of the jaw mechanism in the preferred embodiment of the present invention.

FIG. 18 is a perspective view of a front locating pin in accordance with a preferred embodiment of the present invention.

The codes in the figures are respectively: 1 is a chuck body, 2 is a tip, 3 is a main piston, 4 is an auxiliary piston, 5 is a piston ring, 6 is a reset spring, 7 is a first cover plate, 8 is a second cover plate, 9 is a mandrel, 10 is a slip ring, 11 is a shaft seat, 13 is an adjusting bolt, 14 is a rear bearing, 15 is a front bearing, 16 is a first end cover, 17 is a second end cover, 18 is a first locking nut, 19 is a second locking nut, 20 is a locking ring, 21 is an adjusting jackscrew, 22 is a connecting plate, 23 is a clamping jaw, 24 is a wedge, 25 is a fixing pin, 26 is a fixing screw, 27 is a floating piston, 28 is a first sealing element, 29 is a second sealing element, 30 is an air inlet outer ring groove, 31 is an air inlet inner ring groove, 32 is an air outlet outer ring groove, 33 is an air outlet inner ring groove, 34 is a first air inlet hole, 35 is a second air inlet hole, 36 is a third air inlet hole, 37 is a fifth air inlet hole, 38 is a sixth air inlet hole, 39 is a seventh air inlet hole, 40 is a first outlet, 41 is a second outlet, 42 is a third outlet, 43 is a fifth outlet, 44 is a sixth outlet, 45 is a constant pressure outer ring groove, 46 is a constant pressure inner ring groove, 47 is a first constant pressure hole, 48 is a second constant pressure hole, 49 is a first adjusting through hole, 50 is a second adjusting through hole, 51 is a first straight hole section, 52 is a second straight hole section, 53 is a tapered hole section, 54 is a fourth mounting hole, 55 is a first arc surface, 56 is a second arc surface, 58 is a tail stock, 59 is a stopper, 60 is a stopper, 61 is a tail tip, 62 is a driving mechanism, 63 is a first guide groove, 64 is a second guide groove, 65 is a first guide post, 66 is an outer guide post, 67 is a cylinder, 68 is a front piston rod, 69 is a rear piston rod, 70 is a gripper, 71 is a front finger, 72 is a rear finger, 73 is a front piston ring, 74 is a rear piston ring, 75 is a forward air hole, 76 is a rear air hole, and 77 is a forward gripper block, 78 is a rear chuck block, 79 is a front elastic restoring member, 80 is a rear elastic restoring member, 81 is a front connecting bolt, 82 is a rear connecting bolt, 83 is a front end cover, 84 is a rear end cover, 85 is a front limit hole, 86 is a rear limit hole, 87 is a front limit pin, 88 is a rear limit pin, 89 is a front positioning groove, 90 is a fixing hole, 91 is a front positioning screw, 92 is a rear positioning screw, 93 is a seal cover, 94 is a workbench, 95 is a hydraulic turntable, 96 is a robot arm, 97 is a first chuck assembly, 98 is a second chuck assembly, 99 is a fourth chuck assembly, 100 is a fifth chuck assembly, 101 is a sixth chuck assembly, 102 is a first cross slide, 103 is a second cross slide, 104 is a third cross slide, 105 is a first third slide, 106 is a second third slide, 107 is a first index plate, 108 is a second index plate, 109 is a grinding square drive mechanism, 110 is a grinding groove drive mechanism, 111 is a screw grinding drive mechanism, 112 is a relief grinding drive mechanism, and 113 is a finish grinding drive mechanism.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The utility model is further described with reference to the following examples and figures:

as shown in fig. 1 to 18, the tap processing apparatus includes a worktable 94, a hydraulic turntable 95, a mechanical arm 96, a squaring device, a grooving device, a thread grinding device, a relief grinding device and a finish grinding device, the hydraulic turntable 95 is provided at the center of the worktable 94, a first chuck assembly 97, a second chuck assembly 98, a third chuck assembly 99, a fourth chuck assembly 99, a fifth chuck assembly 100 and a sixth chuck assembly 101 are uniformly distributed on the hydraulic turntable 95 at intervals along the counterclockwise direction, the first chuck assembly 97, the second chuck assembly 98, the third chuck assembly, the fourth chuck assembly 99, the fifth chuck assembly 100 and the sixth chuck assembly 101 are all used for clamping a tap bar and carrying out rotation thereof, the mechanical arm 96 is provided at the upper left rear side of the worktable 94 corresponding to the position of the first chuck assembly 97, a clamping jaw mechanism for clamping a tap is fixedly installed at the end of the mechanical arm 96, a clamping jaw mechanism for roughly grinding the tap bar and a rough grinding bar is provided at the upper left front end of the worktable 94 corresponding to the position of the second chuck assembly 98 The upper side of the front part of a workbench 94 corresponding to the position of a third chuck component is provided with a groove grinding device for grooving the outer side of the tap bar, the upper side of the right front part of the workbench 94 corresponding to the position of a fourth chuck component 99 is provided with a thread grinding device for grinding threads on the outer side of the tap bar, the upper side of the right rear part of the workbench 94 corresponding to the position of a fifth chuck component 100 is provided with a relief grinding device for relief grinding the head part of the tap bar, and the upper side of the rear part of the workbench 94 corresponding to the position of a sixth chuck component 101 is provided with a fine grinding device for fine grinding the outer side of the tap bar.

The robot arm 96 is a conventional robot, such as a five-axis, six-axis or seven-axis robot, the hydraulic turret 95 is a conventional robot, such as a 6-division HCT-series tooth-type hydraulic high-precision division rotary table, and the table 94 is a circular marble bed, as required. In the use process, after the clamping jaw mechanism is connected with an air source or a hydraulic station, a screw tap bar is clamped through rotation of the mechanical arm 96 and then rotates to the first chuck assembly 97, the first chuck assembly 97 rotates six times through the hydraulic rotary table 95 after clamping the screw tap bar, the screw tap bar rotates 60 degrees each time and sequentially passes through the square grinding device, the groove grinding device, the thread grinding device, the relief grinding device and the fine grinding device, and the screw tap bar is sequentially ground into a screw tap finished product after passing through the square grinding device, the rough grinding excircle, the grooving, the grinding thread, the relief grinding head and the fine grinding excircle. The utility model has the characteristics of reasonable and compact structure, convenient use, high productivity, small occupied area, simple processing and low labor intensity.

The tap processing device can be further optimized or/and improved according to actual needs:

as shown in fig. 1, 2, 3, 15, 16, 17, the gripper mechanism includes a cylinder 67, a front piston rod 68, a rear piston rod 69 and a gripper 70, the right side of the cylinder 67 is fixedly mounted to the end of a robot arm 96, the left side of the cylinder 67 is provided with a front piston chamber and a rear piston chamber at intervals from front to rear, the left center of the cylinder 67 corresponding to the position between the front piston chamber and the rear piston chamber is fixed with the gripper 70, the front side and the rear side of the left end of the gripper 70 are respectively fixed with a front finger 71 and a rear finger 72, the front piston chamber is coaxially provided with the front piston rod 68 whose left end passes through the left part of the front piston chamber, the left end of the front piston rod 68 is provided with a V-shaped first gripper slot with a leftward opening, the first gripper slot is provided with a V-shaped structure with a leftward opening 77, the left center of the left side of the front gripper 77 is provided with a left-right through front connection hole, the inner wall of the first gripper slot corresponding to the position is provided with a front connection screw hole, the front connection bolt 81 whose right end is screwed into the front connection hole, a front piston ring 73 with the outer side in sealing contact with the inner wall of the front piston chamber is fixed on the outer side of the right end of the front piston rod 68, a rear piston rod 69 with the left end passing through the left part of the rear piston chamber in a sealing way is coaxially arranged in the rear piston chamber, a V-shaped second clamping groove with the left opening is arranged at the left end of the rear piston rod 69, a rear clamping block 78 with the left opening and a V-shaped structure is arranged in the second clamping groove, a rear connecting hole with the left opening is arranged at the left center of the left side of the rear clamping block 78, a rear fixing screw hole is arranged on the inner wall of the second clamping groove corresponding to the position of the rear connecting hole, a rear connecting bolt 82 with the right end screwed in the rear fixing screw hole is arranged in the rear connecting hole, a rear piston ring 74 with the outer side in sealing contact with the inner wall of the rear piston chamber is fixed on the outer side of the right end of the rear piston rod 69, a front air hole 75 and a rear air hole 76 which are respectively communicated with the front piston chamber at the right side of the front piston ring 73 and the rear piston chamber at the right side of the rear piston ring 74 are arranged at intervals on the outer side of the right side of the cylinder 67, a front elastic return member 79 is provided between the outer side of the front piston rod 68 corresponding to the left side position of the front piston ring 73 and the left portion of the front piston chamber, and a rear elastic return member 80 is provided between the outer side of the rear piston rod 69 corresponding to the left side position of the rear piston ring 74 and the left portion of the rear piston chamber.

According to requirements, the left side of the front end of the front finger 71 and the left side of the rear end of the rear finger 72 are both provided with a chamfer structure, and in the use process, the front finger 71 and the rear finger 72 can play a role in guiding when inserted into a screw tap bar to be grasped, so that collision between the screw tap bar and the positioning deviation is prevented, and the reliability of the screw tap bar positioning device is improved, the left side of the cylinder body 67 corresponding to the position of a front piston chamber is fixedly provided with a front end cover 83, the center of the front end cover 83 is provided with a front piston hole which is communicated with the left and the right, the outer side of the left part of the front piston rod 68 is hermetically sleeved in the front piston hole, the left side of the cylinder body 67 corresponding to the position of a rear piston chamber is fixedly provided with a rear end cover 84, the center of the rear end cover 84 is provided with a rear piston hole which is communicated with the left and the right, the outer side of the left end of the rear piston rod 69 is hermetically sleeved in the rear piston hole, and O-type sealing rings are arranged between the inner wall of the front piston hole and the outer side of the front piston rod 68 and between the inner wall of the rear piston rod 69, two O-shaped sealing rings are arranged between the outer side of the front piston ring 73 and the inner wall of the front piston chamber at a left-right interval, a sealing ring is arranged between the two O-shaped sealing rings, two O-shaped sealing rings are arranged between the outer side of the rear piston ring 74 and the inner wall of the rear piston chamber at a left-right interval, a sealing ring is also arranged between the two O-shaped sealing rings, intervals are arranged between the left end of the front piston rod 68 and the right side of the front finger 71 and between the left end of the rear piston rod 69 and the right side of the rear finger 72, the front air hole 75 and the rear air hole 76 are both connected with the existing air source, and the front elastic reset piece 79 and the rear elastic reset piece 80 are both in the prior art, for example, the first clamping groove and the second clamping groove may be arc-shaped with the opening facing left, the front piston rod 68 and the front piston ring 73 may be integrally arranged, the rear piston rod 69 and the rear piston ring 74 may be integrally arranged, and the front connecting hole and the rear connecting hole are stepped holes with the small right and the large left. In the using process, by arranging the first clamping groove and the second clamping groove, the front piston rod 68 and the rear piston rod 69 extend leftwards and then respectively clamp a screw tap bar or a finished product with the front finger 71 and the rear finger 72, then rotate to the processing station for installation, through two clamping stations formed by the front piston rod 68, the front finger 71, the rear piston rod 69 and the rear finger 72, the screw tap bar is conveniently clamped and replaced with a subsequent processed finished product, then the processed finished product is retracted and placed in a tray, and the left screw tap bar to be processed is clamped, so that the time for clamping the screw tap bar and storing the finished product is shortened, the processing beat is compact, the clamping times are reduced, the clamping failure caused by positioning errors in the clamping process is reduced, the failure rate is reduced, the reliability in the using process is improved, the front elastic resetting piece 79 and the rear elastic resetting piece 80 are arranged, can make and keep having the normality of interval between piston rod and the finger, the snatching of the screw tap bar of being convenient for, clamp splice 77 and back clamp splice 78 before through setting up, can change different preceding clamp splice 77 and back clamp splice 78 according to the specification of screw tap bar, shorten the change time of different specification screw tap bar anchor clamps, improve production efficiency, can also increase the area of contact of screw tap bar simultaneously for the clamp is got the process and is more reliable.

As shown in fig. 1, 2, 3, 15, 16 and 17, a front limiting hole 85 is formed in the left portion of the front piston rod 68 and penetrates through the front and rear portions, a front mounting hole is formed in the front portion of the left portion of the cylinder 67 corresponding to the position of the front limiting hole 85 and penetrates through the front and rear portions, a front limiting pin 87 is fixedly mounted in the front mounting hole and penetrates through the front limiting hole 85 in the middle portion, a front elastic reset piece 79 is sleeved on the outer side of the front piston rod 68 between the left side of the front piston ring 73 and the right side of the front limiting pin 87, a rear limiting hole 86 is formed in the left portion of the rear piston rod 69 and penetrates through the front and rear portions, a rear mounting hole is formed in the rear portion of the left portion of the cylinder 67 corresponding to the position of the rear limiting hole 86 and penetrates through the rear end of the front mounting hole, a rear limiting pin 88 is fixedly mounted in the rear mounting hole and penetrates through the middle portion of the rear limiting hole 86, and a rear elastic reset piece 80 is sleeved on the outer side of the rear piston rod 69 between the left side of the rear piston ring 74 and the right side of the rear limiting pin 88.

In the use process, the limiting holes and the limiting pins are arranged to prevent the piston rods from rotating, and the front piston rods 68 and the rear piston rods 69 can be guided and supported in the left-right stretching process, and meanwhile, the left ends of the front elastic resetting pieces 79 and the rear elastic resetting pieces 80 are respectively spaced from the right sides of the front end cover 83 and the rear end cover 84 due to the arrangement of the limiting pins, so that the front elastic resetting pieces 79 and the rear elastic resetting pieces 80 are prevented from contacting and scratching the outer walls of the front piston rods 68 and the rear piston rods 69 in the compression process, the sealing performance between the front piston rods 68 and the front end cover 83 and between the rear piston rods 69 and the rear end cover 84 is reduced, and the service life of the utility model is prolonged.

As shown in fig. 1, 2, 3, 17 and 18, a front positioning hole and a rear positioning hole are arranged on the right side of the cylinder 67 corresponding to the position between the front piston chamber and the rear piston chamber at intervals from front to back, the left end of the front positioning hole is communicated with the rear part of the front limiting hole 85, the left end of the rear positioning hole is communicated with the front part of the rear limiting hole 86, at least one front positioning groove 89 with an outward opening is circumferentially and uniformly distributed on the rear part of the front limiting pin 87 at intervals, a front positioning screw 91 with the left end contacting with the bottom wall of one front positioning groove 89 is screwed in the front positioning hole, at least one rear positioning groove with an outward opening is circumferentially and uniformly distributed on the front part of the rear limiting pin 88, and a rear positioning screw 92 with the left end contacting with the bottom wall of one rear positioning groove is screwed in the rear positioning hole.

In this embodiment, the number of the front positioning grooves 89 and the number of the rear positioning grooves are both two and are distributed in bilateral symmetry. In the use, through setting up preceding set screw 91 and back set screw 92, can play the positioning action to preceding spacer pin 87 and back spacer pin 88, prevent that elasticity from restoring to the throne the piece after a lot of effects, preceding spacer pin 87 and back spacer pin 88 take place to lose the phenomenon, and then make preceding piston rod 68 or back piston rod 69 not reset, influence subsequent clamp and get and the blowing operation, the dismouting of preceding spacer pin and back spacer pin 88 of still being convenient for of such setting simultaneously.

As shown in fig. 1 to 14, a sealing cover 93 with a closed upper end and an open lower end is fixedly mounted at the upper end of the hydraulic rotating table 95, an upper mounting through hole which is through up and down is arranged at the upper end of the sealing cover 93, lower mounting through holes corresponding to a first chuck component 97, a second chuck component 98, a third chuck component, a fourth chuck component 99, a fifth chuck component 100 and a sixth chuck 101 are arranged at the outer side of the middle part of the sealing cover 93, the structure of the first chuck component 97, the structure of the second chuck component 98, the structure of the third chuck component, the structure of the fourth chuck component 99, the structure of the fifth chuck component 100 and the structure of the sixth chuck component 101 are all the same and are mounted in the lower mounting through holes at corresponding positions, the third chuck component comprises a chuck body 1, a tip 2, a chuck component, a chuck jaw component, a main piston 3, an auxiliary piston 4 and a driving device, the sealing cover 93 is provided with a chuck body 1, a front mounting channel which is through back and forth is arranged at the rear end of the chuck body 1, the outer side of the rear part of the centre 2 is sleeved on the inner side of the front part of the chuck body 1, at least two guide holes which are radially communicated are uniformly distributed on the outer side of the rear part of the chuck body 1 at intervals along the circumference, an auxiliary piston 4 is hermetically and slidably arranged in each guide hole, a reset spring plate 6 corresponding to the auxiliary piston 4 is fixedly arranged on the outer side of the rear part of the chuck body 1, the outer side of the chuck body 1 corresponding to each reset spring plate 6 is provided with a limiting groove 59 with an outward opening, a jaw assembly with the rear end tightly propped against between the reset spring plate 6 and the corresponding auxiliary piston 4 is arranged in each limiting groove 59, a main piston 3 which can enable the front ends of all jaws 23 to be far away from or close to each other when moving back and forth is hermetically and slidably arranged in the chuck body 1 corresponding to the rear part of the centre 2, and a driving device which can enable the chuck body 1 to rotate and the main piston 3 to move back and forth is arranged on the upper side of the front part of a hydraulic rotary table 95 corresponding to the rear part of the chuck body 1, a tailstock 58 is fixedly arranged on the front side of the lower part of the sealing cover 93 corresponding to the position below the chuck body 1, and a tail tip 61 corresponding to the centre 2 is fixedly arranged on the upper side of the front end of the tailstock 58 corresponding to the position in front of the centre 2.

The finial 2 is known in the art according to requirements. In the using process, the screw tap bar stock clamping device is rotated to be matched with processing equipment to process the screw tap bar stock, the driving device drives the main piston 3 to move backwards, so that the inner side of the rear end of the jaw component pushes the auxiliary piston 4 into the guide hole, the opening between the front ends of all the jaw components is increased, one end of the screw tap bar stock is put in, meanwhile, the center of the rear end of the screw tap bar stock is abutted against the front end of the tip 2, the tip 2 plays a centering role in the screw tap bar stock, the main piston 3 moves forwards by controlling the driving device on the left side, the main piston 3 pushes the auxiliary piston 4 out of the guide hole, the outer end of the auxiliary piston 4 is abutted against the inner side of the rear end of the jaw component, the opening at the front end of the jaw component is further reduced, the screw tap bar stock is clamped on the left side, each jaw component is hinged to the outer side of the chuck body 1, so that the front end of the jaw component can float according to different specifications or processing errors of the outer surfaces of the screw tap bar stock in the clamping process, finally, the screw tap bar is clamped under the action of the reset elastic sheet 6, so that the clamping position can be automatically adjusted, the over-positioning phenomenon of the jaw assembly is avoided, the high-precision clamping and positioning function of the screw tap bar is realized, the left-hand processing or secondary clamping is facilitated, the collision and clamping time in the clamping process can be reduced, the deviation of the connecting plate 22 in the process of rotating along with the chuck body and the loosening of the screw tap bar can be avoided by arranging the limiting groove 59, the stability in use of the screw tap bar clamping device is enhanced, the failure rate is reduced, the installation and adjustment of the jaw assembly are facilitated, the screw tap bar can be sequentially clamped in multiple processes by arranging the hydraulic rotary table 95 and the tail tip 61, the reduction of the processing quality of the screw tap bar by repeated positioning and positioning errors in the multiple clamping processes is avoided, and the feeding mechanism capable of moving left and right back and forth is arranged by arranging the feeding mechanism, and then the grinding square grinding wheel 70 grinds the outer wall of the screw tap rod clamped between the tail tip 61 and the jaw assembly, the ratio of the rotating speed of the chuck body 1 to the rotating speed of the output shaft of the grinding square driving motor 71 is constant by controlling the driving device and the grinding square driving motor 71, the grinding square driving motor 71 is moved left and right by matching with a feeding mechanism, and the outer side of the tail end of the screw tap rod is ground in equal parts, so that the screw tap square tail with four sides, six sides and eight sides is ground, and the screw tap square tail is convenient to clamp in batch processing. The utility model has the characteristics of reasonable and compact structure, convenient use, high clamping precision, accurate positioning, stability and high efficiency.

As shown in the attached figures 1, 2, 3, 4, 6 and 14, the jaw assembly comprises an adjusting jackscrew 21, a connecting plate 22 and jaws 23, the outer side of the chuck body 1 corresponding to each reset spring 6 is provided with the connecting plate 22 with the front part hinged and connected with the limiting groove 59 at the corresponding position, the rear end of the connecting plate 22 is provided with an adjusting threaded through hole, the adjusting threaded through hole is internally threaded with the adjusting jackscrew 21, the front part of the reset spring 6 corresponding to the position of the adjusting jackscrew 21 is provided with a first adjusting through hole 49, the inner end surface of the adjusting jackscrew 21 is abutted against the outer end surface of the auxiliary piston 4 at the corresponding position and the outer side of the rear end of the connecting plate 22 is abutted against the inner side of the reset spring 6 at the corresponding position, the front part of the connecting plate 22 is hinged and connected with the jaws 23 with the front end positioned in front of the centre 2, the right side of the rear part of the jaws 23 is provided with a fan-shaped second adjusting through hole 50 which is penetrated left and right, the connecting through hole is arranged on the connecting plate 22 corresponding to the second adjusting through hole 50, the connecting plate 22 is installed together by a screw rod end passing through the connecting through hole and the adjusting bolt 13 with a nut screwed on the left of the second adjusting through hole 50, and a clamping block 60 close to the outer side of the front end of the tip 2 is fixed at the front end of the clamping jaw 23.

The adjustment jack 21 is known in the art, as required, and the central axis of the second adjustment through hole 50 is collinear with the hinge axis of the jaw 23. The driving device drives the main piston 3 to move backwards, so that the auxiliary piston 4 is pushed into the guide hole by the inner side of the rear end of each jaw 23, the opening between the front ends of all the jaws 23 is enlarged, one end of a screw tap bar material is put into the guide hole, meanwhile, the center of the rear end of the screw tap bar material is abutted against the front end of the center 2, the center 2 plays a centering role in centering the screw tap bar material, the main piston 3 is moved forwards by the left control driving device, the main piston 3 pushes the auxiliary piston 4 out of the guide hole, the outer end of the auxiliary piston 4 is abutted against the inner side of the rear end of each jaw 23, the opening of the front end of each jaw 23 is reduced, the left clamping screw tap bar material is clamped, the adjusting jackscrew 21 is arranged, the length of the jackscrew 21 extending out of the adjusting threaded through hole can be adjusted according to the specifications of the reset elastic sheet 6 and the screw tap bar material, the clamping of the jaws 23 on the screw tap bar materials of different specifications is realized, and the application range is increased. The front end of the clamping jaw 23 is fixedly provided with a clamping block 60 close to the outer side of the front end of the tip 2, the clamping block 60 is provided with a groove matched with a screw tap bar, the clamping degree is improved, the jackscrew 21 can be quickly adjusted and adjusted through the arrangement of the first adjusting through hole 49, the adjustment is convenient and quick, the opening size of the front end of all the clamping jaws 23 can be adjusted through the arrangement of the second adjusting through hole 50 in a sector ring shape, so that machined workpieces of different specifications can be clamped conveniently, and the application range of the utility model is enlarged.

As shown in fig. 1, 2, 3, 4, 5, 9, and 12, two guide holes are uniformly distributed at intervals along the circumference at the outer side of the rear portion of the chuck body 1, a first mounting hole is formed at the front portion of the main piston 3, a wedge block 24 is fixedly mounted in the first mounting hole, the rear portion of the wedge block 24 protrudes out of the outer side of the main piston 3, first arc surfaces 55 which contract from the rear portion to the front portion from the outside to the inside are respectively formed at the outer sides of the upper portion and the lower portion of the wedge block 24 corresponding to the outer side of the main piston 3, and a second arc surface 56 which is matched with the first arc surface 55 is formed at the inner end surface of the auxiliary piston 4.

In the use process, the wedge block 24 is arranged, the processing of the first cambered surface 55 is facilitated, the opening size of the jaw 23 can be rapidly adjusted according to the specification of the screw tap bar, the second cambered surface 56 is arranged, the auxiliary piston 4 can slowly extend or retract, the damage or the service life shortening of the reset elastic sheet 6 caused by impact can be avoided, the maintenance cost is increased, meanwhile, the arrangement of the first cambered surface 55 and the second cambered surface 56 can enable the jaw 23 to slowly clamp the screw tap bar, the surface of the screw tap bar can be prevented from being damaged by clamping, the clamping process can be more accurate, as each connecting plate 22 is hinged and connected to the outer side of the chuck body 1, the floating phenomenon can occur at the front end of the connecting plate 22 in the clamping process due to the inconsistent stress of the jaws 23 on the two sides, meanwhile, the center of the rear end of the screw tap bar can be abutted against the front end of the screw tap bar 2 when the jaw 23 clamps the screw tap bar, so that the center of the screw tap bar 2 is centered, like this can automatic adjustment clamping position's jack catch subassembly avoid crossing the location phenomenon, realize the high accuracy clamping locate function of screw tap bar, through setting up first cambered surface 55 and second cambered surface 56, voussoir 24 and vice piston 4 can play limiting displacement along with the chuck body 1 pivoted in-process, prevent that voussoir 24 and vice piston 4 rotate relatively and take place the dislocation, the effect is got to the influence clamp.

As shown in fig. 1, 2, 3, 4, 5, 9, and 12, the front portion of the wedge block 24 is provided with a second mounting hole whose left and right ends respectively extend to the right and left outer sides of the main piston 3, the front end of the main piston 3 is provided with a third mounting hole whose rear end is communicated with the second mounting hole, a fixing pin 25 is mounted in the second mounting hole, the outer side of the middle portion of the fixing pin 25 is provided with a fixing ring groove, and the third mounting hole is screwed with a fixing screw 26 whose rear end is clamped in the fixing ring groove.

According to the demand, the third mounting hole is forward and backward setting. In the using process, the fixing screws 26 are arranged, so that the fixing pins 25 are conveniently positioned, the fixing pins 25 are prevented from moving left and right and rubbing the inner wall of the mounting channel to influence the front and back movement of the main piston 3, and then the clamping action of the clamping jaws 23 is influenced, each first cambered surface 55 can be matched with the second cambered surface 56 at the corresponding position through the arrangement of the fixing pins 25, and the clamping precision of the clamping jaws 23 is improved.

As shown in fig. 1 to 5 and fig. 7 to 14, the driving device includes a connecting assembly, a mandrel 9, a slip ring 10, a shaft seat 11 and a driving mechanism 62, a piston ring 5 whose outer side is in sealing contact with the inner wall of the rear portion of the installation channel is fixed at the rear end of the main piston 3, the rear side of the chuck body 1 is fixedly and hermetically mounted with the front side of the connecting assembly, the rear end of the connecting assembly is fixedly mounted with the front end of the mandrel 9 with a hollow structure, the slip ring 10 is rotatably mounted at the outer side of the middle portion of the mandrel 9, the shaft seat 11 is rotatably mounted at the outer side of the slip ring 10 and fixedly mounted with a sealing cover, the rear end of the mandrel 9 corresponding to the rear position of the shaft seat 11 is in transmission connection with the front end of the output shaft of the driving mechanism 62 fixedly mounted at the upper side of the rear portion of the hydraulic turntable 95, the shaft seat 11 is rotatably mounted at the outer side of the slip ring 10, an air inlet outer ring groove 30 and an air outlet outer ring groove 32 are spaced from the front to the rear portion of the outer ring 10, an air inlet inner ring groove 31 corresponding to the air inlet outer ring groove 30 is provided at the inner side of the rear portion of the slip ring 10, an air outlet inner ring groove 33 corresponding to the air outlet outer ring groove 32 is arranged on the inner side of the front part of the sliding ring 10, at least one first sealing element 28 is arranged between the outer side of the sliding ring 10 and the inner side of the shaft seat 11 at intervals in the front-back direction corresponding to the rear part of the air inlet outer ring groove 30, between the air inlet outer ring groove 30 and the air outlet outer ring groove 32 and in the front part of the air outlet outer ring groove 32, at least one second sealing element 29 is arranged between the inner side of the sliding ring 10 and the outer side of the shaft seat 9 at intervals in the front-back direction corresponding to the rear part of the air inlet inner ring groove 31, between the air inlet inner ring groove 31 and the air outlet inner ring groove 33 and in the front part of the air outlet inner ring groove 33, at least one first air inlet 34 communicated with the air inlet outer ring groove 30 is arranged on the outer side of the bottom wall of the air inlet outer ring groove 30 at intervals, at least one second air inlet 35 communicated with the bottom wall of the air inlet inner ring groove 31 is arranged in the shaft seat 9, a third air inlet 36 communicated with the air inlet outer ring groove 30 is arranged in the shaft 9, and the other end of the third air inlet 36 extends to the front end surface of the shaft seat 9, the rear side of the connecting assembly is provided with a fourth air inlet hole with the rear end corresponding to the front end of the third air inlet hole 36, the other end of the fourth air inlet hole extends to the front end face of the connecting assembly close to the outer side, a fifth air inlet hole 37 with one end corresponding to the front end of the fourth air inlet hole is arranged in the chuck body 1, the other end of the fifth air inlet hole 37 is communicated with the inner wall of the mounting channel in front of the piston ring 5, the outer side of the front part of the shaft seat 11 is provided with a first air outlet hole 40 communicated with the air outlet outer annular groove 32, the bottom wall of the air outlet outer annular groove 32 is provided with at least one second air outlet hole 41 communicated with the bottom wall of the air outlet inner annular groove 33 at intervals, the mandrel 9 is provided with a third air outlet hole 42 with one end communicated with the air outlet outer annular groove 32, the other end of the third air outlet hole 42 extends to the front end face of the mandrel 9, the rear side of the connecting assembly is provided with a fourth air outlet hole with the mounting channel in front and back of the piston ring 5.

According to the requirement, the rear end of the mandrel 9 is positioned behind the shaft seat 11, the driving mechanism 62 is a servo motor which is well known in the prior art, and the number of the second air inlet holes 35 and the number of the second air outlet holes 41 are both one first sealing element 28 and one second sealing element 29 which are well known in the prior art, such as O-shaped sealing rings. In the use process, through the arrangement of the air inlet hole and the air outlet hole, a left gas or liquid medium is injected into the first air outlet hole 40, the rear end face of the piston ring 5 can be pushed and pressed to move forwards, then the main piston 3 is driven to move forwards, and the main piston 3 ejects the auxiliary piston 4 out to enable the front end of the jaw assembly to be close to a left clamping screw tap bar; inject into gas or liquid medium left in 34 to first inlet port, can bulldoze piston ring 5 preceding terminal surface, make its rearward movement, drive main piston 3 rearward movement then, the shell fragment 6 that resets makes jack catch subassembly front end keep away from each other and loosen the screw tap bar, through the setting of sliding ring 10, can axle bed 11, dabber 9 and chuck body 1 do not influence the intercommunication of inlet port and venthole at rotatory in-process, be convenient for control main piston 3's back-and-forth movement, the controllability is good.

As shown in fig. 4, 5, 10, 11, 12, 13, and 14, the connecting assembly includes a first guide post 65, a first cover plate 7 and a second cover plate 8, which are fixedly and hermetically mounted together, the rear end of the chuck body 1 is fixedly and hermetically mounted with the front end of the first cover plate 7, at least one first guide groove 63 with a forward opening is circumferentially and uniformly distributed at intervals at the front end of the first cover plate 7 corresponding to the installation channel position, a second guide groove 64 with a backward opening is provided at the rear end of the piston ring 5 corresponding to each first guide groove 63, a first guide post 65 with a front outer side sleeved in the corresponding second guide groove 64 is fixedly mounted in each first guide groove 63, a gap is provided between the front end of each first guide post 65 and the bottom wall of the corresponding second guide groove 64, the front end of the mandrel 9 is fixedly and hermetically mounted with the rear end of the second cover plate 8, the fourth air inlet hole includes a sixth air inlet hole 38 and a seventh air inlet hole 39, a sixth air inlet hole 38 which is through from front to back is arranged at the rear side of the second cover plate 8 corresponding to the front end position of the third air inlet hole 36, a seventh air inlet hole 39 with one end corresponding to the sixth air inlet hole 38 and the other end extending to the front end surface of the first cover plate 7 near the outer side is arranged at the rear end of the first cover plate 7, the fourth air outlet hole comprises a fifth air outlet hole 43 and a sixth air outlet hole 44, a fifth air outlet hole 43 which is through from front to back is arranged at the rear side of the second cover plate 8 corresponding to the front end position of the third air outlet hole 42, a sixth air outlet hole 44 which is through from front to back is arranged at the rear side of the first cover plate 7 corresponding to the position of the fifth air outlet hole 43, a rear bearing 14 and a front bearing 15 are respectively arranged at the outer side of the mandrel 9 corresponding to the rear and the front of the slip ring 10 and the inner side of the mandrel base 11, a first end cover 16 is fixedly arranged at the rear end of the shaft base 11 corresponding to the rear position of the rear bearing 14, a first locking nut 18 which is in a sealing and screwed with the outer side of the mandrel 9, a second end cover 17 is fixedly arranged at the front end of the shaft seat 11 corresponding to the front position of the front bearing 15, and a second locking nut 19 screwed on the outer side of the front part of the mandrel 9 is hermetically arranged on the inner side of the second end cover 17.

According to the requirement, a space is arranged between the rear end of the piston ring 5 and the front end of the first cover plate 7, the sixth air outlet hole 44 is communicated with the installation channel behind the piston ring 5, the rear bearing 14 is the prior known technology, such as a double-row deep groove ball bearing, the front bearing 15 is the prior known technology, such as a double-row tapered roller bearing, and the inner side of the first end cover 16 and the first locking nut 18 and the inner side of the second end cover 17 and the second locking nut 19 are hermetically installed through the prior known framework oil seals. In the use process, the first cover plate 7 is arranged to facilitate the arrangement of the seventh air inlet 39, the seventh air inlet 39 can be arranged in a Z shape, the radial section of the seventh air inlet 39 can extend to the outer side of the first cover plate 7 for facilitating processing, the outer side of the first cover plate 7 is provided with a sealing screw plug which is fixedly arranged in the radial section of the seventh air inlet 39 in a sealing way, the gas or liquid injected into the first air inlet 34 on the shaft seat 11 can be introduced to the front side of the piston ring 5 through the arrangement, the piston ring 5 is further pushed to move backwards, the arrangement of the first cover plate 7 and the second cover plate 8 facilitates the sealing connection between the mandrel 9 and the chuck body 1 and the installation of the main piston 3, the sealing performance between the mandrel 9 and the connecting piece thereof during rotation can be improved through the arrangement, the piston ring 5 and the chuck body 1 synchronously rotate through the arrangement of the first guide column 65, meanwhile, the straightness of the piston ring 5 during moving back and forth can be guaranteed, the control is more accurate, and the clamping action is more accurate. The first guide post 65 may also be a spring, increasing the pressurization of the high pressure gas, providing a double protection effect, preventing the piston ring 5 from moving too fast to impact the chuck body 1. In the specific actual installation, according to the thrust requirement of difference, can increase or reduce the quantity of spring, but the thrust spring mounting hole does not reduce, and the hole that adds out is used as the gas storage chamber, has increased thrust spring intracavity gas storage volume, makes clamping-force increase volume further reduce.

As shown in fig. 4, 5, 7 and 12, the mounting channel corresponding to the front position of the mandrel 9 includes a first straight hole section 51, a second straight hole section 52 and a tapered hole section 53 which are sequentially communicated from back to front, the diameter of the first straight hole section 51 is greater than that of the second straight hole section 52, the diameter of the second straight hole section 52 is greater than that of the rear end of the tapered hole section 53, the diameter of the rear end of the tapered hole section 53 is less than that of the front end of the tapered hole section 53, the outer side of the rear part of the center 2 is a tapered surface matched with the inner wall of the front part of the tapered hole section 53, the floating piston 27 is hermetically mounted in the second straight hole section 52, and a plurality of fourth mounting holes 54 communicated with the rear part of the tapered hole section 53 are uniformly distributed at intervals on the outer side of the front part of the chuck body 1 corresponding to the position between the rear part of the center 2 and the front part of the floating piston 27.

According to requirements, the rear part of the mounting channel for sealing and mounting the main piston 3 and the piston ring 5 is communicated with the first straight hole section 51, the second straight hole section 52 and the taper hole section 53 to form the mounting channel, and the number of the fourth mounting holes 54 can be two. By providing the floating piston 27 and the fourth mounting hole 54, sealing between the rear side of the main piston 3 and the inner wall of the mounting channel is facilitated during use, and mounting with the wedge 24 is facilitated, since the backward movement of the main piston 3 is caused by the action of the gas or fluid entering the installation channel through the fifth air inlet hole 37 on the front end surface of the piston ring 5, the floating piston 27 can maintain the sealing performance of the installation channel between the piston ring 5 and the floating piston 27, prevent the main piston 3 from suddenly moving left to drive the wedge block 24 to rapidly move backward so as to cause the auxiliary piston 4 to rapidly retract left and collide with the outer side of the wedge block 24, reduce the failure rate, meanwhile, the main piston 3 can suck the floating piston 27, the floating piston 27 plays a role in sucking the center 2, the centre 2 and the jaws 23 are enabled to synchronously clamp the tap bar, and similarly, the centre 2 and the jaws 23 can synchronously loosen the tap bar by moving the main piston 3 forwards.

In order to facilitate the transmission connection between the mandrel 9 and the driving shaft, the mandrel 9 and the driving shaft synchronously rotate, the clamped workpiece is conveniently processed and clamped, the piston ring 5 can be guided and positioned, the piston ring 5 and the chuck body 1 are prevented from rotating relatively and clamping at a certain angle to the screw tap bar, at least one second guide column is uniformly distributed between the front end of the mandrel 9 and the rear end of the second cover plate 8 along the circumference, as shown in the attached figures 4, 5, 8, 10, 12 and 13, a plurality of outer key grooves 66 are uniformly distributed at intervals along the circumference at the rear end of the mandrel 9, inner key grooves corresponding to the outer key grooves 66 are arranged on the output shaft of the driving mechanism 62, the front end of the output shaft of the driving mechanism 62 is sleeved on the inner side of the rear end of the mandrel 9, a key strip clamped in the corresponding outer key groove 66 is arranged in each inner key groove, and a locking ring 20 is tightly sleeved on the outer side of the rear end of the mandrel 9, the locking ring 20 is a conventional and well-known separated optical axis fixing ring, and at least one positioning pin is arranged between the front end of the mandrel 9 and the rear side of the second cover plate 8, between the front side of the second cover plate 8 and the first cover plate 7, and between the first cover plate 7 and the piston ring 5.

In order to counteract the axial force applied to the first seal 28 at the front side of the air inlet outer ring groove 30 and the second seal 29 at the front side of the air inlet inner ring groove 31 when injecting gas or liquid into the air inlet, and to counteract the axial force applied to the first seal 28 at the rear side of the air outlet outer ring groove 32 and the second seal 29 at the rear side of the air outlet inner ring groove 33 when injecting gas or liquid into the air outlet, so as to avoid fatigue failure of the first seal 28 and the second seal 29 when receiving unidirectional axial force, shorten the service life of the first seal 28 and the second seal 29, and improve the clamping reliability of the utility model, and at the same time, the arrangement is such that the first seal 28 and the second seal 29 receive axial force of interaction, so as to enhance the sealing effect of the first seal 28 and the second seal 29, as shown in fig. 4, 5, 7, 8, 10, 12, 13, two first sealing elements 28 are arranged between the outer side of the slip ring 10 and the inner side of the shaft seat 11 at intervals in the front-back direction corresponding to the position between the air inlet outer ring groove 30 and the air outlet outer ring groove 32, a constant pressure outer ring groove 45 positioned between the two first sealing elements 28 is arranged on the outer side of the mandrel 9, a first constant pressure hole 47 communicated with the constant pressure outer ring groove 45 is arranged on the outer side of the shaft seat 11, two second sealing elements 29 are arranged between the inner side of the slip ring 10 and the outer side of the mandrel 9 at intervals in the front-back direction corresponding to the position between the air inlet inner ring groove 31 and the air outlet inner ring groove 33, a constant pressure inner ring groove 46 positioned between the two second sealing elements 29 is arranged on the inner side of the slip ring 10, and at least one second constant pressure hole 48 communicated with the bottom wall of the constant pressure inner ring groove 46 is arranged on the bottom wall of the constant pressure outer ring groove 45 at intervals. According to the requirement, the bottom walls of the constant pressure outer ring groove 45 and the constant pressure inner ring groove 46 can not be communicated, and the outer side of the front end of the shaft seat 11 is fixedly provided with a connecting flange fixedly installed with the hydraulic rotary table 95.

As shown in fig. 1, 2 and 3, the square grinding device includes a square grinding driving mechanism 109, a square grinding wheel and a first cross sliding table 102, the upper side of the left front portion of the worktable 94 is fixedly provided with the first cross sliding table 102 with an X axis or a Y axis perpendicular to the center axis of the second cartridge assembly 98, the upper end of the first cross sliding table 102 is fixedly provided with the square grinding driving mechanism 109, the outer side of the end portion of the output shaft of the square grinding driving mechanism 109 is fixedly provided with the square grinding wheel with the center axis parallel to the center axis of the second cartridge assembly 98, the groove grinding device includes a groove grinding driving mechanism 110, a groove grinding wheel and a first three-axis sliding table 105, the upper side of the front portion of the worktable 94 is fixedly provided with the first three-axis sliding table 105 with an X axis or a Y axis perpendicular to the center axis of the third cartridge assembly, the rear side of the upper portion of the first cross sliding table 102 is fixedly provided with a groove driving mechanism 110, the outer side of the end portion of the output shaft of the groove driving mechanism 110 is fixedly provided with a groove 105 with a groove with a center axis perpendicular to the center axis of the third cartridge assembly The grinding wheel and the thread grinding device comprise a thread grinding driving mechanism 111, a thread grinding wheel, a second cross sliding table 103 and a first dividing disc 107, the upper side of the right front part of the workbench 94 is fixedly provided with the second cross sliding table 103 with an X axis or a Y axis vertical to the central axis of the tip of the fourth chuck component 99, the upper side of the second cross sliding table 103 is fixedly provided with the first dividing disc 107, the end surface of the first dividing disc 107 is rotatably provided with the thread grinding driving mechanism 111, the outer side of the end part of an output shaft of the thread grinding driving mechanism 111 is fixedly provided with the thread grinding wheel with the central axis parallel to the central axis of the tip of the fourth chuck component 99, the relief grinding device comprises a relief grinding driving mechanism 112, a relief grinding wheel, a third cross sliding table 104 and a second dividing disc 108, the upper side of the right rear part of the workbench 94 is fixedly provided with the third cross sliding table 104 with the X axis or the Y axis vertical to the central axis of the tip of the fifth chuck component 100, the upper side of the third cross sliding table 104 is fixedly provided with the second dividing disc 108, the end face of the second index plate 108 is rotatably provided with a relief grinding driving mechanism 112, the outer side of the end part of an output shaft of the relief grinding driving mechanism 112 is fixedly provided with a relief grinding wheel with a central axis parallel to the central axis of the tip of the fifth chuck assembly 100, the fine grinding device comprises a fine grinding driving mechanism 113, a fine grinding wheel and a second three-axis sliding table 106, the upper side of the rear part of the workbench 94 is fixedly provided with the second three-axis sliding table 106 with an X axis or a Y axis perpendicular to the central axis of the tip of the sixth chuck assembly 101, the front side of the upper part of the second three-axis sliding table 106 is fixedly provided with the fine grinding driving mechanism 113, and the outer side of the end part of the output shaft of the fine grinding driving mechanism 113 is fixedly provided with the fine grinding wheel with a central axis perpendicular to the central axis of the tip of the sixth chuck assembly 101.

According to requirements, the electric main shafts of the grinding square driving mechanism 109, the grinding groove driving mechanism 110, the grinding thread driving mechanism 111, the relief grinding driving mechanism 112 and the finish grinding driving mechanism 113 are all well-known electric main shafts, and the first cross sliding table 102, the second cross sliding table 103, the third cross sliding table 104, the first three-shaft sliding table 105, the second three-shaft sliding table 106, the first indexing disc 107 and the second indexing disc 108 are all well-known in the prior art. In the using process, the first cross sliding table 102 can drive the grinding driving mechanism 109 to drive the grinding wheel to grind the tail part of the screw tap rod to form a four-sided square tail, and simultaneously, the outer side of the screw tap rod is roughly ground, the first three-axis sliding table 105 can drive the groove grinding driving mechanism 110 to drive the groove grinding wheel and match the rotation of the chuck component, the head part of the screw tap rod subjected to rough grinding is ground into a spiral groove, the second cross sliding table 103 and the first dividing disc 107 drive the thread grinding driving mechanism 111 to drive the thread grinding wheel and match the rotation of the chuck component, the screw tap rod with the grooved head part is ground to generate threads, the third cross sliding table 104 and the second dividing disc 108 drive the relief grinding driving mechanism 112 to drive the relief grinding wheel and match the rotation of the chuck component, the head part of the screw tap rod generating threads is relief ground, the second three-axis fine grinding table 106 drives the driving mechanism 113, the screw tap rod material after the head relief grinding is driven by the fine grinding wheel to carry out final correction, the processing technology of the screw tap is concentrated on one device, the production efficiency is improved, the occupied area is saved, and the benefit of an enterprise is increased.

The above technical feature groups constitute embodiments of the present invention, which have strong adaptability and optimal implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims (10)

1. A screw tap machining device is characterized by comprising a workbench, a hydraulic rotary table, a mechanical arm, a square grinding device, a groove grinding device, a thread grinding device, a relief grinding device and a finish grinding device, wherein the hydraulic rotary table is arranged in the center of the workbench, first chuck components, second chuck components, third chuck components, fourth chuck components, fifth chuck components and sixth chuck components are uniformly distributed on the hydraulic rotary table at intervals along the anticlockwise direction, the first chuck components, the second chuck components, the third chuck components, the fourth chuck components, the fifth chuck components and the sixth chuck components are all used for clamping screw taps and driving the screw taps to rotate, the mechanical arm is arranged on the upper side of the left rear part of the workbench corresponding to the position of the first chuck components, a clamping jaw mechanism used for clamping screw taps is fixedly installed at the tail end of the mechanical arm, the square grinding device used for grinding the tail end of a screw tap bar and the outer side of a rough ground screw tap bar is arranged on the upper side of the left front part of the workbench corresponding to the position of the second chuck components, the upper side of the front part of the workbench corresponding to the third chuck assembly position is provided with a groove grinding device for grooving the outer side of the screw tap bar, the upper side of the right front part of the workbench corresponding to the fourth chuck assembly position is provided with a thread grinding device for grinding threads on the outer side of the screw tap bar, the upper side of the right rear part of the workbench corresponding to the fifth chuck assembly position is provided with a relief grinding device for relief grinding the head part of the screw tap bar, and the upper side of the rear part of the workbench corresponding to the sixth chuck assembly position is provided with a fine grinding device for fine grinding the outer side of the screw tap bar.

2. The tap processing device according to claim 1, wherein the jaw mechanism comprises a cylinder body, a front piston rod, a rear piston rod and a gripper, the right side of the cylinder body is fixedly mounted with the end of the mechanical arm, the left side of the cylinder body is provided with a front piston chamber and a rear piston chamber at intervals from front to rear, the center of the left side of the cylinder body corresponding to the position between the front piston chamber and the rear piston chamber is fixedly provided with the gripper, the front side and the rear side of the left end of the gripper are respectively fixedly provided with a front finger and a rear finger, the front piston rod with the left end hermetically penetrating through the left part of the front piston chamber is coaxially arranged in the front piston chamber, the left end of the front piston rod is provided with a V-shaped first clamping groove with a leftward opening, the first clamping groove is internally provided with a front clamping block with a leftward-opened V-shaped structure, the center of the left side of the front clamping block is provided with a left-right through front connecting hole, the inner wall of the first clamping groove corresponding to the position of the front connecting hole is provided with a front fixing screw hole, the front connecting bolt with the right end screwed in the front connecting hole, a front piston ring with the outer side in sealing contact with the inner wall of the front piston chamber is fixed on the outer side of the right end of the front piston rod, a rear piston rod with the left end passing through the left part of the rear piston chamber in a sealing way is coaxially arranged in the rear piston chamber, a V-shaped second clamping groove with the left opening is arranged at the left end of the rear piston rod, a rear clamping block with a V-shaped structure with the left opening is arranged in the second clamping groove, a rear connecting hole which is communicated with the left and right is arranged in the center of the left side of the rear clamping block, a rear fixing screw hole is arranged on the inner wall of the second clamping groove corresponding to the position of the rear connecting hole, a rear connecting bolt with the right end screwed in the rear fixing screw hole is arranged in the rear connecting hole, a rear piston ring with the outer side in sealing contact with the inner wall of the rear piston chamber is fixed on the outer side of the right end of the rear piston rod, a front piston ring and a rear air hole which are respectively communicated with the front piston chamber at the right side of the front piston ring and the rear piston chamber at the right side of the rear piston ring are arranged at intervals, a front elastic reset piece is arranged between the outer side of the front piston rod corresponding to the left side of the front piston chamber and the left part of the front piston chamber, a rear elastic reset piece is arranged between the outer side of the rear piston rod corresponding to the left side of the rear piston ring and the left part of the rear piston chamber.

3. The screw tap machining device according to claim 2, wherein a front rod left portion is provided with a front limiting hole which is through in the front-back direction, a front mounting hole which is through in the front-back direction is formed in the front side of the left portion of the cylinder body corresponding to the position of the front limiting hole, a front limiting pin which is through in the front limiting hole is fixedly mounted in the front mounting hole, a front elastic reset piece is sleeved on the outer side of the front rod between the left side of the front piston ring and the right side of the front limiting pin, a rear rod left portion is provided with a rear limiting hole which is through in the front-back direction, a rear mounting hole which is through in the front end and the rear end of the front mounting hole is formed in the rear side of the left portion of the cylinder body corresponding to the position of the rear limiting hole, a rear limiting pin which is through in the middle of the rear limiting hole is fixedly mounted in the rear mounting hole, and a rear elastic reset piece is sleeved on the outer side of the rear rod between the left side of the rear piston ring and the right side of the rear limiting pin; or/and a front positioning hole and a rear positioning hole are arranged on the right side of the cylinder body corresponding to the position between the front piston chamber and the rear piston chamber at intervals from front to back, the left end of the front positioning hole is communicated with the rear part of the front positioning hole, the left end of the rear positioning hole is communicated with the front part of the rear positioning hole, at least one front positioning groove with an outward opening is uniformly distributed on the rear part of the front positioning pin at intervals along the circumference, a front positioning screw with the left end in contact with the bottom wall of one of the front positioning grooves is screwed in the front positioning hole, at least one rear positioning groove with an outward opening is uniformly distributed on the front part of the rear positioning pin at intervals along the circumference, and a rear positioning screw with the left end in contact with the bottom wall of one of the rear positioning grooves is screwed in the rear positioning hole.

4. The tap processing device according to claim 1, 2 or 3, wherein a sealing cover with a closed upper end and an open lower end is fixedly arranged at the upper end of the hydraulic rotary table, an upper mounting through hole which is vertically communicated is arranged at the upper end of the sealing cover, lower mounting through holes which correspond to the first chuck component, the second chuck component, the third chuck component, the fourth chuck component, the fifth chuck component and the sixth chuck component are arranged at the outer side of the middle part of the sealing cover, the structure of the first chuck component, the structure of the second chuck component, the structure of the third chuck component, the structure of the fourth chuck component, the structure of the fifth chuck component and the structure of the sixth chuck component are all the same and are arranged in the lower mounting through holes at corresponding positions, the third chuck component comprises a chuck body, a tip, a chuck component, a main piston, an auxiliary piston and a driving device, a chuck body is arranged in front of the sealing cover, and a mounting channel which is vertically communicated is arranged at the rear end of the chuck body, the outer side of the rear part of the centre is sleeved on the inner side of the front part of the chuck body, at least two guide holes which are radially communicated are uniformly distributed on the outer side of the rear part of the chuck body at intervals along the circumference, an auxiliary piston is hermetically and slidably mounted in each guide hole, a reset spring sheet corresponding to the auxiliary piston is fixedly mounted on the outer side of the rear part of the chuck body, a limiting groove with an outward opening is formed in the outer side of the chuck body corresponding to the position of each reset spring sheet, a clamping jaw assembly with the rear end abutting against the position between the reset spring sheet and the corresponding auxiliary piston is arranged in each limiting groove, a main piston capable of enabling the front ends of all clamping jaws to be mutually far away or close when moving back and forth is hermetically and slidably mounted in the chuck body corresponding to the rear part of the centre, a driving device capable of enabling the chuck body to rotate and enabling the main piston to move back and forth is arranged on the upper side of the rear part of the hydraulic rotary table corresponding to the rear part of the chuck body, and a tailstock is fixedly mounted on the front side of the lower part of the sealing cover corresponding to the lower part of the chuck body, the upper side of the front end of the tailstock corresponding to the front position of the tip is fixedly provided with a tail tip corresponding to the tip.

5. The tap processing device according to claim 4, wherein the jaw assembly comprises an adjusting jackscrew, a connecting plate and jaws, the outer side of the chuck body corresponding to the position of each reset spring piece is provided with a connecting plate with the front part hinged and connected with the limiting groove at the corresponding position, the rear end of the connecting plate is provided with an adjusting threaded through hole, the adjusting threaded through hole is internally screwed with the adjusting jackscrew, the front part of the reset spring piece corresponding to the position of the adjusting jackscrew is provided with a first adjusting through hole, the inner end surface of the adjusting jackscrew is abutted against the outer end surface of the auxiliary piston at the corresponding position and the outer side of the rear end of the connecting plate is abutted against the inner side of the reset spring piece at the corresponding position, the front part of the connecting plate is hinged and connected with the jaw with the front end positioned in front of the jackscrew, the right side of the rear part of the jaw is provided with a left-right through fan-shaped second adjusting through hole, the connecting plate corresponding to the second adjusting through hole is provided with a connecting through hole, the screw rod end sequentially penetrates through the connecting hole and the adjusting bolt of the left-screwed nut to be installed together, a clamping block close to the outer side of the front end of the centre is fixed at the front end of the clamping jaw; or/and two guide holes which are symmetrically distributed up and down are uniformly distributed on the outer side of the rear part of the chuck body at intervals along the circumference, a first mounting hole which is communicated up and down is arranged at the front part of the main piston, a wedge block with the rear part protruding out of the outer side of the main piston is fixedly mounted in the first mounting hole, first cambered surfaces which shrink from back to front from outside to inside are arranged on the outer sides of the upper part and the lower part of the wedge block corresponding to the outer side of the main piston, and a second cambered surface matched with the first cambered surfaces is arranged on the inner end surface of the auxiliary piston.

6. The tap processing device according to claim 5, wherein the front portion of the wedge block is provided with a second mounting hole having left and right ends extending to the right and left outer sides of the main piston, respectively, the front end of the main piston is provided with a third mounting hole having a rear end communicating with the second mounting hole, the second mounting hole is provided with a fixing pin, the outer side of the middle portion of the fixing pin is provided with a fixing ring groove, and the third mounting hole is screwed with a fixing screw having a rear end fastened in the fixing ring groove.

7. The tap processing device according to claim 4, wherein the driving device comprises a connecting assembly, a mandrel, a slip ring, a shaft seat and a driving mechanism, a piston ring with the outer side in sealing contact with the inner wall of the rear part of the installation channel is fixed at the rear end of the main piston, the rear side of the chuck body is fixedly and hermetically mounted with the front side of the connecting assembly, the rear end of the connecting assembly is fixedly and fixedly mounted with the front end of the mandrel of the hollow structure, the slip ring is rotatably mounted at the outer side of the middle part of the mandrel, the shaft seat fixedly mounted with the sealing cover is rotatably mounted at the outer side of the slip ring, the rear end of the mandrel corresponding to the rear position of the shaft seat is in transmission connection with the front end of the output shaft of the driving mechanism fixedly mounted at the upper side of the rear part of the hydraulic turntable, an air inlet outer ring groove and an air outlet outer ring groove are distributed at intervals at the front and back of the outer side of the slip ring, an air inlet inner ring groove corresponding to the air outlet outer ring groove is arranged at the inner side of the rear part of the slip ring, at least one first sealing element is arranged between the outer side of the slip ring and the inner side of the shaft seat at intervals in front of the outer air inlet ring groove, between the outer air inlet ring groove and the outer air outlet ring groove and in front of the outer air outlet ring groove, at least one second sealing element is arranged between the inner side of the slip ring and the outer side of the mandrel at intervals in front of the inner air inlet ring groove, between the inner air inlet ring groove and the inner air outlet ring groove and in front of the inner air outlet ring groove, a first air inlet hole communicated with the outer air inlet ring groove is arranged on the outer side of the rear part of the shaft seat, at least one second air inlet hole communicated with the bottom wall of the inner air inlet ring groove is arranged on the bottom wall of the outer air inlet ring groove at intervals, a third air inlet hole with the outer air inlet ring groove is arranged in the mandrel, the other end of the third air inlet hole extends to the front end surface of the mandrel, a fourth air inlet hole with the rear end of the connecting component corresponding to the front end of the third air inlet hole is arranged on the rear side of the connecting component, a fifth air inlet hole with one end corresponding to the front end of the fourth air inlet hole is arranged in the chuck body, the other end of the fifth air inlet hole is communicated with the inner wall of the installation channel in front of the piston ring, a first air outlet hole communicated with the air outlet outer ring groove is arranged on the outer side of the front part of the shaft seat, at least one second air outlet hole communicated with the bottom wall of the air outlet inner ring groove is arranged on the bottom wall of the air outlet outer ring groove at intervals, a third air outlet hole with one end communicated with the air outlet outer ring groove is arranged in the mandrel, the other end of the third air outlet hole extends to the front end surface of the mandrel, a fourth air outlet hole which is through from front to back and the rear end of which corresponds to the front end of the third air outlet hole is arranged on the rear side of the connecting component, and the front end of the fourth air outlet hole is communicated with the installation channel behind the piston ring; or/and the connecting component comprises a first guide post, a first cover plate and a second cover plate which are fixedly installed together in a sealing way, the rear end of the chuck body is fixedly installed together with the front end of the first cover plate in a sealing way, at least one first guide groove with a forward opening is uniformly distributed at intervals along the circumference at the front end of the first cover plate corresponding to the position of the installation channel, a second guide groove with a backward opening is arranged at the rear end of the piston ring corresponding to each first guide groove, a first guide post with the front outer side sleeved in the corresponding second guide groove is fixedly installed in each first guide groove, a distance is arranged between the front end of each first guide post and the bottom wall of the corresponding second guide groove, the front end of the mandrel and the rear end of the second cover plate are fixedly installed together, the fourth air inlet hole comprises a sixth air inlet hole and a seventh air inlet hole, a sixth air inlet hole which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front position of the third air inlet hole, the rear end of the first cover plate is provided with a seventh air inlet hole, one end of the seventh air inlet hole corresponds to the sixth air inlet hole, the other end of the seventh air inlet hole extends to the front end surface of the first cover plate close to the outer side, the fourth air outlet hole comprises a fifth air outlet hole and a sixth air outlet hole, a fifth air outlet hole which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front position of the third air outlet hole, a sixth air outlet hole which is communicated with the front and the back is arranged at the back side of the first cover plate corresponding to the fifth air outlet hole, a back bearing and a front bearing are respectively arranged at the outer side of the mandrel corresponding to the back and the front of the slip ring and the inner side of the shaft seat, a first end cover is fixedly arranged at the rear end of the shaft seat corresponding to the rear position of the rear bearing, a first locking nut screwed on the outer side of the rear part of the mandrel is hermetically arranged at the inner side of the first end cover, a second end cover is fixedly arranged at the front end of the shaft seat corresponding to the front side of the front bearing, and a second locking nut screwed on the outer side of the front part of the mandrel is hermetically arranged on the inner side of the second end cover; or/and, the installation passageway that corresponds dabber the place ahead position includes by the first straight hole section that communicates in proper order before to after, second straight hole section and taper hole section, the diameter of first straight hole section is greater than the diameter of second straight hole section, the diameter of second straight hole section is greater than the diameter of taper hole section rear end, the diameter of taper hole section rear end is less than the diameter of taper hole section front end, top rear portion outside is the conical surface with the anterior inner wall assorted of taper hole section, seal installation has floating piston in the second straight hole section, the anterior outside interval equipartition of chuck body that corresponds the position between top rear and the floating piston the place ahead has the fourth mounting hole of a plurality of and taper hole section rear portion intercommunication.

8. The tap processing device according to claim 4, wherein the driving device comprises a connecting assembly, a mandrel, a slip ring, a shaft seat and a driving mechanism, a piston ring with the outer side in sealing contact with the inner wall of the rear part of the installation channel is fixed at the rear end of the main piston, the rear side of the chuck body is fixedly and hermetically mounted with the front side of the connecting assembly, the rear end of the connecting assembly is fixedly and fixedly mounted with the front end of the mandrel of the hollow structure, the slip ring is rotatably mounted at the outer side of the middle part of the mandrel, the shaft seat fixedly mounted with the sealing cover is rotatably mounted at the outer side of the slip ring, the rear end of the mandrel corresponding to the rear position of the shaft seat is in transmission connection with the front end of the output shaft of the driving mechanism fixedly mounted at the upper side of the rear part of the hydraulic turntable, an air inlet outer ring groove and an air outlet outer ring groove are distributed at intervals at the front and back of the outer side of the slip ring, an air inlet inner ring groove corresponding to the air outlet outer ring groove is arranged at the inner side of the rear part of the slip ring, at least one first sealing element is arranged between the outer side of the slip ring and the inner side of the shaft seat at intervals in front of the outer air inlet ring groove, between the outer air inlet ring groove and the outer air outlet ring groove and in front of the outer air outlet ring groove, at least one second sealing element is arranged between the inner side of the slip ring and the outer side of the mandrel at intervals in front of the inner air inlet ring groove, between the inner air inlet ring groove and the inner air outlet ring groove and in front of the inner air outlet ring groove, a first air inlet hole communicated with the outer air inlet ring groove is arranged on the outer side of the rear part of the shaft seat, at least one second air inlet hole communicated with the bottom wall of the inner air inlet ring groove is arranged on the bottom wall of the outer air inlet ring groove at intervals, a third air inlet hole with the outer air inlet ring groove is arranged in the mandrel, the other end of the third air inlet hole extends to the front end surface of the mandrel, a fourth air inlet hole with the rear end of the connecting component corresponding to the front end of the third air inlet hole is arranged on the rear side of the connecting component, a fifth air inlet hole with one end corresponding to the front end of the fourth air inlet hole is arranged in the chuck body, the other end of the fifth air inlet hole is communicated with the inner wall of the installation channel in front of the piston ring, a first air outlet hole communicated with the air outlet outer ring groove is arranged on the outer side of the front part of the shaft seat, at least one second air outlet hole communicated with the bottom wall of the air outlet inner ring groove is arranged on the bottom wall of the air outlet outer ring groove at intervals, a third air outlet hole with one end communicated with the air outlet outer ring groove is arranged in the mandrel, the other end of the third air outlet hole extends to the front end surface of the mandrel, a fourth air outlet hole which is through from front to back and the rear end of which corresponds to the front end of the third air outlet hole is arranged on the rear side of the connecting component, and the front end of the fourth air outlet hole is communicated with the installation channel behind the piston ring; or/and the connecting component comprises a first guide post, a first cover plate and a second cover plate which are fixedly installed together in a sealing way, the rear end of the chuck body is fixedly installed together with the front end of the first cover plate in a sealing way, at least one first guide groove with a forward opening is uniformly distributed at intervals along the circumference at the front end of the first cover plate corresponding to the position of the installation channel, a second guide groove with a backward opening is arranged at the rear end of the piston ring corresponding to each first guide groove, a first guide post with the front outer side sleeved in the corresponding second guide groove is fixedly installed in each first guide groove, a distance is arranged between the front end of each first guide post and the bottom wall of the corresponding second guide groove, the front end of the mandrel and the rear end of the second cover plate are fixedly installed together, the fourth air inlet hole comprises a sixth air inlet hole and a seventh air inlet hole, a sixth air inlet hole which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front position of the third air inlet hole, the rear end of the first cover plate is provided with a seventh air inlet hole, one end of the seventh air inlet hole corresponds to the sixth air inlet hole, the other end of the seventh air inlet hole extends to the front end surface of the first cover plate close to the outer side, the fourth air outlet hole comprises a fifth air outlet hole and a sixth air outlet hole, a fifth air outlet hole which is communicated from front to back is arranged at the rear side of the second cover plate corresponding to the front position of the third air outlet hole, a sixth air outlet hole which is communicated with the front and the back is arranged at the back side of the first cover plate corresponding to the fifth air outlet hole, a back bearing and a front bearing are respectively arranged at the outer side of the mandrel corresponding to the back and the front of the slip ring and the inner side of the shaft seat, a first end cover is fixedly arranged at the rear end of the shaft seat corresponding to the rear position of the rear bearing, a first locking nut screwed on the outer side of the rear part of the mandrel is hermetically arranged at the inner side of the first end cover, a second end cover is fixedly arranged at the front end of the shaft seat corresponding to the front side of the front bearing, and a second locking nut screwed on the outer side of the front part of the mandrel is hermetically arranged on the inner side of the second end cover; or/and, the installation passageway that corresponds dabber the place ahead position includes by the first straight hole section that communicates in proper order before to after, second straight hole section and taper hole section, the diameter of first straight hole section is greater than the diameter of second straight hole section, the diameter of second straight hole section is greater than the diameter of taper hole section rear end, the diameter of taper hole section rear end is less than the diameter of taper hole section front end, top rear portion outside is the conical surface with the anterior inner wall assorted of taper hole section, seal installation has floating piston in the second straight hole section, the anterior outside interval equipartition of chuck body that corresponds the position between top rear and the floating piston the place ahead has the fourth mounting hole of a plurality of and taper hole section rear portion intercommunication.

9. The screw tap machining device according to claim 5 or 6, wherein the squaring device comprises a squaring driving mechanism, a squaring grinding wheel and a first cross sliding table, a first cross sliding table with an X axis or a Y axis perpendicular to the central axis of the center of the second chuck assembly is fixedly mounted on the upper side of the front left portion of the workbench, a squaring driving mechanism is fixedly mounted at the upper end of the first cross sliding table, a squaring grinding wheel with a central axis parallel to the central axis of the center of the second chuck assembly is fixedly mounted on the outer side of the end portion of an output shaft of the squaring driving mechanism, the grooving device comprises a grooving driving mechanism, a grooving grinding wheel and a first three-axis sliding table, a first three-axis sliding table with an X axis or a Y axis perpendicular to the central axis of the center of the third chuck assembly is fixedly mounted on the upper side of the front portion of the workbench, a grooving driving mechanism is fixedly mounted on the rear side of the upper portion of the first cross sliding table, and a grooving grinding groove grinding driving mechanism with a central axis perpendicular to the central axis of the center of the third chuck assembly is fixedly mounted on the outer side of the end of the output shaft of the grooving driving mechanism The upper side of the right rear part of the workbench is fixedly provided with a thirty-square sliding table of which the X axis or the Y axis is vertical to the central axis of the fifth chuck assembly tip, the upper side of the thirty-square sliding table is fixedly provided with a second dividing disc, the end face of the second dividing disc is rotatably provided with a grinding thread driving mechanism, the outer side of the end part of an output shaft of the relief grinding driving mechanism is fixedly provided with a relief grinding wheel with a central axis parallel to the central axis of the tip of the fifth chuck assembly, the fine grinding device comprises a fine grinding driving mechanism, a fine grinding wheel and a second three-axis sliding table, the upper side of the rear part of the workbench is fixedly provided with the second three-axis sliding table with an X axis or a Y axis perpendicular to the central axis of the tip of the sixth chuck assembly, the front side of the upper part of the second three-axis sliding table is fixedly provided with the fine grinding driving mechanism, and the outer side of the end part of the output shaft of the fine grinding driving mechanism is fixedly provided with the fine grinding wheel with a central axis perpendicular to the central axis of the tip of the sixth chuck assembly.

10. The screw tap machining device according to claim 7, wherein the squaring device comprises a squaring driving mechanism, a squaring grinding wheel and a first cross slide table, the first cross slide table with an X-axis or a Y-axis perpendicular to the central axis of the center of the second cartridge assembly is fixedly mounted on the upper side of the front left portion of the worktable, the squaring driving mechanism is fixedly mounted at the upper end of the first cross slide table, the squaring grinding wheel with a central axis parallel to the central axis of the center of the second cartridge assembly is fixedly mounted on the outer side of the end portion of the output shaft of the squaring driving mechanism, the grooving device comprises a grooving driving mechanism, a grooving grinding wheel and a first three-axis slide table, the first three-axis slide table with an X-axis or a Y-axis perpendicular to the central axis of the center of the third cartridge assembly is fixedly mounted on the upper side of the front portion of the worktable, the grooving driving mechanism is fixedly mounted on the rear side of the upper portion of the first cross slide table, the grooving driving mechanism is fixedly mounted on the outer side of the end portion of the output shaft of the grooving driving mechanism, the grooving grinding wheel with a central axis perpendicular to the center of the third cartridge assembly, the thread grinding device comprises a thread grinding driving mechanism, a thread grinding wheel, a second cross sliding table and a first dividing disc, wherein the upper side of the right front part of the workbench is fixedly provided with the second cross sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the fourth chuck component, the upper side of the second cross sliding table is fixedly provided with the first dividing disc, the end surface of the first dividing disc is rotatably provided with the thread grinding driving mechanism, the outer side of the end part of an output shaft of the thread grinding driving mechanism is fixedly provided with the thread grinding wheel of which the central axis is parallel to the central axis of the center of the fourth chuck component, the relief grinding device comprises a relief grinding driving mechanism, a relief grinding wheel, a third cross sliding table and a second dividing disc, the upper side of the right rear part of the workbench is fixedly provided with the third cross sliding table of which the X axis or the Y axis is vertical to the central axis of the center of the fifth chuck component, the upper side of the third cross sliding table is fixedly provided with the second dividing disc, and the end surface of the second dividing disc is rotatably provided with the relief grinding driving mechanism, the outer side of the end part of an output shaft of the relief grinding driving mechanism is fixedly provided with a relief grinding wheel with a central axis parallel to the central axis of the tip of the fifth chuck assembly, the fine grinding device comprises a fine grinding driving mechanism, a fine grinding wheel and a second three-axis sliding table, the upper side of the rear part of the workbench is fixedly provided with the second three-axis sliding table with an X axis or a Y axis perpendicular to the central axis of the tip of the sixth chuck assembly, the front side of the upper part of the second three-axis sliding table is fixedly provided with the fine grinding driving mechanism, and the outer side of the end part of the output shaft of the fine grinding driving mechanism is fixedly provided with the fine grinding wheel with a central axis perpendicular to the central axis of the tip of the sixth chuck assembly.

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