CN216066530U

CN216066530U - Floating clamping jaw

Info

Publication number: CN216066530U
Application number: CN202122307146.9U
Authority: CN
Inventors: 王宏波; 李文磊; 张剑
Original assignee: Zhejiang Ivke Machinery Technology Co ltd
Current assignee: Zhejiang Ivke Machinery Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-18
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to the technical field of clamps, in particular to a floating clamping jaw which comprises a clamping chuck body, a tip, a clamping jaw assembly, a main piston, an auxiliary piston and a driving device, wherein the left end of the clamping chuck body is provided with a left-right through installation channel. The clamping jaw assembly has the advantages that the structure is reasonable and compact, the driving device drives the main piston to move leftwards, the auxiliary piston is pushed into the guide hole by the inner side of the left end of the clamping jaw assembly, openings between the right ends of all the clamping jaw assemblies are enlarged, one end of a workpiece to be machined is placed, then the driving device is controlled to enable the main piston to move rightwards, the main piston pushes the auxiliary piston out of the guide hole, the outer end of the auxiliary piston abuts against the inner side of the left end of the clamping jaw assembly, the workpiece to be machined is clamped after the openings of the right ends of the clamping jaw assemblies are reduced, the clamping precision of the workpiece to be machined is guaranteed, the subsequent machining or secondary clamping is facilitated, the collision and the clamping time in the clamping process can be reduced, and the clamping jaw assembly has the characteristics of small clamping precision deviation, multiple-process one-time clamping, accurate positioning and high efficiency.

Description

Floating clamping jaw

Technical Field

The utility model relates to the technical field of clamps, in particular to a floating clamping jaw.

Background

The clamping jaw is one of important technological equipment in the traditional mechanical manufacturing industry, is transversely expanded to various production fields such as inspection, welding and assembly automation after the 20 th century and 80 th era, and has a greater development prospect.

In the production of automated assembly plants, it is common to use gripping jaws to assist the production, such as the positioning of the outer cylinder of the airtight cylinder with the springs and shims, which are normally carried by pallets on a double-speed chain to the assembly station. During assembly, the gasket and the spring on the tray need to be placed in the cylinder barrel of the outer cylinder one by one, and the spring and the gasket are manually placed on the tray, so that the center positioning accuracy of the spring and the gasket is about +/-0.3 mm. However, the distance between the center of the cylinder barrel of the outer cylinder and the center of the spring and the gasket is very small, about +/-0.1 mm, and the common clamping jaw does not have a trace plane floating function, so that the outer cylinder, the spring and the gasket cannot be accurately positioned, and the assembly precision is reduced.

With the vigorous development of manufacturing industry, China has become a country with large manufacturing consumption of shaft parts, but the current production mode is still labor-intensive, the technical content is low, and the additional value is low. With the factors of labor cost rise, RMB value rise and the like worsening, the advantage of low manufacturing cost in China is gradually lost, and a series of problems of difficult recruitment and management, manufacturing cost rise, difficulty in timely order completion and the like inevitably occur. Therefore, how to improve the processing technology of shaft sleeve parts and realize the automatic production of shaft parts is urgent.

The requirements of all working procedures on the rotation precision are high in the machining of the screw tap, the reference of the screw tap is two tip holes, all machining precisions use two tips as the reference, the hardness of materials is high, the diameter is small, simultaneous positioning and zero clearance driving are realized in the machining, the problem is not well solved, the traditional machine tool is single in working procedure, the inner cone tip is directly used in groove grinding machining, due to the fact that the reference is not uniform, the precision deviation is large, a tolerance zone in the position is unnecessarily widened by most tool manufacturers, the influence on products is large, the front tool face is caused by jumping, and the service life of the screw tap is greatly shortened.

Patent document No. CN106926132A discloses an adjustable chuck capable of ensuring end face runout through adjustment, which includes a rotating spindle and a chuck seat disposed at the front end of the rotating spindle and coaxial with the rotating spindle, wherein the chuck seat has a first axial through hole, an elastic chuck coaxially and slidably engaged with the chuck seat is disposed in the first through hole, a second axial through hole is disposed in the middle of the rotating spindle, a traction structure for driving the elastic chuck to move axially is disposed in the second through hole, a driving structure for driving the elastic chuck to clamp a workpiece when the traction structure drives the elastic chuck to move backwards is disposed between the elastic chuck and the chuck seat, and an adjusting structure for adjusting end face runout of a held tool is further disposed between the elastic chuck and the chuck seat.

Patent document No. CN106881615A discloses a floating chuck capable of effectively ensuring coaxiality of a tool, which includes a rotating spindle and a chuck seat disposed at the front end of the rotating spindle and coaxially disposed with the rotating spindle, wherein an axial through hole i is disposed in the middle of the chuck seat, an elastic chuck coaxially disposed with the chuck seat is disposed in the through hole i, an axial through hole ii is disposed in the rotating spindle, a traction structure for driving the elastic chuck to move axially is disposed in the through hole ii, and a driving structure for driving the elastic chuck to clamp a workpiece when the traction structure drives the elastic chuck to move backwards is disposed between the elastic chuck and the chuck seat. The elastic chuck is in axial sliding fit with the first through hole, and when the elastic chuck moves axially, the elastic chuck and the chuck seat are always in a coaxial arrangement state. The elastic chuck is circumferentially fixedly connected with the chuck seat, and when the chuck seat rotates, the elastic chuck can be effectively driven to circumferentially rotate together.

Patent document No. CN212824111U discloses a cylinder chuck base, which can make the whole structure of the whole chuck base shrink again by improving the air passage structure, and includes a chuck base body, a cylinder sleeve, a pull rod piston and a back cover plate; the chuck seat body comprises a coaxial front end body and a coaxial rear end body which are integrally processed; the joint of the front end body and the rear end body is in a step shape; five grooves are formed in the side face of the front end body, and the five grooves comprise three sealing grooves for placing sealing rings and two vent grooves for arranging air holes; the sealing grooves and the vent grooves are distributed at intervals; a sealing ring is arranged in the sealing groove; the inner end surface of the rear end body is provided with a circular air accommodating channel which is coaxial with the chuck seat body; the air containing channel is provided with an air containing hole and a spring hole; a plurality of branch air channels are arranged on the air containing channel along the direction towards the inner diameter; the branch air channel is communicated with the air containing hole; a front air passage and a rear air passage are arranged in the chuck seat body; one end of the front air passage and one end of the rear air passage are respectively communicated with a vent groove through air holes; the other end of the front air passage is communicated with the branch air passage; the other end of the rear air inlet passage is communicated with the bottom surface of the rear end body; the cylinder sleeve is arranged outside the five grooves; a rotating shaft bearing is arranged between the two ends of the cylinder sleeve and the side surface of the chuck seat body; an interaction force is formed between the cylinder sleeve and the sealing ring, so that sealing is formed between the chuck base body and the cylinder sleeve, and sealing is formed between the two air grooves; the front end of the cylinder sleeve is provided with a bearing cover which is fixed on the front end body through a bearing cover jackscrew; the pull rod piston is positioned in the rear end body; the side surface of the pull rod piston is respectively connected with the front end and the rear end of the inner side of the rear end body and is sealed by a sealing ring to form a piston air accommodating chamber; the piston air accommodating chamber is communicated with the front air passage; a thrust die spring is arranged in the piston air containing cavity chamber; the pull rod piston is provided with a notch for placing one end of a thrust die spring; the other end of the thrust die spring is positioned in the spring hole; the moving direction of the thrust die spring is consistent with the moving direction of the pull rod piston; the rear cover plate is arranged at the rear end of the rear end body through bolts; rear cover plate air containing cavities are formed between the rear cover plate and the pull rod piston; sealing rings are arranged on the surface of the rear cover plate, which is connected with the rear end body, and the surface of the pull rod piston, which is connected with the rear cover plate, so that the air containing cavity of the rear cover plate is kept sealed; an air inlet channel extending pipeline is arranged in the rear cover plate, one end of the air inlet channel extending pipeline is hermetically connected with an outlet of the rear air inlet channel, and the other end of the air inlet channel extending into the rear cover plate air containing cavity and communicated with the rear cover plate air containing cavity; the cylinder sleeve is provided with a first air inlet pipe connector and a second air inlet pipe connector; the first air inlet pipe joint is communicated with the forward air passage and is used for ventilating the piston air containing cavity chamber through the forward air passage so as to enable the pull rod piston to move backwards; and the second air inlet pipe joint is communicated with the rear air inlet passage and is used for ventilating the rear cover plate air containing cavity chamber through the rear air inlet passage so as to enable the pull rod piston to move forwards.

In the prior art, a screw tap clamp is a device for clamping a screw tap in a tapping process, the current machining of the screw tap is multi-process machining, and when the processes of groove grinding, square grinding, thread grinding and the like are machined, a center hole needs to be positioned, and meanwhile, circumferential positioning needs to be achieved, so that the screw tap is prevented from rotating during machining. The traditional processing mode is top positioning and is manually locked by a hoop. The automatic processing cannot be realized, a sleeve clamp or a chuck clamp is partially used, the repeatability precision is low, the precision retentivity is poor, the reference is not overlapped, and the center and the chuck are used simultaneously, so that the over-positioning phenomenon is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a floating clamping jaw, overcomes the defects of the prior art, and effectively solves the problems of large clamping precision deviation and over-positioning of the existing clamp.

The utility model further solves the problems of poor controllability and low clamping reliability.

The technical scheme of the utility model is realized by the following measures: a floating clamping jaw comprises a chuck body, a tip, a clamping jaw assembly, a main piston, an auxiliary piston and a driving device, wherein the left end of the chuck body is provided with a left-right through installation channel, the outer side of the left part of the tip is sleeved on the inner side of the right part of the chuck body, at least two radial through guide holes are uniformly distributed on the outer side of the left part of the chuck body at intervals along the circumference, the auxiliary piston is hermetically and slidably installed in each guide hole, the outer side of the chuck body corresponding to the position of each auxiliary piston is hinged with a jaw assembly with the right end positioned at the right side of the top, the outer side of the left part of the chuck body is provided with a reset elastic sheet which can ensure that the inner side of the left end of each jaw assembly is propped against the outer end face of the auxiliary piston at the corresponding position, the main piston which can enable the right ends of all the jaw assemblies to be far away from or close to each other when moving left and right is arranged in the chuck body corresponding to the left position of the center in a sealing and sliding mode, and the driving device which can enable the chuck body to rotate and the main piston to move left and right is arranged on the left side of the chuck body.

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

the driving device can comprise a connecting assembly, a mandrel, a sliding ring and a shaft seat, wherein the left end of a main piston is fixedly provided with a piston ring, the outer side of the piston ring is in sealing contact with the inner wall of the left part of the mounting channel, the left side of a chuck body is fixedly arranged with the right side of the connecting assembly in a sealing way, the left end of the connecting assembly is fixedly arranged with the right end of the mandrel of a hollow structure, the outer side of the middle part of the mandrel is rotatably provided with the sliding ring, the shaft seat is rotatably arranged on the outer side of the sliding ring, the outer air inlet ring groove and the outer air outlet ring groove are distributed at intervals on the left and right of the sliding ring, the inner air inlet ring groove corresponding to the outer air inlet ring groove is arranged on the inner side of the left part of the sliding ring, the inner air outlet ring groove corresponding to the outer air outlet ring groove is arranged on the inner side of the sliding ring, and at least one first sealing element is arranged at intervals on the left and right of the outer side of the sliding ring and the shaft seat corresponding to the left of the outer air inlet ring groove, between the outer ring groove and the outer ring groove on the right side of the air outlet ring groove, at least one second sealing element is arranged between the inner slip ring side corresponding to the left side of the air inlet inner ring groove, the air inlet inner ring groove and the air outlet inner ring groove and between the inner side of the slip ring at the right side of the air outlet inner ring groove and the outer side of the mandrel at intervals, a first air inlet hole communicated with the air inlet outer ring groove is arranged at the outer side of the left part of the shaft seat, at least one second air inlet hole communicated with the bottom wall of the air inlet inner ring groove is arranged at intervals on the bottom wall of the air inlet outer ring groove, a third air inlet hole with one end communicated with the air inlet outer ring groove is arranged in the mandrel, the other end of the third air inlet hole extends to the right end face of the mandrel, the left side of the connecting assembly is provided with a fourth air inlet hole with the left end corresponding to the right end of the third air inlet hole, the other end of the fourth air inlet hole extends to the right end face of the connecting assembly, a fifth air inlet hole corresponding to the right end of the piston ring is arranged in the chuck body, the axle bed right part outside is equipped with the first venthole with the outer annular groove intercommunication of giving vent to anger, the interval is equipped with at least one and the second venthole of the inner annular groove diapire intercommunication of giving vent to anger on the outer annular groove diapire of giving vent to anger, be equipped with the third venthole of one end and the outer annular groove intercommunication of giving vent to anger in the dabber, the other end of third venthole extends to dabber right-hand member face, coupling assembling left side is equipped with about link up and the corresponding fourth venthole of left end and third venthole right-hand member, the right-hand member of fourth venthole and the installation passageway intercommunication of piston ring left side.

The connecting component can comprise a first cover plate and a second cover plate which are fixedly and hermetically installed together, the left end of the chuck body is fixedly and hermetically installed with the right end of the first cover plate, the right end of the mandrel is fixedly and hermetically installed with the left end of the second cover plate, the fourth air inlet comprises a sixth air inlet hole and a seventh air inlet hole, the left side of the second cover plate corresponding to the right end position of the third air inlet hole is provided with the sixth air inlet hole which is communicated from left to right, the left end of the first cover plate is provided with the seventh air inlet hole of which one end corresponds to the sixth air inlet hole and the other end extends to the right 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, the left side of the second cover plate corresponding to the right end position of the third air outlet hole is provided with a fifth air outlet hole which is communicated from left to right, the outer side of the mandrel corresponding to the right side position of the sliding ring and the inner side of the shaft seat are respectively provided with a left bearing and a right bearing, the left end of the shaft seat corresponding to the left side of the left bearing is fixedly provided with a first end cover, the inner side of the first end cover is hermetically provided with a first locking nut screwed on the outer side of the left part of the mandrel, the right end of the shaft seat corresponding to the right side of the right bearing is fixedly provided with a second end cover, and the inner side of the second end cover is hermetically provided with a second locking nut screwed on the outer side of the right part of the mandrel.

A plurality of outer key grooves can be uniformly distributed at the left end of the mandrel at intervals along the circumference, and a locking ring is tightly sleeved on the outer side of the left end of the mandrel.

The interval is equipped with two first sealing members about above-mentioned between the sliding ring outside that corresponds the outer annular groove of admitting air and giving vent to anger position between the outer annular groove and the axle bed inboard, the dabber outside is equipped with the outer annular groove of constant voltage that is located between two first sealing members, the axle bed outside is equipped with the first constant voltage hole with the outer annular groove intercommunication of constant voltage, it is equipped with two second sealing members to correspond to admit air between the inner annular groove and the outer annular groove of giving vent to anger position the sliding ring inboard and the dabber outside between the interval, the sliding ring inboard is equipped with the inner annular groove of constant voltage that is located between two second sealing members, the interval is equipped with at least one second constant voltage hole with the inner annular groove diapire intercommunication in the constant voltage on the outer annular groove diapire of constant voltage.

And a connecting flange can be fixedly arranged on the outer side of the right end of the shaft seat.

The clamping jaw assembly can comprise an adjusting jackscrew, a connecting plate and a clamping jaw, a reset elastic sheet corresponding to each auxiliary piston is fixedly arranged on the outer side of the left end of the clamping chuck body, the outer side of the clamping chuck body corresponding to each auxiliary piston is hinged to the connecting plate, an adjusting threaded through hole is formed in the left end of the connecting plate, an adjusting jackscrew is screwed in the adjusting threaded through hole, the inner end surface of the adjusting jackscrew is abutted to the outer end surface of each auxiliary piston corresponding to each position and the inner side of the reset elastic sheet corresponding to each position on the outer side of the left end of the connecting plate, a first adjusting through hole is formed in the right portion of the reset elastic sheet corresponding to each adjusting jackscrew, the right portion of the connecting plate is hinged to a clamping jaw of which the right end is located on the top right side, and the left portion of the clamping jaw is mounted together with the connecting plate.

The front side of the left part of the clamping jaw can be provided with a fan-shaped annular second adjusting through hole which is communicated with the front and the back, a connecting through hole is arranged on the connecting plate corresponding to the position of the second adjusting through hole, and the connecting plate is sequentially penetrated through the connecting through hole and the second adjusting through hole through a screw rod end and then is installed together with an adjusting bolt which is in threaded connection with a nut.

The chuck body left part outside can be followed the circumference interval equipartition and had two guiding holes that the longitudinal symmetry distributes, and the main piston right part is equipped with the first mounting hole that link up from top to bottom, and fixed mounting has left part salient in the voussoir in the main piston outside in the first mounting hole, and the voussoir upper portion outside and the lower part outside that correspond the main piston outside all are equipped with from a left side to the right side outside-in first inclined plane that contracts, and the terminal surface is equipped with the second inclined plane with first inclined plane assorted in the secondary piston.

The right portion of the wedge block can be provided with second mounting holes, the front end and the rear end of each second mounting hole extend to the outer side of the front portion and the outer side of the rear portion of the main piston respectively, the right end of the main piston is provided with a third mounting hole, the left end of each third mounting hole is communicated with the corresponding second mounting hole, a fixing pin is mounted in each second mounting hole, the outer side of the middle of each fixing pin is provided with a fixing ring groove, and a fixing screw is screwed in each third mounting hole and clamped at the left end of each fixing ring groove.

The installation passageway that the right-hand position of above-mentioned correspondence dabber can include the first straight-hole section that communicates in proper order from left to right, 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 left end, the diameter of taper hole section left end is less than the diameter of taper hole section right-hand member, the top left part outside is the conical surface with taper hole section right part inner wall assorted, sealed mounting has floating piston in the second straight-hole section, the chuck body right part outside interval equipartition that corresponds top left and floating piston position between the right-hand has the fourth mounting hole of a plurality of and taper hole section left part intercommunication.

The chuck body is conveniently connected with the driving motor through the arrangement of the driving device, so that the chuck body rotates to be matched with processing equipment to process a workpiece to be processed, the driving device drives the main piston to move leftwards, the auxiliary piston is pushed into the guide hole by the inner side of the left end of the jaw assembly, the openings between the right ends of all the jaw assemblies are enlarged, one end of the workpiece to be processed is put in, meanwhile, the center of the left end of the workpiece to be processed is abutted against the right end of the top tip, so that the top tip plays a centering role on the workpiece to be processed, then the driving device is controlled to enable the main piston to move rightwards, the main piston pushes the auxiliary piston out of the guide hole, the outer end of the auxiliary piston abuts against the inner side of the left end of the jaw assembly, the opening at the right end of the jaw assembly is reduced, and then the workpiece to be processed is clamped, and each jaw assembly is hinged to the outer side of the chuck body, the clamping jaw assembly has the advantages that the right end of the clamping jaw assembly can float according to different specifications of workpieces to be machined or machining errors on the outer surface in the clamping process, and finally the workpieces to be machined are clamped under the action of the reset elastic sheet, so that the clamping position can be automatically adjusted, the over-positioning phenomenon of the clamping jaw assembly is avoided, the high-precision clamping and positioning function of the workpieces to be machined is realized, the subsequent machining or secondary clamping is facilitated, and the collision and clamping time in the clamping process can be reduced.

Drawings

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

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

Fig. 3 is a schematic top view of the preferred embodiment of the present invention.

Fig. 4 is a schematic top sectional structure view of the preferred embodiment of the present invention.

Fig. 5 is a right-view structural diagram of the preferred embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 1.

FIG. 7 is a schematic cross-sectional view at B-B in FIG. 6.

Fig. 8 is a schematic perspective view of 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 elastic sheet, 7 is a first cover plate, 8 is a second cover plate, 9 is a mandrel, 10 is a sliding ring, 11 is a shaft seat, 12 is a connecting flange, 13 is an adjusting bolt, 14 is a left bearing, 15 is a right 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 block, 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 annular groove, 31 is an air inlet inner annular groove, 32 is an outer annular groove, 33 is an inner annular 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 inlet hole, 40 is a first outlet hole, 41 is a second outlet hole, 42 is a third outlet hole, 43 is a fifth outlet hole, 44 is a sixth outlet hole, 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 regulating through hole, 50 is a second regulating through hole, 51 is a first straight hole section, 52 is a second straight hole section, 53 is a conical hole section, 54 is a fourth mounting hole, 55 is a first inclined surface, and 56 is a second inclined surface.

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 attached figures 1, 2, 3, 4, 5, 6, 7 and 8, the floating clamping jaw comprises a clamping chuck body 1, a tip 2, clamping jaw assemblies, a main piston 3, an auxiliary piston 4 and a driving device, wherein the left end of the clamping chuck body 1 is provided with a left-right through installation channel, the outer side of the left part of the tip 2 is sleeved on the inner side of the right part of the clamping chuck body 1, the outer side of the left part of the clamping chuck body 1 is uniformly distributed with at least two radial through guide holes at intervals along the circumference, each guide hole is internally provided with the auxiliary piston 4 in a sealing and sliding way, the outer side of the clamping chuck body 1 corresponding to the position of each auxiliary piston 4 is hinged with the clamping jaw assembly with the right end positioned at the right side of the tip 2, the outer side of the left part of the clamping chuck body 1 is provided with a resetting elastic sheet 6 which can enable the inner side of the left end of each clamping jaw assembly to be abutted against the outer end surface of the auxiliary piston 4 at the corresponding position, the tip 3 which can enable the right ends of all clamping jaw assemblies to be mutually far away from or close to each other when the tip is arranged in a sealing and sliding way in the clamping chuck body 1 corresponding to move left and right position of the clamping chuck body 1 corresponding to the left position of the clamping jaw assembly is arranged in a sliding way in a sealing and right way, a driving device which can enable the chuck body 1 to rotate and the main piston 3 to move left and right is arranged on the left side of the chuck body 1.

The finial 2 is known in the art according to requirements. In the using process, the chuck body 1 is conveniently connected with the driving motor by arranging the driving device, so that the chuck body rotates to match with processing equipment to process a workpiece to be processed, the driving device drives the main piston 3 to move leftwards, the auxiliary piston 4 is pushed into the guide hole by the inner side of the left end of the jaw assembly, the openings between the right ends of all the jaw assemblies are increased, one end of the workpiece to be processed is put in, meanwhile, the center of the left end of the workpiece to be processed is abutted against the right end of the center 2, so that the center 2 plays a centering role on the workpiece to be processed, then the driving device is controlled to enable the main piston 3 to move rightwards, 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 left end of the jaw assembly, and the workpiece to be processed is clamped after the opening at the right end of the jaw assembly is reduced, and each jaw assembly is hinged to the outer side of the chuck body 1, therefore, the right end of the clamping jaw assembly can float according to different specifications of the workpiece to be machined or machining errors on the outer surface in the clamping process, and finally the workpiece to be machined 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 clamping jaw assembly is avoided, the high-precision clamping and positioning function of the workpiece to be machined is realized, the subsequent machining or secondary clamping is facilitated, and the collision and clamping time in the clamping process can be reduced.

The floating clamping jaw can be further optimized or/and improved according to the actual requirement:

as shown in the attached

drawings

1, 2, 3, 4, 6, 7, 8, the driving device comprises a connecting assembly, a mandrel 9, a sliding ring 10 and a shaft seat 11, a piston ring 5 with the outer side in sealing contact with the inner wall of the left part of the installation channel is fixed at the left end of a main piston 3, the left side of a chuck body 1 is fixedly and hermetically mounted with the right side of the connecting assembly, the left end of the connecting assembly is fixedly mounted with the right end of the mandrel 9 with a hollow structure, the sliding ring 10 is rotatably mounted at the outer side of the middle part of the mandrel 9, the shaft seat 11 is rotatably mounted at the outer side of the sliding ring 10, an air inlet outer ring groove 30 and an air outlet outer ring groove 32 are distributed at intervals around the outer side of the sliding ring 10, an air inlet inner ring groove 31 corresponding to the air inlet outer ring groove 30 is arranged at the inner side of the left part of the sliding ring 10, an air outlet inner ring groove 33 corresponding to the air inlet outer ring groove 30, an air inlet outer ring groove 30 and an air outlet outer ring groove 32, and an air outlet outer ring groove 32 are arranged between the outer ring groove 10 and an inner side of the shaft seat 11 at intervals around the outer ring 10 and an air outlet groove 32 At least one first sealing element 28, at least one second sealing element 29 is arranged between the inner side of the slip ring 10 and the outer side of the mandrel 9 at the left side corresponding to the air inlet inner annular groove 31, between the air inlet inner annular groove 31 and the air outlet inner annular groove 33 and at the right side of the air outlet inner annular groove 33 at intervals, a first air inlet 34 communicated with the air inlet outer annular groove 30 is arranged at the outer side of the left part of the shaft seat 11, at least one second air inlet 35 communicated with the bottom wall of the air inlet inner annular groove 31 is arranged at intervals on the bottom wall of the air inlet outer annular groove 30, a third air inlet 36 with one end communicated with the air inlet outer annular groove 30 is arranged in the mandrel 9, the other end of the third air inlet 36 extends to the right end surface of the mandrel 9, a fourth air inlet with the left end corresponding to the right end of the third air inlet 36 is arranged at the left side of the connecting assembly, the other end of the fourth air inlet extends to the right end surface close to the outer side of the connecting assembly, a fifth air inlet 37 with one end corresponding to the fourth air inlet 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 installation channel on the right side of the piston ring 5, a first air outlet hole 40 communicated with the air outlet outer ring groove 32 is arranged on the outer side of the right part of the shaft seat 11, at least one second air outlet hole 41 communicated with the bottom wall of the air outlet inner ring groove 33 is arranged on the bottom wall of the air outlet outer ring groove 32 at intervals, a third air outlet hole 42 communicated with the air outlet outer ring groove 32 is arranged in the mandrel 9, the other end of the third air outlet hole 42 extends to the right end face of the mandrel 9, a fourth air outlet hole which is through from left to right and corresponds to the right end of the third air outlet hole 42 is arranged on the left side of the connecting component, and the right end of the fourth air outlet hole is communicated with the installation channel on the left side of the piston ring 5.

According to the requirement, the left end of the mandrel 9 is positioned at the left of the shaft seat 11, and the number of the second air inlet holes 35 and the number of the second air outlet holes 41 are respectively one first sealing element 28 and one second sealing element 29, which are both 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, after gas or liquid medium is injected into the first air outlet hole 40, the left end face of the piston ring 5 can be pushed and pressed to move rightwards, then the main piston 3 is driven to move rightwards, and the main piston 3 pushes out the auxiliary piston 4 to enable the right end of the clamping jaw assembly to be close to and clamp a workpiece to be processed; after gaseous or liquid medium is injected into first inlet port 34, can bulldoze piston ring 5 right-hand member face, make it move left, drive main piston 3 move left then, the shell fragment 6 that resets makes jack catch subassembly right-hand member keep away from each other and loosen and wait to process the work piece, 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 remove about, the controllability is good.

As shown in fig. 1, 2, 3, 4, 6, 7, 8, the connecting assembly comprises a first cover plate 7 and a second cover plate 8 which are fixedly and hermetically mounted together, the left end of the chuck body 1 and the right end of the first cover plate 7 are fixedly and hermetically mounted together, the right end of the mandrel 9 and the left end of the second cover plate 8 are fixedly and hermetically mounted together, the fourth air inlet hole comprises a sixth air inlet hole 38 and a seventh air inlet hole 39, the left side of the second cover plate 8 corresponding to the right end of the third air inlet hole 36 is provided with the sixth air inlet hole 38 which is communicated with the left and right, the left end of the first cover plate 7 is provided with the seventh air inlet hole 39, one end of the seventh air inlet hole corresponds to the sixth air inlet hole 38, the other end of the seventh air inlet hole extends to the right end surface of the first cover plate 7 close to the outer side, the fourth air outlet hole comprises a fifth air outlet hole 43 and a sixth air outlet hole 44, the left side of the second cover plate 8 corresponding to the right end of the third air outlet hole 42 is provided with a fifth air outlet hole 43, the left side of the first cover plate 7 is provided with the sixth air outlet hole 44 which is communicated with the left and right, the outer side of the mandrel 9 corresponding to the left and right positions of the slip ring 10 and the inner side of the shaft seat 11 are respectively provided with a left bearing 14 and a right bearing 15, the left end of the shaft seat 11 corresponding to the left position of the left bearing 14 is fixedly provided with a first end cover 16, the inner side of the first end cover 16 is hermetically provided with a first lock nut 18 screwed on the outer side of the left part of the mandrel 9, the right end of the shaft seat 11 corresponding to the right position of the right bearing 15 is fixedly provided with a second end cover 17, and the inner side of the second end cover 17 is hermetically provided with a second lock nut 19 screwed on the outer side of the right part of the mandrel 9.

According to the requirement, a space is arranged between the left end of the piston ring 5 and the right end of the first cover plate 7, the sixth air outlet 44 is communicated with the installation channel on the left side of the piston ring 5, the left bearing 14 is in the prior art, such as a double-row deep groove ball bearing, the right bearing 15 is in the prior art, 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 art framework oil seals. In the use process, through setting up first apron 7, the setting of seventh inlet port 39 is convenient for, seventh inlet port 39 can set up the zigzag, for convenient processing, the radial section of seventh inlet port 39 can extend to the first apron 7 outside, first apron 7 outside is equipped with the sealed plug screw of sealed fixed mounting in the radial section of seventh inlet port 39, through such setting, can introduce the gas or the liquid that inject into in the first inlet port 34 on the axle bed 11 piston ring 5 right side, and then promote piston ring 5 and remove left, the setting of first apron 7 and second apron 8 is convenient for the sealing connection between dabber 9 and the chuck body 1, still be convenient for the installation of main piston 3, through such setting, can improve the sealing performance between when dabber 9 is rotatory and its connecting piece.

As shown in attached figures 1, 2, 3, 4 and 7, a plurality of outer key grooves are uniformly distributed at the left end of the mandrel 9 along the circumference at intervals, and a locking ring 20 is tightly sleeved on the outer side of the left end of the mandrel 9.

According to the demand, the dabber 9 left end has two outer keyways along circumference interval equipartition, and the solid fixed ring of split type optical axis for having now publicly known is enclosed to lock ring 20. In the use, through such setting, be convenient for the transmission between dabber 9 and the drive shaft to be connected for dabber 9 and transmission shaft synchronous rotation are convenient for by the processing of pressing from both sides the work piece and press from both sides and get.

As shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8, two first sealing members 28 are disposed at left and right intervals between the outer side of the slip ring 10 corresponding to the position between the air inlet outer ring groove 30 and the air outlet outer ring groove 32 and the inner side of the shaft seat 11, a constant pressure outer ring groove 45 disposed between the two first sealing members 28 is disposed on the outer side of the shaft seat 9, a first constant pressure hole 47 communicated with the constant pressure outer ring groove 45 is disposed on the outer side of the shaft seat 11, two second sealing members 29 are disposed at left and right intervals between the inner side of the slip ring 10 corresponding to the position between the air inlet inner ring groove 31 and the air outlet inner ring groove 33 and the outer side of the shaft seat 9, a constant pressure inner ring groove 46 disposed between the two second sealing members 29 is disposed 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 disposed at intervals on the bottom wall of the constant pressure outer ring groove 45.

The constant pressure outer ring groove 45 and the constant pressure inner ring groove 46 may not be communicated with each other in bottom wall, as required. During use, by means of the arrangement, axial force applied to the first sealing element 28 on the right side of the air inlet outer ring groove 30 and axial force applied to the second sealing element 29 on the right side of the air inlet inner ring groove 31 when gas or liquid is injected into the air inlet can be offset, axial force applied to the first sealing element 28 on the left side of the air outlet outer ring groove 32 and axial force applied to the second sealing element 29 on the left side of the air outlet inner ring groove 33 when gas or liquid is injected into the air outlet can be offset, fatigue damage of the first sealing element 28 and the second sealing element 29 when unidirectional axial force is applied can be avoided, the service life of the first sealing element 28 and the service life of the second sealing element 29 can be shortened, clamping reliability of the utility model can be improved, and the arrangement enables the first sealing element 28 and the second sealing element 29 to be subjected to axial force which interacts with each other, and sealing effect of the first sealing element 28 and the second sealing element 29 can be enhanced.

As shown in fig. 1, 2, 3, 4, 5, 7 and 8, a connecting flange 12 is fixedly mounted on the outer side of the right end of the shaft seat 11.

In the using process, the connecting flange 12 is arranged, so that the shaft seat 11 is convenient to disassemble and assemble, the installation flexibility of the utility model is improved, and the later maintenance is also convenient.

As shown in fig. 1, 2, 3, 5, 8, the jaw assembly includes an adjusting jackscrew 21, a connecting plate 22 and a jaw 23, a reset elastic sheet 6 corresponding to the auxiliary piston 4 is fixedly installed on the outer side of the left end of the chuck body 1, the connecting plate 22 is hinged on the outer side of the chuck body 1 corresponding to each auxiliary piston 4, an adjusting threaded through hole is formed in the left end of the connecting plate 22, the adjusting jackscrew 21 is screwed in the adjusting threaded through hole, the inner end surface of the adjusting jackscrew 21 abuts against the outer end surface of the auxiliary piston 4 corresponding to the position and the inner side of the reset elastic sheet 6 corresponding to the left end of the connecting plate 22, a first adjusting through hole 49 is formed in the right portion of the reset elastic sheet 6 corresponding to the adjusting jackscrew 21, the jaw 23 with the right end located on the right of the top 2 is hinged on the right portion of the connecting plate 22, and the left portion of the jaw 23 is installed together with the connecting plate 22.

Adjusting the jackscrew 21 as required is well known in the art. In the use, through setting up the shell fragment 6 that resets, can make main piston 3 move the back connecting plate 22 left end that moves to the right and withdraw inwards, then drive jack catch 23 right-hand member outwards open, loosen and treat the processing work piece, through setting up connecting plate 22, the installation and the regulation of jack catch 23 of being convenient for, adjust jackscrew 21 through setting up, can adjust the length that the jackscrew 21 stretched out the regulation screw through-hole according to the specification of the shell fragment 6 that resets and treating the processing work piece, realize jack catch 23 and carry out the clamping to the work piece of treating of different specifications, increase application scope, through setting up first regulation through-hole 49, can adjust the jackscrew 21 fast, adjust convenient and fast.

As shown in fig. 1, 2 and 8, a fan-shaped annular second adjusting through hole 50 which is through from front to back is formed in the front side of the left portion of the clamping jaw 23, a connecting through hole is formed in the connecting plate 22 corresponding to the position of the second adjusting through hole 50, and the connecting plate 22 is installed together through an adjusting bolt 13 which is connected with a nut in a threaded mode after the screw end penetrates through the connecting through hole and the second adjusting through hole 50 in sequence.

The central axis of the second adjustment through hole 50 is collinear with the axis of articulation of the jaw 23, as required. In the use process, the fan-shaped second adjusting through holes 50 are arranged, so that the opening sizes of the right ends of all the clamping jaws 23 can be adjusted, machined workpieces of different specifications can be clamped conveniently, and the application range of the clamping device is enlarged.

As shown in fig. 2, 4 and 7, two guide holes are uniformly distributed at intervals along the circumference on the outer side of the left portion of the chuck body 1, the guide holes are vertically and symmetrically distributed, the first mounting hole is vertically penetrated in the right portion of the main piston 3, the wedge block 24 with the left portion protruding out of the outer side of the main piston 3 is fixedly mounted in the first mounting hole, the first inclined surface 55 contracting from left to right from outside to inside is arranged on the outer side of the upper portion and the outer side of the lower portion of the wedge block 24 corresponding to the outer side of the main piston 3, and the second inclined surface 56 matched with the first inclined surface 55 is arranged on the inner end surface of the auxiliary piston 4.

In the use process, the wedge block 24 is arranged, the processing of the first inclined plane 55 is convenient, meanwhile, the opening size of the clamping jaw 23 can be quickly adjusted according to the specification of a workpiece to be processed, the second inclined plane 56 is arranged, the extension or retraction of the auxiliary piston 4 is slowly carried out, the damage or the service life shortening of the reset elastic sheet 6 when being impacted is avoided, the maintenance cost is increased, meanwhile, the arrangement of the first inclined plane 55 and the second inclined plane 56 can enable the clamping jaw 23 to slowly clamp the workpiece to be processed, the surface of the workpiece to be processed is placed to be clamped, the clamping process can be more accurate, as each connecting plate 22 is hinged and connected to the outer side of the clamping chuck body 1, the floating phenomenon can occur due to the inconsistent stress of the clamping jaws 23 at the two sides in the clamping process at the right end of the connecting plate 22, and the center of the left end of the workpiece to be processed can be abutted against the right end of the tip 2 when the clamping jaw 23 clamps the workpiece to be processed, the centre 2 is enabled to play a role in centering a workpiece to be processed, so that the clamping jaw assembly capable of automatically adjusting the clamping position avoids the over-positioning phenomenon, and the high-precision clamping and positioning functions of the workpiece to be processed are realized.

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

According to the demand, the third mounting hole is to controlling setting. In the using process, the fixing screws 26 are arranged, so that the fixing pins 25 are conveniently positioned, the front and back movement of the fixing pins 25 and the rubbing of the inner walls of the installation channels are prevented from influencing the left and right movement of the main piston 3, and then the clamping action of the clamping jaws 23 is influenced, and by arranging the fixing pins 25, each first inclined surface 55 can be matched with the second inclined surface 56 at the corresponding position, and the clamping precision of the clamping jaws 23 is improved.

As shown in fig. 2, 4 and 7, the installation channel corresponding to the right 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 left to right, 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 left end of the tapered hole section 53, the diameter of the left end of the tapered hole section 53 is smaller than that of the right end of the tapered hole section 53, the outer side of the left part of the center 2 is a conical surface matched with the inner wall of the right part of the tapered hole section 53, a floating piston 27 is hermetically installed in the second straight hole section 52, and a plurality of fourth installation holes 54 communicated with the left part of the tapered hole section 53 are uniformly distributed at intervals on the outer side of the right part of the chuck body 1 corresponding to the position between the left side of the center 2 and the right side of the floating piston 27.

According to requirements, the left 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, during use, sealing between the left side of the main piston 3 and the inner wall of the mounting channel is facilitated, and mounting with the wedge 24 is facilitated, because the left 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 right 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 phenomenon that the main piston 3 suddenly moves to drive the wedge block 24 to rapidly move leftwards so that the auxiliary piston 4 rapidly retracts and then collides 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 clamping jaws 23 synchronously clamp the workpiece to be machined, and similarly, the centre 2 and the clamping jaws 23 synchronously release the workpiece to be machined by moving the main piston 3 rightwards.

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

1. A floating clamping jaw is characterized by comprising a chuck body, a tip, a clamping jaw assembly, a main piston, an auxiliary piston and a driving device, wherein a left end of the chuck body is provided with a mounting channel which is communicated from left to right, the outer side of the left part of the tip is sleeved on the inner side of the right part of the chuck body, at least two guide holes which are communicated in the radial direction are uniformly distributed on the outer side of the left part of the chuck body at intervals along the circumference, the auxiliary piston is hermetically and slidably mounted in each guide hole, the outer side of the chuck body corresponding to the position of each auxiliary piston is hinged with a jaw assembly with the right end positioned at the right side of the top, the outer side of the left part of the chuck body is provided with a reset elastic sheet which can ensure that the inner side of the left end of each jaw assembly is propped against the outer end face of the auxiliary piston at the corresponding position, the main piston which can enable the right ends of all the jaw assemblies to be far away from or close to each other when moving left and right is arranged in the chuck body corresponding to the left position of the center in a sealing and sliding mode, and the driving device which can enable the chuck body to rotate and the main piston to move left and right is arranged on the left side of the chuck body.

2. The floating clamping jaw according to claim 1, wherein the driving device comprises a connecting assembly, a mandrel, a sliding ring and a shaft seat, a piston ring having an outer side in sealing contact with the inner wall of the left portion of the installation passage is fixed to the left end of the main piston, a right side of the chuck body is fixedly and sealingly fixed to the right side of the connecting assembly, a left end of the connecting assembly is fixedly and sealingly fixed to the right end of the mandrel of the hollow structure, a sliding ring is rotatably mounted to the outer side of the central portion of the mandrel, a shaft seat is rotatably mounted to the outer side of the sliding ring, an outer air inlet ring groove and an outer air outlet ring groove are spaced from each other on the left and right of the outer side of the sliding ring, an inner air inlet ring groove corresponding to the outer air inlet ring groove is formed in the left portion of the sliding ring, an inner air outlet ring groove corresponding to the outer air inlet ring groove is formed in the left portion of the sliding ring, and at least one first sealing member is spaced from each other on the left side of the outer side of the sliding ring groove corresponding to the outer side of the outer air outlet ring groove, at least one second sealing element is arranged between the inner slip ring side corresponding to the left side of the air inlet inner ring groove, the air inlet inner ring groove and the air outlet inner ring groove and between the inner side of the slip ring at the right side of the air outlet inner ring groove and the outer side of the mandrel at intervals, a first air inlet hole communicated with the air inlet outer ring groove is arranged at the outer side of the left part of the shaft seat, at least one second air inlet hole communicated with the bottom wall of the air inlet inner ring groove is arranged at intervals on the bottom wall of the air inlet outer ring groove, a third air inlet hole with one end communicated with the air inlet outer ring groove is arranged in the mandrel, the other end of the third air inlet hole extends to the right end face of the mandrel, the left side of the connecting assembly is provided with a fourth air inlet hole with the left end corresponding to the right end of the third air inlet hole, the other end of the fourth air inlet hole extends to the right end face of the connecting assembly, a fifth air inlet hole corresponding to the right end of the piston ring is arranged in the chuck body, the axle bed right part outside is equipped with the first venthole with the outer annular groove intercommunication of giving vent to anger, the interval is equipped with at least one and the second venthole of the inner annular groove diapire intercommunication of giving vent to anger on the outer annular groove diapire of giving vent to anger, be equipped with the third venthole of one end and the outer annular groove intercommunication of giving vent to anger in the dabber, the other end of third venthole extends to dabber right-hand member face, coupling assembling left side is equipped with about link up and the corresponding fourth venthole of left end and third venthole right-hand member, the right-hand member of fourth venthole and the installation passageway intercommunication of piston ring left side.

3. The floating clamping jaw according to claim 2, characterized in that the connecting assembly comprises a first cover plate and a second cover plate which are fixedly and hermetically mounted together, the left end of the chuck body is fixedly and hermetically mounted with the right end of the first cover plate, the right end of the mandrel is fixedly and hermetically mounted with the left end of the second cover plate, the fourth air inlet comprises a sixth air inlet hole and a seventh air inlet hole, the left side of the second cover plate corresponding to the right end position of the third air inlet hole is provided with a sixth air inlet hole which is communicated with the left and right, the left 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 right 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, the left side of the second cover plate corresponding to the right end position of the third air outlet hole is provided with a fifth air outlet hole which is communicated with the left and right, the left bearing and the right bearing are respectively installed on the outer side of the mandrel corresponding to the left side and the right side of the sliding ring and the inner side of the shaft seat, the first end cover is fixedly installed at the left end of the shaft seat corresponding to the left side of the left bearing, the first locking nut screwed on the outer side of the left side of the mandrel is installed on the inner side of the first end cover in a sealing mode, the second end cover is fixedly installed at the right end of the shaft seat corresponding to the right side of the right bearing, and the second locking nut screwed on the outer side of the right side of the mandrel is installed on the inner side of the second end cover in a sealing mode.

4. The floating clamping jaw as claimed in claim 2 or 3, wherein a plurality of external key grooves are uniformly distributed at the left end of the mandrel along the circumference at intervals, and a locking ring is tightly sleeved on the outer side of the left end of the mandrel; or/and two first sealing elements are arranged between the outer side of the sliding ring and the inner side of the shaft seat at intervals left and right corresponding to the position between the air inlet outer ring groove and the air outlet outer ring groove, a constant pressure outer ring groove positioned between the two first sealing elements is arranged on the outer side of the mandrel, a first constant pressure hole communicated with the constant pressure outer ring groove is arranged on the outer side of the shaft seat, two second sealing elements are arranged between the inner side of the sliding ring and the outer side of the mandrel at intervals left and right corresponding to the position between the air inlet inner ring groove and the air outlet inner ring groove, a constant pressure inner ring groove positioned between the two second sealing elements is arranged on the inner side of the sliding ring, and at least one second constant pressure hole communicated with the bottom wall of the constant pressure inner ring groove is arranged on the bottom wall of the constant pressure outer ring groove at intervals; or/and a connecting flange is fixedly arranged on the outer side of the right end of the shaft seat.

5. The floating clamping jaw according to claim 1, 2 or 3, characterized in that the clamping jaw assembly comprises an adjusting jackscrew, a connecting plate and a clamping jaw, a reset spring corresponding to the auxiliary piston is fixedly installed on the outer side of the left end of the clamping jaw body, the outer side of the clamping jaw body corresponding to each auxiliary piston position is hinged with the connecting plate, the left 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 inner end surface of the adjusting jackscrew is abutted against the outer end surface of the auxiliary piston corresponding to the adjusting jackscrew and the inner side of the reset spring corresponding to the connecting plate, the right part of the reset spring corresponding to the adjusting jackscrew is provided with a first adjusting through hole, the right part of the connecting plate is hinged with the clamping jaw with the right end positioned on the right of the center, and the left part of the clamping jaw is installed together with the connecting plate.

6. The floating clamping jaw according to claim 4, characterized in that the clamping jaw assembly comprises an adjusting jackscrew, a connecting plate and a clamping jaw, a reset spring corresponding to the auxiliary piston is fixedly installed on the outer side of the left end of the clamping jaw body, the outer side of the clamping jaw body corresponding to each auxiliary piston position is hinged with the connecting plate, an adjusting threaded through hole is formed in the left end of the connecting plate, an adjusting jackscrew is screwed in the adjusting threaded through hole, the inner end surface of the adjusting jackscrew abuts against the outer end surface of the auxiliary piston corresponding to the position and the inner side of the reset spring corresponding to the position, a first adjusting through hole is formed in the right part of the reset spring corresponding to the position of the adjusting jackscrew, the right part of the connecting plate is hinged with the clamping jaw with the right end of the jackscrew, and the left part of the clamping jaw is installed together with the connecting plate.

7. The floating clamping jaw according to claim 5, characterized in that the front side of the left part of the clamping jaw is provided with a fan-shaped second adjusting through hole which is communicated with the front and the back, the connecting plate corresponding to the position of the second adjusting through hole is provided with a connecting through hole, and the connecting plate is installed together through an adjusting bolt of which the screw end is sequentially penetrated through the connecting through hole and the second adjusting through hole and then is screwed with a nut.

8. The floating clamping jaw according to claim 6, characterized in that the front side of the left part of the clamping jaw is provided with a fan-shaped second adjusting through hole which is communicated with the front and the back, the connecting plate corresponding to the position of the second adjusting through hole is provided with a connecting through hole, and the connecting plate is installed together through an adjusting bolt of which the screw end is sequentially penetrated through the connecting through hole and the second adjusting through hole and then is screwed with a nut.

9. The floating clamping jaw according to claim 1, 2, 3, 6, 7 or 8, characterized in that two guide holes are uniformly distributed at intervals along the circumference at the outer side of the left part of the clamping jaw body, a first mounting hole which is through up and down is arranged at the right part of the main piston, a wedge block with the left part protruding out of the outer side of the main piston is fixedly mounted in the first mounting hole, first inclined planes which shrink from left to right from outside to inside are arranged at 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 inclined plane which is matched with the first inclined planes is arranged on the inner end surface of the auxiliary piston; or/and the right part of the wedge block is provided with a second mounting hole, the front end and the rear end of the second mounting hole respectively extend to the outer side of the front part and the outer side of the rear part of the main piston, the right end of the main piston is provided with a third mounting hole, the left end of the third mounting hole is communicated with the second mounting hole, a fixing pin is mounted in the second mounting hole, the outer side of the middle part of the fixing pin is provided with a fixing ring groove, and a fixing screw with the left end clamped in the fixing ring groove is screwed in the third mounting hole; or/and, the installation passageway that corresponds the right-hand position of dabber includes the first straight-hole section that communicates in proper order from left to right, 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 left end, the diameter of taper hole section left end is less than the diameter of taper hole section right-hand member, top left part outside is the conical surface with taper hole section right part inner wall assorted, sealed mounting has floating piston in the second straight-hole section, the chuck body right part outside interval equipartition that corresponds top left and floating piston position between the right-hand has the fourth mounting hole of a plurality of and taper hole section left part intercommunication.

10. The floating clamping jaw according to claim 4, characterized in that two guide holes are distributed symmetrically at intervals along the circumference on the outer side of the left part of the clamping jaw body, a first mounting hole which is through from top to bottom is arranged on the right part of the main piston, a wedge block with the left part protruding out of the outer side of the main piston is fixedly mounted in the first mounting hole, a first inclined plane which shrinks from left to right from outside to inside is arranged on 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, and a second inclined plane which is matched with the first inclined plane is arranged on the inner end surface of the auxiliary piston; or/and the right part of the wedge block is provided with a second mounting hole, the front end and the rear end of the second mounting hole respectively extend to the outer side of the front part and the outer side of the rear part of the main piston, the right end of the main piston is provided with a third mounting hole, the left end of the third mounting hole is communicated with the second mounting hole, a fixing pin is mounted in the second mounting hole, the outer side of the middle part of the fixing pin is provided with a fixing ring groove, and a fixing screw with the left end clamped in the fixing ring groove is screwed in the third mounting hole; or/and, the installation passageway that corresponds the right-hand position of dabber includes the first straight-hole section that communicates in proper order from left to right, 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 left end, the diameter of taper hole section left end is less than the diameter of taper hole section right-hand member, top left part outside is the conical surface with taper hole section right part inner wall assorted, sealed mounting has floating piston in the second straight-hole section, the chuck body right part outside interval equipartition that corresponds top left and floating piston position between the right-hand has the fourth mounting hole of a plurality of and taper hole section left part intercommunication.