CN115744262A

CN115744262A - Mechanical shaft grabbing device for machine-building

Info

Publication number: CN115744262A
Application number: CN202211547662.1A
Authority: CN
Inventors: 郝瑞卿; 赛云秀; 李雨菲
Original assignee: Xian Technological University
Current assignee: Xian Technological University
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-07
Anticipated expiration: 2042-12-05
Also published as: CN115744262B

Abstract

The invention discloses a mechanical shaft grabbing device for machine manufacturing, which comprises a mechanical arm and a position adjusting assembly, wherein the position adjusting assembly comprises a grabbing driving piece and a position driving piece which are arranged in the mechanical arm; snatch the subassembly, including four gripper jaws that set up around the arm axle center, gripper jaw have an arc piece and with the one end articulated grip block of arc piece, the arc piece other end is articulated with the expansion end of position driving piece, snatch driving piece expansion end and grip block and be close to one side transmission connection who snatchs the driving piece. The invention can realize convenient grabbing of irregular mechanical shafts, has good grabbing effect, reduces damage to the appearance of the mechanical shaft, has the characteristics of good protection and skid resistance in the grabbing process, and has simple structure and compact connection.

Description

Mechanical shaft grabbing device for machine-building

Technical Field

The invention relates to the technical field of mechanical arms, in particular to a mechanical shaft grabbing device for machine manufacturing.

Background

The mechanical manufacturing refers to the industrial sector engaged in the production of various power machines, hoisting and transporting machines, chemical machines, textile machines, machine tools, instruments, meters and other mechanical equipment; in the mechanical manufacturing process, some mechanical shafts need to be grabbed, and the grabbing is most commonly carried out by claws of the mechanical shafts at present.

The original mechanical shaft gripping device for mechanical manufacturing has some defects in the using process:

1. many of the mechanical claws are only limited to gripping a straight mechanical shaft, however, in the aspect of mechanical manufacturing, not only the straight mechanical shaft but also some irregular mechanical shafts with angles or radians are available, so that the gripping effect is poor and the stability is not strong;

2. in the process of grabbing the mechanical shaft, two mechanical claws are clamped at two sides of the mechanical shaft, however, the arrangement needs to align the two mechanical claws at two sides of the mechanical shaft respectively, so that the operation is very complicated, and the grabbing efficiency is low;

3. in the mechanical manufacturing process, lubricating oil is indispensable, and the machined mechanical shaft has a smooth appearance and small friction force, so that the mechanical shaft is difficult to grasp by a claw in the grasping process;

4. after the mechanical shaft is machined, the mechanical shaft is directly clamped through the rigidity of the claw, so that the appearance of the mechanical shaft can be damaged, and even the subsequent use of the mechanical shaft is influenced.

Disclosure of Invention

The invention aims to provide a mechanical shaft grabbing device for machine manufacturing, which is used for solving the problems in the prior art, can grab irregular mechanical shafts conveniently, has good grabbing effect, reduces damage to the appearance of the mechanical shafts, has the characteristics of good protection and skid resistance in the grabbing process, and is simple in structure and compact in connection.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a mechanical shaft gripping device for machine manufacturing, which comprises a mechanical arm and a gripper, wherein the gripper comprises a gripper body,

the position adjusting assembly comprises a grabbing driving piece and a position driving piece which are arranged in the mechanical arm, wherein the movable end of the grabbing driving piece extends out of the mechanical arm through one end of the mechanical arm, and the movable end of the position driving piece penetrates through the side wall of the mechanical arm and is in sliding connection with the mechanical arm;

the grabbing assembly comprises four mechanical claws arranged around the axis of the mechanical arm, each mechanical claw is provided with an arc-shaped block and a clamping block hinged with one end of the arc-shaped block, the other end of the arc-shaped block is hinged with the movable end of the position driving piece, and the movable end of the grabbing driving piece is in transmission connection with one side, close to the grabbing driving piece, of the clamping block;

and the elastic clamping component is fixed on one side of the clamping block, which is close to the movable end of the grabbing driving piece, and is abutted against the outer wall of the mechanical shaft when clamping the mechanical shaft.

Preferably, it is in to snatch the driving piece including setting up hydraulic telescoping rod in the arm, a expansion end of hydraulic telescoping rod passes through the one end of arm stretches out outside the arm, just hydraulic telescoping rod is located the outer expansion end rigid coupling of arm has the connecting axle, it has four square pieces, four to articulate on the connecting axle the other end of square piece is respectively with four the grip block is close to one side of square piece is articulated.

Preferably, the position driving piece is including setting up lift and four sliding blocks in the arm, the sliding block passes through lift is followed the arm lateral wall removes, four sliding trays have been seted up to the arm lateral wall, the sliding block is located in the sliding tray, the sliding block with sliding tray adaptation and sliding connection, the sliding block is close to one side of arm outer wall with the arc piece rotates and is connected.

Preferably, the lifting piece include with the driving motor of arm inner wall rigid coupling, driving motor output rigid coupling has drive gear, the arm inner wall rotates and is connected with four transfer lines, the transfer line top with the drive gear meshing, the sliding block is worn to establish on the transfer line, just the sliding block with transfer line threaded connection.

Preferably, the grip block is close to one side of snatching the driving piece expansion end has seted up the arc recess, the rigid coupling has a plurality of spacing subassemblies in the arc recess, be connected with T shape pole through the elastic component in the spacing subassembly, the middle protruding end of T shape pole stretches out outside the spacing subassembly, it is a plurality of the middle protruding end rigid coupling of T shape pole has an arc connecting plate, the arc connecting plate is kept away from the one end rigid coupling of T shape pole has the flexure strip, the flexure strip is kept away from the one end rigid coupling of arc connecting plate has anti-skidding piece, during to the mechanical axis centre gripping with mechanical shaft outer wall butt.

Preferably, spacing subassembly include with the stopper of grip block rigid coupling, the cavity has been seted up in the stopper, the butt of T shape pole is located in the cavity and with stopper inner wall sliding connection, set up the circular recess in the middle overhang of T shape pole, the rigid coupling has the second spring in the circular recess, the stopper is close to the inner wall rigid coupling of grip block has the damping lever, the damping lever other end stretches into in the circular recess, just the other end of damping lever with second spring rigid coupling, the damping lever overcoat is equipped with first spring, first spring both ends respectively with the stopper inner wall with the butt rigid coupling of T shape pole.

Preferably, the rigid coupling has a plurality of gag lever posts in the cavity, and is a plurality of the both ends of gag lever post respectively with two inner wall rigid couplings of stopper, it is a plurality of the gag lever post with damping rod parallel arrangement, the gag lever post runs through the flat end of T shape pole, just the gag lever post with the flat end sliding connection of T shape pole, the cover is equipped with the third spring on the gag lever post, the third spring both ends respectively with the flat end of T shape pole with the stopper is close to the inner wall rigid coupling of grip block.

Preferably, the anti-slip piece comprises an anti-slip pad fixedly connected with the elastic sheet, one side, close to the mechanical shaft, of the anti-slip pad is fixedly connected with a dense convex block, and the dense convex block is abutted to the outer wall of the mechanical shaft when clamping the mechanical shaft.

Preferably, a sealing gasket is fixedly connected to one side, close to the protruding end of the T-shaped rod, of the flat end of the T-shaped rod.

The invention discloses the following technical effects:

1. under the effect of snatching the driving piece, through the concertina movement who snatchs the driving piece expansion end, four grip blocks align respectively at four ends of mechanical axis, through the flexible of snatching the driving piece expansion end, realize opening and shutting of four grip blocks, the effectual convenience that the centre gripping snatched that has improved, and simultaneously, through the flexible of snatching the driving piece expansion end, the angle of opening and shutting of regulation grip block that can be fine, and then can snatch the mechanical axis of different radians, this grabbing device's application scope can effectual extension, no longer only is in snatching straight mechanical axis.

2. Through setting up the position driving piece, the position driving piece can drive the arc piece and snatch the driving piece and remove to can be according to the position that the mechanical axis is located, adjust the position of arc piece and grip block on the grabbing device.

3. Set up elasticity centre gripping subassembly on the grip block, utilize elasticity centre gripping subassembly and mechanical axis contact, can realize the better laminating mutually of elasticity centre gripping subassembly and mechanical axis on the one hand, utilize the elastic capacity of elasticity centre gripping subassembly simultaneously, the damage that the grip block that reduces that can be fine caused mechanical axis in the centre gripping process to play fine protective capacities to mechanical axis.

4. Through setting up elasticity centre gripping subassembly, can improve the contact frictional force of mechanical axis and grip block to improve clamping device's anti-skidding effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the structure of the driving rod of the present invention;

FIG. 3 is a schematic structural view of a hydraulic telescopic rod according to the present invention;

FIG. 4 is a schematic elevational view, partially in section, of the present invention;

FIG. 5 is an enlarged partial view of the portion A of FIG. 4;

wherein, 1, a mechanical arm; 2. a sliding groove; 3. a transmission gear; 4. a transmission rod; 5. a slider; 6. an arc-shaped block; 7. a clamping block; 8. a hydraulic telescopic rod; 9. a connecting shaft; 10. a first connection block; 11. a square block; 12. a second connecting block; 13. an arc-shaped connecting plate; 14. an elastic sheet; 15. a non-slip mat; 16. densely packing the bumps; 17. a T-shaped rod; 18. a limiting block; 19. a damping lever; 20. a first spring; 21. a limiting rod; 22. a third spring; 23. a gasket; 24. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-5, the invention provides a mechanical shaft gripping device for machine manufacturing, which comprises a mechanical arm 1, and further comprises a position adjusting assembly, wherein the position adjusting assembly comprises a gripping driving piece and a position driving piece which are arranged in the mechanical arm 1, the movable end of the gripping driving piece extends out of the mechanical arm 1 through one end of the mechanical arm 1, and the movable end of the position driving piece penetrates through the side wall of the mechanical arm 1 and is in sliding connection with the mechanical arm 1; the grabbing assembly comprises four mechanical claws arranged around the axis of the mechanical arm 1, each mechanical claw is provided with an arc-shaped block 6 and a clamping block 7 hinged with one end of the arc-shaped block 6, the other end of the arc-shaped block 6 is hinged with the movable end of the position driving piece, and the movable end of the grabbing driving piece is in transmission connection with one side, close to the grabbing driving piece, of the clamping block 7; the elastic clamping component is fixed on one side, close to the movable end of the grabbing driving piece, of the clamping block 7, and the elastic clamping component is abutted to the outer wall of the mechanical shaft when clamping the mechanical shaft.

When using, arm 1 moves to mechanical axis position, position driving piece work, the drive snatchs driving piece and arc piece 6 and removes along 1 extending direction of arm, thereby it removes along 1 extending direction of arm to drive four grip blocks 7, after the suitable position, it is flexible to snatch the expansion end of driving piece, the expansion end that snatchs the driving piece drives grip block 7 and removes, four grip blocks 7 are close to each other or keep away from each other, realize four grip blocks 7 and perhaps loosen the centre gripping of four ends of mechanical axis, can finely tune the position of four grip blocks 7 through the position driving piece afterwards, so that better carry out the centre gripping to the mechanical axis.

Specifically, the arc-shaped block 6 and the clamping block 7 are both arc-shaped structures, and the arc-shaped block 6 and the clamping block 7 are connected and hinged through a rotating shaft.

Further optimize the scheme, snatch the driving piece including setting up the hydraulic telescoping rod 8 in arm 1, outside the arm 1 was stretched out to one end that hydraulic telescoping rod 8 passes through arm 1 in the expansion end rigid coupling of hydraulic telescoping rod 8 outside being located arm 1, and hydraulic telescoping rod 8 is located arm 1, and articulated on the connecting axle 9 have four square pieces 11, and four square pieces 11's the other end is articulated with one side that four grip blocks 7 are close to square piece 11 respectively.

Arm 1 is provided with well cavity, hydraulic telescoping rod 8 is located the cavity intracavity, hydraulic telescoping rod 8's expansion end is fixed with connecting axle 9, and simultaneously, hydraulic telescoping rod 8 is supported through connecting axle 9, after hydraulic oil is inputed in to hydraulic telescoping rod 8, hydraulic telescoping rod 8's both ends are removed to both sides, and hydraulic telescoping rod 8 is located arm 1 outer one side and drives connecting axle 9 and remove, connecting axle 9 drives square piece 11 and removes, it is close to each other or keeps away from to drive four grip blocks 7 by square piece 11.

Specifically, the outer wall of the connecting shaft 9 is fixedly connected with four first connecting blocks 10, one side, far away from the connecting shaft 9, of each first connecting block 10 is hinged to a square block 11, one side, close to the square block 11, of each clamping block 7 is fixedly connected with a second connecting block 12, and the second connecting blocks 12 are hinged to the other end of the square block 11.

Further, square 11 is set up in the elasticity centre gripping subassembly and is close to the one side of arm 1, can understand that square 11 is closer to the arc piece with the junction of centre gripping piece 7 for the elasticity centre gripping subassembly. During this kind of setting, the existence of square piece 11 does not influence the normal centre gripping of elasticity centre gripping subassembly to the mechanical axis.

Further, the opening has been seted up to arm 1 lateral wall, and the opening is used for outside hydraulic pressure to provide device (not shown in the figure) to be connected with hydraulic telescoping rod 8 to provide or extract hydraulic oil to hydraulic telescoping rod 8, in order to realize that hydraulic telescoping rod 8's expansion end is flexible.

Further optimize the scheme, the position driving piece is including setting up lift and four sliding blocks 5 in arm 1, and sliding block 5 removes along 1 lateral wall of arm through the lift, and four sliding tray 2 have been seted up to 1 lateral wall of arm, and sliding block 5 is located sliding tray 2, sliding

block

5 and 2 adaptations of sliding tray and sliding connection, and sliding block 5 rotates with arc piece 6 to be connected near one side of 1 outer wall of arm.

Four sliding chutes 2 have been seted up on the 1 lateral wall of arm, and four sliding chutes 2 correspond the setting with four arc piece 6, and sliding chute 2 is used for supplying sliding block 5 to remove, carries on spacingly simultaneously to sliding block 5, and under the effect of lifter, sliding block 5 removes in sliding chute 2, realizes that sliding block 5 drives arc piece 6 and removes along 1 outer wall of arm, drives the extending direction removal of grip block 7 along arm 1 by arc piece 6.

Further optimize scheme, the lift piece includes the driving motor with 1 inner wall rigid coupling of arm, and the driving motor output rigid coupling has drive gear 3, and 1 inner wall of arm rotates and is connected with four

transfer lines

4, and 4 tops of transfer lines are engaged with drive gear 3, and sliding block 5 wears to establish on transfer line 4, and sliding

block

5 and 4 threaded connection of transfer line. The driving motor is fixed in the arm 1, and driving motor drives transmission gear 3 rotatory, and the external tooth of transmission gear 3 meshes with the top of transfer line 4, realizes that transmission gear 3 drives four transfer lines 4 rotatory, because sliding block 5 is located sliding tray 2, and sliding tray 2 is spacing to sliding block 5, and sliding block 5 and transfer line 4 threaded connection simultaneously, therefore sliding block 5 moves along transfer line 4 under driving motor's effect.

Specifically, the transmission rod 4 is vertically arranged in the mechanical arm 1, two ends of the transmission rod 4 are in sliding connection with the inner wall of the mechanical arm 1, a fixed driven gear is sleeved at the top of the transmission rod 4, and the driven gear is meshed with the transmission gear 3, so that the transmission gear 3 can drive the driven gear to rotate.

Further optimization scheme, grip block 7 is close to one side of snatching the driving piece expansion end and has been seted up the arc recess, the rigid coupling has a plurality of spacing subassemblies in the arc recess, be connected with T shape pole 17 through the elastic component in the spacing subassembly, the middle protruding end of T shape pole 17 stretches out outside the spacing subassembly, the middle protruding end rigid coupling of a plurality of T shape poles 17 has an arc connecting plate 13, the one end rigid coupling that T shape pole 17 was kept away from to arc connecting plate 13 has flexure strip 14, the one end rigid coupling that flexure strip 14 kept away from arc connecting plate 13 has anti-skidding piece, the anti-skidding piece is to mechanical axle outer wall butt when the centre gripping.

The arc recess is used for holding spacing subassembly, under the effect of elastic component in spacing subassembly, make T shape pole have elasticity, the middle protruding end of a plurality of T shape poles 17 is fixed with arc connecting plate 13, this arc connecting plate 13 should with arc recess looks adaptation, and arc connecting plate 13 has anti-skidding piece through flexure strip 14 rigid coupling, cooperate through elastic component and T shape pole 17, make anti-skidding piece have elasticity, on the one hand carry out the centre gripping to the mechanical axis, on the other hand, the increase is protected the mechanical axis outer wall with mechanical axis contact friction's while.

Specifically, the T-bar 17 has a medial protruding end and a flat end that cooperate to form the T-bar 17.

Further optimize the scheme, spacing subassembly includes the stopper 18 with the rigid coupling of grip block 7, set up the cavity in stopper 18, the butt of T shape pole 17 is located the cavity and with stopper 18 inner wall sliding connection, set up the circular recess in the middle overhang of T shape pole 17, the rigid coupling has second spring 24 in the circular recess, stopper 18 is close to the inner wall rigid coupling of grip block 7 and has damping rod 19, the damping rod 19 other end stretches into in the circular recess, and damping rod 19's the other end and second spring 24 rigid coupling, damping rod 19 overcoat is equipped with first spring 20, first spring 20 both ends respectively with stopper 18 inner wall and T shape pole 17's butt rigid coupling.

The cavity is matched with the flat end of the T-shaped rod 17, the flat end of the T-shaped rod 17 is located in the cavity and limited through the limiting block 18, the middle protruding end of the T-shaped rod 17 extends out of the limiting block 18 to be connected with the arc-shaped connecting plate 13, the flat end of the T-shaped rod 17 is provided with an opening, the opening is communicated with a circular groove in the middle protruding end of the T-shaped rod 17, the damping rod 19 extends into the circular groove through the opening, meanwhile, the tail end of the damping rod 19 is fixed with the second spring 24, under the action of the first spring 20 and the second spring 24, the T-shaped rod 17 slides in a damping mode through the circular groove and the damping rod 19, meanwhile, the elastic capacity of the arc-shaped connecting plate 13 is improved through the arrangement of the first spring 20 and the second spring 24, and the anti-skid piece is enabled to be better attached to a mechanical shaft.

According to the further optimization scheme, a plurality of limiting rods 21 are fixedly connected in the cavity, two ends of the limiting rods 21 are fixedly connected with two inner walls of the limiting block 18 respectively, the limiting rods 21 and the damping rods 19 are arranged in parallel, the limiting rods 21 penetrate through the flat ends of the T-shaped rods 17, the limiting rods 21 are connected with the flat ends of the T-shaped rods 17 in a sliding mode, third springs 22 are sleeved on the limiting rods 21, and two ends of the third springs 22 are fixedly connected with the flat ends of the T-shaped rods 17 and the inner walls, close to the clamping block 7, of the limiting block 18 respectively.

Gag lever post 21 evenly distributed in stopper 18 establishes third spring 22 at gag lever post 21 outer wall cover, under the effect of gag lever post 21 for T shape pole 17's flush end removes and is difficult for producing the skew, and gag lever post 21 and T shape pole 17's damping slip and third spring 22 elastic capacity should be located, reduction grip block 7 that can be fine causes the damage to the mechanical axis at the centre gripping in-process, thereby plays fine protective capacities to the mechanical axis.

According to a further optimized scheme, the anti-skid piece comprises an anti-skid pad 15 fixedly connected with the elastic sheet 14, a dense convex block 16 is fixedly connected to one side, close to the mechanical shaft, of the anti-skid pad 15, and the dense convex block 16 abuts against the outer wall of the mechanical shaft when clamping the mechanical shaft. The mechanical shaft is clamped under the action of the anti-skid pads 15 and the dense lugs 16.

Wherein, the non-slip mat 15 is arc-shaped, and its terminal surface department is provided with evenly distributed's intensive lug 16, through the effect of intensive lug 16, area of contact when increasing non-slip mat 15 and the centre gripping of mechanical axis to play fine antiskid effect.

Specifically, the anti-slip pad 15 needs to extend out of the arc-shaped groove to effectively clamp the mechanical shaft.

Further, the mat 15 and the dense bumps 16 are preferably rubber members.

In a further optimized scheme, a sealing gasket 23 is fixedly connected to one side, close to the protruding end of the T-shaped rod 17, of the flat end of the T-shaped rod 17. A sealing gasket 23 for mechanical oil sealing of the internal damping effect is arranged in the cavity of the limiting block 18.

Specifically, when using, arm 1 moves to mechanical axis position, driving motor work drives drive gear 3 rotatory, drive gear 3 drives transfer line 4 rotatory and then drives sliding block 5 and remove along sliding tray 2, after the suitable position, hydraulic telescoping rod 8's expansion end extension, hydraulic telescoping rod 8's expansion end drives grip block 7 and removes, four grip blocks 7 keep away from each other, can finely tune four grip blocks 7's position through driving motor afterwards, treat four grip blocks 7 and four ends of mechanical axis when corresponding, hydraulic telescoping rod 8's expansion end shrink, four grip blocks 7 are close to and carry out the centre gripping to the mechanical axis fixedly.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. The utility model provides a mechanical axis grabbing device for machine-building, includes arm (1), its characterized in that: also comprises the following steps of (1) preparing,

the position adjusting assembly comprises a grabbing driving piece and a position driving piece which are arranged in the mechanical arm (1), wherein the movable end of the grabbing driving piece extends out of the mechanical arm (1) through one end of the mechanical arm (1), and the movable end of the position driving piece penetrates through the side wall of the mechanical arm (1) and is connected with the mechanical arm (1) in a sliding mode;

the grabbing assembly comprises four mechanical claws arranged around the axis of the mechanical arm (1), each mechanical claw is provided with an arc-shaped block (6) and a clamping block (7) hinged with one end of the arc-shaped block (6), the other end of the arc-shaped block (6) is hinged with the movable end of the position driving piece, and the movable end of the grabbing driving piece is in transmission connection with one side, close to the grabbing driving piece, of the clamping block (7);

the elastic clamping assembly is fixed on one side, close to the movable end of the grabbing driving piece, of the clamping block (7), and the elastic clamping assembly is abutted to the outer wall of the mechanical shaft when clamping the mechanical shaft.

2. The machine axis gripping device for machine building of claim 1, characterized in that: snatch the driving piece including setting up hydraulic telescoping rod (8) in arm (1), a expansion end of hydraulic telescoping rod (8) passes through the one end of arm (1) is stretched out outside arm (1), just hydraulic telescoping rod (8) are located the outer expansion end rigid coupling of arm (1) has connecting axle (9), it has four square pieces (11), four to articulate on connecting axle (9) the other end of square piece (11) is respectively with four grip block (7) are close to one side of square piece (11) is articulated.

3. The machine axis gripping device for machine building of claim 1, characterized in that: the position driving part comprises a lifting part and four sliding blocks (5) which are arranged in the mechanical arm (1), the sliding blocks (5) are arranged on the side wall of the mechanical arm (1) in a passing mode, the sliding blocks (5) are arranged in the sliding grooves (2), the sliding blocks (5) are matched with and connected with the sliding grooves (2) in a sliding mode, and the sliding blocks (5) are close to one side of the outer wall of the mechanical arm (1) and connected with the arc-shaped blocks (6) in a rotating mode.

4. The machine axis gripping device for machine building of claim 3, characterized in that: the lifting piece comprises a driving motor fixedly connected with the inner wall of the mechanical arm (1), a transmission gear (3) is fixedly connected with the output end of the driving motor, four transmission rods (4) are connected to the inner wall of the mechanical arm (1) in a rotating mode, the top of each transmission rod (4) is meshed with the transmission gear (3), a sliding block (5) is arranged on each transmission rod (4) in a penetrating mode, and the sliding block (5) is in threaded connection with the transmission rods (4).

5. The mechanical axis grasping apparatus for machine manufacturing according to claim 1, wherein: clamping block (7) are close to one side of snatching the driving piece expansion end has seted up the arc recess, the rigid coupling has a plurality of spacing subassemblies in the arc recess, be connected with T shape pole (17) through the elastic component in the spacing subassembly, the middle overhang of T shape pole (17) stretches out outside the spacing subassembly, it is a plurality of the middle overhang rigid coupling of T shape pole (17) has an arc connecting plate (13), keep away from arc connecting plate (13) the one end rigid coupling of T shape pole (17) has flexible piece (14), keep away from in flexible piece (14) the one end rigid coupling of arc connecting plate (13) has anti-skidding piece, when anti-skidding piece to the mechanical axis centre gripping with mechanical axis outer wall butt.

6. The machine axis gripping device for machine building of claim 5, wherein: the spacing subassembly include with stopper (18) of grip block (7) rigid coupling, the cavity has been seted up in stopper (18), the butt of T shape pole (17) is located in the cavity and with stopper (18) inner wall sliding connection, circular recess has been seted up in the middle overhang of T shape pole (17), the rigid coupling has second spring (24) in the circular recess, stopper (18) are close to the inner wall rigid coupling of grip block (7) has damping rod (19), damping rod (19) other end stretches into in the circular recess, just the other end of damping rod (19) with second spring (24) rigid coupling, damping rod (19) overcoat is equipped with first spring (20), first spring (20) both ends respectively with stopper (18) inner wall with the butt rigid coupling of T shape pole (17).

7. The machine-building machine shaft grasping apparatus according to claim 6, wherein: the rigid coupling has a plurality of gag lever posts (21), and is a plurality of in the cavity the both ends of gag lever post (21) respectively with two inner wall rigid couplings of stopper (18), and is a plurality of gag lever post (21) with damping rod (19) parallel arrangement, gag lever post (21) run through the flat end of T shape pole (17), just gag lever post (21) with the flat end sliding connection of T shape pole (17), the cover is equipped with third spring (22) on gag lever post (21), third spring (22) both ends respectively with the flat end of T shape pole (17) with stopper (18) are close to the inner wall rigid coupling of grip block (7).

8. The machine axis gripping device for machine building of claim 5, wherein: the anti-slip piece comprises an anti-slip pad (15) fixedly connected with the elastic sheet (14), one side, close to the mechanical shaft, of the anti-slip pad (15) is fixedly connected with a dense lug (16), and the dense lug (16) abuts against the outer wall of the mechanical shaft when clamping the mechanical shaft.

9. The machine-building machine shaft grasping apparatus according to claim 6, wherein: and a sealing gasket (23) is fixedly connected to one side of the flat end of the T-shaped rod (17) close to the protruding end of the T-shaped rod (17).