CN212170132U

CN212170132U - Be used for auto parts hollow tube fixture

Info

Publication number: CN212170132U
Application number: CN201922053556.8U
Authority: CN
Inventors: 宋海钦; 李亚涛
Original assignee: Zhengzhou Ruishengde Mechanical Equipment Co ltd
Current assignee: Zhengzhou Ruishengde Mechanical Equipment Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-12-18
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a be used for auto parts hollow tube fixture, the problem of solution is that semicircle formula frock preparation requires height when present hollow tube is fixed, and adaptability is poor, and when part size error is great, is difficult to fix, and compatibility is poor, and the hollow tube excessively atress takes place to warp easily, and the sliding force is out of tolerance during later stage assembly, causes the appearance of wastrel. The utility model discloses a bottom plate, bottom plate top are equipped with fixed disk and rotatory ring, are equipped with the intermediate ring between rotatory ring and the fixed disk, and the centre of bottom plate and fixed disk is equipped with the centre gripping hole, and the rotatory ring outside is equipped with driving system, the fixed disk on be equipped with guide way and fixed slot, cooperate with the guide way and be equipped with a plurality of supporting rod, be equipped with the fixed plate on the fixed slot. The utility model is used for the processing and the assembly of the slip hollow tube of the intermediate shaft of automobile steering system, the centre gripping of mainly used hollow tube, indeformable behind the hollow tube centre gripping, power retentivity is excellent, processing simple manufacture, it is convenient to change.

Description

Be used for auto parts hollow tube fixture

Technical Field

The utility model relates to an auto parts processing field, concretely relates to be used for auto parts hollow tube fixture.

Background

The hollow pipe for the automobile parts is used for an intermediate shaft connected between a steering column and a steering engine in an automobile steering system, and the intermediate shaft has the function of ensuring that the intermediate shaft can still be reliably connected when the steering column is adjusted up and down. When the existing hollow pipe is fixed, the hollow pipe needs to be clamped and fixed by clamping equipment, the existing clamping equipment for clamping the hollow pipe is clamped by a semicircular tool, and the hollow pipe is clamped in a semicircular groove; after the hollow pipe is fixed, the hollow pipe is clamped by the clamping equipment through a hydraulic cylinder, the stress direction of the hollow pipe is consistent with the direction of a power source and is all directed to a part, the clamping position of the hollow pipe can be adjusted only at a piston rod, and the force is kept to be influenced by a hydraulic system; and the clamping force of the hydraulic cylinder has hysteresis on the control of the hollow pipe, the hollow pipe is easy to deform due to excessive stress, and the sliding force is over poor during later assembly, so that defective products are generated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that semicircle formula frock preparation requires highly when present hollow tube is fixed, and adaptability is poor, and when part size error is great, is difficult to fix, and compatibility is poor, and the easy excessive atress of heart pipe takes place to warp, and the sliding force is super poor during later stage assembly, causes the appearance of wastrel, provides one kind and is used for auto parts hollow tube fixture and clamping method thereof.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a be used for auto parts hollow tube fixture, is equipped with fixed disk and rotatory ring including bottom plate, bottom plate top, is equipped with the intermediate ring between rotatory ring and the fixed disk, and the centre of bottom plate and fixed disk is equipped with the centre gripping hole, is equipped with driving system in the rotatory ring outside, the fixed disk on be equipped with guide way and fixed slot, be equipped with a plurality of supporting rod with the guide way cooperation, be equipped with the fixed plate on the fixed slot.

The inner side of the rotating ring is provided with a top block, the middle of the rotating ring is provided with a guide disc, and the guide disc is provided with an arc-shaped groove.

The top blocks are four, the inner side surfaces of the four top blocks are arc-shaped surfaces, and the arc-shaped tracks of the inner side surfaces are Archimedes spiral lines.

One end of the clamping rod is provided with an outer arc surface, the other end of the clamping rod is provided with a clamping surface, the upper part of the clamping rod is provided with a guide wheel, and the guide wheel extends into the arc-shaped groove; the outer arc surface is matched with the inner side surface of the top block.

The arc-shaped groove on the guide disc comprises an outer ring groove and an inner ring groove, the outer ring groove and the inner ring groove are connected through a transition groove, and the arc-shaped track of the inner ring groove is an Archimedes spiral line.

The power system comprises a servo motor, a coupler is arranged on the servo motor, a lead screw is connected with the coupler and is provided with a nut, and the lead screw is sleeved with a nut which is connected with a rotating ring through a swing arm.

The device for preventing the foreign matters from falling comprises a slide rail, a baffle and a cylinder, wherein the two sides of the baffle are in sliding fit with the slide rail, and a piston rod of the cylinder is connected with the baffle.

One side of the fixing plate is clamped in the fixing groove, and the other side of the fixing plate extends to the upper part of the intermediate ring.

A clamping method for a hollow tube clamping mechanism of an automobile part comprises the following steps: firstly, extending a hollow pipe into a clamping hole;

secondly, the servo motor transmits torque to the screw rod through the coupler, the screw rod rotates to drive the nut to move forwards along the screw rod, and the swing arm is further pushed forwards;

when the swing arm moves forward, the rotating ring rotates clockwise to drive the guide disc to rotate clockwise, so that the guide wheel of the clamping rod slides into the inner ring groove from the outer ring groove through the transition groove;

fourthly, after the guide wheel enters the inner ring groove, the swing arm continues to advance, and the hollow pipe is clamped.

The guide wheel is arranged in the inner ring groove, the clamping rods move inwards under the pushing of the top block, the guide wheel slides in the inner ring groove, and the four clamping rods achieve the effect of simultaneously clamping the hollow pipe; when the hollow pipe is loosened, the rotating ring rotates anticlockwise, the guide wheel slides into the outer annular groove from the inner annular groove instantly, and the fast-forward type simultaneous loosening of the hollow pipe is achieved.

The utility model is used for the processing and the assembly of the sliding hollow tube of the intermediate shaft of the automobile steering system, is mainly used for the clamping of the hollow tube, does not deform after the hollow tube is clamped, has excellent force retention, simple processing and manufacturing and convenient replacement; the clamping force is controlled by adopting a servo motor, the clamping position and the stress size of the hollow tube are controllable, the stress direction and the power source direction are not in the same direction, the Archimedes spiral principle is adopted, the hollow stroke in the clamping process adopts a fast forward mode, the stress and the force are kept clamped gradually by adopting a spiral line, the stress direction of the hollow tube is concentric stress, the swing arm is used as a force arm, the force arm is longer, and the energy consumption of the power source can be reduced.

Drawings

Fig. 1 is a structural schematic diagram of the explosion state of the utility model;

FIG. 2 is a schematic view of the structure of the present invention in an assembled state;

FIG. 3 is a schematic view of the partially enlarged structure of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the guide plate when the clamping rod of the present invention is in the open state;

FIG. 5 is a schematic view of the internal structure of the guiding plate when the nut of the present invention is moved to the clamping position;

FIG. 6 is an enlarged view of the inner part of the guide plate of the present invention;

fig. 7 is a schematic cross-sectional structure of the present invention;

FIG. 8 is a schematic structural view of the back foreign matter falling prevention device of the present invention;

fig. 9 is a schematic structural view of the fixing disc of the present invention;

fig. 10 is a schematic view of the rotary ring structure of the present invention;

fig. 11 is a schematic view of the guiding disc structure of the present invention;

fig. 12 is a schematic structural view of the top block of the present invention;

fig. 13 is a schematic structural view of the clamping rod of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1 to 13, a hollow tube clamping mechanism for automobile parts comprises a bottom plate 1, a fixed plate 2 and a rotating ring 3 are arranged above the bottom plate 1, a middle ring 8 is arranged between the rotating ring 3 and the fixed plate 2, a clamping hole 6 is arranged between the bottom plate 1 and the fixed plate 2, a power system 4 is arranged outside the rotating ring 3, a guide groove 21 and a fixing groove 22 are arranged on the fixed plate 2, a plurality of clamping rods 23 are matched with the guide groove 21, and a fixing plate 24 is arranged on the fixing groove 22. The utility model discloses during the use, the hollow tube is worn out from centre gripping hole 6, and driving system 4 drives rotatory ring 3 and rotates, and rotatory ring 3 promotes supporting rod 23 and moves to the inboard, and then the hollow tube is pressed from both sides tightly. The outer side of the bottom plate 1 is provided with a shaft sleeve hole for connecting with other equipment.

The inner side of the rotating ring 3 is provided with a top block 31, the middle of the rotating ring 3 is provided with a guide disc 5, and the guide disc 5 is provided with an arc-shaped groove 51. Rotatory ring 3, positioning disk 5, kicking block 31 is fixed connection with rotatory ring 3, it is rotatory along with rotatory ring 3's rotation, fixed disk 2 is for fixing on the bottom plate, the working process is for keeping static state, clamping rod 23 is linear motion in guide way 21, clamping rod 23 has four, when four clamping rod 23 all moved to the inboard, can press from both sides the hollow tube in centre gripping hole 6 simultaneously tightly, when four clamping rod 23 all moved to the outside, loosen the hollow tube in centre gripping hole 6 simultaneously.

The top block 31 has four blocks, the inner side surface 311 of the four top blocks 31 is an arc surface, and the arc track of the inner side surface 311 is an archimedes spiral line. The four top blocks 31 have the same structure, and the clamping rods 23 are gradually pushed inwards along with the contact of the inner side surfaces of the top blocks 31 and the clamping rods 23, so that the hollow tube is clamped.

According to the Archimedes' spiral formula:

in the formula: radius r, peripheral speed v, linear motion speed w;

according to this formula, the shape of the archimedean spiral is unchanged when the peripheral speed is doubled simultaneously with the linear speed, so that the archimedean spiral belongs to the constant speed ratio spiral and is also called equidistant spiral because it is extended equidistantly in each rotation period.

The utility model discloses an Archimedes helix principle, in the mechanism, arc 51 on the positioning disk 5 drives the leading wheel and realizes fast-forwarding and fast-backing, when supporting rod 23 fast-forwarded outer arcwall 233 and the inboard cambered surface contact of kicking block, the clamp force begins to be effective, and press from both sides the hollow tube slowly along with rotatory ring 3 at the uniform velocity rotation, make four supporting rods 23 realize pressing from both sides tightly simultaneously and loosen simultaneously to the hollow tube, make the hollow tube atress direction be concentric atress, the swing arm is as the arm of force, the arm of force is longer, reducible power supply energy consumption.

One end of the clamping rod 23 is provided with an outer arc surface 233, the other end of the clamping rod is provided with a clamping surface 232, the upper part of the clamping rod 23 is provided with a guide wheel 231, and the guide wheel 231 extends into the arc-shaped groove 51; the outer arc surface 233 is matched with the inner side surface 311 of the top block 31. The guide wheel 231 is matched with the arc-shaped groove 51, and the four clamping surfaces 232 are matched for clamping the outer wall of the hollow pipe. Clamping face 232 is the arc, and the arcwall face of clamping face 232 cooperatees with the cambered surface of hollow tube, but compatible error part in certain extent, and application range is wide.

The arc-shaped groove 51 on the guide disc 5 comprises an outer ring groove 511 and an inner ring groove 512, the outer ring groove 511 is connected with the inner ring groove 512 through a transition groove 513, and the arc-shaped track of the inner ring groove 512 is an Archimedes spiral line; the arc-shaped track of the inner ring groove 512 is matched with the arc-shaped track of the inner side surface of the top block 31. The arc-shaped track of the inner ring groove (512) is an Archimedes spiral line of a fast forward and fast backward path, when the guide wheel 231 is positioned in the outer ring groove 511 at the initial position, the guide wheel 231 instantaneously slides into the inner ring groove 512 through the transition groove 513 along with the clockwise rotation of the rotating ring 3, and the fast-forward type simultaneous clamping of the hollow pipe is realized; in the inner ring groove 512, the clamping rods move inwards under the pushing of the top block, the guide wheel 231 slides in the inner ring groove 512, and the four clamping rods achieve the effect of simultaneously clamping the hollow tube parts because the arc-shaped track of the inner ring groove 512 is an Archimedes spiral line; when the hollow pipe is loosened, the rotating ring 3 rotates counterclockwise, and the guide wheel 231 instantaneously slides from the inner annular groove 512 into the outer annular groove 511, so that the hollow pipe is loosened at the same time in a fast-forward manner.

The power system 4 comprises a servo motor 41, a coupler 42 is arranged on the servo motor 41, a screw rod 43 is connected with the coupler 42, a nut 44 is sleeved on the screw rod 43, and the nut is connected with the rotating ring 3 through a swing arm 46. The utility model discloses servo motor 41 transmits the moment of torsion to lead screw 43 through shaft coupling 42 on, lead screw 43 is rotatory to drive nut 44 along lead screw 43 back-and-forth movement, and then with swing arm antedisplacement, rotatory ring 3 clockwise rotates when the swing arm gos forward, remove the clamping face 232 of four holding rod 23 to on the hollow tube by the centre gripping fast, the swing arm continues to go forward, the inside kicking block 31 of rotatory ring 3 and the contact of outer arc surface 233 of holding rod 23, the swing arm continues to go forward once more, it is tight with the hollow tube clamp to the clamping face of holding rod 23. The utility model discloses a controllable supporting rod 23 in servo motor control nut's position is to the size of hollow tube clamp force to control the clamp force and stably keep.

The clamping is carried out by adopting a servo motor, the clamping position and the stress are controllable, the stress direction is not in the same direction as the power source direction, the Archimedes spiral principle is adopted, the hollow stroke in the clamping process adopts fast forward, and the stress and the force are kept to be gradually clamped by adopting a spiral line.

The lower part of the bottom plate 1 is provided with a foreign matter falling prevention device 7, the foreign matter falling prevention device 7 comprises a slide rail 71, a baffle plate 72 and an air cylinder 73, two sides of the baffle plate 72 are in sliding fit with the slide rail 71, and a piston rod 731 of the air cylinder 73 is connected with the baffle plate 72. The utility model discloses a use with other equipment coordination, the utility model discloses a prevent that the foreign matter falls into device 7 is mounting plate upper portion when using, sets up baffle 72 and prevents that other spare parts from dropping to centre gripping downthehole 6 on the equipment in, influences the normal operating of equipment. The utility model discloses when not using, prevent that the foreign matter from falling into the cylinder of device 7 promotes baffle 72 forward, is sheltered from to centre gripping hole 6, prevents that peripheral article from falling into the centre gripping hole, influences the normal use of frock.

One side of the fixing plate 24 is clamped in the fixing groove 22, and the other side extends above the intermediate ring 8. The fixing plate 24 is fixed on the bottom surface of the fixing groove 22 by a screw, and the fixing plate 24 plays a role of limiting the middle ring 8 and preventing the middle ring 8 from moving upwards.

A clamping method for a hollow tube clamping mechanism of an automobile part comprises the following steps: firstly, extending a hollow pipe into a clamping hole 6; secondly, the servo motor 41 transmits torque to the screw rod 43 through the coupler 42, the screw rod 43 rotates to drive the nut 44 to move forwards along the screw rod 43, and the swing arm is further pushed forwards; when the swing arm moves forward, the rotating ring 3 rotates clockwise to drive the guide disc 5 to rotate clockwise, so that the guide wheel 231 of the clamping rod slides into the inner ring groove 512 from the outer ring groove 511 through the transition groove 513; fourthly, after the guide wheel 231 enters the inner annular groove 512, the outer arc surface 233 is contacted with the inner side surface 311 of the top block 31, the swing arm continues to advance, and the hollow pipe is clamped.

In the inner ring groove 512 of the guide wheel 231, the clamping rods move inwards under the pushing of the top block, the guide wheel 231 slides in the inner ring groove 512, and the four clamping rods achieve the effect of clamping the hollow pipes simultaneously; when the hollow tube is loosened, the rotating ring 3 rotates counterclockwise, and the guide wheel 231 slides from the inner annular groove 512 into the outer annular groove 511 instantaneously, thereby realizing the fast-forward type simultaneous loosening of the hollow tube.

Claims

1. The utility model provides a be used for auto parts hollow tube fixture which characterized in that: including bottom plate (1), bottom plate (1) top be equipped with fixed disk (2) and rotatory ring (3), be equipped with intermediate ring (8) between rotatory ring (3) and fixed disk (2), the centre of bottom plate (1) and fixed disk (2) is equipped with centre gripping hole (6), is equipped with driving system (4) in rotatory ring (3) outside, fixed disk (2) on be equipped with guide way (21) and fixed slot (22), cooperate with guide way (21) and be equipped with a plurality of supporting rod (23), be equipped with fixed plate (24) on fixed slot (22).

2. The hollow tube clamping mechanism for automobile parts as claimed in claim 1, wherein: the inner side of the rotating ring (3) is provided with a top block (31), the middle of the rotating ring (3) is provided with a guide disc (5), and the guide disc (5) is provided with an arc-shaped groove (51).

3. The hollow tube clamping mechanism for auto parts of claim 2, wherein: the top blocks (31) are four, the inner side surfaces (311) of the four top blocks (31) are arc-shaped surfaces, and the arc-shaped track of the inner side surfaces (311) is an Archimedes spiral line.

4. The hollow tube clamping mechanism for auto parts of claim 2, wherein: one end of the clamping rod (23) is provided with an outer arc surface (233), the other end of the clamping rod is provided with a clamping surface (232), the upper part of the clamping rod (23) is provided with a guide wheel (231), and the guide wheel (231) extends into the arc-shaped groove (51); the outer arc surface (233) is matched with the inner side surface (311) of the top block (31).

5. The hollow tube clamping mechanism for auto parts of claim 4, wherein: the arc-shaped groove (51) on the guide disc (5) comprises an outer ring groove (511) and an inner ring groove (512), the outer ring groove (511) is connected with the inner ring groove (512) through a transition groove (513), and the arc-shaped track of the inner ring groove (512) is an Archimedes spiral line.

6. The hollow tube clamping mechanism for automobile parts as claimed in claim 1, wherein: the power system (4) comprises a servo motor (41), a coupler (42) is arranged on the servo motor (41), a lead screw (43) is connected with the coupler (42), a nut (44) is sleeved on the lead screw (43), and the nut is connected with the rotating ring (3) through a swing arm (46).

7. The hollow tube clamping mechanism for automobile parts as claimed in claim 1, wherein: the anti-foreign matter falling device is characterized in that a foreign matter falling preventing device (7) is arranged on the lower portion of the base plate (1), the foreign matter falling preventing device (7) comprises a sliding rail (71), a baffle (72) and a cylinder (73), two sides of the baffle (72) are in sliding fit with the sliding rail (71), and a piston rod (731) of the cylinder (73) is connected with the baffle (72).

8. The hollow tube clamping mechanism for automobile parts as claimed in claim 1, wherein: one side of the fixing plate (24) is clamped in the fixing groove (22), and the other side of the fixing plate extends to the upper part of the middle ring (8).