CN209850403U - Positioning fixture - Google Patents

Abstract

The utility model relates to a positioning fixture, it includes base and a plurality of adjustment tank along base circumference distribution, the middle part of base is equipped with a supporting bench, the adjustment tank all faces a supporting bench, the sliding connection is connected with the clamp foot in the adjustment tank, and the upper surface that presss from both sides the foot is higher than a supporting bench's upper surface, be equipped with the actuating mechanism that the drive clamp foot removed on the base. The utility model discloses have and step up the work piece for the work piece is difficult for producing at the in-process of processing crooked, improves the processingquality's of work piece effect.

Description

Positioning fixture

Technical Field

The utility model belongs to the technical field of the technique of anchor clamps and specifically relates to a positioning fixture is related to.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process.

When an existing workpiece is machined, the workpiece to be machined is placed in a clamping groove of a V-shaped block, and a screw rod above the V-shaped block is rotated, so that the screw rod moves downwards and abuts against the workpiece, and the workpiece is fixed in the clamping groove of the V-shaped block. However, when the edge of the workpiece is machined, the workpiece is prone to be skewed due to uneven stress, and the machining quality of the workpiece is affected.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the positioning clamp is provided.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a positioning fixture, includes base and a plurality of adjustment tank along base circumference distribution, the middle part of base is equipped with a supporting bench, the adjustment tank all is towards a supporting bench, the adjustment tank internal slipping is connected with and presss from both sides the foot, and the upper surface that presss from both sides the foot is higher than a supporting bench's upper surface, be equipped with the actuating mechanism that the drive presss from both sides the foot and remove on the base.

Further: the driving mechanism comprises a micro motor, a rotating rod coaxially fixed on a micro motor rotor and a traction rope fixed on the clamping feet, the micro motor is fixed on the lower bottom surface of the base, the rotating rod is coaxially arranged in the supporting platform and is in transmission connection with the supporting platform, the traction rope is arranged in parallel with the base, and one end of the traction rope far away from the clamping feet is fixed on the rotating rod.

Further: every the adjustment tank all is equipped with the spring, the one end and the double-layered foot of spring are fixed, and the other end is fixed with the one end that the horizontal stand was kept away from to the adjustment tank.

Further: one side of the clamp foot close to the supporting platform is provided with a supporting surface, and the supporting surface is flush with the upper surface of the supporting platform.

Further: and a plurality of balls are arranged at the bottom of each adjusting groove along the length direction of the adjusting groove.

Further: the corners below the base are provided with height adjusting mechanisms;

the height adjusting mechanism comprises a supporting cylinder, a screw rod and a shifting piece, the screw rod is vertically fixed on the lower bottom surface of the base, one end, away from the base, of the screw rod is located in the supporting cylinder, the shifting piece is in threaded connection with the screw rod and located in the supporting cylinder, and an opening for the shifting piece to penetrate out is formed in the side wall of the supporting cylinder.

Further: horizontal bubbles are also arranged on the base.

The utility model has the advantages that:

1. the adjusting groove, the clamping feet and the driving mechanism are adopted, and the driving mechanism drives the clamping feet to move in the adjusting groove, so that a workpiece is clamped, the workpiece is not prone to being skewed in the machining process, and the stress is more uniform;

2. by adopting the height adjusting mechanism, the height of the whole clamp can be adjusted, so that the processing equipment meets the requirement of processing workpieces, and the applicability of the clamp is improved.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the height adjusting mechanism according to the present invention.

In the figure, 1, a base; 11. an adjustment groove; 12. a support table; 13. clamping feet; 131. a support surface; 2. a spring; 3. a ball bearing; 4. a drive mechanism; 41. a micro-motor; 42. rotating the rod; 43. a hauling rope; 5. a height adjustment mechanism; 51. a sleeve; 511. an opening; 52. a screw; 53. a shifting sheet; 6. horizontal bubbles.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

Referring to fig. 1, a positioning fixture includes a base 1, a supporting platform 12 disposed in the middle of the base 1, and four adjusting grooves 11 distributed along the circumference of the base 1, wherein the adjusting grooves 11 are all facing the supporting platform 12.

As shown in FIG. 1, the adjusting grooves 11 are slidably connected with clamping legs 13, and the upper surfaces of the clamping legs 13 are higher than the upper surface of the supporting platform 12. The side of each clamping foot 13 facing the support platform 12 is provided with a support surface 131 flush with the upper surface of the support platform 12. The support table 12 and the support surface 131 support the middle and the edge of the workpiece, so that the workpiece is not prone to being inclined in the processing process, and the processing quality of the workpiece is improved.

As shown in fig. 2, the base 1 is further provided with a driving mechanism 4 for driving each clamping leg 13 to move in the adjusting groove 11. The driving mechanism 4 comprises a micro motor 41 fixed on the lower bottom surface of the base 1, a rotating rod 42 coaxially and fixedly connected with the rotor of the micro motor 41, and a traction rope 43 fixed on each clamping leg 13 (see fig. 1). The rotating rod 42 is located within the support table 12, and the axis of the rotating rod 42 coincides with the axis of the support table 12. One end of each hauling rope 43, which is far away from the clamping foot 13, is fixedly connected with the rotating rod 42, and the four hauling ropes 43 are horizontally arranged and have different heights from the bottom of the adjusting groove 11. The micro motor 41 is started to rotate the rotating rod 42, and the pulling rope 43 is wound on the rotating rod 42 in the rotating process of the rotating rod 42, so that the clamping feet 13 are pulled to move towards the supporting platform 12, and the workpiece placed on the supporting platform is fixed.

As shown in FIG. 1, a spring 2 is disposed in each adjusting groove 11, one end of the spring 2 is fixedly connected with the clamping leg 13, and the other end is fixedly connected with the inner side wall of the adjusting groove 11 far from the end of the supporting table. When the micro motor 41 (see fig. 2) rotates, the clamping feet 13 move under the action of the traction rope 43 and stretch the spring 2, after the workpiece is machined, the micro motor 41 rotates reversely, the traction rope 43 is not pulled, and the spring 2 pulls the clamping feet 13 to restore to the initial state under the action of elastic restoring force.

As shown in fig. 1, the clamping leg 13 generates sliding friction when sliding in the adjustment groove 11, and the friction force is large and the wear on the clamping leg 13 is also large. Therefore, a plurality of balls 3 are provided at the bottom of each of the adjustment grooves 11 along the length direction thereof. The ball 3 changes sliding friction into rolling friction, reduces friction force, enables the clamping leg 13 to move more smoothly, and prolongs the service life of the clamping leg 13.

As shown in fig. 2, in order to improve the applicability of the positioning jig, a height adjusting mechanism 5 is provided at each corner below the base 1. Each height adjusting mechanism 5 comprises a screw rod 52 vertically fixed on the lower bottom surface of the base 1, a shifting piece 53 in threaded connection with the screw rod 52 and a sleeve 51 in sliding connection with the screw rod 52. One end of the screw 52 far from the base 1 is located in the sleeve 51, and an opening 511 for the pulling piece 53 to penetrate through is formed on the side wall of the sleeve 51. The screw 52 can be driven to move up and down along the sleeve 51 by rotating the pick 53 from the opening 511, so that the height of the base 1 can be adjusted.

As shown in fig. 1, since the height adjusting mechanisms 5 of the base 1 need to be adjusted one by one, when the adjusted heights are inconsistent, the base 1 is prone to be tilted integrally, which affects the overall processing of the workpiece. Therefore, the horizontal air bubbles 6 are provided on the upper surface of the base 1, and by observing the horizontal air bubbles 6, it is determined whether the base 1 is horizontal by determining whether the horizontal air bubbles 6 are centered.

The specific implementation process comprises the following steps: to treat that the processing work piece is placed a supporting bench 12 on, start micromotor 41 to drive dwang 42 and rotate, dwang 42 pivoted in-process haulage rope 43 twines on dwang 42 and stimulates and presss from both sides foot 13 to the direction of a supporting bench 12 and remove, thereby supports and step up the work piece, makes the work piece be difficult for producing crooked at the in-process of processing, has improved processingquality.

When the height of the base 1 needs to be adjusted, the shifting piece 53 is rotated, the screw 52 is driven by the shifting piece 53 to move up and down along the sleeve 51, and therefore the base 1 is driven to move up and down. The base 1 height is at the in-process of adjusting, judges whether base 1 is the level through observing horizontal bubble 6 whether placed in the middle, and then improves the processingquality of work piece.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. A positioning fixture is characterized in that:

including base (1) and a plurality of adjustment tank (11) that distribute along base (1) circumference, the middle part of base (1) is equipped with brace table (12), adjustment tank (11) all are towards brace table (12), the inside sliding of adjustment tank (11) is connected with and presss from both sides foot (13), and the upper surface that presss from both sides foot (13) is higher than the upper surface of brace table (12), be equipped with actuating mechanism (4) that the drive pressed from both sides foot (13) and remove on base (1).

2. A positioning jig according to claim 1 wherein:

actuating mechanism (4) are including micromotor (41), coaxial dwang (42) of fixing on micromotor (41) rotor and fix haulage rope (43) on pressing from both sides foot (13), the lower bottom surface at base (1) is fixed in micromotor (41), dwang (42) coaxial setting is in a supporting bench (12), and is connected with a supporting bench (12) transmission, haulage rope (43) and base (1) parallel arrangement, and the one end of keeping away from and pressing from both sides foot (13) is fixed on dwang (42).

3. A positioning jig according to claim 2 wherein:

every adjustment tank (11) all is equipped with spring (2), the one end and the double-layered foot (13) of spring (2) are fixed, and the other end is fixed with adjustment tank (11) keep away from the one end of horizontal stand.

4. A positioning jig according to claim 1 wherein:

one side of each clamping foot (13) close to the support table (12) is provided with a support surface (131), and the support surfaces (131) are flush with the upper surface of the support table (12).

5. A positioning jig according to claim 4 wherein:

the bottom of each adjusting groove (11) is provided with a plurality of balls (3) along the length direction.

6. A positioning jig according to claim 1 wherein:

the corners below the base (1) are provided with height adjusting mechanisms (5);

height adjusting mechanism (5) include sleeve (51), screw rod (52) and plectrum (53), bottom surface under base (1) is fixed perpendicularly in screw rod (52), the one end that base (1) was kept away from in screw rod (52) is located sleeve (51), plectrum (53) and screw rod (52) threaded connection, and be located sleeve (51), offer opening (511) that supply plectrum (53) to wear out on the lateral wall of sleeve (51).

7. A positioning jig according to claim 6 wherein:

the base (1) is also provided with horizontal bubbles (6).