CN215200788U

CN215200788U - Multi-station clamp

Info

Publication number: CN215200788U
Application number: CN202121424969.3U
Authority: CN
Inventors: 刘同安; 张增刚
Original assignee: Qingdao Hailixu Electromechanical Technology Development Co ltd
Current assignee: Qingdao Hailixu Electromechanical Technology Development Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-12-17
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a multistation anchor clamps, including base, the tight mechanism in top, be equipped with the fixed station of work piece that distributes in pairs on the base, the tight mechanism in top sets up and distributes in pairs between the fixed station of work piece for the top is located and distributes in pairs work piece on the fixed station of work piece, the tight mechanism in top includes screw thread subassembly, sleeve and a pair of removal top tight piece, a pair of connecting rod, the sleeve passes through screw thread subassembly installs on the base, it installs movably to remove the top tight piece on the base, the one end of connecting rod with the sleeve rotates to be connected, the other end of connecting rod with it rotates to remove the top tight piece and connects. The utility model discloses multistation anchor clamps are used for improving work piece machining efficiency, reduce intensity of labour.

Description

Multi-station clamp

Technical Field

The utility model relates to a machining technical field, concretely relates to multistation anchor clamps.

Background

When the existing numerical control machine tool is used for processing, single-station one-by-one processing is generally adopted, workpieces are frequently clamped and taken, the processing efficiency is reduced, the labor intensity of operators is high, and the processing quality is easily influenced by fatigue operation.

Therefore, how to improve the processing efficiency of the workpiece and reduce the labor intensity becomes a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

An object of the utility model is to provide a multistation anchor clamps for improve work piece machining efficiency, reduce intensity of labour.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a multi-station clamp, comprising:

the device comprises a base, a plurality of workpiece fixing stations and a plurality of workpiece fixing devices, wherein the workpiece fixing stations are distributed in pairs on the base;

the jacking mechanism is arranged between the workpiece fixing stations distributed in pairs and used for jacking the workpieces on the workpiece fixing stations distributed in pairs;

the tight mechanism in top includes:

a threaded assembly;

a sleeve mounted on the base by the threaded assembly;

the pair of movable tightening blocks are movably arranged on the base;

and one end of the connecting rod is rotatably connected with the sleeve, and the other end of the connecting rod is rotatably connected with the movable jacking block.

In some embodiments, the tightening mechanism comprises:

a spring abutting between the sleeve and the base.

In some embodiments, the threaded assembly comprises:

a stud;

and a nut.

In some embodiments, the base is provided with a guide groove matched with the movable tightening block.

In some embodiments, the movable tightening block is mounted on the base through guide screws, and the guide screws are located on two opposite sides of a rotary connection portion between the movable tightening block and the connecting rod.

In some embodiments, the movable tightening block is provided with a yielding hole, and an elastically deformable thin-wall structure is formed between a tightening surface of the movable tightening block and the yielding hole.

In some embodiments, the pressing surface of the movable pressing block is a concave arc surface.

In some embodiments, the center of the inner wall of the abdicating hole close to the tightening surface coincides with the center of the tightening surface.

Compared with the prior art, the utility model discloses an advantage and beneficial effect are:

1. the base is provided with the workpiece fixing stations distributed in pairs, one or more pairs of workpiece fixing stations can be arranged according to processing requirements, and the design of at least two workpiece fixing stations is adopted, so that frequent standby operation for replacing workpieces can be avoided, the workpiece processing efficiency can be improved, and the labor intensity can be reduced.

2. The workpiece on the workpiece fixing stations distributed in pairs is simultaneously pushed tightly through the pushing mechanism, so that two workpieces can be simultaneously pushed tightly, the clamping efficiency of the workpieces can be effectively improved, the workpiece processing efficiency can be improved, and the labor intensity can be reduced.

3. The sleeve passes through threaded component and installs on the base, when rotating threaded component, can realize pressing the sleeve on the base, when pressing the sleeve, through the transmission of connecting rod, can promote to remove the tight piece in top and push up tight work piece to can be with synchronous, the quick clamping of the work piece that distributes in pairs, the tight mechanism in top simple structure, processing preparation are convenient, use reliably, have stronger practicality.

Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a multi-station fixture according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with a pair of distributed workpieces removed;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the base of FIG. 1;

FIG. 5 is a schematic view of the structure of the tightening mechanism shown in FIG. 1;

FIG. 6 is a schematic view of the tightening mechanism of FIG. 5 from another perspective;

FIG. 7 is a schematic view of the structure of FIG. 1 in which the workpiece is engaged with the movable puller block;

fig. 8 is a schematic structural view of a second tightening mechanism according to an embodiment of the present invention;

reference numerals:

a base 1; a workpiece fixing station 11; a guide groove 12; a first groove 121; a second groove 122;

a jacking mechanism 2; a sleeve 21; a connecting rod 22; moving the jacking block 23; an upper plate 231; a lower plate 232; a relief hole 233; a top gripping surface 234; a thin-walled structure 235; a connecting bolt 24; a spring 25; a guide screw 26;

a workpiece 3; is pressed against the surface 31.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the positional relationships shown in the drawings. The terminology is for the purpose of describing the invention only and is not intended to be limiting of the invention since it is not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example one

As shown in fig. 1, the embodiment provides a multi-station fixture, which includes a base 1 and a tightening mechanism 2, workpiece fixing stations 11 distributed in pairs are provided on the base 1, the structure of the workpiece fixing stations 11 can refer to the prior art, and is specifically matched with the structure of a workpiece 3, the embodiment is not described in detail, the tightening mechanism 2 is provided between the workpiece fixing stations 11 distributed in pairs, and the workpiece 3 located on the workpiece fixing stations 11 distributed in pairs can be simultaneously tightened and fixed by the tightening mechanism 2.

As shown in fig. 2 and 3, the tightening mechanism 2 includes a screw assembly (not shown), a sleeve 21, a pair of movable tightening blocks 23, and a pair of links 22. The connecting rods 22 correspond to the movable tightening blocks 23 one by one, one ends of the connecting rods 22 are rotatably connected to the sleeve 21, the other ends of the connecting rods 22 are rotatably connected to the movable tightening blocks 23, and the movable tightening blocks 23 are movably mounted on the base 1. When the sleeve 21 is pressed, the sleeve 21 can simultaneously drive the pair of movable tightening blocks 23 to synchronously tighten the workpieces 3 on the workpiece fixing stations 11 distributed in pairs by virtue of transmission of the pair of connecting rods 22, and when the movable tightening blocks 23 are in tightening positions, the position of the sleeve 21 is a pressing position. The sleeve 21 is mounted on the base 1 by means of a screw assembly which allows the sleeve 21 to be held in a compressed position.

The multistation anchor clamps that this embodiment provided, the tight mechanism 2 in top simple structure, processing preparation are convenient, use reliably, have stronger practicality, utilize the tight mechanism 2 in top to push up tightly simultaneously to the work piece 3 on the fixed station 11 of work piece that distributes in pairs, can push up tightly two work pieces 3 in step, can effectively improve the clamping efficiency of work piece 3, be favorable to improving work piece 3 machining efficiency, reduce intensity of labour.

In order to clamp the opposite sides of the workpiece 3, in this embodiment, a fixed tightening block (not shown in the drawings) is installed on the base 1, wherein the fixed tightening block and the movable tightening block 23 are respectively located at the opposite sides of the workpiece fixing station 11, and the movable tightening block 23 is pressed against the fixed tightening block by the threaded component pressing sleeve 21.

In some embodiments, a pair of workpiece holding stations 11 may be provided on the base 1.

In some embodiments, a plurality of pairs of workpiece holding stations 11 may be provided on the base 1.

The number of the workpiece fixing stations 11 is increased appropriately, and the workpiece fixing device is more suitable for batch processing of the workpieces 3.

In this embodiment, in order to better adapt to the size of the existing numerical control machine tool and obviously improve the processing efficiency, as shown in fig. 1, six pairs of workpiece fixing stations 11 are specifically arranged on the base 1.

In this embodiment, in order to realize the rotational connection between the sleeve 21 and the connecting rod 22, hinge supports are integrally formed on two opposite sides of the sleeve 21, in order to realize the rotational connection between the movable tightening block 23 and the connecting rod 22, a connecting bolt 24 is mounted on the movable tightening block 23, and a hinge support adapted to the other end of the connecting rod 22 is provided at the head of the connecting bolt 24.

In some embodiments, an integrally formed hinge support may also be formed on the movable puller block 23.

In some embodiments, the threaded component is embodied as a stud screwed to the base 1, and with the head of the stud abutting against the sleeve 21, pressing of the sleeve 21 and fixing of the sleeve 21 in the pressed position can be achieved when the stud is turned.

In this embodiment, in order to reduce the repeated rotation of the stud on the base 1, the screw assembly includes a stud and a nut (not shown in the drawing), after the stud is screwed on the base 1 from bottom to top, the sleeve 21 is sleeved on the stud, then the nut is installed on the stud, and the nut abuts against the sleeve 21, so that when the nut is rotated, the sleeve 21 can be pressed and the sleeve 21 can be fixed at the compression position.

In some embodiments, to release the tightening of the movable tightening block 23, the operator can lift the sleeve 21 by hand to move the movable tightening block 23 in a direction away from the tightening position.

In order to enable the movable tightening block 23 to automatically move in a direction away from the tightening position after the nut releases the compression on the sleeve 21, in the embodiment, the tightening mechanism 2 further includes a spring 25 abutting between the sleeve 21 and the base 1, as shown in fig. 3. Compress spring 25 between sleeve 21 and base 1, on the one hand, after operating personnel relieved compressing tightly sleeve 21 through rotating the nut, utilize spring 25's elasticity, drive sleeve 21 and shift up, and shifting up of sleeve 21 can drive and remove tight piece 23 and move towards the direction of keeping away from tight position of top through the transmission of connecting rod 22, on the other hand, when operating personnel compressed tightly sleeve 21 through rotating the nut, utilize spring 25's elasticity, can make sleeve 21 move down more steadily, be favorable to improving the reliability of tight mechanism 2 in top.

In order to guide the movement of the movable tightening block 23, in some embodiments, a guide groove 12 adapted to the movable tightening block 23 may be provided in the base 1.

As shown in fig. 5 and 6, in the present embodiment, the movable tightening block 23 includes an upper plate 231 and a lower plate 232 which are integrally formed, and correspondingly, as shown in fig. 4, the guide groove 12 formed on the base 1 is a stepped groove, and the guide groove 12 includes a first groove 121 adapted to the upper plate 231 and a second groove 122 formed in the first groove 121 and adapted to the lower plate 232.

Because under most circumstances, after installing work piece 3 on work piece fixed station 11, only need finely tune to remove puller block 23, alright realize the puller operation, for this reason, this embodiment removes puller block 23 and installs on base 1 through guide screw 26, has seted up the unthreaded hole on removing puller block 23, is formed with the polished rod section that is located the unthreaded hole on guide screw 26, and the clearance between unthreaded hole and the polished rod section is enough to satisfy the stroke of removing puller block 23, as shown in fig. 3, guide screw 26 is located and removes the relative both sides of the rotation connecting portion between puller block 23 and connecting rod 22.

In this embodiment, two guide screws 26 are respectively disposed on two opposite sides of the rotational connection portion between the movable tightening block 23 and the connecting rod 22, and a connection line of the two guide screws 26 is perpendicular to the moving direction of the movable tightening block 23.

Example two

In order to avoid the workpiece 3 from being excessively squeezed by the pushing surface 31, in the embodiment, the movable pushing block 23 is provided with the abdicating hole 233, so that the thin-wall structure 235 capable of elastically deforming is formed between the pushing surface 234 of the pushing surface 234 and the abdicating hole 233, as shown in fig. 8, when the workpiece 3 is pushed tightly by the movable pushing block 23, the thin-wall structure 235 can elastically deform towards one side of the abdicating hole 233, so that an unloading effect is achieved, and a local contact stress is reduced.

In some embodiments, the abutting surface 234 of the movable abutting block 23 is adapted to the abutted surface 31 of the workpiece 3 to ensure a sufficient contact area.

In order to adapt to the circular arc-shaped abutted surface 31, as shown in fig. 7, in this embodiment, the abutting surface 234 of the movable abutting block 23 may be an inward concave circular arc surface, which is beneficial to increase the circumferential friction force, and when the movable abutting block 23 and the fixed abutting block clamp the workpiece 3, the cohesive force may be improved.

The relief hole 233 may be an arc-shaped hole in order to fit the concave arc surface.

In some embodiments, the arc-shaped hole may further be an arc-shaped hole, an elliptical arc-shaped hole, a parabolic hole, or a multi-segment arc hole formed by splicing multiple segments of arcs.

In this embodiment, the center of the circle of the inner wall of the abdicating hole 233 close to the tightening surface 234 coincides with the center of the circle of the tightening surface 234, and a circular arc-shaped thin-wall structure 235 is formed between the abdicating hole 233 and the tightening surface 234, so that when the workpiece 3 is machined, the cutting resistance is favorably resisted, and the surface of the workpiece 3 is prevented from being damaged by extrusion, as shown in fig. 8, the abdicating hole 233 is specifically an arc-shaped hole.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A multi-station clamp, comprising:

the tight mechanism in top includes:

a threaded assembly;

a sleeve mounted on the base by the threaded assembly;

the pair of movable tightening blocks are movably arranged on the base;

2. A multi-station clamp according to claim 1, wherein said tightening mechanism comprises:

a spring abutting between the sleeve and the base.

3. A multi-station clamp according to claim 1, wherein said threaded assembly comprises:

a stud;

and a nut.

4. The multi-station clamp according to claim 1, wherein the base is provided with a guide groove matched with the movable tightening block.

5. A multi-station clamp as claimed in claim 1, wherein the movable puller block is mounted on the base by guide screws located on opposite sides of a rotational connection between the movable puller block and the connecting rod.

6. A multi-station clamp according to any one of claims 1 to 5, wherein the movable jacking block is provided with a yielding hole, and an elastically deformable thin-wall structure is formed between a jacking surface of the movable jacking block and the yielding hole.

7. A multi-station clamp according to claim 6, wherein the pushing surface of the movable pushing block is a concave arc surface.

8. A multi-station clamp as claimed in claim 7, wherein the centre of the inner wall of the abdicating hole close to the tightening surface coincides with the centre of the tightening surface.