CN218904443U - Efficient self-centering clamp - Google Patents

Abstract

The utility model discloses a high-efficiency self-centering clamp in the technical field of clamps, which comprises a base and a clamp; the base is horizontally work platform, a plurality of mounting panels have been installed to the base top separable, every the mounting panel all sets up horizontally mutually parallel, the mounting panel is the dull and stereotyped that has a plurality of screw, and is a plurality of anchor clamps pass through the bolt locking at the mounting panel top, can be applicable to the different dimensional change of work piece, can both be with its centre gripping centering, ensure the center of the work piece place of being gripped corresponds with the central point that the cutter set for to this device can once carry out the centre gripping to a plurality of work pieces simultaneously, and the deflection of every work piece of centre gripping is all inequality moreover, and this device also can carry out the centre gripping simultaneously, is convenient for match with machining center's setpoint, effectively improves machining precision, and the multiple work pieces of centre gripping simultaneously processes, reduces the number of times of changing the cutter, and machining efficiency is higher.

Description

Efficient self-centering clamp

Technical Field

The utility model relates to the technical field of clamps, in particular to a high-efficiency self-centering clamp.

Background

The inside of the mould is provided with an inner cavity which is the same as the part to be injection-molded, molten material is injected into the cavity during injection molding, after a period of pressure maintaining, the mould is separated from the parting line, and the injected part can be taken out. At this time, one side of the mold is fixed, and the mold is called a fixed mold. And the other side moves away from the fixed die when the die is opened, namely the movable die. This structure using a fixed mold and a movable mold in cooperation is called a movable mold.

After a product cast and molded by a conventional die is processed, the appearance of a cast blank can cause the problems of expansion or fixed deformation and the like of the blank due to the die brushing and the like, the deformed workpiece needs to be stably clamped, then is subjected to finishing or engraving through a processing center, but the bathroom product blank is a cast, and is generally clamped by a moving and fixed die which is manufactured in a matched mode for stable and convenient clamping, the moving and fixed die is stable in clamping and matched in shape, the shape of the moving and fixed die is matched with that of the surface of the workpiece after clamping, and in the clamping process, the workpiece is only required to be placed on the fixed die, then the moving die is closed, the workpiece is clamped, placed and clamped transversely conveniently, so that the workpiece is not easy to slide, therefore, the moving and fixed mold is also commonly used for clamping a product manufactured by a mold, however, the clamping mode of the moving and fixed mold is that one moving and fixed mold can be used for clamping only one moving and fixed mold, namely, the product is placed on one fixed mold, the moving and fixed mold is clamped, then the moving and fixed mold is processed and refined, after the processing is finished, the moving and fixed mold is taken out, a workpiece is outwards pushed out of the fixed mold through opening the moving and fixed mold, and clamping and processing are finished.

There is a need for a clamp that is more accurate in clamping and centering a workpiece to account for such deformable castings, and for a clamp that is capable of clamping and centering workpieces that are subject to a variety of different size variations.

Based on the above, the utility model designs an efficient self-centering clamp to solve the above problems.

Disclosure of Invention

The utility model aims to provide the efficient self-centering clamp which can be suitable for different size changes of workpieces, can clamp and center the workpieces, ensures that the center of the clamped workpiece corresponds to the center point set by a cutter, can clamp a plurality of workpieces at one time at the same time, has different deformation of each clamped workpiece, can clamp the center point of the workpiece at the same time, can be better clamped at the center of the clamp, is convenient to match with the positioning point of a machining center, effectively improves machining precision, clamps a plurality of sets of workpieces for machining, reduces the frequency of replacing the cutter, and has higher machining efficiency.

The utility model is realized in the following way: an efficient self-centering fixture, comprising:

a base and a clamp;

the base is a horizontal working platform, a plurality of mounting plates are detachably arranged at the top of the base, each mounting plate is horizontally arranged in parallel, each mounting plate is a flat plate with a plurality of screw holes, a plurality of clamps are locked at the top of the mounting plate through bolts, a plurality of clamps are detachably locked at the top of the mounting plate, and the axes of the clamps on each mounting plate are coincident;

the clamp comprises a clamping sliding table, two clamping sliding blocks and two clamping dies, wherein each clamping die can be locked on the vertical inner side wall of one clamping sliding block in a separated mode, the two clamping sliding blocks are horizontally arranged on the clamping sliding table, the vertical inner side walls of the two clamping sliding blocks on the same clamping sliding table are oppositely arranged, and the clamping dies on the two clamping sliding blocks can be attached and clamped on two sides of a workpiece in a horizontally sliding and separating mode;

the clamping slits of the clamping dies which are matched and folded on the same mounting plate and are in a clamping state are on the same straight line.

Further, the sliding directions of the two clamping dies on the same clamp are opposite on the same horizontal plane, and the horizontal sliding displacement distance of each clamping die is the same.

Further, a plurality of adjusting grooves are formed in the top of the base, the adjusting grooves are strip-shaped dovetail grooves, the adjusting grooves are uniformly spaced and arranged in parallel, and the mounting plate can be locked in the adjusting grooves in a separated mode through bolts;

the plurality of clamps are uniformly distributed on the mounting plate in an array.

Further, the sliding rail is horizontally arranged at the top of the clamping sliding table, the clamping sliding block is horizontally arranged in the sliding rail on the clamping sliding table, and the clamping sliding block is driven by the air cylinder.

Further, the clamping dies are provided with a plurality of replacement parts with different shapes and sizes, the shapes and the sizes of the outer surfaces of the clamping dies and the workpiece are the same, the inner side surfaces of the two clamping dies on each clamping sliding table are matched and clamped in shape, each clamping die is locked on the clamping sliding block through a bolt, and the clamping dies are not in contact with the clamping sliding table.

The beneficial effects of the utility model are as follows: 1. according to the utility model, the clamping quantity can be increased by simultaneously installing the plurality of sets of clamps on the mounting plate of the base, and the plurality of workpieces can be clamped at the same time, so that a machining center can machine all the workpieces on the base every time when replacing a new cutter, and then, after replacing the cutter, all the workpieces can be machined in the next step, therefore, the device can finish machining all the workpieces on the base only by replacing the number of cutters required by machining one workpiece, the time required by replacing the cutter is reduced, and the machining efficiency is improved;

2. according to the clamping device, the workpiece is clamped by relative sliding of the two clamping sliding blocks on the clamping sliding table instead of a clamping mode that the single side of the moving and fixed die is turned over and opened, and the clamping device can synchronously clamp inwards during clamping, so that even if the deformation of each workpiece is different, each time of clamping can ensure that the workpiece is positioned at the central position of the clamp, the positioning of the workpiece is facilitated, the center of the workpiece is matched with the original point setting of the cutter, the deviation of the clamping central point of the workpiece cannot be caused due to the different deformation, and the machining precision is effectively improved;

3. the clamping die on the clamp clamped by the device can be conveniently replaced, so that the machining scheme can be conveniently adjusted, the same workpiece can be clamped and machined, different workpieces can be clamped and machined, and the clamping die is only required to be replaced and matched, so that the clamping die is more flexible to use.

Drawings

The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of the back side of the present utility model;

FIG. 3 is a schematic view of the mounting plate of the present utility model mounted on a base;

FIG. 4 is an exploded view of a single clamp of the present utility model;

FIG. 5 is an exploded view of the other side of a single clamp of the present utility model;

FIG. 6 is a schematic view of the assembled structure of a single clamp of the present utility model;

FIG. 7 is an exploded top view of a single clamp of the present utility model;

fig. 8 is a schematic side view of a single clamp of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises a base, a mounting plate, an adjusting groove, a clamp, a clamping sliding table, a clamping sliding block and a clamping die, wherein the base is 1-11-mounting plate, the adjusting groove is 12-2-clamp, the clamping sliding table is 21-clamp, the clamping sliding block is 22-clamp, and the die is 23-clamp.

Detailed Description

Referring to fig. 1 to 8, the present utility model provides a technical solution: an efficient self-centering fixture, comprising:

a base 1 and a clamp 2;

the base 1 is a horizontal working platform, a plurality of mounting plates 11 are detachably arranged on the top of the base 1, each mounting plate 11 is horizontally arranged in parallel, each mounting plate 11 is a flat plate with a plurality of screw holes, a plurality of clamps 2 are locked on the top of the mounting plate 11 through bolts, a plurality of clamps 2 are detachably locked on the top of the mounting plate 11, and the axes of the clamps 2 on each mounting plate 11 are overlapped;

the fixture 2 comprises a clamping sliding table 21, two clamping sliding blocks 22 and two clamping dies 23, wherein each clamping die 23 can be locked on the vertical inner side wall of one clamping sliding block 22 in a separated mode, the two clamping sliding blocks 22 are horizontally arranged on the clamping sliding table 21, the vertical inner side walls of the two clamping sliding blocks 22 on the same clamping sliding table 21 are oppositely arranged, and the clamping dies 23 on the two clamping sliding blocks 22 can be attached and clamped on two sides of a workpiece in a horizontally sliding and separating mode;

the same supporting centre gripping mould 23 that folds on mounting panel 11 is in the clamp seam of clamping state on same straight line, can be applicable to the different dimensional changes of work piece, can both be with its centre gripping centering, ensure the center of the position of work piece that is held corresponds with the central point that the cutter set for to this device can once carry out the centre gripping to a plurality of work pieces simultaneously, and the deflection of every work piece of centre gripping is all inequality moreover, this device also can carry out the centre gripping simultaneously, and can be better with the central point centre gripping of work piece in the center department of anchor clamps, be convenient for match with machining center's setpoint, effectively improve machining precision, the multiple work pieces of centre gripping are processed simultaneously, reduce the number of times of changing the cutter, machining efficiency is higher.

The sliding directions of the two clamping dies 23 on the same clamp 2 are opposite on the same horizontal plane, and the horizontal sliding displacement distance of each clamping die 23 is the same, so that the displacement speed and the displacement distance of the clamping dies 23 are the same when each clamping is performed, the clamping faces of the two clamping sliding blocks 22 on the same clamping sliding table 21 are symmetrically arranged, the clamping faces of the two clamping sliding blocks 22 on the workpiece are mirror images of each other with the center point of the clamping sliding table 21 as a base point, so that the workpiece can be conveniently and accurately clamped at the center of the clamp 2, the workpiece can be conveniently matched and positioned with the position of a cutter, the workpiece can not be clamped and deflected, the clamp 2 forms a self-centering clamping device, and the workpiece can be conveniently centered and positioned and clamped;

the top of the base 1 is provided with a plurality of adjusting grooves 12, the adjusting grooves 12 are strip-shaped dovetail grooves, the adjusting grooves 12 are uniformly spaced and mutually parallel, and the mounting plate 11 is detachably locked in the adjusting grooves 12 through bolts;

the clamps 2 are uniformly distributed on the mounting plate 11 in an array manner, so that the clamps 2 can be conveniently positioned, and the machining is more accurate;

the top of the clamping sliding table 21 is horizontally provided with a sliding rail, the clamping sliding block 22 is horizontally arranged in the sliding rail on the clamping sliding table 21, and the clamping sliding block 22 is driven by an air cylinder, so that the clamping sliding table is convenient to use and clamp and slide;

the clamping die 23 has a plurality of replacement parts that shape and size are different, clamping die 23 is the same with work piece surface shape and size, every two clamping die 23's medial surface shape cooperation centre gripping on the clamping sliding table 21, every clamping die 23 passes through the bolt locking on clamping slider 22, clamping die 23 is not contacted with clamping sliding table 21, is convenient for change different work pieces and processes, and the processing is nimble, and the centre gripping is convenient, and it is also very convenient to change, and when processing different work pieces moreover, only need change clamping die 23 can, because clamping sliding table 21 does not have the dismouting, the centre gripping position of work piece still can be accurate centering after the clamping die 23 is changed.

In one embodiment of the utility model:

the embodiment of the utility model provides a high-efficiency self-centering clamp, which solves the technical problems that: 1. the existing machining efficiency is low, in general, when the same cast workpiece is subjected to correction and machining, multiple cutters are needed for machining after clamping, a turning tool or a milling cutter is needed for the protrusion of the inner part of the pipe fitting, drilling or milling cutters are needed for holes on the surface of the workpiece, and the cutters with different sizes are alternately used to finish the finishing machining of one workpiece; 2. the existing machining is carried out by using a moving fixed die, the moving fixed die is folded on one side for machining, and in the clamping mode, when the clamping is carried out, a clamp can push workpieces in a pressurizing mode in the folding direction when the clamping is carried out, the workpieces with different deformation amounts are pushed to be different in displacement, for example, the horizontal deformation amount is 2mm of the workpiece and the horizontal deformation amount is 1mm of the workpiece, the transverse pushing distance is 1mm of the deformation amount when the moving fixed die is clamped, therefore, the positions of the two workpieces are 1mm different when the two workpieces are clamped, the positions of the two workpieces are changed due to the difference of the deformation amounts when the casting workpieces are clamped and machined each time, the center point of each workpiece clamping is deviated, the deviation is half of the deformation amount of the workpiece, and the machining precision is always deviated.

The technical effects are realized as follows: 1. according to the utility model, the number of the clamps 2 for clamping the workpieces can be increased by simultaneously installing the plurality of the clamps 2 on the mounting plate 11 of the base 1, and the plurality of the workpieces can be clamped at the same time, so that a machining center can machine all the workpieces on the base 1 each time when a new cutter is replaced, and then the cutter 2 is replaced and then all the workpieces can be machined in the next step, therefore, the device can complete machining on all the workpieces on the base 1 only by replacing the cutter required by machining one workpiece, complete cutter replacement of all the machining operations at one time, machine all the plurality of the workpieces, reduce the times of replacing the cutter and improve the machining efficiency;

2. the clamping device clamps the workpiece by relatively sliding the two clamping sliding blocks 22 on the clamping sliding table 21 instead of a clamping mode that the moving and fixed dies are turned over and opened at one side, and the clamping device can synchronously and horizontally clamp inwards by the clamping die 23 during clamping, so that even if the deformation of each workpiece is different, each time of clamping can ensure that the workpiece is positioned at the central position of the clamp 2, the positioning of the workpiece is more facilitated, the center of the workpiece is matched with the original point setting of the cutter, the deviation of the clamping center point of the workpiece can not be caused due to the different deformation, and the machining precision is effectively improved;

3. the clamping die 23 on the clamp 2 clamped by the device can be conveniently replaced, so that the clamping processing scheme can be conveniently adjusted, the same workpiece can be clamped and processed, different workpieces can be clamped and processed, only the matched clamping die 23 is required to be replaced, and the device is more flexible to use.

The technical scheme in the embodiment of the utility model aims to solve the problems, and the overall thought is as follows:

in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

When the utility model is manufactured, a horizontal base 1 commonly used by a machine tool is firstly used, a plurality of adjusting grooves 12 are formed in the base 1, the adjusting grooves 12 are dovetail grooves with convex cross sections, and the mounting plate 11 can be fixed by locking bolts; the mounting plate 11 is a flat plate with a plurality of positioning screw holes and is used for connecting the base 1 and the clamp 2;

the fixture 2 comprises a clamping sliding table 21, two clamping sliding blocks 22 and two clamping dies 23, wherein each clamping die 23 is locked on the vertical inner side wall of one clamping sliding block 22 through a bolt, two clamping sliding blocks 22 are horizontally arranged on the same clamping sliding table 21, one clamping sliding table 21 is locked on the mounting plate 11 through a bolt, the side surface of the clamping sliding table 21 is provided with an air hole, the clamping sliding blocks 22 and the clamping sliding table 21 are driven through an air cylinder, the driven air cylinder is connected with the air hole on the side surface of the clamping sliding table 21, the connection and removal mode belongs to a common PLC control driving mode, the air cylinder for driving the clamping sliding blocks 22 is connected with a PLC controller, and the control mode is simple in connection and control and origin setting;

the two clamping slide blocks 22 on the same clamping sliding table 21 are arranged in a manner of opposite vertical inner side walls, namely, the clamping dies 23 installed on the two clamping slide blocks 22 on the same clamping sliding table 21 are arranged in a manner of opposite face to face, the clamping dies 23 are arranged vertically, the inner side surfaces of the clamping dies 23 are identical in shape with the outer surfaces of the workpieces, and the clamping dies 23 are horizontally slid and separated or attached to the two side surfaces of the workpieces, so that the center line of each clamp 2 is the inner side surface of the clamping dies 23 and the inner side surface of the clamping slide blocks 22, and when the two clamping slide blocks 22 slide and loosen the workpieces, the side which is opened at two sides is the outer side surface;

two or three mounting plates 11 can be simultaneously arranged on one base 1, and the base 1 can be conveniently and flexibly adjusted according to processing requirements, but when the clamping dies 23 matched with the clamping dies 23 on the same mounting plate 11 are in a clamping state, the clamping slits of the clamping dies 23 are on the same straight line, and the slit lines of the clamping dies 23 folded inwards in the clamping state on each clamp 2 on the same mounting plate 11 are on the same horizontal straight line, so that the origin of the clamp 2 is conveniently matched and positioned with the cutting point of a cutter, and the accurate clamping position is ensured.

The clamping die 23 and the clamping sliding table 22 are locked through bolts, so that the clamping is convenient to replace, and when workpieces in different shapes are processed, the clamping die 23 is more convenient to replace, a PLC control pipeline and a driving mode do not need to be disassembled and assembled, only the die is needed to be replaced, and the clamping die 23 can be replaced conveniently, so that different workpieces can be processed once.

When the clamping device is used, the clamping dies 23 matched with the shape are firstly arranged on the plurality of clamps 2 on the mounting plate 11, so that the clamping dies 23 on the same clamping sliding table 21 are matched, and the clamping sliding table 21 and the clamping sliding block 22 do not need to be disassembled and assembled, so that the folded center positions of the two clamping dies 23 are fixed, and the processing and positioning of a cutter are facilitated;

then, the PLC controls the clamping die 23 to slide and open on the clamping sliding table 21 along with the clamping sliding blocks 22, and then the workpieces are sequentially placed into the clamping die 23, so that the workpieces are clamped by the clamp 2, and the workpieces are positioned at the central positions of the two clamping dies 23 which are clamped in a sliding manner relatively, so that the clamp is a self-centering clamp;

then the machining center is controlled to replace the tool, the first machining finishing is carried out on all the workpieces on the base 1, for example, the step is to finish the inner holes of the pipe fittings, and the tools used at the moment are the same, so that the inner holes of all the workpieces can be finished at one time.

In addition, in the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. are presented, the indicated orientation or positional relationship is based on that shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.

Claims (5)

1. An efficient self-centering fixture, comprising: a base (1) and a clamp (2);

the base (1) is a horizontal working platform, a plurality of mounting plates (11) are detachably arranged at the top of the base (1), each mounting plate (11) is horizontally arranged in parallel, each mounting plate (11) is a flat plate with a plurality of screw holes, a plurality of clamps (2) are locked at the top of the mounting plate (11) through bolts, a plurality of clamps (2) are detachably locked at the top of the mounting plate (11), and the axes of the clamps (2) on each mounting plate (11) are coincident;

the clamp (2) comprises a clamping sliding table (21), two clamping sliding blocks (22) and two clamping dies (23), wherein each clamping die (23) can be locked on the vertical inner side wall of one clamping sliding block (22) in a separated mode, the two clamping sliding blocks (22) are horizontally arranged on the clamping sliding table (21), the vertical inner side walls of the two clamping sliding blocks (22) on the same clamping sliding table (21) are oppositely arranged, and the clamping dies (23) on the two clamping sliding blocks (22) can be attached and clamped on two sides of a workpiece in a horizontally sliding and separating mode;

the clamping slits of the matched and folded clamping dies (23) on the same mounting plate (11) in a clamping state are on the same straight line.

2. The efficient self-centering fixture of claim 1, wherein: the sliding directions of the two clamping dies (23) on the same clamp (2) are opposite on the same horizontal plane, and the horizontal sliding displacement distance of each clamping die (23) is the same.

3. The efficient self-centering fixture of claim 1, wherein: a plurality of adjusting grooves (12) are formed in the top of the base (1), the adjusting grooves (12) are strip-shaped dovetail grooves, the adjusting grooves (12) are uniformly spaced and arranged in parallel, and the mounting plate (11) can be locked in the adjusting grooves (12) in a separated mode through bolts;

a plurality of fixtures (2) are uniformly distributed in an array on a mounting plate (11).

4. The efficient self-centering fixture of claim 1, wherein: the top of the clamping sliding table (21) is horizontally provided with a sliding rail, the clamping sliding block (22) is horizontally arranged in the sliding rail on the clamping sliding table (21), and the clamping sliding block (22) is driven by an air cylinder.

5. The efficient self-centering fixture of claim 1, wherein: the clamping dies (23) are provided with a plurality of replacement parts with different shapes and sizes, the shapes and the sizes of the clamping dies (23) and the outer surfaces of the workpieces are the same, the inner side surfaces of the two clamping dies (23) on each clamping sliding table (21) are matched and clamped in a shape fit mode, each clamping die (23) is locked on the clamping sliding block (22) through a bolt, and the clamping dies (23) are not in contact with the clamping sliding table (21).

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