CN222221869U - Clamping device for workpieces - Google Patents

Abstract

The utility model provides a clamping device for a workpiece. The main part is the cylinder that has the recess on the circumference, and the main part includes first terminal surface and second terminal surface, and the axial direction of main part is followed to the recess extension, and the one end that the recess is close to first terminal surface has the butt portion, deviates from the second end of first terminal surface and forms the breach at the second terminal surface. The clamp plate passes through fastener detachably and installs at the second terminal surface, and the border of clamp plate is suitable for shutoff breach. So set up, can once only clamp a plurality of work pieces, and then can process a plurality of work pieces simultaneously, simplified the course of working to a plurality of work pieces, improved machining efficiency, shortened machining cycle, reduced processing cost, because a plurality of work pieces are located same recess, can also reduce the processing size tolerance of a plurality of work pieces that are located same recess like this for a plurality of work pieces have the uniformity.

Description

Clamping device for workpiece

Technical Field

The utility model relates to the technical field of machining, in particular to a clamping device for a workpiece.

Background

The missile cabin power supply socket bracket is an important mechanical structure, one side surface of the missile cabin power supply socket bracket is an arc-shaped surface, for example, the structure diagram of the missile cabin power supply socket bracket is shown in fig. 1, the conventional method for machining the arc-shaped surface is ball cutter climbing surface machining, namely, clamping by a vice and milling the whole arc-shaped surface in a two-dimensional direction by a ball milling cutter, as shown in fig. 2, the clamping device can only machine workpieces one by one, and the obtained dimensional tolerance and consistency are not easy to guarantee, so that the efficiency is low, the period is long, and the cost is high. In addition, the clamping device can generate conditions of cutter sticking, poor chip removal and the like in the processing process, so that the surface smoothness is poor.

Disclosure of utility model

Therefore, the utility model provides a clamping device for workpieces, which solves the problems of complex process, low processing efficiency, long period, high cost and incapability of ensuring dimensional tolerance and consistency in the process of processing a plurality of workpieces by using the clamping device in the prior art.

The utility model provides a clamping device for clamping a workpiece, which comprises:

The main body is a cylinder with a groove on the circumference, the main body comprises a first end face and a second end face, the groove extends along the axial direction of the main body, one end, close to the first end face, of the groove is provided with an abutting part, and a notch is formed in the second end face by the second end, which is away from the first end face;

And the pressing plate is detachably arranged on the second end face through a fastener, and the edge of the pressing plate is suitable for sealing the notch.

Optionally, at least two of the grooves are spaced apart along the circumferential direction of the body.

Optionally, the groove has a first dimension in a circumferential direction of the body, a second dimension in an axial direction of the body, and a third dimension in a radial direction of the body.

Optionally, the pressing plates comprise a first pressing plate and a second pressing plate, wherein the first pressing plate and the second pressing plate are of semicircular plate-shaped structures, or the pressing plates comprise a third pressing plate which is of a circular plate-shaped structure.

Optionally, at least two holes are formed in the second end face, a first through hole and a second through hole corresponding to at least one hole are formed in the first pressing plate and the second pressing plate respectively, at least two fasteners penetrate through the first through hole or the second through hole respectively to enter the holes, or third through holes corresponding to the number and the positions of the holes are formed in the third pressing plate, and the fasteners penetrate through the third through holes to enter the holes.

Optionally, the fastener comprises a head portion and a threaded shank portion, the head portion being adapted to press against the first, second and/or third platens, the aperture being provided with internal threads which mate with external threads of the threaded shank portion.

Optionally, the first end face is adapted to be mounted on a chuck of a lathe.

The utility model has the following advantages:

the clamping device provided by the utility model comprises a main body and a pressing plate. The main part is the cylinder that has the recess on the circumference, and the main part includes first terminal surface and second terminal surface, and the axial direction of main part is followed to the recess extension, and the one end that the recess is close to first terminal surface has the butt portion, deviates from the second end of first terminal surface and forms the breach at the second terminal surface. The clamp plate passes through fastener detachably and installs at the second terminal surface, and the border of clamp plate is suitable for shutoff breach.

When clamping a plurality of workpieces, the workpieces can be sequentially arranged in the grooves, one workpiece is abutted with the abutting part, the edge of one workpiece is positioned at the notch and is flush with the second end face or slightly exceeds the second end face, then the pressing plate is pressed on the second end face by the fastener, and the pressing plate simultaneously presses the workpiece positioned at the notch, so that the pressure is transmitted to each workpiece, the workpieces are pressed in the grooves, and then the workpieces can be processed simultaneously. So set up, can once only clamp a plurality of work pieces, and then can process a plurality of work pieces simultaneously, simplified the course of working to a plurality of work pieces, improved machining efficiency, shortened machining cycle, reduced processing cost, because a plurality of work pieces are located same recess, can also reduce the processing size tolerance of a plurality of work pieces that are located same recess like this for a plurality of work pieces have the uniformity.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic structural diagram of an example of a part;

FIG. 2 shows a side view of the part of FIG. 1;

FIG. 3 shows a schematic structural view of an example of a workpiece;

FIG. 4 shows a schematic structural view of a prior art clamping structure;

Fig. 5 is a schematic view showing the structure of the clamping device in the present embodiment;

fig. 6 shows a schematic structural view of the main body in the present embodiment;

fig. 7 shows a schematic structural view of the first platen and the second platen in the present embodiment;

Fig. 8 is a schematic view showing the structure of a third platen in the present embodiment;

FIG. 9 is a schematic view showing the structure of the fastener in the present embodiment;

fig. 10 is a schematic view showing the structure of the body mounted in cooperation with the machine tool in the present embodiment;

fig. 11 is a flowchart of the clamping method in the present embodiment.

Reference numerals illustrate:

10. Parts, 12, first side, 14, second side, 100, workpiece, 102, first surface, 104, second surface, 210, body, 211, second end, 212, first end, 213, circumferential surface, 214, aperture, 215, groove, 216, notch, 217, abutment, 230, platen, 231, third platen, 2311, third through hole, 232, first platen, 233, first through hole, 234, second platen, 235, second through hole, 250, fastener, 251, head, 252, threaded shank.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 2, a schematic structural view of a part is provided, which may be a missile pod power socket bracket.

As shown in fig. 1 and 2, the part 10 is block-shaped. The part 10 includes a first side 12 and a second side 14 opposite the first side 12. The first side 12 of the part 10 is arcuate. The radius of curvature R1 of the first side 12 of the part 10 may be in the range of 20mm to 500mm, for example 30mm, 40mm, 60mm, 80mm, 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, 450mm. The second side 14 of the part 10 may be, for example, planar or curved. As shown in fig. 1 and 2, the first side 12 of the part 10 has a central axis X, which is the central axis of the arcuate surface. In fig. 2, the second side 14 of the part 10 has a first dimension A1 in a direction perpendicular to the central axis X (i.e., in the circumferential direction of the arcuate surface) and a second dimension A2 in a direction parallel to the central axis X. The part 10 has a third dimension A3 and a fourth dimension A4 between the first side 12 and the second side 14. As shown in fig. 2, the third dimension A3 is the largest dimension between the first side 12 and the second side 14 at the center, and the fourth dimension A4 is the smallest dimension between the first side 12 and the second side 14 at the extreme edge. The difference between the third dimension A3 and the fourth dimension A4 is the chord height of the arc surface of the first side 12.

Fig. 3 illustrates a workpiece 100, and the workpiece 100 is clamped and machined to produce the part 10 of fig. 1 and 2. In fig. 3, the arcuate surface to be machined, i.e. the first side 12 of the part 10 to be machined, is shown in dashed lines. Specifically, the workpiece 100 has a rectangular parallelepiped shape. The workpiece 100 includes a first surface 102 and a second surface 104 opposite the first surface 102. The first surface 102 of the workpiece 100 corresponds to the first side 12 of the part 10 and the second surface 104 of the workpiece 100 corresponds to the second side 14 of the part 10. The workpiece 100 has the same shape as the part 10 except for a first surface 102 corresponding to the first side 12 of the part 10. Thus, the second side 14 of the workpiece 100 has a first dimension A1 in a direction perpendicular to the central axis X (i.e., in a circumferential direction of the cylindrical surface to be machined) and a second dimension A2 in a direction parallel to the central axis X. The workpiece 100 has a third dimension A3 between the first surface 102 and the second surface 104. The part 10 shown in fig. 1 and 2 is obtained by machining the corresponding first surface 102 of the workpiece 100 into an arcuate surface having a radius of curvature R1.

Fig. 4 shows a prior art clamping structure in which a single workpiece P is clamped using a vice C as a clamping device, and then milling is performed along a corresponding first side of the workpiece in a two-dimensional direction using a ball milling cutter T to mill the corresponding first side of the workpiece into a cylindrical surface having a desired radius of curvature (i.e., radius of curvature R1). The processing method can only process one piece, and the obtained dimensional tolerance and consistency are not easy to ensure, so that the efficiency is low, the period is long, and the cost is high. In addition, the processing method can generate conditions of sticking a cutter, poor chip removal and the like in the processing process, so that the surface smoothness is poor.

In order to solve the above-mentioned problems, the present utility model provides a clamping device and a clamping method for a workpiece, and the present utility model will be described in detail with reference to fig. 5 to 11 and embodiments.

As shown in fig. 5 and 6, the present utility model provides a clamping device including a main body 210 and a pressing plate 230. The main body 210 is a cylinder with a groove 215 on the circumference, the main body 210 comprises a first end surface 212 and a second end surface 211, the groove 215 can be a rectangular groove with a certain length dimension, a certain width dimension and a certain depth dimension, the groove 215 extends along the axial direction of the main body 210, one end of the groove 215 close to the first end surface 212 is provided with an abutting part 217, the abutting part 217 is formed by the main body 210, and a notch 216 is formed in the second end surface 211 at the second end facing away from the first end surface 212. The pressure plate 230 is removably mounted to the second end surface 211 by fasteners 250, and the edges of the pressure plate are adapted to block the gap 216.

When clamping a plurality of workpieces, the workpieces can be sequentially placed in the grooves 215, one workpiece is abutted against the abutting portion 217, the edge of one workpiece is located on the notch 216 and is flush with the second end face 211 or slightly exceeds the second end face 211, then the pressing plate 230 is pressed on the second end face 211 by the fastener 250, the pressing plate 230 simultaneously presses the workpieces located on the notch 216, and accordingly pressure is transmitted to each workpiece, the workpieces are pressed in the grooves 215, and then the workpieces can be simultaneously machined. So set up, can once only clamp a plurality of work pieces, and then can process a plurality of work pieces simultaneously, simplified the course of working to a plurality of work pieces, improved machining efficiency, shortened machining cycle, reduced processing cost, because a plurality of work pieces are located same recess, can also reduce the processing size tolerance of a plurality of work pieces that are located same recess like this for a plurality of work pieces have the uniformity.

As shown in fig. 5 and 6, in the present embodiment, at least two grooves 215 are arranged at intervals along the circumferential direction of the main body 210, the number of the grooves 215 may be 2, 3, 4 or more, for example, as shown in fig. 6, 10 grooves 215 are arranged at intervals along the circumferential direction of the main body 210, and each groove 215 has the same structure, so that a plurality of workpieces can be sequentially placed in each groove 215, so as to improve the processing efficiency, and the processing dimensional tolerance of the plurality of workpieces in the same groove can be reduced, so that the plurality of workpieces have consistency, and the capability of processing the plurality of workpieces is further improved.

As shown in fig. 5 and 6, in the present embodiment, the groove 215 has a first dimension B1 in the circumferential direction of the main body 210, the first dimension B1 matches with the first dimension A1 of the workpiece 100, or the first dimension A1 has an interference in the range of 0.1mm to 0.05mm relative to the first dimension B1, so that the first workpiece 100 is not easy to be removed from the groove 215, and this arrangement can allow the opposite side wall surfaces of the workpiece 100 to abut against the wall surfaces of the groove 215.

The groove 215 has a second dimension B2 in the axial direction of the main body 210, and the second dimension B2 has a value in a range of N-1 times greater than the second dimension A2 of the workpiece 100 and N times less than the second dimension A2 of the workpiece 100, where N is a positive integer, and N may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more, so that N workpieces 100 can be accommodated in one groove 215, and the edge of the workpiece 100 located at the notch 216 exceeds the second end surface 211, which facilitates the pressing of the workpiece 100 by the pressing plate 230, thereby simultaneously processing N workpieces 100.

For example, the second dimension B2 of the groove 215 may be 0.1mm to 2mm smaller than N times the second dimension A2 of the workpiece 100, that is, may be N times-0.1 mm, N times-0.2 mm, N times-0.3 mm. The range of values may also be less than 0.1mm or greater than 2mm, and the particular values may depend on the physical dimensions of the workpiece 100.

The body has a third dimension B3 in a radial direction, the third dimension B3 being smaller than the third dimension A3 of the workpiece 100, and the first surface 102 of the workpiece 100 may protrude from the circumferential surface 213 of the body 210 when the workpiece 100 is placed in the recess 215 so as to facilitate machining of the workpiece 100, the third dimension B3 also being smaller than the fourth dimension A4 of the part 10 after machining is completed.

As shown in FIG. 7, in one embodiment of the present embodiment, the pressing plate 230 includes a first pressing plate 232 and a second pressing plate 234, and the first pressing plate 232 and the second pressing plate 234 have a semicircular plate-like structure. The outer edges of the first and second pressing plates 232 and 234 may correspond to the outer edges of the upper and lower halves of the second end surface 211, respectively, whereby it may be convenient to place the workpiece 100 in the grooves 215 on both sides of the body 210, for example, after placing the finished workpiece 100 in the groove 215 or grooves 215 on one side of the body 210, the first pressing plate 232 may be press-fitted on the corresponding position of the second end surface 211 by the fastener 250, after pressing the workpiece 100 in the groove 215 or grooves 215, the workpiece 100 is placed in the groove 215 or grooves 215 on the other side of the body 210 in the same manner, and then pressing the second pressing plate 234 on the corresponding position of the second end surface 211.

As shown in fig. 7, in one embodiment of the present embodiment, at least two openings 214 are formed in the second end surface 211, and first through holes 233 and second through holes 235 corresponding to the at least one opening 214 are formed in the first pressing plate 232 and the second pressing plate 234, respectively, and at least two fasteners 250 respectively penetrate through the first through holes 233 or the second through holes 235 to enter the openings, thereby pressing the first pressing plate 232 and/or the second pressing plate 234 against the second end surface 211.

As shown in fig. 8, in another specific implementation of the present embodiment, the pressing plate includes a third pressing plate 231, where the third pressing plate 231 has a circular plate structure, and since the workpiece 100 has an interference relationship with the side wall of the groove 215, after all the workpieces 100 are placed, all the workpieces 100 can be pressed by using the third pressing plate 231.

In another implementation of this embodiment, as shown in fig. 8, third through holes 2311 corresponding to the number and positions of the openings 214 are formed in the third pressing plate 231, and the fasteners 250 pass through the third through holes 2311 to enter the openings.

As shown in FIG. 9, in this embodiment, fastener 250 includes a head 251 and a threaded shank 252, head 251 being adapted to press against first platen 232, second platen 234, and/or third platen 231, aperture 214 being provided with internal threads that mate with external threads of threaded shank 252.

As shown in fig. 10, in the present embodiment, the first end surface 212 is adapted to be mounted on a chuck CP of a lathe, which may be a four-jaw chuck, with which the body 210 may be fixed.

As shown in fig. 11, the present utility model provides a clamping method for a workpiece, which is applied to the clamping device described above, and the clamping method includes:

A plurality of workpieces are sequentially loaded into the grooves of the outer edge of the main body, and the opposite edges of the workpieces are in contact with the opposite side walls of the grooves in the circumferential direction of the main body. As shown in fig. 6, the recess 215 may accommodate a plurality of workpieces 100.

The pressing plate is pressed on the second end face through the fastening piece, and the end face of the pressing plate is simultaneously pressed on the side wall of the workpiece at the notch position. As shown in fig. 5 and 6, the platen 230 may compress the workpiece 100 located in the gap 216.

A plurality of workpieces may be clamped to the body 210 by the above method to facilitate subsequent processing of the workpieces.

In this embodiment, the clamping method further includes:

And a plurality of workpieces are respectively and sequentially arranged in the grooves. As shown in fig. 6, each recess 215 may accommodate a plurality of workpieces.

And pressing the pressing plate on the second end face through a fastener, wherein the end face of the pressing plate is simultaneously pressed on the side walls of the workpieces at the positions of the plurality of gaps. As shown in fig. 5 and 6, the platen 230 may simultaneously compress a plurality of workpieces located at the location of the gap 216.

In this embodiment, the clamping method includes:

Sequentially loading a plurality of workpieces into the groove from the notch, or,

A plurality of workpieces are sequentially loaded from the opening of the groove in the radial direction of the main body.

A plurality of workpieces may be placed in the recess 215 in both ways.

The clamping method in this embodiment has been described in synchronization with the introduction of the clamping device, and the beneficial effects are also described in synchronization, and the description is not repeated here.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (7)

1. A clamping device for a workpiece, comprising:

-a body (210) being a cylinder with a groove (215) on the circumference, the body (210) comprising a first end face (212) and a second end face (211), the groove (215) extending in the axial direction of the body (210), one end of the groove (215) close to the first end face (212) being provided with an abutment (217), the second end facing away from the first end face (212) forming a gap (216) in the second end face (211);

A pressure plate (230) detachably mounted on the second end surface (211) through a fastener (250), wherein the edge of the pressure plate (230) is suitable for sealing the notch (216).

2. Clamping device according to claim 1, characterized in that at least two of the grooves (215) are arranged at intervals along the circumferential direction of the body (210).

3. Clamping device according to claim 1, characterized in that the groove (215) has a first dimension in the circumferential direction of the body (210), a second dimension in the axial direction of the body (210) and a third dimension in the radial direction of the body (210).

4. The clamping device according to claim 1, wherein the pressing plate (230) comprises a first pressing plate (232) and a second pressing plate (234), the first pressing plate (232) and the second pressing plate (234) are of semicircular plate-shaped structures, or the pressing plate (230) comprises a third pressing plate (231), and the third pressing plate (231) is of circular plate-shaped structures.

5. The clamping device according to claim 4, wherein the second end surface (211) is provided with at least two openings, the first pressing plate (232) and the second pressing plate (234) are respectively provided with a first through hole (233) and a second through hole (235) corresponding to at least one opening, at least two fasteners (250) respectively penetrate through the first through hole (233) or the second through hole (235) to enter the openings, or,

Third through holes (2311) corresponding to the number and the positions of the openings are formed in the third pressing plate (231), and the fasteners (250) penetrate through the third through holes (2311) to enter the openings.

6. Clamping device according to claim 5, wherein the fastener (250) comprises a head (251) and a threaded shank (252), the head (251) being adapted to press on the first (232), second (234) and/or third (231) pressure plates, the aperture being provided with an internal thread cooperating with an external thread of the threaded shank (252).

7. Clamping device according to claim 1, characterized in that the first end face (212) is adapted to be mounted on a chuck of a lathe.