CN203390233U

CN203390233U - Single-action double-clamping clamp

Info

Publication number: CN203390233U
Application number: CN201320343505.9U
Authority: CN
Inventors: 吴永旭; 张永泉; 姜娟; 张永
Original assignee: Shanghai East Pump Group Co Ltd
Current assignee: Shanghai East Pump Group Co Ltd
Priority date: 2013-06-17
Filing date: 2013-06-17
Publication date: 2014-01-15
Anticipated expiration: 2023-06-17

Abstract

The utility model discloses a single-action double-clamping clamp. The single-action double-clamping clamp comprises a clamp body, a mandrel and a clamp base plate, wherein the mandrel is arranged in the clamp body; the clamp base plate is connected with the clamp body; the front end of the mandrel is provided with a first shoulder, and the rear end of the mandrel is provided with a second shoulder; both the first shoulder and the second shoulder are conical shoulders; the front end of the clamp body is uniformly provided with three first square holes along the circumferential direction; first positioning blocks are arranged in the first square holes; the rear end of the clamp body is uniformly provided with three second square holes along the circumferential direction; second positioning blocks are arranged in the second square holes; the inner surfaces, in contact with the mandrel, of the first and second positioning blocks are arranged to be cambered surfaces which are matched with the surfaces of the shoulders of the mandrel; the outer surfaces of the first and second positioning blocks are provided with channels; the front end of the mandrel is of a hexagonal structure; a pressing bolt is arranged in the hexagonal structure; an adjusting pad is arranged between the pressing bolt and the first shoulder. According to the single-action double-clamping clamp, simultaneous clamping and positioning of the two ends can be realized, and the clamping speed, the cutting efficiency and the machining accuracy are improved.

Description

A kind of single-acting dual clamping fixture

Technical field

The utility model relates to a kind of fixture of processing use, particularly a kind of single-acting dual clamping fixture.

Background technology

In machining, often use axle location, axle form is a lot, has cylindrical mandrel, has spindle taper; Cylindrical mandrel positioning precision is lower, and circular cone axle is because be single-ended contact, and contact-making surface is less, and frictional force transmitting torque has limited the raising of cutting data, and positioning precision is also restricted; The part that some length is larger, due to processing end-face hole, general axle cannot meet the demands, and therefore only has the novel axle of design could meet processing request.

Not only positioning precision is low for existing general axle, and below processing, the part of (Fig. 1) just can not complete; Because part requires two stomidiums coaxial, and can only first process one end, the reprocessing other end, generally conventional axle has hindered the processing in hole, therefore can not use; Part as shown in Figure 1, general axle just cannot be used, and axle has hindered the cutting movement of cutter.

Utility model content

The technical problems to be solved in the utility model is to provide and a kind ofly realizes simultaneously clamping and positioning of two ends, and has improved a kind of single-acting dual clamping fixture of clamp speeds, stock-removing efficiency and machining accuracy.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of single-acting dual clamping fixture, the fixture chassis that comprises clamp body, is arranged on the axle in clamp body and is connected with clamp body, the front end of described axle is provided with the first shoulder, and the rear end of described axle is provided with the second shoulder, and described the first shoulder and the second shoulder are cone shoulder; The front end edge circumferencial direction of described clamp body is evenly provided with three first holes, is equipped with the first locating piece in described first hole, and the rear end of described clamp body is along the circumferential direction evenly provided with three second holes, is equipped with the second locating piece in described second hole; The inner surface that described the first locating piece contacts with axle with the second locating piece is arranged to the arc surface matching with axle shoulder surface; On the outer surface of described the first locating piece and the second locating piece, be equipped with groove; Described three the first locating pieces and three the second locating pieces are all fixed on clamp body by extension spring, and the front end of described axle is hexahedron structure, and described hexahedron structure is provided with hold-down bolt, between described hold-down bolt and the first shoulder, are provided with adjusting pad.

In an embodiment of the present utility model, described clamp body is connected with fixture chassis by bolt.

In an embodiment of the present utility model, between described clamp body and axle, be provided with spring.

In an embodiment of the present utility model, the right side of described the first shoulder is provided with packing ring.

By technique scheme, the beneficial effects of the utility model are:

The utility model can be fixed longer workpiece and process, and one time clamp operation can realize two ends clamping and positioning simultaneously, improves clamp speeds, stock-removing efficiency and machining accuracy.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is existing Workpiece structure schematic diagram;

Fig. 2 is the utility model clamp body structural representation;

Fig. 3 is the utility model structural representation;

Fig. 4 is the sectional view of the utility model locating piece.

Numeral and the represented corresponding component title of letter in figure:

10, clamp body 11, first hole 12, the first locating piece 13, second hole 14, the second locating piece 20, axle 21, the first shoulder 22, the second shoulder 30, fixture chassis 40, bolt 50, groove 60, extension spring 70, hold-down bolt 80, adjusting pad 90, spring 100, packing ring 110, workpiece.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to shown in Fig. 2 to Fig. 4, a kind of single-acting dual clamping of the utility model fixture, the fixture chassis 30 that comprises clamp body 10, is arranged on the axle 20 in clamp body 10 and is connected with clamp body 10, clamp body 10 is connected with fixture chassis 30 by bolt 40.

The front end of the utility model axle 20 is provided with the first shoulder 21, and axle 20 rear end is provided with the second shoulder 22, and this first shoulder 21 and the second shoulder 22 are cone shoulder.

The front end edge circumferencial direction of the utility model clamp body 10 is evenly provided with three first holes 11, in this first hole 11, be equipped with the first locating piece 12, clamp body 10 rear end is along the circumferential direction evenly provided with three second holes 13, is equipped with the second locating piece 14 in this second hole 13; The first locating piece 12 is similar with the shape of the second locating piece 14, but size is different, and it can be set according to actual needs.

The inner surface that the utility model the first locating piece 12 contacts with axle 20 with the second locating piece 14 is arranged to the arc surface matching with axle shoulder surface; On the outer surface of the first locating piece 12 and the second locating piece 14, be equipped with groove 50; Extension spring 60 links together three the first locating pieces 12 through the groove 50 on three the first locating pieces 12, and is fixed on clamp body 110; Extension spring 60 links together three the second locating pieces 14 through the groove 50 on three the second locating pieces 14, and is fixed on clamp body 10.

The front end of the utility model axle 20 is hexahedron structure (not marking in figure), and hexahedron structure is provided with hold-down bolt 70, between hold-down bolt 70 and the first shoulder 21, is provided with adjusting pad 80, and the thickness of adjusting pad 80 is set according to actual needs.

Between the utility model clamp body 10 and axle 20, be provided with spring 90, spring 90 can guarantee automatically to move backward after axle 20 is unclamped, and locating piece unclamps and takes out workpiece.

The utility model the first shoulder 21 right side is provided with packing ring 100, and the thickness of packing ring 100 is set according to actual needs.

The utility model adds and first packs workpiece 110 into clamp body man-hour, because hold-down bolt does not compress, first, second locating piece diameter under the effect of extension spring is less than the aperture, location of workpiece, so workpiece can be easy to load onto, then live spindle, outwards ejects first, second locating piece by adjusting pad, packing ring, the first shoulder and the second shoulder, thereby by workpiece stretching, owing to being gapless location, so positioning precision is high.Existence due to foozle, so the gauge of adjusting pad should be determined in reality is adjusted, while guaranteeing to compress, the first shoulder contacts with the first locating piece, the second shoulder contacts with the second locating piece, the first locating piece also can make itself and shoulder generation move axially by the effect of spring, thereby guarantee that the second locating piece also produces positioning action after the first locating piece produces positioning action simultaneously, overcome because setting element foozle makes to locate the unstable shortcoming that obtains.

After the utility model processes, hold-down bolt is rotated round about, because the tapering of shoulder and locating piece does not have auto-lock function, under the effect of extension spring, be that locating piece outside diameter diminishes, thereby workpiece can be taken out.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a single-acting dual clamping fixture, it is characterized in that: the fixture chassis that comprises clamp body, is arranged on the axle in clamp body and is connected with clamp body, the front end of described axle is provided with the first shoulder, the rear end of described axle is provided with the second shoulder, and described the first shoulder and the second shoulder are cone shoulder; The front end edge circumferencial direction of described clamp body is evenly provided with three first holes, is equipped with the first locating piece in described first hole, and the rear end of described clamp body is along the circumferential direction evenly provided with three second holes, is equipped with the second locating piece in described second hole; The inner surface that described the first locating piece contacts with axle with the second locating piece is arranged to the arc surface matching with axle shoulder surface; On the outer surface of described the first locating piece and the second locating piece, be equipped with groove; Described three the first locating pieces and three the second locating pieces are all fixed on clamp body by extension spring, and the front end of described axle is hexahedron structure, and described hexahedron structure is provided with hold-down bolt, between described hold-down bolt and the first shoulder, are provided with adjusting pad.

2. a kind of single-acting dual clamping fixture according to claim 1, is characterized in that: described clamp body is connected with fixture chassis by bolt.

3. a kind of single-acting dual clamping fixture according to claim 1, is characterized in that: between described clamp body and axle, be provided with spring.

4. a kind of single-acting dual clamping fixture according to claim 1, is characterized in that: the right side of described the first shoulder is provided with packing ring.