CN203918501U - A kind of aperture positioning and clamping device - Google Patents

Abstract

The utility model discloses a kind of aperture positioning and clamping device, comprise body, setting element, spring, holder, guide pad and push rod, described body is hollow circular cylinder, described setting element left side is provided with an outer conical surface A, setting element right side is provided with hollow, described holder is hollow, inside is provided with screwed hole and groove, described holder outer surface right side is provided with guide cylinder face A, on described guide pad, be provided with guide cylinder face B, described push rod comprises the external screw thread of left end, the targeting part at middle part and the outer conical surface B of right-hand member, external screw thread and screwed hole screw, and with nut check, described push rod right side penetrates described spring successively, through hole, the endoporus of setting element.The feature of this device is: reasonable in design, simple in structure, easy to operate, there is self-centering action, and positioning precision is high, can be used in the aperture location such as valve body, centre bore, and manufacture craft is simple, is convenient to promote the use of.

Description

A small hole positioning and clamping device

technical field

The utility model belongs to the technical field of machining fixtures and relates to a small hole positioning and clamping device.

Background technique

In the processing of shell or shaft parts, in order to ensure the processing accuracy, the workpiece needs to be accurately positioned and clamped. In terms of technology, in order to reduce the number of fixtures and positioning errors, the processed holes are often used as a unified positioning reference. If the diameter of the processed hole is large, the mandrel positioning can be used. If the processed hole is small and the workpiece is long, the double thimble positioning method is often used. If the processed hole is small and the workpiece is short, the workpiece Ordinary clamping methods cannot be used for positioning and clamping.

Utility model content

In order to make up for the above shortcomings, the utility model provides a reasonable design, simple structure, convenient operation, automatic centering function, high positioning accuracy, can be used in the positioning of small holes such as valve bodies, center holes, etc., and the manufacturing process is simple and convenient. The popularized small hole positioning and clamping device.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

A small hole positioning and clamping device of the utility model includes a body, a positioning element, a spring, a clamping piece, a guide block and a push rod. The side is provided with a cylindrical hole, the left side of the positioning element is provided with an outer conical surface A, the outer conical surface A is in contact with the inner conical surface, and the right side of the positioning element is a hollow part, and the clamping part is a hollow part. Threaded holes and grooves are provided, a guide cylinder surface A is provided on the right side of the outer surface of the clamping piece, a guide cylinder surface B is provided on the guide block, a through hole is provided in the center, and the guide cylinder surface B and the cylinder hole Fixed fit connection, the push rod includes the external thread at the left end, the guide part in the middle and the external conical surface B at the right end, the external thread is screwed into the threaded hole and locked with a nut, and the right side of the push rod penetrates into the Bores for springs, through holes, positioning elements.

As a preferred technical solution, the spring is located between the guide cylinder surface A and the guide block.

As a preferred technical solution, the right end of the positioning element is provided with three radial grooves.

As a preferred technical solution, the body and the positioning element are connected by bolts.

The small hole positioning and clamping device disclosed by the utility model has the advantages of reasonable design, simple structure, convenient operation, automatic centering function, high positioning accuracy, and can be used for positioning small holes such as valve bodies and central holes. Simple and easy to promote and use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the three-dimensional structural schematic diagram of the small hole positioning and clamping device of the present invention;

Fig. 2 is an exploded schematic view of the small hole positioning and clamping device of the present invention;

Figure 3 is a full sectional view of the small hole positioning and clamping device of the present invention;

in,

1. Body; 2. Positioning element; 3. Spring; 4. Clamping piece; 5. Guide block; 6. Push rod; 7. Inner conical surface; 8. Cylindrical hole; 9. Outer conical surface A; 10. Thread Hole; 11, groove; 12, guiding cylindrical surface B; 13, through hole; 14, external thread; 15, guiding part; 16, outer conical surface B; 17, nut; 18, guiding cylindrical surface A; 19, diameter to the groove.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

As shown in Figure 1, Figure 2 and Figure 3, a small hole positioning and clamping device of the present invention includes a body 1, a positioning element 2, a spring 3, a clamping piece 4, a guide block 5 and a push rod 6. The body 1 is a hollow cylinder, the right side of the inner hole is provided with an inner conical surface 7, the left side is provided with a cylindrical hole 8, the left side of the positioning element 2 is provided with an outer conical surface A9, the outer conical surface A9 and the inner conical surface 7 Contact fit, the right side of the positioning element 2 is provided with a hollow part, the clamping part 4 is a hollow part, and the inside is provided with a threaded hole 10 and a groove 11, and the right side of the outer surface of the clamping part 4 is provided with a guiding cylindrical surface A18, the guide block 5 is provided with a guide cylindrical surface B12, and a through hole 13 is provided at the central part, and the guide cylindrical surface B12 is fixedly connected with the cylindrical hole 8. Part 15 and the outer conical surface B16 at the right end, the external thread 14 is screwed into the threaded hole 10, and locked with a nut 17, and the right side of the push rod 6 penetrates into the spring 3, the through hole 13, and the positioning element 2 in turn. hole.

As a preferred embodiment of the utility model, the spring 3 is located between the guide cylinder surface A18 and the guide block 5 .

As a preferred embodiment of the present invention, the right end of the positioning element 2 is provided with three radial grooves 19 .

As a preferred embodiment of the present invention, the body 1 and the positioning element 2 are connected by bolts.

The design concept of the utility model is described above with only one implementation mode. If the system allows, the utility model can be expanded to connect more functional modules at the same time, so as to expand its functions to the maximum extent.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement that is not thought of through creative work should be covered within the scope of protection of the utility model . Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (4)

1. A small hole positioning and clamping device, characterized in that it includes a body (1), a positioning element (2), a spring (3), a clamping piece (4), a guide block (5) and a push rod (6) , the body (1) is a hollow cylinder, an inner conical surface (7) is provided on the right side of the inner hole, a cylindrical hole (8) is provided on the left side, and an outer conical surface A is provided on the left side of the positioning element (2) (9), the outer conical surface A (9) is in contact with the inner conical surface (7), and a hollow part is arranged on the right side of the positioning element (2), and the clamping part (4) is a hollow part, and a threaded hole is arranged inside (10) and a groove (11), the right side of the outer surface of the clamp (4) is provided with a guide cylinder surface A (18), and the guide block (5) is provided with a guide cylinder surface B (12), There is a through hole (13) in the center, and the guiding cylindrical surface B (12) is fixedly connected with the cylindrical hole (8). and the outer conical surface B (16) at the right end, the outer thread (14) is screwed into the threaded hole (10), and locked with a nut (17), and the right side of the push rod (6) penetrates the spring (3) in sequence ), the through hole (13), the inner hole of the positioning element (2). 2. The small hole positioning and clamping device according to claim 1, characterized in that: the spring (3) is located between the guide cylinder surface A (18) and the guide block (5). 3. The small hole positioning and clamping device according to claim 1, characterized in that three radial grooves (19) are provided at the right end of the positioning element (2). 4. The small hole positioning and clamping device according to claim 1, characterized in that: the body (1) and the positioning element (2) are connected by bolts.