CN204565180U - A kind of lathe expanding mandrel device - Google Patents

Abstract

A kind of lathe expanding mandrel device is made up of axle (1), expansion set (2), swelling tapered sleeve (3) and nut (4); It is characterized in that: described expansion set (2) is installed on axle (1) and goes up and evenly process three pairs of grooves, when tightening right part nut (4), by swelling tapered sleeve (3), make expansion set (2) distending, thus realize the effect of holding workpiece.

Description

A lathe expandable mandrel device

technical field

The utility model relates to an expandable mandrel device for a lathe, which belongs to the technical field of mechanical processing.

Background technique

In modern mechanical processing production, especially in lathe production technology, the requirements for turning the inner and outer holes of thin-walled parts are very high. Usually, three chucks are used to clamp the workpiece to process the outer circle or inner hole. In this way, when thin-walled parts are turned After the workpiece is removed after processing, it is found that the deformation is large, and it will be scrapped. In order to save production costs and make the thin-walled parts qualified after machining, it is necessary to design an expandable mandrel device for a lathe.

Utility model content

In order to solve the above problems, the purpose of this utility model is to solve the above-mentioned deficiencies in the prior art. The purpose of this utility model is to provide an expandable spindle device for a lathe.

In order to solve the above problems, the utility model is achieved through the following technical solutions: an expandable mandrel device for a lathe is composed of a mandrel 1, an expansion sleeve 2, an expansion taper sleeve 3 and a nut 4; it is characterized in that: The expansion sleeve 2 described above is installed on the mandrel 1 and three pairs of grooves are evenly processed. When the nut 4 at the right end is tightened, the expansion sleeve 2 is expanded by the expansion taper sleeve 3, thereby realizing the function of clamping the workpiece.

The beneficial effects of the utility model are: an expandable mandrel device for a lathe, which has the advantages of simple structure, convenient operation, low cost, safety and reliability.

Description of drawings

Fig. 1 is a structural schematic diagram of an expandable mandrel device for a lathe.

Detailed ways

As shown in Figure 1, an expandable mandrel device for a lathe is composed of a mandrel 1, an expansion sleeve 2, an expansion taper sleeve 3 and a nut 4; it is characterized in that the expansion sleeve 2 is installed on the mandrel 1 Three pairs of grooves are processed on top and evenly. When the nut 4 at the right end is tightened, the expansion sleeve 2 is expanded by expanding the taper sleeve 3, thereby realizing the effect of clamping the workpiece.

The utility model has been disclosed above with preferred implementations, but it is not intended to limit the utility model. All technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the utility model.

Claims (1)

1. An expandable mandrel device for a lathe is composed of a mandrel (1), an expansion sleeve (2), an expansion taper sleeve (3) and a nut (4); it is characterized in that: the expansion sleeve (2 ) is installed on the mandrel (1) and three pairs of grooves are uniformly processed. When the nut (4) at the right end is tightened, the expansion sleeve (2) is expanded by the expansion taper sleeve (3), thereby realizing the function of clamping the workpiece .