CN205325219U - Inner bore positioning clamp - Google Patents

Abstract

The utility model proposes an inner hole positioning fixture, which includes a base and a positioning plate vertically arranged on one side of the base, pressure bars are arranged on the positioning plate, and several cylinders are evenly distributed on the positioning plate, and all The outer circumferences of the cylinders are on the same circumference. The inner hole positioning fixture of the utility model reduces the difficulty of workpiece clamping.

Description

An inner hole positioning fixture

technical field

The utility model relates to the field of positioning fixtures, in particular to an inner hole positioning fixture.

Background technique

When the workpiece with an inner hole is further processed, it is necessary to install the inner hole of the workpiece on the inner hole fixture for positioning. The structure of the existing inner hole positioning fixture includes a base and a positioning plate vertically arranged on one side of the base, wherein, the positioning plate is provided with a positioning ring for positioning the inner hole and a pressing bar for pressing the workpiece, and a quick clamp is provided at the end of the pressing bar. Replace the pressure plate; when the inner hole of the workpiece is positioned on the positioning ring, the pressure rod extends out of the workpiece, and the pressure plate is connected with the pressure rod to fix the workpiece. The positioning ring itself on the existing positioning fixture for the inner hole has processing tolerances, and the inner hole of the workpiece also has processing tolerances. The inner hole of the workpiece is not easy to be clamped on the positioning ring, and the hole wall of the inner hole is easy to be damaged.

Utility model content

The utility model provides an inner hole positioning fixture, which solves the problems of difficult clamping and easy damage of workpieces in the prior art.

The technical scheme of the utility model is achieved in that:

A positioning fixture for an inner hole, comprising a base and a positioning plate vertically arranged on one side of the base, pressure bars are arranged on the positioning plate, several cylinders are evenly distributed on the positioning plate, and all the cylinders The outer circumferences are on the same circumference.

Preferably, in the inner hole positioning jig, the top end of any column is an arc-shaped guiding end.

Preferably, in the inner hole positioning jig, the plurality of cylinders includes eight cylinders.

Preferably, in the inner hole positioning jig, the base is provided with a positioning post for height adjustment.

The beneficial effects of the utility model are: the inner hole positioning fixture of the utility model uses several cylinders to locate the inner hole of the workpiece, and the inner wall of the inner hole is in contact with the outer circumference of several cylinders, reducing the distance between the inner hole and the clamping tool. The contact area reduces the difficulty of clamping the inner hole on the fixture and avoids damage to the workpiece.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. 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 any creative effort.

Fig. 1 is a side view of an inner hole positioning fixture of the present invention;

Fig. 2 is a front view of an inner hole positioning jig of the present invention.

In the picture:

1. Base; 2. Positioning plate; 3. Pressure rod; 4. Cylinder; 5. Clamping column.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

A kind of inner hole positioning fixture as shown in Fig. 1 and Fig. 2, comprises base 1 and the positioning plate 2 that is vertically arranged on one side of base 1, and positioning plate 2 is provided with pressure bar 3, is evenly distributed on positioning plate 2 There are several columns 4, and the outer peripheries of all the columns 4 are on the same circumference. The number of cylinders includes eight cylinders. The base and the positioning plate are integrally cast or fixed by welding.

In order to make the clamping of the workpiece easier, the top of any cylinder 4 is an arc-shaped guide end. The arc-shaped guide end on the cylinder has a guiding effect on the clamping of the workpiece to avoid bumping damage to the workpiece.

In order to fix the workpiece more stably, a clamping post 5 for height adjustment is provided on the base 1 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. a fixture for locating inner hole, including the location-plate of base He the side being vertically set on base, described location-plate is provided with depression bar, it is characterised in that be evenly distributed with several cylinders on described location-plate, and the periphery of all of cylinder is on same circumference。

2. fixture for locating inner hole according to claim 1, it is characterised in that the top of any one cylinder is arcuate guide end。

3. fixture for locating inner hole according to claim 1, it is characterised in that several cylinders described include eight cylinders。

4. fixture for locating inner hole according to claim 1, it is characterised in that be provided with the screens post regulating height on described base。