CN205290445U - Special boring grab in end face centre hole on brake valve casing - Google Patents

Abstract

The utility model discloses a special boring grab in end face centre hole on brake valve casing, including positioning components, clamping element, director element and the anchor clamps body, the anchor clamps body is including level and vertical portion, positioning components includes setting spindle, and setting spindle's left end is equipped with the external screw thread with the specific vertical interference fit of portion of clamp, right -hand member, clamping element includes fastening nut and snap washer with setting spindle right -hand member screw -thread fit, the director element is including the bushing plate and the renewable bushing of cover at the bushing plate that are located the vertical portion of anchor clamps body upper end, the utility model discloses the clamping is firm reliable, compact structure, and easy and simple to handle, machining precision and production efficiency are higher, and special boring grab major part all is the standard component in addition, is convenient for choose, can obtain the achievement of low -cost high yield.

Description

A special drilling jig for the center hole of the upper end surface of the brake valve housing

technical field

The utility model relates to a special fixture for mechanical manufacturing, in particular to a special drilling fixture for the center hole of the upper end surface of a brake valve housing.

Background technique

When processing a workpiece on a machine tool, in order to make the surface of the workpiece processed in this process meet the technical requirements such as the size, geometric shape and mutual position with other surfaces specified in the drawing, the workpiece must first be clamped before starting the machine tool. prison. In mechanical processing, the process equipment used to determine the position of the workpiece and clamp it on the machine tool is called the machine tool fixture.

The special fixture is a special device specially designed and manufactured for the processing requirements of a certain process of a certain workpiece. It is generally used in mass production and processing of products. It is the most widely used machine tool fixture in machinery manufacturing plants. It is only used when it is difficult to ensure the machining accuracy of product parts and the production quantity is large when using general machine tool fixtures.

Drilling jigs are mainly used for machining surface holes of workpieces, and are mainly composed of positioning elements, clamping devices, guiding elements and clamping bodies. For workpieces that require hole machining, clamping, positioning and guiding all have a great influence on the machining accuracy.

The drilling jigs used in the past are often accompanied by inconvenient installation and disassembly, difficult clamping of the workpiece, cumbersome operation, low machining accuracy and production efficiency.

Contents of the invention

In order to solve the above existing problems, the utility model provides a special drilling jig for the center hole of the upper end surface of the brake valve housing with compact structure, reliable clamping and simple operation.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a special drilling jig for the center hole of the upper end surface of the brake valve housing, including a positioning element, a clamping element, a guiding element and a clamping body, and the clamping body includes Horizontal and vertical parts, the positioning element includes a positioning mandrel, and the left end of the positioning mandrel is in interference fit with the vertical part of the clamp body, and the right end is provided with external threads; Cooperating fastening nuts and split washers; the guide element includes a drill template located at the upper end of the vertical part of the clamp body and a replaceable drill sleeve set in the drill template.

Further, a bushing is provided between the replaceable drill sleeve and the drill template.

Further, a compression screw is provided on the left side of the replaceable drill sleeve.

Further, the left end of the positioning mandrel is fixed on the vertical part of the clamp body through a nut.

Further, the horizontal part and the vertical part of the clamp body are integrated.

Compared with the prior art, the utility model has the following beneficial effects: the utility model has firm and reliable clamping, compact structure, easy operation, high machining accuracy and high production efficiency, and most of the special drilling fixtures are standard parts, which is convenient Selection can achieve low-cost and high-yield results.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the top view of the utility model;

Fig. 3 is a structural schematic diagram of brake valve parts of the present utility model;

In the figure: 1. Replaceable drill sleeve; 2. Bushing; 3. Drill template; 4. Compression screw; 5. Open washer; 6. Fastening nut; 7. Positioning mandrel; 8. Clamping workpiece; , Clip specific.

The structure and positioning and clamping process of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

detailed description

As shown in Fig. 1-Fig. 2, it is the front view and the top view of the special drilling jig of the utility model, and Fig. 3 is the structure diagram of the brake valve parts of the utility model, that is, the clamping workpiece 8, and the drilling jig of the utility model includes positioning Components, clamping elements, guide elements and clamp body 9, the clamp body 9 is the basic element of the clamp, used to connect and fix the various components and devices on the clamp, making it a whole, the clamp body 9 includes horizontal and vertical part, and its horizontal part and vertical part are an integral structure; the positioning element includes a positioning mandrel 7, the left end of the positioning mandrel 7 interferes with the vertical part of the clamp body 9, and is fixed on the clamp body by a nut 9, the right end of the positioning mandrel 7 is provided with an external thread; the clamping element includes a nut 6 and a split washer 5 that are screwed with the right end of the positioning mandrel 7; The drill template 3 at the upper end of the straight part and the replaceable drill sleeve 1 set in the drill template 3, a bushing 2 is arranged between the replaceable drill sleeve 1 and the drill template 3, and the bush 2 is press-fitted in the drill template 3, In order to prevent the replaceable drill sleeve 1 from sliding up and down or rotating in the drill template 3 holes, a compression screw 4 is also provided on the left side of the replaceable drill sleeve 1 .

During use, use the positioning mandrel 7 to fix the clamping workpiece 8 shown in Figure 3 on the vertical part of the clamp body 9, after confirming that it is fixed, use the split washer 5 and the fastening nut 6 on the right side of the positioning mandrel 7 Clamp the clamping workpiece 8, and finally adjust the position of the replaceable drill bushing 1 in good time to process the center hole on the upper end surface of the clamping workpiece 8; The position between the workpiece and the machine tool is correct, and the fastening nut and split washer are used to keep the workpiece in the fixed position in the fixture, so that the processing can be carried out smoothly.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. On the premise of not departing from the design concept of the present utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the present utility model shall fall within the protection scope of the present utility model.

Claims (5)

1. the Special drill jig of a brake valve housing upper surface centre hole, comprise location element, clamping element, guiding element and clamp body (9), it is characterized in that: described clamp body (9) comprises level and vertical portion, described location element comprises setting spindle (7), and the vertical portion shrink-fit of the left end of setting spindle (7) and clamp body (9), right-hand member are provided with outside screw;Described clamping element comprises the fitting nut (6) with setting spindle (7) right-hand member thread fit and snap washer (5); Described guiding element comprises the drill jig plate (3) being positioned at clamp body (9) upper end, vertical portion and the interchangeable drill bushing (1) being enclosed within drill jig plate (3).

2. the Special drill jig of a kind of brake valve housing upper surface according to claim 1 centre hole, it is characterised in that: it is provided with lining (2) between described interchangeable drill bushing (1) and drill jig plate (3).

3. the Special drill jig of a kind of brake valve housing upper surface according to claim 1 centre hole, it is characterised in that: described interchangeable drill bushing (1) left side is provided with thrust screw (4).

4. the Special drill jig of a kind of brake valve housing upper surface according to claim 1 centre hole, it is characterised in that: described setting spindle (7) left end is fixed on the vertical portion of clamp body (9) by nut.

5. the Special drill jig of a kind of brake valve housing upper surface according to claim 1 centre hole, it is characterised in that: the horizontal part of described clamp body (9) and vertical portion are an entirety.