CN204770749U - Multipurpose boring cutter pole - Google Patents

Abstract

The utility model belongs to the field of mechanical processing cutters, in particular to a multipurpose boring bar, which solves the problem that the existing boring bar cannot process blind holes and has poor stability. The multi-purpose boring tool bar includes a tool bar body, one end of the tool bar body is provided with a blade mounting hole, and a core bar is provided in the core bar mounting hole inside the tool bar body, and is passed through a compression bolt. One end of the multi-purpose boring bar of the utility model includes a blade mounting hole, and the boring blade can be installed in the blade mounting hole from a direction perpendicular to the axis of the tool bar body to adapt to the processing of blind holes; the boring blade is fixed by the core rod, Strong structural stability; in addition, the insert mounting hole can also install a variety of boring inserts to adapt to the processing of various holes.

Description

A multi-purpose boring bar

technical field

The utility model belongs to the field of mechanical processing cutters, in particular to a multipurpose boring bar.

Background technique

At present, boring tools are roughly divided into split boring bar and integral boring bar. However, in the split type boring tool bar, the bolt supports the insert from the front side of the tool bar. During the machining process, the bolt head is easy to withstand the bottom of the blind hole, and the hole depth cannot be machined. The raw material of the integral boring bar is cemented carbide. For example, when processing parts with high hardness or deep blind holes, the cemented carbide boring tool is prone to vibration. It is not easy to take out the part, causing the whole part to be scrapped.

Utility model content

The utility model provides a multipurpose boring bar to solve the problem that the existing boring bar cannot process blind holes and has poor stability.

Technical scheme of the utility model:

A multipurpose boring bar comprising:

A knife bar body, one end of the knife bar body is provided with a blade installation hole, and the axis of the blade installation hole is perpendicular to the axis of the knife bar body;

The core rod installation hole is located inside the cutter rod body, extends from the end surface of the other end of the cutter rod body along the axis direction of the cutter rod body, and communicates with the blade installation hole;

The core rod is arranged in the core rod installation hole;

Press the bolt, and fix it in the core rod installation hole at the end face of the other end of the tool rod body, and make contact with one end face of the core rod.

Optionally, the core rod installation hole provided with the compression bolt is provided with an internal thread matching the compression bolt.

Optionally, the cutter bar body is conical, and the diameter of the cutter bar body where the blade installation hole is arranged is smaller than the diameter of the cutter bar body where the pressing bolt is arranged.

The beneficial effects of the utility model:

One end of the multi-purpose boring tool bar of the utility model includes a blade mounting hole, and the boring blade can be installed in the blade mounting hole from a direction perpendicular to the axis of the tool bar body, so as to adapt to the processing of blind holes; the boring blade is fixed by the core rod, Strong structural stability; in addition, the insert mounting hole can also install a variety of boring inserts to adapt to the processing of various holes.

Description of drawings

Fig. 1 is the front view of the utility model multi-purpose boring bar;

Fig. 2 is a cross-sectional view of the tool holder body in Fig. 1;

Fig. 3 is a perspective view of the multi-purpose boring bar of the present invention when it is installed;

Fig. 4 is a sectional view of the utility model multi-purpose boring bar;

Fig. 5 is a cross-sectional view of the multi-purpose boring bar of the utility model when it is in use.

Detailed ways

The paddle forming die involved in the present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 5 , a multipurpose boring bar of the present invention includes a bar body 1 .

The tool holder body 1 can be in various suitable shapes, but at least a part of its outer ring surface is matched with the tool seat 6 of the lathe so as to be able to be installed on the tool seat 6 . In this embodiment, the cutter body 1 has a conical shape as a whole, wherein the diameter of the cutter body 1 at the position where the blade mounting hole 2 is set (the left end in FIG. 1 ) is smaller than that at the position where the compression bolt 3 is set (the right end in FIG. 1 ). The diameter of the tool holder body 1.

One end (the left end in FIG. 1 ) of the tool holder body 1 is provided with a blade installation hole 2 , and the axis of the blade installation hole 2 is perpendicular to the axis of the tool holder body 1 . The blade installation hole 2 is generally square, and matches with the installation end of the boring blade 5, and the boring blade 5 is loaded in the blade installation hole 2 through the installation end, and is slidably matched with each surface in the blade installation hole 2.

The core rod mounting hole is located inside the cutter rod body 1, extends from the end face of the cutter rod body 1 other end (the right end in FIG. 1 ) along the axial direction of the cutter rod body 1, and communicates with the blade mounting hole 2. A core rod 4 is arranged in the core rod installation hole, and the length of the core rod 4 is shorter than the length of the core rod installation hole.

The core rod mounting hole at the right end of the cutter body 1 is provided with an internal thread, and the internal thread is provided with a compression bolt 3, and the length of the compression bolt 3 and the core rod 4 is greater than or equal to the length of the core rod installation hole. Through the contact between the compression bolt 3 and the end surface of the core rod 4, the core rod 4 is fixed and squeezed in the core rod installation hole, so that the boring blade 5 is fixed and squeezed in the blade installation hole 2 through the core rod 4, and finally the whole assembly Enter the knife seat 6.

One end of the multi-purpose boring tool bar of the present invention includes a blade mounting hole 2, and the boring blade 5 can be installed in the blade mounting hole 2 from a direction perpendicular to the axis of the tool bar body 1, so as to adapt to the processing of blind holes. The boring blade 5 is fixed by the core rod 4, and the structural stability is strong. A variety of boring blades 5 can also be installed in the blade mounting hole 2, so as to adapt to the processing of various holes. In addition, the multipurpose boring bar of the utility model is easy to disassemble, the blade can be replaced quickly and various blind holes can be processed.

As shown in Figure 5, in the machining process, the axial length of the boring blade 5 (direction perpendicular to the axis of the tool bar body 1) can also be adjusted by adjusting the compression bolt 3, thereby controlling the machining radial depth of the boring blade 5, Not only can deep blind holes be processed, but also stepped holes on complex parts can be completed in one clamping on a lathe, avoiding repeated disassembly, thereby improving the coaxiality and precision between the holes.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the original premise of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (3)

1. a Multipurpose boring cutter bar, is characterized in that, comprising:

Cutter bar body (1), one end of described cutter bar body (1) offers blade mounting holes (2), and the axes normal of described blade mounting holes (2) is in the axis of described cutter bar body (1);

Core bar installing hole, be positioned at the inside of described cutter bar body (1), extend from the end face of described cutter bar body (1) other end along the axis direction of described cutter bar body (1), and be communicated with described blade mounting holes (2);

Core bar (4), is arranged in described core bar installing hole;

Hold-down bolt (3), is fixedly installed in the described core bar installing hole of the end of described cutter bar body (1) other end, and contacts with described core bar (4) one end end face.

2. Multipurpose boring cutter bar according to claim 1, is characterized in that, the described core bar installing hole place being provided with described hold-down bolt (3) offers the internal thread mated with described hold-down bolt (3).

3. Multipurpose boring cutter bar according to claim 1, it is characterized in that, described cutter bar body (1) is in coniform, and the diameter arranging the cutter bar body (1) at described blade mounting holes (2) place is less than the diameter of the cutter bar body (1) arranging described hold-down bolt (3) place.