CN104400027B - High-rigidity fine-turning boring tool - Google Patents

Abstract

The invention discloses a high-rigidity fine-turning boring tool, and relates to the technical field of the boring tool and a processing tool of a processing center. The high-rigidity fine-turning boring tool comprises a tool handle and a boring tool rod inserted into a mounting hole in the outer end of the tool handle, wherein the tool handle is provided with a set screw; the boring tool rod is a square rod; the end surface of the inner end of the boring tool rod is provided with a first slope; the end surface of the outer end of the tool handle is provided with a countersink communicated to the boring tool rod; a regulation inclination block is installed in the countersink; the inner end of the regulation inclination block is provided with a second slope; the end surface of the outer end of the regulation inclination block is provided with a thread countersink; the outer end of the countersink of the tool handle is fixedly provided with a plug screw; the plug screw is provided with a regulation screw; the regulation screw is inserted into a plug screw through hole; the inner end of the regulation screw is connected with the thread countersink of the regulation inclination block; a nut on the outer end of the regulation screw is provided with scales; a spring is arranged between the plug screw and the regulation inclination block. The high-rigidity fine-turning boring tool has the advantages of high integral intensity and rigidity, the regulation precision of the boring tool is higher since a combined regulation mechanism of fine threads and a slope is adopted, and regulation can be more conveniently carried out since a regulation operation position is arranged on the end surface of the tool handle.

Description

High Rigidity Fine Adjustment Boring Tool

technical field

The invention relates to a machining tool for a boring machine and a machining center, in particular to a high-rigidity fine-tuning boring tool.

Background technique

A boring tool is a type of boring tool with one or two cutting parts designed for roughing, semi-finishing or finishing an existing hole. Boring tools can be used on boring machines, machining centers or milling machines.

The adjustment of the boring tool generally does not use the method of manual trial cutting, so the adjustment before processing is very important. The adjusted size must be accurate, adjusted to the middle and lower limit of the tolerance of the processed hole, and the influence factors such as temperature should be considered for correction and compensation. Tool adjustment can be performed manually by workers, or on a special presetter, on-machine tool setter or other measuring instruments. However, these knife adjustment methods all have the disadvantages of time-consuming, laborious, labor-intensive, and high technical requirements for operators.

In order to overcome these shortcomings and improve work efficiency, fine-tuning boring tools are often used in coordinate boring machines, automatic lines and CNC machine tools in modern industry. Floating boring cutter, etc. These fine-tuning boring tools have their own characteristics, and they are more convenient to adjust than traditional boring tools in actual production, and the production efficiency is high. However, these fine-tuning boring tools are complex in structure and inconvenient to operate, and the added fine-tuning structure makes the rigidity of the cutter head lower, which affects the machining accuracy.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a high-rigidity fine-tuning boring tool with simple structure, convenient adjustment and high strength and rigidity.

The present invention is achieved through the following technical solutions: a high-rigidity fine-tuning boring tool, including a tool handle installed on a boring machine or a machining center and a boring bar inserted into a mounting hole at the outer end of the tool handle, and a blade is fixed at the outer end of the boring bar ; The handle is provided with a set screw for fastening the boring bar;

The boring bar is a square bar with a bevel I on its inner end face;

There is a counterbore connected to the boring bar on the outer end surface of the handle, and an adjusting inclined block is installed in the counterbore; the inner end of the adjusting inclined block is provided with an inclined plane II matching the inclined plane I of the boring bar, and the adjusting inclined block A threaded counterbore is opened on the outer end face of the block;

A screw plug is fixed at the outer end of the counterbore of the knife handle, and a through hole is opened in the middle of the screw plug;

An adjusting screw is installed on the screw plug, and the adjusting screw is inserted into the through hole of the screw plug, and the inner end of the adjusting screw is connected with the thread counterbore of the adjusting inclined block; the nut at the outer end of the adjusting screw is marked with a scale;

A spring is arranged between the screw plug and the adjusting inclined block.

It further includes: a shaft elastic ring is provided close to the inner end of the screw plug, and the inner ring of the elastic ring is stuck on the adjusting screw.

There are two setscrews arranged at 90° to each other.

The advantages of the present invention are: the combination adjustment mechanism of fine thread and inclined plane is adopted, so that the adjustment accuracy of the boring tool is higher; The strength and rigidity are high, which improves the processing accuracy; the overall structure is simple, and the processing and manufacturing are easy.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the present invention;

Fig. 2 is a top view in Fig. 1;

Fig. 3 is the left view in Fig. 1;

Fig. 4 is a partially enlarged view in Fig. 1 .

In the figure: 1. Knife handle; 2. Boring bar; 3. Blade; 4. Set screw; 5. Adjusting screw; 6. Screw plug; 7. Retaining ring; 8. Spring; 9. Adjusting inclined block.

detailed description

The following is a specific embodiment of the present invention. The present invention will be further described now in conjunction with accompanying drawing.

As shown in Figures 1 to 4, the right end of the tool handle 1 is mounted on the boring machine or machining center, and its left end is cylindrical. The left end of the tool handle 1 has a radial square mounting hole; the square boring bar 2 is mounted on the In the mounting hole of the handle 1, the outer end of the boring bar 2 fixes the blade 3, and the inner end of the boring bar 2 has an inclined plane I; there are two set screws 4 arranged at 90° on the handle 1, and they are fastened. The inner end of the screw 4 can be adjusted and tightened on the surface of the boring tool bar 2; on the left end of the tool handle 1, there is an axial counterbore connected to the installation hole of the tool holder 1, and the adjusting inclined block 9 is fitted in the counterbore of the tool holder 1 Inside, the adjusting inclined block 9 can slide left and right in the counterbore, and the left end of the adjusting inclined block 9 is provided with an inclined plane II matching the inclined plane I of the boring bar 2, and the right end surface of the adjusting inclined block 9 is provided with a threaded counterbore; the screw plug 6 is installed on At the opening of the left end of the counterbore of knife handle 1, screw plug 6 and knife handle 1 are threadedly connected, and a through hole is opened in the middle of screw plug 6; adjusting screw rod 5 is inserted into the through hole of screw plug 6, and its inner end is connected with adjusting inclined block 9 The threaded counterbore connection, the nut on the left end of the adjusting screw 5 is divided into scales; the inner ring of the elastic retaining ring 7 is stuck on the adjusting screw 5, and the elastic retaining ring 7 is close to the right end of the screw plug 6 to ensure that the adjusting screw 5 can be placed on the screw plug. 6 rotates without moving left and right; a spring 8 is arranged between the screw plug 6 and the adjusting inclined block 9 .

The adjusting screw 5 and the adjusting inclined block 9 are connected by fine threads, and the adjusting screw 5 drives the adjusting inclined block 9 to move left and right, the adjusting inclined block 9 and the boring bar 2 contact through the inclined surface, and the adjusting inclined block 9 pushes the boring bar 2 Move up, the present invention makes the adjustment accuracy of the boring tool higher through the combined adjustment mechanism of the thread and the inclined plane; The adjustment is more convenient, and the use of the tool is also more convenient; the square boring bar 2 is installed in conjunction with the square mounting hole on the tool handle 1, and is fastened by two mutually perpendicular set screws 4 to ensure the overall strength and rigidity of the boring tool. Improved machining accuracy.

Claims (3)

1. a kind of high rigidity micrometer adjustement boring tool, including the handle of a knife being arranged on boring machine or machining center（1）Be inserted in handle of a knife（1）Outer end The boring cutter bar of in the hole is installed（2）, boring cutter bar（2）Outer end is fixed with blade（3）；Described handle of a knife（1）It is provided with described for fastening Boring cutter bar（2）Holding screw（4）；

It is characterized in that：

Described boring cutter bar（2）For square pole, its inner end face has an inclined-plane I；

Described handle of a knife（1）Outer end end face has one and is communicated to boring cutter bar（2）Counterbore, regulation skewback is installed in counterbore（9）； Described regulation skewback（9）The inner has and boring cutter bar（2）The inclined-plane II of inclined-plane I cooperation, adjusts skewback（9）Outer end end face has one Screw-threaded counterbore；

In handle of a knife（1）Counterbore outer end is fixed with plug screw（6）, plug screw（6）Centre has a through hole；

In described plug screw（6）On adjusting screw rod is installed（5）, adjusting screw rod（5）Insertion plug screw（6）In through hole, adjusting screw rod（5） The inner and regulation skewback（9）Screw-threaded counterbore connects；Adjusting screw rod（5）Dividing on the nut of outer end has scale；

In described plug screw（6）With regulation skewback（9）Between be provided with spring（8）.

2. high rigidity micrometer adjustement boring tool according to claim 1 it is characterised in that：It is close to described plug screw（6）The inner is provided with one Circlip for shaft（7）, circlip（7）Inner ring is stuck in described adjusting screw rod（5）On.

3. high rigidity micrometer adjustement boring tool according to claim 1 it is characterised in that：Described holding screw（4）Totally two, each other Arrange in 90 °.