阅读说明：本技术 坦克发动机缸套加工专用阶梯镗铰刀 (Special ladder boring reamer of tank engine cylinder liner processing ) 是由 刘新平 李寒明 周亚杰 张丽娟 于 2021-06-29 设计创作，主要内容包括：本发明是坦克发动机缸套加工的专用阶梯镗铰刀,包括刀体和切削刀刃,所述刀体呈轴对称结构,所述刀体的工作部分外周设置若干合金刀片卡槽,所述卡槽内合金刀片均制成切削刀刃,其中,所述刀刃采用非等分的方式布置,所述刀刃在轴向成阶梯状制成两个不同的工作刀刃,第一刀刃和第二刀刃,以形成不同的切削面。本发明提供的一种坦克发动机缸套加工专用阶梯镗铰刀,切削刃采用非等分的方式布置,避免了切削加工时共振现象的发生,提高加工精度,同时,可以完成多个工作面的加工。(The invention relates to a special stepped boring reamer for machining a tank engine cylinder sleeve, which comprises a cutter body and cutting blades, wherein the cutter body is in an axisymmetric structure, a plurality of alloy blade clamping grooves are formed in the periphery of a working part of the cutter body, and the alloy blades in the clamping grooves are all made into the cutting blades, wherein the cutting blades are arranged in a non-uniform manner, and the cutting blades are axially arranged in a stepped manner to form two different working blades, namely a first cutting blade and a second cutting blade, so as to form different cutting surfaces. According to the stepped boring reamer special for machining the cylinder sleeve of the tank engine, the cutting edges are arranged in a non-equal division mode, the resonance phenomenon during cutting machining is avoided, the machining precision is improved, and meanwhile machining of a plurality of working faces can be completed.)

1. The utility model provides a special ladder boring reamer of tank engine cylinder liner processing, includes the cutter body, the periphery of cutter body sets up a plurality of draw-in grooves, the cutter body is the axisymmetric structure, all set up the cutting edge in the draw-in groove, its characterized in that, the cutting edge adopts the mode of non-partition to arrange, the cutting edge includes first cutting edge and second cutting edge.

2. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the first cutting edges are arranged in four groups.

3. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the second cutting edges are arranged in six groups.

4. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the width of the first cutting edge is between 0.20 and 0.25 cm.

5. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the width of the second cutting edge is between 0.05 and 0.08 cm.

6. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the cutting edge is fixed in the clamping groove in a welding manner.

7. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the first cutting edges are arranged at equal intervals.

8. The stepped boring reamer special for machining the cylinder sleeve of the tank engine as claimed in claim 1, wherein the second cutting edges are arranged at equal intervals.

Technical Field

The invention belongs to the technical field of machining tools, and particularly relates to a stepped boring reamer special for machining a cylinder sleeve of a tank engine.

Background

The engine is one of the core devices of the tank as the power source of the tank, the operational state and performance of the engine can directly influence the operational efficiency of the tank, and the cylinder sleeve is an important component of the engine, so that the performance of the whole engine is directly influenced, and even the performance of the whole tank device is seriously influenced. In the process of machining the cylinder liner, machining of holes, such as machining of straight holes and stepped holes, is often involved. In the existing hole machining process, after a drilling process is finished, a drill bit needs to be replaced by different tools such as a rough boring cutter, a fine boring cutter and the like to perform finish machining work such as removal of metal allowance of a workpiece, adjustment of the hole diameter and the like, so that the accuracy of the hole is ensured to meet requirements. In the course of working at the shoulder hole, except guaranteeing that aperture scheduling problem meets the requirements, still need to guarantee that the centre of a circle of big aperture is in same axis in the shoulder hole, but if use different cutters to carry out the finish machining, the problem of concentricity just can't be guaranteed, and then influences the whole quality of cylinder liner to the operation of tool changing is very loaded down with trivial details in the course of working, produces serious influence to machining efficiency.

Disclosure of Invention

In order to solve the problems, the invention provides a stepped boring reamer special for machining a cylinder sleeve of a tank engine, which comprises a cutter body, wherein a plurality of clamping grooves are formed in the periphery of the cutter body, the cutter body is in an axisymmetric structure, and cutting edges are arranged in the clamping grooves, are distributed in a non-uniform manner and comprise a first cutting edge and a second cutting edge.

Preferably, the first cutting edges are provided in four groups.

In any of the above aspects, it is preferable that the second cutting edges are provided in six groups.

In any of the above aspects, preferably, the width of the first blade edge is between 0.20 and 0.25 cm.

In any of the above aspects, preferably, the width of the second blade is between 0.05 cm and 0.08 cm.

In any of the above embodiments, preferably, the cutting edge is fixed in the slot by welding.

In any of the above aspects, preferably, the first blades are equally spaced.

In any of the above aspects, preferably, the second blades are equally spaced.

The invention has the beneficial effects that: according to the stepped boring reamer special for machining the cylinder sleeve of the tank engine, the cutting edges are arranged in a non-equal division mode, the resonance phenomenon during cutting machining is avoided, and the machining precision is improved.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of a stepped boring reamer specially used for machining a cylinder liner of a tank engine according to the invention;

FIG. 2 is a sectional view A-A of the embodiment A-A of the stepped boring reamer special for machining the cylinder sleeve of the tank engine in the invention.

The figures are labeled as follows: 1, a cutter body; 2-a first blade; 3-second blade.

Detailed Description

In order that the invention may be further understood, the invention will now be described in detail with reference to specific examples.

As shown in fig. 1 and 2, the invention provides a stepped boring reamer special for machining a cylinder sleeve of a tank engine, which comprises a cutter body 1, wherein a plurality of clamping grooves are formed in the periphery of the cutter body 1, the cutter body 1 is of an axisymmetric structure, and cutting edges are arranged in the clamping grooves respectively, wherein the cutting edges are distributed in a non-uniform manner and comprise a first cutting edge 2 and a second cutting edge 3.

Preferably, the first cutting edges 2 are provided in four groups.

In any of the above embodiments, it is preferable that the second blades 3 are provided in six groups.

In any of the above solutions, it is preferable that the width of the first blade 2 is between 0.20 and 0.25 cm.

In any of the above solutions, it is preferable that the width of the second cutting edge 3 is between 0.05 and 0.08 cm.

In any of the above embodiments, preferably, the cutting edge is fixed in the slot by welding.

In any of the above solutions, it is preferable that the first blades 2 are arranged at equal intervals.

In any of the above embodiments, the second cutting edges 3 are preferably arranged at equal intervals.

According to the stepped boring reamer special for machining the cylinder sleeve of the tank engine, the blades are arranged in a non-equal distribution mode, so that the vibration of the machining process of the cutter is reduced, meanwhile, the one-time fine reaming machining of the stepped hole is realized, the original grinding process can be replaced by the reamer, the storage of the cutter is reduced, and the machining efficiency is further improved.

The invention relates to a special unequal tooth pitch compound tool for processing a tank engine cylinder sleeve, which integrates four cutting technological processes of boring processing, milling processing, expanding processing and reaming processing, simultaneously, cutting edges of a working part comprise two groups of cutting edges, one group of milling and boring cutting edges and one group of expanding and reaming cutting edges, the cutting edges are arranged in different arrangement modes in the circumferential direction of the top end of a tool body, namely, the milling and boring cutting edges are symmetrically arranged at equal angles, the expanding and reaming cutting edges are arranged at asymmetric and unequal tooth pitches, the unequal tooth pitch compound tool is divided into a working part and a connecting part, the working part is formed by welding two groups of hard alloy cutting blades on an alloy steel tool body, different chip grooves are formed on the tool body according to different cutting functions of the cutting edges, the connecting part is a clamping part with a clamping groove, and the milling and cutting edges of the working part comprise 4A 425 hard alloy blades, each blade is made into a boring cutting edge and a milling cutting edge, 4 cutting edges are arranged on the 360-degree circumference of the cutter body in a 180-degree symmetrical and 90-degree equal pitch angle mode and are made into a step shape in the longitudinal direction, to respectively finish boring and milling, the reaming and extruding cutting edge consists of 6E 525 superhard carbide blades, each blade is made into a reaming cutting edge and a reaming cutting edge, the 6 blades are arranged in an asymmetric and unequal pitch angle form on 360-degree circumference of the cutter body, the angles are respectively 45 degrees, 55 degrees, 75 degrees, 50 degrees, 65 degrees and 70 degrees, the front half part of the blade is provided with a reaming cutting edge zone, the rear half part is provided with a squeezing cutting edge zone to finish reaming and squeezing machining, the alloy steel cutter body is subjected to quenching and tempering treatment before welding a hard alloy blade, the cutting angle, the front angle, the rear angle and the cutting edge zone of the two groups of blades are different, so as to meet the respective processing requirements, and the runout of each cutting edge in the axial direction is less than 0.01 mm.

The invention changes the tradition in structure, function, type and effect, and has important innovation in theory and practice:

1. two groups of superhard carbide blades with different models are innovatively used, and each group of cutting edges are provided with different cutting angles and are correspondingly provided with different chip accommodating and discharging grooves;

2. the cutting function of each group of blades is not a single cutting function, and the boring and milling function and the reaming and extruding function are combined respectively, so that the integration of the cutter function is realized;

3. the group of blades are arranged according to the traditional symmetrical and equal-angle tooth pitch, and the group of blades are arranged according to the asymmetrical and unequal-angle tooth pitch, so that different indexing layouts are realized on the same tool body;

in the blade group with the asymmetrical unequal pitch angle arrangement, a new angle indexing method, namely an unequal angle indexing method, is verified through experiments.

It will be understood by those skilled in the art that the stepped boring reamer specifically for machining the cylinder liner of the tank engine of the present invention comprises any combination of the summary and the detailed description of the invention in the above description and the parts shown in the drawings, which is limited to the space and does not describe each of the aspects of the combination for the sake of brevity. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.