阅读说明：本技术 车轮重车车刀 (Turning tool for turning wheel ) 是由 徐龙 钱玉柱 温晓宁 李军旗 蒋益民 于 2019-09-17 设计创作，主要内容包括：一种用于对车轮进行重车的车轮重车车刀,包括刀体及成型于所述刀体的端面与侧壁交界处的切削刃,所述刀体的端面邻近所述切削刃开设有断屑槽,所述断屑槽内凸设有至少四个长条形断屑凸起,所述至少四个长条形断屑凸起彼此间隔一段距离且不相互平行,所述断屑凸起的延长方向与所述切削刃相交。本发明的车轮重车车刀在断屑槽的底面上设有至少四个断屑凸起,从而使加工过程中所产生的切屑可顺畅排出,有效避免切屑缠绕而影响工件表面质量及加工稳定性。(The utility model provides a wheel turning tool that heavily drives for carrying out the wheel to wheel, includes the cutter body and the shaping in the cutting edge of the terminal surface of cutter body and lateral wall juncture, the terminal surface of cutter body is close to the cutting edge has seted up the chip breaker, protruding at least four rectangular shape chip breaking arch that are equipped with in the chip breaker, a distance and not parallel to each other are separated each other to four rectangular shape chip breaking arch, the bellied extending direction of chip breaking with the cutting edge is crossing. The turning tool for the wheel heavy turning is provided with at least four chip breaking bulges on the bottom surface of the chip breaking groove, so that chips generated in the machining process can be smoothly discharged, and the influence on the surface quality and the machining stability of a workpiece caused by the winding of the chips is effectively avoided.)

1. A wheel turning tool for turning a wheel, comprising: the chip breaker is characterized by comprising a cutter body and a cutting edge formed at the junction of the end surface and the side wall of the cutter body, wherein the end surface of the cutter body is adjacent to the cutting edge and is provided with a chip breaker groove, at least four long-strip-shaped chip breaking protrusions are convexly arranged in the chip breaker groove, the at least four long-strip-shaped chip breaking protrusions are spaced at a certain distance and are not parallel to each other, and the extension direction of the chip breaking protrusions is intersected with the cutting edge.

2. The wheel turning tool of claim 1, wherein: the chip breaker is characterized in that a chip breaking surface is further convexly arranged in the chip breaker, the chip breaking surface faces the side wall of the cutter body, the chip breaking protrusion comprises a first chip breaking protrusion, a second chip breaking protrusion, a third chip breaking protrusion and a fourth chip breaking protrusion, and the first chip breaking protrusion, the second chip breaking protrusion, the third chip breaking protrusion and the fourth chip breaking protrusion are respectively convexly arranged between the edge of the chip breaker and the chip breaking surface.

3. The wheel turning tool of claim 2, wherein: the extension directions of the first chip breaking protrusion, the second chip breaking protrusion, the third chip breaking protrusion and the fourth chip breaking protrusion form included angles with a symmetrical axis of the end face of the cutter body, and the included angles are respectively 38-48 degrees, 53-63 degrees, 70-80 degrees and 85-95 degrees.

4. The wheel turning tool of claim 3, wherein: the included angles between the extension directions of the first chip breaking protrusion, the second chip breaking protrusion, the third chip breaking protrusion and the fourth chip breaking protrusion and the symmetrical axis of the end face of the cutter body are 43 degrees, 58 degrees, 75 degrees and 90 degrees respectively.

5. The wheel turning tool of claim 2, wherein: the bottom surface of the chip breaking groove is gradually inclined downwards from the periphery of the chip breaking groove along the direction of the chip breaking surface.

6. The wheel turning tool of claim 2, wherein: the chip breaking surface is a concave curved surface.

7. The wheel turning tool of claim 1, wherein: the cutting edge comprises an arc edge and a straight edge which are positioned at the chamfer angle of the end surface of the cutter body.

8. The wheel turning tool of claim 7, wherein: the at least four strip-shaped chip breaking bulges comprise at least two chip breaking bulges with the extension directions intersected with the arc blade.

9. The wheel turning tool of claim 7, wherein: the at least four strip-shaped chip breaking bulges comprise at least two chip breaking bulges with the extension directions intersected with the straight edge.

10. The wheel turning tool of claim 7, wherein: the cutting edges of the circular arc edge and the straight edge are positioned at the same height.

11. The wheel turning tool of claim 1, wherein: the cross section of the extending direction of the chip breaking protrusion is in an irregular arc shape.

12. The wheel turning tool of claim 1, wherein: the highest point of the chip breaking protrusion is higher than the cutting edge of the cutting edge.

13. The wheel turning tool of claim 12, wherein: the height difference between the highest point of the chip breaking protrusion and the cutting edge of the cutting edge is 0.02 mm.

Technical Field

The invention relates to the field of machining and repairing of railway locomotives, in particular to a wheel turning tool for turning a rail wheel.

Background

Along with the development of national economy, high-speed trains are gradually popularized, in order to meet the development requirements of high speed and heavy load of railways in China, the requirements on the performance of the structural materials of parts of railway locomotives and corresponding equipment are higher and higher, and various novel and high-performance engineering materials are widely applied, such as: high strength steels, ultra high strength steels, high manganese steels, hardened steels, wear resistant alloyed cast irons, stainless steels, superalloys, high melting point materials, and other specialty materials are increasingly used in modern production.

With the continuous speed increase of railways in China, after a high-speed rail runs for a certain distance, various abrasion of wheels can occur, and the wheel rim and the tread have the problems of deformation and the like.

To ensure wheel balance, tolerances on the outer diameter of the wheel are tighter. Therefore, the frequency of a demand for a heavy load on a wheel of a high-speed train used for a certain period of time is very high. In view of the specific material and specific profile requirements of the railway wheel, the turning tool for re-turning the wheel is different from a common turning tool, and has specific requirements.

Because the removal amount of the heavy vehicle is increased, the precision requirement on the size of the wheel is high, and the heavy vehicle cutter needs to have good cutting capability simultaneously to smooth chip removal capability in order to ensure that the heavy vehicle meets the use requirement. The existing turning tool for the heavy turning of the railway wheel has a small cutting range and low efficiency during processing; if the cutting range is enlarged on the existing turning tool, the problems of unsmooth chip removal and easy breakage are caused.

Disclosure of Invention

In view of the above, the present invention provides a turning tool for turning a wheel capable of overcoming the above-mentioned problems.

The utility model provides a wheel turning tool that heavily drives for carrying out the wheel to wheel, includes the cutter body and the shaping in the cutting edge of the terminal surface of cutter body and lateral wall juncture, the terminal surface of cutter body is close to the cutting edge has seted up the chip breaker, protruding at least four rectangular shape chip breaking arch that are equipped with in the chip breaker, a distance and not parallel to each other are separated each other to four rectangular shape chip breaking arch, the bellied extending direction of chip breaking with the cutting edge is crossing.

The turning tool for the wheel heavy turning is provided with at least four chip breaking bulges on the bottom surface of the chip breaking groove, so that chips generated in the machining process can be smoothly discharged, and the influence on the surface quality and the machining stability of a workpiece caused by the winding of the chips is effectively avoided.

Drawings

Fig. 1 is a perspective view of a turning tool for turning a wheel according to an embodiment of the present invention.

Fig. 2 is a schematic view of an end face of the wheel turning tool of fig. 1.

Fig. 3 is a cross-sectional view of the wheel turning tool of fig. 1 taken along III-III.

Fig. 4 is an enlarged schematic view of a portion IV of the wheel turning tool shown in fig. 3.

Fig. 5 is a side view of the wheel turning tool of fig. 1.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, one embodiment of the present invention provides a turning tool 100 for turning a wheel. The wheel turning tool 100 is capable of performing a turning finish on a wheel, particularly a wheel of a high-speed train. The turning tool 100 for turning a wheel includes a tool body 10 and a cutting blade 20 formed on one end surface of the tool body 10.

The turning tool 100 for a wheel lathe is made of hard materials such as cemented carbide such as tungsten-cobalt alloy, Polycrystalline Diamond (PCD), Chemical vapor deposition Diamond (CVD), monocrystalline Diamond (MCD), Polycrystalline Cubic Boron Nitride (PCBN), ceramic, and high-speed steel.

The cutter body 10 is in the form of a block. The cross-section of the cutter body 10 is a chamfered rectangle. The side wall of the cutter body 10 is provided with a mounting hole 15 at a substantially central position thereof for fixing the turning tool 100 to a tool holder (not shown) in use.

Referring to fig. 2, the end surface of the cutter body 10 is provided with a chip breaker 11. The cutting edge 20 is formed at the boundary between the end surface of the cutter body 10 and the side wall of the cutter body 10. The chip breaker 11 is adjacent to the cutting edge 20.

The cutting edge 20 includes a circular edge 21 and a straight edge 22 located at a chamfer of the end surface of the cutter body 10.

As shown in fig. 5, the cutting edges of the circular-arc blade 21 and the straight-edge blade 22 are at the same height.

In one embodiment, the turning tool 100 includes four circular blades 21 and four straight blades 22 sequentially connecting the four circular blades 21.

The chip breaker 11 is provided with a boss 12 and a chip breaker bulge 13 protruding inwards.

Referring to fig. 2 to 4, the bosses 12 are symmetrically arranged along the symmetry axis a of the end surface of the cutter body 10. The boss 12 includes a top surface 121 and a chip breaking surface 122. The top surface 121 is a flat surface, the chip breaking surfaces 122 are disposed toward the side walls of the tool body 10, and the chip breaking surfaces 122 connect the top surface 121 and the bottom surfaces 111 of the chip breakers 11. The bottom surface 111 of the chip breaker 11 is gradually inclined downward from its peripheral edge in the direction toward the chip breaker surface 122. Further, the chip breaking surface 122 is a concave curved surface to further curl the chips to break the chips.

The chip breaking protrusion 13 is provided between the edge of the chip breaker 11 and the chip breaking surface 122 in a substantially elongated shape, and includes a base surface 135. The base surface 135 is connected to the bottom surface 111. The chip-breaking protrusions 13 comprise at least four protrusions for chip breaking. The chip-breaking protrusions 13 are spaced apart from each other by a distance and are not parallel to each other, and the extension direction of the chip-breaking protrusions 13 intersects the cutting edge 20. In the present embodiment, the chip-breaking protrusion 13 includes a first chip-breaking protrusion 131, a second chip-breaking protrusion 132, a third chip-breaking protrusion 133, and a fourth chip-breaking protrusion 134. The first, second, third and fourth chip-breaking protrusions 131, 132, 133 and 134 extend from the chip-breaking surface 122 in the direction of the cutting edge 20. The extension directions of the first chip-breaking protrusion 131 and the second chip-breaking protrusion 132 intersect with the circular-arc edge 21. The directions of extension of the third chip-breaking protrusions 133 and the fourth chip-breaking protrusions 134 intersect with the straight edge 22. The included angles α 1, α 2, α 3, α 4 between the extending directions of the first, second, third and fourth chip breaking protrusions 131, 132, 133 and 134 and the symmetry axis a of the end surface of the cutter body 10 are respectively 38-48 °, 53-63 °, 70-80 ° and 85-95 °, preferably, the included angles α 1, α 2, α 3, α 4 are respectively 43 °, 58 °, 75 ° and 90 °.

In one embodiment, the cross-sectional profile of the chip-breaking protrusion 13 in the extending direction is an irregular arc, and the vertical distance between the base surface 135 of the chip-breaking protrusion 13 and the bottom surface 111 gradually increases and then gradually decreases in the direction toward the chip-breaking surface 122.

In one embodiment, the highest point of the chip-breaking projection 13 is higher than the edge of the cutting edge 20. The height difference between the highest point of the base surface 135 of the chip-breaking protrusion 13 and the cutting edge of the cutting edge 20 is 0.02 mm.

In the present embodiment, the top surface 121 and the chip breaking surface 122 form a boss 12, but it should be understood that in other embodiments, the chip breaking surface 122 may be formed by protruding in the chip breaking groove 11.

According to the turning tool 100 for the wheel heavy turning, the chip breaking surface 122 is arranged on the bottom surface 111 of the chip breaking groove 11, and the four chip breaking protrusions 13 are arranged around the chip breaking surface 122 at intervals, so that chips with different thicknesses and lengths generated in the machining process are discharged in a controllable direction, and the influence on the surface quality and the machining stability of a workpiece due to the winding of the chips is effectively avoided. The chip breaker surface 122 can limit the direction in which the chips are discharged during machining. In addition, the chip breaking surface 122 is a concave curved surface, and the bottom surface 111 of the chip breaking groove 11 is concave inward in the direction toward the chip breaking surface 122, so that the bottom surface 111 and the chip breaking surface 122 form a substantially V-shaped groove, thereby facilitating the curling of chips, realizing the chip breaking, and ensuring the chip accommodating space of the chip breaking groove 11. The design that the arc blade 21 and the straight edge 22 have the same height does not have height difference, so that when the wheel is turned again, the feed is smoother when the inclined cross lathe tool cuts, and stable chip removal can be realized by combining the four chip breaking protrusions 13 with different angles. In addition, the section of the chip breaking protrusion 13 of the chip breaker 11 is in an irregular arc shape, and the highest point of the chip breaking protrusion 13 is higher than the cutting edge, so that chips generated during machining can be fully curled under the guidance of the chip breaking protrusion 13 and can be quickly discharged from the direction beneficial to discharging, the friction period between the chips and the wheel turning tool is shortened, the heat conduction is reduced, the cutting temperature is reduced, and the service life of the wheel turning tool 100 is prolonged.

In addition, other modifications within the spirit of the invention will occur to those skilled in the art, and it is understood that such modifications are included within the scope of the invention as claimed.