CN201333535Y - Novel combined turning tool - Google Patents

Abstract

The utility model relates to a lathe tool, especially a novel combination lathe tool, this lathe tool include cutter arbor, carbide tool bit, and its characterized in that opens at the front end of cutter arbor has a through-hole that is used for installing the carbide tool bit. The utility model is characterized in that the wedge-shaped carbide tool bit is directly arranged in a wedge hole arranged at the front end of the cutter bar matched with the wedge-shaped carbide tool bit, other fastening modes are not needed, the carbide tool bit is directly pinned in the wedge hole by depending on the action of cutting force and friction force, and the use and the cutter grinding are very convenient; when a large workpiece is turned, the long-strip-shaped hard alloy cutter head is directly fixed in the hole at the front end of the cutter bar through the bolt, and the chip breaker is arranged on the front cutter face of the hard alloy cutter head, so that only two back faces of the cutter head are ground during sharpening, and the front cutter face and the cutting groove are not required to be sharpened, and the sharpening efficiency can be effectively improved. When the carbide tool bit is used, the carbide tool bit can move forwards along the hole at the front end of the cutter bar, so that the utilization rate of the carbide tool bit is obviously improved.

Description

New Combination Turning Tool

technical field

The utility model relates to a lathe tool, in particular to a novel combined turning tool.

Background technique

At present, in machining, the cemented carbide tools used mainly include welding tools and indexable machine clamping tools. Due to the heat welding of the welding tool, the hardness and cutting performance of the cemented carbide blade are reduced, thereby reducing the durability of the cemented carbide blade, and the rake angle and chip breaker are not easy to grind out when sharpening the knife. When sharpening the knife, the cutter head and the knife rod are sharpened at the same time, the workload of sharpening the knife is large, and after the cutter head is used up, the knife rod is discarded. The waste is huge. The indexable machine holder tool overcomes these defects of the welding tool, but it loses the regrindability of the tool. During the working process, the cutting edge of the blade can be converted to another cutting edge to continue working after the cutting edge is completely indexed. After that, the blade can no longer be used. At this time, the blade body is only worn out by several cutting edges, so the utilization rate of the cemented carbide blade of the indexable machine clamping tool is very low, and a large amount of cemented carbide material is wasted.

Contents of the invention

The purpose of the utility model is to provide a new combination turning tool with high utilization rate of cemented carbide blade and convenient sharpening.

The scheme of the utility model is as follows: a novel combined turning tool, comprising a tool bar and a hard alloy tool head, is characterized in that a through hole for installing a hard alloy tool head is opened at the front end of the tool bar.

There are 1-2 bolts used to fix the carbide cutter head at the front end of the tool holder corresponding to the hole where the carbide cutter head is installed, and the chip breaker is fixed on the carbide cutter through the pressure plate and the bolt matching the pressure plate. on the rake face of the head.

The chip breaker is plate-shaped, and the surface of the chip breaker corresponding to the rake face of the cemented carbide cutter head is an inclined surface or an arc surface.

The above-mentioned through hole for installing the cemented carbide cutter head is a wedge hole.

The above-mentioned cemented carbide cutter head is a cuboid or a wedge.

The features of the utility model are: 1. When turning smaller workpieces, the wedge-shaped hard alloy cutter head is directly installed in the wedge hole opened at the front end of the matching tool rod without other fastening methods, relying on cutting force and The friction force directly pins the cemented carbide cutter head in the wedge hole, which is very convenient to use and sharpen; 2. When turning a large workpiece, the long strip-shaped carbide cutter head is directly fixed to the front end of the tool holder by bolts. In the hole, a chip breaker is installed on the rake face of the carbide tip. Because the hard alloy cutter head protrudes from the cutter bar, only the two rear faces of the cutter head need to be ground out during sharpening, without sharpening the rake face and cutting groove, which can effectively improve the sharpening efficiency. 3. When the carbide cutter head is in use, it can move forward along the hole at the front end of the cutter rod, so that the utilization rate of the carbide cutter head can be significantly improved.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model embodiment 1;

Fig. 2 is the A-A sectional view of the utility model embodiment 1;

Fig. 3 is the three-dimensional view of the cemented carbide cutter head of the utility model embodiment 1;

Fig. 4 is the structural representation of the utility model embodiment 2;

Fig. 5 is the B-B sectional view of the utility model embodiment 2;

Fig. 6 is a perspective view of a cemented carbide cutter head according to Embodiment 2 of the present invention.

Detailed ways

Example 1:

As shown in Figures 1 and 2, the new combined turning tool is composed of a cemented carbide cutter head 6, a cutter bar 4, a bolt 1 for fixing the carbide cutter head, a pressure plate 3 for fixing the chip breaker 5, and a bolt 2. The cutter head 6 is installed in the through hole that the cutter bar 4 front ends open. When in use, install the strip-shaped cemented carbide cutter head 6 in the through hole at the left end of the cutter bar 4, clamp and fix the carbide cutter head on the cutter bar through the bolt 1, and the plate chip breaker through the bolt 2 Press it on the rake face of the cemented carbide cutter head with the pressure plate 3, and the surface corresponding to the rake face of the chip breaker and the cemented carbide cutter head can be an inclined plane or an arc surface, and its purpose is to improve cutting cutting effect. When the carbide tip needs to be sharpened, only the flank face of the carbide tip needs to be sharpened instead of the rake face of the carbide tip, which can effectively improve work efficiency.

When the cemented carbide cutter head is worn, loosen bolt 1 and bolt 2, push the carbide cutter head hole forward, so that the carbide cutter head overhangs 0.5-1MM relative to the cutter bar, and then tighten bolt 1 and bolt 3, you can continue to use.

The hard alloy cutter head can be made into an elongated shape, and the size of the through hole cross section that the cutter bar 4 front end opens matches with the hard alloy cutter head cross section.

Example 2:

When processing smaller parts, the through hole that cutter bar 4 front ends open is wedge hole, and the shape of cemented carbide cutter head 6 matches with wedge hole, is strip wedge shape. During use, the cemented carbide cutter head 6 is installed in the wedge hole, and the cemented carbide cutter head is directly pinned tightly in the wedge hole by the effect of cutting force and friction force, and the cutter bar is directly installed on the lathe tool rest.

Claims (6)

1. A novel combination turning tool, comprising a tool bar and a hard alloy cutter head, is characterized in that a through hole (7) for installing a carbide tool head (6) is opened at the front end of the tool bar (4). 2. The new combined turning tool according to claim 1, characterized in that 1-2 holes for installing the hard alloy cutter head (6) are installed at the front end of the tool bar (4) corresponding to the hole (7) for The bolt (1) for fixing the cemented carbide cutter head, and the chip breaker (5) are fixed on the rake face of the cemented carbide cutter head through the pressure plate (3) and the bolt (2) matched with the pressure plate. 3. The new combined turning tool according to claim 2, characterized in that the chip breaker (5) is plate-shaped, and the surface of the chip breaker corresponding to the rake face of the carbide cutter head is an inclined plane or an arc noodle. 4. The new combination turning tool according to claim 2, characterized in that the above-mentioned through hole (7) for installing the hard alloy bit (6) is a wedge hole. 5. The new combination turning tool according to claim 2, characterized in that the above-mentioned cemented carbide cutter head (1) is a cuboid or wedge. 6. The new combination turning tool according to claim 4, characterized in that the above-mentioned cemented carbide tool head (1) is a wedge-shaped body.

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