CN206383254U - A kind of cemented carbide spiral mill - Google Patents

Abstract

The utility model relates to cemented carbide spiral mill, be intended to carry that a kind of cost is low, hardness is high, added during noise is small, cutting easily and a kind of smooth cemented carbide spiral mill of finished surface, the utility model includes handle of a knife, transition part, cutter hub successively, wherein：The cutter hub is provided with several helicla flutes, the cutter hub is provided with several steps, the step shape is to be evenly distributed in by the helix trend of the helicla flute on cutter hub periphery, the step is provided with cutting tip, the cutter hub bottom is provided with clear bottom cutting edge, and the clear bottom cutting edge front portion is provided with chip area.

Description

A carbide helical milling cutter

technical field

The utility model relates to a wood cutting tool, in particular to a hard alloy spiral milling cutter.

Background technique

Milling cutter is the most diverse and widely used type of tool in wood cutting. It generally has one or more cutter teeth. It is widely used in various types of milling equipment to process planes, steps, and grooves. etc. At present, straight-edged welded milling cutters or integral alloy helical milling cutters are generally used on the market. Straight-edged milling cutters have a large cutting force, and are prone to vibration during milling, resulting in poor surface finish. The main feature of the helical milling cutter is that the blade has a helical angle to make the processing smoother. During milling, the blade evenly contacts the surface of the workpiece so that the tool is not easy to wear, and the number of cutting edges ensures the smoothness of the processed surface. However, due to the fact that such helical cutters currently on the market are generally made of solid carbide with high strength but the cost of the cutter is high, especially the helical milling cutter with a larger diameter will cause a lot of waste of raw materials during the manufacturing process; , Cutting is more difficult.

Utility model content

The purpose of the utility model is to provide a cemented carbide helical milling cutter with low cost, high hardness, low noise during machining, easy cutting and smooth machining surface.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a cemented carbide spiral milling cutter, which sequentially includes a handle, a transition part, and a cutter body, wherein: the cutter body is provided with several spiral grooves, The cutter body is provided with several steps, and the shape of the steps is evenly distributed on the outer circular surface of the cutter according to the helical direction of the spiral groove. The steps are provided with cutting blades, and the bottom of the cutter body is provided with There is a clear bottom cutting edge, so that the tool can play the function of vertically lowering the knife during processing. The front part of the clear bottom cutting edge is provided with chip removal grooves, which effectively solves the problem of chip removal at the bottom of the tool when processing materials, making the tool There is no chip accumulation when cutting the knife vertically.

Preferably, the front end of the cutting blade is provided with a concave chip removal groove, which improves the chip removal ability during the use of the tool, so that the accumulated chips first pass through the chip removal groove and then are smoothly discharged along the helical direction of the spiral groove; effectively making the tool processing The noise is lower, the cutting is more balanced, and the machined surface is smoother.

Preferably, the cutter body is provided with 2-5 steps, and the steps are made of alloy material.

Preferably, the cutter body is provided with 2-4 helical grooves, so that the chip removal of the cutter is smoother, and the overall weight of the cutter is reduced.

Preferably, both the cutting blade and the cleaning edge are made of cemented carbide to increase the hardness of the cutter body.

Preferably, the cutting blade is connected to the step by welding, and the clear cutting edge is connected to the bottom of the cutter body by welding, so that the connection is more firm.

Preferably, the cutting blade is 1-1.5mm higher than the cutter body, which is more convenient for sharpening the back angle of the cutter while ensuring the strength of the cutter.

Preferably, the transition part is provided with a bearing, so that the tool can process different arcs or curves according to the model, increasing the use range of the tool; the end surface of the bearing is provided with a retaining spring, which plays the role of axial positioning for the bearing.

Beneficial effects of the utility model: several steps are arranged on the cutter body, and the shape of the steps is evenly distributed on the outer circular surface of the cutter according to the spiral direction of the spiral groove, and cutting blades are arranged on the steps, forming a unit when in use. The smaller cutting surface within a certain period of time achieves the segmented cutting effect. At the same time, due to the helical cutting, the cutting area per unit time is small, the formed wood chips are extremely small, and the cutting surface is smooth and delicate; the structure of the carbide helical milling cutter adopts The above-mentioned structure effectively increases the cutting depth of the tool, saves cost, and has an accurate shape. It can be processed according to the style of the clear cutting edge at the bottom of the cutter body, so that the tool has a clear cutting edge and increases the bearing capacity. As a guide function, it has a multi-purpose effect.

Description of drawings

Fig. 1 is the front view of the utility model

Fig. 2 is the left side view of the utility model

Fig. 3 is the use effect diagram of the utility model

1 is the tool handle, 2 is the transition part, 3 is the cutter body, 4 is the spiral groove, 5 is the cutting blade, 6 is the bottom cleaning cutter, 7 is the concave chip flute, 8 is the chip flute, 9 is the bearing, 10 is jumper.

detailed description

Further explain below in conjunction with accompanying drawing:

As shown in accompanying drawings 1-3: the utility model comprises a knife handle, a transition part, and a knife body in turn, wherein: the knife body is provided with several spiral grooves, and the knife body is provided with several steps, and the The step shape is evenly distributed on the outer circular surface of the cutter according to the helical direction of the spiral groove. The step is provided with a cutting blade, and the bottom of the cutter body is provided with a bottom-clearing cutting edge. The front end of the cutting blade is provided with a chip removal groove, and the front end of the cutting blade is provided with a concave chip removal groove. The cutter body is provided with 2-5 steps, the steps are made of alloy material, and the cutter body is provided with 2 - 4 spiral grooves, the cutting blade and the clear cutting edge are made of hard alloy material, the cutting blade is connected to the step by welding, and the clear cutting edge is connected to the bottom of the cutter body by welding connected, the cutting blade is 1-1.5 mm higher than the cutter body, the transition part is provided with a bearing, and the end face of the bearing is provided with a retaining spring.

Embodiment 1: The cemented carbide spiral milling cutter includes a handle, a transition part, and a cutter body in turn, wherein: the cutter body is provided with several spiral grooves, and the cutter body is provided with several steps, and the shape of the steps is according to the spiral groove. The helical direction of the spiral line is evenly distributed on the outer circular surface of the cutter. There is a cutting blade on the step. The bottom of the cutter body is provided with a clear cutting edge. Concave chip flute, 3 steps on the cutter body, the steps are made of alloy material, 2 spiral grooves on the cutter body, the cutting blade and the cleaning edge are made of carbide material, the cutting blade The step is connected by welding, the bottom-cleaning cutting edge is connected with the bottom of the cutter body by welding, and the cutting blade is 1mm higher than the cutter body.

Embodiment 2: The cemented carbide spiral milling cutter includes a handle, a transition part, and a cutter body in turn, wherein: the cutter body is provided with several spiral grooves, and the cutter body is provided with several steps, and the shape of the steps is according to the spiral groove. The helical direction of the spiral line is evenly distributed on the outer circular surface of the cutter. There is a cutting blade on the step. The bottom of the cutter body is provided with a clear cutting edge. Concave chip flute, 5 steps on the cutter body, the steps are made of alloy material, 4 spiral grooves on the cutter body, the cutting blade and the cleaning edge are made of carbide material, the cutting blade The step is connected by welding, the bottom-cleaning cutting edge is connected with the bottom of the cutter body by welding, and the cutting blade is 1.5mm higher than the cutter body.

Embodiment 3: The cemented carbide spiral milling cutter includes a handle, a transition part, and a cutter body in turn, wherein: the cutter body is provided with several spiral grooves, and the cutter body is provided with several steps, and the shape of the steps is according to the spiral groove. The helical direction of the spiral line is evenly distributed on the outer circular surface of the cutter. There is a cutting blade on the step. The bottom of the cutter body is provided with a clear cutting edge. Concave chip flute, 4 steps on the cutter body, the steps are made of alloy material, 3 spiral grooves on the cutter body, the cutting blade and the cleaning edge are made of carbide material, the cutting blade It is connected to the step by welding, and the bottom-clearing cutting edge is connected to the bottom of the cutter body by welding. The cutting blade is 1.2mm higher than the cutter body. The transition part is provided with a bearing, and the end surface of the bearing is provided with a retaining spring.

The purpose, features and advantages of the utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments. The examples will help to understand the utility model, but do not limit the content of the utility model. All deformations that a person skilled in the art can derive or associate directly from the content disclosed in the utility model shall be considered as the protection scope of the utility model.

Claims (8)

1. A cemented carbide spiral milling cutter comprises successively a handle of a knife, a transition portion, and a cutter body, and is characterized in that: the cutter body is provided with several spiral grooves, and the cutter body is provided with several steps, so The shape of the step is evenly distributed on the outer circular surface of the cutter according to the helical direction of the spiral groove, the step is provided with a cutting blade, and the bottom of the cutter body is provided with a bottom-cleaning cutting edge, and the bottom-clearing cutting edge The front part is provided with flutes. 2. The cemented carbide helical milling cutter according to claim 1, characterized in that: the front end of the cutting insert is provided with a concave chip removal groove. 3. The cemented carbide helical milling cutter according to claim 2, characterized in that 2-5 steps are arranged on the cutter body, and the steps are made of alloy material. 4. The cemented carbide helical milling cutter according to claim 3, characterized in that 2-4 helical grooves are provided on the cutter body. 5. The cemented carbide helical milling cutter according to claim 4, characterized in that: the cutting blade and the clear cutting edge are both made of cemented carbide. 6. The cemented carbide helical milling cutter according to claim 5, wherein the cutting blade is connected to the step by welding, and the bottom-cleaning cutting edge is connected to the bottom of the cutter body by welding. 7. The cemented carbide helical milling cutter according to claim 6, wherein the cutting insert is 1-1.5 mm higher than the cutter body. 8. The cemented carbide helical milling cutter according to claim 7, characterized in that: the transition part is provided with a bearing, and the end surface of the bearing is provided with a retaining spring.