CN103203479A - Double-blade cutting tool with novel structure - Google Patents

Abstract

The invention belongs to the field of cutters for processing large and extra-large ferrules, and mainly relates to a new-type double-blade cutter. A new type of double-blade cutter proposed has two blades with the same shape and size, that is, blade I (4) and blade II (5); the main bias of blade I (4) and blade II (5) The angles are all 45°, the blade I (4) and blade II (5) are arranged in parallel on the same plane of the tool, and the blade I (4) and blade II (5) are arranged forward and backward relative to the feeding direction and Relative to the turning surface of the workpiece, it is set up and down, so that the blade I (4) is in front, the blade II (5) is behind, the blade I (4) is on the top, and the blade II (5) is on the bottom, and the workpiece is turned step by step. A new structure of double-blade knives. The invention not only satisfies the requirement of machining precision, greatly improves the machining efficiency, but also is convenient to adjust, different blade combinations can achieve different cutting effects, and the use cost is greatly reduced.

Description

A new type of double-blade cutter

technical field

The invention belongs to the field of cutters for processing large and extra-large ferrules, and mainly relates to a new-type double-blade cutter.

Background technique

As shown in Figure 1, it is now used to process large and extra-large ferrules mainly with welding tools or tools with a single blade in the machine. The forging margin of large and extra-large ferrules is very large (the margin on one side exceeds 6mm), and when machining the inner surface or outer surface, it is necessary to repeat turning 3 to 4 times to reach the process size, and the processing efficiency is extremely low. For machine tools without cooling water to help dissipate heat, the depth of cut is greatly limited in each cut. If a large depth of cut is used, ordinary blades are not very durable, and the use of special material blades for processing will greatly increase the cost of use. Now it can only be processed with small depth of cut and multiple cuts.

Contents of the invention

In order to solve the above technical problems, the purpose of this invention is to propose a new type of double-blade cutter, which is mainly used for processing large and extra-large ferrules, and can realize large-depth cutting and rough turning and finishing turning at one time.

The present invention adopts following technical scheme for accomplishing the above object:

A double-blade tool with a new structure. The double-blade tool has two blades with the same shape and size, that is, blade I and blade II; the entering angles of blade I and blade II are both 45°, so The blade I and blade II are arranged in parallel on the same plane of the tool, and the blade I and blade II are arranged front and rear relative to the direction of feed and are arranged up and down relative to the turning surface of the workpiece, so that the blade I is in front and the blade II is in the front Finally, the blade I is on the top, and the blade II is on the bottom, a new type of double-blade tool for step-by-step turning of the workpiece.

The blade I and blade II are made of the same material.

The blades I and II are made of different materials.

The blades I and II may have different arcs of the blade tip.

The arc of the tip of the blade II is larger than the arc of the tip of the blade I.

The invention not only satisfies the requirement of machining precision, greatly improves the machining efficiency, but also is convenient to adjust, different blade combinations can achieve different cutting effects, and the use cost is greatly reduced.

Description of drawings

Fig. 1 is a schematic diagram of a bearing ring processed by an existing machine tool.

Figure 2 is a schematic diagram of the present invention.

Fig. 3 is a schematic diagram of the use state of the present invention.

In the figure: 1. Bearing ring, 2. Support positioning column, 3. Clamping claw, 4. Blade I, 5. Blade II.

Detailed ways:

The present invention is described in conjunction with accompanying drawing and specific embodiment:

A double-blade tool with a new structure, the double-blade tool has two blades with the same shape and size, that is, blade I4 and blade II5; the entering angles of the blade I4 and blade II5 are both 45°, and The blade I4 and the blade II5 are arranged on the same plane of the tool in parallel with respect to the direction of feed, one up and one down relative to the turning surface of the workpiece, so that the blade I4 is in front, the blade II5 is behind, and the blade I4 On the top, the blade II5 is on the bottom, a new type of double-blade tool for step-by-step turning of the workpiece. The up and down distance between the blade II5 and the blade I4 can be adjusted as required; if it is necessary to perform cutting with a large margin and a large depth of cut, the up and down distance can be appropriately increased, so that two cuts can be completed in one tool feeding process, and The large amount of cutting is shared by two blades, and the cutting strength of each blade is capable of being performed by ordinary carbide blades. There is no need to increase the cost and use expensive blades. If it is necessary to complete the rough turning and finishing turning in one turn, the up and down distance can be appropriately reduced, and the insert Ⅱ5 can be turned with a small margin to ensure the dimensional accuracy and surface roughness of the machined surface.

The blade I4 and blade II5 can have the same material. During rough turning, if the blade II5 at the back is worn out, it can be installed in the position of the blade I4 in the front for secondary use. This will not affect the cutting effect and can Reduce the cost of use, kill two birds with one stone.

The blade I4 and blade II5 can be made of different materials according to the needs. The blade I4 in the front can be selected to have higher strength than the blade II5 in the back, impact resistance, and a blade that is not sharp to remove the oxide layer and the larger hardness of the forging. Part of the margin; the latter blade Ⅱ5 can choose a blade with higher hardness and sharper blade shape than the front blade Ⅰ4 to remove a small part of the margin, so that the overall cutting effect can not only achieve large depth of cut, but also make full use of the performance of the blade. Conducive to the control of tool cost.

The blade I4 and blade II5 may have different arcs of the tip of the blade. In order to complete the rough turning and finishing turning in one turn, the blade I4 needs to remove most of the margin, and a blade with a smaller arc than the tip of the blade II5 can be selected. This can reduce the cutting resistance; insert II5 needs to remove a small part of the margin, and you can choose an insert with a larger corner arc than the insert I4, which can improve the roughness of the machined surface.

Claims (5)

1. A double-blade cutter with a new structure is characterized in that: the double-blade cutter has two blades with the same shape and size, namely blade I (4) and blade II (5); the blade I ( 4) and blade II (5) have a main deflection angle of 45°, the blade I (4) and blade II (5) are arranged in parallel on the same plane of the tool, and the blade I (4) and blade II (5) Arranged forward and backward relative to the feed direction and set up and down relative to the turning surface of the workpiece, so that the blade I (4) is in front, the blade II (5) is behind, the blade I (4) is on top, and the blade II (5) ) In the following, a new type of double-blade tool for step turning of workpieces. 2. According to claim 1, a new type of double-blade cutting tool, characterized in that: said blade I (4) and blade II (5) are made of the same material. 3. A new-type double-blade cutter according to claim 1, characterized in that: said blade I (4) and blade II (5) are made of different materials. 4. According to claim 1, a novel structure double-blade cutting tool is characterized in that: said blade I (4) and blade II (5) have different cutting edge arcs. 5. A new-type double-blade cutter according to claim 1, characterized in that: the arc of the tip of the insert II (5) is larger than the arc of the tip of the insert I (4).

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