Multipurpose knife with positive and negative double knife heads

Abstract

The utility model relates to a multipurpose cutter with positive and negative double cutter heads, which is characterized by comprising a cutter body (51), an internal thread blade (49) and a finish machining blade (50) which are symmetrically fixed on two sides of the cutter body (51), and a plurality of liquid drainage holes (54) distributed along a chip groove of the cutter body (51), and the internal thread blade (49) and the finish machining blade (50) are fixed at an angle of 180 degrees. According to the utility model, the working procedures of finish machining and thread turning of the inner cavity of a workpiece are carried out by adopting the forward and reverse double-tool-bit design, and the tool is moved to the opposite side to turn threads on the premise of not changing the rotating speed direction of a lathe because the back buckle of a thread tool nose faces downwards during operation. According to the tool, the time for switching and clamping the tool is saved, and the problem that the tool needs to be replaced after shutdown is solved. The multipurpose tool with the positive and negative tool bits has the advantages of being high in stability, easy to operate and high in efficiency. The processing range is wide, and the applicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a multi-purpose tool with two reverse cutting heads, which can be equipped with two functional cutting tools at the same time for finishing the inner bore of metal workpieces and subsequent thread turning. Background Technology

[0002] Currently, for the finishing of the inner bore and threading of metal workpieces, the two-step machining process is mostly completed by stopping the machine and changing the tool in stages. However, under the conditions of mass production, frequent tool changes greatly affect the machining efficiency, which in turn leads to a decrease in production capacity and reduced benefits. Utility Model Content

[0003] This utility model provides a multi-purpose tool with both positive and negative cutting heads. The technical problem to be solved is: to solve the problem of reduced production efficiency caused by the need to change tools for the finishing of the inner cavity of metal workpieces and subsequent threading.

[0004] To solve the above technical problems, this utility model provides a multi-purpose knife with double cutting heads, characterized in that it includes: a knife body (51), an internal threaded blade (49) and a finishing blade (50) symmetrically fixed on both sides of the knife body (51), and a plurality of drain holes (54) distributed along the chip removal groove of the knife body (51); the internal threaded blade (49) and the finishing blade (50) are fixed at 180°.

[0005] Furthermore, the drain holes (54) are evenly distributed along the chip removal groove of the cutter body (51), with a quantity of 4-8 holes and a diameter of 2-5 mm.

[0006] Furthermore, the bottom of the cutter body (51) is provided with meshing threads (55) that cooperate with the end of the cutter shank.

[0007] Furthermore, the tip of the internal thread cutting tool (49) is set with the back facing downward, so as to complete the thread turning process when the lathe spindle maintains the same rotation direction.

[0008] Furthermore, the finishing insert (50) is a carbide insert with a cutting edge shape that is either arc-shaped or straight.

[0009] Furthermore, the blade body (51) is made of high-strength alloy steel and its surface is nitrided.

[0010] Furthermore, the internal threading insert (49) is located on the left side of the front end of the cutter body (51), and the finishing insert (50) is located on the right side of the front end of the cutter body (51).

[0011] Furthermore, the meshing thread (55) meshes with the thread at the end of the tool holder and is fixedly connected by a locking bolt (53).

[0012] Furthermore, the meshing thread (55) is a trapezoidal thread or a triangular thread, with a thread depth of 1-3 mm.

[0013] Furthermore, the internal threaded insert (49) and the finishing insert (50) are fixed to the cutter body by insert locking bolts (52).

[0014] Beneficial effects: This utility model employs a double-head design for precision machining of workpiece cavities and thread cutting. During operation, because the thread cutting tip faces downwards, the tool moves to the opposite side to cut threads without changing the lathe's rotational speed. This tool saves time on tool changing and clamping, solving the problem of needing to stop the machine for tool replacement. This double-head multi-purpose tool has the advantages of high stability, simple operation, and high efficiency. It has a wide processing range and strong applicability. Attached Figure Description

[0015] Figure 1 Diagram of a multi-purpose knife with dual cutting heads (positive and negative)

[0016] Figure 2 Processing diagram Detailed Implementation

[0017] To make the purpose, content and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below.

[0018] The present invention proposes a multi-purpose knife with two blades, which consists of an internal thread blade (49), a finishing blade (50), a blade body (51), a blade locking bolt (52), a locking bolt (53), a drain hole (54), and meshing threads (55).

[0019] The finishing insert (50) and the internal thread insert (49) are locked at 180° to both sides of the tool body (51) by insert locking bolts (52). The internal thread insert (49) is located on the left side of the front end of the tool body (51), and the finishing insert (50) is located on the right side of the tool body (51). Multiple drainage holes (54) are provided along the chip removal groove of the tool body (51); the bottom of the tool body (51) is provided with meshing threads (55) that cooperate with the end of the tool shank.

[0020] In use, the finishing insert (50) and the internal thread insert (49) are first locked at 180° to both sides of the tool body (51) by the insert locking bolt (52). The internal thread insert (49) is located on the left side of the front end of the tool body (51), and the finishing insert (50) is located on the right side of the tool body (51). Multiple drainage holes (54) are provided along the chip removal groove of the tool body (51) for the flow of cutting fluid to accelerate the cooling, lubrication and flushing of the machining position and the tool. The bottom of the tool body (51) is provided with meshing threads (55) that cooperate with the end of the tool holder. The meshing threads (55) of the double-head multi-purpose tool are pressed into the meshing threads at the front end of the tool holder and fixed by the locking bolt to achieve a stable and high-strength connection with the tool holder in the axial and radial directions.

[0021] After installation, the dual-head multi-purpose tool is paired with the workpiece and machining begins. Because the threading tip faces downwards, the CNC machine tool can move the spindle in the positive and negative Z-axis directions to perform finishing on the inner end face of the deep hole and subsequent threading, without changing the lathe's rotational speed. This tool greatly saves time on tool changing and clamping.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-purpose knife with double-headed blades, characterized in that, include: The tool body (51), the internal threaded insert (49) and the finishing insert (50) symmetrically fixed on both sides of the tool body (51), and the multiple drainage holes (54) distributed along the chip removal groove of the tool body (51); the internal threaded insert (49) and the finishing insert (50) are fixed at 180°.

2. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The drain holes (54) are evenly distributed along the chip removal groove of the cutter body (51), with a quantity of 4-8 holes and a diameter of 2-5 mm.

3. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The bottom of the cutter body (51) is provided with meshing threads (55) that cooperate with the end of the cutter shank.

4. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The tip of the internal thread cutting tool (49) is set with the back facing downward, and is used to complete the thread turning process when the lathe spindle maintains the same rotation direction.

5. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The finishing insert (50) is a carbide insert with a cutting edge shape that is either arc-shaped or straight.

6. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The blade body (51) is made of high-strength alloy steel and its surface is nitrided.

7. The multi-purpose knife with double cutting heads according to claim 1, characterized in that: The internal threading insert (49) is located on the left side of the front end of the cutter body (51), and the finishing insert (50) is located on the right side of the front end of the cutter body (51).

8. The multi-purpose knife with double cutting heads according to claim 3, characterized in that: The meshing thread (55) meshes with the thread at the end of the tool holder and is fixedly connected by a locking bolt (53).

9. The multi-purpose knife with double cutting heads according to claim 3, characterized in that: The meshing thread (55) is a trapezoidal thread or a triangular thread, with a thread depth of 1-3mm.

10. The multi-purpose knife with double cutting heads according to any one of claims 1-9, characterized in that: The internal threaded insert (49) and the finishing insert (50) are fixed to the cutter body by insert locking bolts (52).

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