Adjustable cutting knife

Abstract

The utility model discloses an adjustable cutter, and belongs to the field of cutters. The cutting knife comprises a knife body assembly and a knife handle assembly, the knife body assembly is connected with the knife handle assembly, and the knife body assembly can rotate relative to the knife handle assembly; the cutter handle assembly comprises a cutter handle, a gland bolt, a worm and a set screw; the right end part of the cutter handle is provided with an open mounting groove, one side of the mounting groove is provided with a worm which is horizontally arranged and rotationally arranged in the cutter handle, the worm is fixed through a set screw, and a gland bolt is arranged above the mounting groove; the cutter body assembly comprises a cutter body, a worm gear, a rotating shaft and a blade; the blade is arranged on the cutter body, a protruding connecting part is arranged at the left end of the cutter body, a mounting hole is formed in the connecting part, the turbine is located above the mounting hole, the connecting part is inserted into the mounting groove, the rotating shaft sequentially penetrates through the mounting groove, the mounting hole and the turbine from bottom to top, the turbine is fixed through a gland bolt, the turbine is meshed with the worm, and the worm is arranged on the worm. The cutter body is controlled to rotate relative to the cutter handle by rotating the worm.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and more specifically, to an adjustable cutting tool. Background Technology

[0002] Traditional vertical lathes use angle-fixed cutting tools for grooving, typically secured by a tool holder. Figure 1 As shown. The blade angle cannot be adjusted, as... Figure 2 The image shows a beveling cutter with a fixed blade angle. For machining deeper grooves, it is necessary to change to cutters with different angles. Since the cutters used for machining such large workpieces (such as the inner diameter of a steam turbine cylinder) are very heavy, typically around 15 kg, several different angle cutters may need to be changed during turning. Before disassembling, the cutter needs to be retracted, and after replacement, it needs to be re-set. The process also involves handling the cutter, making the process cumbersome and heavy, causing operator fatigue. Frequent changes also result in low machining efficiency and high tool manufacturing costs.

[0003] Therefore, there is an urgent need for an adjustable-angle cutter that can adjust the angle of the cutter as needed without frequent replacements. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an angle-adjustable cutting tool. The angle of the tool can be adjusted arbitrarily as needed, eliminating the need for frequent tool replacements and greatly improving processing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An adjustable cutter includes a cutter body assembly and a cutter handle assembly. The cutter body assembly is connected to the cutter handle assembly, and the cutter body assembly can rotate relative to the cutter handle assembly.

[0007] The tool holder assembly includes a tool holder, a pressure cap bolt, a worm gear, and a set screw; the right end of the tool holder is provided with an open mounting groove, and a horizontally placed worm gear is rotatably installed in the tool holder on one side of the mounting groove and fixed by a set screw; a pressure cap bolt is provided above the mounting groove.

[0008] The blade assembly includes a blade body, a worm gear, a rotating shaft, and a blade. The blade is mounted on the blade body. The left end of the blade body has a protruding connecting part with a mounting hole. The worm gear is located above the mounting hole. The connecting part is inserted into the mounting groove. The rotating shaft passes through the mounting groove, the mounting hole, and the worm gear from bottom to top. The worm gear is fixed by a cover bolt. The worm gear meshes with the worm gear. Rotating the worm gear controls the rotation of the blade body relative to the handle.

[0009] In a further technical solution, a gasket is provided between the turbine and the mounting hole.

[0010] In a further technical solution, the cutter body has a pin hole along the axial direction at the turbine, and the pin is located in the pin hole to prevent the cutter body and the turbine from rotating relative to each other.

[0011] In a further technical solution, the worm gear is tapered at the end furthest from the set screw. The set screw's function is to axially press the worm gear with a locking force to prevent it from shifting, while the other end of the worm gear, through its tapered surface, serves a self-aligning and positioning function.

[0012] In a further technical solution, the tool holder has a worm adjustment hole at the tail of the worm, and a screw connected to the tail of the worm is provided in the hole. The rotation of the worm is controlled by the screwdriver adjustment screw.

[0013] A further technical solution is that the tool holder is provided with angle scale lines. Beneficial effects

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] 1. Compared with existing cutting tools, the angle of the tool body of this utility model is adjustable, which can meet most of the grooving and turning needs. Moreover, due to the use of worm gear adjustment, this utility model has excellent self-locking performance. In addition, the clamping force provided by the cover bolt can effectively prevent the tool body from loosening and falling off during cutting.

[0016] 2. By setting angle scale lines, this utility model allows the operator to directly adjust the angle position of the tool body according to the scale lines during some turning operations that require angle data. There is no need to loosen the tool holder holder. The operator can directly adjust the tool body to the corresponding angle by controlling the rotation of the worm gear through the screwdriver adjusting screw, which improves processing efficiency, reduces the operator's workload, and saves time and effort. Attached Figure Description

[0017] Figure 1 A schematic diagram of an existing cutter mounted on a cutter holder;

[0018] Figure 2 This is a schematic diagram of the structure of an existing oblique cutting tool;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model;

[0020] Figure 4 This is a front view of the tool holder assembly;

[0021] Figure 5 This is a top view of the tool holder assembly;

[0022] Figure 6 This is the front view of the blade assembly;

[0023] Figure 7This is a top view of the blade assembly;

[0024] Figure 8 This is an enlarged view of the joint between the handle assembly and the blade assembly;

[0025] Figure 9 This is an enlarged view of the screw;

[0026] The diagram is labeled as follows: 1. Blade body assembly, 2. Blade handle assembly, 3. Blade handle holder, 4. Cutting blade;

[0027] 2-1. Tool holder; 2-2. Pressure cap bolt; 2-3. Worm; 2-4. Set screw; 2-5. Mounting slot; 2-6. Worm adjusting hole; 2-7. Screw; 2-8. Angle scale line; 1-1. Tool body; 1-2. Worm wheel; 1-3. Shaft; 1-4. Blade; 1-5. Connecting part; 1-6. Mounting hole; 1-7. Washer; 1-8. Pin. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0029] like Figure 3-9 As shown, the adjustable cutter includes a cutter body assembly 1 and a cutter handle assembly 2. The cutter body assembly 1 is connected to the cutter handle assembly 2, and the cutter body assembly 1 can rotate relative to the cutter handle assembly 2.

[0030] The tool holder assembly 2 includes a tool holder 2-1, a cover bolt 2-2, a worm gear 2-3, and a set screw 2-4; the right end of the tool holder 2-1 is provided with an open mounting groove 2-5, and a worm gear 2-3 is provided on one side of the mounting groove 2-5, which is horizontally placed and rotatably installed in the tool holder 2-1 and fixed by the set screw 2-4; the cover bolt 2-2 is provided above the mounting groove 2-5.

[0031] The blade assembly 1 includes a blade body 1-1, a worm gear 1-2, a rotating shaft 1-3, and a blade 1-4. The blade 1-4 is mounted on the blade body 1-1. The left end of the blade body 1-1 has a protruding connecting part 1-5 with a mounting hole 1-6. The worm gear 1-2 is located above the mounting hole 1-6. The connecting part 1-5 is inserted into the mounting groove 2-5. The rotating shaft 1-3 passes through the mounting groove 2-5, the mounting hole 1-6, and the worm gear 1-2 from bottom to top. The worm gear 1-2 is fixed by a cover bolt 2-2. The worm gear 1-2 meshes with the worm 2-3. The rotation of the worm gear 2-3 controls the rotation of the blade body 1-1 relative to the handle.

[0032] A gasket 1-7 is provided between the turbine 1-2 and the mounting hole 1-6 to further ensure the sealing of the turbine installation and to provide cushioning and protection.

[0033] The cutter body 1-1 has a pin hole along the axial direction at the turbine 1-2, and the pin shaft 1-8 is located in the pin hole to prevent the cutter body and the turbine from rotating relative to each other.

[0034] The worm 2-3 is tapered at the end furthest from the set screw 2-4. The set screw can axially press the worm to prevent it from moving, while the tapered end of the worm can be used for self-aligning and positioning during installation by pressing it with the tapered surface.

[0035] The tool holder 2-1 has a worm adjustment hole 2-6 at the tail of the worm 2-3, and a screw 2-7 connected to the tail of the worm is installed in the hole. The rotation of the worm is controlled by adjusting the screw with a screwdriver. When the operator needs to adjust the angle of the tool body, he only needs to insert a screwdriver or other tools into the worm adjustment hole for slight adjustment. Alternatively, the rotation of the worm can be controlled by other adjustment methods to achieve the angle adjustment of the tool body.

[0036] The handle 2-1 is provided with angle scale lines 2-8, which can be used to adjust the angle more precisely according to the scale lines.

[0037] The installation and operation methods of this utility model are as follows:

[0038] 1. The tool holder assembly is a part used to fix the tool body and is also the part where the tool is clamped. The tool body assembly is used to install the cutting blade for cutting the workpiece.

[0039] 2. First, place the connecting part of the tool body assembly into the mounting groove of the tool holder assembly. After the position is aligned and the worm gear is properly engaged, screw it into the rotating shaft to fix it. At the same time, tighten the cover bolts to achieve the connection and fixation of the tool body assembly and the tool holder assembly.

[0040] 3. During machining, the cutting tool is installed in the tool holder of the vertical lathe to perform grooving turning. If the tool body angle needs to be adjusted, simply insert the adjusting screw into the worm gear adjusting hole with a screwdriver or other tools. The screw drives the worm gear to rotate, which in turn drives the turbine to rotate, thereby adjusting the tool body angle. There is no need to disassemble the cutting tool, which results in high machining efficiency and saves time and effort.

Claims

1. An adjustable cutter, characterised in that: It includes a blade assembly and a handle assembly, the blade assembly is connected to the handle assembly, and the blade assembly can rotate relative to the handle assembly; The tool holder assembly includes a tool holder, a pressure cap bolt, a worm gear, and a set screw; the right end of the tool holder is provided with an open mounting groove, and a horizontally placed worm gear is rotatably installed in the tool holder on one side of the mounting groove and fixed by a set screw; a pressure cap bolt is provided above the mounting groove. The blade assembly includes a blade body, a worm gear, a rotating shaft, and a blade. The blade is mounted on the blade body. The left end of the blade body has a protruding connecting part with a mounting hole. The worm gear is located above the mounting hole. The connecting part is inserted into the mounting groove. The rotating shaft passes through the mounting groove, the mounting hole, and the worm gear from bottom to top. The worm gear is fixed by a cover bolt. The worm gear meshes with the worm gear. Rotating the worm gear controls the rotation of the blade body relative to the handle.

2. The adjustable cutter of claim 1, wherein: A gasket is provided between the turbine and the mounting hole.

3. The adjustable cutter of claim 1, wherein: The cutter body has a pin hole along the axial direction at the turbine, and the pin is located in the pin hole to prevent the cutter body and the turbine from rotating relative to each other.

4. The adjustable cutter of claim 1, wherein: The worm gear is tapered at the end furthest from the set screw.

5. The adjustable cutter of claim 1, wherein: The tool holder has a worm adjustment hole at the tail of the worm, and a screw connected to the tail of the worm is installed in the hole. The rotation of the worm is controlled by the screwdriver adjustment screw.

6. The adjustable cutter of claim 1, wherein: The knife handle is provided with angle scale lines.

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