CN219924762U - Cutting tool and processing equipment - Google Patents

Abstract

The utility model provides a cutting tool and machining equipment, and relates to the technical field of cutting machining equipment. The telescopic buffer structure is arranged in the direction of the moving trend of the cutter head when the cutter head is impacted, the impact force borne by the cutter head is absorbed through compression, the cutter head is prevented from impacting a workpiece to be machined under the action of pressure, the conditions of striking, bundling or letting the cutter are effectively avoided, the use stability of the cutter head is improved, frequent replacement is not needed, and the machining efficiency is effectively improved; the telescopic buffer structure can drive the cutter head to reset after the impact force disappears, so that repeated absorption of the impact force is realized, continuous cutting processing of a workpiece to be processed can be met, the processing quality of the workpiece to be processed can be effectively ensured, and the processing risk can be reduced; in addition, the telescopic buffer structure can properly increase the single cutting amount of the cutter head, effectively reduce the time required by single processing and further improve the processing efficiency.

Description

Cutting tool and processing equipment

Technical Field

The utility model relates to the technical field of cutting machining equipment, in particular to a cutting tool and machining equipment.

Background

The cutting process of the shaft-like structure includes, in addition to the rotary cutting process of the shaft-like structure having a regular outer circle, the rotary cutting process of the shaft-like structure having an irregular outer circle, for example, a structure of a main roller shaft or a squirrel cage.

Because the section of the shaft structure to be processed, which is parallel to the shaft surface, is an irregular outer circle, when the shaft structure rotates for a circle, the change of the machining allowance is larger, the fluctuation of the contact surface of the cutter is larger, and the machining process belongs to the intermittent cutting machining process.

When intermittent cutting is performed, if the cutting amount of the cutter is large, the contact surface of the cutter is easy to cause large impact on the cutter, and the cutter is damaged, pricked or let off, so that the cutter is required to be replaced frequently, the processing efficiency is reduced, and the processing quality and the processing risk of the shaft structure to be processed are easy to be adversely affected; if the cutting amount of the cutter is smaller, the time required for single machining is greatly increased, and the machining efficiency is reduced.

Disclosure of Invention

The utility model solves the problem of reducing the processing risk and improving the processing efficiency while guaranteeing the processing quality of the rotary cutting processing of the shaft structure with the irregular outer circle.

In order to solve the above problems, in one aspect, the present utility model provides a cutting tool, including a tool bit, a telescopic buffer structure, and a tool bar, where the telescopic buffer structure is provided on a side of the tool bar facing a workpiece to be machined and is used for telescopic movement along a first direction, the tool bit is mounted on the tool bar through the telescopic buffer structure, the tool bit is used for abutting against the workpiece to be machined, and the tool bar is used for being mounted on a tool holder of a machining device;

the first direction is the tangential direction of the part to be machined, which is propped against the cutter head, the cutter head is used for moving along the first direction and compressing the telescopic buffer structure, and the telescopic buffer structure is used for driving the cutter head to reset.

Compared with the prior art, the cutting tool has the following beneficial effects: the cutter head is used as a cutting piece for processing a workpiece, the cutter head is connected with a cutter bar used for being installed on the cutter holder through a telescopic buffer structure, so that the cutter head can be connected with the cutter holder through the telescopic buffer structure and the cutter bar, stability of the cutter head in cutting operation is guaranteed, the telescopic buffer structure is located at one side of the cutter bar facing the workpiece and can stretch out and draw back along the first direction, when the cutter head abuts against the workpiece, the processing equipment drives the clamped workpiece to rotate around a rotation center, pressure to the cutter head can be generated at the abutting part of the workpiece and the cutter head in the rotation process, the direction of the pressure force is along the first direction, under the action of the pressure force, the cutter head moves along the first direction, at the moment, the pressure force is transmitted to the telescopic buffer structure through the cutter head, the telescopic buffer structure is compressed along the first direction, the pressure force is absorbed by the telescopic buffer structure, the cutter head moves along the first direction, and the impact on the workpiece to be processed is avoided under the pressure action, therefore the conditions of punching, the cutter head or the cutter head do not need to be replaced frequently, and processing efficiency can be effectively improved; when the pressure is completely absorbed by the telescopic buffer structure, and the cutter head moves along the first direction to stop, the pressure absorbed by the telescopic buffer structure can be released to react with the cutter head, so that the cutter head can be reset, the stability of the cutter head in the processing process is ensured, the repeated absorption of impact force is realized, the continuous cutting processing of a workpiece to be processed can be met, the processing quality of the workpiece to be processed can be effectively ensured, and the processing risk can be reduced; in addition, because of the existence of the telescopic buffer structure, the impact force received by the cutter head in the cutting process is reduced due to the increase of the cutting consumption, the cutting consumption extreme value of the cutter head in the cutting process can be greatly increased, the single cutting consumption of the cutter head can be properly increased, the time required by single processing is effectively reduced, and the processing efficiency is further improved.

Optionally, the cutter arbor includes cutter arbor body and support base, the cutter arbor body is used for installing on the cutter holder, the cutter arbor body is used for facing towards the terminal surface of waiting to add the work piece is first terminal surface, support base with the tool bit all is used for locating first terminal surface with wait to add between the work piece, the tool bit with support base follows the first direction sets gradually, support base with first terminal surface fixed connection, the tool bit passes through flexible buffer structure with support base is connected, flexible buffer structure with first terminal surface is followed first direction sliding connection.

Optionally, the telescopic buffer structure includes telescopic buffer assembly and sliding support, sliding support passes through telescopic buffer assembly with support the base is connected, the tool bit is installed on the sliding support, sliding support be used for with first terminal surface sliding connection, and be used for following the reciprocal slip of first direction, the tool bit is used for passing through sliding support removes and compresses telescopic buffer assembly, telescopic buffer assembly is used for passing through sliding support drive the tool bit resets.

Optionally, a sliding rail is disposed on the first end face along the first direction, and the telescopic buffer structure is slidably connected with the first end face through the sliding rail.

Optionally, the sliding support comprises a support plate and a sliding plate, the sliding plate is arranged on the first end face in a sliding manner along the first direction, the support plate is vertically connected with the sliding plate and is connected with the support base through the telescopic buffer assembly, the end part of the cutter head, which faces the first end face, is connected with the sliding plate, and the end part of the cutter head, which faces the support base, is connected with the support plate.

Optionally, the flexible buffering subassembly includes hydraulic buffer, the sliding support orientation support the one end of base is equipped with the back shaft, support the base on follow the first direction be equipped with be used for supplying the back shaft penetrates the buffer hole, hydraulic buffer is used for following the buffer hole deviates from the one end of sliding support penetrates and installs, the tool bit is used for through sliding support with the back shaft is followed the buffer hole removes, and compresses hydraulic buffer, hydraulic buffer is used for through the back shaft with sliding support drives the tool bit resets.

Optionally, the telescopic buffer assembly further comprises an elastic gasket, and the elastic gasket is sleeved on the support shaft and is arranged between the sliding support and the support base.

Optionally, an included angle between the main cutting edge of the tool bit and the second direction is 45 degrees, and the second direction is a feeding direction of the tool bit towards the workpiece to be machined.

Optionally, the cutter arbor body includes perpendicular installation pole and the bracing piece that is connected, the installation pole is used for installing on the cutter holder, the bracing piece is followed the first direction sets up, and through support the base with flexible buffer structure with the tool bit is connected.

In another aspect, the present utility model also provides a machining apparatus comprising a tool holder and a cutting tool as described above.

Compared with the prior art, the processing equipment has the same beneficial effects as the cutting tool, and the beneficial effects are not repeated here.

Drawings

FIG. 1 is a schematic view of a cutting tool according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a cutting tool from another perspective in accordance with an embodiment of the present utility model;

fig. 3 is a schematic view of a cutting tool according to another embodiment of the present utility model.

Reference numerals illustrate:

1-a cutter head; 11-main cutting edge; 2-a telescopic buffer structure; 21-a telescopic buffer assembly; 211-a hydraulic buffer; 212-an elastic washer; 22-sliding support; 221-supporting plates; 222-a sliding plate; 223-a support shaft; 3-a cutter bar; 31-a cutter bar body; 311-mounting a rod; 312-supporting rods; 32-a support base; 321-buffer holes; 4-to-be-machined piece.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the coordinate system XYZ provided herein, the forward direction of the X axis represents the right direction, the reverse direction of the X axis represents the left direction, the forward direction of the Y axis represents the rear direction, the reverse direction of the Y axis represents the front direction, the forward direction of the Z axis represents the upper direction, and the reverse direction of the Z axis represents the lower direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present utility model and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

In one aspect, an embodiment of the present utility model provides a cutting tool, including a tool bit 1, a telescopic buffer structure 2, and a tool bar 3, where the telescopic buffer structure 2 is disposed on a side of the tool bar 3 facing a workpiece 4 and is used for telescopic movement along a first direction, the tool bit 1 is mounted on the tool bar 3 through the telescopic buffer structure 2, the tool bit 1 is used for abutting against the workpiece 4, and the tool bar 3 is used for being mounted on a tool holder of a processing device; the first direction is the tangential direction of the part to be machined 4 at the position propped against the tool bit 1, the tool bit 1 is used for moving along the first direction and compressing the telescopic buffer structure 2, and the telescopic buffer structure 2 is used for driving the tool bit 1 to reset.

It should be noted that, as shown in fig. 1, when the workpiece 4 is processed, the abutting portion of the tool bit 1 and the workpiece 4 is located on the same horizontal line with the rotation center of the workpiece 4, so, when the workpiece 4 rotates around the rotation center, the abutting portion of the workpiece 4 with the tool bit 1 is the contact portion of the outer circle of the shaft structure with the tool bit 1, the tangential direction of the abutting portion is the tangential direction of the point of the outer circle of the shaft structure, the tangential direction is perpendicular to the direction of the rotation center, and the tangential direction is the moving direction of the point of the abutting portion on the outer circle of the shaft structure, that is, the first direction is the Z-axis direction.

The workpiece 4 is a shaft structure to be processed, such as a main roll shaft or a squirrel cage.

In this embodiment, as shown in fig. 1, a tool bit 1 is provided as a cutting element when a workpiece 4 is to be machined, the tool bit 1 is connected with a tool holder 3 used for being mounted on a tool holder through a telescopic buffer structure 2, so that the tool bit 1 can be connected with the tool holder through the telescopic buffer structure 2 and the tool holder 3, stability of the tool bit 1 during cutting operation is guaranteed, the telescopic buffer structure 2 is located at one side of the tool holder 3 towards the workpiece 4 and can stretch out and draw back along a first direction, when the tool bit 1 abuts against the workpiece 4, the machining equipment drives the clamped workpiece 4 to rotate around a rotation center, pressure to the tool bit 1 is generated at the abutting position of the workpiece 4 in the rotation process, the direction of the pressure is along the first direction, and under the action of the pressure, the tool bit 1 has a tendency to move along the first direction, at this moment, the pressure is transmitted to the telescopic buffer structure 2 through the tool bit 1, the telescopic buffer structure 2 is compressed along the first direction, the pressure is absorbed by the telescopic buffer structure 2, the tool bit 1 moves along the first direction, and impact on the workpiece 4 to be machined under the action of the pressure is avoided, therefore, the tool bit 1 can be effectively lifted, the tool bit 1 can be effectively replaced, the stability is avoided, and the tool bit 1 can be effectively replaced, and the tool bit can be stably is not required to be replaced, and the situation is always is not required; when the pressure is completely absorbed by the telescopic buffer structure 2 and the cutter head 1 stops moving along the first direction, the pressure absorbed by the telescopic buffer structure 2 is released and counteracts the cutter head 1, so that the cutter head 1 can be reset, the stability of the cutter head 1 in the machining process is ensured, the repeated absorption of impact force is realized, the continuous cutting machining of the workpiece 4 to be machined can be met, the machining quality of the workpiece 4 to be machined can be effectively ensured, and the machining risk can be reduced; in addition, because of the existence of the telescopic buffer structure 2, due to the increase of the cutting amount, the impact force received by the cutter head 1 in the cutting process is reduced, the cutting amount extreme value of the cutter head 1 in the cutting process can be greatly increased, the single cutting amount of the cutter head 1 can be properly increased, the time required by the single machining is effectively reduced, and the machining efficiency is further improved.

It should be noted that, in this embodiment, the distance that the telescopic buffer structure 2 can be compressed along the first direction is a preset distance, and the telescopic buffer structure 2 can be adjusted to obtain the distance, and after the telescopic buffer structure is impacted and moved along the first direction by a preset distance, the tool tip of the tool bit 1 and the rotation center of the workpiece 4 to be machined are positioned on the same horizontal line, and the tool bit 3 in the tool holder is positioned on the same horizontal line, so that the machining precision can be ensured, the tool bit 3 can be used as a stable supporting force for the tool bit 1, and the stability of the tool bit 1 during cutting operation is ensured.

It should be noted that, in this embodiment, the workpiece 4 is a squirrel cage, a plurality of steel plates are distributed on the roller body of the squirrel cage, when the squirrel cage is processed, the tool bit 1 is propped against one steel plate on the roller body of the squirrel cage, the telescopic buffer structure 2 is compressed by pressure, the impact force generated by the steel plate is absorbed, the vibration of the steel plate can be avoided while the impact force of the workpiece 4 is reduced, the tool bit 1 cuts one steel plate according to the feeding amount while the telescopic buffer structure 2 is kept compressed, after the cutting of a single steel plate is completed, the tool bit 1 enters the interval between the steel plates, at this time, the impact force of the steel plate to the tool bit 1 disappears, the telescopic buffer structure 2 releases the absorbed impact force, the tool bit 1 resets, when the tool bit 1 is propped against the next steel plate, the above processes are repeated, the situation that the tool bit 1 is easy to be damaged under the impact effect and the reverse impact of the tool bit 1 to the steel plate causes the vibration is effectively avoided.

Optionally, the cutter bar 3 includes cutter bar body 31 and support base 32, cutter bar body 31 is used for installing on the cutter holder, cutter bar body 31 is used for being first terminal surface towards the terminal surface of waiting to work piece 4, support base 32 and tool bit 1 all are used for locating between first terminal surface and waiting to work piece 4, tool bit 1 and support base 32 set gradually along first direction, support base 32 and first terminal surface fixed connection, tool bit 1 is connected with support base 32 through flexible buffer structure 2, flexible buffer structure 2 and first terminal surface along first direction sliding connection.

In this embodiment, as shown in fig. 1, the first end face is an end face of the cutter bar body 31 opposite to the Y axis.

In this embodiment, as shown in fig. 1 to 3, in order to ensure the stability of extension and contraction of the extension and contraction buffer structure 2 and the stability of movement of the tool bit 1, a tool bar body 31 and a support base 32 are provided, and a tool bar 3 is formed, wherein the tool bar body 31 is mountable on the tool holder, and the support base 32 and the tool bit 1 are both located between the tool bar body 31 and the workpiece 4 to be machined, the tool bit 1 and the support base 32 are sequentially arranged along a first direction, the support base 32 is fixedly connected with a first end face, the tool bit 1 is connected with the support base 32 through the extension and contraction buffer structure 2, and the extension and contraction buffer structure 2 can slide along the first direction, so that when the tool bit 1 receives an impact force, the tool bit 1 has a trend of moving along the first direction, the extension and contraction buffer structure 2 is compressed by the pressure of the tool bit 1 and slides along the first direction, the stability of movement of the tool bit 1 is ensured, moreover, the support base 32 is connected with the tool holder through the tool bar body 31 and is located at one end of the extension and contraction buffer structure 2, which is away from the tool bit 1 along the first direction, the stability of extension and contraction buffer structure 2 in extension and contraction direction can be provided, the stability of the extension and contraction buffer structure is ensured, and contraction buffer structure 2, and the stability of movement of the tool bit 1 is further driven along the first direction.

In the present embodiment, the support base 32 and the cutter bar body 31 are integrally formed, and in other embodiments of the present utility model, the support base 32 may be fixedly connected to the cutter bar body 31 by a connection method such as welding.

Optionally, the telescopic buffer structure 2 comprises a telescopic buffer assembly 21 and a sliding support 22, the sliding support 22 is connected with the supporting base 32 through the telescopic buffer assembly 21, the cutter head 1 is mounted on the sliding support 22, the sliding support 22 is used for being slidingly connected with the first end face and used for sliding back and forth along the first direction, the cutter head 1 is used for moving and compressing the telescopic buffer assembly 21 through the sliding support 22, and the telescopic buffer assembly 21 is used for driving the cutter head 1 to reset through the sliding support 22.

In this embodiment, as shown in fig. 1 to 3, in order to ensure the movement stability of the cutter head 1, a telescopic buffer assembly 21 and a sliding support 22 are provided to form a telescopic buffer structure 2, wherein the cutter head 1 is mounted on the sliding support 22, the sliding support 22 is connected with a supporting base 32 through the telescopic buffer assembly 21, and the sliding support 22 is slidably connected with a first end face and can slide back and forth along a first direction, so that when the cutter head 1 receives an impact force, the telescopic buffer assembly 21 can be compressed through the sliding support 22, and the first end face can provide a support for the sliding support 22 in a horizontal direction, so that the cutter head 1 can only move downwards along the first direction when the cutter head 1 receives the impact, limit the cutter head 1 is ensured, and the telescopic buffer assembly 21 can release pressure through the sliding support 22, and drive the cutter head 1 to reset under the supporting effect of the supporting base 32.

It should be noted that, in this embodiment, the tool bit 1 is mounted on the sliding support 22 by a welded connection mode, and the tool bit 1 on the sliding support 22 can be detached by a disassembly mode such as cutting, so that the tool bit 1 can be replaced when damaged.

Optionally, a sliding rail is arranged on the first end face along the first direction, and the telescopic buffer structure 2 is slidably connected with the first end face through the sliding rail.

In this embodiment, a sliding rail disposed along a first direction is disposed on the first end surface, and the telescopic buffer structure 2 is slidably connected with the first end surface through the sliding rail, so as to guide movement of the tool bit 1, and ensure stability of movement of the tool bit 1.

In this embodiment, the sliding support 22 of the telescopic buffer structure 2 is provided with a sliding groove, and the sliding rail is disposed in the sliding groove.

Optionally, the sliding support 22 includes a support plate 221 and a sliding plate 222, the sliding plate 222 is slidably disposed on the first end surface along the first direction, the support plate 221 is vertically connected to the sliding plate 222 and is connected to the support base 32 through the telescopic buffer assembly 21, the end of the tool bit 1 facing the first end surface is connected to the sliding plate 222, and the end of the tool bit 1 facing the support base 32 is connected to the support plate 221.

In this embodiment, as shown in fig. 1 to 3, a support plate 221 and a sliding plate 222 are provided to form the sliding support 22, where the sliding plate 222 is slidably disposed on the first end face along the first direction, and the support plate 221 is vertically connected with the sliding plate 222, so that the support plate 221 is connected with the support base 32 through the telescopic buffer assembly 21, the end portion of the tool bit 1 facing the first end face is connected with the sliding plate 222, and the end portion of the tool bit 1 facing the support base 32 is connected with the support plate 221, so that the tool bit 1 can slide on the first end face along the first direction through the sliding plate 222, and the telescopic buffer assembly 21 can be compressed through the support plate 221, so as to ensure the moving stability of the tool bit 1.

It should be noted that, in the present embodiment, the support plate 221 and the sliding plate 222 are integrally formed to have an L-shaped structure, and in other embodiments of the present utility model, the sliding support 22 may be provided to have a hollow structure with an opening facing the workpiece 4, and the tool bit 1 is disposed in the hollow structure and protrudes from the opening end.

In the present embodiment, the connection between the tool bit 1 and the support plate 221 and the connection between the tool bit and the slide plate 222 are all welded.

In this embodiment, for example, a sliding groove may be disposed on an end surface of the sliding plate 222 facing the first end surface along the first direction, and a sliding rail on the first end surface may be disposed in the sliding groove.

Alternatively, the telescopic buffer assembly 21 comprises a hydraulic buffer 211, a support shaft 223 is arranged at one end of the sliding support 22 facing the support base 32, a buffer hole 321 for the support shaft 223 to penetrate is arranged on the support base 32 along a first direction, the hydraulic buffer 211 is used for penetrating and installing from one end of the buffer hole 321, which is away from the sliding support 22, the cutter head 1 is used for moving along the buffer hole 321 through the sliding support 22 and the support shaft 223, the hydraulic buffer 211 is compressed, and the hydraulic buffer 211 is used for driving the cutter head 1 to reset through the support shaft 223 and the sliding support 22.

In this embodiment, as shown in fig. 1 to 3, a hydraulic buffer 211 is provided to provide power for resetting the cutter head 1, wherein, one end of the sliding support 22 facing the supporting base 32 is provided with a supporting shaft 223 capable of being placed into a buffer hole 321 on the supporting base 32, the moving direction of the sliding support 22 is further limited by the connection of the buffer hole 321 and the supporting shaft 223, and further the moving stability of the cutter head 1 is ensured, while the hydraulic buffer 211 is penetrated and installed by one end of the buffer hole 321 facing away from the sliding support 22, when the sliding support 22 moves along the first direction, one end of the hydraulic buffer 211 facing the supporting shaft 223 is propped against the supporting shaft 223 and compressed to absorb the impact force received by the cutter head 1, and after the impact force received by the cutter head 1 disappears, the hydraulic buffer 211 releases the absorbed impact force again, and drives the cutter head 1 to reset through the supporting shaft 223.

It should be noted that, in this embodiment, the hydraulic buffer 211 is screwed with the buffer hole 321 through a nut on one end of the buffer hole 321 away from the sliding support 22, so that the installation of the hydraulic buffer 211 is completed, and the interval between the support shaft 223 and the hydraulic buffer 211 can be adjusted by adjusting the threaded connection between the nut and the hydraulic buffer 211, so that the adjustment of the preset distance when the tool bit 1 is impacted and moves is realized, and the requirement of absorbing impact force when different workpieces 4 to be processed is satisfied; of course, the hydraulic damper 211 can also be replaced by a threaded connection.

Under the limiting action of the buffer hole 321, the support shaft 223 can only move along the first direction, so that the stability of the cutter head 1 during movement can be maintained.

Note that, the hydraulic buffer 211 in this embodiment is of a type RBQC2508.

Optionally, the telescopic buffer assembly 21 further includes an elastic washer 212, and the elastic washer 212 is sleeved on the support shaft 223 and is disposed between the sliding support 22 and the support base 32.

In this embodiment, as shown in fig. 1 to 3, the telescopic buffer assembly 21 further includes an elastic washer 212 sleeved on the supporting shaft 223, the elastic washer 212 is located between the sliding support 22 and the supporting base 32, when the sliding support 22 moves along the first direction, the elastic washer 212 is compressed, the moving speed of the tool bit 1 is weakened, the impact force is reduced, the compression limit of the elastic washer 212 is the stable position of the tool bit 1 for cutting operation after the impact, at this time, the hydraulic buffer 211 is also in a compressed state, and the supporting base 32 supports the sliding support 22 through the elastic washer 212, so as to ensure the stability of the cutting operation of the tool bit 1.

It should be noted that the elastic washer 212 may be replaced according to maintenance or processing requirements of different workpieces 4 to be processed.

Optionally, the included angle between the main cutting edge 11 of the tool bit 1 and the second direction is 45 degrees, and the second direction is the feeding direction of the tool bit 1 towards the workpiece 4 to be machined.

As shown in fig. 1, the second direction is the Y-axis reverse direction, that is, the cutting feed direction of the cutter head 1.

In this embodiment, as shown in fig. 1 to 3, the included angle between the main cutting edge 11 of the tool bit 1 and the second direction is 45 degrees, that is, the main deflection angle of the tool bit 1 is 45 degrees, and the angle value of the main deflection angle is smaller, so that the length of the main cutting edge in cutting can be effectively increased, and therefore, the heat dissipation is better, the surface residual area of the workpiece 4 to be machined is smaller during cutting, and the service life of the tool bit 1 is prolonged.

In this embodiment, the cutter head 1 is a 45-degree cylindrical turning tool.

Alternatively, the tool bar body 31 includes a mounting bar 311 and a support bar 312 vertically connected, the mounting bar 311 being for mounting on a tool holder, the support bar 312 being disposed in a first direction and connected to the tool bit 1 through the support base 32 and the telescopic buffer structure 2.

In this embodiment, as shown in fig. 1 to 3, a mounting rod 311 and a supporting rod 312 perpendicular to each other are provided to form a cutter bar body 31, wherein the supporting rod 312 is disposed along a first direction, the mounting rod 311 is disposed along a second direction, the mounting rod 311 may be mounted on a cutter holder, and the supporting rod 312 may be connected with the cutter head 1 through a telescopic buffer structure 2, thereby forming a cutter bar body 31 with a T-shaped structure, when the mounting rod 311 is mounted on the cutter holder, one end of the supporting rod 312 facing away from the cutter head 1 may abut against a side wall of the cutter holder, thereby increasing a contact area between the cutter bar body 31 and the cutter holder, and improving a support that the cutter bar body 31 receives when the cutter head 1 performs a cutting operation, thereby improving rigidity of a cutting tool.

In this embodiment, the mounting bar 311 and the support bar 312 are integrally formed, and in other embodiments of the present utility model, the mounting bar 311 and the support bar 312 may be connected by welding.

In another aspect, an embodiment of the present utility model provides a machining apparatus comprising a tool holder and a cutting tool as described above.

As shown in fig. 1 to 3, the technical effects of the processing apparatus in the present embodiment are similar to those of the cutting tool described above, and will not be described again.

The machining device in this embodiment is a lathe, for example.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The cutting tool is characterized by comprising a tool bit (1), a telescopic buffer structure (2) and a tool bar (3), wherein the telescopic buffer structure (2) is arranged on one side of the tool bar (3) towards a to-be-machined piece (4) and is used for stretching along a first direction, the tool bit (1) is arranged on the tool bar (3) through the telescopic buffer structure (2), the tool bit (1) is used for propping against the to-be-machined piece (4), and the tool bar (3) is used for being arranged on a tool holder of machining equipment;

the first direction is the tangential direction of the part to be machined (4) which is propped against the tool bit (1), the tool bit (1) is used for moving along the first direction and compressing the telescopic buffer structure (2), and the telescopic buffer structure (2) is used for driving the tool bit (1) to reset.

2. The cutting tool according to claim 1, wherein the tool holder (3) comprises a tool holder body (31) and a support base (32), the tool holder body (31) is configured to be mounted on the tool holder, the tool holder body (31) is configured to face the end face of the workpiece (4) to be machined as a first end face, the support base (32) and the tool bit (1) are configured to be disposed between the first end face and the workpiece (4) to be machined, the tool bit (1) and the support base (32) are sequentially disposed along the first direction, the support base (32) is fixedly connected with the first end face, the tool bit (1) is connected with the support base (32) through the telescopic buffer structure (2), and the telescopic buffer structure (2) is slidably connected with the first end face along the first direction.

3. The cutting tool according to claim 2, wherein the telescopic buffer structure (2) comprises a telescopic buffer assembly (21) and a sliding support (22), the sliding support (22) is connected with the support base (32) through the telescopic buffer assembly (21), the cutter head (1) is mounted on the sliding support (22), the sliding support (22) is used for being slidably connected with the first end face and for sliding back and forth in the first direction, the cutter head (1) is used for moving through the sliding support (22) and compressing the telescopic buffer assembly (21), and the telescopic buffer assembly (21) is used for driving the cutter head (1) to reset through the sliding support (22).

4. The cutting tool according to claim 2, wherein the first end face is provided with a sliding rail along the first direction, the telescopic buffer structure (2) being slidingly connected with the first end face via the sliding rail.

5. A cutting tool according to claim 3, wherein the sliding support (22) comprises a support plate (221) and a sliding plate (222), the sliding plate (222) being slidably arranged on the first end face in the first direction, the support plate (221) being perpendicularly connected to the sliding plate (222) and to the support base (32) by means of the telescopic buffer assembly (21), the end of the cutter head (1) facing the first end face being connected to the sliding plate (222), the end of the cutter head (1) facing the support base (32) being connected to the support plate (221).

6. A cutting tool according to claim 3, wherein the telescopic buffer assembly (21) comprises a hydraulic buffer (211), a support shaft (223) is arranged at one end of the sliding support (22) towards the support base (32), a buffer hole (321) for the support shaft (223) to penetrate is arranged on the support base (32) along the first direction, the hydraulic buffer (211) is used for penetrating and installing from one end of the buffer hole (321) away from the sliding support (22), the tool bit (1) is used for moving along the buffer hole (321) through the sliding support (22) and the support shaft (223) and compressing the hydraulic buffer (211), and the hydraulic buffer (211) is used for driving the tool bit (1) to reset through the support shaft (223) and the sliding support (22).

7. The cutting tool according to claim 6, wherein the telescopic buffer assembly (21) further comprises an elastic washer (212), the elastic washer (212) is sleeved on the support shaft (223) and is disposed between the sliding support (22) and the support base (32).

8. The cutting tool according to any one of claims 1-7, wherein the angle of the main cutting edge (11) of the cutting head (1) is 45 degrees to a second direction, the second direction being the feed direction of the cutting head (1) towards the work piece (4) to be machined.

9. The cutting tool according to any one of claims 2-7, wherein the tool holder body (31) comprises a mounting bar (311) and a support bar (312) connected vertically, the mounting bar (311) being for mounting on the tool holder, the support bar (312) being arranged in the first direction and being connected to the tool head (1) by means of the support base (32) and the telescopic relief structure (2).

10. A machining apparatus comprising a tool holder and a cutting tool according to any one of claims 1 to 9.