CN218427122U - Machine tool with expandable cutter - Google Patents

Abstract

The utility model relates to a lathe field, more specifically relates to a lathe that cutter can expand, including the installation frame, former blade disc, dilatation blade disc, transfer ware and adjusting device, adjusting device's fixed part and installation frame location, adjusting device's movable part and fixed part cooperation are with the motion of part relatively fixed, and the movable part passes through to pass power piece and connects the conveyer extending structure, and the motion of movable part can form the displacement effort to extending structure through passing power piece, and this displacement effort is used for driving extending structure and send the planar direction displacement of sword path place orbit along the perpendicular to conveyer. The utility model discloses side direction at former blade disc sets up the dilatation blade disc, satisfies the demand transformation of old machine to bigger capacity tool magazine, through adjusting extending structure, snatch a perpendicular distance for between the installation rack, guarantees to grab the position accuracy that a send the sword when sending sword path motion, lowers assembly, the manufacturing accuracy requirement of dilatation tool magazine self.

Description

Machine tool with expandable cutter

Technical Field

The utility model belongs to the lathe field, more specifically say, relate to a lathe of cutter head formula structure.

Background

The tool magazine system is a device for providing tool storage and tool changing requirements required in an automatic machining process. The automatic tool changing mechanism changes the tool changing mode of the traditional processing equipment mainly taking people as a main tool by storing a tool magazine of a plurality of tools, can meet the requirements of different processing forms on the tools, such as milling, drilling, tapping, boring, tapping and the like, greatly shortens the processing time and reduces the production cost by means of the control of a computer program, and is the greatest characteristic of a tool magazine system, but the current tool magazine has the following problems: when the capacity of the existing tool magazine is not enough to complete the required machining process, the cost for directly replacing the original tool magazine and the tool magazine bracket is too high, and the waste of the existing tool magazine is easily caused.

If the cutter is supplemented through the external tool magazine, the problem of insufficient reliability of the cutter supplementing process is faced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a but lathe of cutter dilatation through increase external tool magazine on the basis of former tool magazine, comes for former tool magazine supplementary cutter to can adjust the position of external tool magazine, guarantee the reliability that the cutter supplyed.

This lathe that cutter can expand includes:

installing a frame;

the original cutter head is rotationally arranged on the mounting rack, a plurality of first clamping pieces for clamping the cutter are annularly arranged on the original cutter head, and the rotation of the original cutter head can drive each first clamping piece to sequentially pass through the cutter receiving position;

the expansion cutter disc is rotatably arranged on the mounting rack and is positioned in the lateral direction of the original cutter disc, a plurality of second clamping pieces for clamping cutters in the expansion cutter disc are annularly arranged on the expansion cutter disc, and the rotation of the expansion cutter disc can drive each second clamping piece to sequentially pass through the cutter conveying position;

the moving device comprises a telescopic structure and a grabbing part, the telescopic structure is positioned with the mounting rack, the grabbing part is used for grabbing or releasing the cutter, the telescopic structure is used for driving the grabbing part to move along a cutter feeding path, and the cutter feeding path points to a cutter receiving position through the cutter feeding position;

the adjusting device comprises a fixed part and a movable part, the fixed part is positioned with the installation rack, the movable part is matched with the fixed part to move relative to the fixed part, the movable part is connected with the telescopic structure through a force transmission part, the movement of the movable part can form a displacement acting force on the telescopic structure through the force transmission part, and the displacement acting force is used for driving the telescopic structure to displace along the direction perpendicular to the track plane where the cutter conveying path is located.

Further preferably, the displacement acting force is perpendicular to the track plane of the cutter feeding path.

Further preferably, the force transmission piece comprises a base, the telescopic structure is fixed on the base, a stress part connected with the movable part is arranged on the base, the mounting rack comprises a mounting base surface, and the base is attached to the mounting base surface and supported by the mounting base surface.

Preferably, the installation base surface is provided with a guide part, the base is provided with a guide body, the guide body is matched with the guide part, and the extending direction of the guide part is consistent with the direction of the displacement force

Further preferably, the line of action of the displacement force passes through the guide body, or an orthographic projection of the line of action of the displacement force on the mounting base surface falls on the guide portion.

Further preferably, the guide portion is a long groove recessed on the mounting base surface, and the guide body is a protrusion slidably disposed in the long groove.

Further preferably, the guide part is a long groove recessed on the mounting base surface, and the guide body is a guide block embedded in the surface groove body in a clamping manner.

Further preferably, the base is provided with a stressed portion, and the movable part is connected with the stressed portion to apply pushing force or pulling force to the stressed portion respectively.

Further preferably, the movable part comprises an adjusting bolt arranged parallel to the mounting base surface, the stress part is a screw hole formed in the end part of the base, and the adjusting bolt and the screw hole are matched to form a screw rod nut structure.

Preferably, the base is provided with two bearing parts, the two bearing parts are respectively located at two opposite positions of the base, the adjusting device comprises two fixed parts and two movable parts, the two movable parts are respectively connected with one bearing part, and the bearing parts respectively apply pushing force in directions to the base.

The utility model discloses a technical scheme has following advantage or one of beneficial effect at least among the above-mentioned technical scheme: the utility model discloses side direction at former blade disc sets up the dilatation blade disc, the cutter that the piece will be expanded on the blade disc is supplied to former blade disc to the utilization, greatly reduced changes the tool magazine cost, satisfy the demand transformation of old machine to bigger capacity tool magazine, in addition, through adjusting extending structure, snatch for the perpendicular distance between the installation frame, when avoiding the dilatation tool magazine assembly, snatch the interference of piece after stretching out and former tool magazine, it is accurate to guarantee to grab the position that the piece sent the sword when sending sword path motion, reduce the assembly of dilatation tool magazine self, the manufacturing accuracy requirement.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

FIG. 1 is a schematic view of the initial position of the knife feeding device of the present invention;

FIG. 2 is a schematic view of the present invention;

FIG. 3 is a schematic view of the connecting knife of the present invention in another direction;

FIG. 4 is a schematic view of the knife-joining state of the present invention;

FIG. 5 is a schematic view of an adjustment device;

fig. 6 is a schematic view of the adjustment device in cooperation with the base.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.

The following disclosure provides many different embodiments or examples for implementing different aspects of the invention.

The embodiment discloses a machine tool, which comprises a mounting rack 100 and an original tool magazine.

As shown in fig. 1 to 6, the mounting frame 100 is used for positioning with the bed of a numerically controlled machine tool, for example, the mounting frame 100 comprises a mounting arm fixed to a column fixed to the bed. The original tool magazine is arranged at the front end of the mounting arm. The original tool magazine comprises an original cutter head 1 which can be driven to rotate around the axis of the original cutter head, a plurality of first clamping pieces 11 used for clamping the tools are annularly arranged on the periphery of the original cutter head 1, the rotation of the original cutter head 1 can drive the first clamping pieces 11 to sequentially pass through the tool changing positions, and a main shaft of the numerical control machine carries out tool changing operation on the tools in the tool changing positions. In addition, the original tool magazine is provided with a tool receiving position 200, the rotation of the original cutter head 1 can drive each first clamping piece 11 to pass through the tool receiving position 200 in sequence, and the tool receiving position 200 and the tool changing position are separated from each other by a plurality of first clamping pieces 11.

The numerical control machine further comprises a capacity expansion tool magazine, wherein the capacity expansion tool magazine is connected with the installation rack 100 and is located in the lateral direction of the original tool magazine and the original cutter head. The expansion tool magazine is used for supplying tools for the original tool magazine to make up for the defect of insufficient tools in the original tool magazine. The capacity expansion tool magazine comprises a capacity expansion cutter head 2 and a conveyor. The capacity expansion cutter head 2 comprises a plurality of second clamping pieces 21 which can be driven to rotate around the axis of the capacity expansion cutter head 2, the periphery of the capacity expansion cutter head 2 is annularly provided with a plurality of second clamping pieces 21 used for clamping the cutters in the capacity expansion cutter head 2, the capacity expansion tool magazine is provided with a cutter feeding position 300, and the rotation of the capacity expansion cutter head 2 can drive the cutters of the second clamping pieces 21 to sequentially pass through the cutter feeding position 300. A tool transfer channel is formed between the tool feeding position 300 and the tool receiving position 200. It is easy to understand that the rotation axis of the expansion cutter head 2 is not coincident with the rotation axis of the original cutter head 1.

The transfer device is designed to be separated from the capacity expansion cutter head 2, and the capacity expansion cutter head 2 rotates relative to the transfer device. The diverter comprises a telescopic structure 3 and a gripping element 4, which gripping element 4 is used to grip or release a knife 400. The telescopic structure 3 is used for driving the grabbing part 4 to move along the tool feeding path so as to complete the exchange of the tools in the expansion tool magazine and the tools in the original tool magazine in the transfer channel. For example, in the present embodiment, the telescopic structure 3 drives the grabbing member 4 to move, so that the grabbing member 4 grabs the tool from the second catching member 21 of the tool feeding station 300 and transfers the tool to the first catching member 11 of the tool receiving station 200. The cutter feeding path is a straight path and is on a track plane, and the cutter feeding path at least comprises an initial position, a first position and a second position. As shown in fig. 2, the initial position is the position where the telescopic mechanism is not extended initially, and at this time, the grabbing member 4 and each of the second holding members 21 are staggered, so that the grabbing member does not interfere with the expansion cutter 2 in rotation; the first position is opposite to the cutter feeding position 300, the grabbing part 4 at the first position grabs the cutter on the cutter feeding position 300 and moves to the second position, and in the process, the cutter overcomes the self elasticity of the second clamping part 21 and is separated from the second clamping part 21 to enter a transfer channel; as shown in fig. 3, the second position is opposite to the tool receiving position 200, when the grabbing member 4 reaches the second position, the tool grabbed by the second clamping member 21 on the grabbing member leaves the transfer passage and just falls into the first clamping member 11 of the tool receiving position 200, and in the process, the tool overcomes the self-elastic force of the first clamping member 11 and enters the first clamping member 11; the gripper 4 then releases the knife and returns to the initial position in the reverse direction of the knife feed path.

When the tool feeding position 300 carries a tool and the tool receiving position 200 carries a tool, the tool axis of the tool feeding position 300 and the tool axis of the tool receiving position 200 are parallel to each other, so that no additional angle adjustment is needed when the tool is transferred from the tool feeding position 300 to the tool receiving position 200 or from the tool receiving position 200 to the tool feeding position 300, the tool is switched more accurately, and the structures of the telescopic structure 3 and the grabbing piece 4 are simplified.

In addition, the cutter axis at the first position is coincident with the cutter axis at the cutter feeding position 300, the cutter axis at the second position is coincident with the cutter axis at the cutter receiving position 200, when the grabbing piece 4 takes a cutter from the cutter feeding position 300 at the first position, the cutter cannot form angular deviation, when the grabbing piece 4 feeds the cutter to the cutter receiving position 200 at the second position, the cutter cannot form angular deviation, and the cutter switching reliability is ensured.

The path plane of the cutter feeding path is perpendicular to and intersects with the cutter axis of the cutter feeding position 300, and the path plane of the cutter feeding path is perpendicular to and intersects with the cutter axis of the cutter receiving position 200.

The assembly error is formed after the expandable tool magazine is assembled on the mounting rack 100, the mounting error and the machining error are formed on each second clamping piece 21 of the expandable tool magazine, the mounting error and the machining error can also exist on the first clamping piece 11 of the original tool magazine, and the risk of collision between the grabbing piece 4 and the shield of the original tool magazine and the first clamping piece 11 exists in the process that the grabbing piece extends out from the first position to the second position; or, in the transferring process, the grasped tool has a risk that the tool cannot be accurately clamped into the first clamping part 11; in addition, vibration generated in the movement process of the machine tool can also cause looseness of the expanded tool magazine, so that the expanded tool magazine deviates from the original position, and the risk of collision between the grabbing part 4 and the first clamping part 11 also exists.

For this purpose, the machine tool of this embodiment is further provided with an adjustment device, which, with reference to fig. 5 and 6 in combination, comprises at least one fixed part 5 and at least one movable part 6 cooperating with the fixed part 5, the fixed part 5 being positioned on the mounting frame 100, the movable part 6 being able to move with respect to the fixed part 5. The movable part 6 is typically an operating member for enabling a user to manually operate. The movable part 6 is connected with the expansion tool magazine, and the movement of the movable part can apply displacement acting force to the expansion tool magazine so as to adjust the positions of the expansion tool magazine and the transfer piece relative to the installation rack 100. Particularly, the capacity expansion tool magazine further comprises a force transmission piece, the movable part 6 is connected with the telescopic structure 3 through the force transmission piece, the movable part 6 moves to form displacement acting force on the telescopic structure through the force transmission piece, and the displacement acting force is used for driving the telescopic structure to displace along the direction perpendicular to the track plane where the tool feeding path is located. In an embodiment, the telescopic structure and the expandable tool magazine move simultaneously.

Certainly, the expansion tool magazine and the installation rack 100 are locked by a locking structure, and after the expansion tool magazine is unlocked, the expansion tool magazine can translate on the surface of the installation rack 100 to drive the telescopic structure to translate relative to the installation rack. As shown in fig. 4, the direction of the displacement acting force F is perpendicular to the dashed line L, that is, perpendicular to the plane of the trajectory where the tool feeding path is located, so that the expansion tool magazine can translate along the trajectory perpendicular to the tool feeding path after being unlocked, and the translation of the expansion tool magazine drives the telescopic structure 3 and the grabbing member 4 to move in the same direction. Namely, the vertical distance between the telescopic structure 3 and the grabbing part 4 relative to the installation rack 100 is adjusted through the movable part 6, so that the grabbing part 4 is prevented from interfering with the original tool magazine after extending out during expansion tool magazine assembly; after the dilatation tool magazine is initially installed, the distance between the dilatation tool magazine and the installation rack 100 can be adjusted to control the alignment of the tool feeding position 300 and the tool receiving position 200, so that the position of the grabbing part 4 for feeding the tool during the movement of the tool feeding path is accurate, and the requirements on the assembling and manufacturing precision of the dilatation tool magazine are reduced.

Moreover, after long-term use, the position error of the expansion tool magazine caused by vibration is overcome by adjusting the vertical distance between the telescopic structure and the grabbing piece 4 relative to the installation rack 100.

As shown in fig. 5 and 6, the expandable magazine includes a base 7, and the base 7 is used as a part or all of the force transmission member. Dilatation blade disc 2 rotates and sets up in base 7 periphery, and extending structure 3's stiff end is fixed on base 7, and the translation of base 7 can drive dilatation tool magazine, the removal jointly. The mounting frame 100 comprises a hanging plate 101, the hanging plate 101 is fixed on the mounting arm, the hanging plate 101 has a mounting base surface 102, and the base 7 is attached to the mounting base surface 102 and supported by the mounting base surface 102. The locking structure comprises a plurality of bolts which pass through the base 7 and the hanging plate 101 to press the base 7 against the mounting base surface 102. One of the hanging plate 101 and the base 7 is provided with an oblong hole 7 for a bolt to pass through, and the length direction of the oblong hole 7 is parallel to the direction of the displacement acting force F of the movable part 6. The base 7 is provided with a force receiving part 72 connected with the movable part 6, when the position of the expanding tool magazine is adjusted by using the adjusting device, the bolt is loosened appropriately, the supporting state of the mounting base surface 102 on the base 7 is kept, the movable part 6 applies displacement acting force F to the force receiving part 72, the bolt and the oblong hole 7 move relatively in the length direction of the oblong hole 7, and therefore the base 7 slides relative to the mounting base surface 102.

In some preferred embodiments, the mounting base surface 102 is provided with a guide portion, and the base 7 is provided with a guide body, which cooperates with the guide portion to enable the base 7 to move along the direction of the guide portion. It is easy to understand that the direction of the guide portion is aligned with the direction of the above-described displacement force. Through setting up guide body and guide part, the base 7 is more accurate for the sliding direction of installation base face 102, and the position adjustment of snatching 4 for former tool magazine is also more convenient, accurate.

In some preferred embodiments, the line of action of the displacement force passes through the guide body, or the orthographic projection of the line of action of the displacement force on the mounting base surface 102 falls on the guide portion. In this way, the force of the adjusting device on the base 7 does not create a moment on the guide that biases it away from the guide, and therefore adjustment of the base 7 is made easier. It is easy to understand that the above-mentioned moment will aggravate the friction of the guiding body and the guiding portion, which affects the accuracy of the position adjustment, and because the friction is increased, the pushing force and the pulling force need to be increased, which increases the difficulty of the adjustment.

The guide portion is a long groove 103 recessed in the mounting base surface 102, the guide body is a protrusion, not shown, slidably provided in the long groove 103, and the extending direction of the long groove 103 is parallel to the direction of the displacement force. The orthographic projection of the line of action of the above-described displacement force on the mounting base surface 102 falls on the center line of the long groove 103. The guide of the long groove 103 to the protrusion is mainly realized by utilizing the sliding fit between the two side walls, and a suspension-shaped gap is formed between the bottom surface of the long groove 103 and the bottom surface of the protrusion, so that friction is avoided, and the adjustment is more convenient.

In the process of position adjustment, the guide body and the guide part are stress concentration positions and are easy to break under stress. In some preferred embodiments, the guide body is a guide block which is embedded in the surface of the base 7 in a clamping manner, the guide block is clamped in a groove body on the surface of the base 7 and is positioned in the groove body, and the guide block only has the freedom degree away from the groove body perpendicular to the bottom surface of the groove body in the groove body. The guide block is slidably disposed on the long groove 103. In this design, the detachable guide block is faster after damage, which is equivalent to improving the overall life of the base 7.

In other embodiments, not shown, the guide portion is a projection projecting from the mounting base surface, and the guide body is a groove.

In some preferred embodiments, the displacement force is a pushing force and a pulling force applied to the same position of the base 7, and the structure can be simplified by applying the displacement force at the same position. Specifically, the fixing part 5 is a fixing seat, which is fixed on the mounting base surface 102 at a distance from the base 7, and the grabbing part 4 is located on a side of the base 7 away from the fixing seat. A through hole is arranged in the fixed seat along the direction parallel to the mounting base surface 102, and the movable part 6 is an adjusting bolt arranged in the through hole in a penetrating way; the stress part 72 is a screw hole arranged at the end part of the base 7, and the thread part of the adjusting bolt is in threaded connection with the screw hole; the adjusting bolt and the base 7 form a structure similar to a screw nut, and the pulling force on the base 7 is formed by positively rotating the bolt, so that the distance between the base 7 and the fixed seat is reduced, and the distance between the grabbing piece 4 and the mounting rack 100 is reduced; thrust to the base 7 is formed by reversing the bolt, and the distance between the base 7 and the fixed seat is increased, so that the distance between the grabbing piece 4 and the bracket of the installation rack 100 is increased. In the embodiment, the adjusting device formed by the screw nut structure is adopted to form a continuously adjustable position, so that the adjusting precision is improved, and the reliability of cutter feeding and cutter supplementing is ensured.

In an embodiment not shown, the adjustment device comprises two fixed parts and two movable parts, which are respectively connected to two opposite positions of the base 7, for respectively applying opposite thrusts to the base 7 to adjust the position between the base 7 and the support of the mounting frame 100. For example, one of the fixed components is a seat body provided with a screw hole, the corresponding movable component is a screw rod in threaded fit with the screw hole, the screw rod abuts against the end surface of the base 7, and the base 7 is pushed by rotating the screw rod; or the other side of the base 7 is pushed by a screw corresponding to the other fixing part 5.

As shown in fig. 3, the telescopic structure 3 includes a linear motor 31 and a first cylinder 32, the housing of the linear motor 31 is positioned opposite to the base 7, the first cylinder 32 is connected to the output end of the linear motor 31, and the output directions of the linear motor 31 and the first cylinder 32 are the same and point to the tool catching position 200. The gripping member 4 comprises a second cylinder 41 and the gripping jaws, the second cylinder 41 being used to control the gripping and releasing of the gripping jaws, the second cylinder 41 being connected to the output of the first cylinder 32. The linear motor 31 is provided with a displacement sensor for controlling the amount of extension thereof.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A tool-expandable machine tool, comprising:

installing a frame;

the original cutter head is rotationally arranged on the mounting rack, a plurality of first clamping pieces for clamping the cutter are annularly arranged on the original cutter head, and the rotation of the original cutter head can drive each first clamping piece to sequentially pass through the cutter receiving position;

the expansion cutter disc is rotatably arranged on the mounting rack and is positioned in the lateral direction of the original cutter disc, a plurality of second clamping pieces for clamping cutters in the expansion cutter disc are annularly arranged on the expansion cutter disc, and the rotation of the expansion cutter disc can drive each second clamping piece to sequentially pass through the cutter conveying position;

the moving device comprises a telescopic structure and a grabbing part, the telescopic structure is positioned with the mounting rack, the grabbing part is used for grabbing or releasing the cutter, the telescopic structure is used for driving the grabbing part to move along a cutter feeding path, and the cutter feeding path points to a cutter receiving position through the cutter feeding position;

the adjusting device comprises a fixed part and a movable part, the fixed part is positioned with the installation rack, the movable part is matched with the fixed part to move relative to the fixed part, the movable part is connected with the telescopic structure through a force transmission part, the movement of the movable part can form a displacement acting force on the telescopic structure through the force transmission part, and the displacement acting force is used for driving the telescopic structure to displace along the direction perpendicular to the track plane where the cutter conveying path is located.

2. The tool-expandable machine tool of claim 1, wherein: the displacement acting force is vertical to the track plane of the cutter feeding path.

3. The tool expandable machine tool according to claim 1 or 2, wherein: the force transmission piece comprises a base, the telescopic structure is fixed on the base, a stress part connected with the movable part is arranged on the base, the mounting rack comprises a mounting base surface, and the base is attached to the mounting base surface and supported by the mounting base surface.

4. The tool-expandable machine tool according to claim 3, characterized in that: the installation base surface is provided with a guide part, the base is provided with a guide body, the guide body is matched with the guide part, and the extension setting direction of the guide part is consistent with the direction of the displacement acting force.

5. The tool-expandable machine tool of claim 4, wherein: the action line of the displacement action force penetrates through the guide body, or the orthographic projection of the action line of the displacement action force on the installation base plane falls on the guide part.

6. The tool-expandable machine tool according to claim 5, wherein: the guide part is a long concave groove sunken on the installation base surface, and the guide body is a bulge arranged in the long concave groove in a sliding mode.

7. The tool-expandable machine tool according to claim 5, wherein: the guide part is a long concave groove sunken on the installation base surface, and the guide body is a guide block embedded in the surface groove body.

8. The tool-expandable machine tool according to claim 3, characterized in that: the base is provided with a stress part, and the movable part is connected with the stress part to respectively apply pushing force or pulling force to the stress part.

9. The tool-expandable machine tool of claim 8, wherein: the movable component comprises an adjusting bolt arranged parallel to the mounting base surface, the stress part is a screw hole formed in the end part of the base, and the adjusting bolt is matched with the screw hole to form a screw rod nut structure.

10. The tool-expandable machine tool according to claim 3, characterized in that: the adjusting device comprises two fixed parts and two movable parts, the two movable parts are respectively connected with the stress parts, and the base is respectively applied with a pushing force in the direction.

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