A dual mode multi-tool machine tool

Abstract

The application discloses a dual-mode multi-cutter processing machine tool, which comprises a machine table, a moving device, an electric spindle and a fixed part installed on the machine table; the electric spindle is provided with a brake function for fixing an output shaft when the electric spindle is instantaneously stopped from rotating and is at rest; an output end of the electric spindle is used for installing a clamp; the fixed part is opposite to the output end of the electric spindle; the clamp or the clamp cooperates with the fixed part to form a processing position; a rotating cutter tower is installed on a moving end of the moving device; a plurality of installation positions are arranged on the rotating cutter tower and are used for installing fixed cutter extension pieces and movable cutter extension pieces; a plurality of driving assemblies which are independent of each other and correspond to the installation positions are installed in the rotating cutter tower; the number of the driving assemblies is less than that of the installation positions; the driving assemblies are used for providing power to the movable cutter extension pieces; the position fixing of a workpiece is realized through the brake function of the driving assemblies, a basis for subsequent movable cutter processing is provided, and no additional structure is needed; in addition, the driving assemblies are innovatively arranged on the rotating cutter tower to provide power to the movable cutter extension pieces, the functions of the fixed cutter and the movable cutter are realized, the function of the machine tool is more abundant, and the workpiece position needs not to be shifted for secondary processing, and the processing efficiency can be effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of automated machine tool technology, specifically a dual-mode multi-tool machining machine tool. Background Technology

[0002] The power turret is an important component of high-precision CNC machine tools. It is generally equipped with various cutting tools such as turning, milling, and drilling tools. The turret can be rotated to quickly switch between different tools. For example, the publicly available technical document "CN204975385U, Two-tooth dual servo motor power turret" shows that several tools can be pre-installed on the turret, and the required tool can be switched by rotating the turret according to the machining situation.

[0003] However, the tools currently located on the turret are all fixed tools, meaning that these tools do not move. The milling operation on the workpiece is mainly achieved by rotating the workpiece to change its position. If the workpiece needs to be machined for hole forming, slotting, or other operations, it needs to be transferred to another machine tool and the operation needs to be reprogrammed. The preparation steps before machining are numerous and the operation is cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-mode multi-tool machining tool to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A dual-mode multi-tool machining tool includes a machine base, on which a moving device, an electric spindle, and a fixed part are mounted;

[0007] The electric spindle has a braking function, which stops its rotation instantly and is used to fix the output shaft when it is stationary. The output end of the electric spindle is used to install a fixture. The fixing part is directly opposite the output end of the electric spindle. The fixture or the fixture and the fixing part cooperate to form a machining position.

[0008] The mobile end of the mobile device is equipped with a rotating turret. The rotating turret has several mounting positions for mounting fixed tool extensions and moving tool extensions. The rotating turret is equipped with several independent drive components that correspond to the mounting positions. The number of drive components is less than the number of mounting positions. The drive components are used to provide power to the moving tool extensions.

[0009] In a further technical solution, the drive assembly includes a drive motor, which is mounted on the inner side of the rotating turret via a mounting component, and its output shaft extends into the mounting position and is connected to a gear.

[0010] The moving tool extension is installed on the outside of the rotating turret, and has an input end that extends into the mounting position. The input end is provided with a gear ring that meshes with a gear.

[0011] In a further technical solution, the gear is a helical bevel gear, and the gear ring is adapted to it.

[0012] In a further technical solution, the fixing part includes a base, an adjusting seat is slidably connected to the base, a locking structure is provided between the base and the adjusting seat, and a top contact is provided on the adjusting seat.

[0013] In a further technical solution, the electric spindle includes a spindle motor and a brake cylinder;

[0014] Both ends of the output shaft of the main spindle motor extend outward. A brake disc is fixed at one end of the output shaft. The brake disc has a "V"-shaped brake groove on its outer periphery. A chuck is provided at the other end of the output shaft.

[0015] The output end of the brake cylinder is provided with a pressure rod, and the end of the pressure rod is adapted to the shape of the brake groove.

[0016] In a further technical solution, the brake cylinder is mounted on the main shaft motor via an extension plate.

[0017] In a further technical solution, the spindle motor includes a hollow rotor and a push rod passing through the rotor. A clamp is installed at one end of the rotor, and a disassembly and assembly device is installed at the other end. The disassembly and assembly device extends into the rotor and connects with the push rod, and one end of the push rod can abut against the clamp.

[0018] In a further technical solution, the disassembly and assembly device includes a locking component and a fixing component, both sleeved on the ends of the rotor;

[0019] The locking assembly includes a hemispherical movable block sleeved on the rotor. The movable block is rotatably engaged with a movable plate. One end of the movable plate is rotatably connected to a fixing member, and the other end is rotatably connected to the output end of the locking cylinder through a connecting member.

[0020] The fixing component includes a fixing sleeve fixed on the rotor, a plurality of grippers are rotatably connected to the fixing sleeve, and a reset spring is provided between the fixing sleeve and the grippers. One end of the gripper can abut against the movable block, and the other end can extend into the rotor and abut against the end of the push rod.

[0021] The beneficial effects of this invention are:

[0022] In this invention, the workpiece position is fixed by the built-in braking function, providing a foundation for subsequent moving tool machining without the need for additional structures. In addition, this invention innovatively sets a drive component on the rotating turret to provide power to the moving tool extension, realizing both fixed and moving tool functions, making the machine tool more versatile, and eliminating the need to move the workpiece for secondary machining, which can effectively improve machining efficiency.

[0023] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0024] Figure 1 : A three-dimensional structural diagram of the present invention.

[0025] Figure 2 : A structural diagram of the cutter head of the present invention.

[0026] Figure 3 : Internal structure diagram of the cutter head of the present invention.

[0027] Figure 4 : Disassembly diagram of the drive assembly and moving blade extension of the present invention.

[0028] Figure 5 : Structural diagram of the fixing part of the present invention.

[0029] Figure 6 The electric spindle structure of the present invention Figure 1 .

[0030] Figure 7 The electric spindle structure of the present invention Figure 2 .

[0031] Figure 8 The electric spindle structure of the present invention Figure 3 .

[0032] Reference numerals: 1-Machine base, 2-Moving device, 3-Electric spindle, 31-Spindle motor, 311-Rotor, 312-Push rod, 313-Through hole, 313-Disassembly / assembly device, 3131-Moving block, 3132-Moving plate, 3133-Locking cylinder, 3134-Bearing, 3141-Fixed sleeve, 3142-Clamping jaw, 32-Brake cylinder, 33-Brake disc, 34-Brake groove, 35-Chuck, 36-Pressure rod, 37-Extension plate, 4-Fixed part, 41-Base, 42-Adjusting seat, 43-Top contact part, 5-Rotating turret, 51-Drive part, 52-Cutter disc, 53-Mounting position, 54-Drive assembly, 541-Drive motor, 542-Mounting part, 543-Gear, 61-Fixed tool extension, 62-Moving tool extension, 621-Input end, 622-Gear ring. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Please refer to Figure 1-8 ;

[0035] The machine tool of this invention also has a turret for tool switching to achieve different processing functions on the workpiece. It also has two processing modes: a conventional workpiece rotation and tool-fixed cutting mode, and a mode where the workpiece is fixed while the tool rotates to achieve machining requirements such as hole drilling and grooving. The specific structure includes a machine base 1, on which a moving device 2, an electric spindle 3, and a fixed part 4 are mounted. A rotating turret 5 is mounted on the moving end of the moving device 2. The rotating turret 5 has several mounting positions 53 for mounting fixed tool extensions 61 and moving tool extensions 62. Several independent drive components 54, corresponding to the mounting positions 53, are installed inside the rotating turret 5. The number of drive components 54 is less than the number of mounting positions 53. The drive components 54 provide power to the moving tool extensions 62. Assuming there are six mounting positions 53, the number of drive components 54 is less than six, and can be two. These two drive components 54 can be controlled to start and stop independently.

[0036] In this embodiment, there is no limitation on the mounting position 53 of the fixed tool extension 61, that is, it can be installed at any mounting position 53. However, the moving tool extension 62 needs to be installed in the mounting position 53 corresponding to the drive component 54. The drive component 54 located in the rotary turret 5 can be triggered by the controller as needed. For example, if the workpiece only needs to be milled, there is no need for the drive component 54 to move, only the fixed tool needs to be used. In this case, the fixed tool extension 61 can be installed at any mounting position 53.

[0037] In addition, depending on the shape of the workpiece, it is determined whether the fixing part 4 is needed to form a machining position. One end of the electric spindle 3 is used to install a fixture. For example, if the workpiece is relatively short and has a large volume, the workpiece can be clamped and fixed by the fixture alone. If the workpiece is relatively long, one end is clamped and fixed by the fixture, and the other end is engaged with the fixing part 4 to achieve double-head fixation of the workpiece, so that it will not deform during processing.

[0038] Based on one of the above-mentioned components, in this usage mode, the workpiece only needs to be milled. Therefore, before starting work, the workpiece is fixed in the machining position, and the fixed tool extension 61 to be used is installed on the rotary turret 5. Then, the electric spindle 3 drives the workpiece to rotate, and at the same time, the rotary turret 5 selects and switches the fixed tool to be used according to the program. The moving device 2 drives the rotary turret 5 to move, so that the fixed tool contacts the workpiece to realize the milling operation. In this embodiment, the electric spindle 3 has a braking function. In case of emergency, the electric spindle 3 can brake suddenly to stop the workpiece from rotating instantly, avoiding further damage to the workpiece or the danger of it flying out. This is a conventional machining method.

[0039] Based on another usage of the above components, the electric spindle 3 in this usage also has a braking function. The main action of the electric spindle 3 is achieved by the cooperation of the stator assembly and the rotor 311 assembly (output shaft). Its principle is the same as that of an electric motor. Without fixing the rotor 311 assembly, applying an external force to it will cause the rotor 311 assembly to rotate. This makes it impossible to fix the position of the workpiece. Therefore, in this embodiment, the braking function of the electric spindle 3 is used to fix the rotor 311 assembly to prevent the rotor 311 assembly from rotating during processing.

[0040] The braking function in this embodiment consists of a separate braking module, which can operate independently. When the electric spindle 3 is not working, the braking module fixes the rotor 311 assembly so that it cannot rotate even when subjected to external force.

[0041] In addition, a moving tool frame module and a fixed tool extension module are installed on the rotating turret 5 respectively. The moving tool extension 62 is connected to the drive assembly 54. The action sequence of the moving tool and the fixed tool depends on the actual situation. The following is an explanation of only one method.

[0042] During operation, when the workpiece needs to be milled, the electric spindle 3 drives the workpiece to rotate. At this time, the rotary turret 5 selects a fixed tool to process the workpiece. When the workpiece needs to be drilled or grooved, the electric spindle 3 will position the current position of the workpiece so that the side of the workpiece to be processed faces the rotary turret 5. Specifically, the positioning rotation angle can be achieved by an encoder, similar to the positioning method of a servo motor. If some workpieces are cylindrical, no positioning is required because each side is the same. After the electric spindle 3 stops rotating, the brake module fixes the current position of the output shaft so that it cannot rotate. Then, the rotary turret 5 rotates to select the moving tool extension 62 so that it corresponds with the workpiece. Then, the drive assembly 54 drives the moving tool extension 62 to rotate, so that the moving tool rotates to drill the side of the workpiece.

[0043] In the prior art, a brake module is usually set on the electric spindle 3, but it only has a braking function. In this invention, the workpiece position is fixed by the built-in braking function, which provides a basis for subsequent moving tool processing without the need for additional structures.

[0044] In addition, the present invention innovatively sets a drive component 54 on the rotary turret 5 to provide power to the moving tool extension 62, realizing both fixed tool and moving tool functions, making the machine tool more functional, and eliminating the need to move the workpiece position for secondary processing, which can effectively improve processing efficiency.

[0045] In this embodiment of the invention, the structure of the rotating turret 5 can refer to the publicly available technical document "CN108746687A, a high-stability power turret". The power source for driving the moving tool extension 62 is an external motor. According to the description in paragraph 0037 of its specification, "a radial transmission shaft that drives the rotating tool holder to rotate is arranged in the radial direction inside the tool disc 52. The radial transmission shaft and the axial transmission shaft are connected by a helical gear 543". Using this method will make the equipment very large. Moreover, when several rotating tool holders are provided, as long as the axial transmission shaft rotates, all the rotating tool holders will rotate synchronously.

[0046] Compared to the later invention, which eliminated the external power supply method, the drive components 54 used are all set and controlled separately, making maintenance more convenient. If one drive component 54 fails, there are others that can be used as replacements, so production will not be delayed. Moreover, the built-in design makes the overall size lighter. All mounting positions 53 can be used to install fixed tool extension modules without restriction. The moving tool is installed when needed, making the machine tool more flexible to use.

[0047] One embodiment of the present invention regarding the drive assembly 54 specifically includes a drive motor 541. Preferably, the drive motor 541 is a small-sized high-speed motor used in conjunction with a reducer. In this embodiment, the rotating turret 5 includes a drive rotation part and a cutter head 52 part on which the cutter is mounted. The cutter head 52 part is circular. The drive part 51 is mainly connected to the outer side of the cutter head 52, and only needs to be able to drive it to rotate. A space for mounting the drive motor 541 is provided inside the turntable. The drive motor 541 is mounted on the inner side of the rotating turret 5 via a mounting member 542. The output end extends into the mounting position 53 and is connected to the gear 543; preferably, the mounting position 53 has a mounting hole corresponding to the position of the drive motor 541, and the output end of the drive motor 541 extends into the mounting hole; the moving tool extension 62 is installed on the outside of the rotating turret 5, and has an input end 621 extending into the mounting position 53, and the input end 621 is provided with a gear ring 622, which meshes with the gear 543; it should be noted that there are several meshing gears inside the moving tool extension 62, one end of the output end is connected to the internal gear, and the other end is provided with a gear ring 622;

[0048] The mounting position 53 located on the outside of the cutter head 52 is basically the same. When the moving tool extension 62 needs to be installed, the output end is inserted into the mounting hole so that the gear ring 622 meshes with the gear 543. Then the housing is connected to the cutter head 52 by screws or other means. When the drive component 54 is activated, it will drive the gear 543. The gear ring 622, the output end and the gear assembly located inside will rotate accordingly, thereby realizing the rotation of the external tool.

[0049] Preferably, gear 543 is a bevel gear 543 with the teeth on gear 543 set at an angle. The gear ring 622 is adapted to it, that is, the gear ring 622 has the same profile as the bevel gear 543, so that the bevel gear 543 is embedded in it. In addition, this design can ensure that gear 543 and gear ring 622 can mesh together every time they are installed, without the need to adjust the position of gear ring 622.

[0050] To further explain, since the cutter head 52 is equipped with a drive component 54, and the drive component 54 must have a wire connection, the cutter head 52 will not rotate indefinitely, but will reciprocate at a certain angle to select the required tool.

[0051] One embodiment of the present invention regarding the fixing part 4 specifically includes a base 41, an adjusting seat 42 slidably connected to the base 41, the base 41 having a relatively long sliding distance, a locking structure (not shown) provided between the base 41 and the adjusting seat 42, a top contact member 43 provided on the adjusting seat 42, one end of the workpiece being connected to the electric spindle 3 via a clamp, and the other end contacting the abutting member, which is usually a cone, so as to achieve abutment while reducing the contact area. Preferably, a bearing 3134 is provided between the abutting member and the adjusting seat to allow it to rotate. In addition, the distance between the adjusting seat 42 and the electric spindle 3 is adjusted to accommodate different workpieces.

[0052] One embodiment of the electric spindle 3 in this invention specifically includes a spindle motor 31 and a brake cylinder 32. Both ends of the output shaft of the spindle motor 31 extend outward. A chuck 35 is provided on one end of the output shaft, and a brake disc 33 is fixed on the other end. In this embodiment, the brake disc 33 and the output shaft can be fixed by a spline, which is more secure than using screws or other fixing methods when forced braking is required. The outer periphery of the brake disc 33 is provided with a "V"-shaped brake groove 34. The output end of the brake cylinder 32 is provided with a pressure rod 36, which faces the brake groove 34. The end of the pressure rod 36 is adapted to the shape of the brake groove 34. Furthermore, since the brake disc 33 and the output shaft are coaxially arranged, the pressure rod 36 is in a vertical state and always remains perpendicular to the axis of the output shaft.

[0053] Preferably, the brake cylinder 32 is mounted on the spindle motor 31 via an extension plate 37, which reduces the volume occupied. Secondly, since the spindle motor 31 often needs to be moved, mounting the brake cylinder 32 on the spindle motor 31 allows it to move with the motor, fixing the relative positions of the two and ensuring the braking effect.

[0054] During normal operation, the brake cylinder 32 is in a retracted state, causing the pressure rod 36 to move away from the brake groove 34. At the same time, the main spindle motor 31 causes the output shaft to rotate at high speed, and the brake disc 33 rotates synchronously with the output shaft. When braking is required in an emergency, the brake cylinder 32 quickly pushes the pressure rod 36 out and makes its end engage with the brake groove 34, thereby locking the brake disc 33. It should be noted that after emergency braking is triggered, the main spindle motor 31 will generally stop running, and the output shaft will rotate only by inertia. Of course, the stopping of the main spindle motor 31 and braking occur instantaneously. During this process, the brake cylinder 32 will be in a continuous output state, keeping the pressure rod 36 engaged with the brake disc 33. In addition, the pressure rod 36 is subjected to force at the contact point with the brake groove 34. The pressure rod 36 applies a force perpendicular to the output shaft to the brake disc 33, while the force on the brake disc 33 at the contact point is perpendicular to the pressure rod 36. That is, the two forces are perpendicular to each other, maximizing the force on the brake disc 33.

[0055] In another embodiment, the spindle motor 31 is in a stopped state. At this time, the brake cylinder 32 can be triggered separately to make the pressure rod 36 engage with the brake disc 33 and continuously apply pressure, thereby fixing the current position of the brake disc 33, that is, the output shaft will not rotate and will be fixed relative to the workpiece. Preferably, the angle between the force applied by the tool and the pressure rod 36 to the brake disc 33 is 90° or a multiple of 90°, which helps to counteract the bias force generated when the tool rotates.

[0056] In this invention, the spindle motor 31 includes a hollow rotor 311 and a push rod 312 passing through the rotor 311. It also has a stator that works in conjunction with the rotor 311. A clamp is installed at one end of the rotor 311 and a disassembly and assembly device 313 is installed at the other end. The disassembly and assembly device 313 is used to release and lock the push rod 312, thereby controlling the relationship between the push rod 312 and the clamp, and realizing disassembly and assembly.

[0057] Furthermore, the disassembly and assembly device 313 consists of two parts, including a locking assembly and a fixing assembly, both of which are fitted onto the ends of the rotor 311;

[0058] The locking assembly includes a hemispherical movable block 3131 fitted onto the rotor 311. The movable block 3131 is rotatably engaged with the movable plate 3132. Preferably, the movable plate 3132 has a space in the middle for accommodating the movable block 3131. A bearing 3134 is located in the space. The two ends of the bearing 3134 are symmetrically connected to the movable plate 3132. The inner side of the bearing 3134 is fixedly connected to the movable block 3131. That is, the movable block 3131 can rotate relative to the bearing 3134, but cannot move axially relative to the bearing 3134. In addition, one end of the movable plate 3132 is rotatably connected to a fixing member. This embodiment does not limit the movable member, as long as the relative position is fixed. Preferably, the fixing frame is an extension plate 37. The other end of the movable plate 3132 is rotatably connected to the output end of the locking cylinder 3133 through a connector. When it is in operation, the movable block 3131 can rotate with the rotor 311. When axial movement is required, the movable plate 3132 is driven to move up and down by the extension and retraction of the locking cylinder 3133.

[0059] In addition, the fixing component includes a fixing sleeve 3141 fixed on the rotor 311. The fixing sleeve 3141 can also rotate synchronously with the rotor 311. Several grippers 3142 are rotatably connected to the fixing sleeve 3141. A reset spring is provided between the fixing sleeve 3141 and the grippers 3142. One end of the gripper 3142 can be moved to abut, and the other end can extend into the rotor 311 and abut against the end of the push rod 312.

[0060] In the initial state, the movable block 3131 is located away from the gripper 3142. Under the action of the reset spring, the ends of all grippers 3142 near the movable block 3131 retract and move closer together, while the other ends of all grippers 3142 are in an extended state away from each other. At this time, the push rod 312 is in a relaxed state, and the fixture can be replaced. After replacement, the locking cylinder 3133 pushes the movable plate 3132 upward, and simultaneously drives the movable block 3131 to move axially. At this time, under the action of the spherical surface, the grippers 3142 that were originally in a retracted state gradually open along the trajectory of the spherical surface, and the other ends of all grippers 3142 will gradually retract and move closer together. After the movable block 3131 reaches a certain position, the end of the gripper 3142 that is in contact with the spherical surface opens to the maximum, and the other end moves to the minimum range. At the same time, it moves to a certain extent and abuts against one end of the push rod 312, and applies a pushing force, so that the push rod 312 abuts against the tool or fixture placed at the end of the rotor 311 to achieve locking.

[0061] It should be noted that the rotor 311 is provided with several through holes 313 corresponding to the grippers 3142, so that the ends of the grippers 3142 can be inserted into the inner cavity.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A dual-mode multi-tool machine tool, comprising a machine table (1), a moving device (2), an electric spindle (3) and a fixed part (4) mounted on the machine table (1), characterized in that: the electric spindle (3) is provided with a brake function to stop rotation and fix the output shaft when it is static, the output end of the electric spindle (3) is used to mount a clamp, the fixed part (4) is opposite to the output end of the electric spindle (3), and the clamp or the clamp cooperates with the fixed part (4) to form a machining position; a rotating tool tower (5) is mounted on the moving end of the moving device (2), a plurality of mounting positions (53) are arranged on the rotating tool tower (5), and a fixed tool extension (61) and a moving tool extension (62) can be mounted on the rotating tool tower (5); a plurality of driving assemblies (54) are mounted in the rotating tool tower (5), the driving assemblies (54) are independent of each other and correspond to the mounting positions (53), the number of the driving assemblies (54) is less than the number of the mounting positions (53), and the driving assemblies (54) are used to provide power to the moving tool extension (62); the driving assembly (54) comprises a driving motor (541), the driving motor (541) is mounted on the inner side of the rotating tool tower (5) through a mounting piece (542), the output shaft of the driving motor (541) extends into the mounting position (53), and a gear (543) is connected to the output shaft; the moving tool extension (62) is mounted on the outer side of the rotating tool tower (5), has an input end (621) extending into the mounting position (53), and is provided with a gear ring (622) on the input end (621), the gear ring (622) is engaged with the gear (543); the gear (543) is a bevel gear (543), the gear ring (622) is adapted to the bevel gear (543), the bevel gear is embedded in the gear ring (622), and the gear and the gear ring can be engaged together without adjusting the position of the gear ring every time the bevel gear is installed.

2. A dual mode multi-tool machine tool as claimed in claim 1, wherein: the fixed part (4) comprises a base (41), an adjusting seat (42) is slidably connected to the base (41), a locking structure is arranged between the base (41) and the adjusting seat (42), and a top contact piece (43) is arranged on the adjusting seat (42).

3. A dual mode multi-tool machine tool as claimed in claim 1, wherein: the electric spindle (3) comprises a spindle motor (31) and a brake cylinder (32); the output shaft of the spindle motor (31) extends outward at both ends, a brake disc (33) is fixedly arranged at one end of the output shaft, a "V"-shaped brake groove (34) is arranged on the outer periphery of the brake disc (33), and a chuck (35) is arranged at the other end of the output shaft; the brake cylinder (32) is provided with a pressing rod (36) at the output end, and the end of the pressing rod (36) is adapted to the shape of the brake groove (34).

4. A dual mode multi-tool machine tool as claimed in claim 3, wherein: the brake cylinder (32) is mounted on the spindle motor (31) through an extension plate (37).

5. A dual mode multi-tool machine tool as claimed in claim 4, wherein: the spindle motor (31) comprises a hollow rotor (311) and a top rod (312) arranged in the rotor (311), one end of the rotor (311) is mounted with a clamp, the other end is mounted with a dismounting device (313), the dismounting device (313) extends into the rotor (311) and is connected with the top rod (312), and one end of the top rod (312) can abut against the clamp.

6. A dual mode multi-tool machine tool as claimed in claim 5, wherein: The dismounting device (313) comprises a locking assembly and a fixing assembly, both of which are sleeved on the end of the rotor (311); The locking assembly comprises a hemispherical movable block (3131) sleeved on the rotor (311), the movable block (3131) is rotationally connected with a movable plate (3132), one end of the movable plate (3132) is rotationally connected with a fixing member, and the other end is rotationally connected with an output end of a locking cylinder (3133) through a connecting member; The fixing assembly comprises a fixing sleeve (3141) fixed on the rotor (311), a plurality of clamping jaws (3142) are rotationally connected on the fixing sleeve (3141), a reset elastic member is arranged between the fixing sleeve (3141) and the clamping jaws (3142), one end of the clamping jaws (3142) can abut against the movable block (3131), and the other end can extend into the rotor (311) to abut against the end of the ejector rod (312).

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