阅读说明：本技术 机床主轴盘形刀具装刀、松刀装置及方法 (Device and method for installing and releasing disc-shaped cutter of machine tool spindle ) 是由 杨程 辛红敏 于 2019-11-07 设计创作，主要内容包括：一种机床主轴盘形刀具装刀、松刀装置及方法,包括滑轨、支架、定齿轮、齿轮螺杆、装刀法兰、主轴法兰、主轴螺纹,所述滑轨固定,所述支架可沿所述轨道移动,所述定齿轮安装在所述支架上,所述齿轮螺杆包括齿轮部和螺杆部,所述齿轮部可与所述定齿轮形成齿轮啮合配合,所述装刀法兰的中间设有第一螺纹孔,在所述第一螺纹孔的周围还设有若干第二螺纹孔,所述盘形刀具上设有装配孔,在所述装配孔的周围还设有若干第三螺纹孔。本发明涉及机床工具领域,在对盘形刀具利用螺纹顶压力实现拆装时,可以利用机床主轴的自身旋转作为拧顶压螺杆的动力源,且能同时拧多个螺杆,以保障被拆装的盘形刀具沿装配轴线方向受力均匀,拆装效率高,拆装过程简易便捷。(The utility model provides a lathe main shaft disc cutter dress sword, pine sword device and method, includes slide rail, support, fixed gear, gear screw, dress sword flange, main shaft screw thread, the slide rail is fixed, the support can be followed rail motion, fixed gear installs on the support, the gear screw includes gear portion and screw rod portion, gear portion can with fixed gear forms gear engagement cooperation, the centre of dress sword flange is equipped with first screw hole still be equipped with a plurality of second screw holes around the first screw hole, be equipped with the pilot hole on the disc cutter still be equipped with a plurality of third screw holes around the pilot hole. The invention relates to the field of machine tools, and discloses a machine tool with a screw top pressure device, which can utilize the self-rotation of a machine tool spindle as a power source for screwing and pressing a screw rod when a disc-shaped cutter is disassembled and assembled by utilizing the screw top pressure, and can simultaneously screw a plurality of screw rods so as to ensure that the disassembled and assembled disc-shaped cutter is uniformly stressed along the direction of an assembly axis, the disassembling and assembling efficiency is high, and the disassembling and assembling process is simple and convenient.)

1. A cutter mounting and releasing device for a disk-shaped cutter of a machine tool spindle comprises a spindle rotating part (7), a spindle fixing part (8) and a disk-shaped cutter (6), wherein the disk-shaped cutter (6) is arranged at the extending end of the spindle rotating part (7) in a matched mode through a shaft hole, and is characterized by further comprising a sliding rail (1), a support (2), a fixed gear (3), a gear screw (4), a cutter mounting flange (5), a spindle flange (701) and spindle threads (703),

the slide rail (1) is fixed, the assembling end (201) of the bracket (2) is matched with the track (102) in the slide rail (1) and can move along the track (102),

the fixed gear (3) is arranged on the bracket (2), the axial lead direction of the fixed gear is parallel to the direction of the track (102), and the axial lead of the fixed gear coincides with the rotating shaft of the main shaft rotating part (7),

the gear screw (4) is divided into two parts along the length direction, namely a gear part (402) and a screw part (403), the gear part (402) can form gear meshing fit with the fixed gear (3),

a first threaded hole (501) is formed in the middle of the cutter mounting flange (5) and can be matched with a spindle thread (703) on a spindle rotating part (7), a plurality of second threaded holes (502) are formed in the periphery of the first threaded hole (501), the second threaded holes (502) can be matched with a screw part (403) of the gear screw rod 4,

the disc-shaped cutter (6) is matched with a mounting shaft (702) on the extending end of the main shaft rotating part (7) through a mounting hole (601) on the disc-shaped cutter, a plurality of third threaded holes (603) are also arranged around the mounting hole (601), the third threaded holes (603) can be matched with a screw rod part (403) of the gear screw rod (4),

the extension end of the main shaft rotating part (7) is arranged on a main shaft flange (701), and an assembly shaft (702) and a main shaft thread (703) are sequentially arranged on the extension end along the direction far away from the main shaft flange (701).

2. The device for loading and unloading a disc-shaped tool for machine tools according to claim 1, wherein the number of said second threaded holes (502) is 2-10.

3. The device for loading and unloading a disc-shaped tool for machine tool spindles according to claim 1, characterized in that the number of said third threaded holes (603) is 2-10.

4. The device for loading and unloading the disc-shaped cutter of the machine tool spindle according to claim 1, characterized in that the fixed gear (3) and the bracket (2) are detachably mounted.

5. The device for loading and unloading the disc-shaped cutter on the main shaft of the machine tool according to claim 1, characterized in that the tooth width of the fixed gear (3) is not equal to the tooth width of the gear part (402) of the gear screw (4), and the difference between the tooth width of the fixed gear and the tooth width of the gear part is greater than or equal to the length of the assembling shaft (702).

6. The device for loading and unloading a disc-shaped tool for a machine tool spindle according to claim 1, characterized in that the second threaded hole (502) has the same direction of rotation as the third threaded hole (603) and the opposite direction of rotation to the spindle thread (703).

7. A method for loading and unloading a disc-shaped cutter of a machine tool spindle, which is characterized in that based on the device for loading and unloading the disc-shaped cutter of the machine tool spindle of any one of claims 1-6, the method comprises a step of loading and a step of unloading,

the step of installing the cutter comprises

Step a: manually aligning an assembly hole (601) of a disc-shaped cutter (6) with the extending end of a main shaft rotating part (7), pushing the disc-shaped cutter (6) towards a main shaft flange (701) to enable the assembly hole (601) to be matched with the assembly shaft (702) in a short length until the disc-shaped cutter is pushed to be fixed, then installing a cutter mounting flange (5) on the extending end of the main shaft rotating part (7) through matching of a first threaded hole (501) and a main shaft thread (703), screwing a gear screw (4) into a second threaded hole (502) on the cutter mounting flange (5), and stopping screwing the gear screw (4) when a screw part (403) of the gear screw (4) is in contact with an end face (604) of the disc-shaped cutter (6);

step b: pushing the bracket (2) to move along the track (102) of the sliding rail (1) to the direction of the gear screw (4) until the fixed gear (3) on the bracket (2) and the gear part (402) of the gear screw (4) form good meshing;

step c: then starting a machine tool spindle, enabling a spindle rotating part (7) to rotate along the same direction as the rotating direction of the second threaded hole (502), driving all gear screws (4) to rotate along the screwing direction, enabling the end faces of screw rod parts (403) of the gear screws (4) to extrude the end faces (604) of the disc-shaped cutters (6), and overcoming the friction force between the assembly holes (601) of the disc-shaped cutters (6) and the assembly shaft (702) by utilizing the extrusion force and enabling the friction force and the assembly shaft to be gradually matched;

step d: when the other end face of the disc-shaped cutter (6) is attached to the end face (706) of the main shaft flange (701), stopping rotating the main shaft of the machine tool, withdrawing the support (2), screwing out all gear screws (4), continuously screwing the cutter mounting flange (5) into the main shaft thread (703) through the first threaded hole (501) until the cutter mounting flange is attached to the end face (604) of the disc-shaped cutter (6), and completing cutter mounting of the disc-shaped cutter (6);

the step of loosening the cutter comprises

Step e: unscrewing the cutter mounting flange (5) from the main shaft thread (703), and screwing the gear screws (4) in corresponding number according to the number of third threaded holes (603) on the disc-shaped cutter (6) until the gear screws are not screwed;

step f: pushing the bracket (2) to move along the track (102) of the sliding rail (1) to the direction of the gear screw (4) until the fixed gear (3) on the bracket (2) and the gear part (402) of the gear screw (4) form good meshing;

step g: then starting a machine tool spindle, enabling a spindle rotating part (7) to rotate along the same direction as the rotating direction of the third threaded hole (603), driving all gear screws (4) to rotate along the screwing direction, enabling the end surfaces of screw rod parts (403) of the gear screws (4) to be extruded with the end surface (706) of a spindle flange (701), and enabling the assembling holes (601) of the disc-shaped cutter (6) to gradually withdraw from being matched with the assembling shaft (702) by utilizing the extrusion force;

step h: and when the matching between the assembly hole (601) and the assembly shaft (702) is completely released, stopping the main shaft of the machine tool, withdrawing the bracket (2), screwing out all the gear screws (4), and taking down the disc-shaped cutter (6) to finish the cutter loosening of the disc-shaped cutter (6).

Technical Field

The invention relates to the field of machine tool tools, in particular to a device and a method for installing and loosening a disc-shaped cutter of a machine tool spindle.

Background

The disc-shaped cutter is a common cutter for removing the large allowance of a blank, the diameter of the disc-shaped cutter is usually larger, and the load in the machining process is also very large, so that the cutter handle of the common bar-shaped cutter cannot meet the load requirement for the installation of the disc-shaped cutter, the disc-shaped cutter is usually installed on a main shaft of a machine tool in a shaft hole tight fit mode, and the relative rotational freedom degree of the disc-shaped cutter is restrained by a key and a key groove.

The tight fit is a common shaft hole cooperation mode, and it is between clearance fit and interference fit, and the key feature can install and can dismantle again, still need guarantee the firm degree of assembly simultaneously, generally does not allow the appearance to rock and become flexible in the course of the work. The tight fit has high requirements on the dimensional accuracy and the assembly accuracy of parts, the disassembly and assembly process is usually troublesome, and the tight fit and the very large friction force during disassembly and assembly make the disassembly and assembly of the disc-shaped cutter difficult without using a special tool, so in actual operation, a copper bar or a mallet is usually adopted to axially beat the disc-shaped cutter to overcome the friction force between the mounting shaft and the mounting hole so as to realize the disassembly and the assembly of the disc-shaped cutter, but the method is time-consuming and labor-consuming and is easy to damage the matching surface; the method for overcoming the friction force between the assembly hole shafts by utilizing the top pressure of the threads is also a common tight fit disassembling method, but usually a plurality of screw rods distributed around the assembly hole shafts are required to act together to eject the disc-shaped cutter, otherwise uneven jacking and deflection caused by stress are easy to occur, so that the clamping between the assembly hole and the assembly shaft is caused, therefore, usually, a plurality of screw rods uniformly distributed around the hole shafts are adopted, each screw rod is screwed for a few times in a diagonal sequence every time, so as to ensure the stress uniformity of the disc-shaped cutter assembled and disassembled along the assembly axis direction, the method is troublesome to operate, and each screw rod needs to be screwed for a plurality of times in sequence.

The invention provides a device and a method for mounting and dismounting a special disk-shaped cutter of a machine tool spindle, which aim to solve the difficulties and problems of the disk-shaped cutter in the mounting and dismounting process.

Disclosure of Invention

The invention aims to provide a device and a method for assembling and disassembling a disc-shaped cutter of a machine tool spindle, wherein when the disc-shaped cutter is assembled and disassembled by overcoming the friction force between assembling hole shafts by utilizing the top pressure of threads, the self rotation of the machine tool spindle can be used as a power source for rotating a top pressure screw, and a plurality of screws can be simultaneously screwed so as to ensure the uniformity of the stress of the assembled and disassembled disc-shaped cutter along the direction of an assembling axis, so that the assembly and disassembly efficiency is high, and the assembly and disassembly process is simple and convenient.

In order to achieve the purpose of the invention, the corresponding technical research idea and technical scheme are as follows:

when the disk-shaped cutter with the shaft hole tightly matched is disassembled and assembled by utilizing the top pressure of the threads, a plurality of top pressure screw rods can be screwed at the same time, which is the most ideal situation. It is not possible to design a device such that a plurality of pressing screws around the assembling shaft hole rotate simultaneously, and a plurality of screws are screwed in and out synchronously. Because the spindle of the machine tool can rotate, the inventor thinks that if the rotation of the spindle is utilized to be the power for screwing a plurality of screw rods, the semi-automatic disassembly and assembly of the disc-shaped cutter can be realized, which greatly improves the assembly and disassembly efficiency of the disc-shaped cutter on the spindle. The problem is how to drive a plurality of screws to respectively rotate along the self axes by utilizing the single-axis rotation of the main shaft, because the disc-shaped cutter is arranged on the main shaft, the disc-shaped cutter can be driven to rotate by the rotation of the main shaft of the machine tool, if the disc-shaped cutter is assembled and disassembled by using the jacking screw rod, the jacking screw rod can inevitably rotate along with the rotation of the disc-shaped cutter when the disc-shaped cutter rotates along with the main shaft, and under the condition, the jacking screw rod rotating around the axial lead of the main shaft of the machine tool rotates around the self axial lead of the jacking screw rod at the same time, which is a big difficulty for.

Based on the above analysis, the inventor proposes a machine tool spindle disk cutter mounting and releasing device, which comprises a spindle rotating part, a spindle fixing part, and a disk cutter, wherein the disk cutter is mounted on the extending end of the spindle rotating part through a shaft hole in a matching manner, the disk cutter further comprises a slide rail, a support, a fixed gear, a gear screw, a cutter mounting flange, a spindle flange, and a spindle thread, the slide rail is fixed, the mounting end of the support is matched with a track in the slide rail and can move along the track, the fixed gear is mounted on the support, the axial lead direction of the fixed gear is parallel to the track direction, the axial lead of the fixed gear coincides with the rotating shaft of the spindle rotating part, the gear screw is divided into two parts along the length direction thereof, the gear part and the screw part are respectively, the gear part can form gear meshing cooperation with the fixed gear, a first threaded hole is arranged in the middle of, can with the main shaft screw-thread fit on the main shaft rotating part still be equipped with a plurality of second screw holes around the first screw hole, the second screw hole can with gear screw's screw rod portion cooperation, the disk cutter stretches out the assembly axle cooperation of serving through pilot hole and main shaft rotating part above that still be equipped with a plurality of third screw holes around the pilot hole, the third screw hole can with gear screw's screw rod portion cooperation, the end that stretches out of main shaft rotating part is installed on the main shaft flange, it is equipped with assembly axle, main shaft screw in proper order along the direction of keeping away from the main shaft flange to stretch out serving. The gear screw is the above-mentioned top pressure screw, and the head of the screw is designed into a gear shape, which is different from the common screw. The fixed gear is a core component of the invention, when the gear part of the gear screw is meshed with the fixed gear, and at this time, if the gear screw tends to rotate around the axis of the main shaft along with the rotation of the machine tool main shaft, because the fixed gear cannot rotate, the teeth matched with the gear screw can block the rotation of the gear screw around the axis of the main shaft, and the direction of the blocking force is along the direction of the excircle tangent of the gear part of the gear screw, the blocking force can drive the gear screw to rotate around the axis of the gear screw, so that when the machine tool main shaft rotating part rotates, the fixed gear can generate a screwing action on the gear screw, and the screwing direction is the same as the rotating direction of the machine tool main shaft rotating part. When the gear screws are provided with a plurality of gears and distributed along the same circumference, the fixed gear can simultaneously screw the plurality of gear screws.

Preferably, the number of the second threaded holes is 2-10.

Preferably, the number of the third threaded holes is 2-10.

Furthermore, a detachable installation mode is adopted between the fixed gear and the bracket. In this case, the specification of the fixed gear needs to be replaceable to realize the engagement between the fixed gear and the gear screw, so that in order to improve the applicability of the invention, a detachable installation mode is adopted between the fixed gear and the bracket.

Furthermore, the tooth width of the fixed gear is not equal to the tooth width of the gear part of the gear screw, and the difference between the tooth width of the fixed gear and the tooth width of the gear part of the gear screw is larger than or equal to the length of the assembling shaft. When the gear screw is screwed on the fixed gear, the gear screw can not only rotate along the axis of the gear screw, but also can feed along the axis direction according to the length of advancing or retreating a screw pitch per turn, therefore, if the tooth width of the fixed gear is equal to the tooth width of the gear screw, the meshing length between the fixed gear and the gear screw is shorter and shorter until the fixed gear and the gear screw are separated along with the continuous feeding of the gear screw, therefore, the tooth widths of the fixed gear and the gear screw are not equal, and the difference between the fixed gear and the gear screw is greater than or equal to the length of the assembling shaft, so that the fixed gear and the gear screw can be ensured to keep a meshing state in the process of assembling.

Furthermore, the second threaded hole and the third threaded hole have the same rotating direction and are opposite to the rotating direction of the main shaft thread. If the second threaded hole and the main shaft have the same thread turning direction, when the disc-shaped cutter is installed, because the teeth of the fixed gear can apply a blocking force opposite to the main shaft turning direction to the teeth of the gear screw, the blocking force can not only enable the gear screw to rotate around the axis of the gear screw, but also can be transmitted to the cutter mounting flange, so that the cutter mounting flange has the tendency of being unscrewed out and loosened, and the pressing effect of the threads is reduced or disabled; similarly, if the third threaded hole has the same thread direction as the spindle, the same phenomenon occurs when the disc cutter is removed by the unclamping tool. Therefore, the second threaded hole should have the same direction of rotation as the third threaded hole, and both opposite directions of rotation to the main shaft thread.

The invention also comprises a tool mounting and tool releasing method for the disc-shaped cutter of the machine tool spindle, which is based on the tool mounting and tool releasing device for the disc-shaped cutter of the machine tool spindle, and the method comprises a tool mounting step and a tool releasing step.

The step of installing the cutter comprises

Step a: aligning an assembling hole of a disc-shaped cutter to the extending end of a main shaft rotating part in a manual mode, pushing the disc-shaped cutter towards the direction of a main shaft flange to enable the assembling hole to be matched with the assembling shaft in a short length until the disc-shaped cutter cannot be pushed, then installing a cutter mounting flange on the extending end of the main shaft rotating part through the matching of a first threaded hole and a main shaft thread, screwing a gear screw into a second threaded hole in the cutter mounting flange, and stopping screwing the gear screw after a screw part of the gear screw is contacted with the end surface of the disc-shaped cutter;

step b: pushing the bracket to move along the track of the sliding rail to the direction of the gear screw rod until a fixed gear on the bracket is well meshed with a gear part of the gear screw rod;

step c: then starting the machine tool spindle, enabling the spindle rotating part to rotate along the same direction as the rotating direction of the second threaded hole, driving all gear screws to rotate along the screwing direction, enabling the end surfaces of the screw parts of the gear screws to extrude the end surfaces of the disc-shaped cutters, and utilizing the extrusion force to overcome the friction force between the assembly holes of the disc-shaped cutters and the assembly shaft and enable the assembly holes and the assembly shaft to be gradually matched;

step d: and when the other end face of the disc-shaped cutter is attached to the end face of the main shaft flange, stopping the main shaft of the machine tool, withdrawing the support, screwing out all gear screws, continuously screwing the cutter mounting flange into the main shaft threads through the first threaded hole until the cutter mounting flange is attached to the end face of the disc-shaped cutter, and completing cutter mounting of the disc-shaped cutter.

The step of loosening the cutter comprises

Step e: screwing off the cutter mounting flange from the main shaft threads, and screwing in a corresponding number of gear screws according to the number of third threaded holes in the disc-shaped cutter until the gear screws are not screwed;

step f: pushing the bracket to move along the track of the sliding rail to the direction of the gear screw rod until a fixed gear on the bracket is well meshed with a gear part of the gear screw rod;

step g: then starting a machine tool spindle, enabling a spindle rotating part to rotate in the same direction as the rotating direction of the third threaded hole, driving all gear screws to rotate in the screwing direction, enabling the end surfaces of the screw parts of the gear screws and the end surface of a spindle flange to generate extrusion, and enabling the assembling holes of the disc-shaped cutter to gradually withdraw from being matched with the assembling shaft by utilizing the extrusion force;

step h: and when the matching between the assembling hole and the assembling shaft is completely released, stopping rotating the main shaft of the machine tool, withdrawing the support, screwing out all the gear screws, and taking down the disc-shaped cutter to finish the cutter loosening of the disc-shaped cutter.

The invention has the beneficial effects that: when the disk-shaped cutter is disassembled and assembled by overcoming the friction force between the assembling hole shafts by utilizing the top pressure of the threads, the self-rotation of the machine tool main shaft can be used as a power source for enabling the top pressure screw rod to rotate, and the plurality of screw rods can be simultaneously screwed so as to ensure the uniformity of the stress of the disassembled and assembled disk-shaped cutter along the assembling axis direction. It should be noted that the advantageous effects of the present invention are not limited to the above, and since the advantageous effects of specific technical details are not necessarily global, the advantageous effects of a specific technical detail should be understood in the context of the entire contents described above and below.

Drawings

Fig. 1 is an exploded schematic view of parts of a disc-shaped cutter mounting and releasing device of a machine tool spindle.

Fig. 2 is a schematic view of a disc cutter loading and unloading device of a machine tool spindle.

Fig. 3 is a schematic view showing the mounting of a disc cutter by the disc cutter mounting and dismounting device of the machine tool spindle.

Fig. 4 is a schematic view showing the removal of the disc cutter by the disc cutter setting and releasing device of the machine tool spindle.

Detailed Description

The present invention will be described in further detail below with reference to embodiments of the present invention and the accompanying drawings.

As shown in fig. 1-4, a device for mounting and releasing a disc-shaped cutter on and from a spindle of a machine tool comprises a spindle rotating part 7, a spindle fixing part 8, and a disc-shaped cutter 6, wherein the disc-shaped cutter 6 is mounted on an extending end of the spindle rotating part 7 through a shaft hole in a matching manner, the device further comprises a slide rail 1, a bracket 2, a fixed gear 3, a gear screw 4, a cutter mounting flange 5, a spindle flange 701, and a spindle thread 703, the slide rail 1 is fixed on a machine tool column or other fixed parts through a slide rail base 101, a mounting end 201 of the bracket 2 is matched with a rail 102 in the slide rail 1 and can move along the rail 102, the fixed gear 3 is mounted on a cage 203 of the bracket 2, the axial lead direction of the fixed gear is parallel to the direction of the rail 102, the axial lead of the fixed gear coincides with a rotating shaft of the spindle rotating part 7, and the, the cutter mounting structure comprises a gear part 402 and a screw part 403, wherein the top end of the gear part 402 is further provided with an inner hexagonal groove 401, the gear part 402 can be in gear meshing fit with a fixed gear 3, a first threaded hole 501 is formed in the middle of a cutter mounting flange 5 and can be matched with a main shaft thread 703 on a main shaft rotating part 7, a plurality of second threaded holes 502 are further formed around the first threaded hole 501, the second threaded holes 502 can be matched with the screw part 403 of a gear screw 4, a disc-shaped cutter 6 is matched with an assembling shaft 702 on the extending end of the main shaft rotating part 7 through an assembling hole 601 on the disc-shaped cutter 6, a plurality of third threaded holes 603 are further formed around the assembling hole 601, the third threaded holes 603 can be matched with the screw part 403 of the gear screw 4, the extending end of the main shaft rotating part 7 is mounted on the flange 701, and an assembling shaft 702 and a main shaft 702 are sequentially arranged on the extending end along the, A main shaft thread 703, an optical axis 704, and a key 705 mounted on the mounting shaft 702 to match with the key groove 602 on the disc cutter 6. The teeth of the disc cutter 6 are typically mounted on the outer circumference of the cutter body 605. The design of the cage 203 is to reduce the weight, and the hollow cage 203 is to avoid the interference with the optical axis 704, the cage 203 is connected with the assembling end 201 of the bracket 2 by the bracket beam 202, and the length of the bracket beam 202 is set according to the actual requirement. The middle portion of the fixed gear 3 is also hollow, and interference with the optical axis 704 is also avoided. The main shaft can also comprise a swing shaft besides a rotating shaft, the swing shaft is arranged on a swing driving disc through a swing shaft flange 10 to rotate, and the main shaft fixing part 8 is connected with the swing shaft flange 10 through a connecting body 9. When the main shaft comprises a swinging shaft, the swinging shaft should be swung to a matched angle before the invention is used, so that the axis of the main shaft rotating part 7 is overlapped with the axis of the fixed gear 3, and if the swinging shaft is also connected to a moving shaft, the swinging shaft should be moved to a proper position and swung to a matched angle. In order to facilitate the manual screwing of the cutter mounting flange 5, a hole can be formed in the outer circle 503 of the cutter mounting flange 5, and when the cutter mounting flange is difficult to screw by hands, a rod-shaped object can be inserted into the hole formed in the outer circle 503, and the cutter mounting flange 5 can be screwed by means of a force arm formed by the rod-shaped object.

Preferably, the number of the second threaded holes 502 is 2-10, and the number of the second threaded holes 502 shown in fig. 1-4 is 3.

Preferably, the number of the third threaded holes 603 is 2-10, and the number of the third threaded holes 603 shown in fig. 1-4 is 3.

Furthermore, a detachable installation mode is adopted between the fixed gear 3 and the bracket 2.

Further, the tooth width of the fixed gear 3 is not equal to the tooth width of the gear portion 402 of the gear screw 4, and the difference between the two is greater than or equal to the length of the assembling shaft 702. It should be noted that the length of the mounting shaft 702 should be equal to the thickness between the front and rear end faces of the disc cutter 6, so that the cutter mounting flange 5 can be tightly attached to the disc cutter 6 after being completely tightened, and the fixing effect is achieved.

Further, the second threaded hole 502 and the third threaded hole 603 have the same rotational direction, and are opposite to the rotational direction of the spindle thread 703.

The invention also comprises a tool mounting and tool releasing method for the disc-shaped cutter of the machine tool spindle, which is based on the tool mounting and tool releasing device for the disc-shaped cutter of the machine tool spindle, and the method comprises a tool mounting step and a tool releasing step.

As shown in fig. 1 and 3, the step of installing the cutter comprises

Step a: manually aligning the assembly hole 601 of the disc-shaped cutter 6 with the extending end of the spindle rotating part 7, pushing the disc-shaped cutter 6 in the direction of the spindle flange 701 to enable the assembly hole 601 to be matched with the assembly shaft 702 in a short length until the disc-shaped cutter is not pushed, then installing the cutter mounting flange 5 on the extending end of the spindle rotating part 7 through the matching of the first threaded hole 501 and the spindle thread 703, then screwing the gear screw 4 into the second threaded hole 502 on the cutter mounting flange 5, and stopping screwing the gear screw 4 when the screw part 403 of the gear screw 4 is contacted with the end surface 604 of the disc-shaped cutter 6;

step b: pushing the bracket 2 to move along the track 102 of the sliding rail 1 towards the direction of the gear screw 4 until the fixed gear 3 on the bracket 2 and the gear part 402 of the gear screw 4 form good meshing;

step c: then, the machine tool spindle is started, the spindle rotating part 7 is rotated in the same direction as the second threaded hole 502, the three gear screws 4 in fig. 3 are driven to rotate in the screwing direction, the end surfaces of the screw parts 403 of the gear screws 4 press the end surfaces 604 of the disc-shaped cutters 6, and the friction force between the assembly holes 601 of the disc-shaped cutters 6 and the assembly shaft 702 is overcome by the pressing force, so that the two are gradually matched;

step d: when the other end face of the disc-shaped cutter 6 is attached to the end face 706 of the spindle flange 701, the machine tool spindle is stopped, the support 2 is withdrawn, all the gear screws 4 are unscrewed, and the cutter mounting flange 5 is continuously screwed into the spindle thread 703 through the first threaded hole 501 until the cutter mounting flange is attached to the end face 604 of the disc-shaped cutter 6, so that the cutter mounting of the disc-shaped cutter 6 is completed.

As shown in fig. 1 and 4, the knife loosening step comprises

Step e: unscrewing the cutter mounting flange 5 from the main shaft thread 703, and screwing the gear screws 4 in corresponding number according to the number of the third threaded holes 603 on the disc-shaped cutter 6 until the gear screws are not screwed;

step f: pushing the bracket 2 to move along the track 102 of the sliding rail 1 towards the direction of the gear screw 4 until the fixed gear 3 on the bracket 2 and the gear part 402 of the gear screw 4 form good meshing;

step g: then, the machine tool spindle is started, the spindle rotating part 7 is rotated along the same direction as the rotating direction of the third threaded hole 603, the three gear screws 4 in fig. 4 are driven to rotate along the screwing direction, the end surfaces of the screw parts 403 of the gear screws 4 and the end surface 706 of the spindle flange 701 are squeezed, and the assembling holes 601 of the disc-shaped cutter 6 are gradually withdrawn from the matching with the assembling shaft 702 by the squeezing force;

step h: and when the matching between the assembling hole 601 and the assembling shaft 702 is completely released, stopping the main shaft of the machine tool, withdrawing the bracket 2, screwing out all the gear screws 4, and taking down the disc-shaped cutter 6 to finish the cutter loosening of the disc-shaped cutter 6.