Novel milling cutter

Abstract

The utility model relates to a novel milling cutter which comprises a cutter head capable of being replaced according to milling requirements and use conditions, and the cutter head is connected with a second transmission shaft of a milling rotating motor through a multi-position fastening and clamping assembly capable of protectively clamping the cutter head; the axial upper end, away from the multi-position fastening and clamping assembly, of the milling rotating motor is installed at the moving end of a high-precision deflection assembly capable of driving the milling rotating motor to deflect and obliquely move. The top end, away from the milling rotating motor, of the high-precision deflection assembly is connected with an annular track driving motor capable of driving the high-precision deflection assembly to rotate in an annular track mode in the inclined state, and the axial upper end of the annular track driving motor is connected with an auxiliary positioning sleeve. According to the utility model, the deflection precision and the stability of the inclination angle adjusting structure can be improved, and the structural contours such as inclined slotted holes and annular grooves can be processed with high precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to a milling cutter technical field especially relates to a novel milling cutter. BACKGROUND

[0002] With the development of aviation technology, alloy parts are widely used, aluminum alloy is a commonly used structural material, using aluminum alloy to make the parts of aviation equipment can greatly reduce the weight of the aviation equipment. The aviation equipment meets the fluid dynamics characteristics, and the resistance of the aviation equipment is reduced. At present, the surface profile complexity and assembly precision of the aviation structural parts are further improved due to assembly. Therefore, the machining precision, stability and working angle of the machining equipment need to be improved according to the specific machining requirements to ensure that different surface profiles are machined on the surface of the high-hardness alloy aviation structural parts. The milling cutter is a rotary cutter with one or more teeth used for milling, and each tooth intermittently cuts the excess of the workpiece during work. The milling cutter is mainly used for machining planes, steps, grooves, shaped surfaces and cutting off workpieces on a milling machine. In today's technical means, milling cutters are often used in aviation aluminum production. Among them, the end mill is the most commonly used milling cutter on numerical control machine tools. The cylindrical surface and end face of the end mill have cutting tools, which can cut simultaneously or separately. It is mainly used for plane milling, groove milling, step surface milling and profiling milling. The end mill can be used for face milling and side wall face milling.

[0003] The existing milling cutter can basically realize high-precision milling of ordinary materials to produce high-precision structural parts, and can also adjust the inclination angle of the milling cutter by setting a hydraulic rod or a deflection motor, so as to realize the machining of surface inclined pits such as inclined holes and inclined grooves. However, due to the greater hardness and structural strength of aviation structural parts made of alloy materials such as aluminum alloy, the smooth milling process is hindered. In the machining process, cutting vibration often has a significant impact on the tool position offset, which affects the machining precision and surface quality. Especially, the driving precision and deflection precision of the existing technology are low, and the stability of the inclination posture of the milling cutter after deflection is poor. When facing high-hardness materials such as aviation aluminum alloy, it is easy to appear machining deviation and other adverse shaking, which makes it difficult to effectively control the tool position offset during the machining process, and the machining precision is reduced. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a new type milling cutter which can improve the deflection precision and the stability of the inclination adjusting structure and high-precisionly complete the processing of the structure profile such as the slot hole and the ring groove in the inclined state, so as to solve the problems that the existing milling cutter cannot effectively control the position offset during the cutter movement and the processing precision cannot be guaranteed when facing the complex milling processing of the high-hardness aviation material, and the driving precision of the existing milling cutter inclination adjusting structure is poor, the deflection structure stability is poor, the positioning precision and the stability cannot be guaranteed, and the processing precision is reduced.

[0005] The utility model adopts the technical scheme: a new type milling cutter, including the cutter head that can change according to the milling demand and use condition, the cutter head is connected with the second transmission shaft of milling rotary motor through the multi -position fastening clamping component that can be protected to its clamping, the axial upper end of milling rotary motor away from multi -position fastening clamping component is installed on the movement end of high -precision deflection subassembly that can drive it to occur deflection inclination movement, the top of high -precision deflection subassembly away from milling rotary motor is connected with the ring trace drive motor that can drive high -precision deflection subassembly occurs ring trace rotation in the inclination state, and the axial upper end of ring trace drive motor is connected with auxiliary positioning sleeve.

[0006] According to a preferred embodiment, the high-precision deflection assembly includes a bottom plate, a first connecting rod, a positioning vertical plate, a deflection shaft, a deflection column and a deflection adjusting mechanism, wherein the lower surface of the bottom plate supports two groups of first connecting rods, so that two positioning vertical plates connected to the axial lower ends of the two groups of first connecting rods are suspended in parallel; the deflection column is relatively rotatably connected to the deflection shaft inserted on the plate body between the two positioning vertical plates; the axial upper end of the deflection column is connected to the deflection adjusting mechanism capable of driving it to deflect around the axis of the deflection shaft.

[0007] According to a preferred embodiment, the top surface of the bottom plate is detachably connected to the rotating shaft of the ring trace drive motor; the axial lower end of the deflection column is connected to the milling rotary motor.

[0008] According to a preferred embodiment, the deflection adjusting mechanism includes a transverse guide groove, a drive screw, a deflection drive slider and a deflection drive motor, wherein the drive screw is rotatably inserted in the groove cavity of the transverse guide groove, and the deflection drive slider is threadedly sleeved on the drive screw and is limited in the movable direction by the transverse guide groove, one end of the drive screw penetrates through the groove end face of the transverse guide groove and is in transmission connection with the deflection drive motor installed outside the transverse guide groove.

[0009] According to a preferred embodiment, the top surface of the inverted lateral guide groove is hingedly connected to the bottom plate on one side; and the bottom surface of the deflection driving slider outside the groove cavity of the lateral guide groove is hingedly connected to the top end of the deflection column.

[0010] According to a preferred embodiment, a return spring capable of defining an initial relative position between the lateral guide groove and the bottom plate is further connected to the top surface of the lateral guide groove, and one end of the return spring is connected to the side surface of the bottom plate.

[0011] According to a preferred embodiment, the multi-position fastening and clamping assembly comprises a clamping driving motor, a guide positioning mechanism, a transmission central shaft screw, an elastic lifting mechanism, a clamping mechanism and an auxiliary positioning sleeve, wherein the clamping driving motor is connected to the second transmission shaft of the milling rotary motor, the transmission central shaft screw is connected to the first transmission shaft of the clamping driving motor, the guide positioning mechanism capable of defining the movement direction of the elastic lifting mechanism is connected to the side edge of the clamping driving motor, and the elastic lifting mechanism is sleeved on the transmission central shaft screw; a plurality of clamping mechanisms are hingedly connected to the lower end of the elastic lifting mechanism in a ring shape, and the clamping mechanisms are further rotationally connected with the guide positioning mechanism; and the auxiliary positioning sleeve capable of positioning the tool bit is further arranged at the axial lower end of the transmission central shaft screw.

[0012] According to a preferred embodiment, the first positioning connecting rods of the guide positioning mechanism are arranged in a ring shape at the side edge of the clamping driving motor, and the axial lower ends of the plurality of first positioning connecting rods are connected to a positioning guide disc; and a second positioning connecting rod is further arranged in a ring shape and at intervals on the outer side of the positioning guide disc.

[0013] According to a preferred embodiment, the guide sleeve of the elastic lifting mechanism is axially slidably arranged through the positioning guide disc, and the guide sleeve is threadedly sleeved on the transmission central shaft screw; and a circular plate is connected to the bottom end of the guide sleeve through a protection spring.

[0014] According to a preferred embodiment, the first deflection strip of the clamping mechanism is hingedly connected to the side edge of the circular plate, one end of the first deflection strip away from the circular plate is hingedly connected with a second deflection arc strip, and the second deflection arc strip is rotationally connected to the second positioning connecting rod in a manner of positioning the deflection center thereof; and a positioning block capable of abutting against the tool bit is further arranged at one end of the second deflection arc strip away from the first deflection strip.

[0015] The utility model discloses the beneficial effect is:

[0016] The multi-position fastening and clamping assembly provided by the application can effectively protect the stability and integrity of the clamping structure, avoid damage to the clamping structure due to excessive clamping driving during long-term use, and ensure the strength and stability of the clamping structure during long-term clamping. The milling cutter can be driven to deflect under the driving and limiting of the high-precision deflection assembly, so as to facilitate the machining of inclined holes, inclined grooves and inclined annular cavities, improve the machinable range of the milling cutter and the machining capacity of complex surface profiles of aviation parts. Compared with a conventional end mill, the high-precision deflection assembly can expand the machining range of the milling cutter while ensuring high-precision and high-stability inclined deflection adjustment of the milling cutter, so that the inclined posture milling cutter can complete the machining of special-shaped holes and grooves more stably and with less deflection, greatly improving the use range, stability, precision and machining quality of the milling cutter.

[0017] The elastic lifting mechanism provided by the application can offset the excessive upward pulling action by elastic stretching when the pulling force provided by the elastic lifting mechanism reaches a certain threshold, so as to avoid deformation or other damage of the clamping mechanism due to excessive stretching of the deflection amount, and to protect the elastic lifting mechanism and the clamping mechanism by elastic buffering, thereby improving the stability and impact resistance of the structure. The clamping drive motor, transmission shaft screw and elastic lifting mechanism can cooperate with each other to realize lifting and adjusting in smaller units, so that the unit force and unit deflection amount of the deflection and clamping driving of the clamping mechanism can be more finely controlled, thereby improving the control precision and strength of clamping and ensuring the stability and clamping stability of the entire clamping structure.

[0018] The threaded screw type deflection driving structure formed by the deflection adjusting mechanism provided by the application reduces the driving gap amount, thereby reducing the deflection amount generated during milling, improving the machining precision and quality, and having high structural strength, so that the stability of the inclined posture is high, thereby effectively avoiding the work position shift and shaking during milling of high-hardness materials such as aviation aluminum alloy, reducing the tool position deflection amount during machining, and improving the machining precision. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a preferred structure schematic view of a novel milling cutter according to the present application;

[0020] Figure 2 is a structure schematic view of the novel milling cutter according to the present application when deflection occurs;

[0021] Figure 3 is a structure schematic view of a multi-position fastening and clamping assembly of part A of the novel milling cutter according to the present application;

[0022] Figure 4 It is a preferred novel milling cutter A part of the deflection adjusting mechanism structure schematic view.

[0023] List of reference signs

[0024] 1: tool head; 2: multi-position fastening and clamping assembly; 3: milling rotation motor; 4: high-precision deflection assembly; 5: ring trace driving motor; 6: auxiliary positioning sleeve; 21: clamping driving motor; 22: guiding positioning mechanism; 23: transmission central shaft screw; 24: elastic lifting mechanism; 25: clamping mechanism; 211: first transmission shaft; 221: first positioning connecting rod; 222: positioning guide disc; 223: second positioning connecting rod; 241: guide sleeve; 242: protection spring; 243: circular ring plate; 251: first deflection strip; 252: second deflection arc strip; 253: positioning block; 31: second transmission shaft; 41: bottom plate; 42: first connecting rod; 43: alignment vertical plate; 44: deflection shaft; 45: deflection upright column; 46: deflection adjusting mechanism; 461: transverse guide groove; 462: driving screw; 463: deflection driving sliding block; 464: deflection driving motor; 465: reset spring. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the present application will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0026] The technical solutions provided by the present application will be described in detail below with reference to the drawings by way of embodiments. It should be noted that the description of these embodiments is used to help understand the present application, and does not constitute a limitation on the present application. In some examples, since some embodiments belong to prior art or conventional technology, they are not described or not described in detail.

[0027] In addition, the technical features described in this paper, or the steps in all the disclosed methods or processes, can be combined in any suitable way in one or more embodiments, except for mutually exclusive features and / or steps. Those skilled in the art will easily understand that the order of steps or operations of the methods related to the embodiments provided herein can also be changed. Any order in the drawings and embodiments is only used for illustration and does not imply a requirement for a certain order, unless explicitly stated.

[0028] The serial numbers of components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" in this application include direct and indirect connection (coupling) under reasonable circumstances (without self-contradiction).

[0029] The detailed description is made below with reference to the accompanying drawings.

[0030] Embodiment 1

[0031] The application provides a new type of milling cutter, which comprises a cutter head 1, a multi-position fastening and clamping assembly 2, a milling rotary motor 3, a high-precision deflection assembly 4, a ring trace driving motor 5 and an auxiliary positioning sleeve 6.

[0032] According to Figures 1-4 In the specific embodiment shown, the cutter head 1 can be replaceably assembled with the multi-position fastening and clamping assembly 2 according to the milling requirements and use conditions. The cutter head 1 is connected with the second transmission shaft 31 of the milling rotary motor 3 through the multi-position fastening and clamping assembly 2 which can protectively clamp the cutter head 1. The milling rotary motor 3 is installed on the moving end of the high-precision deflection assembly 4 which can drive the deflection and tilting movement of the milling rotary motor 3 away from the axial upper end of the multi-position fastening and clamping assembly 2. The top end of the high-precision deflection assembly 4 is connected with the ring trace driving motor 5 which can drive the ring trace rotation of the high-precision deflection assembly 4 in the tilting state. The axial upper end of the ring trace driving motor 5 is connected with the auxiliary positioning sleeve 6. The multi-position fastening and clamping assembly 2 provided in the application can effectively protect the stability and integrity of the clamping structure by buffering the excessive clamping driving force through the construction of the elastic structure which can be elastically stretched and contracted while ensuring the clamping driving precision, thereby avoiding the damage of the clamping structure due to excessive clamping driving during long-term use and ensuring the strength and stability of the clamping structure during long-term clamping. The milling cutter provided in the application can drive the cutter head 1 to deflect under the driving limit of the high-precision deflection assembly 4, thereby facilitating the machining of inclined holes, inclined grooves and inclined ring cavities by the milling cutter, improving the machinable range of the milling cutter and the machining capacity of complex surface profiles of aviation parts. Compared with the conventional end mill, the setting of the high-precision deflection assembly 4 expands the machining range of the milling cutter while ensuring the high-precision and high-stability tilting deflection adjustment of the milling cutter, so that the milling cutter in the tilting posture can complete the machining of special-shaped holes and grooves with more stability and less deflection amount, greatly improving the use range, stability, precision and machining quality of the milling cutter.

[0033] Preferably, the multi-position fastening and clamping assembly 2 comprises a clamping drive motor 21, a guide positioning mechanism 22, a transmission middle shaft screw 23, an elastic lifting mechanism 24 and a clamping mechanism 25. Preferably, the clamping drive motor 21 is connected to the second transmission shaft 31 of the milling rotary motor 3. Further preferably, the transmission middle shaft screw 23 is connected to the first transmission shaft 211 of the clamping drive motor 21. Preferably, the guide positioning mechanism 22 is connected to the side of the clamping drive motor 21, which can define the movement direction of the elastic lifting mechanism 24. Preferably, the elastic lifting mechanism 24 is sleeved on the transmission middle shaft screw 23, so that the rotation of the transmission middle shaft screw 23 drives the axial lifting of the elastic lifting mechanism 24. Preferably, a plurality of clamping mechanisms 25 are annularly and interval ly hinged to the lower end of the elastic lifting mechanism 24. Preferably, the clamping mechanism 25 is also rotationally connected with the guide positioning mechanism 22, thereby defining the deflection center of the clamping mechanism 25. Preferably, the axial lower end of the transmission middle shaft screw 23 is also provided with an auxiliary positioning sleeve 6 capable of inserting and positioning the tool head 1. The clamping drive motor 21 provided in the application can drive the rotation of the transmission middle shaft screw 23, so that the elastic lifting mechanism 24 threaded on the transmission middle shaft screw 23 can be axially lifted with high precision under the condition that the guide positioning mechanism 22 defines its movement direction, so that the elastic lifting mechanism 24 can pull and drive the clamping mechanism 25 to deflect, so that the plurality of clamping mechanisms 25 arranged annularly and interval ly can position the connection state and relative position of the tool head 1 through the way of alignment clamping. The elastic lifting mechanism 24 provided in the application can offset the pulling effect of its excessive upward movement through the way of elastic stretching when the pulling force provided by the elastic lifting mechanism 24 reaches a certain threshold, so as to avoid the deformation or other damage of the clamping mechanism 25 caused by the stretching beyond its deflectable amount, so as to elastically buffer and protect the elastic lifting mechanism 24 and the clamping mechanism 25, and improve the stability and impact resistance of the structure. The clamping drive motor 21, the transmission middle shaft screw 23 and the elastic lifting mechanism 24 provided in the application can cooperatively realize the lifting and moving adjustment of smaller unit amount, so that the unit force and unit deflection amount of the deflection clamping drive of the clamping mechanism 25 can be more refined, thereby improving the control precision and strength of clamping, ensuring the stability and clamping stability of the whole clamping structure, and avoiding the damage of the tool head 1 caused by excessive or insufficient unit clamping force or the inability to ensure stable clamping. The clamping mechanism 25 provided in the application improves the multidirectionality and alignment stability of clamping force through the way of annular and interval arrangement of multiple groups, thereby ensuring the strength and stability of clamping.

[0034] The first positioning link 221 of the guide positioning mechanism 22 is preferably arranged around the side of the clamping driving motor 21. The axial lower end of the plurality of first positioning links 221 is preferably connected to the positioning guide disc 222, and the center of the surface of the positioning guide disc 222 is slidably provided with the elastic lifting mechanism 24. The second positioning link 223 corresponding to the clamping mechanism 25 is preferably arranged around the outer side of the positioning guide disc 222, and the axial lower end of the second positioning link 223 is rotationally connected to the clamping mechanism 25. The positioning guide disc 222 provided in the present application can limit the movement direction of the elastic lifting mechanism 24, so that the elastic lifting mechanism 24 can only move axially under the rotation driving of the transmission central shaft screw 23, so that the claw body clamping structure composed of the plurality of clamping mechanisms 25 can effectively limit the connection state and position of the tool bit 1 in a closed manner.

[0035] The guide sleeve 241 of the elastic lifting mechanism 24 is preferably axially slidably provided in the positioning guide disc 222. Further preferably, the guide sleeve 241 is threadedly sleeved on the transmission central shaft screw 23. Specifically, the guide sleeve 241 can be a pipe body with an outer square and an inner circle, or a circular pipe provided with a vertical guide plate on the outer side, so that the guide sleeve 241 is fitted and inserted in the positioning guide disc 222, so as to limit the movement direction of the guide sleeve 241 to axial lifting only by the positioning guide disc 222, and the guide sleeve 241 can synchronously move up and down during the rotation of the transmission central shaft screw 23. The bottom end of the guide sleeve 241 is preferably connected with a circular ring plate 243 through a protection spring 242. The protection spring 242 provided in the present application can compensate for the pulling displacement driving when the guide sleeve 241 rises by elongating the spring body when the clamping mechanism 25 cannot follow the elastic lifting mechanism 24 to deflect and stretch, so as to avoid damage or undesirable deformation of the clamping mechanism 25 under rigid driving, thereby ensuring the effectiveness of the threaded transmission between the guide sleeve 241 and the transmission central shaft screw 23, avoiding hard limiting impact and causing thread slipping, and causing the threaded transmission structure to fail.

[0036] Preferably, the first deflection strip 251 of the clamping mechanism 25 is hinged at the side edge of the circular ring plate 243. Preferably, the end of the first deflection strip 251 away from the circular ring plate 243 is hinged with the second deflection arc strip 252. Specifically, the second deflection arc strip 252 is rotationally connected to the second positioning connecting rod 223 in a manner of positioning the deflection center thereof. Preferably, the end of the second deflection arc strip 252 away from the first deflection strip 251 is further provided with a positioning block 253 capable of abutting against the tool head 1. Preferably, the four clamping mechanisms 25 are arranged at the side edge of the circular ring plate 243 at equal intervals in a ring shape, so that the clamping mechanisms 25 form two sets of alignment clamping structures in a manner of two by two, so as to effectively align and clamp and position the tool head 1. The first deflection strip 251 provided in the application is lifted under the pulling of the elastic lifting mechanism 24, so that it can drive the second deflection arc strip 252 hinged at the other end thereof to perform a deflection movement around the position rotationally connected with the second positioning connecting rod 223, so that the positioning block 253 moves towards or away from, thereby aligning and clamping and positioning the tool head 1 in the process of moving towards.

[0037] Preferably, the high-precision deflection assembly 4 comprises a bottom plate 41, first connecting rods 42, alignment vertical plates 43, a deflection shaft 44, a deflection column 45 and a deflection adjusting mechanism 46. Preferably, the lower surface of the bottom plate 41 supports two sets of first connecting rods 42, so that the two alignment vertical plates 43 connected at the axial lower ends of the two sets of first connecting rods 42 are suspended in parallel. Preferably, the deflection column 45 is relatively rotationally connected with the deflection shaft 44 inserted on the plate body between the two alignment vertical plates 43. Preferably, the axial upper end of the deflection column 45 is connected with the deflection adjusting mechanism 46 capable of driving it to deflect around the axis of the deflection shaft 44. Preferably, the top surface of the bottom plate 41 is detachably connected to the rotating shaft of the ring trace driving motor 5. Preferably, the axial lower end of the deflection column 45 is connected with the milling rotary motor 3. The deflection adjusting mechanism 46 provided in the application can drive the deflection column 45 to rotate around the axis of the deflection shaft 44, so that the inclination angle of the tool head 1 can be accurately adjusted, so as to process inclined holes and inclined grooves with different inclination amplitudes according to requirements, greatly improving the machining range and machining capacity of the milling cutter. The threaded screw type deflection driving structure formed by the deflection adjusting mechanism 46 reduces the driving gap amount, thereby reducing the deflection amount generated in the milling process, thereby improving the machining precision and quality, and the structure has high strength, so that the stability of the inclined posture positioned thereby is high, so as to effectively avoid the work position deviation and shaking during the milling of high-hardness materials such as aviation aluminum alloy, thereby reducing the tool position deflection amount in the machining process and improving the machining precision.

[0038] Preferably, the deflection adjusting mechanism 46 comprises a transverse guide slot 461, a driving screw 462, a deflection driving slider 463, a deflection driving motor 464 and a reset spring 465. Preferably, the driving screw 462 is rotatably inserted in the slot cavity of the transverse guide slot 461. Preferably, the deflection driving slider 463 is threadedly sleeved on the driving screw 462 and is defined a movable direction by the transverse guide slot 461. Further preferably, one end of the driving screw 462 penetrates through the slot end face of the transverse guide slot 461 and is drivingly connected with the deflection driving motor 464 installed outside the transverse guide slot 461. Preferably, the reset spring 465 is further connected on the top face of the transverse guide slot 461 and is capable of defining an initial relative position between the transverse guide slot 461 and the base plate 41. Specifically, one end of the reset spring 465 away from the transverse guide slot 461 is connected on the side face of the base plate 41. Preferably, the top face of the inverted transverse guide slot 461 is hingedly connected on the base plate 41 to define a connection state that the transverse guide slot 461 is capable of rotating around the connection position between the transverse guide slot 461 and the base plate 41. Preferably, the bottom face of the deflection driving slider 463 outside the slot cavity of the transverse guide slot 461 is hingedly connected with the top end of the deflection column 45 to define a connection state that the deflection column 45 is capable of deflecting around the position hingedly connected with the deflection driving slider 463 to change the included angle between the deflection column 45 and the transverse guide slot 461, thereby realizing the adjustment of the deflection angle of the deflection column 45. The transverse guide slot 461, the driving screw 462, the deflection driving slider 463 and the deflection driving motor 464 provided in the application are capable of realizing the high-precision and high-stable translation of the deflection driving slider 463, thereby enabling the deflection column 45 hingedly connected with the deflection driving slider 463 to have high-precision and high-stable deflection in the process of following the movement of the deflection driving slider 463, so as to ensure the accuracy of the deflection angle and the stability of the tilting state.

[0039] Preferably, the ring trace driving motor 5 is detachably connected on the lifting mounting port of the milling machine machining center, so as to adjust the working height of the milling cutter in the vertical working posture according to the requirement. In addition, the milling machine machining center is capable of driving the workpiece or the milling cutter to translate, so as to mill the different point positions of the workpiece.

[0040] Preferably, the auxiliary positioning sleeve 6 is rotatably connected with the dynamic shaft screw 23 through a rotating bearing. Preferably, the outer side of the auxiliary positioning sleeve 6 is further provided with a transverse positioning link connected with the second positioning link 223. Preferably, the opening end of the auxiliary positioning sleeve 6 is provided in a converging port form to correct the rod body insertion position of the tool head 1, so that the rod body of the tool head 1 can be centrally inserted into the standard cylinder cavity of the auxiliary positioning sleeve 6 which is matched with the size of the cross section. Further preferably, the cylinder cavity of the auxiliary positioning sleeve 6 is further provided with elastic blocks which are capable of pre-clamping the rod body of the tool head 1 and are arranged in a ring direction. The converging port provided in the application can conveniently correct the insertion position of the tool head 1 and realize the central insertion of the tool head 1.

[0041] The utility model is not limited to the above optional implementation, anyone under the enlightenment of the utility model can derive other various forms of products, but no matter make any change in its shape or structure, all the technical schemes falling into the scope defined by the claims of the utility model are within the protection scope of the utility model. The utility model specification and its drawings should be understood as illustrative and not as limiting the claims. The protection scope of the utility model is defined by the claims and its equivalents. In the full text, the features guided by "preferably" are only optional ways and should not be understood as necessarily setting, therefore the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A novel milling cutter, comprising a tool head (1) capable of being replaced according to the milling requirements and use, characterized in that, the tool head (1) is connected with the second transmission shaft (31) of a milling rotary motor (3) through a multi-position fastening clamping assembly (2) capable of protective clamping thereof; the milling rotary motor (3) is installed on the moving end of a high-precision deflection assembly (4) capable of driving it to occur deflection tilting movement away from the axial upper end of the multi-position fastening clamping assembly (2); the top end of the high-precision deflection assembly (4) is connected with a loop track driving motor (5) capable of driving the high-precision deflection assembly (4) to occur loop track rotation in a tilting state, and the axial upper end of the loop track driving motor (5) is connected with an auxiliary positioning sleeve (6).

2. The novel milling cutter as claimed in claim 1, wherein, the high-precision deflection assembly (4) comprises a bottom plate (41), a first connecting rod (42), a positioning vertical plate (43), a deflection shaft (44), a deflection column (45) and a deflection adjusting mechanism (46), wherein, the lower surface of the bottom plate (41) supports two groups of the first connecting rods (42), so that two positioning vertical plates (43) connected at the axial lower ends of the two groups of the first connecting rods (42) are suspended in parallel; the deflection column (45) is relatively rotatably connected between the two positioning vertical plates (43) through the deflection shaft (44) inserted on the plate body; the axial upper end of the deflection column (45) is connected with the deflection adjusting mechanism (46) capable of driving it to deflect around the axis of the deflection shaft (44).

3. The novel milling cutter as claimed in claim 2, wherein, the top surface of the bottom plate (41) is detachably connected on the rotating shaft of the loop track driving motor (5); the axial lower end of the deflection column (45) is connected with the milling rotary motor (3).

4. The novel milling cutter as claimed in claim 3, wherein, the deflection adjusting mechanism (46) comprises a transverse guide groove (461), a driving screw (462), a deflection driving slider (463) and a deflection driving motor (464), wherein, the driving screw (462) is rotatably inserted in the groove cavity of the transverse guide groove (461), and the deflection driving slider (463) is threadedly sleeved on the driving screw (462) and is limited in the movable direction by the transverse guide groove (461), one end of the driving screw (462) penetrates through the groove end face of the transverse guide groove (461) and is in transmission connection with the deflection driving motor (464) installed outside the transverse guide groove (461).

5. The novel milling cutter as claimed in claim 4, wherein, the top surface of the inverted transverse guide groove (461) is hinged on one side of the bottom plate (41); the bottom surface of the deflection driving slider (463) outside the groove cavity of the transverse guide groove (461) is hinged with the top end of the deflection column (45).

6. The novel milling cutter as claimed in claim 5, wherein, a reset spring (465) capable of limiting the initial relative position between the transverse guide groove (461) and the bottom plate (41) is further connected on the top surface of the transverse guide groove (461), and one end of the reset spring (465) away from the transverse guide groove (461) is connected on the side surface of the bottom plate (41).

7. The novel milling cutter as claimed in claim 6, wherein, The multi-position fastening and clamping assembly (2) comprises a clamping drive motor (21), a guide positioning mechanism (22), a transmission middle shaft screw rod (23), an elastic lifting mechanism (24) and a clamping mechanism (25), wherein, The clamping drive motor (21) is connected to the second transmission shaft (31) of the milling rotary motor (3), and the transmission middle shaft screw rod (23) is connected to the first transmission shaft (211) of the clamping drive motor (21), The guide positioning mechanism (22) capable of limiting the movement direction of the elastic lifting mechanism (24) is connected to the side of the clamping drive motor (21), and the elastic lifting mechanism (24) is sleeved on the transmission middle shaft screw rod (23); The lower end of the elastic lifting mechanism (24) is annularly and interval hinged with a plurality of clamping mechanisms (25), and the clamping mechanism (25) is further rotationally connected with the guide positioning mechanism (22); The axial lower end of the transmission middle shaft screw rod (23) is further provided with the auxiliary positioning sleeve (6) capable of sleeving and positioning the tool bit (1).

8. The novel milling cutter as claimed in claim 7, wherein, The first positioning connecting rod (221) of the guide positioning mechanism (22) is annularly arranged on the side of the clamping drive motor (21), and the axial lower end of the plurality of first positioning connecting rods (221) is connected to the positioning guide disc (222); The second positioning connecting rod (223) is further annularly and interval arranged on the outer side of the positioning guide disc (222).

9. The novel milling cutter as claimed in claim 8, wherein, The guide sleeve (241) of the elastic lifting mechanism (24) is axially slidably arranged on the positioning guide disc (222), and the guide sleeve (241) is threadedly sleeved on the transmission middle shaft screw rod (23); The bottom end of the guide sleeve (241) is connected with the circular plate (243) through the protection spring (242).

10. The novel milling cutter as claimed in claim 9, wherein, The first deflection strip (251) of the clamping mechanism (25) is hinged to the side edge of the circular plate (243), The end of the first deflection strip (251) away from the circular plate (243) is hinged with the second deflection arc strip (252), and the second deflection arc strip (252) is rotationally connected to the second positioning connecting rod (223) in a manner of positioning the deflection center thereof; The end of the second deflection arc strip (252) away from the first deflection strip (251) is further provided with the positioning block (253) capable of abutting against the tool bit (1).

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