Milling machine force milling cutter head based on wedge fastening detachable structure

Abstract

The application relates to the technical field of milling cutter heads and discloses a strong milling cutter head of a milling machine based on a wedge fastening detachable structure, which comprises a cutter handle, a clamping nut in threaded connection with the cutter handle, a spring chuck for mounting a milling cutter, and a mounting seat arranged in the clamping nut, wherein the mounting seat is provided with a guide piece, the guide piece comprises two groups of sliding groove groups, each group of sliding groove groups comprises a plurality of guide grooves, a guide block is slidably arranged in the guide grooves, and the guide block is connected with the outer wall of the spring chuck. The strong milling cutter head of the milling machine based on the wedge fastening detachable structure can effectively solve the problem that, in the clamping process of the spring chuck and the clamping nut, the experience and concentration of the operator are required to be high, misalignment is caused due to improper manual operation, the installation efficiency is affected, and the spring chuck and the clamping nut shake, and finally the milling cutter is not stably installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of milling cutter head, in particular to a milling machine strong milling cutter head based on wedge locking detachable structure. BACKGROUND

[0002] The milling cutter head is a core functional component for milling machining in numerical control machine tools, machining centers and other equipment, and is usually composed of a tool holder, a clamping nut, a spring chuck and a milling cutter, and the assembly quality directly relates to the clamping accuracy, rigidity and stability of the milling process of the milling cutter.

[0003] In the prior art, the assembly process of the above-mentioned milling cutter head usually follows the following steps: first, the operator needs to achieve the engagement of the spring chuck and the clamping nut, second, the milling cutter to be machined is inserted into the preliminarily assembled spring chuck, and finally, the assembly of the spring chuck and the milling cutter is screwed into the tool holder, and the clamping nut is tightened to press the spring chuck by the taper surface, and finally the reliable clamping of the milling cutter is realized.

[0004] However, although the above-mentioned installation method of the milling cutter head is common, it still has disadvantages in actual application. In the process of achieving the engagement of the spring chuck and the clamping nut, the operator must carefully find the relative position of the clamping groove on the spring chuck and the corresponding structure inside the clamping nut and adjust it to be clamped. This process requires higher experience and concentration of the operator, and is prone to misalignment due to visual error or improper manual operation, which not only seriously affects the installation efficiency, but also causes the spring chuck and the clamping nut to shake, finally leading to unstable installation of the subsequent milling cutter. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a milling machine strong milling cutter head based on wedge locking detachable structure, which can effectively solve the problem that in the process of achieving the engagement of the spring chuck and the clamping nut, the operator must carefully find the relative position of the clamping groove on the spring chuck and the corresponding structure inside the clamping nut and adjust it to be clamped. This process requires higher experience and concentration of the operator, and is prone to misalignment due to visual error or improper manual operation, which not only seriously affects the installation efficiency, but also causes the spring chuck and the clamping nut to shake, finally leading to unstable installation of the subsequent milling cutter.

[0006] To achieve the above-mentioned purposes, the present application is realized by the following technical scheme:

[0007] The present application provides a milling machine strong milling cutter head based on wedge locking detachable structure, comprising:

[0008] The tool holder is provided with a clamping nut with threaded grooves on the inner and outer walls by thread connection;

[0009] The spring chuck is provided with a milling cutter at the center position of the spring chuck;

[0010] The inside of the clamping nut is provided with a mounting seat, and the mounting seat is provided with a guide piece for limiting the installation of the spring chuck.

[0011] The inner wall of the tool holder is wedge-shaped, that is, the diameter of the inner wall of the tool holder gradually increases from top to bottom, and the inside of the tool holder is provided with a pressing group for assisting the wedge-shaped inner wall to press the outer wall of the spring chuck.

[0012] The guide piece includes two groups of sliding groove groups opened in the circumferential inner wall of the mounting seat in the upward and downward directions, each group of sliding groove groups includes a plurality of guide grooves distributed in the circumferential direction, the two guide grooves opposite in position are connected, and a guide block with a magnet at one end is slidably arranged in the guide groove, and the plurality of guide blocks are connected with the outer wall of the spring chuck.

[0013] Further, the circumferential inner wall of the mounting seat at the lower end is provided in a slope shape, that is, the diameter gradually decreases from top to bottom, and the mounting seat is also provided with a matching groove group.

[0014] Further, the matching groove group includes an annular groove opened on the upper end surface of the mounting seat and a plurality of sliding grooves opened in the inner wall of the mounting seat in the circumferential direction, and a supporting plate is arranged in the plurality of sliding grooves through a compression spring.

[0015] Further, during the installation process of the spring chuck, the guide block is driven to realize the installation and locking work of the spring chuck with the clamping nut by means of downward pressing, rotation and then continuous downward pressing.

[0016] Further, the end of the tool holder close to the clamping nut is provided with a pressing plate with a chamfered inner wall at a position corresponding to the plurality of supporting plates, and the outer wall of the tool holder is also slidably provided with a locking nut with a threaded groove opened in the circumferential inner wall.

[0017] Further, in the initial state, the locking nut is located away from the pressing plate.

[0018] Further, the pressing group includes a mounting groove opened in the circumferential outer wall of the tool holder in the circumferential direction, and a plurality of mounting grooves are arranged in the mounting groove, and each mounting groove is provided with an auxiliary piece for further pressing and limiting the spring chuck.

[0019] Further, the auxiliary piece includes a supporting plate slidably arranged in the mounting groove, the upper and lower end surfaces of the supporting plate are connected with the inner wall of the mounting groove through a return spring, and the end of the supporting plate towards the center of the tool holder is provided with a pressing block in contact with the outer wall of the spring chuck.

[0020] Further, the inner support includes a base shell connected with the tool shank, and the inner part of the base shell is provided with a plurality of execution groups in the circumferential direction, each execution group including a tension spring and a shoe, both ends of the tension spring being connected with the shoe and the base shell respectively, and the end of the shoe away from the center of the base shell being in contact with the inner wall of the clamping nut.

[0021] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0022] The spring collet enters the inside of the clamping nut through the guide blocks arranged on the outer wall thereof, and after the guide blocks drive the spring collet to move to the inside of the uppermost guide groove, the spring collet is rotated according to the opening direction of the guide groove. Since the outer wall of the spring collet is in close contact with the inner wall of the mounting seat, the spring collet will not be separated from the mounting seat during the rotation. When the spring collet is rotated to the position where the upper and lower guide grooves are connected, the spring collet is pressed downward, and the four guide blocks are driven by the spring collet to move to the inside of the lower guide groove. Finally, the spring collet is continuously rotated, the guide blocks are in close contact with the inner wall of the lower guide groove during the rotation, and finally the guide blocks are magnetically connected with the inner wall of the corresponding guide groove through the magnets arranged on the outer wall thereof. Through the simple rotation and pressing operation, the installation of the spring collet and the clamping nut can be realized. The operator only needs to align the guide blocks with the guide grooves at the beginning. Through this way, the installation process of the spring collet and the clamping nut is optimized, and the installation efficiency of the spring collet and the clamping nut is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creating labor.

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the embodiment of the present application;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of the mounting seat and the milling cutter of the embodiment of the present application;

[0026] Figure 3 It is a three-dimensional structure schematic diagram of the clamping nut, the mounting seat and the spring collet of the embodiment of the present application;

[0027] Figure 4 It is a three-dimensional structure schematic diagram of the mounting seat and the supporting plate of the embodiment of the present application;

[0028] Figure 5 It is a plane structure schematic diagram of the mounting seat and the guide groove of the embodiment of the present application;

[0029] Figure 6 The structure diagram of the embodiment of the application is separated from the locking nut in three dimensions;

[0030] Figure 7 The structure diagram of the embodiment of the application is separated from the auxiliary part in three dimensions;

[0031] Figure 8 The structure diagram of the embodiment of the application is separated from the inner supporting part in three dimensions.

[0032] The reference numerals in the figure represent: 1, the shank; 11, the abutting group; 111, the mounting groove; 112, the auxiliary part; 1121, the bearing plate; 1122, the abutting block; 113, the inner supporting part; 1131, the base shell; 1132, the hoof block; 1133, the tension spring; 12, the pressing plate; 13, the locking nut; 2, the clamping nut; 21, the mounting seat; 211, the guide part; 2111, the guide groove; 2112, the guide block; 212, the annular groove; 213, the sliding groove; 214, the abutting plate; 3, the spring collet; 4, the milling cutter. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0034] The application will be further described below with reference to the embodiments.

[0035] Embodiment:

[0036] Please refer to Figure 1 - Figure 8 The application provides a technical scheme: a milling machine strong milling cutter head based on wedge block fastening detachable structure, comprising:

[0037] The shank 1 is provided with the clamping nut 2 with threaded grooves in the inner and outer walls through threaded connection;

[0038] The spring collet 3 is provided with the milling cutter 4 at the center position;

[0039] The clamping nut 2 is provided with the mounting seat 21, and the mounting seat 21 is provided with the guide part 211 for realizing the installation limit of the spring collet 3;

[0040] The inner wall of the tool handle 1 is wedge-shaped, that is, the diameter of the inner wall of the tool handle 1 gradually increases from top to bottom, and the inner part of the tool handle 1 is provided with a clamping group 11 for assisting the wedge-shaped inner wall to tightly clamp the outer wall of the spring collet 3;

[0041] The guide 211 comprises two groups of sliding grooves formed in the circumferential inner wall of the mounting seat 21 in the up-down direction, each group of sliding grooves comprises a plurality of guide grooves 2111 distributed in the circumferential direction, the two guide grooves 2111 opposite in position are connected, and a guide block 2112 with a magnet at one end is slidably arranged in the guide groove 2111, and the plurality of guide blocks 2112 are connected with the outer wall of the spring collet 3.

[0042] The circumferential inner wall of the mounting seat 21 at the lower end is provided in a slope shape, that is, the diameter gradually decreases from top to bottom, and a matching groove group is further formed on the mounting seat 21.

[0043] The matching groove group comprises an annular groove 212 formed on the upper end surface of the mounting seat 21 and a plurality of sliding grooves 213 formed in the inner wall of the mounting seat 21 in the circumferential direction, and a supporting plate 214 is arranged in the sliding groove 213 through a compression spring.

[0044] During the installation process of the spring collet 3, the guide block 2112 is driven to be installed and locked with the clamping nut 2 by the mode of pressing, rotating and then continuing to press.

[0045] The end of the tool handle 1 close to the clamping nut 2 is provided with a pressing plate 12 with a chamfered inner wall at the position corresponding to the plurality of supporting plates 214, and the outer wall of the tool handle 1 is further provided with a locking nut 13 with a threaded groove formed in the circumferential inner wall.

[0046] In the initial state, the locking nut 13 is located away from the pressing plate 12.

[0047] The clamping group 11 comprises a mounting groove 111 formed in the circumferential outer wall of the tool handle 1 in the circumferential direction, a plurality of auxiliary parts 112 for further clamping and limiting the spring collet 3 are arranged in the mounting groove 111, and an inner supporting part 113 for supporting the inner wall of the clamping nut 2 during the working process is further arranged above the auxiliary part 112 in the inner part of the tool handle 1.

[0048] The auxiliary part 112 comprises a supporting plate 1121 slidably arranged in the mounting groove 111, the upper and lower end surfaces of the supporting plate 1121 are connected with the inner wall of the mounting groove 111 through a return spring, and the end of the supporting plate 1121 towards the center of the tool handle 1 is provided with a resisting block 1122 in contact with the outer wall of the spring collet 3.

[0049] The inner support 113 comprises a base shell 1131 connected with the tool shank 1, and the inner part of the base shell 1131 is provided with a plurality of execution groups in the circumferential direction, each execution group comprising a tension spring 1133 and a shoe block 1132, both ends of the tension spring 1133 being connected with the shoe block 1132 and the base shell 1131 respectively, and the end of the shoe block 1132 away from the center of the base shell 1131 being in contact with the inner wall of the clamping nut 2.

[0050] In particular, in the working process, the installation of the spring chuck 3 and the clamping nut 2:

[0051] The operator needs to achieve the clamping of the spring chuck 3 and the clamping nut 2, then put the milling cutter 4 to be processed into the preliminarily assembled spring chuck 3, and finally rotate the assembly of the spring chuck 3 and the milling cutter 4 into the tool shank 1, and tighten the clamping nut 2 to press the spring chuck 3 by using the conical surface, so as to finally achieve the reliable clamping of the milling cutter 4.

[0052] However, although the above-mentioned installation mode of the milling cutter head is relatively common, it still has disadvantages in actual application. In the process of achieving the clamping of the spring chuck 3 and the clamping nut 2, the operator must carefully find the relative position of the clamping groove on the spring chuck 3 and the corresponding structure inside the clamping nut 2, and adjust and clamp them. This process requires higher experience and concentration of the operator, and is prone to misalignment due to visual error or improper manual operation, which not only seriously affects the installation efficiency, but also causes the spring chuck 3 and the clamping nut 2 to shake, and finally leads to unstable installation of the milling cutter 4. Based on this, the clamping nut 2 of the milling machine strong milling cutter head based on the wedge block fastening detachable structure is provided with a mounting seat 21, and the quick installation of the spring chuck 3 is achieved through the guide piece 211 provided on the mounting seat 21. Without the need for higher experience and concentration of the operator, the installation process is optimized, and the stability of the clamping nut 2 and the spring chuck 3 after installation is also ensured through the cooperation and contact of the mounting seat 21 and the spring chuck 3, which lays a foundation for the stable installation of the subsequent milling cutter 4.

[0053] Specifically, the circumferential inner wall of the mounting seat 21 is provided with a guide groove 2111, and the two opposite guide grooves 2111 are connected (the upper guide groove 2111 is also provided with a through groove, which facilitates the entry of the guide block 2112 in the initial state). When it is necessary to install the clamping nut 2 and the spring collet 3, first, the spring collet 3 is inserted into the clamping nut 2 along the position of the guide groove 2111, and then the installation of the spring collet 3 and the clamping nut 2 is realized by pressing, rotating, and then pressing again (the inner wall of the mounting seat 21 is provided with two groups of sliding grooves in the circumferential direction, each group of sliding grooves includes four guide grooves 2111, the spring collet 3 enters the clamping nut 2 through the guide block 2112 provided on the outer wall thereof, when the guide block 2112 drives the spring collet 3 to move to the uppermost guide groove 2111, it is rotated according to the direction in which the guide groove 2111 is provided, since the outer wall of the spring collet 3 is in close contact with the inner wall of the mounting seat 21, the spring collet 3 will not be separated from the mounting seat 21 during rotation, when the spring collet 3 is rotated to the position where the upper and lower guide grooves 2111 are connected, the spring collet 3 is pressed downward, and the four guide blocks 2112 are moved to the lower guide grooves 2111, and finally the spring collet 3 is continuously rotated, the guide block 2112 is in close contact with the inner wall of the lower guide groove 2111 after rotation, and finally the magnet provided on the outer wall thereof is magnetically connected with the inner wall of the corresponding guide groove 2111), through the simple rotating and pressing action, the installation of the spring collet 3 and the clamping nut 2 is realized, the operator only needs to align the guide block 2112 with the guide groove 2111 in the initial state, and through this way, the installation process of the spring collet 3 and the clamping nut 2 is optimized, and the installation efficiency of the spring collet 3 and the clamping nut 2 is improved.

[0054] In the assembly process of the milling cutter head, the assembly of the milling cutter 4 and the spring collet 3 is a crucial link. Usually, the shank 1 of the milling cutter 4 and the inner hole of the spring collet 3 are connected in a clearance fit. Due to the characteristics of the clearance fit, there is a small gap between the milling cutter 4 and the inner wall of the collet after the milling cutter 4 is inserted into the spring collet 3, so the initial state of the milling cutter 4 in the collet is not stable, and the operator needs to hold it by hand to ensure its stability in the subsequent installation steps. If there is no such artificial support, the milling cutter 4 is prone to shaking or even falling off during installation. Therefore, the milling cutter head with a wedge block clamping and detachable structure can simultaneously realize the auxiliary clamping of the milling cutter 4 during the rotating and pressing process of the spring collet 3.

[0055] Specifically, the two ends of the spring collet 3 can be deformed to a certain extent due to its structural characteristics. After the spring collet 3 enters the upper guide groove 2111, the operator inserts the milling cutter 4 to be machined into the spring collet 3 and adjusts the length to be extended. Then, the spring collet 3 is controlled to be pressed down, and the guide block 2112 enters the lower guide groove 2111 (the mounting seat 21 is arranged in a slope shape on the lower circumferential inner wall, that is, the diameter gradually decreases from top to bottom. When the spring collet 3 is not pressed down initially, its outer wall does not contact the inner wall of the mounting seat 21. When the spring collet 3 is pressed down, its outer wall deforms after contacting the inner wall of the mounting seat 21, and the spring collet 3 is synchronously contracted to reduce the gap between the spring collet 3 and the milling cutter 4, thereby improving the stability of the milling cutter 4 during installation without the assistance of the operator. With the rotation of the spring collet 3 after being pressed down, the guide block 2112 is magnetically connected with the inner wall of the guide groove 2111, and the preliminary clamping of the outer wall of the milling cutter 4 is finally completed.

[0056] Installation of the clamping nut 2 and the tool shank 1:

[0057] During the machining of large workpieces by milling, the milling cutter 4 often needs to be continuously operated for a long time to complete the machining task due to the large size of the workpiece and the large cutting allowance. This long-time and high-load working condition makes the connection strength of the clamping nut 2 and the tool shank 1 particularly important. The close fit between the wedge-shaped inner wall of the tool shank 1 and the spring collet 3 is the premise for ensuring the stable operation of the milling cutter 4. However, during actual high-speed milling, the milling cutter 4 not only bears a large centrifugal force, but also vibrates due to milling work and other factors, which easily causes the clamping nut 2 and the tool shank 1 connected only by threads to loosen. Based on this, the tool shank 1 of the strong milling cutter head of the milling machine based on the wedge block clamping and detachable structure is provided with a abutting group 11. Through the arrangement of the abutting group 11, the abutting area of the outer wall of the spring collet 3 during the installation of the tool shank 1 and the clamping nut 2 is increased, and further abutting of the inner wall of the clamping nut 2 can be realized according to the speed of the milling cutter 4.

[0058] Specifically, the upper end face of the mounting seat 21 is provided with an annular groove 212 and a sliding groove 213, and the sliding groove 213 is provided with a supporting plate 214 inside through a compression spring. When the clamping nut 2 is installed with the spring collet 3, first, the annular groove 212 on the mounting seat 21 is aligned with the position of the pressing plate 12, then the clamping nut 2 is clamped into the shank 1 along the pressing plate 12, and then the clamping nut 2 is rotated to be screwed with the shank 1, and during the movement of the clamping nut 2, the spring collet 3 inside the clamping nut 2 is tightly contacted with the wedge-shaped inner wall of the shank 1, and the upper and lower outer walls of the spring collet 3 are also tightly contacted with the abutting blocks 1122 and the supporting plates 214. Specifically, the side of the supporting plate 214 close to the annular groove 212 is provided with a chamfer, and during the movement of the mounting seat 21 following the clamping nut 2, the pressing plate 12 is in contact with the supporting plate 214 inside the sliding groove 213 first, and through the contact between the pressing plate 12 and the supporting plate 214, the supporting plates 214 are respectively slid along the sliding grooves 213, and after the locking work of the clamping nut 2 and the shank 1 is completed, the supporting plates 214 are completely stretched out and the end of the supporting plate 214 away from the pressing plate 12 is in contact with the outer wall of the spring collet 3, thereby realizing the tight contact of the lower end outer wall of the spring collet 3. The circumference of the shank 1 is provided with a plurality of installation grooves 111, and the installation grooves 111 are slidably provided with a supporting plate 1121 and an abutting block 1122 inside. During the movement of the clamping nut 2, the inner wall of the upper end of the clamping nut 2 synchronously pushes the abutting blocks 1122 along the installation grooves 111, and then the supporting plate 1121 is stretched under the driving of the abutting block 1122, and the side of the abutting block 1122 away from the clamping nut 2 is in contact with the outer wall of the spring collet 3, thereby realizing the tight contact of the upper end outer wall of the spring collet 3. Finally, the locking nut 13 is screwed into the clamping nut 2, and the further locking work of the clamping nut 2 is completed. Through the installation of the clamping nut 2 and the shank 1, the wedge-shaped inner wall of the shank 1 tightly contacts the outer wall of the spring collet 3, and the abutting blocks 1122 and the supporting plates 214 also tightly contact the outer wall of the spring collet 3 at different positions, thereby realizing the multi-point tight contact of the outer wall of the spring collet 3 through a single locking work. The continuity of the tight contact is improved, and the stability of the spring collet 3 and the milling cutter 4 installed inside the spring collet 3 is ensured during the subsequent long-time work.

[0059] The knife handle 1 drives the milling cutter 4 to rotate for a long time, and the further clamping work of the clamping nut 2 is realized through the pull spring 1133 and the shoe block 1132 arranged in the base shell 1131. Specifically, the clamping nut 2 is provided with a linkage groove corresponding to the position of the shoe block 1132. In the initial state, the shoe block 1132 is not in contact with the inner wall of the linkage groove due to the pulling force of the pull spring 1133 corresponding to the position. When the rotating speed increases, the centrifugal force is greater than the pulling force of the pull spring 1133, the shoe block 1132 overcomes the resistance of the pull spring 1133, and is thrown out to finally contact with the inner wall of the linkage groove, thereby realizing the clamping work of the clamping nut 2. Through the arrangement of the inner support 113, the problem that the clamping nut 2 is subjected to continuous vibration from the milling cutter 4 during high-speed rotation is avoided, thereby improving the stability of the milling cutter 4 and the clamping nut 2 during continuous work.

[0060] It should be noted that when the clamping nut 2 and the spring collet 3 need to be disassembled, the above steps are only reversed to complete the disassembly work of the plurality of parts.

[0061] It is worth emphasizing that the milling cutter head of the milling machine based on the wedge block clamping detachable structure mainly has the following advantages:

[0062] Advantage one, the spring collet 3 enters the inside of the clamping nut 2 through the guide block 2112 arranged on the outer wall thereof. When the guide block 2112 drives the spring collet 3 to move to the inside of the uppermost guide groove 2111, the spring collet 3 is rotated according to the opening direction of the guide groove 2111. Since the outer wall of the spring collet 3 is in contact with the inner wall of the mounting seat 21, the spring collet 3 will not be separated from the mounting seat 21 during rotation. When the spring collet 3 is rotated to the communication position of the upper and lower guide grooves 2111, the spring collet 3 is pressed downward, and the four guide blocks 2112 are moved to the inside of the lower guide groove 2111. Finally, the spring collet 3 is continuously rotated, the guide block 2112 is in contact with the inner wall of the lower guide groove 2111 after rotation, and is finally magnetically connected with the inner wall of the guide groove 2111 at the corresponding position through the magnet arranged on the outer wall thereof. Through the simple rotating and pressing action, the installation work of the spring collet 3 and the clamping nut 2 is realized. The operator only needs to align the guide block 2112 with the guide groove 2111 in the initial state. Through this way, the installation process of the spring collet 3 and the clamping nut 2 is optimized, and the installation efficiency of the spring collet 3 and the clamping nut 2 is improved.

[0063] The second advantage is that the installation seat 21 is arranged in a slope shape on the lower end of the circumferential inner wall, that is, the diameter gradually decreases from top to bottom, and the outer wall of the initial spring collet 3 is not in contact with the inner wall of the installation seat 21 in a slope shape when the initial spring collet 3 is not pressed down. When the spring collet 3 is pressed down, the outer wall of the spring collet 3 is deformed after being in contact with the inner wall of the installation seat 21, and the spring collet 3 is simultaneously contracted, thereby reducing the gap between the spring collet 3 and the milling cutter 4. Without the assistance of the operator, the stability of the milling cutter 4 in the installation work is improved. With the rotation of the spring collet 3 after being pressed down, the guide block 2112 is magnetically connected with the inner wall of the guide groove 2111, and the preliminary clamping work of the outer wall of the milling cutter 4 is finally completed. In this way, the operator's intervention is reduced, and the stability in the subsequent installation steps is ensured, and the problem of shaking or even falling of the milling cutter 4 during the installation process due to vibration is avoided.

[0064] The third advantage is that the chamfer is arranged on the side of the supporting plate 214 close to the annular groove 212. During the movement of the installation seat 21 along with the clamping nut 2, the pressing plate 12 is in contact with the supporting plate 214 in the sliding groove 213, and the contact between the pressing plate 12 and the supporting plate 214 makes the supporting plates 214 slide along the respective sliding grooves 213, and after the locking work of the clamping nut 2 and the tool shank 1 is completed, the supporting plates 214 are completely extended, and the end of the supporting plate 214 away from the pressing plate 12 is in contact with the outer wall of the spring collet 3, thereby realizing the clamping work of the outer wall of the lower end of the spring collet 3. During the movement of the clamping nut 2, the inner wall of the upper end of the clamping nut 2 pushes the supporting plates 214 along the installation groove 111, and the side of the supporting plate 214 away from the clamping nut 2 is in contact with the outer wall of the spring collet 3, thereby realizing the clamping work of the outer wall of the upper end of the spring collet 3. Through the installation work of the clamping nut 2 and the tool shank 1, the wedge-shaped inner wall of the tool shank 1 realizes the clamping work of the outer wall of the spring collet 3, and the supporting plates 214 and the supporting plates 214 simultaneously realize the further clamping work of the outer wall of the spring collet 3 at different positions. Through a single locking work, the multi-point clamping work of the outer wall of the spring collet 3 is completed, which improves the continuity of the clamping work, and the multi-point clamping mode ensures the stability of the spring collet 3 and the milling cutter 4 installed therein during the subsequent long-time work.

[0065] The fourth advantage is that the plurality of shoe blocks 1132 are not in contact with the inner wall of the linkage groove due to the pulling force of the corresponding position pulling spring 1133. When the rotating speed increases and the centrifugal force is greater than the pulling force of the pulling spring 1133, the shoe block 1132 overcomes the resistance of the pulling spring 1133 and is thrown outward to finally contact the inner wall of the linkage groove, thereby realizing the abutting work with the clamping nut 2. Through the arrangement of the inner support 113, the problem of reduced connection strength caused by the continuous vibration of the clamping nut 2 from the milling cutter 4 at high speed is avoided, thereby further improving the stability of the milling cutter 4 and the clamping nut 2 during continuous work.

[0066] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents. Such modifications or replacements do not change the essence of the corresponding technical solutions out of the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-power milling cutter head for milling machines based on a wedge-block clamping and detachable structure, characterized in that, include: The tool holder (1) is connected by a threaded nut (2) with threaded grooves on both the inner and outer walls. Spring collet (3), with a milling cutter (4) mounted at the center of the spring collet (3); The clamping nut (2) is provided with a mounting base (21) inside, and the mounting base (21) is provided with a guide (211) for realizing the installation limit of the spring collet (3). The inner wall of the handle (1) is set in a wedge shape, that is, the diameter of the inner wall of the handle (1) gradually increases from top to bottom. The handle (1) is provided with a clamping group (11) to assist the wedge-shaped inner wall in pressing against the outer wall of the spring collet (3). The guide member (211) includes two sets of sliding grooves opened in the vertical direction on the inner wall of the mounting base (21). Each set of sliding grooves includes several guide grooves (2111) distributed in the circumferential direction. Two guide grooves (2111) with opposite positions are connected. A guide block (2112) with a magnet at one end is slidably arranged inside the guide groove (2111). Several guide blocks (2112) are connected to the outer wall of the spring collet (3).

2. A high-power milling cutter head for milling machines based on a wedge-block tightened and detachable structure according to claim 1, characterized in that: The mounting base (21) has a sloping inner wall at the lower end, with the diameter gradually decreasing from top to bottom. The mounting base (21) is also provided with a set of mating grooves.

3. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 2, characterized in that: The mating groove group includes an annular groove (212) opened on the upper end face of the mounting base (21) and several sliding grooves (213) opened along the circumferential direction on the inner wall of the mounting base (21). The sliding grooves (213) are provided with a support plate (214) by compression springs.

4. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 1, characterized in that: During installation, the spring collet (3) drives the guide block (2112) to achieve the installation and locking of the clamping nut (2) by pressing down, rotating and then pressing down again.

5. A high-power milling cutter head for milling machines based on a wedge-block tightened and detachable structure according to claim 1, characterized in that: The tool handle (1) is provided with a pressure plate (12) with a chamfered inner wall at one end near the clamping nut (2) corresponding to several support plates (214). The outer wall of the tool handle (1) is also provided with a locking nut (13) with a threaded groove on the inner circumference.

6. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 5, characterized in that: In the initial state, the locking nut (13) is located on the side away from the pressure plate (12).

7. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 6, characterized in that: The clamping assembly (11) includes a mounting groove (111) opened along the circumferential direction on the outer wall of the circumference of the handle (1). Each of the mounting grooves (111) is provided with an auxiliary component (112) for further clamping and limiting the spring collet (3). Inside the handle (1) and above the auxiliary component (112), there is also an inner support component (113) that supports the inner wall of the clamping nut (2) during operation.

8. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 7, characterized in that: The auxiliary component (112) includes a support plate (1121) that is slidably disposed inside the mounting groove (111). Both the upper and lower end faces of the support plate (1121) are connected to the inner wall of the mounting groove (111) by a reset spring. The end of the support plate (1121) facing the center of the tool holder (1) is provided with a stop block (1122) that contacts the outer wall of the spring collet (3).

9. A high-power milling cutter head for a milling machine based on a wedge-block tightened and detachable structure according to claim 7, characterized in that: The inner support member (113) includes a base shell (1131) connected to the handle (1). The base shell (1131) has several actuators arranged in the circumferential direction inside. Each actuator includes a tension spring (1133) and a shoe block (1132). The two ends of the tension spring (1133) are connected to the shoe block (1132) and the base shell (1131) respectively. The end of the shoe block (1132) away from the center of the base shell (1131) is in contact with the inner wall of the clamping nut (2).

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