Milling machine powerful milling cutter head based on wedge block fastening detachable structure

Abstract

The invention relates to the technical field of milling cutter heads, and discloses a milling machine powerful milling cutter head based on a wedge block fastening detachable structure, the milling machine powerful milling cutter head comprises a cutter handle, a clamping nut in threaded connection with the cutter handle, and a spring chuck for installing a milling cutter, a mounting seat is arranged in the clamping nut, a guide piece is arranged on the mounting seat, the guide piece comprises two sliding groove sets, each sliding groove set comprises a plurality of guide grooves, guide blocks are arranged in the guide grooves in a sliding mode, and the guide blocks are connected with the outer wall of the spring chuck. The milling machine powerful milling cutter head based on the wedge block fastening detachable structure can effectively solve the problems that in the prior art, in the clamping process of a spring chuck and a clamping nut, the requirements for experience and concentration of operators are high, inaccurate alignment is easily caused by improper manual operation, the installation efficiency is affected, and meanwhile, the installation cost is low. And the spring chuck and the clamping nut are shaken, so that the problem of unstable installation of the milling cutter is finally caused.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutter heads, in particular to a powerful milling cutter head for a milling machine based on a wedge-block-fastened and detachable structure. Background Art

[0002] The milling cutter head is a core functional component used for milling processing in CNC machine tools, machining centers and other equipment. A milling cutter head usually consists of a shank, clamping nut, spring collet and milling cutter. Its assembly quality is directly related to the clamping accuracy, rigidity and stability 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 engage the spring collet with the clamping nut, secondly, insert the milling cutter to be processed into the preliminarily assembled spring collet, and finally, screw the assembly with the installed spring collet and milling cutter into the tool holder, and by tightening the clamping nut, use its conical surface to squeeze the spring collet, and finally achieve reliable clamping of the milling cutter.

[0004] However, although the above-mentioned installation method of the milling cutter head is relatively common, it still has disadvantages in actual application. In the process of achieving the engagement of the spring collet and the clamping nut, the operator must carefully find the relative position of the card slot on the spring collet and the corresponding structure inside the clamping nut, and adjust it to clamp it in. This process requires a high level of experience and concentration from the operator, and it is very easy to cause misalignment due to visual errors or improper manual operation, which not only seriously affects the installation efficiency, but also causes shaking between the spring collet and the clamping nut, ultimately leading to unstable installation of the subsequent milling cutter. Summary of the Invention

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides a powerful milling cutter head for a milling machine based on a wedge-tightening detachable structure, which can effectively solve the problem in the prior art that, in the process of realizing the engagement of the spring collet and the clamping nut, the operator must carefully find the relative position of the card slot on the spring collet and the corresponding structure inside the clamping nut, and adjust it to clamp it in. This process requires a high level of experience and concentration from the operator, and is very likely to lead to inaccurate alignment due to visual errors or improper manual operation, which not only seriously affects the installation efficiency, but also causes shaking between the spring collet and the clamping nut, ultimately leading to the problem of unstable installation of the subsequent milling cutter.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure, comprising:

[0008] A knife handle, the knife handle being threadedly connected to a clamping nut with thread grooves formed on both the inner and outer walls;

[0009] A spring chuck, wherein a milling cutter is installed at the center of the spring chuck;

[0010] A mounting seat is provided inside the clamping nut, and a guide piece for achieving the installation limit of the spring collet is provided on the mounting seat;

[0011] The inner wall of the tool handle is set in a wedge shape, that is, the diameter of the inner wall of the tool handle gradually increases from top to bottom, and a tightening group is set inside the tool handle to assist the wedge-shaped inner wall in tightening against the outer wall of the spring collet;

[0012] Among them, the guide part includes two groups of sliding groove groups opened on the inner wall of the mounting seat in the up and down directions. Each group of sliding groove groups includes several guide grooves distributed along the circumferential direction. The two guide grooves in opposite positions are connected, and a guide block with a magnet at one end is slidingly arranged inside the guide groove. Several guide blocks are connected to the outer wall of the spring chuck.

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

[0014] Furthermore, the matching groove group includes an annular groove formed on the upper end surface of the mounting seat and a plurality of sliding grooves formed on the inner wall of the mounting seat along the circumferential direction, and a supporting plate is provided inside the plurality of sliding grooves via a compression spring.

[0015] Furthermore, during the installation process, the spring collet drives the guide block to achieve installation and locking with the clamping nut by pressing down, rotating and then continuing to press down.

[0016] Furthermore, a pressure plate with a chamfered inner wall is provided at the position of several support plates at one end of the knife handle close to the clamping nut, and a locking nut with a threaded groove on the circumferential inner wall is also slidably provided on the outer wall of the knife handle.

[0017] Furthermore, in the initial state, the locking nut is located on a side away from the pressure plate.

[0018] Furthermore, the tightening group includes mounting grooves arranged along the circumferential direction on the outer wall of the shank, and several mounting grooves are provided with auxiliary parts for further tightening and limiting the spring chuck. An internal support part is also provided inside the shank and above the auxiliary parts to support the inner wall of the clamping nut during operation.

[0019] Furthermore, the auxiliary part includes a supporting plate slidably arranged inside the mounting groove, the upper and lower end surfaces of the supporting plate are connected to the inner wall of the mounting groove through a reset spring, and a stop block is provided at one end of the supporting plate facing the center of the shank that contacts the outer wall of the spring chuck.

[0020] Furthermore, the inner support member includes a base shell connected to the tool handle, and several execution groups are arranged inside the base shell along the circumferential direction. Each execution group includes a tension spring and a shoe block. The two ends of the tension spring are respectively connected to the shoe block and the base shell, and the end of the shoe block away from the center of the base shell contacts the inner wall of the clamping nut.

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

[0022] The spring collet of the present invention enters the clamping nut through the guide block provided on its outer wall, and when the guide block drives the spring collet to move into the uppermost guide groove, it rotates according to the opening direction of the guide groove. Since the outer wall of the spring collet fits the inner wall of the mounting seat, the spring collet will not be separated from the mounting seat during the rotation process. When the spring collet rotates to the connection point of the upper and lower guide grooves, the spring collet is pressed downward, and the spring collet drives the four guide blocks to move into the guide groove located below, and finally the spring collet is continued to rotate. After the rotation process, the guide block fits the inner wall of the lower guide groove, and is finally magnetically connected to the inner wall of the guide groove at the corresponding position through the magnet provided on its outer wall. The installation work of the spring collet and the clamping nut can be realized by a simple rotating and pressing action. The operator only needs to align the guide block with the guide groove position at the beginning. This method not only optimizes the installation process of the spring collet and the clamping nut, but also improves the installation efficiency of the spring collet and the clamping nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting base and the milling cutter according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic structural diagram of the three-dimensional separation of the clamping nut, the mounting base, and the spring collet according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the mounting base and the supporting plate being three-dimensionally separated according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the planar structure of the mounting seat and the guide groove according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic structural diagram of the three-dimensional separation of the handle and the locking nut according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic structural diagram of the three-dimensional separation of the knife handle and the auxiliary component according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic structural diagram of the three-dimensional separation of the knife handle and the inner support member according to an embodiment of the present invention.

[0032] The numbers in the figure represent: 1. Tool handle; 11. Clamping group; 111. Mounting groove; 112. Auxiliary part; 1121. Support plate; 1122. Block; 113. Inner support part; 1131. Base shell; 1132. Shoe; 1133. Tension spring; 12. Pressure plate; 13. Locking nut; 2. Clamping nut; 21. Mounting seat; 211. Guide part; 2111. Guide groove; 2112. Guide block; 212. Annular groove; 213. Slide groove; 214. Support plate; 3. Spring chuck; 4. Milling cutter. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

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

[0035] Example:

[0036] See also Figure 1 - Figure 8 The present invention provides a technical solution: a powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure, comprising:

[0037] A tool handle 1 is threadedly connected to a clamping nut 2 with thread grooves on both the inner and outer walls;

[0038] A spring chuck 3, with a milling cutter 4 installed at the center of the spring chuck 3;

[0039] A mounting seat 21 is provided inside the clamping nut 2, and a guide member 211 is provided on the mounting seat 21 for achieving installation and positioning of the spring collet 3;

[0040] The inner wall of the shank 1 is set in a wedge shape, that is, the diameter of the inner wall of the shank 1 gradually increases from top to bottom. The inside of the shank 1 is provided with a tightening group 11 for assisting the wedge-shaped inner wall to tighten against the outer wall of the spring collet 3;

[0041] Among them, the guide member 211 includes two groups of sliding groove groups opened on the inner wall of the circumference of the mounting seat 21 in the up and down directions, and each group of sliding groove groups includes a plurality of guide grooves 2111 distributed along the circumferential direction. The two guide grooves 2111 in opposite positions are connected, and a guide block 2112 with a magnet at one end is slidably provided inside the guide groove 2111. Several guide blocks 2112 are connected to the outer wall of the spring chuck 3.

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

[0043] The matching groove group includes an annular groove 212 formed on the upper end surface of the mounting seat 21 and a plurality of sliding grooves 213 formed on the inner wall of the mounting seat 21 along the circumferential direction. A supporting plate 214 is provided inside the plurality of sliding grooves 213 via a compression spring.

[0044] During the installation process, the spring chuck 3 drives the guide block 2112 to achieve installation and locking with the clamping nut 2 by pressing down, rotating and then continuing to press down.

[0045] A pressure plate 12 with a chamfered inner wall is provided at one end of the knife handle 1 near the clamping nut 2 corresponding to the positions of the supporting plates 214. A locking nut 13 with a threaded groove on the inner wall is also slidably provided on the outer wall of the knife handle 1.

[0046] In the initial state, the locking nut 13 is located at a side away from the pressure plate 12 .

[0047] The tightening group 11 includes mounting grooves 111 opened along the circumferential direction on the outer wall of the shank 1. Auxiliary parts 112 for further tightening and limiting the spring collet 3 are provided inside the several mounting grooves 111. An internal support part 113 is also provided inside the shank 1 and above the auxiliary part 112 to support the inner wall of the clamping nut 2 during operation.

[0048] The auxiliary part 112 includes a supporting plate 1121 slidably arranged inside the mounting groove 111. The upper and lower end surfaces of the supporting plate 1121 are connected to the inner wall of the mounting groove 111 through a reset spring. The end of the supporting plate 1121 facing the center of the shank 1 is provided with a stop block 1122 that contacts the outer wall of the spring chuck 3.

[0049] The inner support member 113 includes a base shell 1131 connected to the shank 1, and a plurality of execution groups are arranged inside the base shell 1131 along the circumferential direction. Each execution group includes a tension spring 1133 and a shoe 1132. The two ends of the tension spring 1133 are respectively connected to the shoe 1132 and the base shell 1131. The end of the shoe 1132 away from the center of the base shell 1131 contacts the inner wall of the clamping nut 2.

[0050] During the specific work, the installation work of the spring collet 3 and the clamping nut 2 is as follows:

[0051] The operator needs to engage the spring collet 3 with the clamping nut 2, then insert the milling cutter 4 to be processed into the preliminarily assembled spring collet 3, and finally screw the assembly of the installed spring collet 3 and the milling cutter 4 into the tool holder 1, and by tightening the clamping nut 2, use its conical surface to squeeze the spring collet 3, and finally achieve reliable clamping of the milling cutter 4.

[0052] However, although the above-mentioned installation method of the milling cutter head is relatively common, it still has disadvantages in actual application. In the process of achieving the engagement of the spring collet 3 and the clamping nut 2, the operator must carefully find the relative position of the card slot on the spring collet 3 and the corresponding structure inside the clamping nut 2, and adjust it to clamp it in. This process requires high experience and concentration of the operator, and is very likely to cause misalignment due to visual errors or improper manual operation, which not only seriously affects the installation efficiency, but also causes shaking between the spring collet 3 and the clamping nut 2, and ultimately leads to unstable installation of the subsequent milling cutter 4. Based on this, a mounting seat 21 is provided in the clamping nut 2 of the milling machine's powerful milling cutter head with a detachable wedge clamping structure. The spring collet 3 is quickly installed through the guide member 211 provided on the mounting seat 21, which does not require high experience and concentration of the operator. It not only optimizes the installation process, but also ensures the stability of the clamping nut 2 and the spring collet 3 after installation through the cooperative contact between the mounting seat 21 and the spring collet 3, laying the foundation for the stable installation of the subsequent milling cutter 4.

[0053] The guide blocks 2112 on the outer wall of the mounting base 21 are provided with guide grooves 2111, and the two guide grooves 2111 on the opposite sides are connected (the guide groove 2111 on the upper side is also provided with a through groove to facilitate the entry of the guide block 2112 in the initial state). When the clamping nut 2 and the spring collet 3 need to be installed, the spring collet 3 is first inserted into the clamping nut 2 along the position of the guide groove 2111. Then, the installation work with the clamping nut 2 is achieved by pressing down, rotating, and then pressing down again (the inner wall of the mounting base 21 is provided with two groups of sliding grooves along the circumferential direction, and each group of sliding grooves includes four guide grooves 2111. The spring collet 3 enters the clamping nut 2 through the guide blocks 2112 on its outer wall. When the guide blocks 2112 drive the spring collet 3 to move to the inner side of the uppermost guide groove 2111, it rotates according to the opening direction of the guide groove 2111. Since the outer wall of the spring collet 3 is aligned with the mounting base The inner wall of the seat 21 fits together, so the spring clamp 3 will not separate from the mounting seat 21 during the rotation process. When the spring clamp 3 rotates to the connection point of the upper and lower guide grooves 2111, press the spring clamp 3 downward, and the spring clamp 3 drives the four guide blocks 2112 to move into the inside of the guide groove 2111 located below, and finally continue to rotate the spring clamp 3. The guide blocks 2112 fit together with the inner wall of the guide groove 2111 below after the rotation process, and are finally magnetically connected to the inner wall of the guide groove 2111 at the corresponding position through the magnets set on their outer walls). The installation of the spring clamp 3 and the clamping nut 2 can be achieved by a simple rotation and pressing action. The operator only needs to align the guide blocks 2112 with the guide groove 2111 at the beginning. This method not only optimizes the installation process of the spring clamp 3 and the clamping nut 2, but also improves the installation efficiency of the spring clamp 3 and the clamping nut 2.

[0054] In the assembly process of the milling cutter head, assembling the milling cutter 4 and the spring chuck 3 is a crucial link. Usually, the shank 1 of the milling cutter 4 and the inner hole of the spring chuck 3 are connected by a clearance fit. Due to the characteristics of the clearance fit, after the milling cutter 4 is inserted into the spring chuck 3, there is a certain small gap between it and the inner wall of the chuck. Therefore, the initial state of the milling cutter 4 in the chuck is not stable, and the operator needs to use his hands to assist and support it to ensure that it remains stable in the subsequent installation steps. If there is no such artificial support, the milling cutter 4 is very likely to shake or even fall off due to vibration during the installation process. Based on this, the milling machine's high-power milling cutter head based on the wedge-fixed detachable structure can simultaneously realize the auxiliary clamping of the milling cutter 4 during the rotation and downward pressing process of the spring chuck 3.

[0055] Specifically, due to its structural characteristics, both ends of the spring chuck 3 can be deformed to a certain extent. After the spring chuck 3 enters the upper guide groove 2111, the operator inserts the milling cutter 4 to be processed into the spring chuck 3 and adjusts the length to be extended. Then, the spring chuck 3 is controlled to be pressed down, and the guide block 2112 enters the guide groove 2111 located below (the inner wall of the circumference of the mounting seat 21 at the lower end is set in a slope, that is, the diameter gradually decreases from top to bottom, and the spring chuck 3 is not initially pressed down). When pressed, its outer wall does not contact the inner wall of the sloped mounting seat 21. When the spring chuck 3 is pressed down, its outer wall contacts the inner wall of the mounting seat 21 and deforms, causing the spring chuck 3 to shrink synchronously, narrowing the gap between the spring chuck 3 and the milling cutter 4. This improves the stability of the milling cutter 4 during installation without the assistance of an operator. As the spring chuck 3 rotates after being pressed down, the guide block 2112 is magnetically connected to the inner wall of the guide groove 2111, ultimately completing the preliminary clamping of the outer wall of the milling cutter 4).

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

[0057] In the process of machining large workpieces by milling, due to the large volume of the workpiece and the large cutting allowance, the milling cutter 4 often needs to operate continuously for a long time to complete the machining task. This long-term, high-load working condition makes the connection strength of the clamping nut 2 and the shank 1 particularly important. The tight fit between the wedge-shaped inner wall inside the shank 1 and the spring collet 3 is the prerequisite for ensuring the stable operation of the milling cutter 4. However, in the actual high-speed milling process, the milling cutter 4 not only bears huge centrifugal force, but also generates vibration due to factors such as milling work, which can easily lead to loosening between the existing clamping nut 2 and the shank 1 that only relies on threaded connection. Based on this, a tightening group 11 is provided on the shank 1 of the milling machine's high-power milling cutter head with a detachable structure based on a wedge block tightening. Through the setting of the tightening group 11, not only can the support area on the outer wall of the spring collet 3 be increased during the installation process of the shank 1 and the clamping nut 2, but also further tightening of the inner wall of the clamping nut 2 can be achieved according to the speed of the milling cutter 4.

[0058] Specifically, an annular groove 212 and a slide groove 213 are provided on the upper end surface of the mounting seat 21. A supporting plate 214 is provided inside the slide groove 213 through a compression spring. When the clamping nut 2 is installed with the spring collet 3, the annular groove 212 on the mounting seat 21 is first aligned with the pressure plate 12. Then, the clamping nut 2 is clamped into the tool handle 1 along the pressure plate 12. Then, the clamping nut 2 is rotated to be threadedly connected with the tool handle 1. In the process of moving the clamping nut 2, the outer wall of the spring collet 3 arranged inside it is tightened (the outer wall of the spring collet 3 is not only supported by the wedge-shaped inner wall of the tool handle 1, but also supported by the outer wall of the spring collet 3). The support plates 214 are pressed against the outer walls of the upper and lower ends of the spring collet 3. Specifically, the support plates 214 are chamfered on one side of the annular groove 212. When the mounting seat 21 moves following the clamping nut 2, the pressure plate 12 contacts the support plates 214 inside the slide groove 213 first, and the contact between the pressure plate 12 and the support plates 214 causes several support plates 214 to slide along their respective slide grooves 213 respectively. After the locking work of the clamping nut 2 and the tool handle 1 is completed, several support plates 214 are fully extended, and the support plates 214 are away from one side of the pressure plate 12. The end contacts the outer wall of the spring collet 3, thereby realizing the tightening work of the outer wall of the lower end of the spring collet 3. The circumferential outer wall of the tool handle 1 is provided with a plurality of mounting grooves 111. A supporting plate 1121 and a blocking block 1122 are slidably provided inside the plurality of mounting grooves 111. When the clamping nut 2 moves, the inner wall of its upper end synchronously pushes the plurality of blocking blocks 1122 to slide along the mounting groove 111. Subsequently, the supporting plate 1121 stretches the reset spring under the drive of the blocking block 1122, and makes the blocking block 1122 contact the outer wall of the spring collet 3 away from the side of the clamping nut 2, thereby realizing the tightening work of the outer wall of the upper end of the spring collet 3). Finally, the control The locking nut 13 is screwed into the clamping nut 2 and further locked with the clamping nut 2. Through the installation of the clamping nut 2 and the tool handle 1, not only the wedge-shaped inner wall of the tool handle 1 is tightened against the outer wall of the spring chuck 3, but also the further tightening of the outer wall of the spring chuck 3 at different positions is achieved synchronously through the support block 1122 and the support plate 214. Through a single locking operation, the multi-point tightening of the outer wall of the spring chuck 3 can be completed, which not only improves the continuity of the tightening work, but also adopts a multi-point tightening method to ensure the stability of the spring chuck 3 and the milling cutter 4 installed therein during subsequent long-term work.

[0059] When the tool holder 1 drives the milling cutter 4 to rotate at high speed for a long time, the tension spring 1133 and the shoe 1132 arranged inside the base shell 1131 are used to further tighten the clamping nut 2. Specifically, the clamping nut 2 is provided with a linkage groove at the position of the shoe 1132. In the initial state, several shoes 1132 do not contact the inner wall of the linkage groove due to the tension of the tension spring 1133 at the corresponding position. When the speed increases and the centrifugal force is greater than the tension of the tension spring 1133, the shoe 1132 overcomes the resistance of the tension spring 1133 and is thrown outward and finally contacts the inner wall of the linkage groove, thereby achieving its tightening work with the clamping nut 2. Through the setting of the internal support part 113, the clamping nut 2 is prevented from being subjected to continuous vibration from the milling cutter 4 under high-speed rotation, thereby causing the problem of reduced connection strength, thereby further 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 disassembly of the parts can be completed by simply reversing the above steps.

[0061] It is worth emphasizing that the powerful milling cutter head of the milling machine based on the wedge-fixed detachable structure has the following main advantages:

[0062] Advantage 1: The spring chuck 3 enters the interior of the clamping nut 2 through the guide block 2112 set on its outer wall. When the guide block 2112 drives the spring chuck 3 to move to the inside of the uppermost guide groove 2111, it rotates according to the opening direction of the guide groove 2111. Since the outer wall of the spring chuck 3 fits the inner wall of the mounting seat 21, the spring chuck 3 will not be separated from the mounting seat 21 during the rotation process. When the spring chuck 3 rotates to the connection point of the upper and lower guide grooves 2111, the spring chuck 3 is pressed downward, and the spring chuck 3 drives the four guide blocks 2112 to move to the guide groove located below. 2111, and finally continue to rotate the spring collet 3. After the rotation process, the guide block 2112 fits with the inner wall of the guide groove 2111 below, and is finally magnetically connected with the inner wall of the guide groove 2111 at the corresponding position through the magnet set on its outer wall. The installation of the spring collet 3 and the clamping nut 2 can be achieved through a simple rotation and pressing action. The operator only needs to align the guide block 2112 with the guide groove 2111 at the beginning. This method not only optimizes the installation process of the spring collet 3 and the clamping nut 2, but also improves the installation efficiency of the spring collet 3 and the clamping nut 2.

[0063] Advantage 2: the inner wall of the circumference of the mounting seat 21 at the lower end is set to be sloped, that is, the diameter gradually decreases from top to bottom. When the spring chuck 3 is not pressed down initially, its outer wall does not contact the inner wall of the sloped mounting seat 21. When the spring chuck 3 is pressed down, its outer wall is deformed after contacting the inner wall of the mounting seat 21, and the spring chuck 3 is synchronously contracted, narrowing the gap between the spring chuck 3 and the milling cutter 4. Without the assistance of the operator, the stability of the milling cutter 4 during the installation work is improved. With the rotation of the spring chuck 3 after being pressed down, the guide block 2112 is magnetically connected to the inner wall of the guide groove 2111, and finally the preliminary clamping of the outer wall of the milling cutter 4 is completed. In this way, the intervention of the operator is reduced, and its stability in the subsequent installation steps is ensured, thereby avoiding the problem of the milling cutter 4 shaking or even falling off due to vibration during the installation process.

[0064] Advantage three, the side of the support plate 214 close to the annular groove 212 is chamfered, and when the mounting seat 21 moves following the clamping nut 2, the pressure plate 12 first contacts the support plate 214 inside the slide groove 213, and through the contact between the pressure plate 12 and the support plate 214, several support plates 214 slide along their respective slide grooves 213, and after completing the locking work of the clamping nut 2 and the tool handle 1, several support plates 214 are fully extended, and the end of the support plate 214 away from the pressure plate 12 contacts the outer wall of the spring collet 3, thereby realizing the tightening work of the outer wall of the lower end of the spring collet 3, and when the clamping nut 2 moves, the inner wall of its upper end synchronously pushes several support blocks 1122 along the mounting groove 11 1 slides, and makes the side of the abutting block 1122 away from the clamping nut 2 contact with the outer wall of the spring collet 3, thereby realizing the tightening work on the outer wall of the upper end of the spring collet 3. Through the installation work of the clamping nut 2 and the tool handle 1, not only the wedge-shaped inner wall of the tool handle 1 is tightened against the outer wall of the spring collet 3, but also the abutting work on different positions of the outer wall of the spring collet 3 is realized synchronously through the abutting block 1122 and the supporting plate 214. Through a single locking work, the multi-point tightening work on the outer wall of the spring collet 3 can be completed, which not only improves the consistency of the tightening work, but also adopts the multi-point tightening method to ensure the stability of the spring collet 3 and the milling cutter 4 installed therein during the subsequent long-term work.

[0065] Advantage four: due to the tension of the tension spring 1133 at the corresponding position, several shoe blocks 1132 do not contact the inner wall of the linkage groove. When the rotation speed increases and the centrifugal force is greater than the tension of the tension spring 1133, the shoe blocks 1132 overcome the resistance of the tension spring 1133, and are thrown outward and finally contact the inner wall of the linkage groove, thereby realizing its tightening work with the clamping nut 2. Through the setting of the internal support 113, the clamping nut 2 is prevented from being subjected to continuous vibration from the milling cutter 4 under high-speed rotation, thereby causing the problem of reduced connection strength, and further improving the stability of the milling cutter 4 and the clamping nut 2 during continuous work.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure, characterized in that: include: A knife handle (1), wherein the knife handle (1) is threadably connected to a clamping nut (2) having thread grooves formed on both inner and outer walls; A spring chuck (3), wherein a milling cutter (4) is mounted at the center of the spring chuck (3); A mounting seat (21) is provided inside the clamping nut (2), and a guide member (211) for achieving installation and positioning of the spring clamp (3) is provided on the mounting seat (21); The inner wall of the shank (1) is configured to be wedge-shaped, i.e., the diameter of the inner wall of the shank (1) gradually increases from top to bottom, and a tightening group (11) is provided inside the shank (1) for assisting the wedge-shaped inner wall in tightening against the outer wall of the spring collet (3); The guide member (211) comprises two groups of sliding grooves provided on the inner circumferential wall of the mounting seat (21) in the up-down direction, each group of the sliding grooves comprises a plurality of guide grooves (2111) distributed in the circumferential direction, two guide grooves (2111) positioned opposite to each other are connected, and a guide block (2112) having a magnet at one end is slidably provided inside the guide groove (2111), and a plurality of the guide blocks (2112) are connected to the outer wall of the spring chuck (3).

2. A powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 1, characterized in that: The inner circumferential wall of the mounting seat (21) at the lower end is arranged in a slope shape, that is, the diameter gradually decreases from top to bottom, and a matching groove group is also provided on the mounting seat (21).

3. A powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 2, characterized in that: The matching groove group includes an annular groove (212) formed on the upper end surface of the mounting seat (21) and a plurality of sliding grooves (213) formed on the inner wall of the mounting seat (21) along the circumferential direction. A plurality of the sliding grooves (213) are provided with supporting plates (214) via compression springs.

4. A powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 1, characterized in that: During the installation process, the spring chuck (3) drives the guide block (2112) to achieve installation and locking work with the clamping nut (2) by pressing down, rotating and then continuing to press down.

5. The powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 1, characterized in that: A pressure plate (12) with a chamfered inner wall is provided at a position corresponding to a plurality of support plates (214) at one end of the knife handle (1) close to the clamping nut (2), and a locking nut (13) with a threaded groove provided on the circumferential inner wall is also slidably provided on the outer wall of the knife handle (1).

6. A powerful milling cutter head for a milling machine based on a wedge-tightening 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 powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 6, characterized in that: The tightening group (11) includes a mounting groove (111) provided on the outer circumferential wall of the shank (1) along the circumferential direction, and several of the mounting grooves (111) are provided with auxiliary parts (112) for further tightening and limiting the spring collet (3). An inner support part (113) is also provided inside the shank (1) and above the auxiliary parts (112) for supporting the inner wall of the clamping nut (2) during operation.

8. The powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 7, characterized in that: The auxiliary component (112) includes a support plate (1121) slidably arranged inside the mounting groove (111), and the upper and lower end surfaces of the support plate (1121) are connected to the inner wall of the mounting groove (111) through a return spring, and the end of the support plate (1121) facing the center of the knife handle (1) is provided with a stop block (1122) in contact with the outer wall of the spring chuck (3).

9. The powerful milling cutter head for a milling machine based on a wedge-tightening and detachable structure according to claim 7, characterized in that: The inner support member (113) includes a base shell (1131) connected to the shank (1), and a plurality of actuator groups are arranged inside the base shell (1131) along the circumferential direction. Each actuator group includes a tension spring (1133) and a shoe (1132). The two ends of the tension spring (1133) are respectively connected to the shoe (1132) and the base shell (1131), and the end of the shoe (1132) away from the center of the base shell (1131) contacts the inner wall of the clamping nut (2).

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