Metal knife rest milling machine with micro-fluidic temperature control regulation and control structure

Abstract

The invention relates to the technical field of milling cutters, and discloses a metal knife rest milling machine with a microfluidic temperature control regulation structure, which comprises a milling machine main body, the mounting seat comprises a fixing plate, the bottom end of the fixing plate is fixedly connected with a fixing seat, the fixing seat is provided with a limiting part through a cavity formed in the fixing seat, and the outer surface of the circumference of the fixing seat is provided with a driving part used for adjusting the limiting part; the milling cutter main body comprises a cutter handle and a cutter, and linear channels for cooling liquid to flow are formed in the cutter handle and the cutter. According to the metal knife rest milling machine with the micro-fluidic temperature control regulation and control structure, the problems that in the prior art, the skill requirement of milling cutter replacement on operators is high, the operators need to be familiar with the structure and the mounting method of a cutter and the use of various tools, certain experience is needed to ensure the mounting accuracy, the operation steps are complex, and the working efficiency is high can be effectively solved. Therefore, the shutdown time of the milling machine is prolonged, and the machining efficiency of workpieces is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, and in particular to a metal tool holder milling machine equipped with a microfluidic temperature control structure. Background Art

[0002] Milling machine is a widely used machine tool. On the milling machine, the milling cutter can be used to process planes, grooves, toothed parts, spiral surfaces and various curved surfaces on the workpiece. The milling cutter is a rotating tool used for milling. It removes excess material on the workpiece through rotational motion and relative feed motion with the workpiece to obtain the desired shape, size and surface quality. The milling cutter is mainly used to process planes, steps, grooves, formed surfaces and cut off workpieces on the milling machine.

[0003] According to the structure of the milling cutter, it can generally be divided into integral type, integral welded tooth type, inserted tooth type and indexable type. Among these types, the replacement of the milling cutter involves multiple complex steps. The traditional replacement of the milling cutter requires high skills of the operator. It requires them to be familiar with the structure of the tool, installation methods and the use of various tools, and have certain experience to ensure the accuracy of the installation. The operation steps are relatively complicated, which leads to increased downtime of the milling machine and affects the processing efficiency of the workpiece. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a metal tool holder milling machine equipped with a microfluidic temperature control structure, which can effectively solve the problem in the prior art that the replacement of the milling cutter has high skill requirements for the operator, and requires the operator to be familiar with the structure of the tool, installation method and use of various tools, and have certain experience to ensure the accuracy of the installation. The operating steps are relatively complicated, which leads to increased downtime of the milling machine and affects the processing efficiency of the workpiece.

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

[0007] The present invention provides a metal tool holder milling machine equipped with a microfluidic temperature control structure, comprising:

[0008] Milling machine body;

[0009] A mounting seat, the mounting seat comprising a fixing plate, the fixing plate being fixedly connected to the driving part of the milling machine body, the fixing seat being fixedly connected to the bottom end of the fixing plate, the fixing seat being provided with a limiting part through a cavity opened inside the fixing seat, and a driving member for adjusting the limiting part being provided on the circumferential outer surface of the fixing seat;

[0010] A milling cutter body, the milling cutter body comprising a shank and a tool, and the shank and the tool are designed as one body, the shank can be detachably mounted in a fixed seat through a limiting portion, a linear channel for the flow of coolant is provided inside the shank and the tool, and a limiting slot and a locking hole are provided on the surface of the shank;

[0011] Among them, the limiting part includes a guide groove, which is opened at the bottom of the cavity, and a limiting plate is slidably connected in the guide groove. A limiting block that fits the limiting groove is fixedly connected to the side of the limiting plate close to the central axis of the fixed seat, and a locking piece that can be used to lock the knife handle is arranged in the limiting plate.

[0012] Furthermore, the driving member comprises a ring frame, the ring frame is fixedly connected to the circumferential outer surface of the fixing seat, the ring frame is rotatably connected to a rotating ring via an annular groove arranged inside the ring frame, and a gear ring is fixedly connected to the inner side of the rotating ring.

[0013] Furthermore, a bracket is fixedly connected to the top of the ring frame, and the bracket is slidably connected to a clamping plate through a rectangular hole arranged inside the bracket, and a counterweight plate is fixedly connected to the top of the clamping plate. A limiting groove that fits with the clamping plate is opened on the top of the rotating ring.

[0014] Furthermore, a driving rod is rotatably installed in the guide groove, and the driving rod passes through the fixed seat and extends to the lower part of the rotating ring. The driving rod is threadedly connected to the bottom end of the limit plate through a threaded groove set on its circumferential outer surface, and the end of the driving rod is fixedly connected to a bevel gear meshing with the ring gear.

[0015] Furthermore, the locking member includes a transverse groove and a vertical groove, and the transverse groove and the vertical groove are connected to each other, and the transverse groove and the vertical groove are both opened inside the limiting plate, and two transverse grooves and two vertical grooves are each provided and symmetrically distributed with the limiting plate as the center.

[0016] Furthermore, a locking rod is slidably connected in the horizontal groove and fits with the inner wall of the locking hole, and an abutment block is slidably connected in the vertical groove. The cross-section of the abutment block is trapezoidal, and a side of the locking rod close to the abutment block is provided with an inclined surface that fits with the abutment block. The side wall of the locking rod is connected to the side wall of the limit plate through a compression spring.

[0017] Furthermore, the limit plate is slidably connected to a counterweight block via sliding grooves provided on both sides thereof, and the middle portion of the counterweight block is connected to the vertical plate of the limit plate via a return spring.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The present invention is provided with a locking member and a limiting part, and a driving member is used to drive the limiting plate in the limiting part to move synchronously, so that the milling cutter body can be quickly replaced, the replacement steps of the milling cutter body are simplified, and the replacement process takes a short time. At the same time, the limiting plate is controlled by the driving member, and the limiting block and the limiting slot are cooperated to realize the initial limiting of the milling cutter body. When the rotation speed of the milling cutter body increases, the centrifugal force on the counterweight block increases until the centrifugal force overcomes the elastic force of the reset spring itself. At this time, the locking rod will squeeze the abutment block, so that the locking rod extends out and engages in the locking hole, thereby realizing the secondary limiting of the milling cutter body. Under a higher centrifugal force level, a stronger constraint can be provided for the milling cutter body, further limiting the milling cutter body, preventing the milling cutter body from loosening or excessively vibrating under high-speed rotation, and affecting the processing accuracy of the milling cutter body on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of a mounting seat and a milling cutter body according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the three-dimensional separation of the mounting base and the milling cutter body according to an embodiment of the present invention;

[0024] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of the three-dimensional separation of the mounting base according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of a partial three-dimensional structure of a limiting part according to an embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of a partial three-dimensional structure of a rotating ring according to an embodiment of the present invention;

[0028] Figure 8 For the embodiment of the present invention Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0029] Fig. 9 It is a schematic diagram of the structure in which the locking member and the limiting plate are three-dimensionally separated in an embodiment of the present invention;

[0030] Fig.10 Schematic diagram of the cross-sectional structure of a limiting plate according to an embodiment of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of a straight channel according to an embodiment of the present invention.

[0032] The numbers in the figure represent: 1. milling machine body; 2. mounting seat; 21. fixing plate; 22. fixing seat; 23. limiting part; 231. guide groove; 232. limiting plate; 233. limiting block; 234. locking member; 2341. transverse groove; 2342. vertical groove; 2343. locking rod; 2344. abutment block; 2345. counterweight block; 24. driving member; 241. ring frame; 242. rotating ring; 2421. gear ring; 243. bracket; 244. clamping plate; 245. counterweight plate; 246. limiting groove; 247. driving rod; 2471. bevel gear; 3. milling cutter body; 31. tool handle; 32. tool; 33. linear channel; 34. limiting slot; 35. locking hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0034] The present invention will be further described below in conjunction with the embodiments.

[0035] Example:

[0036] See also Figure 1-Figure 11 The present invention provides a technical solution: a metal tool holder milling machine equipped with a microfluidic temperature control structure, comprising:

[0037] Milling machine body 1;

[0038] The mounting base 2 includes a fixing plate 21, the fixing plate 21 is fixedly connected to the driving part of the milling machine body 1, a fixing base 22 is fixedly connected to the bottom end of the fixing plate 21, a limiting portion 23 is provided in the fixing base 22 through a cavity opened inside the fixing base 22, and a driving member 24 for adjusting the limiting portion 23 is provided on the circumferential outer surface of the fixing base 22;

[0039] The milling cutter body 3 includes a shank 31 and a tool 32, and the shank 31 and the tool 32 are designed as one body. The shank 31 is detachably mounted in the fixing seat 22 through the limiting portion 23. A straight channel 33 for the flow of coolant is provided inside the shank 31 and the tool 32. A limiting slot 34 and a locking hole 35 are provided on the surface of the shank 31.

[0040] Among them, the limiting part 23 includes a guide groove 231, which is opened at the bottom of the cavity, and a limiting plate 232 is slidably connected in the guide groove 231. The limiting plate 232 is fixedly connected with a limiting block 233 that fits with the limiting groove 34 on one side close to the central axis of the fixed seat 22, and a locking piece 234 that can be used to lock the knife handle 31 is arranged in the limiting plate 232.

[0041] The driving member 24 includes a ring frame 241 , which is fixedly connected to the circumferential outer surface of the fixing seat 22 . The ring frame 241 is rotatably connected to a rotating ring 242 via an annular groove arranged inside the ring frame 241 , and a gear ring 2421 is fixedly connected to the inner side of the rotating ring 242 .

[0042] The top of the ring frame 241 is fixedly connected to a bracket 243, and the bracket 243 is slidably connected to a clamping plate 244 through a rectangular hole set inside it. The top of the clamping plate 244 is fixedly connected to a counterweight plate 245, and a limiting groove 246 that fits with the clamping plate 244 is opened on the top of the rotating ring 242.

[0043] A driving rod 247 is rotatably installed in the guide groove 231, and the driving rod 247 passes through the fixed seat 22 and extends to the lower part of the rotating ring 242. The driving rod 247 is threadedly connected to the bottom end of the limiting plate 232 through a threaded groove set on its circumferential outer surface, and the end of the driving rod 247 is fixedly connected to a bevel gear 2471 meshing with the ring gear 2421.

[0044] The locking member 234 includes a transverse groove 2341 and a vertical groove 2342, and the transverse groove 2341 and the vertical groove 2342 are connected to each other. The transverse groove 2341 and the vertical groove 2342 are both opened inside the limiting plate 232, and there are two transverse grooves 2341 and two vertical grooves 2342 respectively and they are symmetrically distributed with the limiting plate 232 as the center.

[0045] A locking rod 2343 that fits with the inner wall of the locking hole 35 is slidably connected in the horizontal groove 2341, and a contact block 2344 is slidably connected in the vertical groove 2342. The cross-section of the contact block 2344 is trapezoidal, and a slope that fits with the contact block 2344 is provided on the side of the locking rod 2343 close to the contact block 2344. The side wall of the locking rod 2343 is connected to the side wall of the limit plate 232 through a compression spring.

[0046] The limiting plate 232 is slidably connected to a counterweight block 2345 via sliding grooves provided on both sides thereof, and the middle portion of the counterweight block 2345 is connected to the vertical plate of the limiting plate 232 via a return spring.

[0047] The principle and advantages of the metal tool holder milling machine equipped with a microfluidic temperature control structure:

[0048] Installation of milling cutter:

[0049] First, by using the mounting holes on the fixing plate 21 and the bolt group, the fixing plate 21 and the fixing seat 22 can be installed on the milling machine body 1. Then, the staff places the shank 31 of the milling cutter body 3 in the cavity of the fixing seat 22. At this time, the rotating ring 242 is rotated. Since the gear ring 2421 on the inner side of the rotating ring 242 is engaged with the bevel gear 2471, the driving rod 247 will rotate synchronously at a uniform speed. In addition, the circumferential outer surface of the driving rod 247 is provided with a thread. When the driving rod 247 rotates at a uniform speed, the driving rod 247, with the cooperation of the thread, the four limit plates 232 will move along the guide groove 231 toward the center of the fixing seat 22, so that the four limit plates 232 can be fitted with the surface of the shank 31. At the same time, the limit block 233 on the limit plate 232 will be engaged in the limit slot 34, thereby completing the preliminary fixation of the shank 31.

[0050] It is worth noting that there can be multiple limit plates 232, and the specific number is designed with reference to the shape of the tool handle 31. Four are preferably used here. In addition, since the mounting seat 2 is vertically mounted on the milling machine body 1, the counterweight plate 245 will, under the cooperation of its own gravity, engage the clamping plate 244 in the limit groove 246, so as to avoid that during actual use of the rotating ring 242, when the milling cutter body 3 is working normally, the mounting seat 2 vibrates slightly, causing the position of the rotating ring 242 to change, thereby affecting the limiting effect of the limit plate 232 on the tool handle 31. At the same time, when the staff rotates the rotating ring 242, the counterweight plate 245 can be pulled up, and then the clamping plate 244 will be separated from the limit groove 246, so as to avoid the clamping plate 244 being engaged in the limit groove 246 and affecting the normal rotation of the rotating ring 242. The number of clamping plates 244 can be set according to actual needs.

[0051] The locking process of the milling cutter:

[0052] After the position of the tool handle 31 of the milling cutter body 3 is initially limited by the limit plate 232, as the milling machine body 1 drives the milling cutter body 3 to rotate at a high speed, at this time, the counterweight block 2345 on the limit plate 232 will generate a large centrifugal force, so that the counterweight block 2345 can move along the slide groove. As the counterweight block 2345 moves on the limit plate 232, the counterweight block 2345 will gradually contact the abutment block 2344. At this time, the counterweight block 2345 will squeeze the abutment block 2344, so that the abutment block 2344 moves downward along the vertical slot 2342 in the limit plate 232. When the rotation speed of the milling cutter body 3 is stable, at this time, the counterweight block 2345 moves along the slide groove to the farthest distance with the cooperation of the centrifugal force, and can completely extend the abutment block 2344 out of the vertical slot 2342. Squeezed into the vertical groove 2342, since the inclined surfaces between the locking rod 2343 and the abutment block 2344 fit each other, and since the inclination angle of the inclined surface is large (the inclination angle of the inclined surface is greater than 45 degrees), only a small force needs to be applied to push, and a large vertical component force will be generated on the inclined surface, so that the abutment block 2344 and the locking rod 2343 can move smoothly in the vertical groove 2342 and the transverse groove 2341. At this time, the locking rod 2343 will move along the transverse groove 2341 until the end of the locking rod 2343 is engaged in the locking hole 35, thereby completing the locking of the milling cutter body 3, and a "gap" is left in the transverse groove 2341 and the vertical groove 2342, which is sufficient for the movement of the locking rod 2343 and the abutment block 2344 without interfering with each other, thereby affecting the normal use of the locking rod 2343.

[0053] It is worth noting that when the milling cutter body 3 just starts to rotate, the centrifugal force is not enough to overcome the elastic force of the reset spring, and the counterweight block 2345 maintains its initial position. The limit plate 232 cooperates with the limit block 233 and the limit slot 34 to perform preliminary position constraints on the milling cutter body 3 at a lower centrifugal force level, which is beneficial for ensuring a certain degree of stability of the milling cutter body 3 when it just starts cutting, and preventing the milling cutter from affecting the machining accuracy due to the initial slight displacement. When the rotation speed of the milling cutter body 3 increases, the centrifugal force on the counterweight block 2345 increases until the centrifugal force overcomes the elastic force of the reset spring itself. At this time, the locking rod 2343 will extend out and engage in the locking hole 35, and the secondary limit will be achieved through the locking hole 35. It can provide a stronger constraint for the milling cutter body 3 at a higher centrifugal force level, further limit the milling cutter body 3, and prevent the milling cutter body 3 from loosening or excessive vibration under high-speed rotation.

[0054] When the milling cutter body 3 is milling a workpiece, external coolant can enter the milling cutter body 3 through the straight channel 33 in the milling cutter body 3. The straight channel 33 can spray the coolant from the lower part of the milling cutter body 3. When the heat generated by the milling process is large, and the heat dissipation by the flow of coolant in the channel is not enough to quickly reduce the temperature of the cutting area, the coolant can be sprayed out so that the coolant can directly act on the contact area between the cutting edge and the workpiece, forming a more efficient heat exchange and quickly taking away the heat, thereby better controlling the temperature of the milling cutter body 3 and the workpiece and reducing the problems of thermal deformation and tool 32 wear.

[0055] It is worth mentioning that the design and processing of the linear channel 33 are relatively simple, easy to implement and control, and the coolant sprayed from the linear channel 33 can play a chip removal role. The sprayed coolant can wash away the chips generated during the cutting process from the cutting area, avoiding the accumulation of chips between the tool 32 and the workpiece, affecting the processing accuracy and the life of the tool 32. At the same time, the coolant can also form a lubricating film between the tool 32 and the workpiece, reducing the cutting force and friction coefficient, and further improving the processing efficiency and quality.

[0056] Separation of milling cutter:

[0057] When the milling cutter body 3 is used up or needs to be replaced, the milling machine body 1 stops working. At this time, the rotation speed of the milling cutter body 3 gradually decreases, so that the centrifugal force on the counterweight block 2345 gradually decreases. When the centrifugal force on the counterweight block 2345 is not enough to overcome the elastic force of the reset spring, at this time, the reset spring will drive the counterweight block 2345 to reset along the slide groove. When the counterweight block 2345 is no longer in contact with the abutment block 2344, the abutment block 2344 loses its limit position, and the compression spring on the locking rod 2343 will pull the locking rod 2343 out of the locking hole 35. Under the cooperation of the abutment plate and the inclined surface of the locking rod 2343, the locking rod 2343 will drive the abutment block 2344 to move upward until the compression spring returns to its initial state, at which time the locking rod 2343 will disengage from the locking hole 35.

[0058] Then, the staff rotates the rotating ring 242 in the reverse direction. At this time, the ring gear 2421 in the rotating ring 242 will drive the bevel gear 2471 and the driving rod 247 to rotate in the reverse direction. With the cooperation of the thread, the limit plate 232 will move along the guide groove 231 until the limit block 233 on the limit plate 232 is separated from the limit groove 34 at the position of the tool handle 31. At this time, the limit plate 232 releases all limits on the milling cutter body 3, and the staff can remove the milling cutter body 3.

[0059] The present invention adopts the linear channel 33, the limiting plate 232 and the locking member 234, which has the following advantages:

[0060] Advantage 1: The linear channel 33 in the milling cutter body 3 can spray coolant from the tool 32. When the coolant is inside the milling cutter body 3, it can cool it down. The coolant sprayed from the linear channel 33 can play a chip removal role. The sprayed coolant can flush the chips generated during the cutting process away from the cutting area, avoiding the accumulation of chips between the tool 32 and the workpiece, affecting the workpiece processing accuracy and the life of the tool 32.

[0061] Advantage two, the ring gear 2421 in the driving member 24 is meshed with the bevel gear 2471. When the ring gear 2421 drives the bevel gear 2471 to rotate, the limit plate 232 can synchronously approach the center position of the fixed seat 22, so that the milling cutter body 3 is limited in the center, and the cutting force can be more evenly distributed on the tool 32 and the workpiece, avoiding the eccentricity of the milling cutter body 3 during installation, causing unbalanced cutting force, causing the milling cutter to bend and deform during the cutting process, affecting the normal cutting performance of the milling cutter.

[0062] Advantage three, by utilizing the driving member 24 to drive the limit plate 232 in the limit part 23 to move synchronously, the milling cutter body 3 can be quickly replaced, the replacement steps of the milling cutter body 3 are simplified, and the replacement process is time-saving. The rapid replacement of the milling cutter body 3 can greatly reduce the downtime of the milling machine, improve the utilization efficiency of the machine tool, and thus improve the processing efficiency of the workpiece.

[0063] Advantage four, the limit plate 232 cooperates with the limit block 233 and the limit slot 34 to realize the initial limit of the milling cutter body 3. When the rotation speed of the milling cutter body 3 increases, the centrifugal force on the counterweight block 2345 increases until the centrifugal force overcomes the elastic force of the reset spring itself. At this time, the locking rod 2343 will squeeze the abutment block 2344, so that the locking rod 2343 extends out and engages in the locking hole 35, thereby realizing the secondary limit of the milling cutter body 3. Under higher centrifugal force levels, a stronger constraint can be provided for the milling cutter body 3, further limiting the milling cutter body 3 to prevent the milling cutter body 3 from loosening or excessively vibrating under high-speed rotation, thereby affecting the machining accuracy of the milling cutter body 3 on the workpiece.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. 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 embodiments of the present invention.

Claims

1. A metal tool holder milling machine equipped with a microfluidic temperature control structure, characterized in that: include: Milling machine body (1); A mounting seat (2), the mounting seat (2) comprising a fixing plate (21), the fixing plate (21) being fixedly connected to a driving portion of a milling machine body (1), a fixing seat (22) being fixedly connected to a bottom end of the fixing plate (21), the fixing seat (22) being provided with a limiting portion (23) through a cavity provided inside the fixing seat (22), and a driving member (24) for adjusting the limiting portion (23) being provided on a circumferential outer surface of the fixing seat (22); A milling cutter body (3), the milling cutter body (3) comprising a shank (31) and a tool (32), the shank (31) and the tool (32) being designed as an integral whole, the shank (31) being detachably mounted in a fixing seat (22) via a limiting portion (23), a linear channel (33) for the flow of cooling liquid being provided inside the shank (31) and the tool (32), and a limiting slot (34) and a locking hole (35) being provided on the surface of the shank (31); The limiting portion (23) comprises a guide groove (231), the guide groove (231) is arranged at the bottom of the cavity, and a limiting plate (232) is slidably connected in the guide groove (231), a limiting block (233) which is fitted with the limiting groove (34) is fixedly connected to the limiting plate (232) on one side close to the central axis of the fixing seat (22), and a locking member (234) which can be used to lock the knife handle (31) is arranged in the limiting plate (232).

2. A metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 1, characterized in that: The driving member (24) comprises a ring frame (241), the ring frame (241) is fixedly connected to the circumferential outer surface of the fixing seat (22), the ring frame (241) is rotatably connected to a rotating ring (242) via an annular groove arranged inside the ring frame (241), and the inner side of the rotating ring (242) is fixedly connected to a gear ring (2421).

3. A metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 2, characterized in that: The top of the ring frame (241) is fixedly connected to a bracket (243), the bracket (243) is slidably connected to a clamping plate (244) through a rectangular hole arranged inside the bracket (243), the top of the clamping plate (244) is fixedly connected to a counterweight plate (245), and a limiting groove (246) is provided on the top of the rotating ring (242) to fit with the clamping plate (244).

4. The metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 1, characterized in that: A driving rod (247) is rotatably mounted in the guide groove (231), and the driving rod (247) passes through the fixed seat (22) and extends to the lower part of the rotating ring (242). The driving rod (247) is threadedly connected to the bottom end of the limiting plate (232) through a thread groove arranged on the outer surface of the circumference thereof, and the end of the driving rod (247) is fixedly connected to a bevel gear (2471) meshing with the gear ring (2421).

5. The metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 1, characterized in that: The locking member (234) comprises a transverse groove (2341) and a vertical groove (2342), and the transverse groove (2341) and the vertical groove (2342) are connected to each other, and the transverse groove (2341) and the vertical groove (2342) are both arranged inside the limiting plate (232), and two transverse grooves (2341) and two vertical grooves (2342) are respectively provided and are symmetrically distributed with the limiting plate (232) as the center.

6. A metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 5, characterized in that: A locking rod (2343) is slidably connected in the transverse groove (2341) and matches the inner wall of the locking hole (35); a contact block (2344) is slidably connected in the vertical groove (2342); the cross-section of the contact block (2344) is trapezoidal; a side of the locking rod (2343) close to the contact block (2344) is provided with an inclined surface that fits the contact block (2344); and the side wall of the locking rod (2343) is connected to the side wall of the limit plate (232) via a compression spring.

7. The metal tool holder milling machine equipped with a microfluidic temperature control structure according to claim 1, characterized in that: The limiting plate (232) is slidably connected to a counterweight block (2345) via sliding grooves provided on both sides thereof, and the middle portion of the counterweight block (2345) is connected to a vertical plate of the limiting plate (232) via a return spring.

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