A pressure hole clamping type indexable milling cutter

Abstract

The application discloses a pressure hole clamping type indexable milling cutter, which comprises a shaft body and the like; milling cutters are arranged on the shaft body; a locking pin is arranged on the milling cutter; a rectangular cavity is formed in the shaft body; the locking pin penetrates into the rectangular cavity of the shaft body; a pre-tightening assembly is arranged in the rectangular cavity of the shaft body; and a clamping mechanism is arranged on the shaft body; the clamping mechanism comprises an oil ring; the oil ring is mounted on the shaft body; and a pressure ring is sealingly connected in the oil ring. The hydraulic clamping mechanism formed by the oil ring, the pressure ring, a pipeline and a locking rod and the like is arranged; an operator only needs to rotate a screw rod; the pressure of the hydraulic oil can drive all the locking rods to move at the same time; and the synchronous locking or synchronous releasing effect of all the milling cutters can be realized.

Description

Technical Field

[0001] This invention relates to the field of milling cutter technology, and more particularly to an indexable milling cutter based on pressure hole clamping. Background Technology

[0002] Milling cutters are rotary cutting tools used for milling operations. They remove excess material from the workpiece through intermittent cutting with their teeth. They are mainly used for machining planes, steps, grooves, and shaped surfaces, as well as for cutting off workpieces. Their structures are divided into three categories: integral, insert-tooth, and indexable. According to their functions, they can be divided into cylindrical milling cutters, face milling cutters, end mills, and three-sided milling cutters.

[0003] Existing indexable end mills have the problem of cumbersome installation and fixing methods. Installing or indexing each end mill individually is complicated and inefficient. They lack convenient functions for simultaneous clamping and fixing and simultaneous release of limit switches. At the same time, it is difficult to control the indexing of a single end mill precisely, and it is impossible to balance installation stability and ease of operation. Summary of the Invention

[0004] To overcome the drawbacks of complex operations for installing or indexing each milling cutter individually, this invention provides a milling cutter that can be installed and indexed simultaneously based on pressure hole clamping.

[0005] A pressure-hole clamping indexable end mill includes a shaft body with end mills distributed on it. Each end mill has a locking pin. A rectangular cavity is formed within the shaft body, and the locking pin passes through this cavity. A pre-tightening assembly is located within the rectangular cavity. A clamping mechanism is mounted on the shaft body. The clamping mechanism includes an oil ring mounted on the shaft body. A pressure ring is sealed within the oil ring. A pipe is distributed and connected to the bottom of the oil ring, and the pipe passes through the rectangular cavity of the shaft body. Inside, a C-shaped pipe is connected to the pipe, and a one-way component is installed inside the pipe and the C-shaped pipe. One end of the pipe is connected to a sleeve, and a locking rod is installed inside the sleeve. An E-shaped pipe is connected to the end of the pipe near the sleeve, and another set of sleeves is connected to the E-shaped pipe. Multiple locking grooves are opened on the locking pin, and the symmetrical locking rods cooperate with the locking grooves. A tapered pipe is connected to the E-shaped pipe, and the E-shaped pipe and the tapered pipe are connected to the rectangular cavity of the shaft body by a fixed sleeve. An independent switching mechanism is installed inside the tapered pipe.

[0006] To further explain, the unidirectional component includes a ring one, a fixing frame one installed inside the pipe, a sealing head one provided on the fixing frame one, the sealing head one cooperating with the ring one, a ring two and a fixing frame two installed inside the C-shaped pipe, the fixing frame two provided with a sealing head two, the sealing head two cooperating with the ring two.

[0007] To further explain, the independent switching mechanism includes a ring three, and a fixed frame three is installed inside the tapered tube. A sealing head three is provided on the fixed frame three, and the sealing head three cooperates with the ring three. A pin is provided on the sealing head three, and a nut is threaded to one end of the pin.

[0008] Further explanation: the independent switching mechanism also includes a piston pad, a piston pad is provided inside the tapered tube, a piston rod is provided on the piston pad, the ejector pin passes through the piston pad and the piston rod and is slidably connected, the piston rod passes through the tapered tube and is slidably connected, a fixing plate is fixedly connected to one end of the piston rod, a threaded block is provided on the shaft, a second screw is rotatably connected to the fixing plate, and the second screw is threadedly connected to the threaded block.

[0009] Further explanation: It also includes a movable frame. An elastic element is provided in the rectangular cavity of the shaft. The movable frame is provided at one end of the elastic element. The movable frame cooperates with the locking pin. Fixed rods slide symmetrically inside the movable frame. Multiple locking holes are provided on the fixed rods. One of the fixed rods is connected to a fixed sleeve.

[0010] To further explain, it also includes an L-frame, which is fixedly connected to the fixed rod. A rotating rod is rotatably mounted on the L-frame. A symmetrically arranged thread wheel is provided on the rotating rod, and a nylon thread is wound on the thread wheel. An elastic rod passes through the movable frame, and the elastic rod cooperates with a lock hole. One end of the elastic rod is connected to the nylon thread.

[0011] To further explain, it also includes a pulley, a pulley that rotates on the rotating rod, a rotating shaft that rotates on one of the L-frames, a damping ring that is mounted on the rotating shaft, a one-way wheel that is mounted on the damping ring, and a belt that is wound between the one-way wheel and the pulley.

[0012] To further explain, rubber strips are circumferentially distributed on the one-way wheel, and the locking rod has toothed grooves that mate with the rubber strips.

[0013] To further explain, the pre-tightening assembly includes a horizontal plate, which is fixedly connected to the rectangular cavity of the shaft. A pre-tightening rod passes through one side of the horizontal plate, and another fixed rod is fixedly connected to the horizontal plate. The locking pin has multiple pre-tightening grooves, which cooperate with the pre-tightening rod.

[0014] To further explain, it also includes a threaded sleeve, which is fixedly connected to the shaft body, and a screw is rotatably connected to the irregular frame, which is threadedly connected to the threaded sleeve.

[0015] The beneficial effects of this invention are: 1. This invention, by setting up a hydraulic clamping mechanism composed of an oil ring, a pressure ring, pipes, and locking rods, allows the operator to drive all locking rods simultaneously by rotating a single screw, thereby achieving the effect of synchronous locking or release of all milling cutters through the pressure of hydraulic oil.

[0016] 2. By setting up an independent switching mechanism consisting of a ejector pin, piston pad, and sealing head, the hydraulic circuit of a single end mill can be controlled without releasing all other end mills, and the target end mill can be indexed or replaced individually. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of a partial structure of the present invention; Figure 4 This is a schematic cross-sectional view of the oil ring structure of the present invention; Figure 5 This is a schematic diagram of the clamping mechanism of the present invention; Figure 6 For the present invention Figure 5 A in the image is in a magnified view; Figure 7 This is a schematic diagram of the structure of the unidirectional component of the present invention; Figure 8 This is a schematic diagram of the structure of the mobile frame of the present invention; Figure 9 For the present invention Figure 5 B in the image is in a magnified view; Figure 10 This is a schematic diagram of the pre-tightening component of the present invention.

[0018] In the attached diagrams: 1. Shaft body; 2. Milling cutter; 3. Locking pin; 31. Preload groove; 32. Locking groove; 4. Horizontal plate; 41. Preload rod; 5. Oil ring; 51. Pressure ring; 52. Special-shaped bracket; 53. Pipe; 531. C-shaped pipe; 54. Sleeve; 541. Locking rod; 542. Toothed groove; 55. E-shaped pipe; 56. Tapered pipe; 58. Screw one; 57. Threaded sleeve; 6. Circular ring one; 61. Fixing bracket one; 62. Sealing head one; 7. Circular ring two; 71. Fixing bracket two; 72. Sealing head two; 8. Circular ring three. 81 Fixed bracket three, 82 Sealing head three, 9 Ejector pin, 91 Nut, 10 Piston pad, 1001 Piston rod, 1002 Fixed plate, 1003 Screw two, 1004 Threaded block, 11 Elastic element, 1101 Moving bracket, 12 Fixed rod, 1201 Locking hole, 13 L bracket, 1301 Rotating rod, 1302 Thread wheel, 1303 Nylon thread, 1304 Elastic rod, 14 Pulley, 1401 Rotating shaft, 1402 Damping ring, 1403 One-way wheel. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] Example 1:

[0021] A pressure hole clamping indexable end mill, such as Figures 1-5 As shown, it includes a shaft body 1, on which milling cutters 2 are distributed, and a locking pin 3 is connected through the milling cutter 2. A rectangular cavity is opened inside the shaft body 1, and the locking pin 3 passes through the rectangular cavity of the shaft body 1. A pre-tightening component is provided inside the rectangular cavity of the shaft body 1. The pre-tightening component is used to pre-tighten and fix the milling cutter 2. A clamping mechanism is provided on the shaft body 1. The clamping mechanism is used to fix the milling cutter 2. The clamping mechanism includes an oil ring 5, which is mounted on the shaft 1. A pressure ring 51 is sealed inside the oil ring 5. A pipe 53 is distributed and connected to the bottom of the oil ring 5. The pipe 53 passes through the rectangular cavity of the shaft 1. A C-shaped tube 531 is connected to the pipe 53. A one-way component is provided inside the pipe 53 and the C-shaped tube 531. One end of the pipe 53 is connected to a sleeve 54. A locking rod 541 is slidably connected inside the sleeve 54. An E-shaped tube is connected to the end of the pipe 53 near the sleeve 54. 55. Another set of sleeves 54 are connected to the E-type tube 55. Multiple locking grooves 32 are opened on the locking pin 3. The symmetrical locking rods 541 cooperate with the locking grooves 32. The tapered tube 56 is connected to the E-type tube 55. Hydraulic oil is filled in the oil ring 5, pipe 53, C-type tube 531, sleeve 54, E-type tube 55 and tapered tube 56. The E-type tube 55 and tapered tube 56 are connected to the rectangular cavity of the shaft 1 by a fixed sleeve. An independent switching mechanism is provided in the tapered tube 56.

[0022] like Figures 5-6 As shown, the unidirectional assembly includes a ring 6, a fixed connection between the ring 6 and a bracket 61 inside the pipe 53, a sealing head 62 connected to the bracket 61 via a spring, the sealing head 62 cooperating with the ring 6, a fixed connection between the ring 7 and a bracket 71 inside the C-shaped pipe 531, a sealing head 72 connected to the bracket 71 via a spring, the sealing head 72 cooperating with the ring 7.

[0023] like Figure 7 As shown, the independent switching mechanism includes a ring 3 8. The ring 3 8 and the fixed frame 3 81 are fixedly connected inside the tapered tube 56. The fixed frame 3 81 is connected to the sealing head 3 82 by a spring 4. The sealing head 3 82 cooperates with the ring 3 8. The sealing head 3 82 is fixedly connected to the ejector pin 9. One end of the ejector pin 9 is threaded, and a nut 91 is threaded onto the thread.

[0024] like Figure 1 and Figure 7As shown, the independent switching mechanism also includes a piston pad 10. The piston pad 10 is slidably connected inside the tapered tube 56. A piston rod 1001 is fixedly connected to the piston pad 10. A pin 9 passes through the piston pad 10 and the piston rod 1001 and is slidably connected in a sealed manner. The piston rod 1001 passes through the tapered tube 56 and is slidably connected in a sealed manner. A fixing plate 1002 is fixedly connected to one end of the piston rod 1001. A threaded block 1004 is fixedly connected to the shaft 1. A screw 1003 is rotatably connected to the fixing plate 1002. The screw 1003 is threadedly connected to the threaded block 1004.

[0025] like Figure 5 and Figure 8 As shown, it also includes a movable frame 1101. An elastic element 11 is connected inside the rectangular cavity of the shaft 1. One end of the elastic element 11 is connected to the movable frame 1101. The movable frame 1101 cooperates with the locking pin 3. A fixed rod 12 slides symmetrically inside the movable frame 1101. Multiple locking holes 1201 are opened on the fixed rod 12. One of the fixed rods 12 is connected to the fixed sleeve.

[0026] like Figures 8-9 As shown, it also includes an L-frame 13, with the L-frame 13 symmetrically fixed to the fixed rod 12. A rotating rod 1301 is rotatably connected to the L-frame 13, and a spool 1302 is symmetrically mounted on the rotating rod 1301. A nylon line 1303 is wound on the spool 1302. An elastic rod 1304 is slidably connected through the movable frame 1101. The elastic rod 1304 cooperates with the lock hole 1201, and one end of the elastic rod 1304 is connected to the nylon line 1303.

[0027] like Figures 8-9 As shown, it also includes a pulley 14, which is rotatably connected to the rotating rod 1301. A rotating shaft 1401 is rotatably connected to one of the L-frames 13. A damping ring 1402 is installed on the rotating shaft 1401. A one-way wheel 1403 is installed on the damping ring 1402. A belt is wound between the one-way wheel 1403 and the pulley 14.

[0028] like Figure 9 As shown, rubber strips are circumferentially installed on the one-way wheel 1403, and the locking rod 541 has a toothed groove 542 that mates with the rubber strips.

[0029] like Figures 3-5 , Figure 10 As shown, the pre-tightening assembly includes a horizontal plate 4. The horizontal plate 4 is fixedly connected to the rectangular cavity of the shaft body 1. A pre-tightening rod 41 passes through one side of the horizontal plate 4. A spring is connected between the horizontal plate 4 and the pre-tightening rod 41. Another fixing rod 12 is fixedly connected to the horizontal plate 4. Multiple pre-tightening grooves 31 are provided on the locking pin 3. The pre-tightening grooves 31 cooperate with the pre-tightening rod 41.

[0030] like Figure 1 and Figure 4As shown, it also includes a threaded sleeve 57, which is fixedly connected to the shaft 1. The special frame 52 is rotatably connected to a screw 58, which is threadedly connected to the threaded sleeve 57.

[0031] When using the pressure hole clamping indexable end mill 2, the operator first attaches the end mill 2 to the shaft 1. Then, the locking pin 3 is inserted into the end mill 2, passing through the rectangular cavity between the end mill 2 and the shaft 1. At this time, the preload rod 41 is in a downward-extending state due to the spring 1. When the locking pin 3 is inserted into the rectangular cavity of the shaft 1 and contacts the preload rod 41, the locking pin 3 pushes the preload rod 41 upward during insertion and movement, causing the spring 1 to extend. As the locking pin 3 moves, the preload rod 41 slides along the surface of the locking pin 3, and the preload rod 41 will enter the locking groove. Within 32, and the spring returns to its original position, the operator continues to push the locking pin 3 into the rectangular cavity of the shaft 1, and squeezes the preload rod 41 upward again, causing the spring to extend. When the locking pin 3 is fully embedded in the milling cutter 2, it stops the movement of the locking pin 3. At the same time, the preload rod 41 is embedded in the preload groove 31 on the locking pin 3. By applying pressure to the preload rod 41 through the spring returning to its original position, the locking pin 3 can drive the milling cutter 2 to achieve a preliminary preload fixing effect. By pushing the locking pin 3, the milling cutter 2 can be quickly installed with the shaft 1, and the installation efficiency is effectively improved.

[0032] When the milling cutter 2 is initially pre-tightened with the shaft 1 by the locking pin 3, the operator turns the screw 58. As the screw 58 rotates, it moves downward along the threaded sleeve 57. This downward movement of the screw 58 drives the profiled frame 52 downward, causing the pressure ring 51 to slide along the inner wall of the oil ring 5. At this time, the pressure ring 51 compresses the hydraulic oil within the oil ring 5, generating pressure as it flows downward. The hydraulic oil within the oil ring 5 flows downward through the evenly distributed pipes 53. A portion of the hydraulic oil flows into the C-shaped pipe 531. The initial state of the ring 6 and... Sealing head 62 is in a closed contact and sealing state, as is sealing head 72 and ring 7. Due to the pressure generated by the downward flow of hydraulic oil, sealing head 72 pushes ring 7, creating a seal. Therefore, the hydraulic oil in C-tube 531 remains stationary. Simultaneously, the hydraulic oil in pipe 53 pushes sealing head 62 to compress spring 2, causing sealing head 62 to disengage from ring 6. The hydraulic oil then continues to flow downwards through ring 6. As the hydraulic oil flows through pipe 53, a portion of it enters E. Inside the E-tube 55, another portion of the hydraulic oil flows into the sleeve 54 and squeezes the locking rod 541. When the hydraulic oil in the E-tube 55 flows, it enters the tapered tube 56. Since the sealing head 82 and the ring 8 are in contact and sealed inside the tapered tube 56, the pressure of the hydraulic oil flow causes the sealing head 82 to apply pressure to the ring 8. Therefore, the hydraulic oil in the tapered tube 56 is in a static state. At this time, the hydraulic oil in the E-tube 55 flows into another set of sleeves 54. At the same time, the hydraulic oil pushes the symmetrical locking rod 541 to slide towards the locking groove 32 through pressure. When the locking rod 541 slides... When the pin is embedded in the locking groove 32 during the process, it achieves the function of clamping and fixing the locking pin 3. At this time, the bottom of the special-shaped frame 52 is in contact with the top of the oil ring 5. The operator stops rotating the screw 58. Through the cooperation of the screw 58 and the threaded sleeve 57, the movement of the special-shaped frame 52 can be prevented. At this time, the hydraulic oil in the pipe 53, C-shaped pipe 531, sleeve 54, E-shaped pipe 55 and tapered pipe 56 is in a static state. By pushing the hydraulic oil downward by the special-shaped frame 52, the milling cutter 2 can be clamped and fixed synchronously, and the problem of installing and fixing the milling cutter 2 separately can be effectively solved, thus improving the installation efficiency of the milling cutter 2.

[0033] When it is necessary to fully index the milling cutters 2 on the shaft 1, the operator reverses the screw 58. The screw 58 gradually moves upward along the threaded sleeve 57, and the special-shaped bracket 52 moves upward synchronously with the screw 58. This causes the pressure ring 51 to slide upward along the inner wall of the oil ring 5. When the pressure ring 51 moves upward, it no longer exerts pushing pressure on the hydraulic oil in the pipe 53, C-type pipe 531, sleeve 54, E-type pipe 55, and tapered pipe 56. At this time, the pressure ring 51 moves upward and generates an upward suction force. The hydraulic oil in the tapered pipe 56, E-type pipe 55, and sleeve 54 flows upward along the pipe 53. During the upward flow of the hydraulic oil, it attracts the symmetrical locking rod 541 and disengages it from the locking groove 32. At this time, the locking rod 541 no longer clamps and fixes the locking pin 3, thus realizing the synchronous release of the milling cutter 2's limit function. At this time, the operator can index and replace the milling cutter 2. When the tapered pipe 5 When the hydraulic oil in the tapered tube 56 flows into the E-tube 55, the ejector pin 9 is fixed by the nut 91, which limits the movement of the sealing head 82. When the hydraulic oil in the tapered tube 56 flows into the E-tube 55, the suction force causes the sealing head 82 to remain stationary. At this time, the hydraulic oil enters the C-tube 531 along the pipe 53. Since the sealing head 62 and the ring 6 restrict the upward flow of the hydraulic oil, the hydraulic oil in the C-tube 531 compresses the sealing head 72 and the spring 3 through the suction force, causing the sealing head 72 to detach from the ring 7. The hydraulic oil in the C-tube 531 flows back into the pipe 53 through the ring 7 and enters the oil ring 5 through the evenly distributed pipe 53. At this time, the screw 58 is turned in the stop direction. When all the milling cutters 2 have been rotated, the screw 58 is turned again. The above steps are repeated to achieve the function of clamping and fixing all the milling cutters 2. When the indexing of the individual milling cutter 2 is required, the operator needs to tighten the nut 91 corresponding to the indexing milling cutter 2. When the nut 91 rotates and disengages from the ejector pin 9, the ejector pin 9 is released from its limit. The operator then pushes the ejector pin 9 with a tool (such as a screwdriver or a cylindrical object), causing the ejector pin 9 to slide along the inner wall of the piston rod 1001 and the piston pad 10. Simultaneously, the ejector pin 9 presses against the sealing head 82, causing the sealing head 82 to disengage from the annulus 8 and compressing the spring 4. The sealing head 82 no longer seals against the annulus 8, allowing the hydraulic oil in the tapered tube 56 to flow to one side of the tapered tube 56. When the operator turns the screw 1003 to disengage from the threaded block 1004, the movement distance of the piston rod 1001 is no longer restricted. The operator then uses the fixing plate 1002 to drive the piston rod 1001 and piston pad 10 to slide along the inner wall of the tapered tube 56. When the piston pad 10 moves, it generates a suction force, causing the hydraulic oil in the E-type tube 55, pipe 53, C-type tube 531, and sleeve 54 to enter one end of the tapered tube 56. This causes the hydraulic oil in the sleeve 54 to attract the corresponding locking rod 541 and disengage it from the locking groove 32. At this point, the operator uses a tool to disengage the ejector pin 9 and retract the spring. Spring 4 drives sealing head 3 82 to adhere to and seal with ring 3 8, thereby realizing the indexing function of the individual milling cutter 2. It should be noted that when the hydraulic oil in pipe 53 and C-shaped pipe 531 flows into tapered pipe 56, the suction force generated by piston pad 10 is insufficient to compress spring 2 with sealing head 1 62. Therefore, sealing head 1 62 continues to seal ring 1 6, keeping the hydraulic oil in the upper section of pipe 53 stationary. When the indexing of the individual milling cutter 2 is completed, it pushes the fixed plate 1002 to move the piston rod 1001, thereby causing piston pad 10 to push the hydraulic oil in tapered pipe 56. The hydraulic oil flows under pressure, causing the sealing head 3 82 to compress the spring 4, which in turn causes the sealing head 3 82 to disengage from the ring 3 8. At this time, the hydraulic oil in the tapered tube 56 enters the E-type tube 55, the C-type tube 531 and the sleeve 54, which in turn enables the locking rod 541 to lock and fix the locking groove 32. At the same time, the nut 91 is re-threaded to the ejector pin 9, and the movement of the sealing head 3 82 is restricted. Then, the screw 2 1003 is threaded to the threaded block 1004, and the movement of the piston rod 1001 is restricted. This achieves the effect of indexing the individual milling cutter 2.

[0034] In the initial state, the elastic element 11 drives the movable frame 1101 to be in an extended state, and the elastic rod 1304 drives the nylon line 1303 to be in an inclined direction and in a taut state. When the locking pin 3 passes through the rectangular cavity of the shaft 1, the locking pin 3 continues to move and contacts the movable frame 1101, compressing the elastic element 11. At this time, the movable frame 1101 slides along the symmetrical fixed rod 12. When the locking pin 3 is limited by the milling cutter 2 during its movement, it means that the locking pin 3 is completely embedded in the milling cutter 2. When the movable frame 1101 slides along the symmetrical fixed rod 12, it drives the elastic rod 1304 to move, thereby causing the nylon line 1303 to be in a relaxed state. When the movable frame 1101 drives the elastic rod 1304 to move, the elastic rod 1303... 304 contacts the fixed rod 12 and squeezes the elastic rod 1304 to slide to one side. When the elastic rod 1304 corresponds to the lock hole 1201 on the fixed rod 12, the elastic rod 1304 is driven by its own elastic force to embed into the lock hole 1201 and limit the moving frame 1101 to prevent the elastic element 11 from releasing and causing the moving frame 1101 to move. At this time, the moving frame 1101 is always in contact with one side of the locking pin 3. When the symmetrical locking rods 541 slide away from each other and disengage from the locking groove 32, when one of the locking rods 541 moves, the rubber strip on the one-way wheel 1403 contacts the side wall of one of the locking rods 541 and generates friction. At this time, due to the obstruction of the damping ring 1402, the one-way wheel 1403... There is no rotation. When one of the locking rods 541 moves away from the locking groove 32, the toothed groove 542 on one of the locking rods 541 engages with the rubber strip on the one-way wheel 1403. At this time, the engagement of the toothed groove 542 with the rubber strip on the one-way wheel 1403 drives the one-way wheel 1403 to rotate. At this time, the engagement of the rubber strip with the toothed groove 542 overcomes the resistance of the nylon ring 1402, thereby causing the one-way wheel 1403 to drive the pulley 14 to rotate via the belt. The pulley 14 drives the rotating rod 1301 to rotate, thereby causing the spool 1302 to wind up the nylon line 1303. At this time, the nylon line 1303 drives the elastic rod 1304 to extend to one side along the moving frame 1101 and disengage from the fixed rod 12. The locking hole 1201 on the upper part of the elastic element 11 drives the moving frame 1101 to release. When the moving frame 1101 releases and pushes the locking pin 3, the pre-tightening groove 31 on the locking pin 3 squeezes the pre-tightening rod 41, thereby causing the pre-tightening rod 41 to disengage from the pre-tightening groove 31. This causes the moving frame 1101 to pop the corresponding locking pin 3 away from the end mill 2, thus realizing the function of the locking pin 3 automatically disengaging from the end mill 2, which facilitates the individual replacement or indexing of the end mill 2. It should be noted that when the symmetrical locking rods 541 move relative to each other, one of the locking rods 541 contacts the one-way wheel 1403. At this time, the one-way wheel 1403 is in an idle state and will not drive the pulley 14 to rotate. Therefore, the spool 1302 remains stationary.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-hole clamping indexable end mill, comprising a shaft (1), on which end mills (2) are distributed, and on which locking pins (3) are provided, and a rectangular cavity is formed inside the shaft (1), and the locking pins (3) penetrate through the rectangular cavity of the shaft (1), characterized in that: The rectangular cavity of the shaft (1) is provided with a pre-tightening assembly, and the shaft (1) is provided with a clamping mechanism; The clamping mechanism includes an oil ring (5), which is mounted on the shaft (1). A pressure ring (51) is sealed inside the oil ring (5). A pipe (53) is distributed and connected to the bottom of the oil ring (5). The pipe (53) passes through the rectangular cavity of the shaft (1). A C-shaped tube (531) is connected to the pipe (53). A one-way component is provided inside the pipe (53) and the C-shaped tube (531). A sleeve (54) is connected to one end of the pipe (53). A locking rod (5) is provided inside the sleeve (54). 41), the pipe (53) is connected to an E-type pipe (55) near the sleeve (54), and another set of sleeves (54) is connected to the E-type pipe (55). Multiple locking grooves (32) are provided on the locking pin (3). The symmetrical locking rod (541) cooperates with the locking groove (32). A tapered pipe (56) is connected to the E-type pipe (55). The E-type pipe (55) and the tapered pipe (56) are connected to the rectangular cavity of the shaft (1) by a fixed sleeve. An independent switching mechanism is provided in the tapered pipe (56).

2. The indexable end mill based on pressure hole clamping as described in claim 1, characterized in that: The unidirectional component includes a ring one (6), and a ring one (6) and a fixing frame one (61) are installed inside the pipe (53). A sealing head one (62) is provided on the fixing frame one (61), and the sealing head one (62) cooperates with the ring one (6). A ring two (7) and a fixing frame two (71) are installed inside the C-shaped pipe (531). A sealing head two (72) is provided on the fixing frame two (71), and the sealing head two (72) cooperates with the ring two (7).

3. The indexable end mill based on pressure hole clamping according to claim 1, characterized in that: The independent switching mechanism includes a ring three (8), and a ring three (8) and a fixing frame three (81) are installed inside the tapered tube (56). The fixing frame three (81) is provided with a sealing head three (82), which cooperates with the ring three (8). The sealing head three (82) is provided with a pin (9), and one end of the pin (9) is threaded with a nut (91).

4. The indexable end mill based on pressure hole clamping according to claim 3, characterized in that: The independent switching mechanism also includes a piston pad (10), a piston pad (10) is provided inside the tapered tube (56), a piston rod (1001) is provided on the piston pad (10), a pin (9) passes through the piston pad (10) and the piston rod (1001) and is slidably connected, the piston rod (1001) passes through the tapered tube (56) and is slidably connected, a fixing plate (1002) is fixedly connected to one end of the piston rod (1001), a threaded block (1004) is provided on the shaft (1), a screw rod (1003) is rotatably connected to the fixing plate (1002), and the screw rod (1003) is threadedly connected to the threaded block (1004).

5. A pressure hole-based indexable end mill according to claim 1, characterized in that: It also includes a movable frame (1101), an elastic element (11) is provided in the rectangular cavity of the shaft (1), a movable frame (1101) is provided at one end of the elastic element (11), the movable frame (1101) cooperates with the locking pin (3), a fixed rod (12) is symmetrically slidable in the movable frame (1101), a plurality of locking holes (1201) are provided on the fixed rod (12), one of the fixed rods (12) is connected to the fixed sleeve.

6. A pressure hole-based indexable end mill according to claim 5, characterized in that: It also includes an L-frame (13), the L-frame (13) is fixedly connected to the fixed rod (12), the L-frame (13) has a rotating rod (1301) that rotates on it, the rotating rod (1301) has symmetrically arranged thread wheels (1302) on it, the thread wheels (1302) are wound with nylon thread (1303), the movable frame (1101) has an elastic rod (1304) that passes through it, the elastic rod (1304) cooperates with the lock hole (1201), and one end of the elastic rod (1304) is connected to the nylon thread (1303).

7. A pressure hole-based indexable end mill according to claim 6, characterized in that: It also includes a pulley (14), on which the pulley (14) rotates, and on one of the L-frames (13) a rotating shaft (1401) rotates, on which a damping ring (1402) is installed, and on which a one-way wheel (1403) is installed, and a belt is wound between the one-way wheel (1403) and the pulley (14).

8. A pressure hole-based indexable end mill according to claim 7, characterized in that: Rubber strips are circumferentially installed on the one-way wheel (1403), and the locking rod (541) has a toothed groove (542) that mates with the rubber strips.

9. A pressure hole-based indexable end mill according to claim 5, characterized in that: The pre-tightening assembly includes a horizontal plate (4), which is fixedly connected to the rectangular cavity of the shaft (1). A pre-tightening rod (41) passes through one side of the horizontal plate (4), and another fixed rod (12) is fixedly connected to the horizontal plate (4). Multiple pre-tightening grooves (31) are provided on the locking pin (3), and the pre-tightening grooves (31) cooperate with the pre-tightening rod (41).

10. A pressure hole-based indexable end mill according to claim 9, characterized in that: It also includes a threaded sleeve (57), the threaded sleeve (57) is fixedly connected to the shaft (1), the special frame (52) is rotatably connected to a screw (58), and the screw (58) is threadedly connected to the threaded sleeve (57).

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