A precision thread milling apparatus

Abstract

The present application relates to the technical field of milling equipment, in particular to a precision thread milling equipment, comprising: a longitudinal shaft mechanism and a transverse shaft mechanism, used for driving a lifting mechanism to move in an XY axis coordinate system; the lifting mechanism is used for driving a connecting table to lift; a milling cutter, comprising a face milling cutter fixedly rotating in the connecting table and a keyway milling cutter, the keyway milling cutter is arranged through the inside of the face milling cutter; a driving motor, when rotating, drives the face milling cutter and the keyway milling cutter to synchronously and concentrically rotate through a shaft coupling; a pressing switching mechanism is fixed with the connecting table and arranged above the face milling cutter, the lifting mechanism is used for driving the connecting table to move upwards to start the pressing switching mechanism, so that the end of the keyway milling cutter extends out of the end of the face milling cutter or enters the end of the face milling cutter, the keyway milling cutter and the face milling cutter concentrically rotate, and when switching is completed, it is not necessary to calibrate again, and the processing efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of milling equipment, in particular to a precise thread milling equipment. BACKGROUND

[0002] Precise milling of roller screw is a high-precision milling process for processing roller screw, mainly used for moving the outer wall of the product by cooperating with the driving milling cutter on the surface of the screw or roller, and milling the outer surface of the product, wherein the milling cutter is generally divided into face milling cutter and keyway milling cutter.

[0003] The teeth of the face milling cutter are distributed on the end face of the milling cutter, mainly used for processing plane, which has a large cutting edge width and diameter, and can perform large feed cutting with high processing efficiency.

[0004] The cylindrical surface and end face of the keyway milling cutter have cutting edges, and the cutting edges of the cylindrical surface are main cutting edges, and the end face cutting edges play an auxiliary cutting role, which can be used for processing various shaped grooves, contours and steps.

[0005] Because the functions of the face milling cutter and the keyway milling cutter are different, the milling cutter needs to be replaced when generating some products, for example, in the process of generating motor end plate, the face milling cutter can be used to process the upper and lower planes of the end plate, so as to meet the required flatness and surface roughness requirements, and provide a good foundation for subsequent assembly and use, if the motor end plate has a heat dissipation groove, a lead groove and other groove structures, the face milling cutter needs to be replaced by the keyway milling cutter for milling, and different shapes and sizes of grooves can be processed by controlling the path and cutting parameters of the cutter.

[0006] However, the prior art still has the following problems: the milling cutter needs to be replaced frequently during the generation process; the accuracy needs to be calibrated by manual or intelligent equipment after replacing the milling cutter, which reduces the processing efficiency; therefore, the present application provides a precise thread milling equipment. SUMMARY

[0007] The purpose of the present application is to solve the problem of low functionality of the milling equipment.

[0008] In order to achieve the above purpose, the present application adopts the following technical scheme: a precise thread milling equipment, comprising an equipment body, further comprising:

[0009] A longitudinal axis mechanism and a transverse axis mechanism are used to drive the lifting mechanism to move in the XY axis coordinate system, wherein the longitudinal axis mechanism and the transverse axis mechanism are perpendicular to each other, and the lifting mechanism is located on the longitudinal axis mechanism, wherein the XY axis coordinate system is established by the longitudinal axis mechanism and the transverse axis mechanism, and the connection point of the longitudinal axis mechanism and the transverse axis mechanism is the coordinate origin;

[0010] A lifting mechanism is used to drive the lifting of the connecting table.

[0011] The milling cutter includes a face milling cutter and a keyway milling cutter that are fixedly rotated within the connecting table, with the keyway milling cutter being disposed through the interior of the face milling cutter.

[0012] The drive motor, when rotating, drives the face milling cutter and the slot milling cutter to rotate synchronously and concentrically through the coupling;

[0013] The press-to-switch mechanism is fixed to the connecting platform and positioned above the face milling cutter. The lifting mechanism is used to drive the connecting platform to move upward and activate the press-to-switch mechanism, causing the end of the keyway milling cutter to extend out of or into the end of the face milling cutter. When the press-to-switch mechanism is activated, the lifting mechanism drives the connecting platform to reset.

[0014] Preferably, the press-to-switch mechanism includes:

[0015] A mounting bracket is fixed to the surface of the connecting platform.

[0016] The guide sleeve is fixed to the mounting bracket;

[0017] The push rod is slidably connected within the guide sleeve.

[0018] A linear rotary cam is located at the bottom of the push rod;

[0019] The transmission rod is rotatably connected to the bottom of the linear rotary cam, and the bottom end of the transmission rod extends rotatably into the face milling cutter.

[0020] The springback mechanism is located inside the face milling cutter. The top of the keyway milling cutter passes through the springback mechanism and is fixed to the bottom of the transmission rod. The face milling cutter drives the keyway milling cutter to rotate synchronously through the transmission rod.

[0021] Preferably, the transmission rod has a drive groove along its length on its surface, and a drive bar that matches the drive groove is fixed on the inner wall of the face milling cutter.

[0022] Preferably, when the push rod is pressed down, the push rod drives the linear rotary cam to enter the deep or shallow recesses sequentially opened on the surface of the guide sleeve with the help of the spring mechanism. When the linear rotary cam enters the deep recess, the keyway cutter extends to the outside of the face cutter. When the linear rotary cam enters the shallow recess, the keyway cutter is located inside the face cutter.

[0023] Preferably, the top surface of the linear rotary cam is provided with an inclined surface facing one side, and the bottom surface of the push rod and the guide sleeve are both provided with abutting surfaces adapted to the inclined surface. The abutting surfaces adapted to the inclined surface are used to guide the linear rotary cam into the shallow or deep recess.

[0024] Preferably, the springback mechanism includes a fixed ring and a spring. The fixed ring is horizontally fixed inside the face milling cutter, and the spring is disposed between the fixed ring and the bottom end of the transmission rod. The top end of the keyway milling cutter passes through the fixed ring and the spring in sequence, and the keyway milling cutter is detachably fixed to the bottom end of the transmission rod.

[0025] Preferably, the horizontal axis mechanism includes a second motor, a second ball screw, and a second screw sleeve. The second motor is fixed to one side of the equipment body, the second ball screw is fixed to the rotating end of the second motor, the other end of the second ball screw is rotatably connected to the equipment body, and the second screw sleeve is rotatably connected to the surface of the second ball screw. The second motor drives the second ball screw to rotate, thereby causing the second screw sleeve to move on the surface of the second ball screw.

[0026] Preferably, the longitudinal axis mechanism includes a first motor, a crescent-shaped telescopic rod, a guide bar, a transmission assembly, a ball screw, and a screw sleeve. The ball screw is rotatably connected to one side of the screw sleeve, and the other end of the ball screw is rotatably connected to the equipment body. The first motor is fixed to one side of the equipment body. The crescent-shaped telescopic rod is fixed to the rotating end of the first motor. The other end of the crescent-shaped telescopic rod is fixedly engaged with the transmission assembly. The transmission assembly is used to drive the ball screw to rotate. The screw sleeve is rotatably provided on the surface of the ball screw. When the screw sleeve moves, it drives the crescent-shaped telescopic rod to extend and retract synchronously through the transmission assembly.

[0027] Preferably, the transmission assembly includes a connecting frame, which is fixed to one side of the lead screw sleeve. A fixed column is fixed to one side of the top of the connecting frame. A second bevel gear is rotatably connected to the end of the fixed column. A first bevel gear is fixed to the telescopic end of the crescent-shaped telescopic rod. The first bevel gear meshes with the second bevel gear. One end of the second bevel gear is transmitted to the ball screw through a transmission belt.

[0028] Preferably, one end of the connecting platform is sleeved on the surface of the lifting mechanism, and the lifting mechanism is fixed to the lead screw sleeve; the drive motor is fixed on the top surface of the connecting platform, and a coupling is provided at the top of the face milling cutter, and the face milling cutter is linked to the rotating end of the drive motor through the coupling.

[0029] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0030] The milling cutter is moved to the machining position via the longitudinal and transverse axis mechanisms. The upright block is activated in the forward direction, driving the connecting platform upwards. The push rod contacts and presses down inside the equipment body. The self-locking motor starts in the reverse direction, resetting the milling cutter and completing self-locking. The keyway milling cutter extends outside the face milling cutter. When only the face milling cutter is used, the same operation is performed, resetting the keyway milling cutter back into the face milling cutter. These operations can be completed without stopping the drive motor, avoiding frequent starting and stopping of the drive motor when changing milling cutters. This increases the lifespan of the drive motor and ensures a stable rotational speed upon cutter switching (eliminating the waiting time for speed stabilization compared to existing technologies), resulting in higher machining efficiency. The keyway milling cutter and face milling cutter rotate concentrically, eliminating the need for recalibration upon switching, further improving machining efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of a precision thread milling device according to the present invention;

[0033] Figure 2 This is a schematic diagram of the longitudinal axis mechanism and the transverse axis mechanism of the present invention;

[0034] Figure 3 This is a schematic diagram of the longitudinal axis mechanism of the present invention;

[0035] Figure 4 This is a schematic diagram of the coupling structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection structure between the pressing switching mechanism and the keyway milling cutter of the present invention;

[0037] Figure 6 This is a schematic diagram of the internal structure of the face milling cutter of the present invention.

[0038] Reference numerals: 1. Equipment body; 2. Longitudinal axis mechanism; 20. First motor; 21. Crescent-shaped telescopic rod; 22. Guide bar one; 23. Transmission assembly; 230. First bevel gear; 231. Second bevel gear; 232. Fixed column; 233. Connecting frame; 234. Transmission belt; 24. Ball screw one; 25. Screw sleeve one; 3. Horizontal axis mechanism; 30. Second motor; 31. Ball screw two; 32. Screw sleeve two; 33. Guide bar two; 4. Lifting mechanism; 40. Self-locking mechanism 41. Motor; 5. Block; 6. Drive motor; 7. Connecting platform; 8. Coupling; 9. Third bevel gear; 10. Fourth bevel gear; 11. Milling cutter; 12. Face milling cutter; 13. Drive bar; 14. Keyway milling cutter; 15. Press-to-switch mechanism; 16. Fixing frame; 17. Guide sleeve; 18. Deep notch; 19. Shallow notch; 10. Push rod; 11. Linear rotary cam; 12. Transmission rod; 13. Drive groove; 14. Springback mechanism; 15. Fixing ring; 16. Spring. Detailed Implementation

[0039] The objectives, technical solutions, and advantages of the embodiments of the present invention will be made clearer below. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] The present invention will be further described below with reference to embodiments. (Refer to...) Figures 1 to 3 This invention provides a technical solution: a precision thread milling device, comprising: a device body 1, a longitudinal axis mechanism 2, a transverse axis mechanism 3, a lifting mechanism 4, a drive motor 5, a connecting table 6, a coupling 7, and a milling cutter 8; the longitudinal axis mechanism 2 and the transverse axis mechanism 3 are used to drive the lifting mechanism 4 to move within the XY axis coordinate system; the milling cutter 8 includes a face milling cutter 80 and a keyway milling cutter 81 fixedly rotating within the connecting table 6, the keyway milling cutter 81 being disposed through the interior of the face milling cutter 80; when the drive motor 5 rotates, it drives the face milling cutter 80 and the keyway milling cutter 81 to rotate synchronously through the coupling 7; a pressing switching mechanism 9 is fixed to the connecting table 6 and disposed above the face milling cutter 80; the lifting mechanism 4 is used to drive the connecting table 6 to move upward to activate the pressing switching mechanism 9, causing the end of the keyway milling cutter 81 to extend out of or into the end of the face milling cutter 80; when the pressing switching mechanism 9 is activated, the lifting mechanism 4 drives the connecting table 6 to reset.

[0041] like Figure 2 As shown, the horizontal axis mechanism 3 includes a second motor 30, a second ball screw 31, and a second screw sleeve 32. The second motor 30 is fixed inside one side of the equipment body 1. The second ball screw 31 is fixed to the rotating end of the second motor 30. The other end of the second ball screw 31 is rotatably connected inside the equipment body 1. The second screw sleeve 32 is rotatably connected to the surface of the second ball screw 31. The second motor 30 drives the second ball screw 31 to rotate, thereby causing the second screw sleeve 32 to move on the surface of the second ball screw 31.

[0042] like Figure 2As shown, the longitudinal axis mechanism 2 includes a first motor 20, a crescent-shaped telescopic rod 21, a guide bar 22, a transmission assembly 23, a ball screw 24, and a screw sleeve 25. The ball screw 24 is rotatably connected to one side of the screw sleeve 25, and the other end of the ball screw 24 is rotatably connected inside the equipment body 1. The first motor 20 is fixed inside the equipment body 1 on one side. The crescent-shaped telescopic rod 21 is fixed to the rotating end of the first motor 20, and the other end of the crescent-shaped telescopic rod 21 is fixedly engaged with a transmission assembly. Component 23, transmission component 23 is used to drive the ball screw 24 to rotate, and the ball screw 24 rotates the screw sleeve 25 on its surface; when the screw sleeve 32 moves, it drives the crescent-shaped telescopic rod 21 to extend and retract synchronously through the transmission component 23. When the first motor 20 drives the crescent-shaped telescopic rod 21 to rotate, the crescent-shaped telescopic rod 21 drives the ball screw 24 to rotate on one side of the screw sleeve 32 through the transmission component 23, and the ball screw 24 drives the screw sleeve 25 to move on its surface.

[0043] like Figure 2 , Figure 3 As shown, the transmission assembly 23 includes a connecting frame 233, which is fixed to one side of the lead screw sleeve 32. A fixing post 232 is fixed to one side of the top of the connecting frame 233. A second bevel gear 231 is rotatably connected to the end of the fixing post 232. A first bevel gear 230 is fixed to the telescopic end of the crescent-shaped telescopic rod 21. The first bevel gear 230 meshes with the second bevel gear 231. One end of the second bevel gear 231 is transmitted to the ball screw 24 through the transmission belt 234.

[0044] Guide bar 22 is fixed inside the equipment body 1, and passes through connecting frame 233, which slides on the surface of guide bar 22. Guide bar 33 is fixed to one side of lead screw sleeve 32, and the other end of guide bar 33 is fixed inside the equipment body 1. Guide bar 33 passes through lead screw sleeve 25, which slides on the surface of guide bar 33, allowing for smoother movement of lead screw sleeve 22 and lead screw sleeve 25. The first motor 20 and the second motor 30 are fixed to the same side inside the equipment body 1, reducing the space of the equipment body 1 and allowing for greater movement space on the X and Y axes.

[0045] Specifically, the end of the fixed column 232 extends into the second bevel gear 231 and is rotatably fixed to the second bevel gear 231 via a bearing. A connecting column is fixed to the side of the first bevel gear 230 near the fixed column 232. The connecting column passes through the fixed column 232, and a pin is provided at the end of the connecting column away from the first bevel gear 230. The pin is used to restrict the first bevel gear 230 from meshing with the second bevel gear 231. When the fixed column 232 moves, the crescent-shaped telescopic rod 21 is extended or retracted through the connecting column, so that the first bevel gear 230 is always meshed with the second bevel gear 231.

[0046] In use, the second motor 30 drives the second ball screw 31 to rotate, the second ball screw 31 drives the second screw sleeve 32 to move along its length, the second screw sleeve 32 drives the connecting frame 233 to move, and the connecting frame 233 drives the crescent-shaped telescopic rod 21 to extend and retract synchronously through the fixed column 232; the first motor 20 drives the first bevel gear 230 to rotate through the crescent-shaped telescopic rod 21, the first bevel gear 230 drives the transmission belt 234 to rotate through the second bevel gear 231, the transmission belt 234 drives the first screw sleeve 25 to move along its length through the first ball screw 24, and the first screw sleeve 25 drives the lifting mechanism 4, and the lifting mechanism 4 drives the milling cutter 8 to move to the position to be processed through the connecting table 6.

[0047] like Figure 2 As shown, one end of the connecting platform 6 is sleeved on the surface of the lifting mechanism 4 for driving the connecting platform 6 to rise and fall. The lifting mechanism 4 is fixed to the lead screw sleeve 25. The drive motor 5 is fixed on the top surface of the connecting platform 6. The top end of the face milling cutter 80 is provided with a coupling 7. The face milling cutter 80 is linked to the rotating end of the drive motor 5 through the coupling 7. When the drive motor 5 rotates, it drives the face milling cutter 80 to rotate through the coupling 7.

[0048] Specifically, the lifting mechanism 4 includes a vertical block 41 and a self-locking motor 40 fixed to the top surface of the lead screw sleeve 25. The self-locking motor 40 is fixed to one side of the connecting platform 6, and the rotating end of the self-locking motor 40 extends to the connecting platform 6 and is fixed with a gear. Grooves are provided on both sides of the vertical block 41. Racks are fixed on both sides of the grooves near the self-locking motor 40, and the gear meshes with the rack. A roller rotates inside one end of the connecting platform 6, which is fitted onto the groove on the side away from the self-locking motor 40. In use, the self-locking motor 40 drives the gear to rotate. Under the action of the rack, the rotating gear drives the connecting platform 6 to rise and fall along the height direction of the vertical block 41. When the self-locking motor 40 stops running, it completes the self-locking and stably fixes the connecting platform 6 to the surface of the vertical block 41.

[0049] like Figure 4 As shown, in this embodiment, the coupling 7 is the third bevel gear 71 and the fourth bevel gear 72. The third bevel gear 71 is fixed on the top of the face milling cutter 80, and the fourth bevel gear 72 is fixed to the rotating end of the drive motor 5. The third bevel gear 71 and the fourth bevel gear 72 mesh. When the face milling cutter 80 rotates, the face milling cutter 80 synchronously drives the keyway milling cutter 81 to rotate.

[0050] When using face cutter 80, keyway cutter 81 is located inside face cutter 80 and will not interfere with the operation of face cutter 80; when using keyway cutter 81, the end of keyway cutter 81 extends to the outside of face cutter 80 and face cutter 80 will not interfere with the operation of keyway cutter 81.

[0051] like Figure 5As shown, the press-to-switch mechanism 9 includes a fixed frame 90, a guide sleeve 91, a push rod 92, a linear rotary cam 93, a transmission rod 94, and a spring-loaded mechanism 95. The fixed frame 90 is fixed to the guide sleeve 91 and is fixed to the surface of the connecting platform 6. The push rod 92 is restricted to slide within the guide sleeve 91. The linear rotary cam 93 is located at the bottom of the push rod 92. The transmission rod 94 is rotatably mounted within the linear rotary cam 93 and extends rotatably into the face mill 80. The spring-loaded mechanism 95 is located within the face mill 80. The top end of the keyway cutter 81 passes through the spring-loaded mechanism 95 and is fixed to the bottom end of the transmission rod 94. In use, the face mill 80 drives the keyway cutter 81 to rotate synchronously via the transmission rod 94. The specific driving method is as follows:

[0052] like Figure 6 As shown, the transmission rod 94 has a drive groove 941 along its length on its surface. The inner wall of the face milling cutter 80 is fixed with a drive bar 801 that matches the drive groove 941. In use, the drive groove 941 is aligned with the drive bar 801 and inserted into the face milling cutter 80. When the face milling cutter 80 rotates, it drives the drive groove 941 through the drive bar 801. The drive groove 941 drives the keyway milling cutter 81 to rotate synchronously with the face milling cutter 80 through the transmission rod 94.

[0053] When the connecting platform 6 moves upward, the push rod 92 contacts the equipment body 1, causing the push rod 92 to press down. With the cooperation of the spring mechanism 95, the push rod 92 drives the linear rotary cam 93 to enter the deep recess 911 or shallow recess 912 sequentially opened on the surface of the guide sleeve 91. When the linear rotary cam 93 enters the deep recess 911, the keyway cutter 81 extends to the outside of the face cutter 80. When the linear rotary cam 93 enters the shallow recess 912, the keyway cutter 81 is located inside the face cutter 80.

[0054] To facilitate the linear rotation of the linear rotary cam 93 driven by the push rod 92, the top surface of the linear rotary cam 93 is provided with an inclined surface facing one side. Both the push rod 92 and the bottom surface of the guide sleeve 91 are provided with abutment surfaces adapted to the inclined surface. For example, when the push rod 92 is pressed down, and the push rod 92 drives the linear rotary cam 93 out of the deep recess 911, the inclined surface of the top surface of the linear rotary cam 93, under the action of the rebound force of the rebound mechanism 95 and the guidance of the abutment surface of the bottom surface of the push rod 92, causes the push rod 92 to rotate slightly, so that the inclined surface of the top surface of the linear rotary cam 93 is completely embedded in the adjacent bottom surface of the push rod 92. When the self-locking motor 40 resets between the two abutting surfaces, the push rod 92 disengages from the equipment body 1. Under the continuous rebound force of the spring mechanism 95, the push rod 92 enters the guide sleeve 91. When the inclined surface of the top surface of the linear rotary cam 93 disengages from the abutting surface of the bottom surface of the push rod 92, it contacts the abutting surface of the bottom surface of the guide sleeve 91. Similarly, guided by the abutting surface of the bottom surface of the guide sleeve 91, it enters the shallow recess 912. At this time, the keyway end mill 81 extends to the outside of the face end mill 80. The keyway end mill 81 is used, and there is no need to replace the face end mill 80, saving replacement time and improving the processing efficiency of the workpiece.

[0055] It should be noted that the keyway cutter 81 and the face cutter 80 rotate around the same axis, that is, they rotate concentrically. Therefore, no recalibration is required when using the keyway cutter 81.

[0056] like Figure 5 As shown, the springback mechanism 95 includes a retaining ring 951 and a spring 952. The retaining ring 951 is horizontally fixed inside the face mill 80, and the spring 952 is disposed between the retaining ring 951 and the bottom end of the transmission rod 94. The top end of the keyway mill 81 passes through the retaining ring 951 and the spring 952 in sequence, and the top end of the keyway mill 81 can be fixed to the bottom end of the transmission rod 94 by threads. More preferably, a prism is fixed to the top of the keyway mill 81. The prism passes through the retaining ring 951 and the spring 952 in sequence and extends to the bottom end of the transmission rod 94, where a groove adapted to the prism is formed. Then, a pin is used to pass through the face mill 80, the transmission rod 94, and the prism to complete the detachable fixing of the top end of the keyway mill 81 to the transmission rod 94. When the keyway mill 81 needs to be replaced, the pin is pulled out, and it can be replaced individually.

[0057] To better prevent the rotation of the transmission rod 94 from interfering with the linear rotary cam 93 and to ensure the smooth switching of the pressing switching mechanism 9, the top end of the transmission rod 94 is fixed to the bottom of the linear rotary cam 93 by a bearing.

[0058] In use, the milling cutter 8 is moved to the machining position via the longitudinal axis mechanism 2 and the transverse axis mechanism 3. The forward start block 41 drives the connecting table 6 to move upward, and the push rod 92 contacts and presses down inside the equipment body 1. The self-locking motor 40 starts in reverse, driving the milling cutter 8 to reset and complete self-locking. The keyway milling cutter 81 extends to the outside of the face milling cutter 80. When only the face milling cutter 80 is used, the same operation can be performed. The keyway milling cutter 81 resets to the inside of the face milling cutter 80. The above operations can be completed without stopping the drive motor 5, avoiding frequent starting and stopping of the drive motor 5 when changing milling cutters. This increases the service life of the drive motor 5 and ensures a stable speed when the milling cutter is switched, saving the time of waiting for the speed to stabilize compared to existing technologies, resulting in higher processing efficiency. The keyway milling cutter 81 and the face milling cutter 80 rotate concentrically, and no recalibration is required when switching, further improving processing efficiency.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 precision thread milling apparatus comprising an apparatus body (1), characterised in that, Also include: Longitudinal axis mechanism (2) and transverse axis mechanism (3) for driving the lifting mechanism (4) moves in the XY axis coordinate system, wherein the longitudinal axis mechanism (2) and transverse axis mechanism (3) are perpendicular to each other, the lifting mechanism (4) is located on the longitudinal axis mechanism (2); Lifting mechanism (4) for driving the connecting table (6) to lift; Milling cutter (8) comprising fixed rotation in the connecting table (6) face milling cutter (80) and keyway milling cutter (81), keyway milling cutter (81) is set in the face milling cutter (80) inside; Driving motor (5), when rotating through the shaft (7) drive face milling cutter (80) and keyway milling cutter (81) synchronous concentric rotation; Press switch mechanism (9), with the connecting table (6) fixed, and is arranged above the face milling cutter (80), the lifting mechanism (4) is used for driving the connecting table (6) to move up to start press switch mechanism (9), make the keyway milling cutter (81) end extends out of the face milling cutter (80) end or into the face milling cutter (80) end, press switch mechanism (9) start, the lifting mechanism (4) drives the connecting table (6) to reset.

2. The precision thread milling apparatus of claim 1, wherein, Press switch mechanism (9) includes: Fixed frame (90), fixed on the surface of the connecting table (6); Guide sleeve (91), fixed with fixed frame (90); Push rod (92), push rod (92) is connected in the guide sleeve (91); Linear rotation cam (93), arranged at the bottom of the push rod (92); Transmission rod (94), rotationally connected at the bottom of the linear rotation cam (93), the bottom end of the transmission rod (94) rotationally extends into the face milling cutter (80); Springback mechanism (95), arranged in the face milling cutter (80), the top end of the keyway milling cutter (81) penetrates the springback mechanism (95) and is fixed with the bottom end of the transmission rod (94), the face milling cutter (80) drives the keyway milling cutter (81) synchronous rotation through the transmission rod (94).

3. The precision thread milling apparatus of claim 2, wherein: Transmission rod (94) surface is provided with driving groove (941) along its length direction, the inner wall of the face milling cutter (80) is fixed with driving bar (801) matched with the driving groove (941).

4. The precision thread milling apparatus of claim 2, wherein: When the push rod (92) is pressed down, the linear rotation cam (93) is driven into the deep notch (911) or shallow notch (912) sequentially arranged on the surface of the guide sleeve (91) under the cooperation of the push rod (92) and the springback mechanism (95), when the linear rotation cam (93) enters the deep notch (911), the keyway milling cutter (81) extends to the outside of the face milling cutter (80), when the linear rotation cam (93) enters the shallow notch (912), the keyway milling cutter (81) is located in the face milling cutter (80) inside.

5. The precision thread milling apparatus of claim 4, wherein: The top end surface of the linear rotation cam (93) is provided with a slope facing one side, the bottom end surface of the push rod (92) and the guide sleeve (91) is provided with a matching resistance surface, and the matching resistance surface is used for guiding the linear rotation cam (93) into the shallow notch (912) or the deep notch (911).

6. The precision thread milling apparatus of claim 2, wherein: The rebound mechanism (95) comprises a fixed ring (951) and a spring (952), the fixed ring (951) is horizontally fixed in the face milling cutter (80), the spring (952) is arranged between the fixed ring (951) and the bottom end of the transmission rod (94), the top end of the keyway milling cutter (81) penetrates the fixed ring (951) and the spring (952) in sequence, and the keyway milling cutter (81) is detachably fixed at the bottom end of the transmission rod (94).

7. The precision thread milling apparatus of claim 1, wherein: The horizontal shaft mechanism (3) comprises a second motor (30), a ball screw (31) and a screw sleeve (32), the second motor (30) is fixed on one side of the equipment body (1), the ball screw (31) is fixed on the rotating end of the second motor (30), the other end of the ball screw (31) is rotatably connected in the equipment body (1), and the screw sleeve (32) is rotatably connected to the surface of the ball screw (31); the second motor (30) drives the ball screw (31) to rotate, so that the screw sleeve (32) moves on the surface of the ball screw (31).

8. The precision thread milling apparatus of claim 7, wherein: The vertical shaft mechanism (2) comprises a first motor (20), a crescent telescopic rod (21), a transmission assembly (23), a ball screw (24) and a screw sleeve (25), one side of the ball screw (24) is rotatably connected to the screw sleeve (32), the other end of the ball screw (24) is rotatably connected in the equipment body (1), the first motor (20) is fixed on one side of the equipment body (1), the crescent telescopic rod (21) is fixed on the rotating end of the first motor (20), the other end of the crescent telescopic rod (21) is fixedly connected with the transmission assembly (23), the transmission assembly (23) is used for driving the ball screw (24) to rotate, and the screw sleeve (25) is rotatably arranged on the surface of the ball screw (24); when the screw sleeve (32) moves, the crescent telescopic rod (21) is driven to synchronously expand and contract through the transmission assembly (23).

9. The precision thread milling apparatus of claim 8, wherein: The transmission assembly (23) comprises a connecting frame (233), the connecting frame (233) is fixed on one side of the screw sleeve (32), a fixed column (232) is fixed on one side of the top of the connecting frame (233), a second bevel gear (231) is rotatably connected to the end of the fixed column (232), a first bevel gear (230) is fixed on the telescopic end of the crescent telescopic rod (21), the first bevel gear (230) is meshed with the second bevel gear (231), and the second bevel gear (231) is in transmission with the ball screw (24) through a transmission belt (234).

10. The precision thread milling apparatus of claim 9, wherein: One end of the connecting table (6) is sleeved on the surface of the lifting mechanism (4), and the lifting mechanism (4) is fixed with the screw sleeve (25); the driving motor (5) is fixed on the top surface of the connecting table (6), the face milling cutter (80) is provided with a shaft coupling (7) at the top end, and the face milling cutter (80) is connected with the rotating end of the driving motor (5) through the shaft coupling (7).

Images