A milling machine for machining parts

Abstract

The application discloses a milling machine for part machining, which comprises a machine table and a milling cutter. The machine table is provided with a base plate and a positioning seat. The base plate is slidably arranged on the machine table, and the positioning seat is slidably arranged on the base plate. The positioning seat comprises a base and a rotating seat. The rotating seat is rotatably arranged on the base through a rotating shaft. A plurality of groups of positioning grooves are uniformly arranged on the rotating seat. A pressing plate is slidably arranged on the front and rear sides of the positioning groove. The base is provided with a driving part for driving the pressing plate to press the blank. The base plate and the base drive the blank to complete the feeding in the front and rear directions and the left and right directions, and the surface milling is realized through the milling cutter. A driving rotating assembly is arranged on the left side of the base plate. The rotating shaft of the rotating seat extends to the outside of the base. The driving rotating assembly comprises a base block and a short shaft. The rotating shaft is provided with a local helical groove with front and rear straight grooves. A fixing part and an unlocking part are arranged between the rotating shaft and the base. The rotating shaft is connected with a first one-way bearing. A second one-way bearing is arranged in the shaft hole of the base block. The short shaft is arranged in the inner ring of the second one-way bearing. The application can realize the automatic fixing and double-sided switching machining of a plurality of groups of part blanks, and greatly improves the machining efficiency.

Description

Technical Field

[0001] This invention relates to the field of milling equipment technology, specifically to a milling machine tool for machining parts. Background Technology

[0002] Milling machine tools mainly refer to machine tools that use milling cutters to machine various surfaces of workpieces. Typically, the rotation of the milling cutter is the primary motion, while the movement of the workpiece and the worktable constitutes the feed motion. They can machine planes, grooves, various curved surfaces, gears, etc., and are widely used in mechanical manufacturing and repair departments.

[0003] The existing blanks for machining parts have surface defects and do not meet the accuracy standards. Before machining, the upper and lower end faces need to be pre-treated by surface milling. However, during milling, the fixture needs to be disassembled and assembled once for machining one side end face of a blank, resulting in low machining efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a milling machine tool for machining parts, so as to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a milling machine tool for machining parts, comprising a machine base and a milling cutter. The machine base is provided with a part blank conveying assembly, which includes a base plate and a positioning seat. The base plate is slidably disposed on the machine base, and the positioning seat is slidably disposed on the base plate. The positioning seat includes a base and a rotating seat. The rotating seat has rotating shafts at both ends along its length. The rotating seat is rotatably disposed in the base via the rotating shafts. The rotating seat has multiple sets of positioning grooves evenly disposed along its length for placing part blanks. The rotating seat has pressure plates slidably disposed on both the front and rear sides of the positioning grooves for pressing the part blanks. The base is provided with a driving component for driving the pressure plates to press the part blanks. The movement of the base plate and the base drives the part blank to complete the front and rear movement and the left and right feed movement, and after passing through the milling cutter, the surface milling is completed.

[0006] The left end of the substrate is provided with a drive assembly. The rotating shaft on the side of the rotating base near the drive assembly extends to the outside of the base. The drive assembly includes a base block and a short shaft. One side of the base block is provided with a shaft hole for inserting the end of the rotating shaft located outside the base. The outer wall of the rotating shaft is provided with a partial spiral groove that mates with the short shaft. One end of the spiral groove is provided with a front straight groove for the short shaft to enter the partial spiral groove, and the other end is provided with a rear straight groove. A fixing member is provided between the rotating shaft and the base. The base block is provided with an unlocking mechanism for unlocking the positioning member. A first one-way bearing is connected between the rotating shaft and the base. A second one-way bearing is provided in the shaft hole. The short shaft is located in the inner ring of the second one-way bearing.

[0007] Preferably, the base has a locking hole on the outer wall of the rotating shaft on one side of the base block. The fixing component includes a fixing rod and a first spring. The base has a rotating hole for the rotating shaft to rotate. The fixing components are symmetrically arranged on both sides of the rotating hole. The base has a rod groove for the fixing rod to slide at the rotating hole. The first spring is fixed to the bottom end of the rod groove and abuts against the fixing rod. The first spring drives the fixing rod to engage in the locking hole after aligning with it.

[0008] The unlocking component includes an unlocking rod fixed to the base block. The unlocking rods are symmetrically arranged on both sides of the shaft hole opening. The inner walls on both sides of the rotating hole are provided with slots for the unlocking rods to be inserted. The fixing rod is located in the slot and has an inclined surface for the unlocking rods to abut against it.

[0009] Preferably, the rotating seat is provided with through slots on both sides of the positioning slot, the pressure plate is slidably disposed in the through slot, the pressure plate is provided with limiting plates on both sides, the inner wall of the through slot is provided with a limiting groove for the limiting plate to slide, and a second spring is fixed on the inner wall of the limiting groove near the positioning slot for abutting against the limiting plate.

[0010] The driving component has multiple sets of corresponding positioning slots. The driving component includes a driving rod and a driving gear. The driving rod is threaded to the base, and the driving gear is coaxially fixed to the end of the driving rod away from the base. A clamping rack and a releasing rack are fixed on the base plate. The clamping rack and the releasing rack are located on both sides of the milling cutter and are respectively set at the height positions of the upper and lower sides of the driving gear.

[0011] Preferably, the rotary seat is symmetrically provided with pre-tightening rollers on the left and right sides of each group of positioning grooves, and the pre-tightening rollers are rotatably disposed in the rotary seat and partially located in the positioning grooves.

[0012] Preferably, the substrate is provided with a raised plate, and the base block is fixed to the side end face of the raised plate near the base.

[0013] Preferably, the base has a rotating area in the middle for the rotating seat to rotate, and the side wall of the rotating area is an arc-shaped wall.

[0014] Preferably, the base is provided with a blank height positioning block at the bottom of the rotating area. The blank height positioning block is slidably disposed at the bottom of the base. The base plate is provided with a first height positioning member and a second height positioning member to drive the blank height positioning block to slide to the required height. The first height positioning member drives the blank height positioning block to move to a required height, so that the part blank is located at this height for top end face processing. The second height positioning member drives the blank height positioning block to move to another required height, so that the part blank is located at this height for top end face processing.

[0015] Preferably, the first height positioning component includes a first height block and a first horizontal plate fixed on the first height block, and the second height positioning component includes a second height block and a second horizontal plate fixed on the second height block. The first height block and the second height block are respectively located on both sides of the positioning base. The bottom of the base is provided with a block groove for the slab height positioning block to slide up and down. The two sides of the base are respectively provided with a first side groove for the first horizontal plate to be inserted and a second side groove for the second horizontal plate to be inserted. The first side groove and the second side groove are both connected to the block groove. The two sides of the slab height positioning block are respectively provided with a first horizontal plate groove for the first horizontal plate to be inserted and a second horizontal plate groove for the second horizontal plate to be inserted. The right side of the opening of the first horizontal plate groove is provided with a first abutting inclined surface that abuts against the first horizontal plate, and the left side of the opening of the second horizontal plate groove is provided with a second abutting inclined surface for the second horizontal plate to abut against. The bottom of the block groove is provided with a third spring for pulling the slab height positioning block. The base plate is provided with a control component that controls only the first height positioning component or the second height positioning component to cooperate with the slab height positioning block each time.

[0016] Preferably, a U-shaped plate is connected between the bottom ends of the first height block and the second height block. The base plate is provided with a groove for the U-shaped plate to slide. The control component includes a first gear, a first rack, a first screw, a second gear, a second rack, and a second screw. Fixed blocks are symmetrically fixed on both sides of the base. The first screw is rotatably mounted on the fixed block and one end is threadedly connected to the first height block. The first gear is coaxially fixed to the tail end of the first screw. A first extension plate is provided on one side of the base. The first rack is fixed to the bottom end of the first extension plate for meshing with the first gear. The second screw is rotatably mounted on the fixed block and both ends are threadedly connected to the second height block. The second gear is coaxially fixed to the tail end of the second screw. A second extension plate is provided on the other side of the base. The second rack is fixed to the bottom end of the second extension plate for meshing with the second gear. The first extension plate and the second extension plate are staggered.

[0017] Preferably, the top of the machine tool is provided with a first slide rail, the bottom of the base plate is provided with a first slider that slides with the first slide rail, a motor is fixed on the machine tool, a first drive rod is fixed at the output end of the motor, a first bottom block is provided at the bottom of the base plate, the first drive rod passes through the first bottom block, a first guide shaft is provided inside the first bottom block, and a first reciprocating spiral groove is provided on the first drive rod for sliding with the first guide shaft.

[0018] The base plate is provided with a second slide rail at the top and a second slider that slides with the second slide rail at the bottom. A second drive rod is rotatably provided on the raised plate. A second base block is provided at the bottom of the base plate. The second drive rod passes through the second base block. A second guide shaft is provided inside the second base block. A second reciprocating spiral groove is provided on the second drive rod for sliding engagement with the second guide shaft. One end of the second drive rod passes through the raised plate and is coaxially fixed with a transmission gear. An extension frame is provided on one side of the machine. A transmission rack that meshes with the transmission gear is provided on the extension frame. The transmission gear is rotatably mounted on the second drive rod through a fourth one-way bearing.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] By moving the positioning seat back and forth along the base plate and moving the positioning seat left and right on the base plate, the feed path required for machining the top end face of the part blank on the rotary table can be realized.

[0021] The positioning seat consists of a base and a rotating base. The rotating base is equipped with multiple positioning slots for placing part blanks, and the base is equipped with pressure plates for fixing part blanks. This allows for the technical effect of fixing multiple sets of parts before processing and releasing them after processing. It also enables the function of flipping all the part blanks after processing the upper end faces. This achieves automatic fixing of multiple sets of part blanks before milling, eliminating the need for repeated fixture disassembly and assembly operations on individual blanks, reducing processing auxiliary time, and improving the continuity and convenience of batch processing.

[0022] By setting a first height positioning component and a second positioning component, which are connected as a whole by a U-shaped plate, and by setting a control component that controls only the first height positioning component or the second height positioning component to cooperate with the plate height positioning block each time, the overall thickness of the plate is the required thickness when the other end face of the plate is finished after one side of the plate is processed and flipped. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0026] Figure 3 This is a schematic diagram illustrating the structure of the part blank conveying assembly of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure highlighting the bottom of the substrate in this invention;

[0028] Figure 5 This is an exploded view of the base, rotating seat, and pressure plate of the present invention;

[0029] Figure 6 This is a cross-sectional view of the location of the base fixing component in this invention;

[0030] Figure 7 yes Figure 6 An enlarged schematic diagram of part A in the middle;

[0031] Figure 8 This is a cross-sectional schematic diagram highlighting the drive assembly and the second one-way bearing of the present invention;

[0032] Figure 9 This is an exploded view of the base and slab height adjustment block of the present invention;

[0033] Figure 10 yes Figure 9 Enlarged schematic diagram of part B in the middle;

[0034] Figure 11 This is an exploded view of the substrate, the first height positioning member, and the second height positioning member of the present invention.

[0035] Figure 12 This is an exploded view of the second drive rod of the present invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Machine base; 2. Milling cutter; 3. Part blank conveying assembly; 301. Base plate; 302. Positioning seat; 3021. Base; 3022. Rotary seat; 4. Rotating shaft; 5. Positioning groove; 6. Pressure plate; 7. Driving component; 701. Driving rod; 702. Driving gear; 8. Pressing rack; 9. Releasing rack; 10. Preload roller; 12. Drive assembly; 121. Base block; 122. Short shaft; 13. Partial spiral groove; 14. Front straight groove; 15. Rear straight groove; 16. First one-way bearing; 17. Second one-way bearing ; 18. Fixing component; 181. Fixing rod; 182. First spring; 19. Snap hole; 20. Rod groove; 21. Rotating hole; 22. Unlocking rod; 23. Slot; 24. Sloping surface; 25. Elevating plate; 27. Rotating area; 28. Curved wall; 29. ​​Slab height positioning block; 30. First height positioning component; 3001. First height block; 3002. First horizontal plate; 31. Second height positioning component; 311. Second height block; 312. Second horizontal plate; 32. Block groove; 33. First side groove; 34. Second side groove; 35. First horizontal plate groove; 36. Second horizontal plate groove; 37. First inclined plane; 38. Second inclined plane; 39. Third spring; 40. Control component; 401. First gear; 402. First rack; 403. First screw; 404. Second gear; 405. Second rack; 406. Second screw; 41. U-shaped plate; 42. Groove body; 43. Fixing block; 44. First extension plate; 45. Second extension plate; 46. Fifth one-way bearing; 47. Sixth one-way bearing; 48. First slide rail; 49. First slide rail 50. Motor; 51. First drive rod; 52. First base block; 53. First reciprocating spiral groove; 54. Second slide rail; 55. Second slider; 56. Second drive rod; 561. Second long rod; 562. Second slide bar; 57. Second base block; 58. Second reciprocating spiral groove; 59. Transmission gear; 60. Extension frame; 61. Transmission rack; 62. Fourth one-way bearing; 63. Through groove; 64. Limiting plate; 65. Limiting groove; 66. Second spring; 67. Square rod; 68. Fixed seat; 69. Shaft hole. Detailed Implementation

[0038] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-12 The present invention provides a technical solution:

[0040] Example 1:

[0041] See Figure 1-8 In the existing technology, when milling machine tools perform double-sided machining on part blanks, it is usually necessary to manually disassemble, flip and re-clamp the workpiece, which has problems such as poor positioning repeatability, low clamping efficiency, long machining cycle and easy introduction of human error; especially in batch processing scenarios, frequent manual intervention significantly restricts the ability of automated continuous production.

[0042] Based on the above issues, please refer to Figure 1 , Figure 2 and Figure 3 This application provides a milling machine tool for machining parts, including a machine base 1 and a milling cutter 2. A part blank conveying assembly 3 is provided on the machine base 1. The part blank conveying assembly 3 includes a base plate 301 and a positioning seat 302. The base plate 301 is slidably mounted on the machine base 1, and the positioning seat 302 is slidably mounted on the base plate 301. The positioning seat 302 includes a base 3021 and a rotating seat 3022. Rotating shafts 4 are provided at both ends of the rotating seat 3022 along its length. The rotating seat 3022 is connected by rotating shafts... Shaft 4 is rotatably mounted in base 3021. Multiple sets of positioning grooves 5 for placing part blanks are evenly provided along the length direction on the rotating base 3022. Pressure plates 6 for pressing the part blanks are slidably provided on both the front and rear sides of the positioning grooves 5 on the rotating base 3022. A driving component 7 for driving the pressure plates 6 to press the part blanks is provided on the base 3021. The movement of the base plate 301 and the base 3021 drives the part blank to complete the forward and backward movement and the left and right feed movement. After passing through the milling cutter 2, the surface milling is completed.

[0043] A drive assembly 12 is provided at the left end of the substrate 301. The rotating shaft 4 of the rotating base 3022 extends to the outside of the base 3021 near the drive assembly 12. The drive assembly 12 includes a base block 121 and a short shaft 122. A shaft hole 69 is provided on one side of the base block 121 for inserting one end of the rotating shaft 4 outside the base 3021. A partial spiral groove 13 that mates with the short shaft 122 is provided on the outer wall of the rotating shaft 4. A front straight groove 14 for the short shaft 122 to enter the partial spiral groove 13 is provided at one end of the spiral groove, and a rear straight groove 15 is provided at the other end. A fixing member 18 is provided between the rotating shaft 4 and the base 3021. An unlocking member for unlocking the fixing member 18 is provided on the base block 121. A first one-way bearing 16 is connected between the rotating shaft 4 and the base 3021. A second one-way bearing 17 is provided in the shaft hole 69. The short shaft 122 is located in the inner ring of the second one-way bearing 17.

[0044] The milling machine tool includes a machine base 1, a milling cutter 2, and a part blank conveying assembly 3. The machine base 1 is a rigid support platform with a first slide rail 48 on the top. The bottom of the base plate 301 is provided with a first slider 49 that slides in cooperation with the first slide rail 48, so as to realize the reciprocating linear sliding of the base plate 301 in the front-back direction (i.e., the X direction). The milling cutter 2 is fixed above the machine base 1 or on the gantry, and its cutting edge is facing the movement path of the positioning seat 302, which is used to perform surface milling on the part blank passing below it.

[0045] The substrate 301 has a first base block 52 at its bottom, and a first guide shaft is provided inside the first base block 52. The output end of the motor 50 on the machine base 1 is connected to the first drive rod 51. The first drive rod 51 passes through the first base block 52 and has a first reciprocating spiral groove 53 on its outer periphery. The first guide shaft slides into the spiral groove, thereby converting the rotational motion of the first drive rod 51 into the reciprocating linear motion of the substrate 301. The substrate 301 has a second slide rail 54 at its top, and the base 3021 of the positioning seat 302 has a second slider 55 that slides with the second slide rail 54 at its bottom, so as to realize the independent feeding motion of the positioning seat 302 in the left and right direction (i.e., the Y direction).

[0046] The positioning seat 302 includes a base 3021 and a rotating seat 3022. The base 3021 is a box-shaped cast steel structure with a rotating area 27 inside to accommodate the rotating seat 3022. It has rotating holes 21 at both ends of its length for the rotating shaft 4 to pass through. The rotating seat 3022 has rotating shafts 4 at both ends of its length. The rotating shafts 4 are connected to the base 3021 by a first one-way bearing 16. The locking direction of the first one-way bearing 16 is set to allow the rotating seat 3022 to rotate unidirectionally in the clockwise direction relative to the base 3021 only, preventing rotation back.

[0047] The rotating base 3022 is provided with multiple sets of positioning slots 5 evenly distributed along its length for placing part blanks; the positioning slots 5 penetrate the rotating base 3022; the number of positioning slots 5 can be set according to the specific part blank size, and this application takes 4 sets as an example; each set of positioning slots 5 is used to accommodate a rectangular part blank.

[0048] The rotary base 3022 is slidably provided with pressure plates 6 on both the front and rear sides of the positioning groove 5 for pressing the part blank; the pressure plates 6 are slidably disposed in the corresponding through grooves 63 opened on the rotary base 3022, the through grooves 63 penetrate the rotary base 3022 and communicate with the positioning groove 5; the pressure plates 64 are symmetrically provided on both sides of the pressure plates 6, the pressure plates 64 are slidably embedded in the limiting grooves 65 provided in the inner wall of the through grooves 63, and a second spring 66 is fixed on the inner wall of the limiting groove 65 near the positioning groove 5. One end of the second spring 66 abuts against the limiting plate 64 and the other end abuts against the end wall of the limiting groove 65, thereby providing an initial preload force for the pressure plates 6, so that they remain in a loose state when there is no external drive.

[0049] The base 3021 is provided with a driving component 7 for driving the pressure plate 6 to press the workpiece blank; the driving component 7 is provided in multiple sets corresponding to the number of positioning slots 5, and each set of driving components 7 includes a driving rod 701 and a driving gear 702; the driving rod 701 is threadedly connected to the base 3021, and its axis is perpendicular to the length direction of the rotating seat 3022; the driving gear 702 is coaxially fixed to the end of the driving rod 701 away from the base 3021; ​​a clamping rack 8 and a releasing rack 9 are fixed on the base plate 301, which are located on the front and rear sides of the milling cutter 2 respectively, and are staggered in the height direction: the clamping rack 8 is located on the front and rear sides of the milling cutter 2, and are staggered in the height direction. Above the drive gear 702, the release rack 9 is located below the drive gear 702; when the base plate 301 drives the positioning seat 302 forward to the front of the milling cutter 2, the drive gear 702 meshes with the clamping rack 8, the drive rod 701 rotates in the forward direction, pushing the pressure plate 6 towards the center of the positioning groove 5 to achieve clamping; when the positioning seat 302 continues to move towards the seat after a part blank has been processed, the drive gear 702 meshes with the release rack 9, the drive rod 701 rotates in the reverse direction, releasing the pressure of the pressure plate 6; this structure realizes the mechanical linkage between the action of the pressure plate 6 and the transmission motion, without the need for additional control signals.

[0050] A drive assembly 12 is provided at the left end of the substrate 301. The drive assembly 12 includes a base block 121 and a short shaft 122. The base block 121 is fixed to the left end face of the substrate 301. A shaft hole 69 is provided on one side of the base block 121. A second one-way bearing 17 is provided in the shaft hole 69. The inner ring of the second one-way bearing 17 is welded and fixedly fitted to the short shaft 122, and the outer ring is fixed in the shaft hole 69. The locking direction of the second one-way bearing 17 is set so that the short shaft 122 is only allowed to rotate unidirectionally relative to the shaft hole 69 in a certain rotation direction. This ensures that when the short shaft 122 moves in the local spiral groove 13, it can only drive the rotating shaft 4 to rotate unidirectionally. When the rotating shaft 4 moves to the side that is disengaged from the shaft hole 69, the short shaft 122 can rotate in the same direction as the rotating shaft 4 through the second one-way bearing 17, ensuring that the short shaft 122 can continue to enter the local spiral groove 13 next time.

[0051] The local spiral groove 13 on the outer wall of the rotating shaft 4, after cooperating with the short shaft 122 to complete one stroke, can drive the rotating shaft 4 to rotate 180°, thereby realizing the switching of the upper and lower end faces of the part blank.

[0052] A fixing member 18 is provided between the rotating shaft 4 and the base 3021. The fixing member 18 is used to lock the rotating shaft 4 in non-reversible conditions to prevent it from rotating accidentally. The fixing member 18 adopts an elastic locking pin structure. Under normal conditions, the fixing member 18 is locked into the locking hole 19 provided on the outer wall of the rotating shaft 4 under the action of the spring to achieve circumferential positioning. When the short shaft 122 is pushed along the spiral groove, the fixing member 18 is disengaged from the locking hole 19 by mechanical action to overcome the spring force, thereby releasing the rotating shaft 4.

[0053] The base block 121 is provided with an unlocking component for unlocking the fixing component 18; the unlocking component includes unlocking rods 22 symmetrically arranged on both sides of the opening of the shaft hole 69; the unlocking rods 22 are fixed on the base block 121 and extend toward the axis of the rotating shaft 4; when the base block 121 moves to the left with the base plate 301 to the extreme position, the unlocking rods 22 are inserted into the slots 23 provided in the inner wall of the rotating hole 21 of the base 3021, and the fixing rod 181 is pushed by the inclined surface 24 to compress the spring, thereby realizing active unlocking; this unlocking action occurs in coordination with the spiral groove driving action to ensure that the timing of the flipping action is controllable.

[0054] A first one-way bearing 16 is connected between the rotating shaft 4 and the base 3021, and a second one-way bearing 17 is provided in the shaft hole 69. The first one-way bearing 16 is located between the rotating shaft 4 and the rotating hole 21 of the base 3021, and its locking direction is the same as that of the second one-way bearing 17. Together, they form a "double one-way" transmission chain: the linear motion of the short shaft 122 is converted into one-way torque through the second one-way bearing 17, and then transmitted to the rotating seat 3022 through the first one-way bearing 16, driving it to rotate in one direction. This structure avoids the use of servo motor 50 or pneumatic components, and can achieve precise and reliable 180° automatic rotation by relying solely on mechanical motion coupling, which meets the requirements of low cost and high robustness in industrial applications.

[0055] Through the above technical solution, this application achieves the following: when the substrate 301 drives the positioning seat 302 to a specific position in the front-back direction, the base block 121 moves to the left simultaneously, and the short shaft 122, constrained by the second one-way bearing 17, enters the local spiral groove 13 along the front straight groove 14; as the substrate 301 continues to move forward, the short shaft 122 moves along the spiral groove trajectory, pushing the rotating shaft 4 to overcome the resistance of the fixing member 18 and rotate; the first one-way bearing 16 ensures that the rotation only occurs in the set direction; when the short shaft 122 reaches the rear straight groove 15, the rotating seat 3022 completes a 180° flip, and the original bottom surface of the part blank becomes the top surface; at this time, the fixing member 18 re-engages into the locking hole 19 under the action of the spring, locking the rotating seat 3022; subsequently, the substrate 301 drives the flipped part blank to continue moving forward, entering the working area of ​​the milling cutter 2, and completing the surface milling of the new side. The entire process requires no manual intervention, no additional power input, and no interruption of the processing cycle, effectively solving the problems of low efficiency and inaccurate positioning caused by repeated clamping in double-sided processing.

[0056] Example 2:

[0057] In one alternative embodiment, such as Figure 6-8As shown, this application also provides a base 3021 with a locking hole 19 on the outer wall of the rotating shaft 4 located on one side of the base block 121. The fixing member 18 includes a fixing rod 181 and a first spring 182. The base 3021 has a rotating hole 21 for the rotating shaft 4 to rotate. The fixing member 18 is symmetrically arranged on both sides of the rotating hole 21. The base 3021 has a rod groove 20 at the rotating hole 21 for the fixing rod 181 to slide. The first spring 182 is fixed to the bottom end of the rod groove 20 and abuts against the fixing rod 181. The first spring 182 drives the fixing rod 181 to be inserted into the locking hole 19 after being aligned with it. The unlocking member includes an unlocking rod 22 fixed on the base block 121. The unlocking rod 22 is symmetrically arranged on both sides of the opening of the shaft hole 69. The inner walls on both sides of the rotating hole 21 have slots 23 for the unlocking rod 22 to be inserted. The fixing rod 181 has an inclined surface 24 at the slot 23 for the unlocking rod 22 to abut against it.

[0058] Through the above technical solution, this application achieves the following: when the part blank is in the milling machining station, the first spring 182 drives the fixing rod 181 to stably embed into the locking hole 19 of the rotating shaft 4, locking the rotating shaft 4 relative to the base 3021, preventing the rotating seat 3022 from rotating unexpectedly due to cutting vibration or inertia; when the base plate 301 drives the base block 121 to move to the flipping start position, the unlocking rod 22 enters the slot 23 synchronously with the base block 121, and converts the radial thrust into the axial yielding force of the fixing rod 181 through the inclined surface 24, so that it overcomes the spring force and exits the locking hole 19, thereby releasing the constraint on the rotating shaft 4, creating conditions for the subsequent drive assembly 12 to drive the rotating seat 3022 to flip; this structure, through the symmetrical arrangement of the double fixing rods 181 and the double unlocking rods 22, improves the synchronicity and force balance of the locking and unlocking actions, and enhances the reliability and repeatability of the mechanism operation.

[0059] Example 3:

[0060] In one alternative embodiment, such as Figure 2 , 3 As shown in Figure 5, this application also provides a rotary base 3022 with through slots 63 extending through both sides of the positioning slot 5. The pressure plate 6 is slidably disposed in the through slot 63. Limiting plates 64 are symmetrically disposed on both sides of the pressure plate 6. A limiting groove 65 is provided on the inner wall of the through slot 63 for the limiting plate 64 to slide. A second spring 66 is fixed on the inner wall of the limiting groove 65 near the positioning slot 5 for abutting against the limiting plate 64. Multiple sets of driving components 7 are provided corresponding to the number of positioning slots 5. The driving component 7 includes a driving rod 701 and a driving gear 702. The driving rod 701 is threadedly connected to the base 3021. The driving gear 702 is coaxially fixed to the end of the driving rod 701 away from the base 3021. A clamping rack 8 and a releasing rack 9 are fixed on the base plate 301. The clamping rack 8 and the releasing rack 9 are respectively located on both sides of the milling cutter 2 and respectively disposed at the height positions of the upper and lower sides of the driving gear 702.

[0061] The positioning groove 5 has through grooves 63 on both sides so that after the rotating seat 3022 is flipped, the driving component 7 on one side can drive the pressure plate 6 to press the part blank. The height of the through groove 63 is less than the thickness of the part blank to prevent the part blank from being pressed into the through groove 63.

[0062] The clamping rack 8 and the releasing rack 9 are both straight racks fixed to the top surface of the substrate 301. They are arranged parallel to the front-to-back sliding direction of the substrate 301 and are located on the front and rear sides of the milling cutter 2, respectively. The clamping rack 8 is positioned above the drive gear 702, and the releasing rack 9 is positioned below the drive gear 702. The vertical height difference between the two is greater than the tooth height of the drive gear 702, ensuring that the drive gear 702 moves only one tooth at a time as it moves with the positioning seat 302. The side engages with one of the racks; the tooth profile of the clamping rack 8 and the releasing rack 9 is a standard involute straight tooth, the module is the same as that of the drive gear 702, and its length is sufficient to cover the entire stroke range of the positioning seat 302 during the feeding process; the starting end of the clamping rack 8 is located at a predetermined distance in front of the milling cutter 2, so that the positioning seat 302 completes the clamping action before entering the milling area; the starting end of the releasing rack 9 is located at a predetermined distance behind the milling cutter 2, so that the positioning seat 302 completes the releasing action after leaving the milling area.

[0063] Through the above technical solution, this application achieves the following: when the positioning seat 302 slides back and forth along the machine table 1 with the base plate 301, each set of drive gears 702 sequentially passes through the clamping rack 8 and the releasing rack 9; before approaching the milling cutter 2, the drive gear 702 meshes with the upper clamping rack 8, driving the drive rod 701 to rotate forward, pushing the pressure plate 6 downward along the through groove 63 through threaded transmission, so that the pressure plate 6 clamps the part blank; after passing the milling cutter 2, the drive gear 702 disengages from the clamping rack 8 and enters the meshing area of ​​the lower releasing rack 9, driving the drive rod 701 rotates in the opposite direction, causing the pressure plate 6 to return to its original position. During this process, the limiting plate 64 slides within the limiting groove 65 to provide guiding constraints, and the second spring 66 provides a rebound force after the drive gear 702 disengages from the rack, stabilizing the pressure plate 6 in its initial position. Thus, relying solely on the linear reciprocating motion of the base plate 301 and the spatial layout of the preset rack, the pressing and releasing actions of the pressure plate 6 are achieved in a completely passive, sequential, and repeatable manner, without the need for additional pneumatic components, solenoid valves, or independent motor 50, significantly reducing system complexity and failure rate.

[0064] Example 4:

[0065] In one alternative embodiment, such as Figure 5 As shown, this application also provides a rotary base 3022 with pre-tightening rollers 10 symmetrically arranged on the left and right sides of each group of positioning grooves 5. The pre-tightening rollers 10 are rotatably arranged in the rotary base 3022 and partially located in the positioning grooves 5.

[0066] The pre-tightening roller 10 is rotatably mounted inside the rotary seat 3022 and supported by bearings in the bearing mounting holes opened on the side wall of the rotary seat 3022. The pre-tightening roller 10 can be made of surface rubber material. The pre-tightening roller 10 and the pressure plate 6 are not on the same end face. In the initial state, the part blank can be initially positioned in the middle of the positioning groove 5. The distance between the two pre-tightening rollers 10 is slightly smaller than the width of the part blank. The rubber pre-tightening roller 10 can initially position the part blank through deformation.

[0067] Example 5:

[0068] In one alternative embodiment, such as Figure 2 , 5 As shown, this application also provides a rotating area 27 in the middle of the base 3021 for the rotating seat 3022 to rotate. The side wall of the rotating area 27 is an arc-shaped wall 28. During the rotation of the rotating seat 3022, the part blank is in a state where it is not pressed by the pressure plate 6. The arc-shaped wall 28 can allow the rotating seat 3022 to move appropriately in the positioning groove 5 by abutting against the part blank during the rotation. When the rotating seat 3022 rotates 90°, the part blank will not slip out due to the obstruction of the arc-shaped wall 28.

[0069] Through the above technical solutions, this application achieves the following: because the sidewall of the rotating area 27 adopts an arc-shaped structure, the rotating seat 3022 maintains a continuous and smooth contact and guiding relationship with the base 3021 during rotation, avoiding local stress concentration and instantaneous jamming caused by right-angle or broken-line sidewalls; the geometric fit between the arc-shaped wall 28 and the outer contour of the rotating seat 3022 improves the radial constraint stiffness during rotation and reduces the swaying amplitude caused by vibration or load fluctuation; at the same time, the arc-shaped structure is conducive to the uniform distribution of grease between the contact surfaces, improving the lubrication state of the friction pair, thereby improving the stability, smoothness and long-term operational reliability of the rotating seat 3022.

[0070] Example 6:

[0071] In one alternative embodiment, such as Figure 9 , 10 As shown in Figure 11, this application also provides a base 3021 located at the bottom of the rotation area 27 with a blank height positioning block 29. The blank height positioning block 29 is slidably disposed at the bottom of the base 3021. The base plate 301 is provided with a first height positioning member 30 and a second height positioning member 31 for driving the blank height positioning block 29 to slide to the required height. The first height positioning member 30 drives the blank height positioning block 29 to move to a required height, so that the part blank is located at this height for top end face processing. The second height positioning member 31 drives the blank height positioning block 29 to move to another required height, so that the part blank is located at this height for top end face processing.

[0072] The first height positioning component 30 includes a first height block 3001 and a first horizontal plate 3002 fixed on the first height block 3001.

[0073] The second height positioning component 31 includes a second height block 311 and a second horizontal plate 312 fixed on the second height block 311. The structure of the second height block 311 is the same as or symmetrically arranged with the first height block 3001. The size, shape and installation method of the second horizontal plate 312 are the same as those of the first horizontal plate 3002. The first height block 3001 and the second height block 311 are located on the left and right sides of the positioning seat 302, respectively. Their initial positions on the substrate 301 are staggered to ensure that only one horizontal plate can interact with the slab height positioning block 29 at any given time.

[0074] The bottom of the base 3021 is provided with a block groove 32 for the slab height positioning block 29 to slide up and down. The block groove 32 penetrates the bottom surface of the base 3021. A first side groove 33 and a second side groove 34 are provided on its two side walls respectively. The first side groove 33 and the second side groove 34 are both connected to the block groove 32, and their opening directions are respectively towards the side where the first height block 3001 and the second height block 311 are located.

[0075] The blank height positioning block 29 is provided with a first horizontal plate groove 35 and a second horizontal plate groove 36 on both sides. The height of the first horizontal plate groove 35 is the same as the thickness of the first horizontal plate 3002, and the height of the second groove is the same as the thickness of the second horizontal plate 312. The first horizontal plate groove 35 is provided with a first inclined surface 37 on both sides of the opening, and the second horizontal plate groove 36 is provided with a second inclined surface 38 on both sides of the opening. These are used to push the blank height positioning block 29 upward to the specified height by the inclined surface 24 during the insertion of the horizontal plate, thereby driving the blank of the part to the specified height for fixing in the milling process.

[0076] Through the above technical solution, this application achieves the following: when the first height positioning component 30 is activated, the first horizontal plate 3002 is inserted along the first side groove 33 and abuts against the first inclined surface 37, pushing the blank height positioning block 29 to rise to the first preset height against the elastic force of the third spring 39, so that the bottom surface of the part blank placed in the positioning groove 5 of the rotary seat 3022 is raised to the first Z-direction reference position suitable for top end milling; when the second height positioning component 31 is activated, the second horizontal plate 312 is inserted along the second side groove 34 and abuts against the second inclined surface 38, pushing the blank height positioning block 29 to rise to the second preset height, so that the bottom surface of the part blank is raised to the second Z-direction reference position suitable for top end milling of another specification; the two height positions are rigidly positioned by independent mechanical structures, without the need for sensor feedback or program control, ensuring the reliability of height switching and repeatability of positioning accuracy.

[0077] Example 7:

[0078] In one alternative embodiment, such as Figure 9 , 10 As shown in Figure 11, this application also provides a milling machine tool for machining parts: a first height positioning member 30 includes a first height block 3001 and a first horizontal plate 3002 fixed on the first height block 3001; a second height positioning member 31 includes a second height block 311 and a second horizontal plate 312 fixed on the second height block 311; the first height block 3001 and the second height block 311 are respectively located on both sides of the positioning base 302; the bottom of the base 3021 is provided with a block groove 32 for the blank height positioning block 29 to slide up and down; the two sides of the base 3021 are respectively provided with a first side groove 33 for the first horizontal plate 3002 to be inserted into and a second side groove 34 for the second horizontal plate 312 to be inserted into. Both the first side groove 33 and the second side groove 34 are connected to the block groove 32. The two sides of the slab height positioning block 29 are respectively provided with a first horizontal plate groove 35 for the first horizontal plate 3002 to be inserted and a second horizontal plate groove 36 for the second horizontal plate 312 to be inserted. The right side of the opening of the first horizontal plate groove 35 is provided with a first abutting slope 37 that abuts against the first horizontal plate 3002. The left side of the opening of the second horizontal plate groove 36 is provided with a second abutting slope 38 that abuts against the second horizontal plate 312. The bottom of the block groove 32 is provided with a third spring 39 for pulling the slab height positioning block 29. The base plate 301 is provided with a control component 40 that controls only the first height positioning component 30 or the second height positioning component 31 to cooperate with the slab height positioning block 29 each time.

[0079] Through the above technical solution, this application achieves the following: when the first height block 3001 moves towards the positioning seat 302 under the drive of the control component 40, the first horizontal plate 3002 slides into the first horizontal plate groove 35 along the first inclined surface 37, pushing the blank height positioning block 29 to rise to the first target height against the elastic force of the third spring 39, thus completing the first height positioning of the top end face of the part blank; at this time, the second horizontal plate 312 is locked by the control component 40 at a position away from the second horizontal plate groove 36; when the second height block 311 moves, the second horizontal plate 312 presses into the second horizontal plate groove 36, thus achieving the second height positioning; the first inclined surface 37 and the second inclined surface 38 together form a one-way guide-two-way self-locking structure, the third spring 39 ensures automatic zeroing in the non-working state, and the control component 40 ensures the uniqueness of the action. The three work together to enable the blank height positioning block 29 to switch stably and reliably between two preset heights.

[0080] Example 8:

[0081] In one alternative embodiment, such as Figure 9 , 10As shown in Figure 11, this application also provides a U-shaped plate 41 connected between the bottom ends of the first height block 3001 and the second height block 311. A groove 42 for sliding the U-shaped plate 41 is provided on the base plate 301. The control component 40 includes a first gear 401, a first rack 402, a first screw 403, a second gear 404, a second rack 405, and a second screw 406. Fixing blocks 43 are symmetrically fixed on both sides of the base 301. The first screw 403 is rotatably mounted on the fixing blocks 43 and one end is threadedly connected to the first height block 3001. The first gear 401 is coaxially fixed to the tail end of the first screw 403. A first extension plate 44 is provided on one side of the base 3021. The first rack 402 is fixed to the bottom end of the first extension plate 44 for meshing with the first gear 401. The second screw 406 is rotatably mounted on the fixing blocks 43 and one end is threadedly connected to the first gear 401. The second height block 311 is threaded, and the second gear 404 is coaxially fixed to the tail end of the second screw 406. The other side of the base 3021 is provided with a second extension plate 45, and the second rack 405 is fixed to the bottom end of the second extension plate 45 for meshing with the second gear 404. The first extension plate 44 and the second extension plate 45 are staggered. It should be noted that a fifth one-way bearing 46 is connected between the first gear 401 and the first screw 403, and a sixth one-way bearing 47 is connected between the second gear 404 and the second screw 406. The fifth one-way bearing 46 and the sixth one-way bearing 47 are allowed to rotate in opposite directions, ensuring that the base 3021 can only drive the first screw 403 or the second screw 406 to rotate when it moves in one direction, thus avoiding interference caused by the base 3021 driving the first screw 403 or the second screw 406 to rotate when it moves back and forth.

[0082] The engagement of the first rack 402 with the first gear 401 and the engagement of the second rack 405 with the second gear 404 both occur when the base 3021 is displaced relative to the base plate 301: When the base 3021 moves to the left to a preset position, the first extension plate 44 drives the first rack 402 to move and engage with the first gear 401, driving the first screw 403 to rotate, thereby driving the first height block 3001 to move horizontally, allowing the first horizontal plate 3002 to enter the first horizontal plate groove 35; conversely, when the base 3021 moves back, the second extension plate 45 drives the second rack 405 to move and engage with the second gear 404, driving the second screw 406 to rotate, thereby driving the second height block 311 to move horizontally, allowing only the second horizontal plate 312 to enter the second horizontal plate groove 36. This process requires no sensors, controllers, or electromagnetic actuators, relying entirely on mechanical positional relationships to achieve logical switching.

[0083] Through the above technical solution, this application achieves the following: by using a U-shaped plate 41 to rigidly connect the first height block 3001 and the second height block 311, while ensuring synchronous movement of the two, the staggered arrangement of the first extension plate 44 and the second extension plate 45 enables the two sets of rack-gear-screw transmission mechanisms to form physical isolation in space and mutual exclusion of actions in time; when the base 3021 moves back and forth on the base plate 301, only one set of transmission mechanisms is triggered to work, thereby driving the corresponding height positioning component to move, realizing the precise, stable and conflict-free switching of the blank height positioning block 29 between two predetermined heights, and meeting the differentiated requirements of different processing steps for the clamping height of the part blank.

[0084] Example 9:

[0085] In one alternative embodiment, such as Figure 1 , 3 As shown in Figure 4, this application also provides a milling machine tool for machining parts. The top of the machine base 1 is provided with a first slide rail 48, the bottom of the base plate 301 is provided with a first slider 49 that slides with the first slide rail 48, the machine base 1 is fixed with a motor 50, the output end of the motor 50 is fixed with a first drive rod 51, the bottom of the base plate 301 is provided with a first bottom block 52, the first drive rod 51 passes through the first bottom block 52, the first bottom block 52 is provided with a first guide shaft, and the first drive rod 51 is provided with a first reciprocating spiral groove 53 for sliding with the first guide shaft.

[0086] The top of the substrate 301 is provided with a second slide rail 54, and the bottom of the substrate 301 is provided with a second slider 55 that slides with the second slide rail 54. A second drive rod 56 is rotatably provided on the lifting plate 25. A second base block 57 is provided at the bottom of the substrate 301. The second drive rod 56 passes through the second base block 57. A second guide shaft is provided inside the second base block 57. A second reciprocating spiral groove 58 is provided on the second drive rod 56 for sliding with the second guide shaft. One end of the second drive rod 56 passes through the lifting plate 25 and is coaxially fixed with a transmission gear 59. An extension frame 60 is provided on one side of the machine base 1. A transmission rack 61 that meshes with the transmission gear 59 is provided on the extension frame 60. The transmission gear 59 is rotatably mounted on the second drive rod 56 through a fourth one-way bearing 62.

[0087] The first slide rail 48 is arranged horizontally along the length of the machine tool 1, and its cross-sectional shape can be T-shaped, dovetail-shaped or rectangular guide rail structure. The first slider 49 slides with the first slide rail 48 to support and guide the linear reciprocating motion of the substrate 301 in the front-back direction (i.e. X direction). The fitting accuracy between the first slide rail 48 and the first slider 49 can be set according to the actual processing requirements.

[0088] The second slide rail 54 is disposed on the top of the base plate 301, and its extension direction is parallel to that of the first slide rail 48. It is used to support the linear reciprocating motion of the raised plate 25 in the left-right direction (i.e., the Y direction). The cooperation structure between the second slide rail 54 and the second slider 55 can be the same as or different from that of the first slide rail 48 / first slider 49. For example, the second slide rail 54 can be a ball linear guide, and the second slider 55 can be equipped with circulating balls to improve the guiding accuracy and dynamic response. The length of the second slide rail 54 can be set according to the stroke requirements of the raised plate 25.

[0089] Through the above technical solution, this application achieves the following: the motor 50 drives the first drive rod 51 to rotate continuously, and the first guide shaft, under the action of the first reciprocating spiral groove 53, pushes the first base block 52 (i.e., base plate 301) to make precise back-and-forth reciprocating linear motion along the first slide rail 48; each reciprocating motion will cause the transmission gear 59 to mesh with the transmission rack 61 once, so that the base 3021 completes one feed (under the action of the fourth one-way bearing 62, there will be no reciprocating feed and the base will be in the same position). The entire drive system is driven by a single motor 50, without the need for an additional power source. It has a compact structure, short transmission chain, high energy utilization, and no mechanical interference between the moving parts, thus meeting the stability and repeatability requirements of multi-degree-of-freedom collaborative processing.

[0090] Example 10:

[0091] In one alternative embodiment, such as Figure 1 , 12 As shown, this application also provides a milling machine tool for machining parts. To facilitate the operator in having space to remove and place part blanks, the second drive rod 56 includes a second long rod 561 and a second slide rod 562. A second reciprocating helical groove 58 is provided on the second slide rod 562. A transmission gear 59 is connected to the second long rod 561 through a fourth one-way bearing 62. The end of the second long rod 561 is provided with a square groove. One end of the second slide rod 562 is provided with a square rod 67 for inserting into the square groove. The end of the second long rod 561 away from the second slide rod 562... The second slide rod 562 is rotatably mounted on the base block 121. The end of the second slide rod 562 away from the second long rod 561 is rotatably connected to the fixed seat 68 through the bearing. In the initial state, the fixed seat 68 is fixed to the base plate 301 by bolts. After a batch of part blanks is processed, the second slide rod 562 can be pulled out of the machine table 1 by loosening the bolts. The part blank is then taken away by a special fixture. After that, a new part blank to be processed is placed into the positioning groove 5. Then the fixed seat 68 is moved to the bolt installation position to process the part blank again.

[0092] The above description is merely a preferred embodiment of the present invention and is 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 milling machine tool for machining parts, comprising a machine base (1) and a milling cutter (2), characterized in that: The machine tool (1) is provided with a part blank conveying assembly (3). The part blank conveying assembly (3) includes a base plate (301) and a positioning seat (302). The base plate (301) is slidably disposed on the machine tool (1) back and forth. The positioning seat (302) is slidably disposed on the base plate (301) left and right. The positioning seat (302) includes a base (3021) and a rotating seat (3022). The rotating seat (3022) has rotating shafts (4) at both ends in the length direction. The rotating seat (3022) is rotatably disposed on the base (3021) through the rotating shafts (4). 21) Inside, the rotating base (3022) is evenly provided with multiple sets of positioning grooves (5) for placing part blanks along the length direction. The rotating base (3022) is provided with pressure plates (6) for pressing the part blanks on both the front and rear sides of the positioning grooves (5). The base (3021) is provided with a driving component (7) for driving the pressure plates (6) to press the part blanks. The movement of the base plate (301) and the base (3021) drives the part blanks to complete the front and back movement and left and right feeding movement, and after passing through the milling cutter (2), the surface milling is completed. The left end of the substrate (301) is provided with a drive assembly (12). The rotating shaft (4) of the rotating base (3022) near the drive assembly (12) extends to the outside of the base (3021). The drive assembly (12) includes a base block (121) and a short shaft (122). One side of the base block (121) is provided with a shaft hole (69) for inserting the end of the rotating shaft (4) located outside the base (3021). The outer wall of the rotating shaft (4) is provided with a partial spiral groove (13) that mates with the short shaft (122). One end of the spiral groove is provided with a front straight groove (14) for the short shaft (122) to enter the local spiral groove (13), and the other end is provided with a rear straight groove (15). A fixing member (18) is provided between the rotating shaft (4) and the base (3021). The base block (121) is provided with an unlocking mechanism for unlocking the positioning member. A first one-way bearing (16) is connected between the rotating shaft (4) and the base (3021). A second one-way bearing (17) is provided in the shaft hole (69). The short shaft (122) is located in the inner ring of the second one-way bearing (17).

2. The milling machine tool for machining parts according to claim 1, characterized in that: The base (3021) has a locking hole (19) on the outer wall of the rotating shaft (4) on one side of the base block (121). The fixing member (18) includes a fixing rod (181) and a first spring (182). The base (3021) has a rotating hole (21) for the rotating shaft (4) to rotate. The fixing member (18) is symmetrically arranged on both sides of the rotating hole (21). The base (3021) has a rod groove (20) for the fixing rod (181) to slide at the rotating hole (21). The first spring (182) is fixed at the bottom end of the rod groove (20) and abuts against the fixing rod (181). The first spring (182) drives the fixing rod (181) to be inserted into the locking hole (19) after being aligned with it. The unlocking component includes an unlocking rod (22) fixed on the base block (121). The unlocking rod (22) is symmetrically arranged on both sides of the opening of the shaft hole (69). The inner walls on both sides of the rotating hole (21) are provided with slots (23) for the unlocking rod (22) to be inserted. The fixing rod (181) is located at the slot (23) and has a slope (24) for the unlocking rod (22) to abut against it.

3. A milling machine tool for machining parts according to claim 1, characterized in that: The rotating seat (3022) is provided with through slots (63) on both sides of the positioning slot (5). The pressure plate (6) is slidably disposed in the through slot (63). Limiting plates (64) are symmetrically provided on both sides of the pressure plate (6). The inner wall of the through slot (63) is provided with a limiting groove (65) for the limiting plate (64) to slide. A second spring (66) is fixed on the inner wall of the limiting groove (65) near the positioning slot (5) for abutting against the limiting plate (64). The driving component (7) is provided with multiple sets of corresponding positioning slots (5). The driving component (7) includes a driving rod (701) and a driving gear (702). The driving rod (701) is threadedly connected to the base (3021). The driving gear (702) is coaxially fixed to one end of the driving rod (701) away from the base (3021). A clamping rack (8) and a releasing rack (9) are fixed on the base plate (301). The clamping rack (8) and the releasing rack (9) are located on both sides of the milling cutter (2) and are respectively set at the height positions of the upper and lower sides of the driving gear (702).

4. A milling machine tool for machining parts according to claim 1, characterized in that: The rotating base (3022) is symmetrically provided with pre-tightening rollers (10) on the left and right sides of each group of positioning grooves (5). The pre-tightening rollers (10) are rotatably arranged in the rotating base (3022) and partially located in the positioning grooves (5).

5. A milling machine tool for machining parts according to claim 4, characterized in that: The substrate (301) is provided with a raised plate (25), and the base block (121) is fixed to the side end face of the raised plate (25) near the base (3021).

6. A milling machine tool for machining parts according to claim 5, characterized in that: The base (3021) has a rotating area (27) in the middle for the rotating seat (3022) to rotate, and the side wall of the rotating area (27) is an arc-shaped wall (28).

7. A milling machine tool for machining parts according to claim 6, characterized in that: The base (3021) is provided with a blank height positioning block (29) at the bottom of the rotating area (27). The blank height positioning block (29) is slidably disposed at the bottom of the base (3021). The base plate (301) is provided with a first height positioning member (30) and a second height positioning member (31) to drive the blank height positioning block (29) to slide to the required height. The first height positioning member (30) drives the blank height positioning block (29) to move to a required height, so that the part blank is located at this height for top end face processing. The second height positioning member (31) drives the blank height positioning block (29) to move to another required height, so that the part blank is located at this height for top end face processing.

8. A milling machine tool for machining parts according to claim 7, characterized in that: The first height positioning component (30) includes a first height block (3001) and a first horizontal plate (3002) fixed on the first height block (3001). The second height positioning component (31) includes a second height block (311) and a second horizontal plate (312) fixed on the second height block (311). The first height block (3001) and the second height block (311) are respectively located on both sides of the positioning base (302). The bottom of the base (3021) is provided with a block groove (32) for the slab height positioning block (29) to slide up and down. The two sides of the base (3021) are respectively provided with a first side groove (33) for the first horizontal plate (3002) to be inserted and a second side groove (34) for the second horizontal plate (312) to be inserted. The first side groove (33) and the second side groove (34) All are connected to the block groove (32). The two sides of the slab height positioning block (29) are respectively provided with a first horizontal plate groove (35) for the first horizontal plate (3002) to be inserted and a second horizontal plate groove (36) for the second horizontal plate (312) to be inserted. The right side of the opening of the first horizontal plate groove (35) is provided with a first abutting slope (37) that abuts against the first horizontal plate (3002). The left side of the opening of the second horizontal plate groove (36) is provided with a second abutting slope (38) that abuts against the second horizontal plate (312). The bottom of the block groove (32) is provided with a third spring (39) for pulling the slab height positioning block (29). The base plate (301) is provided with a control component (40) that controls only the first height positioning component (30) or the second height positioning component (31) to cooperate with the slab height positioning block (29) each time.

9. A milling machine tool for machining parts according to claim 8, characterized in that: A U-shaped plate (41) is connected between the bottom ends of the first height block (3001) and the second height block (311). The base plate (301) is provided with a groove (42) for the U-shaped plate (41) to slide. The control component (40) includes a first gear (401), a first rack (402), a first screw (403), a second gear (404), a second rack (405), and a second screw (406). Fixing blocks (43) are symmetrically fixed on both sides of the base (3021) on the base plate (301). The first screw (403) is rotatably mounted on the fixing block (43) and one end is threadedly connected to the first height block (3001). The first gear (401) is coaxially fixed. At the tail end of the first screw (403), a first extension plate (44) is provided on one side of the base (3021). A first rack (402) is fixed to the bottom end of the first extension plate (44) for meshing with the first gear (401). The second screw (406) is rotatably mounted on the fixed block (43) and its two ends are threadedly connected to the second height block (311). The second gear (404) is coaxially fixed to the tail end of the second screw (406). A second extension plate (45) is provided on the other side of the base (3021). A second rack (405) is fixed to the bottom end of the second extension plate (45) for meshing with the second gear (404). The first extension plate (44) and the second extension plate (45) are staggered.

10. A milling machine tool for machining parts according to claim 5, characterized in that: The machine base (1) is provided with a first slide rail (48) at the top, and a first slider (49) that slides with the first slide rail (48) is provided at the bottom of the base plate (301). A motor (50) is fixed on the machine base (1), and a first drive rod (51) is fixed at the output end of the motor (50). A first bottom block (52) is provided at the bottom of the base plate (301), and the first drive rod (51) passes through the first bottom block (52). A first guide shaft is provided inside the first bottom block (52), and a first reciprocating spiral groove (53) is provided on the first drive rod (51) for sliding with the first guide shaft. The base plate (301) is provided with a second slide rail (54) at the top and a second slider (55) that slides with the second slide rail (54) at the bottom. A second drive rod (56) is rotatably provided on the lifting plate (25). A second base block (57) is provided at the bottom of the base plate (301). The second drive rod (56) passes through the second base block (57). A second guide shaft is provided inside the second base block (57). A second reciprocating spiral groove (58) is provided on the second drive rod (56) for sliding with the second guide shaft. One end of the second drive rod (56) passes through the lifting plate (25) and is coaxially fixed with a transmission gear (59). An extension frame (60) is provided on one side of the machine base (1). A transmission rack (61) that meshes with the transmission gear (59) is provided on the extension frame (60). The transmission gear (59) is rotatably mounted on the second drive rod (56) through a fourth one-way bearing (62).

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