Needle groove milling machine

Abstract

The invention relates to a needle groove milling machine which comprises a milling machine body, a driving shaft, a plurality of blades, a plurality of sliding blocks and an adjusting assembly, the driving shaft is rotationally connected to the milling machine body, the blades are slidably connected to the driving shaft in the length direction of the driving shaft, and the blades are rotationally connected to the sliding blocks; the adjusting assembly is used for changing the distance between the sliding blocks. The device has the effect of producing needle grooves and needle plates at different intervals by adjusting the distance between the blades.

Description

Technical Field

[0001] This application relates to the field of milling machines, and more particularly to a needle groove milling machine. Background Art

[0002] The needle grooves on the needle plate of a flat knitting machine are machined by a milling cutter through an ordinary milling machine.

[0003] Currently, Chinese Utility Model Publication No. CN2472869Y discloses a milling power head for a numerical control needle groove milling machine, which includes a power head box, a tool holder, a blade, a shaft seat, a main shaft, an intermediate shaft, an input shaft, a belt pulley, a motor, etc. Its feature is that the gears on the main shaft and the input shaft are connected to their respective shafts through a pair of end keys, and the gears are not directly connected to the shafts. At the same time, the three shafts for power transmission are installed in the power head box through bearings. This utility model has advantages such as large power transmission power and compact structure.

[0004] There are various styles of current flat knitting machines, and there are needle plates with needle grooves of various different pitches. Now there is an urgent need for a needle groove milling machine that can adjust the distance between the blades. Summary of the Invention

[0005] In order to produce needle plates with needle grooves of different pitches by adjusting the distance between the blades, this application provides a needle groove milling machine.

[0006] A needle groove milling machine provided by this application adopts the following technical solution: A needle groove milling machine includes a milling machine body, a drive shaft, a plurality of blades, a plurality of sliding blocks, and an adjustment assembly. The drive shaft is rotatably connected to the milling machine body. A plurality of the blades are slidably connected to the drive shaft along the length direction of the drive shaft. The blades are rotatably connected to the sliding blocks. The adjustment assembly is used to change the distance between the plurality of sliding blocks.

[0007] By adopting the above technical solution, the drive shaft is used to drive the blades to rotate self - sufficiently, so as to mill the needle plate. When it is necessary to change the distance between the blades, the operator changes the distance between the sliding blocks through the adjustment assembly. Since the blades are rotatably connected to the sliding blocks, when the distance between the sliding blocks changes, it will not affect the rotation of the blades on the drive shaft, realizing the adjustment of the distance between the blades, so as to adapt to needle plates with needle grooves of different pitches.

[0008] Optionally, the adjusting assembly includes a plurality of connecting rods, a plurality of adjusting blocks, two sliding rods, and a control member. The two sliding rods are respectively located on both sides of the blade. The length directions of the two sliding rods are parallel to the length direction of the driving shaft. The two sliding rods are respectively located on both sides of the driving shaft. The control member is used to change the distance between the two sliding rods. The plurality of adjusting blocks are respectively slidably connected to the sliding rods. One end of the connecting rod is rotatably connected to the adjusting block, and the other end of the connecting rod is rotatably connected to the adjacent sliding block. One of the sliding blocks is arranged on the milling machine body.

[0009] By adopting the above technical solution, when it is necessary to adjust the distance between the blades simultaneously, the staff can change the distance between the two sliding rods through the control member. Since the sliding rods are located on both sides of the blade, when the sliding rods move, they will drive the adjusting blocks to move. The adjusting blocks drive the connecting rods to rotate, and the rotation of the connecting rods drives the movement of the sliding blocks. The movement of the sliding blocks will drive the blades to move along the axis direction of the driving shaft and make the distance between the blades the same. One of the sliding blocks is arranged on the milling machine body, realizing the controllable position of the plurality of sliding blocks, making it more convenient for the staff to perform the adjustment operation. And through the two sliding rods and the driving shaft, the sliding of the sliding blocks is more stable, improving the reliability of the equipment.

[0010] Optionally, the control member includes a bidirectional screw rod and a turntable. The length direction of the bidirectional screw rod is parallel to the sliding direction of the two sliding rods. The bidirectional screw rod is rotatably connected to the milling machine body. The two sliding rods are respectively threadedly connected to the screw thread sections with opposite helix directions of the bidirectional screw rod. The turntable is used to drive the bidirectional screw rod to rotate.

[0011] By adopting the above technical solution, when the staff needs to adjust the distance between the blades, the staff can rotate the turntable. The turntable drives the bidirectional screw rod to rotate. The bidirectional screw rod drives the two sliding rods to approach or move away from each other. The bidirectional screw rod has a self-locking effect, reducing the change of the distance between the two sliding rods during the movement of the milling machine body and improving the stability of the equipment.

[0012] Optionally, the control member further includes a first gear and a second gear. The first gear is coaxially arranged with the bidirectional screw rod. The second gear is rotatably connected to the milling machine body. The first gear meshes with the second gear. The turntable is arranged on the second gear. The number of teeth of the first gear is greater than the number of teeth of the second gear.

[0013] By adopting the above technical solution, the rotation of the turntable drives the rotation of the second gear, the second gear drives the rotation of the first gear, and the first gear can drive the rotation of the bidirectional screw. Since the number of teeth of the first gear is greater than that of the second gear, the angular velocity of the first gear is less than that of the second gear during the rotation process, improving the accuracy of the staff to control the distance between the two sliding rods driven by the bidirectional screw.

[0014] Optionally, a positioning member is provided on the second gear. The positioning member includes a positioning spring and a positioning bead. A sliding groove is formed on one side of the second gear facing the milling machine body. The positioning bead is slidably connected in the sliding groove. A plurality of positioning grooves are formed on the milling machine body and are distributed along the axis of the second gear. The positioning spring is used to keep the positioning bead in the positioning groove.

[0015] By adopting the above technical solution, the turntable drives the rotation of the second gear, the second gear drives the rotation of the first gear, and the first gear drives the change of the distance between the two sliding rods through the bidirectional screw. The positioning bead on the second gear will be clamped in the positioning groove under the action of the positioning spring. When the second gear rotates, the relative position of the positioning bead and the positioning groove changes, and the positioning bead will enter the adjacent positioning groove. The staff can hear a click sound, which is convenient for the staff to know whether the distance between the two sliding rods is adjusted in place.

[0016] Optionally, a connecting groove is formed on the side of the second gear facing away from the milling machine body. One end of the turntable is located in the connecting groove. A spline groove is formed at the bottom of the connecting groove. A spline is provided at one end of the turntable located in the connecting groove. A separating spring is further provided on the second gear to keep the turntable away from the bottom of the sliding groove.

[0017] By adopting the above technical solution, when the staff needs to change the distance between the two sliding rods, the staff first overcomes the separating spring of the turntable so that the spline on the turntable is engaged with the spline groove at the bottom of the connecting groove. Then, the rotation of the turntable can drive the rotation of the second gear, the second gear drives the rotation of the first gear, and the first gear drives the rotation of the bidirectional screw. The bidirectional screw changes the distance between the two sliding rods. Through the separating spring, the turntable and the second gear are disengaged when there is no operation by the staff, reducing the accidental touch of the staff.

[0018] Optionally, the milling machine body is provided with a connecting piece for fixing to one of the sliding blocks, the connecting piece includes a connecting sleeve, a worm wheel, a worm and a mating rod, the mating rod is provided on the sliding block, the connecting sleeve is rotatably connected to the milling machine body, the mating rod is provided with a thread groove threadedly connected to the connecting sleeve, the worm wheel is coaxially arranged with the connecting sleeve, the worm wheel is arranged on the connecting sleeve, the worm is rotatably connected to the milling machine body, and the worm is meshed with the worm wheel.

[0019] By adopting the above technical solution, one of the sliding blocks needs to be set on the milling machine body to facilitate the other sliding blocks to smoothly change the distance between them. The staff first aligns the sliding block with the matching rod with the connecting sleeve, and then rotates the worm. The worm drives the worm wheel to rotate, and the worm wheel drives the connecting sleeve to rotate. The connecting sleeve can be threadedly connected with the matching rod. The worm wheel has a self-locking effect, which reduces the displacement of the sliding block and the milling machine body when the milling machine body is milling grooves.

[0020] Optionally, a spray assembly for spraying coolant toward the blade is provided on the milling machine body, and the spray assembly includes a supply pump, a main pipe and a plurality of branch pipes. The supply pump is provided on the milling machine body, one end of the main pipe is provided at the liquid outlet of the supply pump, and a plurality of branch pipes are provided on the other end of the main pipe. The plurality of branch pipes correspond to a plurality of sliding blocks. A nozzle is provided on the sliding block, and another point of the branch pipe is connected to the nozzle.

[0021] By adopting the above technical solution, the blade will generate a lot of heat during the processing. The temperature of the blade itself is relatively high. The temperature of the blade itself can be reduced by the spray assembly to extend the service life of the blade. The staff can start the supply pump, and the supply pump supplies coolant to the branch pipe through the main pipe. The branch pipe then supplies the coolant to the nozzle on the sliding block. The nozzle sprays coolant onto the blade. Since the nozzle is set on the sliding block, the distance between the sliding blocks changes, and there is no need to adjust the direction of the nozzle. The nozzle will always cool the blade.

[0022] Optionally, the branch pipe is provided with a matching ring, the nozzle is provided with a matching pipe, and the matching pipe is connected to the matching ring through threads.

[0023] By adopting the above technical solution, when the blade needs to be replaced, the staff can remove the sliding block connected to the milling machine body through the connecting piece, and then unscrew the matching ring and the matching tube through threaded connection, and finally remove the blade from the drive shaft and the sliding block from the sliding rod, so that the staff can replace the blade conveniently. After the replacement is completed, the staff will connect the sliding block with the matching rod to the milling machine body, and then connect the matching ring to the matching tube to realize the supply of coolant. The structure is simple and convenient for the staff to install and disassemble.

[0024] Optionally, a lubricating box is provided on the milling machine body, and a lubricating channel communicating with the lubricating box is provided on the milling machine body, and the lubricating channel communicates with the drive shaft.

[0025] By adopting the above technical solution, the lubricating box is used to supply lubricating oil to the drive shaft. Through the sliding channel on the milling machine body, the lubricating oil can be sent between the drive shaft and the milling machine body, improving the service life of the drive shaft.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The adjusting component is used to change the distance between the sliding blocks, eliminating the need for manual adjustment of the blade distance by the operator, facilitating the production of needle plates of different specifications, and improving the applicable range of the equipment.

[0027] 2. The control member facilitates the operator to accurately adjust the distance between the blades; 3. The spraying component is used to cool the blades, reducing the continuous temperature rise of the blades and extending the service life of the blades. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of a needle groove milling machine.

[0029] Figure 2 is Figure 1 a schematic structural diagram of the connecting member in

[0030] Figure 3 is Figure 2 a schematic structural diagram of the control member in

[0031] Figure 4 is Figure 3 a cross-sectional view of the turntable in, used to show the mating structure of the second gear and the turntable.

[0032] Figure 5 is Figure 2 a schematic structural diagram of the spraying component in

[0033] Reference signs: 1, milling machine body; 11, positioning groove; 2, drive shaft; 3, blade; 4, sliding block; 5, adjusting assembly; 51, connecting rod; 52, adjusting block; 53, sliding rod; 54, control member; 541, bidirectional screw; 542, turntable; 543, first gear; 544, second gear; 545, connecting groove; 546, spline groove; 547, spline; 548, away spring; 55, positioning member; 551, positioning spring; 552, positioning bead; 553, sliding groove; 554, scale; 555, pointer; 6, spraying assembly; 61, supply pump; 62, main pipe; 63, branch pipe; 64, nozzle; 65, mating ring; 66, mating pipe; 7, connecting member; 71, connecting sleeve; 72, worm gear; 73, worm; 74, mating rod; 8, lubricating tank; 81, lubricating channel. Detailed implementation mode

[0034] The following further elaborates on this application Figure 1 - attached Figure 5 with reference to the attached drawings.

[0035] An embodiment of this application discloses a needle groove milling machine. Refer to Figure 1 and Figure 2 , a needle groove milling machine includes a milling machine body 1, a drive shaft 2, four blades 3, four sliding blocks 4, an adjusting assembly 5, and a spraying assembly 6. The drive shaft 2 is horizontally arranged, one end of the drive shaft 2 is rotatably connected to the milling machine body 1, the milling machine body 1 is used to drive the drive shaft 2 to rotate, the four blades 3 are distributed along the length direction of the drive shaft 2, the blades 3 are slidably connected to the drive shaft 2 along the length direction of the drive shaft 2, the four sliding blocks 4 correspond to the four blades 3 one by one, the blades 3 are rotatably connected to the sliding blocks 4, and the adjusting assembly 5 is used to change the distance between the four sliding blocks 4.

[0036] Refer to Figure 2 and Figure 3 , a connecting member 7 is arranged on the milling machine, and the connecting member 7 is used to connect one of the sliding blocks 4 to the milling machine body 1. The connecting member 7 includes a connecting sleeve 71, a worm gear 72, a worm 73, and a mating rod 74. The length direction of the mating rod 74 is parallel to the length direction of the drive shaft 2. The connecting sleeve 71 and the mating rod 74 are coaxially arranged. The connecting sleeve 71 is rotatably connected to the milling machine body 1, and the connecting sleeve 71 is used to be threadedly connected to the mating rod 74. The worm gear 72 and the connecting sleeve 71 are coaxially arranged, and the worm gear 72 is fixedly arranged on the connecting sleeve 71. The worm 73 is vertically arranged, the worm 73 is rotatably connected to the milling machine body 1, and the worm 73 meshes with the worm gear 72.

[0037] Refer to Figure 2 and Figure 3, the adjusting assembly 5 includes twelve connecting rods 51, six adjusting blocks 52, two sliding rods 53 and a control member 54. The two sliding rods 53 are respectively located on both sides of the sliding block 4. The length direction of the sliding rod 53 is parallel to the length direction of the driving shaft 2. The sliding rod 53 is horizontally and slidably connected to the milling machine body 1 in a direction perpendicular to the axis of the driving shaft 2. The six adjusting blocks 52 are evenly divided into two groups of adjusting blocks 52. The two groups of adjusting blocks 52 correspond to the two sliding rods 53 respectively. The adjusting blocks 52 in one group of adjusting blocks 52 are slidably connected to the sliding rod 53 along the length direction of the sliding rod 53. Three adjusting blocks 52 are arranged alternately with four sliding blocks 4. The twelve connecting rods 51 are evenly divided into two groups of connecting rods 51. The two groups of connecting rods 51 correspond to the two sliding rods 53 respectively. The six connecting rods 51 in the same group are respectively located between the adjusting blocks 52 and the sliding blocks 4. One end of the connecting rod 51 is rotatably connected to the adjusting block 52, and the other end of the connecting rod 51 is rotatably connected to the sliding block 4. The control member 54 is used to change the distance between the two sliding rods 53.

[0038] Reference Figure 3 And Figure 4 , the control member 54 includes a bidirectional screw 541, a turntable 542, a first gear 543 and a second gear 544. The length direction of the bidirectional screw 541 is parallel to the sliding direction of the sliding rod 53. The bidirectional screw 541 is rotatably connected to the milling machine body 1. The two sliding rods 53 are respectively threadedly connected to the thread sections with opposite helix directions of the bidirectional screw 541. The first gear 543 is coaxially arranged with the bidirectional screw 541. The first gear 543 is fixedly arranged at one end of the bidirectional screw 541. The second gear 544 is parallel to the first gear 543. The second gear 544 is rotatably connected to the milling machine body 1. The first gear 543 and the second gear 544 are kept meshed. A connecting groove 545 is opened on the end face of the second gear 544 facing away from the milling machine body 1. The turntable 542 is coaxially arranged with the second gear 544. One end of the turntable 542 is located in the connecting groove 545. A spline groove 546 is opened at the bottom of the connecting groove 545. The spline groove 546 extends along the axis direction of the rotating disc. A spline 547 is fixedly arranged at one end of the turntable 542 located in the connecting groove 545. The spline 547 is used for engaging with the spline groove 546. A away spring 548 is arranged on the second gear 544. The away spring 548 is coaxially arranged with the turntable 542. One end of the away spring 548 is fixedly arranged on the end face of the second gear 544. The other end of the away spring 548 is used to abut against the turntable 542 and keep the turntable 542 away from the second gear 544.

[0039] Refer to Figure 3 And Figure 4, a positioning member 55 is further provided on the second gear 544. The positioning member 55 includes a positioning spring 551 and a positioning bead 552. A sliding groove 553 is formed on the end face of the second gear 544 facing the milling machine body 1. The sliding groove 553 is eccentrically arranged and extends along the thickness direction of the second gear 544. The positioning bead 552 is slidably connected to the sliding groove 553 along the extending direction of the sliding groove 553. The length direction of the positioning spring 551 is parallel to the extending direction of the sliding groove 553. One end of the positioning spring 551 is fixedly arranged at the bottom of the sliding groove 553, and the other end of the positioning spring 551 is fixedly arranged on the positioning bead 552. A plurality of positioning grooves 11 are formed on the milling machine body 1. The plurality of positioning grooves 11 are evenly distributed circumferentially along the axis of the second gear 544. The positioning grooves 11 are used for engaging with the positioning beads 552. A plurality of scales 554 are provided on the first gear 543, and a pointer 555 is fixedly arranged on the milling machine body 1. The pointer 555 points to the scales 554 on the first gear 543.

[0040] Referring to Figure 3 and Figure 5 , the spraying assembly 6 includes a supply pump 61, a main pipe 62 and four branch pipes 63. The supply pump 61 is fixedly arranged on the milling machine body 1. One end of the main pipe 62 is fixedly arranged at the discharge port of the supply pump 61. One ends of the four branch pipes 63 are fixedly arranged at the other end of the main pipe 62. The four branch pipes 63 correspond to the four sliding blocks 4 one by one. A nozzle 64 is fixedly arranged on the sliding block 4. The nozzle 64 penetrates through the sliding block 4. A mating ring 65 is arranged on the four branch pipes 63. Threads are formed on the outer side wall of the mating ring 65. The upper end face of the nozzle 64 is rotatably connected with a mating pipe 66. The inner side wall of the mating pipe 66 is threadedly connected with the outer side wall of the mating ring 65. A lubricating tank 8 is fixedly arranged on the milling machine body 1. A lubricating channel 81 is formed on the milling machine body 1. One end of the lubricating channel 81 is communicated with the lubricating tank 8, and the other end of the lubricating channel 81 is communicated with the drive shaft 2.

[0041] The implementation principle of a needle groove milling machine according to an embodiment of the present application is as follows: When a worker needs to adjust the distance between the blades 3, the worker can move the turntable 542 close to the spline groove 546 of the second gear 544 against the elastic force of the away spring 548 until the spline 547 is engaged with the spline groove 546. Then the worker can rotate the turntable 542. The turntable 542 drives the second gear 544 to rotate. The second gear 544 drives the first gear 543 to rotate. The first gear 543 drives the bidirectional screw 541 to rotate. The bidirectional screw 541 drives the distance between the two sliding rods 53 to change.

[0042] The change in the distance between the two sliding rods 53 causes the change in the distance of the adjusting block 52 between the sliding rods 53. The adjusting block 52 drives the connecting rod 51 to rotate, and the connecting rod 51 drives the change in the distance between the sliding blocks 4, thereby changing the distance between the blades 3. During the adjustment process, the operator can judge whether the adjustment is in place according to the clicking sound of the positioning beads 552 on the positioning member 55 engaging with and disengaging from the positioning groove 11, and can better and accurately control the adjustment distance through the scale 554 and the pointer 555.

[0043] During the process of milling the groove by the blade 3, the operator can spray the coolant to the blade 3 through the spraying assembly 6, thereby reducing the temperature of the blade 3. Since one end of the branch pipe 63 is connected to the sliding block 4 through the fitting ring 65 and the fitting pipe 66, the branch pipe 63 can be adjusted along with the position adjustment of the sliding block 4.

[0044] When the blade 3 needs to be replaced, the operator can separate the sliding block 4 from the milling machine body 1 by the connecting member 7 and slide the sliding block 4 out of the sliding rod 53, and then the operation of replacing the blade 3 can be realized.

[0045] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A needle slot milling machine, characterized in that: The invention comprises a milling machine body (1), a driving shaft (2), a plurality of blades (3), a plurality of sliding blocks (4) and an adjusting assembly (5), wherein the driving shaft (2) is rotatably connected to the milling machine body (1), the plurality of blades (3) are slidably connected to the driving shaft (2) along the length direction of the driving shaft (2), the blades (3) are rotatably connected to the sliding blocks (4), and the adjusting assembly (5) is used to change the distance between the plurality of sliding blocks (4).

2. A needle slot milling machine according to claim 1, characterized in that: The adjustment assembly (5) comprises a plurality of connecting rods (51), a plurality of adjustment blocks (52), two sliding rods (53) and a control member (54). The two sliding rods (53) are respectively located on both sides of the blade (3). The length directions of the two sliding rods (53) are parallel to the length direction of the driving shaft (2). The two sliding rods (53) are respectively located on both sides of the driving shaft (2). The control member (54) is used to change the distance between the two sliding rods (53). The plurality of adjustment blocks (52) are respectively slidably connected to the sliding rods (53). One end of the connecting rod (51) is rotatably connected to the adjustment block (52). The other end of the connecting rod (51) is rotatably connected to an adjacent sliding block (4). One of the sliding blocks (4) is arranged on the milling machine body (1).

3. A needle slot milling machine according to claim 2, characterized in that: The control member (54) comprises a bidirectional screw (541) and a rotating disk (542); the length direction of the bidirectional screw (541) is parallel to the sliding direction of the two sliding rods (53); the bidirectional screw (541) is rotatably connected to the milling machine body (1); the two sliding rods (53) are respectively threadedly connected to thread segments of the bidirectional screw (541) with opposite rotation directions; and the rotating disk (542) is used to drive the bidirectional screw (541) to rotate.

4. A needle slot milling machine according to claim 3, characterized in that: The control member (54) further comprises a first gear (543) and a second gear (544); the first gear (543) is coaxially arranged with the bidirectional screw (541); the second gear (544) is rotatably connected to the milling machine body (1); the first gear (543) is meshed with the second gear (544); the rotating disk (542) is arranged on the second gear (544); the number of teeth of the first gear (543) is greater than the number of teeth of the second gear (544).

5. A needle slot milling machine according to claim 4, characterized in that: A positioning member (55) is provided on the second gear (544), and the positioning member (55) includes a positioning spring (551) and a positioning bead (552). A sliding groove (553) is provided on the side of the second gear (544) facing the milling machine body (1), and the positioning bead (552) is slidably connected in the sliding groove (553). A plurality of positioning grooves (11) are provided on the milling machine body (1), and the plurality of positioning grooves (11) are distributed along the axis of the second gear (544). The positioning spring (551) is used to keep the positioning bead (552) located in the positioning groove (11).

6. A needle slot milling machine according to claim 4, characterized in that: A connecting groove (545) is provided on the second gear (544) facing away from the milling machine body (1); one end of the rotating disk (542) is located in the connecting groove (545); a spline groove (546) is provided at the bottom of the connecting groove (545); a spline (547) is provided at one end of the rotating disk (542) located in the connecting groove (545); and a distance spring (548) is also provided on the second gear (544) for keeping the rotating disk (542) away from the bottom of the sliding groove (553).

7. The needle slot milling machine according to claim 2, characterized in that: The milling machine body (1) is provided with a connecting piece (7) for fixing with one of the sliding blocks (4), the connecting piece (7) comprising a connecting sleeve (71), a worm wheel (72), a worm (73) and a matching rod (74), the matching rod (74) being provided on the sliding block (4), the connecting sleeve (71) being rotatably connected to the milling machine body (1), the matching rod (74) being provided with a thread groove which is threadedly connected with the connecting sleeve (71), the worm wheel (72) being coaxially arranged with the connecting sleeve (71), the worm wheel (72) being arranged on the connecting sleeve (71), the worm (73) being rotatably connected to the milling machine body (1), and the worm (73) being meshed with the worm wheel (72).

8. The needle slot milling machine according to claim 1, characterized in that: The milling machine body (1) is provided with a spray assembly (6) for spraying cooling liquid toward the blade (3). The spray assembly (6) comprises a supply pump (61), a main pipe (62) and a plurality of branch pipes (63). The supply pump (61) is provided on the milling machine body (1). One end of the main pipe (62) is provided at a liquid outlet of the supply pump (61). The plurality of branch pipes (63) are provided at the other end of the main pipe (62). The plurality of branch pipes (63) correspond to the plurality of sliding blocks (4). The sliding block (4) is provided with a spray head (64). Another point of the branch pipe (63) is connected to the spray head (64).

9. A needle slot milling machine according to claim 8, characterized in that: The branch pipe (63) is provided with a matching ring (65), and the nozzle (64) is provided with a matching pipe (66), and the matching pipe (66) is connected to the matching ring (65) by means of threads.

10. The needle slot milling machine according to claim 1, characterized in that: The milling machine body (1) is provided with a lubrication box (8), the milling machine body (1) is provided with a lubrication channel (81) connected to the lubrication box (8), and the lubrication channel (81) is connected to the drive shaft (2).

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