CN111922394A

CN111922394A - Milling device for special-shaped parts with uneven bottom surfaces

Info

Publication number: CN111922394A
Application number: CN202010770354.XA
Authority: CN
Inventors: 孙振平; 陈马鑫; 邱广文
Original assignee: Dongguan Kailedi Numerical Control Science and Technology Co Ltd
Current assignee: Dongguan Kailedi Numerical Control Science and Technology Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-11-13

Abstract

The invention discloses a milling device for a special-shaped part with an uneven bottom surface, which comprises a base, a frame body, a supporting mechanism, a bearing table and a protective cover, wherein the bearing table is arranged on one side and the middle position of the top of the base, a control panel is arranged on the middle position of one end of the base, a cover body is arranged on the edge position of the top of the bearing table, the frame body is fixed on the middle position of the top end of the base, openings are formed in the middle positions of two ends of the cover body, hydraulic telescopic rods are fixed on the middle positions of the tops of two sides of the cover body and on two sides of the opening, the milling device for the special-shaped part with the uneven bottom surface can support the middle point and four corners of the bottom of the special-shaped part by arranging five height-adjustable supporting mechanisms and six clamping plates, has a better supporting effect, and is matched with the, the limitation to the special-shaped part can be completed, and the subsequent milling operation is convenient.

Description

Milling device for special-shaped parts with uneven bottom surfaces

Technical Field

The invention relates to the technical field of special-shaped part machining, in particular to a special-shaped part milling device with an uneven bottom surface.

Background

Milling is a production method with high productivity, the milling range is wide, and planes, steps, grooves, forming surfaces, spiral grooves, gear tooth surfaces, cutting, line scribing and the like can be milled, a milling machine is a machine tool for milling a workpiece by using a milling cutter, and a hole machining tool, such as a drill, a reamer and a boring cutter bar, can be arranged on the milling machine to machine a hole on the workpiece.

The existing milling machine can only clamp and mill a workpiece with a smooth bottom, but cannot clamp a special-shaped part with an uneven bottom, and a part to be machined is easy to shake under milling pressure during milling, so that the milling precision is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a milling device for a special-shaped part with an uneven bottom surface, which solves the problems that the existing milling machine in the background art can only clamp and mill a workpiece with a flat bottom, but cannot clamp the special-shaped part with the uneven bottom well, and the milling precision is affected because a part to be processed is easy to shake under the milling pressure during milling.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a dysmorphism part of bottom surface unevenness mills processingequipment, includes base, support body, supporting mechanism, plummer and protection casing, the plummer is all installed to one side and the intermediate position department at base top, and the intermediate position department of base one end installs control panel, the border position department at plummer top all is provided with the cover body, and the intermediate position department on base top is fixed with the support body, the opening has all been seted up to the intermediate position department at cover body both ends, and the intermediate position department and the open-ended both sides at cover body both sides top all are fixed with hydraulic telescoping rod, the position department that the cover body is inside to be close to hydraulic telescoping rod all is provided with splint, and hydraulic telescoping rod's output all passes cover body lateral wall and is connected with splint, the top of plummer evenly is provided with the mounting groove, and the supporting mechanism is all installed on the top, Guide pin bushing, guide pillar and installation piece, and the installation piece all is connected with the mounting groove, the top of installation piece all is fixed with the guide pillar, and the outside of guide pillar all overlaps and has the guide pin bushing, adjusting bolt is all installed to the bottom of guide pin bushing both sides, and all is fixed with spacing splint on the adjusting bolt of guide pin bushing inboard, all be fixed with compression spring between the bottom of guide pin bushing and the top of installation piece, and the top of guide pin bushing all is provided with articulated seat, the top of articulated seat all articulates there is the backup pad.

Optionally, a screw rod groove is formed in the middle position inside the base, screw rods are arranged at two ends inside the screw rod groove, sliding grooves are formed in two ends inside the base, the length of each sliding groove is three times that of the bearing platform, a driving motor is fixed on one side inside the base, and the output end of the driving motor forms a transmission structure with the screw rods through a belt pulley mechanism.

Optionally, an electromagnetic slide rail has been seted up on the inside top of support body, and the internally mounted of electromagnetic slide rail has the slider, the bottom mounting of slider has the rotating electrical machines, and the output of rotating electrical machines installs the hydraulic lifting rod, milling cutter is installed to the bottom of hydraulic lifting rod, and the outside of hydraulic lifting rod installs the protection casing, the water cavity has been seted up to the inside of protection casing, and the internal surface of protection casing evenly is provided with the shower nozzle.

Optionally, the top of support body is fixed with the water tank, and the water pump is installed to the inside bottom of water tank, the output of water pump is linked together through the water cavity of hose with the protection casing.

Optionally, the supporting mechanisms and the mounting groove form a threaded connection design through the mounting block, and the number of the supporting mechanisms is five, and the five supporting mechanisms are respectively located at the center and the four corner positions below the part to be processed.

Optionally, a connecting seat is installed at the middle position of the bottom of the bearing table, sliding seats are fixed at two ends of the bottom of the bearing table, screw rod sleeves are arranged at two ends of the inside of the connecting seat, the screw rod sleeves are matched with the screw rods, and the sliding seats are matched with the sliding grooves.

Optionally, the bottom of sliding seat has evenly seted up the ball groove, and the inside in ball groove all installs the ball, the cross-section in ball groove all is three fifths of ring design, and the shape of ball all is identical with the ball groove.

Optionally, the top of protection casing is provided with the installation cover, and installs and form the design for mould integral type between cover and the protection casing, the installation cover passes through the bolt and constitutes detachable structural design with hydraulic lifting rod, and the internal diameter of installation cover is identical with hydraulic lifting rod's external diameter, the protection casing is loudspeaker column structural design, and the internal diameter of protection casing from top to bottom crescent.

Optionally, both ends of the inside of the guide sleeve are provided with limiting strips, limiting grooves matched with the limiting strips are formed in positions, close to the limiting strips, of both ends of the guide pillar, and the guide sleeve and the guide pillar are movably connected through the limiting strips.

Optionally, the cross-section of the limiting clamping plate is arc-shaped, and the limiting clamping plate is attached to the outer surface of the guide pillar.

The invention provides a milling device for a special-shaped part with an uneven bottom surface, which has the following beneficial effects:

1. this special-shaped part of bottom surface unevenness mills processingequipment, through being provided with five supporting mechanism and six splint, can carry out five point type support to special-shaped part, supporting mechanism is the design of elasticity adjustable, its backup pad can laminate with the special-shaped part bottom of unevenness just, support special-shaped part bottom mid point and four turnings, it is more identical with special-shaped part bottom shape, the supporting effect is better, special-shaped part places more stably and is difficult for taking place to rock, cooperation splint carry out the centre gripping to special-shaped part all around, alright accomplish the spacing to special-shaped part, subsequent processing operation that mills of being convenient for.

2. This dysmorphism part of bottom surface unevenness mills processingequipment through being provided with electromagnetism slide rail and driving motor, and driving motor accessible pulley mechanism drives the lead screw rotatory to make the lead screw cover remove about, drive the plummer then and remove, the electromagnetism slide rail can drive the slider and carry out the back-and-forth movement, thereby drive the milling cutter back-and-forth movement, the two combines to mill processing, and processing is more comprehensive to each position at dysmorphism part top.

3. This special-shaped part of bottom surface unevenness mills processingequipment through being provided with two plummer, adds that a plummer removes to the milling cutter below and mills processing man-hour, and another plummer is located the both sides of base and unloads and the material loading, and the device can be in processing state all the time, need not to stop processing and again unloads the filler operation, and flow design, work efficiency is higher.

4. This dysmorphism part of bottom surface unevenness mills processingequipment, through being provided with water tank and protection casing, the protection casing can block the sweeps of cutting that the milling process produced on the one hand, avoids the sweeps to spatter all around and causes the threat to staff's safety, is equipped with water cavity and shower nozzle in the on the other hand protection casing, can cooperate water tank and water pump to use, cools off milling cutter, extension milling cutter's life.

Drawings

FIG. 1 is a schematic side view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic top view of the base of the present invention;

FIG. 4 is a schematic structural view of a support mechanism according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a base; 2. a frame body; 3. an electromagnetic slide rail; 4. a water tank; 5. a slider; 6. a water pump; 7. a support mechanism; 8. a bearing table; 801. mounting grooves; 9. a sliding groove; 10. a screw rod sleeve; 11. a connecting seat; 12. a screw rod groove; 13. a sliding seat; 14. a ball groove; 1401. a ball bearing; 15. a hydraulic telescopic rod; 16. a cover body; 17. an opening; 18. a rotating electric machine; 19. a protective cover; 1901. a water chamber; 1902. installing a sleeve; 1903. a spray head; 20. a control panel; 21. a drive motor; 22. a belt pulley mechanism; 23. a splint; 24. a screw rod; 25. a support plate; 26. a hinged seat; 27. a guide sleeve; 2701. a limiting strip; 28. a guide post; 2801. a limiting groove; 29. adjusting the bolt; 30. a limiting clamp plate; 31. a compression spring; 32. mounting blocks; 33. a hydraulic lifting rod; 34. provided is a milling cutter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", "third", and the like are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations.

Referring to fig. 1 to 5, the present invention provides a technical solution: a milling device for special-shaped parts with uneven bottom surfaces comprises a base 1, a frame body 2, a supporting mechanism 7, a bearing platform 8 and a protective cover 19, wherein the bearing platform 8 is installed on one side and the middle position of the top of the base 1, a control panel 20 is installed on the middle position of one end of the base 1, a screw rod groove 12 is formed in the middle position of the inner part of the base 1, screw rods 24 are arranged at two ends of the inner part of the screw rod groove 12, sliding grooves 9 are formed in two ends of the inner part of the base 1, the length of each sliding groove 9 is three times that of the corresponding bearing platform 8, a driving motor 21 is fixed on one side of the inner part of the base 1, the output end of the driving motor 21 and the screw rods 24 form a transmission structure through a belt pulley mechanism 22, the transmission structure is designed to enable the driving motor 21 to work and drive the two screw rods 24 to synchronously rotate through the transmission of, and difficult emergence is rocked when plummer 8 removes, and the precision of processing is higher, and three times design cooperation two plummers 8 make the device can be in the processing state all the time, need not to stop processing and then carry out the operation of packing of unloading, and the flow operation, work efficiency is higher.

Connecting seat 11 is installed to the intermediate position department of plummer 8 bottom, and the both ends of plummer 8 bottom all are fixed with sliding seat 13, the inside both ends of connecting seat 11 all are provided with lead screw cover 10, and lead screw cover 10 all is identical with lead screw 24, sliding seat 13 all is identical with sliding tray 9, connecting seat 11 is connected with plummer 8 bottom, and lead screw cover 10 is identical with lead screw 24, thereby lead screw 24 is rotatory can drive connecting seat 11 and remove about moving and drive plummer 8 and control, sliding seat 13 can play the supporting role to plummer 8, sliding seat 13 is identical with sliding tray 9, difficult emergence when making plummer 8 remove rocks, the precision of processing is higher.

The ball groove 14 has evenly been seted up to the bottom of sliding seat 13, and ball 1401 is all installed to the inside in ball groove 14, the cross-section in ball groove 14 all is three fifths of ring design, and ball 1401's shape all is identical with ball groove 14, ball 1401 design can be with sliding friction conversion rolling friction between sliding seat 13 and the sliding tray 9, reduce frictional resistance, it is more smooth and easy to make plummer 8 remove, and three fifths of ring design makes ball 1401 diameter be greater than ball groove 14 bottom diameter, consequently, ball 1401 is difficult for droing, the design is more reasonable.

The edge position of the top of the bearing table 8 is provided with a cover body 16, the middle position of the top end of the base 1 is fixed with a frame body 2, the top end of the inside of the frame body 2 is provided with an electromagnetic slide rail 3, the inside of the electromagnetic slide rail 3 is provided with a slide block 5, the bottom end of the slide block 5 is fixed with a rotating motor 18, the output end of the rotating motor 18 is provided with a hydraulic lifting rod 33, the bottom end of the hydraulic lifting rod 33 is provided with a milling cutter 34, the outer side of the hydraulic lifting rod 33 is provided with a protective cover 19, the inside of the protective cover 19 is provided with a water cavity 1901, the inner surface of the protective cover 19 is uniformly provided with a spray head 1903, the electromagnetic slide rail 3 can drive the slide block 5 to move back and forth to drive the milling cutter 34 to move back and forth, all positions of the top of the special-shaped part can be, hydraulic lifting rod 33 work can drive milling cutter 34 and reciprocate to the degree of depth of control processing, protection casing 19 can block the cutting sweeps that the milling process produced on the one hand, avoids the sweeps to splash all around and causes the threat to staff's safety, and water cavity 1901 and shower nozzle 1903 can cooperate water tank 4 and water pump 6 to use, cools off milling cutter 34, extension milling cutter 34's life.

The top of protection casing 19 is provided with installation cover 1902, and for mould integral type shaping design between installation cover 1902 and the protection casing 19, installation cover 1902 passes through the bolt and constitutes detachable structural design with hydraulic lifting rod 33, and the internal diameter of installation cover 1902 is identical with hydraulic lifting rod 33's external diameter, protection casing 19 is loudspeaker column structural design, and protection casing 19's internal diameter from top to bottom crescent, mould integral type shaping design makes and is connected more firm between protection casing 19 and the installation cover 1902, it is difficult that the security of fracture use is higher in the junction, and detachable structural design makes protection casing 19 be more convenient for assemble and dismantle, be convenient for wash and maintain protection casing 19, it is more reasonable to design.

The top of support body 2 is fixed with water tank 4, and water pump 6 is installed to the inside bottom of water tank 4, and the output of water pump 6 is linked together through hose and the water cavity 1901 of protection casing 19, and during operation water pump 6 work is gone into the water cavity 1901 of protection casing 19 with the coolant liquid pump, and through the blowout of shower nozzle 1903 again, cool off milling cutter 34, extension milling cutter 34's life.

The middle positions of two ends of the cover body 16 are respectively provided with an opening 17, the middle positions of the tops of two sides of the cover body 16 and two sides of the opening 17 are respectively fixed with a hydraulic telescopic rod 15, the position of the inner part of the cover body 16 close to the hydraulic telescopic rod 15 is respectively provided with a clamping plate 23, the output end of the hydraulic telescopic rod 15 penetrates through the side wall of the cover body 16 to be connected with the clamping plate 23, the top end of the bearing table 8 is uniformly provided with a mounting groove 801, the top end of the mounting groove 801 is respectively provided with a supporting mechanism 7, the supporting mechanism 7 and the mounting groove 801 form a threaded connection design through a mounting block 32, the supporting mechanisms 7 are provided with five parts, the five supporting mechanisms 7 are respectively positioned at the center and four corner positions below the part to be processed, the threaded connection design and assembly are more convenient, the dismounting and the maintenance are convenient, the design is more, the special-shaped part is more stable to be placed and is not easy to shake.

The supporting mechanism 7 comprises a supporting plate 25, a guide sleeve 27, a guide post 28 and an installation block 32, the installation block 32 is connected with the installation groove 801, the two ends inside the guide sleeve 27 are provided with limit strips 2701, the position of the two ends of the guide post 28 close to the limit strips 2701 is provided with limit grooves 2801 matched with the limit strips 2701, the guide sleeve 27 is movably connected with the guide post 28 through the limit strips 2701, the limit strips 2701 and the limit grooves 2801 are designed to enable the connection between the guide sleeve 27 and the guide post 28 to be more stable, the guide sleeve 27 is not prone to shaking on the guide post 28 and can only move up and down, and therefore the supporting effect on the special-shaped part is better.

The top of installation piece 32 all is fixed with guide pillar 28, and the outside of guide pillar 28 all overlaps there is guide pin bushing 27, adjusting bolt 29 is all installed to the bottom of guide pin bushing 27 both sides, and all be fixed with spacing splint 30 on the adjusting bolt 29 of guide pin bushing 27 inboard, spacing splint 30's cross-section all is the arc, and spacing splint 30 all laminates mutually with the surface of guide pillar 28, the design of laminating mutually of arc makes the area of contact between spacing splint 30 and guide pillar 28 bigger, and it is better to the spacing centre gripping effect of guide pillar 28, thereby make supporting mechanism 7 highly can keep invariable, support to special-shaped part is more stable.

All be fixed with compression spring 31 between the bottom of guide pin bushing 27 and the top of installation piece 32, and the top of guide pin bushing 27 all is provided with articulated seat 26, and the top of articulated seat 26 all articulates there is backup pad 25.

In conclusion, when the milling device for the special-shaped part with the uneven bottom surface is used, a power supply is switched on, a part to be processed is placed above the supporting mechanism 7 in the cover body 16, the compression spring 31 is compressed under the action of the gravity of the part, the guide sleeve 27 moves downwards along the guide post 28 and then drives the supporting plate 25 to move downwards, the supporting plate 25 abuts against the bottom end of the special-shaped part, the supporting plate 25 is hinged and the inclination angle of the supporting plate 25 is variable, so that the supporting plate can be attached to the bottom end of the uneven special-shaped part, the adjusting bolt 29 can be rotated after the position of the supporting plate 25 is determined, the limiting clamping plate 30 clamps the guide post 28, the guide sleeve 27 cannot move along the guide post 28, the supporting mechanism 7 is limited, the supporting mechanism 7 can support the bottom point and four corners of the special-shaped part, and then the hydraulic telescopic rod 15 works to drive the, thereby completing the limitation of the special-shaped parts, then, the driving motor 21 works and drives the two lead screws 24 to synchronously rotate through the belt pulley mechanism 22, the lead screw sleeve 10 matched with the lead screw 24 is arranged in the connecting seat 11, therefore, the lead screw 24 can drive the connecting seat 11 to move left and right through the rotation of the lead screw 24, namely, when the driving motor 21 rotates clockwise, the lead screw 24 rotates clockwise, the connecting seat 11 moves right, when the driving motor 21 rotates anticlockwise, the connecting seat 11 moves left, the connecting seat 11 moves to drive the bearing platform 8 above the connecting seat to synchronously move, when in processing, one bearing platform 8 moves to the lower part of the milling cutter 34 for milling processing, the other bearing platform 8 is positioned at the left side of the base 1 for feeding, after the processing, the two bearing platforms 8 move right synchronously, the bearing platform 8 at the middle part of the original base 1 moves to the right side for discharging and feeding again, and the, after the secondary processing is finished, the two bearing tables 8 synchronously move leftwards and circularly reciprocate to realize the flow type processing, the electromagnetic slide rail 3 can drive the slide block 5 to move forwards and backwards, thereby driving the milling cutter 34 to move back and forth, milling various positions at the top of the special-shaped part by matching with the left and right movement of the bearing platform 8, driving the milling cutter 34 to rotate at high speed by the operation of the rotating motor 18 during the processing, milling the part by the milling cutter 34 contacting with the surface of the part, driving the milling cutter 34 to move up and down by the operation of the hydraulic lifting rod 33, thereby controlling the processing depth, when in work, the water pump 6 works to pump the cooling liquid into the water cavity 1901 of the protective cover 19 and then the cooling liquid is sprayed out through the spray head 1903, the milling cutter 34 is cooled, the service life of the milling cutter 34 is prolonged, the cooling liquid falls into the cover body 16 under the action of gravity, and is discharged by a drain pipe, the drain pipe can be connected with a filtering device, and the cooling liquid can be reused after being filtered.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a special-shaped parts of bottom surface unevenness mills processingequipment, includes base (1), support body (2), supporting mechanism (7), plummer (8) and protection casing (19), its characterized in that: the device comprises a base (1), a bearing table (8) is installed at one side of the top of the base (1) and at the middle position of one end of the base (1), a control panel (20) is installed at the middle position of one end of the base (1), cover bodies (16) are arranged at the edge positions of the top of the bearing table (8), a frame body (2) is fixed at the middle position of the top end of the base (1), openings (17) are formed in the middle positions of two ends of each cover body (16), hydraulic telescopic rods (15) are fixed at the middle positions of the tops of two sides of each cover body (16) and at two sides of each opening (17), clamping plates (23) are arranged at positions close to the hydraulic telescopic rods (15) in the cover bodies (16), the output ends of the hydraulic telescopic rods (15) penetrate through the side walls of the cover bodies (16) to be connected with the clamping plates (23), mounting grooves (801) are evenly formed in the top end of the bearing, the supporting mechanism (7) comprises a supporting plate (25), a guide sleeve (27), a guide post (28) and an installation block (32), the installation block (32) is connected with an installation groove (801), the guide post (28) is fixed to the top end of the installation block (32), the guide sleeve (27) is sleeved on the outer side of the guide post (28), adjusting bolts (29) are installed at the bottom ends of two sides of the guide sleeve (27), a limiting clamping plate (30) is fixed to the adjusting bolts (29) on the inner side of the guide sleeve (27), a compression spring (31) is fixed between the bottom end of the guide sleeve (27) and the top end of the installation block (32), a hinged seat (26) is arranged at the top end of the guide sleeve (27), and the supporting plate (25) is hinged to the top end of the hinged seat (26).

2. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: screw rod groove (12) have been seted up to the inside intermediate position department of base (1), and the inside both ends in screw rod groove (12) all are provided with lead screw (24), sliding tray (9) have all been seted up at the inside both ends of base (1), and the length of sliding tray (9) is the triple of plummer (8), the inside one side of base (1) is fixed with driving motor (21), and the output of driving motor (21) passes through belt pulley mechanism (22) and constitutes transmission structure with lead screw (24).

3. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: electromagnetism slide rail (3) have been seted up on the inside top of support body (2), and the internally mounted of electromagnetism slide rail (3) has slider (5), the bottom mounting of slider (5) has rotating electrical machines (18), and the output of rotating electrical machines (18) installs hydraulic lifting rod (33), milling cutter (34) are installed to the bottom of hydraulic lifting rod (33), and the outside of hydraulic lifting rod (33) installs protection casing (19), water cavity (1901) have been seted up to the inside of protection casing (19), and the internal surface of protection casing (19) evenly is provided with shower nozzle (1903).

4. The special-shaped part milling device with the uneven bottom surface as claimed in claim 3, wherein: the water pump is characterized in that a water tank (4) is fixed to the top end of the frame body (2), a water pump (6) is installed at the bottom end inside the water tank (4), and the output end of the water pump (6) is communicated with a water cavity (1901) of the protective cover (19) through a hose.

5. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: the supporting mechanism (7) is in threaded connection with the mounting groove (801) through the mounting block (32), five supporting mechanisms (7) are arranged, and the five supporting mechanisms (7) are respectively located at the center and four corner positions below the part to be processed.

6. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: connecting seat (11) are installed to the intermediate position department of plummer (8) bottom, and the both ends of plummer (8) bottom all are fixed with sliding seat (13), the inside both ends of connecting seat (11) all are provided with lead screw cover (10), and lead screw cover (10) all are identical with lead screw (24), sliding seat (13) all are identical with sliding tray (9).

7. The special-shaped part milling device with the uneven bottom surface as claimed in claim 6, wherein: the bottom end of the sliding seat (13) is uniformly provided with ball grooves (14), balls (1401) are mounted in the ball grooves (14), the cross sections of the ball grooves (14) are designed into three-fifths of a circle, and the shapes of the balls (1401) are matched with the ball grooves (14).

8. The special-shaped part milling device with the uneven bottom surface as claimed in claim 3, wherein: the top of protection casing (19) is provided with installation cover (1902), and installs between cover (1902) and protection casing (19) for mould integral type shaping design, installation cover (1902) constitutes detachable structural design through bolt and hydraulic lifting rod (33), and the internal diameter of installation cover (1902) is identical with the external diameter of hydraulic lifting rod (33), protection casing (19) are loudspeaker form structural design, and the internal diameter of protection casing (19) from top to bottom crescent.

9. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: the guide sleeve is characterized in that limiting strips (2701) are arranged at two ends of the inner part of the guide sleeve (27), limiting grooves (2801) matched with the limiting strips (2701) are formed in positions, close to the limiting strips (2701), of two ends of the guide column (28), and the guide sleeve (27) and the guide column (28) form a movable connection design through the limiting strips (2701).

10. The special-shaped part milling device with the uneven bottom surface as claimed in claim 1, wherein: the cross section of the limiting clamping plate (30) is arc-shaped, and the limiting clamping plate (30) is attached to the outer surface of the guide pillar (28).