CN111975066A

CN111975066A - Metal cutting numerically controlled fraise machine

Info

Publication number: CN111975066A
Application number: CN202010985782.4A
Authority: CN
Inventors: 嵇海平
Original assignee: Zhejiang Deqing Ten Mu Li Machinery Equipment Co ltd
Current assignee: Zhejiang Deqing Ten Mu Li Machinery Equipment Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2020-11-24

Abstract

The invention relates to the technical field of machining, and discloses a metal cutting numerical control milling machine, which comprises a machine base, wherein a driving box is movably arranged on the front surface of a machine base back base, a milling cutter installation box is fixedly arranged at the bottom of the driving box, a machining table is fixedly arranged at the top of the machine base, a clamp is fixedly arranged at the top of the machining table, a cooling liquid pipe is fixedly arranged on the side surface of the driving box, a milling cutter is movably arranged at the bottom of the milling cutter installation box, the outer side of the milling cutter is annularly provided with a clamping groove, a rotating air chamber is movably sleeved in the milling cutter installation box, the top and the bottom of the rotating air chamber are respectively provided with an air port, a piston sliding block is movably sleeved at the lower air port of the rotating air chamber, one end of the piston sliding block is clamped in the clamping groove, a clamping block is movably sleeved at the upper air port of the rotating air, the vibration amplitude is reduced.

Description

Metal cutting numerically controlled fraise machine

Technical Field

The invention relates to the technical field of machining, in particular to a metal cutting numerical control milling machine.

Background

Numerically controlled fraise machine is the very wide metal cutting processing equipment of using at present, and it utilizes numerical control technology direct control machinery to process the work piece, uses manpower sparingly high-efficient accuracy simultaneously, and numerically controlled fraise machine can carry out the processing of XYZ orientation to the part, although numerically controlled fraise machine processing is convenient, but still has some problems:

the numerical control milling machine mainly controls the milling cutter to process in X and Y directions, because the hardness of a metal workpiece is very high, the milling cutter can generate very large resistance when cutting processing is carried out, and the milling cutter can generate differential vibration with the metal workpiece along with the operation of the milling cutter, although the vibration amplitude is very small, the processing influence on precision machinery is still very large, the smoothness of the surface of the processed workpiece is very low, the subsequent polishing is also a very large challenge, meanwhile, the vibration can also generate looseness on the installation of the milling cutter, the processing error is generated slightly, and the milling cutter falling is generated seriously to cause accidents.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the metal cutting numerical control milling machine which has the advantages of high processing precision and small vibration influence and solves the problems in the background technology.

The invention provides the following technical scheme: a metal cutting numerical control milling machine comprises a machine base, wherein a driving box is movably mounted on the front surface of a machine base back base, a milling cutter installation box is fixedly mounted at the bottom of the driving box, a machining table is fixedly mounted at the top of the machine base, a clamp is fixedly mounted at the top of the machining table, a cooling liquid pipe is fixedly mounted on the side surface of the driving box, a milling cutter is movably mounted at the bottom of the milling cutter installation box, a clamping groove is annularly formed in the outer side of the milling cutter, a driving device is fixedly mounted at the top inside the driving box, a rotating connecting shaft is fixedly connected to the bottom of the driving device, an air cylinder is fixedly connected to the outer side of the rotating connecting shaft, a rotating air chamber is movably sleeved inside the milling cutter installation box, air ports are respectively formed in the top and the bottom of the rotating air chamber, a piston slider is movably, the tight piece of clamp has been cup jointed in the last gas port activity of rotation air chamber, it is the same with the outer lane diameter at milling cutter top to press from both sides the diameter that tight piece is fan-shaped and inner circle, the top of pressing from both sides tight piece and the bottom fixed connection who rotates the connecting axle, the inside fixed mounting who rotates the air chamber has the conical ring, the conical surface of conical ring and the conical surface of milling cutter laminate mutually, the shaft hole has been seted up at milling cutter's top, the fixed cover of inner circle in shaft hole has connect the spiral shell mandril, the top fixed connection of spiral shell mandril is in the bottom of rotating the connecting axle, the bottom side fixedly connected with spring in shaft hole, the one end fixedly connected with screw thread slider that the spring is close to the shaft hole axle center, the one end.

Preferably, the upper and lower air ports of the rotating air chamber, the clamping block and the piston sliding block are all subjected to strict sealing treatment.

Preferably, the number of the clamping blocks, the number of the piston sliding blocks and the number of the clamping grooves are four, and the clamping blocks, the piston sliding blocks and the clamping grooves are just positioned in the X-axis direction and the Y-axis direction of machining.

Preferably, the clamping block, the conical ring and the piston sliding block are all made of materials with large rigidity and small deformation.

Preferably, the bottom of the shaft hole is provided with a shaft groove with the diameter larger than that of the shaft hole, and the threaded sliding block and the spring are installed in the shaft groove.

The invention has the following beneficial effects:

through the inside threaded connection and the fastening of spiral shell tight hub connection with milling cutter, and milling cutter's surface supports presses the bottom of rotating the air chamber, the top of rotating the air chamber cup joints and presss from both sides tight piece, compare in prior art, will transversely produce the skew when milling cutter receives the vibration, can compress the piston slider that will the skew direction this moment, and then the gas in the compressed air chamber, gas can outwards push up the tight piece of clamp, press from both sides tight piece and promote the milling cutter top to the opposite direction that will skew, and then guaranteed that milling cutter can not produce the vibration skew, processing is still in the horizontal plane on the workpiece surface, the precision of having guaranteed processing is high.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of a milling cutter mounting structure according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a transverse cross-sectional view of the milling cutter mounting box of the present invention;

fig. 5 is a schematic view of the milling cutter structure of the present invention.

In the figure: 1. a machine base; 2. a drive box; 3. a milling cutter mounting box; 4. a processing table; 5. milling cutters; 6. a clamp; 7. a coolant tube; 8. a drive device; 9. rotating the connecting shaft; 10. a cylinder; 11. a clamping block; 12. rotating the air chamber; 13. screwing the shaft; 14. a conical ring; 15. a piston slide block; 16. a shaft hole; 17. a card slot; 18. a spring; 19. and (4) a threaded slider.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a metal cutting numerically controlled fraise machine comprises a machine base 1, a driving box 2 is movably mounted on the front surface of a back base of the machine base 1, a milling cutter mounting box 3 is fixedly mounted at the bottom of the driving box 2, a processing table 4 is fixedly mounted at the top of the machine base 1, a clamp 6 is fixedly mounted at the top of the processing table 4, a cooling liquid pipe 7 is fixedly mounted on the side surface of the driving box 2, a milling cutter 5 is movably mounted at the bottom of the milling cutter mounting box 3, a clamping groove 17 is annularly formed at the outer side of the milling cutter 5, a driving device 8 is fixedly mounted at the top of the interior of the driving box 2, a rotating connecting shaft 9 is fixedly connected at the bottom of the driving device 8, an air cylinder 10 is fixedly connected at the outer side of the rotating connecting shaft 9, a rotating air chamber 12 is movably sleeved in the, the lower gas port activity of rotating air chamber 12 has cup jointed piston slider 15, piston slider 15's one end joint is in draw-in groove 17, the last gas port activity of rotating air chamber 12 has cup jointed tight piece 11, it is the same with the outer lane diameter at milling cutter 5 top to press from both sides the diameter that tight piece 11 is fan-shaped and inner circle, the bottom fixed connection of the top of pressing from both sides tight piece 11 and rotation connecting axle 9, the inside fixed mounting who rotates air chamber 12 has conical ring 14, conical ring 14's the conical surface and milling cutter 5's the conical surface laminating mutually, shaft hole 16 has been seted up at milling cutter 5's top, the fixed cover of inner circle in shaft hole 16 has been cup jointed screw shaft 13, the bottom fixed connection of screw shaft 13 rotates the bottom of 9, the bottom side fixedly connected with spring 18 in shaft hole 16, spring 18 is close to the one end fixedly connected with screw slider 19 at shaft hole 16 center, screw slider 19 is close to the one end in shaft hole 16 axle center for the screw thread.

Wherein, the upper and lower gas port of rotation air chamber 12 all adopts strict sealed processing with pressing from both sides tight piece 11 and piston slider 15 bell and spigot joint department, and it is unchangeable only to have guaranteed that the leakproofness can realize rotating the volume of gas in the air chamber 12 for the elasticity of piston slider 15 and pressing from both sides tight piece 11 changes in pairs, thereby has guaranteed that the skew of milling cutter 5 under the vibration condition is extremely little, and the machining precision is high.

The four clamping blocks 11, the four piston sliding blocks 15 and the four clamping grooves 17 are arranged and are just positioned in the X-axis direction and the Y-axis direction of machining, and when a metal workpiece is machined and cut, the feed moves along the X-axis direction and the Y-axis direction, so that the generated vibration is also in the direction, and four cut parts are designed to act corresponding to the vibration force on the XY-axis.

The clamping block 11, the conical ring 14 and the piston slider 15 are all made of materials with large rigidity and small deformation, the materials of the parts are all parts directly contacted with the milling cutter 5 and are also ensured to play a role in fixing and limiting, and therefore, in order to ensure that the milling cutter 5 is clamped without deflection, the rigidity of the materials is required to be large enough.

The bottom of the shaft hole 16 is provided with a shaft groove with a diameter larger than that of the shaft hole 16, the threaded slider 19 and the spring 18 are mounted in the shaft groove, the shaft groove can be provided with the spring 18 and the threaded slider 19 for providing a threaded connection place for the screw shaft 13, and meanwhile, the threaded slider 19 can be matched to play a limiting protection role after the screw shaft 13 is connected, so that the milling cutter 5 is prevented from sliding up and down in the vertical direction.

The working principle is that before use, a metal workpiece is clamped on a clamp 6 and fixed, a processing program is input at a computer end and is guided into a controller of a numerical control milling machine, the milling machine is started, a driving box 2 can move to drive a milling cutter 5 to an initial position for processing, a driving device 8 in the driving box 2 drives a rotating connecting shaft 9 to rotate, then a clamping block 11 is driven to rotate, a rotating air chamber 12 and the milling cutter 5 are driven to rotate, the milling cutter 5 carries out cutting processing on the metal workpiece, a cooling liquid pipe 7 outputs cooling liquid to cool a processing part, when the milling cutter 5 is in contact with the metal workpiece, transverse vibration force can be generated, the vibration force is transmitted upwards through the milling cutter 5, the milling cutter 5 can be forced to deviate towards one direction, a piston slide block 15 in the direction can be compressed into the rotating air chamber 12, and the clamping block 11 at the top in the direction can be pushed outwards through air compression, the pushing force enables the top of the milling cutter 5 to deviate in the opposite direction, so that the milling cutter 5 cannot generate large deviation and can keep normal work, and the processed workpiece is high in precision.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a metal cutting numerically controlled fraise machine, includes frame (1), the positive movable mounting of frame (1) back of the body seat has drive case (2), the bottom fixed mounting of drive case (2) has milling cutter install bin (3), the top fixed mounting of frame (1) has processing platform (4), the top fixed mounting of processing platform (4) has anchor clamps (6), the side fixed mounting of drive case (2) has coolant liquid pipe (7), its characterized in that: the milling cutter comprises a milling cutter mounting box (3), wherein a milling cutter (5) is movably mounted at the bottom of the milling cutter mounting box (3), a clamping groove (17) is annularly formed in the outer side of the milling cutter (5), a driving device (8) is fixedly mounted at the top of the inner part of a driving box (2), a rotating connecting shaft (9) is fixedly connected to the bottom of the driving device (8), a cylinder (10) is fixedly connected to the outer side of the rotating connecting shaft (9), a rotating air chamber (12) is movably sleeved on the inner part of the milling cutter mounting box (3), air ports are respectively formed in the top and the bottom of the rotating air chamber (12), a piston slider (15) is movably sleeved on the lower air port of the rotating air chamber (12), one end of the piston slider (15) is clamped in the clamping groove (17), a clamping block (11) is movably sleeved on the upper air port of the rotating air chamber (12), and the clamping block (11) is fan-, the top of pressing from both sides tight piece (11) and the bottom fixed connection who rotates connecting axle (9), the inside fixed mounting who rotates air chamber (12) has conical ring (14), the conical surface of conical ring (14) and the conical surface of milling cutter (5) laminate mutually, shaft hole (16) have been seted up at the top of milling cutter (5), the fixed cover of inner circle in shaft hole (16) has connect spiral shell mandril (13), the bottom of the top fixed connection of spiral shell mandril (13) rotating connecting axle (9), the bottom side fixedly connected with spring (18) in shaft hole (16), one end fixedly connected with screw thread slider (19) that spring (18) are close to shaft hole (16) center, screw thread slider (19) are close to the one end in shaft hole (16) axle center for the screw thread curved surface and with spiral shell mandril (13) threaded connection.

2. A metal cutting numerically controlled fraise machine according to claim 1, wherein: the upper and lower air ports of the rotating air chamber (12) are tightly sealed with the sleeve joints of the clamping block (11) and the piston slide block (15).

3. A metal cutting numerically controlled fraise machine according to claim 1, wherein: the four clamping blocks (11), the four piston sliding blocks (15) and the four clamping grooves (17) are just positioned in the X-axis direction and the Y-axis direction of machining.

4. A metal cutting numerically controlled fraise machine according to claim 1, wherein: the clamping block (11), the conical ring (14) and the piston sliding block (15) are all made of materials with high rigidity and small deformation.

5. A metal cutting numerically controlled fraise machine according to claim 1, wherein: the bottom of the shaft hole (16) is provided with a shaft groove with the diameter larger than that of the shaft hole (16), and the threaded sliding block (19) and the spring (18) are arranged in the shaft groove.