CN117774146B - CNC milling device and method for machining carbon ceramic brake disc - Google Patents
CNC milling device and method for machining carbon ceramic brake disc Download PDFInfo
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- CN117774146B CN117774146B CN202410219800.6A CN202410219800A CN117774146B CN 117774146 B CN117774146 B CN 117774146B CN 202410219800 A CN202410219800 A CN 202410219800A CN 117774146 B CN117774146 B CN 117774146B
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- ceramic brake
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- 239000000919 ceramic Substances 0.000 title claims abstract description 152
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 151
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 238000003801 milling Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003754 machining Methods 0.000 title description 3
- 230000007246 mechanism Effects 0.000 claims abstract description 119
- 238000005498 polishing Methods 0.000 claims abstract description 95
- 230000007306 turnover Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims description 19
- 238000007689 inspection Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 26
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a device and a method for CNC milling of a carbon ceramic brake disc, and relates to the technical field of production of carbon ceramic brake discs, wherein the device comprises a turnover mechanism fixedly arranged on a backing plate, an automatic feeding mechanism arranged on the left side of the turnover mechanism, a milling mechanism arranged on the right side of the turnover mechanism, and an automatic tooling mechanism for fixing blanks by tooling and an automatic polishing mechanism for polishing burrs are arranged on a platform; the automatic tooling mechanism comprises a first hydraulic motor fixedly arranged on the platform, a rotating shaft fixedly arranged on an output shaft of the first hydraulic motor, and a rotating seat fixedly arranged on the rotating shaft, wherein a horizontally arranged hollow shaft is rotatably arranged in the rotating seat; the automatic feeding mechanism comprises a hydraulic sliding table fixedly arranged on the base plate, and a fixed seat fixedly arranged on the top surface of a movable table of the hydraulic sliding table, and a supporting rod is fixedly arranged on the right end face of the fixed seat. The beneficial effects of the invention are as follows: the production time of a single carbon ceramic brake disc is shortened, the production efficiency of the carbon ceramic brake disc is greatly improved, and the processing quality of the carbon ceramic brake disc is improved.
Description
Technical Field
The invention relates to the technical field of carbon ceramic brake discs, in particular to a device and a method for CNC milling of a carbon ceramic brake disc.
Background
At present, with the popularization of new energy vehicles and the improvement of running speed, the use requirement of the brake disc is higher and higher, and the traditional steel brake disc has the defects of large weight, poor heat resistance, easy deformation and the like, while the carbon ceramic brake disc has the advantages of light weight, high temperature stability, wear resistance and the like, so that the traditional steel brake disc is gradually replaced.
The raw materials for manufacturing the carbon ceramic brake disc are composed of carbon fibers and ceramics, wherein the carbon fibers have the advantages of high strength, high modulus, low density and the like, and the ceramics have the advantages of high temperature stability, wear resistance and the like.
The structure of the carbon ceramic brake disc 1 produced in a workshop is shown in fig. 1-3, the carbon ceramic brake disc comprises a carbon ceramic brake disc body 2 and a mounting hole 3 formed in the center of the carbon ceramic brake disc body 2, the mounting hole 3 is used for mounting a wheel hub, a plurality of arc-shaped sinking grooves 4 are uniformly formed in the end face of the carbon ceramic brake disc 1 and along the circumferential direction of the mounting hole 3, each arc-shaped sinking groove 4 is communicated with the mounting hole 3, and the arc-shaped sinking grooves 4 are used for being matched with connecting pieces on the wheel hub. The carbon ceramic brake disc is formed by milling a blank 5 shown in fig. 4-5, wherein the blank 5 comprises a carbon ceramic brake disc body 2 and a mounting hole 3 formed in the center of the carbon ceramic brake disc body 2.
The method for producing and processing the carbon ceramic brake disc 1 by using the blank 5 in a workshop comprises the following steps:
s1, a worker takes out a blank 5 from a charging basket, places the blank 5 on a tooling table 6 of a milling machine horizontally, and fixes the blank 5 on the table surface of the tooling table 6 through a pressing plate 7 on the tooling table 6 to fix the blank 5, as shown in FIG. 6;
S2, controlling a milling cutter 8 of a milling machine to enter the mounting hole 3 of the blank 5 downwards, as shown in FIG. 7;
S3, controlling the milling cutter 8 to move towards the inner wall of the mounting hole 3 of the blank 5, milling the first arc-shaped sinking groove 4 on the blank 5 by the milling cutter 8, and controlling the milling cutter 8 to retract into the mounting hole 3 again after milling the first arc-shaped sinking groove 4 as shown in FIG. 8;
S4, controlling the milling cutter 8 to move along the circumference of the mounting hole 3 for a certain distance, and then repeating the operation of the step S3, so that a second arc-shaped countersink 4 can be milled in the circumference of the mounting hole 3; repeating the operation of the step S4 for a plurality of times, and milling to obtain a semi-finished carbon ceramic brake disc with a plurality of arc-shaped sinking grooves 4, wherein burrs exist on the outer edges of the arc-shaped sinking grooves 4 of the semi-finished carbon ceramic brake disc;
S5, a worker turns the semi-finished carbon ceramic brake disc from a milling machine to a tool table of a grinding machine, burrs on the outer edges of the arc-shaped sinking grooves 4 are removed through a grinding disc on the grinding machine, and after the semi-finished carbon ceramic brake disc is polished for a period of time, the carbon ceramic brake disc 1 shown in the figures 1-3 can be finally processed; after processing, workers turn the carbon ceramic brake disc 1 to a quality inspection procedure at the rear stage;
S6, repeating the operations of the steps S1-S5, so as to continuously produce a plurality of carbon ceramic brake discs 1.
However, this method, although producing the carbon ceramic brake disc 1 using the blank 5, still has the following technical drawbacks in actual operation:
I. In step S1, it is necessary to manually take out the blanks 5 from the basket one by one and manually fix the blanks 5 on the table surface of the tooling table 6 of the milling machine by the pressing plate 7, and the whole operation is completed by manual work, which clearly increases the production time of the single-piece carbon ceramic brake disc 1 and further reduces the production efficiency of the carbon ceramic brake disc 1. In step S5, after the carbon ceramic brake disc 1 is produced, the carbon ceramic brake disc 1 is manually transferred to the quality inspection process at the rear stage, the intermediate turnover time is long, the production time of the single-piece carbon ceramic brake disc 1 is further increased, and the production efficiency of the carbon ceramic brake disc 1 is further reduced.
II. In the steps S4-S5, after the semi-finished carbon ceramic brake disc is milled, the semi-finished carbon ceramic brake disc needs to be manually transferred to a tooling table of a grinding machine, and the middle transfer and tooling process delay time, so that the production time of a single carbon ceramic brake disc is increased, and the production efficiency of the carbon ceramic brake disc 1 is further reduced.
In step S3, when the milling cutter 8 radially mills the inner wall of the mounting hole 3 of the blank 5, if the generated milling force is too large, the outer edge of the blank 5 is easy to deform, that is, the outer diameter of the machined carbon ceramic brake disc 1 does not meet the design requirement, so that the machining quality of the carbon ceramic brake disc 1 is reduced. Therefore, there is a need for a device and a method for CNC milling of a carbon ceramic brake disc, which can shorten the production time of a single carbon ceramic brake disc, greatly improve the production efficiency of the carbon ceramic brake disc and improve the processing quality of the carbon ceramic brake disc.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device and a method for CNC milling of a carbon ceramic brake disc, which are used for shortening the production time of a single carbon ceramic brake disc, greatly improving the production efficiency of the carbon ceramic brake disc and improving the processing quality of the carbon ceramic brake disc.
The aim of the invention is achieved by the following technical scheme: the CNC milling device for the carbon ceramic brake disc comprises a turnover mechanism fixedly arranged on a base plate, an automatic feeding mechanism arranged on the left side of the turnover mechanism and a milling mechanism arranged on the right side of the turnover mechanism, wherein the turnover mechanism comprises a main hydraulic motor fixedly arranged on the base plate and a platform fixedly arranged on an output shaft of the main hydraulic motor, an automatic tool mechanism for fixing blanks of tools and an automatic polishing mechanism for polishing burrs are arranged on the platform, and the automatic polishing mechanism is positioned on the right side of the automatic tool mechanism;
The automatic tooling mechanism comprises a first hydraulic motor fixedly arranged on the platform, a rotating shaft fixedly arranged on an output shaft of the first hydraulic motor and a rotating seat fixedly arranged on the rotating shaft, wherein a hollow shaft which is horizontally arranged is rotatably arranged in the rotating seat, and the hollow shaft penetrates through the rotating seat; the left end part of the hollow shaft is fixedly provided with a disc integrally formed with the hollow shaft, the left end surface of the disc is provided with a positioning hole communicated with an inner hole of the hollow shaft, the diameter of the positioning hole is equal to the outer diameter of a blank, the depth of the positioning hole is equal to the thickness of the blank, the top wall of the positioning hole is provided with a radial hole, the top end opening of the radial hole is provided with a clamping cylinder fixedly arranged on the top wall of the disc, a piston rod of the clamping cylinder extends into the radial hole, the extending end is fixedly provided with a chuck which is in sliding fit with the radial hole, and the bottom surface of the chuck is provided with an arc-shaped groove; the right end part of the hollow shaft is connected with a driving mechanism for driving the hollow shaft to rotate;
The automatic polishing mechanism comprises a bracket fixedly arranged on the platform and a polishing oil cylinder fixedly arranged on the top surface of the bracket, a piston rod of the polishing oil cylinder downwards penetrates through the top wall of the bracket, a polishing motor is fixedly arranged on the extending end, and an output shaft of the polishing motor is connected with a millstone;
The automatic feeding mechanism comprises a hydraulic sliding table fixedly arranged on the base plate, and a fixed seat fixedly arranged on the top surface of a movable table of the hydraulic sliding table, wherein a supporting rod is fixedly arranged on the right end face of the fixed seat, the diameter of the supporting rod is equal to that of a mounting hole of a blank, a pushing oil cylinder is fixedly arranged on the left end face of the fixed seat, a piston rod of the pushing oil cylinder penetrates through the fixed seat, an annular pushing plate is fixedly arranged on the extending end, and the annular pushing plate is sleeved on the supporting rod; the support rod is sleeved with a plurality of blanks which are sequentially arranged along the length direction of the support rod, the blank on the leftmost side leans against the right end face of the annular push plate, and the right end face of the blank on the rightmost side is flush with the right end face of the support rod.
The bottom of the positioning hole and the upper end and the lower end of the positioning hole are respectively provided with a horizontal hole, the two horizontal holes penetrate right through the right end face of the disc, the right end ports of the two horizontal holes are respectively fixedly provided with a blanking cylinder, and the piston rods of the two blanking cylinders are respectively fixedly provided with a blanking block which is slidably arranged in the horizontal holes.
The driving mechanism comprises a second hydraulic motor fixedly arranged on the top surface of the rotating seat, a driving gear fixedly arranged on an output shaft of the second hydraulic motor, and a driven gear fixedly arranged on the right end part of the hollow shaft, and the driven gear is meshed with the driving gear.
The polishing oil cylinder, the polishing motor and the polishing disc of the automatic polishing mechanism are coaxially arranged.
The automatic feeding mechanism comprises two pushing oil cylinders, and piston rods of the two pushing oil cylinders are respectively fixedly arranged at the upper end and the lower end of the annular pushing plate.
The milling mechanism comprises a machine table fixedly arranged on the base plate, a horizontal oil cylinder fixedly arranged on the machine table, and an L plate fixedly arranged on the acting end of a piston rod of the horizontal oil cylinder, wherein a vertical oil cylinder is fixedly arranged on the horizontal plate of the L plate, a sliding block which is slidably arranged on a vertical plate of the L plate is fixedly arranged on the acting end of the piston rod of the vertical oil cylinder, a third hydraulic motor is fixedly arranged on the left end face of the sliding block, the output shaft of the third hydraulic motor is arranged towards the left, and a milling cutter is connected to the output shaft; the vertical plate of the L plate is fixedly provided with a guide rail, and the sliding block is slidably arranged on the guide rail.
The lower part of the platform is provided with a roller conveyor fixedly arranged on the base plate, and the roller conveyor extends rightwards on the right side of the machine table.
The device also comprises a controller, wherein the controller is electrically connected with a main hydraulic motor, a first hydraulic motor, a second hydraulic motor, a third hydraulic motor, a hydraulic sliding table, a pushing oil cylinder, a polishing oil cylinder, a clamping oil cylinder, a blanking oil cylinder, a horizontal oil cylinder and a vertical oil cylinder through signal wires, and the main hydraulic motor, the first hydraulic motor, the second hydraulic motor and the third hydraulic motor are all self-locking hydraulic motors.
A method for CNC milling a carbon ceramic brake disc, comprising the following steps:
s1, feeding a first blank, wherein the specific operation steps are as follows:
S11, controlling a moving table of a hydraulic sliding table of the automatic feeding mechanism to move rightwards, driving a fixed seat to move rightwards by the moving table, driving a pushing oil cylinder and a supporting rod to synchronously move rightwards by the fixed seat, driving each blank on the supporting rod to synchronously move rightwards by the supporting rod, and controlling the hydraulic sliding table to be closed by a controller when the blank at the rearmost side on the supporting rod approaches to a positioning hole in the direction of a positioning hole of a disc of the automatic tooling mechanism;
S12, controlling a piston rod of a pushing oil cylinder to extend rightwards, driving an annular pushing plate to move rightwards by the piston rod, pushing each blank on a supporting rod rightwards by the annular pushing plate along the supporting rod, and controlling the pushing oil cylinder to be closed by a controller when the rightmost blank enters a positioning hole of a disc;
s13, controlling a piston rod of a clamping cylinder of the automatic tooling mechanism to extend downwards, driving the chuck to move downwards by the piston rod, enabling an arc-shaped groove of the chuck to move towards the outer cylindrical surface direction of the blank, and after the piston rod extends completely, enabling the blank in the positioning hole to be just clamped and fixed between the chuck and the bottom wall of the positioning hole;
s14, controlling a movable table of a hydraulic sliding table of the automatic feeding mechanism to move leftwards, driving a fixed seat to move leftwards by the movable table, and driving a pushing oil cylinder and a supporting rod to synchronously move leftwards by the fixed seat so as to enable other blanks on the supporting rod to be far away from the blank fixed in the positioning hole, thereby finally completing the feeding of the first blank;
S2, turnover of a first blank: the method comprises the steps that a main hydraulic motor of a turnover mechanism is controlled to start, an output shaft of the main hydraulic motor drives a platform to rotate, the platform drives an automatic tool mechanism and an automatic polishing mechanism to synchronously rotate on a horizontal plane, the automatic tool mechanism drives a blank fixed in a positioning hole to synchronously rotate, and when the blank rotates 180 degrees on the horizontal plane, the controller controls the main hydraulic motor to be closed, so that turnover of a first blank is realized, and at the moment, the first blank enters a milling station of the automatic milling mechanism;
S3, milling a first arc-shaped sinking groove on the inner wall of the mounting hole of the blank, wherein the specific operation steps are as follows:
S31, controlling a piston rod of a horizontal oil cylinder of the automatic milling mechanism to extend leftwards, driving an L plate to move leftwards by the piston rod, driving a vertical oil cylinder to move leftwards by the L plate, driving a sliding block, a third hydraulic motor and a milling cutter to synchronously move leftwards by the vertical oil cylinder, and enabling the milling cutter to move towards a mounting hole of a blank;
S32, controlling a third hydraulic motor to start, enabling the third hydraulic motor to drive a milling cutter to rotate, then controlling a piston rod of a vertical oil cylinder to extend upwards, enabling a piston rod to drive a sliding block to move upwards, enabling the sliding block to drive the third hydraulic motor and the milling cutter to move upwards synchronously, enabling the milling cutter in a rotating state to move towards the inner wall direction of a mounting hole, enabling the milling cutter to mill the top wall of the mounting hole, and milling a first arc-shaped sinking groove on the top wall of the mounting hole of a blank after the piston rod of the vertical oil cylinder extends completely;
s33, after the first arc-shaped sinking groove is machined, controlling a piston rod of the vertical oil cylinder to retract downwards, driving a sliding block to move downwards by the piston rod, and driving a third hydraulic motor and a milling cutter to move downwards by the sliding block so as to enable the milling cutter to retract into a mounting hole of a blank again;
S4, controlling a second hydraulic motor of the automatic tooling mechanism to start, enabling an output shaft of the second hydraulic motor to drive a driving gear to rotate, enabling a driven gear to drive a driven gear to rotate, enabling the driven gear to drive a hollow shaft to rotate, enabling the hollow shaft to drive a disc to synchronously rotate, enabling the disc to drive a blank to synchronously rotate, and controlling the second hydraulic motor to be closed when the blank rotates to the next milling station; the worker repeats the operations of the steps S32-S33, so that a second arc-shaped sinking groove is milled on the top wall of the blank mounting hole;
s5, repeating the operation of the step S4 for a plurality of times, namely milling a plurality of arc-shaped sinking grooves on the inner wall of the mounting hole of the blank, so as to produce a semi-finished product of the carbon ceramic brake disc;
S6, polishing burrs on the outer edges of all arc-shaped sinking grooves of the semi-finished carbon ceramic brake disc, wherein the specific operation steps are as follows:
S61, controlling an output shaft of the first hydraulic motor to rotate anticlockwise, driving a rotating shaft to synchronously rotate anticlockwise, driving a rotating seat to synchronously rotate anticlockwise by the rotating shaft, and driving a semi-finished carbon ceramic brake disc to synchronously rotate anticlockwise by the rotating seat, wherein when the semi-finished carbon ceramic brake disc rotates 90 degrees on a vertical plane, the controller controls the first hydraulic motor to be turned off, and at the moment, the semi-finished carbon ceramic brake disc just enters a polishing station of an automatic polishing mechanism, namely, the semi-finished carbon ceramic brake disc is just under a millstone;
S62, controlling a polishing motor of an automatic polishing mechanism to start, enabling the polishing motor to drive a polishing disc to rotate, then controlling a piston rod of a polishing oil cylinder to extend downwards, enabling the polishing motor and the polishing disc to move downwards simultaneously, enabling the polishing disc in a rotating state to polish burrs on the outer edges of all arc-shaped sinking grooves of the semi-finished carbon ceramic brake disc simultaneously after the bottom surface of the polishing disc is contacted with the top surface of the semi-finished carbon ceramic brake disc, and producing a first carbon ceramic brake disc after polishing for a period of time;
s7, the produced carbon ceramic brake disc is circumferentially transferred to a quality inspection process of a rear section, and the concrete operation steps are as follows:
s71, controlling a polishing motor of the automatic polishing mechanism to be closed, and then controlling a piston rod of a polishing oil cylinder to retract upwards, wherein the piston rod drives a millstone to move upwards so as to reset the millstone;
S72, controlling an output shaft of the first hydraulic motor to rotate clockwise, driving a rotating shaft to synchronously rotate clockwise, driving a rotating seat to rotate clockwise by the rotating shaft, driving a carbon ceramic brake disc to synchronously rotate clockwise by the rotating seat, and controlling the first hydraulic motor to be closed by a controller after the carbon ceramic brake disc rotates 180 degrees on a vertical plane, wherein the carbon ceramic brake disc is located right above a roller conveyor at the moment;
S73, controlling a piston rod of a clamping oil cylinder on the disc to retract, and enabling the piston rod to drive the chuck to move in the direction away from the carbon ceramic brake disc, wherein the carbon ceramic brake disc is not fixed in the positioning hole any more; then a piston rod of the blanking oil cylinder is controlled to extend downwards, the piston rod drives the blanking block to move downwards, the blanking block downwards presses the carbon ceramic brake disc, the carbon ceramic brake disc is ejected out of the positioning hole and falls onto a roller of the roller conveyor, and the roller conveys the carbon ceramic brake disc to the right to a quality inspection process of a rear section;
S8, repeating the operations of the steps S1-S7 by workers, namely, continuously utilizing a plurality of blanks on the supporting rod to correspondingly produce a plurality of carbon ceramic brake discs, and turning the produced carbon ceramic brake discs to a quality inspection process of a rear section.
The invention has the following advantages: the production time of a single carbon ceramic brake disc is shortened, the production efficiency of the carbon ceramic brake disc is greatly improved, and the processing quality of the carbon ceramic brake disc is improved.
Drawings
FIG. 1 is a schematic diagram of a carbon ceramic brake disc;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of the structure of a blank;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a schematic view of a blank tooling secured to a tooling table by a platen;
FIG. 7 is a schematic view of the milling cutter down into the mounting hole of the blank;
FIG. 8 is a schematic view of a milling cutter milling a first arcuate countersink in a blank;
FIG. 9 is a schematic diagram of the structure of the present invention;
FIG. 10 is a schematic structural view of an automatic tooling mechanism of the present invention;
FIG. 11 is an isometric view of FIG. 10;
FIG. 12 is a schematic view of the chuck;
FIG. 13 is an isometric view of FIG. 12;
FIG. 14 is a schematic illustration of the connection of a hollow shaft to a disk;
FIG. 15 is a schematic view of an automatic feeding mechanism;
FIG. 16 is a schematic view of the structure of the automatic grinding mechanism;
FIG. 17 is a schematic view of a milling mechanism;
FIG. 18 is a schematic view of the rearmost blank on the support bar approaching the pilot hole;
FIG. 19 is an enlarged partial view of the portion I of FIG. 18;
FIG. 20 is a schematic view of the rightmost blank entering into the locating hole of the disc;
FIG. 21 is an enlarged partial view of section II of FIG. 20;
FIG. 22 is a schematic view of a blank being clamped between the collet and the bottom wall of the pilot hole;
FIG. 23 is an enlarged partial view of the portion III of FIG. 22;
FIG. 24 is a schematic illustration of the completion of the first blank loading;
Fig. 25 is a schematic view of a blank entering a milling station of an automatic milling mechanism;
FIG. 26 is a schematic view of a milling cutter extending into a mounting hole of a blank;
FIG. 27 is a schematic illustration of a first arcuate countersink milled into the top wall of the mounting hole of the blank;
fig. 28 is an enlarged partial view of the IV portion of fig. 27;
FIG. 29 is a schematic view of a blank milled with a first arcuate countersink;
FIG. 30 is a right side view of FIG. 29;
FIG. 31 is a schematic view of the milling cutter being re-set into the mounting hole of the blank;
FIG. 32 is a schematic diagram of a semi-finished carbon ceramic brake disk being produced;
FIG. 33 is a schematic view of a semi-finished carbon ceramic brake disc directly beneath a grinding disc;
FIG. 34 is a schematic view of a grinding disc for grinding burrs on a semi-finished carbon ceramic brake disc;
FIG. 35 is a schematic view of the movement of the finished carbon ceramic brake disks directly above the roller conveyor;
FIG. 36 is a schematic view of a finished carbon ceramic brake disc falling onto a drum of a drum conveyor;
FIG. 37 is an enlarged view of the portion V of FIG. 36;
In the figure: the novel brake disc comprises a 1-carbon ceramic brake disc, a 2-carbon ceramic brake disc body, a 3-mounting hole, a 4-arc sinking groove, a 5-blank, a 6-tool table, a 7-pressing plate and an 8-milling cutter;
9-backing plates, 10-turnover mechanisms, 11-automatic feeding mechanisms, 12-milling mechanisms, 13-main hydraulic motors, 14-platforms, 15-automatic tooling mechanisms and 16-automatic polishing mechanisms;
17-first hydraulic motors, 18-rotating shafts, 19-rotating seats, 20-hollow shafts, 21-discs, 22-positioning holes, 23-clamping cylinders, 24-chucks, 25-arc-shaped grooves, 26-supports, 27-polishing cylinders, 28-polishing motors and 29-millstones;
30-hydraulic slipways, 31-fixed seats, 32-supporting rods, 33-pushing oil cylinders, 34-annular pushing plates, 35-blanking oil cylinders, 36-blanking blocks, 37-second hydraulic motors and 38-driven gears;
39-horizontal oil cylinders, 40-L plates, 41-vertical oil cylinders, 42-sliding blocks, 43-third hydraulic motors, 44-roller conveyors and 45-semi-finished carbon ceramic brake discs.
Detailed Description
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
as shown in fig. 9-17, the device for CNC milling the carbon ceramic brake disc comprises a turnover mechanism 10 fixedly arranged on a base plate 9, an automatic feeding mechanism 11 arranged on the left side of the turnover mechanism 10 and a milling mechanism 12 arranged on the right side of the turnover mechanism 10, wherein the turnover mechanism 10 comprises a main hydraulic motor 13 fixedly arranged on the base plate 9 and a platform 14 fixedly arranged on an output shaft of the main hydraulic motor 13, an automatic tooling mechanism 15 for fixing a blank 5 and an automatic polishing mechanism 16 for polishing burrs are arranged on the platform 14, and the automatic polishing mechanism 16 is positioned on the right side of the automatic tooling mechanism 15. A roller conveyor 44 fixedly arranged on the backing plate 9 is arranged below the platform 14, and the roller conveyor 44 extends rightward on the right side of the machine.
The automatic tooling mechanism 15 comprises a first hydraulic motor 17 fixedly arranged on the platform 14, a rotating shaft 18 fixedly arranged on an output shaft of the first hydraulic motor 17 and a rotating seat 19 fixedly arranged on the rotating shaft 18, a horizontally arranged hollow shaft 20 is rotatably arranged in the rotating seat 19, and the hollow shaft 20 is arranged through the rotating seat 19; the left end part of the hollow shaft 20 is fixedly provided with a disc 21 integrally formed with the hollow shaft 20, the left end surface of the disc 21 is provided with a positioning hole 22 communicated with the inner hole of the hollow shaft 20, the diameter of the positioning hole 22 is equal to the outer diameter of the blank 5, the depth of the positioning hole 22 is equal to the thickness of the blank 5, the top wall of the positioning hole 22 is provided with a radial hole, the top end opening of the radial hole is provided with a clamping cylinder 23 fixedly arranged on the top wall of the disc 21, a piston rod of the clamping cylinder 23 extends into the radial hole, the extending end is fixedly provided with a chuck 24 in sliding fit with the radial hole, and the bottom surface of the chuck 24 is provided with an arc groove 25; the right end part of the hollow shaft 20 is connected with a driving mechanism for driving the hollow shaft 20 to rotate, the driving mechanism comprises a second hydraulic motor 37 fixedly arranged on the top surface of the rotating seat 19, a driving gear fixedly arranged on an output shaft of the second hydraulic motor 37, and a driven gear 38 fixedly arranged on the right end part of the hollow shaft 20, and the driven gear 38 is meshed with the driving gear; the bottom of the positioning hole 22 and the upper and lower ends of the positioning hole are provided with horizontal holes, the two horizontal holes penetrate right through the right end face of the disc 21, the right end ports of the two horizontal holes are fixedly provided with blanking cylinders 35, and the piston rods of the two blanking cylinders 35 are fixedly provided with blanking blocks 36 which are slidably arranged in the horizontal holes.
The automatic polishing mechanism 16 comprises a bracket 26 fixedly arranged on the platform 14 and a polishing oil cylinder 27 fixedly arranged on the top surface of the bracket 26, a piston rod of the polishing oil cylinder 27 downwards penetrates through the top wall of the bracket 26, a polishing motor 28 is fixedly arranged on the extending end, and a polishing disc 29 is connected to an output shaft of the polishing motor 28; the grinding cylinder 27, the grinding motor 28 and the grinding disc 29 of the automatic grinding mechanism 16 are coaxially arranged.
The automatic feeding mechanism 11 comprises a hydraulic sliding table 30 fixedly arranged on the base plate 9, a fixed seat 31 fixedly arranged on the top surface of a movable table of the hydraulic sliding table 30, a supporting rod 32 fixedly arranged on the right end face of the fixed seat 31, the diameter of the supporting rod 32 is equal to that of the mounting hole 3 of the blank 5, a pushing oil cylinder 33 fixedly arranged on the left end face of the fixed seat 31, a piston rod of the pushing oil cylinder 33 penetrates through the fixed seat 31, an annular pushing plate 34 is fixedly arranged on the extending end, and the annular pushing plate 34 is sleeved on the supporting rod 32; the supporting rod 32 is sleeved with a plurality of blanks 5 which are sequentially arranged along the length direction, the leftmost blank 5 leans against the right end face of the annular pushing plate 34, and the right end face of the rightmost blank 5 is flush with the right end face of the supporting rod 32. The automatic feeding mechanism 11 comprises two pushing oil cylinders 33, and piston rods of the two pushing oil cylinders 33 are respectively fixedly arranged at the upper end and the lower end of the annular push plate 34.
The milling mechanism 12 comprises a machine table fixedly arranged on the base plate 9, a horizontal oil cylinder 39 fixedly arranged on the machine table, an L plate 40 fixedly arranged on the acting end of a piston rod of the horizontal oil cylinder 39, a vertical oil cylinder 41 fixedly arranged on the horizontal plate of the L plate 40, a sliding block 42 fixedly arranged on a vertical plate of the L plate 40 in a sliding manner on the acting end of the piston rod of the vertical oil cylinder 41, a third hydraulic motor 43 fixedly arranged on the left end surface of the sliding block 42, the output shaft of the third hydraulic motor 43 arranged towards the left, and a milling cutter 8 connected to the output shaft; the vertical plate of the L plate 40 is fixedly provided with a guide rail, and the slider 42 is slidably mounted on the guide rail.
The device also comprises a controller, wherein the controller is electrically connected with the main hydraulic motor 13, the first hydraulic motor 17, the second hydraulic motor 37, the third hydraulic motor 43, the hydraulic slipway 30, the pushing cylinder 33, the polishing cylinder 27, the clamping cylinder 23, the blanking cylinder 35, the horizontal cylinder 39 and the vertical cylinder 41 through signal wires, the main hydraulic motor 13, the first hydraulic motor 17, the second hydraulic motor 37 and the third hydraulic motor 43 are all self-locking hydraulic motors, and the output shafts of the main hydraulic motor 13, the first hydraulic motor 17, the second hydraulic motor 37 and the third hydraulic motor 43 can be controlled to do forward rotation or reverse rotation through the controller, so that the extension or retraction of piston rods of the pushing cylinder 33, the clamping cylinder 23, the blanking cylinder 35, the horizontal cylinder 39 and the vertical cylinder 41 can be controlled, and meanwhile, the moving table of the hydraulic slipway 30 can be controlled to move rightwards or leftwards, so that the device has the characteristic of higher degree of automation.
A method for CNC milling a carbon ceramic brake disc, comprising the following steps:
S1, feeding a first blank 5, wherein the specific operation steps are as follows:
S11, controlling a moving table of a hydraulic sliding table 30 of an automatic feeding mechanism 11 to move rightwards, driving a fixed seat 31 to move rightwards by the moving table, driving a pushing oil cylinder 33 and a supporting rod 32 to synchronously move rightwards by the fixed seat 31, driving each blank 5 on the fixed seat 32 to synchronously move rightwards by the supporting rod 32, and enabling the blank 5 to move towards a positioning hole 22 of a disc 21 of the automatic tooling mechanism 15, and controlling the hydraulic sliding table 30 to be closed by a controller when the blank 5 at the rearmost side on the supporting rod 32 is close to the positioning hole 22 as shown in fig. 18-19, wherein the structure of the blank 5 is shown in fig. 4-5;
S12, controlling a piston rod of a pushing oil cylinder 33 to extend rightwards, driving an annular pushing plate 34 to move rightwards by the piston rod, pushing each blank 5 on a supporting rod 32 by the annular pushing plate 34 to move rightwards along the supporting rod 32, and controlling the pushing oil cylinder 33 to be closed by a controller when the rightmost blank 5 enters a positioning hole 22 of a disc 21 as shown in fig. 20-21;
s13, controlling a piston rod of a clamping cylinder 23 of the automatic tooling mechanism 15 to extend downwards, driving a chuck 24 to move downwards by the piston rod, enabling an arc-shaped groove 25 of the chuck 24 to move towards the outer column surface direction of the blank 5, and after the piston rod extends completely, enabling the blank 5 positioned in the positioning hole 22 to be just clamped and fixed between the chuck 24 and the bottom wall of the positioning hole 22, as shown in fig. 22-23;
S14, controlling a movable table of a hydraulic sliding table 30 of the automatic feeding mechanism 11 to move leftwards, driving a fixed seat 31 to move leftwards by the movable table, and driving a pushing oil cylinder 33 and a supporting rod 32 by the fixed seat 31 to synchronously move leftwards so as to enable the rest blanks 5 on the supporting rod 32 to be far away from the blanks 5 fixed in the positioning holes 22, thereby finally completing the feeding of the first blank 5, as shown in FIG. 24;
S2, turnover of a first blank 5: the main hydraulic motor 13 of the turnover mechanism 10 is controlled to start, an output shaft of the main hydraulic motor 13 drives the platform 14 to rotate, the platform 14 drives the automatic tool mechanism 15 and the automatic polishing mechanism 16 on the platform to synchronously rotate on a horizontal plane, the automatic tool mechanism 15 drives the blank 5 fixed in the positioning hole 22 to synchronously rotate, when the blank 5 rotates 180 degrees on the horizontal plane, the controller controls the main hydraulic motor 13 to be closed, so that turnover of the first blank 5 is realized, and at the moment, the first blank 5 enters a milling station of the automatic milling mechanism 12, as shown in fig. 25;
S3, milling a first arc-shaped sinking groove 4 on the inner wall of the mounting hole 3 of the blank 5, wherein the specific operation steps are as follows:
S31, controlling a piston rod of a horizontal oil cylinder 39 of the automatic milling mechanism 12 to extend leftwards, driving an L plate 40 to move leftwards by the piston rod, driving a vertical oil cylinder 41 to move leftwards by the L plate 40, driving a sliding block 42, a third hydraulic motor 43 and a milling cutter 8 to synchronously move leftwards by the vertical oil cylinder 41, and enabling the milling cutter 8 to move towards the mounting hole 3 of the blank 5, wherein when the piston rod of the horizontal oil cylinder 39 extends completely, the milling cutter 8 just extends into the mounting hole 3 of the blank 5, as shown in FIG. 26;
S32, controlling a third hydraulic motor 43 to start, enabling the third hydraulic motor 43 to drive a milling cutter 8 to rotate, then controlling a piston rod of a vertical oil cylinder 41 to extend upwards, enabling the piston rod to drive a sliding block 42 to move upwards, enabling the sliding block 42 to drive the third hydraulic motor 43 and the milling cutter 8 to synchronously move upwards, enabling the milling cutter 8 in a rotating state to move towards the inner wall of the mounting hole 3, milling the top wall of the mounting hole 3 by the milling cutter 8, and milling a first arc-shaped sink 4 on the top wall of the mounting hole 3 of the blank 5 after the piston rod of the vertical oil cylinder 41 extends completely, as shown in fig. 27-30;
S33, after the first arc-shaped sinking groove 4 is machined, controlling a piston rod of the vertical oil cylinder 41 to retract downwards, driving the sliding block 42 to move downwards by the piston rod, and driving the third hydraulic motor 43 and the milling cutter 8 to move downwards by the sliding block 42 so as to enable the milling cutter 8 to retract into the mounting hole 3 of the blank 5 again, as shown in FIG. 31;
In the step S3, when the milling cutter 8 radially mills the inner wall of the mounting hole 3 of the blank 5, since the outer diameter of the blank 5 is equal to the diameter of the positioning hole 22, the inner wall of the positioning hole 22 always protects the outer edge of the blank 5, and the inner wall of the positioning hole 22 counteracts the milling force generated in the milling process, so that the outer edge deformation of the blank 5 is effectively avoided, and the outer diameter of the carbon ceramic brake disc 1 is ensured to meet the design requirement, therefore, compared with the production method shown in fig. 6-8, the device greatly improves the processing quality of the carbon ceramic brake disc 1.
S4, a second hydraulic motor 37 of the automatic tooling mechanism 15 is controlled to start, an output shaft of the second hydraulic motor 37 drives a driving gear to rotate, the driving gear drives a driven gear 38 to rotate, the driven gear 38 drives a hollow shaft 20 to rotate, the hollow shaft 20 drives a disc 21 to synchronously rotate, the disc 21 drives a blank 5 to synchronously rotate, and when the blank 5 rotates to the next milling station, the controller controls the second hydraulic motor 37 to be closed; the worker repeats the operations of the steps S32-S33, so that a second arc-shaped sinking groove 4 is milled on the top wall of the mounting hole 3 of the blank 5;
S5, repeating the operation of the step S4 for a plurality of times, namely milling a plurality of arc-shaped sinking grooves 4 on the inner wall of the mounting hole 3 of the blank 5, so as to produce a semi-finished carbon ceramic brake disc 45, as shown in FIG. 32;
s6, polishing burrs on the outer edges of the arc-shaped sinking grooves 4 of the semi-finished carbon ceramic brake disc 45, wherein the specific operation steps are as follows:
s61, controlling an output shaft of the first hydraulic motor 17 to rotate anticlockwise, driving a rotating shaft 18 to synchronously rotate anticlockwise, driving a rotating seat 19 to rotate anticlockwise by the rotating shaft 18, driving a semi-finished carbon ceramic brake disc 45 to synchronously rotate anticlockwise by the rotating seat 19, and controlling the first hydraulic motor 17 to be closed by a controller after the semi-finished carbon ceramic brake disc 45 rotates 90 DEG on a vertical plane, wherein at the moment, the semi-finished carbon ceramic brake disc 45 just enters a polishing station of the automatic polishing mechanism 16, namely, the semi-finished carbon ceramic brake disc 45 is just under a millstone 29, as shown in FIG. 33;
S62, controlling a polishing motor 28 of an automatic polishing mechanism 16 to start, enabling the polishing motor 28 to drive a polishing disc 29 to rotate, then controlling a piston rod of a polishing oil cylinder 27 to extend downwards, enabling the polishing motor 28 and the polishing disc 29 to simultaneously move downwards by the piston rod, enabling the polishing disc 29 in a rotating state to polish burrs on the outer edges of all arc-shaped sinking grooves 4 of the semi-finished carbon ceramic brake disc 45 simultaneously after the bottom surface of the polishing disc 29 is contacted with the top surface of the semi-finished carbon ceramic brake disc 45, and after polishing for a period of time, producing a first carbon ceramic brake disc 1, wherein the structures of the carbon ceramic brake disc 1 are shown in figures 1-3;
in the steps S3-S6, the device controls the output shaft of the first hydraulic motor 17 to rotate anticlockwise, so that the produced semi-finished carbon ceramic brake disc 45 rotates anticlockwise to a polishing station of the automatic polishing mechanism 16; the burrs on the outer edges of the arc-shaped sinking grooves 4 of the semi-finished carbon ceramic brake disc 45 are then polished off by the grinding disc 29 of the automatic polishing mechanism 16, so that the finished carbon ceramic brake disc 1 is finally produced. Therefore, the device realizes on-line burr polishing, compared with a production method in a workshop, the semi-finished carbon ceramic brake disc 45 is not required to be manually transferred into a grinding machine for polishing, so that the production time of a single carbon ceramic brake disc 1 is saved, and the production efficiency of the carbon ceramic brake disc 1 is greatly improved.
S7, turning the produced carbon ceramic brake disc 1 to a quality inspection process of a rear section, wherein the specific operation steps are as follows:
s71, controlling a polishing motor 28 of the automatic polishing mechanism 16 to be closed, and then controlling a piston rod of a polishing oil cylinder 27 to retract upwards, wherein the piston rod drives a grinding disc 29 to move upwards so as to reset the grinding disc 29;
S72, controlling an output shaft of the first hydraulic motor 17 to rotate clockwise, driving a rotating shaft 18 to synchronously rotate clockwise, driving a rotating seat 19 to rotate clockwise by the rotating shaft 18, driving a carbon ceramic brake disc 1 to synchronously rotate clockwise by the rotating seat 19, driving the carbon ceramic brake disc 1 to synchronously rotate clockwise by the rotating seat 19, and controlling the first hydraulic motor 17 to be closed by a controller after the carbon ceramic brake disc 1 rotates 180 DEG on a vertical plane, wherein the carbon ceramic brake disc 1 is positioned right above a roller conveyor 44 at the moment, as shown in fig. 35;
S73, controlling a piston rod of a clamping cylinder 23 on the disc 21 to retract, and enabling the piston rod to drive the chuck 24 to move in a direction away from the carbon ceramic brake disc 1, wherein the carbon ceramic brake disc 1 is not fixed in the positioning hole 22 any more; then, a piston rod of the blanking cylinder 35 is controlled to extend downwards, the piston rod drives the blanking block 36 to move downwards, the blanking block 36 downwards presses the carbon ceramic brake disc 1, the carbon ceramic brake disc 1 is ejected out of the positioning hole 22, the carbon ceramic brake disc 1 falls onto a roller of the roller conveyor 44, and as shown in fig. 36-37, the roller conveys the carbon ceramic brake disc 1 to the right to a quality inspection process of a rear section;
S8, the worker repeats the operations of the steps S1-S7, so that a plurality of blanks 5 on the support rods 32 can be used for producing a plurality of carbon ceramic brake discs 1 correspondingly, and the produced carbon ceramic brake discs 1 are transferred to a quality inspection process of the rear stage.
According to the step S1, the automatic feeding mechanism 11 and the automatic tooling mechanism 15 are matched, so that the automatic tooling for fixing the blank 5 on the support rod 32 in the positioning hole 22 is realized, the blank 5 is not required to be manually taken out of the charging basket one by one, and the blank 5 is not required to be manually fixed by the tooling. Therefore, compared with the production method shown in fig. 6-8, the device greatly shortens the production time of the single-piece carbon ceramic brake disc 1, and further greatly improves the production efficiency of the carbon ceramic brake disc 1. In addition, in step S7, the apparatus rotates the rotary seat 19 by 180 ° through the first hydraulic motor 17, then controls the piston rod of the clamping cylinder 23 to retract to separate the chuck 24 from the carborundum brake disc 1, and finally controls the extension of the piston rod of the blanking cylinder 35 to withdraw the carborundum brake disc 1 in the positioning hole 22, and the withdrawn carborundum brake disc 1 is directly conveyed to the quality inspection process of the subsequent stage along with the roller conveyor 44. Therefore, the device does not need a quality inspection procedure of manually turning the produced carbon ceramic brake disc 1 to the rear section, further shortens the production time of a single carbon ceramic brake disc 1, and further improves the production efficiency of the carbon ceramic brake disc 1.
Claims (8)
1. The utility model provides a CNC mills device of processing carbon pottery brake disc which characterized in that: the automatic milling machine comprises a turnover mechanism (10) fixedly arranged on a base plate (9), an automatic feeding mechanism (11) arranged on the left side of the turnover mechanism (10) and a milling mechanism (12) arranged on the right side of the turnover mechanism (10), wherein the turnover mechanism (10) comprises a main hydraulic motor (13) fixedly arranged on the base plate (9) and a platform (14) fixedly arranged on an output shaft of the main hydraulic motor (13), an automatic tool mechanism (15) for fixing a blank (5) by a tool and an automatic milling mechanism (16) for milling burrs are arranged on the platform (14), and the automatic milling mechanism (16) is positioned on the right side of the automatic tool mechanism (15);
The automatic tooling mechanism (15) comprises a first hydraulic motor (17) fixedly arranged on the platform (14), a rotating shaft (18) fixedly arranged on an output shaft of the first hydraulic motor (17) and a rotating seat (19) fixedly arranged on the rotating shaft (18), a horizontally arranged hollow shaft (20) is rotatably arranged in the rotating seat (19), and the hollow shaft (20) penetrates through the rotating seat (19); the left end part of the hollow shaft (20) is fixedly provided with a disc (21) integrally formed with the disc, the left end surface of the disc (21) is provided with a positioning hole (22) communicated with the inner hole of the hollow shaft (20), the diameter of the positioning hole (22) is equal to the outer diameter of the blank (5), the depth of the positioning hole (22) is equal to the thickness of the blank (5), the top wall of the positioning hole (22) is provided with a radial hole, the top end opening of the radial hole is provided with a clamping cylinder (23) fixedly arranged on the top wall of the disc (21), a piston rod of the clamping cylinder (23) extends into the radial hole, the extending end is fixedly provided with a chuck (24) which is in sliding fit with the radial hole, and the bottom surface of the chuck (24) is provided with an arc groove (25); the right end part of the hollow shaft (20) is connected with a driving mechanism for driving the hollow shaft to rotate;
The automatic polishing mechanism (16) comprises a support (26) fixedly arranged on the platform (14), a polishing oil cylinder (27) fixedly arranged on the top surface of the support (26), a piston rod of the polishing oil cylinder (27) downwards penetrates through the top wall of the support (26), a polishing motor (28) is fixedly arranged on the extending end, and a polishing disc (29) is connected to an output shaft of the polishing motor (28);
The automatic feeding mechanism (11) comprises a hydraulic sliding table (30) fixedly arranged on the base plate (9), a fixed seat (31) fixedly arranged on the top surface of a movable table of the hydraulic sliding table (30), a supporting rod (32) is fixedly arranged on the right end face of the fixed seat (31), the diameter of the supporting rod (32) is equal to the diameter of a mounting hole (3) of a blank (5), a pushing oil cylinder (33) is fixedly arranged on the left end face of the fixed seat (31), a piston rod of the pushing oil cylinder (33) penetrates through the fixed seat (31), an annular pushing plate (34) is fixedly arranged on the extending end, and the annular pushing plate (34) is sleeved on the supporting rod (32); a plurality of blanks (5) which are sequentially arranged are sleeved on the support rod (32) along the length direction of the support rod, the leftmost blank (5) leans against the right end face of the annular push plate (34), and the right end face of the rightmost blank (5) is flush with the right end face of the support rod (32);
The milling mechanism (12) comprises a machine table fixedly arranged on the base plate (9), a horizontal oil cylinder (39) fixedly arranged on the machine table, an L plate (40) fixedly arranged on the acting end of a piston rod of the horizontal oil cylinder (39), a vertical oil cylinder (41) is fixedly arranged on the horizontal plate of the L plate (40), a sliding block (42) which is slidably arranged on the vertical plate of the L plate (40) is fixedly arranged on the acting end of the piston rod of the vertical oil cylinder (41), a third hydraulic motor (43) is fixedly arranged on the left end face of the sliding block (42), the output shaft of the third hydraulic motor (43) is arranged leftwards, and the output shaft is connected with a milling cutter (8); the vertical plate of the L plate (40) is fixedly provided with a guide rail, and the sliding block (42) is slidably arranged on the guide rail.
2. The device for CNC milling a carbon ceramic brake disc according to claim 1, wherein: the bottom of the positioning hole (22) and the upper end and the lower end of the positioning hole are respectively provided with a horizontal hole, the two horizontal holes penetrate right through the right end face of the disc (21), the right end ports of the two horizontal holes are respectively fixedly provided with a discharging oil cylinder (35), and the piston rods of the two discharging oil cylinders (35) are respectively fixedly provided with a discharging block (36) which is slidably arranged in the horizontal holes.
3. The device for CNC milling a carbon ceramic brake disc according to claim 2, wherein: the driving mechanism comprises a second hydraulic motor (37) fixedly arranged on the top surface of the rotating seat (19), a driving gear fixedly arranged on an output shaft of the second hydraulic motor (37) and a driven gear (38) fixedly arranged on the right end part of the hollow shaft (20), and the driven gear (38) is meshed with the driving gear.
4. A device for CNC milling a carbon ceramic brake disc according to claim 3, wherein: the polishing oil cylinder (27), the polishing motor (28) and the grinding disc (29) of the automatic polishing mechanism (16) are coaxially arranged.
5. The device for CNC milling a carbon ceramic brake disc according to claim 4, wherein: the automatic feeding mechanism (11) comprises two pushing oil cylinders (33), and piston rods of the two pushing oil cylinders (33) are respectively fixedly arranged at the upper end and the lower end of the annular pushing plate (34).
6. The device for CNC milling a carbon ceramic brake disc according to claim 5, wherein: a roller conveyor (44) fixedly arranged on the base plate (9) is arranged below the platform (14), and the roller conveyor (44) extends rightwards to the right side of the machine table.
7. The device for CNC milling a carbon ceramic brake disc according to claim 6, wherein: the device also comprises a controller, wherein the controller is electrically connected with a main hydraulic motor (13), a first hydraulic motor (17), a second hydraulic motor (37), a third hydraulic motor (43), a hydraulic sliding table (30), a pushing oil cylinder (33), a polishing oil cylinder (27), a clamping oil cylinder (23), a blanking oil cylinder (35), a horizontal oil cylinder (39) and a vertical oil cylinder (41) through signal wires, and the main hydraulic motor (13), the first hydraulic motor (17), the second hydraulic motor (37) and the third hydraulic motor (43) are all self-locking hydraulic motors.
8. A method for CNC milling a carbon ceramic brake disc, using the apparatus for CNC milling a carbon ceramic brake disc according to claim 7, wherein: it comprises the following steps:
S1, feeding a first blank (5), wherein the specific operation steps are as follows:
S11, controlling a moving table of a hydraulic sliding table (30) of an automatic feeding mechanism (11) to move rightwards, driving a fixed seat (31) to move rightwards by the moving table, driving a pushing oil cylinder (33) and a supporting rod (32) to synchronously move rightwards by the fixed seat (31), driving each blank (5) on the fixed seat (31) to synchronously move rightwards by the supporting rod (32), enabling the blank (5) to move towards a positioning hole (22) of a disc (21) of an automatic tooling mechanism (15), and controlling the hydraulic sliding table (30) to be closed by a controller when the blank (5) at the rearmost side on the supporting rod (32) approaches the positioning hole (22);
S12, controlling a piston rod of a pushing oil cylinder (33) to extend rightwards, driving an annular push plate (34) to move rightwards by the piston rod, pushing each blank (5) on a support rod (32) by the annular push plate (34) to move rightwards along the support rod (32), and controlling the pushing oil cylinder (33) to be closed by a controller when the rightmost blank (5) enters a positioning hole (22) of a disc (21);
S13, controlling a piston rod of a clamping cylinder (23) of the automatic tooling mechanism (15) to extend downwards, driving a chuck (24) to move downwards by the piston rod, enabling an arc-shaped groove (25) of the chuck (24) to move towards the outer column surface direction of the blank (5), and after the piston rod extends completely, enabling the blank (5) positioned in the positioning hole (22) to be just clamped and fixed between the chuck (24) and the bottom wall of the positioning hole (22);
S14, controlling a movable table of a hydraulic sliding table (30) of an automatic feeding mechanism (11) to move leftwards, driving a fixed seat (31) to move leftwards, and driving a pushing oil cylinder (33) and a supporting rod (32) to synchronously move leftwards by the fixed seat (31) so as to enable other blanks (5) on the supporting rod (32) to be far away from the blanks (5) fixed in a positioning hole (22), thereby finally finishing the feeding of the first blank (5);
S2, turnover of a first blank (5): the method comprises the steps that a main hydraulic motor (13) of a turnover mechanism (10) is controlled to be started, an output shaft of the main hydraulic motor (13) drives a platform (14) to rotate, the platform (14) drives an automatic tool mechanism (15) and an automatic polishing mechanism (16) on the platform to synchronously rotate on a horizontal plane, the automatic tool mechanism (15) drives a blank (5) fixed in a positioning hole (22) to synchronously rotate, and when the blank (5) rotates 180 degrees on the horizontal plane, the controller controls the main hydraulic motor (13) to be closed, so that turnover of a first blank (5) is achieved, and at the moment, the first blank (5) enters a milling station of an automatic milling mechanism (12);
S3, milling a first arc-shaped sinking groove (4) on the inner wall of the mounting hole (3) of the blank (5), wherein the specific operation steps are as follows:
S31, controlling a piston rod of a horizontal oil cylinder (39) of an automatic milling mechanism (12) to extend leftwards, driving an L plate (40) to move leftwards by the piston rod, driving a vertical oil cylinder (41) to move leftwards by the L plate (40), driving a sliding block (42), a third hydraulic motor (43) and a milling cutter (8) to synchronously move leftwards by the vertical oil cylinder (41), enabling the milling cutter (8) to move towards a mounting hole (3) of a blank (5), and enabling the milling cutter (8) to just extend into the mounting hole (3) of the blank (5) after the piston rod of the horizontal oil cylinder (39) extends completely;
S32, controlling a third hydraulic motor (43) to start, enabling the third hydraulic motor (43) to drive a milling cutter (8) to rotate, then controlling a piston rod of a vertical oil cylinder (41) to extend upwards, enabling a piston rod to drive a sliding block (42) to move upwards, enabling the sliding block (42) to drive the third hydraulic motor (43) and the milling cutter (8) to synchronously move upwards, enabling the milling cutter (8) in a rotating state to move towards the inner wall direction of a mounting hole (3), enabling the milling cutter (8) to mill the top wall of the mounting hole (3), and enabling a first arc-shaped sinking groove (4) to be milled on the top wall of the mounting hole (3) of a blank (5) after the piston rod of the vertical oil cylinder (41) extends completely;
s33, after the first arc-shaped sinking groove (4) is machined, controlling a piston rod of the vertical oil cylinder (41) to retract downwards, driving a sliding block (42) to move downwards by the piston rod, and driving a third hydraulic motor (43) and the milling cutter (8) to move downwards by the sliding block (42) so as to enable the milling cutter (8) to retract into the mounting hole (3) of the blank (5) again;
S4, a second hydraulic motor (37) of the automatic tooling mechanism (15) is controlled to be started, an output shaft of the second hydraulic motor (37) drives a driving gear to rotate, the driving gear drives a driven gear (38) to rotate, the driven gear (38) drives a hollow shaft (20) to rotate, the hollow shaft (20) drives a disc (21) to synchronously rotate, the disc (21) drives a blank (5) to synchronously rotate, and when the blank (5) rotates to a next milling station, the controller controls the second hydraulic motor (37) to be closed; the worker repeats the operations of the steps S32-S33, so that a second arc sinking groove (4) is milled on the top wall of the mounting hole (3) of the blank (5);
S5, repeating the operation of the step S4 for a plurality of times, namely milling a plurality of arc sinking grooves (4) on the inner wall of the mounting hole (3) of the blank (5), so as to produce a semi-finished carbon ceramic brake disc (45);
s6, polishing burrs on the outer edges of all arc-shaped sinking grooves (4) of the semi-finished carbon ceramic brake disc (45), wherein the specific operation steps are as follows:
S61, controlling an output shaft of the first hydraulic motor (17) to rotate anticlockwise, driving a rotating shaft (18) to synchronously rotate anticlockwise, driving a rotating seat (19) to rotate anticlockwise by the rotating shaft (18), driving a semi-finished carbon ceramic brake disc (45) to synchronously rotate anticlockwise by the rotating seat (19), and controlling the first hydraulic motor (17) to be closed by a controller after the semi-finished carbon ceramic brake disc (45) rotates 90 DEG on a vertical plane, wherein the semi-finished carbon ceramic brake disc (45) just enters a polishing station of an automatic polishing mechanism (16) at the moment, namely, the semi-finished carbon ceramic brake disc (45) is just under a millstone (29);
S62, controlling a polishing motor (28) of an automatic polishing mechanism (16) to start, driving a polishing disc (29) to rotate by the polishing motor (28), then controlling a piston rod of a polishing oil cylinder (27) to extend downwards, driving the polishing motor (28) and the polishing disc (29) to move downwards simultaneously, and polishing burrs on the outer edges of all arc-shaped sinking grooves (4) of the semi-finished carbon ceramic brake disc (45) by the polishing disc (29) in a rotating state after the bottom surface of the polishing disc (29) is contacted with the top surface of the semi-finished carbon ceramic brake disc (45), so as to produce a first carbon ceramic brake disc (1) after polishing for a period of time;
S7, performing quality inspection on the rear section of the produced carbon ceramic brake disc (1) Zhou Zhuaidao, wherein the concrete operation steps are as follows:
S71, controlling a polishing motor (28) of the automatic polishing mechanism (16) to be closed, and then controlling a piston rod of a polishing oil cylinder (27) to retract upwards, wherein the piston rod drives a grinding disc (29) to move upwards so as to reset the grinding disc (29);
S72, controlling an output shaft of the first hydraulic motor (17) to rotate clockwise, driving a rotating shaft (18) to synchronously rotate clockwise, driving a rotating seat (19) to rotate clockwise by the rotating shaft (18), driving a carbon ceramic brake disc (1) to synchronously rotate clockwise by the rotating seat (19), driving the carbon ceramic brake disc (1) to synchronously rotate clockwise by the rotating seat (19), and controlling the first hydraulic motor (17) to be closed by a controller after the carbon ceramic brake disc (1) rotates 180 degrees on a vertical plane, wherein the carbon ceramic brake disc (1) is positioned right above a roller conveyor (44);
s73, controlling a piston rod of a clamping oil cylinder (23) on the disc (21) to retract, and driving a chuck (24) to move in a direction away from the carbon ceramic brake disc (1) by the piston rod, wherein the carbon ceramic brake disc (1) is not fixed in a positioning hole (22); then a piston rod of a blanking oil cylinder (35) is controlled to extend downwards, the piston rod drives a blanking block (36) to move downwards, the blanking block (36) downwards presses a carbon ceramic brake disc (1), the carbon ceramic brake disc (1) is ejected out of a positioning hole (22), the carbon ceramic brake disc (1) falls onto a roller of a roller conveyor (44), and the roller conveys the carbon ceramic brake disc (1) rightwards to a quality inspection process of a rear section;
S8, repeating the operations of the steps S1-S7 by workers, namely, a plurality of blanks (5) on the supporting rods (32) can be used for correspondingly producing a plurality of carbon ceramic brake discs (1), and the produced carbon ceramic brake discs (1) are subjected to quality inspection in the rear section of Zhou Zhuaidao.
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