CN108274053B

CN108274053B - Automatic machining process of VVT rotor

Info

Publication number: CN108274053B
Application number: CN201810107983.7A
Authority: CN
Inventors: 林德亮; 黄榆鉴
Original assignee: Sichuan Melted To Pml Precision Mechanism Ltd
Current assignee: Sichuan Melted To Pml Precision Mechanism Ltd
Priority date: 2018-02-02
Filing date: 2018-02-02
Publication date: 2020-03-20
Anticipated expiration: 2038-02-02
Also published as: CN108274053A

Abstract

The invention discloses an automatic processing technology of a VVT rotor, which comprises the following steps: 1) the feeding device conveys the VVT rotor to a robot hand grasping position; 2) the robot grabs a positioning surface of the VVT rotor close to the clamp to prepare clamping; 3) the fixture is blown to clean the positioning surface of the fixture and the VVT rotor; 4) the robot installs the VVT rotor on the positioning surface of the clamp; 5) the robot hand holds and presses the VVT rotor, and the VVT rotor is fixed on the positioning surface through a clamping mechanism on the clamp; 6) the fixture gas detects whether the VVT rotor is installed in place; 7) after confirming that the VVT rotor is installed in place, performing cutter machining on the VVT rotor by adopting a cutter, wherein the cutter is installed on a machine tool; the steps are all completed in a processing center in a centralized way; the fixture comprises a front processing station and a back processing station. The invention solves the problems of low efficiency and high cost caused by the traditional process for processing the VVT rotor, and simultaneously, the invention can quickly and accurately fix the VVT rotor on the clamp.

Description

Automatic machining process of VVT rotor

Technical Field

The invention relates to the technical field of VVT rotor machining, in particular to an automatic machining process of a VVT rotor.

Background

Today, most mechanical parts are processed in a gradual transformation mode at the high speed of the automatic processing technology, but part of precision parts are difficult to realize automatic processing due to the limitation of the processing technology (part of precision sizes are processed on automatic equipment due to the processing technical problem and the batch processing quality cannot be guaranteed), for example, parts with the thickness/length dimensional tolerance within 0.015 are processed by a double-end-face grinding machine in an efficient way at present, the double-end-face grinding machine has the advantages of high processing efficiency, good product quality, single processing content and difficult automation realization; the other processing methods are as follows: the surface grinding machine can not ensure the machining efficiency and the product quality during the turnover machining, and the product quality can not be controlled.

The thickness tolerance of the VVT rotor is 0.013, and the traditional machining process is adopted, so that the preparation period of a single part is long, batch production cannot be realized, the efficiency is low, and the cost is high.

Disclosure of Invention

The invention aims to provide an automatic processing technology of a VVT rotor, which solves the problems of low efficiency and high cost caused by processing the VVT rotor by the traditional technology, and meanwhile, the invention can quickly and accurately fix the VVT rotor on a clamp; and the processing center is used for processing in batches to ensure that the thickness tolerance is 0.013.

The invention is realized by the following technical scheme:

the automatic processing technology of the VVT rotor comprises the following steps:

1) the feeding device conveys the VVT rotor to a robot hand grasping position;

2) the robot grabs a positioning surface of the VVT rotor close to the clamp to prepare clamping;

3) the fixture is blown to clean the positioning surface of the fixture and the VVT rotor;

4) the robot installs the VVT rotor on the positioning surface of the clamp;

5) the robot hand holds and presses the VVT rotor, and the VVT rotor is fixed on the positioning surface through a clamping mechanism on the clamp;

6) the fixture gas detects whether the VVT rotor is installed in place;

7) after confirming that the VVT rotor is installed in place, performing cutter machining on the VVT rotor by adopting a cutter, wherein the cutter is installed on a machine tool;

the steps are all completed in a processing center in a centralized way;

the fixture comprises a front processing station and a back processing station, the back processing station comprises a back clamping mechanism, the back clamping mechanism comprises 3 clamping jaws which are uniformly arranged in the circumferential direction, the bottom ends of the clamping jaws are connected with guide rods, the end parts of the guide rods are connected with a telescopic mechanism, the 3 guide rods are obliquely arranged, the bottom ends of the 3 guide rods are outwards expanded, the end surfaces of the clamping jaws are arranged to be arc-shaped surfaces, the arc-shaped surfaces are just attached to the outer wall of the VVT rotor, one end of at least one clamping jaw, which is in contact with the VVT rotor, is provided with a U-shaped groove, the U-shaped groove is matched with a convex edge arranged on the outer wall of the VVT rotor, the front processing station comprises a front clamping mechanism, the front clamping mechanism comprises a fixed body, the outer diameter of the fixed body is gradually increased from top to bottom, an inner expansion sleeve is sleeved on the outer wall of the fixed body, and the inner, the fixture comprises a front clamping mechanism, a back clamping mechanism, a front clamping mechanism and a clamp, wherein the front clamping mechanism and the back clamping mechanism are matched to be provided with positioning surfaces, the clamp further comprises an air blowing device, and the air blowing device comprises a pipeline and a jet orifice arranged on the pipeline.

The robot of the invention is the prior art; the machining center is in the prior art, the existing machining center is used for the machining process of the VVT rotor, the inner expansion sleeve has certain elasticity, is made of elastic materials and can be plastic or tool steel or the mixture of the plastic and the tool steel; the jet orifice is used for blowing air to the positioning surface and the part (VVT rotor), and then the cleaning of the positioning surface and the part (VVT rotor) is realized; the three guide rods have certain taper, the convex ribs can be just clamped into the U-shaped grooves, when the rotor is installed, the U-shaped grooves and the arc-shaped surfaces on the clamping jaws guide and limit the VVT rotor at the same time, the VVT rotor can be quickly and correspondingly placed between the front clamping mechanisms, and when the rotor is pulled down, the VVT rotor moves downwards and cannot shift, the VVT rotor can be quickly and accurately pulled down onto a positioning surface, the positioning accuracy is improved, and the machining accuracy is improved.

The working principle of the front clamping mechanism of the invention is as follows:

snatch the VVT rotor cover when the robot and establish in the cover that expands after, the robot compresses tightly the VVT rotor, simultaneously, when the cover that expands receives the effect of pulling force down (can realize through hydraulic cylinder), interior cover that expands moves down along the fixed external wall, because the cover that expands down in-process, the external diameter of the fixed body is just big gradually, and then the external diameter increase (the inflation) of the cover that expands in the realization, through the interior chucking that expands of the interior VVT rotor of the pull-down inflation realization of interior cover that expands.

The working principle of the reverse clamping mechanism of the invention is as follows:

when telescopic machanism pulling guide bar downwards, the upper end of 3 guide bars is inwards shrink, and then drives 3 jack catchs and inwards shrinks, and 3 jack catchs are inwards shrunk and are realized pressing from both sides the clamp of VVT rotor outer wall.

According to the invention, all processing steps are integrated in the processing center, and the double-station fixture is adopted, so that the processing steps are reduced, the processing of a plurality of contents is completed at the same time, the processing time and the auxiliary time are greatly shortened, the working efficiency is improved, and the cost is reduced.

Meanwhile, the U-shaped grooves are formed in the clamping jaws, so that the VVT rotor can be quickly and correspondingly placed between the front clamping mechanisms by guiding and limiting the VVT rotor through the U-shaped grooves and the arc-shaped surfaces on the clamping jaws in the rotor installation process, and the VVT rotor does not shift when moving downwards in the rotor pull-down process, so that the VVT rotor can be quickly and accurately pulled downwards onto the positioning surface, the positioning accuracy is improved, and the processing accuracy is further improved.

Further, 3 guide bars are connected through a fixed ring, and the fixed ring is at least provided with 2.

The complete synchronization of 3 guide rods can be realized by the aid of the fixing rings, and the clamping effect of the reverse side clamping mechanism on the VVT rotor is further improved.

Further, positive chucking mechanism still includes a locating piece and a grip block at least, the locating piece sets up to first arcwall face with the one end of VVT rotor contact, be provided with the draw-in groove on the grip block, the draw-in groove cooperates with the protruding stupefied that sets up on the outer wall of VVT rotor.

First arcwall face and the outer wall laminating of VVT rotor play the guide effect to the VVT rotor when fixed with the drop-down, protruding stupefied can block into the draw-in groove in, play limiting displacement when fixed with the drop-down to the VVT rotor.

The invention has the advantages that the positioning block and the clamping block are arranged, so that the VVT rotor can be guided and limited when being fixed and pulled down. Not only can be fast with the correspondence of VVT rotor put into between the positive chucking mechanism, simultaneously by the in-process of drop-down as the rotor, the skew can not take place for the VVT rotor downstream, can be fast accurate drop-down with the VVT rotor to the locating surface on, improve the precision of location, and then improve the precision of processing.

Further, anchor clamps include the bottom plate, be provided with 2 mounting panels on the bottom plate, 2 mounting panels are used for installing positive processing station and reverse side processing station respectively, be provided with the cylinder on the mounting panel, reverse side chucking mechanism and positive chucking mechanism are installed on the cylinder.

Further, positive chucking mechanism includes the fixed slot, the fixed slot inboard is provided with the fixed body, has the determining deviation between the bottom in fixed body and the fixed slot, the open end of fixed slot is provided with the interior cover that expands, the bottom and the extensible member of fixed slot are connected, the cover outer wall that expands in is established to the locating surface cover.

The fixing groove is a structure formed by one end of a cylindrical structure sinking inwards, and the telescopic piece can be a hydraulic oil cylinder.

The reciprocating of fixed slot is realized to flexible through the extensible member, and then drives interior bloated cover and remove along the outer wall of the fixed body (the fixed body is fixed), snatch the VVT rotor cover when the robot and establish in the cover back that expands, the robot compresses tightly the VVT rotor, and simultaneously, the extensible member is flexible downwards and then will be interior bloated cover pull-down, because interior bloated cover pull-down in-process, the external diameter of the fixed body is just big gradually, and then the external diameter increase (the inflation) of the cover that expands in the realization, the interior bloated chucking of VVT rotor in the pull-down inflation realization of cover through interior bloated.

Furthermore, the machining center also comprises an automatic measuring machine, the automatic measuring machine is used for measuring the size of the VVT rotor, transmitting the measured data to the industrial personal computer in real time, and automatically adjusting the cutter compensation of the machine tool through the size change

The automatic measuring machine comprises a sliding table, a measuring position is arranged above the sliding table, a measuring head used for measuring the size of a workpiece is arranged at the measuring position, the measuring head comprises 2 symmetrical displacement sensors, the displacement sensors are in contact with the outer wall of the VVT rotor during measurement, the measurement of the size of the VVT rotor is realized by measuring the distance between the 2 displacement sensors, and the displacement sensors transmit the measured data to the industrial personal computer.

The specific measurement process is as follows: the robot plate workpiece grabs the sliding table of the automatic measuring machine, the sliding table slides to a measuring position, the measuring head stretches out of the size of the measuring workpiece, the measurement is completed, the sliding table returns to the original point, the other end of the sliding table is provided with a standard part, and the measuring equipment is calibrated regularly.

Further, a tool setting gauge and a built-in measuring head are installed on the machine tool.

The tool setting gauge and the built-in measuring head are in the prior art.

The Renysha tool setting gauge and the measuring head in the machine are arranged in the machine tool, so that the equipment can compensate the abrasion of the tool, the thermal deformation of each shaft and the clamping error of parts in time through measurement feedback, and the machining size precision is higher and more stable.

Furthermore, the machine tool is connected with an industrial personal computer, and the industrial personal computer can process the feedback data of the machine tool and control and adjust the parameters of the machine tool; the main shaft of the machine tool is provided with a through cooling and circulating cooling system.

The machine tool spindle is provided with a through cooling function and a circulating cooling function, cutting fluid/cooling fluid passes through the spindle and is sprayed out from the end face of the cutter, heat generated by high-speed rotation of the spindle can be taken away, the spindle is prevented from deforming due to heating to influence precision, meanwhile, the cutting fluid is sprayed out from the middle of the cutter, so that the machining cutter can be cooled more fully, the machining efficiency is higher, and the service life of the cutter is longer.

Furthermore, the main shaft of the machine tool adopts a BBT or HSK interface.

A BBT or HSK interface is selected and matched with a machine tool spindle, and the BBT and HSK spindle interface is characterized by being positioned on two sides, so that the repeated positioning precision in the Z direction is guaranteed by utilizing taper centering and end face fitting, and the positioning precision of repeated tool changing of a face milling cutter is guaranteed when the thickness dimension is machined.

Further, the tool adopts a PCD or CBN high-hardness blade or a PCD and CBN composite forming tool.

The cutters are all CBN or CBN high-hardness blades, so that high linear speed and machining efficiency can be achieved; meanwhile, the bounce of the tool tip is adjusted to be within 0.003 by a tool adjuster, so that the high quality of processing is ensured; the superhard cutter is slowly abraded, the service life can be prolonged, the production line can be ensured not to stop for a long time, the downtime for cutter changing is reduced, and the processing efficiency and the quality level are further improved.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention does not need to carry out thickness finish machining on a separate machine tool, can complete the thickness finish machining together with other machining contents in a machining center and realize automatic batch machining, solves the limitation and waste of single machine tool investment, improves the working efficiency and reduces the cost.

2. The invention realizes closed-loop processing by combining automatic processing and automatic measurement, and ensures that the product quality keeps high stability.

3. The invention integrates processing, tool setting, detection and adjustment, and realizes the mass and stable processing of parts with thickness precision within 0.015 by combining the processing precision of a machine tool and detection compensation in a two-way manner and adopting a high-precision and high-reliability clamp in a processing center.

4. According to the invention, through improving the clamp, not only the front clamping mechanism and the back clamping mechanism are arranged on the same clamp at the same time, but also the front clamping mechanism and the back clamping mechanism are respectively provided with a mechanism for guiding and limiting the VVT rotor in the clamping process, so that the clamping speed and stability of the VVT rotor in the clamping process are improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of a clamp;

fig. 2 is a schematic view of the front clamping mechanism in cooperation with the VVT rotor;

FIG. 3 is a schematic structural view of a front clamping mechanism;

fig. 4 is a schematic view of a reverse clamping mechanism engaged with a VVT rotor;

fig. 5 is a schematic structural view of the reverse-side chucking mechanism.

Reference numbers and corresponding part names in the drawings:

1-VVT rotor, 2-clamp, 21-reverse side clamping mechanism, 22-front side clamping mechanism, 23-positioning surface, 24-bottom plate, 25-mounting plate, 26-cylinder, 27-jet orifice, 28-pipeline, 211-clamping jaw, 212-U-shaped groove, 213-fixing ring, 214-guide rod, 215-telescopic mechanism, 221-telescopic piece, 222-fixing groove, 223-clamping block, 224-internal expansion sleeve, 225-fixing body and 226-positioning block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1 to 5, the VVT rotor automatic processing process includes the following steps:

1) the feeding device conveys the VVT rotor 1 to a robot hand grasping position;

2) the robot grabs the positioning surface 23 of the VVT rotor 1 close to the clamp 2 to prepare clamping;

3) the fixture 2 blows air to clean the positioning surface 23 of the fixture 2 and the VVT rotor 1, specifically, through an automatic control technology, the jet orifice 27 automatically jets air, the jetted air sweeps the positioning surface 23 and the processing surface (upper end surface) of the VVT rotor 1, the positioning surface 23 and the VVT rotor 1 are blown clean, and the influence of impurities such as scrap iron, dust and the like on the positioning precision of parts is avoided;

4) the robot installs the VVT rotor 1 on the positioning surface 23 of the clamp 2, specifically, because the clamp 2 adopts a double-station structure of a front processing station and a back processing station, the VVT rotor 1 for processing is installed on the positioning surface 23 of the front processing station, and the VVT rotor 3 with the front processed is installed on the positioning surface 23 of the back processing station;

5) the robot hand holds and presses the VVT rotor 1, and the VVT rotor 1 is fixed on the positioning surface 23 through the clamping mechanism on the clamp 2;

6) whether the VVT rotor 1 is installed in place or not is detected by the clamp 2, the in-place detection and gas detection functions of a part (the VVT rotor 1) are integrated on the positioning surface 23, a small gas orifice is arranged on the positioning surface 23 and connected with a gas pressure detector, the gas orifice is blocked when the part is completely attached to the positioning surface 23, and the pressure detected by the gas pressure sensor is in a qualified range; if impurities such as scrap iron, dust and the like exist on the positioning surface 23, so that the positioning surface of the part cannot be completely attached, the air leakage of the air injection hole can be caused, the air pressure can be reduced, the pressure detected by the air pressure sensor is unqualified, the alarm can be given, then the robot is controlled to clamp the part again, the positioning point and the positioning surface of the part are automatically cleaned again, and the part is clamped again;

7) after confirming that the VVT rotor 1 is installed in place, performing cutter machining on the VVT rotor 1 by adopting a cutter, wherein the cutter is installed on a machine tool;

after the cutter machining is finished, removing burrs and fins on the surface by using a hairbrush, loosening the clamp 2, grabbing a workpiece by using a manipulator, simultaneously blowing air by using the clamp and blowing air by using the manipulator to clean the surface of the workpiece, putting the machined part into a measuring machine by using the manipulator to measure important dimensions, counting measurement data by using the measuring machine, transmitting the measurement data to an industrial personal computer for processing, and adjusting cutter compensation in real time by using the industrial personal computer according to the offset condition of the machined dimension; (the process is circulated in this way), and the machining of the parts is realized.

The steps are all completed in a centralized manner in a processing center, the processing center has an automatic tool changing function, automatic control is adopted, and analysis and control are carried out through an industrial personal computer;

according to the method, a Japanese brother drilling and tapping center is adopted in the machining center, and a Haidanhain grating ruler is installed on three axes of equipment to form closed-loop equipment, wherein the grating ruler can detect the movement distance of the three axes of the equipment and feed back data to an equipment system, so that the equipment automatically compensates the walking precision, the movement precision and the repeated positioning precision of the equipment are ensured, and the repeated positioning precision of the machining center is +/-0.003.

The clamp 2 is made by adopting a modular design, the repeated positioning precision is reliable, and the repeated positioning precision of the clamp is 0.003. Anchor clamps 2 have the function of drop-down, pull down the product, let the locating surface of part more inseparable laminating on the locating surface, guarantee part clamping, location uniformity, ensure batch production's stability of quality).

The fixture 2 comprises a bottom plate 24, wherein 2 mounting plates 25 are arranged on the bottom plate 24, the 2 mounting plates 25 are respectively used for mounting a front processing station and a back processing station, the front processing station and the back processing station are arranged in a left-right mode, processing of all contents is completed on one piece of equipment, auxiliary time for carrying and clamping is reduced, processing efficiency is higher, equipment utilization rate is higher, a cylinder 26 is arranged on the mounting plate 25, a clamping mechanism is mounted on the cylinder 26, the front processing station and the back processing station are respectively used for processing a positive end and a reverse end (namely two opposite end faces in the axial direction) of the VVT rotor 1, the back processing station comprises a back clamping mechanism 21, the back clamping mechanism 21 comprises 3 clamping jaws 211 uniformly arranged in the circumferential direction, the bottom end of each clamping jaw 211 is connected with a guide rod 214, and the end part of each guide rod 214 is connected with a telescopic mechanism 215, the 3 guide rods 214 are obliquely arranged, the bottom ends of the 3 guide rods 214 are outwards expanded, the end surfaces of the clamping jaws 211 are arc-shaped surfaces, the arc-shaped surfaces are just attached to the outer wall of the VVT rotor 1, a U-shaped groove 212 is formed in one end, contacting with the VVT rotor 1, of one clamping jaw 211, the U-shaped groove 212 is matched with a convex edge formed in the outer wall of the VVT rotor 1, the front processing station comprises a front clamping mechanism 22, the front clamping mechanism 22 comprises a fixing groove 222, a fixing body 225 is arranged on the inner side of the fixing groove 222, a certain distance is formed between the fixing body 225 and the inner bottom of the fixing groove 222, an inner expansion sleeve 224 is arranged at the opening end of the fixing groove 222, the bottom of the fixing groove 222 is connected with a telescopic piece 221, the positioning surface 23 is sleeved on the outer wall of the inner expansion sleeve 224, the outer diameter of the fixing body 225 is gradually increased from top to bottom, and, the inner expansion sleeve 224 can move up and down along the outer wall of the fixing body 225, the positioning surfaces 23 are arranged on the back clamping mechanism 21 and the front clamping mechanism 22 in a matched mode, and the clamp 2 further comprises an air blowing device which comprises a pipeline 28 and a jet orifice 27 arranged on the pipeline 28.

In this embodiment, the processing step of VVT rotor 1 integrates the setting at the processing center, reduces the processing step to accomplish the processing of a plurality of contents simultaneously, process time and assistance time shorten by a wide margin, and machining efficiency improves, automatic realization is comparatively simple, and the operation cost is lower, can obtain higher benefit.

Meanwhile, the fixture is improved, the front clamping mechanism and the back clamping mechanism are arranged on the same fixture at the same time, and the front clamping mechanism and the back clamping mechanism are provided with mechanisms for guiding and limiting the VVT rotor in the clamping process, so that the clamping speed and the stability of the VVT rotor in the clamping process are improved.

Example 2:

as shown in fig. 1 to 5, in the present embodiment, based on

embodiment

1, 3 guide rods 214 are connected by a fixing ring 213, and the number of the fixing ring 213 is set to 2; the front clamping mechanism 22 at least further comprises a positioning block 226 and a clamping block 223, one end of the positioning block 226 contacting with the VVT rotor 1 is set to be a first arc-shaped surface, a clamping groove (not shown) is arranged on the clamping block 223, and the clamping groove is matched with a convex edge arranged on the outer wall of the VVT rotor 1.

Example 3:

as shown in fig. 1 to 5, in this embodiment, based on embodiment 1 or embodiment 2, the machining center further includes an automatic measuring machine, the automatic measuring machine is configured in the production line, and international sensors such as keyence and ISLIVE are adopted to ensure the measurement accuracy; meanwhile, the automatic measuring machine also carries out data interaction with the industrial personal computer through the bus, the important size of the part (VVT rotor 1) is measured in real time, the data is transmitted to the industrial personal computer in real time for analysis, and the industrial personal computer carries out fine adjustment on the equipment in real time by analyzing the size change curve, so that the consistency and the high quality of the processing quality of the product are ensured; the machine tool is provided with a tool setting gauge and an internal measuring head and is connected with an industrial personal computer, and the industrial personal computer can process feedback data of the machine tool and control and adjust parameters of the machine tool; a main shaft of the machine tool is provided with a through cooling and circulating cooling system; the main shaft of the machine tool adopts a BBT or HSK interface; the tool adopts a PCD or CBN high-hardness blade, and the height difference of the tool nose is required to be adjusted to be within 0.003, so that the high quality of processing is ensured; the superhard cutter is slowly abraded, the service life can be prolonged, the production line can be ensured not to stop for a long time, the downtime for cutter changing is reduced, and the processing efficiency and the quality level are further improved.

In this embodiment, the closed-loop processing of the production line is realized through automatic processing, automatic measurement, automatic cleaning, automatic feedback and automatic adjustment, and the intellectualization is realized.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

An automatic processing technology of a VVT rotor is characterized by comprising the following steps:

1) the feeding device conveys the VVT rotor (1) to a robot hand grasping position;

2) the robot grabs a positioning surface (23) of the VVT rotor (1) close to the clamp (2) to prepare for clamping;

3) the fixture (2) blows air to clean the positioning surface (23) of the fixture (2) and the VVT rotor (1);

4) the robot installs the VVT rotor (1) on the positioning surface (23) of the clamp (2);

5) the robot holds and presses the VVT rotor (1), and the VVT rotor (1) is fixed on the positioning surface (23) through a clamping mechanism on the clamp (2);

6) the fixture (2) is used for detecting whether the VVT rotor (1) is installed in place or not;

7) after the VVT rotor (1) is confirmed to be installed in place, a cutter is adopted to carry out cutter machining on the VVT rotor (1), and the cutter is installed on a machine tool;

the steps are all completed in a processing center in a centralized way;

the fixture (2) comprises a front processing station and a back processing station, the back processing station comprises a back clamping mechanism (21), the back clamping mechanism (21) comprises 3 clamping jaws (211) which are uniformly arranged in the circumferential direction, the bottom ends of the clamping jaws (211) are connected with guide rods (214), the end parts of the guide rods (214) are connected with a telescopic mechanism (215), the 3 guide rods (214) are obliquely arranged, the bottom ends of the 3 guide rods (214) are outwards expanded and arranged, the end surfaces of the clamping jaws (211) are arranged to be arc-shaped surfaces, the arc-shaped surfaces are just attached to the outer wall of the VVT rotor (1), a U-shaped groove (212) is formed in one end, in contact with the VVT rotor (1), of at least one clamping jaw (211), the U-shaped groove (212) is matched with a convex edge arranged on the outer wall of the VVT rotor (1), the front processing station comprises the front clamping mechanism (22), positive chucking mechanism (22) is including the fixed body (225), the external diameter from the top down of the fixed body (225) is the trend of crescent, the outer wall cover of the fixed body (225) is equipped with interior bloated cover (224), interior bloated cover (224) can reciprocate along the fixed body (225) outer wall, the equal cooperation of reverse side chucking mechanism (21) and positive chucking mechanism (22) is provided with locating surface (23), anchor clamps (2) still include gas blowing device, gas blowing device includes pipeline (28) and is provided with jet (27) on pipeline (28).
2. The automatic machining process of the VVT rotor of claim 1, wherein 3 guide rods (214) are connected by a fixed ring (213), and the fixed ring (213) is provided with at least 2.
3. The automatic machining process of the VVT rotor according to claim 1, wherein the front clamping mechanism (22) at least comprises a positioning block (226) and a clamping block (223), one end of the positioning block (226) contacting with the VVT rotor (1) is arranged to be a first arc-shaped surface, a clamping groove is arranged on the clamping block (223), and the clamping groove is matched with a convex edge arranged on the outer wall of the VVT rotor (1).
4. The automatic machining process of the VVT rotor is characterized in that the clamp (2) comprises a bottom plate (24), wherein 2 mounting plates (25) are arranged on the bottom plate (24), the 2 mounting plates (25) are respectively used for mounting a front machining station and a back machining station, a cylinder (26) is arranged on the mounting plate (25), and the back clamping mechanism (21) and the front clamping mechanism (22) are arranged on the cylinder (26).
5. The automatic machining process of the VVT rotor is characterized in that the front clamping mechanism (22) comprises a fixing groove (222), a fixing body (225) is arranged on the inner side of the fixing groove (222), a certain distance is reserved between the fixing body (225) and the inner bottom of the fixing groove (222), an inner expansion sleeve (224) is arranged at the opening end of the fixing groove (222), the bottom of the fixing groove (222) is connected with a telescopic piece (221), and the positioning surface (23) is sleeved on the outer wall of the inner expansion sleeve (224).
6. The automatic machining process of the VVT rotor is characterized in that the machining center further comprises an automatic measuring machine, the automatic measuring machine is used for measuring the size of the VVT rotor (1), transmitting the measured data to an industrial personal computer in real time, and automatically adjusting the cutter compensation of the machine tool through the size change.
7. The automatic machining process for the VVT rotor according to claim 1, wherein a tool setting gauge and a machine measuring head are installed on the machine tool.
8. The automatic machining process of the VVT rotor is characterized in that the machine tool is connected with an industrial personal computer, and the industrial personal computer can process the feedback data of the machine tool and control and adjust the parameters of the machine tool; the main shaft of the machine tool is provided with a through cooling and circulating cooling system.
9. The automatic machining process for the VVT rotor of claim 1, wherein the spindle of the machine tool adopts a BBT or HSK interface.
10. The automatic machining process for the VVT rotor according to claim 1, wherein the cutter is a PCD or CBN high-hardness blade or a PCD and CBN composite forming cutter.