CN111545787A - Processing equipment for main cylinder piston and control method thereof - Google Patents

Processing equipment for main cylinder piston and control method thereof Download PDF

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Publication number
CN111545787A
CN111545787A CN202010386626.6A CN202010386626A CN111545787A CN 111545787 A CN111545787 A CN 111545787A CN 202010386626 A CN202010386626 A CN 202010386626A CN 111545787 A CN111545787 A CN 111545787A
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China
Prior art keywords
servo motor
drill bit
drilling
piston body
point
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CN202010386626.6A
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Chinese (zh)
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CN111545787B (en
Inventor
潘松辉
潘菁
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Dachang Automobile Parts Co ltd
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Dachang Automobile Parts Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
    • B23B39/161—Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/36—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission in which a servomotor forms an essential element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw

Abstract

The invention belongs to the technical field of brake system part processing, and particularly relates to a processing device of a main cylinder piston, wherein the main cylinder piston comprises a piston body, the front end of the piston body is provided with a piston hole, the rear end of the piston body is provided with a ball head hole, the outer wall of the piston body is also provided with a plurality of oil return holes which are arranged along the radial direction and lead to the piston hole, and the oil return holes are uniformly distributed along the circumferential direction; the machining equipment comprises a rack, a drilling device, a clamp and a feeding device, wherein the drilling device is arranged on the rack and used for drilling a piston body, the clamp is used for clamping the piston body, and the feeding device is used for feeding the piston body on the clamp into the drilling device; the feeding device can drive the piston body on the clamp to axially rotate, so that the drilling device can process a plurality of oil return holes on the piston body. The machining equipment can effectively improve the machining efficiency, and the control method can effectively control the abrasion degree of the cutter so as to improve the service life of the cutter and the drilling precision.

Description

Processing equipment for main cylinder piston and control method thereof
Technical Field
The invention belongs to the technical field of brake system part processing, and particularly relates to processing equipment for a main cylinder piston.
Background
The automobile brake master cylinder is an important part in an automobile brake system and has the function of pushing oil into a brake cylinder through a piston of the brake master cylinder so as to realize brake in automobile running. The small piston is concerned with the quality of the automobile and the life safety of passengers, the piston can vibrate and even jump when moving in a severe environment for a long time, damage is easily caused, and if the precision is not high and the surface strength is not enough, the damage of the piston can be accelerated, and the driving safety is influenced.
The existing drilling equipment for producing the piston needs manual operation, so that the machining efficiency is low, and therefore, the machining equipment with a high automation degree is needed to be provided for drilling the piston.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a master cylinder piston machining device with high automation degree, which can effectively improve the machining efficiency, and a control method of the master cylinder piston machining device can effectively control the abrasion degree of a cutter so as to improve the service life of the cutter and the drilling precision.
The purpose of the invention is realized as follows: the utility model provides a processing equipment of master cylinder piston, the master cylinder piston includes the piston body, the front end of piston body has the piston hole, and its rear end has the bulb hole, still be provided with on the piston body outer wall along setting up of radial direction and leading to the oil gallery in piston hole, the oil gallery has a plurality of and follows the circumference direction evenly distributed, processing equipment is used for processing the oil gallery, its characterized in that: the machining equipment comprises a rack, a drilling device, a clamp and a feeding device, wherein the drilling device is arranged on the rack and used for drilling the piston body, the clamp is used for clamping the piston body, and the feeding device is used for feeding the piston body on the clamp into the drilling device; the feeding device can drive the piston body on the clamp to axially rotate, so that the drilling device can process a plurality of oil return holes in the piston body.
By adopting the technical scheme, the main cylinder piston mainly comprises a piston body, wherein the piston body is provided with a plurality of oil return holes which are circumferentially arranged, and in order to improve the processing efficiency of the oil return holes of the piston body, the processing device for processing the oil return holes is arranged; wherein, advance manual operation, the piston body that will wait to process is put into anchor clamps, press from both sides the piston body tightly by anchor clamps, in feeding device sent the piston body on the anchor clamps into drilling equipment afterwards, drilling equipment drills the piston body, after the drilling of the first oil gallery on the piston body is accomplished, the piston body on the feeding device drive anchor clamps rotates, make next on the piston body wait to process some subtend drilling equipment, drilling equipment drills this processing point again, so relapse, thereby accomplish the whole processing of a plurality of oil gallery on the piston body, adopt foretell processingequipment can effectual improvement drilling efficiency.
The invention is further configured to: the drilling device comprises a point hole drill bit, a first motor for driving the point hole drill bit to rotate, a drilling drill bit and a second motor for driving the drilling drill bit to rotate, the point hole drill bit and the drilling drill bit are arranged side by side in the front and back direction, and the processing end parts of the point hole drill bit and the drilling drill bit are both arranged towards the feeding device; the feeding device comprises
The first power device is used for driving the piston body on the clamp to axially rotate so that a point to be processed on the piston body is right opposite to the point hole drill or the drilling bit;
the second power device is used for driving the clamp to rapidly move in the vertical direction to be close to or far away from the point hole drill bit and the drilling drill bit;
the third power device is used for driving the clamp to move longitudinally and rapidly so as to enable the clamp to be close to the point hole drill bit and far away from the drilling drill bit or close to the drilling drill bit and far away from the point hole drill bit;
the fourth power device is used for driving the clamp to rapidly move in the transverse direction to be close to or far away from the point hole drill bit and the drilling drill bit;
and the controller is used for controlling the running states of the first power device, the second power device, the third power device and the fourth power device.
By adopting the technical scheme, the traditional drilling method is that one drill bit is directly adopted for drilling, and the drill bit is easy to damage after long time, so that the piston needs to be maintained and replaced frequently;
for the feeding device, the first power device is used for driving the clamp to rotate, so that the drilling device can very conveniently drill the piston body, and the drilling efficiency is effectively improved;
the second power device is used for driving the clamp to move along the vertical direction, so that the piston body on the clamp can be quickly close to or far away from the point hole drill bit and the drilling drill bit;
the third power device is used for driving the clamp to move longitudinally, and after the point drilling bit finishes point drilling on the piston body, the third power device can rapidly drive the piston body to face the drilling bit;
the fourth power device is used for driving the clamp to move left and right, and the hole punching drill bit and the drilling drill bit can punch and drill holes on the piston body in the process that the piston body on the clamp moves left;
by adopting the feeding device, the process distance can be effectively reduced, and the drilling time is further reduced.
The invention is further configured to: the first power device is a first servo motor with a main shaft connected to the clamp;
the second power device comprises two first slide rails arranged in the vertical direction, a first slide seat arranged on the two first slide rails in a sliding manner, a first ball screw positioned between the two first slide rails and a nut seat of the first ball screw fixed on the first slide seat, and a second servo motor driving the first ball screw to rotate, wherein the first servo motor is arranged on the first slide seat;
the third power device comprises two second sliding rails which are longitudinally arranged, a second sliding seat which is arranged on the two second sliding rails in a sliding manner, a second ball screw which is positioned between the two second sliding rails and is provided with a nut seat fixed on the second sliding seat, and a third servo motor which drives the second ball screw to rotate, wherein the two first sliding rails are arranged on the second sliding seat;
the fourth power device comprises a third sliding seat which is transversely arranged on two third sliding rails on the rack and is arranged on the two third sliding rails in a sliding manner, the fourth power device further comprises a fourth servo motor which is positioned between the third sliding rails and is fixed on a nut seat of the third sliding rail, a third ball screw on the third sliding seat and a fourth servo motor which drives the third ball screw to rotate, two connecting columns which are vertically arranged are arranged on the third sliding seat, and the second sliding rails are arranged on the connecting columns through mounting seats.
A control method for the processing equipment of the master cylinder piston comprises the following specific steps:
s1, after the piston body to be machined is clamped by the clamp, starting a second servo motor and a third servo motor, wherein the second servo motor drives the first sliding seat to vertically approach a point hole drill, and the third servo motor drives the second sliding seat to longitudinally approach a point hole drill so that a point to be machined on the piston body is aligned with the point hole drill;
s2, starting a first motor on the point hole drill bit, starting a fourth servo motor, driving a third sliding seat to slide transversely by the fourth servo motor, so that the point hole drill bit performs point hole on the piston body, and resetting the third sliding seat after the point hole drill bit finishes;
s3, starting a first servo motor, wherein the first servo motor drives the clamp to rotate, so that the next point to be processed on the piston body is right opposite to the point hole drill bit;
s4, repeating S2 and S3 until all the points to be processed on the piston body are processed;
s5, starting a third servo motor, driving a second sliding seat to longitudinally approach a drill bit, and enabling a point hole on the piston body to be opposite to the drill bit;
s6, starting a second motor on the drilling bit, starting a fourth servo motor, driving a third sliding seat to slide transversely by the fourth servo motor, so that the drilling bit drills the piston body, and resetting the third sliding seat after the drilling bit drills the piston body;
s7, starting a first servo motor, wherein the first servo motor drives the clamp to rotate, so that the next point hole on the piston body is right opposite to the drill bit;
s8, repeating S6 and S7 until all the point holes on the piston body are processed into oil return holes;
s9, starting a third servo motor to reset the second sliding seat; starting a second servo motor to reset the first sliding seat and dismount the piston body from the clamp; the next piston body to be machined can be performed in sequence according to the steps described above.
Through adopting above-mentioned technical scheme, foretell processing method can effectual improvement processingquality's stability, machining precision and machining efficiency.
The invention is further configured to: the controller comprises a PLC control module, a current sensing module and an alarm module, wherein the current sensing module is used for measuring the running current of the fourth servo motor; the specific control method of the fourth servo motor in steps S2 and S6 is as follows,
1) starting a fourth servo motor, and enabling a third sliding seat to rotate by V in a T1 time period1Is rapidly moved to the point hole drill bit or the drilling drill bit, and the current sensing module detects that the load current of the fourth servo motor is I in the process1；
2) And the PLC control module regulates the rotating speed of the fourth servo motor downwards in the time period of T2 to ensure that the third sliding seat rotates at a V value2Is decelerated towards the point-hole drill bit or the drill bit, and the load current of the fourth servo motor is measured to be I in the process2Wherein the initial load current is Ia，Ia﹥I1Tail load current of Ib；
3) When I is2＜IMax(set fourth servomotor maximum load current) and Ib＝I1When the third slide seat is in the V state, the PLC control module controls the fourth servo motor to rotate reversely to enable the third slide seat to rotate in the V state1Is rapidly moved away from the point or drill bit and is reset, ending, at time period T3;
4) when I is2＝IMaxThe PLC control module controls the fourth servo motor to rotate reversely, so that the third sliding seat rotates in a V shape1The speed of the third slide carriage is fast far away from the point hole drill bit or the drilling drill bit, the PLC control module controls the fourth servo motor to rotate forwards for a time period of T4, and then the third slide carriage is enabled to rotate forwards at a V1Is rapidly moved to a point hole drill bit or a drill bit for a time period of T5, T4 is T5;
the PLC control module adjusts the rotating speed of the fourth servo motor downwards in the time period of T6 to enable the third sliding seat to rotate at V2Is reduced to move towards the point-hole drill bit or the drilling drill bit, and the load current of the fourth servo motor is measured to be I in the process6Wherein the initial load current is Ic，Ic﹥I1Tail load current of Id；
5) In step 4), when I6＜IMaxAnd Id＝I1When the third slide seat is in the V state, the PLC control module controls the fourth servo motor to rotate reversely to enable the third slide seat to rotate in the V state1Is rapidly moved away from the point or drill bit and is reset, ending, at time period T7; when I is6＝IMaxThe PLC control module controls the fourth servo motor to rotate reversely, so that the third sliding seat rotates in a V shape1Is rapidly moved away from the point hole drill bit or the drilling drill bit and is reset, and the PLC control module controls the alarm module to give an alarm, and the time period is T8.
The control method controls the feeding state of the piston body on the clamp by controlling the running state of the fourth servo motor, so that the abrasion of the point hole drill bit and the drilling drill bit can be effectively reduced, and the drilling precision is improved;
wherein, after the piston body contacts the point hole drill bit or the drill bit, the abrasion is reduced, and then the abrasion is reducedThe rotating speed of the fourth servo motor is reduced, namely the feeding speed of the piston body is reduced, so that the aim is fulfilled; after a certain wear of the point-hole drill or the drill, i.e. when the load current I of the fourth servomotor has occurred2＝IMaxWhen the set maximum load current of the fourth servo motor, namely the point hole drill bit or the drill bit is abraded and the fourth servo motor drives the piston body to perform point hole drilling or drill through the load increment calculation, the PLC controller controls the servo motor to rotate reversely for a period of time and then rotate normally for a period of time, the external force of the point hole drill bit or the drill bit acting on the piston body can be effectively improved through back-and-forth point hole drilling or drill, and further the further abrasion degree of the point hole drill bit or the drill bit is effectively reduced;
in order to avoid the situation that the precision of the finally processed oil return hole is lower after the point hole drill bit or the drilling drill bit is abraded seriously, the number of times of the point hole drilling or the drilling of the piston body is set to be 1, namely I6＝IMaxWhen the drilling tool is used, the PLC control module controls the fourth servo motor to rotate reversely, so that the third sliding seat is reset, the alarm module gives an alarm to prompt a worker to replace or maintain the point drilling drill bit or the drilling drill bit, and the accuracy of a finally drilled hole is guaranteed.
Drawings
FIG. 1 is a schematic structural view of a piston body of the present invention;
FIG. 2 is a schematic front view of the processing apparatus of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic top view of the processing apparatus of the present invention;
FIG. 5 is a graph showing an operation state of a fourth servo motor according to the present invention;
FIG. 6 is a graph showing an operation state of a fourth servo motor according to the present invention;
FIG. 7 is a graph showing an operation state of a fourth servo motor according to the present invention;
the reference numbers in the figures are: 100. a piston body; 101. a piston bore; 102. a ball head hole; 103. an oil return hole; 200. a frame; 300. a drilling device; 301. a point hole drill bit; 302. a first motor; 303. a drill bit for drilling; 304. a second motor; 400. a clamp; 500. a feeding device; 510. a first power unit; 511. a first servo motor; 520. a second power unit; 521. a first slide rail; 522. a first slider; 523. a first ball screw; 524. a second servo motor; 530. a third power unit; 531. a second slide rail; 532. a second slide carriage; 533. a second ball screw; 534. a third servo motor; 540. a fourth power unit; 541. a third slide rail; 542. a third slide carriage; 543. a third ball screw; 544. a fourth servo motor; 545. connecting columns.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description clearly and completely describes the technical solution in the embodiments of the present invention with reference to the accompanying drawings:
a processing device of a master cylinder piston is disclosed, as shown in fig. 1, the master cylinder piston comprises a piston body 100, a piston hole 101 is arranged at the front end of the piston body 100, a ball head hole 102 is arranged at the rear end of the piston body, oil return holes 103 which are arranged along the radial direction and lead to the piston hole 101 are further arranged on the outer wall of the piston body 100, a plurality of oil return holes 103 are uniformly distributed along the circumferential direction, and the processing device is used for processing the oil return holes 103;
as shown in fig. 2, 3 and 4, the machining apparatus includes a frame 200, a drilling device 300 disposed on the frame 200 for drilling the piston body 100, a clamp 400 for clamping the piston body 100, and a feeding device 500 for feeding the piston body 100 on the clamp 400 to the drilling device 300; the feeding device 500 can drive the piston body 100 on the fixture 400 to axially rotate, so that the drilling device 300 machines a plurality of oil return holes 103 on the piston body 100.
The master cylinder piston mainly comprises a piston body 100, wherein a plurality of oil return holes 103 are circumferentially arranged on the piston body 100, and in order to improve the processing efficiency of the oil return holes 103 of the piston body 100, a processing device for processing the oil return holes 103 is arranged; the piston body 100 to be machined is placed into the fixture 400 through manual operation, the piston body 100 is clamped by the fixture 400, then the feeding device 500 sends the piston body 100 on the fixture 400 into the drilling device 300, the drilling device 300 drills the piston body 100, after the drilling of the first oil return hole 103 in the piston body 100 is completed, the feeding device 500 drives the piston body 100 on the fixture 400 to rotate, so that the next point to be machined on the piston body 100 faces the drilling device 300, and the drilling device 300 drills the machined point again, and the operation is repeated, so that all the oil return holes 103 in the piston body 100 are machined, and the drilling efficiency can be effectively improved through the machining device.
The drilling device 300 comprises a point hole drill 301, a first motor 302 for driving the point hole drill 301 to rotate, a drilling drill 303 and a second motor 304 for driving the drilling drill 303 to rotate, wherein the point hole drill 301 and the drilling drill 303 are arranged side by side in the front-back direction, and the processing end parts of the point hole drill 301 and the drilling drill 303 face the feeding device 500; the feeding device 500 comprises
The first power device 510 is used for driving the piston body 100 on the clamp 400 to axially rotate, so that a point to be processed on the piston body 100 is aligned with the point hole drill 301 or the drilling bit 303;
the second power device 520 is used for driving the clamp 400 to rapidly move in the vertical direction to be close to or far away from the point hole drill bit 301 and the drilling bit 303;
a third power device 530 for driving the clamp 400 to move longitudinally and rapidly so as to enable the clamp 400 to be close to the point hole drill 301 and far away from the drilling bit 303, or close to the drilling bit 303 and far away from the point hole drill 301;
a fourth power device 540 for driving the clamp 400 to move rapidly in the transverse direction to approach or depart from the spot-drilling bit 301 and the drilling bit 303;
a controller for controlling the operation states of the first power unit 510, the second power unit 520, the third power unit 530 and the fourth power unit 540.
According to the traditional drilling method, one drill bit is directly adopted for drilling, and the drill bit is easy to damage after a long time, so that the drill bit needs to be maintained and replaced frequently, the spot-hole drill bit 301 and the drilling drill bit 303 are arranged, the first motor 302 drives the spot-hole drill bit 301 to spot holes on the piston body 100, and then the second motor 304 drives the drilling drill bit 303 to drill the spot holes on the piston body 100, so that the service life of the drilling drill bit 303 is effectively prolonged, and the maintenance period is prolonged;
for the feeding device 500, wherein the first power device 510 is used for driving the clamp 400 to rotate, so that the drilling device 300 can very conveniently drill the piston body 100, and the drilling efficiency is effectively improved;
the second power device 520 is used for driving the clamp 400 to move in the vertical direction, so that the piston body 100 on the clamp 400 can rapidly approach or depart from the spot-drilling drill bit 301 and the drilling drill bit 303;
the third power device 530 is used for driving the clamp 400 to move longitudinally, and after the hole drilling bit 301 performs hole drilling on the piston body 100, the piston body 100 can be rapidly driven to perform hole drilling on the drill bit 303 through the third power device 530;
the fourth power device 540 is used for driving the clamp 400 to move left and right, and in the process that the piston body 100 on the clamp 400 moves left, the point hole drill 301 and the drilling drill 303 perform point hole drilling and drilling on the piston body 100;
by adopting the feeding device 500, the process distance can be effectively reduced, and the drilling time is further reduced.
The first power device 510 is a first servo motor 511 with a main shaft connected to the fixture 400;
the second power device 520 comprises two first slide rails 521 arranged in the vertical direction, a first slide base 522 arranged on the two first slide rails 521 in a sliding manner, a first ball screw 523 positioned between the two first slide rails 521 and having a nut seat fixed on the first slide base 522, and a second servo motor 524 driving the first ball screw to rotate, wherein the first servo motor 511 is arranged on the first slide base 522;
the third power device 530 comprises two second slide rails 531 arranged longitudinally, a second slide carriage 532 arranged on the two second slide rails 531 in a sliding manner, a second ball screw 533 which is positioned between the two second slide rails 531 and a nut seat of which is fixed on the second slide carriage 532, and a third servo motor 534 driving the second ball screw to rotate, wherein the two first slide rails 521 are arranged on the second slide carriage 532;
the fourth power device 540 includes two third slide rails 541 transversely disposed on the rack 200 and a third slide carriage 542 slidably disposed on the two third slide rails 541, the fourth power device 540 further includes a third ball screw 543 located between the two third slide rails 541 and having a nut seat fixed on the third slide carriage 542 and a fourth servo motor 544 for driving the third ball screw to rotate, the third slide carriage 542 has two connecting posts 545 vertically disposed, and the second slide rail 531 is disposed on the connecting posts 545 through the mounting seat.
A control method for the processing equipment of the master cylinder piston comprises the following specific steps:
s1, after the to-be-processed piston body 100 is clamped by the clamp 400, the second servo motor 524 and the third servo motor 534 are started, the second servo motor 524 drives the first slide carriage 522 to vertically approach the point hole drilling, the third servo motor 534 drives the second slide carriage 532 to longitudinally approach the point hole drilling bit 301, so that the to-be-processed point on the piston body 100 is aligned with the point hole drilling bit 301;
s2, starting the first motor 302 on the point hole drill 301, starting the fourth servo motor 544, driving the third sliding seat 542 to slide transversely by the fourth servo motor 544, so that the point hole drill 301 performs point hole drilling on the piston body 100, and resetting the third sliding seat 542 after completion;
s3, starting the first servo motor 511, wherein the first servo motor 511 drives the clamp 400 to rotate, so that the next point to be processed on the piston body 100 is right opposite to the point hole drill 301;
s4, repeating S2 and S3 until all the points to be machined on the piston body 100 are machined;
s5, starting a third servo motor 534, wherein the third servo motor 534 drives the second sliding seat 532 to be longitudinally close to the drilling bit 303, and the point hole on the piston body 100 is opposite to the drilling bit 303;
s6, starting the second motor 304 on the drilling bit 303, starting the fourth servo motor 544, driving the third sliding seat 542 to slide transversely by the fourth servo motor 544, so that the drilling bit 303 drills the piston body 100, and resetting the third sliding seat 542 after the drilling bit 303 drills the piston body 100;
s7, starting the first servo motor 511, wherein the first servo motor 511 drives the clamp 400 to rotate, so that the next point hole on the piston body 100 is opposite to the drill bit 303;
s8, repeating S6 and S7 until all the point holes on the piston body 100 are processed into oil return holes 103;
s9, starting the third servo motor 534 to reset the second sliding seat 532; starting the second servo motor 524 to reset the first slider 522 and remove the piston body 100 from the jig 400; the next piston body 100 to be machined may be performed in sequence according to the above steps.
Through adopting above-mentioned technical scheme, foretell processing method can effectual improvement processingquality's stability, machining precision and machining efficiency.
The controller comprises a PLC control module, a current sensing module and an alarm module, wherein the current sensing module is used for measuring the running current of a fourth servo motor;
as shown in fig. 5, 6 and 7, the specific control method of the fourth servo motor in steps S2 and S6 is as follows,
1) the fourth servo motor 544 is started, and the third slide carriage 542 is driven at V during the time period T11Is rapidly moved to the point-hole drill 301 or the drilling drill 303, during which the current sensing module detects that the load current of the fourth servo motor 544 is I1；
2) And the PLC control module adjusts the rotating speed of the fourth servo motor 544 downwards in the time period T2 so that the third sliding seat 542 can move at V2Is decelerated towards the point-hole drill 301 or the drill bit 303, during which the load current of the fourth servo motor 544 is measured as I2Wherein the initial load current is Ia，Ia﹥I1Tail load current of Ib；
3) When I is2＜IMax(set maximum load current of fourth servo motor 544) and Ib＝I1In the meantime, the PLC control module controls the fourth servo motor 544 to rotate reversely, so that the third slide carriage 542 rotates at V1Is fast and far awayThe off-point drill bit 301 or the drilling bit 303 moves and resets, and the time period is T3;
4) when I is2＝IMaxThe PLC control module controls the fourth servo motor 544 to rotate reversely, so that the third sliding seat 542 rotates at V1Is rapidly moved away from the point-hole drill bit 301 or the drill bit 303 for a time period T4, and then the PLC control module controls the fourth servo motor 544 to rotate forward, causing the third slide 542 to move at V1Is rapidly moved to the point-hole drill bit 301 or the drilling bit 303 for a time period of T5, T4 being T5;
the PLC control module adjusts the rotation speed of the fourth servo motor 544 downward during the time period T6 to make the third sliding seat 542 at V2Is reduced to move towards the point-hole drill 301 or the drill bit 303, during which the load current of the fourth servo motor 544 is measured as I6Wherein the initial load current is Ic，Ic﹥I1And the tail load current is Id;
5) in step 4), when I6＜IMaxAnd Id＝I1In the meantime, the PLC control module controls the fourth servo motor 544 to rotate reversely, so that the third slide carriage 542 rotates at V1Is rapidly moved away from the point-hole bit 301 or the drill bit 303 and is reset, ending with a time period T7; when I is6＝IMaxThe PLC control module controls the fourth servo motor 544 to rotate reversely, so that the third sliding seat 542 rotates at V1Is rapidly moved away from the point-hole drill bit 301 or the drilling drill bit 303 and is reset, and the PLC control module controls the alarm module to give an alarm, and the time period is T8.
The control method controls the feeding state of the piston body 100 on the clamp 400 by controlling the running state of the fourth servo motor 544, so that the abrasion of the point hole drill 301 and the drilling drill 303 can be effectively reduced, and the drilling precision can be improved;
after the piston body 100 contacts the point hole drill 301 or the drilling bit 303, the rotation speed of the fourth servo motor 544 is reduced to reduce abrasion, that is, the feeding speed of the piston body 100 is reduced, so that the purpose is achieved; after a certain wear of the point drill 301 or the drill bit 303, i.e. when the fourth servomotor 544 has occurredLoad current I of2＝IMax(the set maximum load current of the fourth servo motor 544, which is calculated by the load increment when the fourth servo motor 544 drives the piston body 100 to perform hole spotting or hole drilling after the point-hole drill 301 or the hole drilling drill 303 is worn), the PLC controller controls the servo motor to rotate reversely for a period of time, and then rotate normally for a period of time, so that the external force of the point-hole drill 301 or the hole drilling drill 303 acting on the piston body 100 can be effectively improved by performing hole spotting or hole drilling back and forth, and further the further wear degree of the point-hole drill 301 or the hole drilling drill 303 is effectively reduced;
in order to avoid the low precision of the oil return hole 103 which is finally processed after the point hole drill 301 or the drilling drill 303 is worn seriously, the number of times of point holes or drilling back and forth of the piston body 100 is set to 1, namely I6＝IMaxWhen the situation occurs, the PLC control module controls the fourth servo motor 544 to rotate in the reverse direction, so that the third sliding seat 542 is reset, and the alarm module gives an alarm to prompt a worker that the point drilling bit 301 or the drilling bit 303 needs to be replaced or maintained, thereby ensuring the accuracy of the finally drilled hole. The above-mentioned embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained by those skilled in the art based on the above-mentioned embodiments should also belong to the protection scope of the present invention without any creative effort, so that: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (5)

1. The utility model provides a processing equipment of master cylinder piston, the master cylinder piston includes piston body (100), the front end of piston body (100) has piston hole (101), and its rear end has bulb hole (102), still be provided with on piston body (100) outer wall along the setting of radial direction and lead to oil gallery (103) of piston hole (101), oil gallery (103) have a plurality of and along circumferential direction evenly distributed, processing equipment is used for processing oil gallery (103), its characterized in that: the machining equipment comprises a rack (200), a drilling device (300) which is arranged on the rack (200) and used for drilling the piston body (100), a clamp (400) used for clamping the piston body (100), and a feeding device (500) used for feeding the piston body (100) on the clamp (400) into the drilling device (300); the feeding device (500) can drive the piston body (100) on the clamp (400) to axially rotate, so that the drilling device (300) can machine the oil return holes (103) on the piston body (100).
2. The master cylinder piston machining apparatus according to claim 1, wherein: the drilling device (300) comprises a point hole drill bit (301), a first motor (302) for driving the point hole drill bit (301) to rotate, a drilling drill bit (303) and a second motor (304) for driving the drilling drill bit (303) to rotate, the point hole drill bit (301) and the drilling drill bit (303) are arranged side by side in the front-back direction, and the processing end parts of the point hole drill bit and the drilling drill bit are both arranged towards the feeding device (500); the feeding device (500) comprises
The first power device (510) is used for driving the piston body (100) on the clamp (400) to axially rotate so that a point to be machined on the piston body (100) is aligned with the point hole drill (301) or the drilling bit (303);
a second power device (520) for driving the clamp (400) to move rapidly in the vertical direction to get close to or far away from the point hole drill bit (301) and the drilling drill bit (303);
third power means (530) for driving the clamp (400) to move longitudinally rapidly to move the clamp (400) away from the point-hole drill (303) close to the point-hole drill (301) or away from the point-hole drill (301) close to the point-hole drill (303);
a fourth power device (540) for driving the clamp (400) to move rapidly in the transverse direction to approach or separate from the point hole drill bit (301) and the drilling drill bit (303);
a controller for controlling the operating states of the first power unit (510), the second power unit (520), the third power unit (530), and the fourth power unit (540).
3. The master cylinder piston machining apparatus according to claim 2, wherein: the first power device (510) is a first servo motor (511) with a main shaft connected to the clamp (400);
the second power device (520) comprises two first sliding rails (521) arranged in the vertical direction, a first sliding seat (522) arranged on the two first sliding rails (521) in a sliding manner, the second power device (520) further comprises a first ball screw (523) which is positioned between the two first sliding rails (521) and is provided with a nut seat fixed on the first sliding seat (522), and a second servo motor (524) for driving the first ball screw to rotate, and the first servo motor (511) is arranged on the first sliding seat (522);
the third power device (530) comprises two second slide rails (531) which are longitudinally arranged and a second slide base (532) which is arranged on the two second slide rails (531) in a sliding manner, the third power device (530) further comprises a second ball screw (533) which is positioned between the two second slide rails (531) and of which a nut base is fixed on the second slide base (532) and a third servo motor (534) which drives the second ball screw to rotate, and the two first slide rails (521) are arranged on the second slide base (532);
the fourth power device (540) comprises two third slide rails (541) transversely arranged on the rack (200) and a third slide carriage (542) slidably arranged on the two third slide rails (541), the fourth power device (540) further comprises a third ball screw (543) positioned between the two third slide rails (541) and a nut seat fixed on the third slide carriage (542) and a fourth servo motor (544) driving the third ball screw to rotate, two connecting columns (545) vertically arranged are arranged on the third slide carriage (542), and the second slide rail (531) is arranged on the connecting columns (545) through a mounting seat.
4. The control method of a master cylinder piston machining apparatus according to claim 3, characterized in that: the specific steps are as follows,
s1, after the piston body (100) to be machined is clamped by the clamp (400), starting a second servo motor (524) and a third servo motor (534), driving the first sliding seat (522) to vertically approach to a point hole for drilling by the second servo motor (524), driving the second sliding seat (532) to longitudinally approach to a point hole drill bit (301) by the third servo motor (534), and enabling a point to be machined on the piston body (100) to be opposite to the point hole drill bit (301);
s2, starting a first motor (302) on the point hole drill bit (301), starting a fourth servo motor (544), driving a third sliding seat (542) to slide transversely by the fourth servo motor (544), enabling the point hole drill bit (301) to carry out point hole on the piston body (100), and resetting the third sliding seat (542) after the point hole drill bit is finished;
s3, starting a first servo motor (511), wherein the first servo motor (511) drives a clamp (400) to rotate, so that the next point to be processed on the piston body (100) is right opposite to the point hole drill (301);
s4, repeating S2 and S3 until all the points to be machined on the piston body (100) are machined;
s5, starting a third servo motor (534), wherein the third servo motor (534) drives a second sliding seat (532) to be longitudinally close to the drill bit (303) and enables a point hole on the piston body (100) to be opposite to the drill bit (303);
s6, starting a second motor (304) on the drilling bit (303), starting a fourth servo motor (544), driving the third sliding seat (542) to transversely slide by the fourth servo motor (544), so that the drilling bit (303) drills the piston body (100), and resetting the third sliding seat (542) after the drilling bit (303) finishes drilling;
s7, starting a first servo motor (511), wherein the first servo motor (511) drives a clamp (400) to rotate, so that the next point hole on the piston body (100) is right opposite to the drill bit (303);
s8, repeating S6 and S7 until all the point holes on the piston body (100) are processed into oil return holes (103);
s9, starting a third servo motor (534) to reset the second sliding seat (532); starting a second servo motor (524), resetting the first sliding seat (522) and detaching the piston body (100) from the clamp (400); the next piston body (100) to be machined can be performed in sequence according to the steps described above.
5. The control method according to claim 4, characterized in that: the controller comprises a PLC control module, a current sensing module and an alarm module, wherein the current sensing module is used for measuring the running current of the fourth servo motor; the specific control method of the fourth servo motor in steps S2 and S6 is as follows,
1) starting a fourth servo motor, and enabling a third sliding seat to rotate by V in a T1 time period1Is rapidly moved to the point hole drill bit or the drilling drill bit, and the current sensing module detects that the load current of the fourth servo motor is I in the process1；
2) And the PLC control module regulates the rotating speed of the fourth servo motor downwards in the time period of T2 to ensure that the third sliding seat rotates at a V value2Is decelerated towards the point-hole drill bit or the drill bit, and the load current of the fourth servo motor is measured to be I in the process2Wherein the initial load current is Ia，Ia﹥I1Tail load current of Ib；
3) When I is2＜IMax(set fourth servomotor maximum load current) and Ib＝I1When the third slide seat is in the V state, the PLC control module controls the fourth servo motor to rotate reversely to enable the third slide seat to rotate in the V state1Is rapidly moved away from the point or drill bit and is reset, ending, at time period T3;
4) when I is2＝IMaxThe PLC control module controls the fourth servo motor to rotate reversely, so that the third sliding seat rotates in a V shape1The speed of the third slide carriage is fast far away from the point hole drill bit or the drilling drill bit, the PLC control module controls the fourth servo motor to rotate forwards for a time period of T4, and then the third slide carriage is enabled to rotate forwards at a V1Is rapidly moved to a point hole drill bit or a drill bit for a time period of T5, T4 is T5;
the PLC control module adjusts the rotating speed of the fourth servo motor downwards in the time period of T6 to enable the third sliding seat to rotate at V2Is reduced to move towards the point-hole drill bit or the drilling drill bit, and the load current of the fourth servo motor is measured to be I in the process6Wherein the initial load current is Ic，Ic﹥I1Tail load current of Id；
5) In step 4), when I6＜IMaxAnd Id＝I1The PLC control module controls the fourth servo motorReversing the machine to make the third slide carriage V1Is rapidly moved away from the point or drill bit and is reset, ending, at time period T7; when I is6＝IMaxThe PLC control module controls the fourth servo motor to rotate reversely, so that the third sliding seat rotates in a V shape1Is rapidly moved away from the point hole drill bit or the drilling drill bit and is reset, and the PLC control module controls the alarm module to give an alarm, and the time period is T8.
CN202010386626.6A 2020-05-09 2020-05-09 Processing equipment for main cylinder piston and control method thereof Active CN111545787B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822958A (en) * 1973-06-04 1974-07-09 Ekstrom Carlson & Co Multispindle drilling machine
CN1406712A (en) * 2001-09-11 2003-04-02 Emag机械制造厂有限公司 Milling and drilling processing center
CN107335829A (en) * 2017-08-29 2017-11-10 嘉兴倍成新材料科技有限公司 A kind of coaxial drilling equipment of new material multiaxis
CN206917752U (en) * 2017-03-31 2018-01-23 台州大昌汽车部件有限公司 A kind of centre valve type piston
CN107661998A (en) * 2017-05-18 2018-02-06 广州元凛建筑工程技术开发有限公司 A kind of aluminium section bar fixes perforating device
CN207288947U (en) * 2017-04-07 2018-05-01 南兴装备股份有限公司 It is double bore bag can double-station alternately operating planer type numerical control drilling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822958A (en) * 1973-06-04 1974-07-09 Ekstrom Carlson & Co Multispindle drilling machine
CN1406712A (en) * 2001-09-11 2003-04-02 Emag机械制造厂有限公司 Milling and drilling processing center
CN206917752U (en) * 2017-03-31 2018-01-23 台州大昌汽车部件有限公司 A kind of centre valve type piston
CN207288947U (en) * 2017-04-07 2018-05-01 南兴装备股份有限公司 It is double bore bag can double-station alternately operating planer type numerical control drilling device
CN107661998A (en) * 2017-05-18 2018-02-06 广州元凛建筑工程技术开发有限公司 A kind of aluminium section bar fixes perforating device
CN107335829A (en) * 2017-08-29 2017-11-10 嘉兴倍成新材料科技有限公司 A kind of coaxial drilling equipment of new material multiaxis

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