CN110625339A - Production process based on automatic machining of automobile parts - Google Patents

Production process based on automatic machining of automobile parts Download PDF

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Publication number
CN110625339A
CN110625339A CN201910919728.7A CN201910919728A CN110625339A CN 110625339 A CN110625339 A CN 110625339A CN 201910919728 A CN201910919728 A CN 201910919728A CN 110625339 A CN110625339 A CN 110625339A
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China
Prior art keywords
cutting
workpiece
iron ore
piece
protective cover
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Application number
CN201910919728.7A
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Chinese (zh)
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CN110625339B (en
Inventor
胡春秀
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Chongqing Beidi Siding Machinery Co.,Ltd.
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Wenzhou Ruiming Industrial Co Ltd
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Priority to CN201910919728.7A priority Critical patent/CN110625339B/en
Publication of CN110625339A publication Critical patent/CN110625339A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Milling Processes (AREA)

Abstract

The invention discloses a production process based on automatic processing of automobile parts, which comprises the following steps of (1) melting and selecting 500kg of raw materials with the density of more than 2.4g/cm3The aluminum block of (1); selecting 80kg of iron ore with the moisture content of less than or equal to 20 percent, preferably 15 percent, crushing the iron ore, sieving the crushed iron ore by a 600-mesh sieve, placing the iron ore obtained by sieving and filtering the iron ore into a sintering furnace for sintering reduction, and controlling the sintering reduction time to be 72 hours to obtain a blank A; and then placing the aluminum block and the blank A in a vacuum furnace, and injecting 100kg of molten steel into the vacuum furnace for vacuum induction smelting, wherein the temperature of the vacuum furnace is controlled at 1000 ℃, the pressure is controlled at 1.4mpa, and the time of vacuum induction smelting is controlled at 60min to obtain the raw material A in a molten state. The invention is controlled by the lifting deviceMake cutting member's upper and lower action to set up the protective cover by first driving piece driven on the cutting bed, guarantee when cutting the work piece, can keep apart cutting area and operating personnel, and when placing the work piece, cutting member can keep away from operating personnel, and then has promoted a production technology's security performance based on automobile parts automated processing, has guaranteed the personal safety of operating personnel in cutting process.

Description

Production process based on automatic machining of automobile parts
Technical Field
The invention belongs to the technical field of automobile part production, and particularly relates to a production process based on automatic machining of automobile parts.
Background
In the braking system of the automobile, various metal parts are needed, such as pneumatic valves and the like, and the valve body is generally formed by directly die-casting molten aluminum. In the preparation process, an aluminum ingot is usually used for direct die-casting molding after being melted, the cost is high, and the strength and the corrosion resistance of the workpiece are not high. And the die-cast workpiece needs to be cut into a material handle, the existing equipment does not have a protection measure during cutting, metal scraps in the cutting process often fly to the greatest extent to hurt operators, the safety performance is poor, and safety accidents are easy to occur.
Disclosure of Invention
The invention provides a production process based on automatic machining of automobile parts, which is high in workpiece strength, corrosion resistance and cutting safety, and aims to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a production process based on automatic machining of automobile parts comprises the following steps:
(1) melting raw materials: 500kg of the material with the density of more than 2.4g/cm is selected3The aluminum block of (1); selecting 80kg of iron ore with the moisture content of less than or equal to 20 percent, preferably 15 percent, crushing the iron ore, sieving the crushed iron ore by a 600-mesh sieve, placing the iron ore obtained by sieving and filtering the iron ore into a sintering furnace for sintering reduction, and controlling the sintering reduction time to be 72 hours to obtain a blank A; then placing the aluminum block and the blank A in a vacuum furnace, and injecting 100kg of molten steel into the vacuum furnace for vacuum induction smelting, wherein the temperature of the vacuum furnace is controlled at 1000 ℃, the pressure is controlled at 1.4mpa, and the vacuum induction smelting time is controlled at 60min to obtain a molten raw material A;
(2) die-casting, namely injecting the raw material A subjected to degassing in the step (2) into a workpiece die, and performing die-casting forming through a pressure casting machine to obtain a workpiece blank;
(3) a material cutting handle: cutting a material handle of a workpiece blank by material handle cutting equipment, wherein the material handle cutting equipment comprises a cutting table, a protective device, a cutting part and a lifting device for driving the cutting part to move up and down; the protective device comprises a protective cover and a first driving piece, wherein one side of the protective cover can be connected to the cutting table in a turnover mode, and the first driving piece drives the protective cover to turn over up and down; during cutting, a workpiece blank is placed on a cutting table, the protective cover is driven by the first driving piece to turn downwards, and then the lifting device drives the cutting part to move to cut the material handle to obtain a workpiece;
(4) deburring: removing burrs on the surface of a workpiece blank by a file, and removing burr scraps adhered to the surface of the workpiece by spraying the workpiece by an air gun;
(5) and (3) air tightness detection: detecting the air tightness of the workpiece by adopting air tightness detection equipment, continuously processing qualified products, and screening out air leakage products;
(6) shot blasting: and performing surface shot blasting treatment on the dried workpiece by using a shot blasting machine to obtain a finished product after shot blasting is finished.
The invention adopts iron ore, steel and aluminum material as raw materials, effectively improves the strength and tensile strength of the workpiece, and prolongs the service life of the workpiece; the steel and the aluminum material can generate a synergistic interaction effect, so that the corrosion resistance of the workpiece is effectively enhanced, and the service life of the workpiece is further prolonged; the iron ore is low in cost, and impurities in the iron ore are effectively removed after the iron ore is sintered, so that excessive impurities do not exist in the iron ore after the workpiece is die-cast, and the material purity of the workpiece is effectively improved under the condition of ensuring low processing cost; secondly, the cutting equipment is arranged, so that the material handle of the die-cast workpiece can be directly cut off, and the working efficiency is higher; the lifting device is used for controlling the up-and-down action of the cutting part, the protective cover driven by the first driving piece is arranged on the cutting table, the protective cover is turned downwards under the action of the first driving piece during cutting, so that a cutting area is isolated from an operator, the situation that the cut tailings impact the operator under the action of centrifugal force is prevented, after the cutting is finished each time, the cutting part can move downwards under the action of the lifting device to be away from the operator, the operator can conveniently replace the workpiece again, the safety of the production process based on the automatic processing of the automobile parts is improved, and the personal safety of the operator in the cutting process is ensured; the workpieces are detected to be airtight before being delivered out of the garage, so that the workpieces after being delivered out of the garage are qualified products with good airtightness, the condition of air leakage in an automobile braking system cannot occur, good safety is realized, and potential safety hazards are avoided.
Further, after the iron ore in the step (1) is crushed, the iron ore is sieved by a 600-mesh sieve and then is placed in a sintering furnace, and the sintering reduction time is controlled to be 48-72 hours; the temperature of the vacuum furnace is controlled to be 900-; when the temperature of the vacuum furnace is controlled to be lower than 900 ℃, the pressure is lower than 1.2mpa, and the vacuum induction smelting time is lower than 30min, more impurities are remained in the smelted metal material, so that the purity of the workpiece obtained by later processing is lower, the strength and the corrosion resistance of the workpiece can hardly reach the standard, and the service life of the later processing is influenced; when the temperature of the vacuum furnace is controlled to be higher than 1000 ℃, the pressure is higher than 1.4mpa, and the vacuum induction smelting time is higher than 60min, the impurity rate in the smelted metal melt and the temperature of the vacuum furnace are controlled to be 900-1000 ℃, the pressure is controlled to be 1.2-1.4mpa, and the reduction condition does not exist under the condition that the vacuum induction smelting time is controlled to be 30-60min, so that the great waste of energy consumption is caused, and the cost is very high; after a large number of tests and verifications, the data value range is the best data value.
Preferably, the shot blasting machine performs surface shot blasting treatment on the dried workpiece by adopting 4mm stainless steel shots, wherein the shot blasting speed is controlled at 120 nds, and the shot blasting time is controlled at 15 min.
Furthermore, the lifting device comprises a guide piece arranged on the cutting table, a moving piece matched with the guide piece and a first driving piece for driving the moving piece to move up and down; the cutting component is arranged on the movable piece; after the protective cover lid, second driving piece drive moving part along guide part rebound, and then the drive is installed and is risen at the cutting part on the moving part to reach the purpose of cutting the work piece, after the cutting is accomplished, second driving piece drive moving part rebound, and the cutting part descends, and then can keep a safe distance between assurance cutting part and the operating personnel, ensured operating personnel's personal safety.
Further, the cutting component comprises a cutting piece and a third driving piece for driving the cutting piece to rotate; the third driving part drives the cutting part to rotate so as to cut the workpiece.
Furthermore, the third driving piece comprises a rotating shaft, a transmission belt and a driving motor which are arranged on the moving piece, the driving motor drives the rotating shaft to rotate through the transmission belt, and the cutting piece is fixedly connected with the rotating shaft; the driving motor rotates through the driving transmission belt and then drives the rotating shaft to rotate, so that the cutting piece fixedly connected to the rotating shaft can rotate quickly, and then the workpiece can be cut.
The first driving part is arranged on the base; the response piece can detect whether the protective cover covers down, and only after the protective cover lid just can start and then drive the ascending cutting part of cutting part and cut the work piece.
Furthermore, a reinforcing rod is arranged on the protective cover, one end of the reinforcing rod is fixedly connected with the protective cover, and the other end of the reinforcing rod penetrates through the protective cover to be connected with the second driving piece; the stiffener has not only strengthened the intensity of protective cover, still makes the protective cover can overturn from top to bottom under the drive effect of second driving piece, and then realizes closing, opening the effect to the cutting region.
Preferably, the air tightness detection device comprises a bracket, a water containing tank arranged on the bracket and capable of moving up and down, and a supporting platform arranged above the water containing tank; the supporting platform is provided with a workbench and a pressing part, and the workbench is provided with a first placing seat and a first air inlet assembly; when the work piece was placed on the first seat of placing, one of them admit air chamber cooperation of first air intake subassembly and work piece, the part of sticising then seals other admit air chambers on the work piece, rises the water tank after sealed the completion for the whole submergions of work piece are in aqueous, and whether rethread first air intake subassembly just can judge the work piece qualified through observing whether there is the bubble to the chamber air feed that admits air of work piece, and is easy and simple to handle, whole realization automation mechanized operation, work efficiency is high.
Preferably, the cleaning equipment comprises a cleaning tank, a cleaning basket which can move up and down and is arranged in the cleaning tank, and a basket body driving part for driving the cleaning basket to move up and down; before the airtight detection, the workpiece is subjected to the traditional deburring operation, and in the airtight detection process, part of burr scraps adhered to the workpiece are directly taken away by water in the water containing tank, and a large amount of burr scraps are remained on the workpiece; therefore, after the cleaning equipment is arranged, the workpiece can be quickly and comprehensively cleaned after the air tightness detection, and the working efficiency is high; and the cleaning is completed through the cleaning basket, and in the cleaning process, the workpiece is always positioned in the cleaning basket, so that the single salvaging of the workpiece after the cleaning is completed is avoided, the working efficiency is further improved, and the workload of workers is reduced.
Furthermore, a clamping device is arranged on the cutting table and comprises a workpiece placing seat and a pressing piece which are arranged on the cutting table, and a pressing head is arranged on the pressing piece; the cooperation of placing the seat through tight casting die and work piece can be with firm the fixing on the cutting bed of work piece, has prevented that the work piece from taking place not hard up and flying away from the condition emergence of cutting bed when the cutting, has further guaranteed operating personnel's safety.
Further, the tightening head is a cylindrical rubber piece; the pressing head is made of rubber materials, so that the workpiece can be prevented from being damaged while a large pressure is applied to the workpiece, and the workpiece is well protected.
Further, the cutting table comprises a supporting seat, a bedplate arranged on the supporting seat and an adjusting structure matched with the bedplate; the pressing device is arranged on the bedplate; the position of the bedplate can be adjusted through the adjusting structure, and the adjustable bedplate is further suitable for cutting operation of workpieces with different sizes.
Furthermore, a slot is formed in the bedplate, a bolt penetrates through the slot, and a threaded hole matched with the bolt is formed in the supporting seat; can be in the same place platen and supporting seat are fixed through the cooperation of bolt and screw hole, prevent that the platen from taking place to remove in cutting operation, guaranteed that cutting operation's safety goes on.
Furthermore, the compressing part comprises a supporting part arranged above the workbench, a compressing part and a first driving part for driving the compressing part to move up and down, the first driving part is arranged on the supporting part, and a sealing part is arranged on the compressing part; the pressing piece moves downwards under the action of the first driving piece to apply positive pressure to the workpiece placed on the placing seat, so that the workpiece is fixed on the placing seat, and the sealing piece on the pressing piece can seal the through hole in the workpiece.
The supporting piece is provided with a guide shaft capable of moving up and down, and the guide shaft is connected with the pressing piece; the setting of guiding axle can prevent to sticis the piece and taking place the skew at the in-process that reciprocates, has guaranteed promptly to sticis the piece and can align with the through-hole on the work piece all the time, and then can play better sticising and sealed effect to it.
In summary, the invention has the following advantages: the prepared workpiece has high strength, strong tensile strength, strong corrosion resistance and long service life; the processing cost can be ensured to be low, and the material of the workpiece has high purity and double synergy; the qualified rate of the air tightness of the workpiece is high, and the existence of potential safety hazards is avoided; the cutting equipment is provided with the protective cover, so that the personal safety of operators is effectively guaranteed.
Drawings
Fig. 1 is a schematic structural view of the material handle cutting device in the invention.
Fig. 2 is a front view of the stock shank cutting apparatus.
Fig. 3 is a partial structural schematic diagram of the material handle cutting device.
Fig. 4 is a schematic structural view of the airtightness detection apparatus according to the present invention.
Fig. 5 is a partial schematic view one of fig. 4.
Fig. 6 is a partial schematic view of fig. 4.
Fig. 7 is a schematic structural view of the first placing seat of the present invention.
Fig. 8 is a plan view of the first mounting seat of the present invention.
Fig. 9 is a schematic structural view of a second placing seat of the present invention.
Fig. 10 is a plan view of the second mounting seat of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Example 1
A production process based on automatic machining of automobile parts comprises the following steps: (1) melting raw materials: 500kg of the material with the density of more than 2.4g/cm is selected3The aluminum block of (1); selecting 80kg of iron ore with the moisture content of less than or equal to 20 percent, preferably 15 percent, crushing the iron ore, sieving the crushed iron ore by a 600-mesh sieve, placing the iron ore obtained by sieving and filtering the iron ore into a sintering furnace for sintering reduction, and controlling the sintering reduction time to be 72 hours to obtain a blank A; then placing the aluminum block and the blank A in a vacuum furnace, and injecting 100kg of molten steel into the vacuum furnace for vacuum induction smelting, wherein the temperature of the vacuum furnace is controlled at 1000 ℃, the pressure is controlled at 1.4mpa, and the vacuum induction smelting time is controlled at 60min to obtain a molten raw material A; (2) degassing: placing the raw material A in a molten state in a container barrel made of stainless steel, pumping nitrogen into the raw material A through a degassing machine, removing gas contained in the raw material A, and degassing and refining the raw material A; (3) die-casting, namely injecting the raw material A subjected to degassing in the step (2) into a workpiece die, and performing die-casting forming through a pressure casting machine to obtain a workpiece blank; (4) a material cutting handle: cutting a material handle of a workpiece blank by material handle cutting equipment, wherein the material handle cutting equipment comprises a cutting table 1, a protective device 2, a cutting part 3 and a lifting device 4 for driving the cutting part 3 to move up and down; the protecting device 2 comprises a protecting cover 21 and a first driving piece 22, wherein one side of the protecting cover 21 can be connected to the cutting table in a turnover mode, and the first driving piece 22 is used for driving the protecting cover 21 to turn over up and down; place the work piece blank on the cutting bed during cutting, overturn downwards behind the drive protective cover of first driving piece, later elevating gear drive cutting portionThe workpiece acts to cut the material handle to obtain a workpiece; (5) deburring: manually removing burrs on the surface of a workpiece blank through a file, and then spraying gas to the workpiece through a gas gun to blow off burr scraps adhered to the surface of the workpiece; (6) and (3) air tightness detection: detecting the air tightness of the workpiece by adopting air tightness detection equipment, continuously processing qualified products, and screening out air leakage products; (7) shot blasting: and (3) carrying out surface shot blasting treatment on the dried workpiece by adopting a 4mm stainless steel shot by the shot blasting machine, wherein the shot blasting speed is controlled to be 120 nds, the shot blasting time is controlled to be 15min, and obtaining a finished product after finishing shot blasting.
The sintering furnace, the vacuum furnace, the degassing machine, the pressure casting machine, the air gun and the shot blasting machine can be directly purchased from the market, the prior art is operated and maintained by a specific structural principle, and the details are not repeated
Specifically, as shown in fig. 1-3, a reinforcing rod is disposed on the protective cover, the protective cover 21 includes a cover plate 211 and four baffles 212 annularly disposed at the edge of the cover plate and perpendicular to the cover plate, the bottom end of one of the baffles is hinged to the cutting table through a hinge, two ends of the reinforcing rod are respectively connected to the two bilaterally symmetric baffles, and one end of the reinforcing rod penetrates through one of the baffles, the first driving member 22 is a cylinder, the bottom end of the cylinder is connected to the cutting table, a piston rod of the cylinder is connected to one end of the reinforcing rod 213 penetrating through the baffle, so as to control the protective cover to be turned over up and down by controlling the extension and retraction of the piston rod of the cylinder, when a workpiece is cut, the protective cover is turned over down through the cylinder, so as to isolate the cutting area from an operator, thereby preventing the cut tailings from flying away from the cutting area under the, the safety performance of the whole production process based on automatic processing of automobile parts is improved, and the personal safety of operators is guaranteed.
The lifting device 4 comprises a guide piece 41, a moving piece 42 and a second driving piece 43, the cutting part 3 is arranged on the moving piece 42, the guide piece 41 is two guide rails vertically arranged on a cutting table, the moving piece 42 is plate-shaped, a sliding block matched with the two guide rails is arranged on the moving plate, the second driving piece is a cylinder, the bottom end of the cylinder is fixedly connected with the cutting table 1, a piston rod of the cylinder is connected with the moving plate, the moving plate is driven to move up and down along the guide rails through the expansion and contraction of the piston rod of the cylinder, so as to drive the cutting part arranged on the moving plate to move up and down together, during cutting, the moving plate rises under the action of the cylinder, so that the cutting part can cut the workpiece on the cutting table, after the cutting is completed, the cylinder drives the moving plate to descend, so that the whole cutting part is, the personal safety of the operators is guaranteed.
The cutting part 3 comprises a cutting part 31 and a third driving part for driving the cutting part 31 to rotate, the third driving part comprises a rotating shaft 32, a transmission belt 34 and a driving motor 33 which are arranged on the movable plate, the cutting part 31 is fixedly connected with the rotating shaft 32, specifically, the driving motor 33 is a motor directly purchased in the market, the specific model of the motor does not make requirements, the cutting part 31 is a saw disc fixedly installed on the rotating shaft, and the driving motor 33 drives the rotating shaft to rotate through the transmission belt 34 so as to drive the saw disc to rotate to cut the workpiece; the transmission belt 34 is a synchronous belt, one end of which is sleeved on the output shaft of the driving motor, and the other end is sleeved on the rotating shaft; preferably, a plurality of latch teeth are uniformly distributed on the outer surfaces of the output shaft and the rotating shaft at intervals respectively, a good synchronous effect between the output shaft and the rotating shaft is realized through the matching of the latch teeth and the synchronous belt, and the driving belt is not easy to slip.
As shown in fig. 4, the cutting table 1 includes a supporting base 5, a platen 6 disposed on the supporting base 5, and an adjusting structure matched with the platen, wherein a pressing device is disposed on the platen, specifically, the supporting base is a rectangular structure, the platen is disposed on the upper surface of the supporting base, the adjusting structure includes four first metal posts 51 vertically and fixedly connected to the upper surface of the supporting base, four second metal posts 61 movably mounted on the platen 6 and horizontally disposed to match with the four metal posts 51, fixing grooves 62 disposed on the second metal posts, bolts penetrating through the fixing grooves, and threaded holes disposed on the platen and matched with the bolts, the four metal posts are distributed in a rectangular shape, an inclined plane is disposed at the top end of each first metal post, and a plurality of latch teeth are uniformly spaced on the inclined plane; the second metal column is also provided with an inclined plane matched with the first metal column, and the inclined plane is also uniformly provided with a plurality of clamping teeth at intervals; the fixed slot is a slot which is arranged on the second metal column and penetrates through the upper surface and the lower surface of the second metal column, after the position of the bedplate is adjusted, the inclined plane of the first metal column is placed on the inclined plane of the second metal column, so that the step structures on the two metal columns are tightly matched together, then the bolt in the fixed slot is screwed, the second metal column and the bedplate are fixed together, and the purpose of freely adjusting the position of the bedplate is achieved.
In order to prevent the bedplate from moving during cutting operation, the bedplate 6 is provided with a groove 63, a bolt penetrates through the groove, the supporting seat is provided with a threaded hole matched with the bolt, after the position of the bedplate is adjusted, the bolt is screwed into the threaded hole in the supporting seat, downward extrusion force can be applied to the bedplate, the second metal column can provide stable supporting acting force for the bedplate, and the bedplate can be fixed on the supporting seat.
The clamping device comprises a workpiece placing seat 11 and a pressing part 12 which are arranged on the bedplate 6, the workpiece placing seat is a metal block, a clamping groove matched with a workpiece is formed in the metal block, the pressing part is a rotary cylinder which is fixedly installed on the bedplate and directly purchased in the market, the specific model is not required, a cylindrical pressing head 13 is arranged on the rotary cylinder, and the pressing head 13 is made of rubber materials; when a workpiece is placed, the clamping groove in the aligned metal block on the workpiece is clamped, then the rotary cylinder is started, the pressing head can apply positive pressure to the upper surface of the workpiece (the specific working principle is the prior art, and is not described herein in detail), the workpiece can be stably fixed on the bedplate, the pressing head is made of a rubber material, the workpiece can be protected from being damaged when pressure is applied to the workpiece, and the workpiece is protected well.
As shown in fig. 4-10, the air tightness detecting apparatus can perform air tightness detection on a workpiece having two different air inlet cavities, where we do not define the two different air inlet cavities of the workpiece as a first air inlet cavity and a second air inlet cavity, define a process of detecting the first air inlet cavity as a first detecting step, and define a process of detecting the second air inlet cavity as a second detecting step; the air tightness detection device comprises a bracket 81, a water containing tank 82 which is arranged on the bracket 81 and can move up and down, and a supporting platform 83 arranged above the water containing tank 82, wherein the water containing tank 82 is made of stainless steel, and the upper part of the water containing tank is provided with an opening; the support 81 comprises a cuboid box body which is placed on the ground and is arranged in a hollow mode and a top plate which is arranged right above the box body, the top plate is connected to the box body through two support columns, two sides of the water containing tank are respectively connected with a chain, two sides of the top plate are respectively provided with a motor, the motor is connected with a gear, the chain is sleeved outside the gear, the gear is driven by the motor to rotate, the chain is shortened and extended, and the water containing tank is driven to move up and down; the specific working principle is the prior art, and is not described herein.
Two groups of working platforms 84 and pressing parts 85 are arranged on the supporting platform 83; the two groups of work tables 84 are respectively provided with a sealing component 810; a first placing seat 86 and a first air inlet assembly are arranged on one group of the working tables 84, specifically, the first placing seat is a cuboid metal block, an L-shaped metal block is arranged at the front left corner of the upper surface of the first placing seat, and the rest part of the first placing seat forms a first limit groove 861; first air inlet assembly includes first intake pipe and first head 88 of admitting air, head 88 of admitting air is the metalwork of a drum structure of setting on first spacing groove 861 diapire, and the metalwork setting is in the position department of being close to the right relief angle of diapire, and during the manufacturing, it is integrated into one piece with the metal block, first intake pipe one end and air pump communicate mutually, and the other end and first head of admitting air are linked together.
The other group of the working tables 84 is provided with a second placing seat 87 and a second air inlet assembly, the front part and the left side part of the upper surface of the second placing seat are fixedly connected with a metal block respectively, so that the rest part of the second placing seat forms a second limiting groove 871, the metal blocks are the same in thickness, one ends of the metal blocks are connected to form an L-shaped shape, the thickness of the two metal blocks is smaller than that of the first L-shaped metal block on the placing seat, the second air inlet assembly comprises a second air inlet pipe and a second air inlet head 89, the second air inlet head is a cuboid metal block arranged at the rear position close to the bottom wall of the second limiting groove 871, the metal block is provided with two communicated cylindrical through holes, one end of the second air inlet pipe is communicated with an air pump, and the other end of the second air inlet pipe is.
When a workpiece is placed on a first placing seat to perform a first detection step, a first air inlet cavity of the workpiece can be sealed through a pressing part and a sealing part, so that only one through hole for inserting a first air inlet head is reserved in the first air inlet cavity, then a water containing tank is lifted upwards so that the workpiece is completely immersed in water, air is supplied into the first air inlet cavity of the workpiece through an air pump, and then whether the air tightness of the first air inlet cavity of the workpiece is qualified or not can be detected by observing whether bubbles exist on the water surface or not; and (3) placing the qualified workpiece subjected to the first detection step on a second placing seat, enabling a second air inlet head to be matched with a through hole of a second air inlet cavity in the workpiece, and detecting the workpiece according to the operation of the first detection step so as to detect whether the air tightness of the second air inlet cavity of the workpiece is good or not. The air tightness detection device can realize air tightness detection of two different air inlet cavities of the workpiece, so that the time of a detection process is shortened and the detection efficiency is improved compared with the traditional device.
Specifically, the workbench 84 includes a first platen 841 arranged on the supporting platform, a first positioning structure matched with the first platen, a second platen 842, and a second positioning structure matched with the second platen, the first and second placing seats are respectively installed on the two first platens, the first positioning structure includes a first threaded hole arranged on the supporting platform 83, a first metal block 831 fixedly connected to the supporting platform 83, a second metal block 832 and a bolt 833, the first metal block is provided with a first inclined plane, and a plurality of latch teeth are uniformly arranged on the first inclined plane at intervals; a second inclined plane matched with the first inclined plane is arranged on the second metal block 832, and a plurality of clamping teeth are uniformly arranged on the second inclined plane at intervals; the metal block is also provided with a notch for the bolt to pass through, when the first bedplate is placed on the supporting platform, the second metal block 832 is placed on the upper surface of the first bedplate, the latch on the second inclined plane is meshed with the latch on the first inclined plane on the first metal block 831, then the bolt passes through the notch on the second metal block and is in threaded connection with the first threaded hole on the supporting platform, the second metal plate can apply pressure on the first bedplate, and further the first bedplate is fixed, so that the positioning effect on the first bedplate is realized, the first bedplate is prevented from moving in the detection process, and the detection operation is convenient to perform.
The second positioning structure comprises a second threaded hole formed in the supporting platform 83, a third metal block 834, a fourth metal block 835 and a bolt 833, wherein the third metal block is fixedly connected to the supporting platform 83, a third inclined plane is formed in the third metal block, and a plurality of clamping teeth are uniformly arranged on the third inclined plane at intervals; a fourth inclined plane matched with the third inclined plane is arranged on the fourth metal block 835, and a plurality of clamping teeth are uniformly arranged on the fourth inclined plane at intervals; the fourth metal block is further provided with a groove for the bolt to penetrate through, when the first bedplate is placed on the second bedplate, the fourth metal block is placed on the upper surface of the second bedplate, the latch on the fourth inclined plane is meshed with the latch on the third inclined plane on the third metal block, then the bolt penetrates through the groove in the fourth metal block and is in threaded connection with the second threaded hole in the supporting platform, the fourth metal plate can apply pressure to the second bedplate, the second bedplate is further fixed, the positioning effect on the second bedplate is achieved, the second bedplate is prevented from moving in the detection process, and the detection operation is convenient to conduct.
The pressing part 85 comprises a support 851 arranged above the workbench 84, a pressing part 852 and a first driving part 853 for driving the pressing part 852 to move up and down, the first driving part 853 is arranged on the support 851, and a sealing part is arranged on the pressing part 852; specifically, the support 851 is a metal plate and is fixedly mounted directly above the second platen through four support pillars, the first driving member 853 is a cylinder directly purchased on the market, the cylinder is fixedly mounted on the upper surface of the metal plate, a through hole for a piston rod of the cylinder to pass through is formed in the metal plate, the pressing member 852 is a step-shaped metal pillar fixedly connected to the top end of the piston rod of the cylinder, the sealing member is a circular rubber pad mounted on the lower end face of the metal pillar, when a workpiece is placed on the placing seat, the cylinder drives the metal pillar to move downwards, and then the metal pillar can apply positive pressure to the workpiece, so that the workpiece is fixed on the placing seat, and the circular rubber pad can seal the through hole in the workpiece.
Preferably, a guide shaft 8511 capable of moving up and down is arranged on the support 851, the guide shaft 8511 is connected with the pressing part 852, a through hole for the guide shaft to pass through is formed in the support, the bottom end of the guide shaft is connected with the pressing part, and the guide shaft can prevent the pressing part from deviating in the up-and-down moving process, so that the pressing part can be always aligned with the through hole in the workpiece, and a better pressing and sealing effect can be achieved.
Specifically, the sealing member 810 includes a sealing head 811 and a second driving member 812 for driving the horizontal reciprocating motion of the sealing head 811, the second driving member 812 is disposed on the second platen 842, specifically, the second driving member is a cylinder directly purchased in the market, the sealing head is a cylindrical metal member fixedly connected to the top end of a piston rod of the cylinder, a circular rubber pad is disposed on the front end face of the cylindrical metal member, when a workpiece is placed on the placing seat, the metal member moves in a direction close to the workpiece under the driving action of the cylinder, and finally contacts with the workpiece, and at this time, the circular rubber pad can seal the through hole in the workpiece.

Claims (1)

1. A production process based on automatic machining of automobile parts comprises the following steps:
melting raw materials: 500kg of the material with the density of more than 2.4g/cm is selected3The aluminum block of (1); selecting 80kg of iron ore with the moisture content of less than or equal to 20 percent, preferably 15 percent, crushing the iron ore, sieving the crushed iron ore by a 600-mesh sieve, placing the iron ore obtained by sieving and filtering the iron ore into a sintering furnace for sintering reduction, and controlling the sintering reduction time to be 72 hours to obtain a blank A; then placing the aluminum block and the blank A into a vacuum furnace, and injecting 100kg of molten steel into the vacuum furnace for vacuum induction smeltingControlling the temperature of the vacuum furnace at 1000 ℃, controlling the pressure at 1.4mpa and controlling the vacuum induction smelting time at 60min to obtain a raw material A in a molten state;
degassing: nitrogen is injected into the raw material A through a degassing machine, and gas contained in the raw material A is removed;
die-casting, namely injecting the raw material A subjected to degassing in the step (2) into a workpiece die, and performing die-casting forming through a pressure casting machine to obtain a workpiece blank;
a material cutting handle: cutting a material handle of a workpiece blank by material handle cutting equipment, wherein the material handle cutting equipment comprises a cutting table (1), a protective device (2), a cutting part (3) and a lifting device (4) for driving the cutting part (3) to move up and down; the protective device (2) comprises a protective cover (21) and a first driving piece (22), wherein one side of the protective cover (21) can be connected to the cutting table in a turnover mode, and the first driving piece drives the protective cover (21) to turn over up and down; during cutting, a workpiece blank is placed on a cutting table, the protective cover is driven by the first driving piece to turn downwards, and then the lifting device drives the cutting part to move to cut the material handle to obtain a workpiece; the protective cover is turned downwards to isolate the cutting area from an operator; a reinforcing rod (213) is arranged on the protective cover (21), one end of the reinforcing rod is fixedly connected with the protective cover, and the other end of the reinforcing rod penetrates through the protective cover (21) and is connected with the first driving piece (22); the protective cover (21) comprises a cover plate (211) and four baffles (212) which are annularly arranged on the edge of the cover plate and are vertical to the cover plate, the bottom end of one baffle is hinged to the cutting table through a hinge, two ends of the reinforcing rod are respectively connected with the two baffles which are bilaterally symmetrical, and one end of the reinforcing rod penetrates through one baffle; the lifting device (4) comprises a guide piece (41) arranged on the cutting table, a movable piece (42) matched with the guide piece (41) and a second driving piece (43) used for driving the movable piece (42) to move up and down; the cutting component (3) is arranged on the moving piece (42), the guide piece (41) is two guide rails vertically arranged on the cutting table, and the movable plate is provided with a sliding block matched with the two guide rails;
deburring: removing burrs on the surface of a workpiece blank by a file, and removing burr scraps adhered to the surface of the workpiece by spraying the workpiece by an air gun;
and (3) air tightness detection: detecting the air tightness of the workpiece by adopting air tightness detection equipment, continuously processing qualified products, and screening out air leakage products; the air tightness detection device comprises a support (81), a water containing tank (82) which is arranged on the support (81) and can move up and down, and a supporting platform (83) which is arranged above the water containing tank (82); the supporting platform (83) is provided with two groups of working platforms (84) and a pressing part (85), wherein one group of working platforms (84) is provided with a first placing seat (86) and a first air inlet assembly, and the other group of working platforms (84) is provided with a second placing seat (87) and a second air inlet assembly;
shot blasting: performing surface shot blasting treatment on the dried workpiece by using a shot blasting machine to obtain a finished product after shot blasting is finished; the shot blasting machine adopts 4mm stainless steel shots to perform surface shot blasting treatment on the dried workpiece, wherein the shot blasting speed is controlled at 120 nds, and the shot blasting time is controlled at 15 min.
CN201910919728.7A 2018-03-22 2018-03-22 Production process based on automatic machining of automobile parts Active CN110625339B (en)

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