Special equipment for micro-arc oxidation process
Technical Field
The invention belongs to the technical field of micro-arc oxidation process equipment, and particularly relates to special equipment for a micro-arc oxidation process.
Background
The cylinder block is a core part of an engine, the working environment of the cylinder block is quite severe, and the inner wall of the cylinder block needs to be strengthened because the cylinder block is made of aluminum alloy. At present, the most common surface treatment process for the cylinder body is hard chromium plating, but with the push of the environmental protection concept, the disadvantage that the process is not friendly to the environment is highlighted. The micro-arc oxidation process is a novel green surface strengthening process, so that the problems are well solved, but the existing process has few and few devices, only a small number of parts can be processed at each time, most parts need to be manually clamped, and batch processing cannot be realized.
Disclosure of Invention
The invention aims to provide special equipment for a micro-arc oxidation process, which solves the problems of complex clamping and low efficiency in the micro-arc oxidation process in the prior art.
The technical scheme adopted by the invention is that the special equipment for the micro-arc oxidation process comprises a liquid return tank provided with a liquid return tank cover plate; the rear side of the liquid return groove cover plate is fixedly connected with a main body box, and the upper surface of the liquid return groove cover plate is provided with two pipeline ports b in parallel; the upper side of the pipeline opening b is fixedly connected with a chuck, and the lower side of the pipeline opening b is communicated with one end of the pipeline b; liquid return valves are arranged on the two pipelines b; the clamp of the workpiece to be processed can be clamped into the chuck; the upper part of the front surface of the main body box is also provided with a connecting piece b; the inner bottom surface of the main box is fixedly connected with the fixed end of the cylinder, and the free end of the cylinder extends out of the upper surface of the main box and is horizontally and fixedly connected with the platform; the upper surface of the main box is fixedly connected with one end of a plurality of guide rods, the guide rods penetrate through the platform, and the other end of the guide rods is fixed on a horizontally arranged fixed plate; the front part of the platform is provided with two pipeline ports a in parallel, and the pipeline a penetrates through the pipeline ports and is fixed on the platform; the bottom ends of the two pipelines a are fixedly connected with the end parts of the anode sheets; the top ends of the two pipelines a are fixedly connected to the lower surface of the liquid containing groove; a cathode plate is horizontally and fixedly connected to the upper surface of the liquid containing groove, cathode rods are vertically and fixedly connected to two ends of the cathode plate, and the cathode rods penetrate through the liquid containing groove and the pipeline a and are positioned in the center of the pipeline a; the cathode rod can also penetrate through the clamping head and extend into the pipeline b; the positive electrode of the power supply is connected with the anode sheet through a lead a; the cathode sheet is connected with the negative electrode of the power supply through a lead b; the liquid containing groove is also provided with a liquid inlet which is communicated with one end of the liquid inlet pipe; the other end of the liquid inlet pipe is connected with an electrolyte source.
The invention is also characterized in that:
a liquid outlet is also formed on the liquid containing groove and communicated with one end of the liquid outlet pipe a; the other end of the liquid outlet pipe a is sleeved with the upper half part of the connecting valve; the liquid outlet valve also comprises a liquid outlet pipe b, and one end of the liquid outlet pipe b is sleeved with the lower half part of the connecting valve; the other end of the liquid outlet pipe b is communicated with a liquid return groove.
One side of the clamping head is provided with a connecting piece a.
The pipeline a and the anode sheet are connected in a mode that a circle of bulges are fixedly connected to the outer wall of the bottom of the pipeline a; two ends of the anode sheet are annular components; a plurality of bolt holes are formed in the bulge and the annular component; the annular component is sleeved at the bottom of the pipeline a, and the bolt sequentially penetrates through the bulge and the annular component and is fastened and connected with the annular component through a nut matched with the annular component.
The part of the pipeline a above the platform is funnel-shaped.
The cathode sheet and the cathode rod are connected in a mode that two ends of the cathode sheet are annular components; the diameter of the top of the cathode rod is smaller than that of the rest part and is provided with an external thread; the circular ring-shaped component is sleeved on the top of the cathode rod and is tightly connected with the external thread through a nut and a gasket.
The guide rod and the fixed plate are connected in a mode that guide holes are formed in four corners of the fixed plate; the top of the guide rod is provided with an external thread; the top of the guide rod penetrates through the guide hole and is fixedly connected with the external thread through a nut; the nut is positioned on the upper side of the fixing plate.
The invention has the beneficial effects that:
(1) reliable performance, simple structure, environmental protection and greenization.
(2) The clamping and the micro-arc oxidation are integrated, so that the micro-arc oxidation treatment is simple and easy to operate.
(3) The consistency of the micro-arc oxidation process of the workpiece can be ensured;
(4) the fixture matched with the special equipment for the micro-arc oxidation process can be detached from the special equipment for the micro-arc oxidation process, so that the workpiece can be installed and then returned to the special equipment for the micro-arc oxidation process, the process is shortened, the time is obviously saved for mass production, and the production cost is reduced;
(5) when different workpieces need to be subjected to micro-arc oxidation treatment, only the corresponding matched clamp needs to be replaced, and the process is simple.
Drawings
FIG. 1 is a schematic structural diagram of the special equipment for the micro-arc oxidation process of the invention;
FIG. 2 is a schematic structural diagram of the special equipment for the micro-arc oxidation process of the invention;
FIG. 3 is a partial front view of the special apparatus for micro-arc oxidation process of the present invention;
FIG. 4 is a schematic structural diagram of a connecting member b in the special apparatus for micro-arc oxidation process of the present invention;
FIG. 5 is a schematic view showing the flow direction of current in the apparatus for micro-arc oxidation process according to the present invention;
FIG. 6 is a schematic structural diagram of a fixture used with the special equipment for the micro-arc oxidation process of the present invention;
FIG. 7 is a schematic structural diagram of a substrate in a fixture matched with the special equipment for the micro-arc oxidation process of the invention;
FIG. 8 is a schematic structural diagram of a top liner set in a fixture of the present invention;
FIG. 9 is a schematic structural diagram of an intermediate layer bushing set in a fixture matched with the special equipment for the micro-arc oxidation process of the invention;
FIG. 10 is a schematic view of the bottom layer lining set matched with the special equipment for micro-arc oxidation process of the present invention;
FIG. 11 is a schematic structural diagram of a workpiece to be clamped by the fixture matched with the special equipment for the micro-arc oxidation process.
In the figure, 1, a liquid return groove cover plate, 2, a liquid return groove, 3, a main body box, 4, a clamping head, 6, an air cylinder, 7, a platform, 8, a guide rod, 9, a fixing plate, 10, a pipeline port a, 11, a pipeline a, 12, an anode sheet, 13, a liquid containing groove, 14, a cathode sheet, 15, a cathode rod, 16, a lead wire a, 17, a liquid inlet, 18, a liquid inlet pipe, 19, a liquid outlet, 20, a liquid outlet pipe a, 21, a pipeline port b, 22, a pipeline b, 23, a liquid return valve, 24, a connecting piece a, 25, a connecting valve, 26, a liquid outlet pipe b, 27, a connecting piece b, 28 and a fixing plate a; 29. a rotating member, 30, a screw;
31. the machining device comprises a base plate, a lug plate, a guide upright post, a top layer lining set, a middle layer lining set, a bottom layer lining set, a rotating block, a column hole d, a square groove, a positioning block, a groove e, a groove 44, a workpiece to be machined, a wire b, a positioning block and a guide post, wherein the lug plate is 32;
401. top boss, 402, mounting hole a, 403, top bushing, 404, cross nut a, 405, sealing washer a, 406, post hole a, 407, bolt a, 408, elastic conductive sheet a;
501. the middle layer boss 502, the mounting hole b 503, the middle layer bushing. 504. Cross nut b, 505, sealing washer b, 506, upright post hole b, 507, upright post bushing b, 508, groove b, 509, washer b, 510, bolt b, 511, elastic conductive sheet b;
601. the bottom boss 602, the mounting hole c, 603, the bottom bushing 604, the cross nut c, 605, the sealing washer c, 606, the post hole c, 607, the post bushing c, 608, the groove c, 609 and the washer c.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, a special device for micro-arc oxidation process comprises a liquid return tank 2 provided with a liquid return tank cover plate 1; the rear side of the liquid return groove cover plate 1 is fixedly connected with a main body box 3, and the upper surface of the liquid return groove cover plate 1 is provided with two pipeline ports b21 in parallel; the upper side of the pipeline port b21 is fixedly connected with a chuck 4; the chuck 4 is a component with a circular cross section, and a connecting piece a24 which is tightly connected with the clamp is arranged on one side of the chuck 4; the lower side of the pipeline port b21 is communicated with one end of a pipeline b 22; liquid return valves 23 are arranged on the two pipelines b 22; the clamp of the workpiece to be processed can be clamped into the chuck 4; the upper part of the front surface of the main body box 3 is also provided with a connecting piece b27 (shown in figure 4) connected with the clamp; the connecting piece b27 comprises a fixing plate a28, a rotating piece 29 and a screw 30, the upper part of the front surface of the main body box 3 is provided with a screw hole a, the middle part of the fixing plate a28 is provided with a screw hole b, the middle part of the rotating piece 29 is provided with a screw hole c, and the distance from the rear surface of the rotating piece 29 to the front surface of the main body box 3 is consistent with the thickness of the base plate 31; the distance between the two ear panels 32 corresponds to the width of the fastening panel a 28; the screw 30 passes through the screw hole c, the screw hole b, and the screw hole a in this order to fasten and connect the rotary member 29, the fixing plate a28, and the body case 3. The inner bottom surface of the main body box 3 is fixedly connected with the fixed end of the cylinder 6, and the free end of the cylinder 6 extends out of the upper surface of the main body box 3 and is horizontally and fixedly connected with the platform 7; four corners of the upper surface of the main box 3 are fixedly connected with one ends of guide rods 8, the guide rods 8 penetrate through the platform 7, and the other ends of the guide rods are fixed on a fixing plate 9 which is horizontally arranged; the guide rod 8 and the fixed plate 9 are connected in a manner that guide holes are formed in four corners of the fixed plate 9; the top of the guide rod 8 is provided with an external thread; the top of the guide rod 8 penetrates through the guide hole and is fixedly connected with the external thread through a nut; the nut is located on the upper side of the fixing plate 9. The front part of the platform 7 is provided with two pipeline ports a10 in parallel, and a pipeline a11 penetrates through the pipeline port a10 and is fixed on the platform 7; the bottom ends of the two pipelines a11 are fixedly connected with the end parts of the anode sheets 12 respectively; the pipeline a11 and the anode sheet 12 are connected in a way that a circle of bulges are fixedly connected with the outer wall of the bottom of the pipeline a 11; two ends of the anode sheet 12 are annular components; a plurality of bolt holes are formed in the bulge and the annular component; the annular member is sleeved at the bottom of the pipeline a11, and the bolt sequentially penetrates through the bulge and the annular member and is fastened and connected with the annular member through a nut matched with the annular member. The top ends of the two pipelines a11 are fixedly connected with the lower surface of the liquid containing groove 13; the portion of conduit a11 above platform 7 is funnel-shaped. A cathode plate 14 is horizontally and fixedly connected to the upper surface of the liquid containing groove 13, cathode rods 15 are vertically and fixedly connected to both ends of the cathode plate 14, and the cathode rods 15 penetrate through the liquid containing groove 13 and the pipeline a11 and are positioned in the center of the pipeline a 11; the cathode rod 15 can also penetrate through the chuck 4 and extend into the pipeline b 22; the cathode sheet 14 and the cathode rod 15 are connected in a mode that two ends of the cathode sheet 14 are annular components; the diameter of the top of the cathode rod 15 is smaller than that of the rest part and is provided with an external thread; the circular ring-shaped member is sleeved on the top of the cathode rod 15 and is tightly connected with the external thread through a nut and a gasket. The positive electrode of the power supply is connected with the anode sheet 12 through a lead wire a 16; the cathode sheet 14 is connected with the negative electrode of the power supply through a lead b 45; the upper surface of the liquid containing groove 13 is also provided with a liquid inlet 17, and the liquid inlet 17 is communicated with one end of a liquid inlet pipe 18; the other end of the liquid inlet pipe 18 is connected with an electrolyte source. A liquid outlet 19 is also formed in one side of the liquid containing groove 13, and the liquid outlet 19 is communicated with one end of a liquid outlet pipe a 20; the other end of the liquid outlet pipe a20 is sleeved with the upper part of the connecting valve 25; the device also comprises a liquid outlet pipe b26, wherein the lower half part of the valve 25 is sleeved outside one end of the liquid outlet pipe b 26; the other end of the liquid outlet pipe b26 is communicated with the liquid return tank 2.
As shown in fig. 6 and 7, the clamp provided by the invention comprises a substrate 31, wherein a pair of ear plates 32 are fixedly connected in parallel with the middle of the top end of the substrate 31; two pairs of guide columns 33 are vertically fixed on the front surface of the base plate 31; a top layer bush set 34, a plurality of middle layer bush sets 355 and a bottom layer bush set 36 are horizontally arranged between each pair of two guide columns 33 from top to bottom in sequence; the top layer bush set 34 is fixedly connected with the guide upright post 33; the intermediate layer bush set 35 and the bottom layer bush set 36 are slidably connected to the guide column 33; the bottom of each guide upright column 33 is provided with a rotating block 37 with an L-shaped longitudinal section; the horizontal part of the L-shaped rotating block 7 is provided with a stand column hole d38, the guide stand column 33 passes through the stand column hole d38, and the rotating block 37 can rotate or move relative to the guide stand column 33; the bottom end of the base plate 31 is also provided with two square grooves 39, and the square grooves 39 are positioned between each pair of two guide upright posts 33; a plurality of grooves d are also formed below the groove a on the front surface of the substrate 31 in parallel; two pairs of positioning blocks 42 are fixed in each groove d; the two positioning blocks 42 of each pair can be clamped on two sides of the workpiece to be processed.
As shown in fig. 8, a groove a is horizontally formed on the top of the front surface of the substrate 31; the top layer bushing group 34 comprises a top layer boss 401 fixedly connected in the groove a, two workpiece mounting holes a402 to be processed are formed in the top layer boss 401, and a top layer bushing 403 is sleeved in the mounting holes a 402; the top layer bushing 403 is an annular member, the outer diameter of the lower part of the top layer bushing 403 is larger than the inner diameter of the mounting hole a402, the outer diameter of the middle part of the top layer bushing is equal to the inner diameter of the mounting hole a402, the outer diameter of the upper part of the top layer bushing is not larger than the inner diameter of the mounting hole a402, and the upper part of the top; the top layer bushing 403 penetrates through the mounting hole a402 from bottom to top and is fixedly connected with the internal thread of the cross nut a404 through the external thread of the top layer bushing, and the external diameter of the cross nut a404 is larger than the internal diameter of the mounting hole a 402; a nylon sealing gasket a405 is sleeved in the top layer bushing 403; two sides of the two mounting holes a402 of the top-layer boss 401 are both provided with upright post holes a 406; and further comprises elastic conductive sheets a408 fixed on both sides of the mounting hole a402 by bolts a 407.
As shown in fig. 9, the intermediate layer bushing group 45 includes an intermediate layer boss 501 horizontally disposed, a workpiece mounting hole b502 to be processed is formed in the middle of the intermediate layer boss 501, and an intermediate layer bushing 503 is sleeved in the mounting hole b 502; the middle layer bushing 503 is an annular member, the radius of the lower part of the middle layer bushing 503 is larger than the radius of the mounting hole b502, the radius of the middle part of the middle layer bushing 503 is equal to the radius of the mounting hole b502, the radius of the upper part of the middle layer bushing 503 is smaller than the radius of the mounting hole b502, and the upper part of the middle layer bushing 503 is provided; the middle layer bushing 503 passes through the mounting hole b502 from bottom to top and is tightly connected with the internal thread of the cross nut b504 through the external thread; a nylon sealing gasket b505 is sleeved in the middle layer bushing 503; both sides of the mounting hole b502 of the middle-layer boss 501 are provided with upright post holes b 506; an upright post bushing b507 is sleeved in the upright post hole b 506; the upright post bush b507 is an annular component, the outer diameter of the upper part of the upright post bush b507 is larger than the inner diameter of the upright post hole b506, the outer diameter of the rest part of the upright post bush b507 is not larger than the inner diameter of the upright post hole b506, and a circle of groove b508 is formed in the circumferential direction of the lower part of the upright post bush b 507; the upright post bush b507 penetrates through the upright post hole b506 from top to bottom and enables the gasket b509 to be clamped in the groove b508, and the outer diameter of the gasket b509 is larger than the inner diameter of the upright post hole b 506; the guide upright column 33 passes through the upright column hole b506, and the middle-layer boss 501 can move along the guide upright column 33; and an elastic conductive sheet b511 fixed to one side or both sides of the mounting hole b502 by a bolt b 510.
As shown in fig. 10, the bottom layer bushing group 36 includes a horizontally disposed bottom layer boss 601, a workpiece mounting hole c602 to be processed is formed in the middle of the bottom layer boss 601, and a bottom layer bushing 603 is sleeved in the mounting hole c 602; the bottom layer bushing 603 is an annular member, the outer diameter of the upper part of the annular member is larger than the inner diameter of the mounting hole c602, the outer diameter of the upper half part of the middle part is equal to the inner diameter of the mounting hole c602, the outer diameters of the lower half part and the middle part of the middle part are not larger than the inner diameter of the mounting hole c602, and the lower half part of the middle part of the bottom layer; the bottom lining 603 passes through the mounting hole c602 from top to bottom and is tightly connected with the internal thread of the cross nut c604 through the external thread; a nylon sealing gasket c605 is sleeved in the bottom layer bushing 603; both sides of the mounting hole c602 of the bottom layer boss 601 are provided with upright post holes c 606; a column bushing c607 is sleeved in the column hole c 606; the column bushing c607 is an annular member, the outer diameter of the lower part of the column bushing c607 is larger than the inner diameter of the column hole c606, the outer diameter of the rest part of the column bushing c607 is not larger than the inner diameter of the column hole c606, and a circle of groove c608 is circumferentially formed in the upper part of the column bushing c 607; the upright post bushing c607 penetrates through the upright post hole c606 from bottom to top and enables a gasket c609 to be clamped in the groove c608, and the outer diameter of the gasket c609 is larger than the inner diameter of the upright post hole c 606; the guide post 33 passes through the post hole c606 and the base boss 601 is movable along the guide post 33.
The fixing mode of the guide upright column 33 is that the top end of the guide upright column 33 is fixedly connected with a bulge a, and the diameter of the bulge a is larger than that of the upright column hole a 406; two pairs of grooves e43 are horizontally formed in the bottom of the front surface of the base plate 1, a boss is fixedly connected in each groove e43, and each boss is provided with a stand column hole e; the guide upright 33 passes through the upright hole a406, the upright hole b506, the upright hole c606, the upright hole d38 and the upright hole e in sequence; the bottom end of the guide upright column 33 is fixedly connected with a bulge b, and the diameter of the bulge b is larger than that of the upright column hole e.
The working process of the special equipment for the micro-arc oxidation process comprises the following steps:
(1) horizontally placing a clamp matched with the special micro-arc oxidation process equipment on a desktop, inwards arranging the top of the workpiece 44, enabling an outer hole at the top of the workpiece to form concentric fit with an installation hole a402 of a top layer bushing 403 in the clamp matched with the special micro-arc oxidation process equipment, and enabling the side surface of the workpiece 44 to be in contact with a positioning block 42 to limit the axial rotation of the workpiece;
(2) sliding the middle layer bushing group 35 of the fixture matched with the first group of micro-arc oxidation process special equipment to ensure that the mounting hole b502 of the middle layer bushing 503 is concentrically matched with the outer hole at the bottom of the workpiece 44 and the workpiece 44 is completely positioned;
(3) repeating the operations 1 and 2, and continuously finishing the installation of the rest workpieces;
(4) after the last group of workpieces are installed, sliding a bottom lining sleeve group 36 in the fixture matched with the special equipment for the micro-arc oxidation process, and rotating a rotating block 37 to ensure that all parts on the fixture of the micro-arc oxidation process equipment are completely clamped;
(5) starting a cylinder 6 of the special equipment for the micro-arc oxidation process, so that the free end of the cylinder drives a platform 7 to ascend;
(6) installing a clamp matched with the special equipment for the micro-arc oxidation process at a reserved position of the equipment;
(7) the mounting hole c602 of the bottom layer bush set 6 is concentrically matched with the chuck 4; the rotating piece 29 in the rotating connecting piece b27 locks a clamp matched with micro-arc oxidation process equipment;
(8) starting a cylinder 6 of the special equipment for the micro-arc oxidation process to enable the free end of the cylinder to drive a platform 7 to descend, so that an anode sheet 12 is in contact with an elastic conductive sheet 408 in a clamp matched with the special equipment for the micro-arc oxidation process, and the elastic conductive sheet 408 is stressed and then bends downwards to deform to be in contact with a workpiece 44, so that current required by the micro-arc oxidation process flows to the workpiece from the equipment;
(9) opening a switch of an electrolyte feeding pump to enable the electrolyte to enter a liquid inlet 17 from an electrolyte source along a liquid inlet pipe 18, and closing the electrolyte feeding pump after the required volume is achieved in the liquid containing tank 13 to perform micro-arc oxidation treatment;
(10) after the micro-arc oxidation treatment is finished, when the workpiece is disassembled, the power supply is cut off, the liquid return valve 23 is opened to make the electrolyte return to the liquid return tank 2, and then the steps (8) - (1) are reversed.
The special equipment for the micro-arc oxidation process has the advantages that:
(1) reliable performance, simple structure, environmental protection and greenization.
(2) The clamping and the micro-arc oxidation are integrated, so that the micro-arc oxidation treatment is simple and easy to operate.
(3) The consistency of the micro-arc oxidation process of the workpiece can be ensured;
(4) the fixture matched with the special equipment for the micro-arc oxidation process can be detached from the special equipment for the micro-arc oxidation process, so that the workpiece can be installed and then returned to the special equipment for the micro-arc oxidation process, the process is shortened, the time is obviously saved for mass production, and the production cost is reduced;
(5) when different workpieces need to be subjected to micro-arc oxidation treatment, only the corresponding matched clamp needs to be replaced, and the process is simple.