CN102975014A - Steel ball assembly method - Google Patents
Steel ball assembly method Download PDFInfo
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- CN102975014A CN102975014A CN2012103196607A CN201210319660A CN102975014A CN 102975014 A CN102975014 A CN 102975014A CN 2012103196607 A CN2012103196607 A CN 2012103196607A CN 201210319660 A CN201210319660 A CN 201210319660A CN 102975014 A CN102975014 A CN 102975014A
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Abstract
The invention discloses a steel ball assembly method which comprises a workbench (1), a cylinder (2), a steel ball (3), a blowing rate switch main body (4) and a power switch (5). The steel ball assembly method is characterized by including that the steel ball (3) is placed in a slide way (6) of the workbench (1); the power switch (5) is on; a solenoid valve (21) on the cylinder (2) is powered on; a piston rod (22) of the cylinder (2) extends out to push the steel ball (3) to move along the slide way (6); a rotating shaft (41) of the blowing rate switch main body (4) is pressed down by hand; the steel ball (3) is assembled in place; the piston rod (22) retracts at last; and the blowing rate switch main body (4) is taken down. Through combination and innovation of the workbench, the cylinder and the structural relation between the workbench and the cylinder, an assembly device with the steel ball assembly method which is high in production efficiency and low in cost is provided, and the quality of a blowing rate switch after assembly is quite high.
Description
Technical field:
The present invention relates to the mounting technology field of switch, relate in particular a kind of steel ball assembly method of automobile quantity switch of air.
Background technology:
Original automobile quantity switch of air carries out the steel ball assembling work according to manual mode.Job Operations difficulty relatively because steel ball all will be installed in the both sides of quantity switch of air main body, easily causes steel ball to eject like this, and steel ball is fallen on the ground, causes stainedly, and production efficiency is low, and the quality of product also is difficult to guarantee.And the operator of hand assembled need to be through for a long time training could be on duty, and labour cost is high.This has brought great difficulty to people, and present existing general steel ball assembly method and equipment thereof do not have yet and can effectively address this problem.Chinese patent Granted publication CN 201376183 Y for example, at on 01 06th, 2010 Granted publication day, the name of innovation and creation is called a kind of automatic steel ball lock core assembling device, this application case discloses a kind of assembling device of steel ball, by the even transmission of little vibrator and the acting in conjunction of magnet plunger suction, need not manually carry out complicated operation, just steel ball is sent in watt cover, improved assembly quality, reduced labour intensity and production cost, but the magnet plunger suction of this application case is little, be difficult to make steel ball to be seated, and the shake DeGrain of little vibrator, efficient is low, is not suitable for the steel ball assembling of quantity switch of air.Chinese patent application publication No. CN 102332598 A and for example, at on 01 25th, 2012 Shen Qing Publication day, the name of innovation and creation is called full-automatic steel ball and the upper assembling formation screws equipment beaten based on the CCD location, this application case discloses a kind of full-automatic equipment of playing steel ball, beat the combined innovation of steel ball mechanism by logistics drawstring and CCD location, realized that steel ball separates with the full-automation of battery case, assembling and detection, efficiently solve the no marking of general steel ball assembly equipment, beat more, steel ball is squeezed into the problem of battery case inside etc., but this application case needs ccd image sensor, servo-operated mechanism and Hall components and parts etc., cost is high, and the equipment installation is inconvenient, is not suitable for the steel ball assembling of quantity switch of air.The present invention is by the combined innovation of ram head and forcing press, provides that a kind of easy construction, bearing capacity are strong, superior in quality cylinder pile construction method after the moulding.
Summary of the invention:
The present invention solves the production efficiency height that steel ball assembly method general in the prior art does not have effectively to solve the assembling steel ball, labour intensity is low, cost is low and assembling finish after the superior in quality problem of quantity switch of air, a kind of assembly method of steel ball is provided, combined innovation by workbench, cylinder and structural relation thereof, realize that this steel ball assembly method and assembly equipment thereof are simple and practical, production efficiency is high, and quantity switch of air was superior in quality after the low and assembling of cost was finished.
In order to solve above-mentioned ubiquitous technical problem, the present invention takes following technical proposals: a kind of assembly method of steel ball, comprise workbench, cylinder, steel ball, quantity switch of air main body and power switch, it is characterized in that, described assembly method is: first all parts are installed on the workbench, and finish debugging work; After steel ball being put on the slideway of workbench, restart power switch, connect the magnetic valve on the cylinder; Then the piston rod of cylinder stretches out, and promotes steel ball and move along slideway, until steel ball is pushed into the quantity switch of air main body; The then rotating shaft of manual depression quantity switch of air main body, steel ball is seated; Last magnetic valve receives signal again, and piston rod is retracted, and takes off the quantity switch of air main body, has just finished the steel ball assembling of quantity switch of air main body.
Workbench, for the assembling of steel ball provides operating platform, also the installation for each parts provides stably mounting platform; Cylinder provides direct driving force for steel ball slips into the quantity switch of air main body; Rotating shaft in the process that manually presses down, guarantees that quantity switch of air main center is not offset; Debugging work reduces the destabilizing factor that occurs in the steel ball assembling process, guarantees the normal operation in the working time.In the assembly method of this steel ball, four steps that only have steel ball to put into slideway, to start power supply, press down and take off the quantity switch of air main body need manually-operated, compare with the assembly method of original manual mode, production efficiency improves greatly, alleviates artificial labour intensity, in assembling process, steel ball can not drop, and product quality is guaranteed, and artificial needs of short duration training to start to work, reduce the training time, reduce cost.
Preferably, described a plurality of steel balls are placed on first in the funnel, fall on the slideway again.Simultaneously a plurality of steel balls are put into funnel, and only have a steel ball to be used at every turn, reduce the operation of manually putting steel ball, further reduce labour intensity.
Preferably, the lower end of described rotating shaft is provided with travel switch, and in the process of manual depression rotating shaft, described travel switch conducting, and signal is transported to magnetic valve is retracted the piston rod of cylinder and resetted.The interlock that resets of the rotating shaft of manual depression quantity switch of air and cylinder piston rod is synchronous, reduce the off time between them, further enhance productivity.
Use a kind of semi-automatic steel ball assembly equipment of above-mentioned steel ball assembly method, comprise workbench, cylinder, steel ball, quantity switch of air main body and power switch, it is characterized in that, the groove that described workbench is provided with the slideway that is complementary with steel ball, is complementary with the quantity switch of air main body, rotating shaft and the workbench of described quantity switch of air main body are fastenedly connected, both sides at groove, described cylinder is fixedly connected with by the first bolt respectively with workbench, piston rod and the slideway of described cylinder are complementary, the magnetic valve on the described cylinder and power switch interlock.
When mounted, first rotating shaft is fixed in the groove of workbench, and the quantity switch of air main body put into groove, then by the first bolt cylinder is fixed on the workbench respectively at the two ends of workbench, so that the center line of piston rod is lucky and the slideway center line is overlapping, turn on the electricity again and power line, after inspection is errorless, just installation, and this semi-automatic steel ball assembly equipment debugged.In when debugging, needn't put into steel ball, just can use under the no problem condition of dimensional fits between each parts and circuit confirming.
Preferably, described semi-automatic steel ball assembly equipment also comprises the first base, described the first base is fixedly connected with by the second bolt with workbench, be provided with axis hole, support spring and limited block in described the first base, described limited block and axis hole are complementary, one end of described support spring is fixedly connected with the axis hole bottom, and the other end links to each other with limited block, and described limited block is threaded with rotating shaft.The first base is so that this semi-automatic steel ball assembly equipment has more stable workbench; This of rotating shaft and workbench kind is fastenedly connected mode, and be simple in structure, and installation and removal are convenient.
Preferably, described support spring one side is provided with travel switch, and the magnetic valve of described travel switch and cylinder passes through relay linkage.The interlock that resets of the rotating shaft of manual depression quantity switch of air and cylinder piston rod is synchronous, reduce the off time between them, further enhance productivity.
Preferably, in the both sides of groove, described workbench is respectively equipped with the second base, and described the second base is fixedly connected with the assembly of slideway.Workbench and slide assemblies are divided into two parts, production and easy to process.
Preferably, described assembly is provided with funnel, and the tube connector on the described funnel is threaded with assembly, is connected with slideway.A plurality of steel balls are put into funnel, and only have a steel ball to be used at every turn, reduce the operation of manually putting steel ball, further reduce labour intensity; When not using, the funnel convenient disassembly.
Preferably, one side of described assembly is provided with locating piece, be provided with retainer spring in the described locating piece, the end of retainer spring is provided with place kick, the center of described place kick is to the distance at workbench center, center than the steel ball that falls into the funnel tube connector is little to the distance at workbench center, and the difference of described distance is less than the diameter of steel ball.Place kick before this semi-automatic steel ball assembly equipment does not operate, prevents that steel ball from dropping out forward; The difference of distance after this semi-automatic steel ball assembly equipment running, guarantees that steel ball can only be withdrawed from one at every turn less than the diameter of steel ball.
Preferably, described semi-automatic steel ball assembly equipment also comprises connecting rod, and described connecting rod links to each other by connector with the piston rod of cylinder, be complementary with slideway, described connecting rod is provided with buffer spring, and described buffer spring one end links to each other with connector, and the other end links to each other with assembly.By connecting rod, avoid the direct effect of piston rod and steel ball, when long-term the use, prevent that piston rod length from shortening and steel ball can't be pushed into the destination; Buffer spring plays cushioning effect, further prolongs the service life of cylinder.
Owing to take above-mentioned technical scheme, the assembly method of a kind of steel ball provided by the invention and semi-automatic steel ball assembly equipment thereof, its beneficial effect is very obvious: assembly method is practical, assembly equipment is simple in structure, combined innovation by workbench, cylinder and structural relation thereof, provide a kind of production efficiency high, labour intensity is low, cost is low and assembling finish after the superior in quality steel ball assembly method of quantity switch of air.
Description of drawings:
Accompanying drawing 1 is perspective view of the present invention;
Accompanying drawing 2 is front view of the present invention;
Accompanying drawing 3 is top view of the present invention;
Accompanying drawing 4 for the A-A of accompanying drawing 3 of the present invention to schematic diagram;
Accompanying drawing 5 for the B of accompanying drawing 4 of the present invention to enlarged drawing;
Accompanying drawing 6 for the C of accompanying drawing 4 of the present invention to enlarged drawing;
Accompanying drawing 7 for the D of accompanying drawing 4 of the present invention to enlarged drawing;
Accompanying drawing 8 for the E of accompanying drawing 5 of the present invention to enlarged drawing;
Accompanying drawing 9 for the F of accompanying drawing 6 of the present invention to enlarged drawing;
Accompanying drawing 10 is electrical schematic diagram of the present invention.
In figure: workbench 1 groove 11 first bolt 12 second base 13 cylinder 2 magnetic valve 21 piston rod 22 relay 23 connecting rod 24 connector 25 buffer spring 26 steel ball 3 quantity switch of air main body 4 rotating shaft 41 power switch 5 slideway 6 funnel 61 assembly 62 tube connector 63 locating piece 64 retainer spring 65 place kick 66 first base 7 travel switch 71 second bolt 72 axis hole 73 support spring 74 limited blocks 75.
The specific embodiment:
Consult accompanying drawing, the present invention be described in further detail:
Embodiment one: by reference to the accompanying drawings 1, and a kind of assembly method of steel ball comprises workbench 1, cylinder 2, steel ball 3, quantity switch of air main body 4 and power switch 5, assembly method is: first all parts are installed on the workbench 1, and finish debugging work; After steel ball 3 being put on the slideway 6 of workbench 1, restart power switch 5, connect the magnetic valve 21 on the cylinder 2; Then the piston rod 22 of cylinder 2 stretches out, and promotes steel ball 3 and move along slideway 6, until steel ball 3 is pushed into quantity switch of air main body 4; The then rotating shaft 41 of manual depression quantity switch of air main body 4, steel ball 3 is seated; Last magnetic valve 21 receives signal again, and piston rod 22 is retracted, and takes off quantity switch of air main body 4, has just finished the steel ball assembling of quantity switch of air main body 4.
Embodiment two: by reference to the accompanying drawings 1,2,3,10, a kind of assembly method of steel ball, comprise workbench 1, cylinder 2, steel ball 3, quantity switch of air main body 4 and power switch 5, assembly method is: first all parts are installed on the workbench 1, and finish debugging work; A plurality of steel balls 3 are placed on first in the funnel 61 first, fall on the slideway 6 again, then start power switch 5, connect the magnetic valve 21 on the cylinder 2; Then the piston rod 22 of cylinder 2 stretches out, and promotes steel ball 3 and move along slideway 6, until steel ball 3 is pushed into quantity switch of air main body 4; The afterwards rotating shaft 41 of manual depression quantity switch of air main body 4, steel ball 3 is seated; Simultaneously, also so that travel switch 71 conductings of rotating shaft 41 lower ends, and signal is transported to magnetic valve 21, the piston rod 22 of cylinder 2 is slowly retracted, until piston rod 22 is retracted when resetting fully, the action that stops to press down is taken off the quantity switch of air main body and is got final product.
Embodiment three, by reference to the accompanying drawings 1,3, a kind of semi-automatic steel ball assembly equipment, comprise workbench 1, two cylinders 2, steel ball 3, quantity switch of air main body 4 and power switches 5, the groove 11 that workbench 1 is provided with the slideway 6 that is complementary with steel ball 3, is complementary with quantity switch of air main body 4, rotating shaft 41 and the workbench 1 of quantity switch of air main body 4 are fastenedly connected, both sides at groove 11, cylinder 2 is fixedly connected with by the first bolt 12 respectively with workbench 1, piston rod 22 and the slideway 6 of cylinder 2 are complementary, the magnetic valve 21 on the cylinder 2 and power switch 5 interlocks.
When mounted, first rotating shaft is fixed in the groove of workbench, and the quantity switch of air main body put into groove, then by the first bolt cylinder is fixed on the workbench respectively at the two ends of workbench, so that the center line of piston rod is lucky and the slideway center line is overlapping, turn on the electricity again and power line, after inspection is errorless, just installation, and this semi-automatic steel ball assembly equipment debugged.In when debugging, needn't put into steel ball, just can use under the no problem condition of dimensional fits between each parts and circuit confirming.
Embodiment four, by reference to the accompanying drawings 1,2,3,4,5,8,10, a kind of semi-automatic steel ball assembly equipment, comprise workbench 1, two cylinders 2, steel ball 3, quantity switch of air main body 4, power switch 5 and the first base 7, workbench 1 is provided with the slideway 6 that is complementary with steel ball 3, the groove 11 that is complementary with quantity switch of air main body 4, rotating shaft 41 and the workbench 1 of quantity switch of air main body 4 are fastenedly connected, both sides at groove 11, cylinder 2 is fixedly connected with by the first bolt 12 respectively with workbench 1, piston rod 22 and the slideway 6 of cylinder 2 are complementary, magnetic valve 21 on the cylinder 2 and power switch 5 interlocks, the first base 7 is fixedly connected with by the second bolt 72 with workbench 1, be provided with axis hole 73 in the first base 7, support spring 74 and limited block 75, limited block 75 is complementary with axis hole 73, one end of support spring 74 is fixedly connected with axis hole 73 bottoms, the other end links to each other with limited block 75, limited block 75 is threaded with rotating shaft 41, support spring 74 1 sides are provided with travel switch 71, and travel switch 71 links by relay 23 with the magnetic valve 21 of cylinder 2.
When mounted, first support spring is fixed in the axis hole of the first base, and the screw thread of limited block and rotating shaft tightened, upper end with limited block and support spring fixes afterwards, and travel switch linked to each other with support spring, again the bottom of rotating shaft from workbench penetrated, pass to groove, then by the second bolt so that the first base is fixedly connected with workbench, respectively two cylinders are fixed on the two ends of workbench by the first bolt so that the center line of piston rod just and the slideway center line overlapping, turn on the electricity again and power line, check errorless after, just installation, and this semi-automatic steel ball assembly equipment debugged.When debugging, first the quantity switch of air main body is put into groove, needn't put into steel ball this moment; In the process of trial run, confirm just can use under the no problem condition of dimensional fits between each parts and circuit.
Embodiment five, by reference to the accompanying drawings 1,2,3,4,5,6,7,8,9,10, a kind of semi-automatic steel ball assembly equipment, comprise workbench 1, two cylinders 2, steel ball 3, quantity switch of air main body 4, power switch 5, the first base 7 and connecting rod 24, workbench 1 is provided with the slideway 6 that is complementary with steel ball 3, the groove 11 that is complementary with quantity switch of air main body 4, rotating shaft 41 and the workbench 1 of quantity switch of air main body 4 are fastenedly connected, both sides at groove 11, cylinder 2 is fixedly connected with by the first bolt 12 respectively with workbench 1, piston rod 22 and the slideway 6 of cylinder 2 are complementary, magnetic valve 21 on the cylinder 2 and power switch 5 interlocks, the first base 7 is fixedly connected with by the second bolt 72 with workbench 1, be provided with axis hole 73 in the first base 7, support spring 74 and limited block 75, limited block 75 is complementary with axis hole 73, one end of support spring 74 is fixedly connected with axis hole 73 bottoms, the other end links to each other with limited block 75, limited block 75 is threaded with rotating shaft 41, support spring 74 1 sides are provided with travel switch 71, travel switch 71 links by relay 23 with the magnetic valve 21 of cylinder 2, both sides at groove 11, workbench 1 is respectively equipped with the second base 13, the second base 13 is fixedly connected with the assembly 62 of slideway 6, assembly 62 is provided with funnel 61, tube connector 63 on the funnel 61 is threaded with assembly 62, be connected with slideway 6, one side of assembly 62 is provided with locating piece 64, be provided with retainer spring 65 in the locating piece 64, the end of retainer spring 65 is provided with place kick 66, the center of place kick 66 is to the distance at workbench 1 center, center than the steel ball 3 that falls into tube connector 63 is little to the distance at workbench 1 center, the difference of distance is less than the diameter of steel ball 3, connecting rod 24 links to each other by connector 25 with the piston rod 22 of cylinder 2, be complementary with slideway 6, connecting rod 24 is provided with buffer spring 26, described buffer spring 26 1 ends link to each other with connector 25, and the other end links to each other with assembly 62.
When mounted, first support spring is fixed in the axis hole of the first base, and the screw thread of limited block and rotating shaft tightened, upper end with limited block and support spring fixes afterwards, travel switch and support spring fix, again the bottom of rotating shaft from workbench penetrated, pass to groove, then by the second bolt so that the first base be fixedly connected with workbench, respectively two cylinders are fixed on the two ends of workbench by the first bolt, then on the corresponding position of workbench, the second base is set respectively, and the assembly of slideway is arranged on the upper end of the second base so that the center line of piston rod just and the slideway center line overlapping, load onto respectively locating piece and place kick in the side of assembly again, funnel is loaded onto respectively in upper end at assembly, load onto connecting rod and buffer spring in the end of piston rod, turn on the electricity at last and power line, after inspection is errorless, just installation, and this semi-automatic steel ball assembly equipment debugged.When debugging, first the quantity switch of air main body is put into groove, needn't put into steel ball this moment; In the process of trial run, confirm just can use under the no problem condition of dimensional fits between each parts and circuit.
Above-described five specific embodiments are described in detail the present invention.Used specific embodiment herein principle of the present invention and embodiment are set forth, the explanation of embodiment just is used for helping to understand core concept of the present invention.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from core concept of the present invention; can also carry out some modifications to the present invention; carry out some modifications or combination such as the parameter of cylinder and various version, the shape facility of connecting rod, design parameter of travel switch etc., should drop within the protection domain of claim of the present invention.
Claims (10)
1. the assembly method of a steel ball, comprise workbench (1), cylinder (2), steel ball (3), quantity switch of air main body (4) and power switch (5), it is characterized in that described assembly method is: first all parts are installed on the workbench (1), and finish debugging work; With steel ball (3) put into the slideway (6) of workbench (1) upper after, restart power switch (5), connect the magnetic valve (21) on the cylinder (2); Then the piston rod (22) of cylinder (2) stretches out, and promotes steel ball (3) along slideway (6) motion, until steel ball (3) is pushed into quantity switch of air main body (4); The then rotating shaft (41) of manual depression quantity switch of air main body (4), steel ball (3) is seated; Last magnetic valve (21) receives signal again, and piston rod (22) is retracted, and takes off quantity switch of air main body (4), has just finished the steel ball assembling of quantity switch of air main body (4).
2. the assembly method of a kind of steel ball according to claim 1 is characterized in that, described a plurality of steel balls (3) are placed on first in the funnel (61), falls on the slideway (6) again.
3. the assembly method of a kind of steel ball according to claim 1, it is characterized in that, the lower end of described rotating shaft (41) is provided with travel switch (71), in the process of manual depression rotating shaft (41), described travel switch (71) conducting, and signal is transported to magnetic valve (21), the piston rod (22) of cylinder (2) is retracted reset.
4. a kind of semi-automatic steel ball assembly equipment of described steel ball assembly method according to claim 1, comprise workbench (1), cylinder (2), steel ball (3), quantity switch of air main body (4) and power switch (5), it is characterized in that, described workbench (1) is provided with the slideway (6) that is complementary with steel ball (3), the groove (11) that is complementary with quantity switch of air main body (4), the rotating shaft (41) of described quantity switch of air main body (4) is fastenedly connected with workbench (1), both sides in groove (11), described cylinder (2) is fixedly connected with by the first bolt (12) respectively with workbench (1), the piston rod (22) of described cylinder (2) is complementary with slideway (6), the magnetic valve (21) on the described cylinder (2) and power switch (5) interlock.
5. a kind of semi-automatic steel ball assembly equipment according to claim 4, it is characterized in that, described semi-automatic steel ball assembly equipment also comprises the first base (7), described the first base (7) is fixedly connected with by the second bolt (72) with workbench (1), be provided with axis hole (73) in described the first base (7), support spring (74) and limited block (75), described limited block (75) is complementary with axis hole (73), one end of described support spring (74) is fixedly connected with axis hole (73) bottom, the other end links to each other with limited block (75), and described limited block (75) is threaded with rotating shaft (41).
6. a kind of semi-automatic steel ball assembly equipment according to claim 5, it is characterized in that, described support spring (74) one sides are provided with travel switch (71), and described travel switch (71) links by relay (23) with the magnetic valve (21) of cylinder (2).
7. a kind of semi-automatic steel ball assembly equipment according to claim 4, it is characterized in that, both sides in groove (11), described workbench (1) is respectively equipped with the second base (13), and described the second base (13) is fixedly connected with the assembly (62) of slideway (6).
8. a kind of semi-automatic steel ball assembly equipment according to claim 7 is characterized in that described assembly (62) is provided with funnel (61), and the tube connector (63) on the described funnel (61) is threaded with assembly (62), is connected with slideway (6).
9. a kind of semi-automatic steel ball assembly equipment according to claim 7, it is characterized in that, one side of described assembly (62) is provided with locating piece (64), be provided with retainer spring (65) in the described locating piece (64), the end of retainer spring (65) is provided with place kick (66), the center of described place kick (66) is to the distance at workbench (1) center, center than the steel ball that falls into tube connector (63) (3) is little to the distance at workbench (1) center, and the difference of described distance is less than the diameter of steel ball (3).
10. a kind of semi-automatic steel ball assembly equipment according to claim 4, it is characterized in that, described semi-automatic steel ball assembly equipment also comprises connecting rod (24), described connecting rod (24) links to each other by connector (25) with the piston rod (22) of cylinder (2), be complementary with slideway (6), described connecting rod (24) is provided with buffer spring (26), and described buffer spring (26) one ends link to each other with connector (25), and the other end links to each other with assembly (62).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210319660.7A CN102975014B (en) | 2012-09-03 | 2012-09-03 | Steel ball assembly method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210319660.7A CN102975014B (en) | 2012-09-03 | 2012-09-03 | Steel ball assembly method |
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| CN102975014A true CN102975014A (en) | 2013-03-20 |
| CN102975014B CN102975014B (en) | 2015-05-13 |
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| CN201210319660.7A Expired - Fee Related CN102975014B (en) | 2012-09-03 | 2012-09-03 | Steel ball assembly method |
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| CN104786058A (en) * | 2015-04-21 | 2015-07-22 | 苏州泰克诺机电有限公司 | Slide rail steel ball assembly machine and assembly method thereof |
| CN105149239A (en) * | 2015-09-08 | 2015-12-16 | 宁国市南方耐磨材料有限公司 | Wear-resistant steel ball screening device |
| CN106584067A (en) * | 2017-02-28 | 2017-04-26 | 上海应用技术大学 | Full-automatic assembling equipment for steel ball of guide pillar |
| CN106938386A (en) * | 2017-04-21 | 2017-07-11 | 福州六和机械有限公司 | A kind of pressure release valve opening steel ball spring press fitting device and its method of work |
| CN107052790A (en) * | 2017-04-21 | 2017-08-18 | 福州六和机械有限公司 | A kind of aluminium pump cover steel ball spring press-in device and its method of work |
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| CN106938386B (en) * | 2017-04-21 | 2023-04-14 | 福州六和机械有限公司 | Pressure relief valve hole steel ball spring press-fit device and working method thereof |
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| CN102975014B (en) | 2015-05-13 |
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