CN103884513B - Automotive rearview mirror fatigue strength reliability testing device - Google Patents
Automotive rearview mirror fatigue strength reliability testing device Download PDFInfo
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- CN103884513B CN103884513B CN201410069135.3A CN201410069135A CN103884513B CN 103884513 B CN103884513 B CN 103884513B CN 201410069135 A CN201410069135 A CN 201410069135A CN 103884513 B CN103884513 B CN 103884513B
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Abstract
The invention relates to an automotive rearview mirror fatigue strength reliability testing device which comprises a machine frame, a control system, a testing system and a clamp system, wherein the control system and the testing system are installed on the machine frame, the clamp system is used for installation of an automotive rearview mirror, the clamp system comprises a support and an installation frame installed on the support, the automotive rearview mirror is installed on the installation frame and is capable of being electrically connected to the control system, the control system controls the clamp system to act, the testing system comprises a tester which is installed on the machine frame and electrically connected to the control system, the tester detects the moving state of the automotive rearview mirror and feeds the moving state of the automotive rearview mirror back to the control system, the installation frame comprises an installation plate, a steering mechanism and a power mechanism, the steering mechanism comprises a cam holder and a cam inner ring, and the cam holder is made of nylon. The automotive rearview mirror fatigue strength reliability testing device is simple in structure, accurate in detection and low in cost and weight.
Description
Technical field
The present invention relates to a kind of testing apparatus, particularly relate to a kind of automobile rearview mirror fatigue strength reliability testing apparatus, belong to technical field of measurement and test.
Background technology
Chinese patent CN202141596U discloses a kind of testing stand for testing comprehensive property of automobile rearview and comprises frame, frame is provided with the clamping workpiece that clamping cylinder is housed, frame is provided with test frame on rear side of clamping workpiece, test frame is provided with functional interface, and functional interface is equipped with test module.Owing to have employed this technical scheme, hardware design have employed modular design, the project detected as required, for different automobile rearview mirrors, allow user on the basis of reference device worktable, select corresponding attachment function module.
Above-mentioned automobile rearview mirror property test platform also has the place of improving: such as complex structure, and project detects simple not, accurate.And the parts of current automobile rearview mirror property test platform are mostly adopt alloy material to make, and density is high, quality weight, adds the total quality of automobile rearview mirror property test platform; And alloy material needs to carry out metalworking technique, add the expense such as manufacturing procedure and process tool equipment, cost is higher, and the manufacturing cycle of product is longer.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of structure simple, detect accurately, cost and the lower automobile rearview mirror fatigue strength reliability testing apparatus of weight.
Object of the present invention realizes by following technical proposal: a kind of automobile rearview mirror fatigue strength reliability testing apparatus, comprise frame, the chucking appliance system of rack-mounted control system and test macro and installation automobile rearview mirror, described chucking appliance system comprises support and rack-mount erecting frame, automobile rearview mirror to be arranged on erecting frame and can be electrically connected to control system, described control system controls chucking appliance system action, described test macro comprises tester, described tester to be arranged in frame and to be electrically connected to control system, described tester detects the motion state of automobile rearview mirror and feeds back to control system, wherein, described erecting frame comprises installing plate, steering mechanism and actuating unit, and described steering mechanism comprises cam holder and cam inner ring, described cam holder is made up of nylon material, described nylon material is become to be grouped into by following parts by weight: nylon66 fiber: 90-110 part, ABS resin: 15-40 part, glass fibre: 10-40 part, compatilizer: 3-15 part, antioxidant: 0.5-3 part, interface modifier: 0.1-3 part, nucleator: 0.05-1 part.
Nylon is one of maximum, most widely used engineering plastics of output, wherein, the performances such as the intensity of nylon66 fiber (polyhexamethylene adipamide), wearing quality, thermotolerance and against weather are close to even surmounting alloy material, but its proportion only has 1.15g/cm3, much lighter than alloy material, be applicable to very much replacing the cam holder in alloy material production automobile rearview mirror fatigue strength reliability of the present invention testing apparatus.But the water-intake rate of nylon66 fiber is comparatively large, affect the dimensional stability of cam holder to a certain extent, and the impact strength of nylon66 fiber is lower.In order to prepare the more perfect cam holder of performance, the combination property that some components improve nylon66 fiber need be added.
ABS resin is that a kind of intensity is high, good toughness, be easy to thermoplastics type's macromolecular material of machine-shaping.By ABS resin and nylon66 fiber blended, the material impact intensity prepared in conjunction with the advantage of two kinds of polymkeric substance is high, thermal stability is good, resistance to chemical corrosion is good, there is again the dimensional stability more excellent than nylon66 fiber, the soft matte effect in special surface and crystalline material and blended the brought damping of amorphous material and sound absorbing capabilities.But nylon66 fiber is a class crystal type, strong polar polymer, ABS resin is then armorphous, low pole polymkeric substance, the two solubility parameters difference is larger, thermodynamics is incompatible, simply blendedly cause poor mechanical property by because of the reunion of disperse phase and two alternate larger interfacial tensions, so the nylon/ABS material with practical value will be obtained, capacity increasing modifying must be carried out to blend.So present invention adds compatilizer, described compatilizer is one or both in polybutadiene graft maleic anhydride (PB-g-MAH), Research of Grafting Malaic Anhydride Onto Polyethylene (PE-g-MAH), its number-average molecular weight is 2500-4200, and maleic anhydride grafting ratio is 8-12wt%.
In order to improve rigidity and intensity, the water absorptivity of reduction nylon66 fiber and the dimensional stability of raising nylon66 fiber of nylon66 fiber further, the present invention adds glass fibre and strengthens in nylon66 fiber.But the bonding interface of glass fibre and nylon66 fiber is not strong, not easily combines preferably.So, need to add interface modifier in the material, the interface modifier that the present invention adds is γ-phosphinic acid ethyl ester ethyl triethoxy silicane alkane, γ-methyl-phosphonate base diethoxy silane, γ-methyl-phosphonate ethyl triethoxy silicane alkane, gamma-aminopropyl-triethoxy-silane, 3-(methacryloxypropyl) propyl trimethoxy silicane, one or more in vinyl trimethoxy Ethoxysilane.
The present invention also adds nucleator in the material, and the interpolation of nucleator makes nylon66 fiber spherulite size diminish and crystallinity increases, and pulling strengrth and breaking elongation increase.Nucleator of the present invention is one or more in talcum powder, porcelain earth, graphite, silicon dioxide or calcium carbonate, and 1000 mesh sieves crossed by described nucleator.And, add in the present invention as: when talcum powder, calcium carbonate, the water-intake rate of nylon66 fiber reduces about 50%, plays key effect to the dimensional stability of the last cam holder made with this material.Therefore, one or both in nucleator preferably talc powder of the present invention, calcium carbonate.
In addition, the present invention also adds antioxidant in the material, and described antioxidant is one or more in Hinered phenols antioxidant, phosphite ester kind antioxidant, suffocated amine antioxidant.Antioxidant can suppress the oxygen in air to the oxygenolysis of material, improves the reservation that material of the present invention heats rear physical property in aerobic air.
The present invention in an initial condition, chucking appliance system is arranged in frame, automobile rearview mirror to be detected is installed to after on erecting frame, power system is electrically connected to control system, control system controls motor action by the instruction of setting, switch on power, control system sends instruction, chucking appliance system action, automobile rearview mirror carries out up and down or swings, detecting device in test macro detects action ruuning situation and the action frequency of automobile rearview mirror, and feedback data is to control system, when data reach the numerical value set in control system, control system sends and stops action command, test terminates.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, the preparation method of described cam holder comprises the following steps:
S1, take raw material by the constituent of nylon material according to claim 1 and parts by weight thereof, barrel in high-speed injection molding machine is heated to 260-320 DEG C simultaneously, then the above-mentioned raw material taken fully mixed and add in barrel, being heated to molten condition;
S2, the nozzle of the raw material of molten condition through hot flow path to be expelled in the cam holder mould after heating at twice, to obtain cam holder through pressurize, cooling forming, die sinking.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, in the preparation method of described cam holder, in step S2, hot flow path temperature is 230-280 DEG C, mold temperature is 20-90 DEG C, first injection pressure is 8-10MPa, second injection pressure is 6-9MPa, dwell pressure is 7-9MPa, and the dwell time is 6-12s, and cool time is 3-8min.
Hot runner mould makes the plastics of runner and cast gate keep molten condition by the way of heating, has the good and advantage such as to economize in raw materials of high, the shaping plastic part quality of injection moulding efficiency.Adopt high-speed injection molding machine and hot runner mould can prepare the cam holder of better quality.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described installing plate is arranged on support side, described actuating unit is arranged on support opposite side, described steering mechanism installs on a mounting board, described actuating unit is connected to steering mechanism, the driving automobile rearview mirror motion of described steering mechanism.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described cam holder is affixed to installing plate, described cam inner ring is affixed to actuating unit, the radial direction of described cam inner ring is provided with guide rod, described guide rod is provided with flexible member, described flexible member can drive one end of guide rod to be pushed against on cam holder and guide rod can be made to do straight reciprocating motion along the radial direction of cam inner ring, the other end of described guide rod can prop up the dwang that automobile rearview mirror is arranged, described actuating unit can drive cam holder to rotate, and makes guide rod promote dwang motion.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described cam holder is provided with ring part, the inwall of described ring part is provided with arc boss, the top of described guide rod is provided with roller, described roller is pushed against on the inwall of ring part, when arc boss turns to scroll wheel positions, guide rod can be promoted and move along guide rod axis direction and promote dwang and move.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described cam inner ring is provided with annular boss, described boss is provided with mounting hole, in described mounting hole, chuck is installed, described guide rod runs through and is slidably installed on chuck, and described flexible member is set on guide rod and two ends and is resisted against respectively on the end of guide rod and the end of chuck.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described cam inner ring is Flange-shaped Parts, be disposed with installation portion, stage portion and the annular boss be arranged in stage portion, the axis of described mounting hole is evenly distributed on the radial line direction of annular portion and is in same plane, and described installation portion is provided with some fixed orifices, the axis of described fixed orifice and the axis being parallel of cam inner ring, described installing plate is provided with counterbore, and described stage portion and counterbore match.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described actuating unit comprises motor, motor fixing plate, power installing plate and motor fixed leg, described motor fixing plate is connected on motor, described motor fixed leg one end is arranged on motor fixing plate, the other end is arranged on power installing plate, described power installing plate is rack-mount, the output terminal of described motor is connected to steering mechanism, the output terminal of described motor is provided with shaft coupling, described frame is fixed with rotating shaft cover, rotating shaft is provided with in described rotating shaft cover, described rotating shaft one end is connected with shaft coupling, the other end is connected to steering mechanism.
In above-mentioned a kind of automobile rearview mirror fatigue strength reliability testing apparatus, described control system comprises power switch, PLC module and display, described power switch is electrically connected to PLC module, PLC module is electrically connected to display and controls electric machine rotation, and the running status of display record and display motor is also by the test mode of test macro display automobile rearview mirror; Described test macro also comprises A/D module, and described A/D module is electrically connected to PLC module, and described tester is photoelectric sensor, and described photoelectric sensor is electrically connected to A/D module, described A/D module by the signal transmission of photoelectric sensor to PLC module.
Compared with prior art, the present invention has following advantage,
1, control system adopts PLC module to control, and controls flexibly, simple to operate.
2, install photoelectric sensor in test macro, accurately, precision is high in test.
3, automobile rearview mirror is installed motionless, adopt cam holder to promote dwang motion that guide rod compression carrys out propelling vehicle rearview mirror, and make automobile rearview mirror by fixed frequency up and down or left-right rotation, structure is simple, stable.
4, DYN dynamic automobile rearview mirror can be directly connected in control system, and by programmed control automobile rearview mirror up and down or left-right rotation, it is simple, convenient to detect.
5, guide rod end arranges roller and cam holder roll inside rubs, and resistance is little, and power is low, and noise is little, rational in infrastructure.
6, on cam inner ring, chuck is installed, increases contact area, lead apart from elongated, enhance stability.
7, cam holder adopts nylon material to make, and good integrity is lightweight, the excellent performances such as intensity, wearing quality, thermotolerance and against weather.
8, nylon material is cheap and easy to get, easily processes, and does not need to carry out metalworking technique as alloy material, has saved the expense such as manufacturing procedure and process tool equipment greatly, has reduced cost, and shorten the manufacturing cycle of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of chucking appliance system in the present invention.
Fig. 3 is the sectional structure schematic diagram of fixture in the present invention.
Fig. 4 is the structural representation of steering mechanism in the present invention.
Fig. 5 is the structural representation of cam inner ring of the present invention.
Fig. 6 is the structural representation of convexity wheel carrier of the present invention.
Fig. 7 is the schematic diagram of test macro and test macro in the present invention.
In figure, 10, frame; 11, column sections; 12, table top portion; 13, skeleton; 14, panel; 20, chucking appliance system; 21, support; 22, actuating unit; 221, motor; 222, motor fixing plate; 223, shaft coupling; 224, motor fixed leg; 225, rotating shaft; 226, cam holder; 227, rotating shaft cover; 2261, arc boss; 2262, ring part; 23, installing plate; 24, steering mechanism; 241, cam inner ring; 2411, installation portion; 2412, stage portion; 2413, annular boss; 2414, fixed orifice; 2415, mounting hole; 242, guide rod; 243, chuck; 244, flexible member; 245, projection; 246, roller; 25, erecting frame; 30, automobile rearview mirror; 31, dwang; 40, control system; 50, test macro; 51, photoelectric sensor.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment 1: automobile rearview mirror 30 is mechanical type;
As shown in Figure 1 and Figure 7, this automobile rearview mirror 30 durability degree testing apparatus, comprise frame 10, be arranged on control system 40 in frame 10 and test macro 50 and the chucking appliance system 20 of automobile rearview mirror 30 is installed, automobile rearview mirror 30 to be arranged on chucking appliance system 20 and can be electrically connected to control system 40, control system 40 controls chucking appliance system 20 action and is electrically connected to test macro 50, test macro 50 comprises tester, and tester detects and feeds back the motion state of automobile rearview mirror 30.
Frame 10 has the panel 14 comprising skeleton 13 and cover skeleton 13 surface, skeleton 13 is divided into table top portion 12 and column sections 11, button hole is offered in the side in table top portion 12, in button hole, power switch is installed, display mounting hole is offered in column sections 11, display is arranged in display mounting hole, and deck plate is also provided with chucking appliance system 20, and chucking appliance system 20 is by electrical connection control system 40 and test macro 50.
As shown in Figure 7, control system 40 comprises power switch, PLC module and display, power switch is electrically connected to PLC module, PLC module is electrically connected to display, the actions such as motor 221 rotates, stopping can being controlled by the program of setting, display is fed back to, the running status of display record and display motor 221 by the test mode of test macro 50 display automobile rearview mirror 30 by information.
Test macro 50 also comprises A/D module, A/D module is electrically connected to PLC module, tester is photoelectric sensor 51, and photoelectric sensor 51 is electrically connected to A/D module, and A/D module is delivered to PLC module after the signal that photoelectric sensor 51 transmits is transformed into digital signal.
As depicted in figs. 1 and 2, chucking appliance system 20 comprises support 21 and erecting frame 25, support 21 is joined end to end by some rectangular tubes and forms rectangular-shaped skeleton, the horizontal side of support 21 is connected in table top portion 12, the vertical side of support 21 is provided with erecting frame 25, erecting frame 25 is provided with automobile rearview mirror 30, in column sections 11, photoelectric sensor 51 is installed, the optical radiation of photoelectric sensor 51 is on the minute surface of automobile rearview mirror 30, and photoelectric sensor 51 sends and feeds back rotational angle and the run location of automobile rearview mirror 30.
Erecting frame 25 comprises installing plate 23, steering mechanism 24 and actuating unit 22, installing plate 23 is installed on the stent 21, actuating unit 22 is arranged on support 21 opposite side, steering mechanism 24 is arranged on installing plate 23, actuating unit 22 is connected to steering mechanism 24, and steering mechanism 24 driving automobile rearview mirror 30 moves.
As shown in Figure 4 and Figure 6, steering mechanism 24 comprises cam holder 226 and cam inner ring 241, cam holder 226 is provided with ring part 2262, and ring part 2262 is a ring-type thin-walled of hollow, the inwall of ring part 2262 is provided with arc boss 2261, cam holder 226 is affixed to installing plate 23.
As shown in Figure 5, cam inner ring 241 is in Flange-shaped Parts, be disposed with installation portion 2411, stage portion 2412 and the annular boss 2413 be arranged in stage portion 2412, boss is evenly distributed with four mounting holes 2415, the axis of mounting hole 2415 is evenly distributed on the radial line direction of annular portion and is in same plane, mounting hole 2415 is provided with chuck 243, chuck 243 runs through and is slidably equipped with guide rod 242, installation portion 2411 is provided with some fixed orifices 2414, the axis of fixed orifice 2414 and the axis being parallel of cam inner ring 241, installing plate 23 is provided with counterbore, stage portion 2412 and counterbore match.
As shown in Figure 4, the top of guide rod 242 is provided with projection 245, projection 245 offers groove, roller 246 is installed in groove, roller 246 can be pushed against on the inwall of cam holder 226 upper annular portion 2262, guide rod 242 is arranged with flexible member 244, flexible member 244 two ends are resisted against on projection 245 and chuck 243 respectively, flexible member 244 can drive one end of guide rod 242 to be pushed against on cam holder 226 and guide rod 242 can be made to do straight reciprocating motion along the radial direction of cam inner ring 241, draw close toward the center of cam inner ring 241 at the other end of guide rod 242, and guide rod 242 is arranged with flexible member 244, when automobile rearview mirror 30 is installed on erecting frame 25, the tail end of the dwang 31 on automobile rearview mirror 30 is punctured into the intersection of guide rod 242, guide rod 242 and flexible member 244 clamp dwang 31, cam inner ring 241 is affixed to actuating unit 22, actuating unit 22 can drive cam holder 226 to rotate, when arc boss 2261 turns to roller 246 position, guide rod 242 can be promoted move along guide rod 242 axis direction and promote dwang 31 and move.
Flexible member 244 is spring.
As shown in Figure 3, actuating unit 22 comprises motor 221, motor fixing plate 222, power installing plate 23 and motor fixed leg 224, motor fixing plate 222 is connected on motor 221, motor fixed leg 224 one end is arranged on motor fixing plate 222, the other end is arranged on power installing plate, power installing plate is installed on the stent 21, the output terminal of motor 221 is provided with shaft coupling 223, support 21 is fixed with rotating shaft cover 227, is provided with rotating shaft 225 in rotating shaft cover 227, rotating shaft 225 one end is connected with shaft coupling 223, and the other end is connected to steering mechanism 24.
Embodiment 2: automobile rearview mirror 30 is electrodynamic type;
When automobile rearview mirror 30 is electrodynamic type, automobile rearview mirror 30 is installed on erecting frame 25, in automobile rearview mirror 30, the lead-in wire of motor 221 is connected to power switch, the motor 221 controlled in automobile rearview mirror 30 by the instruction in PLC module is rotated, photoelectric sensor 51 detects the running status of automobile rearview mirror 30, through A/D module feedback to PLC module, and hold out through display display.
The present invention in an initial condition, frame 10 is arranged on table top portion 12, automobile rearview mirror 30 to be measured is arranged on installing plate 23, motor 221 is electrically connected to PLC module, start power switch, PLC module output order, motor 221 drives cam holder 226 to rotate, roller 246 on guide rod 242 annularly portion 2262 inwall rotate, cam inner ring 241 is motionless, guide rod 242 can annularly on boss 2413 chuck 243 slide, when roller 246 moves to arc boss 2261, guide rod 242 compresses, the dwang 31 of propelling vehicle rearview mirror 30, after arc boss 2261 terminates, roller 246 is rolled on annular boss 2413 inwall, arc boss 2261 rotates to next root guide rod 242, and promotion guide rod 242 slides according to this, dwang 31 is under the promotion of guide rod 242, control automobile rearview mirror about 30 or side-to-side movement, the photoelectric sensor 51 being arranged on column sections 11 detects the actuating signal of automobile rearview mirror 30, after A/D module converts by signal transmission to PLC module, the program of PLC module contrast setting, control motor 221 further action, after automobile rearview mirror 30 moves to the number of times of setting, test rear powered-down switch, unload automobile rearview mirror 30, do not reach setting value, when automobile rearview mirror 30 breaks down, then PLC sends the signal of warning, control system 40 stops action, powered-down switch, automobile rearview mirror 30 is extracted out from erecting frame 25 and checks.
Wherein, being made up of nylon material of above-mentioned cam holder 226, described nylon material is become to be grouped into by following parts by weight: nylon66 fiber: 90-110 part, ABS resin: 15-40 part, glass fibre: 10-40 part, compatilizer: 3-15 part, antioxidant: 0.5-3 part, interface modifier: 0.1-3 part, nucleator: 0.05-1 part.
Table 1: the constituent of embodiment of the present invention 3-6 cam holder and parts by weight thereof
Embodiment 3:
Take raw material according to the constituent of embodiment in table 13 cam holder and parts by weight thereof, the barrel in high-speed injection molding machine is heated to 260 DEG C simultaneously, then the above-mentioned raw material taken fully is mixed and add in barrel, being heated to molten condition.Be that to be expelled to temperature be at twice in the cam holder mould of 35 DEG C for the nozzle of the hot flow path of 230 DEG C afterwards through excess temperature by the raw material of molten condition, wherein, the first injection pressure is 8MPa, and the second injection pressure is 6MPa.Then pressurize 10s under pressure is 7MPa, through 5min cooling forming, die sinking obtains cam holder.
Embodiment 4:
Take raw material according to the constituent of embodiment in table 14 cam holder and parts by weight thereof, the barrel in high-speed injection molding machine is heated to 280 DEG C simultaneously, then the above-mentioned raw material taken fully is mixed and add in barrel, being heated to molten condition.Be that to be expelled to temperature be at twice in the cam holder mould of 50 DEG C for the nozzle of the hot flow path of 245 DEG C afterwards through excess temperature by the raw material of molten condition, wherein, the first injection pressure is 9MPa, and the second injection pressure is 7MPa.Then pressurize 8s under pressure is 8MPa, through 6min cooling forming, die sinking obtains cam holder.
Embodiment 5:
Take raw material according to the constituent of embodiment in table 15 cam holder and parts by weight thereof, the barrel in high-speed injection molding machine is heated to 300 DEG C simultaneously, then the above-mentioned raw material taken fully is mixed and add in barrel, being heated to molten condition.Be that to be expelled to temperature be at twice in the cam holder mould of 65 DEG C for the nozzle of the hot flow path of 260 DEG C afterwards through excess temperature by the raw material of molten condition, wherein, the first injection pressure is 10MPa, and the second injection pressure is 8MPa.Then pressurize 7s under pressure is 9MPa, through 4min cooling forming, die sinking obtains cam holder.
Embodiment 6:
Take raw material according to the constituent of embodiment in table 16 cam holder and parts by weight thereof, the barrel in high-speed injection molding machine is heated to 320 DEG C simultaneously, then the above-mentioned raw material taken fully is mixed and add in barrel, being heated to molten condition.Be that to be expelled to temperature be at twice in the cam holder mould of 80 DEG C for the nozzle of the hot flow path of 280 DEG C afterwards through excess temperature by the raw material of molten condition, wherein, the first injection pressure is 10MPa, and the second injection pressure is 9MPa.Then pressurize 10s under pressure is 9MPa, through 8min cooling forming, die sinking obtains cam holder.
The cam holder that embodiment of the present invention 3-6 is obtained carries out performance test, and test result is as shown in table 2.
The cam holder the performance test results that table 2: embodiment of the present invention 3-6 is obtained
As can be seen from Table 2, the better performances such as cam holder intensity, wearing quality, shaping yield rate that embodiment of the present invention 3-6 nylon material is made, and also quality is light, and the prospect making cam holder with its replacement alloy material is better.
The cam holder that above-described embodiment 3-6 is obtained is used in final products automobile rearview mirror fatigue strength reliability testing apparatus, the better performances such as intensity, wearing quality, against weather, molding shrinkage of cam holder, and the cam holder good integrity, the quality that adopt nylon material to make are light, relative to widely using the cam holder that alloy material makes at present, cam holder of the present invention do not need to carry out metalworking technique, both the expense such as manufacturing procedure and process tool equipment had been saved, reduce cost, also shorten the manufacturing cycle of product.Therefore, the cam holder that the cam holder adopting material of the present invention to make replaces alloy material to make is better for prospect in automobile rearview mirror fatigue strength reliability testing apparatus.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise it is obvious for leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (9)
1. an automobile rearview mirror fatigue strength reliability testing apparatus, comprise frame, the chucking appliance system of rack-mounted control system and test macro and installation automobile rearview mirror, it is characterized in that, described chucking appliance system comprises support and rack-mount erecting frame, automobile rearview mirror to be arranged on erecting frame and can be electrically connected to control system, described control system controls chucking appliance system action, described test macro comprises tester, described tester to be arranged in frame and to be electrically connected to control system, described tester detects the motion state of automobile rearview mirror and feeds back to control system, wherein, described erecting frame comprises installing plate, steering mechanism and actuating unit, described steering mechanism comprises cam holder and cam inner ring, described cam holder is affixed to installing plate, described cam inner ring is affixed to actuating unit, the radial direction of described cam inner ring is provided with guide rod, described guide rod is provided with flexible member, described flexible member can drive one end of guide rod to be pushed against on cam holder and guide rod can be made to do straight reciprocating motion along the radial direction of cam inner ring, the other end of described guide rod can prop up the dwang that automobile rearview mirror is arranged, described actuating unit can drive cam holder to rotate, guide rod is made to promote dwang motion, described cam holder is made up of nylon material, described nylon material is become to be grouped into by following parts by weight: nylon66 fiber: 90-110 part, ABS resin: 15-40 part, glass fibre: 10-40 part, compatilizer: 3-15 part, antioxidant: 0.5-3 part, interface modifier: 0.1-3 part, nucleator: 0.05-1 part.
2. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, the preparation method of described cam holder comprises the following steps:
S1, take raw material by the constituent of nylon material according to claim 1 and parts by weight thereof, barrel in high-speed injection molding machine is heated to 260-320 DEG C simultaneously, then the above-mentioned raw material taken fully mixed and add in barrel, being heated to molten condition;
S2, the nozzle of the raw material of molten condition through hot flow path to be expelled in the cam holder mould after heating at twice, to obtain cam holder through pressurize, cooling forming, die sinking.
3. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 2, it is characterized in that, in the preparation method of described cam holder, in step S2, hot flow path temperature is 230-280 DEG C, mold temperature is 20-90 DEG C, first injection pressure is 8-10MPa, and the second injection pressure is 6-9MPa, and dwell pressure is 7-9MPa, dwell time is 6-12s, and cool time is 3-8min.
4. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described installing plate is arranged on support side, described actuating unit is arranged on support opposite side, described steering mechanism installs on a mounting board, described actuating unit is connected to steering mechanism, the driving automobile rearview mirror motion of described steering mechanism.
5. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described cam holder is provided with ring part, the inwall of described ring part is provided with arc boss, the top of described guide rod is provided with roller, described roller is pushed against on the inwall of ring part, when arc boss turns to scroll wheel positions, can promote guide rod and move along guide rod axis direction and promote dwang and move.
6. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described cam inner ring is provided with annular boss, described boss is provided with mounting hole, in described mounting hole, chuck is installed, described guide rod runs through and is slidably installed on chuck, and described flexible member is set on guide rod and two ends and is resisted against respectively on the end of guide rod and the end of chuck.
7. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described cam inner ring is Flange-shaped Parts, be disposed with installation portion, stage portion and the annular boss be arranged in stage portion, the axis of described mounting hole is evenly distributed on the radial line direction of annular portion and is in same plane, described installation portion is provided with some fixed orifices, the axis of described fixed orifice and the axis being parallel of cam inner ring, described installing plate is provided with counterbore, and described stage portion and counterbore match.
8. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described actuating unit comprises motor, motor fixing plate, power installing plate and motor fixed leg, described motor fixing plate is connected on motor, described motor fixed leg one end is arranged on motor fixing plate, the other end is arranged on power installing plate, described power installing plate is rack-mount, the output terminal of described motor is connected to steering mechanism, the output terminal of described motor is provided with shaft coupling, described frame is fixed with rotating shaft cover, rotating shaft is provided with in described rotating shaft cover, described rotating shaft one end is connected with shaft coupling, the other end is connected to steering mechanism.
9. a kind of automobile rearview mirror fatigue strength reliability testing apparatus according to claim 1, it is characterized in that, described control system comprises power switch, PLC module and display, described power switch is electrically connected to PLC module, PLC module is electrically connected to display and controls electric machine rotation, and the running status of display record and display motor is also by the test mode of test macro display automobile rearview mirror; Described test macro also comprises A/D module, and described A/D module is electrically connected to PLC module, and described tester is photoelectric sensor, and described photoelectric sensor is electrically connected to A/D module, described A/D module by the signal transmission of photoelectric sensor to PLC module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069135.3A CN103884513B (en) | 2014-02-27 | 2014-02-27 | Automotive rearview mirror fatigue strength reliability testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069135.3A CN103884513B (en) | 2014-02-27 | 2014-02-27 | Automotive rearview mirror fatigue strength reliability testing device |
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