CN2832337Y - Encoding gear processing device for microelectromechanical safe cipher lock - Google Patents
Encoding gear processing device for microelectromechanical safe cipher lock Download PDFInfo
- Publication number
- CN2832337Y CN2832337Y CN 200520092208 CN200520092208U CN2832337Y CN 2832337 Y CN2832337 Y CN 2832337Y CN 200520092208 CN200520092208 CN 200520092208 CN 200520092208 U CN200520092208 U CN 200520092208U CN 2832337 Y CN2832337 Y CN 2832337Y
- Authority
- CN
- China
- Prior art keywords
- die holder
- coded lock
- blank
- micro electronmechanical
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012545 processing Methods 0.000 title abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000004826 seaming Methods 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 25
- 230000002452 interceptive effect Effects 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Landscapes
- Gears, Cams (AREA)
Abstract
The utility model discloses an encoding gear processing device for a micro-electromechanical safe cipher lock, which comprises a mini-type linear motor, an upper ram, a spacing sleeve, a magnetostriction actuator, a gas-shield non-contact type heating furnace, a punch base, a punch, a blank, a mould, a die holder and a lower ram, wherein the mini-type linear motor is connected with the top of the upper ram, and the neck of the upper ram is provided with the spacing sleeve, and the lower end is installed in the non-contact type heating furnace; the upper end surface of the punch base and the bottom end surface of the magnetostriction actuator are arranged in parallel; the punch base is connected with the punch, and the bottom of the punch base is arranged on the die holder which is fixed on the upper end surface of the lower ram via a return spring; the blank, the mould and a cushion block are respectively put in the cavity of the die holder; at least two temperature-measurement blind holes in which accurate thermocouples are inserted are distributed in the radial direction on the upper part of the die holder. The utility model has the advantages of less equipment investment, short process period, further reduced component size along with the mould design, flexible assembly, etc.
Description
Technical field
The utility model relates to fine Technology of Plastic Processing field, specifically describing is a kind of micro electronmechanical safe coded lock (MEMS safety lock) encoder gear processing unit (plant), is specially adapted to the anti-manufacturing processing of interfering gear collecting mechanism (CMG:counter meshing gears mechanism) encoder gear.
Technical background
" key incident (high-consequence event) " is meant the carelessness operation to system, may cause the catastrophic loss or the environmentally hazardous system of life, property.Micro electronmechanical safe coded lock (MEMS safety lock) is the device that a class is used to guarantee " key system " security, also can be described as little lock (microlock), miniature combination lock (micro combination lock), miniature password discriminator (micro discriminator) or miniature use gauge tap (micro use-control switch).
On structure, micro electronmechanical safe coded lock is made up of lock body, control loop, energy coupling path three parts.Typical micro electronmechanical safe coded lock contains four basic functional units: driver, discriminator mechanism, coupler and monitor.Driver is orthoscopic or rotary actuator, in order to drive discriminator mechanism.Discriminator mechanism realizes that PUK sets, and is the core that password is differentiated; Usually use binary code character (can be expressed as symbol " A ", any composite sequence of " the B ") release of one 24 word length, any error code in the input intention sign indicating number will cause the locking of discriminator mechanism.Coupler come down to need progressively move could be closed the open type cut off device, have only and import the unlocked position that the intention sign indicating number could progressively be driven into it path " coupling " entirely truely, make energy or signal be passed through lock body.The monitor that is used for built-in self check is served the reliability and the testability of device, does not influence function and realizes.
The MEMS safe coded lock requires that following characteristics are arranged: size is little, weight is little; The lock of hundreds of single-piece customizations can be made with batch batch, and is with low cost; Vibration resistance, impact; Need not the complicated parts assembling when adopting surface micromachined.
At present, known microminiature security password latch mechanism is " pin in the labyrinth (Pin in themaze) " mechanism and " the anti-gear collection (CMG:Counter meshing gears assembly) of interfering " mechanism.Their function is: the machinery assembling of cipher symbol; Cooperate with other parts of safe coded lock, realize defeated people's symbol of user and the discriminating one by one that sets cipher symbol, defeated people's symbol of mistake will cause mechanism's locking.As " lock core " of safe coded lock, the security password latch mechanism must be the single-piece customization, to guarantee " opening different locks with different keys ".
Parallel and Column Layout constitutes by a pair of " the gear collection " that is equipped with teeth (or be called " code-disc collection ") axle in " anti-interfere with gear collection " mechanism.A pair of " gear collection " is the set of the paired compatibility of multilayer " code-disc ".Among the different embodiment, the number of plies of " code-disc is to group ", the teeth of each code-disc set design (promptly whether setting teeth on certain indexing position on the circumference), relevant with predetermined unlocking pin symbol combination, also require relevant (whether " error code locks immediately ", a lock whether allow the unlocking pins etc. of organizing) with the specific design of mechanism more.
The characteristics of " the anti-gear collection of interfering " mechanism are: mechanism structure is simple; It is comparatively complicated, implicit, safe that password sets logic; In the security password locking device, only need a kind of unidirectional step drive device to drive " the anti-gear collection of interfering " mechanism, can realize the Core Feature of " password sets and differentiates ", " locking of error code interference of tooth ", " installing progressively, release puts in place " these three coded lock devices.In addition, consider from the security of system's design, also there is outstanding advantage in " the anti-gear collection of interfering " mechanism.For example, on the subtending port link of back level " energy gate mechanism (Energy gating mechanism) ", can easily avoid the safety Design defective of " single point failure (single point failure) " class.
U.S. Sandia National Laboratory has reported the example of realizing " the anti-gear collection of interfering " mechanism with the multiple-level surface micromechanical process, and drive unit is an electrostatic actuator.At present, the application of China's surface micromechanical process is almost blank; As if using body silicon processing and fabricating " the anti-gear collection of interfering " mechanism, may be owing to the code-disc thickness low LCL, the not enough root folding of the structural strength when causing a pair of teeth because of interference (differentiating error code), and then make mechanism, failure of apparatus.In addition, " accurate 3 dimensions (2 dimension figures are stretched along the 3rd the Wella) " design feature of " the anti-gear collection of interfering " mechanism itself and the characteristics of LIGA technology are coincide.Therefore, make the seemingly best at present selection of " the anti-gear collection of interfering " mechanism with LIGA technology.The single code-disc LIGA technology sample that people such as the Gao Yang of China Engineering Physics Research Institute make at the LIGA of BSRF experiment centre, material is a metallic nickel, intensity is difficult to guarantee actual use.
The utility model content
Big in order to overcome in the prior art LIGA investment in machinery and equipment; Process cycle is long; Size of components is difficult to reduce; The LIGA part is assembled into all deficiencies that parts/complete machine still has certain difficulty, and the purpose of this utility model is to provide a kind of and has that equipment investment is little, process cycle is short, size of components is with mould design further reducing, the assemble micro electronmechanical safe coded lock encoded gear machining equipment of flexible characteristic.
Technical solutions of the utility model comprise: miniature line motor, seaming chuck, spacing collar, magnetic deformation actuator, the contactless heating furnace of gas shiled, drift base, drift, blank, mould, die holder, push-down head, miniature line motor is connected with the top of seaming chuck, in order to apply bigger output shift quantity; The neck of seaming chuck is provided with spacing collar, avoids excessive stroke to damage magnetic deformation actuator; The lower end of seaming chuck is installed in the contactless heating furnace under the inert gas shielding; Drift base upper surface is parallel with the bottom face of magnetic deformation actuator, transmits the effect of power in forming process.The drift base connects by connecting screw and drift; Drift base bottom is supported on the die holder by back-moving spring; The chamber of the die holder that blank (employing bulk amorphous alloys), mould and cushion block place successively; Die holder is the fluted body inner-cavity structure with opening of gradient, is used for guiding and discharging; In at least two thermometric blind holes of die holder top radial distribution, be used for inserting accurate thermocouple and detect the variation of forming process blank temperature; Alignment pin is fixed in die holder the upper surface of push-down head.
The key that realizes micro electronmechanical safe coded lock encoded gear manufacturing is that accessory size is small in the higher requirement of former proposition.Little former stroke is generally the millimeter level, and precision reaches micron order, and traditional building mortion can't satisfy the requirement of little shaping.Adopt the utility model processing unit (plant) to realize little forming technology process.During use, provide initial displacement by miniature line motor.In little forming process, provide high-precision fine motion displacement by magnetic deformation actuator.In the case, realize the coordination control that different displacement range are interior.And pass through more mold exchange, can realize the manufacturing processing of individual layer monodentate encoder gear and the multiple tooth encoder gear of multilayer.
Compared with prior art, the utility model has more following advantage:
1. can realize the microplasticity processing and manufacturing of micro electronmechanical safe coded lock encoded gear.Compare with the conventional surface micromechanical process, the investment of the utility model processing unit (plant) is little, process cycle short, size of components can further reduce, it is flexible to assemble;
2. can realize the amorphous metalization of micro electronmechanical safe coded lock encoded gear.Because adopt the bulk amorphous alloys blank, under the identical situation of code-disc thickness, the structural strength of product is better than body silicon materials of the prior art, avoids because undercapacity and root folding during interference of tooth (differentiating error code), and then make mechanism, failure of apparatus;
3. adopt the utility model can realize the polishing processing of micro electronmechanical safe coded lock encoded gear.The utility model can be used the VISCOUS FLOW of bulk amorphous alloys in the supercooling temperature zone, can realize the processing technology that piece surface duplicates for the nanoscale of die surface situation.Avoided normal in the processing of conventional surface micromechanical process and sharp-pointed edge (its radius of curvature only is several nanometers) occurred, thereby caused the unusual distribution of stress field, made load concentration and deficiency such as inefficacy takes place;
4. adopt the utility model device can realize the miniature extruding manufacturing processing of micro electronmechanical safe coded lock encoded gear;
5. adopt the utility model device can realize the amorphous metalization of micro electronmechanical safe coded lock encoded gear.Use the encoder gear of Zr, La, Ti, Cu, Fe, Pd, Pt, Pr, Mg, the requirement of Al base large amorphous alloy processing different operating;
6. the utility model device using miniature line motor provides initial displacement, and magnetic deformation actuator provides high-precision fine motion displacement.Both combinations realize the coordination control in the different displacement range;
7. the utility model device adopts the contactless heating furnace assurance of gas shiled working region evenly to heat, and avoids the blank heating oxidation;
8. adopt the utility model processing unit (plant) can be as required mold exchange more neatly, realize the manufacturing processing of individual layer monodentate encoder gear and the multiple tooth encoder gear of multilayer;
9. the utility model device forming quality is good, and effectively Control Shaft off-centre guarantees profile accuracy, even obtains the nanoscale surface;
The utility model device tool and mould assembling flexibly, compact conformation, advantages of simplicity and high efficiency characteristics.
Description of drawings
Fig. 1 is the schematic diagram of processing method of the present utility model.
Fig. 2 is a processing unit (plant) structural representation of the present utility model.
Fig. 3-the 1st, the structural representation of micro electronmechanical safe coded lock encoded gear among embodiment of the utility model.
Fig. 3-2 is an individual layer monodentate encoder gear mould structure cutaway view.
Fig. 3-3 is the vertical view of Fig. 3-2.
Fig. 4-the 1st, the structural representation of micro electronmechanical safe coded lock encoded gear among another embodiment of the utility model.
Fig. 4-2 is double-deck multiple tooth encoder gear mould structure cutaway view.
Fig. 4-3 is the vertical view of Fig. 4-2.
The specific embodiment
Embodiment 1
Specify present embodiment below in conjunction with Fig. 2 and Fig. 3-1,3-2.
The utility model processing unit (plant) is made up of miniature line motor 1, seaming chuck 2, spacing collar 3, magnetic deformation actuator 4, the contactless heating furnace 5 of gas shiled, drift base 6, drift 7, blank 8, mould 9, cushion block 10, die holder 11, alignment pin 12, push-down head 13, thermometric blind hole 14, back-moving spring 15 and connection screw 16; wherein: miniature line motor 1 is connected with the top of seaming chuck 2, in order to apply bigger output shift quantity.The neck of seaming chuck 2 is provided with spacing collar 3, avoids excessive stroke to damage magnetic deformation actuator 4.The lower end of seaming chuck 2 is installed in the contactless heating furnace 5 of gas shiled.Contactless heating furnace 5 adopts fans that resistance wire is produced heat evenly to import the working region into, 600 ℃ of maximum temperatures, and by PLC control heating-up temperature, error range ± 1 ℃.Contactless heating furnace 5 can feed inert gas (as argon gas), prevents the blank heating oxidation.Drift base 6 upper surfaces are parallel with the bottom face of magnetic deformation actuator 4, transmit the effect of power in forming process.Drift base 6 connects with drift 7 by connecting screw 16.Drift base 6 bottoms are supported on die holder 11 by back-moving spring 15.The chamber of the die holder 11 that blank 8, mould 9 and cushion block 10 place successively.Die holder 11 is the fluted body inner-cavity structure with opening of gradient, is used for guiding and discharging.In at least two thermometric blind holes 14 of die holder 11 top radial distribution, be used for inserting accurate thermocouple and detect the variation of forming process blank temperature.Alignment pin 12 is fixed in die holder 11 upper surface of push-down head 13.
Described mould 9 is an individual layer monodentate encoder gear die; The combining structure of miniature line motor (1) and magnetic deformation actuator (4) is adopted in described driving.
Process is referring to Fig. 1:
According to the concrete overall size of encoder gear, select diameter 2mm, the bulk Mg of the size of thick 0.7mm
65Cu
25Y
10Non-crystaline amorphous metal blank 8, the miniature extrusion die of preparation encoder gear.
The processing unit (plant) integral body that extrusion die is housed is placed contactless heating furnace 5, begin heating behind the feeding 10MPa argon gas, heating-up temperature is (present embodiment is an example with 200 ℃) between 180～200 ℃.
Behind individual layer monodentate extrusion die 9 temperature stabilizations, put into bulk amorphous alloys blank 8 fast, continue to be heated to temperature fluctuation and disappear, be stabilized between 180～200 ℃.
Implement miniature extrusion molding, control shaping strain rate 1 * 10
-2～1 * 10
-3s
-1(present embodiment is with 1 * 10
-2s
-1Be example).
Be shaped after the end, fast discharging and withdrawing device place on the bulk copper coin and cool off, and avoid the blank crystallization.Treat that device is cooled to the encoder gear after room temperature is taken out shaping.
Its processing result: encoder gear dimensional tolerance-0.01～+ 0.005mm, surface roughness 0.5 μ m satisfies design objective fully.The encoder gear material that X ray characterizes after being shaped keeps noncrystalline state, satisfactory mechanical property.
Embodiment 2
Specify present embodiment below in conjunction with Fig. 2 and Fig. 4-1,4-2.Its processing unit (plant) difference from Example 1 is: mould 9 is double-deck multiple tooth encoder gear die.
Process:
1. according to the concrete overall size of encoder gear, select diameter 2mm, the bulk Mg of the size of thick 1.6mm
65Cu
25Y
10Non-crystaline amorphous metal blank 8, the miniature extrusion die of preparation encoder gear.
2. the processing unit (plant) integral body that extrusion die will be housed places contactless heating furnace 5, begins heating behind the feeding 10MPa argon gas, and heating-up temperature is (present embodiment is an example with 180 ℃) between 180～200 ℃.
3. behind multiple tooth extrusion die 9 temperature stabilizations of bilayer, put into bulk amorphous alloys blank 8 fast, continue to be heated to temperature fluctuation and disappear, be stabilized between 180～200 ℃.
4. implement miniature extrusion molding, control shaping strain rate 1 * 10
-2～1 * 10
-3s
-1(present embodiment is with 1 * 10
-3s
-1Be example).
5. be shaped after the end, fast discharging and withdrawing device place on the bulk copper coin and cool off, and avoid the blank crystallization.Treat that device is cooled to the encoder gear after room temperature is taken out shaping.
Its processing result: encoder gear dimensional tolerance-0.01～+ 0.005mm, surface roughness 0.5 μ m satisfies design objective fully.The encoder gear material that X ray characterizes after being shaped keeps noncrystalline state, satisfactory mechanical property.
Claims (6)
1. micro electronmechanical safe coded lock encoded gear machining equipment, it is characterized in that comprising: miniature line motor (1), seaming chuck (2), spacing collar (3), magnetic deformation actuator (4), the contactless heating furnace of gas shiled (5), drift base (6), drift (7), blank (8), mould (9), die holder (11), push-down head (13), wherein said miniature line motor (1) is connected with the top of seaming chuck (2), the neck of seaming chuck (2) is provided with spacing collar (3), its lower end is installed in the contactless heating furnace (5), the bottom face of drift base (6) upper surface and magnetic deformation actuator (4) be arranged in parallel, drift base (6) connects with drift (7), and drift base (6) bottom is installed on the die holder (11) of the upper surface of being fixed in push-down head (13) by back-moving spring (15); The chamber of the die holder (11) that blank (8), mould (9) and cushion block (10) place successively; Be radially distributed with at least two on die holder (11) top and insert the thermometric blind hole (14) that accurate thermocouple is used.
2. according to the described micro electronmechanical safe coded lock encoded gear machining equipment of claim 1, it is characterized in that: described die holder (11) is the fluted body inner-cavity structure with opening of gradient.
3. according to the described micro electronmechanical safe coded lock encoded gear machining equipment of claim 1, it is characterized in that: be connected with inert gas in the described contactless heating furnace (5).
4. according to the described micro electronmechanical safe coded lock encoded gear machining equipment of claim 1, it is characterized in that: blank (8) adopts bulk amorphous alloys.
5. according to the described micro electronmechanical safe coded lock encoded gear machining equipment of claim 2, it is characterized in that: the combining structure of miniature line motor (1) and magnetic deformation actuator (4) is adopted in described driving.
6. according to the described micro electronmechanical safe coded lock encoded gear machining equipment of claim 2, it is characterized in that: described miniature extrusion die (9) is individual layer monodentate or the multiple tooth structure of multilayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092208 CN2832337Y (en) | 2005-08-19 | 2005-08-19 | Encoding gear processing device for microelectromechanical safe cipher lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092208 CN2832337Y (en) | 2005-08-19 | 2005-08-19 | Encoding gear processing device for microelectromechanical safe cipher lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2832337Y true CN2832337Y (en) | 2006-11-01 |
Family
ID=37196653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520092208 Expired - Lifetime CN2832337Y (en) | 2005-08-19 | 2005-08-19 | Encoding gear processing device for microelectromechanical safe cipher lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2832337Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387370C (en) * | 2005-08-19 | 2008-05-14 | 中国科学院金属研究所 | Micro electromechanic safe coded lock encoded method for processing gear wheel, and process unit |
| CN108317233A (en) * | 2018-04-09 | 2018-07-24 | 中国工程物理研究院电子工程研究所 | Integration applied to MEMS micro-nano technologies is without assembly multilayer micro-cell electron capture detector structure |
| CN112318525A (en) * | 2020-11-11 | 2021-02-05 | 合肥学院 | Track inspection robot |
-
2005
- 2005-08-19 CN CN 200520092208 patent/CN2832337Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387370C (en) * | 2005-08-19 | 2008-05-14 | 中国科学院金属研究所 | Micro electromechanic safe coded lock encoded method for processing gear wheel, and process unit |
| CN108317233A (en) * | 2018-04-09 | 2018-07-24 | 中国工程物理研究院电子工程研究所 | Integration applied to MEMS micro-nano technologies is without assembly multilayer micro-cell electron capture detector structure |
| CN108317233B (en) * | 2018-04-09 | 2023-06-20 | 中国工程物理研究院电子工程研究所 | Integrated assembling-free multilayer micro-gear structure applied to MEMS micro-nano processing |
| CN112318525A (en) * | 2020-11-11 | 2021-02-05 | 合肥学院 | Track inspection robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1696153B1 (en) | Precision gear, its gear mechanism and production method of precision gear | |
| CN2832337Y (en) | Encoding gear processing device for microelectromechanical safe cipher lock | |
| WO2018008967A1 (en) | Powder metallurgy press mold for manufacturing helical gear | |
| CN114178555B (en) | Main shaft structure applied to friction additive manufacturing device | |
| CN214442462U (en) | Stamping die is used in sheet metal component processing | |
| CN102717290A (en) | High-speed reblading mechanism for small drilling and milling center | |
| CN106607500B (en) | Stamping die for machining two coaxial holes on reverse gear arm support | |
| CN100387370C (en) | Micro electromechanic safe coded lock encoded method for processing gear wheel, and process unit | |
| CN214023005U (en) | A punch press mould for protecting sheet metal component processing | |
| CN216400234U (en) | Mould capable of quickly replacing mould core | |
| CN201941128U (en) | Injection mold for plastic spherical pipe product | |
| CN100386166C (en) | One-forge-to-multipiece superplastic forming device for amorphous alloy precise parts | |
| CN214137106U (en) | Automatic ejection device for front mold of injection mold | |
| CN214188609U (en) | Quick installation mould | |
| CN202883568U (en) | Multi-tooth index plate self-locking device | |
| CN1274934C (en) | Separation and reunion type theftproof lock | |
| CN218488981U (en) | One-step forming structure for screw teeth of die product and injection molding device | |
| CN113275497B (en) | Upsetting crankshaft left and right die with hidden locking sliding pin | |
| CN211192033U (en) | Main shaft locking structure of numerical control machine tool | |
| CN113145743B (en) | Stamping die convenient to change | |
| CN220278263U (en) | High-precision powder metallurgy gear die capable of preventing demolding and breaking | |
| CN212078949U (en) | Clutch module of lock | |
| CN212792712U (en) | Gear bolt gasket composite die | |
| CN216804109U (en) | Mold for movable insert of high-temperature mold | |
| CN219822072U (en) | Automatic clamping and positioning mechanism for restraint tray |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080514 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080514 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |