CN108547923B - High-precision linear displacement transmission mechanism capable of being infinitely extended - Google Patents
High-precision linear displacement transmission mechanism capable of being infinitely extended Download PDFInfo
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- CN108547923B CN108547923B CN201810576603.4A CN201810576603A CN108547923B CN 108547923 B CN108547923 B CN 108547923B CN 201810576603 A CN201810576603 A CN 201810576603A CN 108547923 B CN108547923 B CN 108547923B
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- bearing
- mandrel
- transmission mechanism
- linear displacement
- roller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H2025/2276—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers using roller spacers, i.e. spacers separating the rollers, e.g. by forming a complete chain
Abstract
The invention discloses a high-precision linear displacement transmission mechanism capable of infinitely extending, which comprises: a base; the roller strip assembling group is arranged on a roller strip mounting base surface in the middle of the top surface of the base; the linear guide rail pairs are arranged on two sides of the top surface of the base; the sliding table is arranged on the linear guide rail pair; the cam assembly group is arranged on the bottom surface of the sliding table through a bearing seat; the servo motor is arranged on the sliding table, and a small belt wheel is mounted on an output shaft of the servo motor; the small belt wheel is connected with an input belt wheel of the cam assembly group through a synchronous belt; the cam assembly group is in matched transmission with the roller strip assembly group. The infinitely-extendable high-precision linear displacement transmission mechanism is suitable for long-stroke linear displacement, can be infinitely extended, and has the advantages of high precision, long distance, high displacement speed and low maintenance cost.
Description
Technical Field
The invention relates to the technical field of mechanical equipment transmission mechanisms, in particular to a high-precision linear displacement transmission mechanism capable of being infinitely extended.
Background
The linear displacement transmission mechanism is a mechanism that must be used for linear movement of various mechanical devices, and is a linear displacement mechanism that requires high positioning accuracy, such as a machine tool, an automatic production line, and a robot.
At present, the widely used high-precision linear displacement transmission mechanism comprises a ball screw pair and a rack and pinion pair.
The ball screw pair is widely used on various precision equipment, such as a machine tool, and has various advantages of high speed, high precision, high stability and the like in a short distance, however, along with the extension of the displacement distance, the displacement speed and the lead precision of the ball screw pair are reduced, the manufacturing difficulty and the purchasing cost are continuously increased, the manufacturing length is limited, the longer the screw is, the larger the thermal deformation is caused by the influence of temperature, and meanwhile, the manufacturing of the length of the screw is limited to a certain extent, so that the ball screw pair is not suitable for the linear motion with an ultra-long stroke.
Later, people often use a gear and rack pair to replace a ball screw pair in long-stroke linear movement, but the gear and rack pair generally needs to drive a pinion to rotate through a speed reducer to realize linear displacement, a high-speed precision planetary speed reducer is widely used at present, zero backlash cannot be achieved, the larger the diameter of the pinion is, the larger the backlash reflected to a linear shaft is, and the performance and the processing precision of a machine tool can be directly reduced; if double gears are used for eliminating backlash, a set of motor and reducing mechanism is needed, and the cost is doubled; in addition, the gears in the gear rack pair and the planetary reducer are all sliding friction pairs, so that high requirements are required on lubrication, material selection and machining precision of parts, and the gears are worn quickly and need to be readjusted or replaced when in use, so that the use cost is increased.
Therefore, how to provide a high-precision linear displacement transmission mechanism capable of being infinitely extended is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides an infinitely extendable high-precision linear displacement transmission mechanism, which is suitable for long-stroke linear displacement, can be infinitely extended, and has the advantages of high precision, long distance, high displacement speed, and low maintenance cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
an infinitely extendable high precision linear displacement transmission comprising: a base; the roller strip assembling group is installed on a roller strip installation base surface in the middle of the top surface of the base; the linear guide rail pairs are arranged on two sides of the top surface of the base; the sliding table is arranged on the linear guide rail pair; the cam assembly group is installed on the bottom surface of the sliding table through a bearing seat; the servo motor is arranged on the sliding table, and a small belt wheel is mounted on an output shaft of the servo motor; the small belt wheel is connected with an input belt wheel of the cam assembly group through a synchronous belt; the cam assembly group is in matched transmission with the roller strip assembly group.
Preferably, the roller bar assembly set includes: the roller mounting device comprises a plurality of roller mounting bars, a plurality of connecting plates and a plurality of connecting plates, wherein a plurality of pin holes with the same interval are formed in each roller mounting bar; each roller mounting bar comprises a plurality of rollers, and each roller comprises a pin shaft, a first bearing, a bearing thin spacer, a second bearing and a heightening sheet, wherein the first bearing, the bearing thin spacer, the second bearing and the heightening sheet are sleeved on the pin shaft; the pin shaft is inserted into the pin hole and is compressed and fixed through a fastening screw.
Preferably, the first bearing and the second bearing are both deep groove ball bearings.
Preferably, the length of each roller mounting strip is less than 1m, so that pitch error can be controlled.
Preferably, the cam assembly set includes: the two ends of the mandrel are respectively provided with a third bearing and a fourth bearing; the mandrel penetrates through inner holes of the two cylindrical cams, and two first key grooves which are symmetrically distributed are milled on the outer circles of the adjacent end surfaces of the two cylindrical cams; the two cylindrical cams are arranged between the third bearing and the fourth middle bearing; the split type adjusting piece is arranged between the adjacent end faces, a second key groove corresponding to the first key groove is also formed in the outer circle, and the first key groove and the second key groove are fixedly connected through a connecting key and are fixed on the two cylindrical cams through screws; one end of the mandrel, which is provided with the third bearing, is locked through a locking nut; one end of the mandrel, which is provided with the fourth bearing, is sleeved with a synchronous belt pulley, and the synchronous belt pulley is locked at the other end of the mandrel through a belt pulley expansion sleeve.
Preferably, the cylinder cam is single lead space cylinder cam, the manufacturing thickness of subdivision formula adjustment sheet is greater than actual thickness, and is a whole circle gasket pair subdivision two halves, in order to guarantee the cylinder cam cooperation advances first bearing with behind the second bearing, can pass through the grinding the thickness of subdivision formula adjustment sheet, and right the cylinder cam applys relative torsional force and makes the cylinder cam pushes away the roller because the cooperation of spiral slot pushes away the centre and extrudees, treats it grinds behind appropriate thickness the keyway of cylinder cam just aligns to divide the formula adjustment sheet, makes only one relative face and roller cooperation separately of cylinder cam has eliminated the back clearance.
Preferably, the cam assembly set is a single cylindrical cam set, comprising: the third bearing and the fourth bearing are respectively arranged at two ends of the mandrel; the mandrel penetrates through an inner hole of the cylindrical cam; one end of the mandrel, which is provided with the third bearing, is locked by the locking nut; one end of the mandrel, which is provided with the fourth bearing, is sleeved with the synchronous belt pulley, and the synchronous belt pulley is locked at the other end of the mandrel through the belt pulley expansion sleeve. For some applications with lower accuracy, a single cylindrical cam set is used, thereby reducing cost.
Preferably, the third bearing and the fourth bearing are both deep groove ball bearings.
Preferably, the top surface of the base is concave.
According to the technical scheme, compared with the prior art, the invention discloses a high-precision linear displacement transmission mechanism capable of being infinitely extended, wherein a roller strip assembly group comprises a plurality of roller mounting strips, and the plurality of roller mounting strips are connected through a splicing mounting plate and can be infinitely extended and spliced to the required length; the mandrel is penetrated with a single-lead space cylindrical cam, a split type adjusting sheet is arranged between the two cylindrical cams, and the groove of the cylindrical cam is larger than the outer diameter of the roller during manufacturing, so that the two cylindrical cams are respectively engaged on one side by adjusting split type adjustment, and backlash is eliminated; meanwhile, a synchronous belt wheel is installed at one end, where the fourth bearing is installed, of the mandrel, and the servo motor drives the mandrel to rotate through the synchronous belt wheel, so that zero-backlash transmission is achieved.
The invention not only has the advantages of the rolling friction and the spiral transmission of the screw rod pair, but also has the characteristics of rapid displacement of the gear and the rack and unlimited length, and simultaneously, because of the rolling friction, the abrasion is smaller, the lubricating life is longer than that of the gear and the rack, and the maintenance cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of a linear displacement transmission mechanism provided by the invention.
Fig. 2 is a schematic structural diagram of a linear displacement transmission mechanism provided by the invention.
Fig. 3 is a first structural schematic diagram of the roller strip assembly group provided by the invention.
Fig. 4 is a schematic structural diagram of a roller strip assembly group provided by the invention.
Fig. 5 is a cross-sectional view a-a of an assembled set of roller bars provided by the present invention.
Fig. 6 is a first structural schematic diagram of the cam assembly provided by the invention.
Figure 7 is a cross-sectional view a-a of a cam assembly provided by the present invention.
Fig. 8 is a schematic structural diagram of a cam assembly set provided by the invention.
Fig. 9 is a cross-sectional view of B-B of the cam assembly provided by the present invention.
Fig. 10 is a first structural schematic diagram of a single cam set provided by the present invention.
Fig. 11 is a cross-sectional view a-a of a single cam set provided by the present invention.
The reference numbers in the figures are:
the device comprises a base 1, a roller strip assembly group 2, a linear guide rail pair 3, a sliding table 4, a cam assembly group 5, a servo motor 6, a small belt wheel 7 and a synchronous belt 8, wherein the roller strip assembly group is arranged on the base;
21 is a roller mounting bar, 22 is a splicing mounting plate, 23 is a pin shaft, 24 is a first bearing, 25 is a bearing thin spacer, 26 is a second bearing, 27 is a heightening sheet, and 28 is a set screw;
51 is a mandrel, 52 is a third bearing, 53 is a fourth bearing, 54 is a cylindrical cam, 55 is a split type adjusting sheet, 56 is a connecting key, 57 is a synchronous pulley, 58 is a pulley expansion sleeve, and 59 is a lock nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a high-precision linear displacement transmission mechanism capable of being infinitely extended, which is characterized by comprising the following components: a base 1; the roller strip assembling group 2 is arranged on a roller strip mounting base surface in the middle of the top surface of the base 1; the linear guide rail pair 3 is arranged on two sides of the top surface of the base 1; the sliding table 4 is arranged on the linear guide rail pair 3; the cam assembly group 5 is arranged on the bottom surface of the sliding table 4 through a bearing seat; the servo motor 6 is arranged on the sliding table 4, and a small belt wheel 7 is arranged on an output shaft of the servo motor 6; the small belt wheel 7 is connected with an input belt wheel of the cam assembly group 5 through a synchronous belt 8; the cam assembly group 5 is in matched transmission with the roller strip assembly group 2.
In order to further optimize the above solution, the assembly group 2 of roller strips comprises: the roller mounting structure comprises a plurality of roller mounting bars 21, wherein the roller mounting bars 21 are connected through a splicing mounting plate 22, and each roller mounting bar 21 is provided with a plurality of pin holes at the same interval; each roller mounting bar comprises a plurality of rollers, and each roller comprises a pin shaft 23, a first bearing 24, a bearing thin spacer 25, a second bearing 26 and an elevating piece 27, wherein the first bearing 24, the bearing thin spacer 25, the second bearing 26 and the elevating piece 27 are sleeved on the pin shaft 23; the pin shaft 23 is inserted into the pin hole and is pressed and fixed by a set screw 28.
In order to further optimize the above technical solution, the first bearing 24 and the second bearing 26 are both deep groove ball bearings.
To further optimize the above solution, the length of each roller mounting bar 21 is less than 1 m.
In order to further optimize the above solution, the cam assembly group 5 comprises: a mandrel 51, wherein a third bearing 52 and a fourth bearing 53 are respectively arranged at two ends of the mandrel 51; the mandrel 51 penetrates through inner holes of the two cylindrical cams 54, and two first key grooves which are symmetrically distributed are milled on the outer circles of the adjacent end surfaces of the two cylindrical cams 54; both cylindrical cams 54 are disposed between the third bearing 52 and the fourth bearing 53; the split type adjusting piece 55 is arranged between the adjacent end faces, a second key groove corresponding to the first key groove is also formed in the outer circle, and the first key groove and the second key groove are fixedly connected through a connecting key 56 and fixed on the two cylindrical cams 54 through screws; one end of the mandrel 51 provided with the third bearing 52 is locked by a locking nut 56; one end of the mandrel 51 provided with the fourth bearing 53 is sleeved with a synchronous pulley 57, and the synchronous pulley 57 locks the other end of the mandrel 51 through a pulley expansion sleeve 58.
In order to further optimize the above technical solution, the cylindrical cam 54 is a single-lead space cylindrical cam, and the manufacturing thickness of the split-type adjusting blade 55 is larger than the actual thickness.
In order to further optimize the above technical solution, the cam assembly group 5 is a single cylindrical cam group, comprising: a mandrel 51, wherein a third bearing 52 and a fourth bearing 53 are respectively arranged at two ends of the mandrel 51; a cylindrical cam 54, the mandrel 51 passing through the inner hole of the cylindrical cam 54; one end of the mandrel 51 provided with the third bearing 52 is locked by a locking nut 56; one end of the mandrel 51 provided with the fourth bearing 53 is sleeved with a synchronous pulley 57, and the synchronous pulley 57 locks the other end of the mandrel 51 through a pulley expansion sleeve 58.
In order to further optimize the above technical solution, the third bearing 52 and the fourth bearing 53 are both deep groove ball bearings.
In order to further optimize the above technical solution, the top surface of the base 1 is concave.
The invention discloses a high-precision linear displacement transmission mechanism capable of being infinitely extended, which comprises the following working processes: cam assembly components 5 pass through the bearing frame installation face to be fixed on the lower mounting surface of slip table 4, and servo motor 6 installs on slip table 4, installs little band pulley 7 on servo motor 6's the motor output shaft, and little band pulley 7 passes through the input band pulley of 8 connection cam assembly components 5 of hold-in range to it is rotatory to drive cylindrical cam 54, converts linear motion into through screw drive, thereby drives slip table 4 and removes on the base.
Roller strip assembly group includes a plurality of roller mounting strips 21, and a plurality of roller mounting strips 21 are connected through concatenation mounting panel 22, can constantly prolong according to required service length, and unlimited concatenation realizes unlimited extension. Meanwhile, because the actual width of the groove of the cylindrical cam 54 needs to be larger than the outer diameter of the first bearing 24 and the second bearing 26 to smoothly rotate, a fit clearance is generated, because the manufacturing thickness of the split-type adjusting piece 55 is larger than the theoretical thickness, the two first key grooves do not coincide when the spiral of the cylindrical cam 54 coincides, so that when the cam assembly group 3 is installed on the sliding table 4, the connecting key 56 needs to be removed, then the cylindrical cam 54 is installed on the sliding table 4, the cylindrical cam 54 is matched with the first bearing 24 and the second bearing 26, the thickness of the split-type adjusting piece 55 is ground, relative torsional force is applied to the cylindrical cam 54 to enable the two cylindrical cams 54 to be pressed towards the middle due to the matching of the spiral groove and the pushing roller, after the split-type adjusting piece 55 is ground to the proper thickness, the first key grooves of the cylindrical cam 54 are just aligned, the connecting key 56 is placed and locked, and only one opposite surface of each cylindrical cam 54 is matched with the roller, thereby eliminating the gap.
Meanwhile, the roller mounting strips can be spliced and extended like racks and are not limited by length, the cylindrical cam 54 and the roller are in rolling body friction, the service life can be prolonged, the cylindrical cam 54 is in spiral integral transmission, only the speed is reduced by a synchronous belt 8 at a small speed ratio, and the speed is not reduced like a gear-rack large speed ratio speed reducer, so that the input gap is eliminated; and through actual use and test on a machine tool, the precision can reach more than C5 grade of precision grinding ball screw pair through measurement and comparison of a laser interferometer.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A infinitely extendable high precision linear displacement transmission mechanism comprising:
a base (1);
the roller strip assembling group (2) is installed on a roller strip installation base surface in the middle of the top surface of the base (1);
the linear guide rail pair (3) is arranged on two sides of the top surface of the base (1);
the sliding table (4), the sliding table (4) is installed on the linear guide rail pair (3);
the cam assembling group (5) is installed on the bottom surface of the sliding table (4) through a bearing seat;
the servo motor (6) is arranged on the sliding table (4), and a small belt wheel (7) is mounted on an output shaft of the servo motor (6); the small belt wheel (7) is connected with an input belt wheel of the cam assembly group (5) through a synchronous belt (8);
the cam assembly group (5) is in matched transmission with the roller strip assembly group (2);
the cam assembly group (5) comprises: the device comprises a mandrel (51), wherein a third bearing (52) and a fourth bearing (53) are respectively arranged at two ends of the mandrel (51);
the mandrel (51) penetrates through inner holes of the two cylindrical cams (54), and two first key grooves which are symmetrically distributed are milled on the outer circles of the adjacent end surfaces of the two cylindrical cams (54); both of the cylindrical cams (54) are disposed between the third bearing (52) and the fourth bearing (53);
the split type adjusting piece (55) is arranged between the adjacent end faces, a second key groove corresponding to the first key groove is also formed in the outer circle, and the first key groove and the second key groove are fixedly connected through a connecting key (56) and fixed on the two cylindrical cams (54) through screws;
one end of the mandrel (51) provided with the third bearing (52) is locked through a locking nut (59);
one end of the mandrel (51) provided with the fourth bearing (53) is sleeved with a synchronous belt wheel (57), and the synchronous belt wheel (57) locks the other end of the mandrel (51) through a belt wheel expansion sleeve (58).
2. An infinitely extendable high precision linear displacement transmission mechanism according to claim 1, characterized in that said roller bar assembly group (2) comprises:
the roller mounting structure comprises a plurality of roller mounting bars (21), wherein the roller mounting bars (21) are connected through a splicing mounting plate (22), and each roller mounting bar (21) is provided with a plurality of pin holes at the same interval;
each roller mounting bar (21) comprises a plurality of rollers, each roller comprising: the device comprises a pin shaft (23), a first bearing (24), a bearing thin spacer (25), a second bearing (26) and a heightening sheet (27), wherein the first bearing (24), the bearing thin spacer, the second bearing (26) and the heightening sheet are sleeved on the pin shaft (23); the pin shaft (23) is inserted into the pin hole and is pressed and fixed through a fastening screw (28).
3. An infinitely extendable high precision linear displacement transmission mechanism according to claim 2, characterized in that the first bearing (24) and the second bearing (26) are deep groove ball bearings.
4. An infinitely extendable high precision linear displacement transmission mechanism according to claim 2, wherein each roller mounting bar (21) is less than 1m in length.
5. An infinitely extendable high precision linear displacement transmission mechanism according to claim 1, characterized in that the cylindrical cam (54) is a single lead space cylindrical cam, the split adjusting plate (55) is made thicker than the actual thickness and is a full circle shim split in half.
6. An infinitely extendable high precision linear displacement transmission mechanism according to claim 1, wherein the cam assembly (5) is a single cylindrical cam assembly comprising:
the mandrel (51), and the third bearing (52) and the fourth bearing (53) are respectively arranged at two ends of the mandrel (51);
the cylindrical cam (54), the mandrel (51) passes through the inner hole of the cylindrical cam (54);
one end of the mandrel (51) provided with the third bearing (52) is locked by the locking nut (59);
one end of the mandrel (51) provided with the fourth bearing (53) is sleeved with the synchronous pulley (57), and the synchronous pulley (57) is locked at the other end of the mandrel (51) through the pulley expansion sleeve (58).
7. An infinitely extendable high precision linear displacement transmission mechanism according to claim 5 or 6, characterized in that the third bearing (52) and the fourth bearing (53) are deep groove ball bearings.
8. An infinitely extendable high precision linear displacement transmission mechanism according to claim 7, characterized in that the top surface of the base (1) is concave.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810576603.4A CN108547923B (en) | 2018-06-06 | 2018-06-06 | High-precision linear displacement transmission mechanism capable of being infinitely extended |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810576603.4A CN108547923B (en) | 2018-06-06 | 2018-06-06 | High-precision linear displacement transmission mechanism capable of being infinitely extended |
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| CN108547923A CN108547923A (en) | 2018-09-18 |
| CN108547923B true CN108547923B (en) | 2021-05-18 |
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| CN109372966A (en) * | 2018-11-27 | 2019-02-22 | 胡增产 | Novel transmission mechanism |
| CN110027851A (en) * | 2019-03-18 | 2019-07-19 | 刘哲森 | A kind of slide unit based on worm screw tooth row |
| CN109969761A (en) * | 2019-03-18 | 2019-07-05 | 刘哲森 | A kind of double rail type cam bawl slide unit |
| CN111842518B (en) * | 2020-07-09 | 2022-07-22 | 佛山市锦澳五金制品有限公司 | Aluminum profile forming machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4898044A (en) * | 1988-10-26 | 1990-02-06 | Emerson Electric Co. | Cam-driven linear actuator apparatus |
| SE462811B (en) * | 1989-05-09 | 1990-09-03 | Hans Karlsson | DEVICE FOR CONVERSION OF A PROMOTING AND ATTACHING MOVEMENT TO A ROTATING MOVEMENT |
| JP5901052B2 (en) * | 2011-10-03 | 2016-04-06 | テクノダイナミックス株式会社 | Cam device |
| EP3282146B1 (en) * | 2016-08-12 | 2021-06-30 | Ratier-Figeac SAS | Secondary load path dectection |
| CN106352040A (en) * | 2016-11-01 | 2017-01-25 | 杭州三共机械有限公司 | Cam direct acting device and operation method thereof |
| CN207364216U (en) * | 2017-10-20 | 2018-05-15 | 常州市德速机械有限公司 | Cam linear motion device |
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