Abstract:
A circulating element for ball screw includes a first surface defining a circulating passage that extends from one lateral side of the first surface to the other lateral side of the first surface and has a coupling mouth located on each of the two opposite ends thereof, and a second surface defining a coupling groove between the two coupling mouths of the circulating passage and two guide blocks respectively protruding out of the coupling mouths of the circulating passage. Thus, the circulating element has the advantages of low processing cost, ease of installation, high alignment accuracy, and excellent running smoothness.
Abstract:
A support structure for a ball screw includes a base, two pivot seats mounted on the base, a screw disposed between the two pivot seats, at least one guide rail fixed on the base, a first guide block fixed on the base and provided with a first slanting surface, a second guide block fixed on the base and provided with a second slanting surface, a support seat slidably mounted on the guide rails and located below the screw, a nut unit sleeved on the screw and slidably disposed on the guide rails, and a drive assembly fixed at the nut unit. The support structure for a ball screw has a simple structure, a low maintenance cost and a longer service life.
Abstract:
A SCARA robot includes a base, a first arm mounted at the base and rotatable on a first imaginary axis, a second arm mounted at the first arm and rotatable on a second imaginary axis, a shaft motor including a fixing member mounted in the second arm and an axle movable relative to the fixing member along a third imaginary axis that is substantially parallel with the first and second imaginary axes, and a rotary motor mounted in the second arm and adapted for rotating the axle on the third imaginary axis. Thus, the SCARA robot facilitates operational control, improves operational precision, voids quick wear of component parts, and lowers maintenance costs.
Abstract:
A linear motion guide device includes a slider slidably attached onto a guide rail, two dust caps oppositely attached to end portions of the slider respectively and each having a channel formed between two legs for slidably engaging with the guide rail, and each having a lip portion directed toward the guide rail for wiping the engaging surface of the guide rail, and the lip portions of the legs of the dust caps each include an inner flange directed toward the slider and each include a number of notches and a number of projections formed in the inner flange of each of the legs and offset from each other for wiping the lubricating fluid into the notches of the legs respectively.
Abstract:
In order to reduce the cost of robotic arm, the invention provides a robotic arm, which includes an arm member having a first pivot connection portion, a locating member affixed to the arm member, a sliding member movably mounted at the locating member, a stop member affixed to the sliding member, a wrist member having a second pivot connection portion pivoted to the sliding member and a third pivot connection portion movable relative to the second pivot connection portion, and a driving device including a body member pivoted to the first pivot connection portion and an extension member pivoted to the third pivot connection portion of the wrist member and movable relative to the body member. Using the locating member, the sliding member, the stop member and the wrist member to match with the driving device, the robotic arm achieves the effect of moving and swinging and cost reduction.
Abstract:
A bearing with antiskid design used in combination with a circular spline to form a harmonic drive, and the circular spline is provided with an inner toothed portion, the bearing includes: an elliptical gear plug, a flexible ball bearing, and a flexible spline. Between the flexible ball bearing and the flexible spline are disposed a first and second antiskid members, and the arrangement of the first and second antiskid members prevents the axial slippage between the flexible ball bearing and the flexible spline, thus improving stability and transmission accuracy of the harmonic drive.
Abstract:
The invention provides an external circulation type ball screw device comprising screw shaft and nut having first and second screw grooves. A circulation member comprises first leg, second leg and connection portion. The first leg comprises a first end surface having first inner and outer points, and the second leg comprises a second end surface having second inner and outer points; first and second entrances formed on the first and second end surfaces of circulation passage; first and second thickness respectively provided between the first entrance and the first inner and outer points thereof; the second thickness being greater than the first; the third and fourth thickness respectively provided between the second entrance and the second inner and outer points thereof; the fourth thickness being greater than the third. The groove wall of the second screw groove occupied and the occurrence of broken teeth of the nut are reduced.
Abstract:
A motion transmission module with a cooling device is aimed at solving the disadvantage of the conventional motion transmission module that the cooling structure of the conventional motion transmission module would increase the length or outer diameter of the nut. The nut is formed with a flat surface for mounting the cooling device, so that the length of the nut won't be increased. Furthermore, the cooling device also serves as a positioning block to fix the return member, it doesn't increase the outer diameter of the nut.
Abstract:
A feeding device includes a fixing base. A motor is fixed to the fixing base. The motor has an output axle. A transmission axle is fixedly connected to the output axle. The feeding device further includes a feeding block having a side fixedly connected to the transmission axle. The feeding block has a feeding notch. The feeding notch is formed around the transmission axle circumferentially. Hence, once a slender material enters the rotational space of the feeding block, the motor drives the feeding block to rotate, whereas the slender material is pressed by the feeding notch of the feeding block and sent out as a result of the continuous rotation of the feeding block. Hence, the feeding device not only enables continuous material conveyance but also allows the slender material to be conveyed smoothly even when the slender material is slightly bent or deformed.
Abstract:
A robotic arm includes a first transmission module, a second transmission module, and a third transmission module. The first transmission module provides a first driven gear to connect with the second transmission module and provides a first fixed gear to engage with a first planetary gear of the second transmission module. When the second transmission module is driven by the first driven gear, the first planetary gear is rotated and revolved around the first fixed gear. The second transmission module uses a second driven gear to connect with the third transmission module connected with a surgical instrument. When driven by the second driven gear, the third transmission module drives the surgical instrument to act. As such, the robotic arm of the present invention is only equipped with a single actuator to achieve an effect of multi-arm linkage.