Patent application number | Description | Published |
20110052316 | Spline Shaft Assembly - A spline shaft assembly includes a rotatable shaft extending along an axial direction and having an outer surface, and a plurality of first grooves formed in the outer surface. A transmission module is formed with a through hole and has an inner surface defining the through hole, and a plurality of axially extending second grooves formed in the inner surface. Each of the first and second grooves is defined by a semi-circular groove-defining wall. The rotatable shaft extends through the through hole. A spline key set has a plurality of cylindrical keys extending along the axial direction and disposed between and engaging the first grooves and the second grooves, and at least two positioning members connected to the transmission module and associated with the cylindrical keys such that the transmission module and the cylindrical keys are co-rotatable. | 03-03-2011 |
20110217908 | Coarse and Fine Grinding/Polishing Machine - A grinding/polishing machine includes first and second grinding units. The first grinding unit is mounted slidably on a column on a base support to move along a Z-axis direction, and has a first grinding wheel. The second grinding unit is mounted slidably on. the first grinding unit to move along a Y-axis direction and has a second grinding wheel aligned with the first grinding wheel. When the second grinding wheel is in a grinding position, the second grinding wheel is situated between the first grinding wheel and a platform mounted on the base support to hold a workpiece. When the second grinding wheel moves away from the first grinding wheel, the first grinding wheel is movable to the platform for a grinding operation. The first and second grinding wheels have different levels of coarseness/fineness. | 09-08-2011 |
20120107064 | CNC Machine Tool Having Two Spindles - A machine tool includes a base, a saddle movable on the base in a front-to-rear direction, a worktable movable on the saddle in a left-to-right direction, a post member disposed fixedly on a rear end of the base, a sliding seat movable vertically on the post member, a first spindle disposed rotatably on the sliding seat, and a second spindle movable vertically and rotatable on the sliding seat and spaced apart from the first spindle in the front-to-rear direction. | 05-03-2012 |
20130031995 | BALL SCREW - A ball screw includes a screw shaft formed with two helical raceways that have the same lead and the same thread angle, a ball nut rotatably sleeved on the screw shaft and formed with two ball grooves that correspond to and complement with the helical raceways, a scraper has two contact parts to contact the two helical raceways, a plurality of bearing balls rollably and selectively disposable between one of the ball grooves and the corresponding helical raceway, and a return unit including two return tubes each having two ends respectively and spatially connected to two ends of the corresponding ball groove. | 02-07-2013 |
20130071052 | Slide Rail Device - A slide rail device includes a guide rail, a slider slidable along the guide rail, and a pair of cylindrical roller train sets disposed at two opposite sides of the guide rail. Each cylindrical roller train set is disposed between the guide rail and the slider, and has a plurality of cylindrical rollers. Each cylindrical roller has a first roller surface portion and a second roller surface portion that is recessed relative to the first roller surface portion. The first roller surface portions of the cylindrical rollers are in rolling contact with the guide rail and the slider, and the second roller surface portions of the cylindrical rollers are free of contact with the guide rail and the slider. | 03-21-2013 |
20140323280 | CNC MACHINE TOOL WITH A SINGLE-SPINDLE AND TWO SETS OF CUTTING TOOL CHANGERS - A CNC machine tool with a single-spindle and two sets of cutting tool changers, includes a machine unit, a first cutting tool changer, and a second cutting tool changer, wherein the machine unit comprises a machine body, a processing spindle head, a working table, a spindle, and cutting tools. The first cutting tool changer comprises a first cutting tool magazine arranged on one side of the machine body, a first cam driving mechanism, and a first cutting tool exchanging arm, wherein the first cutting tool exchanging arm is able to exchange the cutting tools respectively located within the first cutting magazine and located on the spindle. The second cutting tool changer has the same structure and function as the first cutting tool changer. Therefore, it is able to manage a huge number of cutting tools so as to apply to long-term and non-stop cutting process and improve the production efficiency. | 10-30-2014 |
20150030407 | TOOL SHANK - The tool shank contains a taper member, a flange member, a holder member, a clamped member, and a number of slits. The taper member has a conic shape extended along an axial direction with a top section and a bottom section. The flange member is beneath the bottom section of the taper member. The holder member is extended downward from a bottom side of the flange member along the axial direction. The clamped member is extended upward from the top section of the taper member. The slits are configured at intervals around the bottom section surrounding the axial direction. Each slit defines a slightly outwardly bulge. The bulges increase the contact area with and avoid gaps to a tapered socket of a spindle. As such, the tool shank is tightly jointed to the spindle during high-speed rotation without causing vibration and damage. | 01-29-2015 |
20150119215 | SINGLE POWER TOOL CHANGING DEVICE OF CNC MACHINING CENTER - A single power tool changing device of a CNC machining center includes a tool magazine unit, a cam-based tool changing unit, and a power clutch unit. The tool magazine unit includes a tool magazine body, a rotatable disk, and a plurality of tool sets. The cam-based tool changing unit includes a tool change base, a cam mechanism, and a tool changing mechanism. The power clutch unit includes a first force output axle that drives the tool magazine unit to operate, a second force output axle that drives the cam-based tool changing unit to operate, and a power mechanism, which selectively transmits power to the first or second force output axle. As such, the present invention allows for performance of both operations of tool selection and tool change with a single driving power source so as to achieve an advantage of reducing installation cost. | 04-30-2015 |