TWI221177B - Assembling reflow device of ball screw - Google Patents

Abstract

The present invention relates to assembling reflow device of ball screw which includes the reflowing block and the deflecting piece. The characteristic of the assembling reflow device is that it can be co-used in ball nuts with different lead angles, so as to decrease the number of molds and reduce the cost of ball screw.

Description

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[Technical field of Wuming] The present invention relates to a recirculation device for a ball screw furnace * 丄, a rod, the reflow, ^: end-use plug ... It is a ball screw flow to complete the cycle rolling, let the screw u, screw inside The ball can turn back. /, The cup and the nut move with each other to transfer the moving ball return device, the device and the end plug type on the ball screw enable the ball to turn to the surface 31 shown in the eleventh figure and the end plug 30 with the screw to fix the plate 35, Because the ball flow is circulated and the flow device is high, it usually has end plugs with different outer diameters and different specifications, which will also be very high. Necessity for good advancement [Previous technology] General ball screw flow device, internal circulation type return plug type return device is equipped with a plug to connect the screw thread and the return hole. Traditional end plugs are shown in the tenth figure and are matched with nuts. The bottom end plug 30 is provided with a fixing hole 33 and also provided with a turning path 34 and a cover 35 to guide and turn to complete the traditional end plug rework, which is not easy, and the processing cost is also very high. However, different screw and ball diameters will produce different molds. The mold is made. The end plug of the ball screw has been changed. It is usually divided into an external circulation type backflow device; only the end face of the nut is used to complete the backflow cycle. And 'where both sides of the end plug 30 are fitted with the upper curved surface 32 and are on the nut; the end plug 30 is complicated in the shape of the turning path 34 and the cover plate, and the processing system uses an open mold injection method to make the thread lead angle or Different ^ and each specification is open-so combining the above, the traditional [inventive purpose]

Page 4 1221177 V. Description of the invention (2) The purpose of the ball screw common end plug of the present invention is to provide an end plug that can be used in ball screws with different lead angles, so it can reduce the setting of different lead angles. Mold to reduce manufacturing costs. [Summary of the Invention] The present invention first studies the functional structure of the end plug, and finds that the most important functions of the end plug are the steering path and the flap, and the structural size of the end plug is affected by the three factors of the screw outer diameter, thread lead angle and rolling element diameter. influences. Therefore, the structure size of the end plug to be designed in the present invention is only affected by one factor, and the manufacturing cost of the overall mold opening will be greatly reduced. Secondly, the present invention removes the turning path of the end plug and the baffle structure from the original end plug. At this time, the structure size of the end plug body is only affected by a factor of the screw outer diameter, which can reduce the number of molds. Therefore, the present invention Design an end plug body mold without a turning path and a flap structure, and manufacture an end plug body without a turning path and a flap structure by injection molding. Therefore, as long as the screw outer diameter is the same regardless of the thread lead angle and rolling element diameter Change, only need to open a set of molds, so can reduce the cost of a considerable number of molds. Then, the injection molded plug body is processed to match the diameter of the rolling element to produce a turning path suitable for the lead angle of the thread, and an appropriate stopper structure is added to the curved surface above the plug body to guide the roller. The moving member enters the turning path to complete the return cycle. Furthermore, the present invention further studies the turning path of the end plug body. The turning path connects the thread of the nut with the return hole, so that the rolling elements in the thread can be turned into the return hole to complete the return cycle. So the turning path needs to include

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Extend the production from the screw thread lead angle of the nut; ^ 丨 Xi Ai extends the tangent line and changes the angle to connect to Huili 1 person ~ Yue Ma to reduce the part and time of the tool processing, when the board is timing, it will turn Path peu. ,, ^ — 1 part < curve part added, so the body of the ^ plug after opening the core just needs to be ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^, and the thread has 4 passes The tangent part is processed, that is, the tool processing time of the curve part. In addition, because the baffle structure of the present invention and the end plug body are mutually matched, the stability of the baffle body to the positioning and the increase of the baffle's invention is stable in the end plug body piece: this can facilitate the combined positioning and increase the burden, In order to further understand the features and technical contents of the present invention, please provide the following description of the embodiment of the present invention and the drawings < however, the second embodiment of this embodiment is for illustration and reference only, and is not intended to limit the present invention in any way. [Embodiment] The first figure shows the common end plug of the ball screw of the present invention is applied to :: Schematic: where the common end plug 20 is set at the matching end of the screw 20 "screw (not shown) of the ball screw The rolling element 40 can complete the cyclic rolling. The door recirculates and the second picture is a three-dimensional stand of the ball screw common end plug of the present invention; wherein the end plug body 21 and the blocking piece 22 are composed in a combined manner, the plug The main body 21 and the blocking piece 22 are respectively fixed on the nut 10 of the first figure, and a plurality of ball screws with different lead angles are shared. ^ The third figure is a three-dimensional view of the end plug body of the present invention after injection molding.

1221177 V. Description of the invention (4) --- The two sides of the end plug body 2 1 are the bottom surface 2 1 mated with the nut and the upper curved surface 2 1 2 mated with the rod, and a fixing hole 2 is provided on the outside thereof 3 The main body 21 is fixed to the nut. The fourth figure is the rear view of the turning path of the end plug body in the third figure; the fifth figure is the three-dimensional view of the turning path of the end plug body in the third figure; the end plug 2 丨 according to the nut = = Machining a turning path 214, and the turning:] 214 leads? Bend = hole, so that the rolling elements in the thread groove can be turned back into the ring-ring; the bottom surface 211 of the end plug body 21 is matched with the nut:

Lt two sides 212 are matched with the screw (not edged out) when rolling; from =: two heads: when the groove is to enter the end plug body 21, because the upper curved surface 212 is present; the rolling element changes the original direction of movement. ;:: = = = Stronger than the upper surface 212 and the upper surface is not easy to fit, and the combination with the end plug body. -Self-contained surface 215, in order to facilitate the blocking piece to allow the rolling element to smoothly enter the steering route nut thread lead angle extension tangent and [▲, the turning path includes the curved part of the return hole; '^ 二, and the transformation angle to connect To match the nut i: i = Italian V / in the end plug body 21 ...: there is an upper surface of the end plug body 21a fixed to cooperate with the screw. The difference lies in the rotation hole 213 after injection molding. And the curve part 2 1 4a of the differential re-export of this embodiment has been formed, because 1221177 V. Description of the invention (5) This can reduce the part and time of tool processing. The seventh figure is the detailed diagram of the second part of the stretcher. The intention of another embodiment of the flap is that the flap 22 has a steering portion 2 2 1, a guide portion 2 2 2, a mating portion 2 2 3, and a fixing portion 2 2 4 or 2 2 5 and so on, the steering portion 2 2 1 has an arc-shaped curved surface structure, which can be used to change the direction of movement after the rolling member strikes, and enters the turning path of the end plug body along the guide portion 222, and the mating portion 2 2 3 of the baffle plate 2 is matched with the end wall body The surface is matched, and then the blocking piece 2 2 is fixed on the nut by the fixing portion 2 2 4 of the external thread (or the fixing portion 2 2 5 of the internal thread). The ninth figure is a schematic diagram of another embodiment of the 'ball screw common end plug' of the present invention; wherein the common end plug is also composed of an end plug body 21 and a blocking piece 22, and the blocking piece 22 is also provided on the end plug body. 21 is a curved surface 212, and an engaging mechanism is provided at the position where the end plug body 21 and the blocking piece 22 match, that is, a plurality of engaging holes 216 are provided on the mating surface 215 of the end plug body 21, and the mating portion of the blocking piece 22 223 is provided with an engaging bolt 2 26, and the blocking piece 22 can be set into the appropriate engaging hole 216 according to different nut lead angles to facilitate the combined positioning and increase the stability of the blocking piece 2 2 Sex. To sum up, this case not only uses the conventional technology to enhance the above-mentioned statutory invention patent elements of multiple steps, and approves this invention patent application. It is indeed an innovation in space type, and can be more effective. Jin Yu submitted Yin's request in accordance with the law, and urged your bureau to invent it to the utmost convenience.

1221177 Brief description of drawings [Simplified description of drawing numbers] The first diagram is a perspective view of a ball screw common end-plug applied to a nut according to the present invention. The second diagram is a perspective view of a ball screw common end plug of the present invention. The third figure is the injection of the end plug body of the present invention. The formed perspective view. The fourth view is the front perspective view of the end plug body after the turning path is processed in the third figure. The fifth image is the end plug body after the turning path is processed in the third figure. The opposite perspective view. The sixth figure is the third embodiment of the plug body after injection molding. Another embodiment is not intended. The seventh figure is a detailed schematic view of the flap of the second figure. The eighth figure is another of the seventh figure. The ninth figure is a schematic view of another embodiment of the ball screw common end plug of the present invention. The tenth figure is a front perspective view of a traditional ball screw end plug. The eleventh figure is a ball screw end plug of the tenth figure. 3D schematic diagram of the reverse side [representative symbols of main components] 10 Nut 20 Common end plug 21 End plug body 21 1 Bottom surface 212 Upper curved surface 213 Fixing hole 214 Turn V 214a path curve portion 216 has an engaging hole engaging surface 215 unitary

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Claims (1)

1221177 VI. Application for patent scope 1. A ball screw common end plug is provided at one end of a ball screw nut and a screw. The structure of the common end plug mainly includes: an end plug body, the two sides of which are the same as the above The bottom surface fitted with the nut and the upper curved surface matched with the screw, and the end plug body has a turning path, which guides the rolling elements to turn back to complete the cyclic rolling; the flap is provided on the side of the curved surface above the end plug body and turns The path is matched, and its function is to guide the rolling element into the turning path, so that the rolling element needs to be turned back to complete the cyclic rolling; it is characterized by: Wherein, the end plug body and the baffle of the above-mentioned common end plug are combined, and the end plug body and the baffle are respectively fixed on the above nuts to provide a plurality of ball screws with different lead angles. Therefore, the number of molds with different lead angles can be reduced and the manufacturing cost can be reduced. 2. If the ball screw common end plug of item 1 of the patent application scope, the end plug body is provided with an engaging mechanism at the place where the stopper is matched. 3. If the ball screw shared end plug of item 2 of the patent application, the engaging mechanism of which is matched with the engaging bolt and the engaging hole, the engaging mechanism can position the baffle in an appropriate position according to different guides. 4. If the ball screw common end plug of item 1 of the patent scope is applied, the end plug body is firstly injection-molded, and then a variety of leads are used to process the complete turning path with the tool. Page 11 1221177 6. Application for patent scope 1 ί 5. If the ball screw common end plug of item 1 of the patent application scope, the I end plug body has a curved part of the turning path when injection molding, and then cooperate! Various leads use the cutter to process the tangent part of the turning path. The line part and the tangent part are connected to form a complete turning path. 6. If the ball screw common end plug of item 1 of the patent application scope, the baffle is provided with a fixing part, so that the baffle can be fixed on the above nut. 7. If the ball screw common end plug of item 6 of the patent application is applied, the fixing part of the baffle is internal thread, so that the baffle can be fixed on the above nut. 8. If the ball screw common end plug of item 6 of the patent application is applied, the fixing part of the baffle is external thread, so that the baffle can be fixed on the above nut. Page 12