TWI263745B - Recirculation device of ball screw - Google Patents

Abstract

The present invention relates to the recirculation device of ball screw, the recirculation device complete the circulating route of the balls rolling. The characteristic of the recirculation device is make up of the reflow element and the fasten element, the reflow element inset the hole in the nut, and there is a trough on the inner wall of the hole, cause the fasten element stick in the trough of the hole to fixed the reflow element in the hole.

Description

1263745 V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field The present invention relates to a reflow device in which a ball is placed in a nut that is worn in a ball screw, and the reflow screw and the nut are responsive to each other. And complete the cycle scrolling, let ', the movement of each other to transmit power. [Prior Art] The rolling of the ball screw of the mesh is shown in the figure, that is, there are many ways for the nut to be reflowed from the white and the beans by the nut car, wherein the tenth plug 50 is fixed to the end face of the nut 4 and is a reflow mode. In the end plug of the figure > rolling element (not shown), the end plug 50 is provided with a direction to push the end plug fixing groove 41 from the 51 'end plug 50 along the nut The shaft of the 4 〇 is located at the end of the nut 4 〇 end of the fixing groove ^ end plug 50 of the axial positioning portion 5 2 degrees, and then the fixing screw 6 〇 to limit the end of the end plug 5 自 from the end plug 50 The locking hole 53 is engaged with the fixing hole 42 of the fixing screw=〇 and passes through the degree of freedom. The snail is assembled in this way, and it is difficult to limit the diameter of the end plug 50, and the assembly fittings thereof are complicated, and the end plug fixing groove 4 1 is processed and long, and the matching screw must be added. It is not easy to assemble and the screw is assembled. , teeth, not suitable for unexposed teeth ^ In summary, the traditional linear slip is necessary. The reflow mechanism has been improved and improved. [Invention] The present invention relates to a ball screw and a cap which are assembled on a screw. The #rolling body is placed at ^= ι, and the ball screw _______, /, rolls to cause relative movement. Page 1263745 V. Description of the invention (2) The inner diameter of the nut is on the inside of the nut. The inner rolling element is screwed into the inner diameter of the nut, and the inner and outer diameters of the nut have a side. The through hole is returned to the hole, and a plurality of radial holes are arranged outside the snail: the radial hole is read, and the inner hole of the nut is connected and the π + hole is connected. In the radial i-slot, f is provided with a recirculating device to have a steering path in the crucible to connect the inner screw and the return flow of the screw 2, so that the moving body has a complete rolling loop path and can be turned back to the flow. Rolling and rolling, let the screw and nut meet each other: move to transmit power. Because of this hair:; the fun flow is set by the outer circumference of the nut, so the matching screw can be used with or without teeth. Then, the present invention designs the reflow device to be a combination of two components, that is, a reflow device composed of a reflow member and a buckle member, and a structure for providing a function of rolling the rolling body to the reflow function is designed in the reflow member, and the buckle component is mainly Provides a fixed function. Therefore, the steering path is disposed in the reflow element, and the outer circumference circle is further provided with a matching curved surface to match the inner diameter of the nut and the outer diameter of the screw, so that the reflow element can be placed in the radial hole groove locally, and travels in the radial hole groove. The inner wall of the hole is designed with a buckle groove, so that the snap element can be buckled into the buckle groove to fix the return element in the radial hole groove. Furthermore, the present invention has an opening along the normal direction of the buckle to the groove of the hole groove, and the size thereof is slightly smaller than the buckle groove, so that the original groove-shaped buckle groove becomes a groove-shaped buckle groove. The snap element is snapped into the buckle groove very easily and conveniently. In addition, the present invention considers the ease of processing of the nut, so that the shape of the reflow element can be designed as a slightly cylindrical or square cylinder, so that the diameter of the nut can be designed as a simple radial hole. Or radial square holes to match the reflow

1263745 V. INSTRUCTIONS (3) The outer shape of the component can reduce the difficulty of the nut processing; and the reflow element is provided with a positioning pin, and a positioning hole is arranged in the radial hole of the nut to strengthen the positioning of the reflow element. The snap element of the present invention can also be a C-shaped buckle or a square buckle of a general market standard, which makes the part quite convenient and inexpensive. [Embodiment] The first figure is a schematic exploded view of the nut of the ball screw of the present invention; wherein the inner diameter of the nut 10 has an internal thread 1 1 so that the rolling body (not shown) can be rolled into the ¥, An axial return through hole 12 is defined between the inner and outer diameters of the nut 10, and a plurality of radial holes 13 are formed in the outer circumference of the nut 10, and the radial holes 13 are radially worn. The inner and outer diameters of the nut 10 are transmitted through, and the internal thread 1 1 and the return through hole 1 2 are connected; and the reflow device 20 is disposed in the radial hole 13 of the nut 10, and the reflow device 20 A reflow element 21 and a snap element 22 are included. The second drawing is a detailed view of the reflow element of the reflow device of the present invention; the reflow element 2 1 of this embodiment has a slightly cylindrical shape, and a side end surface of the reflow element 21 has a positioning pin 2 1 4 to provide a reflow element 2 1 Positioning, the reflow element 21 is provided with a steering path 211 for connecting the internal thread 11 and the return through hole 12 of the nut 10 in the first figure, and a matching curved surface is provided on the outer circumference of the reflow element 2 1 > 2 1 3 Engaged with the inner diameter of the nut 10, and a steering piece 2 1 2 is disposed at the steering path 2 1 1 of the matching curved surface 2 1 3 to make the rolling element in the internal thread 1 1 of the nut 10 (not drawn Out) is guided into the steering path 2 11 and turned to the reflow. - The third figure is a schematic view of another embodiment of the reflow element of the present invention; the reflow element 2 of this embodiment has a slightly flattened square cylinder which can provide different

Page 8 1263745 V. Description of the Invention (4) The reflow element 23 is also provided with a turning path 2 3 1 for use, and the revolving element 2 3 is also provided with a matching curved surface 2 3 3 and a turning piece 2 3 2, the rolling body (not shown) is guided into the steering path 2 3 1 and turned to the reflow, wherein the positioning pin 243 of this embodiment is disposed on the inner side of the one end flange, and the reflow element 23 can be positioned In the radial bore of the nut (not shown). The fourth drawing is a schematic diagram of the assembly of the reflow device of the present invention (1); the fifth drawing is a schematic diagram of the assembly of the reflow device of the present invention (2); the sixth drawing is a schematic diagram of the assembly of the reflow device of the present invention; The reflow element 2 1 is placed in the radial hole 13 in the radial direction of the nut 10, and a positioning hole 133 is defined in the radial hole 13 and a groove 131 is formed in the inner wall of the hole. The size of the 3 1 is matched with the size of the buckle element 2 2 , and the buckle groove 13 1 has an opening 1 3 2 in the normal direction, and the opening 1 3 2 is slightly smaller than the diameter of the buckle groove 1 3 1 , and the card component 2 2 The opening 1 3 2 along the normal direction is pushed into the buckle groove 13 1 to fix the return to the radial hole 13 and the assembly of the reflow device 2 is completed. The seventh figure is a cross-sectional view of the A-A of the sixth figure; wherein when the reflow element 21 J ϋ t! where the piece 22 is fixed, the turning path 2 11 in the reflow element 2 1 is connected to the inside of the nut 1 The complete cold private alpha thread 11 and the return through hole 12 enable the rolling body 30 to have a positive rolling cycle

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1263745 V. INSTRUCTIONS (5) The inner wall of the hole is designed with a ring-shaped (square) buckle groove 丨3 1 (1 4 1 ) ' at the outer diameter of the nut 丨〇 在 3丨 (丨4丨) The line direction has an opening 丨3 2 (丨4 2 ), the opening 1 3 2 (1 4 2 ) is slightly smaller than the diameter (side length) of the buckle groove 1 3 1 (1 4 1 ), and the ring (square) buckle The element 2 2 ( 2 4 ) is pushed toward the buckle groove 131 (141) in the direction of the opening 1 3 2 ( 1 4 2 ) as shown in FIG. 8A (FIG. 9A), when the snap element 22 (24) is from the opening 13 2 ( 1 4 2 ) When entering, since the opening 1 3 2 ( 1 4 2 ) is slightly smaller than the snap element, 2 2 ( 2 4 ), the snap element 2 2 ( 2 4 ) is pressed and temporarily generated. The deformation is as shown in Fig. 8B (Fig. 9B). After the buckle member 2 2 ( 24 ) is completely pushed into the buckle groove 1 3 1 (1 4 1 ), the pressing force disappears and the buckle member 2 2 ( 2 4 ) The size of the original 10 is restored again, and the snap element 2 2 ( 2 4 ) does not fall out of the opening 1 3 2 ( 1 4 2 ) because the opening 132 (142) is slightly smaller than the outer diameter of the snap element 22 (24). Therefore, it can be closely attached to the buckle groove 1 3 1 (1 4 1 ) of the inner wall of the radial hole groove 1 3 (1 4 ) of the nut 1 Flow element 21 (23) in FIG. 8 C (FIG. 9 C). In summary, the 'return device of the ball screw of the present invention' can provide a large amount of industrial use, and the high value of the industry is indeed an innovation and it is not found in any public documents or exhibitions, so it should fully meet the novelty and progress. The statutory patent requirements, 提出 apply in accordance with the law, I ask you to approve this invention

Page 10 1263745 Brief description of the drawings [Simplified description of the drawings] The first figure is a schematic view of the nut of the ball screw of the present invention. The second figure is a detail of the reflow element of the reflow device of the present invention. The third figure is the reflow element of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a schematic view showing the assembly of a reflow device of the present invention. FIG. 5 is a schematic view showing the assembly of the reflow device of the present invention (2), and FIG. 6 is a schematic view showing the assembly of the reflow device of the present invention. 6 is a cross-sectional view of the AA of FIG. 6 is a schematic view of the fastening mechanism of the buckle component of the present invention. FIG. 9 is a schematic view of the fastening mechanism of the buckle component according to another embodiment of the present invention. FIG. 10 is a nut of a conventional ball screw. Schematic [Description of main components] 10 Nut 11 Internal thread 12 Back flow hole 13 Radial hole groove 131 Buckle groove 132 Opening 133 Positioning hole 14 Radial hole groove 141 Buckle groove 142 Opening π 20 Reflow device 21 Return element 211 Steering path 212 steering piece 213 S self-closing surface 214 positioning pin 22 snap element 23 return element 231 232 has positioning pins 234 bonded to the curved surface to the sheet path 233 i

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Claims (1)

1263745 VI. Patent application scope 1. A ball screw reflow device, the nut of the ball screw is sleeved on the screw, and the relative movement of the rolling element is caused by rolling between the rolling elements, and the inner diameter of the nut has an internal thread to cooperate with the above a screw for rolling the rolling element therein, wherein the nut has an axial return through hole, and a plurality of radial holes are formed in the outer circumference of the nut, and the radial hole penetrates the snail radially The inner and outer diameters of the cap, _ and the internal thread and a return through hole are connected; and the reflow device is disposed in the radial hole of the nut, the reflow device mainly comprises a reflow element and a snap element, the reflow The component has a steering path for connecting the internal thread of the nut and the return through hole, so that the rolling body has a complete rolling circulation path; and a groove is formed in the inner wall of the hole of the radial hole, and the groove is The above-mentioned snap-in element is fastened to fix the above-mentioned reflow element in the radial hole slot. 2. The ball screw reflow device of claim 1 wherein the reflow element is provided with a positioning pin and a screw A positioning hole is formed in the radial hole of the cap to provide positioning of the reflow element. 3. The ball screw return device of claim 1, wherein the snap element is a C-shaped buckle. 4. The ball screw reflow device of claim 1, wherein the radial groove is provided with an opening, the opening of which is slightly smaller than the diameter of the buckle groove. 5. For example, the ball screw return device of claim 1 of the patent scope, in which Page 13 1263745 Page 14