TWI329719B - A nut rotation type ball screw lubrication system - Google Patents

Description

IX. Description of the Invention: [Technical Field of the Invention] The present invention is a nut-rotating ball screw of a ball screw. [Prior Art]

The nut rotary ball screw system connects the nut and the shaft to the working platform (4), and the power motor uses t: to transfer the power to the nut, so that the nut rotates relative to the screw, and will turn The torque is converted into an axial motion to drive the working platform.

Especially refers to a kind of inertial force with lubrication ==_ rotation, used for slender ratio: dry and fast feed 'can be selected for smaller drive motor; 1 mainly used in semiconductor machinery, woodworking machines, conveyors, etc. .., the importance of today's various industrial applications and equipment is not sufficient. However, U.S. Patent No. 5,798,738, and No.67326 discloses a lubricating device for a nut-rotating ball screw. The bone mode of the structure is as shown in the fifth figure, and the bearing outer ring g 4 ◦ A permanent perforation 914 is provided to connect the external lubrication device and the inside of the bearing g 4 , and the nut 92 is also provided with a through hole 9 2 i so that the external lubricating device can transfer the lubricating grease into the nut 92 to The lubricating screw 9丄 and the ball 9 3(4) are achieved. However, the lubrication method has at least the following problems: 1. The inner thread 9 2 0 and the thread groove of the processing cap on the nut 9 2 and the bearing outer ring 9 4 〇 Processing will be roughly rolled: the overall rigidity of the screw) 'relatively will cause the overall rigidity. " First, its lubricating grease must be filled with the inner end of the nut 9 2 to the thread of the screw 9 1 and the nut 9 2 ^ 〇 internal thread 9 2 Q 'can not determine whether there is lubrication The effect (so the turbid structure must be forced to oil to continue effective turbidity). Lidi is applied to the lubrication device on the general ball screw. For example, it is disclosed in the U.S. Patent No. 6 4 0 8 8 that the end face of the nut is provided with self-lubricating oil 2: box=storage grease, and has a lubricating device contact nut 1 Month, the problem can not be used in the nut rotating ball screw, because ^ phase solid = on the nut, the fuel tank will make a rotary motion, in the absence of forced oiling under the armpit "rotation will cause centrifugal force will cause the lubricant to attach It is on the inner tube wall and therefore cannot be effectively lubricated. SUMMARY OF THE INVENTION The above-mentioned S-shaped nut-rotating ball screw lubrication device is invented by the present inventors, and the invention of the following invention is finally achieved.

P, the primary purpose of the present invention is that the A system can supply (4) the transmission and (4) the external strong additional processing. The other purpose is not required to be near the rolling track near the nut for the above purpose. The rotary ball screw comprises a nut cup with a lubricating device, and a threaded groove bearing external nut is arranged thereon, which comprises a bearing outer ring and a nut 'the shaft' 2: the machine The outer edge of the bearing outer ring is sleeved on the outer edge of the outer ring 1 and provided with a recess; the outer ring of the bearing is respectively provided with a second rolling surface and - the opposite of the m snail (four) is sleeved on On the lang pole, the Yusaki has a scrolling groove of the text 'The nut is provided at each end - the cap is connected to the drive member and is driven by the drive member; 'The system is placed between the first rolling surface and the second rolling surface; the dry inner rolling member is placed between the thread groove and the rolling groove; the I month device 'includes a kit and a guide bow I The kit is an end face of the outer casing of the bearing, and the guiding member is fixed on the end surface 1 of the nut and is synchronous with the stomach of the screw; the kit is sleeved on the sleeve The guide member is rotated on the guide member; and the guide member is rotated relative to the sleeve; 1329719, the sleeve is made of m, the end of which is a completely open end, and the end of the end is provided with a flange, the flange is The utility model is fixed on the recess of the outer ring of the bearing; the other end of the set is provided with a perforation, and the kit is provided with an oil hole at the outer edge of the perforation, wherein the oil hole is provided with a grease nozzle, wherein the oil nozzle is provided There is a oil channel;

The guiding member is a hollow structure, and each of the two ends is provided with an extending portion and a protruding portion, and the extending portion is matched with the through hole of the sleeve (to rotate the two), the protruding portion The screw is formed on the accommodating groove of the nut, and the outer edge of the guiding member is provided with a spiral portion, and a spiral groove is formed between the spiral portions, and both ends of the spiral groove are respectively provided with an oil hole; a connecting portion is connected to the guiding member, and the guiding member is provided with a through hole on the outer side of the p-level portion, the through hole is communicated with the spiral groove, and the step portion is connected to the After the kit is matched, a confluence space is formed, and the step portion is arranged to extend the mating surface of the kit and the guiding member so as not to be filled with lubricating grease due to the pressure 33, and form the confluent space, and the confluence space is The through hole communicates with the oil passage of the nozzle provided on the oil hole of the kit, and the lubricating grease flows into the confluence space through the oil passage of the nozzle, and then flows into the through hole of the guiding member through the confluence space (because The guide member rotates relative to the sleeve, so the oil hole of the kit and the guide bow The through hole of the piece cannot be aligned, so it is necessary to set the confluence space to indirectly transfer the lubricating grease to the spiral groove). 1329719 The brush is provided with a thread groove corresponding to the screw to the brush. The 容' is disposed at the end of the nut and the accommodating groove of the sleeve; 'The (4) face of the kit is matched with the outer edge of the guide member, the extension provided by the guide member and the perforation recognized by the kit, and the class set by the guide member The cooperation with the kit is a clearance fit. In order to clarify the implementation features of the present invention, the following description shows the advantages and practical ways of the present invention: 1. The power of the lubricating device can be driven by the nut to force the lubricating oil to the screw. Or on the nut. 2. The one piece of the invention has a simple configuration and can be manufactured by a mold. 3. No additional nut machining procedures are required. For further understanding of the features and technical contents of the present invention, please refer to the following description of the embodiments of the present invention and the drawings. However, the embodiment 2 is only for the lang and the reference, and the invention is not limited. [Embodiment] The present invention relates to a nut rotary ball screw with a lubricating device, comprising: a screw 1 having a thread groove 1 1 thereon; a rotary nut 2 comprising a bearing outer ring 2 1 and - nut 2 2 'the outer edge of the bearing outer ring 2 1 is sleeved on the machine table, the inner edge of the outer ring 2 1 is sleeved on the outer edge of the nut 2 2 , the outer ring of the bearing The outer edge of one of the two ends is provided with a recess 2 i 2 ; the nut 22 is opposite to the outer part of the bearing 2 2 1 and is provided with a second rolling surface 2 2 2 and a first rolling surface 2 1 1 The cap 2 2 is sleeved on the screw 1 , and the inner edge is provided with a rolling groove 2 2 1 opposite to the thread groove 1 1 . The nut 2 2 is provided with a receiving groove 223a, 223b at each end. One end of the nut 2 2 is connected with the driving member and is driven by the driving member; ★ The right outer rolling element X1 is placed on the first rolling surface 2 and the second Between the rolling surfaces 2 2 2; the right inner rolling element X 2 ' is placed between the threaded groove and the groove 2 2 1 ; " - the lubricating device 3 ' contains a kit 31 and a guide _ 2 ' The sleeve 31 is disposed on the end surface of the outer ring 2 i of the bearing, and the guiding member 32 is fixed on the end surface of the nut 22 and is cooperating with the nut w; the sleeve 31 is sleeved on the guide The bow member 32 is rotated, and the guiding member 32 is rotated relative to the sleeve 3 i; the cymbal kit 3 1 is a hollow structure, one end of which is a completely open end, and the fully open end outer edge is provided with a flange 3 1 4, the flange 3 14 is fixed on the concave portion 2丄2 of the outer ring 2 of the bearing; the other end of the sleeve 3 1 is provided with a perforation 3 1 2 , and the sleeve is on the outer edge of the perforation 3 1 2 An oil hole 3 1 3 is provided, and the oil hole 3 1 3 is not disposed in the oil nozzle 4, and the oil nozzle 4 is provided with an oil passage 4 1 ; the guide member 3 2 is a hollow structure. Each of the two ends is provided with an extending portion 3 22 and a protruding portion 325, and the extending portion 3 2 2 is matched with the through hole 3 1 2 of the "Xuan kit 3 1 (for rotating the two), the convex portion The outlet 3 2 5 is fixed to the nut 2 2 2 2 3 Β, the outer edge of the guiding member 3 2 is provided with a spiral portion 3 2 3 , a spiral groove 3 2 3 is formed between the spiral portion 3 2 3 , and the two ends of the spiral groove 3231 are respectively An oil hole 324 Α , Β is provided; the extension portion 32 2 is connected with the guide member 32 and is provided with a class portion 3 2 7 , and the guide member 3 2 is outside the class portion 3 2 7 Further, there is a through hole 3 2 6 which is in communication with the spiral groove; 3 2 3 1 'the class portion 3 2 7 is coupled with the sleeve 3 i to form a confluence space 8 , the class portion 3 The arrangement of 2 7 is to extend the mating surface of the kit 3 and the guide member 3 2 so as to prevent the filling grease 6 from leaking due to the large pressure, and to form the confluence space 8, the confluence space 8 is connected to the through hole. 3 2 6 and the oil hole 3 1 of the kit 3 1 is connected to the oil passage 4 1 of the nozzle 4, and the lubricating grease 6 is flowed into the confluence space 8 through the oil passage 4 of the grease nozzle 4, and then Through the confluence space 8 / melon into the through hole 3 2 6 of the guiding member 3 2 (because the guiding member 3 2 is rotated relative to the side sleeve 3 1 , the oil hole 3 1 3 of the kit 3丄 and the guiding The through hole 3 2 6 of the piece 3 2 cannot be aligned, so To set the space constant hunger sink 8 so that grease indirectly transmitted to the screw groove 6). A plurality of squeegees 5 are disposed on the squeezing portion 523A of the threaded end of the nut 2 and the receiving portion 311 of the sleeve 31. In addition, it should be emphasized that the inner edge surface 3 1 1 of the kit 31 is matched with the outer edge surface 3 2 1 of the guiding member 3 2 , and the extension portion of the guiding member 3 2 is provided. 3 2 2 is matched with the perforation 3 1 2 provided in the kit 3 1 , and the step portion 3 2 7 of the guiding member 3 2 is matched with the kit 3 1 , and the above matching is a clearance fit. The above description is a detailed description of each component and its mutual relationship. The following describes the embodiment of the present embodiment: First, the protruding portion 3 2 5 of the guiding member 32 and the valley of one end of the nut 2 2 are placed. The groove 2 2 3 B is fitted and fixed, and then the sleeve 3 1 is sleeved on the guiding member 32 so that the inner edge surface 31 1 of the sleeve 31 and the outer surface of the y/19 guiding member 3 2 3 2 1 mating, the extension 3 2 2 of the guiding member 3 2 is matched with the perforation 3 1 2 of the side sleeve 3 1 , and the guiding member 32 is of the same level.卩3 2 7 cooperates with the kit 3 1 to make the lubricating grease 6 not leak out' and the spiral groove 3 2 3 and the inner edge surface 3 of the kit 3 work in a shape, forming a closed guiding channel 7 Furthermore, when the nut 22 rotates, the guide soil 2 is moved in conjunction with the nut 2 2 and the kit 3 1 is not moved, so that it can be known by conventional law and fluid mechanics, such as The guiding channel 7 is filled with lubricating grease ♦ $H riding grease 6 will advance along the guiding channel 7, when the lubricating grease 6 is at the end of the guiding channel 7, a pressure will be generated, and by this pressure The lubricating grease 6 flows from the oil outlet 3 2 4 ▲ 3 2 4 B provided at both ends of the guiding passage 7 to the surface of the screw i, and the flow rate of the lubricating grease 6 is 3 3 4 · A from the oil outlet 3 The size of Q 〇/1 4 A 3 2 4 B is determined to achieve the purpose of lubrication. In view of the above, the present invention cooperates with the guide member and the kit to form a spiral guide channel formed by the + guide member and the sleeve by the rotary nut (four) force. Passing it to the screw surface 'to achieve the riding effect, so the utilization of the present invention should have been doubted, and in addition, the characteristic technology revealed in the embodiment of the present invention is in the application of The public stomach is found in many publications, and it has not been confirmed by the fact that the effect of the above-mentioned effects has been improved, and it has the effect of not being uzy/iy.

The gait has been in compliance with the patent regulations, and McGee has filed a special invention for the purpose of reviewing and granting patents as soon as possible. The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the present invention. Therefore, the replacement of the quaternary change (four) effect elements should still be exemplified by the present invention. 1329719 ' [Simple description of the diagram] 'The first picture is a perspective view of a nut-rotating ball screw with a lubricating device. * The second picture is a cross-sectional view of the first figure A - A. - The third picture shows the nut rotating ball screw explosion diagram of the lubrication device. The fourth A picture is a perspective view of the original kit. • Figure 4B is a perspective view of the guide. The fifth figure is a structural diagram of a conventional nut rotating ball screw lubrication device.

15 1329719 [Explanation of main component symbols] (Priority technology) ' 9 1 Screw / 9 2 Nut 921 Through hole 9 4 Bearing 941 Through hole (Invention) 1 Screw 2 Rotary nut 2 1 Bearing outer ring 2 12 Recess 2 2 Nuts • 222 Second rolling surface

223A, 223B 3 Lubrication device 311 Inner edge surface 3 13 Oil hole 3 2 Guide 322 Extension 910 Thread groove 920 Thread groove 9 3 Ball 9 4 0 Bearing outer ring A Thread groove 11 Thread groove 211 First rolling surface 2 2 1 Rolling groove accommodating groove 3 1 Kit 3 12 Perforation 3 14 Flange 321 Outer edge surface 323 Spiral part 1329719 3231 Spiral groove 324A, 324B Oil 孑L 325 Projection part 3 2 6 Through hole 327 Class part 328 Part 4 Nozzle 4 1 Oil channel 5 Wiper 5 1 Wiper part 6 Lubricating grease 8 Confluence space 7 Guide channel XI External rolling part X 2 Internal rolling part

Claims (1)

X. Patent application: L. A nut-rotating ball screw with a lubricating device, comprising: a screw having a thread groove; the rotary nut comprising a bearing outer ring and a nut, The shaft core is fixed on the machine, and the outer ring of the bearing is sleeved outside the nut. The outer ring of the screw is respectively provided with a second rolling surface and a rolling surface. Nested on the screw, which is provided with a (four) groove of a sunny (four) groove at the inner edge, and the end of the _cap is connected with the driving member and is driven by the driving member; Between the first __rolling surface and the second rolling surface; in the right inner; the swaying member is placed between the thread groove and the rolling groove; I bone holding, comprising a kit and a guiding member The kit is disposed on the end surface of the outer ring of the bearing, and the guiding member is fixed on the end surface of the nut and is cooperating with the nut; the kit is sleeved on the guiding member, and the The snail is rotated relative to the sleeve; the outer edge of the guiding member is provided with a screw U 4 (four) portion is formed - a spiral groove 'the spiral groove is provided with 1 oil hole at each end; the snail The groove and the kit form a guide channel. The nut rotary ball screw with a lubricating device according to the above-mentioned patent scope, wherein the outer edge of one end of the bearing outer ring is provided with a recess. *^D The nut-rotating ball screw with lubrication device described in the first paragraph of the patent scope, wherein the nut is grooved at both ends. The screw of the lubricating device described in claim 2 of the patent scope a cap rotary ball screw, wherein a flange is provided on one end of the sleeve, and a flange is fixed on a concave portion of the outer ring of the bearing. 5. A lubricating device as described in the above-mentioned patent scope The nut rotates 'ball screw; f dry, wherein the sleeve is provided with a perforation at one end, and the outer edge of the perforation is provided with an oil hole, wherein the oil hole is provided with a grease nozzle, and the oil nozzle is provided with a oil passage 6. The nut rotating ball screw with a lubricating device according to claim 3, wherein the guiding member is provided with a protruding portion at one end, and the protruding portion is fixed to the nut. Slotting 7. As described in the scope of application of the patent item a nut-rotating ball screw, wherein one end of the guiding member is provided with an extension portion, and the extension portion is connected with the guiding member to have a _-class portion, and the guiding member is provided on the outer side of the step portion. The through hole is connected to the spiral groove. The nut rotating screw of the lubricating device according to claim 7, wherein the step portion cooperates with the sleeve to form a confluent space. The confluence space is in communication with the through hole and the oil hole of the kit. 9. The nut rotary bearing ball screw with lubrication device according to item yi of the patent application scope is further provided with - (4) 10. The nut-rotating ball screw with a lubricating device according to claim 9, wherein the guiding member further comprises an outer edge surface, an extension portion and a step portion. UM, please refer to the nut-rotating ball screw with lubricating device according to the scope of the invention, wherein the inner edge surface of the kit is matched with the outer edge surface of the guiding member, and the guiding member is provided. The extension is with the kit. In addition, the perforation is matched, and the step portion of the guiding member is matched with the kit, and the above cooperation is a clearance fit. 12.- Nut-rotating ball screw with lubricating device, the nut-rotating ball screw is mainly composed of a screw, a bearing outer ring, a screwing member and a plurality of inner rolling members. Between the nut and the outer ring, the rolling element is between the cap and the thread, and the lubricating device comprises a set of <and-(four) pieces, the set is fixed at _ The guide member is fixed to the 丨 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , A spiral material channel. 13· For example, Shen Cai Lilang i 2 Rotary type tearing 1 screw nut screw of the π device, wherein the screw system is provided with a thread groove. 14::Formula::Τ2 The outer edge of the bearing ring of the nut of the sliding device is sleeved on the outer edge of the nut of the outer ring of the bearing; the nut and the surface of the nut are provided with a second rolling surface and a first The rolling two-threaded nut is sleeved on the rolling raft of the 蝉 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The drive member is connected and 15. The nut of the lubricating device of claim 14 is the same as the screw cap of the lubrication device. The t:r rod of the outer end of one end of the outer ring of the bearing is provided with a nut cap of the lubricating device at each end There is provided a nut with a lubricating device according to the fifteenth item of the patent application: Turn: ball screw, wherein one end of one end of the sleeve is provided with a convex flange and is disposed in a concave portion of the outer ring of the bearing. (4) Nuts with lubrication device as described in Item 16: Turn: Ball screw, wherein one end of the guide member is provided with the projection portion fixed to the receiving groove of the nut. According to the 12th item of the patent scope, there is a nut-turned ball screw snail # of the Runke set, wherein the kit is provided with a perforation, and the outer edge is provided with an oil hole, and the oil hole is provided for The oil nozzle is provided with a oil delivery passage. The screw is provided with a lubricated skirt 22 screw as described in claim 12 of the patent application, wherein the outer edge of the guide member is provided - Spiral system (4) __ spiral groove 'the two ends of the spiral groove ii 〇m; the spiral groove and the kit form the guide. Patent application The nut-rotating ball screw of the lubricating device according to the item 20, wherein the guiding member-end is provided with an extension #' 4 extension portion and the guiding member is connected with a class portion, The guide bow member is provided with a through hole on the outer side of the step portion, and the spiral groove is communicated with each other. 22. 22. The nut-rotating ball screw with lubricating device according to the scope of claim 2, wherein The class portion cooperates with the kit to form a confluence space that communicates with the through hole and the oil hole of the kit. 23. The screw with the lubrication device according to claim 12 Cap rotary ball screw, wherein the kit is further provided with an inner edge surface and a wearer 24; a nut 23/丄 rotary ball screw with lubrication device as described in claim 2, wherein the guide member It is also equipped with an outer rim surface, an extension portion, and a class portion. 25. The nut rotary ball screw with a lubricating device according to claim 24, wherein an inner edge surface of the kit is matched with an outer peripheral surface of the guiding member, and the guiding member is The extension portion is matched with the through hole of the kit, and the step portion of the guide member is matched with the sleeve, and the above cooperation is a clearance fit. twenty four