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CN-224214647-U - Ball screw with combined circulation component

CN224214647UCN 224214647 UCN224214647 UCN 224214647UCN-224214647-U

Abstract

The application relates to the field of linear actuating devices, in particular to a ball screw with a combined type circulating component, which comprises a screw, wherein threads are arranged on the screw, a nut is sleeved on the screw, a spiral rollaway nest is arranged between the nut and the screw, balls are arranged in the spiral rollaway nest, the combined type circulating component is arranged at the end part of the nut and comprises a first circulating part and a second circulating part, a return groove is arranged on the combined type circulating component, the return groove is matched with a groove on the nut and the thread groove on the screw to form a complete return channel, and the balls roll back and forth between the screw and the nut through the return channel and the spiral rollaway nest. According to the application, the two-section linear dividing mode is adopted between the first circulating part and the second circulating part, so that the lips of the circulating parts are separated, the overall bearing capacity is higher, the service life of the circulator is prolonged, and the rigidity and strength of the lips are enhanced.

Inventors

  • Qiu yongning
  • LIU MAN
  • Dai chuang

Assignees

  • 江苏恒立精密工业有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (10)

  1. 1. A ball screw having a combined circulation member, comprising, The screw rod (1), the screw rod (1) is provided with threads; The nut (2) is sleeved on the screw rod (1), a spiral rollaway nest is arranged between the nut (2) and the screw rod (1), and balls are arranged in the spiral rollaway nest; The combined type circulating component (4), the combined type circulating component (4) is arranged at the end part of the nut (2), the combined type circulating component (4) comprises a first circulating part (41) and a second circulating part (42), a return groove is formed in the combined type circulating component (4), the return groove is matched with a groove in the nut (2) and a thread groove in the screw (1) to form a complete return channel, and the balls roll between the screw (1) and the nut (2) in a circulating and reciprocating mode through the return channel and the spiral rollaway path.
  2. 2. The ball screw with the combined circulating component according to claim 1, characterized in that the first circulating part (41) comprises a main body (413), a mounting part (411) and an inserting part (412), a transition groove (415) is arranged on the inserting part (412), a first guide groove (414) is arranged on the main body (413) of the first circulating part (41), the first guide groove (414) is mutually connected with the transition groove (415), and the first guide groove (414), the transition groove (415) and a thread groove on the screw (1) are matched to form a first return channel for rolling balls.
  3. 3. The ball screw with the combined cycle part according to claim 2, wherein the first cycle part (41) further comprises a mounting part (411), wherein a mounting hole (416) is arranged on the mounting part (411), and the mounting hole (416) is used for a bolt to penetrate and fix the combined cycle part (4).
  4. 4. The ball screw with the combined circulation part according to claim 1, wherein the second circulation part (42) comprises a lip part (421), a second guide groove (422) is arranged on the lip part (421), the second guide groove (422) is matched with a groove on the nut (2) to form a second return channel for rolling balls, the second guide groove (422) is connected with one end of the first guide groove (414) far away from the transition groove (415) and smoothly transits, and the second guide groove (422), the first guide groove (414) and the transition groove (415) form return grooves.
  5. 5. The ball screw with combined cycle components according to claim 4, characterized in that the side wall of the lip (421) opposite the second guide groove (422) is arranged in an arc shape to fit the thread groove on the screw (1).
  6. 6. The ball screw with the combined cycle part according to claim 5, wherein an end of the lip (421) near the second guide groove (422) far from the first guide groove (414) is an introduction end (425), and an end of the introduction end (425) is provided in a circular arc shape.
  7. 7. The ball screw with the combined circulation component according to claim 1, wherein a first mounting surface (417) is arranged on the first circulation portion (41), a second mounting surface (423) is arranged on the second circulation portion (42), the first mounting surface (417) and the second mounting surface (423) each comprise one or more planes, the first mounting surface (417) is closely attached to the second mounting surface (423), and the first circulation portion (41) and the second circulation portion (42) are combined to form the combined circulation component (4).
  8. 8. The ball screw with the combined cycle part according to claim 7, wherein the first mounting surface (417) is provided with a plug-in block (418), the second mounting surface (423) is provided with a slot (424) adapted to the plug-in block (418), and the plug-in block (418) is in plug-in fit with the slot (424).
  9. 9. The ball screw with the combined circulating element according to claim 1, characterized in that the nut (2) is provided with a mounting groove (21), and the combined circulating element (4) is embedded at the end of the nut (2) through the mounting groove (21).
  10. 10. The ball screw with the combined circulation part according to claim 9, further comprising a cover plate (3), wherein the cover plate (3) covers the end of the nut (2) and presses the combined circulation part (4) into a mounting groove (21) at the end of the nut (2).

Description

Ball screw with combined circulation component Technical Field The application relates to the field of linear actuating devices, in particular to a ball screw with a combined circulating component. Background With the continuous improvement of industrialization level, the requirements of automation equipment for high-speed and long-life ball screws are continuously improved. Existing circulators are usually cast integrally, and the circulators are arranged between the nut and the screw to achieve the return guiding function of the balls. In order to install the circulating component, a threaded groove is arranged on the screw rod, one end of the threaded groove extends to the end of the screw rod, so that the diameter of a bearing leaning surface of the screw rod is incomplete, and the screw rod shaft generates deflection deformation in an operation state, so that the smoothness of the circulating component, the noise of steel ball flowing and the service life of the ball screw are directly affected. Disclosure of utility model The technical problem to be solved by the utility model is that the end face integrity of the screw rod bearing is damaged by the installation of the circulator. To this end, the present utility model provides a ball screw having a combined circulation member. The technical scheme adopted for solving the technical problems is as follows: a ball screw having a combined circulation member includes, The screw rod is provided with threads; The nut is sleeved on the screw rod, a spiral rollaway nest is arranged between the nut and the screw rod, and balls are arranged in the spiral rollaway nest; The combined type circulating component is arranged at the end part of the nut and comprises a first circulating part and a second circulating part, a return groove is formed in the combined type circulating component, the return groove is matched with a groove in the nut and a thread groove in a screw rod to form a complete return channel, and the balls roll between the screw rod and the nut in a circulating and reciprocating mode through the return channel and the spiral rollaway nest. Further, the first circulation portion comprises a main body, a mounting portion and an insertion portion, a transition groove is formed in the insertion portion, a first guide groove is formed in the main body of the first circulation portion, the first guide groove is mutually connected with the transition groove, and the first guide groove, the transition groove and a thread groove on the screw rod are matched to form a first return channel for rolling balls. Further, the first circulating part further comprises a mounting part, and a mounting hole is formed in the mounting part and is used for allowing a bolt to penetrate through and fix the combined circulating part. Further, the second circulating part comprises a lip part, a second guide groove is arranged on the lip part, the second guide groove is matched with a groove on the nut to form a second return groove for rolling balls, the second guide groove is connected with one end, far away from the transition groove, of the first guide groove and is in smooth transition, and the second guide groove, the first guide groove and the transition groove form the return groove. Further, the side wall of the lip opposite to the second guide groove is provided with an arc shape which is matched with a thread groove on the screw rod. Further, one end, close to the second guide groove, far away from the first guide groove on the lip is a leading-in end, and the end part of the leading-in end is arranged in a circular arc shape. Further, a first mounting surface is arranged on the first circulating part, a second mounting surface is arranged on the second circulating part, the first mounting surface and the second mounting surface both comprise one or more planes, the first mounting surface and the second mounting surface are tightly attached, and the first circulating part and the second circulating part are combined to form a combined circulating part. Further, an inserting block is arranged on the first installation surface, a slot matched with the inserting block is arranged on the second installation surface, and the inserting block is in inserting fit with the slot. Further, the nut is provided with a mounting groove, and the combined circulating component is embedded at the end part of the nut through the mounting groove. Further, the device also comprises a cover plate, wherein the cover plate covers the end part of the nut, and the combined circulating component is pressed in the mounting groove at the end part of the nut. The utility model has the advantages that the lip parts of the circulating parts are separated by adopting a two-section linear dividing mode between the first circulating part and the second circulating part, the whole bearing capacity is higher, the service life of the circulator is prolonged, and the rigidity and the strength of the lip