Machine tool ball screw and machine tool
A ball screw and machine tool technology, applied in mechanical equipment, metal processing mechanical parts, transmission devices, etc., can solve the problems of high production cost, high maintenance, difficult to ensure accuracy, and difficult to ensure accuracy, and achieves guaranteed accuracy, convenient adjustment, The effect of improving maintenance efficiency and cost
Active Publication Date: 2020-12-22
杭州富阳孙氏机床有限公司
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Problems solved by technology
After the ball screw pair with pre-tightening force is adjusted, the change of the pre-tightening force will be caused by the change of the load and the wear caused by friction. The change of the pre-tightening force caused by the wear and tear caused by the long-term use of the product also needs to replace the pad The user can only remove the ball screw pair, the gasket configuration is more troublesome, and it is not easy to ensure the accuracy, so it can only be sent back to the manufacturer for replacement gaskets to readjust the pre-tightening force, and sent back to the manufacturer for replacement gaskets. The pre-tightening force is readjusted, so there are problems of production cost, high maintenance, difficult to guarantee accuracy and short service life, which affects the normal production
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[0035] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such...
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The invention discloses a machine tool ball screw and a machine tool, and belongs to the field of machine tools. The machine tool ball screw comprises a screw rod body, a nut seat, a flange nut, a pre-tightening nut and a pressing part, wherein a mounting hole is formed in the nut seat, a first threaded hole is formed in a first end surface of the nut seat, and a connecting hole is formed in a second end surface of the nut seat; the flange nut is rotationally arranged on the screw rod body, and the flange nut penetrates through the mounting hole, a second threaded hole is formed in a flange end of the flange nut, a fastening screw is screwed into the second threaded hole and the first threaded hole in sequence, and a positioning key groove used for allowing a pre-tightening piece to be mounted is arranged on the middle outer wall of the flange nut; the pre-tightening nut is in threaded connection with the free end of the flange nut; and the pressing part is connected with the connecting hole and abuts against the pre-tightening nut. According to the scheme, after the ball screw is installed, the pre-tightening force of the pre-tightening nut is adjusted according to the use requirement, the pre-tightening nut is tightened by the pressure on the pre-tightening nut from the pressing part, the structure is simple, and the adjustment is convenient.
Description
technical field [0001] The invention relates to the technical field of machine tool ball screws, in particular to a machine tool ball screw and a machine tool. Background technique [0002] At present, the ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repeated force, and at the same time, it has high precision and reversibility. and high efficiency features. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. For high-precision machine tools, the ball screw is a very critical component, which can effectively improve the positioning accuracy of the machine tool. [0003] The pre-tightening of the existing domestic ball screw pair adopts the gasket pre-tightening method. The nut gasket pre-tightening needs to be specially configured with the pre-tighteni...
Claims
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IPC IPC(8): F16H25/22F16H25/24F16H57/04B23Q5/00B23Q11/12
CPCB23Q5/00B23Q11/122B23Q11/125F16H25/2209F16H25/24F16H57/0404F16H57/0421F16H57/0441F16H57/0449F16H57/0497
Inventor 孙钰昭
Owner 杭州富阳孙氏机床有限公司