An integrated hydrostatic nut main drive type lead screw auxiliary linear feed unit
A technology of linear feed and screw pair, which is applied in the field of precision and ultra-precision machining, can solve problems such as limited machining accuracy, achieve the effects of reducing rotational inertia force, simple oil passage structure, and reducing friction
Active Publication Date: 2021-05-11
SHANDONG UNIV
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Problems solved by technology
[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an integrated hydrostatic nut main drive type lead screw auxiliary linear feed unit, which solves the problems caused by the lead screw driving the hydrostatic wire in the current precision and ultra-precision machining process. Vibration, heat generation, deformation, etc. that exist in the lever pair may easily lead to limited processing accuracy, and can realize ultra-high-precision linear motion with large stroke, high rigidity, and high-frequency response in the process of precision and ultra-precision machining
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Embodiment 1
[0035] This embodiment provides an integrated hydrostatic nut main drive type lead screw auxiliary linear feed unit, such as figure 1 As shown, it includes a hollow motor, a nut assembly, a static pressure screw 7, a hydrostatic guide rail, a workbench 10, a static pressure screw fixing seat and a base 1, and there are two static pressure screw fixing seats, which are respectively fixing seats A6 , The fixed seat B16; the fixed seat A6 is installed on one end of the base 1, and the fixed seat B16 is installed on the other end of the base 1. The nut assembly is threaded with the static pressure lead screw 7, and the hollow motor is installed on one side of the nut assembly. One end of the static pressure lead screw 7 is connected to the fixed seat A6, and the other end is connected to the fixed seat B16. The nut assembly is connected to the workbench 10 through the support frame 11, and the workbench 10 is connected to the hydrostatic guide rail.
[0036] Specifically, such a...
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The invention discloses an integrated hydrostatic nut main drive type lead screw auxiliary linear feed unit, the technical proposal of which is: comprising a static pressure lead screw parallel to each other, a hydrostatic guide rail, and a nut assembly axially installed on the static pressure lead screw A hollow motor is installed on one side of the nut assembly; the nut assembly is installed under the workbench through a support frame, and the workbench is detachably connected to the hydrostatic guide rail; the outside of the support frame is covered with an oil collecting plate to form an oil collecting space; The static pressure lead screw is installed above the base, and the base is provided with a plurality of oil discharge grooves for draining oil for the hydrostatic guide rail and the oil collecting plate. The invention solves the problem that the machining accuracy is limited due to the vibration, heat generation, deformation, etc. existing in the current precision and ultra-precision machining process due to the screw driving the hydrostatic screw pair, and can realize large-scale machining in the precision and ultra-precision machining process. Ultra-high-precision linear motion with stroke, high stiffness, and high response.
Description
technical field [0001] The invention relates to the technical field of precision and ultra-precision machining, in particular to an integrated hydrostatic nut main-driven screw auxiliary linear feed unit. Background technique [0002] As a support for the development of national defense and high-tech, ultra-precision machining technology plays an increasingly important role in modern manufacturing. As the upgrading of industrial products continues to accelerate, the performance requirements for precision and ultra-precision machine tools are also gradually increasing. As an important component of ultra-precision machining equipment, the ultra-precision linear motion platform currently mainly uses linear motors, ball screw pairs and hydrostatic screw pairs. [0003] Although linear motors have high rigidity and fast response, they have problems in anti-interference and damping. The ball screw pair uses steel balls as the running load, which has a large weight, easy deformat...
Claims
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IPC IPC(8): B23Q5/26B23Q5/40
CPCB23Q5/26B23Q5/40
Inventor 冯显英刘延栋苏哲卢佳佳孙宜田韩兴昌李沛刚李慧
Owner SHANDONG UNIV