CN220278277U - Swing headstock structure - Google Patents

Abstract

The utility model discloses a swinging main shaft box structure, which comprises a sliding plate and a main shaft box body, wherein a motor seat is rotatably arranged on the sliding plate, a motor is arranged on the motor seat, the output end of the motor is connected with a screw rod, shoulder plates are symmetrically arranged on the side wall of the sliding plate, and the main shaft box body is rotatably connected with the shoulder plates.

Description

Swing headstock structure

Technical Field

The utility model relates to the technical field of machining center rotating shaft driving, in particular to a swinging main shaft box structure.

Background

Along with the rapid development of the processing and manufacturing industry in China, the requirements of high-speed high-precision processing centers are increasingly obvious; the five-axis linkage machine tool is main processing equipment for processing complex curved surface parts, and particularly has good performance in the curved surface processing of products such as aerospace, automobiles, precision machining, dies and the like. The high-precision five-axis processing machine tool is composed of three linear axes and two rotating shafts, wherein the rotating shafts mainly have three layout modes: (1) an AC axis turntable; (2) AC axis pendulum; (3) A-axis swinging head and C-axis swinging table. The swing headstock structure disclosed herein is applicable to five-axis machine tools of the 3 rd layout.

The existing five-axis machine tool has the technical scheme that the rotating shaft structurally can be divided into a single pendulum structure and a double pendulum structure, and can be divided into an electric spindle drive and a mechanical transmission drive in a driving mode, wherein the electric spindle drive mainly refers to torque motor direct drive, and the mechanical transmission drive mainly comprises worm gear drive, servo motor and belt drive, gear drive, cam worm drive and the like. The torque motor drive has the advantages of high rotating speed, high acceleration, high positioning precision, high response speed and the like. However, the cooling system needs to be configured, the application and maintenance costs are high, and the occupied space is large. The traditional mechanical transmission type driving has the advantages of high transmission rigidity, low investment cost and the like, but occupies large space, is rapid in abrasion and needs timing adjustment. Therefore, the design has high precision, high reliability and dynamic characteristics, the rotary shaft swinging mechanism with low cost and small occupied space has quite wide application requirements on five-shaft machining center machines at home and abroad, and the scheme is generated in view of the fact that the rotary shaft swinging mechanism is intensively studied aiming at the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a swinging main shaft box structure, which solves the problems in the background technology.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a swing headstock structure, includes slide and headstock body, it is provided with the motor cabinet to rotate on the slide, install the motor on the motor cabinet, the output of motor is connected with the lead screw, the symmetry is provided with the shoulder board on the slide lateral wall, the headstock body rotates with the shoulder board and is connected, the afterbody of headstock body rotates and installs the nut seat, the nut seat internal fixation inlays and is equipped with the nut, nut and lead screw-thread fit, through the rectilinear motion of lead screw drive nut, realize the swing motion of A axle headstock body.

The two sides of the main shaft box body are respectively provided with a main shaft box fixing shaft, and the main shaft box fixing shafts are connected with the shoulder plates through main shaft box bearings.

The motor cabinet fixing shafts are respectively arranged on two sides of the motor cabinet and are connected with the sliding plate through motor cabinet bearings.

The two sides of the nut seat are symmetrically provided with nut seat fixing shafts, and the nut seat fixing shafts are connected with the tail part of the main shaft box body through nut seat bearings.

The main shaft box body is internally provided with a machine tool main shaft of a machining center.

Advantageous effects

The utility model provides a swinging main shaft box structure. The beneficial effects are as follows: the swing main shaft box mechanism is high in efficiency, high in stability, high in precision and small in space, so that the swing motion of the A shaft in the machining process is realized;

the utility model designs a special rocker slide block actuating mechanism, which adopts a derivative form of a connecting rod mechanism, realizes the swinging motion of an A-axis spindle box by driving the linear motion of a screw through a screw, has high response speed (the swinging time of the A-axis can be completed within 0.5 s), increases the rotating torque of the A-axis due to the lever principle, reduces the manufacturing difficulty, saves the cost, the space and the manufacturing and assembling time, simultaneously ensures that the swinging motion process of the A-axis of a machine tool is stable and reliable in the processing process, has high exchange efficiency of cutters, and can reach the cutter changing speed of 2 s.

Drawings

Fig. 1 is a schematic perspective view of a swing headstock structure according to the present utility model.

Fig. 2 is a schematic cross-sectional view of a swing headstock structure according to the present utility model.

In the figure: 1. a slide plate; 2. a servo motor; 3. a motor base; 4. a motor base bearing; 5. a motor base fixing shaft; 6. a screw rod; 7. a nut; 8. a nut seat; 9. a nut seat fixing shaft; 10. a nut seat bearing; 11. a spindle box; 12. a headstock bearing; 13. a spindle box fixed shaft; 14. a shoulder plate; 15. a main shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

All electric components in the scheme are connected with an adaptive power supply through wires by a person skilled in the art, and an appropriate controller is selected according to actual conditions so as to meet control requirements, specific connection and control sequences, and the electric connection is completed by referring to the following working principles in the working sequence among the electric components, wherein the detailed connection means are known in the art, and the following main description of the working principles and processes is omitted from the description of electric control.

Referring to fig. 1-2, the present utility model provides a swing headstock structure:

examples: as can be seen from fig. 1-2 of the specification, the solution includes a slide plate 1 and a spindle box 11, a motor base 3 is rotatably provided on the slide plate 1, a motor 2 is mounted on the motor base 3, an output end of the motor is connected with a lead screw 6, shoulder plates 14 are symmetrically provided on side walls of the slide plate 1, the spindle box 11 is rotatably connected with the shoulder plates 14, a nut base 8 is rotatably mounted at a tail portion of the spindle box 11, a nut 7 is fixedly embedded in the nut base 8, the nut 7 is in threaded fit with the lead screw 6, the linear motion of the nut 7 is driven by the lead screw 6 to realize the swinging motion of the spindle box 11 of the a shaft, wherein spindle box 11 is respectively provided with a spindle box fixing shaft 13, the spindle box fixing shafts 13 are connected with the shoulder plates 14 by a spindle box bearing 12, motor base fixing shafts 5 are respectively provided on two sides of the motor base 3, the motor base fixing shafts 5 are connected with the slide plate 1 by the motor base bearing 4, the nut base fixing shafts 9 are symmetrically provided on two sides of the nut base 8, and the tail portion of the spindle box 11 is connected with the spindle box 11 by the nut base bearing 10, and a spindle box 11 is provided with a machine tool center 15.

The working principle is as follows, when the utility model is used, the servo motor 2 drives the screw rod 6 to rotate, at the moment, the screw 7 and the screw seat 8 move up and down along the screw rod, meanwhile, the screw seat 8 swings along the screw seat fixing shaft 9, because the screw seat fixing shaft 9 is connected with the main shaft box body 11 through the screw seat bearing 10, the main shaft box body 11 and the main shaft 15 arranged on the main shaft box body can be driven to rotate along the main shaft box fixing shaft 13, thereby realizing the swinging motion of the main shaft 15 in the processing process, adopting the derivative form of the connecting rod mechanism, driving the screw 7 to linearly move through the screw rod 6, realizing the swinging motion of the main shaft box 11 of the A shaft, and having high response speed (the swinging time of the A shaft can be completed within 0.5 s), and the rotating torque of the A shaft is increased due to the lever principle, the manufacturing difficulty is reduced, the cost, the space and the manufacturing time can be saved, the swinging motion process of the A shaft in the processing process is stable and reliable, and the exchange efficiency of the cutter can reach the tool changing speed of 2 s.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a swing headstock structure, includes slide (1), its characterized in that, be provided with motor cabinet (3) and servo motor (2) on slide (1), motor cabinet (3) are connected with slide (1) through motor cabinet bearing (4) and motor cabinet fixed axle (5), when servo motor (2) drive lead screw (6) are rotatory, can make whole actuating mechanism follow fixed pivot swing.

2. A swing headstock structure according to claim 1, wherein: the screw rod (6) comprises a screw nut (7), the screw nut (7) is combined with a screw nut seat (8), and the screw nut seat (8) can swing along the fixed shaft when the screw rod (6) rotates through the screw nut seat fixed shaft and the inner ring of the screw nut seat bearing (10).

3. A swing headstock structure according to claim 2, wherein: the screw seat bearing (10) is fixedly connected with the main shaft box body (11), the front end of the main shaft box body (11) is connected with the main shaft box fixing shaft (13) through the main shaft box bearing (12), the outer ring of the main shaft box bearing (12) is fixedly connected with the shoulder plate (14), the shoulder plate (14) is fixedly connected with the sliding plate (1), the main shaft (15) is arranged on the main shaft box body (11), and the main shaft (15) and the main shaft box body (11) swing by taking the main shaft box fixing shaft (13) as the center when the screw rod (6) rotates.