EP-4086024-B1 - ANGLE ATTACHMENT HEAD HAVING TRANSMISSION FUNCTION

Inventors

• CHEN, HU
• Song, Mingshan
• DENG, XIN
• DU, CHANGLIN
• GUO, Cuijuan
• LI, Yapeng
• ZHANG, HAIBO
• WEI, ZHIHONG
• SUN, HONGWEI
• ZHANG, Guoshuai

Dates

Publication Date

20260506

Application Date

20201127

Claims (5)

1. A belt-transmission angle attachment head, comprising: a housing (1); a power mechanism; a transmission mechanism; and a spindle (30), with the power mechanism and transmission mechanism arranged in the housing (1), wherein: the power mechanism includes a servo motor (20) and a reducer (21), the servo motor (20) is connected to the reducer (21), and an input shaft of the reducer (21) is vertically arranged with respect to an output shaft of the reducer (21); the transmission mechanism includes a driving wheel (22), a transmission belt (23) and a driven wheel (24), and the driving wheel (22) is mounted on the output shaft of the reducer (21); and a side of the spindle (30) is mounted on the housing (1) via a rotating shaft (31), an end of the rotating shaft (31) away from the spindle is mounted with the driven wheel (24), the driving wheel (22) and the driven wheel (24) are connected via the transmission belt (23), and the spindle (30) and the power mechanism are located on the same side of the transmission mechanism; and an end of the housing (1) is a spindle mounting end (13); the spindle mounting end (13) is provided with a spindle mounting portion (11); the spindle (30) is mounted on the spindle mounting portion (11) via the rotating shaft (31); and the spindle (30) and the driven wheel (24) are arranged on two sides of the spindle mounting portion (11), characterized in that a side of the spindle mounting portion (11) provided with the driven wheel (24) is also mounted with a clamping device for clamping the spindle; and the clamping device is arranged between the spindle mounting portion (11) and the driven wheel (24).
2. The belt-transmission angle attachment head according to claim 1, wherein: the clamping device is a pneumatic shaft clamping device.
3. The belt-transmission angle attachment head according to any one of claims 1 to 2, wherein: an end of the rotating shaft (31) connected to the spindle (30) is provided with a fixed plate (310); the rotating shaft (31) is fixedly connected to the spindle (30) via the fixed plate (310); and a side of the fixed plate (310) facing the driven wheel (24) is mounted with an angle measuring system (5) for measuring a swinging angle of the spindle.
4. The belt-transmission angle attachment head according to claim 3, wherein: the angle measuring system (5) includes a circular grating (50) and a reading head (51); the circular grating (50) is mounted on the fixed plate (310); and the reading head (51) is mounted on the spindle mounting portion (11).
5. The belt-transmission angle attachment head according to claim 4, wherein: a side of the spindle mounting portion (11) facing the spindle (30) is also provided with an angle measuring system accommodating cavity (14); the reading head (51) is mounted on an inner wall of the angle measuring system accommodating cavity (14); and the circular grating is mounted on the fixed plate (310), and in the direction of the axis of the rotating shaft, part of the circular grating is arranged in the angle measuring system accommodating cavity (14).

Description

TECHNICAL FIELD The present invention relates to the technical field of machine tool spindles, particularly, to a belt-transmission angle attachment head. BACKGROUND ART In fields such as aviation and national defense, deep cavity machining is often required. However, the existing machine tool spindle is generally mounted on a machine tool at a fixed angle, or the angle needs to be adjusted manually, resulting in a bulky volume, and thus, the existing machine tool spindle is not suitable for machining deep cavity structures with narrow space. CN 207 189 865 U discloses a belt-transmission angle attachment head according to the preamble of claim 1. SUMMARY OF INVENTION The present invention proposes a belt-transmission angle attachment head, which solves the problem that the existing machine tool attachment head is bulky in volume, complex in structure and unsuitable for deep cavity machining. The technical means adopted in the present invention are defined in claim 1 and are as follows: a belt-transmission angle attachment head, including: a housing, a power mechanism, a transmission mechanism, and a spindle, with the power mechanism and transmission mechanism arranged in the housing; the power mechanism includes a servo motor and a reducer, the servo motor is connected to the reducer, and an input shaft of the reducer is vertically arranged with respect to an output shaft of the reducer;the transmission mechanism includes a driving wheel, a transmission belt and a driven wheel, and the driving wheel is mounted on the output shaft of the reducer; anda side of the spindle is mounted on the housing via a rotating shaft, an end of the rotating shaft away from the spindle is mounted with the driven wheel, the driving wheel and the driven wheel are connected via the transmission belt, and the spindle and the power mechanism are located on the same side of the transmission mechanism. Further, an end of the housing is a spindle mounting end; the spindle mounting end is provided with a spindle mounting portion; the spindle is mounted on the spindle mounting portion via the rotating shaft; and the spindle and the driven wheel are arranged on two sides of the spindle mounting portion. Further, a side of the spindle mounting portion provided with the driven wheel is also mounted with a clamping device for clamping the spindle; and the clamping device is arranged between the spindle mounting portion and the driven wheel. Further, the clamping device is a pneumatic shaft clamping device. Further, an end of the rotating shaft connected to the spindle is provided with a fixed plate; the rotating shaft is fixedly connected to the spindle via the fixed plate; and a side of the fixed plate facing the driven wheel is mounted with an angle measuring system for measuring a swinging angle of the spindle. Further, the angle measuring system includes a circular grating and a reading head; the circular grating is mounted on the fixed plate; and the reading head is mounted on the spindle mounting portion. Further, a side of the spindle mounting portion facing the spindle is also provided with an angle measuring system accommodating cavity; the reading head is mounted on an inner wall of the angle measuring system accommodating cavity; and the circular grating is mounted on the fixed plate, and in the direction of the axis of the rotating shaft, part of the circular grating is arranged in the angle measuring system accommodating cavity. Compared with the prior art, the belt-transmission angle attachment head of the present invention has the following advantages. The servo motor is arranged longitudinally (in a vertical state) and drives the spindle via the reducer and the belt-transmission structure in a manner that the spindle is in the space of the extension line of the servo motor output shaft, and thus, the space occupied by the servo motor and the spindle is reduced, and the volume of the angle attachment head is reduced, so that the spindle can enter a narrow space. Meanwhile, because the belt-transmission structure can drive the spindle to swing, a deep cavity can be easily machined, and moreover, the structure has advantages such as simple structure, convenient assembly and maintenance, and low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a structural diagram of a belt-transmission angle attachment head provided by the present invention.FIG. 2 is a main view of the belt-transmission angle attachment head provided by the present invention.FIG. 3 is a schematic diagram of a range of a swinging angle that can be achieved by the belt-transmission angle attachment head provided by the present invention. In the figure: 1. housing, 11. spindle mounting portion, 12. spindle accommodating space, 13. spindle mounting end, 14. angle measuring system accommodating cavity, 20. servo motor, 21. reducer, 22. driving wheel, 23. transmission belt, 24. driven wheel, 30. spindle, 31. rotating shaft, 310. fixed plate, 32. bearing,