CN219827310U

CN219827310U - Pneumatic rotary head

Info

Publication number: CN219827310U
Application number: CN202321128879.9U
Authority: CN
Inventors: 卢振四; 周永叶
Original assignee: Dongguan Hongye Precision Technology Co ltd
Current assignee: Dongguan Hongye Precision Technology Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-13
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses a pneumatic rotary head, which relates to the technical field of rotary heads and comprises a main half shell assembly and a sub half shell assembly which are fixedly connected together, wherein a sliding assembly is movably arranged in the main half shell assembly, a main shaft assembly is movably connected in the sliding assembly, two ends of the main shaft assembly extend to the outer parts of the main half shell assembly and the sub half shell assembly, and the rotary head adopts an air source as a driving shaft rod to rotate.

Description

Pneumatic rotary head

Technical Field

The utility model relates to the technical field of rotary heads, in particular to a pneumatic rotary head.

Background

The rotary head is the only power source for the rotation of the table surface of the rotary table, the current rotary head is divided into two modes, one mode is motor direct drive, the mode requires high precision of the motor, usually a servo motor or a stepping motor, the price is high, the maintenance cost is high, the other mode adopts oil pressure generated by hydraulic oil to promote the shaft lever of the rotary head to rotate, the short-term use has no defect, but under the condition of long-term use, the oil is easy to leak, and the cleaning is not easy.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a pneumatic rotary head, which solves the problems of high price and easy oil seepage of the existing rotary head in a motor direct drive or oil pressure drive mode.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the pneumatic rotary head comprises a main half shell assembly and a sub half shell assembly which are fixedly connected together, wherein a sliding assembly is movably arranged in the main half shell assembly, a main shaft assembly is movably connected in the sliding assembly, and two ends of the main shaft assembly extend to the outer parts of the main half shell assembly and the sub half shell assembly;

the sliding assembly comprises a movable sleeve movably arranged in the female half-shell assembly, a plurality of mounting holes are formed in the circumferential side of the movable sleeve, a limiting piece is fixed in each mounting hole, and steel balls are arranged at the end part of each limiting piece in a rolling mode;

the main shaft assembly comprises a shaft rod movably arranged in the movable sleeve, a shaft sleeve is fixedly sleeved outside the shaft rod, a plurality of driven grooves with arc tracks are formed in the circumferential side of the shaft sleeve, and the steel balls roll in the driven grooves.

Further, the female half-shell assembly comprises a first shell, a threaded hole is formed in the top end of the first shell, and a limit bolt is connected to the threaded hole.

Further, the circumferential side of the movable sleeve is also provided with a limiting groove with a waist-shaped structure, and the bottom end of the limiting bolt extends to the inside of the limiting groove.

Further, a first air cavity is formed in the first shell, a first air hole is formed in the bottom end of the first shell, and the first air cavity is communicated with the first air hole.

Further, the sub-half shell assembly comprises a second shell, a second air cavity is formed in the second shell, a second air hole is formed in the bottom end of the second shell, and the second air hole and the second air cavity are communicated.

Further, a spline groove is formed in the outer surface of one end of the shaft rod.

The utility model provides a pneumatic rotary head. Compared with the prior art, the method has the following beneficial effects:

the rotary head adopts the air source as a mode of driving the shaft rod to rotate, compared with the existing motor direct driving and hydraulic driving modes, the rotary head is low in cost, and after long-term use, even if air leakage occurs, the rotary head can replace a sealing ring, and cleaning is not needed like oil leakage, and the air source is used as a power source, so that the rotary head is clean and environment-friendly.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of the present utility model;

FIG. 2 is a schematic diagram of an assembled structure of the present utility model;

FIG. 3 is a half cross-sectional view of the present utility model;

fig. 4 is a front view of fig. 3.

In the figure: 1. a female half-shell assembly; 11. a first housing; 12. a threaded hole; 13. a limit bolt; 14. a first air hole; 15. a first air chamber; 2. a sub-half shell assembly; 21. a second housing; 22. a second air hole; 23. a second air chamber; 3. a sliding assembly; 31. a movable sleeve; 32. a mounting hole; 33. a limiting piece; 34. steel balls; 35. a limit groove; 4. a spindle assembly; 41. a shaft lever; 42. a shaft sleeve; 43. a driven groove; 44. spline grooves.

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.

Referring to fig. 2, the present utility model provides a technical solution: the utility model provides a pneumatic rotary head, including female half shell assembly 1 and sub-half shell assembly 2 that fixed connection is in the same place (female half shell assembly 1 and sub-half shell assembly 2 are connected through the bolt), the inside activity of female half shell assembly 1 is provided with slip subassembly 3 (slip subassembly 3 is under the promotion effect of atmospheric pressure, at the inside reciprocating motion of female half shell assembly 1), the inside swing joint of slip subassembly 3 has spindle unit 4 (slip subassembly 3 carries out reciprocating motion, drive spindle unit 4 forward, anti-rotation), spindle unit 4's both ends all extend to the outside of female half shell assembly 1, sub-half shell assembly 2 (after extending, spindle unit 4 can be connected with external equipment).

Referring to fig. 1, the sliding assembly 3 includes a movable sleeve 31 movably disposed inside a female half-shell assembly 1 (in order to ensure air tightness, sealing rings are connected to the outer portions of two ends of the movable sleeve 31), a plurality of mounting holes 32 (three are illustrated) are formed in the circumferential side of the movable sleeve 31, a limiting member 33 is fixed in each mounting hole 32, steel balls 34 are disposed at the end of each limiting member 33 (the steel balls 34 can roll at the end of the limiting member 33), a limiting groove 35 with a waist-shaped structure is formed in the circumferential side of the movable sleeve 31, and the limiting groove 35 is matched with the limiting bolts 13 to limit the moving distance of the movable sleeve 31.

Referring to fig. 1, the spindle assembly 4 includes a shaft rod 41 movably disposed inside a movable sleeve 31, a shaft sleeve 42 is fixedly sleeved on the outer portion of the shaft rod 41, a plurality of driven grooves 43 with arc tracks are formed on the circumferential side of the shaft sleeve 42, steel balls 34 roll in the driven grooves 43, when the movable sleeve 31 moves, the steel balls 34 are driven to move, the driven grooves 43 with arc tracks are matched, finally, the shaft rod 41 is driven to rotate, in addition, a spline groove 44 is formed on the outer surface of one end of the shaft rod 41, and the spline groove 44 is arranged, so that the whole rotary head is more convenient to connect with an external device and has higher transmission efficiency.

Referring to fig. 1, the female half shell assembly 1 includes a first shell 11, a threaded hole 12 is formed at the top end of the first shell 11, a limit bolt 13 is connected to the interior of the threaded hole 12, the bottom end of the limit bolt 13 extends to the interior of a limit groove 35, a first air cavity 15 is formed in the interior of the first shell 11, a first air hole 14 is formed in the bottom end of the first shell 11, the first air cavity 15 and the first air hole 14 are communicated, an external air source enters the first air cavity 15 from the first air hole 14, and thrust generated by air drives a movable sleeve 31 to move forward.

Referring to fig. 1, the sub-half shell assembly 2 includes a second housing 21, a second air cavity 23 is formed in the second housing 21, a second air hole 22 is formed in the bottom end of the second housing 21, the second air hole 22 and the second air cavity 23 are communicated, an external air source enters the second air cavity 23 from the second air hole 22, and thrust generated by the air drives the movable sleeve 31 to move reversely.

When the movable sleeve 31 is used, as illustrated in fig. 3 and 4, an air source is introduced into the first air hole 14, air flows into the first air cavity 15, and along with continuous introduction of the air source, the pressure in the first air cavity 15 is gradually increased, so that the movable sleeve 31 is pushed to move rightwards, the movable sleeve 31 can drive the limiting piece 33 and the steel balls 34 to move in the moving process, the steel balls 34 move along the arc track of the driven groove 43, and finally the acting force generated by the air source acts on the shaft lever 41 to promote the shaft lever 41 to rotate positively;

similarly, an air source is introduced into the second air hole 22, and finally the acting force generated by the air source acts on the shaft lever 41 to promote the shaft lever 41 to reversely rotate;

in summary, compared with the existing rotary head driven by a motor and oil pressure, the rotary head using the air source as power in the embodiment has the advantages of low cost, cleanness, environmental protection, low cost for subsequent maintenance and nursing, and suitability for wide use by enterprises.

Claims

1. The pneumatic rotary head is characterized by comprising a main half shell assembly (1) and a sub half shell assembly (2) which are fixedly connected together, wherein a sliding assembly (3) is movably arranged in the main half shell assembly (1), a main shaft assembly (4) is movably connected in the sliding assembly (3), and two ends of the main shaft assembly (4) extend to the outer parts of the main half shell assembly (1) and the sub half shell assembly (2);

the sliding assembly (3) comprises a movable sleeve (31) movably arranged in the female half-shell assembly (1), a plurality of mounting holes (32) are formed in the circumferential side of the movable sleeve (31), limiting pieces (33) are fixed in the mounting holes (32), and steel balls (34) are arranged at the end parts of the limiting pieces (33) in a rolling mode;

the main shaft assembly (4) comprises a shaft rod (41) movably arranged inside the movable sleeve (31), a shaft sleeve (42) is fixedly sleeved outside the shaft rod (41), a plurality of arc-shaped track driven grooves (43) are formed in the circumferential side of the shaft sleeve (42), and the steel balls (34) roll in the driven grooves (43).

2. A pneumatic turret according to claim 1, wherein the female half-shell assembly (1) comprises a first shell (11), a threaded hole (12) is provided in the top end of the first shell (11), and a limit bolt (13) is connected to the threaded hole (12).

3. A pneumatic turret according to claim 2, wherein the circumferential side of the movable sleeve (31) is further provided with a limiting groove (35) having a waist-round structure, and the bottom end of the limiting bolt (13) extends into the limiting groove (35).

4. A pneumatic rotary head according to claim 2, wherein the first air cavity (15) is formed in the first housing (11), the first air hole (14) is formed in the bottom end of the first housing (11), and the first air cavity (15) and the first air hole (14) are communicated.

5. A pneumatic turret according to claim 1, wherein the sub-half-shell assembly (2) includes a second housing (21), a second air chamber (23) is provided in the second housing (21), and a second air hole (22) is provided at a bottom end of the second housing (21), and the second air hole (22) and the second air chamber (23) are communicated.

6. A pneumatic turret according to claim 1, wherein the outer surface of one end of the shaft (41) is provided with spline grooves (44).