High-precision full-automatic universal milling head

Abstract

The invention discloses a high-precision full-automatic universal milling head. The high-precision full-automatic universal milling head comprises an A-axis module, a B-axis module, a C-axis module and a mounting sleeve mounted on a machine tool body, the C-axis module comprises a machine tool main shaft, a C-axis shaft sleeve is rotationally installed on the outer side of the machine tool main shaft and rotationally installed in an installation sleeve, a first linear bearing is arranged between the installation sleeve and the C-axis shaft sleeve, a B-axis shaft sleeve is installed at the lower end of the C-axis shaft sleeve, and a second linear bearing is arranged between the B-axis shaft sleeve and the installation sleeve. And a B-axis rotating shaft is rotationally installed in the B-axis shaft sleeve through a first bearing assembly and a second bearing assembly, an A-axis shaft sleeve is installed at the end of the B-axis shaft sleeve through a hydraulic push-pull assembly, and an A-axis rotating shaft is rotationally installed in the A-axis shaft sleeve. The phenomenon of tooth clamping is reduced, the service life is prolonged, and therefore the use requirement is better met.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool processing, in particular to a high-precision fully automatic universal milling head. Background Art

[0002] The milling head is a tool installed on the milling machine to drive the milling cutter to rotate and process various surfaces of the workpiece. The milling head mainly moves by its own high-speed rotation, and the movement of the workpiece and the milling cutter is the feed movement. It can cut planes, grooves, gear teeth and spline shafts, etc. It has high efficiency and has been widely used in the machinery manufacturing and repair fields. At present, the milling head often needs to be manually adjusted in the milling direction, and the control accuracy is low; and the direction of manual force is difficult to accurately control, which can easily cause equipment damage.

[0003] In order to solve the above problems, the invention patent application with application publication number CN112974944A discloses a milling head with high-precision control of milling direction. When the milling head adjusts the A-axis angle, the hydraulic lifting structure presses the A-axis module away from the C-axis module, the first end gear disc disengages from the second end gear disc, the first clamping block falls into the first clamping groove, the C-axis and the A-axis are still engaged, and the angle of the A-axis module is adjusted by controlling the rotation of the C-axis. The control accuracy is high and the milling head will not be damaged. When adjusting the spindle angle, the hydraulic push-pull structure presses the spindle module away from the A-axis module, the third end gear disc disengages from the fourth end gear disc, the second clamping block is clamped into the second clamping groove, and the spindle module angle is adjusted by controlling the rotation of the A-axis. The high-precision free adjustment of the milling direction of the milling head is achieved.

[0004] However, when the milling head is used, since the center of gravity of the milling head is distributed on the right side, after long-term use, the position of the rotating shaft may shift, resulting in tooth jamming, affecting the positioning accuracy and reducing the service life of the device. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision fully automatic universal milling head to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-precision fully automatic universal milling head, comprising: an A-axis module, a B-axis module, a C-axis module and a mounting sleeve installed on a machine tool body; the C-axis module comprises a machine tool spindle, a C-axis sleeve is rotatably installed on the outer side of the machine tool spindle, the C-axis sleeve is rotatably installed in the mounting sleeve, a linear bearing 1 is arranged between the mounting sleeve and the C-axis sleeve, a B-axis sleeve is installed on the lower end of the C-axis sleeve, a linear bearing 2 is arranged between the B-axis sleeve and the mounting sleeve, a B-axis rotating shaft is rotatably installed in the B-axis sleeve through bearing components 1 and 2, an A-axis sleeve is installed on the end of the B-axis sleeve through a hydraulic push-pull assembly, an A-axis rotating shaft is rotatably installed in the A-axis sleeve, a positioning outer gear ring is installed on the left side of the B-axis sleeve, a positioning inner gear is installed on the right side of the A-axis sleeve, and chamfers are arranged on opposite sides of the positioning outer gear ring and the positioning inner gear.

[0008] As a preferred solution, a hydraulic lifting assembly is arranged between the C-axis sleeve and the mounting sleeve, and the hydraulic lifting assembly includes a rising oil chamber and a falling oil chamber arranged between the C-axis sleeve and the mounting sleeve.

[0009] As a preferred solution, a driving internal gear is installed on the machine tool spindle, and a driving external gear ring is installed on the C-axis sleeve.

[0010] As a preferred solution, the lower end of the machine tool spindle extends into the B-axis sleeve and is equipped with a spindle bevel gear, and the spindle bevel gear is meshed and connected with the B-axis bevel gear on the right half of the B-axis rotating shaft.

[0011] As a preferred solution, a second B-axis bevel gear is installed on the left end of the B-axis rotating shaft, an A-axis bevel gear is installed on the A-axis rotating shaft, and the second B-axis bevel gear is meshedly connected with the A-axis bevel gear.

[0012] As a preferred solution, the hydraulic push-pull assembly includes a disengagement oil chamber and a tensioning oil chamber arranged between the B-axis sleeve and the A-axis sleeve.

[0013] As a preferred solution, a right-end gear disc is installed on the right side of the A-axis sleeve, and a left-end gear disc is installed on the left side of the B-axis sleeve, and the left-end gear disc is meshed and connected with the right-end gear disc.

[0014] As a preferred solution, an upper toothed disc is fixed to the lower end of the mounting sleeve, a lower toothed disc is mounted on the upper end of the B-axis sleeve, and the lower toothed disc is meshingly connected with the upper toothed disc.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a linear bearing 1, the stability of the rotation of the C-axis sleeve in the mounting sleeve can be improved; by setting a linear bearing 2, the stability of the rotation of the B-axis sleeve can be improved; by setting a bearing assembly 1 and a bearing assembly 2, the stability of the B rotating shaft can be improved, and the possibility of the C-axis sleeve, the B-axis sleeve and the B-axis rotating shaft being offset can be effectively reduced, the phenomenon of the teeth being stuck can be reduced, and the service life can be extended, thereby better meeting the use requirements. The present invention has a reasonable structure, can effectively reduce the possibility of the C-axis sleeve, the B-axis sleeve and the B-axis rotating shaft being offset, the phenomenon of the teeth being stuck can be reduced, and the service life can be extended, thereby better meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a high-precision fully automatic universal milling head;

[0017] Figure 2 A high-precision fully automatic universal milling head Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 A high-precision fully automatic universal milling head Figure 1 Enlarged structural diagram at B in the middle.

[0019] In the figure: 1. Mounting sleeve; 10. A-axis module; 11. A-axis sleeve; 111. A-axis bevel gear; 12. A-axis rotating shaft; 20. B-axis module; 21. B-axis rotating shaft; 211. B-axis bevel gear one; 212. B-axis bevel gear two; 22. B-axis sleeve; 23. Bearing assembly one; 24. End cover; 25. Bearing assembly two; 26. Disengage oil chamber; 27. Tighten oil chamber; 30. C-axis module; 31. Machine tool spindle; 311. Spindle bevel gear; 312. Drive internal gear; 313. C-axis sleeve; 314. Drive external gear ring; 32. Lift oil chamber; 33. Drop oil chamber; 34. Linear bearing one; 35. Linear bearing two; 4. Upper end gear disc; 41. Lower end gear disc; 5. Left end gear disc; 51. Right end gear disc; 52. Positioning internal gear; 53. Positioning external gear ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: See Figures 1 to 3A high-precision fully automatic universal milling head comprises: an A-axis module 10, a B-axis module 20, a C-axis module 30 and a mounting sleeve 1 mounted on a machine tool body; the C-axis module 30 comprises a machine tool spindle 31, a C-axis sleeve 313 is rotatably mounted on the outer side of the machine tool spindle 31, the C-axis sleeve 313 is rotatably mounted in the mounting sleeve 1, a linear bearing 34 is arranged between the mounting sleeve 1 and the C-axis sleeve 313, a B-axis sleeve 22 is mounted on the lower end of the C-axis sleeve 313, the B-axis sleeve 22 and the mounting sleeve 1 are connected to each other. A linear bearing 2 35 is arranged between the sleeves 1, the B-axis shaft 21 is rotatably mounted in the B-axis sleeve 22 through the bearing assembly 1 23 and the bearing assembly 2 25, the end of the B-axis sleeve 22 is mounted with the A-axis sleeve 11 through the hydraulic push-pull assembly, the A-axis shaft 12 is rotatably mounted in the A-axis sleeve 11, a positioning outer gear ring 53 is installed on the left side of the B-axis sleeve 22, and a positioning inner gear 52 is installed on the right side of the A-axis sleeve 11, and chamfers are arranged on the opposite sides of the positioning outer gear ring 53 and the positioning inner gear 52. In this embodiment, the milling cutter is installed at the end of the A-axis shaft 12.

[0022] By setting a linear bearing 1 34, the stability of the rotation of the C-axis sleeve 313 in the mounting sleeve 1 can be improved; by setting a linear bearing 2 35, the stability of the rotation of the B-axis sleeve 22 can be improved; by setting a bearing assembly 1 23 and a bearing assembly 2 25, the stability of the B-axis rotating shaft 21 can be improved, and the possibility of the C-axis sleeve 313, the B-axis sleeve 22 and the B-axis rotating shaft 21 being offset can be effectively reduced, the phenomenon of tooth jamming can be reduced, and the service life can be extended, so as to better meet the use requirements; by setting chamfers on the opposite sides of the positioning outer gear ring 53 and the positioning inner gear 52, it is convenient to perform preliminary positioning of the A-axis sleeve 11 and subsequent fine positioning, and the positioning accuracy can be improved, so as to better meet the use requirements.

[0023] As a further solution, a hydraulic lifting assembly is provided between the C-axis sleeve 313 and the mounting sleeve 1 , and the hydraulic lifting assembly includes a rising oil chamber 32 and a falling oil chamber 33 provided between the C-axis sleeve 313 and the mounting sleeve 1 .

[0024] By filling oil into the downward oil chamber 33 and extracting the oil in the rising oil chamber 32, the C-axis sleeve 313 can be controlled to drive the B-axis sleeve 22 to move downward; by filling oil into the rising oil chamber 32 and extracting the oil in the downward oil chamber 33, the C-axis sleeve 313 can be controlled to drive the B-axis sleeve 22 to move upward.

[0025] As a further solution, a driving internal gear 312 is installed on the machine tool spindle 31, a driving external gear ring 314 is installed on the C-axis sleeve 313, an upper gear plate 4 is fixed to the lower end of the mounting sleeve 1, and a lower gear plate 41 is installed on the upper end of the B-axis sleeve 22, and the lower gear plate 41 is meshed and connected with the upper gear plate 4.

[0026] When the hydraulic lifting assembly drives the C-axis sleeve 313 to move downward, the lower end gear plate 41 is separated from the upper end gear plate 4, and the driving inner gear 312 is engaged with the driving outer gear ring 314. At this time, the rotation of the machine tool spindle 31 will drive the B-axis sleeve 22 to rotate around the center line of the machine tool spindle 31.

[0027] As a further solution, the lower end of the machine tool spindle 31 extends into the B-axis sleeve 22 and is equipped with a spindle bevel gear 311, which is meshed and connected with the B-axis bevel gear 1 211 on the right half of the B-axis rotating shaft 21. By setting the spindle bevel gear 311 to cooperate with the B-axis bevel gear 1 211, the rotation of the B-axis rotating shaft 21 can be controlled by the machine tool spindle 31.

[0028] As a further solution, a second B-axis bevel gear 212 is installed at the left end of the B-axis rotating shaft 21, and an A-axis bevel gear 111 is installed on the A-axis rotating shaft 12, and the second B-axis bevel gear 212 is meshed and connected with the A-axis bevel gear 111. By setting the second B-axis bevel gear 212 to cooperate with the A-axis bevel gear 111, the B-axis rotating shaft 21 can be driven by the machine tool spindle 31 while the A-axis rotating shaft 12 can be driven to rotate, thereby realizing the rotation of the milling cutter.

[0029] As a further solution, the hydraulic push-pull assembly includes a disengagement oil chamber 26 and a tensioning oil chamber 27 arranged between the B-axis sleeve 22 and the A-axis sleeve 11. A right-end gear plate 51 is installed on the right side of the A-axis sleeve 11, and a left-end gear plate 5 is installed on the left side of the B-axis sleeve 22. The left-end gear plate 5 is meshed and connected with the right-end gear plate 51.

[0030] By filling oil into the disengaging oil chamber 26 and extracting the oil in the tightening oil chamber 27, the left end gear disc 5 can be separated from the right end gear disc 51. At this time, the machine tool spindle 31 is rotated, and the A-axis rotating shaft 12 can rotate around the center of the B-axis rotating shaft 21 while rotating on itself, thereby realizing the adjustment of the inclination angle of the A-axis rotating shaft 12; by filling oil into the tightening oil chamber 27 and extracting the oil in the disengaging oil chamber 26, the left end gear disc 5 can be meshed with the right end gear disc 51. At this time, the inclination angle of the A-axis rotating shaft 12 can be fixed, which is convenient for processing.

[0031] The working principle of the present invention is as follows: when in use, firstly, by filling the disengaging oil chamber 26 with oil and extracting the oil in the tightening oil chamber 27, the left end gear disc 5 and the right end gear disc 51 can be separated. At the same time, by rotating the machine tool spindle 31, the A-axis rotating shaft 12 can rotate around the center of the B-axis rotating shaft 21 while rotating on itself, thereby adjusting the inclination angle of the A-axis rotating shaft 12. Subsequently, by filling the tightening oil chamber 27 with oil and extracting the oil in the disengaging oil chamber 26, the left end gear disc 5 and the right end gear disc 51 can be meshed. At this time, the inclination angle of the A-axis rotating shaft 12 can be fixed, and milling processing can be performed. After the milling processing of this position is completed, the downward oil chamber 33 is filled with oil and By extracting the oil in the rising oil chamber 32, the C-axis sleeve 313 can be controlled to drive the B-axis sleeve 22 to move downward. At this time, the lower end gear plate 41 is separated from the upper end gear plate 4, and the driving internal gear 312 is engaged with the driving external gear ring 314. When the machine tool spindle 31 rotates, the A-axis shaft 12 can be driven to rotate around the central axis of the machine tool spindle 31, so as to adjust the processing position. After the adjustment is completed, by filling oil into the rising oil chamber 32 and extracting the oil in the falling oil chamber 33, the C-axis sleeve 313 can be controlled to drive the B-axis sleeve 22 to move upward, so that the lower end gear plate 41 is engaged with the upper end gear plate 4, and the driving internal gear 312 is separated from the driving external gear ring 314, and milling processing can be performed again.

[0032] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

Claims

1. A high-precision fully automatic universal milling head, characterized in that: include: An A-axis module (10), a B-axis module (20), a C-axis module (30), and a mounting sleeve (1) mounted on a machine tool body; The C-axis module (30) comprises a machine tool spindle (31), a C-axis sleeve (313) is rotatably mounted on the outer side of the machine tool spindle (31), the C-axis sleeve (313) is rotatably mounted in a mounting sleeve (1), a linear bearing (34) is arranged between the mounting sleeve (1) and the C-axis sleeve (313), a B-axis sleeve (22) is mounted on the lower end of the C-axis sleeve (313), a linear bearing (35) is arranged between the B-axis sleeve (22) and the mounting sleeve (1), and the B-axis sleeve (22) is A B-axis rotating shaft (21) is rotatably mounted inside the shaft through bearing assembly 1 (23) and bearing assembly 2 (25); an A-axis sleeve (11) is mounted on the end of the B-axis sleeve (22) through a hydraulic push-pull assembly; an A-axis rotating shaft (12) is rotatably mounted inside the A-axis sleeve (11); a positioning outer gear ring (53) is mounted on the left side of the B-axis sleeve (22); a positioning inner gear (52) is mounted on the right side of the A-axis sleeve (11); chamfers are arranged on opposite sides of the positioning outer gear ring (53) and the positioning inner gear (52).

2. A high-precision fully automatic universal milling head according to claim 1, characterized in that: A hydraulic lifting assembly is arranged between the C-axis sleeve (313) and the mounting sleeve (1), and the hydraulic lifting assembly comprises a rising oil chamber (32) and a falling oil chamber (33) arranged between the C-axis sleeve (313) and the mounting sleeve (1).

3. A high-precision fully automatic universal milling head according to claim 2, characterized in that: A driving internal gear (312) is installed on the machine tool main shaft (31), and a driving external gear ring (314) is installed on the C-axis sleeve (313).

4. A high-precision fully automatic universal milling head according to claim 3, characterized in that: The lower end of the machine tool spindle (31) extends into the B-axis sleeve (22) and is provided with a spindle bevel gear (311), and the spindle bevel gear (311) is meshedly connected with a B-axis bevel gear 1 (211) on the right half of the B-axis rotating shaft (21).

5. A high-precision fully automatic universal milling head according to claim 4, characterized in that: The left end of the B-axis rotating shaft (21) is provided with a second B-axis bevel gear (212), and the A-axis bevel gear (111) is provided on the A-axis rotating shaft (12), and the second B-axis bevel gear (212) is meshedly connected with the A-axis bevel gear (111).

6. A high-precision fully automatic universal milling head according to claim 5, characterized in that: The hydraulic push-pull assembly comprises a disengagement oil chamber (26) and a tensioning oil chamber (27) arranged between the B-axis shaft sleeve (22) and the A-axis shaft sleeve (11).

7. A high-precision fully automatic universal milling head according to claim 6, characterized in that: A right end toothed disc (51) is installed on the right side of the A-axis sleeve (11), and a left end toothed disc (5) is installed on the left side of the B-axis sleeve (22), and the left end toothed disc (5) is meshingly connected with the right end toothed disc (51).

8. The high-precision fully automatic universal milling head according to claim 7, characterized in that: An upper toothed disc (4) is fixed to the lower end of the mounting sleeve (1), a lower toothed disc (41) is mounted to the upper end of the B-axis sleeve (22), and the lower toothed disc (41) is meshingly connected to the upper toothed disc (4).

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