CN216028116U - High-precision B shaft device - Google Patents
High-precision B shaft device Download PDFInfo
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- CN216028116U CN216028116U CN202123060302.2U CN202123060302U CN216028116U CN 216028116 U CN216028116 U CN 216028116U CN 202123060302 U CN202123060302 U CN 202123060302U CN 216028116 U CN216028116 U CN 216028116U
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- shaft
- fluted disc
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Abstract
The utility model relates to a high-precision B-axis device.A box body cantilever is arranged at the bottom of a B-axis box body, a transverse open slot is formed between the upper surface of the box body cantilever and the lower surface of the B-axis box body, and a main spindle box is arranged in the open slot; a main shaft driving device is arranged at the axis of the B-axis box body; the outer circumference of the main shaft driving device is coaxially matched with an oil distribution ring, a B shaft mandrel and a torque motor from inside to outside in sequence, and the B shaft mandrel is connected with a main shaft power input end in a main shaft box; the bottom of the spindle box is connected with a support shaft, the outer circumference of the support shaft is supported in a through hole formed in the box body cantilever through a bearing, a hydraulic band-type brake is arranged at the bottom of the box body cantilever, and the hydraulic band-type brake is matched with the outer circumference of the support shaft to be clamped or loosened. The device is suitable for a five-axis turning and milling composite machine tool provided with a mechanical tool spindle, and not only has high rigidity, but also has high transmission precision.
Description
Technical Field
The utility model relates to a high-precision B-axis device, and belongs to the technical field of five-axis turning and milling composite machine tool spindles.
Background
The five-axis turning and milling composite machine tool integrates turning and milling functions, can be used for turning and five-axis milling, and belongs to a high-end product in the field of metal cutting machine tools. The high-precision B axis can fix the angle of the tool spindle to realize turning, can also realize fixed-angle plane machining by randomly indexing the tool spindle, can participate in linkage to realize five-axis machining, and is an important part of a five-axis turning and milling composite machine tool. At present, electric spindles are mostly arranged on a five-axis turning and milling composite machine tool, the rigidity is not high, and the processing efficiency of materials such as titanium alloy and the like which are difficult to process is not good. In addition, the high-precision B shaft is complex in structure, high in assembly difficulty and difficult to guarantee precision and reliability.
Disclosure of Invention
The utility model aims to provide a high-precision B-axis device which is suitable for a five-axis turning and milling composite machine tool provided with a mechanical tool spindle, and has high rigidity and high transmission precision.
In order to solve the above problems, the specific technical scheme of the utility model is as follows: a high-precision B-axis device is characterized in that a box body cantilever is arranged at the bottom of a B-axis box body, a transverse open slot is formed between the upper surface of the box body cantilever and the lower surface of the B-axis box body, and a main spindle box is arranged in the open slot; a main shaft driving device is arranged at the axis of the B-axis box body; the outer circumference of the main shaft driving device is coaxially matched with an oil distribution ring, a B shaft mandrel and a torque motor from inside to outside in sequence, and the B shaft mandrel is connected with a main shaft power input end in a main shaft box; the bottom of the spindle box is connected with a support shaft, the outer circumference of the support shaft is supported in a through hole formed in the box body cantilever through a bearing, a hydraulic band-type brake is arranged at the bottom of the box body cantilever, and the hydraulic band-type brake is matched with the outer circumference of the support shaft to be clamped or loosened.
The spindle driving device structurally comprises a transmission shaft vertically supported at the center of a B-axis box body through a bearing, wherein the bottom of the transmission shaft is connected with a bevel gear, and the bevel gear extends into a spindle box and is connected with a spindle power input end of the spindle box; and a power driving motor is arranged on the outer side of the B-axis box body, and an output shaft of the power driving motor is connected with the top of the transmission shaft through a belt wheel transmission device.
An indexing positioning locking device is arranged below the B-axis mandrel, and structurally comprises a fluted disc oil cylinder arranged at the bottom of an inner cavity of a B-axis box body, and a locking fluted disc is driven by the top of the fluted disc oil cylinder; and a movable fluted disc is meshed above the locking fluted disc, the top of the movable fluted disc is connected with the B-shaft spindle, and the outer circumference of the movable fluted disc is coaxially matched with the B-shaft box body through a fixed fluted disc.
The top of the fixed fluted disc is provided with a base, two vertical holes are arranged in the base, floating shafts are respectively arranged in the vertical holes, the lengths of the two floating shafts are different, the upper surface of the fixed fluted disc is provided with corresponding through holes, and the bottoms of the floating shafts penetrate through the through holes of the fixed fluted disc and are in contact with the upper surface of the locking fluted disc; the outer circumference of the floating shaft is provided with a return spring, the top of the return spring is limited on a limit table of the vertical hole of the base, and the bottom of the return spring is limited on the floating shaft; two radial holes are arranged on the base, the positions of the radial holes correspond to the positions of the vertical holes one by one, a meshing trigger contactless switch is arranged in one radial hole, a loosening trigger contactless switch is arranged in the other radial hole, and the positions of the top ends of the floating shafts with shorter lengths when the sensing heads of the meshing trigger contactless switches are in a meshing state with the locking fluted disc are consistent; the top end positions of the floating shaft with longer length when the release triggering contactless switch and the locking fluted disc are in a release state are consistent.
And a YRT turntable bearing is arranged on the outer circumference of the B shaft mandrel, and a coder is arranged on the YRT turntable bearing.
The high-precision B-axis device adopts the structure and has the following advantages:
1. the structure that B axle box and box cantilever are constituteed makes B axle box form dual bracing structure, and is compared with single support that the rigidity is high, and dual bracing is asymmetric structure, and the box cantilever size below is thinner, makes the main shaft more be close to the processing region easily. The B-axis swing is driven by a torque motor, so that the positioning is accurate, the response is fast and the efficiency is high;
2. the indexing positioning locking device adopts a three-fluted-disc structure, can meet the requirements of high-precision, high-torque and fixed-angle machining, and has the minimum indexing of 5 degrees;
3. a hydraulic band-type brake is arranged in a cantilever of the box body, and the incremental angle encoder on the YRT bearing is combined, so that accurate positioning of any angle during milling and accurate positioning during individual turning angle (not 5 degrees) can be realized.
Drawings
Fig. 1 is a perspective view of a high-precision B-axis device.
Fig. 2 is an internal cross-sectional view of the high-precision B-axis device.
Figure 3 is a block diagram of the position of the engagement triggered contactless switch of the indexing positioning locking device.
Figure 4 is a block diagram of the position of the release trigger contactless switch of the indexing position locking device.
Detailed Description
As shown in fig. 1 and 2, a high-precision B-axis device, a box body cantilever 12 is arranged at the bottom of a B-axis box body 1, a transverse open slot is formed between the upper surface of the box body cantilever 12 and the lower surface of the B-axis box body 1, and a main spindle box 10 is arranged in the open slot; a main shaft driving device is arranged at the axis of the B-axis box body 1; the outer circumference of the main shaft driving device is coaxially matched with an oil distribution ring 6, a B shaft mandrel 5 and a torque motor 2 from inside to outside in sequence, and the B shaft mandrel 5 is connected with a main shaft power input end in a main shaft box 10; the bottom of the main spindle box 10 is connected with a support shaft 11, the outer circumference of the support shaft 11 is supported in a through hole arranged in a box body cantilever 12 through a bearing, a hydraulic band-type brake 4 is arranged at the bottom of the box body cantilever 12, and the hydraulic band-type brake 4 is matched with the outer circumference of the support shaft 11 to be clamped or loosened.
The spindle driving device structurally comprises a transmission shaft 7 vertically supported in the center of a B-axis box body 1 through a bearing, a bevel gear 20 connected with the bottom of the transmission shaft 7, and a spindle power input end connected with the bevel gear 20 extending into a spindle box 10 and connected with the spindle in the spindle box 10; the outer side of the B-axis box body 1 is provided with a power driving motor 8, and an output shaft of the power driving motor 8 is connected with the top of a transmission shaft 7 through a belt wheel transmission device 9.
An indexing positioning locking device is arranged below the B-axis mandrel 5, and structurally comprises a fluted disc oil cylinder 19 arranged at the bottom of an inner cavity of the B-axis box body 1, and a locking fluted disc 16 is driven at the top of the fluted disc oil cylinder 19; and a movable fluted disc 14 is meshed above the locking fluted disc 16, the top of the movable fluted disc 14 is connected with the B-axis mandrel 5, and the outer circumference of the movable fluted disc 14 is coaxially matched with the B-axis box body 1 through a fixed fluted disc 15.
As shown in fig. 3 and 4, a base 13 is disposed on the top of the fixed toothed disc 15, two vertical holes are disposed in the base 13, floating shafts 21 are disposed in the vertical holes, the lengths of the two floating shafts 21 are different, corresponding through holes are disposed on the upper surface of the fixed toothed disc 15, and the bottoms of the floating shafts 21 penetrate through the through holes of the fixed toothed disc 15 and contact with the upper surface of the locking toothed disc 16; a return spring 22 is arranged on the outer circumference of the floating shaft 21, the top of the return spring 22 is limited on a limit table of a vertical hole of the base 13, and the bottom of the return spring 22 is limited on the floating shaft 21; two radial holes are arranged on the base 13, the positions of the radial holes correspond to the positions of the vertical holes one by one, one of the radial holes is internally provided with a meshing triggering contactless switch 23, the other radial hole is internally provided with a loosening triggering contactless switch 24, and the positions of the top ends of the floating shafts with shorter lengths when the sensing head of the meshing triggering contactless switch 23 is meshed with the locking fluted disc 16 are consistent; the unlocking trigger contactless switch 24 is consistent with the top end position of the floating shaft with longer length when the locking fluted disc 16 is in the unlocking state.
The outer circumference of the B-axis mandrel 5 is provided with a YRT turntable bearing 3, and the YRT turntable bearing 3 is provided with a coder.
The dynamic working process of the high-precision B-axis device is as follows:
1. when turning is carried out at every 5 degrees and one minute at a fixed angle, the locking fluted disc 16 is respectively meshed with the movable fluted disc 14 and the fixed fluted disc 15, so that the spindle box 10 is driven by the B-axis spindle 5 to be accurately positioned, the power driving motor 8 is static during locking, the transmission shaft 7 is fixed and does not rotate, and the spindle in the spindle box 10 rotates, thereby realizing the turning function;
2. when any angle is milled, the locking fluted disc 16 is respectively separated from the movable fluted disc 14 and the fixed fluted disc 15, the torque motor 2 rotates to an accurate angle according to an angle signal with a coder on the YRT turntable bearing 3, the hydraulic band-type brake 4 clamps the support shaft 11 so as to fix the main spindle box 10, and at the moment, the power driving motor 8 rotates to drive the belt wheel transmission device 9 and the transmission shaft 7 to drive the main spindle to rotate, so that the milling function is realized;
3. during linkage machining, the locking fluted disc 16 is separated from the movable fluted disc 14 and the fixed fluted disc 15 respectively, the hydraulic band-type brake 4 is loosened, and the torque motor 2 rotates in real time according to an angle signal of a self-contained encoder on the YRT turntable bearing 3 to drive the B-axis mandrel 5 to rotate in a linkage manner.
Claims (5)
1. A high accuracy B axle device which characterized in that: a box body cantilever (12) is arranged at the bottom of the B-axis box body (1), a transverse open slot is formed between the upper surface of the box body cantilever (12) and the lower surface of the B-axis box body (1), and a spindle box (10) is arranged in the open slot; a main shaft driving device is arranged at the axis of the B-axis box body (1); the outer circumference of the main shaft driving device is coaxially matched with an oil distribution ring (6), a B-shaft mandrel (5) and a torque motor (2) from inside to outside in sequence, and the B-shaft mandrel (5) is connected with a main shaft power input end in a main shaft box (10); the bottom of the spindle box (10) is connected with a support shaft (11), the outer circumference of the support shaft (11) is supported in a through hole formed in the box body cantilever (12) through a bearing, a hydraulic band-type brake (4) is arranged at the bottom of the box body cantilever (12), and the hydraulic band-type brake (4) is matched with the outer circumference of the support shaft (11) to be clamped or loosened.
2. The high accuracy B-axis apparatus of claim 1, wherein: the spindle driving device structurally comprises a transmission shaft (7) vertically supported through a bearing at the center of a B-axis box body (1), wherein the bottom of the transmission shaft (7) is connected with a bevel gear (20), and the bevel gear (20) extends into a spindle box (10) and is connected with a spindle power input end of the spindle box (10); the outer side of the B-axis box body (1) is provided with a power driving motor (8), and an output shaft of the power driving motor (8) is connected with the top of the transmission shaft (7) through a belt wheel transmission device (9).
3. The high accuracy B-axis apparatus of claim 1, wherein: an indexing positioning locking device is arranged below the B-axis mandrel (5), and structurally comprises a fluted disc oil cylinder (19) arranged at the bottom of an inner cavity of the B-axis box body (1), and a locking fluted disc (16) is driven by the top of the fluted disc oil cylinder (19); a movable fluted disc (14) is meshed above the locking fluted disc (16), the top of the movable fluted disc (14) is connected with the B-shaft mandrel (5), and the outer circumference of the movable fluted disc (14) is coaxially matched with the B-shaft box body (1) through a fixed fluted disc (15).
4. The high-precision B-axis apparatus of claim 3, wherein: the top of the fixed fluted disc (15) is provided with a base (13), two vertical holes are arranged in the base (13), floating shafts (21) are respectively arranged in the vertical holes, the lengths of the two floating shafts (21) are unequal, the upper surface of the fixed fluted disc (15) is provided with corresponding through holes, and the bottoms of the floating shafts (21) penetrate through the through holes of the fixed fluted disc (15) and are in contact with the upper surface of the locking fluted disc (16); a return spring (22) is arranged on the outer circumference of the floating shaft (21), the top of the return spring (22) is limited on a limit table of a vertical hole of the base (13), and the bottom of the return spring (22) is limited on the floating shaft (21); two radial holes are arranged on the base (13), the positions of the radial holes correspond to the positions of the vertical holes one by one, one of the radial holes is internally provided with a meshing triggering contactless switch (23), the other radial hole is internally provided with a loosening triggering contactless switch (24), and the positions of the top ends of the short floating shafts are consistent when the sensing head of the meshing triggering contactless switch (23) is meshed with the locking fluted disc (16); the top end position of the floating shaft with longer length is consistent when the release trigger non-contact switch (24) and the locking fluted disc (16) are in a release state.
5. The high accuracy B-axis apparatus of claim 1, wherein: the outer circumference of the B-axis mandrel (5) is provided with a YRT turntable bearing (3), and the YRT turntable bearing (3) is provided with an encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123060302.2U CN216028116U (en) | 2021-12-08 | 2021-12-08 | High-precision B shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123060302.2U CN216028116U (en) | 2021-12-08 | 2021-12-08 | High-precision B shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216028116U true CN216028116U (en) | 2022-03-15 |
Family
ID=80615836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123060302.2U Active CN216028116U (en) | 2021-12-08 | 2021-12-08 | High-precision B shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216028116U (en) |
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2021
- 2021-12-08 CN CN202123060302.2U patent/CN216028116U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110000 no.17a1-8, Kaifa Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: General Technology Group Shenyang Machine Tool Co.,Ltd. Address before: 110000 no.17a1-8, Kaifa Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee before: SHENYANG MACHINE TOOL (GROUP) CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |