CN211490647U - Power head structure of cutter unfolding - Google Patents
Power head structure of cutter unfolding Download PDFInfo
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- CN211490647U CN211490647U CN201921836345.5U CN201921836345U CN211490647U CN 211490647 U CN211490647 U CN 211490647U CN 201921836345 U CN201921836345 U CN 201921836345U CN 211490647 U CN211490647 U CN 211490647U
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- main shaft
- cutter
- sliding block
- screw rod
- oil distribution
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Abstract
The utility model discloses a power head structure of a cutter unfolding, which relates to the field of machine tool parts and mainly comprises a main shaft, a lead screw, a slide block, a cutter unfolding disc and a main shaft box body, wherein the main shaft is supported on the main shaft box body through two main shaft bearings, and an external driving mechanism drives the main shaft to rotate through a driving belt wheel to drive a cutter on the cutter unfolding disc to rotate; the center of the cutter unfolding disc is provided with a sliding block which can move back and forth along the axial direction of the main shaft, the helical tooth structures on two sides of the sliding block drive the radial cutter body sliding rails to move radially, and the cutter arranged on the helical tooth structures is driven by the cutter body sliding rails to realize radial adjustment of the cutter. The utility model has the advantages that: the structure is simple, and the main shaft meets the standard of a machine tool; the automatic lubrication function is realized by rotating the oil distribution end; the driving rigidity of the cutter expanding is extremely high, and the cutter expanding device can provide guarantee for high-precision and large-allowance cutting; the heat influence of the cutter unfolding driving mechanism and the main shaft is extremely small, the influence on the machining precision is extremely small, and the subsequent measurement compensation requirements can be greatly reduced on the control of the cutter unfolding.
Description
Technical Field
The utility model relates to a field of lathe part, concretely relates to exhibition sword power head structure.
Background
The existing driving mode of the cutter expanding disc is realized by adopting a proportional servo hydraulic oil cylinder fixed on a sliding table at the rear end of a main shaft to transmit the push-pull force of the oil cylinder to a cutter disc pull rod through a bearing group which is isolated from rotation, or by replacing a proportional hydraulic servo oil cylinder with a screw nut sliding table and driving the cutter disc pull rod to move back and forth through an angular thrust bearing.
The existing design has the following defects: the driving structure is large, and particularly, a long driving part is needed at the rear end of the shaft, so that the appearance volume ratio is large; the tension of the pull rod needs to be driven by the pull rod of the main shaft, the driving chain is closed through the main shaft, the position of the pull rod is directly influenced by temperature rise and thermal deformation when the main shaft runs, and a positioning error exists in the processing of a product; in addition, the transmission chain transmits the pulling force after isolated rotation through the axial thrust bearing, the transmission path is long, the transmission rigidity is reduced, only small-load processing can be carried out on the reaction to the processing effect, and vibration is easy to occur during large-load cutting processing; the axial transmission structure is complex, so that reliable and automatic lubrication of the cutter expanding disc is difficult to realize, a lubricating oil path in the pull rod can be interrupted at the position of the isolating bearing, or a complex lubricating adapter is needed for switching, the system cost is improved, and the reliability is reduced; the hydraulic servo needs a precise and stable proportional hydraulic control system, the system is complex, the requirement on daily maintenance is high, and the maintenance difficulty is high. These drawbacks are in need of improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide an exhibition sword power head structure, can be used to the special machine of exhibition sword of high performance, realize the processing of high accuracy, high strength.
The purpose of the utility model is accomplished through following technical scheme: the power head structure of the cutter unfolding mainly comprises a main shaft, a screw rod, a sliding block, a cutter unfolding disc and a main shaft box body, wherein the main shaft is supported on the main shaft box body through a main shaft bearing A and a main shaft bearing B; the center of the cutter unfolding disc is provided with a sliding block which can move back and forth along the axial direction of the main shaft, the helical tooth structures on two sides of the sliding block drive the radial cutter body slide rail to move radially, and the cutter arranged on the helical tooth structures is driven by the cutter body slide rail to realize radial adjustment on the cutter; a screw rod is arranged at the front end of the main shaft and used for driving a sliding block, the screw rod is arranged in a nut seat sleeve through a nut, and the nut seat sleeve is arranged in the main shaft; the screw rod is driven by a belt wheel at the rear end of the nut seat sleeve, and the accurate position control of the screw rod is realized by controlling the differential speed between the belt wheel and the main shaft.
Furthermore, the nut seat sleeve is installed at the front end of the main shaft through two bearings which are paired and pre-tightened, and an auxiliary support bearing at the rear end of the main shaft provides auxiliary support for the nut seat sleeve.
Furthermore, an oil distribution shaft is arranged in the nut seat sleeve, the front part of the oil distribution shaft penetrates through the screw rod and is connected with the sliding block, the tail part of the oil distribution shaft is connected with a rotary oil distribution end, lubricating oil is supplied to the rotary oil distribution end from a centralized lubricating system of the machine tool, is conveyed to the screw rod through the oil distribution shaft and then is supplied to the sliding block, and therefore supply is achieved.
As the utility model discloses structural improvement, the lead screw is isometric with the main shaft, supplies lubricating oil to the slider through the rotatory distribution of oil end of connecting at the lead screw afterbody.
The utility model has the advantages that:
1. the structure is simple, the appearance adopts a standard main shaft which accords with the standard of a machine tool, and the design of the machine tool is ensured to be compact;
2. the automatic lubrication function is realized by rotating the oil distribution end;
3. the driving rigidity of the cutter expanding is extremely high, and the cutter expanding device can provide guarantee for high-precision and large-allowance cutting;
4. the heat influence of the cutter unfolding driving mechanism and the main shaft is extremely small, the influence on the machining precision is extremely small, and the subsequent measurement compensation requirements can be greatly reduced on the control of the cutter unfolding.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Description of reference numerals: the main shaft device comprises a main shaft bearing A1, a main shaft bearing B2, a main shaft 3, a driving belt wheel 4, a belt wheel 5, a screw rod 6, a slide block 7, a nut seat sleeve 8, a bearing 9, an auxiliary supporting bearing 10, a nut 15, a cutter body slide rail 21, a cutter expanding disc 22, a cutter 30, a rotary oil distribution end 40, a main shaft box body 51 and an oil distribution shaft 61.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in fig. 1 and 2, the cutter expanding power head structure mainly includes a main shaft 3, a screw rod 6, a slider 7, a cutter expanding disc 22 and a main shaft box 51, wherein the main shaft 3 is supported on the main shaft box 51 through a main shaft bearing a1 and a main shaft bearing B2, and an external driving mechanism drives the main shaft 3 to rotate through a driving pulley 4 mounted at the rear end of the main shaft 3, so as to drive a cutter 30 mounted on the cutter expanding disc 22 at the front end of the main shaft 3 to rotate, thereby achieving main driving of cutting; the center of the cutter expanding disc 22 is provided with a sliding block 7 which can move back and forth along the axial direction of the main shaft 3, the helical tooth structures at two sides of the sliding block 7 drive the radial cutter body slide rail 21 to move radially, and the cutter 30 arranged on the sliding block 7 is driven by the cutter body slide rail 21 to realize radial adjustment of the cutter 30; a screw rod 6 is arranged at the front end of the main shaft 3 and used for driving a sliding block 7, the screw rod 6 is arranged in a nut seat sleeve 8 through a nut 15, the nut seat sleeve 8 is arranged at the front end of the main shaft 3 through two bearings 9 which are paired and pre-tightened, and an auxiliary support bearing 10 at the rear end of the main shaft 3 provides auxiliary support for the nut seat sleeve 8; the screw rod 6 is driven by a belt wheel 5 at the rear end of a nut seat sleeve 8, and the accurate position control of the screw rod 6 is realized by controlling the differential speed between the belt wheel 5 and the main shaft 3 (realized by utilizing the U-axis control function of a numerical control system); an oil distribution shaft 61 is arranged in the nut seat sleeve 8, the front part of the oil distribution shaft 61 penetrates through the screw rod 6 and is connected with the sliding block 7, the tail part of the oil distribution shaft is connected with the rotary oil distribution end 40, lubricating oil is supplied to the rotary oil distribution end 40 from a centralized lubricating system of a machine tool, is conveyed to the screw rod 6 through the oil distribution shaft 61 and then is supplied to the sliding block 7, and supply is achieved.
Preferably, the diameter of the screw rod 6 is 12 mm-40 mm, and high radial driving rigidity can be realized by directly connecting different expander disks 22 with the slide block 7.
Preferably, the effective length of the screw rod 6 is basically limited by the driving stroke requirement of the central slider 7, and can be only 50 mm-200 mm according to the structural design, so that the driving rigidity of the screw rod 6 can reach a high degree, and the expander disc 22 can drive heavy-load cutting under the same specification.
As a structural improvement of this embodiment, the lead screw 6 is designed to have the same length as the spindle 3, and the lubricant is directly supplied to the slider 7 through a rotary lubricant distribution end 40 connected to the tail of the lead screw 6.
The utility model discloses a theory of operation: an external driving mechanism is connected with and drives a driving belt wheel 4 arranged at the rear end of the main shaft 3, so that the main shaft 3 is driven to rotate, and a cutter 30 arranged on a cutter expanding disc 22 at the front end of the main shaft 3 is driven to rotate, so that the main driving of cutting machining is realized; when the slide block 7 at the center of the cutter expanding disc 22 moves back and forth along the axial direction of the main shaft, the helical tooth structures at two sides of the slide block 7 drive the radial cutter body slide rail 21 to move radially, so that the cutter 30 arranged on the slide block is driven to realize radial adjustment of the cutter 30.
When the radial adjustment and the axial feed of the spindle 3 achieve precise transmission control, it is possible to carry out circumferential machining of the workpiece with the workpiece fixed, which is usually done by rotating the workpiece on a lathe. Because the workpiece can be clamped on the fixed tool, a plurality of different processing parts of the workpiece can be simultaneously processed, the exchange clamping of the workpiece is rapidly realized, the processing technology is greatly simplified, and the efficiency can be greatly improved in the processing of certain specific products. Use the car processing of current cross as an example, adopt the utility model discloses a structure owing to can realize simultaneous processing, car processing efficiency improves 5 ~ 10 times.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (4)
1. The utility model provides a exhibition sword power head structure which characterized in that: the automatic expanding machine mainly comprises a main shaft (3), a screw rod (6), a sliding block (7), an expanding cutter head (22) and a main shaft box body (51), wherein the main shaft (3) is supported on the main shaft box body (51) through a main shaft bearing A (1) and a main shaft bearing B (2), and an external driving mechanism drives the main shaft (3) to rotate through a driving belt wheel (4) arranged at the rear end of the main shaft (3), so that a cutter (30) arranged on the expanding cutter head (22) at the front end of the main shaft (3) is driven to rotate; the center of the cutter expanding disc (22) is provided with a sliding block (7) which can move back and forth along the axial direction of the main shaft (3), the helical tooth structures at two sides of the sliding block (7) drive the radial cutter body sliding rail (21) to move radially, and the cutter (30) arranged on the helical tooth structures is driven by the cutter body sliding rail (21) to realize radial adjustment of the cutter (30); a screw rod (6) is arranged at the front end of the main shaft (3) and used for driving a sliding block (7), the screw rod (6) is arranged in a nut seat sleeve (8) through a nut (15), and the nut seat sleeve (8) is arranged in the main shaft (3); the screw rod (6) is driven by a belt wheel (5) at the rear end of the nut seat sleeve (8), and the accurate position control of the screw rod (6) is realized by controlling the differential speed between the belt wheel (5) and the main shaft (3).
2. The tool holder power head structure of claim 1, wherein: the nut seat sleeve (8) is arranged at the front end of the main shaft (3) through two bearings (9) which are paired and pre-tightened, and an auxiliary support bearing (10) at the rear end of the main shaft (3) provides auxiliary support for the nut seat sleeve (8).
3. The tool holder power head structure of claim 1 or 2, wherein: an oil distribution shaft (61) is arranged in the nut seat sleeve (8), the front part of the oil distribution shaft (61) penetrates through the screw rod (6) and is connected with the sliding block (7), the tail part of the oil distribution shaft is connected with the rotary oil distribution end (40), lubricating oil is supplied to the rotary oil distribution end (40) from a centralized lubricating system of a machine tool, and is conveyed to the screw rod (6) through the oil distribution shaft (61) and then to the sliding block (7) to realize supply.
4. The tool holder power head structure of claim 1 or 2, wherein: the lead screw (6) is equal in length to the main shaft (3), and lubricating oil is supplied to the sliding block (7) through a rotary oil distribution end (40) connected to the tail of the lead screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921836345.5U CN211490647U (en) | 2019-10-29 | 2019-10-29 | Power head structure of cutter unfolding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921836345.5U CN211490647U (en) | 2019-10-29 | 2019-10-29 | Power head structure of cutter unfolding |
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| Publication Number | Publication Date |
|---|---|
| CN211490647U true CN211490647U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921836345.5U Active CN211490647U (en) | 2019-10-29 | 2019-10-29 | Power head structure of cutter unfolding |
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| CN (1) | CN211490647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860933A (en) * | 2019-10-29 | 2020-03-06 | 万向钱潮股份有限公司 | Exhibition sword unit head structure |
-
2019
- 2019-10-29 CN CN201921836345.5U patent/CN211490647U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860933A (en) * | 2019-10-29 | 2020-03-06 | 万向钱潮股份有限公司 | Exhibition sword unit head structure |
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Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: No.1 Wanxiang Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |