A portable on-site processing lathe

Abstract

The present invention discloses a portable on-site processing lathe, comprising a driving structure, a rotating structure, and a processing structure. The driving structure comprises a spindle servo motor and a speed regulating motor, the rotating structure comprises a rotating body, and the processing structure comprises a tool holder. One end of the rotating body is connected to the tool holder via a large gear meshing with a small gear. A supporting fixed shaft is passed through the rotating body, a trapezoidal screw is provided at the bottom of the supporting fixed shaft, the trapezoidal screw is connected to a connecting support via a guide nut, and the end of the supporting fixed shaft is mounted on the workpiece to be processed via a flange. Through the combination of the rotating body, the inner sleeve, and the trapezoidal screw, the turning tool can move in the axial and circumferential directions, and the turning tool can cut the workpiece in both the axial and circumferential directions. The axial and circumferential movements are integrated into one device, effectively reducing the working space of the lathe.

Description

Technical Field

[0001] The invention relates to the technical field of processing equipment, in particular to a portable on-site processing lathe. Background Art

[0002] For many years, the manufacturing and on-site repair of large equipment in industries such as shipbuilding, marine engineering, hydropower and wind power generation, steelmaking, petrochemicals, mining, and construction machinery relied on simple, cumbersome traditional equipment, or relied entirely on manual polishing. Some large parts or equipment could no longer be processed on fixed machines in the workshop, requiring on-site machining to be performed by attaching processing machines to the parts or equipment. This gave rise to the need for on-site machining machine tools.

[0003] Because some large components or equipment are difficult to disassemble and move after installation, they cannot be machined on existing fixed lathes, especially the local machining of extra-long, extra-wide, extra-high and extra-heavy large components, such as the machining of the end shaft of the wire rope drum of a large crane and the end shaft of a large cable reel of marine engineering products.

[0004] In the published document CN201710945271 - a turning-milling compound machine tool for teaching, the lathe needs to move on the X-axis and the Y-axis, that is, a device needs to be set on the X-axis and the Y-axis respectively for the movement of the milling head, which takes up a lot of space. When encountering large parts that are inconvenient to transport, a crane needs to be used, which is very troublesome. Summary of the Invention

[0005] In order to solve the above problems, the present invention discloses a portable on-site processing lathe, which improves portability and integration.

[0006] The technical solution of the present invention is: a portable on-site processing lathe, including a driving structure, a rotating structure and a processing structure, the driving structure includes a spindle servo motor and a speed regulating motor, the rotating structure includes a rotating body, and the processing structure includes a tool holder. One end of the rotating body is connected to the tool holder through a large gear engaging a small gear, a supporting fixed shaft passes through the rotating body, a trapezoidal lead screw is provided at the bottom of the supporting fixed shaft, the trapezoidal lead screw is connected to a connecting support through a guide nut, and the end of the supporting fixed shaft is mounted with a workpiece to be processed through a flange.

[0007] Furthermore, the interior of the rotating body is connected to the supporting fixed shaft through an inner sleeve, the rotating body and the inner sleeve are connected through a main shaft bearing, and a connecting support is fixedly connected to the side of the inner sleeve close to the speed regulating motor.

[0008] Furthermore, a guide nut is provided at the bottom of the connecting support, the guide nut passes through the outside of the trapezoidal lead screw, and the guide nut is fixedly connected through the connecting support and the inner sliding sleeve.

[0009] Furthermore, the trapezoidal lead screw is located inside the inner sleeve, one end of the trapezoidal lead screw is driven by a speed regulating motor and a right-angle reducer, and the other end is fixed on the supporting fixed shaft, and the trapezoidal lead screw is parallel to the supporting fixed shaft.

[0010] Furthermore, a small gear is provided above the large gear on the upper part of the connecting support, the small gear is meshed with the large gear, and the small gear is driven by the main shaft servo motor through the reducer.

[0011] Furthermore, a tool handle is connected to the upper part of the rotating body through an adjusting seat, and a turning tool is provided at the end of the tool handle, and the turning tool is located above the workpiece to be processed.

[0012] Furthermore, one end of the rotating body away from the connecting support is fixedly connected to an inner end cover, the inner end cover is connected to an outer end cover via a skeleton oil seal, and a balancing weight is fixedly connected between the outer end cover and the large gear.

[0013] Furthermore, the side of the supporting fixed shaft close to the large gear is connected to a speed regulating motor through a shaft end support, a reducer is provided between the speed regulating motor and the shaft end support, and the other side of the supporting fixed shaft is installed with a locating pin for mounting the workpiece to be processed.

[0014] The benefits of the present invention are as follows: 1. The present invention uses a large gear provided on the rotating body and a small gear meshing with the large gear. The small gear rotates through the drive of the main shaft servo motor, and the rotation of the small gear drives the rotation of the large gear. The rotating body and the large gear are fixedly connected, and the rotating body is randomly driven by the large gear to rotate, thereby rotating the rotating body connected to it, thereby driving the turning tool to rotate. The turning tool does not need to be directly located on the axially movable supporting fixed shaft through another device, which can effectively improve the cutting speed.

[0015] 2. The present invention provides a trapezoidal lead screw. When the trapezoidal lead screw is driven by a speed regulating motor, the guide nut on the trapezoidal lead screw drives the inner sleeve to move axially, which facilitates the turning tool to process the workpiece at different axial positions, making the workpiece more completely processed.

[0016] 3. The present invention combines a rotating body, an inner sleeve and a trapezoidal screw to enable the turning tool to move in the axial and circumferential directions, and the turning tool can cut the workpiece in both the axial and circumferential directions. The axial and circumferential movements are integrated into one device, effectively reducing the working space of the lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the cross-sectional view of the present invention;

[0019] Figure 3It is a schematic structural diagram of a cross-sectional view of the present invention;

[0020] Among them: 1. Spindle servo motor; 2. Reducer; 3. Connecting support; 4. Pinion; 5. Rotating body; 6. Adjustment seat; 7. Tool holder; 8. Turning tool; 9. Workpiece to be processed; 10. Support fixed shaft; 11. Trapezoidal screw; 12. Balancing weight; 13. Large gear; 14. Inner sleeve; 15. Guide nut; 16. Shaft end support; 17. Right-angle reducer; 18. Speed ​​regulating motor; 19. Locating pin; 20. Inner end cover; 21. Outer end cover, P1-spindle bearing; P2-skeleton oil seal. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a limitation on the scope of protection of the present invention.

[0022] like Figure 1 As shown, a portable on-site processing lathe includes a driving structure, a rotating structure and a processing structure. The driving structure includes a spindle servo motor 1 and a speed regulating motor 18. The rotating structure includes a rotating body 5. The processing structure includes a tool holder 7. One end of the rotating body 5 is connected to the tool holder 7 through a large gear 13 engaging a small gear 4. A supporting fixed shaft 10 passes through the rotating body 5. A trapezoidal screw rod 11 is provided at the bottom of the supporting fixed shaft 10. The trapezoidal screw rod 11 is connected to a connecting support 3 through a guide nut 15. The end of the supporting fixed shaft 10 is mounted with a workpiece 9 to be processed through a flange. The rotating body 5 is moved axially by the rotation of the trapezoidal screw rod 11. The spindle servo motor 1 causes the rotating body 5 to rotate, so that the workpiece 9 to be processed is cut by the turning tool 8.

[0023] The interior of the rotating body 5 is connected to the supporting fixed shaft 10 through the inner sleeve 14, and the rotating body 5 and the inner sleeve 14 are connected through the spindle bearing P1. The side of the inner sleeve 14 close to the speed regulating motor 18 is fixedly connected to the connecting support 3. The rotating body 5 rotates on the supporting fixed shaft 10, so that the turning tool 8 rotates around the center to cut the workpiece 9.

[0024] A guide nut 15 is provided at the bottom of the connecting support 3. The guide nut 15 passes through the outside of the trapezoidal screw 11. The guide nut 15 is fixedly connected to the connecting support 3 and the inner sleeve 14. The guide nut 15 moves on the trapezoidal screw 11, thereby driving the axial displacement of the rotating body 5 for easy cutting.

[0025] The trapezoidal lead screw 11 is located inside the inner sleeve 14. One end of the trapezoidal lead screw 11 is driven by the speed regulating motor 18 and the right-angle reducer 17, and the other end is fixed on the supporting fixed shaft 10. The trapezoidal lead screw 11 is parallel to the supporting fixed shaft 10. The trapezoidal lead screw 11 is driven by the speed regulating motor 18 and rotates, thereby driving the guide nut 15 to slide on the trapezoidal lead screw 11.

[0026] A small gear 4 is provided above the large gear 13 on the upper part of the connecting support 3. The small gear 4 is meshed with the large gear 13. The small gear 4 is driven by the spindle servo motor 1 through the reducer 2. Driven by the spindle servo motor 1, the small gear 4 and the large gear 13 are meshed and rotated, thereby driving the rotating 5 to rotate on the supporting fixed shaft 10 through the inner sleeve 14, thereby driving the turning tool 8 to rotate.

[0027] A tool holder 7 is clamped on the upper part of the rotating body 5 through an adjusting seat 6. The adjusting seat 6 can be replaced according to different processing ranges to adjust the distance from the tool holder 7 to the machining center and replace different types of turning tools 8. Chamfering, arc, grooving, etc. can be processed. A turning tool 8 is provided at the end of the tool holder 7. The turning tool 8 is located above the workpiece 9 to be processed. The turning tool 8 follows the tool holder 7 as the rotating body 5 rotates, so that the turning tool 8 rotates around the workpiece 9 to be processed.

[0028] The end of the rotating body 5 away from the connecting support 3 is fixedly connected to the inner end cover 20, and the inner end cover 20 is connected to the outer end cover 21 through the skeleton oil seal P2. A balancing weight 12 is fixedly connected between the outer end cover 21 and the large gear 13. The balancing weight 12 plays a balancing role, so that the equipment runs in a balanced manner and the processing accuracy is improved.

[0029] The side of the supporting fixed shaft 10 close to the large gear 13 is connected to the speed regulating motor 18 through the shaft end support 16, and a reducer 2 is provided between the speed regulating motor 18 and the shaft end support 16. The other side of the supporting fixed shaft 10 is installed with the workpiece 9 through the positioning pin 19.

[0030] Working principle: The workpiece 9 to be processed is installed to one end of the supporting fixed shaft 10 through the positioning 19, and the speed regulating motor 18 and the spindle servo motor 1 are started at the same time. The speed regulating motor 18 drives the trapezoidal screw 11 to rotate, and the guide nut 15 sleeved on the trapezoidal screw 11 slides on the trapezoidal screw 11, and the connecting support 3 connected to the guide nut 15 drives the inner sleeve 14 connected to it to slide axially, that is, the axial position relationship between the workpiece 9 to be processed and the turning tool 8 can be changed. At the same time, the spindle servo motor 1 drives the small gear 4 to rotate, and the small gear 4 drives the large gear 13 to rotate, and the large gear 13 drives the rotating body 5 fixed to it to rotate around the inner sleeve 14 through the spindle bearing P1, and the tool holder 7 is fixed on the rotating body 5, that is, the turning tool 8 located at one end of the tool holder 7 also rotates, and the turning tool 8 rotates and cuts around the workpiece 9, thereby realizing automatic cutting of the outer circle of the shaft.

Claims

1. A portable on-site processing lathe, comprising a drive structure, a rotating structure, and a processing structure, wherein the drive structure comprises a spindle servo motor and a speed regulating motor, the rotating structure comprises a rotating body, and the processing structure comprises a tool handle, characterized in that: One end of the rotating body is connected to a tool handle through a large gear meshing with a small gear. A supporting and fixing shaft passes through the rotating body. A trapezoidal screw is provided at the bottom of the supporting and fixing shaft. The trapezoidal screw is connected to a connecting support through a guide nut. The end of the supporting and fixing shaft is mounted on the workpiece to be processed through a flange.

2. The portable on-site processing lathe according to claim 1, characterized in that: The interior of the rotating body is connected to the supporting fixed shaft through an inner sleeve, the rotating body and the inner sleeve are connected through a main shaft bearing, and a connecting support is fixedly connected to a side of the inner sleeve close to the speed regulating motor.

3. The portable on-site processing lathe according to claim 2, characterized in that: A guide nut is provided at the bottom of the connecting support. The guide nut passes through the outside of the trapezoidal lead screw. The guide nut is fixedly connected to the connecting support and the inner sliding sleeve.

4. The portable on-site processing lathe according to claim 1, characterized in that: The trapezoidal lead screw is located inside the inner sleeve, one end of the trapezoidal lead screw is driven by a speed regulating motor and a right-angle reducer, and the other end is fixed on a supporting fixed shaft, and the trapezoidal lead screw is parallel to the supporting fixed shaft.

5. The portable on-site processing lathe according to claim 1, characterized in that: A small gear is provided above the large gear on the upper part of the connecting support, the small gear is meshed with the large gear, and the small gear is driven by a main shaft servo motor through a speed reducer.

6. The portable on-site processing lathe according to claim 1, characterized in that: A tool handle is connected to the upper part of the rotating body through an adjusting seat. A turning tool is provided at the end of the tool handle. The turning tool is located above the workpiece to be processed.

7. The portable on-site processing lathe according to claim 1, characterized in that: One end of the rotating body away from the connecting support is fixedly connected to an inner end cover, the inner end cover is connected to an outer end cover via a skeleton oil seal, and a balancing weight is fixedly connected between the outer end cover and the large gear.

8. The portable on-site processing lathe according to claim 1, characterized in that: The side of the supporting fixed shaft close to the large gear is connected to a speed regulating motor through a shaft end support, a reducer is provided between the speed regulating motor and the shaft end support, and the other side of the supporting fixed shaft is installed with a locating pin for mounting the workpiece to be processed.

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