Bridge type boring and reaming tool
By designing a bridge-type boring and reaming fixture, the problem of reaming error caused by boring bar wobbling was solved, achieving high-precision hole machining and enhancing stability and production efficiency.
Patent Information
- Application Number
- CN202422773484.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The boring bar is prone to wobbling during the reaming process, which can cause problems with the roundness, cylindricity, and perpendicularity of the reamed hole.
Design a bridge-type boring and reaming fixture, including a fixed frame, an ant-shaped boring bar, and a boring bar. The boring bar fixed frame is equipped with a bushing and an oil injection device to ensure that the boring bar is fully lubricated during operation, reduce friction, and enhance stability.
By adding a boring bar holder and a lubrication device, boring bar wobbling is reduced, errors in the reaming process are avoided, and hole accuracy and production efficiency are improved.
Smart Images
Figure CN223519130U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to boring and reaming technology field especially relates to a kind of bridge boring and reaming tool for boring and reaming hole on shaft flange. BACKGROUND
[0002] The connecting hole on the flange of the ship shaft and similar shaft (flange at both ends, taper connection in the middle) requires high accuracy, bright roughness, cylindricality, roundness not more than 0.02mm, perpendicularity to the end face not more than 0.03mm, roughness not more than 1.6μm, and the hole is distributed in the center of the circle with a tolerance of not more than 0.1mm, and the interference amount of the matching size is 0.005-0.015mm. To ensure the quality of the product, a boring and reaming tool suitable for reaming the hole of this type of flange needs to be manufactured.
[0003] Since the middle section of the shaft is a tapered cylinder connection, the fixed frame is clamped on the outer circle of the small flange, a 0.5mm copper sheet is used to lay and pad the contact between the inner hole of the fixed frame and the outer surface of the workpiece during connection, then the ant boring and boring bar are installed, the appropriate pad plate and pad block are selected according to the center of the workpiece, to ensure that the center distance of the workpiece and the center distance of the fixed frame are consistent, and the boring bar is adjusted according to the position of the reaming hole to make the outer diameter of the boring bar and the inner hole of the workpiece coaxial as much as possible, as shown in Figure 1 After all the adjustments and positioning are completed, the fixing bolts are tightened, and the reaming hole of the other side flange is reamed. During the reaming process, it is found that the boring bar is prone to shaking due to its excessive length, which causes the reaming hole to exceed the tolerance in roundness, cylindricality and perpendicularity. SUMMARY
[0004] The utility model aims at solving the above technical problem, and provides a bridge boring and reaming tool that can effectively fix the boring bar and solve the reaming deviation problem caused by shaking of the boring bar during the reaming process.
[0005] In order to achieve the above technical purpose and meet the above technical requirements, the utility model adopts the following technical scheme: a bridge boring and reaming tool, comprising a fixed frame, the fixed frame is arranged on the outer circle of the small flange, an ant boring is arranged on the fixed frame, a boring bar is arranged at the front end of the ant boring, the front end of the boring bar passes through the reaming hole and is arranged on the boring bar fixing frame, a shaft sleeve is arranged at the connection between the boring bar fixing frame and the boring bar, an oil cup is arranged above the boring bar fixing frame, an oil injection hole is arranged above the shaft sleeve and the boring bar fixing frame to ensure that the boring bar is fully lubricated during work.
[0006] Preferably, the boring bar fixing frame is arranged outside the reaming hole.
[0007] Preferably, the copper shaft sleeve inner hole and the boring bar outer circle are gap fitted.
[0008] Preferably, the bushing is a copper bushing.
[0009] Compared with traditional structures, the advantages of this utility model are: the structural design is reasonable and enhances the stability of the structure; the addition of a boring bar fixing bracket at the front end of the boring bar reduces the shaking of the boring bar during operation and enhances stability; at the same time, the addition of a copper bushing and oil lubrication device further reduces the friction generated between the boring bar fixing bracket and the boring bar during rotation, thereby avoiding problems such as out-of-tolerance roundness, cylindricity, and perpendicularity. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the existing boring and reaming hole structure;
[0011] Figure 2 This is a schematic diagram of the structure of this utility model;
[0012] In the diagram: 1. Ant boring bar, 2. Fixing bracket, 3. Boring bar, 4. Oil cup, 5. Bushing, 6. Boring bar fixing bracket, 7. Shaft connected by a cone. Detailed Implementation
[0013] The present invention will be further described below.
[0014] See attached document Figure 2 A bridge-type boring and reaming fixture includes a fixed frame 2, which is mounted on the outer circle of a small flange. An ant-shaped boring bar 1 is mounted on the fixed frame 2, and a boring bar 3 is mounted at the front end of the ant-shaped boring bar 1. The front end of the boring bar 1 passes through a reaming hole and is mounted on a boring bar fixing frame 6. A bushing 5 is mounted at the connection between the boring bar fixing frame 6 and the boring bar 1. An oil cup 4 is mounted above the boring bar fixing frame 6. Oil filling holes are provided directly above both the bushing 5 and the boring bar fixing frame 6 to ensure sufficient lubrication between the boring bar 1 and the bushing 5 during operation.
[0015] In this preferred embodiment, the boring bar fixing bracket 6 is disposed on the outside of the reamed hole.
[0016] In this preferred embodiment, the inner hole of the bushing 5 is clearance-fitted with the outer circle of the boring bar 1.
[0017] In this preferred embodiment, the bushing 5 is a copper bushing.
[0018] In the embodiment, the boring and reaming tool is improved, a boring bar fixing frame 6 is added at a proper position outside the reaming hole, a 0.5mm copper sheet is used to pad the inner hole of the fixing frame which is in contact with the outer surface of the workpiece, a copper shaft sleeve 5 is added to the inner hole of the support of the boring bar fixing frame 6, the inner hole of the copper shaft sleeve 5 is in small gap cooperation with the outer diameter of the boring bar 3, an oil injection hole is added above the copper shaft sleeve 5 and the boring bar fixing frame 6, an oil cup 4 is installed, the lubricating device can ensure that the boring bar 3 is fully lubricated with the shaft sleeve 5 during the working process, thereby reducing the friction and wear and improving the production efficiency, meanwhile, the lubricating liquid also has the functions of cooling and heat dissipation, the positions of the boring bar fixing frame 6, the boring bar 3 and the fixing frame 2 are adjusted, the center of the boring bar 3, the center of the boring bar fixing frame 6 and the center of the workpiece are coaxial as far as possible, after all the components are adjusted in place, all the connecting bolts are tightened, the oil cup 4 is filled with lubricating oil, and then the boring and reaming work is carried out. The bridge type boring and reaming tool enhances the stability of the structure, thereby solving the problem that the roundness, cylindricity and perpendicularity error is large due to the boring bar deviation during the boring and reaming process, and plays a great role in the boring and reaming work of the flange connecting hole of the shaft.
[0019] The above embodiment of the utility model is only used for clearly illustrating the examples of the utility model, but is not used for limiting the protection scope of the utility model, and all equivalent technical schemes also belong to the scope of the utility model, and the patent protection scope of the utility model should be limited by various claims.
Claims
1. A bridge type boring and reaming tooling, comprising a fixing frame (2) arranged on a small flange outer circle, an ant boring (1) is arranged on the fixing frame (2), characterized in that: The front end of the ant boring machine (1) is provided with a boring bar (3), the front end of the boring bar (3) is arranged on the boring bar fixing frame (6) through the hinge hole, the connecting part of the boring bar fixing frame (6) and the boring bar (3) is provided with a shaft sleeve (5), the boring bar fixing frame (6) is provided with an oil cup (4) above, the shaft sleeve (5) and the boring bar fixing frame (6) are provided with oil injection holes above, so that the boring bar (3) is fully lubricated with the shaft sleeve (5) during working.
2. The bridge boring and reaming fixture of claim 1, wherein: The boring bar fixing frame (6) is arranged outside the hinge hole.
3. The bridge boring and reaming fixture of claim 1, wherein: The inner hole of the shaft sleeve (5) is in clearance fit with the outer circle of the boring bar (3).
4. The bridge boring and reaming fixture of claim 1, wherein: The shaft sleeve (5) is a copper shaft sleeve.