阅读说明：本技术 航空产品细长轴辅助加工装置 (Auxiliary machining device for slender shaft of aviation product ) 是由 贾鹏宇 左殿阁 吴建国 梁宇 任燕 石兆琦 刘傲东 崔晓玉 李永利 朱世明 于 2020-04-03 设计创作，主要内容包括：本发明属于航空产品领域,具体涉及到一种航空产品细长轴辅助加工装置。包括自制螺栓、支架、支撑滚轮；自制螺栓设有螺纹A和螺纹B,螺纹A与支架连接,螺纹B与支撑滚轮上的内腔外侧螺纹孔相匹配,螺纹A和螺纹B中间设有一段光轴,光轴直径小于螺纹B直径；所述的支撑滚轮一端设有与自制螺栓的螺纹B相匹配的螺纹孔,螺纹孔的底部设有内腔,且内腔直径大于自制螺栓的螺纹B直径；另一端设有两个对称分布的滚轮。对轴表面基本无损伤,具有良好的加工效果。且工装简单易用,调整方便,提升加工效率,在细长轴加工、轴滚花等工作中都有极佳表现。(The invention belongs to the field of aviation products, and particularly relates to an auxiliary machining device for slender shafts of aviation products. Comprises a self-made bolt, a bracket and a supporting roller; the self-made bolt is provided with a thread A and a thread B, the thread A is connected with the support, the thread B is matched with a threaded hole on the outer side of the inner cavity on the supporting roller, a section of optical axis is arranged between the thread A and the thread B, and the diameter of the optical axis is smaller than that of the thread B; one end of the support roller is provided with a threaded hole matched with the thread B of the self-made bolt, the bottom of the threaded hole is provided with an inner cavity, and the diameter of the inner cavity is larger than that of the thread B of the self-made bolt; the other end is provided with two rollers which are symmetrically distributed. The shaft surface is basically not damaged, and the processing effect is good. And the tool is simple and easy to use, is convenient to adjust, improves the processing efficiency, and has excellent performance in the working of slender shaft processing, shaft knurling and the like.)

1. Auxiliary processingequipment of aviation product slender axles, its characterized in that: comprises a self-made bolt, a bracket and a supporting roller; the self-made bolt is provided with a thread A and a thread B, the thread A is connected with the support, the thread B is matched with a threaded hole on the outer side of the inner cavity on the supporting roller, a section of optical axis is arranged between the thread A and the thread B, and the diameter of the optical axis is smaller than that of the thread B; one end of the support roller is provided with a threaded hole matched with the thread B of the self-made bolt, the bottom of the threaded hole is provided with an inner cavity, and the diameter of the inner cavity is larger than that of the thread B of the self-made bolt; the other end is provided with two rollers which are symmetrically distributed.

2. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the support is provided with a hole for injecting cooling liquid, a connecting fixing hole connected with a lathe and a position adjusting groove.

3. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the roller material is changed according to different processing materials, and the roller made of ceramic or rubber materials is used for processing magnetic materials.

4. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the spacing size of the supporting rollers is adjustable.

5. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the homemade bolt can be adjusted laterally.

6. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the shape and the connecting position of the bracket can be changed along with the form of a lathe.

7. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: the self-made bolt tightening end is provided with knurling type anti-skidding lines.

8. The aero-product elongated shaft auxiliary processing device according to claim 1, wherein: and a U-shaped groove with a spring inside is arranged at the joint of the upper roller of the supporting roller and is used for being connected with the roller to realize free extension of the roller.

Technical Field

The invention belongs to the field of aviation products, and particularly relates to an auxiliary machining device for slender shafts of aviation products.

Background

The machining of the slender shaft (the length-diameter ratio is usually 20-25) of an aviation product is always a difficult point in machining, the material value is high, the machining difficulty is high, the machining main mode is that the slender shaft is machined by a common lathe, the slender shaft is difficult to control due to high jumping and is easy to deform, auxiliary tools of the common lathe are lost, the jumping quantity of the slender shaft is easy to be overlarge and unqualified, and a simple machining method and an auxiliary tool are lacked in the machining process.

Disclosure of Invention

Aiming at the problem of larger jumping quantity of a slender shaft machined on a common lathe, the design provides a method for improving the machining quality of the slender shaft by adopting an auxiliary tool, a self-made support is fixed on a lathe tool rest, a free auxiliary supporting roller (hereinafter referred to as an auxiliary wheel) is connected on the support through a self-made bolt with a clearance groove, during machining, the distance between the auxiliary wheel and the surface of a workpiece to be machined is required to be roughly adjusted, so that the auxiliary wheel is attached to the non-machined surface of the slender shaft, the auxiliary wheel can freely move after being matched with the self-made bolt, namely, the auxiliary wheel can play a limiting role and has abundant moving space and non-fixed matching, a floating structure is formed, the auxiliary wheel can automatically align along with the rotation of the workpiece, meanwhile, the roller on the auxiliary wheel can simultaneously rotate along with the rotation of the slender shaft, the effect of 'soft assistance' is really played, and cooling liquid is sprayed from an oil, and (5) auxiliary processing. Therefore, the surface quality of the part can be maximally protected on the premise of reducing the part bounce.

Technical scheme

The auxiliary machining device for the slender shaft of the aviation product comprises a self-made bolt, a bracket and a supporting roller; the self-control bolt is equipped with screw thread A and screw thread B, and screw thread A and leg joint, screw thread B and the inner chamber outside screw hole phase-match on the supporting roller, are equipped with one section optical axis in the middle of two sections screw thread A and screw thread B, and the optical axis diameter is less than screw thread B diameter. One end of the support roller is provided with a threaded hole matched with the thread B of the self-made bolt, the bottom of the threaded hole is provided with an inner cavity, and the diameter of the inner cavity is larger than that of the thread B of the self-made bolt; the other end is provided with two rollers which are symmetrically distributed.

Technical effects

When the slender shaft with the length-diameter ratio of 20-35 is machined, the invention obviously reduces the jumping amount of the shaft in rotation and improves the product quality, basically has no damage to the surface of the shaft and has good machining effect. And the tool is simple and easy to use, is convenient to adjust, improves the processing efficiency, and has excellent performance in the working of slender shaft processing, shaft knurling and the like.

Drawings

FIG. 1 is a general assembly drawing of an auxiliary device

FIG. 2 is a view showing the structure of a supporting roller

FIG. 3 is a position diagram of a blank slot of a self-made bolt

FIG. 4 is a schematic view of a stent

Detailed Description

The auxiliary support roller is used in the processing process of the slender shaft with the maximum length-diameter ratio of 24, the using effect is excellent, the free auxiliary support roller can reach an ideal state, the auxiliary support roller is flexibly attached along with the rotation of a workpiece, the processing quality of a product is guaranteed, and the processing qualified rate of the product is more than 95%. The auxiliary processing method for the slender shaft of the common lathe is proved to be reasonable and reliable. And the yield of direct processing is about 60%. By means of the auxiliary device, the slender shaft machining yield of the aviation product is improved, and machining quality is improved. The problem of the slender axles of aviation products great runout in the course of working is solved.

The auxiliary machining device for the slender shaft of the aviation product comprises a self-made bolt, a bracket and a supporting roller; the self-control bolt is equipped with screw thread A and screw thread B, and screw thread A and leg joint, screw thread B and the inner chamber outside screw hole phase-match on the supporting roller, are equipped with one section optical axis in the middle of two sections screw thread A and screw thread B, and the optical axis diameter is less than screw thread B diameter. One end of the support roller is provided with a threaded hole matched with the thread B of the self-made bolt, the bottom of the threaded hole is provided with an inner cavity, and the diameter of the inner cavity is larger than that of the thread B of the self-made bolt; the other end is provided with two rollers which are symmetrically distributed.

The support is provided with a hole for injecting cooling liquid, a connecting fixing hole connected with a lathe and a position adjusting groove.

The roller material can be changed according to different processing materials, for example, ceramic or rubber rollers can be used for processing magnetic materials.

The spacing size of the supporting rollers can be adjusted to adapt to different workpiece sizes.

The self-control bolt can be transversely adjusted to adapt to different machining distance requirements.

The shape and the connecting position of the bracket can be changed along with the form of a lathe so as to adapt to different requirements.

The self-made bolt tightening end is provided with knurling type anti-skidding lines.

And a U-shaped groove with a spring inside is arranged at the joint of the upper roller of the supporting roller and is used for being connected with the roller to realize free extension of the roller.

Fig. 1 can see from the assembly drawing that free auxiliary stay gyro wheel and self-control bolt cooperation back of taking the clearance groove play limiting displacement promptly and can have abundant activity space again, guarantee that it can be nimble with work piece surface contact, guarantee complex reliability, simultaneously, the gyro wheel rotates along with the work piece, guarantees part surface quality.

Fig. 2 shows a specific structure of the supporting roller, and the auxiliary frame is threaded only at the end opening, and has a slightly larger inner diameter without threads.

Fig. 3 shows the positions of the cutter grooves of the self-made bolts, and the thread length of the front end is shorter than the length of the large diameter inside the supporting roller.

Fig. 4 shows the attachment points of the bracket, coolant ports, and the location of attachment to the bolts and lathe carriage.