阅读说明：本技术 一种航空铸造件斜面上不连续细长孔加工工艺 (Machining process for discontinuous elongated holes in inclined plane of aviation casting part ) 是由 陈忠桥 范兵 蒋小春 张奉渝 刘小林 邓永杰 包文弟 敬承涛 于 2020-12-22 设计创作，主要内容包括：本发明公开一种航空铸造件斜面上不连续细长孔加工工艺,包括以下步骤：步骤10、装夹并检查装夹是否稳定；步骤20、使用数控车床车外形及内形孔至要求的尺寸,同时加工φ45.7+0.05mm及A端面；步骤30、使用卧式加工中心加工A端面及孔φ45.7+0.05mm至要求的尺寸；步骤40、使用卧式加工中心加工B端面至要求的尺寸,然后对B端面的孔进行粗铣；步骤50、使用卧式加工中心镗孔φ19+0.025mm、φ12.6+0.1mm及φ8-0.015mm上端；步骤60、使用卧式加工中心将φ8-0.015mm键槽下端用铣刀铰孔至Φ7.95mm；步骤70、使用卧式加工中心将φ8-0.015mm键槽下端用铣刀铰孔至φ8-0.015mm下端,加工过程中保证上下两端同轴。本发明加工精度高、产品合格率高。(The invention discloses a machining process of discontinuous elongated holes on an inclined plane of an aviation casting, which comprises the following steps: step 10, clamping and checking whether the clamping is stable; step 20, turning the outer shape and the inner shape hole to the required size by using a numerical control lathe, and simultaneously processing the end surfaces with the diameter of 45.7+0.05mm and A; step 30, processing the end face A and the hole phi of 45.7+0.05mm to the required size by using a horizontal processing center; step 40, processing the end face B to a required size by using a horizontal processing center, and then roughly milling a hole in the end face B; step 50, boring holes with the diameter of 19 mm plus 0.025mm, the diameter of 12.6 plus 0.1mm and the upper end with the diameter of 8-0.015mm by using a horizontal machining center; step 60, reaming the lower end of the key groove with phi 8-0.015mm to phi 7.95mm by using a milling cutter by using a horizontal machining center; and step 70, reaming the lower end of the key groove with the diameter of 8-0.015mm to the lower end with the diameter of 8-0.015mm by using a milling cutter by using a horizontal machining center, and ensuring that the upper end and the lower end are coaxial in the machining process. The invention has high processing precision and high product qualification rate.)

1. A machining process for discontinuous elongated holes in an inclined plane of an aviation casting part is characterized by comprising the following steps:

step 10, clamping and checking whether the clamping is stable;

step 20, turning the outer shape and the inner shape hole to the required size by using a numerical control lathe, and simultaneously processing the end surfaces with the diameter of 45.7+0.05mm and A;

step 30, processing the end face A and the hole phi of 45.7+0.05mm to the required size by using a horizontal processing center;

step 40, processing the end face B to a required size by using a horizontal processing center, and then roughly milling a hole in the end face B;

step 50, boring holes with the diameter of 19 mm plus 0.025mm, the diameter of 12.6 plus 0.1mm and the upper end with the diameter of 8-0.015mm by using a horizontal machining center;

step 60, reaming the lower end of the key groove with phi 8-0.015mm to phi 7.95mm by using a milling cutter by using a horizontal machining center;

and step 70, reaming the lower end of the key groove with the diameter of 8-0.015mm to the lower end with the diameter of 8-0.015mm by using a milling cutter by using a horizontal machining center, and ensuring that the upper end and the lower end are coaxial in the machining process.

2. The machining process of the discontinuous elongated holes in the inclined plane of the aerocast part as claimed in claim 1, wherein the machining process comprises the following steps: in step 20, the residual diameter of the A end face is 0.1mm when the A end face is machined to be 45.7+0.05 mm.

3. The machining process of the discontinuous elongated holes in the inclined plane of the aerocasting part as claimed in claim 1 or 2, wherein the machining process comprises the following steps: in step 60, the processing rotating speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

4. The machining process of the discontinuous elongated holes in the inclined plane of the aerocasting part as claimed in claim 1 or 2, wherein the machining process comprises the following steps: in step 70, the processing speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

Technical Field

The invention belongs to the field of positioning devices, and particularly relates to a machining process for discontinuous elongated holes in an inclined plane of an aviation casting.

Background

The processing of discontinuous elongated holes on the inclined plane of the aviation casting is a difficult point in the processing process of the aviation casting. At present, the conventional processing process is generally finished by adopting a one-step processing and forming mode. However, in such a machining method, the tool length during machining results in poor tool strength and tool breakage, and the intermittent cutting of the bevel during machining results in a back-off. Therefore, the problems of low processing precision and low product yield are caused.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a machining process for discontinuous elongated holes on the inclined plane of an aviation casting part, and the machining process adopts a multi-time machining mode of segmentation, so that the problems of poor cutter strength and cutter damage caused by cutter length in the machining process and cutter back-off caused by discontinuous cutting of the inclined plane in the machining process can be effectively solved, and the machining precision is high and the product percent of pass is high.

The technical scheme adopted by the invention is as follows: a machining process for discontinuous elongated holes in an inclined plane of an aviation casting part comprises the following steps:

step 10, clamping and checking whether the clamping is stable;

step 20, turning the outer shape and the inner shape hole to the required size by using a numerical control lathe, and simultaneously processing the end surfaces with the diameter of 45.7+0.05mm and A;

step 30, processing the end face A and the hole phi of 45.7+0.05mm to the required size by using a horizontal processing center;

step 40, processing the end face B to a required size by using a horizontal processing center, and then roughly milling a hole in the end face B;

step 50, boring holes with the diameter of 19 mm plus 0.025mm, the diameter of 12.6 plus 0.1mm and the upper end with the diameter of 8-0.015mm by using a horizontal machining center;

step 60, reaming the lower end of the key groove with phi 8-0.015mm to phi 7.95mm by using a milling cutter by using a horizontal machining center;

and step 70, reaming the lower end of the key groove with the diameter of 8-0.015mm to the lower end with the diameter of 8-0.015mm by using a milling cutter by using a horizontal machining center, and ensuring that the upper end and the lower end are coaxial in the machining process.

In one embodiment, in step 20, the machining diameter is 45.7+0.05mm and the A end face allowance is 0.1 mm.

In one embodiment, in the step 60, the processing rotating speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

In one embodiment, in step 70, the processing speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

The invention has the beneficial effects that:

1. a, B, the two sides are finished in the same process, which can effectively ensure the position sizes of the intersection point of the B surface and the B surface hole center and the intersection point of the A surface and the reference D hole center are phi 25.7+0.05mm and phi 45.7+0.05 mm;

2. the phi 8-0.015mm hole is processed in a segmented and multi-time mode, so that the problems of poor cutter strength caused by cutter length in the processing process and cutter damage and cutter back-off caused by interrupted cutting of an inclined surface in the processing process can be effectively solved, and the processing precision and the product percent of pass are high.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Detailed Description

The invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1, the machining process of discontinuous elongated holes on the inclined plane of an aviation casting piece comprises the following steps:

step 10, clamping and checking whether the clamping is stable;

step 20, turning the outer shape and the inner shape hole to the required size by using a numerical control lathe, and simultaneously processing the end surfaces with the diameter of 45.7+0.05mm and A;

step 30, processing the end face A and the hole phi of 45.7+0.05mm to the required size by using a horizontal processing center;

step 40, processing the end face B to a required size by using a horizontal processing center, and then roughly milling a hole in the end face B;

step 50, boring holes with the diameter of 19 mm plus 0.025mm, the diameter of 12.6 plus 0.1mm and the upper end with the diameter of 8-0.015mm by using a horizontal machining center;

step 60, reaming the lower end of the key groove with phi 8-0.015mm to phi 7.95mm by using a milling cutter by using a horizontal machining center;

and step 70, reaming the lower end of the key groove with the diameter of 8-0.015mm to the lower end with the diameter of 8-0.015mm by using a milling cutter by using a horizontal machining center, and ensuring that the upper end and the lower end are coaxial in the machining process.

In this embodiment, in step 20, the retention for machining the end face A and the end face B are 45.7+0.05 mm.

In the embodiment, in the step 60, the processing rotating speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

In this embodiment, in step 70, the processing rotation speed is 20 r/min to 30r/min, and the feeding rate is 3mm/min to 6 mm/min.

According to the invention, A, B two surfaces are finished in the same process, so that the position sizes of the intersection point of the B surface and the B surface hole center and the intersection point of the A surface and the reference D hole center are ensured to be phi 25.7+0.05mm and phi 45.7+0.05 mm; the phi 8-0.015mm hole is processed in a segmented and multi-time mode, so that the problems of poor cutter strength caused by cutter length in the processing process and cutter damage and cutter back-off caused by interrupted cutting of an inclined surface in the processing process can be effectively solved, and the processing precision and the product percent of pass are high.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.