阅读说明：本技术 一种具有定位孔的超长梁加工方法 (Method for processing ultra-long beam with positioning hole ) 是由 马磊 刘洋 于 2021-07-12 设计创作，主要内容包括：本发明涉及一种具有定位孔的超长梁加工方法,其步骤包括在真空吸盘上进行仿形准备；2)铣工件外形；3)开启真空吸盘,使工件处于真空吸附状态；4)对定位孔按照加工要求进行铣削；5)步骤4)后铣掉耳片；6)关闭真空吸盘,取下加工后工件。通过在真空吸盘上设有圆柱凸台,圆柱凸台位置与工件待加工位置定位孔对应,圆柱凸台外圆周套装有密封圈,在真空吸盘吸附工件加工定位孔时,既保证了工件加工过程中的稳定性和精度,也避免孔加工过大导致漏气,真空吸盘失效的问题。(The invention relates to a method for processing an ultra-long beam with positioning holes, which comprises the steps of carrying out profiling preparation on a vacuum chuck; 2) milling the appearance of the workpiece; 3) starting a vacuum chuck to enable the workpiece to be in a vacuum adsorption state; 4) milling the positioning hole according to the processing requirement; 5) milling lugs after the step 4); 6) and closing the vacuum chuck, and taking down the processed workpiece. Through be equipped with the cylinder boss on vacuum chuck, the processing position locating hole correspondence is treated with the work piece in cylinder boss position, and the outer circumference cover of cylinder boss is equipped with the sealing washer, when vacuum chuck adsorbs work piece processing locating hole, has both guaranteed the stability and the precision in the work piece course of working, also avoids the too big gas leakage that leads to of spot facing work, the problem that vacuum chuck became invalid.)

1. A processing method of an ultra-long beam with positioning holes comprises the following steps:

1) carrying out profiling preparation on a vacuum chuck, and setting a profiling profile, wherein the profile of the profiling profile is consistent with that of a workpiece to be processed, and a plurality of limiting holes are arranged on the outer side of the profiling profile;

2) milling the appearance of the workpiece: when the workpiece appearance is milled, reserving a plurality of lug plates at the edge of the workpiece, wherein the positions of the lug plates correspond to the positions of the limiting holes in the step 1);

3) opening the vacuum chuck, fitting the workpiece with the profiling contour on the vacuum chuck, fixedly connecting the lug with the limiting hole, and keeping the workpiece to be processed and the rest positions of the vacuum chuck except the positioning hole to be cut in a vacuum adsorption state;

4) step 3), after the positioning is finished, milling the positioning hole according to the processing requirement;

5) milling lugs after the step 4);

6) and closing the vacuum chuck, and taking down the processed workpiece.

2. The method of manufacturing an ultra-long beam having positioning holes as claimed in claim 1, wherein the positioning holes are formed in a rectangular shape. The profiling contour in the step 1) is a contour completely consistent with the shape of a workpiece to be processed and formed on a vacuum chuck by using an adhesive tape, and a limit structure with a sealing structure is arranged in the contour, and the sealing structure is positioned at the contact position of the limit structure and the vacuum chuck.

3. The method of processing an ultra-long beam having positioning holes as claimed in claim 1, wherein: the limiting structure is a cylindrical boss and corresponds to the shape of a workpiece to be processed; according to the difference of the workpieces to be processed, the limiting structures with different shapes can be selected.

4. The method of processing an ultra-long beam having positioning holes as claimed in claim 1, wherein: the cylindrical boss is provided with a countersunk bolt hole for fixedly connecting a workpiece to be processed with the vacuum platform.

5. The method for processing an ultra-long beam with positioning holes as claimed in claim 2, wherein: the sealing structure is a sealing ring, and the sealing ring is positioned at the contact position of the cylindrical boss and the vacuum platform.

Technical Field

The invention relates to a method for processing an overlong beam with a positioning hole, and belongs to the technical field of production and processing of overlong beams.

Background

The existing longer beam is easy to vibrate in the machining process, the machining precision cannot meet the requirement, a cutter is easy to damage, and a workpiece is scrapped.

Disclosure of Invention

The invention provides a method for processing an overlong beam with a positioning hole, which is characterized in that a cylindrical boss is arranged on a vacuum chuck, the position of the cylindrical boss corresponds to the positioning hole of a position to be processed of a workpiece, and a sealing ring is sleeved on the outer circumference of the cylindrical boss.

The technical scheme for solving the problem is as follows: a processing method of an ultra-long beam with positioning holes comprises the following steps:

1) carrying out profiling preparation on a vacuum chuck, using an adhesive tape to circle a contour which is completely consistent with the appearance of a workpiece to be processed on the vacuum chuck, and installing a limiting structure with a sealing structure in the vacuum chuck, wherein the sealing structure is positioned at the contact part of the limiting structure and the vacuum chuck, and a plurality of limiting holes are arranged on the outer side of the profiling contour; due to the sealing structure, even if the positioning hole is milled to be large in the machining process, the air leakage phenomenon cannot occur, and other areas except the positioning hole and the vacuum chuck are always in a vacuum adsorption state.

2) Milling the appearance of the workpiece: when the workpiece appearance is milled, reserving a plurality of lug plates at the edge of the workpiece, wherein the positions of the lug plates correspond to the positions of the limiting holes in the step 1);

3) opening the vacuum chuck, fitting the workpiece with the contour on the vacuum chuck, fixedly connecting the lug with the limiting hole, and keeping the workpiece and the other positions of the vacuum chuck except the positioning hole to be cut in a vacuum adsorption state;

4) step 3), after the positioning is finished, milling the positioning hole according to the processing requirement;

5) milling lugs after the step 4);

6) and closing the vacuum chuck, and taking down the processed workpiece.

The limiting structure is a cylindrical boss and corresponds to the shape of a workpiece to be processed; according to the difference of the workpieces to be processed, the limiting structures with different shapes can be selected.

The cylindrical boss is provided with a countersunk bolt hole, so that a workpiece to be processed is conveniently and fixedly connected with the vacuum platform.

The sealing structure is a sealing ring, the sealing ring is positioned at the contact part of the cylindrical boss and the vacuum platform, the sealing effect is achieved, and the air leakage phenomenon is avoided when the hole is machined.

The invention has the following beneficial effects: the ultra-long beam is stably processed, workpieces cannot vibrate in the processing process, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a workpiece to be processed.

FIG. 2 is a schematic sectional view A-A of FIG. 1.

Fig. 3 is a schematic view of a vacuum chuck structure.

Fig. 4 is a schematic structural diagram of processing a workpiece to be processed on a vacuum chuck.

The machining method comprises the following steps of 1-a workpiece to be machined, 2-a vacuum flat disc, 3-a profiling outline, 4-a limiting structure, 5-a limiting hole, 6-a lug and 7-a sealing structure.

Detailed Description

As shown in fig. 1-4, a method for processing an ultra-long beam with positioning holes comprises the following steps:

1) carrying out profiling preparation on a vacuum chuck 2, using an adhesive tape to circle a profiling outline 3 which is completely consistent with the appearance of a workpiece 1 to be processed on the vacuum chuck 2, and installing a limiting structure 4 with a sealing structure 7 in the vacuum chuck 2, wherein the sealing structure 7 is positioned at the contact part of the limiting structure 4 and the vacuum chuck 2, and a plurality of limiting holes 5 are arranged on the outer side of the profiling outline 3; due to the sealing structure 7, even if the positioning hole is milled to be large in the machining process, the air leakage phenomenon cannot occur, other areas except the positioning hole and the vacuum chuck 2 are always in a vacuum adsorption state, and the vacuum chuck 2 is used for guaranteeing the thickness and the flatness of the web surface at the bottom of the workpiece 1 to be machined.

2) Milling the appearance of the workpiece: when the workpiece appearance is milled, reserving a plurality of lug plates 6 at the edge of the workpiece, wherein the positions of the lug plates 6 correspond to the positions of the limiting holes 5 in the step 1);

3) the vacuum chuck 2 is opened, the workpiece is attached to the contour of the vacuum chuck 2, the lug 6 is fixedly connected with the limiting hole 5, and the workpiece and the rest positions of the vacuum chuck 2 except the positioning hole to be cut are in a vacuum adsorption state;

4) step 3), after the positioning is finished, milling the positioning hole according to the processing requirement;

5) milling lugs 6 after the step 4);

6) and closing the vacuum chuck 2 and taking down the processed workpiece.

The vacuum chuck 2 forms a temporary closed space after contacting with an object, air in the closed space is pumped away or thinned through a pneumatic pipeline or a certain device, the air pressure in the closed space is lower than the external atmospheric pressure, and an internal and external pressure difference is generated. The external atmospheric pressure will press the object and the vacuum chuck 2 firmly together. The vacuum chuck 2 is generally used for carrying and fixing objects, and accessories such as a vacuum generator, a vacuum switch, a vacuum gauge and the like are assembled with the vacuum chuck 2 to realize automatic vacuum suction.

The limiting structure 4 is a cylindrical boss and corresponds to the workpiece 1 to be processed in shape; the limiting structures 4 with different shapes can be selected according to different workpieces 1 to be processed.

The cylindrical boss is provided with a countersunk bolt hole, so that the workpiece 1 to be processed is conveniently and fixedly connected with the vacuum platform.

The sealing structure 7 is a sealing ring, the sealing ring is positioned at the contact part of the cylindrical boss and the vacuum platform, plays a role in sealing, and avoids the phenomenon of air leakage during hole machining.

What has been described above is merely a preferred embodiment of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the principle of the present invention, and they should also be considered as falling within the scope of the present invention.