阅读说明：本技术 一种增压器锁紧片的加工方法及其翻边工具 (Processing method of supercharger locking sheet and flanging tool thereof ) 是由 熊德金 蒋中亮 袁华 周德贵 税顺云 刘相成 张德金 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种增压器锁紧片的加工方法及其翻边工具,提高产品合格率,降低操作人员的操作难度。一种增压器锁紧片的加工方法,包括以下步骤：S1、将板料加工为板条；S2、将多个板条重叠对齐后点焊固定；S3、将板条线切割出增压器锁紧片的展开形状；S4、用翻边工具对增压器锁紧片翻边,得到增压器锁紧片成品。(The invention discloses a machining method of a locking sheet of a supercharger and a flanging tool thereof, which can improve the product percent of pass and reduce the operation difficulty of operators. A machining method of a supercharger locking sheet comprises the following steps: s1, processing the plate into a lath; s2, overlapping and aligning a plurality of laths and then fixing the laths by spot welding; s3, cutting the batten wire into the unfolding shape of the supercharger locking sheet; and S4, flanging the locking sheet of the supercharger by using a flanging tool to obtain a finished product of the locking sheet of the supercharger.)

1. The machining method of the supercharger locking sheet is characterized by comprising the following steps of:

s1, processing the plate into a lath;

s2, overlapping and aligning a plurality of laths and then fixing the laths by spot welding;

s3, cutting the batten wire into the unfolding shape of the supercharger locking sheet;

and S4, flanging the locking sheet of the supercharger by using a flanging tool to obtain a finished product of the locking sheet of the supercharger.

2. A flanging tool for the machining method of the locking piece of the supercharger in claim 1 is characterized in that: the locking piece flanging tool comprises a positioning block and a pressing block, wherein a positioning groove is formed in the positioning block and is used for positioning a riveting part and a bending part of a locking piece of the supercharger and positioning a connecting part between the riveting part and the bending part, and the end face of the positioning block, which corresponds to the bending part of the locking piece of the supercharger, is a flanging end face and is used for limiting the flanging position of the bending part of the locking piece of the supercharger; the pressing block is used for pressing and fixing the pressing block on the supercharger locking piece.

3. The flanging tool of claim 2, wherein: the locating piece corresponds the one end of the riveting portion of booster stay and is equipped with the location step face, the location step face is used for fixing a position the riveting portion of compact heap, booster stay.

4. The flanging tool of claim 2, wherein: and the two sides of the pressing block are respectively provided with a positioning spigot, and the end surfaces of the two sides of the positioning block are matched and positioned with the two positioning spigots.

5. The flanging tool of claim 2, wherein: the pressing block is provided with a pressing bulge on the end face of the bending part corresponding to the supercharger locking sheet, and is used for pressing the bending part of the supercharger locking sheet and avoiding the round-head sharp corner block of the bending part pressing the supercharger locking sheet.

Technical Field

The invention relates to the technical field of turbochargers, in particular to a machining method of a supercharger locking sheet and a flanging tool thereof.

Background

The turbocharger is an environment-friendly product advocated by China, has the effects of energy conservation, efficiency improvement and energy source cleaning, and is widely applied to multiple fields of ship shipping, transportation and the like.

The shaft flow supercharger in the new generation of medium speed engine is one of novel products independently developed by our company. Where the main shaft and turbine blades are heavy parts in the turbocharger. 42 mortises are machined on the excircle of the main shaft wheel disc (see figure 1), 42 blades need to be assembled, the root parts of the blades are machined into tenon teeth (see figure 2), and the mortise and the tenon teeth are matched. In order to achieve the purposes that the blades and the turbine disc cannot loosen in the radial direction and move in the axial direction after being assembled and the machine is stable and reliable in operation, locking sheets are required to be used for locking (see figure 3). Namely: the locking piece penetrates through the bottom of the mortise, two round-head sharp corner blocks at the bending end of the locking piece are fixed in the mortise, and the other end of the locking piece is manually riveted on the end face of the turbine disc after being tensioned. Therefore, the locking sheet is one of the important parts in the rotor part sleeve of the supercharger.

The original manufacture of the locking sheet can be completed by using two sets of dies including a blanking die and a flanging die.

1.2) the original process route is as follows: the method comprises the following steps of cutting (cutting a plate into long strips) → punching (punching the shape by a die at one time) → clamping (removing sharp-edged burrs) → flanging by a flanging die for punching.

1.3) the problems existing in the prior art:

because the part has a complex shape and a too small width dimension (the narrowest position is only 2.2mm), the female die is extremely easy to blunt, and the punch head is frequently broken;

the punched parts have more flanging burrs and difficult deburring process;

the sizes of the parts after the convex die and the concave die are blunted are difficult to ensure;

the convex and concave dies need to be frequently polished after being blunted, so that the manufacturing cost is higher;

the flanging die is inconvenient to operate due to the fact that parts are too small.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a machining method of a locking sheet of a supercharger and a flanging tool thereof, improves the product percent of pass and reduces the operation difficulty of operators.

The purpose of the invention is realized as follows:

a machining method of a supercharger locking sheet comprises the following steps:

s1, processing the plate into a lath;

s2, overlapping and aligning a plurality of laths and then fixing the laths by spot welding;

s3, cutting the batten wire into the unfolding shape of the supercharger locking sheet;

and S4, flanging the locking sheet of the supercharger by using a flanging tool to obtain a finished product of the locking sheet of the supercharger.

A flanging tool for a machining method of a supercharger locking sheet comprises a positioning block and a pressing block, wherein a positioning groove is formed in the positioning block and used for positioning a riveting part and a bending part of the supercharger locking sheet and positioning a connecting part between the riveting part and the bending part, and the end face of the positioning block, corresponding to the bending part of the supercharger locking sheet, is a flanging end face and used for limiting the flanging position of the bending part of the supercharger locking sheet; the pressing block is used for pressing and fixing the pressing block on the supercharger locking piece.

Preferably, one end of the positioning block, which corresponds to the riveting part of the supercharger locking sheet, is provided with a positioning step surface, and the positioning step surface is used for positioning the riveting parts of the pressing block and the supercharger locking sheet.

Preferably, two sides of the pressing block are respectively provided with a positioning spigot, and end faces of two sides of the positioning block are matched with the two positioning spigots for positioning.

Preferably, the pressing block is provided with a pressing bulge on the end face of the bending part corresponding to the supercharger locking sheet, and is used for pressing the bending part of the supercharger locking sheet and avoiding the round-head sharp-angled block of the bending part pressing the supercharger locking sheet.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

aiming at the problems that two sets of dies are required to be used for a locking sheet originally, the number of flanging burrs of parts is large after the dies are blunted, the dies are frequently polished after being blunted, the operation is inconvenient and the like, the process is optimized and improved according to the existing conditions of companies, old dies are eliminated, and feasible flanging dies are redesigned. Thereby improving the product percent of pass and reducing the operation difficulty of operators.

Drawings

FIG. 1 is a schematic view of a mortise machining process for a spindle;

FIG. 2 is a schematic view of a blade root portion being machined to form a dovetail;

FIG. 3 is an assembly view of the locking tab;

FIG. 4 is a schematic view of the locking tab process;

FIG. 5 is a schematic view of the flanging tool;

FIG. 6 is a schematic structural view of a compact;

fig. 7 is a schematic structural diagram of the positioning block.

Reference numerals

In the attached drawing, 1 is the compact heap, 2 is the locating piece, 3 is the constant head tank, 4 is the turn-ups terminal surface, 5 is the riveting portion, 6 is the portion of bending, 7 is connecting portion, 8 is the location step face, 9 is for compressing tightly the arch, 10 is the location tang, 11 is button head closed angle piece.

Detailed Description

Referring to fig. 5-7, a flanging tool for a machining method of a supercharger locking sheet comprises a positioning block and a pressing block, wherein the positioning block is provided with a positioning groove, the positioning groove is used for positioning a riveting part and a bending part of the supercharger locking sheet and positioning a connecting part between the riveting part and the bending part, and the end surface of the positioning block, which corresponds to the bending part of the supercharger locking sheet, is a flanging end surface and is used for limiting the flanging position of the bending part of the supercharger locking sheet; the pressing block is used for being pressed and fixed on the supercharger locking piece, and in the embodiment, the positioning block and the pressing block are placed on the flat tongs to be fixed and turned over manually.

The locating piece corresponds the one end of the riveting portion of booster stay and is equipped with the location step face, the location step face is used for fixing a position the riveting portion of compact heap, booster stay. And the two sides of the pressing block are respectively provided with a positioning spigot, and the end surfaces of the two sides of the positioning block are matched and positioned with the two positioning spigots. The pressing block is provided with a pressing bulge on the end face of the bending part corresponding to the supercharger locking sheet, and is used for pressing the bending part of the supercharger locking sheet and avoiding the round-head sharp corner block of the bending part pressing the supercharger locking sheet.

Processing method of supercharger locking sheet

Step 10: sheet metal: the equipment is VR8X3000, and has two steps. Step 1: checking the thickness of the plate, wherein the requirement of a drawing is required to be met; step 2: blanking according to the specification requirement delta 1.3X70X50

Step 20: the welding equipment is as follows: LHF400, has two steps. Step 1: removing sharp edge burrs; step 2: after the multiple pieces are overlapped and aligned, the four sides are fixed by spot welding (the thickness of each group is recommended not to exceed 70)

Step 30: wire cutting: the equipment is AR55-MA, and the process content is as follows: cutting the outer shape according to the requirement of dispatching single figure number and the comparison of the form and the drawing size

Step 40: sheet metal: step 1: deburring and flashing; step 2: and finding out a die corresponding to the dispatching list figure number, and then flanging to the height size of the drawing.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.