阅读说明：本技术 一种细小零件批量处理毛边方法 (Method for batch treatment of burrs of fine parts ) 是由 张勇 魏泽贵 颜主才 于 2020-05-06 设计创作，主要内容包括：本发明涉及机械加工技术领域,尤其为一种细小零件批量处理毛边方法,包括以下步骤：步骤1：通过电火花线切割加工进行备料,加工出零件粗坯；步骤2：将步骤1中得到的零件粗坯通过磨床进行研磨超精密加工,使零件粗坯加工出直角；步骤3：将研磨主体按PH值开槽,在主体料上四周以开槽的方式切出单件厚度,并单边留取0.005mm-0.010mm余量；步骤4：将18片为一个主体的主体料分为6件为一个主体,即平均分为3个主体；步骤5：采用EDM电火花加工在主体上同时加工6件；步骤6；对加工好的主体进行全面质量检测；步骤7：按照主体切出的厚度进行研磨分片,通过研磨的方式使每片水平精准；步骤8：处理其他的棱边毛刺；步骤9：再次进行质量检测并交货。(The invention relates to the technical field of machining, in particular to a method for processing burrs of small parts in batches, which comprises the following steps: step 1: preparing materials by wire cut electrical discharge machining, and machining a rough blank of the part; step 2: grinding the part rough blank obtained in the step 1 through a grinding machine for ultra-precision machining to enable the part rough blank to be machined into a right angle; and step 3: slotting the grinding main body according to the pH value, cutting a single piece of thickness on the periphery of the main body material in a slotting mode, and reserving a margin of 0.005mm-0.010mm on a single side; and 4, step 4: dividing 18 pieces of main body materials into 6 pieces of main bodies, namely, dividing the main bodies into 3 main bodies on average; and 5: EDM spark machining is adopted to simultaneously machine 6 pieces on the main body; step 6; carrying out comprehensive quality detection on the processed main body; and 7: grinding and slicing according to the thickness cut out by the main body, and enabling each slice to be accurate horizontally in a grinding mode; and 8: processing other edge burrs; and step 9: and carrying out quality detection again and delivering.)

1. A method for processing burrs of small parts in batch is characterized in that: the method comprises the following steps:

step 1: preparing materials by wire cut electrical discharge machining, and machining a rough blank of the part;

step 2: grinding the part rough blank obtained in the step 1 through a grinding machine for ultra-precision machining to enable the part rough blank to be machined into a right angle;

and step 3: slotting the grinding main body according to the pH value, cutting a single piece of thickness on the periphery of the main body material in a slotting mode, and reserving a margin of 0.005mm-0.010mm on a single side;

and 4, step 4: dividing 18 pieces of main body materials into 6 pieces of main bodies, namely, dividing the main bodies into 3 main bodies on average;

and 5: EDM spark machining is adopted to simultaneously machine 6 pieces on the main body;

step 6; carrying out comprehensive quality detection on the processed main body;

and 7: grinding and slicing according to the thickness cut out by the main body, and enabling each slice to be accurate horizontally in a grinding mode;

and 8: processing other edge burrs;

and step 9: and carrying out quality detection again and delivering.

2. The fine part batch burr processing method according to claim 1, wherein: and (3) adopting molybdenum wires as electrode wires for the wire electric discharge machining in the step (1), wherein the wire moving speed is 8-10 m/s.

3. The method for batch processing of burrs of fine parts according to claim 2, wherein: the grinding ultra-precision machining in the step 2 adopts any one of a disc grinder or a rotating shaft grinder.

4. The fine part batch burr processing method according to claim 1, wherein: and 3, deep processing of the single edge at the periphery by 0.08-0.15 mm.

5. The fine part batch burr processing method according to claim 1, wherein: the material distributing process in the step 4 can adopt manual material distributing or mechanical material distributing.

6. The fine part batch burr processing method according to claim 1, wherein: the operation steps of EDM electric spark machining in the step 5 are as follows:

step 1: the electric spark forming machine firstly checks the ON of a main switch of a power supply;

step 2: installing an electrode and a chuck, correcting the vertical and parallel reference, placing a workpiece on a magnetic device workbench, and after correcting the parallel reference, magnetically attracting and fixing;

and step 3: using the electrode to search the X.Y coordinate of the discharge position of the workpiece, adjusting AT to OA, PA20 μ S to 45 μ S when searching edge;

and 4, step 4: selecting copper as a positive electrode and a workpiece as a negative electrode;

and 5: adjusting the current AT, matching the discharge time PA, and performing rough ATS to 45A, PA60s to 120 μ s;

step 6: adjusting the rest time PB and the discharge gap voltage, wherein the gap voltage is adjusted to 3 or 4 when the discharge gap voltage is roughly adjusted to PB 3-4, the gap voltage is adjusted to 5 or 6 when the discharge gap voltage is finely adjusted to 5 or 6;

and 7: servo strength, servo setting, servo adjusting to 6 or 7 during rough magnification, and setting up and down vibration time of the handpiece to 5\4 or 4\4 respectively; when fine setting is carried out, the servo is adjusted to 5, and the up-and-down moving time of the nose is respectively set to 5\2 or 6\ 3;

and 8: turning on the liquid level control switch and turning on the sleep switch;

and step 9: manually feeding the servo tool to reach the Z-axis datum plane position, setting the discharge depth, inputting data at the moment when the electrode is completely contacted with the workpiece during the depth setting, and then correcting the Z axis according to the difference value;

step 10: processing a hydraulic motor ON, and adjusting the oil flushing position;

step 11: a discharge switch is ON;

step 12: observing whether the V meter, the A meter index and the servo stability indicator lamp are stable or not;

step 13: confirming whether the discharge position is correct;

step 14: the processed workpiece electrode and the related figure file are placed at the corresponding indication position.

7. The fine part batch burr processing method according to claim 1, wherein: and 7, after the processing in the step 7, the reference surface of the slice can be visually leveled when the slice is processed to be thick, and then the slice is placed in place for size.

8. The fine part batch burr processing method according to claim 1, wherein: and in the step 8, other edge burrs can be processed in a grinding and deburring mode.

Technical Field

The invention relates to the technical field of machining, in particular to a method for processing burrs of small parts in batches.

Background

Present accurate electronic connector product requires constantly to improve, and the product requires zero defect, so to the zero disappearance of mould part machining precision requirement in batches, current processing technology to the fine part of a cover mould 200PCS assembles the constitution, adds man-hour when this batch of part through each process, produced deckle edge when whole in-process adds, and the processing is gone up at the oilstone repeatedly, can lead to appearance edges and corners limit collapse, plane unevenness. During machining, due to the fact that the area of the bottom of a part is small, the whole surface of the part is pushed to be small on an oilstone during burr treatment, and the situation that clamping is inconsistent during FG machining occurs; the processing time is long, the processing cost is high, the processing of burrs needs 12H in 200 pieces, the processing efficiency is low, the flatness and the size of a product produced by die assembly cannot meet the requirements, single part is not obviously checked by analyzing reasons, and a lot of troubles are brought to the problem searching point in the process improvement. In view of this, we propose a batch burr treatment method for small parts.

Disclosure of Invention

The invention aims to provide a method for processing burrs of fine parts in batch, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for processing burrs of small parts in batches comprises the following steps:

step 1: preparing materials by wire cut electrical discharge machining, and machining a rough blank of the part;

step 2: grinding the part rough blank obtained in the step 1 through a grinding machine for ultra-precision machining to enable the part rough blank to be machined into a right angle;

and step 3: slotting the grinding main body according to the pH value, cutting a single piece of thickness on the periphery of the main body material in a slotting mode, and reserving a margin of 0.005mm-0.010mm on a single side;

and 4, step 4: dividing 18 pieces of main body materials into 6 pieces of main bodies, namely, dividing the main bodies into 3 main bodies on average;

and 5: EDM spark machining is adopted to simultaneously machine 6 pieces on the main body;

step 6; carrying out comprehensive quality detection on the processed main body;

and 7: grinding and slicing according to the thickness cut out by the main body, and enabling each slice to be accurate horizontally in a grinding mode;

and 8: processing other edge burrs;

and step 9: and carrying out quality detection again and delivering.

In the wire electric discharge machining in the step 1, a molybdenum wire is preferably used as a wire electrode, and the wire feeding speed is 8-10 m/s.

As a preferable aspect of the present invention, the grinding ultra-precision processing in step 2 is performed by using any one of a disc grinder and a spindle grinder.

Preferably, in the step 3, the peripheral single edge is deeply processed by 0.08mm-0.15 mm.

As the optimization of the invention, the material distribution process in the step 4 can adopt manual material distribution or mechanical material distribution.

Preferably, the EDM electro-discharge machining in step 5 comprises the following steps:

step 1: the electric spark forming machine firstly checks the ON of a main switch of a power supply;

step 2: installing an electrode and a chuck, correcting the vertical and parallel reference, placing a workpiece on a magnetic device workbench, and after correcting the parallel reference, magnetically attracting and fixing;

and step 3: using the electrode to search the X.Y coordinate of the discharge position of the workpiece, adjusting AT to OA, PA20 μ S to 45 μ S when searching edge;

and 4, step 4: selecting copper as a positive electrode and a workpiece as a negative electrode;

and 5: adjusting the current AT, matching the discharge time PA, and performing rough ATS to 45A, PA60s to 120 μ s;

step 6: adjusting the rest time PB and the discharge gap voltage, wherein the gap voltage is adjusted to 3 or 4 when the discharge gap voltage is roughly adjusted to PB 3-4, the gap voltage is adjusted to 5 or 6 when the discharge gap voltage is finely adjusted to 5 or 6;

and 7: servo strength, servo setting, servo adjusting to 6 or 7 during rough magnification, and setting up and down vibration time of the handpiece to 5\4 or 4\4 respectively; when fine setting is carried out, the servo is adjusted to 5, and the up-and-down moving time of the nose is respectively set to 5\2 or 6\ 3;

and 8: turning on the liquid level control switch and turning on the sleep switch;

and step 9: manually feeding the servo tool to reach the Z-axis datum plane position, setting the discharge depth, inputting data at the moment when the electrode is completely contacted with the workpiece during the depth setting, and then correcting the Z axis according to the difference value;

step 10: processing a hydraulic motor ON, and adjusting the oil flushing position;

step 11: a discharge switch is ON;

step 12: observing whether the V meter, the A meter index and the servo stability indicator lamp are stable or not;

step 13: confirming whether the discharge position is correct;

step 14: the processed workpiece electrode and the related figure file are placed at the corresponding indication position.

Preferably, in the present invention, after the step 7, the reference surface of the wafer is visually leveled and the wafer is cut to a desired size when the thickness of the wafer is measured.

Preferably, in step 8, other edge burrs can be processed by grinding and deburring.

Compared with the prior art, the invention has the beneficial effects that: the problems of edge collapse and the like of the tiny parts are integrally solved, and the quality of the parts is integrally improved. Effectively reduce part deformation factor through the slotted mode when processing the main part, it is in the wholeness to handle the burr, align many products and form a main part after and handle the deckle edge together, do not have the singlepiece, very big save time has improved work efficiency, it is in the contact of whole main part plane when handling the burr on the oilstone, can not have to put the slope and lead to the phenomenon of collapsing, the effectual quality and the progress that improves the product, the good problem of tiny part machining inefficiency and easy collapsing of having solved.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the invention is as follows: