一般情況下，工件通過(guò)熱處理后會(huì)變形，有的面凹，有的面凸，硬度較硬，有的斜頂變形嚴(yán)重，加工較困難，工件越大越厚反而變形較少，加工起來(lái)比較容易，…
In general, the workpiece will deform after heat treatment. Some surfaces are concave, some surfaces are convex, and the hardness is hard. Some inclined tops are seriously deformed, which is more difficult to process. The larger and thicker the workpiece, the less deformation, and it is easier to process
一般情況下，工件通過(guò)熱處理后會(huì)變形，有的面凹，有的面凸，硬度較硬，有的斜頂變形嚴(yán)重，加工較困難，工件越大越厚反而變形較少，加工起來(lái)比較容易，所以要根據(jù)工件的大小來(lái)確定加工的方式。
Generally, the workpiece will be deformed after heat treatment. Some surfaces are concave, some are convex, and the hardness is hard. Some inclined tops are seriously deformed, which makes it difficult to process. The larger and thicker the workpiece, the less deformation, and it is easier to process. Therefore, the processing method should be determined according to the size of the workpiece.
在塑膠模具前后模仁、滑塊、耐模板等通過(guò)大水磨加工開(kāi)粗，鋼料的余量一般都會(huì)在50-60絲左右余量，在塑膠模具中模仁、滑塊的精度要求相當(dāng)高，所以在對(duì)工件的加工前，先對(duì)工件各個(gè)部位的尺寸進(jìn)行卡數(shù)，看余量是否充足和均衡，尤其有臺(tái)階的工件一定要卡仔細(xì)，做到心中有數(shù)合理加班工件的幾個(gè)面，從而避免一個(gè)面的余量多碾磨，而造成其它的面余量不足，導(dǎo)致工件直接報(bào)廢。
Before and after the plastic mold, the mold kernel, sliding block and resistant template are roughened by large water grinding. The allowance of steel is generally about 50-60 wires. In the plastic mold, the accuracy requirements of mold kernel and sliding block are quite high. Therefore, before processing the workpiece, the dimensions of each part of the workpiece shall be counted to see whether the allowance is sufficient and balanced, In particular, the workpiece with steps must be carefully clamped, so as to know several surfaces of the workpiece reasonably, so as to avoid excessive grinding of the allowance of one surface, resulting in insufficient allowance of other surfaces, resulting in the direct scrapping of the workpiece.
所以在水磨加工過(guò)程中首先對(duì)工件的一個(gè)平面進(jìn)行碾磨，盡量選擇變形的一面先進(jìn)行碾磨，在控制好余量，碾磨之前把砂輪修平，開(kāi)粗前砂輪不要修得太細(xì)，大水磨的工作臺(tái)面上要擦得干干凈凈，上磁，啟動(dòng)電源，抬高機(jī)頭，對(duì)刀，輕輕地溜一刀，看在工件的平面那里擦出火花，抬高10-20絲，開(kāi)啟自動(dòng)，再次溜刀，前后左右擺動(dòng)的行程調(diào)節(jié)好，邊溜刀邊輕輕進(jìn)刀，開(kāi)啟切削液進(jìn)行冷卻，慢慢進(jìn)刀直到擦出火花，看刻度并把刻度歸零，方便記住加工進(jìn)了多少余量，看擦出火花的大小來(lái)確定進(jìn)刀量，由于熱處理的工件較硬，在碾磨的過(guò)程中砂輪會(huì)很吃力，非常難啃，所以要不斷的修復(fù)砂輪，確保砂輪的尖銳性，較快的把工件面碾磨好，最后幾刀進(jìn)幾絲輕輕的光刀，使工件的面光滑、平。再把光好的面放在機(jī)臺(tái)臺(tái)面上，進(jìn)行這個(gè)面的碾磨加工，通過(guò)上述方法進(jìn)行操作，把工件直接加工到位。
Therefore, in the process of water grinding, first grind a plane of the workpiece, select the deformed side as much as possible, grind it first, control the allowance, flatten the grinding wheel before grinding, do not repair the grinding wheel too fine before roughing, wipe the worktable of the large water mill clean, apply magnetism, start the power supply, raise the machine head, set the knife, and slide the knife gently, Look at the spark on the plane of the workpiece, raise it by 10-20 wires, turn on the automatic, slide the tool again, adjust the stroke of swinging back and forth, feed gently while sliding the tool, turn on the cutting fluid for cooling, feed slowly until the spark is rubbed, look at the scale and return the scale to zero, so as to remember how much allowance has been processed, and determine the feed amount by looking at the size of the spark, As the heat-treated workpiece is hard, the grinding wheel will be very difficult to chew in the grinding process, so it is necessary to constantly repair the grinding wheel to ensure the sharpness of the grinding wheel, grind the workpiece surface quickly, and finally insert a few light knives into the last few knives to make the surface of the workpiece smooth and flat. Then put the polished surface on the machine table, grind and process this surface, and operate through the above methods to directly process the workpiece in place.
再以碾磨好的上下面為基準(zhǔn)面，借助于PS治具打直角，不同的工件采用不同的裝夾方法，用光好的上下面死貼PS的兩個(gè)垂直面，再用扳手鎖緊，工件的另一面不要超出PS的側(cè)面，把PS擦干凈，PS的正面放在臺(tái)面上進(jìn)行碾磨，見(jiàn)光就止，再停機(jī)，把PS拿下來(lái)，弄干凈，臺(tái)面擦干凈，以確保工件的垂直度，再把PS的側(cè)面平放在工作臺(tái)面上，上磁；把工件的這個(gè)面給光出來(lái)，控制好余量，再把工件從PS中拿出來(lái)，這里一定要注意，工件的毛刺一定要清理干凈，工作臺(tái)面一定要弄干凈，不然會(huì)影響工件的垂直度。
Then, take the milled upper and lower parts as the datum plane, make a right angle with the help of PS fixture, adopt different clamping methods for different workpieces, stick the two vertical planes of PS with the polished upper and lower parts, and then lock them with a wrench. The other side of the workpiece shall not exceed the side of PS, wipe the PS clean, put the front side of PS on the table for grinding, stop at the sight of light, stop the machine, take down the PS and clean it, Clean the worktable to ensure the verticality of the workpiece, and then place the side of PS flat on the worktable for magnetization; Light this surface of the workpiece, control the allowance, and then take the workpiece out of the PS. here, we must pay attention to that the burrs of the workpiece must be cleaned, and the worktable must be cleaned, otherwise the perpendicularity of the workpiece will be affected.
對(duì)工件進(jìn)行檢測(cè)，把通過(guò)檢測(cè)儀器測(cè)出工件的垂直度，前后相差多少絲，若垂直度不合格，工件通過(guò)上述方法再次對(duì)工件進(jìn)行打直角處理；在公差范圍內(nèi)合格，再對(duì)其它兩個(gè)面進(jìn)行碾磨加工，把工件的尺寸加工到位，值得注意的事，不同的工件有不同的加工方式和方法，無(wú)論加工那個(gè)面，都要把工件的毛刺除干凈，機(jī)臺(tái)臺(tái)面擦干凈，以確保工件的精度。
Detect the workpiece, measure the perpendicularity of the workpiece through the detection instrument, and the difference between the front and back. If the perpendicularity is unqualified, the workpiece shall be right angled again through the above methods; If it is qualified within the tolerance range, grind the other two surfaces and process the dimensions of the workpiece in place. It is worth noting that different workpieces have different processing methods and methods. No matter which surface is processed, the burr of the workpiece shall be removed and the machine table surface shall be wiped clean to ensure the accuracy of the workpiece.
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