磨床维修（www.zjqinlong.com）前的准备工作主要包括对所修机床修前状态的调查，即对机床的精度状况、故障情况的调查和分析，然后编制技术准备书，制定基本修理方案，列出所要更换或修复零件的明细表。准备工作的好坏直接影响到大修工作的顺利进行和维修质量，应力求准确、全面、可行。

 

下面小编主要介绍下磨床的操作以及维修：

矩形槽的切削：

 

1.在切削较窄的矩形槽时，主切削刃宽度与沟槽的宽度相等，刀头长度略大于槽深，车刀一次直进车出。

 

2.车削较宽的矩形槽，可用较窄的切槽刀，分几次左右窜刀粗车，在槽底面和两侧面留出余量后，用精车刀车至尺寸。

 

成形槽的切削：

 

成形槽包括圆弧槽和梯形槽等。

 

1)较窄的圆弧槽或梯形槽，磨床将车槽刀刃磨成与成形槽的形状和尺寸相同的形式，一次横向进给车出。

 

2)较宽较深的成形槽，特别是内孔的成形槽，由于受到车刀刚度的制约，往往采取以下两种方法：

 

①分两步切削。一般是先用切槽刀车出直槽，然后用成形刀车削成形。

 

②左右窜刀进给或斜向进给。车床当威形槽特宽特深时，可在中滑板横向进鲐的同时，摇动小滑板，使车刀作或左或右的微量移动，磨床形成单面切削的左右窜刀进给；或在中滑板横向进给的同时，摇动小滑板，使车刀沿一个方向作微量移动的单面斜向进给。粗车后留有综量，再用精车刀车至尺寸。

斜沟槽的切削：

 

磨床主轴不动作的故障原因

 

(1)电磁盘未吸磁

 

(2)主轴激活开关故障

 

(3)电磁开关故障

 

(4)控制线送脱磨床

 

(5)主轴联轴器损坏

 

(6)主轴马达故障

 

故障排除对策

 

(1)激活电磁盘电磁开关

 

(2)更换(照光)

 

(3)更换电磁开关

 

(4)检查或更换控制线电路

 

(5)更换主轴联轴器

 

(6)更换主轴开关

其实在磨床维修的磨削过程中产生振动，使砂轮和工件问相对位置发生周期性的变动，使工件表面产生振纹，严重影响加工质量和精度。

 

要提高磨削后的工件精度，除努力消除上述因素的影响外，还必须注意工件加工过程中定位基准的合理选择、装夹方法、砂轮的选择与正确修理、合理选择磨削用量和工艺方法。

 

 安吉圆磨机械科技有限公司创始于2016年，前身浙江勤龙机械科技股份有限公司，主要从事数控卧轴圆台平面磨床设备的研发、生产、销售。公司的信念是创新、诚信、思想、态度。

The preparatory work before grinding machine maintenance (www.zjqinlong. Com) mainly includes the investigation and analysis of the pre maintenance status of the repaired machine tool, that is, the investigation and analysis of the accuracy status and failure status of the machine tool, and then the preparation of technology, the formulation of basic repair plan, and the list of parts to be replaced or repaired. The quality of preparation work directly affects the smooth progress of overhaul work and maintenance quality, and it should be accurate, comprehensive and feasible.

 

 

 

The following editor mainly introduces the operation and maintenance of the lower grinder:

 

Cutting of rectangular groove:

 

 

 

1. When cutting a narrow rectangular groove, the width of the main cutting edge is equal to the width of the groove, the length of the tool head is slightly greater than the depth of the groove, and the turning tool goes in and out at a time.

 

 

 

2. For turning wide rectangular groove, narrow groove cutter can be used, and the rough turning can be done by several times of left and right tool shifting. After the allowance is left at the bottom and both sides of the groove, the fine turning tool can be used to turn to the size.

 

 

 

Cutting of forming groove:

 

 

 

Forming groove includes arc groove and trapezoid groove.

 

 

 

1) For the narrow arc groove or trapezoid groove, the grinding machine grinds the cutting edge of the groove into the form of the same shape and size as the forming groove, and feeds the groove out once.

 

 

 

2) Due to the rigidity of turning tool, the forming groove with wide and deep, especially the forming groove with inner hole, usually adopts the following two methods:

 

 

 

① Cut in two steps. Generally, the straight groove is first turned with a slotting cutter, and then turned with a forming cutter.

 

 

 

② Left and right tool shifting feed or oblique feed. When the groove of lathe is extremely wide and deep, the small sliding plate can be shaken to make the turning tool move slightly to the left or right while the middle sliding plate moves horizontally, and the grinding machine can form the left and right tool shifting feed of single side cutting; or when the middle sliding plate moves horizontally, the small sliding plate can be shaken to make the turning tool move slightly to the single side oblique feed along one direction. After the rough turning, a comprehensive amount shall be reserved, and then the fine turning tool shall be turned to the size.

 

Cutting of inclined groove:

 

 

 

Causes of failure of grinding machine spindle

 

 

 

(1) Electromagnetic disk is not magnetized

 

 

 

(2) Spindle activation switch fault

 

 

 

(3) Electromagnetic switch failure

 

 

 

(4) Control wire feed grinder

 

 

 

(5) Main shaft coupling damaged

 

 

 

(6) Spindle motor failure

 

 

 

Troubleshooting Countermeasures

 

 

 

(1) Activate the electromagnetic switch of the electromagnetic disk

 

 

 

(2) Replacement (lighting)

 

 

 

(3) Replace the electromagnetic switch

 

 

 

(4) Check or replace the control line circuit

 

 

 

(5) Replace the spindle coupling

 

 

 

(6) Replace the spindle switch

 

In fact, vibration occurs in the grinding process of grinder maintenance, which makes the relative position between the grinding wheel and the workpiece change periodically, and makes the workpiece surface produce vibration pattern, which seriously affects the processing quality and accuracy.

 

 

 

In order to improve the precision of the workpiece after grinding, in addition to eliminating the influence of the above factors, we must also pay attention to the reasonable selection of the positioning datum, the clamping method, the selection and correct repair of the grinding wheel, and the reasonable selection of the grinding amount and process method in the process of workpiece processing.

 

 

 

Anji round grinding machinery technology Co., Ltd. was founded in 2016, formerly Zhejiang Qinlong Machinery Technology Co., Ltd., mainly engaged in the research and development, production and sales of CNC horizontal axis round table surface grinder equipment. The belief of the company is innovation, honesty, thought and attitude.