1、檢查機器處于水平狀態(tài)。

1, check the machine is in the level state.

2、打開機器上蓋和后蓋，拆掉大杠桿后方固定塊的兩個固定螺栓，拿掉固定塊和大杠桿下方的固定支撐塊；松開砝碼固定壓板上的兩個螺帽，拿出兩個鉤頭螺釘后，從機器后方取出砝碼支撐塊；調(diào)整好法碼組，使砝碼組上的圓柱銷落入砝碼托架的溝槽中。拆掉小杠桿上的緊固繩。

2, open the top and rear cover of the machine, remove two fixed bolts of the large lever rear fixed block, remove the fixed support block under the fixed block and the large lever; unlock the two nuts on the weight fixed pressure plate, take out two hook head screws, and remove the weight support block from the rear of the machine; adjust the code group to make the circle on the weight group. The pin falls into the grooves of the counterpoise bracket. Remove the fastening rope on the small lever.

3、檢查硬度計是否在工作狀態(tài)，

3. Check whether the hardness meter is working or not.

1）表盤的大指針是否垂直向上，小指針接近黑點位置。（可通過小杠桿上方調(diào)整塊中間的調(diào)零螺釘調(diào)整指針位置，先松開調(diào)零螺釘?shù)穆萁z，再調(diào)節(jié)螺釘左右旋轉(zhuǎn)使表盤指針處于垂直向上位置。）

1) whether the big pointer of the dial is vertical upward, and the small pointer is close to the black spot position. (we can adjust the position of the pointer by the zero adjusting screw in the middle of the adjustment block of the small lever, first unscrew the screw of the zero adjusting screw, and then adjust the screw to make the dial pointer in the vertical position.)

2）檢查卸荷手柄應處于卸荷位置。

2) check the unloading handle should be in the unloading position.

3）檢查法碼組上的圓柱銷落入砝碼托架的溝槽中，位置是否垂直向下。

3) check that the pin on the code group falls into the groove of the weight bracket, and whether the position is vertical downward.

4）檢查絲杠上端面與工作臺大平面及工作臺裝配面處無毛刺時，裝上工作臺，注意工作要與絲杠配合好，不能有間隙，工作臺下表面不能碰到絲杠保護套。

4) check the end face of the screw rod and the work table and the assembly surface without burr, install the work table, pay attention to the work with the screw, can not have clearance, the surface of the working table can not meet the screw protection sleeve.

5）檢查三圈半行程是否正確，松開主軸座上的兩個頂絲，調(diào)整主軸座內(nèi)的形程螺帽，大于三圈半順時針調(diào)整，小于三圈半逆時針調(diào)整。

5) check whether the three circle and half stroke are correct, release two top wire on the spindle seat, adjust the shape screw in the spindle seat, more than three cycles and half clockwise adjustment, less than three cycles and half counter clockwise adjustment.

4、換金剛石壓頭，旋轉(zhuǎn)變荷手柄到150KG，分別將HRC硬度塊20度和60度，塊在工作臺上平推幾下，然后轉(zhuǎn)動手輪使工作臺緩慢上升，并將壓頭頂起，中途不允許停頓或倒轉(zhuǎn)，直到短指針指向紅點，長指針順時針旋轉(zhuǎn)三圈垂直上指，允許相差±5個刻度，若超過5個刻度，此點應作廢，重新實驗。

4, replace the diamond press head, rotate the change load handle to 150KG, respectively HRC hardness block 20 degrees and 60 degrees, block on the worktable flat push a few, and turn the handwheel to slow up the worktable, and press the head up, not allowed to stop or reverse, until the short pointer to red point, long pointer clockwise three circles perpendicular to the finger, If the scale is allowed to vary by 5 marks, if it exceeds 5 scales, this point should be invalidated and retested.

5、旋轉(zhuǎn)活動表盤，使長指針與C、B之間長刻線對齊。

5, rotate the movable dial to make the long pointer aligned with the long line between C and B.

6、向前緩慢拉動機壁右側(cè)的加荷手柄，這時可見卸荷手柄前擺，大指針逆時針旋轉(zhuǎn)，指針倒轉(zhuǎn)到緩慢停止時間4±2秒，這時緩慢推回卸荷手柄，此時指針所指刻度即為硬度值。若20度和60度硬度值都偏高或偏低，可調(diào)整小杠桿上面的硬度調(diào)整塊，硬度之高往后調(diào)，反之前調(diào)。如果硬度值兩掙，要檢查小杠桿與小杠桿座左右無間隙，小杠桿與表盤吊環(huán)左右無間隙。大杠桿與砝碼吊環(huán)兩側(cè)是否有摩擦。檢查調(diào)零螺釘尖端摩擦。

6, the loading handle on the right side of the wall of the motive force is slowly pulled forward, the front swing of the unloading handle is seen, the big pointer revolving counter clockwise, the pointer turned to the slow stop time of 4 + 2 seconds, and then the unloading handle is slowly pushed back, and the scale of the pointer is the hardness value at this time. If the hardness values of 20 degree and 60 degree are all high or low, the hardness adjustment block on the small lever can be adjusted, and the hardness will be adjusted later, otherwise the front adjustment will be made. If the hardness value is two, make sure that there is no gap between the small lever and the small lever seat, and the small lever has no gap with the dial ring. Whether there is friction between the two sides of the big lever and the counterpoise ring. Check the tip friction of the zero screw.