Main technical parameters of 1F45 CNC machine tool Main structure and performance of 2F45 CNC machine tool F45 CNC CNC lathe has high precision and high efficiency mechanical performance, which can continuously cut the workpiece. The mechanical body and the power part are mechatronically designed, eliminating the need for some peripheral equipment.

The machine is fully enclosed, making it easier to recover the cutting fluid, which is automatically transported through the track to the chip removal point. The equipment is equipped with hydraulic system, lubricating oil cooling system and safety protection device. It has advanced functions such as automatic centering, automatic tool setting and automatic detection. Through the computer operation screen in front of the bed, the machine tool can be programmed to realize automatic processing.

2. 1 spindle spindle adopts two-point bearing. The front and rear ends are supported by extremely precise folding cylinder and high-speed rotating shaft. The front end of the spindle can be equipped with standard self-centering three-jaw hydraulic chuck and four-jaw chuck. A single head holds a workpiece of 500 kg weight.

2. 2 reciprocating table and V12 angle cutter reciprocating table (slide) reciprocating along the Z axis on the carriage is transmitted by a 3.5 kW motor to drive the T50 × 8 screw. The smooth surface of the machine tool is given to the smooth surface of the machine by sticking a wide synthetic resin plate, and the lubricating fluid is used to reduce the friction of the various parts of the machine tool to ensure the precision of cutting and stability. The lateral movement along the X-axis is transmitted by a 1.8 kW motor with a T 40×6 lead screw. The smooth surface of the machine tool is fed to the smooth surface of the table by development and heat treatment, and is attached to a synthetic resin plate.

The cutter head is a large 12-angle disc holder with a distance of 530 mm. It can be installed with up to 12 different external cutters and 4 different internal bore cutters. It can turn the inner and outer diameters and end faces separately and can withstand 80 kN. The impact of cutting forces.

2. The 3 tailstock rotary hydraulic top seat (tailstock) has a diameter of 160 mm and a maximum movement of 150 mm. The inner cone of the mandrel is MT NO.

5, can withstand strong cutting. The maximum thrust of the mandrel can reach 15 kN, and the fastening force of the top core can reach more than 130 kN. The movement of the mandrel, the fixing and moving operation of the top seat are controlled by the buttons of the operation panel (control screen) or numerically controlled M-type commands.

2. The sliding seat slide adopts integral casting structure, the rigidity is good, the rail surface is developed and heat treated, and the synthetic resin plate is pasted. The inclined surface of the guide rail is inclined by 45° to ensure that the center of the spindle is close to the operator to ensure the operator's processing. Fashion unloading parts are convenient, and the processed chips can easily slide down the 45° slope. The sliding seat is equipped with a precision 50×8 screw and a reciprocating table.

The sliding seat and the main body of the whole machine adopt a separate structure, which can reduce the influence of the thermal deformation during the machining on the accuracy of the sliding seat, and at the same time improve the structural processability of the sliding seat.

Application of 3F45 CNC Axle Lathe F45 CNC lathe is basically used for the machining of axles from introduction to installation and through three months of installation and commissioning. However, how to develop and utilize and expand its functions has become an important technical research project in the most suitable production of existing vehicles.

3. 1 Process The preparation of the axle on the CNC lathe is started from the semi-finished product. After the F45 CNC lathe is put into use, the machining process of the axle is initially determined as follows: Qi Duan, repair center hole, semi-finished vehicle? Three screw holes)? Fine car.

3. 2 Feasibility analysis (1) Qi end face, repair center hole. Because the length control of the CNC lathe machining is to automatically measure the length of the end face positioning (measuring the movement program with the G100 exhalation end face measurement), the machining of the axle is started. Therefore, the total length of the axle and the centering hole should be controlled first.

(2) Semi-finished car. The three-jaw chuck of the CNC lathe is a hydraulic automatic centering chuck that cannot be placed directly on the head of the bed. Since the axle is provided by semi-finished products, the coaxiality must be corrected. Therefore, when machining the axle, the one end of the axle, the dustproof seat and the arc R20 mm and R30 mm should be semi-finished. The coaxiality of the clip is basically guaranteed. At this time, the rest of the axle is processed.

(3) Drilling and tapping three screw holes. The drilling and tapping three screw holes are machined on a special machine tool, because the positioning of the axle on the special machine is based on the positioning of the journal in the V-shaped groove. The positioning reference is equipped with a profile hydraulic lathe (CH058). It is also best to use the CNC lathe to machine the three-threaded hole at the axle end of the axle. After semi-finishing, it is necessary to control the journal size when semi-finishing on a CNC lathe. . 20 + 0. 05 mm.

(4) Finishing. The finishing process mainly processes the R20 mm and R35 mm composite arcs of the journal and the dustproof seat, the wheel base and the brake disc to the process size, and achieves the accuracy requirements. The chuck of the CNC lathe is removed, the head of the bed is mounted on the top, and the top is centered, and the axle is processed by using the three screw holes and the tooling to transmit torque.

3. 3 Test results According to the above process, the F45 CNC lathe machining axle is tested. The experimental results are in accordance with the dimensional accuracy requirements before grinding. The surface roughness can reach 3. 2/, and the R55 mm arc does not need to be rolled onto the rolling bed.

4 Fault handling Some problems also occurred during the test, which were basically solved by taking corresponding measures.

(1) The lathe cutting tool is machined from right to left facing the operator. When machining A and B arcs, the A arc is very good, and the B arc is not good. The main reason for the analysis is that the tool compensation amount is different when processing uphill and downhill.

When the tool tip R causes the contact point to change up and down, a displacement difference occurs. By analyzing the blade tip to a pointed shape (relatively speaking), the poor connection can be eliminated.

The cutting edge R causes different arcing surfaces during cutting. (2) The F45 CNC lathe is equipped with a safety protection door (protective cover). The machine has an automatic protection program when it is introduced, that is, only the safety door is closed, the machine tool can only perform cutting processing. Parking, the security door can be opened. However, in the actual use process, due to the poor observation effect, especially when the iron filings are not good, only parking can be eliminated. By releasing the automatic protection program, the operation rules are regulated and standardized, and the problems in production can be solved in time to ensure safe and efficient production.

5 Conclusions and recommendations (1) The end face and the repair center hole are not arranged on the CNC lathe. The main consideration is to improve the use efficiency and machining accuracy of the CNC lathe.

(2) CNC lathe is the most reasonable for finishing the axle. It needs to be equipped with semi-finishing equipment for CNC lathes, but it is still used in CNC lathe for semi-finishing and finishing.

(3) Adopting CNC lathe processing to improve the dimensional accuracy and surface quality of the axle. Now it is necessary to consider how to improve the grinding precision of the wheel base and brake disc. It is recommended to purchase a CNC external cylindrical grinding machine to build a CNC axle lathe and form. Grinding machines, CNC cylindrical grinding machines for machining axles, and CNC vertical lathes (VCE1400/T 25-180) for machining wheel hubs are completely interchangeable for wheel-to-roll presses.

(Finish)

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