The steps of making the workpiece with a CNC lathe, the steps of lathe processing

1. Analyze the drawings and process treatment of parts.

According to the drawing, the geometric shape and size of the part, the technical requirements are analyzed, the content and requirements of the processing are clarified, the processing scheme is determined, the processing sequence is determined, the fixture is designed, the tool is selected, the reasonable tooling route is determined and the reasonable cutting amount is selected.

At the same time, the function of the CNC system and the ability of the CNC machine tool itself should be brought into play, and the correct selection of tool setting points and cutting methods should be used to minimize auxiliary time such as tool change and indexing.

2. Mathematical processing.

Before programming, according to the geometric characteristics of the part, a workpiece coordinate system is established, and the function of the numerical control system is based on the requirements of the part drawing, the processing route is formulated, and the motion trajectory of the tool is first calculated on the established workpiece coordinate system. For parts with simple shapes, such as parts composed of straight lines and arcs, you only need to calculate the coordinate values of the start and end points of the geometric elements, the center of the arc, the intersection of two geometric elements, or the tangent points.

3. Write a list of parts programs.

After the processing route and process parameters are determined, the part program list is prepared according to the specified ** and program section format specified by the numerical control system.

4. Program input.

5. Program verification and first article test cutting.

1.Select a material.

2.Choose a tool and fixture, and consider the clamping method.

3.It is programmed according to the drawings and entered into the machine.

4.Try to cut the knife.

5.Processing, measurement qualified, completed. ok。

The steps of lathe processing Lathe processing step 1, turn on the power, start the switch of the god trouser machine, and idle for 3-5 minutes at the normal speed; 2. Clamp the workpiece, and the lathe must be in the neutral state when clamping the workpiece; 3. After confirming that the workpiece is clamped, the lathe is converted from neutral to normal gear, and the lathe processing is started; 4. After the lathe processing is completed, turn off the lathe, and when the lathe is completely stopped, the gear can be changed to neutral before the workpiece can be retrieved; 5. Clean up the equipment and site after the car parts are completed. Precautions: 1. It is strictly forbidden for non-staff to operate the machine tool.

2. It is strictly forbidden to touch the tool, the rotating part of the machine tool or the rotating workpiece during operation. 3. Do not use the emergency stop, if you use the button to stop in case of emergency, you should check it again according to the pre-start regulations of the machine tool. 4. It is not allowed to use feet instead of hand to operate the handle of the guide rail surface, screw rod, smooth rod, etc. of the pedal lathe.

5. The inner wall has sand holes, shrinkage holes or parts with keyways, and the inner hole is not allowed to be scraped with triangular scraping. 6. The pressure of the compressed air or liquid of the hydraulic chuck after pneumatic must reach the specified value before it can be used. 7. When turning slender workpieces, when the length of the two sides in front of the head of the bed exceeds 4 times the diameter, the center should be used according to the process regulations.

Steady rest or heel frame support. When sticking out behind the head of the bed, guards and warning signs should be added. 8. When cutting brittle metals or cutting easy to splash (including grinding), a protective baffle should be added, and the operator should wear protective glasses.

Step 1: Must be a good craftsman.

CNC machine tools integrate drilling, milling, boring, reaming, tapping and other processes. The technical literacy of the technicians is very demanding. CNC program is the process of using computer language to reflect the processing process.

Craftsmanship is the foundation of programming. If you don't know the process, you must not be able to program. In fact, when we choose the profession of machining, it means that the early stage of the industry is hard and rough.

The little basic knowledge you learn in college is very little to meet the needs of the factory. The engineer of machining is, to some extent, an experiencer. Therefore, a lot of time must be spent with workers, dry lathes, milling machines, grinding machines, machining centers, etc.; Then in the office, the process is compiled, the material consumption is estimated, and the quota is calculated.

You must be familiar with the performance of various types of machines and the skill level of the workshop masters. In this way, after 2-3 years of practice, you can basically become a qualified craftsman. From my personal experience, I would advise young college students who have just started working to learn from the workers and masters with an open mind, and once they can pass on their decades of experience to you, you will avoid many detours.

Because these experiences cannot be learned in books, the selection of process is a comprehensive consideration of equipment capabilities and personnel technical capabilities. Without the support and trust of our employees, it would be impossible to become a good craftsman.

Step 2: Proficient in CNC programming and the application of computer software.

I think it's easier to do this, and there are dozens of programming instructions, and all kinds of systems are similar. Generally, it takes 1-2 months to get very familiar. The automatic programming software is a little more complicated and requires learning modeling.

But for people with a good CAD foundation, it is not difficult. Also, if you're programming by hand, the basics of analytic geometry should be good! Readers are the most comfortable with the learning of this knowledge.

Step 3: Be able to operate CNC machine tools proficiently.

It takes 1-2 years of learning, and the operation is to pay attention to the feel, beginners, especially college students, know how to do it, but the hand just doesn't listen to the call. In this process, it is necessary to learn: the operation mode of the system, the installation of fixtures, the alignment of parts datum, tool setting, setting zero offset, setting tool length compensation, radius compensation, tool and tool holder loading, unloading, tool grinding, parts measurement (proficient in the use of vernier calipers, microcard, dial gauge, dial gauge, inner diameter lever.

table) and so on. The most reflective of the level of operation are: horizontal machining center and large gantry (moving beam, top beam) machining center.

The practice of operation requires understanding! Sometimes there is really a kind of artistic conception of "leisurely heart, wonderful and difficult to say"!

In the CNC workshop, you can calm down and practice well! Generally speaking, the process from the processing of the first part to the qualified machining accuracy requires the CNC programming technician to complete it himself. If you can't operate the machine skillfully, you won't be able to pass this level.

See the diagram to program the tool to perform machining.

1. Familiar with the operation panel of CNC machine tools. Familiarize yourself with the function and location of each control button. 2.

After turning on the machine, let the CNC machine return to the original point. (Press the back button of the control panel, then press the start button to start). 3.

Place the machined workpiece on the table. (Small workpieces can be glued together, and large workpieces need to be fixed with a platen.) The bottom of the workpiece should be flat).

4.Then set the coordinate system. The coordinate system refers to the coordinate position of the workpiece to be machined.

Generally, when machining the workpiece in four directions, the workpiece coordinates can be set by touching the tool periphery, and then the coordinate values can be entered into the control panel. 5.The next step is the Z-axis tool setup.

Select the appropriate machining tool and set the tool on the table with a tool holder. For example, the tool setting on the top of the workpiece needs to set a relative height value. After reading the value, the Z-axis value is entered into the control panel.

6.Finally, the machining program is transferred, the machining speed is set, and then the machining is processed.

It is not an empty concept, it needs to be combined with the workpiece, with the company's equipment, with the skills of the lathe master, and with the company's fixtures.

The process flow of lathe processing is: material preparation, rough turning end face, punching center hole, and turning shape. For some parts with complex processes, rough turning, heat treatment quenching and tempering, and fine turning are also added.

(1) Turn on the main power switch of the electrical cabinet of the machine tool, turn on the main power supply of the machine tool, the power indicator light will be on, and the cooling fan of the electrical cabinet will be started;

2) Press the [on] button on the machine tool operation panel to start the system power (press the [off] button when the machine is turned off) to power on the CNC system, and wait for the display to work and display the initial screen;

3) Release the [Emergency Stop] button (press the [Emergency Stop] button when the machine is turned off) to power on the servo system.

4) Shutdown is done in reverse order.

Put the working mode in the position of the [Return to Zero] button, the indicator light of the key is on, press the [+X] key, and the table will move to the reference point in a rapid feed mode. When the reference point is returned, the "X Zero" indicator lights up. Press the [+Z] key to return to the reference point in the Z direction.

2.MDI mode back to the reference point.

1) Select the mode of machine operation panel and select the [MDI] button;

2) Select the [prog] button of the program function of the CNC system panel;

3) Select the CNC panel to insert the [INSERT] button, and enter the command "G28 U0 W0";

4) Press the cysle start button to start the program back to zero.

Please click Enter a description.