1 Product requirements
The training platform is based on the real object of the driving system of the vehicle, including detection panel, motor driving system, gear switch, acceleration control device, DC contactor, etc., which can truly show the composition structure and working process of the driving system of new energy vehicles.
2 Functional requirements
a. The real and operable new energy vehicle drive system is connected with other platforms of the system to complete the composition structure and working process of the new energy vehicle drive system.
b. The measuring panel of the training platform is painted with color spray circuit diagram, which is made of 8mm thick high-strength acrylic plate. It has the characteristics of large temperature difference resistance, wear resistance, moisture resistance, corrosion resistance, not easy to deformation, long service life, bright color and not easy to fade. The panel is printed with color circuit diagram that will never fade, and the surface is sprayed with varnish; Students can intuitively compare the circuit diagram and the real object of the electric vehicle drive system to understand and analyze the working principle of the control system.
c. A detection terminal is installed on the panel of the training platform, which can directly detect the electrical signals of the pins of each control unit, such as resistance, voltage, current, frequency signals, etc.
3 Process standard: the circuit diagram board has the function of circuit analysis, the graphic circuit is made of acrylic plate by laser spraying, and the frame is pressed and inlaid with aluminum alloy frame, which is beautiful and generous. The base of the bench is assembled with national standard aluminum profiles. The base is equipped with universal moving casters with reasonable line distribution. The electrical installation is organized and implemented in strict accordance with GB national electrical industry standards.
4 Teaching function:
Skills training program:
a. Training items for disassembly and assembly of motor assembly;
b. Training project on disassembly and assembly of mechanical transmission assembly;
c. Be familiar with the name, structure and principle of various parts;
Testing teaching items:
a. Driving system working signal voltage detection teaching project
b. Teaching project of driving motor working speed signal detection
c. Drive system fault diagnosis and detection teaching project
d. Driving motor temperature signal detection teaching project
5 Reference pictures (pictures are for reference only, subject to the real object):
6 Supporting virtual reality integrated teaching system
a. Teaching effect and concept: the automobile virtual reality integration integrated teaching system aims to make theoretical teaching and practical teaching interact and integrate. On the 1 hand, improve the practical ability of theoretical teachers, train their theoretical level, and cultivate a high-quality teaching team. On the other hand, teachers integrate theoretical knowledge into practical teaching, let students learn by doing, understand theoretical knowledge and master skills in learning and practice, and break the boundary between teachers and students. Teachers are among and around students. This way can greatly stimulate students’ enthusiasm for learning, enhance students’ interest in learning, and actively summarize students while learning and practicing, It can achieve twice the result with half the effort. The integration of theory and practice teaching software breaks through the disconnection between theory and practice, and the teaching links are relatively concentrated. It emphasizes giving full play to the leading role of teachers. By setting teaching tasks and teaching objectives, teachers and students can teach, learn and do at the same time, build a quality and skill training framework in the whole process, enrich classroom teaching and practical teaching links, and improve teaching quality. In the whole teaching process, theory and practice are carried out alternately, and intuition and abstraction appear alternately. There is no fixed principle of “reality before reason” or “reason before reality”, but there is reality in reason and reason in reality. Highlight the cultivation of students’ practical ability and professional skills, and fully mobilize and stimulate students’ interest in learning.
b. Composition: the virtual reality integration teaching platform is composed of wireless remote communication module, training system and theory reality integration teaching software.
c. Wireless remote communication function: it has industrial design and is applicable to all kinds of teaching equipment. It has built-in software and hardware watchdog and does not crash or drop the line. Support transparent data transmission. Communication mode: WiFi hotspot based on IEEE802.11 standard is adopted, effective communication distance: open space: 80m, interface rate: 150m, frequency range: 2.412ghz-2.484ghz.
4. Fault system
4.1 the fault system adopts the way of graphical fault setting, and is configured with standard circuit diagram, which generally corresponds to the panel diagram of training equipment. Teachers can directly set or clear faults through the circuit diagram. It has the characteristics of intuitive operation and concealed fault setting.
4.2 teachers can set faults through single point fault setting, combined fault setting, assessment fault setting and other methods, and send fault setting instructions to the training equipment remotely through WiFi. Students can measure the voltage and resistance of relevant systems of the training equipment through mechanical instruments multimeter, and use oscilloscope to observe the waveform curves of different signal amplitudes varying with time, It can also be used to test various electric quantities, such as voltage, current, frequency, phase difference and adjustment amplitude. At the same time, it can read fault codes and analyze data flow through diagnostic equipment to judge fault points, analyze their causes and eliminate them, which greatly improves the students’ initiative and judgment skills. In the fault setting stage, teachers can conduct routine assessment on the troubleshooting process of students by limiting the troubleshooting time, which is helpful to formulate effective training measures, so as to improve the results of Vocational and technical training.
4.3 the interface of the fault system is clear and easy to understand. The fault status identification has options such as “open circuit”, “virtual connection”, “release” and “close” respectively to truly simulate the typical fault phenomena of the training equipment.
4.4 the fault system does not have the memory function by default to avoid stopping in the middle of the training and forgetting to cancel the fault, which will cause hard fault to the training equipment and affect the normal operation and later training.
The Different Types of Splines in a Splined Shaft
A splined shaft is a machine component with internal and external splines. The splines are formed in 4 different ways: Involute, Parallel, Serrated, and Ball. You can learn more about each type of spline in this article. When choosing a splined shaft, be sure to choose the right 1 for your application. Read on to learn about the different types of splines and how they affect the shaft’s performance.
Involute splines in a splined shaft are used to secure and extend mechanical assemblies. They are smooth, inwardly curving grooves that resist separation during operation. A shaft with involute splines is often longer than the shaft itself. This feature allows for more axial movement. This is beneficial for many applications, especially in a gearbox.
The involute spline is a shaped spline, similar to a parallel spline. It is angled and consists of teeth that create a spiral pattern that enables linear and rotatory motion. It is distinguished from other splines by the serrations on its flanks. It also has a flat top. It is a good option for couplers and other applications where angular movement is necessary.
Involute splines are also called involute teeth because of their shape. They are flat on the top and curved on the sides. These teeth can be either internal or external. As a result, involute splines provide greater surface contact, which helps reduce stress and fatigue. Regardless of the shape, involute splines are generally easy to machine and fit.
Involute splines are a type of splines that are used in splined shafts. These splines have different names, depending on their diameters. An example set of designations is for a 32-tooth male spline, a 2,500-tooth module, and a 30 degree pressure angle. An example of a female spline, a fillet root spline, is used to describe the diameter of the splined shaft.
The effective tooth thickness of splines is dependent on the number of keyways and the type of spline. Involute splines in splined shafts should be designed to engage 25 to 50 percent of the spline teeth during the coupling. Involute splines should be able to withstand the load without cracking.
Parallel splines are formed on a splined shaft by putting 1 or more teeth into another. The male spline is positioned at the center of the female spline. The teeth of the male spline are also parallel to the shaft axis, but a common misalignment causes the splines to roll and tilt. This is common in many industrial applications, and there are a number of ways to improve the performance of splines.
Typically, parallel splines are used to reduce friction in a rotating part. The splines on a splined shaft are narrower on the end face than the interior, which makes them more prone to wear. This type of spline is used in a variety of industries, such as machinery, and it also allows for greater efficiency when transmitting torque.
Involute splines on a splined shaft are the most common. They have equally spaced teeth, and are therefore less likely to crack due to fatigue. They also tend to be easy to cut and fit. However, they are not the best type of spline. It is important to understand the difference between parallel and involute splines before deciding on which spline to use.
The difference between splined and involute splines is the size of the grooves. Involute splines are generally larger than parallel splines. These types of splines provide more torque to the gear teeth and reduce stress during operation. They are also more durable and have a longer life span. And because they are used on farm machinery, they are essential in this type of application.
A Serrated Splined Shaft has several advantages. This type of shaft is highly adjustable. Its large number of teeth allows large torques, and its shorter tooth width allows for greater adjustment. These features make this type of shaft an ideal choice for applications where accuracy is critical. Listed below are some of the benefits of this type of shaft. These benefits are just a few of the advantages. Learn more about this type of shaft.
The process of hobbing is inexpensive and highly accurate. It is useful for external spline shafts, but is not suitable for internal splines. This type of process forms synchronized shapes on the shaft, reducing the manufacturing cycle and stabilizing the relative phase between spline and thread. It uses a grinding wheel to shape the shaft. CZPT Manufacturing has a large inventory of Serrated Splined Shafts.
The teeth of a Serrated Splined Shaft are designed to engage with the hub over the entire circumference of the shaft. The teeth of the shaft are spaced uniformly around the spline, creating a multiple-tooth point of contact over the entire length of the shaft. The results of these analyses are usually satisfactory. But there are some limitations. To begin with, the splines of the Serrated Splined Shaft should be chosen carefully. If the application requires large-scale analysis, it may be necessary to modify the design.
The splines of the Serrated Splined Shaft are also used for other purposes. They can be used to transmit torque to another device. They also act as an anti-rotational device and function as a linear guide. Both the design and the type of splines determine the function of the Splined Shaft. In the automobile industry, they are used in vehicles, aerospace, earth-moving machinery, and many other industries.
The invention relates to a ball-spinned shaft. The shaft comprises a plurality of balls that are arranged in a series and are operatively coupled to a load path section. The balls are capable of rolling endlessly along the path. This invention also relates to a ball bearing. Here, a ball bearing is 1 of the many types of gears. The following discussion describes the features of a ball bearing.
A ball-splined shaft assembly comprises a shaft with at least 1 ball-spline groove and a plurality of circumferential step grooves. The shaft is held in a first holding means that extends longitudinally and is rotatably held by a second holding means. Both the shaft and the first holding means are driven relative to 1 another by a first driving means. It is possible to manufacture a ball-splined shaft in a variety of ways.
A ball-splined shaft features a nut with recirculating balls. The ball-splined nut rides in these grooves to provide linear motion while preventing rotation. A splined shaft with a nut that has recirculating balls can also provide rotary motion. A ball splined shaft also has higher load capacities than a ball bushing. For these reasons, ball splines are an excellent choice for many applications.
In this invention, a pair of ball-spinned shafts are housed in a box under a carrier device 40. Each of the 2 shafts extends along a longitudinal line of arm 50. One end of each shaft is supported rotatably by a slide block 56. The slide block also has a support arm 58 that supports the center arm 50 in a cantilever fashion.
Sector no-go gage
A no-go gauge is a tool that checks the splined shaft for oversize. It is an effective way to determine the oversize condition of a splined shaft without removing the shaft. It measures external splines and serrations. The no-go gage is available in sizes ranging from 19mm to 130mm with a 25mm profile length.
The sector no-go gage has 2 groups of diametrally opposed teeth. The space between them is manufactured to a maximum space width and the tooth thickness must be within a predetermined tolerance. This gage would be out of tolerance if the splines were measured with a pin. The dimensions of this splined shaft can be found in the respective ANSI or DIN standards.
The go-no-go gage is useful for final inspection of thread pitch diameter. It is also useful for splined shafts and threaded nuts. The thread of a screw must match the contour of the go-no-go gage head to avoid a no-go condition. There is no substitute for a quality machine. It is an essential tool for any splined shaft and fastener manufacturer.
The NO-GO gage can detect changes in tooth thickness. It can be calibrated under ISO17025 standards and has many advantages over a non-go gage. It also gives a visual reference of the thickness of a splined shaft. When the teeth match, the shaft is considered ready for installation. It is a critical process. In some cases, it is impossible to determine the precise length of the shaft spline.
The 45-degree pressure angle is most commonly used for axles and torque-delivering members. This pressure angle is the most economical in terms of tool life, but the splines will not roll neatly like a 30 degree angle. The 45-degree spline is more likely to fall off larger than the other two. Oftentimes, it will also have a crowned look. The 37.5 degree pressure angle is a compromise between the other 2 pressure angles. It is often used when the splined shaft material is harder than usual.