Improvement of panel fixing screws
1. The structure of the tooling work principle The structure of the tooling is made up of the broaching rod 1 ejector 3 1. The broaching rod 2. The cutter head 3. The ejector 4. The 蜾 mother 5. The 嫘 nail table 7. The working process of the workpiece is The workpiece 7 is fixed on the planing table 6, the broaching rod 1 is fixed on the planing tool holder, the grounded cutting head 2 is loaded into the cutter head groove of the broaching rod 1, and the ejector rod 3 is installed, and Fitted with the bevel between the cutter head 2. = The broach 1 is inserted into the finished hole of the workpiece 7, and the nut 4 is also fixed on the table 6 of the planer to adjust the distance between the ejector 3 and the screw end.
When the planer ram is reciprocated, the planer tool holder also drives the broach bar 1 to perform reciprocating broaching in the hole of the workpiece 7. The movement between the inclined surface of the ejector pin 3 and the inclined surface of the cutter head 2 is adjusted. The adjustable screw 5 of the distance is adjusted by hand, so that the ejector pin 3 is pushed up to the end of the adjustable screw 5, and the cutter head 2 is raised by the inclined surface of the ejector until the size of the long groove is finished.
The matching gap between the broaching rod 1 and the workpiece aperture should not be too large, and the broaching rod 1 should be subjected to heat treatment and quenching and tempering treatment.
Ensure that the symmetry value is less than half of the workpiece's required symmetry value.
276005褚 The slope of the self-supporting Wang Huajiang cutter head 2 and the inclined surface of the ejector rod 3 should be matched.
The broach 1 is lubricated during operation.
3, the effect and the simple structure of the tooling are easy to assemble.
The manufacturing cost of the tool can be greatly saved, and the workpiece can be formed by a cutter head when the groove depth is not large.
Xingtai Xinming Electric Co., Ltd. is the main part of the product, 2 are bent by thick cold-rolled steel plate and 2%, through 4 bars, 10 缧 nail connection 1. Because the box The electrical components are installed in the body. In the production test and the maintenance of the future, the panel needs to be disassembled frequently. When removing the screws, the screws should be removed from the panel. When the weight is 1 new installation, 4 nails should be solid. 1. Cabinet 2 The panel is assembled and inconvenient, and the 3.M5xlOftJ screw is easily lost. To this end, we have made the following improvements to the panel fixing screws. M. A self-made washer. 3. When installing the tenteen, first place the self-made washer on the fixed hole of the box, and the washer is raised upwards. Panel, screw 2 people screw, 4 screws should be tightened, so that the gasket will be black after flattening, Shandong Jinma Industry Group Co., Ltd. Rizhao 276800 Wang Jiji Zhao Changde Foreword In the machinery manufacturing industry, often encounter some special shapes Surface processing. 1 is the kind of parts of our company in the processing of products. The main process is the processing of 14 and 1 spherical surfaces. According to the traditional method, the special spherical turning tooling is designed to be turned on the lathe, but the spherical surface needs to pass one more pass during the turning process, and the spherical size processed is greatly affected by human factors, which is not suitable for mass production. In the final process of the part, we use the milling machine to mill out the spherical surface that meets the requirements and receive satisfactory results.
The milling principle and the main parameters are determined by the angle, the purpose of which is to make the axis of rotation of the milling head intersect with the center of the ball, and at the same time make the cutting edge pass during the rotation process. The 4 point spherical vertex and the tangent point or intersection of the 10,000 point spherical surface and the cylinder .
Before milling, first adjust the distance 5 between the two cutter heads to be 19.8, and make the two cutter heads 4 symmetrical with the centerline of the taper shank 5, fasten them with bolts 3, and then install the cutters specifically on the milling head of the milling machine. Press 2 to rotate the milling head at an angle = 45 to mount the workpiece 2 to the universal indexing head. Start the milling machine and rotate the universal indexing head during milling to mill the spherical surface that meets the requirements.
1. The principle of milling is to use the sphere, the contour of any section is a circle, for example, in the process of rotation, a circle is milled on the section of the station, and the workpiece is rotated at the same time during the milling process, and the complete spherical surface is milled. .
1. Indexing head 2, workpiece cutter head fixing bolt 4. Bit 5. The taper shank is stuck in the screw root groove.
If the panel is removed, the screws remain on the panel.
Cost, the screw is machined on the basis of the original standard parts; the gasket can be punched with the residual material. After practice, it not only improves production efficiency, but also is welcomed by users. Received date 20000202 Other spherical machining When the spherical size is different from the size of the adjacent cylinder, the spherical surface can be milled by milling machine according to 3. The angle and the cutter head distance 5 can be obtained by the following formula: 1. The tool rotation axis intersects the workpiece rotation axis at the center of the sphere 2, the two cutter heads respectively pass through the spherical vertex point and the spherical surface and the cylinder intersection point Dan.
Six conclusions As mentioned above, the design of the milling machine with the milling machine is simple and easy to manufacture. As long as the rotation angle of the milling head and the center distance of the cutter head are adjusted accurately, the spherical processing size is easy to ensure, the operation is simple, the processing efficiency is high, and it is suitable for batches. produce.
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