How to choose a steel bending machine:
There are two types of steel bending machines: mechanical and hydraulic. Mechanical steel bending machines are divided into symmetrical and asymmetrical types. Sheet metal can be rolled into a specific range of round, curved and conical workpieces. The manufacturing process of steel bar bending machine is as follows:
1. Benchmark test: When using the processing technology, always process the positioning reference surface first. That is, the reference is processed first. Spindle machining of rebar bending machines is always the first method to drill a center hole in the end face to prepare positioning data for the next process.
2. Deep hole processing placement: It is best to place deep hole processing at the back so that the center hole can be processed and used multiple times. However, deep hole drilling is rough machining, with large allowance, large heat generation, and large deformation. It is difficult to maintain the machining accuracy and cannot be accomplished overnight. In general, the deep hole drill is placed after the outer ring is rented, so the rebar bending machine has a more accurate journal as a positioning reference for the construction of the steady rest, and the drilling can easily ensure the uniformity of the spindle wall thickness.
3. Installation of secondary surface processing of steel bar bending machine: The secondary surface processing of splines, keyways, screws, etc. on the main shaft is usually carried out after the outer circle finish turning or rough grinding and before fine grinding. Grinding the outer circle. If the keyway is milled before finishing, it is easy to generate vibration due to intermittent cutting during finishing, which affects the machining quality, easily damages the tool, and it is difficult to control the depth of the keyway. Otherwise, the accuracy of the main surface of the rebar bending machine will be affected.
4. First process the outer circle, then process the outer circle, then process the inner hole, and place the outer circle: first outside and then inside, first big and then small. For example, install the tapered hole on the spindle after fine grinding the journal. When machining the stepped outer ring, the large diameter is machined first, and then the small diameter is machined to avoid prematurely reducing the stiffness of the workpiece. When machining progressively deep holes, machine the larger diameter first and then machine the smaller diameter. Therefore, it is convenient to use a rebar bending machine with a relatively rigid drilling tool.
