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How do you choose between linear rails and hard rails?

We often hear that CNC machining centers are divided into hard and linear rails. When customers choose a machining center, they ask: Which is better? What is the difference between them? What is a hard rail? What is a linear rail? Hard rails refer to a cast part where the guide rail and machine body are integrated, and the guide rail is machined based on the casting. The shape of the guide rail is cast on the machine body and processed into a guide rail through quenching and grinding. There are also cases where the body and guide rail are not integrated, such as the embedded steel guide rail, which is nailed to the body after processing. Linear rails usually refer to rolling guides, commonly used in linear modules in the machine tool industry today. We often refer to this type of component as "linear guides". The linear guide rail is divided into two parts: the slide rail and the slide blocks. The slide blocks have internally circulating balls or rollers, and the length of the slide rail can be customized. It is a modular component that is a standardized and serialized individual product produced by specialized manufacturers. It can be installed on machine tools and disassembled and replaced when worn out. Many machine tools in the precision machining field use high-precision line rails as machine tool guides, greatly ensuring the machining accuracy of the machine tools. Is it good to use hard rails for machining centers? Are linear rails better? Actually there is no such thing as good or bad between hard and linear rails, only whether they are suitable or not because their emphasis is different. Let's take a look at their respective advantages and disadvantages.

The difference between a vertical machining center and a horizontal machining center

A vertical machining center refers to a machining center where the spindle is in a vertical state. Its structural form is mostly a fixed column, and the worktable is rectangular without indexing and rotation functions. It is suitable for machining disc, sleeve, and plate parts. A vertical machining center generally has three linear motion coordinate axes and can install a rotating table along the horizontal axis on the worktable, commonly known as a four-axis machining center in the industry. It is mostly used for machining spiral line parts. Vertical machining centers are easy to install, operate, observe machining conditions, debug programs, and have a wide range of applications. However, due to the height of the column and the limitations of the tool-changing device, it can't process parts that are too high. When machining cavities or concave surfaces, chips are not easily discharged, and in severe cases, they can damage the tool, destroy the already machined surface, and affect the smooth progress of machining. A horizontal machining center is a machining center with a horizontal spindle, usually equipped with an automatic indexing rotary worktable. It generally has 3-5 motion coordinates, commonly consisting of three linear and one rotary motion coordinate. After one clamping, the workpiece completes the machining of the other four surfaces except for the mounting and top. It is most suitable for machining box-type parts. Compared with vertical machining centers, horizontal machining centers have convenient chip removal and are beneficial for machining, but they have complex structures and higher prices.

‌What is the difference between 5-axis linkage machining and 3+2 positioning machining?

What is 3+2 positioning machining? The principle of 3+2 positioning machining is essentially the implementation of a three-axis function at a specific angle (i.e. "positioning"). Simply put, it means that after the machine tool rotates the angle, it is still machined in the ordinary three-axis way. What is 5-axis linkage machining? According to ISO regulations, when describing the motion of CNC machine tools, a left-hand Cartesian coordinate system is used; The coordinate axis parallel to the main axis is defined as the Z axis, and the rotational coordinates around the X, Y, and Z axes are A, B, and C, respectively. Typically, five-axis linkage refers to the linear interpolation motion of any five coordinates in X, Y, Z, A, and B.

SL SERIES MOLD AND PARTS INTEGRATED MACHINING CENTER MACHINE

SL SERIES MOLD AND PARTS INTEGRATED MACHINING CENTER MACHINE High rigidity and heavy cutting--The ideal tool for large mold machining Two-line-one-hard/X-axis 2 linear guides/Y-axis 4 linear guides/Z-axis flat-face rectangular guide

Two-line-one-hard machining center - ideal for processing medium and large molds

The two-line-one-hard machining center adopts a dual Y-axis design. The so-called two-line-one-hard machining center usually refers to a machining center that uses linear sliders for the X and Y axes and a hard rail for the Z axis and has local characteristics of both linear slider and hard rail machining centers. It can achieve linear movement in two directions, improving the processing range and flexibility. The high-rigidity gantry structure can ensure stability under high-speed and heavy-duty cutting conditions, and reduce vibration and thermal deformation. Two-line-one-hard machining center is a machining center machine specifically used for manufacturing molds. In addition, the machining center is usually equipped with high-performance CNC systems and high-precision workbenches to ensure high-precision machining performance.

What parts are suitable for machining with a three-axis machining center machine?

What parts are suitable for machining with a three-axis machining center machine? The commonly used three-axis machining centers are divided into two types: vertical machining centers and horizontal machining centers. A vertical spindle is called a vertical machining center, and a horizontal spindle is called a horizontal machining center. The fundamental difference between the two types of machining centers is that the most effective machining surface for vertical machining centers (three-axis) is the top surface of the workpiece. In contrast, the rotary worktable for horizontal machining centers can complete the four-sided machining of the workpiece.