Machine tool ram with support structure

Abstract

The application discloses a machine tool ram with a support structure and relates to the technical field of numerical control machine tools.The machine tool ram with the support structure comprises a slide saddle, a ram and a machine tool ram support structure body.The ram is arranged in the inner cavity of the slide saddle and can run up and down in the inner cavity of the slide saddle.The machine tool ram support structure body comprises a ram support assembly, a ram running guide mechanism, a driving hydraulic cylinder and a safety protection mechanism.The ram running guide mechanism is distributed on the two sides of the slide saddle and slides up and down relative to the slide saddle.The ram support assembly is in a ring structure and is fixedly connected with the ram and the ram running guide mechanism in a ring embracing mode.The driving hydraulic cylinder is provided with two driving hydraulic cylinders which are connected to the two sides of the slide saddle.When the ram extends out of the slide saddle to a long position, the driving hydraulic cylinder drives the ram running guide mechanism and the ram support assembly to run downward, so that the torsion and bending deformation of the ram are reduced, the rigidity of the ram part is improved, and the machining precision and machining capacity of the machine tool are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and more specifically to a machine tool slide with a support structure. Background Technology

[0002] The machine tool spindle is the direct carrier for mounting the cutting tool. The spindle is mounted on the machine tool ram, which in turn is mounted on the saddle. These are the direct components for the machine tool's Z-axis movement. During machining, the spindle drives the cutting tool to rotate and cut, while the cutting tool transmits the cutting torque and feed force to the spindle.

[0003] Since the spindle is mounted on the ram, and the ram bears all the forces transmitted by the spindle, the ram's resistance to torsional and bending deformation directly affects the machine tool's machining capabilities and accuracy. During machining, the ram needs to extend beyond the saddle and move along the Z-axis. When the ram extends too far beyond the saddle, the saddle's support point on the ram is too far from the spindle's stress point at the lower end of the ram. In this case, the ram will experience greater torsional and bending deformation due to the cutting forces. To minimize ram torsion and deformation, the cross-sectional dimensions of the ram are currently increased to improve its rigidity.

[0004] The shortcomings of the above-mentioned existing technical solutions are: although the above solutions improve the rigidity of the slide to a certain extent, they waste a lot of resources on the overall machining capabilities of the machine tool, are costly, and do not fully utilize the machining performance of the whole machine. Summary of the Invention

[0005] The purpose of this invention is to provide a machine tool slide with a support structure to solve the technical problems of torsion and bending when the machine tool slide is overhanged too long in the prior art.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution:

[0007] A machine tool ram support structure includes a saddle, a ram, and a machine tool ram support structure body. The ram is disposed inside the inner cavity of the saddle and is slidably connected to the saddle. The machine tool ram support structure body includes a ram support assembly, a ram running guide mechanism, a drive hydraulic cylinder, and a safety protection mechanism. The ram running guide mechanism is distributed on both sides of the saddle and slides up and down relative to the saddle through the cooperation of linear guide rails and sliders. The ram support assembly has a ring structure, encircling the ram, with the ram passing through the entire ram support assembly. The ram running guide mechanism is fixedly connected to the ram support assembly, and the ram support assembly runs linearly relative to the ram. Two drive hydraulic cylinders are provided and respectively connected to both sides of the saddle. The ends of the extension rods of the drive hydraulic cylinders are fixedly connected to both sides of the ram support assembly, and the ends of the drive hydraulic cylinders away from the extension rods are fixedly connected to the saddle. The safety protection mechanism is located above the saddle.

[0008] As a further aspect of the present invention: linear guide rails are respectively provided on both sides of the slide saddle, and a plurality of sliders are provided on one side of the linear guide rails, and the sliders are fixedly connected to the slide saddle. The other side of the linear guide rails is fixedly connected to the slide ram running guide mechanism, and the slide ram running guide mechanism is distributed on both sides of the slide saddle through the linear guide rails and the sliders.

[0009] As a further aspect of the present invention: the sides of the slide are provided with grooves, and the sides of the slide are octagonal.

[0010] As a further aspect of the present invention: a plurality of inserts are fixedly installed on the inner side of the ram support assembly, the inner side of the ram support assembly is a plastic-coated surface, the inserts are inclined, and the inserts are in contact with the outer side of the ram.

[0011] As a further embodiment of the present invention: the safety protection mechanism includes a cylinder bracket and a cylinder, the cylinder bracket is fixedly installed on the upper end of the slide saddle, the cylinder is set on the cylinder bracket, a shaft is set in the middle of the cylinder, and a bracket is set on the upper end of the slide ram running guide mechanism, and a hole is opened on the bracket.

[0012] The beneficial effects of this invention are:

[0013] 1. This invention provides support for the slide when it extends a long distance beyond the saddle by setting up a slide support assembly and a slide running guide mechanism, thereby increasing the slide's torsional and bending rigidity, reducing the deformation of the slide due to its large overhang length, and providing better support for the machine tool spindle, thus improving the machine tool's machining capability and machining accuracy.

[0014] 2. By setting up a safety protection mechanism, this invention ensures the safety of machine tool use and avoids damage to machine tool operators and the machine tool itself. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the machine tool slide with a supporting structure in this invention;

[0017] Figure 2 This is a top view schematic diagram of the machine tool slide with a supporting structure in this invention;

[0018] Figure 3 This is a schematic diagram of the overall structure of the slide guide mechanism in this invention.

[0019] In the diagram: 1. Saddle; 2. Ram; 3. Ram support assembly; 4. Ram running guide mechanism; 5. Drive hydraulic cylinder; 7. Strip; 8. Linear guide rail; 9. Cylinder; 10. Shaft; 11. Bracket; 12. Cylinder bracket; 13. Slider. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-3 As shown, a machine tool ram with a support structure includes a saddle 1, a ram 2, and a machine tool ram support structure body. The ram 2 is disposed inside the inner cavity of the saddle 1 and is slidably connected to the saddle 1. The ram 2 can move up and down inside the inner cavity of the saddle 1.

[0022] The machine tool ram support structure includes a ram support assembly 3, a ram running guide mechanism 4, a drive hydraulic cylinder 5, and a safety protection mechanism. Linear guide rails 8 are provided on both sides of the saddle 1. Several sliders 13 are slidably arranged on one side of the linear guide rail 8 and are fixedly connected to the saddle 1. The other side of the linear guide rail 8 is fixedly connected to the ram running guide mechanism 4. The ram running guide mechanism 4 is distributed on both sides of the saddle 1. Through the cooperation of the linear guide rail 8 and the sliders 13, it can slide up and down relative to the saddle 1. The combination of the sliders 13 and the linear guide rail 8 has a smaller coefficient of friction than other sliding parts, which makes the sliding process more convenient and faster.

[0023] The ram support assembly 3 has a ring structure, encircling the ram 2. The ram 2 runs through the entire ram support assembly 3. The ram running guide mechanism 4 is fixedly connected to the ram support assembly 3, thus enabling the ram support assembly 3 to support the ram 2. At the same time, the ram running guide mechanism 4 is set on both sides of the saddle 1 to ensure the running accuracy of the ram support assembly 3. The sides of the ram 2 are provided with grooves, making the sides of the ram 2 octagonal. The ram support assembly 3 runs in a straight line relative to the ram 2. The inner side of the ram support assembly 3 is a plastic-coated surface. Several inserts 7 are fixedly installed on the inner side of the ram support assembly 3. The inserts 7 are inclined and fit against the outer side of the ram 2. The contact clamping between the outer side of the ram 2 and the inner side of the ram support assembly 3 is achieved by the inserts 7. Because the inserts 7 are inclined, the pre-tightness of the contact between the outer side of the ram support assembly 3 and the outer side of the ram 2 can be adjusted to make the two contact surfaces close together, so that the ram support assembly 3 and the ram 2 can be stably matched without shaking.

[0024] Two drive hydraulic cylinders 5 are provided and are respectively connected to both sides of the slide saddle 1. The drive hydraulic cylinders 5 have strong load-bearing capacity, can withstand large loads, have high safety, and are small in size. The end of the telescopic rod of the drive hydraulic cylinder 5 is fixedly connected to both sides of the slide support assembly 3, and the end of the drive hydraulic cylinder 5 away from the telescopic rod is fixedly connected to the slide saddle 1. The drive hydraulic cylinders 5 drive the slide guide mechanism 4 and the slide support assembly 3 to move up and down along the slide saddle 2. When the slide support assembly 3 needs to slide up and down, since there are drive hydraulic cylinders 5 on both sides of the slide saddle 1, both sides of the slide support assembly 3 are simultaneously subjected to the thrust of the telescopic rod of the drive hydraulic cylinder 5. The movement of the slide support assembly 3 will not deviate from the original sliding direction, thereby ensuring the running accuracy and stability of the slide guide mechanism 4 and the slide support assembly 3.

[0025] When machining is required, the slide ram 2 extends downward from inside the slide saddle 1. When the slide ram 2 extends a considerable distance from the slide saddle 1, the rigidity of the slide ram 2 decreases. The driving hydraulic cylinder 5 drives the slide ram support assembly 3 and the slide ram running guide mechanism 4 to extend and move downward along the slide ram 2. The cooperation between the slide ram running guide mechanism 4 and the slide ram support assembly 3 can extend the support point of the slide ram 2 from the bottom of the slide saddle 1 and approach the front end of the spindle of the slide ram 2, thus providing effective support for the slide ram 2. When the spindle is machining with high torque, the cooperation between the slide ram support assembly 3 and the slide ram running guide mechanism 4 can reduce the torsional and bending deformation of the slide ram 2, thereby improving the rigidity of the slide ram 2 components and effectively improving the machining accuracy and machining capacity of the machine tool.

[0026] The safety protection mechanism is located above the slide saddle 1. The safety protection mechanism includes a cylinder bracket 12 and a cylinder 9. The cylinder bracket 12 is fixedly installed on the upper end of the slide saddle 1. The cylinder 9 is mounted on the cylinder bracket 12. A shaft 10 is located in the middle of the cylinder 9. A bracket 11 is located at the upper end of the slide ram running guide mechanism 4. A hole is opened on the bracket 11. When the slide ram 2 moves upward along the inner cavity of the slide saddle 1, the hydraulic cylinder 5 drives the slide ram support assembly 3 and the slide ram running guide mechanism 4 to move upward along the slide ram 2. When the slide ram 2 reaches the upper limit position, the end of the slide ram 2 cannot be completely retracted into the inner cavity of the slide saddle 1. The overhang of the slide ram 2 is minimal and the rigidity is best. When the slide ram running guide mechanism 4 reaches the uppermost position, the end of the slide ram 2 is just in place with the slide ram support assembly 3. This allows the slide ram support assembly 3 to easily and quickly engage with the slide ram 2 when the slide ram 2 works next time. At the same time, the shaft 10 slides out and inserts into the hole of the bracket 11, thereby preventing the entire slide ram support structure from malfunctioning and falling.

[0027] The working principle of this invention is as follows: When the machine tool needs to process an object, the slide block 2 slides out from the inner cavity of the slide saddle 1 and moves downward along the Z-axis. As the slide block 2 slides out a greater and greater length, the rigidity of the slide block 2 will become worse and worse. When the slide block 2 extends from the slide saddle 1 to the lower limit position of the Z-axis, the slide block 2 reaches the maximum overhang, and the rigidity of the slide block 2 is the worst at this point. When the slide block 2 slides out beyond a certain length, the hydraulic cylinder 5 drives the slide block support assembly 3 to move downwards. Since the slide block running guide mechanism 4 and the slide block support assembly 3 are fixedly connected, the slide block support assembly 3 will drive the slide block running guide mechanism 4 to move downwards along the Z-axis. At this time, the slide block support assembly 3 hugs the slide block 2 and moves in a straight line along the outer side of the slide block 2, providing support for the overhanging part of the slide block 2, thereby improving the rigidity of the slide block 2. When the spindle is machining with high torque, the cooperation between the slide block support assembly 3 and the slide block running guide mechanism 4 can reduce the torsional and bending deformation of the slide block 2, thereby improving the rigidity of the slide block 2 component and effectively improving the machining accuracy and machining capacity of the machine tool. Several inclined strips 7 are fixedly installed on the inner side of the slide block support assembly 3, which increases the contact area between the slide block 2 and the slide block support assembly 3, ensuring that the slide block 2 and the slide block support assembly 3 are in close contact. When the slide block support assembly 3 needs to slide up and down... During operation, since both sides of the sliding saddle 1 are equipped with driving hydraulic cylinders 5, both sides of the ram support assembly 3 are simultaneously subjected to the thrust of the extension rods of the driving hydraulic cylinders 5. The operation of the ram support assembly 3 will not deviate from the original sliding direction, thus ensuring the running accuracy and stability of the ram running guide mechanism 4 and the ram support assembly 3. When the ram 2 moves upward along the Z-axis, the driving hydraulic cylinders 5 drive the ram support assembly 3 and the ram running guide mechanism 4 to move upward. When the ram 2 reaches the upper limit position, the overhang of the ram 2 is the smallest and the rigidity is the best. At this time, the entire ram support structure returns to the most original position, and the end of the ram 2 just matches the ram support assembly 3. This allows the ram support assembly 3 to easily and quickly match the ram 2 when the ram 2 works next time. At the same time, when the ram 2 reaches the upper limit position, the cylinder 9 drives the shaft 10 to insert into the hole of the bracket 11 to fix the entire ram support structure and prevent the entire ram support structure from falling and causing danger.

[0028] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A machine tool ram with a support structure, comprising a saddle (1), a ram (2), and a machine tool ram support structure body, wherein the ram (2) is disposed inside the inner cavity of the saddle (1), and the ram (2) is slidably connected to the saddle (1), characterized in that: The machine tool ram support structure includes a ram support assembly (3), a ram running guide mechanism (4), a driving hydraulic cylinder (5), and a safety protection mechanism. The ram running guide mechanism (4) is distributed on both sides of the saddle (1). The ram support assembly (3) has a ring structure, which surrounds the ram (2). The ram (2) runs through the entire ram support assembly (3). The ram running guide mechanism (4) is fixedly connected to the ram support assembly (3). The ram support assembly (3) runs linearly relative to the ram (2). There are two driving hydraulic cylinders (5), which are respectively connected to both sides of the saddle (1). The ends of the telescopic rods of the driving hydraulic cylinders (5) are fixedly connected to both sides of the ram support assembly (3). The end of the driving hydraulic cylinder (5) away from the telescopic rod is fixedly connected to the saddle (1). The safety protection mechanism is located above the saddle (1). Linear guide rails (8) are provided on both sides of the slide saddle (1). Several sliders (13) are provided on one side of the linear guide rail (8), and the sliders (13) are fixedly connected to the slide saddle (1). The other side of the linear guide rail (8) is fixedly connected to the slide ram running guide mechanism (4). The slide ram running guide mechanism (4) is distributed on both sides of the slide saddle (1) through the linear guide rail (8) and the sliders (13).

2. A machine tool slide with a supporting structure according to claim 1, characterized in that, The sides of the slide (2) are provided with grooves, and the sides of the slide (2) are octagonal.

3. A machine tool slide with a supporting structure according to claim 1, characterized in that, Several strips (7) are fixedly installed on the inner side of the ram support assembly (3). The inner side of the ram support assembly (3) is a plastic-coated surface, and the strips (7) are inclined. The strips (7) are attached to the outer side of the ram (2).

4. A machine tool slide with a supporting structure according to claim 1, characterized in that, The safety protection mechanism includes a cylinder bracket (12) and a cylinder (9). The cylinder bracket (12) is fixedly installed on the upper end of the slide saddle (1). The cylinder (9) is set on the cylinder bracket (12). A shaft (10) is set in the middle of the cylinder (9). A bracket (11) is set on the upper end of the slide ram running guide mechanism (4). A hole is opened on the bracket (11).

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