A screw clamping hydraulic center frame device

Abstract

The utility model relates to the field of hydraulic center stand, concretely is a screw rod clamping hydraulic center stand device, including center stand body, the front of center stand body is equipped with the support groove, the inboard side swing joint of support groove has two support dog, the back of center stand body installed hydraulic cylinder, the one end of hydraulic cylinder close to support groove installed piston pipe, the outside of support groove is equipped with screw rod clamping mechanism, in the utility model, through screw rod clamping mechanism, can be in support dog to workpiece clamping after the completion, to the support position carries out the reinforcement to guarantee workpiece support state more stable, not only can effectively alleviate the support dog loosening or position deviation caused by the vibration in the machining process, can also promote workpiece positioning accuracy under the condition of high speed cutting and long time machining, reduced the cutter impact and wear caused by the unstable support, help to prolong the service life of cutter and center stand part.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic center frame, specifically a screw clamping hydraulic center frame device. Background Technology

[0002] Hydraulic center supports are mainly used for support when machine tools are machining slender shaft-like workpieces. Because slender workpieces are prone to bending and vibration during machining, which can lead to a decrease in machining accuracy or even damage to the cutting tools, additional support devices are needed to stabilize the workpiece.

[0003] Publication No. CN222155285U discloses a screw clamping hydraulic center frame device, including a mounting base and a first fixing block. A mounting plate is fixedly connected to the front end of the mounting base, and positioning rods are fixedly connected to the four corners of the front end of the mounting plate. The first fixing block is set at the front end of the mounting plate, and a hydraulic cylinder is fixedly installed on one side of the first fixing block. A connecting pipe is fixedly connected to the bottom end of the hydraulic cylinder, and a telescopic rod is fixedly connected to one side of the hydraulic cylinder. By setting up the hydraulic cylinder and other parts, opening the hydraulic cylinder can drive the telescopic rod to move to one side. When the telescopic rod moves, it will drive the clamping block to unfold outward through the connecting block. Then, the telescopic rod is retracted, and the clamping block will clamp the workpiece. The rollers set up make the clamping more flexible and applicable, solving the problem that manual clamping is not convenient enough and is prone to falling off.

[0004] In the aforementioned prior art, a hydraulic cylinder drives a telescopic rod to move, which in turn drives a clamping block to open via a connecting block. Once the workpiece is in place, the hydraulic cylinder pushes the telescopic rod in the opposite direction to retract, causing the clamping block to close and clamp the workpiece, thereby achieving support and positioning of shaft-type workpieces. However, during long-term use of the hydraulic center rest or machine tool, the support claws are subjected to the combined effects of cutting forces and vibrations when in contact with the workpiece. Related connecting parts are prone to loosening or slight displacement, resulting in a decrease in the positioning accuracy of the support claws on the workpiece. Especially under high-speed or heavy cutting conditions, the periodic vibration generated by the workpiece during rotation will further amplify this deviation, making it difficult for the workpiece support part to remain stable, thereby reducing machining accuracy and even adversely affecting tool life. To address this, we propose a screw-clamping hydraulic center rest device. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic center frame device for screw clamping to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a screw clamping hydraulic center frame device includes a center frame body, a support groove on the front side of the center frame body, two support claws movably connected to the inner side of the support groove, a hydraulic cylinder installed on the back side of the center frame body, and a piston tube installed at the end of the hydraulic cylinder near the support groove. The outer side of the support groove is provided with a screw clamping mechanism. Two sets of screw clamping mechanisms are respectively located on the outer side of the two support claws. Each screw clamping mechanism includes two fixed supports. The two fixed supports are fixedly installed on the front side of the central frame body near the corner. A screw is rotatably connected between the two fixed supports. Two movable plates are threadedly connected to the surface of the screw. The screw is located on the outer side of the support claw, and the two movable plates are located on both sides of the support claw. A square rod is fixedly connected to the movable plate on the side near the fixed support. The square rod is slidably connected to the fixed support.

[0007] Furthermore: buffer pads are glued to the side of the movable plate near the support claw, and a knob is fixedly connected to one end of the lead screw.

[0008] Furthermore: the support claw includes a support base, a pad claw is fixedly installed at one end of the support base near the outer side of the support groove, and a connecting rod is fixedly installed at one end of the support base near the inner side of the support groove.

[0009] Furthermore: both ends of the piston tube are engaged with fixed shafts, which are rotatably connected inside the central frame body, and the other end of the connecting rod is fixedly connected to the fixed shafts.

[0010] Furthermore: one end of the support claw is fixedly connected to a limiting shaft, and a limiting slide is provided on the inner wall of the support groove to match the movement path of the support claw. The size of the limiting slide is adapted to the size of the limiting shaft.

[0011] Furthermore: the cushioning pad is made of silicone.

[0012] Furthermore: the length of the movable plate is matched with the clamping range of the support claw.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the screw clamping mechanism can reinforce the support position after the support claw clamps the workpiece, thereby ensuring a more stable workpiece support state. This not only effectively reduces the loosening or positional deviation of the support claw caused by vibration during processing, but also improves the positioning accuracy of the workpiece under high-speed cutting and long-term processing conditions. It also reduces tool impact and wear caused by unstable support, and helps to extend the service life of the tool and center rest components. Attached Figure Description

[0014] Figure 1 This is a schematic elevation view of a hydraulic center frame device for screw clamping according to the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 In this utility model Figure 1 Enlarged view of a portion of the diagram.

[0015] In the diagram: 1. Central frame body; 2. Support groove; 3. Support claw; 4. Hydraulic cylinder; 5. Piston tube; 6. Screw clamping mechanism; 7. Fixed support; 8. Screw; 9. Movable plate; 10. Square rod; 11. Buffer pad; 12. Knob; 13. Support seat; 14. Pad claw; 15. Connecting rod; 16. Fixed shaft; 17. Limiting shaft; 18. Limiting slide. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 The figure shows a preferred embodiment of the present invention, a screw clamping hydraulic center frame device, including a center frame body 1, a support groove 2 on the front side of the center frame body 1, two support claws 3 movably connected to the inner side of the support groove 2, a hydraulic cylinder 4 installed on the back side of the center frame body 1, and a piston tube 5 installed at one end of the hydraulic cylinder 4 near the support groove 2. A screw clamping mechanism 6 is provided on the outside of the support groove 2. Two sets of screw clamping mechanisms 6 are located on the outside of the two support claws 3 respectively. Each screw clamping mechanism 6 includes two fixed supports 7. The two fixed supports 7 are fixedly installed on the front of the central frame body 1 near the corner. A screw 8 is rotatably connected between the two fixed supports 7. Two movable plates 9 are threadedly connected to the surface of the screw 8. The screw 8 is located on the outside of the support claw 3. The two movable plates 9 are located on both sides of the support claw 3. A square rod 10 is fixedly connected to the side of the movable plate 9 near the fixed support 7. The square rod 10 is slidably connected to the fixed support 7.

[0018] Among them, the movable plate 9 is attached with a buffer pad 11 on the side near the support claw 3, and a knob 12 is fixedly connected to one end of the lead screw 8 to facilitate the rotation of the lead screw 8.

[0019] Specifically, the support claw 3 includes a support base 13, with a pad claw 14 fixedly installed at one end of the support base 13 near the outer side of the support groove 2, and a connecting rod 15 fixedly installed at one end of the support base 13 near the inner side of the support groove 2; the support base 13 is used to support shaft-type workpieces, and the connecting rod 15 is used to control the opening or closing of the support claw 3.

[0020] It is understandable that both ends of the piston tube 5 are engaged with fixed shafts 16, the fixed shafts 16 are rotatably connected inside the central frame body 1, and the other end of the connecting rod 15 is fixedly connected to the fixed shafts 16; for example Figure 2As shown, when the piston tube 5 moves back and forth under the control of the hydraulic cylinder 4, it can control the two support seats 13 to open or close by engaging with the fixed shaft 16 and through the connecting rod 15.

[0021] One end of the support claw 3 is fixedly connected to a limiting shaft 17, and a limiting slide 18 matching the movement path of the support claw 3 is provided on the inner wall of the support groove 2. The size of the limiting slide 18 is adapted to the size of the limiting shaft 17, making the movement of the support base 13 more stable. Figure 2 In the middle, the position of the limiting slide 18 is indicated by a dashed line.

[0022] Among them, the vibration experienced by the buffer pad 11 during processing is represented by silicone.

[0023] To accommodate the clamping of shaft-type workpieces of different sizes by the support claw 3, the length of the movable plate 9 is matched with the clamping range of the support claw 3.

[0024] In this embodiment, after the hydraulic cylinder 4 is started, when the piston tube 5 moves back and forth under the control of the hydraulic cylinder 4, it can control the two support seats 13 to open or close through the connecting rod 15 by meshing with the fixed shaft 16, thus supporting the workpiece. Before processing, the screw 8 can be rotated by the knob 12, so that the two movable plates 9 move closer to the support seats 13 under the restriction of the square rod 10. Finally, they are clamped on the support seats 13 by the buffer pad 11, thus completing the clamping and reinforcement of the support seats 13. At this time, the workpiece can be processed.

[0025] Finally, it should be noted that, in order to facilitate a clear demonstration and understanding of the structure of this invention, the accompanying drawings are not drawn strictly according to the actual scale. The drawings may contain enlarged, reduced, or distorted representations of specific components, spacing, or angles. Those skilled in the art should understand that, in actual production or manufacturing, the dimensions, tolerances, and proportional relationships described in this text shall prevail. In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A screw clamping hydraulic center frame device, comprising a center frame body (1), a support groove (2) provided on the front side of the center frame body (1), two support claws (3) movably connected to the inner side of the support groove (2), a hydraulic cylinder (4) installed on the back side of the center frame body (1), and a piston tube (5) installed at one end of the hydraulic cylinder (4) near the support groove (2). Its features are: The outer side of the support groove (2) is provided with a screw clamping mechanism (6). The two sets of screw clamping mechanisms (6) are located on the outer side of the two support claws (3). Each screw clamping mechanism (6) includes two fixed supports (7). The two fixed supports (7) are fixedly installed on the front of the central frame body (1) near the corner. A screw (8) is rotatably connected between the two fixed supports (7). The surface of the screw (8) is threaded with two movable plates (9). The screw (8) is located on the outer side of the support claw (3). The two movable plates (9) are located on both sides of the support claw (3). A square rod (10) is fixedly connected to the side of the movable plate (9) near the fixed support (7). The square rod (10) is slidably connected to the fixed support (7).

2. The screw clamping hydraulic center frame device according to claim 1, characterized in that: The movable plate (9) is attached with a buffer pad (11) on the side near the support claw (3), and a knob (12) is fixedly connected to one end of the lead screw (8).

3. The screw clamping hydraulic center frame device according to claim 1, characterized in that: The support claw (3) includes a support base (13), and a pad claw (14) is fixedly installed at one end of the support base (13) near the outer side of the support groove (2), and a connecting rod (15) is fixedly installed at one end of the support base (13) near the inner side of the support groove (2).

4. The screw clamping hydraulic center frame device according to claim 3, characterized in that: Both ends of the piston tube (5) are engaged with fixed shafts (16), which are rotatably connected to the interior of the central frame body (1). The other end of the connecting rod (15) is fixedly connected to the fixed shafts (16).

5. The screw clamping hydraulic center frame device according to claim 1, characterized in that: One end of the support claw (3) is fixedly connected to a limiting shaft (17), and a limiting slide (18) matching the movement path of the support claw (3) is provided on the inner wall of the support groove (2). The size of the limiting slide (18) is adapted to the size of the limiting shaft (17).

6. The screw clamping hydraulic center frame device according to claim 2, characterized in that: The cushioning pad (11) is made of silicone.

7. The screw clamping hydraulic center frame device according to claim 1, characterized in that: The length of the movable plate (9) is matched with the clamping range of the support claw (3).

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