Machine tool with carriage movement of the bed

Abstract

This invention relates to the field of pipe processing technology, specifically to a machine tool with a movable bed carriage, including a frame. A core-pulling component is mounted on the surface of the frame. A lead screw assembly is located at the front of the core-pulling component. A movable carriage is mounted on the outer side of the lead screw assembly. An auxiliary bracket is provided on the surface of the lead screw assembly, and a support mechanism is provided at the front end of the movable carriage. This invention, through a novel structure of front and rear auxiliary brackets, provides better support for the pipe, solving the problem of insufficient carriage thrust and resulting minor deformation during pipe bending. This makes processing long materials simpler and faster, reducing pipe bending caused by the inherent deflection of thin-walled titanium alloy pipes. Simultaneously, the addition of a new core-pulling mechanism increases the core-pulling force while making the core-pulling distance more precise, creating a slow and uniform sliding state on the inner wall of the pipe, reducing the risk of pipe breakage and minimizing scratches in the bending area.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, specifically to a machine tool with a moving bed carriage. Background Technology

[0002] In the field of metal pipe processing, pipe bending is a crucial process that is widely used in various industries such as construction, automobiles, aerospace, and furniture manufacturing. With the continuous development of modern industry, in order to improve production quality, it is especially important to control the quality of metal pipe bending.

[0003] During the pipe bending process, when the propulsion force provided by the bed carriage is insufficient, the pipe will undergo slight deformation due to uneven force during the bending and forming stage. This can easily lead to phenomena such as bending curvature deviation, uneven pipe wall thickness, and elliptic cross-section. To address these issues, we have proposed a machine tool solution with a movable bed carriage. Summary of the Invention

[0004] The purpose of this invention is to provide a machine tool with a movable bed carriage to solve the problems mentioned in the background art, where, in the tube bending process, when the propulsion force provided by the bed carriage is insufficient, the tube will undergo slight deformation due to uneven force during the bending and forming stage, which can easily cause deviations in bending curvature, uneven tube wall thickness, and elliptic cross-section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a machine tool with a movable bed carriage, including a frame, a core-pulling component mounted on the surface of the frame, a lead screw assembly provided on the front side of the core-pulling component, a movable carriage mounted on the outer side of the lead screw assembly, an auxiliary bracket provided on the surface of the lead screw assembly, and a support mechanism provided at the front end of the movable carriage;

[0006] The core-pulling component consists of a fixing frame, a servo motor, and a reducer.

[0007] The lead screw assembly consists of a servo motor, a reducer, a thrust needle roller bearing, and a ball screw.

[0008] Preferably, a servo motor is mounted on the surface of the fixed frame, and the output end of the servo motor is directly connected to a worm gear for driving. A reducer is also mounted on the surface of the frame.

[0009] Preferably, the second servo motor is fixedly mounted on the surface of the frame, and a second reducer is mounted on the outside of the second servo motor. The output end of the second reducer is connected to a thrust needle roller bearing, and a ball screw is connected to the outside of the thrust needle roller bearing.

[0010] Preferably, the auxiliary bracket consists of a lead screw, a copper sleeve, a cylinder, a lifting mold, and an auxiliary frame. The lead screw connects the front and rear auxiliary frames and is installed on the lead screw. The auxiliary frame contains the copper sleeve, the cylinder, and the lifting mold.

[0011] Preferably, a grating displacement sensor is added to the outer side of the thrust needle roller bearing.

[0012] Preferably, the auxiliary bracket is equipped with a proximity switch on the contact surface with the mobile trolley.

[0013] Preferably, the mobile trolley is equipped with an angle sensor at the axis position.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention utilizes a novel front and rear auxiliary bracket structure, which provides better support for the pipe and solves the problem of minor deformation caused by insufficient trolley thrust during the pipe bending process. This makes processing long materials simpler and faster, reducing pipe bending caused by the inherent deflection of thin-walled titanium alloy pipes. Simultaneously, a new core-pulling mechanism is added, increasing the core-pulling force while making the core-pulling distance more precise, creating a slow and uniform sliding state on the inner wall of the pipe, reducing the risk of pipe breakage and minimizing scratches in the bending area. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the lead screw assembly of the present invention;

[0019] Figure 3 This is a schematic diagram of the core-pulling component of the present invention.

[0020] In the diagram: 1. Frame; 2. Core pulling component; 201. Fixing frame; 202. Servo motor; 203. Reducer; 3. Lead screw assembly; 301. Servo motor; 302. Reducer; 303. Thrust needle roller bearing; 304. Ball screw; 305. Grating displacement sensor; 4. Moving trolley; 401. Angle sensor; 5. Auxiliary bracket; 501. Proximity switch; 6. Host mechanism. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-3 This invention provides an embodiment of a machine tool with a movable bed carriage, comprising a frame 1, a core-pulling component 2 mounted on the surface of the frame 1, a lead screw assembly 3 located at the front of the core-pulling component 2, a movable carriage 4 mounted on the outer side of the lead screw assembly 3, an auxiliary bracket 5 provided on the surface of the lead screw assembly 3, and a support mechanism 6 provided at the front end of the movable carriage 4; the core-pulling component 2 consists of a fixed frame 201, a servo motor 202, and a reducer 203; the lead screw assembly 3 consists of a servo motor 301, a reducer 302, a thrust needle roller bearing 303, and a ball screw 304; this structure offers better strength, precision, lifespan, user customization, and safety. A height between 1100-1300mm is more ergonomic, and multiple sensor segments facilitate maintenance and future modifications and repairs.

[0023] This device, through the configuration of the core-pulling component 2, the lead screw assembly 3, the moving trolley 4, the auxiliary bracket 5, and the support mechanism 6, solves the problem that when the propulsion force provided by the bed trolley is insufficient during the pipe bending process, the pipe will undergo slight deformation due to uneven force during the bending and forming stage, which can easily cause deviations in bending arc, uneven pipe wall thickness, and elliptic cross-section.

[0024] Furthermore, a servo motor 202 is mounted on the surface of the mounting bracket 201. The output end of the servo motor 202 is directly connected to a worm gear for drive. A reducer 203 is also mounted on the surface of the frame 1. Figure 3 As shown, this structure, through the setting of servo motor-202 and reducer-203, can meet the large pulling force when performing the core pulling action. At the same time, the accuracy of the worm gear is much higher than that of the cylinder and reducer, which can effectively control the uniformity of the core pulling action.

[0025] Furthermore, servo motor 2 301 is fixedly mounted on the surface of frame 1. A reducer 2 302 is mounted on the outside of servo motor 2 301. A thrust needle roller bearing 303 is connected to the output end of reducer 2 302, and a ball screw 304 is connected to the outside of thrust needle roller bearing 303. For example... Figure 2 As shown, this structure is used to replace the ball screw 304 with a thrust needle roller bearing 303 to bear the radial force of the servo motor 301, ensuring the service life of the long-distance ball screw 304 transmission. The rigidly connected components can completely transmit the speed and torque of the motor to the components.

[0026] Furthermore, the auxiliary bracket 5 consists of a lead screw, a copper bushing, a cylinder, a lifting mold, and an auxiliary frame. The lead screw connects the front and rear auxiliary frames and is mounted on the lead screw. The auxiliary frame contains the copper bushing, the cylinder, and the lifting mold. Figure 3 As shown, this structure is used to avoid squealing and vibration of the lead screw over long distances. (During lead screw operation, squealing occurs when the length exceeds 1.5m, caused by a slight and difficult-to-eliminate difference in rotational speed at both ends, as well as resonance.) The brass sleeve eliminates resonance during the operation of the transmission accessories. Simultaneously, as can be seen from the above working conditions, the auxiliary bracket achieves distributed pipe lifting during the manufacturing process. This allows the pipe deflection to be evenly distributed within a 1.5m range. Without fixed lifting, the deflection of the remaining parts is excessive, resulting in severe pipe sagging.

[0027] Furthermore, a grating displacement sensor 305 is added to the outer side of the thrust needle roller bearing 303. For example... Figure 3 As shown, this structure is used to detect the actual displacement distance of the moving trolley 4 through the grating displacement sensor 305, and to adjust the error of the servo motor 301 through the driver.

[0028] Furthermore, a proximity switch 501 is installed on the contact surface between the auxiliary bracket 5 and the moving trolley 4. For example... Figure 3 As shown, this structure is used to control the advance and retraction of the cylinder via proximity switch 501. Proximity switch 501 ensures that there will be no collision between the moving trolley 4 and the auxiliary bracket 5 due to fixed program position or human operation error, greatly improving safety, simplicity and customizability.

[0029] Furthermore, the mobile trolley 4 is equipped with an angle sensor 401 at its axis position. For example... Figure 3 As shown, this structure is used to adjust the final rotation angle by setting the angle sensor 401. Due to its long connecting rod structure, there may be errors caused by the tolerance of the parts themselves, wear of the sliding block, etc. By adding the angle sensor 401, the final rotation angle can be adjusted again. At the same time, the condition of worn parts such as the slider can be judged by the adjustment amount. This allows for rational maintenance and inspection of the equipment, generating data-driven maintenance requirements, rather than simply maintaining it according to a fixed maintenance cycle, making it more adaptable to various working environments.

[0030] Working principle: When using, such as Figure 1 and Figure 3As shown, during loading, the moving trolley 4 clamps the pipe and moves backward. As the moving trolley 4 moves backward, the cylinder at the support mechanism 6 lifts and supports the pipe. When the moving trolley 4 moves out of the auxiliary bracket 5, the cylinder at the front of the auxiliary bracket 5 lifts and supports the pipe, forming a situation where the auxiliary bracket 5 and the support mechanism 6 simultaneously support the pipe mandrel. When the moving trolley 4 approaches the rear part of the auxiliary bracket 5 and reaches the limit, the cylinder at the rear part of the auxiliary bracket 5 retracts, thus completing all loading steps. During loading, the core-pulling part 2 remains unchanged at the initial mark "0". During processing, the moving trolley 4 moves at a follow-up speed. When the moving trolley 4 leaves the rear limit of the auxiliary bracket 5, the cylinder at the rear of the auxiliary bracket 5 lifts, achieving simultaneous lifting by the auxiliary bracket 5 and the support mechanism 6. When the moving trolley 4 contacts the front limit of the auxiliary bracket 5, the cylinder at the front of the auxiliary bracket 5 retracts to avoid it. The moving trolley 4 presses against the front of the auxiliary bracket 5 and pushes the front of the auxiliary bracket 5 to follow up, thus completing the processing.

[0031] Note: The rotating trolley 4 rotates at a certain angle according to the machining drawings, but is not linked to other parts;

[0032] The core-pulling component 2 moves backward and forward according to the processing technology, without any linkage with other components. The above is the complete working principle of this invention.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A machine tool with a movable bed carriage, comprising a frame (1), characterized in that: The frame (1) is equipped with a core-pulling component (2), and a lead screw assembly (3) is provided on the front side of the core-pulling component (2). A mobile trolley (4) is mounted on the outside of the lead screw assembly (3). An auxiliary bracket (5) is provided on the surface of the lead screw assembly (3), and a support mechanism (6) is provided at the front end of the mobile trolley (4). The core-pulling component (2) consists of a fixed frame (201), a servo motor (202), and a reducer (203); The lead screw assembly (3) consists of a second servo motor (301), a second reducer (302), a thrust needle roller bearing (303), and a ball screw (304).

2. The machine tool with a movable bed carriage according to claim 1, characterized in that: A servo motor (202) is mounted on the surface of the fixed frame (201). The output end of the servo motor (202) is directly connected to the worm gear for driving. A reducer (203) is also mounted on the surface of the frame (1).

3. The machine tool with a movable bed carriage according to claim 1, characterized in that: The second servo motor (301) is fixedly mounted on the surface of the frame (1). The second reducer (302) is mounted on the outside of the second servo motor (301). The output end of the second reducer (302) is connected to a thrust needle roller bearing (303). The outside of the thrust needle roller bearing (303) is connected to a ball screw (304).

4. The machine tool with a movable bed carriage according to claim 1, characterized in that: The auxiliary bracket (5) consists of a lead screw, a copper sleeve, a cylinder, a lifting mold and an auxiliary frame. The lead screw connects the front and rear auxiliary frames and is installed on the lead screw. The auxiliary frame contains a copper sleeve, a cylinder and a lifting mold.

5. The machine tool with a movable bed carriage according to claim 1, characterized in that: A grating displacement sensor (305) is added to the outside of the thrust needle roller bearing (303).

6. The machine tool with a movable bed carriage according to claim 1, characterized in that: The auxiliary bracket (5) is equipped with a proximity switch (501) on the contact surface with the mobile trolley (4).

7. The machine tool with a movable bed carriage according to claim 1, characterized in that: The mobile trolley (4) is equipped with an angle sensor (401) at the axis position.

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