Adjustable straightening machine

Abstract

The utility model discloses an adjustable straightening machine which comprises a protective shell, two servo motors and a correcting frame, the two servo motors are symmetrically and fixedly installed on the upper end face of the protective shell, and the output end of each servo motor is fixedly provided with a threaded column. The lower end of each threaded column penetrates through the upper end face of the protective shell and extends into the protective shell, each threaded column is in threaded connection with a threaded sleeve, an adjusting plate is arranged between the two threaded sleeves, cavities are formed in the two ends of the adjusting plate respectively, and a correction frame is arranged in the protective shell. The adjusting plate compresses the spring through the upper buffer cylinder, the elastic force generated by the spring acts on the connecting plate through the lower buffer cylinder, and then the pressure of the adjusting plate is all concentrated in the vertical central axis direction of the upper pressing block, so that the situation that the left side and the right side of the upper pressing block are stressed unevenly due to the fact that threaded columns are not synchronous is avoided, and a straightened workpiece deforms correspondingly; and the machining precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of straightening machines, in particular to an adjustable straightening machine. Background Technique

[0002] A straightening machine is a detection and straightening device designed for the bending deformation of shaft-like products after heat treatment. The straightening machine straightens the deformed part of the shaft-like parts by pressing down the pressing head main shaft thereon. The traditional straightening machine relies on a motor to drive the pressing head main shaft to press down. Considering that a single motor cannot meet the straightening pressure requirements of the straightening machine, usually two motors are used to drive together to increase the straightening pressure. The mode of using two motors to drive two lead screws together drives the pressing head main shaft to press down. The two-motor drive mode has the advantages of low cost, simple maintenance, low failure rate, low working noise, high real-time performance, and fast response speed.

[0003] The applicant once designed a synchronous buffer mechanism for a double-lead screw straightening machine, with the publication number: C N215391732U. This design can achieve straightening at one time, but usually, secondary straightening is still required. In view of this, as a secondary improvement, we specifically apply for this invention.

[0004] In order to solve the above problems, the utility model proposes an adjustable straightening machine. Content of the Utility Model

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] An adjustable straightening machine includes a protective shell, two servo motors, and a correction frame. The two servo motors are symmetrically and fixedly installed on the upper end surface of the protective shell. The output end of each servo motor is fixedly installed with a threaded column. The lower end of each threaded column penetrates the upper end surface of the protective shell and extends into the protective shell. Each threaded column is threadedly connected with a threaded sleeve. An adjusting plate is jointly arranged between the two threaded sleeves. Cavities are respectively opened at both ends of the adjusting plate. A limiting block is slidably connected in each cavity. Extension plates are fixedly installed on the opposite sides of the two limiting blocks. The other end of each extension plate penetrates the side wall of the adjusting plate and is rotatably connected to the side wall of the threaded sleeve. The center of the lower end surface of the adjusting plate is rotatably connected with an upper pressing block. Two groups of buffer mechanisms are symmetrically arranged on the side wall of the upper pressing block. A lower pressing block is arranged directly below the upper pressing block. The correction frame is located at the rear end of the protective housing and is located at the rear ends of the upper pressing block and the lower pressing block. Side plates with chutes are arranged on both sides of the correction frame. A first connecting rod and a second connecting rod are arranged inside the two side plates. A plurality of correction rollers are arranged on the same side of the first connecting rod and the second connecting rod. A clamping area is formed between the upper pressing block and the lower pressing block, which is opposite to the correction area formed by the correction rollers on the first connecting rod and the second connecting rod.

[0007] Preferably, two vertical cavities are symmetrically formed in the lower pressing block, a sliding plug is slidably connected in each vertical cavity, a limiting rod is vertically and fixedly installed at the center of the upper end surface of each sliding plug, and the upper end of each limiting rod penetrates through the upper end surface of the lower pressing block and is fixedly connected to the bottom end surface of the upper pressing block.

[0008] Preferably, the buffer mechanism includes an upper buffer cylinder and a lower buffer cylinder. The upper buffer cylinder is rotatably connected to the bottom end surface of the adjusting plate, the lower buffer cylinder is fixedly installed on the side wall of the upper pressing block through a connecting plate, an upper buffer plate is slidably connected in the upper buffer cylinder, and a lower buffer plate is slidably connected in the lower buffer cylinder.

[0009] Preferably, a buffer rod is fixedly installed between the upper buffer plate and the lower buffer plate. The buffer rod is slidably connected between the upper buffer cylinder and the lower buffer cylinder. Two springs are symmetrically arranged between the upper buffer cylinder and the lower buffer cylinder. The upper and lower ends of each spring are respectively fixedly connected to the side walls of the upper buffer cylinder and the lower buffer cylinder.

[0010] Preferably, the inner diameter of each threaded sleeve matches the threaded column, and the inner wall of the threaded sleeve is provided with a thread matching the threaded column.

[0011] Preferably, access openings are formed in the front and rear sides of the protective shell.

[0012] Preferably, a sliding groove is arranged at the position where the correction frame contacts the first connecting rod and the second connecting rod. Sliding blocks are arranged at both ends where the first connecting rod and the second connecting rod contact. The sliding blocks are arranged in the sliding groove.

[0013] Preferably, a rotating motor is arranged on the top surface of the correction frame. The output end of the rotating motor is coaxially connected to a bidirectional lead screw. The bidirectional lead screw respectively passes through the first connecting rod and the second connecting rod. The thread directions of the first connecting rod and the second connecting rod in contact are opposite.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The adjusting plate compresses the spring through the upper buffer cylinder, and the elastic force generated by the spring acts on the connecting plate through the lower buffer cylinder, thereby concentrating all the pressure of the adjusting plate in the direction of the vertical central axis of the upper pressing block, avoiding the situation that the left and right sides of the upper pressing block are unevenly stressed due to the asynchronous movement of the threaded columns, preventing the straightened workpiece from being deformed accordingly, improving the processing accuracy, and at the same time, the designed correction frame can achieve secondary correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a front structural schematic diagram of an adjustable straightening machine proposed by the present utility model;

[0017] Figure 2 The front sectional view of an adjustable straightening machine proposed by the present utility model;

[0018] Figure 3 is Figure 2 the enlarged structural schematic diagram at position A in

[0019] Figure 4 the structural schematic diagram of the straightening frame.

[0020] Figure 5 the contact relationship diagram of the slider and the sliding groove.

[0021] In the figure: 1 lower pressing block, 2 upper pressing block, 3 extension plate, 4 sliding plug, 5 limiting rod, 6 upper buffer cylinder, 7 adjusting plate, 8 limiting block, 9 threaded column, 10 protective shell, 11 servo motor, 111 rotating motor, 12 connecting plate, 13 lower buffer cylinder, 14 lower buffer plate, 15 spring, 16 upper buffer plate, 17 buffer rod, 18 straightening frame, 181 sliding groove, 19 bidirectional lead screw, 20 first connecting rod, 21 second connecting rod, 22 straightening roller, 23 slider. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0024] Refer to Figures 1-5, An adjustable straightening machine, including a protective housing 10, two servo motors 11 and a straightening frame 18. The two servo motors 11 are symmetrically and fixedly installed on the upper end face of the protective housing 10. The output end of each servo motor 11 is fixedly installed with a threaded column 9. The lower end of each threaded column 9 penetrates through the upper end face of the protective housing 10 and extends into the protective housing 10. A threaded sleeve is threadedly connected to each threaded column 9. An adjusting plate 7 is jointly arranged between the two threaded sleeves. Cavities are respectively formed at both ends of the adjusting plate 7. A limiting block 8 is slidably connected in each cavity. An extension plate 3 is fixedly installed on the back side of each of the two limiting blocks 8. The other end of each extension plate 3 penetrates through the side wall of the adjusting plate 7 and is rotatably connected to the side wall of the threaded sleeve. The center of the lower end face of the adjusting plate 7 is rotatably connected with an upper pressing block 2. Two groups of buffer mechanisms are symmetrically arranged on the side wall of the upper pressing block 2. A lower pressing block 1 is arranged directly below the upper pressing block 2. The straightening frame 18 is located at the rear end of the protective housing and is located at the rear end of the upper pressing block and the lower pressing block. Side plates with chutes 181 are arranged on both sides of the straightening frame. A first connecting rod 20 and a second connecting rod 21 are arranged inside the two side plates. A plurality of straightening rollers 22 are arranged on the same side of the first connecting rod and the second connecting rod. A clamping area is formed between the upper pressing block and the lower pressing block, which is opposite to the straightening area formed by the straightening rollers on the first connecting rod and the second connecting rod.

[0025] Two vertical cavities are symmetrically formed in the lower pressing block 1. A sliding plug 4 is slidably connected in each vertical cavity. A limiting rod 5 is vertically and fixedly installed at the center of the upper end face of each sliding plug 4. The upper end of each limiting rod 5 penetrates through the upper end face of the lower pressing block 1 and is fixedly connected to the bottom end face of the upper pressing block 2.

[0026] Among them, the buffer mechanism includes an upper buffer cylinder 6 and a lower buffer cylinder 13. The upper buffer cylinder 6 is rotatably connected to the bottom end face of the adjusting plate 7. The lower buffer cylinder 13 is fixedly installed on the side wall of the upper pressing block 2 through a connecting plate 12. An upper buffer plate 16 is slidably connected in the upper buffer cylinder 6. A lower buffer plate 14 is slidably connected in the lower buffer cylinder 13. When the adjusting plate 7 is tilted to compress the spring 15, the spring 15 will concentrate the pressure of the adjusting plate 7 on the upper pressing block 2;

[0027] Among them, a buffer rod 17 is jointly fixedly installed between the upper buffer plate 16 and the lower buffer plate 14. The buffer rod 17 is slidably connected between the upper buffer cylinder 6 and the lower buffer cylinder 13. Two springs 15 are symmetrically arranged between the upper buffer cylinder 6 and the lower buffer cylinder 13. The upper and lower ends of each spring 15 are respectively fixedly connected to the side walls of the upper buffer cylinder 6 and the lower buffer cylinder 13. The cooperation of the lower buffer plate 14, the upper buffer plate 16 and the buffer rod 17 makes the upper buffer cylinder 6 and the lower buffer cylinder 13 on the same axis;

[0028] Among them, the inner diameter of each threaded sleeve matches that of the threaded post 9, and threads matching the threaded post 9 are provided on the inner wall of the threaded sleeve. During the rotation of the threaded post 9, the threaded sleeve will be driven to move up and down along the threaded post 9;

[0029] Among them, access openings are provided on the front and rear sides of the protective shell 10, which facilitate the access of workpieces to be processed.

[0030] Preferably, chutes are provided at the positions where the calibration frame contacts the first connecting rod and the second connecting rod. Sliders 23 are provided at both ends of the first connecting rod and the second connecting rod in contact, and the sliders are arranged in the chutes 181.

[0031] Preferably, a rotary motor 111 is provided on the top surface of the calibration frame. The output end of the rotary motor is coaxially connected to a bidirectional lead screw 19. The bidirectional lead screw passes through the first connecting rod and the second connecting rod respectively, and the thread directions in contact with the first connecting rod and the second connecting rod are opposite.

[0032] In the present utility model, when the two servo motors 11 are started, the servo motors 11 will drive the threaded posts 9 to rotate. The two threaded posts 9 respectively cause the two threaded sleeves to move downward, thereby driving the middle adjusting plate 7 to move downward. When the downward progress of the two threaded sleeves is inconsistent, the adjusting plate 7 will tilt. At this time, the extension plates 3 at both ends of the adjusting plate 7 will extend to increase the length of the adjusting plate 7; the downward movement of the adjusting plate 7 will push the upper pressing block 2 to move downward. The upper pressing block 2 moves downward along the vertical cavity through the limiting rod 5 and the sliding plug 4, so that the upper pressing block 2 can only move in the vertical direction; the adjusting plate 7 compresses the spring 15 through the upper buffer cylinder 6, and the elastic force generated by the spring 15 acts on the connecting plate 12 through the lower buffer cylinder 13, thereby concentrating all the pressure of the adjusting plate 7 in the direction of the vertical central axis of the upper pressing block 2, avoiding the uneven stress on the left and right sides of the upper pressing block 2 caused by the non-synchronization of the threaded posts 9, causing corresponding deformation of the straightened workpiece, and improving the processing accuracy. At the same time, it enters the calibration frame 18, and secondary calibration is realized through the calibration rollers on the first connecting rod and the second connecting rod.

[0033] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An adjustable straightening machine, comprising a protective housing (10), two servo motors (11) and a correction frame (18), characterized in that: The two servo motors (11) are symmetrically fixedly mounted on the upper end surface of the protective shell (10), and a threaded column (9) is fixedly mounted on the output end of each servo motor (11). The lower end of each threaded column (9) penetrates the upper end surface of the protective shell (10) and extends into the protective shell (10). A threaded sleeve is threadedly connected to each threaded column (9). An adjustment plate (7) is commonly arranged between the two threaded sleeves. Cavities are respectively provided at both ends of the adjustment plate (7), and a limit block (8) is slidably connected in each cavity. An extension plate (3) is fixedly mounted on the opposite side of the two limit blocks (8), and the other end of each extension plate (3) penetrates the side wall of the adjustment plate (7) and is rotatably connected to the threaded sleeve. On the side wall of the grooved sleeve, the center of the lower end surface of the adjustment plate (7) is rotatably connected to an upper pressure block (2), and two groups of buffer mechanisms are symmetrically arranged on the side wall of the upper pressure block (2). A lower pressure block (1) is arranged directly below the upper pressure block (2). The correction frame (18) is located at the rear end of the protective shell and at the rear ends of the upper pressure block and the lower pressure block. Side plates with slide grooves (181) are arranged on both sides of the correction frame. A first connecting rod (20) and a second connecting rod (21) are arranged in the two side plates. A plurality of correction rollers (22) are arranged on the same side of the first connecting rod and the second connecting rod. A clamping area is formed between the upper pressure block and the lower pressure block, which is opposite to the correction area formed between the correction rollers on the first connecting rod and the second connecting rod.

2. The adjustable straightening machine according to claim 1, characterized in that: Two vertical cavities are symmetrically provided in the lower pressing block (1), each of the vertical cavities is slidably connected with a sliding plug (4), a limiting rod (5) is vertically fixedly installed at the center of the upper end surface of each sliding plug (4), and the upper end of each limiting rod (5) passes through the upper end surface of the lower pressing block (1) and is fixedly connected to the bottom end surface of the upper pressing block (2).

3. The adjustable straightening machine according to claim 1, characterized in that: The buffer mechanism comprises an upper buffer cylinder (6) and a lower buffer cylinder (13); the upper buffer cylinder (6) is rotatably connected to the bottom end surface of the adjustment plate (7); the lower buffer cylinder (13) is fixedly mounted on the side wall of the upper pressure block (2) via a connecting plate (12); an upper buffer plate (16) is slidably connected inside the upper buffer cylinder (6); and a lower buffer plate (14) is slidably connected inside the lower buffer cylinder (13).

4. The adjustable straightening machine according to claim 3, characterized in that: A buffer rod (17) is fixedly installed between the upper buffer plate (16) and the lower buffer plate (14), and the buffer rod (17) is slidably connected to the upper buffer cylinder (6) and the lower buffer cylinder (13) respectively. Two springs (15) are symmetrically arranged between the upper buffer cylinder (6) and the lower buffer cylinder (13), and the upper and lower ends of each spring (15) are fixedly connected to the side walls of the upper buffer cylinder (6) and the lower buffer cylinder (13) respectively.

5. The adjustable straightening machine according to claim 1, characterized in that: The inner diameter of each threaded sleeve matches the threaded column (9), and threads matching the threaded column (9) are arranged on the inner wall of the threaded sleeve.

6. The adjustable straightening machine according to claim 1, characterized in that: The protective shell (10) is provided with access openings on the front and rear sides.

7. The adjustable straightening machine according to claim 1, characterized in that: A slide groove is arranged at the position where the correction frame contacts the first connecting rod and the second connecting rod, and sliding blocks (23) are arranged at both ends where the first connecting rod and the second connecting rod contact, and the sliding blocks are arranged in the slide groove.

8. The adjustable straightening machine according to claim 7, characterized in that: A rotating motor (111) is arranged on the top surface of the correction frame, and the output end of the rotating motor is coaxially connected to a bidirectional screw rod (19). The bidirectional screw rod passes through a first connecting rod and a second connecting rod respectively, and the threads contacted by the first connecting rod and the second connecting rod are in opposite directions.

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