Differential type laser pipe cutting machine front clamp

Abstract

The utility model discloses a differential type laser pipe cutting machine front clamp which comprises a machine base and a chuck body, the chuck body is fixedly arranged on an inner sleeve of the machine base, the chuck body comprises a front clamp outer ring and a disc face, the front clamp outer ring is fixedly connected with a gas distribution ring rotor on the machine base, and the disc face is fixedly connected with the machine base. The disc face is arranged on the outer surface of the front clamping outer ring in an embedded mode, first sliding blocks and first sliding rails are arranged on the outer surface of the disc face, the two first sliding rails and the two first sliding blocks are correspondingly arranged, and the two first sliding rails and the two first sliding blocks are symmetrically arranged on the upper side and the lower side of the disc face. And the two sets of first sliding blocks are arranged on the two sets of first sliding rails in a sliding mode correspondingly, roller frames Y are installed at the opposite ends of the two sets of first sliding blocks correspondingly, and first rollers are rotationally arranged on the roller frames Y. The utility model has the advantages of simple structure, high reliability, improved precision, convenient installation, no debugging, full utilization of the internal space, reduced external diameter and reduced rotational inertia.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-end equipment, and specifically relates to a front clamp of a differential laser tube cutting machine. Background Art

[0002] The pneumatic front clamp is a key component of the laser tube cutting machine. The utility model is a new type of high-precision and high-reliability laser tube cutting machine front clamp developed for the motion mechanism with small cylinder swing space and long life requirements. During the clamping process, the driving element needs to swing and the two teams of rollers need to work in a differential state. Therefore, the cylinder is called a "differential laser tube cutting machine front clamp", or "differential front clamp" for short.

[0003] When the laser tube cutting machine is working, not only its accuracy, clamping force, and reliability must meet higher requirements, but also the moment of inertia must be reduced as much as possible. These have become the difficulties in the development of the front card of the laser tube cutting machine. The use of differential structure is to solve the above problems from the structural point of view. The main reasons are:

[0004] 1. The existing laser tube cutting machine has a complex front card structure and cannot solve the impact of high-temperature metal dust, resulting in poor reliability;

[0005] 2. The cylinder in the existing chuck is fixed at one end, which cannot fully utilize the thrust of the driving element, resulting in insufficient clamping force. In severe cases, it will cause a "stuck" phenomenon, thus affecting reliability;

[0006] 3. The original popular pneumatic drive form is fixed by the cylinder tail, which causes the outer diameter of the chuck to be too large. Usually, the ratio of the outer diameter of the chuck to the inner diameter of the middle hole (abbreviated as: outer inner diameter ratio) exceeds 2.8, and the moment of inertia is obviously too large, resulting in slow response of the servo drive of the laser tube cutting machine, reducing the working efficiency of the whole machine. For this reason, we propose a differential laser tube cutting machine front clamp. Utility Model Content

[0007] The purpose of the utility model is to provide a differential laser tube cutting machine front clamp to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present utility model provides the following technical solution: A front chuck of a differential laser pipe cutting machine, comprising a machine base and a chuck body. The chuck body is fixedly arranged on the upper surface of the machine base. The chuck body includes a front chuck outer ring and a disk surface. The front chuck outer ring is fixedly connected to an inner sleeve in the machine base. The disk surface is embedded in the outer surface of the front chuck outer ring. A first slider and a first slide rail are arranged on the outer surface of the disk surface. There are two groups of the first slide rail and the first slider corresponding to each other. The two groups of the first slide rail and the two groups of the first slider are symmetrically arranged on the upper and lower sides of the disk surface. And the two groups of the first sliders are respectively slidably arranged on the two groups of the first slide rails. Roller frames Y are installed at the opposite ends of the two groups of the first sliders. A first roller is rotatably arranged on the roller frame Y;

[0009] A second slider and a second slide rail are arranged on the outer surface of the disk surface. There are two groups of the second slide rail and the second slider corresponding to each other. The two groups of the second slide rail and the two groups of the second slider are symmetrically arranged on the left and right sides of the disk surface. And the two groups of the second sliders are respectively slidably arranged on the two groups of the second slide rails. Roller frames X are installed at the opposite ends of the two groups of the second sliders. A second roller is rotatably arranged on the roller frame X;

[0010] A function disk X and a function disk Y are rotatably arranged inside the front chuck outer ring. First function grooves are symmetrically and synchronously formed on the function disk X. Second function grooves are symmetrically and synchronously formed on the function disk Y. Pneumatic components are correspondingly arranged on the surfaces of the function disk X and the function disk Y. Levers are inserted into the first function grooves and the second function grooves. The first function grooves and the second function grooves cooperate with the ends of the power arms of the levers to drive the levers to rotate. The resistance arms of the levers drive the first slider and the second slider to move radially along the first slide rail and the second slide rail.

[0011] Preferably, positioning holes for installation and fixation are formed at the edges of the machine base. There are at least two groups of the positioning holes arranged on both sides of the machine base.

[0012] Preferably, heightening blocks are installed on the outer surfaces of the left and right sides of the disk surface. The second slide rail is fixedly installed on the outer surface of the heightening block.

[0013] Preferably, the function disk X and the function disk Y are arranged in a staggered manner, and the central included angle between the first function groove and the second function groove is 90 degrees.

[0014] Preferably, the rotation angles of the function disk X and the function disk Y are set to 0-45°, and the function disk X and the function disk Y rotate in opposite directions.

[0015] Preferably, the first function groove is set as an arc-shaped groove, and the second function groove is set as a non-circular curve-shaped groove.

[0016] Preferably, the pneumatic component includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, the cylinder tails of the first cylinder and the second cylinder are connected to the function disk X, the piston heads of the first cylinder and the second cylinder are connected to the function disk Y, the cylinder tails of the third cylinder and the fourth cylinder are connected to the function disk Y, and the piston heads of the third cylinder and the fourth cylinder are connected to the function disk X.

[0017] Preferably, a chip removal groove is provided on the outer surface of the chuck body.

[0018] Preferably, a servo interface for electrically connecting to the pneumatic component is fixedly provided on the top outer surface of the front card outer ring.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) The utility model adopts a thin-walled cylinder, a front chuck designed according to a differential structure, and a function disk as

[0021] It is used to clamp and synchronize a pair of rollers on the same coordinate axis. It has a simple structure, high reliability, improved precision, convenient installation and rotation, no debugging required, and makes full use of the internal space, reduces the outer diameter and reduces the moment of inertia.

[0022] (2) The utility model adopts the first roller and the second roller to clamp the pipe. The first roller and the second roller can rotate flexibly after clamping without affecting the forward and backward movement of the pipe, thereby facilitating the processing of the pipe;

[0023] (3) The utility model adopts an involute non-circular curve as the design of the second function groove, so that the normal pressure of the groove works in the optimal state when the groove is working, which greatly improves the clamping force. It also adopts a two-in-one groove sliding drive and a synchronous structure, which improves the overlapping structure of the cylinder end face and the piston, improves the clamping force and also improves the accuracy. In addition, the overall design of the differential drive in the utility model makes the outer and inner diameter ratio of the chuck less than 2.5, which effectively reduces the moment of inertia. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a top view of the structure of the utility model;

[0026] Figure 3 For this utility model Figure 1 Middle BB section view;

[0027] Figure 4 For this utility model Figure 3 Middle DD section view;

[0028] Figure 5 Schematic diagram of the structure of the function disk X of the present utility model;

[0029] Figure 6 Schematic diagram of the structure of the function disk Y of the present utility model.

[0030] In the figure: 1, machine base; 2, chuck body; 3, front chuck outer ring; 4, disk surface; 5, first slider; 6, first slide rail; 7, roller frame Y; 8, first roller; 9, second slider; 10, second slide rail; 11, roller frame X; 12, second roller; 13, function disk X; 14, function disk Y; 15, first function groove; 16, second function groove; 17, pneumatic component; 171, first cylinder; 172, second cylinder; 173, third cylinder; 174, fourth cylinder; 18, positioning hole; 19, heightening block; 20, chip removal notch; 21, servo interface; 25, inner sleeve; 26, bearing; 27, air distribution ring stator; 28, air distribution ring rotor. Specific embodiments

[0031] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1 - 6 , the present utility model provides a technical solution: a front chuck of a differential laser pipe cutting machine, including a machine base 1 and a chuck body 2, the chuck body 2 is fixedly arranged on the inner sleeve 25 in the machine base 1, the chuck body 2 includes a front chuck outer ring 3 and a disk surface 4, the front chuck outer ring 3 is fixedly connected to the machine base 1, the disk surface 4 is embedded on the outer surface of the front chuck outer ring 3, the outer surface of the disk surface 4 is provided with a first slider 5 and a first slide rail 6, there are two groups of the first slide rail 6 and the first slider 5 correspondingly arranged, the two groups of the first slide rail 6 and the two groups of the first slider 5 are symmetrically arranged on the upper and lower sides of the disk surface 4, and the two groups of the first slider 5 are respectively slidably arranged on the two groups of the first slide rail 6, the opposite ends of the two groups of the first slider 5 are both equipped with a roller frame Y7, and a first roller 8 is rotatably arranged on the roller frame Y7;

[0033] The outer surface of the disk surface 4 is provided with second sliders 9 and second slide rails 10. There are two groups of the second slide rails 10 and the second sliders 9 correspondingly arranged. The two groups of the second slide rails 10 and the two groups of the second sliders 9 are symmetrically arranged on the left and right sides of the disk surface 4. And the two groups of the second sliders 9 are respectively slidably arranged on the two groups of the second slide rails 10. The relative ends of the two groups of the second sliders 9 are both equipped with roller frames X11, and second rollers 12 are rotatably arranged on the roller frames X11.

[0034] A function disk X13 and a function disk Y14 are rotatably arranged inside the front snap outer ring 3. First function slots 15 are symmetrically and synchronously formed on the function disk X13. Second function slots 16 are symmetrically and synchronously formed on the function disk Y14. Pneumatic components 17 are correspondingly arranged on the surfaces of the function disk X13 and the function disk Y14. Levers are inserted into the first function slots 15 and the second function slots 16. The cooperation between the first function slots 15 and the second function slots 16 and the ends of the power arms of the levers drives the levers to make rotational movements. The resistance arms of the levers drive the first slider 5 and the second slider 9 to make radial movements along the first slide rail 6 and the second slide rail 10.

[0035] In this embodiment, preferably, positioning holes 18 for installation and fixation are formed at the edge of the machine base 1, and there are at least two groups of the positioning holes 18 arranged on both sides of the machine base 1; through the arranged positioning holes 18, the machine base 1 can be conveniently disassembled and assembled.

[0036] In this embodiment, preferably, heightening blocks 19 are installed on the outer surfaces of the left and right sides of the disk surface 4, and the second slide rails 10 are fixedly installed on the outer surfaces of the heightening blocks 19; through the arranged heightening blocks 19, the first slide rail 6 and the second slide rail 10 can be made not to be in the same plane, so that the first roller 8 and the second roller 12 are not in the same plane, and thus the first roller 8 and the second roller 12 will not affect each other during movement.

[0037] In this embodiment, preferably, in order to facilitate the function disk X13 and the function disk Y14 not to affect each other during rotation, the function disk X13 and the function disk Y14 are arranged in a staggered manner, and the central included angle between the first function slot 15 and the second function slot 16 is 90 degrees.

[0038] In this embodiment, preferably, in order to facilitate the clamping and loosening during the rotation of the function disk X13 and the function disk Y14, the rotation angles of the function disk X13 and the function disk Y14 are set to 0 - 45°, and the function disk X13 and the function disk Y14 rotate in opposite directions.

[0039] In this embodiment, preferably, in order to facilitate the movement of the first slider 5 and the second slider 9 driven by the lever when the function disk X13 and the function disk Y14 rotate, the first function groove 15 is set as an arc-shaped groove, and the second function groove 16 is set as a non-circular curve groove.

[0040] In this embodiment, preferably, the pneumatic assembly 17 includes a first cylinder 171, a second cylinder 172, a third cylinder 173, and a fourth cylinder 174. The cylinder tails of the first cylinder 171 and the second cylinder 172 are connected to the function disk X13, the piston heads of the first cylinder 171 and the second cylinder 172 are connected to the function disk Y14, the cylinder tails of the third cylinder 173 and the fourth cylinder 174 are connected to the function disk Y14, and the piston heads of the third cylinder 173 and the fourth cylinder 174 are connected to the function disk X13; when the chuck is clamped, the first cylinder 171 and the second cylinder 172 contract, and the third cylinder 173 and the fourth cylinder 174 advance; when the chuck is loosened, the first cylinder 171 and the second cylinder 172 advance, and the third cylinder 173 and the fourth cylinder 174 contract. In this way, whether it is clamping or loosening, each function disk receives 4 forces, 2 are pushed, and 2 are pulled. Its maximum clamping force is greater than that of conventional chucks, and its minimum clamping force can still be set by the air pressure.

[0041] In this embodiment, preferably, a chip removal slot 20 is provided on the outer surface of the chuck body 2; by providing the chip removal slot 20, it is convenient to discharge the cutting debris during pipe cutting.

[0042] In this embodiment, preferably, in order to facilitate the electrical connection of the pneumatic assembly 17 and facilitate control of the operation, a servo interface 21 for electrically connecting to the pneumatic assembly 17 is fixedly provided on the top outer surface of the front chuck outer ring 3.

[0043] The working principle and advantages of the present utility model:

[0044] When the first cylinder 171, the second cylinder 172, the third cylinder 173, and the fourth cylinder 174 are inflated, the first cylinder 171 and the second cylinder 172 contract, and the third cylinder 173 and the fourth cylinder 174 advance, causing the function disk X13 and the function disk Y14 to move in opposite directions. At the same time, through the cooperation of the first function groove 15 and the second function groove 16 with the end of the power arm on the lever and driving the lever to rotate, the resistance arm of the lever drives the first slider 5 to move radially along the first slide rail 6, and the second slider 9 to move radially along the second slide rail 10. The four sliders move simultaneously towards the center of the disk surface 4, and through the installed roller frames X11 and roller frames Y7, the first roller 8 and the second roller 12 cooperate to clamp the pipe to be cut. In addition, the first roller 8 and the second roller 12 can rotate flexibly after clamping, without affecting the forward and backward movement of the pipe fittings, thus facilitating the processing of pipe fittings.

[0045] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A front clamp of a differential laser tube cutting machine, comprising a machine base (1) and a chuck body (2), wherein the chuck body (2) is fixedly arranged on an inner sleeve (25) in the machine base (1), and the chuck body (2) comprises a front clamp outer ring (3) and a disk surface (4), wherein the front clamp outer ring (3) is fixedly connected to the inner sleeve (25) in the machine base (1), and the disk surface (4) is embedded in the outer surface of the front clamp outer ring (3), characterized in that: The outer surface of the disk surface (4) is provided with a first slider (5) and a first slide rail (6), and two groups of the first slide rail (6) and the first slider (5) are provided correspondingly, and the two groups of the first slide rail (6) and the two groups of the first slider (5) are symmetrically arranged on the upper and lower sides of the disk surface (4), and the two groups of the first slider (5) are respectively slidably arranged on the two groups of the first slide rail (6), and the opposite ends of the two groups of the first slider (5) are equipped with roller frames Y (7), and the roller frames Y (7) are rotatably provided with first rollers (8); The outer surface of the disk surface (4) is provided with a second slider (9) and a second slide rail (10), and two groups of the second slide rail (10) and the second slider (9) are provided correspondingly, and the two groups of the second slide rail (10) and the two groups of the second slider (9) are symmetrically arranged on the left and right sides of the disk surface (4), and the two groups of the second sliders (9) are respectively slidably arranged on the two groups of the second slide rails (10), and the opposite ends of the two groups of the second sliders (9) are both equipped with roller frames X (11), and the roller frames X (11) are rotatably provided with second rollers (12); The front card outer ring (3) is internally rotatably provided with a function disk X (13) and a function disk Y (14); the function disk X (13) is symmetrically and synchronously provided with a first function groove (15); the function disk Y (14) is symmetrically and synchronously provided with a second function groove (16); the surfaces of the function disk X (13) and the function disk Y (14) are correspondingly provided with pneumatic components (17); the first function groove (15) and the second function groove (16) are internally inserted with levers; the first function groove (15) and the second function groove (16) cooperate with the end of the power arm of the lever to drive the lever to rotate; the resistance arm of the lever drives the first slider (5) and the second slider (9) to move radially along the first slide rail (6) and the second slide rail (10).

2. The differential laser tube cutting machine front card according to claim 1, characterized in that: Positioning holes (18) for installation and fixing are provided at the edge of the machine base (1), and at least two groups of positioning holes (18) are provided on both sides of the machine base (1).

3. The differential laser tube cutting machine front card according to claim 1, characterized in that: The left and right outer surfaces of the disk surface (4) are provided with padding blocks (19), and the second slide rail (10) is fixedly mounted on the outer surfaces of the padding blocks (19).

4. The differential laser tube cutting machine front card according to claim 1, characterized in that: The function disk X (13) and the function disk Y (14) are staggered, and the central angle between the first function slot (15) and the second function slot (16) is 90 degrees.

5. The differential laser tube cutting machine front card according to claim 4, characterized in that: The rotation angles of the function disk X (13) and the function disk Y (14) are set to 0-45 degrees, and the function disk X (13) and the function disk Y (14) rotate in opposite directions.

6. The differential laser tube cutting machine front card according to claim 1, characterized in that: The first function slot (15) is configured as a circular arc curve slot, and the second function slot (16) is configured as a non-circular curve slot.

7. The differential laser tube cutting machine front card according to claim 1, characterized in that: The pneumatic assembly (17) comprises a first cylinder (171), a second cylinder (172), a third cylinder (173) and a fourth cylinder (174); the cylinder tails of the first cylinder (171) and the second cylinder (172) are connected to the function disk X (13); the piston heads of the first cylinder (171) and the second cylinder (172) are connected to the function disk Y (14); the cylinder tails of the third cylinder (173) and the fourth cylinder (174) are connected to the function disk Y (14); and the piston heads of the third cylinder (173) and the fourth cylinder (174) are connected to the function disk X (13).

8. The differential laser tube cutting machine front card according to claim 1, characterized in that: The outer surface of the chuck body (2) is provided with a chip removal groove (20).

9. The differential laser tube cutting machine front card according to claim 1, characterized in that: A servo interface (21) for electrical connection with the pneumatic component (17) is fixedly provided on the top outer surface of the front card outer ring (3).

Images