Self-centering manual clamping chuck of laser pipe cutting machine

Abstract

The utility model discloses a self-centering manual clamping chuck of a laser pipe cutting machine, which comprises a manual clamping mechanism and an electric rotating disc used for pushing the manual clamping mechanism to rotate, the manual clamping mechanism comprises a shell and two self-centering clamping mechanisms which are arranged in a staggered manner and are fixed in the shell, the self-centering clamping mechanism comprises two oppositely-arranged mounting blocks, two polished shafts and a positive and negative tooth double-end lead screw, wherein the two polished shafts are connected to the two ends of the mounting blocks in a sliding and penetrating mode, the positive and negative tooth double-end lead screw is connected between one ends of the two mounting blocks in a threaded mode, and rolling rod assemblies are arranged on the opposite side faces of the two mounting blocks. In order to reduce the cost and the manufacturing cost of the chuck of the laser pipe cutting machine, pneumatic clamping is changed into manual clamping on the premise that the functions of precise centering, reliable clamping and precise rotating are guaranteed, the structure is greatly simplified, and therefore the purposes of reducing the cost and the price are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser tube cutting machines, and more specifically to a self-centering manual clamping chuck of a laser tube cutting machine. Background Art

[0002] The chuck that clamps and supports the tube in the laser tube cutting machine is a very important and precise component of the Y-axis. Its most important and basic function is to provide precise centering, reliable clamping, and precise rotation of the cut tube. Currently, standard laser tube cutting machines generally use a self-centering pneumatic clamping gear-driven rotating chuck, which has high centering accuracy, reliable clamping, high rotation accuracy, and high efficiency. However, its disadvantages are: a relatively complex structure, high cost, and expensive price. A large number of users have a strong demand for low-cost, high-quality, and economical laser tube cutting machines. Utility Model Content

[0003] The main purpose of the present invention is to solve the above-mentioned problems and provide a self-centering manual clamping chuck for a laser tube cutting machine, which can reduce the cost and manufacturing price of the laser tube cutting machine chuck. Under the premise of ensuring the functions of precise centering, reliable clamping and precise rotation, the pneumatic clamping is changed to manual clamping, which greatly simplifies the structure, thereby achieving the purpose of reducing costs and prices.

[0004] The technical solution adopted by the present invention is: a self-centering manual clamping chuck of a laser tube cutting machine, which includes a manual clamping mechanism and an electric rotating disk for driving the manual clamping mechanism to rotate, the manual clamping mechanism includes a shell and two self-centering clamping mechanisms that are staggered and fixed inside the shell, the self-centering clamping mechanism includes two mounting blocks arranged opposite to each other, two optical axes that can be slidably connected at both ends of the mounting blocks, and a positive and negative double-ended lead screw that is screwed between one end of the two mounting blocks, a roller assembly is provided on the facing side of the two mounting blocks, and the outer surface of the positive and negative double-ended lead screw is provided with a clockwise external thread and a counterclockwise external thread from the middle to both ends respectively.

[0005] A first support is installed between the two ends of the positive and negative double-ended lead screw and the adjacent optical axis, and a second support is installed on the other optical axis.

[0006] A first support and a second support of one of the self-centering clamping mechanisms are fixed with a pad.

[0007] The roller assembly comprises a bearing seat fixed on the side surface of the mounting block and two rods rotatably mounted on the bearing seat.

[0008] The beneficial effects of the present invention are as follows: in order to reduce the cost and manufacturing price of the laser tube cutting machine chuck, the present invention changes the pneumatic clamping to manual clamping under the premise of ensuring the functions of precise centering, reliable clamping and precise rotation, thereby greatly simplifying the structure and achieving the purpose of reducing costs and prices.

[0009] This utility model retains the structure of gear transmission rotation to ensure that the function of precise rotation is not affected. Precision centering is achieved by using a trapezoidal positive and negative precision screw. Two vertically arranged trapezoidal positive and negative precision screws can ensure precise centering in both the X and Z directions to achieve centering of circular, square, and rectangular cross-section pipes. The trapezoidal positive and negative precision screws achieve both precise centering and reliable clamping. Because the trapezoidal thread screw has a self-locking characteristic, after clamping the pipe, the screw slider will not shift or loosen during the chuck rotation and feeding process, and the pipe clamping is highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0011] Figure 2 This is an exploded view of the present invention.

[0012] Figure 3 This is a schematic diagram of the cooperation of the two self-centering clamping mechanisms of the utility model. DETAILED DESCRIPTION

[0013] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0014] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0016] Please refer to Figures 1 to 3 , which is a self-centering manual clamping chuck of a laser tube cutting machine of the utility model, includes a manual clamping mechanism 10 and an electric rotating disk 20 for driving the manual clamping mechanism 10 to rotate. The electric rotating disk is a conventional accessory in this technical field and a standard part of the technology in this field. Those skilled in the art can purchase it on the market or assemble it by themselves. It mainly includes a mounting seat, a rotary bearing, a driven large gear, a driving small gear, a reducer, a servo motor and other accessories. The rotary bearing is driven to rotate by the servo motor. Its structure and matching relationship are not elaborated in detail here.

[0017] In this embodiment, the manual clamping mechanism 10 includes a shell 11 and two self-centering clamping mechanisms 12 arranged in a staggered manner and fixed inside the shell 11. The two automatic clamping mechanisms 12 are arranged in a staggered manner to achieve clamping of the pipe in the X and Y axis directions.

[0018] The self-centering clamping mechanism 12 includes two mounting blocks 121 arranged opposite to each other, two optical shafts 122 that can be slidably connected to the two ends of the mounting blocks 121, and a double-ended lead screw 123 with positive and negative threads screwed between one end of the two mounting blocks 121. A roller assembly 124 is provided on the side facing each other of the two mounting blocks 121. The outer surface of the double-ended lead screw 123 with positive and negative threads is respectively provided with clockwise external threads and counterclockwise external threads from the middle to the two ends, so that the two mounting blocks 121 can move toward or in opposite directions after rotating the double-ended lead screw 123 with positive and negative threads.

[0019] In this embodiment, in order to increase the stability of movement, a first support A is installed between the two ends of the positive and negative double-ended lead screw 123 and its adjacent optical axis, and a second support B is installed on the other optical axis.

[0020] In this embodiment, a first support and a second support of one of the self-centering clamping mechanisms are fixed with a spacer C, so that the two self-centering clamping mechanisms can be stacked without interfering with each other.

[0021] In this embodiment, the roller assembly 124 includes a bearing seat 124A fixed on the side of the mounting block 121 and two rods 124B rotatably mounted on the bearing seat 124A. Through the rod assembly 124, the material can be penetrated and then pushed forward under the push of an external force, that is, clamping can be achieved while ensuring the movement of the material.

[0022] In order to reduce the cost and manufacturing price of the laser tube cutting machine chuck, the utility model changes the pneumatic clamping to manual clamping under the premise of ensuring the functions of precise centering, reliable clamping and precise rotation, thereby greatly simplifying the structure and achieving the purpose of reducing costs and prices.

[0023] This utility model retains the structure of gear transmission rotation to ensure that the function of precise rotation is not affected. Precision centering is achieved by using a trapezoidal positive and negative precision screw. Two vertically arranged trapezoidal positive and negative precision screws can ensure precise centering in both the X and Z directions to achieve centering of circular, square, and rectangular cross-section pipes. The trapezoidal positive and negative precision screws achieve both precise centering and reliable clamping. Because the trapezoidal thread screw has a self-locking characteristic, after clamping the pipe, the screw slider will not shift or loosen during the chuck rotation and feeding process, and the pipe clamping is highly reliable.

[0024] The main difference between this utility model and the original self-centering pneumatic clamping gear-driven rotary standard chuck is the centering and clamping method. The original self-centering pneumatic clamping gear-driven rotary standard chuck adopts pneumatic clamping and an independent centering mechanism, while the utility model adopts manual clamping and a trapezoidal positive and negative precision screw to achieve centering and clamping at the same time.

[0025] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-centering manual clamping chuck for a laser tube cutting machine, comprising a manual clamping mechanism and an electric rotating disk for driving the manual clamping mechanism to rotate, characterized in that: The manual clamping mechanism includes a shell and two self-centering clamping mechanisms that are staggered and fixed inside the shell. The self-centering clamping mechanism includes two mounting blocks arranged opposite to each other, two optical shafts that can be slidably connected to the two ends of the mounting blocks, and a double-ended lead screw with positive and negative threads screwed between one end of the two mounting blocks. A roller assembly is provided on the side facing each other of the two mounting blocks, and the outer surface of the double-ended lead screw with positive and negative threads is provided with a clockwise external thread and a counterclockwise external thread from the middle to its two ends.

2. A self-centering manual clamping chuck for a laser tube cutting machine according to claim 1, characterized in that: A first support is installed between the two ends of the positive and negative double-ended lead screw and the adjacent optical axis, while a second support is installed on the other optical axis.

3. A self-centering manual clamping chuck for a laser tube cutting machine as claimed in claim 2, characterized in that: A first support and a second support of one of the self-centering clamping mechanisms are fixed with a pad.

4. A self-centering manual clamping chuck for a laser tube cutting machine as claimed in claim 3, characterized in that: The roller assembly comprises a bearing seat fixed on the side surface of the mounting block and two rods rotatably mounted on the bearing seat.

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