High-precision laser cutting equipment for stainless steel parts

Abstract

The invention relates to the technical field of laser cutting equipment, in particular to stainless steel part high-precision laser cutting equipment which comprises a machining table, a cutting mechanism and a fixing mechanism, and the cutting mechanism and the fixing mechanism are arranged on the machining table. The fixing mechanism comprises a rotating disc rotationally installed on the machining table, a containing plate rotationally installed on the rotating disc, clamping blocks slidably installed on the containing plate, a driving assembly driving the clamping blocks to clamp parts, and a first motor driving the rotating disc to rotate. According to the high-precision laser cutting equipment for the stainless steel parts, by arranging the fixing mechanism, when a single part needs to be cut, switching of multiple cutting paths can be achieved without disassembling, meanwhile, switching clamping is achieved, and the problem of cutting dead points is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting, and particularly relates to a high-precision laser cutting equipment for stainless steel parts. BACKGROUND

[0002] The laser cutting equipment is a precision equipment for realizing non-contact cutting by means of high-energy laser beam focusing into a micron-level spot, melting materials and cooperating with gas blowing. The precision of the laser cutting equipment can reach ±0.05 mm, and the cutting speed is several times of that of traditional processes. The laser cutting equipment can quickly process metals, non-metals and composite materials, and has a small heat-affected zone, and is suitable for manufacturing precision parts in the fields of aviation, aerospace and electronics.

[0003] A stainless steel plate cutting equipment, which relates to the technical field of stainless steel plate processing, comprises a laser cutting machine frame, a strip-shaped groove is symmetrically formed in the upper end of the laser cutting machine frame, gear shafts are rotatably installed on the side walls of the laser cutting machine frame, a laser cutting machine controller is fixedly installed on the side wall of the laser cutting machine frame, and the fixing mechanism comprises inner strips, two inner strips are symmetrically fixedly installed in the inner wall of the laser cutting machine frame, sliding strips are slidably installed in the inner strips, first springs are symmetrically fixedly installed on the side walls of the sliding strips, and the ends of the two groups of first springs away from the sliding strips are fixedly connected with the two inner strips. The stainless steel plate can always be kept flat, so that the cut can be kept flat during work, and the problems of unstable distance between the laser focal point and the surface of the stainless steel plate, inconsistent cutting depth, and possible local overcut or undercut of the cutting surface, which affect the flatness and precision of the cutting edge, are effectively avoided.

[0004] However, the device only has the cutting capacity of single stainless steel part at a time, and during each cutting operation, the positioning error of loading causes significant cutting process deviation between different parts, which cannot meet the technical requirements of high-precision synchronous cutting.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. SUMMARY

[0006] The present application relates to the technical field of laser cutting, and particularly relates to a high-precision laser cutting equipment for stainless steel parts.

[0007] To achieve the purpose of the present application, the following technical solutions are adopted: A high-precision laser cutting equipment for stainless steel parts, comprising: a machining table, a cutting mechanism and a fixing mechanism respectively arranged on the machining table. The fixing mechanism comprises: a rotating disc rotatably mounted on the machining table, a placing plate rotatably mounted on the rotating disc, a clamping block slidably mounted on the placing plate, a driving assembly for driving the clamping block to clamp the part, and a motor for driving the rotating disc to rotate.

[0008] Further, the driving assembly comprises: an air cavity fixedly mounted on the bottom of the placing plate, a piston rod slidably mounted in the air cavity, and a guide groove formed on the machining table; one end of the piston rod is inserted into the guide groove; the clamping block is fixedly provided with a sleeve rod, a sleeve is sleeved outside the sleeve rod, the air cavity is communicated with the sleeve through a hose; a spring is arranged between the piston rod and the sleeve.

[0009] Further, the guide groove is composed of a flat groove and a lifting groove; the lifting groove is located on one side of the cutting mechanism.

[0010] Further, the clamping block is divided into front and rear clamping blocks and left and right clamping blocks; the front and rear clamping blocks and the left and right clamping blocks are all provided with sleeve rods and sleeves; and the sleeves are all connected to the air cavity around by hoses.

[0011] Further, the placing plate is further provided with an alternating assembly for driving the clamping blocks to alternately clamp. The alternating assembly comprises: a cutting sleeve rotatably mounted in the air cavity, an air port formed on the cutting sleeve, and a rotating assembly for driving the placing plate to rotate; the air port is located at the communication position of the hose and the air cavity; and the piston rod is slidably mounted in the cutting sleeve.

[0012] Further, the rotating assembly comprises: a gear fixedly mounted outside the air cavity, a toothed ring engaged with the gear, and the toothed ring is fixedly mounted on the machining table.

[0013] Further, the piston is provided with a limiting block; and the cutting sleeve is provided with a limiting groove matched with the limiting block.

[0014] Further, the cutting mechanism comprises: a truss fixedly mounted on the machining table, a first laser cutting head and a second laser cutting head slidably mounted on the truss, a second motor fixedly mounted on the truss, and a threaded rod fixedly connected with the output shaft of the second motor; the threaded rod is threadedly connected with the first laser cutting head and the second laser cutting head.

[0015] Further, the threaded rod is provided with two sections of threads; the two sections of threads are opposite to each other; and the first laser cutting head and the second laser cutting head are respectively connected to the two sections of threads.

[0016] Compared with the prior art, the present application has the following beneficial effects: The stainless steel part high-precision laser cutting equipment sets the cutting mechanism, carries out symmetrical cutting or synchronous cutting of specific path on the part, and effectively reduces the cutting error caused by single cutting head operation.

[0017] The stainless steel part high-precision laser cutting equipment sets the fixing mechanism, realizes the switching of multiple cutting paths without disassembly when cutting a single part, simultaneously realizes the switching of clamping, and avoids the problem of cutting dead point. DETAILED DESCRIPTION

[0018] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are included to provide a further understanding of the application, and are made a part of the specification and are included to provide a further understanding of the application.

[0019] Figure 1 It is a structure schematic view of the stainless steel part high-precision laser cutting equipment; Figure 2 It is a top view of the stainless steel part high-precision laser cutting equipment; Figure 3 It is a structure schematic view of the cutting mechanism; Figure 4 It is a structure schematic view of the fixing mechanism; Figure 5 It is a structure schematic view of the driving assembly; Figure 6 It is a structure schematic view of the alternate assembly; Figure 7 It is a sectional view of the alternate assembly.

[0020] In the figure: 1, machining table; 2, cutting mechanism; 3, fixing mechanism; 31, rotating disc; 32, placing plate; 33, clamping block; 34, driving assembly; 35, motor one; 341, air cavity; 342, piston rod; 343, guide groove; 344, sleeve rod; 345, sleeve; 346, hose; 3431, flat groove; 3432, lifting groove; 331, front and rear clamping blocks; 332, left and right clamping blocks; 36, alternate assembly; 361, air cutting sleeve; 362, air port; 363, rotating assembly; 3631, gear; 3632, tooth ring; 3611, limiting clamping block; 3612, limiting groove; 21, truss; 22, laser cutting head one; 23, laser cutting head two; 24, motor two; 25, threaded rod; 347, spring. DETAILED DESCRIPTION

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the following will make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0022] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. When a component is referred to as "fixed" to another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected" to another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used herein are for illustrative purposes only.

[0023] As shown in Figures 1 to 7 The present application is a high-precision laser cutting equipment for stainless steel parts, which comprises a machining table 1, a cutting mechanism 2 and a fixing mechanism 3 respectively arranged on the machining table 1. The fixing mechanism 3 comprises a rotating disc 31 rotatably mounted on the machining table 1, a placement plate 32 rotatably mounted on the rotating disc 31, a clamping block 33 slidably mounted on the placement plate 32, a driving assembly 34 for driving the clamping block 33 to clamp the parts, and a motor 35 for driving the rotating disc 31 to rotate. When the cutting process of the stainless steel parts is needed, the worker only needs to place the parts to be machined on the mounting plate, and the motor 35 drives the rotating disc 31 to rotate, so that the placement plate 32 is rotated to the lower side of the cutting mechanism 2, which is convenient for subsequent cutting processing. Furthermore, when the rotating disc 31 rotates, the clamping block 33 on the mounting plate will automatically fix the parts placed on the placement plate 32, effectively reducing the manual intervention link and significantly improving the automation level of the device.

[0024] The driving assembly 34 comprises: an air cavity 341 fixedly installed at the bottom of the placement plate 32, a piston rod 342 slidably installed in the air cavity 341, a guide groove 343 opened on the machining table 1; one end of the piston rod 342 is inserted into the guide groove 343; the clamping block 33 is fixedly installed with a sleeve rod 344, a sleeve 345 sleeved outside the sleeve rod 344, and the air cavity 341 is communicated with the sleeve 345 through a hose 346.

[0025] The guide groove 343 is composed of a flat groove 3431 and a lifting groove 3432; the lifting groove 3432 is located on one side of the cutting mechanism 2.

[0026] When the rotating disc 31 starts the rotating action, the piston rod 342 arranged in the guide groove 343 synchronously slides linearly in the guide groove 343. When the piston rod 342 moves along the track of the guide groove 343 to a specific area near the cutting mechanism 2, the guide groove 343 in this area is designed as a lifting groove 3432 structure with gradually shortened groove depth. Based on this special structure, when the piston rod 342 moves to the lifting groove 3432 segment, it will be displaced upward due to the abutting action of the side wall of the lifting groove 3432, thereby driving the piston rod 342 to move linearly upward inside the air cavity 341.

[0027] With the upward movement of the piston in the air cavity 341, the volume of the air cavity 341 gradually decreases, and the internal gas is compressed, thereby generating a corresponding pressure. The pressure is transmitted to the inside of the sleeve 345 through the pre-connected hose 346. The sleeve rod 344 in the sleeve 345 is displaced in the axial direction under the pushing action of the gas pressure, thereby pushing the clamping block 33 to move towards the stainless steel part to be cut, until the clamping block 33 is tightly attached to the part and is completely dead, and finally realizing the automatic fixation of the stainless steel part to be cut The clamping block 33 is divided into front and rear clamping blocks 331 and left and right clamping blocks 332; the front and rear clamping blocks 331 and the left and right clamping blocks 332 are each provided with a sleeve rod 344 and a sleeve 345; and the sleeves 345 are connected to the periphery of the air cavity 341 through the hoses 346.

[0028] In the operation process of the mechanical automatic laser cutting equipment, the technical problem of the existence of an unreachable dead zone (i.e. cutting dead point) in the cutting area caused by the use of a mechanical jaw type clamping mechanism often occurs.

[0029] The placement plate 32 is further provided with an alternating assembly 36 for driving the clamping block 33 to alternately clamp; The alternate assembly 36 comprises a cutting gas sleeve 361 rotatably mounted in the gas cavity 341, a gas port 362 opened on the cutting gas sleeve 361, and a rotating assembly 363 for driving the placement plate 32 to rotate; the gas port 362 is located at the position where the hose 346 communicates with the gas cavity 341; the piston rod 342 is slidably mounted in the cutting gas sleeve 361; and a spring 347 is arranged between the piston rod 342 and the cutting gas sleeve 361.

[0030] The rotating assembly 363 comprises a gear 3631 fixedly mounted outside the gas cavity 341, a tooth ring 3632 engaged with the gear 3631, and the tooth ring 3632 is fixedly mounted on the machining table 1.

[0031] When the motor 35 starts and drives the rotating disc 31 to rotate, the gear 3631 fixedly assembled on the outer wall of the gas cavity 341 precisely engages and drives the tooth ring 3632 arranged in advance. Under the action of the engagement force, the gear 3631 synchronously drives the gas cavity 341 and the placement plate 32 fixedly mounted on the top of the gas cavity 341 to rotate coordinately.

[0032] Through the rotating action of the placement plate 32, when the stainless steel part is moved to the position directly below the cutting mechanism 2, various cutting angles can be flexibly presented. This design effectively optimizes the cutting path planning and significantly improves the precision and quality of the cutting operation.

[0033] In addition, when the gas cavity 341 performs the rotating operation, the cutting gas sleeve 361 rotatably mounted in the gas cavity 341 rotates, and the gas holes opened on the surface of the cutting gas sleeve 361 sequentially realize the gas path communication with different hoses 346. This mechanism realizes the automatic switching function of the gas port 362 and provides reliable guarantee for the gas control in the cutting process.

[0034] It should be emphasized here that when the motor 35 starts and drives the rotating disc 31 to rotate, the rotation of the rotating disc 31 drives the placement plate 32 connected thereto to produce spatial displacement until the placement plate 32 is accurately moved to the working area directly below the cutting mechanism 2. At this time, under the guidance and constraint of the specific structure of the guide groove 343, the piston rod 342 applies pressure to the inside of the cutting gas sleeve 361 along the preset trajectory. The pressure is conducted through the gas path conduction mechanism in the cutting gas sleeve 361, and acts on the driving assembly 34 corresponding to the front and rear clamping blocks 331, so as to make the front and rear clamping blocks 331 stably clamp the stainless steel part placed on the placement plate 32 in the front and rear directions under the pressure driving, and ensure the position stability of the part in the cutting process.

[0035] After the cutting mechanism 2 completes the cutting operation on the stainless steel part, the motor 35 continues to run and drives the turntable 31 to continue rotating. During this process, the placement plate 32 rotates around its own axis under the precise meshing transmission of the gear 3631 and the gear ring 3632. When the placement plate 32 moves directly below the next cutting mechanism 2, the spatial posture of the placement plate 32 is adjusted by precisely controlling the rotation angle of the turntable 31, thereby switching the cutting path. This design allows for efficient switching between different cutting paths when processing a single part with multiple cutting paths without disassembling and reclamping the part, significantly improving processing efficiency and flexibility.

[0036] Furthermore, as the turntable 31 continues to rotate, the piston rod 342 moves along the extension direction of the guide groove 343 to the flat groove 3431. Within the flat groove 3431, the piston rod 342 loses the special constraint of the guide groove 343 and, under the action of the pre-set spring elastic restoring force, resets to its initial position in the opposite direction. Simultaneously, driven by the reset movement of the piston rod 342, the front and rear clamping blocks 331 synchronously release their clamping state on the stainless steel parts and return to their original positions.

[0037] As the air chamber 341 rotates with the turntable 31, the air passages on the surface of the air chamber 341 are switched. Specifically, the air pipe originally connected to the drive assembly 34 of the front and rear clamping blocks 331 is connected to the air pipe connected to the drive assembly 34 of the left and right clamping blocks 332 when the air chamber 341 rotates to a specific angle. In this way, when the piston rod 342 moves upward under the action of the lifting groove 3432 structure during subsequent movement, the pressure it generates is transmitted through the newly connected air passage to the sleeve 345 connected to the left and right clamping blocks 332. The pressure in the sleeve 345 drives the left and right clamping blocks 332 to perform left and right clamping actions on the stainless steel parts, thereby achieving the switching of clamping methods. This flexible switching of clamping methods effectively avoids the cutting dead point problem caused by a single clamping method, ensuring smooth laser cutting in all directions and further improving cutting quality and reliability.

[0038] The piston is equipped with a limiting block 3611; the air-cutting sleeve 361 is equipped with a matching limiting groove 3612. It should be noted that when the air chamber 341 is driven to rotate, the piston rod 342, due to the rigid constraint of the guide groove 343 in the circumferential direction, cannot rotate synchronously with the air chamber 341. Simultaneously, under the dual constraint of the limiting block 3611 on the piston and the limiting groove 3612 inside the air-cutting sleeve 361, the air-cutting sleeve 361 is effectively locked in a fixed position and will not rotate relative to the air chamber 341, thus ensuring the stability of the entire device during operation and the accuracy of the relative positions between the components.

[0039] The cutting mechanism 2 includes: a truss 21 fixedly installed on the processing table 1, a laser cutting head 22 slidably installed on the truss 21, a laser cutting head 23, a motor 24 fixedly installed on the truss 21, and a threaded rod 25 fixedly connected to the output shaft of the motor 24; the threaded rod 25 is threadedly connected to the laser cutting head 22 and the laser cutting head 23. The threaded rod 25 has two sections of thread; the two sections of thread are opposite; the laser cutting head 22 and the laser cutting head 23 are respectively connected to the two sections of thread.

[0040] When the stainless steel part moves directly below the laser cutting head under the drive of the turntable 31, the laser cutting head starts working to cut the stainless steel part. Then, the threaded rod 25 is rotated by the motor 24, so that the laser cutting head moves along the truss 21 to cut the part.

[0041] It should be emphasized that the threaded rod 25 has two sections of thread; the two sections of thread are opposite; the laser cutting head 22 and the laser cutting head 23 are respectively connected to the two sections of thread.

[0042] When the threaded rod 25 rotates under the drive of the second motor 24, based on the principle of threaded transmission, the first laser cutting head 22 and the second laser cutting head 23 will generate relative motion under the action of the thread. Specifically, they will move towards each other or separate away from each other along the axis of the threaded rod 25. This unique structural design allows the first laser cutting head 22 and the second laser cutting head 23 to work together during the cutting process, effectively reducing the cutting errors that may be caused by the operation of a single cutting head by performing symmetrical cutting or synchronous cutting along a specific path on the parts. Especially when performing cutting processes with extremely strict requirements on the error between parts, this design can significantly improve the cutting accuracy and ensure that the processed parts meet high-precision quality standards.

[0043] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0044] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0045] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A high-precision laser cutting device for stainless steel parts, characterized in that, include: A processing table, a cutting mechanism, and a fixing mechanism respectively disposed on the processing table; The fixing mechanism includes: a turntable rotatably mounted on the processing table, a placement plate rotatably mounted on the turntable, a clamping block slidably mounted on the placement plate, a drive assembly for driving the clamping block to clamp the parts, and a motor for driving the turntable to rotate.

2. The high-precision laser cutting equipment for stainless steel parts as described in claim 1, characterized in that, The drive assembly includes: an air chamber fixedly installed at the bottom of the placement plate, a piston rod slidably installed in the air chamber, and a guide groove opened on the processing table; one end of the piston rod is inserted into the guide groove; a sleeve rod is fixedly installed on the clamping block, a sleeve sleeved on the outside of the sleeve rod, and the air chamber is connected to the sleeve through a hose; a spring is provided between the piston rod and the air-cutting sleeve.

3. The high-precision laser cutting equipment for stainless steel parts as described in claim 2, characterized in that, The guide groove consists of a flat groove and a lifting groove; the lifting groove is located on one side of the cutting mechanism.

4. The high-precision laser cutting equipment for stainless steel parts as described in claim 3, characterized in that, The clamping blocks are divided into front and rear clamping blocks and left and right clamping blocks; each of the front and rear clamping blocks and the left and right clamping blocks is provided with a sleeve rod and a sleeve; and the sleeves are all connected to the air chamber around the perimeter through a flexible hose.

5. The high-precision laser cutting equipment for stainless steel parts as described in claim 4, characterized in that, The placement plate is also provided with an alternating component for driving the clamping blocks to alternately clamp; The alternating assembly includes: a cut-off sleeve rotatably installed in the air chamber, an air port opened on the cut-off sleeve, and a rotating assembly for driving the placement plate to rotate; the air port is located at the connection between the hose and the air chamber; the piston rod is slidably installed in the cut-off sleeve.

6. The high-precision laser cutting equipment for stainless steel parts as described in claim 5, characterized in that, The rotating assembly includes: a gear fixedly installed on the outside of the air chamber, a gear ring meshing with the gear, and the gear ring fixedly installed on the processing table.

7. The high-precision laser cutting equipment for stainless steel parts as described in claim 6, characterized in that, The piston is provided with a limiting block; the gas cutting sleeve is provided with a matching limiting groove.

8. The high-precision laser cutting equipment for stainless steel parts as described in claim 1, characterized in that, The cutting mechanism includes: a truss fixedly installed on the processing table, a laser cutting head one and a laser cutting head two slidably installed on the truss, a motor two fixedly installed on the truss, and a threaded rod fixedly connected to the output shaft of the motor two; the threaded rod is threadedly connected to the laser cutting head one and the laser cutting head two.

9. A high-precision laser cutting equipment for stainless steel parts as described in claim 8, characterized in that, The threaded rod has two sections of thread; the two sections of thread are opposite; the first laser cutting head and the second laser cutting head are respectively connected to the two sections of thread.

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