A device and method for capturing transient chips in cutting processing

Abstract

The present invention relates to a device and method for capturing transient chips during cutting. The device includes a machining push assembly, a clamping assembly, and a guide assembly. The machining push assembly includes a cutting blade and a push member, the push member being fixedly connected to the cutting blade via a connecting member. The guide assembly includes a slide rail and a cover plate. The cover plate is provided with a U-shaped hole, the U-shaped hole opening facing the push member. The cover plate is connected to the slide rail via a guide bolt at the U-shaped hole. The cover plate is connected to the clamping assembly via a connecting element. The clamping assembly is detachably connected to the slide rail via a fixing member. The cover plate is provided with a recessed area that cooperates with the push head of the push member. Compared with the prior art, the present invention can capture the chip morphology during laser-assisted machining, ensure the surface integrity of the machined and unmachined surfaces, and can be used for the research and explanation of the mechanism of laser-assisted machining.

Description

Technical Field

[0001] The present invention relates to the technical field of laser-assisted machining, and in particular to a device and method for capturing transient chips in cutting machining. Background Art

[0002] The excess material removed during a cutting process is called chips. Chip formation is a complex process, with different chip formation mechanisms under different conditions, resulting in different chip shapes. Through extensive experimental and theoretical analysis, it is generally believed that material deformation occurs in three regions during cutting. This suggests that material deformation during laser-assisted machining is similar to that without laser assistance.

[0003] However, there is no direct evidence demonstrating the exact deformation of materials during laser-assisted machining. Existing laser-assisted machining methods do not monitor the chip generation process, instantaneous chip morphology, or microstructure during machining. Typically, the chips obtained after machining are separated from the workpiece, failing to elucidate the instantaneous chip generation and overall workpiece morphology. Therefore, the existing technology lacks a device that can clearly monitor the state of the material during laser-assisted machining. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a cutting processing transient chip capture device and method that can capture the cutting chips in the instantaneous shape during cutting processing.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] According to one aspect of the present invention, a transient chip capture device for cutting processing is provided, comprising a processing pushing assembly, a clamping assembly and a guide assembly, the processing pushing assembly comprising a cutting knife and a pushing member, the pushing member being fixedly connected to the cutting knife via a connecting member, the guide assembly comprising a slide rail and a cover plate, a U-shaped hole being provided on the cover plate, the U-shaped hole opening being directed toward the pushing member, the cover plate being connected to the slide rail via a guide bolt at the U-shaped hole, the cover plate being connected to the clamping assembly via a connecting element, the clamping assembly being detachably connected to the slide rail via a fixing member, and the cover plate being provided with a recessed area cooperating with the pushing head of the pushing member.

[0007] Furthermore, a groove that penetrates on one side is provided at the top of the slide rail, with the end of the groove facing the side away from the pushing head of the pushing member, and the bottom end of the clamping component cooperates with the groove at the top of the slide rail.

[0008] Furthermore, the clamping assembly includes a base and a pressure block, the pressure block is a long strip member with a rectangular cross section, and the base is a long strip member with an L-shaped cross section. The base and the pressure block are connected by a clamping member and clamp the workpiece.

[0009] Furthermore, the clamping member between the base and the pressing block is a bolt, including a first clamping member and a second clamping member, and is located at both ends of the pressing block.

[0010] Furthermore, the fixing member connecting the clamping assembly and the slide rail includes a first fixing member and a second fixing member, and the connection points are located at both ends of the base.

[0011] Furthermore, the bottom surface of the slide rail is a plane, and the slide rail is located on the machine tool.

[0012] Furthermore, the guide bolts connecting the cover plate and the slide rail include a first guide bolt and a second guide bolt, and the U-shaped holes at the connection are located at both ends of the cover plate.

[0013] Furthermore, the connecting piece, the fixing piece and the connecting element are all bolts.

[0014] Furthermore, the connection point where the slide rail and the cover plate are bolted together is a threaded hole, the connection point where the slide rail and the clamping assembly are bolted together is a threaded hole, and the connection point where the clamping assembly and the cover plate are bolted together is a threaded hole.

[0015] According to another aspect of the present invention, a method for capturing transient chips in cutting is provided, comprising the following steps:

[0016] The workpiece is fixedly clamped on the clamping assembly, and the clamping assembly is fixed on the slide rail through a fixing piece, and the slide rail is fixed on the machine tool;

[0017] Use a cutting knife to calibrate the workpiece. After calibrating, press the cover onto the clamping assembly through the connector.

[0018] Connect and fix the cover plate and the clamping assembly through the connecting piece, remove the fixing piece between the clamping assembly and the slide rail, and release the connection and fixation between the clamping assembly and the slide rail;

[0019] Adjust the cutting depth and cut with the cutter until the pusher contacts and pushes the cover plate, so that the cover plate, the clamping assembly and the workpiece move along the slide rail;

[0020] The cover, clamping assembly and workpiece are allowed to leave the slide and fall onto the machine tool, and the cutting knife and workpiece are separated from each other.

[0021] 1. Compared to the prior art, the present invention incorporates a pusher fixed to the cutting blade, a slide rail with a groove, and a cover plate structure that drives the workpiece to slide along the groove of the slide rail under the push of the pusher. The cover plate is connected to the slide rail with a U-shaped hole opening facing the pusher. The cover plate can move in the opposite direction of the U-shaped hole opening while maintaining a vertical constraint. Therefore, after the pusher collides with the cover plate, the cover plate slides along the slide rail with the clamping device and falls onto the machine tool, thereby completing the separation of the tool and material. The sliding movement achieves relative stillness between the tool head and the workpiece during cutting. When the workpiece, along with the clamping assembly and cover plate, separates from the slide rail and falls into the machine tool, a workpiece and chips are obtained that ensure the surface integrity of the chips, machined surface, and unmachined surface during laser-assisted machining. This has a significant impact on the research and interpretation of the mechanism of laser-assisted machining.

[0022] 2. By fixing the clamping assembly on the slide rail, the cutting depth during the emergency stop process can be guaranteed by tool setting before transient capture.

[0023] 3. The present invention can be used for both laser-assisted machining and conventional cutting, and experimental comparison can be performed to further clarify the mechanism of the laser-assisted machining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the overall schematic diagram of the device for capturing the instantaneous shape during the cutting process;

[0025] Figure 2 Exploded diagram of the device for capturing the instantaneous shape of the cutting process;

[0026] Figure 3 A schematic diagram of the push component of the device for capturing the instantaneous shape of the cutting process;

[0027] Figure 4 Schematic diagram of the clamping assembly of the device for capturing the instantaneous shape during the cutting process;

[0028] Figure 5 Schematic diagram of the guide assembly of the instantaneous shape capture device during the cutting process.

[0029] In the figure, 1. processing push assembly, 11. cutting knife, 12. connecting member, 13. pushing member, 2. clamping assembly, 21. base, 22. pressure block, 23. first fixing member, 24. first clamping member, 25. second clamping member, 26. second fixing member, 3. guide assembly, 31. slide rail, 32. cover plate, 33. first guide bolt, 34 second guide bolt, 35. threaded hole. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] The present invention provides a laser-assisted processing transient chip capture device, which keeps the tool and the material relatively still at a certain moment when the material is processed by laser to generate chips, thereby preserving the transient state, so as to facilitate subsequent research on the transient state of the material during the laser-assisted processing process.

[0032] like Figure 1-Figure 5 As shown, the device includes a processing and pushing component 1, a clamping component 2 and a guide component 3. The processing and pushing component 1 includes a cutting knife 11, a connecting member 12 and a pushing member 13. The clamping component 2 includes a base 21, a pressure block 22, a first fixing member 23, a first clamping member 24, a second clamping member 25 and a second fixing member 26. The guide component 3 includes a slide rail 31, a cover plate 32, a first guide bolt 33 and a second guide bolt 34.

[0033] The cutting blade 11 can be installed on a milling machine to process the material to be processed. In this embodiment, the cutting blade 11 is a laser processing blade head.

[0034] Pushing member 13 is secured to cutting blade 11 via connector 12. Pushing member 13 includes a push head for pushing cover plate 32 while capturing chips, thereby maintaining a relatively stationary state between the workpiece and cutting blade 11. The connection between pushing member 13 and cutting blade 11 is threaded, though the specific connection method is not limited.

[0035] The cover plate 32 is positioned above the slide rail 31. It has U-shaped holes on both sides, opening onto the pusher 13, for bolt connection to the slide rail 31. A recessed area is located in the center of the cover plate 32, which mates with the pusher head of the pusher 13. A through hole is also located in the center of the cover plate 32, allowing a bolt to pass through and connect to the clamping assembly 2.

[0036] The clamping assembly 2 includes a base 21 and a pressure block 22. The pressure block is an elongated member with a rectangular cross-section, while the base 21 is an elongated member with an L-shaped cross-section. The L-shaped protrusion of the base 21 is designed to match the shape of the pressure block 22. The base 21 and the pressure block 22 are connected by bolts, namely a first clamping member 24 and a second clamping member 25, to clamp the workpiece in between. Threaded holes are provided at both ends of the base 21 for the bolted connection between the clamping assembly 2 and the slide rail 31 via the first fixing member 23 and the second fixing member 26. A threaded hole is provided above the base 21 for the bolted connection between the clamping assembly 2 and the cover plate 32 via the connecting element.

[0037] The slide rail 31 is generally flat, square, with a flat bottom and a single-sided groove extending through it. The groove's end faces away from the push head of the pusher 13. The groove's cross-sectional shape matches the bottom end of the base 21, allowing the clamping assembly 2 to slide within the groove along its opening. A threaded hole 35 is provided on the top of the slide rail 31 for bolting to the clamping assembly 2 via the first and second fixing members 23 and 26. A threaded hole is also provided on each side of the slide rail 31 for bolting to the cover plate 32 via the first and second guide bolts 33 and 34.

[0038] In this embodiment, since a single-sided through groove is provided at the top of the slide rail 31, the two connections between the slide rail 31 and the clamping assembly 2 are located at the two ends of the groove axis on the slide rail 31 and are located at different plane heights, which are the top surface of the slide rail 31 and the bottom surface of the groove respectively. The two connections between the base 21 and the slide rail 31 are matched with the corresponding positions of the slide rail 31 in height.

[0039] As a preferred embodiment, the first fixing member 23 and the second fixing member 26 connecting the clamping assembly 2 and the slide rail 31 are M3 bolts, and the first guide bolt 33 and the second guide bolt 34 connecting the cover plate 32 and the slide rail 31 are M12 bolts.

[0040] When capturing chips, first fix the clamping assembly 2 and the workpiece on the slide rail 31 with M3 bolts, and press the slide rail 31 to a certain position on the machine tool with a pressure plate, and then perform tool setting. After tool setting is completed, press the cover plate 32 onto the clamping assembly 2 with two M12 bolts, and pass a bolt through the bolt hole above the cover plate 32 and the clamping assembly 2 to fix the two. At this time, remove the M3 bolts that fix the clamping assembly 2 and the slide rail 31 so that the clamping assembly 2 and the slide rail 31 can move relative to each other along the groove direction. After adjusting the cutting depth, cutting is performed. Since the connection between the cover plate 32 and the slide rail 31 is a U-shaped hole with an opening facing the processing push assembly 1, the cover plate 32 can move in the opposite direction of the U-shaped hole opening while the M12 bolts remain screwed in. Therefore, after the processing push assembly 1 collides with the cover plate 32, the cover plate 32 slides along the slide rail 31 with the clamping assembly 2 and falls onto the machine tool, thereby completing the separation of the tool and the material. During sliding, the workpiece and the cutting blade 11 are relatively stationary, thereby ensuring the generation of chips and the instantaneous shape of the chips after the processing is completed.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A cutting process transient chip capture device, characterized in that: The invention comprises a processing pushing assembly (1), a clamping assembly (2) and a guide assembly (3), wherein the processing pushing assembly (1) comprises a cutting knife (11) and a pushing member (13), wherein the pushing member (13) is fixedly connected to the cutting knife (11) via a connecting member (12), and the guide assembly (3) comprises a slide rail (31) and a cover plate (32), wherein the cover plate (32) is provided with a U-shaped hole, wherein the opening of the U-shaped hole faces the pushing member (13), and the cover plate (32) is connected to the slide rail (31) via a guide bolt at the U-shaped hole, and the cover plate (32) is connected to the clamping assembly (2) via a connecting element, and the clamping assembly (2) is detachably connected to the slide rail (31) via a fixing member, and the cover plate (32) is provided with a recessed area that matches the pushing head of the pushing member (13); The top of the slide rail (31) is provided with a groove that passes through on one side, the end of the groove faces the side away from the pushing head of the pushing member (13), and the bottom end of the clamping assembly (2) cooperates with the groove at the top of the slide rail (31); The clamping assembly (2) comprises a base (21) and a pressing block (22), wherein the pressing block (22) is a long strip member with a rectangular cross section, and the base (21) is a long strip member with an L-shaped cross section, and the base (21) and the pressing block (22) are connected by a clamping member and clamp the workpiece; The clamping member between the base (21) and the pressing block (22) is a bolt, comprising a first clamping member (24) and a second clamping member (25), and is located at both ends of the pressing block (22); The fixing member comprises a first fixing member (23) and a second fixing member (26), and the connection points between the clamping assembly (2) and the slide rail (31) are located at both ends of the base (21).

2. A cutting transient chip capture device according to claim 1, characterized in that: The bottom surface of the slide rail (31) is a plane, and the slide rail (31) is located on the machine tool.

3. The cutting transient chip capture device according to claim 1, characterized in that: The guide bolts include a first guide bolt (33) and a second guide bolt (34), and the number of the U-shaped holes is two and they are located at both ends of the cover plate (32).

4. A cutting transient chip capture device according to any one of claims 1 to 3, characterized in that: The connecting piece (12), the fixing piece and the connecting element are all bolts.

5. The cutting transient chip capture device according to claim 4, characterized in that: The connection point where the slide rail (31) and the cover plate (32) are bolted is a threaded hole, the connection point where the slide rail (31) and the clamping assembly (2) are bolted is a threaded hole (35), and the connection point where the clamping assembly (2) and the cover plate (32) are bolted is a threaded hole.

6. A method for capturing transient chips in cutting processing based on the device according to any one of claims 1 to 3, characterized in that: The following steps are involved: The workpiece is fixedly clamped on the clamping assembly (2), and the clamping assembly (2) is fixed on the slide rail (31) through a fixing member, and the slide rail (31) is fixed on the machine tool; Using a cutting knife (11) to align the workpiece, after which the cover plate (32) is pressed onto the clamping assembly (2) via a connecting piece; The cover plate (32) and the clamping assembly (2) are connected and fixed by a connecting piece, and the fixing piece between the clamping assembly (2) and the slide rail (31) is removed to release the connection and fixation between the clamping assembly (2) and the slide rail (31); Adjust the cutting depth and cut with the cutter (11) until the pusher (13) contacts and pushes the cover (32), so that the cover (32) together with the clamping assembly (2) and the workpiece moves along the slide rail (31); The cover plate (32), the clamping assembly (2) and the workpiece are allowed to leave the slide rail and fall onto the machine tool, and the cutting knife (11) and the workpiece are disengaged.

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