Infrared temperature measuring clamp for monitoring laser-assisted machining process

Abstract

The utility model discloses an infrared temperature measurement clamp for monitoring a laser-assisted machining process, which integrates a laser positioning technology and a non-contact temperature monitoring function, and aims to solve the problem that a traditional clamp is difficult to synchronously realize high-precision clamping and real-time temperature control in high-temperature sensitive working conditions (such as precision welding, laser additive manufacturing and metal machining). According to the clamp, the infrared thermometer is clamped and positioned, the problem that an existing mechanical clamping device cannot simultaneously monitor the temperature of a laser preheating workpiece and the temperature of a tool in the machining process in the metal machining process is solved, cooperative feedback of the workpiece clamping position and the surface temperature of the workpiece is achieved, and the machining efficiency is improved. Machining errors caused by thermal deformation are effectively avoided, and the process stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser-assisted processing technology, specifically to an infrared temperature measuring fixture for monitoring the laser-assisted processing process. Background Technology

[0002] Driven by rapid development and demand, laser processing technologies (such as laser cutting, welding, and cladding) are widely used in manufacturing, aerospace, and automotive industries due to their high precision, high efficiency, and non-contact characteristics. However, the temperature of the workpiece directly affects the processing quality; excessively high temperatures can lead to material deformation or ablation, affecting accuracy. Real-time temperature monitoring can optimize laser parameters and improve processing efficiency. Traditional laser processing fixtures only focus on fixing functions and lack the ability to dynamically monitor the temperature field, making it difficult to meet the demands of high-precision processing.

[0003] Advantages and application potential of infrared temperature measurement technology: As a non-contact, rapid-response technology, infrared temperature measurement has the following characteristics: Adaptability to high-temperature environments: It can monitor the temperature field distribution in real time in high-temperature laser processing scenarios without contacting the workpiece surface; High precision and flexibility: Resolution can reach 0.01℃, and the overall temperature distribution of the workpiece can be obtained through infrared thermal imaging, facilitating the analysis of the heat-affected zone; Avoidance of processing interference: Its non-contact nature does not obstruct the laser path, making it suitable for complex processing scenarios. However, existing infrared temperature measurement devices are mostly independent of fixture design, lacking integration with clamping functions, resulting in complex installation and difficulty in simultaneous optimization.

[0004] The shortcomings of existing fixture technology and the need for innovation: Current fixture technology mainly focuses on mechanical stability and versatility, such as: modular design: adapting to different workpiece sizes through movable brackets, but still lacking temperature measurement function; anti-interference design: some fixtures use ceramic materials to reduce heat conduction loss, but the problem of temperature measurement integration has not been solved.

[0005] Therefore, a device integrating clamping and infrared temperature measurement functions needs to be developed to achieve the following objectives: clamping and releasing an infrared thermometer while considering factors such as the object's shape, weight, accessibility, and environment. When the clamping device holds the workpiece, it should provide certain force and shape constraints to ensure that the geometric deviation of the workpiece's clamping posture is within a given tolerance band during movement, dwell, and loading. Real-time temperature monitoring while clamping the workpiece reduces equipment complexity; dynamic feedback control is also considered, using temperature data to optimize laser processing parameters and improve process stability. Summary of the Invention

[0006] This invention relates to an infrared temperature measuring fixture for monitoring laser-assisted machining. The fixture clamps and positions an infrared thermometer, solving the problem that existing mechanical clamping devices cannot simultaneously monitor the temperature of the laser-preheated workpiece and the cutting tool during metal processing. It achieves coordinated feedback between the workpiece clamping position and the workpiece surface temperature, effectively avoiding machining errors caused by thermal deformation and improving process stability. The fixture includes:

[0007] The base is fixed at a fixed point, and a strong magnet is located at the bottom of the fixed base; the fixing sleeve includes four fixing bolts; the connecting shaft has cylindrical ends with the same diameter, and the end of the connecting shaft that enters the fixing sleeve has a frosted surface, with the diameter of the cylindrical end slightly smaller than the diameter of the arc portion of the fixing sleeve's hole, so that the fixing sleeve can be fitted in; the clamping frame includes a fixing bracket and two sets of screws and nuts.

[0008] An infrared temperature measuring fixture for monitoring laser-assisted processing is characterized by: a base with a strong magnet at its bottom; a fixing sleeve that can be fitted onto the upper end of the base; the fixing sleeve having six threaded holes and containing four fixing bolts; a connecting shaft with the same cylindrical diameter at both ends; and a frosted end of the connecting shaft that connects to the fixing sleeve with a slightly smaller cylindrical diameter than the diameter of the arc portion of the fixing sleeve's hole, facilitating the fitting of the fixing sleeve. The four fixing bolts of the sleeve are screwed into the threaded holes. A clamping frame with a frosted end passing through one end of the fixing sleeve, having a cylindrical diameter slightly smaller than the diameter of the arc portion of the fixing sleeve, and the same cylindrical diameter as the connecting shaft. The four fixing bolts of the fixing sleeve are screwed into the threaded holes to secure the clamping frame. A clamping frame gasket with threaded holes at both ends; the clamping frame gasket's fastening bolts are screwed into the threaded holes and into a fastening nut for secure engagement.

[0009] In a preferred embodiment of this utility model, a strong magnet is provided at the bottom of the base, the upper cylinder of the base has a rough surface, the diameter of the upper cylinder of the base is slightly smaller than the diameter of the cross-sectional circle of the semi-cylindrical part of the fixed sleeve, and is the same as the diameter of the cylindrical cross-section of the connecting shaft.

[0010] In a preferred embodiment of this utility model, the semi-cylindrical portion of the inner surface of the fixing sleeve has a rough surface, and the cuboid portion of the fixing sleeve has six through holes with threads on the inner surface of the through holes.

[0011] In a preferred embodiment of this utility model, one end face of the connecting shaft is a frosted rough surface, and one end of the connecting shaft can be inserted into the fixing sleeve and contact the rough surface of the semi-cylinder.

[0012] In a preferred embodiment of this utility model, the lower cylindrical end of the clamping frame has a frosted rough surface, the length of the lower part of the clamping frame inserted into the fixing sleeve is adjustable, and the orientation of the lower part of the clamping frame in the fixing sleeve can be adjusted by rotation.

[0013] In a preferred embodiment of this utility model, the fixing bolt is screwed into the threaded hole of the fixing sleeve and contacts the base inside it, the connecting shaft and the lower part of the clamping frame. By increasing the screwing length, the pressure is increased, thereby increasing the friction force with the former to achieve the fixing effect.

[0014] In a preferred embodiment of this utility model, the clamping frame gasket has threaded holes at both ends, and the clamping frame gasket fastening bolts are screwed into the threaded holes and fastening nuts for fastening engagement.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention solves the problem that existing mechanical clamping devices cannot simultaneously monitor the temperature of laser-preheated workpieces and cutting tools during metal processing by using a clamping and positioning infrared thermometer. It achieves coordinated feedback between the workpiece clamping position and the workpiece surface temperature, effectively avoiding processing errors caused by thermal deformation and improving process stability.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connecting shaft structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the fixed sleeve 1 and fixed sleeve 2 of this utility model.

[0023] In the diagram: 1. Strong magnet; 2. Base; 3. Fixing sleeve 1; 4. Threaded hole; 5. Fixing bolt; 6. Connecting shaft; 7. Frosted surface; 8. Fixing sleeve 2; 9. Frosted surface end; 10. Fastening clamp; 11. Fastening nut; 12. Clamping frame washer; 13. Clamping frame washer fastening bolt. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0025] like Figures 1 to 4 As shown

[0026] An infrared temperature measuring fixture device for monitoring laser-assisted processing, such as Figure 1 As shown, including the base, as Figure 2 As shown, the base (2) has a strong magnet (1) at its bottom. The upper end of the base (2) has a rough frosted surface, and the radius of the cylindrical section at the upper end is slightly smaller than the radius of the semicircular arc of the fixed sleeve (3), so that the fixed sleeve 1 (3) can be fitted inside. The structure of the fixed sleeve 1 (3) and the fixed sleeve 2 (8) is as follows: Figure 4 As shown, the semi-cylindrical portion of the inner surface of the fixed sleeve 1 (3) and the fixed sleeve 2 (8) has a rough surface. The cuboid portion of the fixed sleeve 1 (3) and the fixed sleeve 2 (8) has six through holes, and the inner surface of the through holes has threads. The connecting shaft (6) is as follows. Figure 3 As shown, the radius of the cross-section of the frosted surface (7) of one end of the connecting shaft is slightly smaller than the radius of the semicircular arc of the fixed sleeve 1 (3), and the same as the cylindrical radius of the base (2). Four fixing bolts (5) are screwed into the threaded holes (4) of the square part of the fixed sleeve 1 (3) to contact the connecting shaft (6) and the base (2) for positioning and fastening. The other end of the connecting shaft (6) is inserted into one end of the fixed sleeve 2 (8), and the clamping frame (10) has its frosted end (9) passing through the other end of the fixed sleeve 2 (8). The cylindrical diameter of the frosted end (9) is slightly smaller than the diameter of the arc part of the fixed sleeve 2 (8), and the cylindrical diameter of the frosted end (9) of the clamping frame is the same as the cylindrical diameter of the connecting shaft (6). The four fixing bolts of the fixed sleeve 2 (8) are screwed into the threaded holes to fasten the clamping frame. The infrared thermometer is installed on the clamping frame (10) according to the monitoring requirements using the clamping frame pad (12). Threaded holes are provided at the upper end of the clamping frame (10) and both ends of the clamping frame pad (12). The threaded holes of the clamping frame pad (12) are aligned with the threaded holes of the clamping frame (10). The fastening bolts (13) are screwed in through the threaded holes and the fastening nuts to tighten and engage, thus fixing the infrared thermometer. By adjusting the position of the base (2) and adjusting the fixing bolts (5) of the fastening sleeve 1 (3) and the fixing sleeve 2 (8), the infrared thermometer can be lifted up and down, stretched left and right, and rotated freely in the horizontal and vertical directions. This solves the problem that existing mechanical clamping devices cannot simultaneously monitor the temperature of the laser-preheated workpiece and the tool during the metal processing process. It realizes the coordinated feedback between the workpiece clamping position and the workpiece surface temperature, effectively avoids processing errors caused by thermal deformation, and improves process stability.

Claims

1. An infrared temperature measuring fixture device for monitoring laser-assisted processing, characterized in that: The base (2) includes a strong magnet (1) at its bottom. A fixing sleeve 1 (3) can be fitted onto the upper end of the base (2). The fixing sleeve 1 (3) has six threaded holes (4) and contains four fixing bolts (5). The cylindrical diameters at both ends of the connecting shaft (6) are the same. One end of the connecting shaft (6) that connects to the fixing sleeve 1 (3) has a frosted surface (7). The diameter of the cylindrical end of the frosted end is slightly smaller than the diameter of the hole in the arc portion of the fixing sleeve 1 (3) so that the fixing sleeve 1 (3) can be fitted onto it. The four fixing bolts (5) of the fixing sleeve 1 (3) are screwed into the screws. The groove (4), the clamping frame (10), the frosted end (9) of which passes through one end of the fixed sleeve 2 (8), the cylindrical diameter of the frosted end (9) is slightly smaller than the diameter of the arc part of the fixed sleeve 2 (8), the cylindrical diameter of the frosted end (9) of the clamping frame is the same as the cylindrical diameter of the connecting shaft (6), the four fixing bolts (5) of the fixed sleeve 2 (8) are screwed into the threaded hole (4) to tighten the clamping frame (10), the clamping frame gasket (12), the threaded holes at both ends of which are provided, the clamping frame gasket fastening bolt (13) is screwed into the threaded hole and the fastening nut (11) for fastening engagement.

2. The infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The upper cylindrical surface of the base (2) is rough and frosted.

3. The infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The inner surface of the semi-cylindrical portion of the inner surface of the fixed sleeve 1 (3) and the fixed sleeve 2 (8) is a rough frosted surface.

4. The infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The radius of the semi-cylindrical section of the inner surface of the fixed sleeve 1 (3) is slightly larger than the radius of the upper cylinder of the base (2), and the diameter of the hole of the connecting shaft (6) is the same as the diameter of the cylinder of the base (2).

5. An infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The cuboid portion of the fixed sleeve 1 (3) and the fixed sleeve 2 (8) is provided with six threaded holes (4). The threaded holes (4) can engage with the fixing bolts (5). By tightening the fixing bolts (5) in different threaded holes (4), the clamping frame (10), the connecting shaft (6), and the base (2) are fixed.

6. The infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The diameter of the cylinder at the lower frosted end (9) of the clamping frame (10) is the same as the diameter of the cylinder of the connecting shaft (6) and the diameter of the cylinder of the base (2), and is slightly smaller than the diameter of the arc part of the fixed sleeve 2 (8). It can be inserted into the fixed sleeve 2 (8) and pressed against the rough surface of the semi-cylinder.

7. An infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The length of the fixed sleeve inserted into the upper part of the base (2), the connecting shaft (6), and the lower part of the clamping frame (10) is adjustable.

8. An infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The orientation of the connecting shaft (6) and the lower frosted end (9) of the clamping frame can be adjusted by rotation within the fixed sleeve 2 (8).

9. An infrared temperature measuring fixture device for monitoring laser-assisted processing according to claim 1, characterized in that... The upper end of the clamping frame (10) and the end of the clamping frame gasket (12) are provided with four threaded holes of the same radius. The clamping frame gasket fastening bolt (13) can be screwed into the threaded hole and the fastening nut (11) for fastening engagement.

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