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CN-121972815-A - Laser polisher

CN121972815ACN 121972815 ACN121972815 ACN 121972815ACN-121972815-A

Abstract

The invention relates to the technical field of laser processing, in particular to a laser polisher which comprises a substrate, a floating mounting plate, a laser focusing module, a rotary press roller assembly, a follow-up temperature sensor, a pre-pressing adjusting module and a refrigerating system, wherein the substrate is fixedly connected with the tail end of a machine tool spindle or a mechanical arm, the floating mounting plate is connected to the substrate in a sliding manner through a guide mechanism and can do floating motion perpendicular to the surface of a workpiece relative to the substrate, the laser focusing module is fixedly connected to the substrate and is used for outputting high-energy laser beams to irradiate and soften the surface material of the workpiece, the rotary press roller assembly is fixedly connected to the floating mounting plate and comprises two hanging seats and a press roller body, the top ends of the hanging seats are fixedly connected to the floating mounting plate, bearings are arranged at the bottom ends of the hanging seats, and stable rolling pressure is always kept when the surface of the workpiece is raised, so that laser polishing is not simple any more, and the surface quality can be strengthened and finished through a rolling method after laser polishing.

Inventors

  • ZHAO WEIGANG
  • Cong Yongwei
  • Luan Honglin

Assignees

  • 青岛祥睿福智能科技有限公司

Dates

Publication Date
20260505
Application Date
20260311

Claims (8)

  1. 1. A laser polishing machine is characterized by comprising a base plate (1), a floating mounting plate (2), a laser focusing module (3), a rotary press roller assembly, a follow-up temperature sensor (4), a pre-pressing adjusting module and a refrigerating system, wherein the base plate (1) is fixedly connected with the tail end of a machine tool spindle or a mechanical arm, the floating mounting plate (2) is slidably connected with the base plate (1) through a guide mechanism and can do floating motion perpendicular to the surface of a workpiece relative to the base plate (1), the laser focusing module (3) is fixedly connected with the base plate (1) and is used for outputting a high-energy laser beam to irradiate and soften the surface material of the workpiece, the rotary press roller assembly is fixedly connected with the floating mounting plate (2), the rotary press roller assembly comprises two hanging seats (5) and a press roller body (6), the top ends of the hanging seats (5) are fixedly connected with the floating mounting plate (2), the bottom ends of the press roller body (6) are rotatably connected with the two bearings (7) and are positioned behind the laser focusing module (3) along the feeding direction, the floating pressing roller body is used for carrying out floating motion on the surface of the workpiece after laser softening, the pressing roller assembly is fixedly connected with the front-end-contact area of the press roller body (6) through the rolling sensor (8), the device comprises a substrate (1), a floating mounting plate (2), a pre-pressing adjusting module, a refrigerating system and a compression roller body (6), wherein the pre-pressing adjusting module is used for measuring the surface temperature of a workpiece to be rolled in real time, the pre-pressing adjusting module is connected between the substrate (1) and the floating mounting plate (2) and used for applying pre-pressing force towards the workpiece direction to the floating mounting plate (2), and the refrigerating system is connected with the compression roller body (6) and used for conveying refrigerating gas to the compression roller body (6) so that the refrigerating effect is transferred towards the pressing direction by means of the pre-pressing force.
  2. 2. The laser grinding machine according to claim 1, wherein the refrigerating system comprises a central shaft (9), a cooling channel (10) penetrating through the central shaft (9), rotary joints (11) rotatably connected to two ends of the central shaft (9) and a plurality of exhaust ports (12) formed in the central shaft (9), the compression roller body (6) is fixedly connected to the central shaft (9), an air cavity (13) is formed in the compression roller body, the air cavity (13) is communicated with the exhaust ports (12) and used for receiving refrigerating gas conveyed by the cooling holes, and the refrigerating gas is transmitted to a pressing direction through the compression roller body (6).
  3. 3. The laser grinding machine according to claim 2, wherein the guiding mechanism is a linear guide rail pair, a guide rail (14) of the linear guide rail pair is vertically fixed on the base plate (1), a sliding block (15) of the linear guide rail pair is fixedly connected with the floating mounting plate (2), and the sliding block (15) is slidably arranged on the guide rail (14).
  4. 4. The laser polishing machine according to claim 3, wherein the follow-up temperature sensor (4) is an infrared radiation thermometer or a colorimetric thermometer, one end of the connecting plate (8) is fixedly connected to the floating mounting plate (2) upwards, the other end of the connecting plate extends downwards to the front edge of a contact area between the press roll body (6) and a workpiece, a bending part (17) is integrally formed at the end, an acute angle of the bending part (17) faces the front edge of the contact area between the press roll body (6) and the workpiece, the follow-up temperature sensor (4) is fixedly mounted on the bending part (17), and a sensor detection end is aligned with the front edge of the contact area.
  5. 5. The laser grinding machine according to claim 4, characterized in that the bearing (7) is a ceramic ball bearing or a high temperature resistant all ceramic bearing, and the material of the press roll body (6) is polycrystalline diamond or cubic boron nitride.
  6. 6. The laser grinding machine according to claim 5, wherein the pre-pressing adjusting module comprises a spring element (18) and an adjusting screw (19), the top end of the adjusting screw (19) is connected with a fixing seat (20) through a threaded connecting hole, the fixing seat (20) is fixedly connected to the base plate (1), the spring element (18) is sleeved on the adjusting screw (19), the floating mounting plate (2) is slidably sleeved on the adjusting screw (19), one end of the adjusting screw (19) is abutted to the floating mounting plate (2), and the other end of the adjusting screw is abutted to the base plate (1).
  7. 7. The laser grinder of claim 6, further comprising a controller (16), the controller (16) being electrically connected to the follow-up temperature sensor (4) and the laser focusing module (3), respectively, the controller (16) being configured to receive an actual temperature value fed back by the follow-up temperature sensor (4) and compare the actual temperature value with a preset target temperature threshold (28), to decrease the laser power or increase the feed rate of the machine spindle if the actual temperature value exceeds an upper limit of the target temperature threshold (28), and to increase the laser power or decrease the feed rate of the machine spindle if the actual temperature value is below a lower limit of the target temperature threshold (28).
  8. 8. The laser grinder according to claim 7, wherein a baffle plate (21) is fixedly connected to the laser focusing module (3), and the baffle plate (21) reaches vertically downwards to the bottom of the laser emitting head.

Description

Laser polisher Technical Field The invention relates to the technical field of laser processing, in particular to a laser polisher. Background In the field of machine tool machining, workpiece surface polishing is a key process for improving product precision and surface quality, is widely applied to a plurality of industries such as die manufacturing, precision part machining and the like, belongs to a machine tool type laser machining system with intelligent laser cutting equipment, and shares core technical foundation and application scene. Along with the popularization of novel materials, a laser polishing machine is used as an important branch of machine tool type laser processing equipment, the core technology of the laser polishing machine is identical to that of intelligent laser cutting equipment, the processing treatment of workpieces is realized by means of accurate control of high-energy laser beams, and the core technology links of laser focusing, machine tool spindle/mechanical arm adaptation, processing process stability control and the like are highly consistent. The intelligent laser grinding and polishing equipment also adopts the laser focusing module to output high-energy laser beams to act on the surface of the workpiece, so that the non-contact, high-precision and high-efficiency core advantages of the machine tool type laser processing equipment are continued, the follow-up shaping and temperature control structure is optimized according to the polishing requirement of the surface of the workpiece, the defects of the traditional processing technology are overcome, the technical development direction and the industrial application value of the intelligent laser grinding and polishing equipment are highly matched with the development trend of the machine tool type laser processing field, and the intelligent laser grinding and polishing equipment has the technical innovation and the industrial practicability required by priority inspection. At present, the laser polishing equipment has the defects that the traditional laser polishing is used for removing materials by simply relying on the heat effect, the surface polished by the laser cannot be treated secondarily, the functions of thermal coordination and real-time perception are lacked, the effective control of the laser temperature during the polishing of the working surface is difficult to ensure, and the quality of the polished surface is influenced. Disclosure of Invention The invention provides a laser polisher, which comprises a base plate, a floating mounting plate, a laser focusing module, a rotary press roller assembly, a follow-up temperature sensor, a pre-pressing adjusting module and a refrigerating system, wherein the base plate is fixedly connected with the tail end of a machine tool spindle or a mechanical arm, the floating mounting plate is connected to the base plate in a sliding mode through a guide mechanism and can do floating motion perpendicular to the surface of a workpiece relative to the base plate, the laser focusing module is fixedly connected to the base plate and is used for outputting a high-energy laser beam to irradiate and soften the surface material of the workpiece, the rotary press roller assembly is fixedly connected to the floating mounting plate and comprises two hanging seats and a press roller body, the top ends of the hanging seats are fixedly connected to the floating mounting plate, the bottom ends of the press roller body are provided with bearings, two ends of the press roller body are rotatably connected to the two bearings, the press roller body is located behind the laser focusing module along the feeding direction, the follow-up temperature sensor is fixedly connected to the floating mounting plate through a connecting plate, the sensing end of the follow-up temperature sensor points to the front edge of a workpiece contact area of the floating press roller body and is used for measuring the surface temperature of the workpiece in real time, the pre-pressing adjusting module is connected to the pre-pressing air compressing air to the pre-pressing adjusting module, and the pre-pressing air is used for transmitting pre-pressing air to the refrigerating system to the pre-pressing air towards the compressing mounting plate. Preferably, the refrigerating system comprises a central shaft, a cooling channel penetrating through the central shaft, rotary joints rotatably connected to two ends of the central shaft and a plurality of exhaust ports arranged on the central shaft, wherein the compression roller body is fixedly connected to the central shaft, an air cavity is formed in the compression roller body and is communicated with the exhaust ports and used for receiving refrigerating gas conveyed by the cooling holes, and the refrigerating gas is transmitted to the pressing direction through the compression roller body. Preferably, the guide mechanism is a linear guide rail pair, a guide rail