Pulsed laser non-resonant assisted polishing apparatus

Abstract

This invention relates to a pulsed laser asynchronous assisted grinding device, comprising an asynchronous grinding structure and a pulsed laser. Both the asynchronous grinding structure and the pulsed laser are mounted on a machine tool and located on one side of a workpiece clamped on the machine tool. The pulsed laser emits laser light onto the workpiece's machining surface to adjust its surface plasticity. The asynchronous grinding structure includes a frame, a drive assembly, and a front-end grinding assembly mounted on the frame. The drive assembly drives the front-end grinding assembly to reciprocate asynchronously relative to the workpiece along the length of the machine tool to apply an impact force to the machining surface. Simultaneously, the drive assembly drives the front-end grinding assembly to rotate around the length of the machine tool by a preset angle to grind the workpiece. This allows the machining surface to bear a certain residual compressive stress under the impact force, offsetting the residual tensile stress applied to the machining surface by the pulsed laser, thereby ensuring the surface finish of the machining surface.

Description

Technical Field

[0001] The present invention relates to the field of laser polishing technology, and in particular to a pulsed laser non-resonant assisted polishing device. Background Technology

[0002] Particle-reinforced metal matrix composites are widely used in the defense industry and national economy due to their excellent mechanical properties. However, while particle-reinforced metal matrix composites have good mechanical properties such as hardness, they also have relatively weak plasticity and toughness, making them difficult to machine.

[0003] To address this, a pulsed laser-assisted grinding device has been proposed. This device includes a grinding structure and a pulsed laser. The pulsed laser emits laser light onto the surface of the workpiece to enhance the surface plasticity of the material, thereby facilitating the grinding structure to perform grinding, cutting, and other mechanical processing operations on the workpiece.

[0004] However, when a pulsed laser is used to emit laser light onto the surface of a workpiece to change its surface plasticity, residual tensile stress will be generated on the machined surface of the workpiece, which will affect the surface machining quality of the workpiece. Summary of the Invention

[0005] To solve the above-mentioned technical problems, or at least partially solve them, embodiments of the present invention provide a pulsed laser non-resonant assisted polishing device.

[0006] This invention provides a pulsed laser non-resonant assisted polishing device, which is used to be mounted on a machine tool and can reciprocate relative to the machine tool along the width direction of the machine tool; the pulsed laser non-resonant assisted polishing device includes a non-resonant polishing structure and a pulsed laser;

[0007] The non-resonant grinding structure and the pulsed laser are both disposed on the machine tool and located on the same side of the workpiece clamped on the machine tool. The pulsed laser is used to emit laser light onto the machining surface of the workpiece to adjust the surface plasticity of the machining surface.

[0008] The non-resonant grinding structure includes a frame and a drive assembly and a front-end grinding assembly disposed on the frame. The drive assembly is used to drive the front-end grinding assembly to reciprocate non-resonantly relative to the workpiece along the length direction of the machine tool to apply an impact force to the machining surface. At the same time, the drive assembly drives the front-end grinding assembly to rotate around the length direction of the machine tool by a preset angle to grind the workpiece.

[0009] In some embodiments, the drive assembly includes a braking structure and a skewed flexible hinge that drives the braking structure, the skewed flexible hinge being disposed between the braking structure and the front grinding assembly and connected to the front grinding assembly.

[0010] The braking structure is used to drive the obliquely curved flexible hinge to reciprocate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool as an axis, so as to link the front-end grinding assembly to reciprocate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool as an axis by a preset angle.

[0011] In some embodiments, the braking structure is provided in two, and the two braking structures are spaced apart along the height direction of the machine tool and symmetrically arranged with respect to the length direction of the machine tool; the obliquely bent flexible hinge is provided in two, and each of the braking structures corresponds to one of them.

[0012] Each of the aforementioned oblique bending flexible hinges includes two oblique surface transmission structures arranged sequentially along the length direction of the machine tool. The oblique surface transmission structures of the two oblique bending flexible hinges are symmetrically arranged with respect to the length direction of the machine tool, and the sides of the two oblique surface transmission structures of the same oblique bending flexible hinge that are close to each other form abutting oblique surface.

[0013] In some embodiments, each of the braking structures includes a piezoelectric brake and a baffle connected to one end of the piezoelectric brake near the obliquely bent flexible hinge;

[0014] The baffle plate abuts against the corresponding obliquely curved flexible hinge, and the piezoelectric brake is used to drive the baffle plate to move along the length direction of the machine tool, so as to drive the obliquely curved flexible hinge to reciprocate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle.

[0015] In some embodiments, the front-end grinding assembly includes a front-end connecting block and a grinding head disposed at one end of the front-end connecting block away from the braking structure; the front-end connecting block is connected to two of the obliquely bent flexible hinges.

[0016] In some embodiments, the front-end connecting block includes a connecting block and two transmission blocks located at the end of the connecting block away from the grinding head;

[0017] The two transmission blocks are spaced apart along the height direction of the machine tool and respectively abut against the corresponding obliquely bent flexible hinges; the connecting block is connected to the grinding head.

[0018] In some embodiments, a force detection component is provided on the non-resonant grinding structure, the force detection component being used to detect the grinding force applied to the workpiece by the front-end grinding component.

[0019] In some embodiments, the force detection assembly includes a force gauge and a connecting plate. The connecting plate is disposed at the bottom of the frame and connected to the force gauge. The force gauge is used to detect the grinding force applied to the workpiece by the front-end grinding assembly.

[0020] In some embodiments, the machine tool is provided with a first sliding portion extending along the width direction of the machine tool, and the pulsed laser non-resonant polishing device is provided with a second sliding portion at a position corresponding to the first sliding portion. The pulsed laser non-resonant auxiliary polishing device moves relative to the machine tool through the cooperation of the first sliding portion and the second sliding portion.

[0021] In some embodiments, one of the first sliding portion and the second sliding portion is a slide groove extending along the length direction of the machine tool, and the other of the first sliding portion and the second sliding portion is a slide rail that can slide along the slide groove.

[0022] The technical solution provided by the embodiments of the present invention has the following advantages compared with the prior art:

[0023] This invention provides a pulsed laser non-resonant assisted grinding device, which is mounted on a machine tool and can reciprocate relative to the machine tool along its width. The device includes a non-resonant grinding structure and a pulsed laser. Both the non-resonant grinding structure and the pulsed laser are mounted on the machine tool and located on the same side of a workpiece clamped thereon. The pulsed laser emits laser light onto the workpiece's machining surface to adjust its surface plasticity. The non-resonant grinding structure includes a frame, a drive assembly, and a front-end grinding assembly mounted on the frame. The drive assembly drives the front-end grinding assembly to reciprocate non-resonantly relative to the workpiece along the length of the machine tool to apply an impact force to the machining surface. Simultaneously, the drive assembly also drives the front-end grinding assembly to rotate around the length of the machine tool by a preset angle to grind the workpiece. In other words, the pulsed laser non-resonant assisted grinding device provided in this embodiment of the invention, in addition to using a pulsed laser to emit laser light onto the workpiece surface to adjust the surface plasticity of the workpiece and using a drive assembly of the non-resonant grinding structure to drive the front-end grinding assembly to rotate around the length direction of the machine tool by a preset angle to grind the workpiece surface, also uses a drive assembly to drive the front-end grinding assembly to reciprocate non-resonantly along the length direction of the machine tool, thereby applying an impact force to the workpiece surface. This allows the workpiece surface to bear a certain residual compressive stress under the impact force, thus offsetting the residual tensile stress applied to the workpiece surface by the pulsed laser. As a result, the residual compressive stress and residual tensile stress on the workpiece surface are offset to a certain extent, thereby ensuring the surface processing quality of the workpiece surface. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the pulsed laser non-resonant assisted polishing device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the non-resonant polishing structure of the pulsed laser non-resonant assisted polishing device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the front-end grinding component of the non-resonant grinding structure 1 of the pulsed laser non-resonant assisted grinding device according to an embodiment of the present invention.

[0029] Among them, 1. Non-resonant grinding structure; 11. Frame; 12. Drive assembly; 121. Braking structure; 122. Inclined flexible hinge; 123. Inclined transmission structure; 124. Abutting inclined surface; 125. Piezoelectric brake; 126. Baffle; 13. Front grinding assembly; 131. Front connecting block; 132. Grinding head; 133. Connecting block; 134. Transmission block; 2. Pulsed laser; 3. Workpiece; 31. Machining surface; 4. Force detection assembly; 41. Force gauge; 42. Connecting plate. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the embodiments of the present invention, the solutions of the embodiments of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0031] Numerous specific details are set forth in the following description in order to provide a thorough understanding of the embodiments of the invention, but the embodiments of the invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0032] Reference Figures 1 to 3 As shown, this embodiment provides a pulsed laser non-resonant assisted grinding device, which is used to be mounted on a machine tool and can reciprocate relative to the machine tool along the width direction of the machine tool.

[0033] The pulsed laser asynchronous assisted grinding device includes an asynchronous grinding structure 1 and a pulsed laser 2. Both the asynchronous grinding structure 1 and the pulsed laser 2 are mounted on a machine tool and located on the same side of the workpiece 3 clamped on the machine tool. The pulsed laser 2 is used to emit laser light onto the machining surface 31 of the workpiece 3 to adjust the surface plasticity of the machining surface 31.

[0034] The non-resonant grinding structure 1 includes a frame 11, a drive assembly 12 and a front-end grinding assembly 13 disposed on the frame 11. The drive assembly 12 is used to drive the front-end grinding assembly 13 to reciprocate non-resonantly relative to the workpiece 3 along the length direction of the machine tool to apply an impact force to the machining surface 31. At the same time, the drive assembly 12 drives the front-end grinding assembly 13 to rotate around the length direction of the machine tool by a preset angle to grind the workpiece 3.

[0035] For example, the machine tool in this embodiment can be a lathe or the like.

[0036] It should be noted that the purpose of the pulsed laser 2 emitting laser light onto the machining surface 31 of the workpiece 3 is to reduce material ablation while increasing the plasticity of the particles in the particle-reinforced metal matrix composite, thereby increasing the amount of particles removed during the grinding process and suppressing their intrusion into the metal matrix. The resulting effects include reducing residual compressive stress caused by particles intruding into the metal matrix, lowering the probability of particle breakage, and improving surface quality.

[0037] Specifically, since the relative motion speed between the workpiece 3 and the contact position of the front-end grinding assembly 13 is approximately a straight line, linear scratches are easily generated on the machined surface 31. Therefore, the front-end grinding assembly 13 is rotated at a preset angle around the length direction of the machine tool to achieve rotational vibration. The purpose is to change the movement direction of the abrasive grains on the front-end grinding assembly 13, reduce scratches, and improve surface quality.

[0038] It should be noted that during the specific grinding process, the workpiece 3 rotates around its central axis, thereby contacting the front grinding component 13 to perform the grinding operation on the processing surface 31 of the workpiece 3.

[0039] In practice, the entire pulsed laser non-resonant assisted grinding device can be slidably mounted on the machine tool, allowing it to reciprocate relative to the machine tool along its width, thereby performing grinding on the entire machining surface 31 of the workpiece 3 clamped on the machine tool. Specifically, the width direction of the machine tool can be referenced... Figures 1 to 3 y direction shown.

[0040] Specifically, during the processing operation, the pulsed laser 2 emits laser light onto the processing surface 31 of the workpiece 3. By emitting laser light onto the processing surface 31, the microstructure of the workpiece 3 material can be altered, and the hardness of the material can be reduced, thereby improving the plasticity and toughness of the material to facilitate grinding. Simultaneously, the drive assembly 12 drives the front-end grinding assembly 13 to rotate along the length of the machine tool (refer to...). Figures 1 to 3 After rotating the axis (in the z direction shown) by a preset angle, the surface of the machined surface 31, which has been adjusted for plasticity, is ground.

[0041] It should be noted that in this embodiment, the operation of the pulsed laser 2 and the operation of the front-end grinding assembly 13 are carried out synchronously. However, the laser emitted by the pulsed laser 2 needs to always be in front of the processing trajectory of the front-end grinding assembly 13, so that the front-end grinding assembly 13 always performs grinding operation on the processing surface 31 that has been adjusted and plasticized by the laser.

[0042] Furthermore, since the pulsed laser 2 emits a laser to the machining surface 31 to adjust the surface plasticity of the machining surface 31, residual tensile stress will occur on the machining surface 31. Therefore, in this embodiment, when the front-end grinding component 13 is driven by the driving component 12 to rotate around the machine tool at a preset angle to grind the machining surface 31, the front-end grinding component 13 is also driven to perform non-resonant reciprocating vibration along the length of the machine tool, thereby applying an impact force to the machining surface 31, thereby ensuring that residual compressive stress can be generated on the machining surface 31 to overcome or offset the residual tensile stress on the machining surface 31, thereby ensuring the surface machining quality of the machining surface 31.

[0043] In addition, it should be noted that the function of the non-resonant reciprocating vibration is: the heat generated by the pulsed laser irradiating the workpiece 3 will cause the surface of the workpiece 3 to expand, which may cause the residual stress on the machining surface 31 to be completely converted into tensile stress. Tensile stress will cause cracks. Therefore, the compressive stress generated by the impact of the non-resonant grinding structure is used to offset the residual tensile stress applied to the machining surface 31 by the pulsed laser 2, thereby ensuring the surface machining quality of the machining surface 31.

[0044] The pulsed laser non-resonant assisted grinding device provided in this embodiment, in addition to emitting laser light from the pulsed laser 2 onto the processing surface 31 of the workpiece 3 to adjust the surface plasticity of the processing surface 31, and driving the front-end grinding component 13 to rotate around the length direction of the machine tool by a preset angle through the driving component 12 of the non-resonant grinding structure 1 to grind the processing surface 31, also drives the front-end grinding component 13 to reciprocate non-resonantly along the length direction of the machine tool through the driving component 12, thereby applying an impact force to the processing surface 31, so that the processing surface 31 can bear a certain residual compressive stress under the impact force to offset the residual tensile stress applied to the processing surface 31 by the pulsed laser 2, so that the residual compressive stress and residual tensile stress on the processing surface 31 are offset to a certain extent, thereby ensuring the surface processing quality of the processing surface 31.

[0045] Reference Figure 1 and Figure 2 As shown, in some embodiments, the drive assembly 12 includes a braking structure 121 and a skewed flexible hinge 122 that drives the braking structure 121. The skewed flexible hinge 122 is disposed between the braking structure 121 and the front grinding assembly 13 and is connected to the front grinding assembly 13.

[0046] The braking structure 121 is used to drive the obliquely bent flexible hinge 122 to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle, so as to link the front-end grinding assembly 13 to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle.

[0047] In a specific implementation, the braking structure 121 is used to apply pressure along the length direction of the machine tool to the obliquely bending flexible hinge 122 (see reference). Figures 1 to 3 The force in the z-direction shown is applied by the oblique bending flexible hinge 122, which switches the force along the length direction of the machine tool to the force along the length direction of the machine tool and the rotational force around the length direction of the machine tool. This allows the front-end grinding assembly 13 connected to it to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle.

[0048] Specifically, refer to Figure 2 and Figure 3 As shown, in some embodiments, two braking structures 121 are provided, with the two braking structures 121 arranged along the height direction of the machine tool (see reference). Figures 1 to 3 The x-direction shown is spaced apart and symmetrically arranged with respect to the length direction of the machine tool; the obliquely bent flexible hinge 122 is set in two and corresponds one-to-one with the braking structure 121.

[0049] Each inclined flexible hinge 122 includes two inclined transmission structures 123 arranged sequentially along the length of the machine tool. The inclined transmission structures 123 of the two inclined flexible hinges 122 are symmetrically arranged with respect to the length of the machine tool, and the sides of the two inclined transmission structures 123 of the same inclined flexible hinge 122 that are close to each other form abutting inclined surface 124.

[0050] In specific implementation, the braking structure 121 consists of two parts and along... Figure 2 The x-direction spacing shown is illustrated by taking the front-end grinding assembly 13 along the z-direction toward the workpiece 3 as an example:

[0051] Two braking structures 121 are used to apply a leftward force F in the z-direction to two obliquely curved flexible hinges 122, so that the two braking structures 121 can generate a displacement L1 in the z-direction. After receiving the force F in the z-direction, the lower obliquely curved flexible hinge 122 decomposes the received force in the z-direction into a force in the z-direction and a force in the x-direction under the pushing action of the two inclined plane transmission structures 123, thereby enabling the lower obliquely curved flexible hinge 122 to generate a displacement L3 in the z-direction and a displacement L4 in the x-direction, and then enabling the lower obliquely curved flexible hinge 122 to generate a displacement L2 as a whole. Accordingly, the upper inclined flexible hinge 122 decomposes the received force along the z direction into a force along the z direction and a force along the x direction under the pushing action of the two inclined transmission structures 123 (the x direction here is opposite to the direction of the displacement of the lower inclined flexible hinge 122 along the x direction mentioned above), thereby enabling the upper inclined flexible hinge 122 to generate a displacement L5 along the z direction and a displacement L6 along the x direction.

[0052] Since the front-end grinding assembly 13 is connected to two obliquely bent flexible hinges 122, the front-end grinding assembly 13 is subjected to a force along the z-direction, an upward force along the x-direction, and a downward force along the x-direction. As a result, the front-end grinding assembly 13 rotates around the z-direction as an axis under the combined action of the upward force along the x-direction and the downward force along the x-direction, and moves along the z-direction under the action of the force along the z-direction. Through the above process, the front-end grinding assembly 13 can move along the z-direction and rotate around the z-direction as an axis.

[0053] Similarly, the way the front-end grinding assembly 13 moves in the z-direction toward the direction away from the workpiece 3 can be referred to the above description. The difference is that the two braking structures 121 are used to apply a force to the right in the z-direction to the two obliquely bent flexible hinges 122, so that the front-end grinding assembly 13 can reciprocate non-resonantly in the z-direction and rotate around the z-direction as an axis by a preset angle.

[0054] Reference Figure 2 As shown, in some embodiments, each braking structure 121 includes a piezoelectric brake 125 and a baffle 126 connected to one end of the piezoelectric brake 125 near the obliquely bent flexible hinge 122.

[0055] The baffle 126 abuts against the corresponding obliquely curved flexible hinge 122. The piezoelectric brake 125 is used to drive the baffle 126 to move along the length direction of the machine tool, so as to drive the obliquely curved flexible hinge 122 to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle.

[0056] In a specific implementation, the example is given by taking the front-end grinding component 13 along the z-direction toward the workpiece 3:

[0057] Two piezoelectric brakes 125 apply a leftward force F in the z-direction to two baffles 126, causing the two baffles 126 to generate a displacement L1 in the z-direction. After receiving the force F in the z-direction, the lower inclined flexible hinge 122 decomposes the received force in the z-direction into a force in the z-direction and a force in the x-direction under the pushing action of the two inclined transmission structures 123. This causes the lower inclined flexible hinge 122 to generate a displacement L3 in the z-direction and a displacement L4 in the x-direction, which in turn causes the lower inclined flexible hinge 122 to generate a displacement L2 as a whole. Correspondingly, the upper inclined flexible hinge 122 decomposes the received force along the z direction into a force along the z direction and a force along the x direction under the pushing action of the two inclined transmission structures 123 (the x direction here is opposite to the direction of displacement of the lower inclined flexible hinge 122 along the x direction mentioned above), thereby enabling the upper inclined flexible hinge 122 to generate a displacement L5 along the z direction and a displacement L6 along the x direction, ultimately causing the front grinding assembly 13 to generate a displacement L7 along the z direction under the action of the two inclined flexible hinges 122.

[0058] Similarly, the way the front-end grinding assembly 13 moves in the z-direction toward the direction away from the workpiece 3 can be referred to the above description. The difference is that the two piezoelectric brakes 125 are used to apply a force to the right in the z-direction to the two baffles 126, so that the front-end grinding assembly 13 can reciprocate non-resonantly in the z-direction and rotate around the z-direction as an axis by a preset angle.

[0059] In summary, based on the sinusoidal electrical signal input to the piezoelectric actuator, the force is constantly changing. When the force increases, the device will produce a forward motion accompanied by counterclockwise rotation. When the force gradually decreases, the device rotates in the opposite direction and produces a backward retraction motion, thus repeating the cycle.

[0060] Reference Figure 3 As shown, in some embodiments, the front-end grinding assembly 13 includes a front-end connecting block 131 and a grinding head 132 disposed at the end of the front-end connecting block 131 away from the braking structure 121. The front-end connecting block 131 is connected to two obliquely bent flexible hinges 122, so that the front-end connecting block 131 can reciprocate non-resonantly along the length direction of the machine tool under the drive of the obliquely bent flexible hinges 122 and can rotate about the length direction of the machine tool. This allows the grinding head 132 to reciprocate non-resonantly along the length direction of the machine tool and rotate about the length direction of the machine tool, so as to grind the machining surface 31 of the workpiece 3 and apply residual compressive stress to the machining surface 31 to counteract residual tensile stress.

[0061] Reference Figure 3 As shown, in some embodiments, the front connecting block 131 includes a connecting block 133 and two transmission blocks 134 located at the end of the connecting block 133 away from the grinding head 132.

[0062] Two transmission blocks 134 are spaced apart along the height direction of the machine tool and respectively abut against the corresponding obliquely bent flexible hinges 122; the connecting block 133 is connected to the grinding head 132, so that the two transmission blocks 134 rotate around the length direction of the machine tool and reciprocate non-resonantly along the length direction of the machine tool under the action of the two obliquely bent flexible hinges 122, thereby driving the grinding head 132 to reciprocate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle, so as to grind the machining surface 31 of the workpiece 3 and apply residual compressive stress to the machining surface 31 to offset the residual tensile stress.

[0063] Reference Figure 1 As shown, in some embodiments, a force detection component 4 is provided on the non-resonant grinding structure 1. The force detection component 4 is used to detect the grinding force applied to the workpiece 3 by the front-end grinding component 13 to ensure reliable grinding operation of the workpiece 3.

[0064] Reference Figure 1 As shown, in some embodiments, the force detection component 4 includes a force gauge 41 and a connecting plate 42. The connecting plate 42 is disposed at the bottom of the frame 11 and connected to the force gauge 41. The force gauge 41 is used to detect the grinding force applied to the workpiece 3 by the front grinding component 13.

[0065] In practice, the connecting plate 42 can be fixed to the frame 11 by screwing or snapping, and the force gauge 41 can also be connected to the connecting plate 42 by gluing, snapping or screwing.

[0066] In some embodiments, a first sliding part extending along the width direction of the machine tool is provided on the machine tool, and a second sliding part is provided on the pulsed laser non-resonant grinding device at a position corresponding to the first sliding part. The pulsed laser non-resonant auxiliary grinding device moves relative to the machine tool through the cooperation of the first sliding part and the second sliding part, thereby realizing all-round grinding of the machining surface 31 of the workpiece 3.

[0067] For example, one of the first sliding portion and the second sliding portion is a slide groove extending along the length direction of the machine tool, and the other of the first sliding portion and the second sliding portion is a slide rail that can slide along the slide groove.

[0068] For example, a slide rail extending along the width of the machine tool can be set on the machine tool, and a groove can be set on the pulsed laser non-resonant auxiliary grinding device; or a groove can be set on the machine tool and a slide rail can be set on the pulsed laser non-resonant auxiliary grinding device.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the embodiments of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention are not to be limited to the embodiments described herein, but are to be accorded the widest scope consistent with the principles and novel features of the embodiments of the invention herein.

Claims

1. A pulsed laser non-resonant assist grinding device, characterized by, The pulsed laser non-resonant auxiliary polishing device is used to be mounted on a machine tool and can reciprocate relative to the machine tool along the width direction of the machine tool; the pulsed laser non-resonant auxiliary polishing device includes a non-resonant polishing structure (1) and a pulsed laser (2). The non-resonant grinding structure (1) and the pulsed laser (2) are both used to be mounted on the machine tool and located on the same side of the workpiece (3) clamped on the machine tool. The pulsed laser (2) is used to emit laser light to the machining surface (31) of the workpiece (3) to adjust the surface plasticity of the machining surface (31). The non-resonant grinding structure (1) includes a frame (11), a drive assembly (12) and a front-end grinding assembly (13) disposed on the frame (11). The drive assembly (12) is used to drive the front-end grinding assembly (13) to reciprocate non-resonantly relative to the workpiece (3) along the length direction of the machine tool to apply an impact force to the processing surface (31), and at the same time drive the front-end grinding assembly (13) to rotate around the length direction of the machine tool by a preset angle to grind the workpiece (3). The drive assembly (12) includes a braking structure (121) and a skewed flexible hinge (122) that drives the braking structure (121). The skewed flexible hinge (122) is disposed between the braking structure (121) and the front end grinding assembly (13) and is connected to the front end grinding assembly (13). The braking structure (121) is used to drive the oblique bending flexible hinge (122) to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool as an axis, so as to link the front end grinding assembly (13) to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool as an axis by a preset angle; The braking structure (121) is provided in two parts, which are spaced apart along the height direction of the machine tool and symmetrically arranged with respect to the length direction of the machine tool; the obliquely bent flexible hinge (122) is provided in two parts and corresponds one-to-one with the braking structure (121); Each of the oblique bending flexible hinges (122) includes two oblique surface transmission structures (123) arranged sequentially along the length direction of the machine tool. The oblique surface transmission structures (123) of the two oblique bending flexible hinges (122) are arranged symmetrically with respect to the length direction of the machine tool, and the sides of the two oblique surface transmission structures (123) of the same oblique bending flexible hinge (122) that are close to each other form abutting oblique surface (124). Each of the braking structures (121) includes a piezoelectric brake (125) and a baffle (126) connected to one end of the piezoelectric brake (125) near the obliquely bent flexible hinge (122). The baffle (126) abuts against the corresponding obliquely bent flexible hinge (122), and the piezoelectric brake (125) is used to drive the baffle (126) to move along the length direction of the machine tool, so as to drive the obliquely bent flexible hinge (122) to vibrate non-resonantly along the length direction of the machine tool and rotate around the length direction of the machine tool by a preset angle.

2. The pulsed laser non-resonant assist grinding apparatus according to claim 1, wherein, The front-end grinding assembly (13) includes a front-end connecting block (131) and a grinding head (132) disposed at one end of the front-end connecting block (131) away from the braking structure (121); the front-end connecting block (131) is connected to two of the obliquely bent flexible hinges (122).

3. The pulsed laser non-resonant assist ablation apparatus according to claim 2, wherein, The front-end connecting block (131) includes a connecting block (133) and two transmission blocks (134) located at one end of the connecting block (133) away from the grinding head (132). The two transmission blocks (134) are spaced apart along the height direction of the machine tool and respectively abut against the corresponding obliquely bent flexible hinges (122); the connecting block (133) is connected to the grinding head (132).

4. The pulsed laser non-resonant assisted polishing apparatus according to any one of claims 1 to 3, characterized in that, The non-resonant grinding structure (1) is provided with a force detection component (4), which is used to detect the grinding force applied to the workpiece (3) by the front-end grinding component (13).

5. The pulsed laser non-resonant assist ablation apparatus according to claim 4, wherein, The force detection component (4) includes a force gauge (41) and a connecting plate (42). The connecting plate (42) is located at the bottom of the frame (11) and connected to the force gauge (41). The force gauge (41) is used to detect the grinding force applied to the workpiece (3) by the front grinding component (13).

6. The pulsed laser non-resonant assist ablation apparatus according to any one of claims 1 to 3, wherein The machine tool is provided with a first sliding part extending along the width direction of the machine tool, and the pulsed laser non-resonant polishing device is provided with a second sliding part at a position corresponding to the first sliding part. The pulsed laser non-resonant auxiliary polishing device moves relative to the machine tool through the cooperation of the first sliding part and the second sliding part.

7. The pulsed laser non-resonant assist ablation apparatus according to claim 6, wherein, One of the first sliding part and the second sliding part is a slide groove extending along the length direction of the machine tool, and the other of the first sliding part and the second sliding part is a slide rail that can slide along the slide groove.

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