Composite material grinding device and composite material grinding method

Abstract

The invention relates to the technical field of composite material test sample preparation, and discloses a composite material grinding device and a composite material grinding method.The composite material grinding device comprises a grinding head, a lifting mechanism connected to the grinding head, a fixing mechanism, a moving mechanism connected to the fixing mechanism and a cooling device arranged on one side of the fixing mechanism; the lifting mechanism is used for adjusting the lifting height of the grinding head, the moving mechanism is used for horizontally adjusting the transverse and longitudinal positions of the fixing mechanism, and the cooling device can spray cooling gas towards the composite material sample clamped on the fixing mechanism so as to reduce the temperature of the contact surface of the composite material sample and the grinding head and avoid being absorbed by the surface of the composite material. And cooling gas can be used for further purging powder generated by grinding, the surface quality is improved, the transverse or longitudinal position of the composite material sample is adjusted through the moving mechanism, the grinding machining precision is ensured in cooperation with the lifting structure connected with the grinding head, and then the flatness and uniformity of the ground surface are improved.

Description

Technical Field

[0001] The invention relates to the technical field of composite material test sample preparation, in particular to a composite material grinding device and a composite material grinding method. Background Art

[0002] Carbon fiber reinforced composite materials are widely used in aerospace engineering, manufacturing, automobiles, medical and other fields due to their advantages such as designable structure, corrosion resistance, aging resistance, low hardness, light weight, small thermal expansion coefficient, high strength and high toughness. Samples processed by conventional manufacturing processes often cannot directly meet the performance test requirements and need to be further ground. Improper grinding can easily cause damage to the sample, resulting in unreliable performance test data.

[0003] In the prior art, during the processing and testing of composite materials, the composite materials and grinding discs are usually cooled by spraying coolant. However, the coolant sprayed onto the surface of the composite material will be absorbed, causing the workpiece surface to swell and reduce the surface quality.

[0004] Therefore, there is an urgent need to propose a corresponding solution to the problem that in the prior art, the coolant is sprayed on the surface of the composite material to cool down the composite material and the grinding disc, and the coolant will be absorbed by the surface of the composite material, causing the surface of the workpiece to expand and reduce the surface quality. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem in the prior art of cooling the composite material and the grinding disc by spraying coolant, where the coolant sprayed onto the surface of the composite material will be absorbed, causing the surface of the workpiece to swell and reduce the surface quality.

[0006] In order to achieve the above-mentioned objectives, the present invention provides, on one hand, a composite material grinding device, comprising a grinding head for grinding a composite material sample, a lifting mechanism connected to the grinding head, a fixing mechanism for positioning and clamping the composite material sample, a moving mechanism connected to the fixing mechanism, and a cooling device arranged on one side of the fixing mechanism, wherein the lifting mechanism is used to adjust the lifting height of the grinding head relative to the composite material sample, the moving mechanism is used to horizontally adjust the lateral and longitudinal positions of the fixing mechanism, and the cooling device can spray cooling gas toward the composite material sample clamped on the fixing mechanism to reduce the temperature of the contact surface between the composite material sample and the grinding head.

[0007] In some embodiments, the fixing mechanism includes a base plate for supporting the composite material sample, and a clamping block assembly for clamping the composite material sample and detachably / adjustably connected to the top surface of the base plate, wherein the side of the clamping block assembly facing the composite material sample is a frosted surface, and includes an adjustable clamping block and a clamping block step connected to the side of the adjustable clamping block facing the composite material sample and having a height lower than the adjustable clamping block.

[0008] In some embodiments, one of the side of the adjustable clamp facing the composite material sample and the side of the clamp step facing away from the composite material sample is formed with a tenon, and the other is formed with a mortise and tenon matched with the tenon.

[0009] In some embodiments, the moving mechanism includes a support platform supported below the fixing mechanism and a driving component for driving the fixing mechanism to move along the lateral or longitudinal direction of the support platform, and the driving component includes guide rails respectively arranged along the length and width directions of the support platform.

[0010] In some embodiments, the lifting mechanism includes a support rod extending in a vertical direction, the top end of the support rod is connected to a movable seat perpendicular to the support rod, and the grinding head is connected to one end of the movable seat via a motor.

[0011] In some embodiments, the support rod passes through the moving seat, a positioning knob is inserted into the side of the moving seat, the positioning knob passes through the moving seat and is connected to the support rod, and the support rod is provided with scales distributed along the vertical direction.

[0012] In some embodiments, a control module is connected to one end of the moving base away from the composite material sample.

[0013] In some embodiments, the lifting mechanism further includes a base disposed at the bottom end of the support rod.

[0014] In some embodiments, the composite material grinding device also includes a cleaning device disposed above the composite material sample, the cleaning device including a suction structure facing the composite material sample, and an outer cover mounted on the suction structure, the suction structure being capable of sucking powder generated by grinding the composite material sample.

[0015] A second aspect of the present invention provides a composite material grinding method, wherein the composite material grinding method grinds the composite material by using the composite material grinding device mentioned above.

[0016] Through the above technical scheme, the cooling device can be used to spray cooling gas toward the surface of the composite material sample so as to reduce the temperature of the contact surface between the composite material sample and the grinding head. At the same time, it can avoid being absorbed by the composite material surface and causing the workpiece surface to expand. The cooling gas can be used to further blow away the powder generated by grinding the composite material sample to improve the surface quality. In addition, the composite material sample is positioned and clamped by a fixing mechanism, and the lateral or longitudinal position of the composite material sample is adjusted by a moving mechanism. In conjunction with the lifting structure connected to the grinding head, it is convenient to grind according to the sample thickness required by different test items, thereby ensuring the grinding processing accuracy and further improving the flatness and uniformity of the grinding surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the composite material grinding device of the present invention;

[0018] Figure 2 yes Figure 1 A structural schematic diagram of an implementation method of the fixing structure;

[0019] Figure 3 yes Figure 2 A side view of the fixed structure;

[0020] Figure 4 yes Figure 2 A disassembled view of the connection between the adjustable clamp and the clamp step.

[0021] Description of Reference Numerals

[0022] 1 Grinding head 2 Lifting mechanism

[0023] 21 Support rod 22 Moving seat

[0024] 23 Motor 24 Positioning knob

[0025] 25 Control module 26 Base

[0026] 3 Fixing mechanism 31 Bottom plate

[0027] 32 Adjustable clamp 33 Clamp step

[0028] 34 tenon 35 mortise

[0029] 4 Mobile mechanism 41 Support platform

[0030] 42 Guide rail 5 Cleaning device

[0031] 6 Cooling device DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the present invention, unless otherwise specified, the directions or positional relationships indicated by the directional words such as "up" and "down" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present design and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present design.

[0034] In the description of this design, it should be noted that, unless otherwise clearly specified and limited, the terms "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this design can be understood according to specific circumstances.

[0035] Furthermore, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In order to solve the problem that the composite material and the grinding disc are cooled by spraying coolant in the prior art, the coolant sprayed on the surface of the composite material will be absorbed, causing the surface of the workpiece to swell and reduce the surface quality.

[0037] like Figure 1 As shown, one aspect of the present invention provides a composite material grinding device.

[0038] Embodiment 1

[0039] The composite material grinding device includes a grinding head 1 for grinding a composite material sample, a lifting mechanism 2 connected to the grinding head 1, a fixing mechanism 3 for positioning and clamping the composite material sample, a moving mechanism 4 connected to the fixing mechanism 3, and a cooling device 6 arranged on one side of the fixing mechanism 3, wherein the lifting mechanism 2 is used to adjust the lifting height of the grinding head 1 relative to the composite material sample, the moving mechanism 4 is used to horizontally adjust the lateral and longitudinal positions of the fixing mechanism 3, and the cooling device 6 can spray cooling gas toward the composite material sample clamped on the fixing mechanism 3 to reduce the temperature of the contact surface between the composite material sample and the grinding head 1.

[0040] Specifically, the cooling device 6 can be used to spray cooling gas toward the surface of the composite material sample so as to reduce the temperature of the contact surface between the composite material sample and the grinding head 1. At the same time, it can prevent the liquid from being absorbed by the composite material surface when spraying the coolant, causing the workpiece surface to expand, and the cooling gas can be used to further blow away the powder generated by grinding the composite material sample to improve the surface quality. In addition, the fixing mechanism 3 is used to position and clamp the composite material sample, and the lateral or longitudinal position of the composite material sample is horizontally adjusted by the moving mechanism 4. In conjunction with the lifting structure 2 connected to the grinding head 1, it is convenient to grind the composite material sample according to the thickness size required by different test items, thereby ensuring the grinding processing accuracy and further improving the flatness and uniformity of the grinding surface.

[0041] Embodiment 2

[0042] This embodiment includes all the contents of the first embodiment. And in this embodiment, refer to Figure 1 As shown, the fixing mechanism 3 includes a base plate 31 for carrying a composite material sample, and a clamping block assembly for clamping the composite material sample and detachably / adjustably connected to the top surface of the base plate 31, wherein the side of the clamping block assembly facing the composite material sample is a frosted surface, and includes an adjustable clamping block 32 and a clamping block step 33 connected to the side of the adjustable clamping block 32 facing the composite material sample and having a height lower than the adjustable clamping block 32.

[0043] Specifically, the clamp block assembly can be connected to the top surface of the bottom plate 31 carrying the composite material sample to form a limited space to fix the composite material sample. The clamp block assembly can be detachably / adjustably connected to the bottom plate 31 by magnetic attraction, and then the position can be adjusted according to the actual size of the composite material sample, and the orientation of the magnetic attraction between the clamp block assembly and the bottom plate 31 can be adjusted according to the size of the composite material sample and the pressure generated, and the appropriate magnetic attraction gear is selected, so that any composite material sample can always remain clamped and fixed during grinding.

[0044] like Figure 2 and 3 As shown, the clamping surface of the clamping block assembly for clamping the composite material sample can be set to a frosted surface, further increasing the friction between the clamping block assembly and the composite material sample, making the sample clamped more firmly, and further avoiding the occurrence of tipping. The clamping block assembly can include an adjustable clamping block 32 and a clamping block step 33 connected to the adjustable clamping block 32 and facing the composite material sample and having a height lower than the adjustable clamping block 32. The composite material sample can be placed on the top of the clamping block step 33, and the composite material sample can be clamped by the adjustable clamping blocks 32 on both sides, and the height thereof is higher than the height of the adjustable clamping block 32. The protruding composite material sample can be ground by the grinding head 1.

[0045] Further, such as Figure 4As shown, in this embodiment, one of the side of the adjustable clamp 32 facing the composite material sample and the side of the clamp step 33 away from the composite material sample is formed with a tenon 34, and the other is formed with a mortise 35 adapted to the tenon 34. In this way, the adjustable clamp 32 and the clamp step 33 are connected by the mortise and tenon structure, which has higher stability. When the composite material sample is placed on the top surface of the clamp step 33 and fits with the adjustable clamp 32, it can ensure that the adjustable clamp 32 and the clamp step 33 are connected stably, avoid tilting, and prevent uneven grinding. In addition, the mortise and tenon structure is more convenient to install and is easy to dismantle when not in use, without increasing the difficulty of loading and unloading.

[0046] Embodiment 3

[0047] This embodiment includes all the contents of the first embodiment. And in this embodiment, as Figure 1 As shown, the moving mechanism 4 includes a support platform 41 supported below the fixing mechanism 3 and a driving component for driving the fixing mechanism 3 to move along the support platform 41 in the lateral or longitudinal direction. The driving component includes guide rails 42 respectively arranged along the length direction and width direction of the support platform 41.

[0048] Specifically, a guide rail 42 can be set along the length and width direction of the support platform 41, and the fixing mechanism 3 can move along the direction of the guide rail 42, so that the fixing mechanism 3 moves along the horizontal or longitudinal direction of the support platform 41, thereby adjusting the movement direction of the composite material sample clamped on the fixing mechanism 3, ensuring that the grinder 1 can grind to various positions on the surface of the composite material sample, thereby improving the sample surface grinding effect. Furthermore, a laser irradiation device can be set on the grinding head 1, and as the fixing mechanism 3 holding the composite material sample moves along the direction of the guide rail 42, the flatness of the sample grinding surface can be checked by laser irradiation to ensure the flatness of the sample grinding surface.

[0049] Furthermore, in this embodiment, the lifting mechanism 2 includes a support rod 21 extending in a vertical direction, the top end of the support rod 21 is connected to a movable seat 22 perpendicular to the support rod 21 , and the grinding head 1 is connected to one end of the movable seat 22 via a motor 23 .

[0050] like Figure 1 As shown, the grinding head 1 can be connected to one end of the moving seat 22 through a motor 23. The moving seat 22 can move along the direction of the support rod 21 extending in the vertical direction. The moving seat 22 moves on the support rod 21 to drive the grinding head 1 to move in the vertical direction. When grinding is required, the grinder 1 can move vertically downward with the moving seat 22, contact the surface of the composite material sample in the fixing mechanism 3 below, and perform grinding.

[0051] Furthermore, in this embodiment, the support rod 21 passes through the movable seat 22, and a positioning knob 24 is inserted into the side of the movable seat 22. The positioning knob 24 passes through the movable seat 22 and is connected to the support rod 21. The support rod 21 is provided with scales distributed along the vertical direction.

[0052] Specifically, Figure 1 As shown, the positioning knob 24 can pass through the moving seat 22 and be connected to the support rod 21. When the grinding head 1 needs to be fixed in position to grind the composite material sample, the positioning knob 24 can be manually selected to contact the moving seat 22 connected to the grinding head 1 with the support rod 21, and the moving seat 22 can be fixed on the support rod 21, thereby realizing the limit function. In addition, the support rod 21 can be provided with scales distributed along the vertical direction. The scales on the support rod 21 can be used to clearly define the distance that the moving seat 22 needs to descend along the support rod 21, thereby being able to accurately control the grinding accuracy of the grinding head 1, thereby improving the grinding accuracy.

[0053] Embodiment 4

[0054] This embodiment includes all the contents of Embodiment 1 and Embodiment 3. In this embodiment, a control module 25 is connected to one end of the movable seat 22 which is away from the composite material sample.

[0055] like Figure 1 As shown, the end of the moving seat 22 away from the composite material sample can be connected to a control module 25, and a numerical control form can be selected, and the control module 25 is used to control the moving seat 22 to move on the support rod 21, thereby driving the grinding head 1 to move in the vertical direction, and the control module 25 can control the descending distance of the moving seat 22 to ensure the required grinding accuracy of the grinding head 1. Of course, the control module 25 can also be electrically connected to the fixing mechanism 3, and then the fixing mechanism 3 can be controlled by the control module 25 to move along the direction of the guide rail 42, which is convenient for operation.

[0056] Embodiment 5

[0057] This embodiment includes all the contents of the first and third embodiments. In this embodiment, Figure 1 As shown, the lifting mechanism 2 also includes a base 26 arranged at the bottom end of the support rod 21. The base 26 can be used to support the support rod 21 to prevent the lifting mechanism 2 from tipping over due to the instability of the support rod 21, thereby affecting the flatness and uniformity of the grinding.

[0058] Embodiment 6

[0059] This embodiment includes all the contents of the embodiment 1. In this embodiment, the composite material grinding device further includes a cleaning device 5 disposed above the composite material sample, the cleaning device 5 includes a suction structure facing the composite material sample, and an outer cover sleeved on the suction structure, and the suction structure can suck the powder generated by grinding the composite material sample.

[0060] Specifically, Figure 1 As shown, during the grinding of the composite material sample by the composite material grinding device, in order to prevent the powder generated by the grinding from overflowing and causing the operator to inhale it by mistake, a working cover can be provided on the outer cover of the composite material grinding device, and a cleaning device 5 can be provided on the top of the working cover. Among them, the cleaning device 5 can include a suction structure facing the composite material sample and capable of sucking the powder generated by grinding the composite material sample, and an outer cover can be set on the periphery of the suction structure to prevent the powder from scattering during the suction process, causing the powder to fly into various parts of the composite material grinding device, causing the parts to conduct electricity and cause short circuit failure, thereby affecting the working efficiency of the composite material grinding.

[0061] A second aspect of the present invention provides a composite material grinding method, which grinds the composite material by the composite material grinding device mentioned above to ensure the surface quality of the workpiece, thereby ensuring the needs of subsequent performance testing of the composite material sample.

[0062] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. Including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A composite material grinding device, characterized in that: The invention comprises a grinding head (1) for grinding a composite material sample, a lifting mechanism (2) connected to the grinding head (1), a fixing mechanism (3) for positioning and clamping the composite material sample, a moving mechanism (4) connected to the fixing mechanism (3), and a cooling device (6) arranged on one side of the fixing mechanism (3), wherein the lifting mechanism (2) is used to adjust the lifting height of the grinding head (1) relative to the composite material sample, the moving mechanism (4) is used to horizontally adjust the lateral and longitudinal positions of the fixing mechanism (3), and the cooling device (6) is capable of spraying cooling gas toward the composite material sample clamped on the fixing mechanism (3) to reduce the temperature of the contact surface between the composite material sample and the grinding head (1).

2. The composite material grinding device according to claim 1, characterized in that: The fixing mechanism (3) comprises a base plate (31) for carrying the composite material sample, and a clamping block assembly for clamping the composite material sample and detachably / adjustably connected to the top surface of the base plate (31), wherein the side of the clamping block assembly facing the composite material sample is a frosted surface, and comprises an adjustable clamping block (32) and a clamping block step (33) connected to the adjustable clamping block (32) and facing the composite material sample and having a height lower than the adjustable clamping block (32).

3. The composite material grinding device according to claim 2, characterized in that: One of the side of the adjustable clamp (32) facing the composite material sample and the side of the clamp step (33) facing away from the composite material sample is formed with a tenon (34), and the other is formed with a mortise (35) matched with the tenon (34).

4. The composite material grinding device according to claim 1, characterized in that: The moving mechanism (4) comprises a support platform (41) supported below the fixing mechanism (3) and a driving component for driving the fixing mechanism (3) to move in the lateral or longitudinal direction of the support platform (41), wherein the driving component comprises guide rails (42) respectively arranged in the length direction and the width direction of the support platform (41).

5. The composite material grinding device according to claim 4, characterized in that: The lifting mechanism (2) comprises a support rod (21) extending in a vertical direction, the top end of the support rod (21) is connected to a movable seat (22) perpendicular to the support rod (21), and the grinding head (1) is connected to one end of the movable seat (22) via a motor (23).

6. The composite material grinding device according to claim 5, characterized in that: The support rod (21) passes through the movable seat (22); a positioning knob (24) is inserted into the side of the movable seat (22); the positioning knob (24) passes through the movable seat (22) and is connected to the support rod (21); and the support rod (21) is provided with scales distributed along the vertical direction.

7. The composite material grinding device according to claim 5, characterized in that: One end of the movable seat (22) facing away from the composite material sample is connected to a control module (25).

8. The composite material grinding device according to claim 4, characterized in that: The lifting mechanism (2) also includes a base (26) arranged at the bottom end of the support rod (21).

9. The composite material grinding device according to claim 1, characterized in that: The composite material grinding device also includes a cleaning device (5) arranged above the composite material sample, the cleaning device (5) includes a suction structure facing the composite material sample, and an outer cover sleeved on the suction structure, the suction structure can suck powder generated by grinding the composite material sample.

10. A composite material grinding method, characterized in that: The composite material grinding method grinds the composite material by using the composite material grinding device described in any one of claims 1 to 9.

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