CN108398308B - Device and method for processing end surface of fiber reinforced composite material compression specimen - Google Patents
Device and method for processing end surface of fiber reinforced composite material compression specimen Download PDFInfo
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- CN108398308B CN108398308B CN201810571494.7A CN201810571494A CN108398308B CN 108398308 B CN108398308 B CN 108398308B CN 201810571494 A CN201810571494 A CN 201810571494A CN 108398308 B CN108398308 B CN 108398308B
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- 230000006835 compression Effects 0.000 title claims abstract description 51
- 238000007906 compression Methods 0.000 title claims abstract description 51
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000012545 processing Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 description 31
- 238000005498 polishing Methods 0.000 description 15
- 238000004381 surface treatment Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Sampling And Sample Adjustment (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
本发明提供了一种纤维增强复合材料压缩试样端面处理装置及方法，涉及复合材料性能测试设备的技术领域，包括底座、夹持机构、磨头和驱动机构；夹持机构位于底座上，用于对压缩试样的夹持定位；磨头和驱动机构均位于底座上，且磨头与夹持机构相对，且磨头的打磨面与被夹持在夹持机构内的压缩试样的轴线垂直；驱动机构与磨头传动连接，用于驱动磨头打磨压缩试样的端面。本发明能够精准的对压缩试样进行定位，且同一试样分别对两端进行定位时试样长轴不会出现偏离，通过垂直于定位轴线的打磨面对试样端面进行打磨，能同时保证两端面的平行度及端面与试样长轴的垂直度。
The present invention provides a fiber reinforced composite material compression sample end surface processing device and method, which relates to the technical field of composite material performance testing equipment, including a base, a clamping mechanism, a grinding head and a driving mechanism; the clamping mechanism is located on the base, and is used to clamp and position the compression sample; the grinding head and the driving mechanism are both located on the base, and the grinding head is opposite to the clamping mechanism, and the grinding surface of the grinding head is perpendicular to the axis of the compression sample clamped in the clamping mechanism; the driving mechanism is connected to the grinding head in a transmission manner, and is used to drive the grinding head to grind the end surface of the compression sample. The present invention can accurately position the compression sample, and the long axis of the sample will not deviate when the two ends of the same sample are positioned separately. The end surface of the sample is polished by a grinding surface perpendicular to the positioning axis, which can simultaneously ensure the parallelism of the two end surfaces and the verticality of the end surface to the long axis of the sample.
Description
Technical Field
The invention relates to the technical field of composite material performance testing equipment, in particular to a device and a method for processing an end face of a compressed sample of a fiber reinforced composite material.
Background
At present, the fiber reinforced composite material compression sample is tested in a mode of end face loading and end face and shearing combined loading, the end face parallelism and the perpendicularity of the end face and the long axis of the sample have great influence on the test result of the type of loading, and particularly, the fiber reinforced composite material with high strength and high modulus is subjected to clear requirement regulation on the related standard. The samples processed by most sample processing modes are difficult to meet the standard requirements, and the samples are specifically expressed as follows: adopting a universal grinder to cut and process the sample, wherein the grinding surface of the end surface of the cut and ground sample is uneven or is not vertical to the long axis of the sample due to the fact that the rigidity of the grinding wheel is insufficient and the deformation of the grinding wheel occurs in the cutting process; and a numerical control water cutting machine is adopted to process the sample, and the thickness of the reinforcing area of the sample is larger, so that the distance between the upper surface and the lower surface of the sample and the water knife is greatly deviated, and the cutting end surface of the sample is an inclined surface from top to bottom.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a device and a method for processing the end faces of a compressed sample of a fiber reinforced composite material, which can accurately position the compressed sample, and the long axes of the sample cannot deviate when the same sample respectively positions two ends, and the end faces of the sample are polished by polishing faces perpendicular to a positioning axis, so that the parallelism of the two end faces and the perpendicularity of the end faces and the long axes of the sample can be ensured, and the requirements of the parallelism and the perpendicularity of the end faces before testing, which are processed in all modes, can be met.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides a fiber reinforced composite material compression sample end face processing apparatus comprising: the grinding head comprises a base, a clamping mechanism, a grinding head and a driving mechanism;
the clamping mechanism is positioned on the base and used for clamping and positioning the compressed sample;
the grinding head and the driving mechanism are both positioned on the base, the grinding head is opposite to the clamping mechanism, and the grinding surface of the grinding head is perpendicular to the axis of the compressed sample clamped in the clamping mechanism;
the driving mechanism is in transmission connection with the grinding head and is used for driving the grinding head to grind the end face of the compressed sample.
Further, the clamping mechanism comprises a sliding block, at least one clamping groove is formed in the sliding block, a pressing strip for pressing the compression sample to one side of the clamping groove is arranged in the clamping groove, so that the end face of the compression sample is parallel to the polishing surface of the polishing head, and the axis of the compression sample is perpendicular to the polishing surface of the polishing head.
Further, a first positioning protrusion matched with the groove on the compressed sample is arranged on the side surface, close to the compressed sample, of the clamping groove;
The side surface of the pressing strip, which is close to the compressed sample, is provided with a second positioning protrusion matched with the groove on the compressed sample.
Further, the pressing strip is connected with the sliding block through a pressing strip fastening screw, and the pressing strip is positioned with the sliding block through a pressing strip guide post, so that the extending direction of the pressing strip and the extending direction of the clamping groove are parallel.
Further, two clamping grooves which are arranged in parallel are formed in the sliding block, one compressed sample is clamped in each clamping groove, and the grinding head can grind the end faces of the two compressed samples simultaneously.
Further, the base includes the bottom plate and is located first boss, second boss, dog and the baffle on the bottom plate, wherein:
the first boss and the second boss are arranged in parallel;
The baffle plate is connected with the stop block through the first boss and the second boss,
The stop block, the first boss, the second boss and the baffle are arranged on the bottom plate to form a containing groove capable of containing the sliding block.
Further, the clamping mechanism further comprises a sliding block pushing screw connected with the baffle plate, and the distance between the sliding block and the stop block can be adjusted through the sliding block pushing screw.
Further, the driving mechanism comprises a bracket, a motor and a coupler; the motor is arranged on the base through the bracket; the coupler is in transmission connection with the motor and is used for transmitting the power of the motor to the grinding head.
Further, a positioning groove is formed in the base, and the support is close to or far away from the clamping mechanism along the positioning groove through a support fixing screw.
In a second aspect, the present invention also provides a method for treating an end surface of a compressed sample of a fiber-reinforced composite material, comprising:
The position of the sliding block is adjusted by pushing the screw through the sliding block, so that the sliding block is tightly attached to the stop block;
The positions of the bracket and the motor are adjusted through the positioning groove and the bracket fixing screw, and after the positions are adjusted, the bracket fixing screw is screwed to fix the position of the motor;
the position of the sliding block is adjusted by pushing the screw through the sliding block, so that the sliding block is tightly attached to the baffle;
Placing a compressed sample with qualified width and thickness directions in a clamping groove of the sliding block, wherein a groove on the compressed sample is aligned with a first positioning protrusion;
Pushing the pressing bar position through the pressing bar fastening screw, so that the side surface of the clamping groove and the side surface of the pressing bar clamp the compressed sample, and simultaneously, the first positioning bulge and the second positioning bulge on the pressing bar are respectively opposite to the grooves on the two sides of the compressed sample;
and starting the motor to polish, and pushing the screw to push the slide block until the slide block is clung to the stop block.
The device and the method for treating the end face of the compressed sample of the fiber reinforced composite material have the following beneficial effects:
The first aspect of the present invention provides a fiber reinforced composite material compression sample end surface treatment apparatus, comprising: the grinding head comprises a base, a clamping mechanism, a grinding head and a driving mechanism; the clamping mechanism is positioned on the base and used for clamping and positioning the compressed sample; the grinding head and the driving mechanism are both positioned on the base, the grinding head is opposite to the clamping mechanism, and the grinding surface of the grinding head is vertical to the axis of the compressed sample clamped in the clamping mechanism; the driving mechanism is in transmission connection with the grinding head and is used for driving the grinding head to polish the end face of the compressed sample.
The fiber reinforced composite material compression sample comprises a composite material laminated board sample body, and a first lower reinforcing sheet, a first upper reinforcing sheet, a second lower reinforcing sheet and a second upper reinforcing sheet which are adhered on the surface of the sample body. A first upper reinforcing sheet and a first lower reinforcing sheet; the second lower reinforcing sheet and the second upper reinforcing sheet are symmetrically adhered to the surface of the sample body through adhesive. The two end surfaces of the sample are required to be parallel to each other and is perpendicular to the center line of the long axis of the sample. By adopting the fiber reinforced composite material compression sample end face processing device provided by the first aspect of the invention, the clamping mechanism can accurately position the sample, the long axis of the sample cannot deviate when the same sample respectively positions two ends, and the end faces of the sample are polished by polishing faces perpendicular to the positioning axis, so that the parallelism of the two end faces and the perpendicularity of the end faces and the long axis of the sample can be ensured simultaneously.
The fiber reinforced composite material compressed sample end surface treatment method provided by the second aspect of the invention adopts the fiber reinforced composite material compressed sample end surface treatment device provided by the first aspect of the invention, so that the fiber reinforced composite material compressed sample end surface treatment device provided by the first aspect of the invention has all the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a device for treating an end face of a compressed sample of a fiber-reinforced composite material according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the structural exploded view of a device for treating an end face of a compressed sample of a fiber-reinforced composite material according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a compressed sample in a fiber reinforced composite material compressed sample end surface treatment apparatus according to an embodiment of the present invention.
Icon: 1-a bottom plate; 2-a first boss; 3-a second boss; 4-baffle plates; 5-a baffle fastening screw; 6-a stop block; 7-a stop fastening screw; 8-a first positioning groove; 9-a second positioning groove; 10-pressing bar fastening screws; 11-layering guide posts; 12-a third boss; 13-fourth boss; 14-layering; 15-a fifth boss; 16-sixth bosses; 17-seventh boss; 18-a bracket; 19-a bracket set screw; 20-an electric motor; 21-a motor set screw; 22-grinding head; a 23-coupling; 24-compressing the sample; 25-slide advance screw; 26-eighth boss; 27-ninth boss; 28-sample body; 29-a first lower reinforcement sheet; 30-a first upper reinforcement sheet; 31-a second lower reinforcement sheet; 32-a second upper reinforcement sheet; 33-a first end face; 34-a second end face.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to fig. 1,2 and 3, a device and a method for processing an end surface of a compressed fiber reinforced composite sample according to an embodiment of the present invention will be described in detail below.
An embodiment of a first aspect of the present invention provides a fiber reinforced composite material compression sample end face processing apparatus, including: the base, the clamping mechanism, the grinding head 22 and the driving mechanism;
the clamping mechanism is positioned on the base and used for clamping and positioning the compressed sample 24;
The grinding head 22 and the driving mechanism are both positioned on the base, the grinding head 22 is opposite to the clamping mechanism, and the grinding surface of the grinding head 22 is vertical to the axis of the compressed sample 24 clamped in the clamping mechanism;
the driving mechanism is in transmission connection with the grinding head 22 and is used for driving the grinding head 22 to grind the end face of the compressed sample 24.
As shown in fig. 3, the fiber reinforced composite material compressed sample includes a composite material laminate sample body 28, and a first lower reinforcing sheet 29, a first upper reinforcing sheet 30, a second lower reinforcing sheet 31, and a second upper reinforcing sheet 32 attached to the surface of the sample body 28. A first upper reinforcing sheet 30 and a first lower reinforcing sheet 29; the second lower reinforcing sheet 31 and the second upper reinforcing sheet 32 are symmetrically adhered to the surface of the sample body 28 by adhesive. The two end surfaces of the sample are required to be parallel to each other and is perpendicular to the center line of the long axis of the sample. By adopting the fiber reinforced composite material compression sample end face processing device provided by the first aspect of the invention, the clamping mechanism can accurately position the sample, the long axis of the sample cannot deviate when the same sample respectively positions two ends, and the end faces of the sample are polished by polishing faces perpendicular to the positioning axis, so that the parallelism of the two end faces and the perpendicularity of the end faces and the long axis of the sample can be ensured simultaneously. In an alternative scheme of this embodiment, still further, the base includes bottom plate 1 and is located first boss 2, second boss 3, dog 6 and baffle 4 on the bottom plate 1, wherein:
the first boss 2 and the second boss 3 are arranged in parallel;
the baffle 4 and the stop 6 are connected through the first boss 2 and the second boss 3,
The baffle 6, the first boss 2, the second boss 3 and the baffle 4 form a containing groove which can contain the sliding block on the bottom plate 1.
In an alternative scheme of this embodiment, further, the clamping mechanism includes a slider, at least one clamping groove is provided in the slider, and a pressing bar 14 for pressing the compressed sample 24 against one side of the clamping groove is installed in the clamping groove, so that the end face of the compressed sample 24 is parallel to the polishing surface of the polishing head 22, and the axis of the compressed sample 24 is perpendicular to the polishing surface of the polishing head 22.
In an alternative scheme of the embodiment, further, a first positioning protrusion matched with the groove on the compressed sample 24 is arranged on the side surface of the clamping groove, which is close to the compressed sample 24;
the side of the bead 14 adjacent the compressed sample 24 is provided with a second locating projection that mates with a recess in the compressed sample 24.
In an alternative scheme of the embodiment, further, the pressing bar 14 is connected with the sliding block through the pressing bar fastening screw 10, and the pressing bar 14 is positioned with the sliding block through the pressing bar guide post 11, so that the extending direction of the pressing bar 14 and the extending direction of the clamping groove are parallel.
In an alternative scheme of this embodiment, further, two parallel clamping grooves are provided on the slider, each clamping groove is clamped with one compressed sample 24, and the grinding head 22 can grind the end faces of two compressed samples 24 simultaneously.
In an alternative of this embodiment, the clamping mechanism further comprises a slider pushing screw connected to the baffle 4, and the distance between the slider and the stop 6 can be adjusted by the slider pushing screw.
In an alternative of this embodiment, the driving mechanism further includes a bracket 18, a motor 20, and a coupling 23; the motor 20 is mounted on the base through the bracket 18; coupling 23 is in driving connection with motor 20 for transmitting the power of motor 20 to grater 22.
In an alternative scheme of the embodiment, a positioning groove is further formed in the base, and the bracket 18 is close to or far from the clamping mechanism along the positioning groove through the bracket fixing screw 19.
In at least one embodiment, the fiber reinforced composite compression sample end face treatment apparatus comprises:
The bottom plate 1 is provided with a first supporting surface for supporting the bracket 18, a first positioning groove 8 and a second positioning groove 9 for positioning the bracket 18, a first end surface 33 for supporting and fixing the stop block 6, a second end surface 34 for supporting and fixing the baffle plate 4, a second supporting surface for supporting and guiding the sliding block, and a first boss 2 and a second boss 3 for positioning and guiding the sliding block.
The slide block is provided with a third end face for pressing against the baffle plate 4, a fourth end face for pressing against the stop block 6, a third supporting face for pressing against and guiding to the bottom plate 1, a third boss 12 and a fourth boss 13 for positioning and guiding the first boss 2 and the second boss 3 of the bottom plate 1, the third boss 12 and the fourth boss 13 are provided with two boss outer side faces which are contacted with the inner side faces of the first boss 2 and the second boss 3 of the bottom plate 1, three fastening screw holes for pressing against the pressing bar 14 and two guide holes for positioning the pressing bar 14, the slide block is provided with a fifth boss 15 for pressing against and positioning a sample, the fifth boss 15 is provided with a fourth supporting face for pressing against a clamping section of the fiber reinforced composite material compression sample, a sixth boss 16 and a seventh boss 17 for pressing against and positioning the working section of the compression sample, and a fifth supporting face for pressing against the side face of the sample.
The pressing bar 14 is provided with two pressing bar guide posts 11 matched with the slide block guide holes, screw end positioning holes matched with the slide block fastening screw holes, eighth bosses 26 and ninth bosses 27 for pressing and positioning the working sections of the compressed samples corresponding to the sixth boss 16 and the seventh boss 17, and a sixth supporting surface for pressing the clamping sections of the samples.
The shutter 4 has a shutter fastening screw 5 which is matched with the second end surface 34 of the base plate 1, has a fifth end surface for pressing against the third end surface of the slider, and has a screw hole which is matched with the slider pushing screw 25.
The stopper 6 has a stopper fastening screw 7 which is matched with the first end face 33 of the base plate 1, and has a sixth end face for pressing against the fourth end face of the slider.
The bracket 18 has a seventh support surface matching with the first support surface of the base plate 1, has a third positioning groove and a fourth positioning groove matching with the first positioning groove 8 and the second positioning groove 9 of the base plate 1, has a bracket fixing screw 19 connected with the first support surface of the base plate 1, has an eighth support surface for pressing the fixing end surface of the motor 20, and has a motor fixing screw 21 with the end surface of the motor 20.
Grinding head 22 has a disc grinding wheel having a grinding plane parallel to the end face of the sample and a spindle connected to coupling 23 and perpendicular to the grinding plane.
The motor 20 has a fixed end surface of the motor 20 matched with the eighth supporting surface of the bracket 18.
Coupling 23 connects motor 20 shaft of motor 20 with grinding head 22 shaft handle.
The positions of the motor 20 in the first positioning groove 8 and the second positioning groove 9 of the bottom plate 1 are adjusted to ensure that the polishing plane of the polishing head 22 is perpendicular to the fourth supporting surface of the sliding block and the sixth supporting surface of the pressing strip 14 of the pressing sample clamping section and perpendicular to the fifth supporting surface of the sliding block of the pressing sample side surface. So as to ensure the perpendicularity of the polishing plane and the long axis of the sample. The sixth boss 16 for pressing and positioning the working section of the compressed sample and the eighth boss 26 for pressing and positioning the working section of the compressed sample are provided through the sliding blocks, the seventh boss 17 for pressing and positioning the working section of the compressed sample and the ninth boss 27 for pressing and positioning the working section of the compressed sample are provided through the sliding blocks, the sliding blocks are provided for pressing and positioning the fourth end face of the stop block 6 and the sixth end face of the stop block 6, and the length of the clamping section of the sample is ensured.
The pressing bar guide post 11 ensures that the pressing bar 14 can only perform transverse directional displacement on the sliding block, thereby controlling the distance from the eighth boss 26 and the ninth boss 27 to the grinding surface of the grinding head 22 to be constant, and ensuring that the lengths of all the sample clamping sections subjected to end surface treatment are constant and meet the standard.
The above-described embodiments of the present invention have the following advantages:
1. the accurate positioning sample can be realized, the positioning accuracy of the sample in the processing process can not be influenced, and the processing end face of the sample can be fully ensured to be perpendicular to the center line of the long axis of the sample.
2. The positioning positions of the same type of samples are high in recurrence degree, namely, each time the samples are placed, the coincidence of the center lines of the long axes of the samples can be ensured, and the parallelism of the end faces of each sample which is processed is ensured.
3. The consistency of the length of the clamping section of the reinforced area after the same sample is processed is high.
4. The clamping sections of the sample reinforcing area can be adjusted to meet the different length requirements according to the requirements or standard requirements.
5. The end face processing requirements of the fiber reinforced composite material compression sample with different thicknesses can be met.
6. Two samples can be processed simultaneously.
7. The tool specification degree is high, the operation is simple, and the influence of human operation factors on sample processing can be effectively reduced.
An embodiment of the second aspect of the present invention provides a method for treating an end face of a compressed sample of a fiber-reinforced composite material, comprising:
the position of the sliding block is adjusted by pushing the screw 25 through the sliding block, so that the sliding block is tightly attached to the stop block 6;
the positions of the bracket 18 and the motor 20 are adjusted through the positioning groove and the bracket fixing screw 19, and after the positions are adjusted, the bracket fixing screw 19 is screwed to fix the position of the motor 20;
the position of the sliding block is adjusted by pushing the screw 25 through the sliding block, so that the sliding block is tightly attached to the baffle 4;
placing a compressed sample 24 with qualified width and thickness directions in a clamping groove of a sliding block, wherein a groove on the compressed sample 24 is aligned with a first positioning protrusion;
The clamping groove side surface and the pressing strip 14 side surface clamp the compressed sample 24 by pushing the pressing strip 14 through the pressing strip fastening screw 10, and meanwhile, the first positioning bulge and the second positioning bulge on the pressing strip 14 are respectively opposite to the grooves on the two sides of the compressed sample 24;
the motor 20 is started to polish, and the slide is pushed into position until the slide is closely attached to the stop 6 by the slide pushing screw 25.
To ensure that the first end face 33 and the second end face 34 of the compressed fiber-reinforced composite material sample 24 of fig. 3 are parallel to each other and perpendicular to the long axis center line of the sample, the grinding head 22 grinds the plane and three faces for fixing the position of the sample, namely, the fourth support face of the slide block and the sixth support face of the pressing bar 14 against the clamping section of the sample are perpendicular and perpendicular to the fifth support face of the slide block against the side face of the sample. After the sample is placed, the sample is positioned by controlling the pressing bar 14 through the pressing bar fastening screw 10, and meanwhile, the axial position of the sample is controlled through the boss, so that the first end face 33 and the second end face 34 of the processed sample are parallel to each other and perpendicular to the central line of the long axis of the sample, the length of the reinforced areas at the two ends of the sample is controllable, and the length of the processed sample can be kept consistent.
The method for treating the end face of the compressed sample of the fiber reinforced composite material provided by the embodiment of the second aspect of the invention comprises the following specific operation steps:
1. The position of the slide is adjusted by pushing the screw 25 with the slide so that the fourth end face of the slide is in close contact with the sixth end face of the stopper 6.
2. According to the size requirement of the standard required sample type, the position of the motor 20 is adjusted through the positioning groove and the bracket fixing screw 19, so that the distance between the grinding plane of the grinding head 22 and the left edge of the sixth boss 16 is consistent with the length of the standard required fiber reinforced composite material compressed sample reinforcing area, the grinding plane of the grinding head 22 and three surfaces for fixing the sample position, namely the fourth supporting surface of the sliding block and the sixth supporting surface of the pressing strip 14, which are used for pressing the clamping section of the sample, are vertical and are vertical to the fifth supporting surface of the sliding block, which is used for pressing the side surface of the sample, and after the position is adjusted, the bracket 18 is screwed with the bracket fixing screw 19 of the bottom plate 1 to fix the position of the motor 20.
3. The position of the slide is adjusted by pushing the screw 25 with the slide so that the third end face of the slide is in close contact with the fifth end face of the baffle 4.
4. And placing the compressed fiber reinforced composite material sample with qualified width and thickness directions on a fifth supporting surface of the sliding block, and aligning a working section in the middle of the sample with the sixth boss 16 or the seventh boss 17.
5. The position of the pressing strip 14 is pushed by the pressing strip fastening screw 10, so that the fourth supporting surface of the sliding block which is propped against the sample clamping section and the sixth supporting surface of the pressing strip 14 clamp the sample clamping section, and meanwhile, the sliding block and a sixth boss 16, a seventh boss 17, an eighth boss 26 and a ninth boss 27 on the pressing strip 14 are opposite to the middle working section of the sample. And (5) fastening and positioning the sample.
6. The motor 20 is started to polish, and the slide block is slowly pushed by the slide block pushing screw 25 until the fourth end surface of the slide block is clung to the sixth end surface of the stop block 6. The polishing of the end face of the sample was completed.
7. The sample is removed with reference to step 5.
8. Repeating 1-7 steps to finish the processing of the other end face of the sample.
9. The end surfaces of two samples can be processed simultaneously as required.
The fiber reinforced composite material compression property test piece has a composite material laminate test piece body 28, and a first lower reinforcing sheet 29, a first upper reinforcing sheet 30, a second lower reinforcing sheet 31, and a second upper reinforcing sheet 32 adhered to the surface of the test piece body 28. A first upper reinforcing sheet 30 and a first lower reinforcing sheet 29; the second lower reinforcing sheet 31 and the second upper reinforcing sheet 32 are symmetrically adhered to the surface of the sample body 28 by adhesive. The exposed portion of the sample body 28 between the first lower reinforcing sheet 29 and the second lower reinforcing sheet 31, and between the first upper reinforcing sheet 30 and the second upper reinforcing sheet 32 is required to meet the requirements. As shown in FIG. 3, the left and right opposite center lines of the sample are mirror symmetrical, the cross section of the sample is mirror symmetrical in the thickness of the sample body 28, and the first end surface 33 and the second end surface 34 are parallel to each other and perpendicular to the center line of the long axis of the sample.
In summary, after the composite material compression sample is processed, the parallelism between the first end surface 33 and the second end surface 34 of the sample and the verticality between the two end surfaces and the long axis center line of the sample can be greatly improved. Subsequent processing of samples of different clamp section lengths can be satisfied by adjusting the position of motor 20. And the fourth supporting surface of the sliding block of the pressing sample clamping section is vertical to the sixth supporting surface of the pressing strip 14, and the fifth supporting surface of the sliding block of the side surface of the pressing sample is vertical to the three surfaces of the sample, so that the pressing sample with enough area is ensured, and the sample is prevented from shaking in the processing process to influence the processing precision. The width of the sixth boss 16, the seventh boss 17 is given by the relevant standard (GB/T5258, ISO 14126). The distance between the edges of sixth boss 16, seventh boss 17 and the grinding plane of grinding head 22 is given by the relevant standard (GB/T5258, ISO 14126) for accurately locating the length of the reinforced area of compressed sample 24.
The fiber reinforced composite material compression sample end surface treatment method provided by the embodiment of the second aspect of the invention adopts the fiber reinforced composite material compression sample end surface treatment device provided by the embodiment of the first aspect of the invention, so that the fiber reinforced composite material compression sample end surface treatment device provided by the embodiment of the first aspect of the invention has all the beneficial effects.
While the fiber reinforced composite material compressed sample end surface treatment apparatus and method of the present invention have been described above, the present invention is not limited to the above-described specific embodiments, and various modifications and changes may be made without departing from the scope of the claims. The present invention includes various modifications and alterations within the scope of the claims.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
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| CN116100457A (en) * | 2023-02-13 | 2023-05-12 | 浙江中智鲸工智能装备有限公司 | An automatic grinding device for verticality of screw nut mounting surface |
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