CN114965136A - Method and device for testing sharpness of antique sword - Google Patents
Method and device for testing sharpness of antique sword Download PDFInfo
- Publication number
- CN114965136A CN114965136A CN202210464125.4A CN202210464125A CN114965136A CN 114965136 A CN114965136 A CN 114965136A CN 202210464125 A CN202210464125 A CN 202210464125A CN 114965136 A CN114965136 A CN 114965136A
- Authority
- CN
- China
- Prior art keywords
- sword
- antique
- cutting
- sharpness
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a method for testing sharpness of an antique sword, which comprises the following steps: driving the antique sword to cut the material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the material is 40-70A; recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera; recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer; acquiring cutting depths during cutting and breaking based on an image of the material cutting process of the antique sword and knife along with time change, and calculating cutting work and breaking work; finally, calculating the sharpness of the antique sword; the method can ensure that the cutting angle of the cut material and the designated position of the sword is stable, realize quasi-static cutting, eliminate the damage of impact stress to the cutting edge of the antique sword, reduce the damage of the test process to the antique sword, finely monitor the material cutting process, obtain various physical quantities in the cutting process and more accurately analyze the sharpness of the material.
Description
Technical Field
The invention relates to the field of testing of artware of knives and swords, in particular to a method and a device for testing the sharpness of an antique knife and sword.
Background
The antique sword is a collectable handicraft imitating the form of ancient weapons in China and abroad, the edged antique sword is sharper than the edged antique sword, China controls the edged sword and dagger, and the whole length of the sword and the vertex angle of the knife tip are mainly specified. Because ancient cold weapon forms are different, and the blade form of archaize sword is various, and the sharpness of same sword different positions also differs, relies on geometric standard alone and is not enough to fully evaluate the sharpness and the danger of archaize sword completely, needs to propose standardized sharpness measuring method and equipment, realizes the quantitative evaluation to the special position sharpness of archaize sword.
At present, methods for evaluating the sharpness of the cutting edge are mainly based on cutting depth: the depth of cut method refers to pressing a cutting medium (usually paper or foil) with a certain pressure to make the medium contact with an antique sword, and characterizing sharpness by recording the depth of the medium fracture (or the number of layers of a multi-layer medium). The cutting depth test applies impact stress on the antique sword, and damages the surface of the antique sword.
At present, the method for testing the sharpness of the edge mainly uses a wider medium to press down, carries out macroscopic evaluation on the whole cutting edge of the antique sword, and cannot carry out fine monitoring on the material cutting process, so that the sharpness analysis of the antique sword cannot be realized.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provides a method and a device for testing the sharpness of an antique sword.
The method for testing the sharpness of the antique sword comprises the following steps:
driving the antique sword to cut the fixing material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the fixing material is 40-70A;
recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera;
recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer;
acquiring a cut-in time point and a fracture time point based on an image of the time-varying process of cutting the material by the antique sword, and calculating the cutting depth during cutting and fracture according to the cut-in time point and the fracture time point and the antique sword speed;
calculating the cutting-in work and the fracture work based on the stress of the antique sword and knife which changes along with the time in the process of cutting the material and the cutting depth in the cutting-in process and the fracture process;
and calculating the sharpness of the antique sword according to the cutting depth, the cutting work and the fracture work during the cutting and the fracture.
Specifically, based on the stress of the antique sword and knife cutting material process that changes with time and the cutting depth when cutting and breaking, work of cutting in and the work of breaking are calculated, specifically are:
wherein d is 1 To the depth of cut at the time of incision, d 2 The cutting depth during the exercise is F is the stress of the antique sword and knife cutting material process changing along with the time, W 1 For the cutting work, W 2 The work of fracture.
Specifically, according to the depth of cut and the work of fracture when cutting into with the fracture, calculate archaize sword sharpness, specifically be:
S＝Index 1 *Index 2
therein, Index 1 Representing dimensionless parameters characterizing sharpness based on plunge, Index 2 And a dimensionless parameter representing sharpness based on fracture, wherein t is the thickness of a cut workpiece, K is the fracture toughness of a cut material, and S is the sharpness of the antique sword.
Another embodiment of the present invention provides an antique sword sharpness testing apparatus, including: the device comprises an antique sword and knife feeding mechanism, an antique sword and knife clamping device, a material height adjusting device, a material fixing device, a laser tool setting device, a dynamometer and a high-speed camera;
archaize sword clamping device sets up on archaize sword feed mechanism, archaize sword feed mechanism drive archaize sword low-speed motion, archaize sword clamping device is on archaize sword feed mechanism's slider, material fixing device sets up on material height adjusting device's movable block, material height adjusting device drive adjusts the relative height of archaize sword and cutting material, laser tool setting device is fixed in archaize sword feed mechanism central line top, the dynamometer is installed between archaize sword feed mechanism slider and archaize sword clamping device, the high-speed camera is installed at material height adjusting device tip and perpendicular to cutting plane, the dynamometer is connected with high-speed camera signal and computer, feed mechanism, laser tool setting device, dynamometer and the independent power supply of high-speed camera.
Specifically, the antique sword and knife feeding mechanism is realized by controlling the transmission of a lead screw through a stepping motor, a dynamometer mounting seat is fixed with a sliding block of the lead screw, the antique sword and knife clamping device is connected with the dynamometer mounting seat through a guide pillar, and the antique sword and knife clamping device are manually adjusted and connected.
Specifically, the material height adjusting device is realized through transmission of a control rod of a stepping motor, two sides of the material fixing device are fixed with a moving block of the control rod through bolts, the cut material is symmetrically placed on the material fixing device along the central line of the material height adjusting device, and the material pressing sheet is placed on the cut material and fixedly connected with the material fixing device through bolts.
Specifically, the sliding block of the antique sword and knife feeding mechanism and the clamping device move linearly together, the moving range of the sliding block is 100-300 mm, the moving precision is not more than 0.02 mm, and the moving speed is not more than 10mm per minute.
Specifically, the moving block of the material height adjusting device and the material fixing device move linearly together, and the moving accuracy of the moving block is not more than 0.05 mm.
Specifically, the thickness of the material to be cut is between 2 mm and 10mm, the length is between 50 mm and 100 mm, and the width is between 25 mm and 40 mm.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
(1) the invention provides a method for testing sharpness of an antique sword, which comprises the following steps: driving the antique sword to cut the fixing material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the fixing material is 40-70A; recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera; recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer; acquiring a cut-in time point and a fracture time point based on an image of the time-varying process of cutting the material by the antique sword, and calculating the cutting depth during cutting and fracture according to the cut-in time point and the fracture time point and the antique sword speed; calculating the cutting-in work and the fracture work based on the stress of the antique sword and knife which changes along with the time in the process of cutting the material and the cutting depth in the cutting-in process and the fracture process; calculating the sharpness of the antique sword according to the cutting depth and the cutting work of the antique sword and the antique sword during cutting and breaking; the method provided by the invention can ensure that the cutting angle of the cut material and the designated position of the sword is stable, realize quasi-static cutting, eliminate the damage of impact stress to the cutting edge of the antique sword, reduce the damage of the test process to the antique sword, and perform fine monitoring in the material cutting process, acquire each physical quantity in the cutting process and perform more accurate analysis on the sharpness.
(2) The invention provides an antique sword sharpness testing device, wherein an antique sword feeding mechanism is realized by controlling transmission of a lead screw through a stepping motor, a dynamometer mounting seat is fixed with a sliding block of the lead screw, an antique sword clamping device is connected with the dynamometer mounting seat through a guide pillar, and the antique sword is manually adjusted and connected with the antique sword clamping device, so that the blade of a tested part of the antique sword is perpendicular to the plane of a test bench and is orthogonally cut with a cut material, and the damage of impact stress to the blade of the antique sword is eliminated.
(3) The invention provides a device for testing sharpness of an antique sword, wherein a material height adjusting device is realized through transmission of a control rod of a stepping motor, two sides of a material fixing device are fixed with a moving block of the control rod through bolts, a cut material is symmetrically placed on the material fixing device along the central line of the material height adjusting device, a material pressing sheet is placed on the cut material and is fixedly connected with the material fixing device through bolts, the cut material can be ensured to be vertical to a blade at the position where the antique sword is fixed, the material pressing sheet and the cut material except the pressing sheet are completely fixed in the cutting process, only the material at the middle position is influenced by cutting force to generate deformation, and a foundation is provided for accurate sharpness analysis.
(4) The method provided by the invention is simple and convenient, only a workpiece and an antique sword need to be clamped in a single operation, and the testing position of the knife edge is accurately controlled through the screw rod; the acquired data is accurate, and zero alignment is acquired by contrasting the high-speed camera with the dynamometer; the parameters are obtained in various ways, a plurality of evaluation parameters can be obtained by one-time cutting, and the contingency of single parameter judgment is reduced; the response speed is high, only the key frames of the entry points and the fracture points of the camera need to be judged manually, and the operation is completed through the assistance of a computer.
Drawings
FIG. 1 is a flow chart of a method for testing sharpness of an antique sword, which is provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an antique sword sharpness testing device provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of the archaized sword clamp and the position of the dynamometer provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of workpiece clamping of the apparatus according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a pressure-displacement curve provided by an embodiment of the present invention;
the invention is described in further detail below with reference to the figures and specific examples.
Detailed Description
In the claims, the specification and the drawings of this specification, unless explicitly defined otherwise, the terms "first", "second" or "third", etc. are used to distinguish between different items and not to describe a particular order.
In the claims, the specification and the drawings described above, unless otherwise expressly limited, directional terms such as "central," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are used herein to indicate an orientation or positional relationship relative to the illustrated drawings and are used for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be construed as limiting the scope of the present specification.
In the claims, the specification and the drawings of the present specification, unless otherwise specifically limited, the terms "fixedly connected" and "fixedly connected" should be understood in a broad sense, i.e., any connection between the two that has no relative displacement or rotation, i.e., including non-detachable fixed connection, integrated connection and fixed connection through other devices or elements.
In the claims, the specification and the drawings described above, the terms "including", "having", and variations thereof, if used, are intended to be inclusive and not limiting.
Referring to fig. 1, an operation flow chart of a method for testing sharpness of an antique sword provided by an embodiment of the present invention specifically includes:
the method for testing the sharpness of the antique sword comprises the following steps:
s101: driving the antique sword to cut the fixing material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the fixing material is 40-70A;
the method provided by the invention can ensure that the cutting angle of the cut material and the designated position of the sword is stable, realize quasi-static cutting, eliminate the damage of impact stress to the cutting edge of the antique sword, reduce the damage of the test process to the antique sword,
s102: recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera;
s103: recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer;
s104: acquiring a cut-in time point and a fracture time point based on an image of the time-varying process of cutting the material by the antique sword, and calculating the cutting depth during cutting and fracture according to the cut-in time point and the fracture time point and the antique sword speed;
the method comprises the following steps of carrying out fine monitoring on a material in a cutting process, obtaining various physical quantities in the cutting process, and carrying out more accurate analysis on the sharpness of the material; the method is simple and convenient, the obtained data is accurate, and zero alignment is obtained by contrasting the high-speed camera with the dynamometer; the parameters are obtained in a variety, a plurality of evaluation parameters can be obtained by cutting once, and the contingency of single parameter judgment is reduced.
S105: calculating the cutting-in work and the fracture work based on the stress of the antique sword and knife which changes along with the time in the process of cutting the material and the cutting depth in the cutting-in process and the fracture process;
based on the stress of the process of cutting materials by the antique sword and the cutting depth of the materials during cutting and breaking, the cutting work and the breaking work are calculated, and the method specifically comprises the following steps:
wherein d is 1 To the depth of cut at the time of incision, d 2 The cutting depth during the exercise is F is the stress of the antique sword and knife cutting material process changing along with the time, W 1 For the cutting work, W 2 The work of fracture.
S106: and calculating the sharpness of the antique sword according to the cutting depth, the cutting work and the fracture work during the cutting and the fracture.
According to the depth of cut and the work of rupture when cutting into with the fracture, calculate archaize sword sharpness, specifically do:
S＝Index 1 *Index 2
therein, Index 1 Representing dimensionless parameters characterizing sharpness based on plunge, Index 2 And a dimensionless parameter representing sharpness based on fracture is shown, t is the thickness of a cut workpiece, K is fracture toughness of a cut material, and S is the sharpness of the antique sword.
As shown in fig. 2, an embodiment of the present invention provides an antique sword sharpness testing apparatus, which includes an antique sword feeding mechanism 1, an antique sword clamping device 14, a material height adjusting device 2, a material fixing device 23, a laser knife setting device 4, a force measuring instrument 5 and a high-speed camera 3;
antique sword clamping device 14 sets up on antique sword feed mechanism 1, antique sword feed mechanism 1 drive antique sword low-speed motion, antique sword clamping device 14 is on the slider of antique sword feed mechanism 1, material fixing device 23 sets up on the movable block of material height adjusting device 2, the relative height of material height adjusting device 2 drive regulation antique sword and cutting material, laser tool setting device 4 is fixed above the antique sword feed mechanism 1 central line, dynamometer 5 installs between antique sword feed mechanism 1 slider and antique sword clamping device 14, high-speed camera 3 is installed at material height adjusting 2 device tip and perpendicular to cutting plane, dynamometer 5 is connected with high-speed camera 3 signal and computer, sword feed mechanism 1, laser tool setting device 4 are antique sword feed mechanism 1, the relative height of material height adjusting device 2, and the relative height of cutting material, the dynamometer 5, The load cell 5 is powered independently of the high speed camera 3.
As shown in fig. 3, the antique sword and knife feeding mechanism 1 is realized by controlling the transmission of a screw rod 12 through a stepping motor, a mounting seat 13 of the dynamometer 1 is fixed with a slide block of the screw rod 12, an antique sword and knife clamping device 14 is connected with a mounting seat 13 of the dynamometer 5 through a guide post, and the antique sword and knife 11 is manually adjusted and connected with the clamping device 14. With this structure, it is ensured that the blade of the tested part of the antique sword 11 is perpendicular to the plane of the test bench and cuts orthogonally to the material 21 to be cut.
As shown in fig. 4, the material height adjusting device 2 is realized by the transmission of a control rod 22 of a stepping motor, the material fixing device 23 (two sides) is fixed with a moving block of the control rod 22 through bolts, the length direction of the cut material 21 is symmetrically placed on the material fixing device 23 along the central line of the mechanism 2, and the material pressing sheet 24 is placed on the cut material 21 and is fixedly connected with the material fixing device 23 through bolts. By utilizing the structure, the cut material 21 can be ensured to be vertical to the blade at the fixed position of the antique sword 11, the material pressing sheet 24 and the cut material 21 except the pressing sheet 24 are completely fixed in the cutting process, and only the material at the middle position is influenced by the cutting force to generate deformation.
The stepping motors of the control screw rod 12 and the control rod 22 are powered by an external power supply, and the movement of the stepping motors is controlled by a computer.
The high-speed camera 3 is fixed in the structure top, is located directly over archaize sword 11 and the contact position of cutting material 21, shoots the direction and is perpendicularly downwards by cutting material 21. The high-speed camera 3 is powered by a battery, and shot images and videos are transmitted to a computer through a data line.
Laser tool setting device 4 is fixed in the structure top, is located archaize sword movement mechanism 1 central line, apart from high-speed camera 3 about 50 millimeters, and the perpendicular cut material 21 of laser direction is downward. The laser tool setting device 4 is powered by a battery.
The dynamometer 5 is fixed on a dynamometer 5 mounting seat 13, and the measuring head is in contact with an antique sword clamping device 14. The dynamometer 5 is powered by an external power supply, and mechanical signals are transmitted to a computer through a transmitter and a data line.
The structure of the embodiment of the invention has the following advantages: the movement is accurate, the screw rod is controlled by using the stepping motor to complete the movement, and the feeding speed and the cutting edge testing height of the antique sword are accurately controlled; the clamping is reliable, and the angle position relation between the antique knife and the cut material can be guaranteed to be correct.
In the preferred embodiment, the hardness of the cut material 21 is between 40A and 70A shore hardness, the thickness is between 2 mm and 10mm, the length is between 50 mm and 100 mm, and the width is between 25 mm and 40 mm. Preferably, the cutting process is performed with an antique sword 11 having a feed rate of between 2 mm per minute and 10mm per minute.
As shown in fig. 1 to 4, the specific operation flow of the structure of the embodiment is as follows:
And step 2, aligning the antique sword and knife. Control archaize sword feed mechanism 1's step motor makes archaize sword 11 is located the preset position under laser tool setting device 4, archaize sword 11 is fixed in archaize sword clamping device 14 through two side button head screws, and when laser energy covered the required measuring position blade both sides of straight sword 11, screw up button head set screw, make sword 11 fix in archaize sword clamping device 14, show that the tool setting is accomplished. And (3) controlling the stepping motor of the antique sword and knife feeding mechanism 1 again to enable the knife edge to be close to the material position, wherein the knife edge is generally set to be about 1 mm.
And 3, cutting the antique sword and recording data. Opening the data acquisition channel of high-speed camera 3 and dynamometer 5, control archaize sword feed mechanism 1's step motor to the cutting material 21 is fed to the low-speed, until material 21 breaks completely, archaize sword feed mechanism 1 stops the back, takes off cutting material 21 and control archaize sword feed mechanism 1 reverse motion and get back to the normal position, closes the data acquisition channel of high-speed camera 3 and dynamometer 5.
And 4, data fusion processing. And observing the high-speed camera 3 frame by frame, recording the moment when the cutting edge of the antique sword 11 contacts the cut material 21 as a camera zero point, recording the moment when the cutting edge generates a damage crack on the surface as a camera entry point, and recording the moment when the cutting edge completely penetrates the cut material 21 as a camera fracture point. The previous data point where the load cell 5 first displayed a non-zero reading was taken and recorded as the zero point of the load cell. Correspondingly, the entry point and the fracture point of the dynamometer curve are obtained according to the entry point and the fracture point of the camera.
And 5, calculating parameters. As shown in FIG. 5, the cutting depth of the surface crack and fracture is calculated as a parameter d according to the time of the cut-in point and the fracture point and the feed speed of the screw rod 1 、d 2 (ii) a According to the maximum value of the readings of the force measuring instrument 5 before the entry point and before the fracture point, the parameter F is used max1 、F max2 (ii) a According to the force measuring curve from zero point to the entry point and from zero point to the fracture point, the work done by the antique sword 11 from cutting to entry and complete fracture is calculated and used as a parameter W 1 、W 2 . In general, the test standards consider the above parameters and the Index calculated from the above parameters and the formula set forth in the claims 1 、Index 2 The smaller the parameter, the sharper the antique sword.
The invention provides a method for testing sharpness of an antique sword, which comprises the following steps: driving the antique sword to cut the fixing material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the fixing material is 40-70A; recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera; recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer; acquiring a cut-in time point and a fracture time point based on an image of the time-varying process of cutting the material by the antique sword, and calculating the cutting depth during cutting and fracture according to the cut-in time point and the fracture time point and the antique sword speed; calculating the cutting-in work and the breaking work based on the stress of the antique sword and the material cutting process along with the change of time and the cutting depth during cutting and breaking; calculating the sharpness of the antique sword according to the cutting depth and the cutting work of the antique sword and the antique sword during cutting and breaking; the method provided by the invention can ensure that the cutting angle of the cut material and the designated position of the sword is stable, realize quasi-static cutting, eliminate the damage of impact stress to the cutting edge of the antique sword, reduce the damage of the test process to the antique sword, and perform fine monitoring in the material cutting process, acquire each physical quantity in the cutting process and perform more accurate analysis on the sharpness.
The invention provides an antique sword sharpness testing device, wherein an antique sword feeding mechanism is realized by controlling transmission of a lead screw through a stepping motor, a dynamometer mounting seat is fixed with a sliding block of the lead screw, an antique sword clamping device is connected with the dynamometer mounting seat through a guide pillar, and the antique sword is manually adjusted and connected with the antique sword clamping device, so that the blade of a tested part of the antique sword is perpendicular to the plane of a test bench and is orthogonally cut with a cut material, and the damage of impact stress to the blade of the antique sword is eliminated.
The invention provides a device for testing sharpness of an antique sword, wherein a material height adjusting device is realized through transmission of a control rod of a stepping motor, two sides of a material fixing device are fixed with a moving block of the control rod through bolts, a cut material is symmetrically placed on the material fixing device along the central line of the material height adjusting device, a material pressing sheet is placed on the cut material and is fixedly connected with the material fixing device through bolts, the cut material can be ensured to be vertical to a blade at the position where the antique sword is fixed, the material pressing sheet and the cut material except the pressing sheet are completely fixed in the cutting process, only the material at the middle position is influenced by cutting force to generate deformation, and a foundation is provided for accurate sharpness analysis.
The method provided by the invention is simple and convenient, only a workpiece and an antique sword need to be clamped in a single operation, and the testing position of the knife edge is accurately controlled through the screw rod; the acquired data is accurate, and zero alignment is acquired by contrasting the high-speed camera with the dynamometer; the parameters are obtained in various ways, a plurality of evaluation parameters can be obtained by one-time cutting, and the contingency of single parameter judgment is reduced; the response speed is high, only the key frames of the entry points and the fracture points of the camera need to be judged manually, and the operation is completed through the assistance of a computer.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (9)
1. The method for testing the sharpness of the antique sword is characterized by comprising the following steps of:
driving the antique sword to cut the material at a constant speed, wherein the speed range is 2-10mm/min, the height of the cut material is equal to the cutting height of the antique sword, and the Shore hardness of the material is 40-70A;
recording an image of the antique sword-like knife and sword-like sword cut material along with time change by a high-speed camera;
recording the stress of the antique sword and knife cutting material process along with the change of time through a dynamometer;
acquiring a cut-in time point and a fracture time point based on an image of the time-varying process of cutting the material by the antique sword, and calculating the cutting depth during cutting and fracture according to the cut-in time point and the fracture time point and the antique sword speed;
calculating the cutting-in work and the breaking work based on the stress of the antique sword and the material cutting process along with the change of time and the cutting depth during cutting and breaking;
and calculating the sharpness of the antique knife and sword according to the cutting depth and the cutting work and the breaking work during the cutting and the breaking.
2. The method for testing the sharpness of the antique sword according to claim 1, wherein the cutting work and the breaking work are calculated based on the stress of the antique sword cutting material process changing along with time and the cutting depth during cutting and breaking, and specifically:
wherein d is 1 To the depth of cut at the time of incision, d 2 The cutting depth during the exercise is F is the stress of the antique sword and knife cutting material process changing along with the time, W 1 For the cutting work, W 2 The work of fracture.
3. The method for testing the sharpness of the antique sword according to claim 2, wherein the sharpness of the antique sword is calculated according to the cutting depth at the time of cutting and at the time of breaking, the cutting work and the breaking work, and specifically comprises the following steps:
S＝Index 1 *Index 2
therein, Index 1 Non-dimensional parameter, Index, representing sharpness-based characterization of the incision 2 And a dimensionless parameter representing sharpness based on fracture is shown, t is the thickness of a cut workpiece, K is fracture toughness of a cut material, and S is the sharpness of the antique sword.
4. An antique sword sharpness testing apparatus using the method of any one of claims 1 to 3, comprising: the device comprises an antique sword and knife feeding mechanism, an antique sword and knife clamping device, a material height adjusting device, a material fixing device, a laser tool setting device, a dynamometer and a high-speed camera;
archaize sword clamping device sets up on archaize sword feed mechanism, archaize sword feed mechanism drive archaize sword low-speed motion, archaize sword clamping device is on archaize sword feed mechanism's slider, material fixing device sets up on material height adjusting device's movable block, material height adjusting device drive adjusts the relative height of archaize sword and cutting material, laser tool setting device is fixed in archaize sword feed mechanism central line top, the dynamometer is installed between archaize sword feed mechanism slider and archaize sword clamping device, the high-speed camera is installed at material height adjusting device tip and perpendicular to cutting plane, the dynamometer is connected with high-speed camera signal and computer, feed mechanism, laser tool setting device, dynamometer and the independent power supply of high-speed camera.
5. The device for testing the sharpness of the antique sword according to claim 4, wherein the antique sword feeding mechanism is realized by controlling a screw rod transmission through a stepping motor, the dynamometer mounting seat is fixed with a slide block of the screw rod, the antique sword clamping device is connected with the dynamometer mounting seat through a guide column, and the antique sword is manually and adjustably connected with the antique sword clamping device.
6. The device for testing sharpness of an antique sword according to claim 4, wherein the material height adjusting device is realized by transmission of a control rod of a stepping motor, two sides of the material fixing device are fixed with a moving block of the control rod through bolts, the cut material is symmetrically placed on the material fixing device along a center line of the material height adjusting device, and the material pressing sheet is placed on the cut material and fixedly connected with the material fixing device through bolts.
7. The device for testing the sharpness of an antique sword and knife according to claim 4, wherein the sliding block of the antique sword and knife feeding mechanism and the clamping device move linearly together, the movement range of the sliding block is 100 mm and 300 mm, the movement precision is not more than 0.02 mm, and the movement speed is not more than 10mm per minute.
8. The device for testing the sharpness of an antique sword according to claim 4, wherein a moving block of the material height adjusting device and the material fixing device move linearly together, and the moving block moves with the precision not greater than 0.05 mm.
9. The device for testing the sharpness of an antique sword according to claim 4, wherein the thickness of the material to be cut is between 2 mm and 10mm, the length of the material is between 50 mm and 100 mm, and the width of the material is between 25 mm and 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464125.4A CN114965136B (en) | 2022-04-29 | 2022-04-29 | Archaize knife and sword sharpness testing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464125.4A CN114965136B (en) | 2022-04-29 | 2022-04-29 | Archaize knife and sword sharpness testing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114965136A true CN114965136A (en) | 2022-08-30 |
| CN114965136B CN114965136B (en) | 2024-10-22 |
Family
ID=82979178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210464125.4A Active CN114965136B (en) | 2022-04-29 | 2022-04-29 | Archaize knife and sword sharpness testing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114965136B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090503A (en) * | 2024-04-29 | 2024-05-28 | 攀枝花市中西医结合医院 | Method and device for detecting sharpness of scissors |
| CN118518519A (en) * | 2024-06-24 | 2024-08-20 | 广东研基精密五金有限公司 | Circular blade sharpness detection equipment, method, device and medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088502A2 (en) * | 2000-05-15 | 2001-11-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. | Method and device for determining at least one mechanical fracturing material parameter |
| EP1219949A2 (en) * | 2000-12-27 | 2002-07-03 | Daipla Wintes Co., Ltd. | Method and apparatus for layered structure breaking strength estimation |
| CN111230592A (en) * | 2020-02-16 | 2020-06-05 | 中国工程物理研究院机械制造工艺研究所 | Precision cutting micro-nano mechanical test experiment platform and method |
-
2022
- 2022-04-29 CN CN202210464125.4A patent/CN114965136B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088502A2 (en) * | 2000-05-15 | 2001-11-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. | Method and device for determining at least one mechanical fracturing material parameter |
| EP1219949A2 (en) * | 2000-12-27 | 2002-07-03 | Daipla Wintes Co., Ltd. | Method and apparatus for layered structure breaking strength estimation |
| CN111230592A (en) * | 2020-02-16 | 2020-06-05 | 中国工程物理研究院机械制造工艺研究所 | Precision cutting micro-nano mechanical test experiment platform and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090503A (en) * | 2024-04-29 | 2024-05-28 | 攀枝花市中西医结合医院 | Method and device for detecting sharpness of scissors |
| CN118090503B (en) * | 2024-04-29 | 2024-07-09 | 攀枝花市中西医结合医院 | Method and device for detecting sharpness of scissors |
| CN118518519A (en) * | 2024-06-24 | 2024-08-20 | 广东研基精密五金有限公司 | Circular blade sharpness detection equipment, method, device and medium |
| CN118518519B (en) * | 2024-06-24 | 2025-04-08 | 广东研基精密五金有限公司 | Circular blade sharpness detection equipment, method, device and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114965136B (en) | 2024-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114965136A (en) | Method and device for testing sharpness of antique sword | |
| CN108943451B (en) | Semiconductor-grade monocrystalline silicon crystal bar orientation test system | |
| CN108426783B (en) | Micro-shear test device | |
| US5007204A (en) | Apparatus for shaping ingots into right circular cylindrical form | |
| CN209815959U (en) | Substrate glass cutting device | |
| CN113735429B (en) | Glass scribing and cutting device and cutting method thereof | |
| CN210551691U (en) | Adjusting and quantifying mechanism for upper tool rest for slitting of pole piece of power battery | |
| CN114942200A (en) | Method for analyzing sharpness of straight-edged tool for ultrasonic machining of honeycomb material | |
| CN114076560A (en) | Shaft hole detection device of gearbox shifting fork shaft | |
| CN113484155A (en) | Ultrathin film mechanical property measuring device and method | |
| CN202255331U (en) | Automobile air-conditioning clutch coupler jumping automatic tester | |
| CN212122609U (en) | Tool setting gauge outside numerical control machining center machine | |
| CN211977875U (en) | Material rod fixing jig and detection device | |
| CN112229794B (en) | Device for measuring bonding strength of laser cladding repair layer | |
| CN106077792B (en) | A kind of cutter for automatically adjusting cutter location | |
| CN215727469U (en) | Variable-depth ruling device for critical shear thickness determination of engineering ceramics | |
| CN115609470A (en) | Grinding tool clamping device, shaft end spherical grinding equipment and shaft end spherical machining method | |
| CN116329624A (en) | Device and method for machining end face of sheet type standard joint | |
| CN212240284U (en) | Material measuring device and fixed-length processing device | |
| CN208991979U (en) | Cutting precision detection system of laser cutting machine | |
| CN101508046A (en) | Complicate electrode pose pre-adjustment device | |
| CN220650356U (en) | Carbide tool check out test set | |
| JP5851145B2 (en) | Sapphire single crystal ingot coring device | |
| CN110608932B (en) | Steel bar distance marking device and distance marking method | |
| CN218476685U (en) | Scribing device and scribing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |