CN111496900A - Flexible clamping device and method for providing uniform force and vibration cutting device - Google Patents
Flexible clamping device and method for providing uniform force and vibration cutting device Download PDFInfo
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- CN111496900A CN111496900A CN202010344598.1A CN202010344598A CN111496900A CN 111496900 A CN111496900 A CN 111496900A CN 202010344598 A CN202010344598 A CN 202010344598A CN 111496900 A CN111496900 A CN 111496900A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
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Abstract
The invention discloses a flexible clamping device and method for providing uniform force and a vibration cutting device, and belongs to the field of clamping of precision blades. The flexible clamping device includes at least one clamp assembly, each clamp assembly including a base plate, a top plate, and a pressure plate. The top plate is connected with the base plate through the first hinge portion to form a primary flexible mechanism, so that stress at one end of the top plate can be uniformly distributed along the direction of the central axis of the hinge portion and is further uniformly conducted to the other end of the top plate. And a contraction part and an expansion part are respectively formed at two sides of the first hinge part, and the pressing plate is arranged in the contraction part. The pressing plate is connected with the top plate through the second hinge portion to form a secondary flexible mechanism, so that a clamping portion is formed between the pressing plate and the substrate. Because the clamp plate is connected with the top plate through the secondary flexible mechanism, the clamp plate can have greater degree of freedom, so that uniform surface contact between the clamp plate and the blade is ensured, the clamping force on the blade can be further uniform, the blade is prevented from deforming due to clamping, and the stability of the cutting effect is ensured.
Description
Technical Field
The invention relates to the field of clamping of precision blades, in particular to a flexible clamping device and method for providing uniform force and a vibration cutting device.
Background
In modern biological research and medical examination, it is often necessary to make a thin section of biological tissue to a certain thickness using a cutting device for further processing and observation, such as staining, immunohistochemistry, imaging, etc. The vibration cutting device can drive the blade to vibrate in a reciprocating mode along the blade edge direction by using a certain driving force so as to tear the soft biological tissue, meanwhile, the blade or the cut tissue is fed along the direction perpendicular to the vibration direction, the slicing process is achieved, and the biological tissue is cut into thin slices of several micrometers to hundreds of micrometers. The clamping device is fixed on the vibration cutting device and used for fixing and clamping the blade to cut.
The existing clamping device is generally a clamping device based on a lever mechanism, a flexible or rigid lever mechanism is adopted, acting force is applied to one side of a lever, and the force is transmitted to the other side of the lever, namely the position where a blade is installed, through a supporting point, so that the clamping of the blade is completed. However, both have a common disadvantage in that the blade is stressed unevenly in the direction of extension of the lever, i.e., the distal end, which is distal from the fulcrum of the lever, is stressed more and the proximal end, which is proximal to the lever, is stressed less, because the amount of force exerted by the blade on the lever is related to the length from the fulcrum. This will cause the clamping device to make linear contact with the blade only at the distal end, which results in a large pressure being locally applied to the blade, which in turn will cause deformation of the blade and affect the cutting effect.
Disclosure of Invention
The embodiment of the invention provides a flexible clamping device and a method for providing uniform force and a vibration cutting device, which can enable the flexible clamping device to be in uniform surface contact with a blade, reduce the deformation of the blade and ensure the stability of the cutting effect.
According to a first aspect of embodiments of the present invention, a flexible clamping device for providing uniform force is provided, the device includes at least one clamp assembly, each clamp assembly includes a base plate, a top plate and a pressing plate, the top plate is connected to the base plate through a first hinge portion to form a primary flexible mechanism, a contraction portion and an expansion portion are respectively formed on two sides of the first hinge portion, the pressing plate is arranged in the contraction portion and connected to the top plate through a second hinge portion to form a secondary flexible mechanism, so that a clamping portion is formed between the pressing plate and the base plate.
Further, the mouth depth of the expanding portion is larger than the mouth depth of the contracting portion in a direction parallel to the top plate.
Further, in the clamping part, the pressing plate is parallel to the surface opposite to the substrate.
Furthermore, in the clamping part, a boss is arranged on the substrate, and a right angle is formed at the joint of the boss and the substrate.
Further, the base plate is gradually thickened in a direction from the contraction portion to the expansion portion.
Further, the clamp assembly is integrally formed, so that the first hinge portion is flexibly hinged with the top plate and the base plate, and the second hinge portion is flexibly hinged with the top plate and the pressing plate.
Furthermore, a through hole is formed in the position, corresponding to the expansion part, of the substrate.
Further, the flexible clamping device further comprises a power piece, and the power piece is matched with the through hole so that the contraction part is tightened while the expansion part is enlarged.
According to a second aspect of the embodiments of the present invention, there is provided a vibratory cutting apparatus including:
the cutting part comprises a vibrating mass, a blade and the flexible clamping device, the vibrating mass comprises a first side face and a second side face which are relatively parallel, a third side face and a fourth side face which connect the first side face and the second side face, and the blade is connected with the third side face through the flexible clamping device;
the driving part comprises a fixing part and a driving part, the driving part is connected with the fourth side face, the driving part is used for providing power for the cutting part to perform reciprocating linear vibration, and the vibration direction of the reciprocating linear vibration is parallel to the extending direction of the cutting edge of the blade; and the number of the first and second groups,
the guide part comprises a pair of guide blocks symmetrically connected to the first side surface and the second side surface, each guide block is provided with a double-parallelogram flexible mechanism, the pair of double-parallelogram flexible mechanisms and the middle cutting part are combined into a spring-mass system, the driving force frequency of the driving part is the same as the natural frequency of the spring-mass system, and the driving frequency is the vibration frequency of the driving part for driving the cutting part to perform reciprocating linear vibration;
every two parallelogram flexible mechanism include four flexible leaf springs, first connecting block and second connecting block, four the parallel symmetrical arrangement of flexible leaf spring, every the one end of flexible leaf spring with first connecting block links to each other, two symmetrical the other end of flexible leaf spring with vibrating mass block links to each other, two symmetrical other the other end of flexible leaf spring with the second connecting block links to each other, first connecting block with the clearance has between the second connecting block, the first end of second connecting block with the mounting of drive division is connected, first end is the second connecting block is kept away from the one end of flexible leaf spring.
Further, the flexible clamping device comprises two clamp assemblies which are arranged in parallel in the same direction, and clamping surfaces of the substrates of the two clamp assemblies are located in the same plane.
According to a third aspect of the embodiments of the present invention, there is provided a flexible clamping method for providing uniform force, which is applied to the above flexible clamping device or the above vibration cutting device, the method including:
s1: one end of the top plate is acted, so that the space of the expansion part is increased, the space of the contraction part is reduced, and the other end of the top plate drives the pressing plate to move;
s2: in the contact process of the pressing plate and the cutter, the secondary flexible mechanism deforms, so that the clamping surface is attached to the surface of the cutter.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
each clamp assembly includes a base plate, a top plate, and a pressure plate. The top plate is connected with the base plate through a first hinge portion to form a primary flexible mechanism, and a contraction portion and an expansion portion are formed on two sides of the first hinge portion respectively. The one-level flexible mechanism enables stress at one end of the top plate located at the expansion part to be uniformly distributed along the central axis of the hinge part and further uniformly conducted to one end of the top plate located at the contraction part. The pressing plate is arranged in the contraction part and is connected with the top plate through the second hinge part to form a secondary flexible mechanism, so that a clamping part is formed between the pressing plate and the substrate. Because the pressing plate is connected with the top plate through the secondary flexible mechanism, the pressing plate can have a certain degree of freedom, and uniform surface contact between the pressing plate and the blade is ensured. The clamping force on the blade can be further uniform through surface contact, the deformation of the blade caused by an unreasonable clamping mode is reduced, and the stability of the cutting effect is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible clamping device for providing uniform force according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a clamp assembly provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vibration cutting apparatus according to an embodiment of the present invention;
fig. 4 is a flowchart of a flexible clamping method for providing uniform force according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a flexible clamping device according to an embodiment of the present invention. As shown in fig. 1, the flexible clamping device includes at least one clamp assembly 10, each clamp assembly 10 including a base plate 11, a top plate 12, and a pressure plate 13. Fig. 2 is a cross-sectional view of a clamp assembly 10 according to an embodiment of the present invention, as shown in fig. 2, a top plate 12 is connected to a base plate 11 through a first hinge portion 14 to form a primary flexible mechanism, a contraction portion 10a and an expansion portion 10b are respectively formed on both sides of the first hinge portion 14, a pressing plate 13 is disposed in the contraction portion 10a, and connected to the top plate 12 through a second hinge portion 15 to form a secondary flexible mechanism, so that a clamping portion is formed between the pressing plate 13 and the base plate 11, and the surface of the pressing plate 13 opposite to the base plate 11 is used as a clamping surface to contact with the upper and lower side surfaces of a blade.
Wherein the first hinge portion 14 divides a space between the base plate 11 and the top plate 12 into a contracted portion 10a and an expanded portion 10 b. When the device is used, one end of the top plate 12 is far away from the base plate 11, the space of the expansion part 10b is increased, the other end of the top plate 12 is close to the base plate 11, and the space of the contraction part 10a is reduced.
The top plate 12 is connected to the base plate 11 via a first hinge portion 14 to form a primary flexible mechanism, and a contraction portion 10a and an expansion portion 10b are formed on both sides of the first hinge portion 14. The primary flexible mechanism enables the force of the top plate 12 at the end of the expansion portion 10b to be evenly distributed along the central axis of the hinge portion and further evenly transmitted to the end of the top plate 12 at the contraction portion 10 a. The pressing plate 13 is disposed in the contraction portion 10a, and the pressing plate 13 is connected to the top plate 12 via the second hinge portion 15 to form a secondary flexible mechanism, so that a clamping portion is formed between the pressing plate 13 and the substrate 11. Because the pressing plate 13 is connected with the top plate 12 through the secondary flexible mechanism, the pressing plate 13 can have a certain degree of freedom, thereby ensuring that the pressing plate 13 and the blade 120 form uniform surface contact. The surface contact can further uniform the clamping force on the insert 120, reduce the deformation of the insert 120 due to an unreasonable clamping manner, and ensure the stability of the cutting effect.
The second hinge portion 15 may be a flexible hinge, which may avoid the problem of non-uniform deformation caused by machining errors and assembly gaps, so that the clamping force is also uniformly distributed along the blade direction, thereby further reducing undesirable deformation of the blade.
Further, the substrate 11 is provided with a through hole 16 at a position corresponding to the expanded portion 10 b. The flexible clamping device further includes a power member which is engaged with the through-hole 16 to tighten the contraction part 10a while the expansion part 10b is enlarged, thereby providing a stable clamping force.
For example, the power member may be a set screw and the corresponding through hole 16 may be a threaded hole. The set screw is screwed into and fixed in the threaded hole, one end of the set screw abuts against the top plate 12, and the contraction portion 10a is tightened while the expansion portion 10b is enlarged as the set screw advances.
Preferably, the axial direction of the through hole 16 is perpendicular to the clamping surface of the base plate 11, so as to ensure that the clamping force applied by the set screw can be completely used for blade clamping, reduce the shaft drift phenomenon of the flexible hinge and improve the clamping precision.
Further, the mouth depth of the expanded portion 10b is larger than the mouth depth of the contracted portion 10a in the direction parallel to the top plate 12. The mouth depth is a distance from an opening end of the expanded portion 10b or the contracted portion 10a to the first hinge middle surface. The depth of the mouth of the expansion part 10b is greater than that of the contraction part 10a, so that the movement distance of the expansion part 10b can be increased, the minimum step for applying the clamping force can be reduced, and the magnitude of the clamping force can be controlled more accurately.
Preferably, the mouth depth of the expansion portion 10b may be set to between 6mm and 10mm and the mouth depth of the contraction portion 10a may be set to between 4mm and 6mm in consideration of structural rigidity and size of the blade 120.
Further, in the holding portion, the platen 13 is parallel to the surface facing the substrate 11. Since normally the upper and lower sides of the blade are parallel to each other. Therefore, the clamp 13 is parallel to the opposite surface of the substrate 11 in the clamp portion, and it is possible to facilitate clamping the blade 120 using the two opposite surfaces as the clamp surfaces.
Preferably, when the thickness of the clamped blade 120 is 0.5mm, the distance between the surfaces of the pressing plate 13 opposite to the base plate 11 is set to 0.55mm to facilitate the adjustment and clamping of the blade 120.
Further, in the clamping portion, the base plate 11 is provided with a boss 17, a right angle is formed at the joint of the boss 17 and the base plate 11, and two perpendicular surfaces of the right angle can be used for realizing the positioning of the blade 120, so that the blade edge is parallel to the vibration direction as much as possible.
Furthermore, the base plate 11 is gradually thickened along the direction from the contraction part 10a to the expansion part 10b, so that the sufficient thickness and strength of the threaded hole of the expansion part 10b are ensured, and the fixing effect of the set screw is improved; and the height of the cutting edge is always lower than that of the blade clamp, so that the sample is prevented from colliding with the blade clamp in the feeding process.
Further, the clamp assembly 10 is integrally formed such that the first hinge portion 14 is flexibly hinged to the top plate 12, the base plate 11, and the second hinge portion 15 is flexibly hinged to the top plate 12 and the pressing plate 13. The integrally formed and machined clamp assembly 10 can avoid assembly among parts and reduce errors caused by assembly.
Preferably, the clamp assembly 10 may be integrally formed from a flexible material. The flexible material is an elastic material with high ratio of yield strength to elastic modulus, and the ratio is 5500 or more; the elastic material includes a metal elastic material such as titanium alloy, beryllium bronze, or 7075 aluminum alloy, or a non-metal elastic material such as polypropylene, polysilicon, or the like. When the metal elastic material is used, the metal elastic material can be manufactured by wire cutting, so that the processing precision is ensured, and the consistency of the clamp assembly 10 can be further ensured.
Preferably, the first hinge portion 14 and the second hinge portion 15 can be both in a strip shape, the length of the first hinge portion 14, the length of the second hinge portion 15 and the width of the top plate 12 are the same, so that the clamping force provided by the set screw is uniformly distributed along the central axis of the hinge to the maximum extent, and the influence of the position error of the threaded hole on the clamping force is eliminated.
Taking a titanium alloy material as an example, according to the yield strength limit and compactness requirements of the material, the thickness t1 of the first hinge part 14 is 0.4mm, the height h1 of the first hinge part 14 is 1mm, and the length L of the first hinge part 14 is 6.5 mm.
The thickness t2 of second hinge 15 is 0.3mm, the height h2 of second hinge 15 is 0.4mm, and the length L of second hinge 15 is 6.5 mm.
The operation of the flexible clamping device is described in detail below, in which the blade 120 is placed in the clamping portion between the platen 13 and the substrate 11, and the back of the blade 120 completely fits the right-angled edge of the boss. The set screw passes through the threaded hole, and one end of the set screw butts against one end of the top plate 12, so that one end of the top plate 12 is far away from the base plate 11, the space of the expansion part 10b is increased, the other end of the top plate 12 is close to the base plate 11, and the space of the contraction part 10a is reduced. The pressing plate 13 is driven by the other end of the top plate 12 to approach the blade 120, and the end of the pressing plate 13 away from the second hinge portion 15 first contacts the blade 120, and then the second hinge portion 15 is deformed. At this time, the clamping of the insert 120 is changed from line contact to surface contact, and as the set screw further advances, the contact area between the pressing plate 13 and the insert 120 gradually increases until the pressing plate comes into full contact with the insert 120, thereby clamping the insert 120.
The top plate 12 is connected to the base plate 11 via a first hinge portion 14 to form a primary flexible mechanism, and a contraction portion 10a and an expansion portion 10b are formed on both sides of the first hinge portion 14. The primary flexible mechanism enables the force of the top plate 12 at the end of the expansion portion 10b to be evenly distributed along the central axis of the hinge portion and further evenly transmitted to the end of the top plate 12 at the contraction portion 10 a. The pressing plate 13 is disposed in the contraction portion 10a, and the pressing plate 13 is connected to the top plate 12 via the second hinge portion 15 to form a secondary flexible mechanism, so that a clamping portion is formed between the pressing plate 13 and the substrate 11. Because the pressing plate 13 is connected with the top plate 12 through the secondary flexible mechanism, the pressing plate 13 has a larger degree of freedom, thereby ensuring that the pressing plate 13 and the blade 120 form uniform surface contact. The surface contact can further even the clamping force on the blade 120, avoid the deformation of the blade 120 caused by clamping, and ensure the stability of the cutting effect.
Fig. 3 is a schematic structural diagram of a vibration cutting apparatus according to an embodiment of the present invention. As shown in fig. 3, the present invention provides a vibration cutting apparatus including a cutting part 100, a driving part 200, and a guide part 300.
The cutting portion 100 includes a vibrating mass 110, a blade 120 and, as before, a flexible clamping device 130, the vibrating mass 110 including first and second relatively parallel sides and third and fourth sides connecting the first and second sides, the blade 120 being connected to the third side by the flexible clamping device 130.
The vibration cutting device clamps the blade 120 by the flexible clamping device 130, the top plate 12 of the flexible clamping device 130 is connected with the base plate 11 by the first hinge portion 14 to form a one-stage flexible mechanism, and the contraction portion 10a and the expansion portion 10b are respectively formed on both sides of the first hinge portion 14. The primary flexible mechanism enables the force of the top plate 12 at the end of the expansion portion 10b to be evenly distributed along the central axis of the hinge portion and further evenly transmitted to the end of the top plate 12 at the contraction portion 10 a. The platen 13 is provided in the constricted portion 10 a. The pressing plate 13 is connected to the top plate 12 via a second hinge 15 to form a two-stage flexible mechanism, so that a clamping portion is formed between the pressing plate 13 and the substrate 11. Because the pressing plate 13 is connected with the top plate 12 through the secondary flexible mechanism, the pressing plate 13 has a larger degree of freedom, thereby ensuring that the pressing plate 13 and the blade 120 form uniform surface contact. The surface contact can further even the clamping force on the blade 120, avoid the deformation of the blade 120 caused by clamping, and ensure the stability of the cutting effect.
The driving part 200 includes a fixing member 210 and a driving member 220, the driving member 220 is connected to the fourth side of the vibration mass 110, and the driving member 220 is used for providing the cutting part 100 with a power for performing reciprocating linear vibration, the vibration direction of which is parallel to the extension direction of the blade 120. The guide part 300 includes a pair of guide blocks 310 symmetrically connected to the first and second side surfaces, each guide block 310 has a double-parallelogram flexible mechanism, the pair of double-parallelogram flexible mechanisms and the cutting part together form a spring-mass system, the driving frequency of the driving part 200 is the same as the natural frequency of the spring-mass system, and the driving frequency is the vibration frequency at which the driving part 220 drives the cutting part 100 to perform reciprocating linear vibration.
The driving member 220 of the driving part 200 acts on the vibration mass 110 to provide power for the cutting part 100 to perform reciprocating linear vibration. Since the vibrating mass 110 and the blade 120 as a whole undergo reciprocating linear vibration by the driving part 200, it is possible to ensure that the movement of the blade 120 is reciprocating linear movement. The guide part 300 includes a pair of guide blocks 310 symmetrically connected to the first and second side surfaces, each guide block 310 has a double parallelogram flexible mechanism, and the driving frequency of the driving part is the same as the natural frequency of the system, and can resonate with the vibration of the cutting part 100, thereby improving the vibration amplitude of the blade and further improving the cutting quality.
Each double-parallelogram flexible mechanism comprises four flexible plate springs 311, a first connecting block 312 and a second connecting block 313, the four flexible plate springs 311 are symmetrically arranged in parallel, one end of each flexible plate spring 311 is connected with the first connecting block 312, the other ends of two symmetrical flexible plate springs 311 are connected with the vibrating mass block 110, the other ends of the other two symmetrical flexible plate springs 311 are connected with the second connecting block 313, a gap is reserved between the first connecting block 312 and the second connecting block 313, a first end 313a of the second connecting block 313 is connected with the fixing part 210 of the driving part 200, and a first end 313a is one end of the second connecting block 313 far away from the flexible plate springs 311.
The pair of symmetrically arranged double parallelogram flexure mechanisms can eliminate the offset error of the non-vibration direction and provide a guide for the vibration of the cutting part 100 to reduce the parasitic motion error caused by the reciprocating linear motion, thereby realizing the high-precision reciprocating linear motion of the blade 120.
Referring to fig. 1, further, the flexible clamping device 130 includes two clamp assemblies 10 arranged in parallel in the same direction, and the clamping surfaces of the substrates 11 of the two clamp assemblies 10 are located in the same plane. The two clamp assemblies 10 are connected through a connecting part 131, the connecting part 131 is not contacted with the blade 120, and only the clamping surfaces on the pressure plate 13 and the base plate 11 of the two clamp assemblies 10 are contacted with the blade 120.
Compared with the prior art, the clamping effect is enhanced by using one clamp assembly 10 in a mode of increasing the length of the clamping surface, and the two clamp assemblies 10 arranged at intervals are arranged, so that the influence of machining errors in the length direction of the clamping surface on the blade 120 can be reduced, the linearity of the blade 120 is improved, and the deformation of the blade 120 is reduced.
Preferably, the two clamp assemblies 10 are integrally formed with the connecting portion 131. Since the integral molding requires no assembly, the consistency between the two jig assemblies 10 can be ensured.
Further, the flexible clamping device 130 further includes two mounting portions 132, a side surface of each mounting portion 132 is connected to a side of the clamp assembly 10 away from the connecting portion 131, a mounting hole 133 is formed in the mounting portion 132, and the flexible clamping device 130 is connected to the vibration mass 110 through the mounting hole 133.
Optionally, the axial direction of the mounting hole 133 is at an angle α with respect to the clamping surface of the base plate 11 of the clamp assembly 10, such that the blade 120 is at an angle with respect to the feeding direction of the vibration cutting device or sample, preferably, the angle α is 69 ° to 75 °, when the angle α is 69 ° to 75 °, the surface quality of the slice obtained by the vibration cutting device is better, and the size of the angle can be adjusted according to the sample to be cut.
Fig. 4 is a flowchart of a flexible clamping method for providing uniform force according to an embodiment of the present invention. As shown in fig. 4, the present invention provides a flexible clamping method for providing uniform force, which is applied to the flexible clamping device and the vibration cutting device, and the method includes:
s1: the one end of roof is acted on for expansion portion space increases, and contraction portion space reduces to drive the clamp plate motion through the other end of roof.
The press plate is driven through the lever motion of the primary flexible mechanism, so that a certain clamping force is provided for the cutter, and the basic clamping function is realized.
S2: in the contact process of the pressing plate and the cutter, the secondary flexible mechanism deforms, so that the clamping surface is attached to the surface of the cutter.
The pressure plate is connected with the top plate through a secondary flexible mechanism, so that an additional degree of freedom is obtained on the clamping surface, and the pressure plate can generate self-adaptive deformation at the angle of the surface of the clamped object after meeting resistance in the movement process; size design through second grade flexible mechanism makes the clamp plate obtain sufficient angle that opens and shuts to the clamp plate can laminate the blade completely, thereby guarantees to form even face contact between clamp plate and the blade, and then clamping-force on can the even blade, avoids the blade because the deformation that the centre gripping caused, guarantees the stability of cutting effect.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The flexible clamping device is characterized by comprising at least one clamp assembly (10), wherein each clamp assembly (10) comprises a base plate (11), a top plate (12) and a pressing plate (13), the top plate (12) is connected with the base plate (11) through a first hinge portion (14) to form a primary flexible mechanism, a contraction portion (10a) and an expansion portion (10b) are formed on two sides of the first hinge portion (14), the pressing plate (13) is arranged in the contraction portion (10a) and connected with the top plate (12) through a second hinge portion (15) to form a secondary flexible mechanism, and therefore a clamping portion is formed between the pressing plate (13) and the base plate (11).
2. Flexible clamping device according to claim 1, characterized in that the mouth depth of the flared portion (10b) is larger than the mouth depth of the constricted portion (10a) in a direction parallel to the top plate (12).
3. Flexible clamping device according to claim 1, characterized in that in the clamping section the pressure plate (13) is parallel to the opposite side of the substrate (11).
4. Flexible clamping device according to any of claims 1 to 3, characterized in that in the clamping portion, a boss (17) is provided on the base plate (11), and the boss (17) forms a right angle with the base plate (11).
5. Flexible clamping device according to any of claims 1 to 3, characterized in that the thickness of the substrate (11) increases gradually in the direction of the narrowing (10a) towards the widening (10 b).
6. Flexible clamping device according to any of claims 1 to 3, characterized in that the clamp assembly (10) is integrally formed such that the first hinge (14) and the top plate (12), base plate (11) and the second hinge (15) and the top plate (12), pressure plate (13) are flexibly hinged.
7. Flexible clamping device according to any of claims 1 to 3, characterized in that a through hole (16) is provided in the base plate (11) at a position corresponding to the flared portion (10b), and the flexible clamping device further comprises a power member (16), wherein the power member (16) cooperates with the through hole (16) to increase the flared portion (10b) while tightening the constricted portion (10 a).
8. A vibration cutting apparatus, characterized in that the vibration cutting apparatus comprises:
a cutting portion (100), the cutting portion (100) comprising a vibrating mass (110), a blade (120) and a flexible clamping device (130) according to any one of claims 1 to 7, the vibrating mass (110) comprising a first side and a second side which are relatively parallel and a third side and a fourth side connecting the first side and the second side, the blade (120) being connected to the third side by the flexible clamping device (130);
a driving part (200), wherein the driving part (200) comprises a fixing part (210) and a driving part (220), the driving part (220) is connected with the fourth side surface, the driving part (220) is used for providing power for the cutting part (100) to perform reciprocating linear vibration, and the vibration direction of the reciprocating linear vibration is parallel to the extension direction of the blade (120); and the number of the first and second groups,
a guide portion (300), the guide portion (300) comprising a pair of guide blocks (310) symmetrically connected to the first side surface and the second side surface, each guide block (310) having a double parallelogram flexure mechanism, the pair of double parallelogram flexure mechanisms being combined with the middle cutting portion (100) to form a spring-mass system, the driving force frequency of the driving portion (200) being the same as the natural frequency of the spring-mass system, the driving force frequency being the vibration frequency at which the driving member (220) drives the cutting portion (100) to perform reciprocating linear vibration;
each double-parallelogram flexible mechanism comprises four flexible plate springs (311), a first connecting block (312) and a second connecting block (313), the four flexible plate springs (311) are symmetrically arranged in parallel, one end of each flexible plate spring (311) is connected with the first connecting block (312), the other ends of two symmetrical flexible plate springs (311) are connected with the vibrating mass (110), and the other ends of the other two symmetrical flexible plate springs (311) are connected with the second connecting block (313), a gap is formed between the first connection block (312) and the second connection block (313), a first end (313a) of the second connecting block (313) is connected with a fixing member (210) of the driving part (200), the first end (313a) is the end of the second connecting block (313) far away from the flexible plate spring (311).
9. The vibratory cutting apparatus of claim 8, wherein the flexible clamping device (130) comprises two clamp assemblies (10) arranged in parallel in the same direction, the clamping surfaces of the base plates (11) of the two clamp assemblies (10) being located in the same plane.
10. A flexible clamping method for providing uniform force, which is applied to the flexible clamping device of any one of claims 1 to 7 or the vibration cutting device of claim 8 or 9, wherein the method comprises:
s1: one end of the top plate is acted, so that the space of the expansion part is increased, the space of the contraction part is reduced, and the other end of the top plate drives the pressing plate to move;
s2: in the contact process of the pressing plate and the cutter, the secondary flexible mechanism deforms, so that the clamping surface is attached to the surface of the cutter.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2811669A1 (en) * | 1978-03-17 | 1979-10-25 | Reich Maschf Gmbh Karl | PLANING HEAD WITH INTERCHANGEABLE REVERSIBLE KNIVES |
| CN2110535U (en) * | 1991-11-13 | 1992-07-22 | 何百里 | Top-pressed type clamp planing tool |
| CN201969938U (en) * | 2010-10-19 | 2011-09-14 | 王晓锋 | Cut-off tool of lever-type planing machine |
| CN204171430U (en) * | 2014-09-28 | 2015-02-25 | 天津市源仓机械制造有限公司 | A kind of movable knife bar of key-way tool |
| CN105033290A (en) * | 2015-07-14 | 2015-11-11 | 沈阳远大科技园有限公司 | Multipurpose vibration cutting tool |
| CN205032978U (en) * | 2015-10-21 | 2016-02-17 | 成都弘佛科技有限公司 | Stator vane tenon milling fixture |
| CN209878362U (en) * | 2019-03-19 | 2019-12-31 | 苏州杰悦五金机械有限公司 | Tool rest locking device |
| CN110732890A (en) * | 2019-10-15 | 2020-01-31 | 华中科技大学 | Blade clamping device and cutting angle-adjustable tool comprising same |
-
2020
- 2020-04-27 CN CN202010344598.1A patent/CN111496900B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2811669A1 (en) * | 1978-03-17 | 1979-10-25 | Reich Maschf Gmbh Karl | PLANING HEAD WITH INTERCHANGEABLE REVERSIBLE KNIVES |
| CN2110535U (en) * | 1991-11-13 | 1992-07-22 | 何百里 | Top-pressed type clamp planing tool |
| CN201969938U (en) * | 2010-10-19 | 2011-09-14 | 王晓锋 | Cut-off tool of lever-type planing machine |
| CN204171430U (en) * | 2014-09-28 | 2015-02-25 | 天津市源仓机械制造有限公司 | A kind of movable knife bar of key-way tool |
| CN105033290A (en) * | 2015-07-14 | 2015-11-11 | 沈阳远大科技园有限公司 | Multipurpose vibration cutting tool |
| CN205032978U (en) * | 2015-10-21 | 2016-02-17 | 成都弘佛科技有限公司 | Stator vane tenon milling fixture |
| CN209878362U (en) * | 2019-03-19 | 2019-12-31 | 苏州杰悦五金机械有限公司 | Tool rest locking device |
| CN110732890A (en) * | 2019-10-15 | 2020-01-31 | 华中科技大学 | Blade clamping device and cutting angle-adjustable tool comprising same |
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| CN111496900B (en) | 2021-06-25 |
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