CN110732890B

CN110732890B - Blade clamping device and cutting angle-adjustable tool comprising same

Info

Publication number: CN110732890B
Application number: CN201910975778.7A
Authority: CN
Inventors: 袁菁; 骆清铭; 邓磊; 陈键伟; 龚辉
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2021-06-18
Anticipated expiration: 2039-10-15
Also published as: CN110732890A

Abstract

The invention discloses a blade clamping device and a cutter with an adjustable cutting angle, wherein the cutter comprises a clamp body and a fastener, the clamp body comprises a fixed base connected through a flexible hinge and a pressing plate capable of rotating around the flexible hinge, so that a blade mounting area and a fastening area are formed on two sides of the flexible hinge, a fastener mounting hole is formed in the fixed base of the fastening area, and one end of the fastener abuts against the pressing plate after passing through the fastener mounting hole, so that a blade is fixed in the blade mounting area, and the technical problem of inconvenience in blade mounting in the prior art is solved. The cutter with the adjustable cutting angle comprises a fixing frame and a blade clamping device, wherein an angle adjusting assembly and a cutter supporting rod are arranged on the fixing frame, the cutter supporting rod is connected with the angle adjusting assembly, and the technical problems that the cutting angle adjusting mode of the cutter is complex and the precision is low are solved.

Description

Blade clamping device and cutting angle-adjustable tool comprising same

Technical Field

The invention belongs to the field of clamps, and particularly relates to a blade clamping device and a cutter with an adjustable cutting angle, wherein the cutter comprises the device.

Background

In biological sample cutting, a blade clamping device is a device for positioning and clamping a cutting blade, and the existing mode for clamping the blade is generally composed of two or more discrete rigid parts, and the clamping of the blade is realized by combining parts such as screws and the like.

By adopting the clamping mode, firstly, the installation is inconvenient; secondly, the clamping force of the blade is not controllable, and point contact or line contact constraint is easily formed for a precision thin blade with poor rigidity or brittleness, so that larger pressure/pressure is generated on the blade, and the blade is easily damaged; meanwhile, the pressure/pressure intensity is unevenly distributed on the blade, so that the blade generates uncontrollable deformation on a non-cutting plane, a smooth cutting surface cannot be obtained in the cutting process, and the integrity of data acquisition in subsequent micro-optical imaging is influenced.

In addition, the current cutting angle of the cutter is complex in adjustment mode and low in precision.

Disclosure of Invention

The invention provides a blade clamping device and a cutter with an adjustable cutting angle, aiming at solving the technical problems of inconvenient blade installation and complex cutter cutting angle adjusting mode in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a blade clamping device, which includes a clamp body and a fastening element, wherein the clamp body includes a fixed base connected by a flexible hinge and a pressing plate rotatable around the flexible hinge, so as to form a blade mounting area and a fastening area on two sides of the flexible hinge, a fastening element mounting hole is formed on the fixed base of the fastening area, and one end of the fastening element, after passing through the fastening element mounting hole, abuts against the pressing plate, so that a blade is fixed in the blade mounting area.

In the blade holding device of the present invention, the pressing plate and the fixing base are respectively provided with a boss and a groove, so that a step is formed in the blade mounting region.

Preferably, a portion of the pressure plate from the boss in a direction away from the flexible hinge flexibly engages the blade.

Preferably, the thickness of the flexibly fitted portion of the pressure plate is gradually reduced.

Preferably, the clamp body is integrally formed.

According to another aspect of the invention, a cutting tool with an adjustable cutting angle is provided, which comprises a fixed frame and the above blade clamping device, wherein the fixed frame is provided with an angle adjusting assembly and a tool supporting rod, a clamp body in the blade clamping device is provided with a tool supporting rod mounting hole, the blade clamping device is fixed on the tool supporting rod through the tool supporting rod mounting hole, and the tool supporting rod is connected with the angle adjusting assembly.

Preferably, the angle adjusting assembly comprises a flexible connecting plate, a movable plate and a displacement adjusting piece, the flexible connecting plate comprises a first fixed plate and a second fixed plate which are connected through a flexible connecting point, one end of the cutter supporting rod is fixed on the second fixed plate, the other end of the cutter supporting rod is fixed on the movable plate, the displacement adjusting piece is movably arranged on the fixed frame, one end of the displacement adjusting piece is in contact with the movable plate, and the displacement adjusting piece drives the movable plate, the cutter supporting rod and the second fixed plate to rotate around the flexible connecting point when moving.

Preferably, the displacement adjusting part is a first nut, and the fixing frame is provided with a first screw hole matched with the first nut.

Preferably, the first fixed plate, the second fixed plate and the movable plate are all arranged on the fixed frame through the second nut, and two ends of the cutter supporting rod are respectively fixed on the second fixed plate and the movable plate through the third nut and the third fixed plate.

Generally speaking, compared with the prior art, the technical scheme of the invention has the advantages that the lever structure is formed by connecting the fixed base and the pressing plate through the flexible hinge, and the angle of the cutter is precisely adjusted through the angle adjusting component, so that the following beneficial effects can be achieved:

(1) the invention provides a blade clamping device which clamps a blade by adopting a lever principle and is convenient to mount the blade.

(2) The invention adopts the step formed by the boss of the pressure plate and the groove of the fixed base to limit the blade, thereby ensuring that the position of the blade is unchanged when the blade is replaced and realizing repeated positioning.

(3) The thickness of the flexible matched part of the pressure plate and the blade is gradually reduced to ensure that the clamping device is in surface contact with the blade, so that larger pressure/pressure can not be generated on the blade, and the service life of the blade is prolonged.

(4) The clamp body of the blade clamping device is integrally formed, so that no combination and assembly error exists, and the blade clamping device is compact in structure and convenient to install.

(5) The invention provides a cutter with an adjustable cutting angle, which comprises the blade clamping device, wherein the cutter comprises an angle adjusting assembly and a cutter supporting rod, so that the rolling angle and the pitching angle of the cutter can be accurately adjusted, and the angle adjusting assembly is simple in structure and easy to adjust.

Drawings

FIG. 1 is a schematic structural view of a blade holding device according to an embodiment of the present invention;

FIG. 2 is a perspective view of a blade holding device according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a cutting angle adjustable tool according to an embodiment of the present invention.

The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:

1-a clamp body; 2-a flexible hinge; 3-fixing the base; 4, pressing a plate; 5-a blade mounting area; 6-a fastening zone; 7-fastener mounting holes; 8-boss; 9-a groove; 10-a fixing frame; 11-a cutter bar; 12-a cutter support rod mounting hole; 13-a movable plate; 14-a displacement adjustment assembly; 15-flexible connection points; 16-fixing the plate I; 17-fixing a second plate; 18-nut two; 19-nut three; 20-fixing plate III.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides an insert clamping device, as shown in fig. 1, including a clamp body 1 and a fastener. The clamp body 1 comprises a fixed base 3 connected through a flexible hinge 2 and a pressing plate 4 capable of rotating around the flexible hinge 2, and the pressing plate 4 and the flexible hinge 2 form a lever structure together. The two sides of the flexible hinge 2 form a blade mounting area 5 and a fastening area 6, and a fastening piece mounting hole 7 is formed in the fixed base 3 of the fastening area 6. The fastener passes through the fastener mounting hole 7 with one end abutting against the press plate 4 to secure the blade in the blade mounting region 5. According to the lever principle, the pressing plate 4 clamps the blade in the blade mounting area 5, so that the blade is conveniently mounted. In this embodiment, the fasteners are screws. When in work: the blade mounting area 5 and the fastening area 6 form a lever structure through the flexible hinge 2, when the blade is clamped, the blade is placed in the blade mounting area 5 and abuts against the step, the screw penetrates through the fastener mounting hole 7 to generate outward thrust on the pressing plate 4 close to the fastening area 6, and according to the lever principle, the pressing plate 4 at the blade mounting area 5 generates pressure, so that the blade is tightly clamped.

In another embodiment, the pressing plate 4 is provided with a boss 8, the fixing base 3 is correspondingly provided with a groove 9, and the boss 8 and the groove 9 are matched in the blade mounting area 5 to form a step for limiting the blade so as to realize repeated positioning of the blade.

In another embodiment, the part of the pressure plate 4 in the direction from the boss 8 to the direction far away from the flexible hinge 2 is in flexible fit with the cutter, and the thickness of the flexible fit part in the pressure plate 4 is gradually reduced to ensure that the clamping device is in surface contact with the blade, so that large local pressure/pressure change cannot be generated on the blade, and the service life of the blade is prolonged.

In another this embodiment, anchor clamps body 1 is formed by monoblock material processing, and integrated into one piece does not have the combination assembly error, compact structure.

Example 2

The present embodiment provides a cutting angle adjustable tool, as shown in fig. 3, including the blade holding device and the fixing frame 10 of embodiment 1, wherein the fixing frame 10 includes an angle adjusting assembly and a tool supporting rod 11. As shown in fig. 1 and 2, a tool post mounting hole 12 is formed in a holder body 1 of the blade holding device, the blade holding device is fixed to a tool post 11 through the tool post mounting hole 12, and the tool post 11 is connected to an angle adjusting assembly. Through the structure, the rolling angle and the pitch angle of the cutter can be accurately adjusted.

As shown in fig. 3, the angle adjusting assembly includes a flexible connecting plate, a movable plate 13 and a displacement adjusting assembly 14, the flexible connecting plate includes a first fixed plate 16 and a second fixed plate 17 connected by a flexible connection point 15, one end of the cutter supporting rod 11 is fixed on the second fixed plate 17, the other end of the cutter supporting rod is fixed on the movable plate 13, the displacement adjusting assembly 14 is movably disposed on the fixed frame 10, and the other end of the displacement adjusting assembly is in contact with the movable plate 13, so that the movable plate 13, the cutter supporting rod 11 and the second fixed plate 17 are driven to rotate around the flexible connection point 15 when the. When the pitch angle is adjusted, the connection between the first fixed plate 16 and the fixed frame 10 is kept still, the connection between the second fixed plate 17 and the fixed frame 10 and the connection between the movable plate 13 and the fixed frame 10 are loosened, the end of the cutter supporting rod 11 close to the movable plate 13 is adjusted through the displacement adjusting assembly 14, and after the pitch angle is adjusted, the connection between the second fixed plate 17 and the fixed frame 10 and the connection between the movable plate 13 and the fixed frame 10 are tightened.

Wherein, the displacement adjusting component 14 is a first nut, and the fixing frame 10 is provided with a first screw hole matched with the first nut.

The first fixed plate 16, the second fixed plate 17 and the movable plate 13 are all arranged on the fixed frame 10 through the second nut 18; two ends of the cutter supporting rod 11 are fixed on the second fixed plate 17 and the movable plate 13 through the third nut 19 and the third fixed plate 20, respectively, that is, one end of the cutter supporting rod 11 is fixed on the second fixed plate 17 through the third nut 19 and the third fixed plate 20, and the other end is fixed on the movable plate 13 through the third nut 19 and the third fixed plate 20.

When the roll angle is adjusted: firstly loosening the third nut 19, rotating the cutter supporting rod 11, adjusting the blade to a required angle, and then screwing the third nut 19 to finish the adjustment of the rolling angle.

When adjusting the pitch angle: and screwing a second nut 18 between the first fixed plate 16 and the fixed frame 10, loosening the second nut 18 between the second fixed plate 17 and the fixed frame 10 and the second nut 18 between the movable plate 13 and the fixed frame 10, adjusting one end of the cutter supporting rod 11 close to the movable plate 13 through the first nut, adjusting the pitch angle, and then screwing the second nut 18 between the second fixed plate 17 and the fixed frame 10 and the second nut 18 between the movable plate 13 and the fixed frame 10 to finish the adjustment of the pitch angle.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A blade clamping device is characterized in that the blade clamping device is used for clamping a precision blade for flat-pushing cutting of a frozen or paraffin-embedded sample, and comprises a clamp body and a fastening piece, wherein the clamp body is integrally formed and comprises a fixed base and a pressing plate, the fixed base is connected with the pressing plate through a flexible hinge, the pressing plate can rotate around the flexible hinge, a blade mounting area and a fastening area are formed on two sides of the flexible hinge, a fastening piece mounting hole is formed in the fixed base of the fastening area, and one end of the fastening piece abuts against the pressing plate after passing through the fastening piece mounting hole, so that the blade is fixed in the blade mounting area;

the blade mounting structure is characterized in that a boss is arranged on the pressing plate, a groove is correspondingly arranged on the fixing base, a step is formed between the boss and the groove in the blade mounting area, the part of the pressing plate in the direction from the boss to the direction far away from the flexible hinge is in flexible fit with the blade, and the thickness of the part of the pressing plate in flexible fit is gradually reduced.

2. A cutting angle adjustable tool, comprising: the blade holding device according to claim 1, wherein the holder is provided with an angle adjustment assembly and a tool post, the holder body of the blade holding device is provided with a tool post mounting hole, the blade holding device is fixed to the tool post through the tool post mounting hole, and the tool post is connected to the angle adjustment assembly.

3. The cutting angle adjustable tool according to claim 2, wherein the angle adjustment assembly includes a flexible connecting plate, a movable plate, and a displacement adjustment member, the flexible connecting plate includes a first fixed plate and a second fixed plate connected by a flexible connection point, one end of the tool supporting rod is fixed to the second fixed plate, the other end of the tool supporting rod is fixed to the movable plate, and the displacement adjustment member is movably disposed on the fixed frame, and one end of the displacement adjustment member is in contact with the movable plate, so that the movable plate, the tool supporting rod, and the second fixed plate are driven to rotate around the flexible connection point when the displacement adjustment member moves.

4. The cutting angle adjustable tool according to claim 3, wherein the displacement adjusting member is a first nut, and the fixing frame is provided with a first screw hole which is matched with the first nut.

5. The cutting angle adjustable tool according to claim 3, wherein the first fixed plate, the second fixed plate and the movable plate are all disposed on the fixed frame through a second nut, and both ends of the tool supporting rod are respectively fixed on the second fixed plate and the movable plate through a third nut and a third fixed plate.