Micro-blade end face grinding processing clamp

Abstract

The utility model provides a kind of micro blade end face grinding processing fixture, including the fixture base, blade placement platform and blade fixed piece of fixed connection in proper order, the blade does not need to use additional tool clamping when grinding processing, first using the adsorption of blade placement platform and the limiting effect of fixed groove makes blade positioning, the utility model ingenious place is can utilize grinding force to be processed blade positioning and clamping.Certain implementation mode is when grinding processing, on the basis of the structure of blade placement platform and blade fixed piece, the axial force of grinding wheel grinding makes blade adhere blade placement platform, the tangential force of grinding wheel makes blade adhere blade fixed piece, the axial force and tangential force of grinding are also the clamping force of blade when grinding.The fixture design is simple, cost is economical, shows stable and reliable performance in grinding processing process, significantly reduces production accident.The fixture also has the advantages of product switching convenient, strong adaptability, high product pass rate etc..

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and more specifically, to a fixture for grinding the end face of a micro-blade. Background Technology

[0002] In machining, micro-inserts are typically used in precision machining, micro-cutting, or high-precision engraving. Micro-inserts are characterized by their small size and high manufacturing precision requirements. Current technology for grinding the end faces of inserts generally employs a differential gear train double-sided grinder. When using single-sided groove positive angle inserts, multiple inserts are loaded onto a planetary carrier, and a cover plate is placed on top. The cover plate protects the non-grinding surfaces and also serves as a positioning datum during grinding. After the cover plate gear and the planetary carrier gear are aligned, they are pushed onto the grinding wheel of the machine tool. The machine tool's center pin teeth and ring teeth mesh with both the planetary carrier and the cover plate. The center ring gear drives the planetary carrier to rotate, achieving feed. Micro-motion of the upper grinding wheel prevents excessive relative speed between the cover plate and the upper grinding wheel. The end face of the insert protrudes from the planetary carrier and contacts the grinding wheel, while the lower grinding wheel has a higher relative speed with respect to the insert, thus achieving grinding. For example, patent application number 201410024406.3, entitled "Method for Grinding the Bottom Surface of a Square Shoulder Cutting Tool Using a Grinding Device," uses a differential gear train double-end face grinder for grinding, as shown in the appendix of this patent. Figure 1 As shown, multiple planetary disks are placed on the grinding machine. The bottom surface of the cutting insert protrudes from the planetary disk and contacts the grinding wheel for grinding. The grinding wheel has many evenly arranged oil holes for cooling and lubrication during grinding. Because the micro-cutting inserts are too small relative to the size of the oil holes, they are prone to jamming when moving relative to the grinding wheel due to the influence of the oil holes. The workpiece mounted on the planetary disk must be exposed to contact the grinding wheel for grinding. Therefore, the thickness of the planetary disk must be lower than the thickness of the workpiece. For example, the square cutting insert blank involved in this patent has a thickness of only 1.5 mm, and the thickness of the planetary disk must be less than 1.5 mm, while its diameter is 248 mm. The planetary disk has poor rigidity. Once the cutting insert gets stuck in the oil hole of the grinding wheel, it can lead to accidents such as planetary disk breakage, cutting insert collision, and damage to the cover plate and grinding wheel. Moreover, the frequency of such accidents is very high, making it unsuitable for mass production from an engineering perspective. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies, such as the frequent occurrence of accidents caused by the cutting tool getting stuck in the oil hole of the grinding wheel when grinding the end face of micro-blades using a differential gear double-sided grinder. It provides an economical, stable and reliable micro-blade end face grinding fixture.

[0004] A micro-blade end face grinding fixture includes a fixture base, a blade placement platform, and a blade fixing plate connected in sequence. The blade fixing plate has a fixing groove for accommodating the blade to be processed. The blade is placed in the fixing groove. The thickness of the blade fixing plate is less than the thickness of the blade, so that the blade surface to be processed protrudes outward from the fixing groove. An adsorption mechanism is installed in the blade placement platform to initially adsorb and fix the blade.

[0005] The micro-blade end face grinding fixture of this utility model has a fixture base for connecting with a universal fixture to facilitate angle adjustment during grinding. The blade is located in the fixing groove of the blade fixing plate, which limits the blade's position. The blade placement platform has an adsorption mechanism to adsorb and fix the blade, preventing it from falling during loading and unloading (i.e., initial positioning).

[0006] When the fixture grinds the cutting blade, no additional tools are needed for clamping. First, the blade is positioned by the suction force of the blade placement platform and the limiting effect of the fixing groove. The ingenious part of this utility model is that it can utilize the grinding force. During the grinding process, in addition to the structure of the blade placement platform and the blade fixing plate, the grinding force is added. The axial force of the grinding wheel makes the blade fit against the blade placement platform, and the tangential force of the grinding wheel makes the blade fit against the positioning plate. The axial force and tangential force of the grinding are also the positioning force and clamping force of the blade during grinding.

[0007] Universal clamps are multi-angle adjustable clamping tools widely used in machining, testing, welding, photography and other fields. They can flexibly fix workpieces or equipment and adapt to different angle requirements.

[0008] Furthermore, the fixing groove has an inner wall that matches the back angle of the blade. The back angle of the blade engages with the inner wall of the fixing groove, which has a "back angle", thus protecting the cutting edge of the blade from being damaged by the tangential force of the grinding wheel.

[0009] Furthermore, the blade fixing piece is square, and the fixing groove is an open groove located on the upper edge of the blade fixing piece, with the opening of the fixing groove facing upwards. In this utility model, the adsorption structure adsorbs the blade to prevent it from falling off during loading and unloading. During grinding, the axial force and tangential force of the grinding wheel position and clamp the blade. In addition, the grinding wheel also exerts a feed force on the blade during grinding. If the blade is installed on the left or right side of the square fixing piece, it will fall off under the action of the grinding wheel's feed force; if the blade is installed on the lower side of the square fixing piece, it will fly off under the action of the grinding wheel's tangential force, damaging the blade and creating a safety hazard. The fixing groove is located on the upper edge of the blade fixing piece, and the opening of the fixing groove faces upwards. When placing the blade, the blade is inserted from top to bottom, and when removing the blade, the blade is removed from bottom to top.

[0010] Furthermore, the upper edge of the blade fixing piece has one or more fixing grooves.

[0011] Furthermore, the adsorption mechanism is a powerful magnet. The powerful magnet attracts the blade to the blade placement platform, ensuring that the blade will not fall when loading or unloading.

[0012] Furthermore, the blade fixing plate is fixedly connected to the blade placement platform by adhesive.

[0013] Furthermore, the blade retaining plate is fixedly connected to the blade placement platform by a pin. This pin is used to support the tangential force on the blade retaining plate during grinding. Because the blade is a tiny blade, and the blade retaining plate is even thinner than the blade, fastening screws cannot be used.

[0014] Furthermore, the parallelism of the surface on the blade placement platform that is attracted to the blade is less than or equal to 0.01 mm.

[0015] Furthermore, the micro-insert end face grinding fixture is suitable for positive angle inserts. A positive angle insert refers to an insert with a cutting edge on only one side and a clearance angle.

[0016] Furthermore, the clamp base, the blade placement platform, and the blade fixing plate all have square cross-sections. The cross-sections of the clamp base and the blade placement platform coincide, and the cross-sectional area of ​​the blade fixing plate is smaller than that of the blade placement platform.

[0017] This utility model has the following beneficial effects:

[0018] This utility model discloses a micro-blade end-face grinding fixture, comprising a fixture base, a blade placement platform, and a blade fixing plate connected in sequence. During grinding, the blade does not require additional clamping tools. First, the blade is positioned using the suction force of the blade placement platform and the limiting effect of the fixing groove. The ingenious aspect of this utility model lies in utilizing grinding force. During grinding, in addition to the structure of the blade placement platform and the blade fixing plate, the grinding force is added. The axial force of the grinding wheel keeps the blade in contact with the blade placement platform, and the tangential force of the grinding wheel keeps the blade in contact with the blade fixing plate. The axial and tangential forces of the grinding wheel also serve as the positioning and clamping forces for the blade during grinding, ensuring smooth grinding. This utility model fixture effectively solves the problem in existing technologies where micro-blades easily get stuck in the oil hole of the grinding wheel in a differential gear train double-sided grinding machine during end-face grinding, leading to frequent production accidents. The fixture has a simple design, is economical, and exhibits stable and reliable performance during grinding, significantly reducing production accidents. Furthermore, this fixture also has advantages such as convenient product switching, strong adaptability, and a high product qualification rate. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of the fixture and grinding wheel structure for grinding the end face of micro-instruments;

[0021] Figure 2 This is a schematic diagram of the fixture base structure;

[0022] Figure 3 A schematic diagram of the blade placement platform;

[0023] Figure 4 This is a schematic diagram of the blade fixing plate in Example 1;

[0024] Figure 5 This is a schematic diagram of the blade fixing plate and blade in Example 1.

[0025] Figure 6 A magnified view of a portion of the blade fixing slot;

[0026] Figure 7 This is a schematic diagram of the blade fixing plate in Example 2.

[0027] The serial numbers are: 1-clamp base, 2-blade placement platform, 3-blade fixing plate, 4-blade, 5-fixing groove, 6-inner wall, 7-pin, 8-grinding wheel, 9-magnet. Detailed Implementation

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0032] Example 1

[0033] A fixture for grinding the end face of micro-blades, such as Figure 1 As shown, it includes a clamp base 1, a blade placement platform 2, and a blade fixing plate 3, which are fixedly connected in sequence. Figure 4 As shown, the blade fixing plate 3 has a fixing groove 5 for accommodating the blade to be processed. The blade 4 is placed in the fixing groove 5. In this embodiment, the blade 4 used is a square blade, and the fixing groove 5 is also a matching square. The thickness of the blade fixing plate 2 is less than the thickness of the blade 4, causing the surface of the blade to be processed to protrude outward from the fixing groove 5. A strong magnet 9 is installed in the blade placement platform 2 to initially attract and fix the blade 4. The attraction of the strong magnet 9 and the fixing groove 5 provide initial positioning for the blade 4. During the grinding process of the blade 4, the axial force of the grinding wheel 8 causes the blade 4 to adhere to the blade placement platform 2, and the tangential force of the grinding wheel 8 causes the blade 4 to adhere to the blade fixing plate 3. The axial force and tangential force of the grinding also serve as the positioning force and clamping force of the blade 4 during grinding, ensuring the smooth progress of the blade grinding.

[0034] like Figure 1As shown, the clamp base 1, the blade placement platform 2, and the blade fixing plate 3 all have square cross-sections. The cross-sections of the clamp base 1 and the blade placement platform 2 overlap, and the cross-sectional area of ​​the blade fixing plate 3 is smaller than that of the blade placement platform 2. Figure 1 and Figure 4 As shown, the fixing groove 5 is an open groove located on the upper edge of the blade fixing piece 3, with the opening of the fixing groove 5 facing upwards. In this embodiment, the upper edge of the blade fixing piece 3 has a fixing groove 5. When installing the blade 4, the blade 4 is inserted from top to bottom, and when removing the blade 4 after grinding, the blade 4 is removed from bottom to top. The operation is simple, the processing efficiency is high, and the pass rate is high.

[0035] like Figure 6 As shown, the fixing groove 5 has an inner wall 6 that matches the back angle of the blade 4. The back angle of the blade 4 engages with the inner wall 6 of the fixing groove 5, which has a "back angle", protecting the cutting edge of the blade 4 from damage under the tangential force of the grinding wheel 8.

[0036] The blade fixing piece 3 is fixedly connected to the blade placement platform 2 by a pin 7. For example... Figure 4 and 5 As shown, the blade retainer 3 has three pin holes, which are used to support the tangential force on the blade retainer 3 during grinding.

[0037] The parallelism of the surface on the blade placement platform 2 that is attracted to the blade 4 is less than or equal to 0.01 mm.

[0038] In this embodiment, a strong magnet 9 is used to attract the blade 4, and a fixing groove 5 limits the blade 4 for initial positioning. During grinding, the blade placement platform 2 and the blade fixing plate 3 are parallel to the rotation plane of the grinding wheel 8. The feed direction during grinding is parallel to the surface of the blade 4 being machined. During grinding, the axial force of the grinding wheel clamps the blade 4 to the blade placement platform 2, and the tangential force of the rotating grinding wheel 8 causes the blade 4 to adhere to the positioning plate, ensuring stable grinding.

[0039] Example 2

[0040] A fixture for grinding the end face of micro-blades, such as Figure 1 As shown, the device includes a clamp base 1, a blade placement platform 2, and a blade fixing plate 3, which are sequentially fixedly connected. The blade fixing plate 3 has a fixing groove 5 for accommodating the blade 4 to be processed. The blade 4 is placed in the fixing groove 5. In this embodiment, the blade 4 used is a square blade, and the fixing groove 5 is also a matching square. The thickness of the blade fixing plate 2 is less than the thickness of the blade 4, causing the surface of the blade to be processed to protrude outward from the fixing groove 5. A strong magnet 9 is installed in the blade placement platform 2 to initially attract and fix the blade 4.

[0041] like Figure 1 As shown, the clamp base 1, the blade placement platform 2, and the blade fixing plate 3 all have square cross-sections. The cross-sections of the clamp base 1 and the blade placement platform 2 overlap, and the cross-sectional area of ​​the blade fixing plate 3 is smaller than that of the blade placement platform 2. Figure 7 As shown, the fixing groove 5 is an opening groove located on the upper edge of the blade fixing piece 3. The opening of the fixing groove 5 faces upward. In this embodiment, the upper edge of the blade fixing piece 3 has five fixing grooves 5 with upward openings.

[0042] like Figure 6 As shown, the fixing groove 5 has an inner wall 6 that is adapted to the rear corner of the blade 4.

[0043] The blade fixing plate 3 is fixedly connected to the blade placement platform 2 by a pin 7.

[0044] The parallelism of the surface on the blade placement platform 2 that is attracted to the blade 4 is less than or equal to 0.01 mm.

[0045] The difference between Embodiment 2 and Embodiment 1 is that the blade fixing plate 3 has five fixing grooves 5, which can process five blades 4 at the same time. The blade fixing plate 3 in Embodiment 1 has only one fixing groove 5, which is suitable for small batch production. When large batch production is required, multiple fixing grooves 5 with upward openings can be provided on the upper edge of the blade fixing plate 3.

[0046] Example 3

[0047] A fixture for grinding the end face of micro-blades, such as Figure 1 As shown, the device includes a fixture base 1, a blade placement platform 2, and a blade fixing plate 3, which are sequentially fixedly connected. The blade fixing plate 3 has a fixing groove 5 for accommodating the blade to be processed. The blade 4 is placed in the fixing groove 5. In this embodiment, the blade 4 used is a square blade, and the fixing groove 5 is also a matching square. The thickness of the blade fixing plate 2 is less than the thickness of the blade 4, causing the surface of the blade to be processed to protrude outward from the fixing groove 5. A strong magnet 9 is installed in the blade placement platform 2 to initially attract and fix the blade 4.

[0048] like Figure 1 As shown, the clamp base 1, the blade placement platform 2, and the blade fixing plate 3 all have square cross-sections. The cross-sections of the clamp base 1 and the blade placement platform 2 overlap, and the cross-sectional area of ​​the blade fixing plate 3 is smaller than that of the blade placement platform 2. Figure 4 As shown, the fixing groove 5 is an opening groove located on the upper edge of the blade fixing piece 3. The opening of the fixing groove 5 faces upward, and a fixing groove 5 is opened on the upper edge of the blade fixing piece 3.

[0049] like Figure 6As shown, the fixing groove 5 has an inner wall 6 that is adapted to the rear corner of the blade 4.

[0050] The blade fixing plate 3 is fixedly connected to the blade placement platform 2 by strong adhesive.

[0051] The parallelism of the surface on the blade placement platform 2 that is attracted to the blade 4 is less than or equal to 0.01 mm.

[0052] The difference between Example 3 and Example 1 is that the blade fixing piece 3 and the blade placement platform 2 are fixedly connected by glue.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the present utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of the present utility model.

Claims

1. A fixture for grinding the end face of a micro-blade, characterized in that, The device includes a clamp base, a blade placement platform, and a blade fixing plate that are fixedly connected in sequence. The blade fixing plate has a fixing groove for accommodating the blade to be processed. The blade is placed in the fixing groove. The thickness of the blade fixing plate is less than the thickness of the blade, so that the surface of the blade to be processed protrudes outward from the fixing groove. The blade placement platform is equipped with an adsorption mechanism to initially adsorb and fix the blade.

2. The micro-blade end face grinding fixture according to claim 1, characterized in that, The fixing groove has an inner wall that matches the back angle of the blade.

3. The micro-blade end face grinding fixture according to claim 1, characterized in that, The blade fixing piece is square, and the fixing groove is an open groove located on the upper edge of the blade fixing piece, with the opening of the fixing groove facing upward.

4. The micro-blade end face grinding fixture according to claim 3, characterized in that, The upper edge of the blade fixing piece has one or more fixing grooves.

5. The micro-blade end face grinding fixture according to claim 1, characterized in that, The adsorption mechanism is a powerful magnet.

6. The micro-blade end face grinding fixture according to claim 1, characterized in that, The blade fixing plate is fixedly connected to the blade placement platform with glue.

7. The micro-blade end face grinding fixture according to claim 1, characterized in that, The blade fixing plate is fixedly connected to the blade placement platform by a pin.

8. The micro-blade end face grinding fixture according to claim 1, characterized in that, The parallelism of the surface on the blade placement platform that is attracted to the blade is less than or equal to 0.01 mm.

9. The micro-blade end face grinding fixture according to claim 1, characterized in that, The micro-blade end face grinding fixture is suitable for positive angle blades.

10. The micro-blade end face grinding fixture according to claim 1, characterized in that, The clamp base, blade placement platform, and blade fixing plate all have square cross-sections. The cross-sections of the clamp base and the blade placement platform coincide, and the cross-sectional area of ​​the blade fixing plate is smaller than that of the blade placement platform.

Images