CN216883710U

CN216883710U - Cutter for micro-assembly process

Info

Publication number: CN216883710U
Application number: CN202120928057.3U
Authority: CN
Inventors: 闫牡丹; 李荣明; 朱斌
Original assignee: Nanjing Rflight Communication Electronic Corp
Current assignee: Nanjing Rflight Communication Electronic Corp
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-07-05
Anticipated expiration: 2031-04-30

Abstract

The utility model provides a cutter for a micro-assembly process, belonging to the technical field of micro-assembly auxiliary tools. The cutter for the micro-assembly process can replace the cutter head at any time according to the actual condition, can be used in a plurality of procedures of the micro-assembly process and can be operated under a microscope, is simple and flexible to use and convenient to carry, reduces the difficulty of process operation, and improves the assembly efficiency and the accuracy.

Description

Cutter for micro-assembly process

Technical Field

The utility model belongs to the technical field of micro-assembly auxiliary tools, and particularly relates to a cutter for a micro-assembly process.

Background

At present, with the development of microwave technology, the precision requirement of the micro-assembly process is higher and higher, and especially in some special procedures and key procedures, the operation difficulty is higher and the micro-assembly process needs to be operated under a microscope. The micro-assembly work is done under a microscope, so it is a remarkable feature that it is "small". Although the 'small' operation is required to achieve very high 'precision', the process loss caused by improper tools is avoided being reduced, the assembly efficiency is improved, and the process operation difficulty is simplified. Eutectic processes in special processes and gold wire bonding processes in key processes in the micro-assembly process have high requirements on the gold plating layer, and operators need to pay attention to the protection of the gold plating layer in the operation process. The components used in the micro-assembly are sensitive and fragile, so that an appropriate tool is important in the micro-assembly process during operation.

In view of the above problems, there is a need for a cutting tool for micro-assembly process, which has a reasonable design and can effectively improve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve one technical problem in the prior art and provides a cutter for a micro-assembly process.

The utility model provides a cutter for a micro-assembly process, which comprises a cutter head, a cutter handle and a connecting rod, wherein the connecting rod is detachably connected with the cutter head and the cutter handle respectively, the cutter head is in a preset shape, and the preset shape can scrape redundant coatings in a specific process of the micro-assembly process.

Optionally, the connecting rod is a threaded connecting rod, the tool bit faces one end of the tool holder and is provided with an external thread, the tool holder faces one end of the tool bit and is provided with an internal thread, and the threaded connecting rod is spirally arranged in the external thread and the internal thread.

Optionally, the cutter head is integrally formed with the connecting rod.

Optionally, the preset shape includes a flat shape or a sickle shape.

Optionally, the width range of the flat cutter head is 0.3 mm-2.0 mm, and the thickness range of the flat cutter head is 0.15 mm-0.5 mm.

Optionally, the width range of the sickle-shaped tool bit is 0.3 mm-0.8 mm, the thickness range of the sickle-shaped tool bit is 0.15 mm-0.22 mm, the width range of the knife tip of the sickle-shaped tool bit is 0.05 mm-0.15 mm, and the included angle range of the tool bit of the sickle-shaped tool bit and the knife body is 85-90 degrees.

Optionally, the length range of the blade body of the cutter head is 13 mm-25 mm.

Optionally, the length range of the knife handle is 59-64 mm, and the diameter range of the knife handle is 6-8 mm.

Optionally, the tool holder is of a cylindrical structure.

Optionally, the tool bit is made of a quenched white steel material, and the tool shank is made of a brass material.

The cutter for the micro-assembly process comprises a cutter head, a cutter handle and a connecting rod, wherein the connecting rod is detachably connected with the cutter head and the cutter handle respectively, the cutter head is in a preset shape, and the preset shape can scrape redundant coatings in a specific process of the micro-assembly process.

Drawings

FIG. 1 is a schematic view of a tool for micro-assembly process according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a tool for a microfabrication process according to another embodiment of the present invention;

FIG. 3 is a schematic view of a flat tool tip according to another embodiment of the utility model;

FIG. 4 is a schematic view of a sickle-shaped cutting head according to another embodiment of the present invention;

FIG. 5 is a schematic view of a tool shank structure of a tool for micro-assembly process according to another embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the present invention provides a tool 100 for a micro assembly process, including a tool bit 110, a tool shank 120, and a connecting rod 130, wherein the connecting rod 130 is detachably connected to the tool bit 110 and the tool shank 120, respectively, and the tool bit 110 has a predetermined shape capable of scraping off an excessive coating in a specific process of the micro assembly process.

Specifically, when the cutting head 110 and the tool shank 120 are connected together through the connecting rod 130, the cutting head 110 with different preset shapes can be replaced according to different process requirements.

Illustratively, as shown in fig. 1, 2, 3, 4, and 5, the connecting rod 130 is a threaded connecting rod, the end of the tool bit 110 facing the tool bit 120 is provided with an external thread 111, the end of the tool bit 120 facing the tool bit 110 is provided with an internal thread 121, and the threaded connecting rod is screwed in the external thread 111 and the internal thread 121. Further preferably, as shown in fig. 3 and 4, the cutting head 110 and the connecting rod 130 are integrally formed, so that the cutting head 110 with the connecting rod 130 and the tool holder 120 are connected once when in use, and the operation and the use are convenient.

Illustratively, as shown in fig. 3 and 4, the predetermined shape of the tool tip 110 includes a flat shape or a sickle shape, and the predetermined shape can scrape off an excessive coating in a specific process of the micro-assembly process.

It should be noted that the flat tool tip 112 is widely used in the micro-assembly process, and can be used in various processes. For example, in a bonding or sintering process in a micro-assembly process, a die hole or a chip hole is often blocked by a conductive paste or solder, and at this time, a flat blade 112 smaller than the die hole or the chip hole and an appropriate holder 120 are selected for mounting and use, and the flat blade 112 is used under a microscope to remove the excess conductive paste or solder little by little. In the gold wire bonding process, sometimes, for various reasons, the oxide layer on the gold plating layer on the surface of the bonding point on the microwave board needs to be removed before the gold wire bonding, in order to ensure the gold wire bonding to be firm, at this time, the flat tool bit 112 is selected, and the oxide layer on the surface of the microwave board is lightly scraped off under a microscope. It should be noted that the gold plating layer of the box body and the circuit board cannot be scratched in the removing process, otherwise, the operation of the next process is affected.

It should be further explained that the eutectic bonding process in the micro-assembly process is required to be higher, and the sickle-shaped tool bit 113 and the suitable tool shank 120 are selected for installation and use. Need first to ward off a layer soldering tin on corresponding position in the eutectic alloy piece process, after soldering tin reached the melting point and melts, the tin of soldering tin melts the back surface and can generate the glossiness that the one deck thin oxide layer leads to soldering tin not enough, and the colour that demonstrates is dark, and the oxidation layer with the surface that can select sickle-shaped tool bit 113 gently at this moment scrapes off, can use sickle-shaped tool bit 113 to reduce the tin volume when the tin volume is too much. It should be noted that the blade tip does not scratch the box, the carrier coating, the circuit board and the nearby components when scraping.

Illustratively, as shown in fig. 3, the width of the flat blade 112 ranges from 0.3mm to 2.0mm, and more preferably, the width of the flat blade 112 ranges from 0.3mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, and 2.0 mm. The thickness of the flat blade 112 is in the range of 0.15 to 0.5mm, and more preferably, the thickness of the flat blade 112 is 0.15mm, 0.22mm, or 0.5 mm.

Illustratively, as shown in FIG. 4, the width of the sickle-shaped cutting head 113 ranges from 0.3mm to 0.8mm, and more preferably, the width of the sickle-shaped cutting head 113 ranges from 0.3mm, 0.5mm and 0.8 mm. The thickness of the sickle-shaped cutting head 113 ranges from 0.15mm to 0.22mm, and more preferably, the thickness of the sickle-shaped cutting head 113 ranges from 0.15mm to 0.22 mm. The width of the cutting edge of the sickle-shaped cutting head 113 is 0.05mm to 0.15mm, and more preferably 0.1 mm. The included angle between the sickle-shaped tool head 113 and the knife body ranges from 85 degrees to 90 degrees, and the included angle between the sickle-shaped tool head 113 and the knife body is 90 degrees in the embodiment.

Illustratively, as shown in fig. 1 and 2, the blade length of the cutting head 110 ranges from 13mm to 25mm, and more preferably, the blade length of the cutting head 110 ranges from 13mm, 15mm and 25 mm. The tool bit 110 can clean the redundant materials inside the box body in the micro-assembly process; the oxide formed on the surface of the soldering tin can be scraped off during manual eutectic welding; the components that the designer needs to add during the commissioning process can be completed by the tool bit 110.

Illustratively, as shown in fig. 1, 2 and 5, the length of the tool shank 120 ranges from 59mm to 64mm, and more preferably, the length of the tool shank 120 ranges from 59mm to 64 mm. The diameter of the shank 120 ranges from 6mm to 8mm, and more preferably, the diameter of the shank 120 ranges from 6mm to 8 mm. The handle 120 is cylindrical, so that the force and direction of the tool bit 110 can be well controlled when the tool bit is held by hand.

The tool bit 110 is preferably made of quenched white steel tool bit material, and the white steel processed through a series of processes such as quenching and tempering has good processing performance, good strength and toughness matching and good grindability. The preferred brass material that adopts of handle of a knife 120 is made, and corrosion resistance is strong, and intensity is suitable and easy machine-shaping. Of course, besides the above, those skilled in the art can also use other materials to make the cutting head 110 and the tool shank 120, which is not limited by the embodiment.

It should be noted that the cutting tool 100 can be used under a microscope, the use process is not influenced by the sight distance of the microscope, the cutting tool can be freely operated under the microscope according to the actual situation, and the stability of the cutting tool 100 is reliable in the operation process. When the tool 100 is operated under a microscope, if damage is found to the cutting head 110, it is immediately ground to the corresponding width and thickness as described above.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the utility model, and these modifications and improvements are also considered to be within the scope of the utility model.

Claims

1. The utility model provides a cutter for micro-assembly technology, its characterized in that, the cutter includes tool bit, handle of a knife and connecting rod, the connecting rod respectively with the tool bit with the handle of a knife can be dismantled and is connected, the tool bit has the shape of predetermineeing, predetermine the shape and can scrape unnecessary coating in the target process of micro-assembly technology.

2. The tool for the micro-assembly process according to claim 1, wherein the connecting rod is a threaded connecting rod, an external thread is arranged at one end of the tool bit facing the tool holder, an internal thread is arranged at one end of the tool holder facing the tool bit, and the threaded connecting rod is spirally arranged in the external thread and the internal thread.

3. The tool bit of claim 1 or 2, wherein the cutting head is integrally formed with the connecting rod.

4. The tool of claim 1, wherein the predetermined shape comprises a flat or a sickle shape.

5. The cutting tool for a microfabrication process according to claim 4, wherein the flat tip has a width ranging from 0.3mm to 2.0mm and a thickness ranging from 0.15mm to 0.5 mm.

6. The cutter for the micro-assembly process according to claim 4, wherein the width of the sickle-shaped cutter head ranges from 0.3mm to 0.8mm, the thickness of the sickle-shaped cutter head ranges from 0.15mm to 0.22mm, the width of the knife point of the sickle-shaped cutter head ranges from 0.05mm to 0.15mm, and the included angle between the sickle-shaped cutter head and the knife body ranges from 85 degrees to 90 degrees.

7. The tool for microfabrication process according to claim 1 or 2, wherein the blade length of the tool tip is in the range of 13mm to 25 mm.

8. The tool for the micro-assembly process according to claim 1 or 2, wherein the length of the tool shank ranges from 59mm to 64mm, and the diameter of the tool shank ranges from 6mm to 8 mm.

9. The tool of claim 1 or 2, wherein the shank is cylindrical in configuration.

10. The tool bit for the micro-assembly process according to claim 1 or 2, wherein the tool bit is made of a quenched white steel material, and the tool shank is made of a brass material.