CN220445152U - Miniature milling cutter for printed circuit board - Google Patents

Abstract

The utility model discloses a miniature milling cutter for a printed circuit board, which comprises a cutter head and a cutter handle, wherein the tail end of the cutter head is integrally connected with a cutter seat, the cutter head penetrates through the inner bottom of the cutter handle, the cutter seat is clamped at the inner bottom of the cutter handle, a screw rod, a connecting rod and a pressing block are arranged in the cutter handle, and the screw rod is screwed with the cutter handle to control the pressing block to press or release the cutter seat through the connecting rod. According to the utility model, the connecting rod and the pressing block are driven by the rotating screw to compress the tool apron, so that the tool bit and the tool shank are connected and fixed, the tool bit and the tool shank are assembled conveniently and quickly, and the tool bit is convenient to split in the later period, so that when the milling cutter is worn, the tool bit is replaced without replacing the whole milling cutter, and the tool is beneficial to saving a certain use cost.

Description

Miniature milling cutter for printed circuit board

Technical Field

The utility model relates to the technical field of milling cutters, in particular to a miniature milling cutter for a printed circuit board.

Background

The printed circuit board is an indispensable element of an electronic product, and a milling cutter is a necessary cutting tool in the manufacturing process of the printed circuit board.

The existing milling cutter is shown in China patent with the application number of 202211450072.7, the cutter head and the cutter handle of the milling cutter are of an integrated structure, and the milling cutter and the printed circuit board are in a high-speed running and high-temperature friction environment, so that the cutting edge of the milling cutter, which is in contact with the printed circuit board, is easily worn, the working precision is reduced, the whole milling cutter is often required to be scrapped as a report waste product, and a new milling cutter is replaced and purchased again, so that the use cost is high.

For this purpose, we propose a micro milling cutter for printed circuit boards that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a miniature milling cutter for a printed circuit board, which solves the problems that the cutter head and the cutter handle of the conventional milling cutter provided in the background art need to be replaced integrally when damaged, and the use cost is high.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a miniature milling cutter that printed circuit board used, includes tool bit and handle of a knife, the tail end body coupling of tool bit has the blade holder, and the tool bit runs through the interior bottom of handle of a knife, and the blade holder card is in the bottom of handle of a knife, the inside of handle of a knife is equipped with screw rod, connecting rod and briquetting, and screw rod and handle of a knife screw thread connect soon to compress tightly or loosen the blade holder through connecting rod control briquetting.

In a further embodiment, a plurality of positioning rods are uniformly arranged at the inner bottom of the cutter handle, and penetrate through the through holes on the surface of the cutter seat.

In a further embodiment, a rubber jacket is further arranged at the inner bottom of the cutter handle, the rubber jacket is clamped between the inner bottom surface of the cutter handle and the cutter holder, and the positioning rod penetrates through the through hole on the surface of the rubber jacket.

In a further embodiment, the outer circumference of the rubber jacket bulges upwards to form a ring body, the inner ring of the ring body is tightly attached to the outer circumference of the tool holder, and the outer ring of the ring body is tightly attached to the inner wall of the tool holder.

In a further embodiment, the length of the shank is greater than the sum of the lengths of the screw, the connecting rod, the press block and the tool holder.

In a further embodiment, the tail end of the screw is provided with a cross groove.

In a further embodiment, the press block is in rotational connection with the connecting rod.

In a further embodiment, the outer circumference of the pressing block uniformly protrudes outwards to form a plurality of protruding portions, a groove portion is formed between every two adjacent protruding portions, the protruding portions and the groove portions are matched to form a petal-shaped structure, and the groove portions correspond to the positioning rods one by one.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the connecting rod and the pressing block are driven by the rotating screw to compress the tool apron, so that the tool bit and the tool shank are connected and fixed, the tool bit and the tool shank are assembled conveniently and quickly, and the tool bit is convenient to split in the later period, so that when the milling cutter is worn, the tool bit is replaced without replacing the whole milling cutter, and the tool is beneficial to saving a certain use cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the handle of the present utility model in a cut-away configuration;

FIG. 3 is a schematic view of an exploded view of the handle of the present utility model;

FIG. 4 is a schematic view of the rubber jacket structure of the present utility model;

FIG. 5 is a schematic diagram of the structure of the briquette according to the present utility model.

In the figure: 1. a cutter head; 11. a tool apron; 2. a knife handle; 21. a positioning rod; 3. a screw; 31. a cross groove; 4. a connecting rod; 5. briquetting; 6. a rubber jacket.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a miniature milling cutter for a printed circuit board comprises a cutter head 1 and a cutter handle 2, wherein the cutter handle 2 is hollow, the tail end of the cutter head 1 is integrally connected with a cutter holder 11, the cutter holder 11 and the cutter head 1 can be placed in from the tail end of the cutter handle 2 together, the cutter head 1 penetrates out from the inner bottom of the cutter handle 2, the cutter holder 11 is reserved at the inner bottom of the cutter handle 2, a screw rod 3, a connecting rod 4 and a pressing block 5 are arranged in the cutter handle 2, the screw rod 3, the connecting rod 4 and the pressing block 5 are sequentially arranged from top to bottom, the screw rod 3 is screwed with the cutter handle 2, and the pressing block 5 is controlled by the connecting rod 4 to press or loosen the cutter holder 11 when the screw rod 3 rotates, so that the cutter head 1 is fixed and detached.

Referring to fig. 2-3, in order to prevent the pressing block 5 from slipping between the tool holder 11 and the pressing block 5 and the tool shank 2 when the tool bit 1 rotates after the pressing block 11 is pressed, a plurality of positioning rods 21 are uniformly arranged at the inner bottom of the tool shank 2, and the positioning rods 21 penetrate through the through holes on the surface of the tool holder 11, so that the tool holder 11 can be limited and prevented from deflecting axially relative to the tool shank 2, and the tool shank 2 and the tool bit 1 can synchronously rotate.

Referring to fig. 2-3 and fig. 4, in order to enhance stability between the tool bit 1 and the tool holder 2 after being mounted, a rubber jacket 6 is further disposed at the inner bottom of the tool holder 2, the rubber jacket 6 is clamped between the inner bottom surface of the tool holder 2 and the tool holder 11, and the positioning rod 21 penetrates through a through hole on the surface of the rubber jacket 6, and simultaneously, the outer circumference of the rubber jacket 6 bulges upwards to form a ring body, the inner ring of the ring body is tightly attached to the outer circumference of the tool holder 11, and the outer ring of the ring body is tightly attached to the inner wall of the tool holder 2, so that the tool holder 11 is wrapped by the rubber jacket 6.

Referring to fig. 2, in order to improve stability after the whole milling cutter is assembled, the length of the cutter handle 2 is greater than the sum of the length of the screw rod 3, the connecting rod 4, the pressing block 5 and the cutter holder 11, so that when the screw rod 3 is screwed, the screw rod 3 retracts into the cutter handle 2, and the screw rod 3 cannot protrude out of the cutter handle 2, thereby preventing the problem that the cutter head 1 loosens due to the fact that the screw rod 3 is mistakenly touched in the use process, considering that the screw rod 3 retracts into the cutter handle 2, the inside of the screw rod 3 is not easy to control and rotate, the cross groove 31 is formed at the tail end of the screw rod 3, and when the screw rod 3 needs to be rotated, auxiliary tools such as a screwdriver are conveniently used.

Referring to fig. 2-3 and fig. 5, in order to reduce friction damage to the surface of the tool holder 11 caused by the pressing block 5 when contacting the tool holder 11, a rotary connection is provided between the pressing block 5 and the connecting rod 4, so that the screw 3 drives the connecting rod 4 to rotate relative to the pressing block 5 when rotating, the pressing block 5 does not rotate after contacting the tool holder 11, further friction damage is reduced, meanwhile, the outer circumference of the pressing block 5 uniformly protrudes outwards to form a plurality of protruding parts, a groove part is formed between every two adjacent protruding parts, the protruding parts and the groove part form a petal-shaped structure in a matched manner, the groove parts are in one-to-one correspondence with the positioning rods 21, the positioning rods 21 can be attached to the groove parts, the protruding parts limit the positioning rods 21, otherwise, the positioning rods 21 limit the pressing block 5, and the pressing block 5 are clamped between the positioning rods 21, so that the surface of the tool holder 11 is prevented from being damaged by rotary friction.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (8)

1. The utility model provides a miniature milling cutter that printed circuit board used, includes tool bit (1) and handle of a knife (2), its characterized in that: the utility model discloses a tool bit, including tool holder (11), tool bit (1), connecting rod (4) and briquetting (5), tool bit (1) tail end body coupling has tool holder (11), and tool holder (11) card is in the interior bottom of tool holder (2) in tool holder (2), the inside of tool holder (2) is equipped with screw rod (3), connecting rod (4) and briquetting (5), and screw rod (3) and tool holder (2) screw thread connect to compress tightly or loosen tool holder (11) through connecting rod (4) control briquetting (5).

2. A micro milling cutter for a printed circuit board according to claim 1, wherein: the inner bottom of the knife handle (2) is uniformly provided with a plurality of positioning rods (21), and the positioning rods (21) penetrate through the through holes on the surface of the knife holder (11).

3. A micro milling cutter for a printed circuit board according to claim 2, wherein: the inner bottom of the knife handle (2) is also provided with a rubber jacket (6), the rubber jacket (6) is clamped between the inner bottom surface of the knife handle (2) and the knife holder (11), and the positioning rod (21) penetrates through the perforation on the surface of the rubber jacket (6).

4. A micro milling cutter for a printed circuit board according to claim 3, wherein: the outer circumference of the rubber jacket (6) bulges upwards to form a ring body, the inner ring of the ring body is tightly attached to the outer circumference of the tool apron (11), and the outer ring of the ring body is tightly attached to the inner wall of the tool handle (2).

5. A micro milling cutter for a printed circuit board according to claim 1, wherein: the length of the knife handle (2) is larger than the sum of the lengths of the screw (3), the connecting rod (4), the pressing block (5) and the knife holder (11).

6. A micro milling cutter for a printed circuit board according to claim 1, wherein: the tail end of the screw rod (3) is provided with a cross groove (31).

7. A micro milling cutter for a printed circuit board according to claim 1, wherein: the pressing block (5) is rotationally connected with the connecting rod (4).

8. A micro milling cutter for a printed circuit board according to claim 2, wherein: the outer circumference of briquetting (5) evenly outwards protrudes and forms a plurality of bellying, and forms the recess portion between the adjacent bellying, bellying and recess portion cooperation form petal-shaped structure, and recess portion and locating lever (21) one-to-one.