Printed circuit board (PCB) tungsten steel milling cutter with protective layer

Abstract

The utility model discloses a PCB tungsten steel milling cutter with a protection layer, which comprises a cutter handle and a cutter head, the outer side of the cutter head is sleeved with a protection layer sleeve in a corrugated telescopic shape, the top end of the protection layer sleeve is connected with a fixed disc, the bottom end of the protection layer sleeve is connected with a movable disc, the fixed disc is fixed on the outer wall of the cutter handle, and the movable disc is fixed on the outer wall of the cutter handle. The edge of the outer ring of the fixed disc protrudes upwards to form a first outer protruding edge, the edge of the outer ring of the movable disc is connected with a second outer protruding edge, and the inner wall of the second outer protruding edge and the outer wall of the first outer protruding edge are provided with threads matched with each other in a screwed mode. According to the milling cutter disclosed by the utility model, the protective layer sleeve is arranged outside the cutter head of the milling cutter, so that when the milling cutter is clamped, the cutter head is effectively prevented from scratching hands of a user, and the cutter head can be enclosed, so that the problem that the cutter head is collided and abraded in the process of disassembling and assembling the milling cutter and mounting equipment is solved; and the outer convex edge II and the outer convex edge I can be screwed together to drive the protective layer sleeve to shrink, so that the tool bit can be conveniently exposed for processing and use.

Description

Technical Field

[0001] The utility model relates to the technical field of tungsten steel milling cutters, in particular to a PCB tungsten steel milling cutter with a protective layer. Background Art

[0002] Tungsten steel milling cutter is a tool made of tungsten steel. It is generally used in CNC machining centers and CNC engraving machines. It can also be installed on ordinary milling machines to process some relatively hard and uncomplicated heat-treated materials. Tungsten steel milling cutter is widely used and uses high-speed processing. When the tungsten steel milling cutter needs to work, the tungsten steel milling cutter body can be inserted into the installation equipment. At this time, the installation equipment pneumatically drives the tungsten steel milling cutter to rotate at high speed, and then the tungsten steel milling cutter can operate on the material on the surface of the machine tool.

[0003] The tungsten steel milling cutter currently used for PCB processing is a type of smaller milling cutter. Due to the small size of the milling cutter itself, its cutter head is ground more precisely and sharply. During daily clamping and fixing operations, after taking out the milling cutter, the user needs to pinch the cutter head before inserting the handle into the installation device. During operation, it is not only easy to cause the milling cutter head to bump and cause edge wear, but also easy to scratch the user's hands, posing certain safety hazards.

[0004] Therefore, we propose a PCB tungsten steel milling cutter with a protective layer to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a PCB tungsten steel milling cutter with a protective layer to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A PCB tungsten steel milling cutter with a protective layer comprises a tool handle and a tool head, wherein the outer side of the tool head is provided with a protective layer sleeve in a corrugated telescopic shape, the top end of the protective layer sleeve is connected to a fixed disk, and the bottom end of the protective layer sleeve is connected to a movable disk, the fixed disk is fixed to the outer wall of the tool handle, and the outer ring edge of the fixed disk bulges upward to form an outer convex edge 1, the outer ring edge of the movable disk is connected to an outer convex edge 2, and the inner wall of the outer convex edge 2 and the outer wall of the outer convex edge 1 are provided with threads that are matched and screwed together.

[0008] In a further embodiment, the material of the protective layer sleeve is one of stainless steel, plastic and rubber.

[0009] In a further embodiment, the movable disk is rotatably connected to the second outer protrusion via a bearing.

[0010] In a further embodiment, the outer casing of the protective layer casing is provided with a spring.

[0011] In a further embodiment, a through hole is formed on the surface of the fixed disk, and a limit rod is connected to the axis of the movable disk corresponding to the through hole, and the limit rod passes through the inside of the through hole.

[0012] In a further embodiment, the number of the perforations and the limiting rods is set to four groups, and the four groups of perforations and the limiting rods are symmetrically distributed about the axis center of the protective layer sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a protective layer cover on the outside of the cutter head of the milling cutter, so that when the user takes the milling cutter for clamping, the protective layer cover is isolated between the cutter head and the hand, which not only effectively prevents the cutter head from scratching the user's hand, but also can protect the cutter head through the protective layer cover, thereby preventing the cutter head from being knocked and worn during the process of assembling and disassembling the milling cutter with the installation equipment. In addition, the protective layer cover can be driven to shrink by screwing the second outer convex edge and the first outer convex edge together, thereby facilitating the exposing of the cutter head for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a semi-sectional structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the protective layer sleeve of the utility model when it is contracted.

[0018] In the figure: 1, knife handle; 2, knife head; 3, protective layer sleeve; 4, fixed plate; 41, outer convex edge 1; 42, perforation; 5, movable plate; 51, outer convex edge 2; 52, bearing; 6, spring; 7, limit rod. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 A PCB tungsten steel milling cutter with a protective layer comprises a handle 1 and a cutter head 2. The handle 1 and the cutter head 2 are both made of tungsten steel. A corrugated telescopic protective layer sleeve 3 is provided on the outer side of the cutter head 2. The material of the protective layer sleeve 3 is one of stainless steel, plastic and rubber. The protective layer sleeve 3 can be telescopic along the axis direction of the milling cutter. When the protective layer sleeve 3 is normally unfolded, its length is greater than that of the cutter head 2, so that the cutter head 2 is covered inside for protection. A fixing plate 4 is fixedly installed on the top of the protective layer sleeve 3. The inner circle of the fixing plate 4 is in contact with the cutter head. The outer wall of the handle 1 is welded and fixed, and the bottom end of the protective layer sleeve 3 is connected to the movable disk 5. The outer ring edge of the fixed disk 4 bulges upward to form an outer convex edge 1 41, and the outer ring edge of the movable disk 5 bulges upward to form an outer convex edge 2 51, and the inner wall of the outer convex edge 2 51 and the outer wall of the outer convex edge 1 41 are provided with threads that are matched and screwed together. The movable disk 5 is close to the fixed disk 4, thereby compressing the protective layer sleeve 3. When the outer convex edge 2 51 and the outer convex edge 1 41 are screwed together, the protective layer sleeve 3 is compressed between the movable disk 5 and the fixed disk 4, so that the cutter head 2 can be exposed.

[0023] See also Figure 2 Considering that the protective layer sleeve 3 may be twisted when the outer convex edge 51 is screwed with the outer convex edge 1 41, in order to prevent the protective layer sleeve 3 from twisting and damaging the cutter head 2, a movable disk 5 is rotatably connected to the outer convex edge 51 through a bearing 52. Therefore, when the outer convex edge 51 rotates, the movable disk 5 can be kept from rotating.

[0024] See also Figure 1-3In order to facilitate the automatic recovery of the length of the protective layer sleeve 3 after the outer convex edge 51 is separated from the outer convex edge 41, a spring 6 is provided on the outer sleeve of the protective layer sleeve 3. When the protective layer sleeve 3 is shortened, the spring 6 is compressed. Therefore, the elastic reaction force of the spring 6 can be used to drive the protective layer sleeve 3 to extend.

[0025] See also Figure 1-3 Considering that the protective layer sleeve 3 may bend during extension and retraction, and thus accidentally touch the cutter head 2, in order to further enhance the protection of the cutter head 2, a through hole 42 is provided on the surface of the fixed plate 4, and a limiting rod 7 is connected to the axial center line of the movable plate 5 corresponding to the through hole 42. The limiting rod 7 passes through the inside of the through hole 42, and then the protective layer sleeve 3 is limited by the sliding and retracting action of the limiting rod 7 relative to the through hole 42, so that it is not easy to bend.

[0026] See also Figure 1 and Figure 3 Furthermore, considering that when the material of the protective layer sleeve 3 is silicone and plastic, the protective layer sleeve 3 may be concave and deformed when in use, thereby touching the cutter head 2, therefore, four groups of perforations 42 and limit rods 7 are provided correspondingly, and the four groups of perforations 42 and limit rods 7 are symmetrically distributed about the axis center of the protective layer sleeve 3, so that the four limit rods 7 are located around the protective layer sleeve 3 to provide rigid protection, so that the protective layer sleeve 3 is not easily deformed.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PCB tungsten steel milling cutter with a protective layer, comprising a cutter handle (1) and a cutter head (2), characterized in that: The outer side of the cutter head (2) is provided with a protective layer sleeve (3) in a corrugated telescopic shape, the top end of the protective layer sleeve (3) is connected to a fixed disk (4), and the bottom end of the protective layer sleeve (3) is connected to a movable disk (5), the fixed disk (4) is fixed to the outer wall of the cutter handle (1), and the outer ring edge of the fixed disk (4) is raised upward to form an outer convex edge (41), the outer ring edge of the movable disk (5) is connected to an outer convex edge (51), and the inner wall of the outer convex edge (51) and the outer wall of the outer convex edge (41) are provided with threads that are matched and screwed together.

2. The PCB tungsten steel milling cutter with a protective layer according to claim 1, characterized in that: The material of the protective layer sleeve (3) is one of stainless steel, plastic and rubber.

3. The PCB tungsten steel milling cutter with a protective layer according to claim 1, characterized in that: The movable disk (5) is rotatably connected to the second outer convex edge (51) via a bearing (52).

4. The PCB tungsten steel milling cutter with a protective layer according to claim 1, characterized in that: The outer casing of the protective layer casing (3) is provided with a spring (6).

5. The PCB tungsten steel milling cutter with a protective layer according to claim 1, characterized in that: A through hole (42) is formed on the surface of the fixed disk (4), and a limit rod (7) is connected to the movable disk (5) at the axis center line corresponding to the through hole (42), and the limit rod (7) passes through the inside of the through hole (42).

6. The PCB tungsten steel milling cutter with a protective layer according to claim 5, characterized in that: The number of the through holes (42) and the limiting rods (7) is set to four groups, and the four groups of through holes (42) and the limiting rods (7) are symmetrically distributed about the axis centerline of the protective layer sleeve (3).

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