Spherical milling cutter protective sheath and spherical milling cutter

Abstract

The utility model provides a spherical milling cutter protective sheath and a spherical milling cutter, the spherical milling cutter protective sheath comprises a protective sheath and a spherical milling cutter matched with the protective sheath for use, the top end of an outer sheath is provided with a placing port, clamping plates are circumferentially arranged around the placing port, the clamping plates have elasticity and can draw close to the inner side of the outer sheath, and the inner walls of the clamping plates are provided with connectors; a buffering sleeve capable of wrapping the tool bit is installed at the bottom of the outer sheath, and the outer wall of the buffering sleeve is attached to the inner wall of the outer sheath. When the spherical milling cutter is used, the cutting edge is prevented from being damaged when the cutter head is seriously impacted through the sheath, so that the spherical milling cutter can be protected, and economic loss is avoided. The sheath and the knife handle can be quickly assembled and disassembled, and use convenience is improved. In addition, the spherical milling cutter can be quickly assembled and disassembled with the sheath, so that the matching property with the sheath is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a spherical milling cutter protective sheath and a spherical milling cutter. Background Art

[0002] Spherical milling cutters are mostly used on CNC machining centers. The cutting edge at the front end of the cutter head can mill curved surfaces or process inner chamfers. Since the cutting edge of the spherical milling cutter is in the shape of a continuous arc, the exposed range of the cutting edge is larger than that of an ordinary end mill, and the cutting edge of the spherical milling cutter is not easy to grind. Therefore, it is important to properly preserve the milling cutter when the tool is placed and stored to avoid damage to the tool cutting edge and damage caused by the tool falling. In view of this, a spherical milling cutter protective sheath and a spherical milling cutter are provided. Summary of the invention

[0003] The technical problem to be solved by the utility model is to solve the problem that the cutting edge of the existing spherical milling cutter is easily damaged by collision or falling.

[0004] A spherical milling cutter protective sheath is provided, comprising an outer sheath, a placement opening is arranged at the top end of the outer sheath, and clamping plates are arranged circumferentially around the placement opening, the clamping plates are elastic and can be moved closer to the inner side of the outer sheath, and a connector is arranged on the inner wall of the clamping plate; a buffer sleeve capable of wrapping the cutter head is installed at the bottom of the outer sheath, wherein the outer wall of the buffer sleeve is arranged to fit the inner wall of the outer sheath.

[0005] Preferably, the connector is hemispherical and protrudes from the inner wall of the card plate.

[0006] Preferably, a chamfer is provided on the inner edge of the top of the connector.

[0007] Preferably, anti-slip grooves are provided on the outside of the sheath.

[0008] Preferably, the buffer sleeve is made of rubber, fabric or EPS polystyrene material and is bonded to the inner wall of the outer sheath.

[0009] Preferably, a quadrilateral fixing sleeve is also sleeved on the outer wall of the outer sheath.

[0010] Preferably, the connector is a strip-shaped texture protruding from the inner wall of the card board.

[0011] A spherical milling cutter comprises a milling cutter body, a cutter head is arranged at the front end, a cutter handle is arranged at the rear end, at least one slot is opened on the outer wall of the cutter handle, and the connector can be matched and connected in the slot.

[0012] Preferably, there are two slots and they are symmetrically arranged relative to the axis of the handle.

[0013] The beneficial effect of the present invention is that the present invention is provided with an outer sheath that can be mounted on the outside of the spherical milling cutter and a buffer sleeve that can be wrapped around the cutter head and the blade is provided inside the outer sheath, and the buffer sleeve can prevent the cutting edge from being damaged when the cutter head is subjected to a severe impact, thereby protecting the spherical milling cutter and avoiding economic losses. In addition, the outer sheath and the handle can be quickly assembled and disassembled, thereby improving the convenience of use.

[0014] In addition, the utility model also provides a spherical milling cutter, which can mainly match the outer sheath and quickly load and unload it, thereby improving the compatibility with the outer sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the first structure of the spherical milling cutter protective sheath provided by the embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the second structure of the spherical milling cutter protective sheath provided by the embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure after the protective sheath and the milling cutter are installed;

[0019] Figure 4 yes Figure 3 Schematic diagram of the decomposition structure;

[0020] Figure 5 yes Figure 3 Schematic diagram of the main structure;

[0021] Figure 6 yes Figure 5 Schematic diagram of the full cross-section structure at AA;

[0022] In the figure: 1-outer sheath, 1.1-placing port, 1.2-clip plate, 1.21-connector, 1.22-chamfer, 1.3-anti-slip pattern, 2-buffer sleeve, 3-fixing sleeve, 4-milling cutter body, 4.1-clip slot. DETAILED DESCRIPTION

[0023] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention rather than to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0024] In a specific embodiment, a spherical milling cutter protective sheath is provided, which includes an outer sheath 1 that can be mounted on a position other than the milling cutter handle. In order to enable the spherical milling cutter to be loaded into the outer sheath 1, a placement port 1.1 is provided at the top of the outer sheath 1. In this example, in order to achieve the wrapping protection of the cutter head and the detachable fixation of the outer sheath 1 and the cutter body, a clamping plate 1.2 is arranged in a circle around the placement port 1.1. The clamping plate 1.2 has elasticity and can move closer to the inner side of the outer sheath 1. Therefore, after the milling cutter is inserted into the outer sheath 1, the clamping plate 1.2 can be clamped on the cutter handle by elasticity. After the clamping plate 1.2 is clamped, it can be firmly connected to the cutter handle and will not fall off easily. In addition, a connector 1.21 is provided on the inner wall of the clamping plate 1.2. The connector 1.21 is connected to the outer wall of the cutter handle. In this example, the connector 1.21 can be made of rubber material or a non-slip rubber layer is provided on the connector 1.21, thereby improving the convenience of disassembly of the outer sheath and the cutter body.

[0025] In this example, the outer sheath 1 can be made of plastic, rubber material or a plate with a thickness of less than 0.5 mm, which can reduce the weight of the outer sheath 1 and facilitate installation and use. In order to make the cutter head fixed on the inner wall of the outer sheath 1 and avoid the problem that only the thin-walled outer sheath 1 cannot protect the cutter head well when the cutter body is severely hit or dropped, a buffer sleeve 2 capable of wrapping the cutter head is installed at the bottom of the outer sheath 1. In this application, the buffer sleeve 2 is preferably made of rubber, fabric or EPS polystyrene and is bonded to the inner wall of the outer sheath 1. The outer wall of the buffer sleeve 2 is arranged in contact with the inner wall of the outer sheath 1. The deformation of the buffer sleeve 2 can effectively offset the impact force on the cutter head and protect the cutting edge of the tool.

[0026] In summary, this application specifically adopts two connector 1.21 structures:

[0027] First, the connector 1.21 is a strip texture protruding from the inner wall of the card plate 1.2, thereby increasing the friction between it and the handle through the strip texture. Similarly, an anti-slip layer can be coated on the strip texture.

[0028] The second type is that the connector 1.21 is hemispherical and protrudes from the inner wall of the card plate 1.2. For this purpose, the present application provides a spherical milling cutter structure that can be connected with the above-mentioned hemispherical connector 1.21. It also includes a milling cutter body 4, which is provided with a cutter head at its front end and a shank at its rear end. In order to connect the shank part with the outer sheath 1, at least one slot 1.4 is provided on the outer wall of the shank. The hemispherical connector 1.21 can be connected in the slot 1.4, thereby achieving the fixation of the outer sheath 1 and the milling cutter body 4. There are two ways to disassemble the two. The first is to bend the card plate 1.2 connected with the slot 1.4 outward to disengage the connector 1.21 from the slot 1.4, and then pull out the milling cutter. In order to make the fingers bear better force when the card plate 1.2 is bent outward, a chamfer 1.22 is set on the inner edge of the top of the connector 1.21. During operation, the fingers can press against the chamfer 1.22 to bend the card plate 1.2 outward, and the chamfer structure can make the milling cutter insert into the outer sheath more quickly. The second disassembly method, since the connector 1.21 is hemispherical and the card plate 1.2 is elastic, the slot 1.4 can be detached from the connector 1.21 by screwing. When screwing, just screw the hemispherical connector 1.21 to a position without the slot 1.4, and then pull out the milling cutter axially. In order to facilitate the screwing of the sheath 1, anti-slip grooves 1.3 are set on the outside of the sheath 1.

[0029] On this basis, in order to make the connection between the outer sheath 1 and the cutter body more tightly, there are two slots 1.4 and they are symmetrically arranged relative to the axis of the cutter handle. Therefore, the outer sheath can also be disassembled by the above two disassembly methods. In addition, the outer sheath in the present application can also be mounted on a milling cutter installed on a machine tool, which can avoid damage to people caused by the cutter when the machine tool is stopped for cleaning.

[0030] In addition, in order to prevent the milling cutter from rolling off the workbench or desktop when the milling cutter is placed, a quadrilateral fixing sleeve 3 is sleeved on the outer wall of the outer sheath 1.

[0031] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A spherical milling cutter protective sheath, comprising an outer sheath (1), a top end of which is provided with a placement opening (1.1), characterized in that: Clamps (1.2) are arranged in a circle around the placement opening (1.1), the clamps (1.2) are elastic and can be moved toward the inner side of the outer sheath (1), and a connector (1.21) is arranged on the inner wall of the clamps (1.2); a buffer sleeve (2) capable of wrapping a blade head is installed at the bottom of the outer sheath (1), wherein the outer wall of the buffer sleeve (2) is arranged to fit the inner wall of the outer sheath (1).

2. A spherical milling cutter protective sheath as claimed in claim 1, characterized in that: The connecting head (1.21) is in a hemispherical shape protruding from the inner wall of the clamping plate (1.2).

3. A spherical milling cutter protective sheath as claimed in claim 2, characterized in that: A chamfer (1.22) is provided on the inner edge of the top of the connecting head (1.21).

4. A spherical milling cutter protective sheath as claimed in claim 2, characterized in that: Anti-slip grooves (1.3) are provided on the outer wall of the outer sheath (1).

5. A spherical milling cutter protective sheath as claimed in claim 1, characterized in that: The buffer sleeve (2) is made of rubber, fabric or EPS polystyrene material and is bonded to the inner wall of the outer sheath (1).

6. A spherical milling cutter protective sheath as claimed in claim 1, characterized in that: A quadrilateral fixing sleeve (3) is also sleeved on the outer wall of the outer sheath (1).

7. A spherical milling cutter protective sheath as claimed in claim 1, characterized in that: The connecting head (1.21) is a strip-shaped texture protruding from the inner wall of the clamping plate (1.2).

8. A spherical milling cutter capable of using the protective sheath as claimed in claim 2, comprising a milling cutter body (4), a cutter head being provided at the front end thereof, and a cutter handle being provided at the rear end thereof, characterized in that: At least one clamping groove (1.4) is provided on the outer wall of the knife handle, and the connecting head (1.21) can be clamped in the clamping groove (1.4).

9. A spherical milling cutter capable of using the protective sheath as claimed in claim 2 according to claim 8, characterized in that: There are two clamping grooves (1.4) which are symmetrically arranged relative to the axis of the tool handle.

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