Three-blade T-shaped finish machining milling cutter for removing groove plastic burrs

Abstract

The utility model provides a three-blade T-shaped finish machining milling cutter for removing groove plastic burrs, which comprises a cutter handle, the front end of the cutter handle is sequentially connected with a neck part and a blade part, three cutting blades are arranged on the blade part along the circumferential direction, a cutter groove for chip removal is formed between adjacent cutting blades, the front end of each cutting blade is provided with a front end concave angle, and the front end concave angle is provided with a front end concave angle. A rear end concave angle is arranged at the connecting position of the cutting edge and the neck portion, the cutting edge is provided with a linear rear angle, and the cutting edge is in a right-handed rotation and left-handed cutting mode. The cutter is a three-blade T-shaped finish machining milling cutter, the cutter is sharp, vibration is reduced, cutting is smooth, burr removal and chip removal are smoother by changing the rotating direction, the tangential direction and important parameters of the cutter and optimizing other structures, and therefore the purpose of reducing burrs is achieved. Manpower and time for subsequent manual deburring of a work station are reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a three-blade T-shaped finishing milling cutter for removing plastic burrs of grooves, which is suitable for the 3C industry and is used for finishing the grooves of aluminum alloy and plastic combination parts. Background Art

[0002] At present, aluminum alloy and plastic combination parts are mostly used in digital products in the 3C industry (i.e., the abbreviation of three types of electronic products: Computer, Communication and Consumer Electronics) . However, during the processing, the plastic burrs on them are due to the particularity of the processed products (aluminum-plastic combination). When the tool processes the groove, large burrs appear on the edge of the plastic groove. Since the thickness of the plastic part is relatively thin, manual auxiliary tools are used to remove the burrs, which increases the time cost and labor cost, and the product quality is unstable. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a three-blade T-shaped finishing milling cutter for removing plastic burrs of grooves.

[0004] The utility model solves the technical problem by adopting the following technical solution: a three-blade T-type finishing milling cutter for removing plastic burrs in grooves, comprising a shank, the front end of the shank being connected in sequence with a neck and a blade, three cutting edges being arranged circumferentially on the blade, a tool groove for chip removal being formed between adjacent chip cutting edges, the front end of each cutting edge having a front end concave angle, the connection between the chip cutting edge and the neck having a rear end concave angle, the cutting edge having a straight back angle, and the cutting edge being a right-handed left-cutting type.

[0005] Preferably, the helix angle N of the cutting edge is 30°.

[0006] Specifically, the front end inner concave angle M1 and the rear end inner concave angle M2 are equal in size, both of which are 5°.

[0007] Furthermore, the cutting edge includes a top edge and a peripheral edge, the top edge extends radially, and the end is connected to the peripheral edge, and the peripheral edge has a peripheral edge-back angle surface with a back angle J of 12°.

[0008] Specifically, the front angle K of the knife groove is 14°.

[0009] Specifically, the blade diameter A of the blade portion ranges from 3 to 25 mm, and the blade length D is not less than 3 mm and not greater than the blade diameter A.

[0010] Specifically, the neck diameter B of the neck is at least 1 mm smaller than the blade diameter A and not less than 0.5 times the blade diameter A, and the neck length E is not less than 5 mm.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a three-edge T-shaped finishing milling cutter for removing burrs from groove plastics. The cutter is a three-edge T-shaped finishing milling cutter. By changing the rotation direction and tangent direction of the cutter, important parameters and other structural optimizations, the cutter is sharp, vibration is reduced, cutting is smooth, burrs are removed and chips are removed more smoothly, thereby achieving the purpose of reducing burrs. The manpower and time of manual deburring in subsequent workstations are reduced, and product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model three-edge T-shaped finishing milling cutter.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the utility model three-edge T-shaped finishing milling cutter.

[0015] Figure 3 It is a side structural schematic diagram of the utility model three-edge T-shaped finishing milling cutter.

[0016] Figure 4 It is a schematic diagram of the top structure of the three-edge T-shaped finishing milling cutter of the utility model.

[0017] Figure 5 It is a schematic diagram of the dimensions and angles of a three-edged T-shaped finishing milling cutter of the utility model.

[0018] Figure 6 It is a schematic diagram of the structure of the straight back angle of the cutting edge.

[0019] In the figure: 1, handle, 2, neck, 3, blade, 4, cutting edge, 5, knife groove, 6, rear end concave angle, 7, front end concave angle. DETAILED DESCRIPTION

[0020] The present invention is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter for which protection is sought is limited only by the attached claims and their equivalents.

[0021] like Figure 1-Figure 6As shown, the utility model is a three-blade T-shaped finishing milling cutter for removing plastic burrs in grooves. The T-shape refers to the shape of the tool in which the blade diameter A is larger than the neck diameter B, and the cutting edge L of the tool has a front end and a rear end. The shape is similar to a "T", including a shank 1. The front end of the shank 1 is sequentially connected to a neck 2 and a blade 3. Three cutting edges 4 are circumferentially arranged on the blade 3. A tool groove 5 for chip removal is formed between adjacent chip cutting edges. The cutting edge 4 includes a top edge and a peripheral edge. The top edge extends radially and the end is connected to the peripheral edge. The peripheral edge has a peripheral edge-back angle surface with a back angle J of 12°. The front end of each cutting edge 4 has a front end concave angle 7, and the connection between the chip cutting edge and the neck 2 has a rear end concave angle 6. As shown Figure 6 As shown, the cutting edge 4 has a linear clearance angle. The linear clearance angle structure means that the clearance face of the cutting edge 4 is a plane, and the projection of the plane in the radial direction of the tool is a straight line. The angle between the straight line and the tangent is the linear clearance angle. The cutting edge 4 is a right-handed left-handed type. Preferably, the helix angle N of the cutting edge 4 is 30°. The front end concave angle M1 and the rear end concave angle M2 are equal in size, both of which are 5°. The rake angle K of the tool groove 5 is 14°. The rake angle K refers to the angle between the tangent of the rake face of the tool groove at the cutting edge tip and the tool center line passing through the tip (as shown in FIG. Figure 6 As shown). In this embodiment, the blade diameter A of the milling cutter blade 3 is 3-25 mm, and the blade length D is not less than 3 mm and not greater than the blade diameter A; the neck diameter B of the neck 2 is at least 1 mm smaller than the blade diameter A and not less than 0.5 times the blade diameter A, and the neck length E is not less than 5 mm; the handle diameter C of the tool handle 1 is not less than the neck diameter B and not greater than 32 mm, and the handle length F is not less than 30 mm; the dimensions of the blade length D, neck length E, handle length F, neck diameter B and handle diameter C determine the total length G. The tool structure and parameters are shown in Table 1.

[0022] Table 1 Tool structure and parameters

[0023]

[0024] The three-edge T-shaped finishing milling cutter of the utility model has the following advantages:

[0025] (1) Design the tool rotation and tangent direction to change the cutting direction, thereby controlling the cutting direction and chip removal direction of the finishing tool, achieving the purpose of reducing burrs and improving product quality.

[0026] (2) Design important tool parameters and structure: Increase the back angle of the peripheral blade and the front angle of the tool groove to make the tool sharper and remove burrs more smoothly; design a straight back angle structure to make the tool sharper and reduce vibration; increase the concave angle to increase the tool clearance and make cutting smoother; control the helix angle to make chip removal smoother.

[0027] (3) By optimizing the machine tool automated cutting technology, the subsequent deburring labor cost and time cost can be saved.

[0028] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model 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 three-edge T-shaped finishing milling cutter for removing burrs from groove plastics, characterized in that: It comprises a shank, the front end of which is connected in sequence with a neck and a blade, three cutting edges are arranged circumferentially on the blade, a groove for chip removal is formed between adjacent chip cutting edges, the front end of each cutting edge has a front end concave angle, the connection between the chip cutting edge and the neck has a rear end concave angle, the cutting edge has a linear back angle, and the cutting edge is a right-handed left-cutting type.

2. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The helix angle N of the cutting edge is 30°.

3. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The front end inner concave angle M1 and the rear end inner concave angle M2 are equal in size, both being 5°.

4. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The cutting edge comprises a top edge and a peripheral edge, and the peripheral edge has a peripheral edge-back angle surface with a back angle J of 12°.

5. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The front angle K of the knife groove is 14°.

6. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The blade diameter A of the blade portion has a size range of 3 to 25 mm, and the blade length D is not less than 3 mm and not greater than the blade diameter A.

7. The three-edge T-shaped finishing milling cutter for removing plastic burrs from grooves as claimed in claim 1, characterized in that: The neck diameter B of the neck is at least 1 mm smaller than the blade diameter A and not less than 0.5 times the blade diameter A, and the neck length E is not less than 5 mm.

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