Cutter for machining injection mold

Abstract

The utility model belongs to the technical field of injection mold machining, and particularly discloses a cutter for injection mold machining, which is provided with a cutter axis and a plurality of blades, the blades are parallel to the cutter axis and are sequentially and vertically connected, each blade is provided with a cutter tip and a tooth-shaped surface for milling, and the cutter tip is provided with a plurality of tooth-shaped grooves. The tooth-shaped face and the cutter tip end face are continuous through an avoiding step. A traditional mode that the cutter teeth are fixed on the cutter point through screws is replaced, the cutter teeth are directly machined on the cutter point, and the cutter teeth and the cutter point are integrated, so that the situation that the milling plane is uneven due to the fact that connection between the cutter teeth and the cutter point is loosened is avoided, the milling quality is improved, and finally the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection mold processing. Injection mold processing mainly refers to the processing of each component of the mold, such as processing the moving mold, the fixed mold, the slider, etc. Specifically, it relates to a tool for injection mold processing. Background Technique

[0002] Machining includes milling. Among them, a milling cutter is required during milling. It has multiple cutting teeth and can perform cutting simultaneously. The milling cutter is used on a milling machine to process planes, steps, grooves, formed surfaces, and cut workpieces, etc.

[0003] The cutting teeth on the traditional milling cutter are fixed on the cutting edge through fasteners such as screws for milling operations on parts. In addition, during milling, the milling depth is often controlled by the milling equipment using numerical control technology. However, for some parts that require manual milling, using milling equipment to control the depth during milling would be a case of "using a sledgehammer to crack a nut".

[0004] However, during the milling process, due to the existence of screws, there will be a situation where the milling plane is uneven due to screw loosening during milling, and when using manual milling, it is impossible to determine the milling depth, resulting in inconsistent milling depths, thus resulting in a low milling quality, seriously affecting the quality of the product. Content of the Utility Model

[0005] The utility model provides a tool for injection mold processing, aiming to replace the traditional method of fixing the cutting teeth on the blade through screws, directly machining the cutting teeth on the blade, making the blade and the cutting edge an integral body, thereby avoiding the situation of uneven milling planes caused by loosening of the connection between the cutting teeth and the blade, so as to improve the milling quality and ultimately improve the product quality.

[0006] The technical problems to be solved by the utility model are achieved by adopting the following technical solutions:

[0007] A tool for injection mold processing, the tool has a tool axis, includes a plurality of blades, the plurality of blades are all parallel to the tool axis, and the plurality of blades are sequentially vertically connected. The blade has a cutting tip and a tooth-shaped surface for milling processing, and the tooth-shaped surface and the end face of the cutting tip are continuous through an avoidance step.

[0008] Preferably, the avoidance step is a right-angle step.

[0009] Preferably, the plurality of blades are sequentially vertically connected by being in contact with each other.

[0010] Preferably, the number of the blades is four.

[0011] Preferably, the tool tip has a rake angle and a clearance angle respectively; the rake angle is 1-5°, and the clearance angle is -10-0°.

[0012] Preferably, a plurality of cutter teeth are provided on the tooth-shaped surface.

[0013] Furthermore, a plurality of the cutter teeth are parallel to each other.

[0014] Furthermore, the number of the cutter teeth is three and they are parallel to each other.

[0015] Preferably, the blade also has a tool root, and a chip flute is formed between the tool tip and the tool root; the bottom of the blade is connected to a tool shank.

[0016] Preferably, the chip flute is arranged along the length direction of the tool axis.

[0017] Preferably, an arc surface is also provided at the bottom of the chip flute, and the arc surface is near the tool shank.

[0018] Preferably, the length of the tool shank is greater than the length of the blade.

[0019] Preferably, the shapes of the cutting edge and the blade are both cylindrical.

[0020] The beneficial effects of the present utility model are as follows:

[0021] (1) The present utility model replaces the traditional way of fixing cutter teeth on the tool tip by screws, and directly processes cutter teeth on the tool tip, making the cutter teeth and the tool tip an integral body, thereby avoiding the situation that the connection between the cutter teeth and the tool tip becomes loose, resulting in an uneven milling plane, so as to improve the milling quality and ultimately improve the product quality;

[0022] (2) The three cutter teeth on the tool tip of the present utility model perform milling operations on the internal retaining hole. Since the cutter teeth on two adjacent surface blades are parallel to each other, when the milling equipment drives the tool to rotate, when moving from the cutter teeth on one blade to the cutter teeth on its adjacent blade, at this time when milling the internal retaining hole, milling can be carried out at the same height of the internal retaining hole, so as to deepen the milling degree. During milling, the chips on the internal retaining part are discharged from the tool through the chip flute and the arc edge on the chip flute.

[0023] (3) An avoidance step is provided on the end face of the cutter tooth, which is used for limiting the milling depth, ensuring the consistency of the milling depth during the processing; it helps to control the formation and discharge of chips during milling, reduce the concentration of cutting force and heat; it can be used as a positioning feature during milling, improving the machining accuracy and repeatability; it can increase the contact surface area between the cutter tooth and the part, improving the stability during the processing, and contacting the step on the part through this avoidance step inside the part for positioning. Description of the Drawings

[0024] Figure 1 is a schematic structural view of the cutting tool in the present utility model;

[0025] Figure 2 is a schematic structural view of the cutting tool when milling at a position on the internal buckle part in the present utility model;

[0026] Figure 3 is a schematic structural view of the cutting tool when milling at another position on the internal buckle part in the present utility model;

[0027] Figure 4 is a sectional view of the cutting tool when milling on the internal buckle part in the present utility model;

[0028] Figure 5 is Figure 4 an enlarged view of the milling position when the cutting tool mills on the internal buckle part in

[0029] Figure 6 is a sectional view of the internal buckle part after milling in the present utility model;

[0030] In the figure: cutting tool 1; cutting blade 11; rake angle 101; clearance angle 102; chip flute 103; arc surface 1031; cutting tooth 104; relief step 105; tool shank 12; internal buckle part 2; internal buckle hole 3. Specific embodiments

[0031] In order to clearly understand the technical means, creative features, achieved purposes and effects of the present utility model, the present utility model will be further described below with reference to specific drawings.

[0032] Embodiment 1

[0033] Such as Figure 1As shown, a tool for processing an injection mold has a tool axis, the tool is an integrated tool with a tool handle 12 and a blade 11 fixedly connected, the length of the tool handle 12 is greater than the length of the blade 11, the four blades 11 are parallel to the tool axis, and the four blades 11 are connected vertically in sequence, the blade 11 has a tool tip and a toothed surface for milling processing, along the tool axis direction, three parallel tool teeth 104 are arranged on the toothed surface, and the tool teeth 104 on two adjacent toothed surfaces are parallel, the toothed surface and the tool tip surface are connected by an avoidance step 105, and the avoidance step 105 is a right-angle step; avoidance platform The end of the step 105 is rounded; the tip of the tool has a front angle 101 and a back angle 102; the front angle 101 is 1-5°, and the back angle 102 is -10-0°. The purpose is to make the teeth 104 on the tool 1 sharp and discharge them in a spiral shape during cutting, so that iron chips are not easily accumulated in the chip groove 103; the blade 11 also has a root portion, and a chip groove 103 is formed between the tip and the root portion; the bottom of the blade 11 is connected to the handle 12, and the chip groove 103 is arranged along the axis of the tool; the bottom of the chip groove 103 is also provided with an arc surface 1031, and the arc surface 1031 is located near the handle 12.

[0034] like Figures 2-6 As shown, the injection mold is processed as follows using the above-mentioned tool:

[0035] First, the tool 1 contacts the inner buckle part 2 on the movable mold side of the silicone mold, and is CNC processed in one step; wherein: CNC processing is performed on a CNC high-speed milling device; a milling parameter path of the tool 1 on the inner buckle part 2 is set on the CNC high-speed milling device, and the tool 1 performs milling processing on the inner buckle part 2 along this path; an inner buckle hole 3 is milled on the inner buckle part 2 by the tool 1, and the milling is uniform during milling; specifically: the tool handle 12 is installed on the milling device (this installation method is relatively common in current specific production applications, so it will not be elaborated in detail, and the distance of the milling device is: milling machine), the blade 1 The three teeth 104 on the tool 1 perform milling operation on the inner buckle hole 3. Since the teeth 104 on two adjacent blades 11 are parallel to each other, when the milling equipment drives the tool 1 to rotate, from the tooth 104 on one blade 11 to the tooth 104 on the adjacent blade 11, when the inner buckle hole 3 is milled again, the milling can be performed at the same height of the milling inner buckle hole 3, so that the milling degree can be deepened. During milling, the chips on the inner buckle part 2 are discharged from the tool 1 through the chip groove 103 and the arc edge 1031 on the chip groove 103. The time for CNC processing of each inner buckle part 2 is 2 hours.

[0036] In addition, it should be noted that the arrangement of the avoidance step 105 on the tool 1 mainly has the following effects:

[0037] (1) It can be used as a limit for the milling depth to ensure the consistency of the milling depth during the processing;

[0038] (2) Contributes to controlling the formation and discharge of chips during milling, reducing the concentration of cutting force and heat;

[0039] (3) Can be used as a positioning feature during the milling process to improve machining accuracy and repeatability;

[0040] (4) Can increase the surface area of contact between the cutting teeth and the part, improving the stability during the machining process

[0041] (5) Inside the part, through this avoidance step 105, it contacts the step on the part to perform positioning.

[0042] Adopting this solution, during the process of machining the internal buckle part 2, directly using the process of manufacturing the tool - CNC machining, compared with the machining process used in the prior art, the steps are reduced. The machining time of each part on the CNC equipment is 2h, so the machining time is reduced, and the machining efficiency is greatly improved. And there is no need for the electrical discharge machining of the spark machine used in the prior art, so there is no need to worry about the existence of spark marks on the part, thus improving the surface finish of the part and reducing the difficulty for subsequent machining.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for processing an injection mold, characterized in that: The tool has a tool axis, including multiple blades, all of which are parallel to the tool axis and vertically connected in sequence. The blades have a tool tip and a toothed surface for milling, and the toothed surface and the tool tip surface are connected by an avoidance step.

2. The tool for processing an injection mold according to claim 1, characterized in that: The plurality of blades are connected in sequence in a vertical manner.

3. The tool for processing an injection mold according to claim 1, characterized in that: The avoidance step is a right-angle step.

4. The tool for processing an injection mold according to claim 1, characterized in that: The knife tip has a front angle and a back angle respectively; the front angle is 1-5°, and the back angle is -10-0°.

5. The tool for processing an injection mold according to claim 1, characterized in that: The toothed surface is provided with a plurality of cutter teeth.

6. The tool for processing an injection mold according to claim 1, characterized in that: The blade also has a blade root portion, and a chip removal groove is formed between the blade tip and the blade root portion; The bottom of the blade is connected to the handle.

7. The tool for processing an injection mold according to claim 6, characterized in that: The chip removal groove is arranged along the length direction of the tool axis.

8. The tool for processing an injection mold according to claim 6, characterized in that: The bottom of the chip removal groove is also provided with a curved surface, and the curved surface is located near the tool handle.

Images