A tool for removing ring groove swarf

Abstract

The utility model discloses a tool for removing annular groove iron filings, including the tool body, its characterized in that: the blade edge of tool body is provided with the ladder for removing annular groove iron filings.

Description

Technical Field

[0001] This utility model relates to cutting tools, specifically a cutting tool for removing iron filings from annular grooves. Background Technology

[0002] The transmission is a core component of a car, and the valve body assembly is a core component of the transmission. The valve body assembly sends commands to the transmission based on engine load and vehicle speed, changing the gear ratio to give the car good power and fuel economy, and reduce engine emissions.

[0003] The groove in the valve body is used to place the sealing ring. The groove needs to have a good surface roughness, and the processing efficiency is an issue that modern enterprises need to pay attention to.

[0004] Existing technology requires roughing and finishing to ensure product machining accuracy. Due to the product's special characteristics, a 1-2mm blank remains on the part during pre-casting. This causes the roughing tool to cut away the remaining blank, forming a ring that remains in the part. During subsequent finishing, the ring gets caught on the finishing tool, scratching the part surface when the finishing tool retracts, leading to machining instability. Furthermore, the cutting edge of the general cutting tool, due to the small machining allowance of the blank, cannot cut the chips into smaller pieces, resulting in a ring-shaped chip groove. The chips are trapped in this groove within the part, and the limited space prevents them from being flushed away by the cutting fluid. Utility Model Content

[0005] To address the shortcomings of the prior art, this invention provides a cutting tool for removing iron chips from annular grooves. This invention features a stepped cutting edge on the roughing tool, preventing the cut iron chips from forming annular grooves, thus improving machining stability and solving the problem of stuck iron chips.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a cutting tool for removing iron filings from annular grooves, comprising a cutting body, characterized in that: the cutting edge of the cutting body is provided with a step for removing iron filings from annular grooves.

[0007] The number of steps is at least two.

[0008] The step has a first step surface and a second step surface. The second step surface is parallel to the central axis of the blade body, and the first step surface is inclined.

[0009] The width W of the second step surface is greater than 0.25 mm.

[0010] The inclination angle α of the first step surface is 70°–85°.

[0011] In summary, this utility model achieves the following technical effects:

[0012] This invention makes the cutting edge of the roughing tool into a stepped shape. Depending on the cutting diameter allowance, it can be designed with two or more steps. By controlling the removal allowance, the shape of the iron chip is controlled. The cut iron chip will not form a ring groove iron chip, but will be cut off and can be washed away by the cutting fluid. It will not stick to the finishing tool, thus improving the machining stability. Attached Figure Description

[0013] Figure 1 It is a cutting tool for removing iron filings from ring grooves;

[0014] Figure 2 yes Figure 1 Enlarged view of a portion;

[0015] Figure 3 This is a schematic diagram of the part after machining with existing roughing tools;

[0016] Figure 4 yes Figure 3 A magnified view of a portion of the image. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] Example:

[0024] Figure 1 It is a cutting tool for removing iron filings from annular grooves, including a tool body 1, wherein the cutting edge of the tool body 1 is provided with a step 2 for removing iron filings from annular grooves.

[0025] Figure 2 yes Figure 1 The enlarged schematic diagram shows that there are at least two steps 2.

[0026] This invention designs the cutting edge of the tool in a stepped shape, with two or more steps depending on the cutting diameter allowance. By controlling the amount of material removed, the shape of the cut chip can be controlled. For example, the design shown in the figure with three steps prevents the cut chip from forming a ring groove, thus improving machining stability.

[0027] The step 2 has a first step surface 21 and a second step surface 22. The second step surface 22 is parallel to the central axis of the blade body 1, and the first step surface 21 is inclined.

[0028] The outer wall of the blade body 1 serves as the second step surface 22 of the outermost step 2, which, together with the cutting edge of the blade, facilitates cutting.

[0029] The first step surface 21 is inclined, and the cutting edge and the blade head form an obtuse angle structure. Therefore, the inclination direction of the first step surface 21 is to the right and upward as shown in the figure.

[0030] The width W of the second step surface 22 is greater than 0.25 mm.

[0031] The inclination angle α of the first step surface 21 is 70°–85°.

[0032] The width and angle of each step need to be designed according to the yield strength and tensile strength of the material being processed. In this embodiment, the width is above 0.25mm and the angle is half between 70° and 85°.

[0033] Figure 3 This is a schematic diagram of the part after machining with existing roughing tools. Figure 4 yes Figure 3 The enlarged schematic diagram shows that during normal roughing machining, metal chips are cut out. Because the part is a groove, the cut-out chips (raw material allowance) remain inside the groove. When finishing machining continues, the diameter is generally 0.6mm larger than the roughing diameter, and the chips will be carried away by the finishing tool. This invention makes the cutting edge of the roughing tool stepped, so that the chips are no longer ring-shaped and will not get stuck on the subsequent finishing tool. They can be washed away by the cutting fluid, making it easier to use.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A cutting tool for removing iron filings from annular grooves, comprising a tool body (1), characterized in that: The blade body (1) has a step (2) for removing iron filings from the annular groove. The step (2) has a first step surface (21) and a second step surface (22). The second step surface (22) is parallel to the central axis of the blade body (1). The first step surface (21) is inclined. The width W of the second step surface (22) is greater than 0.25 mm. The inclination angle α of the first step surface (21) is 70°-85°.

2. The cutting tool for removing iron filings from annular grooves according to claim 1, characterized in that: The number of steps (2) is at least 2.

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