Outer circle rolling cutter

Abstract

An outer circle rolling cutter is characterized by comprising a ball, a cutter body, a bearing and a shaft neck. The ball is located at the front end of the cutter body and used for making direct contact with a workpiece to achieve rolling operation. The cutter body is used for connecting the ball and the bearing and serves as a main body structure; an inner chamfer is formed in the front end face of the cutter body and used for fixing the balls and achieving easy and convenient ball replacement; the bearing is positioned between the cutter body and the shaft neck and is used for supporting the ball; the shaft neck is used for being connected with a driving device and transmitting power. The device is compact in design and simple in structure, balls can be replaced easily and conveniently through optimization design, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining cutters, in particular to an external cylindrical rolling cutter. Background Art

[0002] Rolling cutters are a type of pressure finishing process in mechanical processing that utilizes the cold plastic properties of metals at room temperature. The rolling cutter applies appropriate pressure to the workpiece surface, causing the metal layer on the workpiece surface to flow plastically. This flow allows the metal to fill the microscopic depressions of the original surface, thereby significantly reducing the surface roughness. This process not only improves the surface finish of the workpiece, but also enhances its wear resistance, corrosion resistance, and matching performance with other parts. Especially in the production of mining hydraulic valves, since these valves usually contain a large number of sliding parts, the use of rolling cutters for processing can effectively ensure the long-term durability and sliding function of the parts, thereby ensuring the reliability and stability of the overall structure. Utility Model Content

[0003] The purpose of the utility model is to provide an external cylindrical rolling cutter, which, through balls, blades, bearings and journals, can ensure the long-term durability and sliding function of parts when producing sliding parts of mining hydraulic valves, ensure the reliability and stability of the overall structure, and can easily replace balls to improve processing efficiency.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: an external cylindrical rolling cutter, characterized in that it includes a ball, a blade, a bearing, and a journal; the ball is located at the front end of the blade, and is used to directly contact the workpiece to realize the rolling operation; the blade is used to connect the ball and the bearing, as the main structure; the front end surface of the blade is chamfered internally, which is used to fix the ball and realize easy replacement of the ball; the bearing is located between the blade and the journal, which is used to support the ball; the journal is used to connect the drive device to transmit power.

[0005] As an external cylindrical rolling cutter of the utility model, the feature is that the two sides of the front end of the cutter body are chamfered so that the action surface of the ball can move to the bottom of the processed part to increase the rolling action range.

[0006] As an external cylindrical rolling cutter of the utility model, the feature is that the ball is made of hard alloy material; the blade is made of high-strength steel, so that the Rockwell hardness of the rolling cutter reaches above 60.

[0007] As an external cylindrical rolling cutter of the utility model, it is characterized in that the bearing is a high-precision rolling bearing for providing stable and accurate support.

[0008] The utility model provides an external cylindrical rolling cutter, which has the following beneficial effects:

[0009] The external cylindrical rolling cutter has a simple structural design and convenient assembly method, which can ensure that the reliability and stability of the overall structure are improved, thereby reducing the possibility of failure and maintenance costs, and effectively controlling labor costs and technical requirements. The design of easy replacement of the ball makes maintenance work more convenient and quick, improves work efficiency and reduces downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front three-dimensional schematic diagram of the utility model;

[0011] Figure 2 This is a three-dimensional diagram of the front view of the blade.

[0012] In the figure: 1. ball bearing; 2. blade; 3. bearing; 4. journal. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0014] See also Figure 1-2 The utility model provides a technical solution: an external cylindrical rolling cutter, comprising:

[0015] In this implementation scheme: first, the specifications of the blade are designed, an inner chamfer is designed on the front end face of the blade and chamfers are opened on both sides of the front end, high-strength steel is processed on a CNC machine tool, and the shape of the blade is made according to the drawing; a ball made of a cemented carbide material is installed in the chamfer of the front end face of the blade, the bearing is placed in the slot from above the blade, the journal connects the two sides of the bearing from both sides, and the journal is placed in the openings on both sides of the blade; the journal is connected to the drive device to ensure that the power can be effectively transmitted to the rolling cutter; the drive device is turned on to check whether the ball can rotate smoothly and whether the bearing is stable; a trial rolling is carried out on the actual workpiece to observe the rolling effect and the stability of the tool; according to the test results, the position of the ball is adjusted or the ball of different specifications is replaced to optimize the rolling effect; the tightness of the bearing is adjusted or the bearing is replaced to ensure the stability of the support.

[0016] Specifically, both sides of the front end of the blade body are chamfered so that the action surface of the ball can move to the bottom of the processed part, thereby increasing the rolling action range.

[0017] In this embodiment: when designing the blade drawing, a 4.25 cm chamfer is designed at the front end of the blade according to the usage scenario, which is used for the ball cutting to the bottom of the processed part.

[0018] Specifically, the ball bearing is made of hard alloy material; the blade body is made of high-strength steel, so that the Rockwell hardness of the rolling blade reaches above 60.

[0019] In this embodiment, the blade is made of high-strength steel and the ball is made of cemented carbide to ensure that the Rockwell hardness of the rolling knife reaches 60 or above.

[0020] Specifically, the bearing is a high-precision rolling bearing, which is used to provide stable and accurate support.

[0021] In this embodiment: the bearings are selected from high-precision rolling bearings.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An external cylindrical rolling cutter, characterized in that: The invention comprises a ball (1), a blade (2), a bearing (3), and a journal (4); the ball (1) is located at the front end of the blade and is used to directly contact a workpiece to realize a rolling operation; the blade (2) is used to connect the ball and the bearing and serves as a main structure; the front end surface of the blade (2) is provided with an inner chamfer to fix the ball (1) and realize easy replacement of the ball; the bearing (3) is located between the blade (2) and the journal (4) and is used to support the ball; and the journal (4) is used to connect a driving device to transmit power.

2. The outer cylindrical rolling cutter according to claim 1, characterized in that: The front end of the blade (2) is chamfered on both sides so that the ball action surface can move to the bottom of the processed part, thereby increasing the rolling action range.

3. The outer cylindrical rolling cutter according to claim 1, characterized in that: The ball (1) is made of hard alloy material; the blade (2) is made of high-strength steel, so that the Rockwell hardness of the rolling blade reaches above 60.

4. The outer cylindrical rolling cutter according to claim 1, characterized in that: The bearing (3) is a high-precision rolling bearing, which is used to provide stable and accurate support.

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