Cutter and device for machining cage pocket

Abstract

The utility model relates to the technical field of retainer pocket hole machining, in particular to a retainer pocket hole machining tool and device. The mounting part is fixed with a processing machine tool; the first machining part is connected with the mounting part, is provided with a first cutting edge and a second cutting edge which are parallel to each other, and is used for machining a cylindrical hole section; the second machining part is connected with the first machining part, is provided with a third cutting edge and a fourth cutting edge which are parallel to each other, and is used for machining an elliptic cylindrical hole section; the first blade is connected with the third blade; the second blade is connected with the fourth blade; the rotary machining diameter of the first blade is equal to that of the second blade; the rotating machining diameter of the third blade is larger than that of the fourth blade. According to the pocket forming tool, pocket forming is completed through one-time positioning machining of only one tool, no machining defect exists at the tool connecting position of the cylindrical hole section and the elliptic cylindrical hole section of the pocket, and then the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cage pocket hole processing, in particular to a cage pocket hole processing tool and a device. Background Art

[0002] Cages, that is, bearing cages, also known as bearing retainers, are bearing parts that wrap around rolling elements and move with them. They are used to isolate rolling elements and usually guide and retain rolling elements in the bearings. Among them, there is a type of FPCBB cage, where the upper part of the pocket is a cylindrical hole and the lower part is an elliptical cylindrical hole structure. The conventional processing technology is to first use a forming cutter to process a true cylindrical hole, and then use an end mill to process an elliptical cylindrical hole. Processing pockets requires at least two steps, resulting in low processing efficiency. Utility Model Content

[0003] In view of the defects of the prior art, the utility model provides a retainer pocket processing tool and device, which uses only one tool to complete the pocket forming in one positioning process. There are no processing defects at the junction of the cylindrical hole section and the elliptical hole section of the pocket hole, thereby improving product quality.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is a retainer pocket processing tool, the pocket includes a cylindrical hole segment and an elliptical hole segment, which includes a mounting portion, a first processing portion, and a second processing portion; the mounting portion is used to be fixed to a processing machine tool; the first processing portion is connected to the mounting portion, the first processing portion has a first blade and a second blade parallel to each other, and the first processing portion is used to process the cylindrical hole segment; the second processing portion is connected to the first processing portion, the second processing portion has a third blade and a fourth blade parallel to each other, and the second processing portion is used to process the elliptical hole segment; the first blade is connected to the third blade; the second blade is connected to the fourth blade; the rotational processing diameter of the first blade is equal to the rotational processing diameter of the second blade; the rotational processing diameter of the third blade is greater than the rotational processing diameter of the fourth blade.

[0005] Furthermore, the first processing portion is provided with a first chip removal groove and the second processing portion is provided with a second chip removal groove, and the first chip removal groove and the second chip removal groove are collinear.

[0006] Furthermore, an axial angle between the first chip removal groove and the second chip removal groove is 2°.

[0007] Furthermore, the rotation processing diameter of the third blade is Ø5±0.005 mm.

[0008] Furthermore, the rotation processing diameter of the fourth blade is Ø4.6±0.005 mm.

[0009] Furthermore, the rotation processing diameters of the first blade and the second blade are both Ø6 mm.

[0010] A cage pocket processing device comprises a cage pocket processing tool as described above.

[0011] The beneficial effects of the utility model are as follows: a first processing section is provided for processing cylindrical hole segments, and a second processing section is provided for processing elliptical hole segments. Only one tool is used for positioning and processing to complete the pocket hole forming at one time. There are no processing defects at the junction of the cylindrical hole segment and the elliptical hole segment, thereby improving the product quality. The steps of tool replacement and secondary positioning are omitted, which can further improve production efficiency. The original process uses two cycle calls to complete the processing, and the new process uses one cycle call to complete the processing, which shortens the processing time. In addition, since the tool junction defects of the original process depend on the accuracy of the equipment, to improve product quality, more advanced equipment is required, and the equipment accuracy requirements are high. The new process does not have processing defects, so the equipment accuracy requirements are not high, and high-end equipment processing is not required, thereby reducing the operating cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a retainer pocket processing tool in one embodiment of the utility model;

[0013] Figure 2 A schematic diagram of the structure of a cage processed by a cage pocket processing tool in one embodiment of the utility model;

[0014] Figure 3 It is a structural schematic diagram of a cage pocket processed by a cage pocket processing tool in one embodiment of the utility model;

[0015] Figure 4 It is a structural schematic diagram of a retainer pocket processing tool in another embodiment of the utility model;

[0016] Figure 5 for Figure 1 The structural diagram of the middle A direction;

[0017] In the figure: 1, FPCBB cage, 10, pocket hole, 11, cylindrical hole section, 12, elliptical cylinder hole section,

[0018] 100. Installation department,

[0019] 200, first processing part, 210, first cutting edge, 220, second cutting edge, 230, first chip removal groove,

[0020] 300, second processing portion, 310, third cutting edge, 320, fourth cutting edge, 330, second chip removal groove. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] See also Figure 1 Figure 1 shows a cage pocket processing tool used for processing structures such as Figure 2 The FPCBB cage 1 shown in the figure has a pocket 10 including a cylindrical hole section 11 and an elliptical cylinder hole section 12. The cage pocket processing tool includes a mounting portion 100, a first processing portion 200 and a second processing portion 300. The mounting portion 100 is used to be fixed to a processing machine tool. The first processing portion 200 is connected to the mounting portion 100. The first processing portion 200 has a first blade 210 and a second blade 220 that are parallel to each other. The first processing portion 200 is used to process the cylindrical hole section 11. The second processing portion 30 0 is connected to the first processing part 200, the second processing part 300 has a third blade 310 and a fourth blade 320 which are parallel to each other, and the second processing part 300 is used to process the elliptical cylinder hole section 12; the first blade 210 is connected to the third blade 310, the second blade 220 is connected to the fourth blade 320, the rotation processing diameter of the first blade 210 is equal to the rotation processing diameter of the second blade 220; the rotation processing diameter of the third blade 310 is larger than the rotation processing diameter of the fourth blade 320. It should be noted that since the rotation processing diameter of the third blade 310 is larger than the rotation processing diameter of the fourth blade 320, the difference is small. Figure 1 As shown in the figure, the third blade 310 on one side overlaps with the fourth blade 320 . It should be emphasized here that the side relatively far from the axis is the third blade 310 , and the side relatively close to the axis is the fourth blade 320 . Figure 1 In the figure, a is a schematic diagram of the rotation processing diameter of the fourth blade 320 ; and b is a schematic diagram of the rotation processing diameter of the third blade 310 .

[0023] The original process used two tools to complete the pocket hole forming. Due to the objective existence of tool size deviation and equipment repeat positioning accuracy deviation, there are bound to be processing defects (overcut or step) at the junction of the tool on the cylindrical surface of the pocket hole. The worse the equipment accuracy, the more obvious the defects, which seriously affect the appearance quality of the product and the position accuracy of the pocket hole.

[0024] The above-mentioned retainer pocket processing tool is provided with a first processing part 200 for processing the cylindrical hole segment 11, and a second processing part 300 for processing the elliptical cylinder hole segment 12. Only one tool is used to complete the pocket hole forming by one-time positioning processing. There are no processing defects at the junction of the pocket cylindrical hole segment 11 and the elliptical cylinder hole segment 12, thereby improving the product quality. The steps of tool replacement and secondary positioning are omitted, which can further improve production efficiency. The original process uses two cycle calls to complete the processing, and the new process uses one cycle call to complete the processing, which shortens the processing time. In addition, since the tool connection defects of the original process depend on the equipment accuracy, to improve product quality, more advanced equipment is required, and the equipment accuracy requirements are high. The new process does not have processing defects, so the equipment accuracy requirements are not high, and high-end equipment processing is not required, thereby reducing the operating cost of the equipment.

[0025] In one embodiment, the first processing part 200 is provided with a first chip groove 230 and the second processing part 300 is provided with a second chip groove 330, and the first chip groove 230 and the second chip groove 330 are collinear. With such a configuration, during the processing, the metal chips discharged from the first processing part 200 and the second processing part 300 can be discharged relatively smoothly along the first chip groove 230 and the second chip groove 330. In order to improve the efficiency of chip removal, preferably, in one embodiment, the first chip groove 230 is inclined and the second chip groove 330 is inclined. Preferably, in one embodiment, the axial angle between the first chip groove 230 and the second chip groove 330 is 2°.

[0026] See also Figure 4 and Figure 5 In one embodiment, the rotation processing diameter of the third blade 310 is Ø5±0.005 mm, and the rotation processing diameter of the fourth blade 320 is Ø4.6±0.005 mm.

[0027] On the basis of the above embodiment, further, the rotation processing diameters of the first blade 210 and the second blade 220 are both Ø6 mm.

[0028] It should be noted that the rotational processing diameter of the third blade 310 and the rotational processing diameter of the fourth blade 320 are determined by the size of the processed elliptical cylindrical hole segment 12, the rotational processing diameter of the first blade 210 and the rotational processing diameter of the second blade 220 are determined by the size of the cylindrical hole segment 11, and the rotational processing diameter of the first blade 210 is equal to the rotational processing diameter of the second blade 220.

[0029] A cage pocket processing device comprises a cage pocket processing tool as described above.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

Claims

1. A tool for machining a retainer pocket hole, the pocket hole comprising a cylindrical hole section and an elliptical cylinder hole section, characterized in that: include A mounting portion, used for fixing to a processing machine tool; A first processing portion connected to the mounting portion, the first processing portion having a first blade and a second blade parallel to each other, and the first processing portion is used to process the cylindrical hole segment; as well as a second processing part connected to the first processing part, the second processing part having a third blade and a fourth blade parallel to each other, and the second processing part is used for processing the elliptical cylinder hole segment; The first blade is connected to the third blade; The second blade is connected to the fourth blade; The rotation processing diameter of the first blade is equal to the rotation processing diameter of the second blade; The rotation processing diameter of the third blade is larger than the rotation processing diameter of the fourth blade.

2. A retainer pocket machining tool according to claim 1, characterized in that: The first processing portion is provided with a first chip removal groove, the second processing portion is provided with a second chip removal groove, and the first chip removal groove and the second chip removal groove are collinear.

3. A retainer pocket machining tool according to claim 2, characterized in that: The axial angle between the first chip removal groove and the second chip removal groove is 2°.

4. A retainer pocket machining tool according to claim 1, characterized in that: The rotation processing diameter of the third blade is Ø5±0.005 mm.

5. The retainer pocket machining tool according to claim 1, characterized in that: The rotation processing diameter of the fourth blade is Ø4.6±0.005 mm.

6. A retainer pocket machining tool according to claim 1, characterized in that: The rotation processing diameters of the first blade and the second blade are both Ø6 mm.

7. A cage pocket processing device, characterized in that: It comprises a retainer pocket machining tool as claimed in any one of claims 1 to 6.

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