Shaft sleeve edge milling and drilling tool

Abstract

The utility model relates to the technical field of tools, in particular to a shaft sleeve edge milling and drilling tool which comprises a machining part and a fixing part which are integrally arranged up and down, a vertical outer side wall is arranged on the peripheral face of the machining part, a machining platform is arranged on the upper surface of the machining part, and a rectangular shaft sleeve containing cavity extending downwards is formed in the machining platform. A chip removal hole extending into the fixing part is formed in the bottom wall of the shaft sleeve containing cavity, threaded holes extending into the shaft sleeve containing cavity are formed in the two sides of the vertical outer side wall in a penetrating mode, and fastening bolts are installed in the threaded holes. When the shaft sleeve needs to be machined, firstly, the shaft sleeve to be machined is placed in the shaft sleeve containing cavity, the front side wall, the rear side wall, the left side wall, the right side wall and the bottom wall of the shaft sleeve containing cavity are tangent to or attached to the shaft sleeve, the top of the shaft sleeve extends out of the shaft sleeve containing cavity, and the fastening bolt is screwed down so that the shaft sleeve can be tightly fixed in the shaft sleeve containing cavity. According to the shaft sleeve drilling device, the shaft sleeve can be rapidly and accurately positioned, then cutting and drilling are carried out, the machining precision is high, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, in particular to a shaft sleeve milling and drilling tooling. Background Art

[0002] A shaft sleeve is a cylindrical mechanical part sleeved on a rotating shaft and is a component of a sliding bearing. Generally, the shaft sleeve and the bearing seat are in interference fit, while the shaft sleeve and the shaft are in clearance fit. Some shaft sleeves on existing tractors need to be symmetrically trimmed on both sides of the shaft sleeve and drilled on the trimmed edges. Since the side wall of the shaft sleeve is smooth and arc-shaped, it is difficult for existing molds to achieve precise positioning and inconvenient for drilling. Therefore, it is necessary to design a special drilling tooling for such shaft sleeves to improve the processing efficiency. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a shaft sleeve milling and drilling tooling that is convenient for positioning the shaft sleeve and improves the processing efficiency.

[0004] To solve the above technical problem, the technical solution of the utility model is: a shaft sleeve milling and drilling tooling, including a base, the base includes a processing part and a fixing part that are integrally arranged up and down. The outer peripheral surface of the processing part is provided with a vertical outer wall. The upper surface of the processing part is provided with a processing platform. A rectangular shaft sleeve accommodating cavity extending downward is opened on the processing platform. A chip discharging hole extending into the interior of the fixing part is provided on the bottom wall of the shaft sleeve accommodating cavity. Threaded holes extending into the shaft sleeve accommodating cavity are provided on both sides of the vertical outer wall. A fastening bolt is installed in the threaded hole.

[0005] As a preferred technical solution, the length of the shaft sleeve accommodating cavity is equal to the outer diameter of the shaft sleeve, the width of the shaft sleeve accommodating cavity is equal to the thickness of the shaft sleeve, and the height of the shaft sleeve accommodating cavity is equal to the height of the finished shaft sleeve.

[0006] As a preferred technical solution, the height of the central axis of the threaded hole is equal to half of the height of the shaft sleeve accommodating cavity, the aperture of the threaded hole is smaller than the wall thickness of the shaft sleeve, and the distance from the central axis of the threaded hole to the inner wall of the shaft sleeve accommodating cavity is equal to half of the wall thickness of the shaft sleeve.

[0007] As a preferred technical solution, the end of the fastening bolt is provided with an anti-slip plane.

[0008] As a preferred technical solution, the chip discharging hole is located at the center of the bottom wall of the shaft sleeve accommodating cavity, and the aperture of the chip discharging hole is larger than the aperture of the shaft sleeve processing hole.

[0009] Due to the adoption of the above technical solution, the bushing milling and drilling tooling includes a base, which consists of a processing part and a fixing part integrally arranged up and down. The outer peripheral surface of the processing part is provided with a vertical outer wall, and the upper surface of the processing part is provided with a processing platform. A rectangular bushing accommodating cavity extending downward is opened on the processing platform. A chip discharging hole extending into the interior of the fixing part is provided on the bottom wall of the bushing accommodating cavity. Threaded holes extending into the bushing accommodating cavity are provided on both sides of the vertical outer wall. Tightening bolts are installed in the threaded holes. The beneficial effect of the present utility model is that when machining a bushing, first place the bushing to be machined into the bushing accommodating cavity. At this time, the front, rear, left, and right four side walls and the bottom wall of the bushing accommodating cavity are respectively tangent to or in contact with the bushing, and the top of the bushing extends out of the bushing accommodating cavity. Then tighten the tightening bolts to firmly fix the bushing in the bushing accommodating cavity. The cutting tool controls the distance a from the processing platform through a numerical control machine tool. This distance a is also the height of the part that needs to be cut off from the bushing. After machining the top end of the bushing, turn the bushing upside down with the bottom facing up. At this time, the top plane of the machined bushing fits with the bottom surface of the bushing accommodating cavity, and the part of the bushing extending out of the bushing accommodating cavity at the bottom is the bottom part to be cut off next. At this time, the numerical control machine tool controls the cutting tool to cut the bottom of the bushing along the processing platform, and then the numerical control machine tool controls the drill bit to drill holes in the centers of the machined bottom plane and the top plane in sequence. The chip discharging hole can provide sufficient avoidance space for the drill bit. After the drilling is completed, the bushing machining is finished. Unscrew the tightening bolts and take out the machined bushing. The present utility model can quickly and accurately position the bushing, and then perform cutting and drilling, with high machining accuracy and improved processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model. Among them:

[0011] Figure 1 is a schematic structural diagram of the bushing milling and drilling tooling of the present utility model;

[0012] Figure 2 is Figure 1 the view from direction A in

[0013] Figure 3 is Figure 1 the view from direction B in

[0014] Figure 4 is Figure 1 the view from direction C in

[0015] Figure 5 is Figure 4 the cross-sectional view taken along line D-D in

[0016] Figure 6 is a schematic diagram of the processing flow of the present utility model;

[0017] Figure 7 This is the state diagram when the bushing of the present utility model is processed.

[0018] 1 - In the figure: processing part; 2 - fixing part; 3 - vertical outer wall; 4 - processing platform; 5 - bushing accommodation cavity; 6 - chip removal hole; 7 - bushing; 8 - fastening bolt; 9 - anti - slip plane. Specific embodiments

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and are not used to limit the scope of protection of the claims.

[0020] As Figures 1 to 7 Collectively shown, the bushing milling and drilling tooling includes a base. The base includes a processing part 1 and a fixing part 2 which are integrally arranged up and down. The fixing part 2 facilitates fixing the tooling. A vertical outer wall 3 is provided on the outer peripheral surface of the processing part 1. A processing platform 4 is provided on the upper surface of the processing part 1. A rectangular bushing accommodation cavity 5 extending downward is opened on the processing platform 4. A chip removal hole 6 extending into the interior of the fixing part 2 is provided on the bottom wall of the bushing accommodation cavity 5. Threaded holes extending into the bushing accommodation cavity 5 are provided on both sides through the vertical outer wall 3, and fastening bolts 8 are installed in the threaded holes. When processing the bushing 7, first place the bushing 7 to be processed into the bushing accommodation cavity 5. At this time, the front, back, left, and right four side walls and the bottom wall of the bushing accommodation cavity 5 are respectively tangent or in contact with the bushing 7. The top of the bushing 7 extends out of the bushing accommodation cavity 5. At this time, tighten the fastening bolt 8 to firmly fix the bushing 7 in the bushing accommodation cavity 5. The cutting tool controls the distance a from the processing platform 4 through the numerical control machine tool. As Figure 6 shown, this distance a is also the height of the part that needs to be cut off from the bushing 7. After processing the top end of the bushing 7, turn the bushing 7 upside down with the bottom facing up. At this time, the top plane of the processed bushing 7 is in contact with the bottom surface of the bushing accommodation cavity 5. The part of the bushing 7 that extends out of the bushing accommodation cavity 5 at the bottom is the bottom part to be cut off next. At this time, the numerical control machine tool controls the cutting tool to cut the bottom of the bushing 7 along the processing platform 4, and then the numerical control machine tool controls the drill bit to drill holes in the centers of the processed bottom plane and top plane in sequence. The chip removal hole 6 can provide enough avoidance space for the drill bit. After the drilling is completed, the bushing 7 is processed. Unscrew the fastening bolt 8 and take out the processed bushing 7. The present utility model can quickly and accurately position the bushing 7, and then perform cutting and drilling, with high processing accuracy and improved processing efficiency.

[0021] AsFigure 7 As shown, the length of the bushing receiving cavity 5 is equal to the outer diameter of the bushing 7, the width of the bushing receiving cavity 5 is equal to the thickness of the bushing 7, and the height of the bushing receiving cavity 5 is equal to the height of the finished bushing 7. When the bushing 7 to be processed is first placed into the bushing receiving cavity 5, its front, back, left, right, and bottom are all in contact with the bushing receiving cavity 5, in order to perform more accurate positioning and prepare for subsequent cutting. Moreover, the height by which the bushing 7 extends out of the bushing receiving cavity 5 is also set according to the height to be cut.

[0022] As Figure 5 and Figure 6 jointly shown, the height of the central axis of the threaded hole is equal to half of the height of the bushing receiving cavity 5, the diameter of the threaded hole is smaller than the wall thickness of the bushing 7, and the distance from the central axis of the threaded hole to the inner wall of the bushing receiving cavity 5 is equal to half of the wall thickness of the bushing 7. The position of the threaded hole is set to enable the fastening bolt 8 to have a larger contact area with the bushing 7 and make it more firmly fixed. Preferably, there is one threaded hole on each of the left and right sides, and of course, the number can be appropriately increased to make the fixation more firm.

[0023] As Figure 5 shown, the end of the fastening bolt 8 is provided with an anti-slip plane 9. The end of the fastening bolt 8 is subjected to anti-slip treatment, which further strengthens the connection tightness between the fastening bolt 8 and the bushing 7 and ensures the stability during processing.

[0024] As Figure 3 and Figure 6 shown, the chip discharge hole 6 is located at the center of the bottom wall of the bushing receiving cavity 5, and the diameter of the chip discharge hole 6 is larger than the diameter of the processing hole of the bushing 7. The chip discharge hole 6 is for chip discharge on the one hand, and can avoid the processing drill bit on the other hand. Additionally, its shape can be a round hole, a square hole, or other polygonal holes.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] Only some exemplary embodiments of the present utility model have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as a limitation to the scope of protection of the claims of the present utility model.

Claims

1. A bushing milling and drilling tooling, characterized in that: It includes a processing part (1) and a fixing part (2) which are integrally arranged up and down. A vertical outer wall (3) is provided on the outer peripheral surface of the processing part (1). A processing platform (4) is provided on the upper surface of the processing part (1). A rectangular bushing receiving cavity (5) extending downward is formed on the processing platform (4). A chip discharging hole (6) penetrating through the fixing part (2) is provided on the bottom wall of the bushing receiving cavity (5). Threaded holes extending into the bushing receiving cavity (5) are provided on both sides of the vertical outer wall (3) in a penetrating manner, and fastening bolts (8) are installed in the threaded holes.

2. The bushing milling and drilling tooling according to claim 1, wherein: The length of the bushing receiving cavity (5) is equal to the outer diameter of the bushing (7), the width of the bushing receiving cavity (5) is equal to the thickness of the bushing (7), and the height of the bushing receiving cavity (5) is equal to the height of the finished bushing (7).

3. The bushing milling and drilling tooling according to claim 1, wherein: The height of the central axis of the threaded hole is equal to half of the height of the bushing receiving cavity (5). The diameter of the threaded hole is smaller than the wall thickness of the bushing (7). The distance from the central axis of the threaded hole to the inner wall of the bushing receiving cavity (5) is equal to half of the wall thickness of the bushing (7).

4. The bushing milling and drilling tooling according to claim 1, wherein: An anti-slip plane (9) is provided at the end of the fastening bolt (8).

5. The bushing milling and drilling tooling according to any one of claims 1 to 4, characterized in that: The chip discharging hole (6) is located at the center of the bottom wall of the bushing receiving cavity (5), and the diameter of the chip discharging hole (6) is larger than the diameter of the processing hole of the bushing (7).

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