Rotating shaft counterbore machining positioning tool

Abstract

The utility model discloses a kind of positioning tool for machining of shaft counterbore, including base, side template, upper template and front baffle, the side template is fixedly connected on base, side template is mutually symmetrical arrangement, upper template is fixedly connected on the upper end of side template, base is equipped with load seat below upper template, front baffle is located at the front end of base, the side template is equipped with several positioning holes, positioning hole is equipped with positioning pin, upper template is equipped with several processing holes and threaded hole, the threaded hole is equipped with pressing screw. Compared with prior art, the utility model can accurately position shaft, improve coaxiality of counterbore machining and perpendicularity between counterbores, effectively improve drilling efficiency and drilling quality.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically to a positioning tooling for countersunk hole machining of a rotating shaft. Background Technology

[0002] Shafts are a common structural component in the mechanical field, and various mating holes are often machined on them during use. Current methods for machining countersunk holes on shafts primarily involve first fixing the shaft, then machining a small hole on its surface, followed by machining a larger hole above the small hole to complete the countersunk hole machining. However, this method easily leads to significant deviations in the coaxiality of the large and small holes, affecting the machining quality of the countersunk hole. Furthermore, most shafts have mutually perpendicular countersunk holes on their surfaces; typical tooling can only fix the shaft, not precisely position it, thus affecting the perpendicularity between the countersunk holes.

[0003] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0004] The main purpose of this utility model is to provide a positioning fixture for countersinking of a rotating shaft, which can accurately position the rotating shaft, improve the coaxiality of the countersinking process and the perpendicularity between the countersinks, and effectively improve drilling efficiency and drilling quality.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A positioning fixture for countersunk hole machining of a rotating shaft includes a base, side templates, an upper template, and a front baffle. The side templates are fixedly connected to the base and are arranged symmetrically to each other. The upper template is fixedly connected to the upper end of the side templates. The base has a material carrier below the upper template. The front baffle is located at the front end of the base. The side templates have several positioning holes, and positioning pins pass through the positioning holes. The upper template has several machining holes and threaded holes, and pressure screws are provided in the threaded holes.

[0007] Furthermore, the spacing between the locating hole axes on the same side template is D, and the spacing between the machining hole axes is an integer multiple of D.

[0008] Furthermore, the lower end of the front baffle is provided with a connecting boss, the connecting boss is provided with a through hole for the locking screw to pass through, the base is provided with a strip hole, the upper end of the locking screw passes through the strip hole and the through hole in sequence, and the upper end of the locking screw is provided with a threaded locking nut.

[0009] Furthermore, the material carrier is provided with a material loading groove.

[0010] Furthermore, the sidewall of the material loading trough gradually slopes inward from top to bottom.

[0011] Furthermore, a wear-resistant sleeve is embedded inside the machining hole.

[0012] Furthermore, the side template is fastened to the base with screws, and the upper template is fastened to the side template with screws.

[0013] With the above structure, in use, the front baffle is first adjusted, and the shaft is placed on the material carrier so that the front end of the shaft abuts against the front baffle, thus setting the drilling position of the shaft. Then, the shaft is clamped and fixed with clamping screws. Next, the shaft surface is drilled through the machining hole. During machining, the larger hole is machined first, followed by the smaller hole. This allows the machining center point of the larger hole to serve as a reference point when machining the smaller hole, providing a self-centering effect and enabling rapid tool positioning. After the countersinking is completed, the shaft is rotated 90 degrees and its position is adjusted so that the machined countersink is aligned with the side positioning hole. Then, a positioning pin is passed through the positioning hole and the countersink to position the shaft. Finally, the above countersinking steps are performed on the shaft through the machining hole again, resulting in mutually perpendicular countersinks.

[0014] Compared with existing technologies, the advantages of this new technology are that it has a simple structure and is easy to operate. It can quickly and accurately position the rotating shaft, effectively improving the coaxiality and perpendicularity between countersunk holes, and further improving drilling efficiency and drilling quality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the external structure of this utility model.

[0016] Figure 2 This is a side view of the cross-sectional structure of this utility model.

[0017] In the figure: base 1, strip hole 11, locking screw 12, locking nut 13, side template 2, positioning hole 21, positioning pin 22, upper template 3, machining hole 31, threaded hole 32, pressure screw 33, wear-resistant sleeve 34, front baffle 4, connecting boss 41, material carrier 5, material carrier groove 51. Detailed Implementation

[0018] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0019] like Figure 1As shown, a positioning fixture for countersinking a rotating shaft includes a base 1, side templates 2, an upper template 3, and a front baffle 4. The side templates 2 are fixedly connected to the base 1 by screws. Each set of side templates 2 is symmetrically arranged on the left and right sides of the base 1. In this embodiment, the base 1 has two sets of side templates 2 along the front-rear direction. The upper template 3 is fixedly connected to the upper end of the side templates 2 by screws. The base 1 has a material carrier 5 below the upper template 3, which is used to position and place the rotating shaft. The front baffle 4 is located at the front end of the base 1, and the front baffle 4 abuts against the front end face of the rotating shaft, thereby positioning the axial direction of the rotating shaft during drilling. The side templates 2 have several horizontally arranged positioning holes 21, and positioning pins 22 pass through the positioning holes 21. The upper template 3 has several vertically arranged machining holes 31 and threaded holes 32. The threaded holes 32 are equipped with pressure screws 33. By rotating the pressure screws 33 downwards, the rotating shaft on the material carrier 5 can be pressed and fixed. The structure is simple and the operation is convenient. Figure 2 As shown, the spacing between the axes of the positioning holes 21 on the same side template 2 is D, the spacing between the axes of the machining holes 31 is an integer multiple of D, and the spacing between the axes of the positioning holes 21 on different side templates 2 is also an integer multiple of D. Specifically, in this embodiment, the spacing between the axes of the machining holes 31 is twice D, and the spacing between the axis of the machining hole 31 and the axis of the nearest positioning hole 21 is half D. This ensures that the spacing between adjacent countersunk holes on the axis is equal after multiple machining operations.

[0020] In this embodiment, to facilitate adjustment of the front baffle 4, a connecting boss 41 is provided at the lower end of the front baffle 4. The connecting boss 41 has a through hole for the locking screw 12 to pass through. The base 1 has a strip hole 11, which is a countersunk hole structure and extends along the front-rear direction of the base 1. The upper end of the locking screw 12 passes through the strip hole 11 and the through hole in sequence, and the upper end of the locking screw 12 has a threaded locking nut 13. With the above structure, the position distance of the front baffle 4 can be quickly adjusted, making the operation more convenient.

[0021] In this embodiment, the material carrier 5 is fixed to the base 1 with screws, and the material carrier 5 is provided with a material loading groove 51. The side wall of the material loading groove 51 gradually slopes inward from top to bottom, making the material loading groove 51 have a "V" shape structure. This not only makes it suitable for rotating shafts of different diameters, but also improves the support strength for the rotating shaft, making the rotating shaft more secure when fixed.

[0022] In this embodiment, a wear-resistant sleeve 34 is embedded inside the machining hole 31. After prolonged use, if the inner wall of the wear-resistant sleeve 34 wears down, simply replace the wear-resistant sleeve 34, making it more convenient to use. Furthermore, the wear-resistant sleeve 34 can prevent the drill bit from wearing down the machining hole 31 during machining, reducing maintenance costs.

[0023] The working principle of this utility model is as follows: Before use, adjust the position of the front baffle 4, place the rotating shaft on the material carrier 5, and make the front end of the rotating shaft abut against the front baffle 4 to set the drilling position of the rotating shaft. Then, tighten and fix the rotating shaft with clamping screws. After that, drill the surface of the axis through the machining hole 31. During machining, the large hole is machined first and then the small hole is machined. This way, when machining the small hole, the machining center point of the large hole can be used as the reference point, which has a self-centering effect and realizes the rapid positioning of the tool. After the countersinking is completed, rotate the rotating shaft 90 degrees and adjust the position of the rotating shaft so that the machined countersinking is aligned with the positioning hole 21 on the side. Then, pass the positioning pin 22 through the positioning hole 21 and the countersinking to realize the positioning of the rotating shaft. Then, perform the above countersinking machining steps on the axis through the machining hole 31 to obtain mutually perpendicular countersinking.

[0024] Compared with existing technologies, the advantages of this new technology are that it has a simple structure and is easy to operate. It can quickly and accurately position the rotating shaft, effectively improving the coaxiality and perpendicularity between countersunk holes, and further improving drilling efficiency and drilling quality.

[0025] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A positioning fixture for machining countersunk holes in a rotating shaft, characterized in that, The device includes a base, side templates, an upper template, and a front baffle. The side templates are fixedly connected to the base and are arranged symmetrically. The upper template is fixedly connected to the upper end of the side templates. The base has a material carrier below the upper template. The front baffle is located at the front end of the base. The side templates have several positioning holes with positioning pins passing through them. The upper template has several machining holes and threaded holes with pressure screws on the threaded holes.

2. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 1, characterized in that, The spacing between the locating hole axes on the same side template is D, and the spacing between the machining hole axes is an integer multiple of D.

3. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 2, characterized in that, The lower end of the front baffle is provided with a connecting boss, and the connecting boss is provided with a through hole for the locking screw to pass through. The base is provided with a strip hole, and the upper end of the locking screw passes through the strip hole and the through hole in sequence. The upper end of the locking screw is provided with a threaded locking nut.

4. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 3, characterized in that, The material carrier is provided with a material loading trough.

5. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 4, characterized in that, The sidewalls of the material loading trough gradually slope inward from top to bottom.

6. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 1, characterized in that, The machining hole is fitted with a wear-resistant sleeve.

7. The positioning fixture for countersunk hole machining of a rotating shaft as described in claim 1, characterized in that, The side template is fastened to the base with screws, and the upper template is fastened to the side template with screws.

Images