Self-fastening type shaft head end face drilling tool
The self-tightening shaft head end face drilling tool realizes the selection and fixation of hole positions without marking through the combination of the main template and the hole cover plate, solving the problem of cumbersome processing of the traditional reel shaft end face and improving efficiency and product quality.
Patent Information
- Application Number
- CN202422297659.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The screw holes on the end surface of the traditional reel shaft are cumbersome and need to mark each hole position, which is inefficient and vulnerable to damage the processed surface.
The self-tightening shaft head end surface drilling tool is adopted, and the main template, hole cover plate and expansion structure are used to adjust the position of the hollow area through the rotation of the hole cover plate, so as to select and fix the hole position without marking, and easily disassemble with the loose mold screw.
Improve processing efficiency, ensure the consistency of hole position and product quality, avoid marking damage, and simplify the operation process.
Smart Images
Figure CN223070480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of drums, in particular to the field of the process manufacturing of the screw holes on the end face of a drum shaft. Background Art
[0002] A drum is a common component. Generally, a plurality of screw holes distributed circumferentially are provided on the end face of a drum shaft. The traditional processing method is to first draw lines to mark the central positions of the screw holes on the end face, and then drill the bottom holes of the screw holes according to the marked positions. This manufacturing method requires drawing lines before drilling each end face of the drum shaft head, which is rather cumbersome. Summary of the Utility Model
[0003] An object of the utility model is to provide a self-fastening drilling tool for the end face of a shaft head, which can improve the processing efficiency and has universality.
[0004] The self-fastening drilling tool for the end face of a shaft head for realizing the above object is used for hole processing on the end face of a drum shaft. Blind holes are provided on the end face of the shaft. The tool includes a main template, a hole shielding plate, a tightening structure and a mold releasing screw. The main template includes a first side and a second side. The first side is used for abuting against the end face of the shaft and also includes through holes distributed circumferentially. The hole shielding plate is coaxially arranged with the main template and rotatably arranged on the second side of the main template. The hole shielding plate includes a hollow area. The hole shielding plate is used for adjusting the position of the hollow area by virtue of its own rotation angle, so as to control the opening or closing of the through holes. The tightening structure is arranged on the first side and is used for inserting into the blind holes and expanding to be tightened, so that the tool is fixed on the end face of the shaft. The mold releasing screw is threadedly connected with the main template and the hole shielding plate and extends into the blind holes. By means of the abutting force of the bottom of the screw against the bottom face of the blind holes, the tool is separated from the end face of the shaft.
[0005] In one or more embodiments, the tightening structure includes at least a pair of tooth-shaped parts symmetrically arranged along the axis of the main template. At least a pair of the tooth-shaped parts are closely attached to the inner peripheral wall surface of the blind holes, so that the tool is tightened and fixed on the end face of the shaft.
[0006] In one or more embodiments, the outer diameter defined by a plurality of the tooth-shaped parts distributed circumferentially is larger than the inner diameter of the blind holes.
[0007] In one or more embodiments, the tooth-shaped parts include protruding structures extending along the radial direction of the main template.
[0008] In one or more embodiments, through holes with different radial positions and different sizes are provided on the main template. The hole shielding plate is used for adjusting the position of the hollow area by virtue of its own rotation angle, so as to select the opening or closing of different through holes.
[0009] In one or more embodiments, the hollow area is a notch missing from the outer edge surface of the hole shielding plate.
[0010] In one or more embodiments, the hollowed-out area is a hollow hole.
[0011] In one or more embodiments, the hollowed-out areas are arranged uniformly in the circumferential direction.
[0012] In one or more embodiments, the tool further includes a pressing member, and holes for cooperating with the pressing member are provided in the non-hollowed-out area of the hole-blocking plate for pressing the hole-blocking plate against the main template.
[0013] In one or more embodiments, the first side further includes a recessed portion sunken in the direction of the second side, at least a part of the recessed portion faces the blind hole, and one end of the expansion structure is located in the recessed portion.
[0014] By virtue of the relative position change between the hollowed-out area on the hole-blocking plate and the through hole on the main template, the above self-fastening type shaft end face drilling tool can select different specifications of hole positions on the template through rotation of the position without scribing, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and other features, properties, and advantages of the present utility model will become more apparent from the following description in conjunction with the drawings and embodiments, where:
[0016] Figure 1 is a top view of an embodiment of the self-fastening type shaft end face drilling tool;
[0017] Figure 2 is a side sectional view of an embodiment of the self-fastening type shaft end face drilling tool;
[0018] Figure 3 is a top view of an embodiment of the main template;
[0019] Figure 4 is a side sectional view of an embodiment of the main template;
[0020] Figure 5 is an enlarged view of the toothed member;
[0021] Figure 6 is a bottom view of the main template;
[0022] Figure 7 is a top view of an embodiment of the hole-blocking plate;
[0023] Figure 8 is a side view of the hole-blocking plate;
[0024] Figure 9 is a schematic diagram of the mold-release screw;
[0025] Figure 10It is the top view of the loose die screw;
[0026] Figure 11 It is a schematic diagram of the self - tightening shaft - end face drilling tool and the shaft end face of the drum in a mating state. Specific embodiments
[0027] The following further illustrates the present utility model in conjunction with specific embodiments and the accompanying drawings. More details are elaborated in the following description for a full understanding of the present utility model. However, the present utility model can obviously be implemented in many other ways different from this description. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without violating the connotation of the present utility model. Therefore, the protection scope of the present utility model should not be limited by the content of this specific embodiment.
[0028] It should be noted that these and subsequent other drawings are only examples, and they are not drawn under the condition of equal proportion, and should not be used to limit the actual required protection scope of the present utility model.
[0029] The sizes of the screw holes on the drum end face, such as the number, size, and center distance of the screw holes, are consistent for drums of the same specification, and there is also a possibility of consistency for drums of different specifications. For example, there are only two specifications for the drum of the rubber - tired gantry crane.
[0030] Considering that the processing method of the screw holes on the shaft end face of the drum is relatively cumbersome, a self - tightening shaft - end face drilling template is proposed. As shown in Figure 1 , 2 and Figure 11 , the self - tightening shaft - end face drilling tool 20 is used for hole processing on the shaft end face of the drum 10. There is a blind hole 12 on the shaft end face. The self - tightening shaft - end face drilling tool 20 includes a main template 21, a hole - covering plate 22, a tightening structure 23, and a loose die screw 24.
[0031] The main template 21 includes a first side 211 and a second side 212. The first side 211 is used to abut against the shaft end face of the drum 10, and also includes through - holes 25 distributed circumferentially. At least part of the through - holes 25 overlap with the hole positions to be processed on the shaft end face, playing a positioning role during drilling.
[0032] The hole - covering plate 22 is coaxially arranged with the main template 21 and rotatably arranged on the second side 212 of the main template 21, covering part of the main template 21, and includes a hollowed - out area 26. The hollowed - out areas 26 are evenly arranged circumferentially. By rotating, the non - hollowed - out areas between the hollowed - out areas 26 can cover the through - holes 25 on the main template 21 that are not needed.
[0033] In one embodiment, the hollowed-out area 26 is a notch missing from the outer edge surface of the hole-blocking plate. In other embodiments, the hollowed-out area can also be a hollowed-out hole provided on the plate. The hole-blocking plate 22 is used to adjust the position of the hollowed-out area 26 by virtue of its own rotation angle, thereby controlling the opening or closing of the through hole 25. When the through hole 25 is in the open state, a drilling tool is inserted into the through hole 25 to process the hole on the axial end face.
[0034] The main template 21 can be provided with through holes 25 at different radial positions and of different sizes. The hole-blocking plate 22 is used to adjust the position of the hollowed-out area 26 by virtue of its own rotation angle, thereby selecting the opening or closing of through holes 25 of different specifications, and playing the role of selecting different specifications of hole positions for processing. For example, after rotating the hole-blocking plate by 45°, it can be used for processing the bottom hole of another specification of screw hole.
[0035] After determining the relative positions of the main template 21 and the hole-blocking plate 22, in order to ensure that the two do not move relatively, the tool is also provided with a pressing member 27. The non-hollowed-out area of the hole-blocking plate 22 is provided with a hole 270 that cooperates with the pressing member 27, and the pressing member 27 is used to press the hole-blocking plate 22 against the main template 21.
[0036] The expansion structure 23, as a fastening and positioning component of the workpiece, is arranged on the first side 211 of the main template 21 and is used to be inserted into the blind hole 12 and expand to fix the whole tool on the axial end face. The first side 211 includes a sunken portion 213 that sinks in the direction of the second side. At least part of the sunken portion 213 faces the blind hole 12, and one end of the expansion structure 23 is located in the sunken portion 213, as Figure 4 shown.
[0037] In some embodiments, the expansion structure includes at least a pair of tooth-shaped members 230 symmetrically arranged along the axis S of the main template 21. The tooth-shaped members 230 have a certain taper, and at least a pair of tooth-shaped members 230 are in close contact with the inner peripheral wall surface of the blind hole to expand and fix the tool on the axial end face.
[0038] Preferably, the outer diameter D defined by a plurality of circumferentially distributed tooth-shaped members 230 is greater than the inner diameter of the blind hole 12, achieving a partial interference effect, thereby expanding and fixing the tooth-shaped members 230 on the inner peripheral surface of the blind hole 12 to achieve fixation, as Figure 4 and Figure 11 shown.
[0039] Furthermore, as Figure 5 shown, the tooth-shaped member includes a convex structure 231 extending in the radial direction of the main template, which plays the role of increasing the outer diameter D and also helps to expand and fix on the inner peripheral surface of the blind hole 12.
[0040] The drilling tool further includes a mold-release screw 24, which is threadedly connected to the main template 21 and the hole-blocking plate 22 and extends into the blind hole 12. Threaded holes 240 that cooperate with the mold-release screw 24 are respectively formed in the main template 21 and the hole-blocking plate 22. During normal drilling, the lower end of the mold-release screw 24 extends into the blind hole 12 but does not abut against the bottom surface of the blind hole or only touches it. When the drilling template needs to be disassembled, the mold-release screw 24 is rotated, and by means of the pressing force of the screw bottom against the bottom surface of the blind hole, the tool is ejected from the blind hole at the end face of the drum shaft head, separating the tool from the shaft end face.
[0041] When using this drilling tool, align the expansion structure on the template with the blind hole at the end face of the drum shaft head. After pressing it tightly, knock it in with a wooden mallet to fix the tool on the drum. Drill the end face of the drum shaft head according to the through holes on the template. After drilling, rotate the mold-release screw to eject the tool from the end face of the drum shaft head. When it is necessary to change the drilling specification, rotate the hole-blocking plate to change the position of the open through hole, or when it is necessary to limit the number of drilled holes, rotate the hole-blocking plate and use the non-perforated area to shield the through holes that do not need to be used.
[0042] The above tool has the following advantages:
[0043] (1) This tool can eliminate the scribing process before drilling each drum shaft head end face, significantly improving production efficiency. By rotating the position of the hole-blocking plate covering the surface of the main template, different specifications of hole positions on the template can be selected, which is simple and convenient to use, ensuring a high degree of consistency in the position of the screw holes, improving product quality, and can also be quickly and conveniently disassembled after the template is used through the mold-release screw.
[0044] (2) The outer cylindrical surface of the drum shaft head is a bearing shoulder surface, which has been machined before drilling the end face and cannot have scratches or other damages. This kind of drilling template using self-fastening in the inner hole of the shaft end can not only improve production efficiency but also ensure that the surface of the important position of the machined drum shaft head is not damaged.
[0045] It should be noted that in the above description, words such as "first" and "second" are used to limit the components only for the convenience of distinguishing the corresponding components. Without additional declaration, the above words have no special meaning and do not represent primary or secondary, so it should not be understood as a limitation to the protection scope of this application.
[0046] At the same time, this application uses specific words to describe the embodiments of this application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification is not necessarily the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.
[0047] Although the present utility model is disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall fall within the protection scope defined by the claims of the present utility model.
Claims
1. A self-fastening end-face drilling tool for a shaft head, which is used for hole machining on the end face of a reel shaft. A blind hole is provided on the end face of the shaft. It is characterized in that, Comprising: A main template, including a first side and a second side, the first side being for abutting against the end face of the shaft, and further including through holes distributed circumferentially; A hole shielding plate, coaxially arranged with the main template and rotatably arranged on the second side of the main template, including a hollowed-out area, the hole shielding plate being for adjusting the position of the hollowed-out area by virtue of its own rotation angle, thereby controlling the opening or closing of the through holes; A tightening structure, arranged on the first side, for inserting into the blind hole and tightening, so that the tool is fixed on the end face of the shaft; and A mold release screw, threadedly connected to the main template and the hole shielding plate and extending into the blind hole, separating the tool from the end face of the shaft by means of the pressing force of the bottom of the screw against the bottom surface of the blind hole.
2. The self-fastening end-face drilling tool for the shaft head according to claim 1, characterized in that, The tightening structure includes at least a pair of toothed members symmetrically arranged along the axis of the main template, and at least a pair of the toothed members are in close contact with the inner peripheral wall surface of the blind hole, so that the tool is tightened and fixed on the end face of the shaft.
3. The self-fastening end face drilling tool for shaft heads according to claim 2, characterized in that, The outer diameter defined by a plurality of the toothed members distributed circumferentially is larger than the inner diameter of the blind hole.
4. The self-fastening axial head end face drilling tool according to claim 2, wherein, The toothed member includes a protruding structure extending in the radial direction of the main template.
5. The self-fastening shaft end drilling tool according to claim 1, characterized in that, The main template is provided with through holes at different radial positions and of different sizes, and the hole shielding plate is for adjusting the position of the hollowed-out area by virtue of its own rotation angle, thereby selecting the opening or closing of different through holes.
6. The self-fastening shaft-end face drilling tool according to claim 1, characterized in that, The hollowed-out area is a notch missing from the outer edge surface of the hole shielding plate.
7. The self-fastening end face drilling tool for the shaft head according to claim 1, characterized in that The hollowed-out area is a hollowed-out hole.
8. The self-fastening end face drilling tool for shaft heads according to claim 6 or 7, characterized in that, The hollowed-out areas are evenly arranged circumferentially.
9. The self-fastening end-face drilling tool for shaft heads according to claim 1, characterized in that, The tool further includes a pressing member, and the non-hollowed-out area of the hole shielding plate is provided with a hole for cooperating with the pressing member, for pressing the hole shielding plate onto the main template.
10. The self-tightening shaft-end face drilling tool according to claim 1, wherein The first side further includes a recessed portion sunken in the direction of the second side, at least part of the recessed portion facing the blind hole, and one end of the tightening structure is located in the recessed portion.