Adjustable inner hole supporting and fixing device
By installing an adjustable inner hole support and fixing device at the inner hole of the assembly shaft and fixing both ends of the assembly shaft with tapered set screws, the problem of the assembly shaft moving and shifting during processing is solved, ensuring the coaxiality of the inner hole and the outer circle, and improving the processing accuracy and the balance performance of the embossing roll.
Patent Information
- Application Number
- CN202520183191.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-06
AI Technical Summary
During the assembly process, only one end of the shaft is clamped while the other end cannot be fixed, resulting in movement and displacement, which affects the coaxiality of the inner hole and the outer circle, making it difficult to ensure the balance performance of the embossing roll.
Design an adjustable internal hole support and fixing device, which is installed at the opening of the internal hole of the assembly shaft, provides a top holding point, and fixes both ends of the assembly shaft by tapered set screws, thereby eliminating positioning accuracy errors and ensuring the coaxiality of the internal hole and the outer circle.
This technology enables the assembly shaft to be fixed at both ends during processing, preventing movement and displacement, eliminating positioning accuracy errors caused by machine tool switching, and improving processing accuracy and the balance performance of the embossing roll.
Smart Images
Figure CN223889738U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of roll manufacturing technology, and particularly relates to an adjustable inner hole supporting and fixing device. BACKGROUND
[0002] The combined embossing roller is assembled by assembling shafts 6 at two ends and an embossing work roller sleeve, the inner hole diameter and depth size of the assembling shaft 6 at two ends are large, and the assembling shaft 6 belongs to a thin-walled sleeve part, as shown in the figure. Figure 1 When the two processes of finish turning and grinding are processed, one end of the assembling shaft 6 is clamped by a fixing part 8 of a lathe or a grinding machine, and the fixing part is generally a lathe chuck or a grinding machine jaw, however, the other end of the assembling shaft 6, that is, the end of the inner hole opening that needs to be clamped by the tailstock center 7, cannot be clamped, so that only one end of the assembling shaft 6 is clamped during high-speed rotation in the processes of finish turning and grinding, and the other end cannot be fixed, which causes the assembling shaft 6 to be easily affected by cutting force and to displace and move during the machining process; in addition, the assembling shaft 6 is also affected by the conversion of the positioning reference of the machine tool between processes, so that the coaxiality of the inner hole and the outer circle of the assembling shaft 6 cannot be guaranteed, and the balance performance of the embossing roller during work is easily affected. SUMMARY
[0003] The utility model provides a kind of adjustable inner hole supporting and fixing device, it is installed in the inner hole opening of assembling shaft, and it provides clamping point for tailstock center of machine tool, so that both ends of assembling shaft can be fixed during machining process, and it can prevent assembling shaft from producing movement and displacement during machining process;The outer circle of assembling shaft does not need to disassemble the device directly and is ground by numerical control grinding machine after finish turning, and the positioning accuracy error caused by machine tool conversion in the two processes of finish turning and grinding can be effectively eliminated.
[0004] To achieve the above object, the technical scheme of the utility model is as follows:
[0005] An adjustable inner hole supporting and fixing device, which comprises a main body and a stepped baffle formed by extending outward from the outer edge of the main body and used for abutting against the end surface of the assembling shaft;A positioning hole for facilitating the lifting of the tailstock center of the machine tool is arranged at the central position of the surface of the main body, and a threaded hole distributed in the radial direction is arranged inside the main body, and a tapered jack screw is installed in the threaded hole, with the outer end of the tapered jack screw abutting against the inner hole wall of the assembling shaft to play the roles of fixing and adjusting the position of the positioning hole.
[0006] The further improvement of the technical scheme of the utility model is that a threaded hole is arranged on the baffle.
[0007] The further improvement of the technical scheme of the utility model is that a weight-reducing hole is arranged between the two threaded holes on the main body.
[0008] The further improvement in the technical scheme of the utility model lies in that: the baffle is uniformly distributed along the outer edge of the main body, and the number of baffles is not less than 3.
[0009] The further improvement in the technical scheme of the utility model lies in that: the baffle is uniformly distributed along the outer edge of the main body, and the number of baffles is not less than 3.
[0010] The further improvement in the technical scheme of the utility model lies in that: the positioning hole and the threaded hole are both blind holes.
[0011] Thanks to the above technical scheme, the utility model has the following technical progress:
[0012] The utility model is installed at the inner hole opening of the assembly shaft, provides a supporting point for the lathe tailstock center, so that the assembly shaft can be fixed at both ends during the machining process, and the displacement and movement of the assembly shaft during the machining process can be prevented; the outer circle of the assembly shaft does not need to be disassembled and directly transferred to the numerical control grinding machine for fine grinding after fine turning, so that the positioning accuracy error caused by the machine tool conversion during the fine turning and grinding processes can be effectively eliminated.
[0013] The utility model adjusts the tapered jack in the threaded hole, ensures the coaxiality of the inner hole and the outer circle of the assembly shaft, and provides a rotary torque to prevent the displacement and movement of the assembly shaft caused by the cutting force.
[0014] The two threaded holes in the main body are provided with weight reduction holes, so that the weight of the main body is reduced, the operator can operate more conveniently and quickly, and the cost is reduced.
[0015] The baffle is uniformly distributed along the outer edge of the main body, and the number of baffles is not less than 3. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is the original assembly shaft machining schematic diagram;
[0017] Figure 2 is the structure schematic diagram of the utility model;
[0018] Figure 3 is Figure 2 A view after cutting along the dotted line;
[0019] Figure 4 is the sectional view of the utility model in use;
[0020] Wherein, 1, baffle; 2, through hole; 3, threaded hole; 4, weight reduction hole; 5, positioning hole; 6, assembly shaft; 7, lathe tailstock center; 8, fixing piece; 9, main body; 10, connecting plate; 11, supporting plate; 12, positioning plate. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to embodiments:
[0022] like Figures 2-4 As shown, an adjustable internal hole support and fixing device includes a baffle 1, a through hole 2, a threaded hole 3, a weight reduction hole 4, a positioning hole 5, a main body 9, a connecting plate 10, a support plate 11, and a positioning plate 12.
[0023] This utility model includes a main body 9 and a baffle 1 extending outward from the outer edge of the main body 9. The baffle 1 is stepped, and from the inside to the outside, the baffle 1 consists of a positioning plate 12 and a support plate 11. The support plate 11 is used to abut against the end face of the assembly shaft 6. A positioning hole 5 is provided at the center of the surface of the main body 9 to facilitate the lifting of the tailstock center 7 of the machine tool, so that both ends of the assembly shaft 6 can be fixed during the processing, which can prevent the assembly shaft 6 from moving or shifting during the processing. The main body 9 has radially distributed threaded holes 3 inside, and a tapered set screw is installed in the threaded holes 3. The outer end of the tapered set screw abuts against the inner wall of the assembly shaft 6. After the outer circle of the assembly shaft 6 is precision turned, it can be directly rotated to a CNC grinding machine for precision grinding without disassembling this device. This can effectively eliminate the positioning accuracy error caused by the machine tool conversion between the precision turning and grinding processes. By adjusting the tapered set screw, the coaxiality of the inner hole and the outer circle of the assembly shaft 6 is ensured and the rotation torque is provided to prevent the assembly shaft 6 from shifting or moving due to the cutting force.
[0024] In one embodiment of this utility model, a weight-reducing hole 4 is provided between the two threaded holes 3 on the main body 9, which reduces its own weight, making it easier and faster for workers to operate, and reducing the cost.
[0025] In one embodiment of this utility model, a connecting plate 10 connected to the main body 9 is provided on the baffle 1. The angle between the inclined surface of the connecting plate 10 and the horizontal plane of the main body 9 is 135 degrees, which improves the rigidity of the baffle 1 and avoids deformation or damage during use.
[0026] Instructions for use: When using this utility model, first screw a tapered set screw into the threaded hole 3, then place the support plate 11 against the end face of the assembly shaft 6. Next, lift the assembly shaft 6 using the machine tool tailstock center 7 and positioning hole 5. Adjust the pre-embedded tapered set screw with a wrench to ensure the coaxiality of the inner hole and outer circle of the assembly shaft 6. After the lathe is finished, the device can be directly transferred to the grinding machine without disassembling it, effectively eliminating the positioning accuracy error caused by the machine tool conversion between the two processes.
[0027] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.
Claims
1. An adjustable internal hole support and fixing device, characterized in that: Includes a main body (9) and a stepped baffle (1) extending outward from the outer edge of the main body (9) to abut against the end face of the assembly shaft (6); the main body (9) has a positioning hole (5) at the center of its surface to facilitate the lifting of the machine tool tailstock center (7), and has a radially distributed threaded hole (3) inside; a tapered set screw is installed in the threaded hole (3) with its outer end abutting against the inner wall of the assembly shaft (6) to fix and adjust the position of the positioning hole (5).
2. The adjustable internal hole support and fixing device according to claim 1, characterized in that: The baffle (1) is provided with a threaded through hole (2).
3. The adjustable internal hole support and fixing device according to claim 1, characterized in that: A weight-reducing hole (4) is provided between the two threaded holes (3) on the main body (9).
4. The adjustable internal hole support and fixing device according to claim 1, characterized in that: The baffle (1) is provided with a connecting plate (10) connected to the main body (9), and the angle between the inclined surface of the connecting plate (10) and the horizontal surface of the main body (9) is 135 degrees.
5. The adjustable internal hole support and fixing device according to claim 1, characterized in that: The baffles (1) are evenly distributed along the outer edge of the main body, and there are no fewer than 3 of them.
6. The adjustable internal hole support and fixing device according to claim 1, characterized in that: Both the positioning hole (5) and the threaded hole (3) are blind holes.