Spherical turning clamp for shaft parts
By designing a spherical turning fixture for shaft parts and using an embedded fixing mechanism with sleeves and limit studs, the problem of vibration caused by traditional clamping methods was solved, achieving stable clamping and high-precision machining of shaft parts.
Patent Information
- Application Number
- CN202423261255.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional clamping methods are prone to vibration when machining shaft parts, resulting in low spherical flatness, poor flatness, large dimensional deviations, and low machining stability.
A spherical turning fixture for shaft parts is adopted, including a sleeve, a limiting stud, and a nut. Through embedded fixing, the clamping of the part is achieved by the cooperation of the limiting stud and the nut, thus avoiding vibration during the machining process.
It improves the machining stability of shaft parts, ensures machining accuracy and pass rate, reduces machining difficulty, and avoids scratches on parts.
Smart Images
Figure CN223811811U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of machining, and relates to a spherical surface turning clamp for shaft parts. BACKGROUND
[0002] When shaft parts such as rocker arms are machined, numerical control turning is needed to remove the extended handle of the spherical surface end and make it flat with the spherical surface. Because the overall size of the part is relatively long, the traditional clamping method is prone to cause vibration at the machining position, and the flatness of the spherical surface after the extended handle is removed is low, the flatness effect is poor, and the part size deviation occurs, and even additional processes are needed, and the machining stability is low. UTILITY MODEL CONTENTS
[0003] The utility model adopts a clamping tool for spherical surface turning of shaft parts, and the part is fixed in a whole embedded manner, so that stable clamping of shaft parts such as rocker arms is realized, machining deviation caused by vibration of the part end surface during numerical control turning is avoided, machining stability is improved, and machining qualification rate is ensured.
[0004] The utility model adopts the technical scheme that:
[0005] A spherical surface turning clamp for shaft parts is provided, which comprises a sleeve, a limiting stud and a nut.
[0006] The sleeve has a stepped cylindrical shape, and an installation cavity conforming to the shape of the shaft part is arranged in the sleeve. A rectangular step parallel to the axial direction and symmetric with each other is arranged on the large-diameter cylindrical side surface of the sleeve, and the rectangular step is perpendicular to the bottom surface of the large-diameter cylinder. A through hole is arranged at the center of the rectangular step, and an open slot is arranged on the longitudinal symmetry surface of the installation cavity on the large-diameter cylindrical side surface, and the open slot is parallel to the two rectangular steps. The limiting stud passes through the large-circle end center hole of the part and cooperates with the nut to reduce the gap width of the open slot and realize clamping of the large-circle end of the part.
[0007] Further, the opening width of the open slot is 1.5 mm.
[0008] Further, the diameter of the limiting stud is matched with the through hole at the center of the sleeve step to limit the axial displacement of the part, and the nut is matched with the limiting stud arranged in the sleeve to limit the transverse displacement of the limiting stud, and the sleeve open slot is closed to clamp the part by tightening the nut.
[0009] Further, the small-cylinder end of the sleeve is not less than 1 / 4 of the overall length of the clamp.
[0010] Further, the small-cylinder end of the sleeve is clamped by the three-jaw chuck of the lathe.
[0011] Further, part of the large-circle end of the part is exposed to the large-cylinder segment of the sleeve, and the maximum length of the exposed part is 10%-15% of the diameter of the large-circle end.
[0012] The present application has the advantages that the shaft-like part such as a rocker arm can be stably clamped, the effect of making the long handle flat with the spherical surface is good, the main part of the part is placed in the clamping tool, the part is prevented from being scratched during machining, the machining and clamping difficulty is reduced, and the machining stability is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 A structure schematic view of a shaft-like part spherical surface turning clamp;
[0014] Among them, 1: sleeve, 2: limit stud, 3: nut.
[0015] Fig. 2 It is a shaft-like part (rocker arm) schematic view.
[0016] Fig. 3 It is a shaft-like part spherical surface turning clamp after clamping a shaft-like part (rocker arm) schematic view. DETAILED DESCRIPTION
[0017] In order to better use the present application, the present application will be further described in detail below in combination with the drawings and examples.
[0018] Please refer to the drawings of the specification Figs. 1-3 The present application provides a kind of shaft-like part spherical surface turning clamp, including: sleeve 1, limit stud 2 and nut 3;The part is loaded into sleeve 1, is fixed by inserting limit stud 2, and makes sleeve 1 opening slot close locking part by nut 3.
[0019] The sleeve 1 is coaxial cylindrical structure, and two step planes are symmetrically arranged in the parallel direction of the axis of the large-diameter cylindrical side surface, the step planes intersect with the bottom surface of the large-diameter cylinder, a vertical through hole is arranged at the center of the step plane, and the size is matched with the limit stud 2;The inner hole step is processed inside the sleeve 1 according to the shape and size of the loaded part, so that the two are matched;An opening slot with a width of 1.5 mm is arranged on the large-diameter cylindrical side surface of the sleeve 1 along the central axis, and the opening slot is parallel to the two step planes.
[0020] The size of the limit stud 2 is matched with the vertical through hole on the step of the sleeve 1, the limit stud 2 is sequentially inserted into the through hole and the part, and the length of the threaded portion is sufficient to be loaded into the nut 3.
[0021] The size of the nut 3 is matched with the limit stud, after the part and the limit stud 2 are loaded into the sleeve 1, the nut 3 is loaded and tightened, so that the opening slot of the sleeve 1 is closed and clamped to the part.
[0022] 1. The overall size of the sleeve 1 and the inner hole step size are determined according to the size of the part, the part is loaded into the sleeve 1, and the long handle at the tail end of the part is matched with the through hole at the bottom of the sleeve 1;
[0023] 2, the limit stud 2 from sleeve 1 side hole into, through the part ear hole after, in the limit stud 2 the other end is equipped with nut 3 and is screwed, make sleeve 1 open slot closed clamping parts.
[0024] 3, the combined sleeve is installed on the lathe, clamping the small diameter cylindrical surface in the sleeve, and starting the lathe to process the extension handle.
[0025] Example one
[0026] In the process of machining the rocker arm part, in order to meet the clamping requirement of the previous process, the two spherical end of the part remains the extension handle, to ensure the flatness effect after the numerical control lathe removes the spherical end extension handle, the spherical end is not allowed to appear unstable vibration during turning process, the roughness requirement is 1.6 μm, the specific embodiment of the patent is described as follows:
[0027] 1, according to the size of the rocker arm part, select the limit stud with a roughness of 7.795 mm and the matching nut, and design the corresponding inner hole step size in the sleeve;
[0028] 2, the rocker arm part is installed in the sleeve, the limit stud is installed from the side rectangular step through hole, and the nut is installed at the other end and is screwed, so that the open slot of the sleeve is closed and the installed rocker arm part is clamped.
[0029] 3, the combined sleeve small diameter cylindrical end is clamped on the machine tool, the positioning and parameter setting are carried out, the machine tool is started, and the machining is completed.
[0030] The utility model realizes stable clamping and accurate positioning when the shaft part is processed by numerical control lathe, overcomes the unstable vibration of the part in the process of traditional numerical control lathe, improves the part processing stability, ensures the machining precision, is easy to realize, and provides a reliable clamping method for similar shaft part spherical turning.
[0031] The above only describes the embodiment of the utility model, but the protection scope of the utility model is not limited to this, any non-essential improvement of the utility model should be within the protection scope of the utility model.
Claims
1. A spherical turning fixture for shaft-type parts, characterized in that, Comprise: sleeve (1), limit stud (2) and nut (3); The sleeve (1) is a stepped cylindrical shape, and an installation cavity conforming to the shape of a shaft part is arranged inside. The large-diameter cylindrical side of the sleeve (1) is provided with two rectangular steps parallel to and symmetric with each other in the axial direction, and the rectangular steps are perpendicular to the bottom surface of the large-diameter cylinder. A through hole is arranged in the center of the rectangular step, and an open slot is arranged on the longitudinal symmetry surface of the installation cavity on the large-diameter cylindrical side. The open slot is parallel to the two rectangular steps. The limit stud (2) passes through the large-diameter end center hole of the part and cooperates with the nut (3) to reduce the gap width of the open slot, thereby realizing clamping of the large-diameter end of the part.
2. The shaft part spherical surface turning clamp according to claim 1, wherein The opening width of the open slot is 1.5 mm.
3. The shaft part spherical surface turning clamp according to claim 1, wherein The diameter of the limit stud (2) is matched with the step center through hole of the sleeve (1) to limit the axial displacement of the part. The nut (3) cooperates with the limit stud arranged in the sleeve (1) to limit the transverse displacement of the limit stud (2), and the sleeve (1) open slot is closed to clamp the part by tightening the nut (3).
4. The shaft part spherical surface turning clamp according to claim 1, wherein The small-cylinder end of the sleeve (1) is not less than 1 / 4 of the overall length of the clamp.
5. The shaft part spherical surface turning clamp according to claim 1, wherein The small-cylinder end of the sleeve (1) is clamped by the three-jaw chuck of the lathe.
6. The shaft part spherical surface turning clamp according to claim 1, wherein Part of the large-diameter end of the part is exposed to the large-cylinder segment of the sleeve (1), and the maximum length of the exposed part is 10%-15% of the diameter of the large-diameter end.