Product concentricity detection jig
By designing a concentricity testing fixture for products, and using a hollow rod with a threaded connection and a smooth surface as a reference, the problem of superimposed errors in the testing of short-axis workpieces was solved, achieving high-precision and high-efficiency concentricity measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOGUAN FUYANG POWDER METALLURGY CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-10
AI Technical Summary
Existing testing equipment is prone to superimposed errors when testing the concentricity of short-axis workpieces, resulting in inaccurate test results and making it difficult to meet high-precision requirements.
A product concentricity testing fixture was designed. By setting a hollow rod with a threaded connection and a smooth surface as reference objects, the fixture avoids superimposed errors caused by using the workpiece itself as a reference. A fixed clamp and a testing instrument are used for accurate measurement.
It effectively reduces errors, improves detection accuracy and work efficiency, expands the scope of application, and is suitable for workpieces with different inner diameters.
Smart Images
Figure CN224108764U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concentricity detection technical field, concretely is a product concentricity detection jig. BACKGROUND
[0002] Coaxiality is an important technical index for evaluating cylindrical workpieces, and coaxiality error directly affects the assembly and use of workpieces. However, when the measured element axis of the workpiece is particularly short, it is very difficult to evaluate its coaxiality, and coaxiality is usually used to evaluate it. Coaxiality error directly affects the matching precision and use of workpieces. The difference in concentricity of the center of the cross section is the concentricity, and the concentricity error is the offset degree of the center. Concentricity is a special form of coaxiality. When the measured element is the center (point), the hole or shaft axis on the thin workpiece, the measured axis can be regarded as a measured point, and the coaxiality of the measured axis to the reference axis is the concentricity. Therefore, the measurement of concentricity can be carried out by projection measurement.
[0003] The existing detection equipment inserts a tool in the inner hole for detection. If the inner circular surface is taken as the reference, the detection result will superimpose the concentricity error of the inner hole and the outer cylindrical surface. Therefore, a product concentricity detection jig is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a product concentricity detection jig to solve the problems in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a product concentricity detection jig, comprising a workbench,
[0006] The top end of the workbench is fixedly connected with a support seat, the left side of the support seat is fixedly connected with a connecting plate, the middle of the connecting plate is threadedly connected with a hollow rod, and one end of the hollow rod penetrates through the support seat.
[0007] Further, the left end of the hollow rod is a threaded surface, and the right end is a smooth surface. One end of the hollow rod is slidably connected with a workpiece.
[0008] Further, the top end of the support seat is threadedly connected with a threaded rod, and the bottom end of the threaded rod is in close contact with the hollow rod.
[0009] Further, the right rear of the support seat is provided with a support rod, the bottom end of the support rod is fixedly connected with a base, and the bottom end of the base is fixedly connected with the workbench.
[0010] Further, the middle of the support rod is slidably connected with a fixed clamp, and the front end of the fixed clamp is threadedly connected with a compression nut.
[0011] Further, the left side of the fixed clamp is fixedly connected with a limiting ring, and the middle of the limiting ring is rotationally connected with a limiting rod.
[0012] Further, one end of the limiting rod is fixedly connected with a connecting rod, and one end of the connecting rod is fixedly connected with a detector.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] The connecting plate is internally provided with a threaded hole and a hollow rod in threaded connection, so as to install and fix the hollow rod, facilitate installation of hollow rods with different inner diameters according to different workpieces, effectively expand the application range, facilitate insertion of the workpiece to be detected into the hollow rod, and the smooth part of the outer surface of the hollow rod serves as a reference, so that whether the workpiece to be detected meets the standard is measured, the condition that a part of the workpiece to be detected serves as a reference to cause superimposed error is avoided, error is reduced, and work efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.
[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0017] Figure 2 It is a front view structure schematic diagram of the utility model;
[0018] Figure 3 It is a front view cross-section structure schematic diagram of the utility model;
[0019] Figure 4 It is a top view structure schematic diagram of the utility model.
[0020] In the drawings: 1, workbench; 2, support seat; 3, connecting plate; 4, hollow rod; 5, workpiece; 6, threaded rod; 7, support rod; 8, fixed clamp; 9, compression nut; 10, limiting ring; 11, limiting rod; 12, connecting rod; 13, detector; 14, base. DETAILED DESCRIPTION
[0021] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the position relation or position relation based on the position relation shown in the drawing, and only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0022] In the description of the utility model, it is necessary to explain that, unless otherwise specified and limited, the terms "installation", "provided with", "connection" and the like should be broadly understood, for example, "connection", which can be fixed connection, can also be detachable connection, or integral connection;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled persons in the art without creative labor belong to the scope of protection of the utility model.
[0024] Please refer to Figures 1-4 The utility model provides a kind of product concentricity detection jig technical scheme: a kind of product concentricity detection jig, including workbench 1, the top of workbench 1 is fixedly connected with support seat 2, support seat 2's left side is fixedly connected with connecting plate 3, by being provided with connecting plate 3, connecting plate 3 is internally provided as screw hole and hollow rod 4 is screwed, in order to install fixed hollow rod 4, and it is convenient to install different inner diameter hollow rod 4 according to different workpieces 5, effectively expand the scope of application;
[0025] The middle of the connecting plate 3 is screw-connected with a hollow rod 4, by arranging the hollow rod 4, the workpiece 5 to be detected can be inserted into the hollow rod 4, the smooth part of the outer surface of the hollow rod 4 will be used as a reference, so as to measure whether the workpiece 5 to be detected meets the standard, avoids the case that the superposition error occurs by using a part of the workpiece 5 to be detected as a reference, reduces the error, effectively improves the work efficiency, one end of the hollow rod 4 penetrates the supporting seat 2, the left end of the hollow rod 4 is a threaded surface and the right end is a smooth surface, one end of the hollow rod 4 is slidingly connected with the workpiece 5, the top end of the supporting seat 2 is screw-connected with a threaded rod 6, the bottom end of the threaded rod 6 is close to the hollow rod 4, the right rear of the supporting seat 2 is provided with a supporting rod 7, the bottom end of the supporting rod 7 is fixedly connected with a base 14, the bottom end of the base 14 is fixedly connected with the workbench 1, the middle of the supporting rod 7 is slidingly connected with a fixed clamp 8, the front end of the fixed clamp 8 is screw-connected with a compression nut 9, the left side of the fixed clamp 8 is fixedly connected with a limiting ring 10, the middle of the limiting ring 10 is rotatably connected with a limiting rod 11, one end of the limiting rod 11 is fixedly connected with a connecting rod 12, one end of the connecting rod 12 is fixedly connected with a detector 13.
[0026] The utility model discloses fixed clamp 8 adopts elastic plastic to extrude to the middle, when using, according to workpiece 5 to be detected, install corresponding hollow rod 4, after workpiece 5 is inserted into hollow rod 4, adjust the position of detector 13, by setting connecting plate 3, the inside of connecting plate 3 is set to be screw hole and is screw-connected with hollow rod 4, in order to install fixed hollow rod 4, and it is convenient to install the hollow rod 4 of different inner diameter according to different workpiece 5, effectively expand the scope of application, by setting hollow rod 4, it is convenient to insert workpiece 5 to be detected into hollow rod 4, the smooth part of the outer surface of hollow rod 4 will be used as a reference, so as to measure whether workpiece 5 to be detected meets the standard, avoids the case that the superposition error occurs by using a part of workpiece 5 to be detected as a reference, reduces the error, effectively improves the work efficiency.
[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A product concentricity testing fixture, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a support base (2), and a connecting plate (3) is fixedly connected to the left side of the support base (2). A hollow rod (4) is threadedly connected to the middle of the connecting plate (3), and one end of the hollow rod (4) passes through the support base (2).
2. The product concentricity testing fixture according to claim 1, characterized in that: The hollow rod (4) has a threaded surface on the left end and a smooth surface on the right end, and a workpiece (5) is slidably connected to one end of the hollow rod (4).
3. The product concentricity testing fixture according to claim 1, characterized in that: The top of the support base (2) is threadedly connected to a threaded rod (6), and the bottom end of the threaded rod (6) is in close contact with the hollow rod (4).
4. The product concentricity testing fixture according to claim 1, characterized in that: A support rod (7) is provided on the right rear side of the support base (2). The bottom end of the support rod (7) is fixedly connected to a base (14). The bottom end of the base (14) is fixedly connected to the workbench (1).
5. A product concentricity testing fixture according to claim 4, characterized in that: The support rod (7) is slidably connected to a fixing clip (8) in the middle, and the front end of the fixing clip (8) is threadedly connected to a clamping nut (9).
6. A product concentricity testing fixture according to claim 5, characterized in that: The left side of the fixing clamp (8) is fixedly connected to a limiting ring (10), and the middle of the limiting ring (10) is rotatably connected to a limiting rod (11).
7. A product concentricity testing fixture according to claim 6, characterized in that: One end of the limiting rod (11) is fixedly connected to a connecting rod (12), and one end of the connecting rod (12) is fixedly connected to a detector (13).