Roundness measuring instrument base

Abstract

The utility model relates to a measuring instrument transition structure, in particular to a roundness measuring instrument base which comprises a transition disc and a clamping and positioning mechanism matched with the transition disc. The transition disc is installed on the roundness measuring instrument, and a workpiece to be measured is placed on the transition disc and makes contact with the upper surface of the transition disc. The tested workpiece and the transition disc are concentrically arranged, and a plurality of equally divided clamping and positioning mechanisms are arranged at the upper end of the transition disc in the direction close to the circumferential edge; the clamping and positioning mechanisms abut against the inner diameter of a workpiece or the outer diameter of the workpiece. The plurality of clamping and positioning mechanisms are jointly matched with a transition disc below the workpiece to clamp and position the workpiece; the base is simple and reasonable in structural design; the roundness measuring instrument has the universality characteristic of being suitable for products of different specifications, is wide in application range, and can improve the measuring efficiency. Meanwhile, through the design of the weight reduction structure, the weight of the roundness measuring instrument caused by the addition of the base can be reduced.

Description

Technical Field

[0001] This utility model relates to a transition structure for measuring instruments, specifically a roundness meter base, belonging to the field of roundness meter testing technology. Background Technology

[0002] A roundness meter is a precision instrument specifically used to measure the roundness error of an object's surface. It is a measuring tool that uses the rotary axis method to measure the roundness error of a workpiece.

[0003] The radius measurement method is typically used, and the machine operates in a rotary fashion. It uses a high-precision air-bearing spindle as the measurement reference. The electrical components consist of a computer, a precision circular grating sensor, and a precision inductive displacement sensor. These sensors measure angles and radial displacements, ensuring the accuracy of the angular and radial displacement values ​​of the workpiece. During measurement, the workpiece is concentrically mounted with the precision shaft system, which carries the inductive length sensor or the worktable in a precise circular motion.

[0004] In existing roundness testers for inspecting bearing workpieces, the tester itself has a workpiece chuck, but this chuck has a small clamping range, specifically as follows: Figure 4 As shown, this roundness tester cannot be used to inspect workpieces that exceed the clamping range of the chuck; it cannot meet the universal inspection requirements for different workpiece specifications. Utility Model Content

[0005] Given that the existing roundness tester has a small chuck clamping range and cannot meet the requirements for measuring large workpieces on this device, the purpose of this utility model is to provide a roundness tester base. The base has a simple and reasonable structural design and is universally applicable to products of different specifications.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a roundness tester base, comprising: a transition plate and a clamping and positioning mechanism fitted on the transition plate; the transition plate is mounted on the roundness tester, and the workpiece to be measured is placed on the transition plate and in contact with the upper surface of the transition plate; the workpiece to be measured is placed concentrically with the transition plate, and a plurality of equally divided clamping and positioning mechanisms are arranged on the upper end of the transition plate near the circumferential edge; the plurality of clamping and positioning mechanisms abut against the inner diameter or outer diameter of the workpiece;

[0007] The above-mentioned clamping and positioning mechanisms, together with the transition plate below the workpiece, form a clamping and positioning mechanism for the workpiece.

[0008] The clamping and positioning mechanism is configured to clamp and position the workpiece in two ways: several clamping and positioning mechanisms are distributed on the transition plate of the outer diameter of the workpiece to form external clamping; several clamping and positioning mechanisms are distributed on the transition plate of the inner diameter of the workpiece to form internal support tensioning; thus, the clamping and positioning mechanism can lock and position the workpiece from both the inside and outside.

[0009] The transition plate has a certain applicable range for the size of the workpiece it carries; when the external clamping method is used, the overall clamping range of the workpiece held by the clamping and positioning mechanism needs to be controlled within 300mm (overall outer diameter); if the outer diameter of the workpiece is 300mm, the external clamping method cannot be used, and the internal support tensioning clamping method needs to be used.

[0010] Furthermore, a chuck is provided at the top center of the roundness tester. The clamping diameter of the chuck is relatively small, and the clamping diameter range accounts for about half of the diameter of the upper surface of the roundness tester. Therefore, the chuck is only suitable for clamping small-sized workpieces that match its clamping range.

[0011] Furthermore, the transition plate is a circular, one-piece disc-shaped body. The center of the transition plate is provided with a central hole that matches the size of the chuck on the top of the roundness instrument. Several bolt holes are evenly provided around the edge of the central hole. During installation, the transition plate is fixedly connected to the roundness instrument by bolts passing through the bolt holes.

[0012] Furthermore, the entire circumferential area from the central hole to the outer peripheral edge of the transition disk is machined with several equally divided weight-reducing holes, which are fan-shaped.

[0013] Furthermore, the area between each pair of adjacent weight-reducing holes is a transition plate intermediate beam, and the plurality of clamping and positioning mechanisms are distributed on each transition plate intermediate beam;

[0014] Furthermore, each clamping and positioning mechanism includes: a clamping component and a bolt; the clamping component is a cuboid structure with an internal elongated slot, and a bolt hole matching the bolt is opened on the intermediate beam of the transition plate corresponding to the position of the elongated slot. The bolt passes through the elongated slot of the clamping component and connects to the bolt hole of the intermediate beam of the transition plate. In use, after the inner or outer diameter of the clamping component abuts against the workpiece, the clamping component is fixed to the transition plate with bolts, thereby achieving the clamping and positioning of the workpiece.

[0015] The elongated through groove is an adjustment groove, through which the preload of the clamping component is adjusted; when adjustment is needed, the screws are loosened with a wrench, and the position of the nylon clamping block is manually adjusted to clamp the workpiece.

[0016] Furthermore, the clamping member is designed as a clamping block and a top block according to different clamping and positioning methods; the clamping block is used to clamp the workpiece in the outer diameter direction, so that the inner diameter of the clamping block contacts the outer diameter of the workpiece; the top block is used to clamp the workpiece in the inner diameter direction, so that the outer diameter of the top block contacts the inner diameter of the workpiece.

[0017] Furthermore, the clamping component is made of nylon to prevent impact damage when it comes into direct contact with the inner and outer diameters of the workpiece.

[0018] When the roundness tester base with the above structure is applied to the roundness tester, the transition plate of the base is fitted onto the chuck of the roundness tester through its central hole and fastened to the transition plate of the roundness tester with bolts. Then, the workpiece is clamped and positioned on the transition plate by several clamping and positioning mechanisms. After the workpiece is clamped, the roundness tester is used to inspect the workpiece. During the inspection process, the workpiece is clamped by the clamping and positioning mechanisms, which are fixed on the roundness tester, so that the workpiece rotates with the roundness tester.

[0019] The above describes the clamping and measurement of large workpieces. When the workpiece to be inspected is larger than the outer diameter of the roundness tester chuck, the roundness tester chuck does not need to be disassembled. The roundness tester chuck should only be disassembled when the inner diameter of the workpiece conflicts with the outer diameter of the roundness tester chuck.

[0020] When measuring small workpieces, this solution allows for direct clamping and fixing of the workpiece using the roundness tester chuck.

[0021] The beneficial effects of using this roundness meter base are:

[0022] The base structure is simple and reasonable; it has the universality characteristic of being applicable to products of different specifications, and has a wide range of applications, which can improve the measurement efficiency of the roundness meter; at the same time, through the design of the weight-reducing structure, the weight of the roundness meter caused by adding the base can be reduced. Attached Figure Description

[0023] Figure 1 This is an assembly structure diagram of the roundness meter base of this utility model.

[0024] Figure 2 This is a side view of the roundness meter base assembly of this utility model.

[0025] Figure 3 This is a diagram illustrating another clamping and positioning method of the clamping and positioning mechanism of this utility model.

[0026] Figure 4 This is a schematic diagram of the original roundness tester's workpiece clamping method.

[0027] In the figure, 1. Transition plate, 2. Roundness tester, 3. Workpiece to be measured, 4. Chuck, 1.1. Center hole, 1.2. Weight reduction hole, 1.3. Transition plate intermediate beam, 1.4. Bolt hole, 5. Clamping component, 6. Bolt, 5.1. Long through groove. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] like Figure 1 , 2 The roundness tester base shown in one embodiment includes two parts: a transition plate 1 and a clamping and positioning mechanism that mates with the transition plate 1; the transition plate 1 is mounted on the roundness tester 2, and the workpiece 3 to be measured is placed on the transition plate 1 and in contact with the upper surface of the transition plate 1; the workpiece 3 to be measured is placed concentrically with the transition plate 1, and a plurality of equally spaced clamping and positioning mechanisms are provided on the upper end of the transition plate 1 near the circumferential edge; the plurality of clamping and positioning mechanisms abut against the outer diameter of the workpiece;

[0030] The above-mentioned clamping and positioning mechanisms, together with the transition plate 3 below the workpiece, form a clamping and positioning mechanism for the workpiece.

[0031] The clamping and positioning mechanism is configured to clamp and position the workpiece in two ways; several clamping and positioning mechanisms are distributed on the transition plate 1 of the outer diameter of the workpiece to form external clamping.

[0032] The roundness tester 2 is provided with a chuck 4 at the top center. The clamping diameter of the chuck 4 is relatively small, and the clamping diameter range is about half of the diameter of the upper surface of the roundness tester 2. Therefore, the chuck 4 is only suitable for clamping small-sized workpieces that match its clamping range.

[0033] The transition plate 1 is a circular, integrated disc. The center of the transition plate 1 is provided with a central hole 1.1 that matches the size of the chuck 4 on the top of the roundness instrument 2. Several bolt holes 1.4 are evenly provided around the edge of the central hole 1.1. During installation, the transition plate 1 is fixedly connected to the roundness instrument 2 by bolts passing through the bolt holes 1.4.

[0034] The entire circumferential area from the center hole 1.1 of the transition plate to the outer peripheral edge is machined with several equally divided weight-reducing holes 1.2. The weight-reducing holes 1.2 are fan-shaped structures. The design of the weight-reducing holes 1.2 can reduce the weight brought by the addition of the transition plate 1 to the roundness instrument 2. The design of the weight-reducing holes 1.2 is to ensure that the transition plate 1 can support the weight of the workpiece 3 while reducing the weight of the transition plate 1 itself.

[0035] The area between each pair of adjacent weight-reducing holes 1.2 is the intermediate beam 1.3 of the transition plate, and the plurality of clamping and positioning mechanisms are distributed on each intermediate beam 1.3 of the transition plate;

[0036] In this embodiment, the transition plate 1 is designed with a six-part clamping and positioning mechanism layout, that is, the six clamping and positioning mechanisms are set in the area of ​​the intermediate beam 1.3 of the transition plate formed by the six adjacent weight reduction holes 1.2.

[0037] Each clamping and positioning mechanism includes: a clamping component 5 and a bolt 6; the clamping component 5 is a cuboid structure with an internal elongated through groove 5.1, and a bolt hole matching the bolt 6 is opened on the intermediate beam 1.3 of the transition plate corresponding to the position of the elongated through groove 5.1. The bolt 6 passes through the elongated through groove 5.1 of the clamping component 5 and connects to the bolt hole of the intermediate beam 1.3 of the transition plate; in use, after the inner diameter of the clamping component 5 abuts against the workpiece, the clamping component 5 is fixed on the transition plate 1 with the bolt 6, thereby achieving the clamping and positioning of the workpiece 3;

[0038] The elongated through groove 5.1 is an adjustment groove, through which the preload of the clamping member 5 is adjusted;

[0039] The clamping member 5 is designed as a clamping block and a top block according to different clamping and positioning methods; the clamping block is used to clamp the workpiece 6 in the outer diameter direction, so that the inner diameter of the clamping block contacts the outer diameter of the workpiece 3; the top block is used to clamp the workpiece 3 in the inner diameter direction, so that the outer diameter of the top block contacts the inner diameter of the workpiece 3. In this embodiment, the clamping block is used. Figure 3 In another embodiment, the clamping element is a top block;

[0040] The clamping member 5 is made of nylon to prevent it from being bumped or damaged when it comes into direct contact with the outer diameter of the workpiece 3.

[0041] When the roundness tester base with the above structure is applied to the roundness tester 2, the transition plate 1 of the base is fitted onto the chuck 4 of the roundness tester 2 through its central hole 1.1, and is fastened to the transition plate of the roundness tester with bolts. Then, the workpiece 3 is clamped and positioned on the transition plate 1 by several clamping and positioning mechanisms. After the workpiece 3 is clamped, the workpiece is inspected by the roundness tester 2.

[0042] The above describes the clamping and measurement of large workpieces. When the workpiece 3 to be tested is larger than the outer diameter of the roundness tester 2 chuck 4, the roundness tester chuck 4 does not need to be disassembled. The roundness tester chuck 4 is only removed when the inner diameter of the workpiece conflicts with the outer diameter of the roundness tester chuck 4.

[0043] In another embodiment of this solution, when measuring small workpieces, the workpiece can be directly clamped and fixed by the roundness tester chuck 4.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A roundness meter base, characterized in that, include: The instrument consists of two parts: a transition plate and a clamping and positioning mechanism that mates with the transition plate. The transition plate is mounted on a roundness tester, and the workpiece to be measured is placed on the transition plate and in contact with the upper surface of the transition plate. The workpiece to be measured is placed concentrically with the transition plate, and several equally divided clamping and positioning mechanisms are arranged on the upper end of the transition plate near the circumferential edge. The several clamping and positioning mechanisms abut against the inner diameter or outer diameter of the workpiece.

2. A roundness meter base according to claim 1, characterized in that: The clamping and positioning mechanism is configured to provide two clamping and positioning methods for the workpiece; several clamping and positioning mechanisms are distributed on the transition plate of the outer diameter of the workpiece to form external clamping; several clamping and positioning mechanisms are distributed on the transition plate of the inner diameter of the workpiece to form internal support tensioning.

3. A roundness meter base according to claim 1, characterized in that: The roundness meter has a chuck at the top center, and the clamping diameter of the chuck is approximately half the diameter of the upper surface of the roundness meter.

4. A roundness meter base according to claim 3, characterized in that: The transition plate is a circular, one-piece disc. The center of the transition plate has a central hole that matches the size of the chuck on the top of the roundness meter. Several bolt holes are evenly distributed around the edge of the central hole. During installation, the transition plate is fixedly connected to the roundness meter by bolts passing through the bolt holes.

5. A roundness meter base according to claim 4, characterized in that: The entire circumferential area from the central hole to the outer edge of the transition disk is machined with several equally divided weight-reducing holes, which are fan-shaped.

6. A roundness meter base according to claim 5, characterized in that: The area between each pair of adjacent weight reduction holes is the intermediate beam of the transition plate, and the plurality of clamping and positioning mechanisms are distributed on each intermediate beam of the transition plate.

7. A roundness meter base according to any one of claims 1-6, characterized in that: Each clamping and positioning mechanism includes: a clamping component and a bolt; the clamping component is a cuboid structure with an internal elongated through groove, and a bolt hole matching the bolt is opened on the intermediate beam of the transition plate corresponding to the position of the elongated through groove. The bolt passes through the elongated through groove of the clamping component and connects to the bolt hole of the intermediate beam of the transition plate.

8. A roundness meter base according to claim 7, characterized in that: The clamping components are designed as clamping blocks and top blocks depending on the clamping and positioning method.

9. A roundness meter base according to claim 7, characterized in that: The clamping component is made of nylon.

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