Multipurpose lever caliper gauge

Abstract

The utility model discloses a multipurpose lever caliper gauge, which is characterized in that a straight moving type movable screw rod and a telescopic movable measuring anvil are coaxially arranged on a U-shaped ruler frame left and right, a nut and a locking sleeve which are associated with the straight moving type movable screw rod as well as a micrometer dial gauge and a button which are associated with the telescopic movable measuring anvil are arranged on the U-shaped ruler frame; a 60-degree V-shaped positioning groove is inwards formed in the middle of the measuring end face of the straight moving type movable lead screw, and the central symmetry plane of the 60-degree V-shaped positioning groove is a horizontal plane. A dial plate of the micrometer dial gauge is provided with a pointer, roundness measuring scale values and distance measuring scale values, wherein the roundness measuring scale values and the distance measuring scale values are coaxial. According to the utility model, the 60-degree V-shaped positioning groove is arranged on the straight moving type movable screw rod of the original lever caliper gauge, and the end surface of the 60-degree V-shaped positioning groove is a flat measuring surface, so that not only is the measurement requirement of the traditional lever caliper gauge met, but also the excircle roundness of shaft parts can be directly and precisely measured through the V-shaped positioning groove.

Description

Technical Field

[0001] This utility model relates to geometric measurement tools, specifically a multi-purpose lever gauge. Background Technology

[0002] Lever calipers are a general type of micrometer-like measuring tools, and are a common type of general-purpose precision measuring tool used in geometric measurement.

[0003] In practical applications, ordinary lever gauges cannot obtain accurate measurement results for the roundness of cylindrical parts: because of the two-point measurement principle, they can only detect that the measured part may not be round, but cannot detect the non-roundness of special (such as triangular) circular parts.

[0004] While a three-groove micrometer can be used to measure the roundness of parts, the accuracy of the measurement results is relatively low. Other measurement methods cannot achieve the same level of convenience and efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention proposes a multi-purpose lever gauge that can directly and precisely measure the roundness of the outer circle of cylindrical parts.

[0006] A multi-purpose lever caliper gauge capable of solving existing technical problems includes a linearly moving movable lead screw and a telescopic movable anvil coaxially arranged on the left and right sides of a "U"-shaped frame. The "U"-shaped frame is equipped with a nut and locking sleeve connected to the linearly moving movable lead screw, and a micrometer indicator and button connected to the telescopic movable anvil. The difference lies in:

[0007] 1. A 60° “V” shaped positioning groove is provided inwardly and centrally on the measuring end face of the linear movable lead screw, and the central symmetry plane of the 60° “V” shaped positioning groove is a horizontal plane.

[0008] 2. The dial of the micrometer indicator is equipped with a pointer and coaxial inner and outer rings for measuring roundness and distance.

[0009] Furthermore, the pointer readings on the roundness scale and the distance scale are in a multiple relationship of 0.677:1.

[0010] The beneficial effects of this utility model are:

[0011] 1. The structure of this utility model multi-purpose lever gauge is based on the original lever gauge's direct-moving movable lead screw, with a 60° "V" shaped positioning groove designed. The end face of the 60° "V" shaped positioning groove is a flat measuring surface. The flat measuring surface of the 60° "V" shaped positioning groove can meet the measurement needs of traditional lever gauges and the detection of the accuracy of lever gauge indication values.

[0012] 2. Based on the original lever gauge's ability to measure geometric length, this utility model can also directly and precisely measure the roundness of the outer circle of shaft parts through a 60° "V" shaped positioning groove, making the reading quick, convenient, and reliable.

[0013] 3. When measuring length using this utility model, read the distance measurement scale value on the outer ring of the dial of the micrometer indicator; when measuring the roundness of the outer circle, read the roundness measurement scale value on the inner ring of the dial of the micrometer indicator. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0015] Figure 2 To adopt Figure 1 A schematic diagram illustrating the method for detecting the outer diameter of shaft-type parts.

[0016] Figure 3 To adopt Figure 1 A schematic diagram illustrating the method for detecting the roundness of shaft-type parts.

[0017] Figure 4(a) shows Figure 1 View A in the diagram.

[0018] Figure 4(b) shows Figure 3 View B in the diagram.

[0019] Drawing number markings: 1. "U" shaped ruler frame; 2. Linear sliding movable lead screw; 2-1. 60° "V" shaped positioning groove; 3. Telescopic movable anvil; 4. Nut; 5. Locking sleeve; 6. Micrometer indicator; 6-1. Pointer; 6-2. Roundness measurement scale value; 6-3. Distance measurement scale value; 7. Button; 8. Shaft parts; Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the embodiments shown in the accompanying drawings.

[0021] This utility model of a multi-purpose lever gauge includes a U-shaped ruler frame 1. The left side of the U-shaped ruler frame 1 is provided with a linearly movable lead screw 2, a nut 4 associated with the linearly movable lead screw 2, and a locking sleeve 5. The right side of the U-shaped ruler frame 1 is provided with a telescopic movable anvil 3, a micrometer indicator 6 associated with the telescopic movable anvil 3, and a button 7. The linearly movable lead screw 2 and the telescopic movable anvil 3 are coaxially opposite each other on the left and right sides within the U-shaped groove of the U-shaped ruler frame 1. Figure 1 , Figure 2 , Figure 3 As shown.

[0022] The dial of the micrometer indicator 6 is equipped with a pointer 6-1 and coaxial inner and outer scales for roundness measurement 6-2 and distance measurement 6-3. During measurement, the readings of the pointer 6-1 on the roundness measurement scale 6-2 and the distance measurement scale 6-3 are in a multiple relationship of 0.677:1. Figure 1 , Figure 2 , Figure 3 As shown.

[0023] A 60° "V"-shaped positioning groove 2-1 is centrally located and extends inward on the right end of the linear movable lead screw 2. The central symmetry plane of the 60° "V"-shaped positioning groove 2-1 is on a horizontal plane and perpendicular to the left end of the telescopic movable anvil 3. That is, the 60° "V"-shaped positioning groove 2-1 penetrates the linear movable lead screw 2 both forward and backward. Figure 1 , Figure 2 , Figure 3 As shown in Figure 4(a).

[0024] The method of using this utility model is as follows:

[0025] I. Measurement of the roundness of the outer circle of shaft-type parts 8, such as Figure 3 As shown in Figure 4(b):

[0026] 1. Using the 60° "V" shaped positioning groove 2-1 of the linear movable lead screw 2, place the shaft part 8 to be measured horizontally in the 60° "V" shaped positioning groove 2-1 (the right part of the shaft part 8 is exposed outside the 60° "V" shaped positioning groove 2-1). Rotate the nut 4 to push the linear movable lead screw 2, i.e. the shaft part 8, to move to the right and abut (point contact) against the left end measuring plane of the telescopic movable anvil 3, so that the pointer 6-1 of the micrometer indicator 6 rotates. When the pointer 6-1 rotates to the "0" position in the middle of the bottom of the dial, twist the locking sleeve 5 to lock the linear movable lead screw 2.

[0027] 2. Press button 7 to disengage the telescopic movable anvil 3 from the shaft part 8. After rotating the shaft part 8 by an angle, release button 7. The telescopic movable anvil 3 returns to its original position and contacts the shaft part 8. Obtain an outer roundness value of the shaft part 8 by reading the pointer 6-1 (pointer 6-1 indicates the position on the roundness scale value 6-2, deviating from the "0" position).

[0028] 3. Detect 4 to 8 points within one circumference of the shaft part 8. The difference between the maximum and minimum readings indicated by pointer 6-1 during multi-point measurement is the roundness of the shaft part 8.

[0029] II. Measurement of the outer diameter of shaft parts 8 (traditional measurement method), such as Figure 2 As shown:

[0030] The outer diameter of the shaft part 8 is detected by using a linear movable lead screw 2 with a 60° "V" shaped positioning groove 2-1. The shaft part 8 is vertically placed between the right end measuring plane of the linear movable lead screw 2 and the left end measuring plane of the telescopic movable anvil 3. The outer diameter of the shaft part 8 is obtained by reading the pointer 6-1 (the pointer 6-1 indicates the position on the measuring scale value 6-3, deviating from the "0" position).

Claims

1. A multi-purpose lever gauge, comprising a linearly movable lead screw (2) and a telescopic movable anvil (3) coaxially arranged on the left and right sides of a "U"-shaped frame (1), wherein the "U"-shaped frame (1) is provided with a nut (4) and a locking sleeve (5) associated with the linearly movable lead screw (2), and a micrometer indicator (6) and a button (7) associated with the telescopic movable anvil (3), characterized in that: The measuring end face of the linear movable lead screw (2) is provided with a 60° "V" shaped positioning groove (2-1) centered inward, and the central symmetry plane of the 60° "V" shaped positioning groove (2-1) is a horizontal plane; The dial of the micrometer indicator (6) is provided with a pointer (6-1) and coaxial roundness scale values ​​(6-2) and distance scale values ​​(6-3).

2. The multi-purpose lever gauge according to claim 1, characterized in that: The readings of the pointer (6-1) on the roundness scale (6-2) and the distance scale (6-3) are in a multiple relationship of 0.677:1.

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