CN201548149U - Large-scale outer diameter micrometer indication error verification fixture - Google Patents

Abstract

The utility model relates to clamps, in particular to a measuring tool clamp, and discloses an indication error calibration clamp of a large-size outside micrometer. The clamp comprises a scale holder (9) and a micrometer head (8) arranged in a sleeve at the upper end of the scale holder (9), wherein the sleeve at the upper end of the scale holder (9) is also provided with a base body (6) externally, the other end of the base body (6) is provided with an adjustable measuring anvil (1), and the central line of the measuring anvil (1) coincides with the central line of a micrometer head screw (5) of the micrometer head (8). According to the technical scheme, the clamp is stable in aid during the aid measurement process on a device, can meet the requirement of large-size devices with various shapes and is small in error.

Description

Large-scale outer diameter micrometer indication error verification fixture

technical field

The utility model relates to a fixture, in particular to a measuring fixture.

Background technique

Since the specification range of the special gauge block for the micrometer is: (5.12-100) mm, the verification of the indication error of the (100-2000) mm outer micrometer micrometer head requires a size equal to the lower limit of the measured outer micrometer measurement range. Gauge block, special gauge block corresponding to the measurement range (0-25) mm of the micrometer micrometer head: 5.12mm 10.24mm 15.36mm 21.50mm 25.00mm small gauge blocks are researched and combined to complete the verification of the indication error of the micrometer micrometer head . Since the grinding of the gauge block has considerable requirements on the cleaning of the measuring surface of the gauge block, and because the weight of the gauge block increases after grinding and the size is lengthened, it is very easy to cause the working surface of the gauge block to scratches, resulting in a reduction in the expected service life of the gauge block and an indirect reduction in the reliability of the verification results of the indication error of the micrometer micrometer head.

There is a kind of micrometer clamp, just as Southwest Aluminum Industry (Group) Co., Ltd. applied on May 24, 2007, and was disclosed on March 12, 2008. The application number is 200720147454.7, and the publication number is the patent of CN201034527. The name is micrometer clamp, including A base, on which a jig head is mounted and fixed, a jaw that can be inserted into the micrometer is arranged on the jig head, and a pressing device that can compress the micrometer inserted into the jaw is also arranged on the jig head. The fixture has a simple structure and can reduce the measurement error of the micrometer. Although the clamping device is added to the micrometer fixture, its structural design cannot guarantee the stability of the clamping device, which reduces the reliability of the value during measurement.

Contents of the invention

The utility model aims at the disadvantage that the micrometer clamp in the prior art cannot clamp devices of various shapes, especially devices with large sizes, and the measurement accuracy is easily affected during the clamping process. The shape device is supported, and the micrometer fixture has little influence on the accuracy.

In order to solve the above technical problems, the utility model is solved through the following technical solutions:

Large-sized outer diameter micrometer display value error verification fixture, including a ruler frame and a micrometer micrometer head installed in the upper end sleeve of the ruler frame. Measuring anvil, the centerline of the adjustable measuring anvil coincides with the centerline of the micrometer head screw rod of the micrometer micrometer head.

The ruler frame is a base with a sleeve. The sleeve of the ruler frame can just match the micrometer head of the micrometer. The measuring anvil is connected, and the adjustable measuring station and the micrometer head screw rod of the micrometer micrometer head can be matched and placed on the same horizontal line.

Preferably, one end of the base body is a sleeve matched with the top end of the ruler frame, and the other end is a vertical block through which the adjustable anvil passes.

The substrate is fixed on the ruler frame by five positioning and fastening screws.

The adjustable measuring anvil is fixed on the substrate by the adjustable measuring anvil fastening screw.

The base is placed on a flat plate. One end of the flat plate is a ring sleeve, which can be placed outside the sleeve of the ruler frame. The ring sleeve is installed on the sleeve through five positioning and fastening screws. The other end is a vertical block placed perpendicular to the flat plate. There is a circular opening on the block, and the adjustable measuring anvil is placed through the circular opening, and there is also a screw opening for placing the adjustable measuring anvil fastening screw on the agreed surface of the vertical block, for fastening the adjustable measuring anvil.

Preferably, one end of the adjustable anvil is an adjustable anvil steel ball measuring head with a ball end surface, and the special gauge block is sandwiched between the adjustable anvil steel ball measuring head and the micrometer screw.

The end corresponding to the adjustable anvil and the micrometer screw is an adjustable anvil steel ball measuring head with a spherical end face. When in use, the special gauge block is placed between the adjustable anvil steel ball measuring head and the micrometer screw. between.

According to the technical solution of the utility model, in the process of clamping and measuring devices, the clamp is stable and can meet the needs of devices with large sizes and different shapes, and the error is relatively small.

Description of drawings

Fig. 1 is the view when the embodiment of the utility model is clamped.

The names of the parts indicated by the numbers in the above drawings are as follows:

1-Adjustable measuring anvil, 2-Adjustable measuring anvil fastening screw, 3-Adjustable measuring anvil steel ball measuring head, 4-Special measuring block, 5-Micrometer head screw, 6-Base body, 7-Positioning fastening Screw, 8-micrometer micrometer head, 9-foot stand.

Detailed ways

Below in conjunction with accompanying drawing 1 and specific embodiment the utility model is described in further detail:

Embodiment According to the accompanying drawing 1, a large-scale external diameter micrometer indication error verification fixture includes a ruler frame 9 and a micrometer micrometer head 8 installed in the upper end sleeve of the ruler frame 9, and the upper end sleeve of the ruler frame 9 is also installed There is a base body 6, and the other end of the base body 6 is equipped with an adjustable measuring anvil 1, and the center line of the adjustable measuring anvil 1 coincides with the center line of the micrometer head screw 5 of the micrometer micrometer head 8. One end of the base body 6 is a sleeve matched with the top end of the ruler frame 9, and the other end is a vertically placed vertical block, and the adjustable anvil 1 passes through the vertical block. The base body 6 is fixed on the ruler frame 9 by five positioning and fastening screws 7 . The adjustable anvil 1 is fixed on the base 6 by the adjustable anvil fastening screw 2 . One end of the adjustable anvil 1 is an adjustable anvil steel ball measuring head 3 with a ball end face, and a special gauge block 4 is sandwiched between the adjustable anvil steel ball measuring head 3 and the micrometer screw rod.

Unscrew the positioning fastening screw 7 to an appropriate position, and preliminarily set the inspection tool base 6 on the sleeve of the large-size outer diameter micrometer frame 9 . Then finely adjust the five positioning fastening screws 7, so that the axis of the adjustable anvil 1 coincides with the axis of the outer micrometer screw 2, and lock the five positioning fastening screws 7; the outer micrometer micrometer head 8 is adjusted to zero, Carefully adjust the adjustable measuring anvil 1 so that the steel ball measuring head 3 of the adjustable measuring anvil is in contact with the working surface of the micrometer micrometer head screw 5, so that the zero position of the micrometer micrometer head 8 remains unchanged when the micrometer head 8 is re-aligned to zero. At this time, it can be locked. The adjustable anvil fastening screw 2 of the adjustment anvil 1. Unscrew the micrometer head 8 to the appropriate position, and put it between the working surface of the micrometer head screw 5 and the steel ball measuring head of the adjustable anvil 1 of the inspection tool in turn, and put the size specifications: 5.12mm 10.24mm 15.36mm 21.50mm 25.00mm special gauge block 4 for the micrometer, to test and read the indication error of the micrometer head 8 of the micrometer.

In a word, the above descriptions are only preferred embodiments of the present utility model, and all equal changes and modifications made according to the patent scope of the utility model should fall within the scope of the utility model patent.

Claims (5)

1. large scale outside micrometer error of indication certification jig, comprise chi frame (9) and be installed in the sleeve of chi frame (9) upper end milscale micrometer head (8), it is characterized in that: the upper end sleeve of chi frame (9) also is equipped with matrix (6) outward, an other end of matrix (6) is equipped with adjustable gage button (1), the central lines of the micrometer head screw rod (5) of the center line of adjustable gage button (1) and milscale micrometer head (8).

2. large scale outside micrometer error of indication certification jig according to claim 1 is characterized in that: an end of matrix (6) is for going up the sleeve that matches in the top with chi frame (9), and an other end is the upright piece of vertically placing, and adjustable gage button (1) passes upright piece.

3. large scale outside micrometer error of indication certification jig according to claim 1, it is characterized in that: matrix (6) is fixed on the chi frame (9) by five positioning and fastening screws (7).

4. large scale outside micrometer error of indication certification jig according to claim 1, it is characterized in that: adjustable gage button (1) is fixed on the matrix (6) by adjustable gage button clamp-screw (2).

5. large scale outside micrometer error of indication certification jig according to claim 1, it is characterized in that: an end of adjustable gage button (1) is the adjustable gage button steel ball measuring head (3) of pommel face, and special-purpose gauge block (4) is sandwiched between adjustable gage button steel ball measuring head (3) and the micrometer head screw rod.

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