Calibration device for center distance caliper with measuring jaw having height difference

Abstract

A calibration device for a center distance caliper with a measuring jaw having a height difference comprises a calibration platform, one end of the calibration platform is provided with a worm gear and worm elevator, and a lifting screw of the worm gear and worm elevator is connected with a measuring table A; the calibration platform is provided with a ball screw, a measuring table B is fixedly installed on a sliding table of the ball screw, the measuring table B and the measuring table A are oppositely arranged, and the measuring table B is driven by the ball screw to move in the length direction of the calibration platform; the surfaces of the measuring table A and the measuring table B are respectively provided with measuring holes, and the center connecting line of the measuring holes in the measuring table A and the measuring holes in the measuring table B is parallel to the length direction of the calibration platform; and spiral supporting legs are mounted at the bottom of the calibration platform. In the process of calibrating the center distance caliper with the measuring jaws having the height difference, the height of the measuring table A can be adjusted through the worm and gear elevator, so that the height difference between the two measuring jaws in the measuring process is compensated, and the calibration precision of the center distance caliper with the measuring jaws having the height difference is improved.

Description

Technical Field

[0001] This utility model relates to the field of calibration devices, and in particular to a calibration device for a center distance caliper with a height difference between the measuring jaws. Background Technology

[0002] The calibration of the indication error of center distance calipers generally uses a standard orifice plate with a fixed center hole distance to reproduce the center distance between multiple circular holes. Commonly used center distance caliper calibration devices, using combined standard blocks, can only provide a few fixed standard values; the calibration points are fixed and cannot provide more calibration points, thus limiting the application environment. To address this, Chinese Patent No. CN222298649U provides a center distance caliper calibration device. This device can form concave measuring orifices of different measurement lengths by cooperating with measuring blocks and clamping blocks on a two-dimensional scale, thereby providing multiple calibration points for center distance caliper calibration. However, when the measuring jaws of the center distance caliper have a height difference, this type of calibration device still cannot solve the height difference caused by the inconsistency between the heights of the two measuring jaws of the caliper being calibrated. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a center distance caliper calibration device for measuring jaws with height differences, so as to solve the technical problems involved in the background art.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A calibration device for center distance calipers with height differences in the jaws includes a calibration platform. A worm gear jack is installed at one end of the calibration platform, and a measuring stage A is connected to the lifting screw of the worm gear jack. A ball screw is installed on the calibration platform, and a measuring stage B is fixedly mounted on the slide of the ball screw. The measuring stage B is positioned opposite to the measuring stage A, and moves along the length of the calibration platform under the drive of the ball screw. Measuring holes are respectively provided on the surfaces of measuring stages A and B, and the line connecting the centers of the measuring holes on measuring stages A and B is parallel to the length of the calibration platform. A spiral support foot is installed at the bottom of the calibration platform for adjusting its levelness.

[0006] Furthermore, in the above-mentioned utility model, the worm gear jack controls the rotation of the worm through handwheel A; the ball screw controls the rotation of the screw through handwheel B.

[0007] Furthermore, in the above-mentioned utility model, the measuring orifice includes two sets of measuring orifices with different diameters; one set of measuring orifices has a diameter of 5mm, and the other set of measuring orifices has a diameter of 10mm.

[0008] Furthermore, in the above-described utility model, the calibration platform is equipped with a bubble level.

[0009] Furthermore, in the above-mentioned utility model, a scale is installed on the side of the calibration platform.

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

[0011] In the process of calibrating a center distance caliper with a height difference between the measuring jaws, this invention can adjust the height of the measuring platform A by using a worm gear lift, thereby compensating for the height difference between the two measuring jaws during the measurement process and improving the calibration accuracy of the center distance caliper with a height difference between the measuring jaws. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the present utility model;

[0013] Figure 2 This is a top view of the structure of this utility model;

[0014] Figure 3 This is a diagram showing the usage state of this utility model.

[0015] In the diagram, 1-calibration platform, 2-worm gear jack, 3-lifting screw, 4-measuring platform A, 5-ball screw, 6-slide table, 7-measuring platform B, 8-measuring hole, 9-screw support, 10-handwheel A, 11-handwheel B, 12-bubble level, 13-ruler. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] Example:

[0019] A calibration device for center distance calipers with height differences in the jaws, see attached document. Figure 1 and attached Figure 2 As shown, the system includes a calibration platform 1, with a worm gear jack 2 at one end. A measuring platform A4 is connected to the lifting screw 3 of the worm gear jack 2, and the worm gear jack 2 controls the rotation of the worm through a handwheel A10. A ball screw 5 is also provided on the calibration platform 1, and a measuring platform B7 is fixedly installed on the slide 6 of the ball screw 5. The measuring platform B7 is positioned opposite to the measuring platform A4, and the ball screw 5 is controlled to rotate through a handwheel B11. The measuring platform B7 moves along the length of the calibration platform 1 under the drive of the ball screw 5. Measuring holes 8 are respectively provided on the surfaces of the measuring platforms A4 and B7, and the line connecting the centers of the measuring holes on the measuring platforms A4 and B7 is parallel to the length of the calibration platform 1. A spiral support leg 9 for adjusting the levelness of the calibration platform 1 is installed at the bottom of the calibration platform 1, and a bubble level 12 for observing the levelness of the calibration platform 1 is also provided on the calibration platform 1.

[0020] In practical application, this invention involves rotating handwheel B11 to control the measuring platform B7 to move along the length of the calibration platform 1. A scale 13 is mounted on the side of the calibration platform 1. The approximate distance between the measuring platform B7 and the measuring platform A4 is read from the scale 13. A gauge block of similar length is then placed between the measuring platforms B7 and A4. The handwheel B11 is continued to be rotated to control the movement of the measuring platform B7. Rotation of handwheel B11 is stopped when the side wall of the measuring platform B7 just touches the side wall of the gauge block. The gauge block is removed, and then handwheel A10 is rotated to control the measuring platform A4 to rise along the lifting screw 3 of the worm gear jack 2. Finally, the measuring jaws of the center distance caliper are moved, and the two jaws are placed into the measuring holes 8 of the measuring platforms B7 and A4. The reading L1 of the center distance caliper is read and compared with the standard center distance L2 to determine the error range of the center distance caliper. Where L2 = L0 + L i L0 is the center distance between the two measuring holes 8 after measuring stage B7 and measuring stage A4 are joined together (a fixed value). i This is the actual length of the gauge block. It should be noted that different gauge blocks of different sizes can be used to reproduce different center distances between the two orifices, thereby allowing for multiple calibrations and comparisons of the center distance caliper. The average value can then be taken to improve the calibration accuracy of the center distance caliper.

[0021] In the above embodiments, please continue to refer to the appendix. Figure 2 As shown, the measuring orifice 8 may include two sets of measuring orifices with different diameters; one set of measuring orifices has a diameter of 5 mm and the other set has a diameter of 10 mm, in order to accommodate the measuring jaw size of calipers with different center distances. Of course, in practical applications, measuring orifices with other diameters can also be set to enhance the adaptability of this device.

[0022] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A center distance caliper calibration device for calibrating a center distance caliper having a height difference, characterized in that, The calibration platform is provided with a worm and gear elevator at one end, and a measuring table A is connected to the lifting screw rod of the worm and gear elevator; a ball screw is arranged on the calibration platform, a measuring table B is fixedly installed on the sliding table of the ball screw, the measuring table B is arranged opposite to the measuring table A, and the measuring table B moves along the length direction of the calibration platform under the driving of the ball screw; the surfaces of the measuring table A and the measuring table B are respectively provided with measuring holes, the center line of the measuring holes on the measuring table A and the measuring holes on the measuring table B is parallel to the length direction of the calibration platform; and the bottom of the calibration platform is provided with screw legs for adjusting the levelness of the calibration platform.

2. A center gauge calibrator for calibrating a center gauge having a height difference of a measuring claw according to claim 1, wherein The worm and gear elevator controls the rotation of the worm through hand wheel A; and the ball screw controls the rotation of the screw rod through hand wheel B.

3. A center gauge calibrator for calibrating a center gauge having a height difference of a measuring claw according to claim 1, wherein The measuring holes include two groups of measuring holes with different diameters; one group of the measuring holes has a diameter of 5 mm, and the other group of the measuring holes has a diameter of 10 mm.

4. The center gauge calibrator for calibrating the center gauge having height difference of the claim 1, wherein, The calibration platform is provided with a bubble level.

5. The center gauge calibrator for calibrating the center gauge having height difference of the measuring claw according to claim 1, wherein, A scale is installed on the side edge of the calibration platform.

Images