CN216012001U

CN216012001U - Vernier caliper for measuring diameter of threaded hole taper opening

Info

Publication number: CN216012001U
Application number: CN202122696471.9U
Authority: CN
Inventors: 徐明俊; 裴晓梅; 刘志强
Original assignee: Jiangsu Zuoyi Precision Machinery Co ltd
Current assignee: Jiangsu Zuoyi Precision Machinery Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-03-11
Anticipated expiration: 2031-11-05

Abstract

The utility model provides a vernier caliper of screw hole taper mouth diameter measurement usefulness relates to the measurement and examines a technical field, including main scale and the vice chi of vernier, the one end of main scale is equipped with the fixing clip foot, the one end of the vice chi of vernier is equipped with movable clip foot, fixing clip foot and activity clip foot are located same one side, the vice chi of vernier and activity clip foot with main scale sliding connection, its characterized in that: the fixed card foot all is equipped with the radial blade of taper hole and taper hole generating line blade on with the activity card foot, the radial blade of taper hole and taper hole generating line blade are used for the joint to be surveyed the screw hole taper mouth, the contained angle of the axis of taper hole generating line blade and quilt survey screw hole taper mouth is unanimous with the taper angle of quilt survey screw hole taper mouth. The utility model discloses the multiple specification of taper hole taper angle customization of card foot can be according to actual demand, and working method is the same with using slide caliper to measure the internal diameter, does not need supplementary utensil of examining, and easy operation has reduced the detection degree of difficulty, has improved detection efficiency greatly, has also reduced the cost of labor.

Description

Vernier caliper for measuring diameter of threaded hole taper opening

Technical Field

The utility model discloses the technique relates to measure and examines a technical field, especially relates to a vernier caliper that screw hole awl mouth diameter measurement used.

Background

The current commonly used measuring tool for the diameter of the taper opening of the threaded hole is provided with a profile measuring projector and an aperture meter.

The projector is a non-contact precision optical measuring instrument. During measurement, a measured part of a part needs to be aligned to the camera, and a measured outline graph is clearly displayed on a projection screen by controlling a micrometering hand wheel with an X, Y shaft. In the process, the auxiliary measurement time for placing parts and adjusting the image definition by operating the hand wheel is longer, and the requirements on the professional skills and the operation experience of inspectors are higher.

The caliber gauge is an indirect measuring tool. Because the diameters of the sections of the taper hole with different depths are different, the caliber table judges the tolerance range of the caliber of the taper hole and gives corresponding numerical values by measuring the depth change from the section with a certain specific diameter of the taper hole to the end surface. The caliber gauge and the plug gauge belong to a special gauge, threaded holes or base holes with different diameters and specifications must be provided with measuring heads with corresponding diameters and specifications, for machining units, large-batch purchase of the special gauge with different specifications is high in cost, and management and maintenance also need to consume manpower and material resources.

Therefore, a measuring tool which can directly measure and directly read the diameter of the taper opening of the threaded hole is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the background art, and the vernier caliper who provides a screw hole taper mouth diameter measurement usefulness.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a vernier caliper of measuring usefulness of screw hole taper mouth diameter, includes main scale and the vice chi of vernier, the one end of main scale is equipped with fixed card foot, the one end of the vice chi of vernier is equipped with movable card foot, fixed card foot and movable card foot are located same one side, the vice chi of vernier and movable card foot with main scale sliding connection, its characterized in that: the fixed card foot all is equipped with the radial blade of taper hole and taper hole generating line blade on with the activity card foot, the radial blade of taper hole and taper hole generating line blade are used for the joint to be surveyed the screw hole taper mouth, the contained angle of the axis of taper hole generating line blade and quilt survey screw hole taper mouth is unanimous with the taper angle of quilt survey screw hole taper mouth.

Preferably, the included angle between the taper hole radial cutting edge and the taper hole bus cutting edge is larger than 90 degrees.

Preferably, an arc-shaped notch is formed at the joint of the taper hole radial cutting edge and the taper hole bus cutting edge.

Preferably, the fixed clamping pins and the movable clamping pins are arranged in a staggered mode in the thickness direction.

Preferably, the cutting edge that sets up on the fixed card foot is fixed card foot taper hole radial cutting edge and fixed card foot taper hole generating line cutting edge respectively, the cutting edge that sets up on the activity card foot is activity card foot taper hole radial cutting edge and activity card foot taper hole generating line cutting edge respectively, fixed card foot taper hole radial cutting edge with activity card foot taper hole radial cutting edge is located same water flat line.

Preferably, the fixed clamping foot taper hole bus cutting edge and the movable clamping foot taper hole bus cutting edge are symmetrically arranged.

Preferably, the auxiliary vernier scale is sleeved on two sides of the main scale, a middle connecting section of the auxiliary vernier scale is attached to the back of the main scale, and a depth measuring rod is fixed at one end, far away from the movable clamping pin, of the middle connecting section.

Preferably, the upper part of the vernier caliper is provided with a limit screw in a penetrating way, and the limit screw is used for rotatably propping against the main caliper for limiting and fixing.

Preferably, the fixed clamping foot is detachably connected with the main ruler, and the movable clamping foot is detachably connected with the vernier auxiliary ruler.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model discloses a slide caliper that threaded hole taper mouth diameter measurement used, through taper hole radial blade and taper hole generating line blade on fixed calorie foot and the activity calorie foot, can quick joint be surveyed threaded hole taper mouth to the screw hole taper mouth of the taper angle of the fixed model specification of adaptation, very big detection operation method and the step of the taper mouth diameter of screw hole have been simplified, have shortened inspection man-hour, have improved production efficiency. And simultaneously, the utility model discloses a slide caliper is simple easily to be operated, measure accurately, and is not high to inspection personnel's technical merit requirement, has also reduced the human resource cost.

Drawings

Fig. 1 is a schematic view of the overall structure of a vernier caliper for measuring the diameter of a threaded hole taper;

fig. 2 is a view showing a usage state of a minimum measurement range of a vernier caliper for measuring a diameter of a taper opening of a threaded hole according to the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a general usage state diagram of a vernier caliper for measuring the diameter of the taper opening of the threaded hole according to the present invention;

fig. 5 is a partially enlarged view of fig. 4 at B.

Illustration of the drawings:

1. fixing the clamping pin; 1-1, fixing a radial cutting edge of a taper hole of a clamping foot; 1-2, fixing a cutting edge of a clamping foot taper hole bus; 2. a movable clamping pin; 2-1, moving the radial cutting edge of the taper hole of the clamping foot; 2-2, cutting edges of the bus of the taper hole of the movable clamping foot; 3. a main scale; 4. a vernier auxiliary ruler; 5. a depth measuring rod; 6. and a limiting screw rod.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1-5, the utility model discloses a vernier caliper of screw hole taper mouth diameter measurement usefulness, including main scale 3 and the vice chi of vernier 4, the one end of main scale 3 is equipped with fixed card foot 1, the one end of the vice chi of vernier 4 is equipped with movable card foot 2, fixed card foot 1 and movable card foot 2 are located same one side, the vice chi of vernier 4 and movable card foot 2 with 3 sliding connection of main scale. The fixed clamping foot 1 is provided with a fixed clamping foot taper hole radial cutting edge 1-1 and a fixed clamping foot taper hole bus cutting edge 1-2. The movable clamping pin 2 is provided with a movable clamping pin taper hole radial cutting edge 2-1 and a movable clamping pin taper hole bus cutting edge 2-2, wherein the included angle between the fixed clamping pin taper hole bus cutting edge 1-2 and the movable clamping pin taper hole bus cutting edge 2-2 and the axis of the taper hole is consistent with the taper hole taper angle. The two groups of the taper hole radial cutting edges and the taper hole bus cutting edges are used for clamping the taper mouth of the tested threaded hole, wherein the included angle between the fixed clamping pin taper hole bus cutting edge 1-2, the movable clamping pin taper hole bus cutting edge 2-2 and the axis of the taper mouth of the tested threaded hole is consistent with the taper angle of the taper mouth of the tested threaded hole.

In this embodiment, the contained angle between taper hole radial blade and the taper hole generating line blade is greater than 90, and concrete contained angle is set for the screw hole taper mouth adaptation that needs and the taper angle of fixed model specification.

In some embodiments, an arc-shaped notch is formed at the joint of the taper hole radial cutting edge and the taper hole bus cutting edge, so that the measurement error caused by the angle interference or unevenness of the taper opening of the measured threaded hole is avoided.

In this embodiment, the fixed clip 1 and the movable clip 2 are arranged in a staggered manner in the thickness direction, so that the fixed clip 1 and the movable clip 2 can reach a minimum distance along with the movement of the vernier caliper 4, and when the repeated dislocation coincidence occurs, the diameter of the taper mouth with a smaller size can be detected.

In this embodiment, the radial cutting edge 1-1 of the taper hole of the fixed clamping pin and the radial cutting edge 2-1 of the taper hole of the movable clamping pin are located on the same horizontal line, and the generatrix cutting edge 1-2 of the taper hole of the fixed clamping pin and the generatrix cutting edge 2-2 of the taper hole of the movable clamping pin are symmetrically arranged, so that the flatness of measurement use is improved, and the measurement precision is ensured.

Referring to fig. 1 specifically, taking the fixed clip 1 as an example, the intersection point of the radial cutting edge 1-1 of the taper hole of the fixed clip and the generatrix cutting edge 1-2 of the taper hole of the fixed clip needs to be processed with back chipping treatment, and the method is to process an arc notch with radius R0.5 by taking the intersection point of the two cutting edges as the center. The same back gouging treatment is carried out on the intersection point of the cutting edge of the movable clamping pin 2 and the fixed clamping pin 1. When the clamping foot is in a zero position state, the circle centers of circular arcs with the diameter of R0.5 at the intersection point of the upper cutting edges of the fixed clamping foot 1 and the movable clamping foot 2 are superposed, and the reading of the vernier caliper is 0.

Referring to fig. 3, since the radial cutting edge has a certain length in the radial direction of the taper hole to be measured, the vernier for measuring the diameter of the taper opening of the threaded hole has the minimum measurement limit for the depth and the diameter of the taper hole to be measured. The utility model discloses the card foot specification of example: the cutting edge clamp is 105 degrees, the measurable taper hole taper angle is 15 degrees, the minimum limit depth is 2mm, and the minimum limit taper diameter phi is 3.3 mm.

Please refer to fig. 4-5, which are schematic diagrams of examples of the threaded hole taper diameter for measuring parameters shown in the figure simply by using the vernier caliper, wherein the threaded hole taper diameter in the embodiment is phi 15.6mm, and the tolerance range is 0 mm- +0.1 mm. Firstly, firmly attaching a fixed clamping foot taper hole radial cutting edge 1-1 and a movable clamping foot taper hole radial cutting edge 2-1 to a threaded hole mouth sinking table top; secondly, adjust activity card foot 2 for fixed card foot taper hole generating line blade 1-2 and activity card foot taper hole generating line blade 2-2 are firm with the arbitrary generating line laminating of being surveyed the taper hole, and 3 readings of home ruler this moment: 15mm, vernier caliper 4 reading: 0.6mm, the actually measured taper hole caliber is: phi 15.6 mm.

In other embodiments, the auxiliary vernier scale 4 is sleeved on two sides of the main scale 3, the middle connecting section of the auxiliary vernier scale 4 is attached to the back of the main scale 3, and a depth measuring rod 5 is fixed at one end of the middle connecting section, which is far away from the movable clamping pin, and can be used for measuring the depth of the hole.

In other embodiments, a limit screw 6 is penetratingly arranged at the upper part of the vernier caliper 4, and the limit screw 6 is used for rotatably supporting the main caliper 3 for limiting and fixing, so that measurement deviation caused by manual error movement in the measurement process is avoided.

Preferably, fixed calorie of foot 1 with the connection can be dismantled to main scale 3, activity calorie of foot 2 with the connection can be dismantled to the vice chi of vernier 4, so design can realize sharing under the condition of one set of main scale 3 and the vice chi 4 of vernier, only need to change the taper mouth diameter that fixed joint 1 and activity calorie of foot 2 can the screw hole of the different specification models of adaptation measurement.

The utility model relates to a vernier caliper for measuring diameter of a taper opening of a threaded hole, which is simple in use method and easy to operate, and can also reduce hardware cost and human resource cost. The taper hole calibers of the same taper angle can be measured by adopting the threaded hole taper diameter measuring vernier caliper with the same clamping foot angle as long as the diameter size is within the reading range of the vernier caliper, and in the aspect of hardware investment, only the clamping feet of several conventional taper angles need to be customized. And the vernier caliper clamping foot has mature processing technology and relatively simple manufacture, and even the clamping foot with a special angle is customized, the cost is lower than the manufacturing cost of the caliber gauge measuring head. Therefore, the vernier caliper for simply and conveniently measuring the diameter of the taper opening of the threaded hole not only simplifies the operation steps, shortens the detection working time and improves the production efficiency, but also reduces the human resource cost and the hardware cost.

In the present invention, the terms "mounting," "connecting," "fixing," and the like are to be understood in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, the appearances of the phrases "one embodiment," "some embodiments," "a specific embodiment," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a vernier caliper of measuring usefulness of screw hole taper mouth diameter, includes main scale and the vice chi of vernier, the one end of main scale is equipped with fixed card foot, the one end of the vice chi of vernier is equipped with movable card foot, fixed card foot and movable card foot are located same one side, the vice chi of vernier and movable card foot with main scale sliding connection, its characterized in that: the fixed card foot all is equipped with the radial blade of taper hole and taper hole generating line blade on with the activity card foot, the radial blade of taper hole and taper hole generating line blade are used for the joint to be surveyed the screw hole taper mouth, the contained angle of the axis of taper hole generating line blade and quilt survey screw hole taper mouth is unanimous with the taper angle of quilt survey screw hole taper mouth.

2. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: the included angle between the taper hole radial cutting edge and the taper hole bus cutting edge is larger than 90 degrees.

3. A vernier caliper for measuring a taper diameter of a threaded hole according to claim 1 or 2, wherein: and an arc-shaped notch is formed at the joint of the taper hole radial cutting edge and the taper hole bus cutting edge.

4. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: the fixed clamping pins and the movable clamping pins are arranged in a staggered mode in the thickness direction.

5. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: the cutting edge that sets up on the fixed card foot is fixed card foot taper hole radial cutting edge and fixed card foot taper hole generating line cutting edge respectively, the cutting edge that sets up on the activity card foot is activity card foot taper hole radial cutting edge and activity card foot taper hole generating line cutting edge respectively, fixed card foot taper hole radial cutting edge with activity card foot taper hole radial cutting edge is located same water flat line.

6. The vernier caliper for measuring the taper diameter of a threaded hole according to claim 5, wherein: the fixed clamping foot taper hole bus cutting edge and the movable clamping foot taper hole bus cutting edge are symmetrically arranged.

7. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: the vernier auxiliary ruler is sleeved on two sides of the main ruler, the middle connecting section of the vernier auxiliary ruler is attached to the back of the main ruler, and a depth measuring rod is fixed at one end, far away from the movable clamping pin, of the middle connecting section.

8. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: and the upper part of the vernier auxiliary ruler is provided with a limiting screw rod in a penetrating way, and the limiting screw rod is used for rotatably propping against the main ruler for limiting and fixing.

9. A vernier caliper for measuring the diameter of a tapped taper according to claim 1, wherein: the fixed clamping foot is detachably connected with the main ruler, and the movable clamping foot is detachably connected with the vernier auxiliary ruler.