CN203224202U

CN203224202U - Visible direct-reading type caliper

Info

Publication number: CN203224202U
Application number: CN 201320254835
Authority: CN
Inventors: 任国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-13
Filing date: 2013-05-13
Publication date: 2013-10-02
Anticipated expiration: 2023-05-13

Abstract

The utility model discloses a visible direct-reading type caliper. A first caliper arm and a second caliper arm are hinged to each other, a first caliper pin arranged at the head end of the first caliper arm and a second caliper pin arranged at the head end of the second caliper arm are in mirror symmetry relative to a hinged point, the first caliper and the second caliper pin are in relative reverse revolution around the hinged point along one identical arc motion trajectory respectively, the center of a circle where the arc motion trajectory overlaps with the hinged point; the tail end of the first caliper arm is fixedly provided with a measuring scale on which chord length scales distributed along an arc line are correspondingly disposed, the center of a circle to which the arc line belongs where the chord length scales are located overlaps with the hinged point, a tip peak of a pointer fixedly arranged at the tail end of the second caliper arm correspondingly is located on a straight line that passes through a tip contact of the second caliper pin and the hinged point; the tip of the pointer faces a radial direction of the circle to which the arc line belongs where the chord length scales are located, but deviates from the center of the circle to indicate the chord length scales of the straight-line distance between a first caliper pin tip contact and a second caliper pin tip contact. By adopting the visible direct-reading type caliper, the efficiency of measuring an annular groove or other workpieces can be improved.

Description

Visual direct-reading type clamp

Technical field

The utility model relates to survey instrument, belongs to the improvement, particularly visual direct-reading type clamp of measuring the internal calliper structure.

Background technology

It is unreasonable for original existing part internal calliper structure, it still is difficult to measure the diameter of the ring-shaped groove that inside such as through hole less than normal, blind hole have, even if can measure the diameter of ring-shaped groove, it is also also inconvenient to operate, also more time-consuming, accurately the efficient of measure annular groove is corresponding also just lower.

The utility model content

The purpose of this utility model is to provide a kind of visual direct-reading type clamp, it is rational in infrastructure, simple, can measure more conveniently the diameter of the ring-shaped groove that has of inside such as through hole less than normal, blind hole or the physical dimension of other workpiece, it is more convenient to use, save time, improve the efficient of measure annular groove or other workpiece.

The purpose of this utility model is achieved in that a kind of visual direct-reading type clamp, comprise first tong arm and second tong arm, first tong arm and second tong arm are hinged, the relative pin joint mirror image of the second pincers pin symmetry of the first pincers pin that the first tong arm head end arranges and the setting of the second tong arm head end, pin joint is relative oppositely to revolve round the sun the first pincers pin to center on along same circular motion track separately with the second pincers pin, and the center of circle and the pin joint of this circular motion track place circle coincide; The first tong arm tail end is fixedly installing measuring stick, relative set the chord length scale of laying along circular arc line on measuring stick, the center of circle of the circular arc line place circle at chord length scale place overlaps with pin joint, and its tip of pointer of the second tong arm tail end respective fixation setting is positioned at through second and clamps on the straight line of toe end contact and pin joint; The pointer tip towards circular arc line place, chord length scale place circle is radially clamped the chord length scale of air line distance between the toe end contact but deviate from the round center of circle, circular arc line place, chord length scale place to indicate the first pincers toe end contact and second.

Core innovative point of the present utility model is: the first tong arm tail end is arranging draws the measuring stick that the chord length scale is arranged, the second tong arm tail end is arranging the pointer that is used to indicate the chord length scale, when pointed zero graduation line, the first pincers toe end contact and the second pincers toe end contact then coincide.If of the present utility model first, the second pincers pin touches through hole respectively, during ring-shaped groove internal perisporium that inside such as blind hole have, the a certain scale value of the chord length scale that pointer is indicated is the diameter dimension of this ring-shaped groove, being equal to the first pincers toe end contact and second, to clamp chord length length between the toe end contact (be first with respect to radius, the second pincers pin is apart from the circle of the radial distance of pin joint), therefore, the diameter dimension of ring-shaped groove is exactly a certain scale value by the indicated chord length scale of the viewed pointer of naked eyes, can directly be read out, need not more non-productive operation work.In sum, the utility model is rational in infrastructure, simple, can measure more conveniently the diameter of the ring-shaped groove that has of inside such as through hole less than normal, blind hole or the physical dimension of other workpiece, it is more convenient to use, save time, improve the efficient of measure annular groove or other workpiece.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is structural representation of the present utility model.

Embodiment

A kind of visual direct-reading type clamp, as shown in Figure 1, comprise first tong arm 1 and second tong arm 5, first tong arm 1 and second tong arm 5 are hinged, the second pincers pin, the 6 relative pin joint mirror image symmetries of the first pincers pin 7 that first tong arm, 1 head end arranges and the setting of second tong arm, 5 head ends, pin joint is relative oppositely to revolve round the sun the first pincers pin 7 to center on along same circular motion track separately with the second pincers pin 6, and the center of circle and the pin joint of this circular motion track place circle coincide; First tong arm, 1 tail end is fixedly installing measuring stick 4, relative set the chord length scale of laying along circular arc line on measuring stick 4, the center of circle of the circular arc line place circle at chord length scale place overlaps with pin joint, and pointer 3 its tip of second tong arm, 5 tail end respective fixation settings are positioned at through second and clamp on the straight line of pin 6 tip contact and pin joint; Pointer 3 tips towards circular arc line place, chord length scale place circle are radially clamped the chord length scale of air line distance between pin 6 tip contact but deviate from the round center of circle, circular arc line place, chord length scale place to indicate first pincers pin 7 tip contact and second.

As shown in Figure 1, the zero graduation line of chord length scale is positioned on the straight line through first pincers pin 7 tip contact and pin joint, so that the scale numerical value of chord length scale begins corresponding bearing of trend increase along circular arc line from the zero graduation line.

As shown in Figure 1, measuring stick 4 is for being the plates of arc shape.

As shown in Figure 1, circular arc line place, chord length scale place radius of a circle R1 equals circular motion track place radius of a circle R2.When the ratio of radius R 1 and radius R 2 was 1, the chord length scale was air line distance between first pincers pin 7 tip contact and the second pincers pin, 6 tip contact; Radius R 1 and radius R 2 desirable any ratios, the least unit value of chord length scale actual design depend on radius R 1 and the radius R 2 actual ratios of getting.

Claims

1. visual direct-reading type clamp, comprise first tong arm (1) and second tong arm (5), first tong arm (1) and second tong arm (5) are hinged, the relative pin joint mirror image of the second pincers pin (6) symmetry of the first pincers pin (7) that first tong arm (1) head end arranges and the setting of second tong arm (5) head end, pin joint is relative oppositely to revolve round the sun the first pincers pin (7) to center on along same circular motion track separately with the second pincers pin (6), and the center of circle and the pin joint of this circular motion track place circle coincide; It is characterized in that: first tong arm (1) tail end is fixedly installing measuring stick (4), go up relative set at measuring stick (4) and the chord length scale of laying along circular arc line, the center of circle of the circular arc line place circle at chord length scale place overlaps with pin joint, and its tip of pointer (3) that second tong arm (5) tail end respective fixation arranges is positioned at through second and clamps on the straight line of pin (6) tip contact and pin joint; Pointer (3) is most advanced and sophisticated towards circular arc line place, chord length scale place circle radially, but deviates from the round center of circle, circular arc line place, chord length scale place to indicate the chord length scale of air line distance between first pincers pin (7) tip contact and second pincers pin (6) tip contact.

2. visual direct-reading type clamp according to claim 1, it is characterized in that: the zero graduation line of chord length scale is positioned on the straight line through first pincers pin (7) tip contact and pin joint, so that the scale numerical value of chord length scale begins corresponding bearing of trend increase along circular arc line from the zero graduation line.

3. visual direct-reading type clamp according to claim 1 is characterized in that: measuring stick (4) is for being the plates of arc shape.

4. visual direct-reading type clamp according to claim 1, it is characterized in that: chord length scale place circular arc line place radius of a circle R1 equals circular motion track place radius of a circle R2.