阅读说明：本技术 一种对称度测量游标卡尺 (Symmetry measuring vernier caliper ) 是由 张振民 张宗普 颜廷波 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种对称度测量游标卡尺,包括直尺、测量滑块、测量稳定滑块和千分表,直尺靠近一端下侧垂直固定连接有销轴一,测量滑块活动套接在直尺上,且下端固定连接有销轴二,销轴一和销轴二上滚动连接有测量轮,测量稳定滑块活动套接在直尺上并位于测量滑块内侧,且采用调校螺钉锁紧,测量稳定滑块上部沿直尺长度方向安装有千分表,千分表的探头抵靠在测量滑块内侧上方设置的测量挡板上。本发明通过测量稳定滑块固定千分表的固定规格尺寸,通过测量滑块的移动,实现千分表上尺寸的变化,从而实现精确球形内外径或内孔直径和外径的测量,能够适应不同规格的尺寸连续调节测量,成本大大降低,测量精确稳定。(The invention discloses a symmetry measuring vernier caliper which comprises a ruler, a measuring slide block, a measuring stabilizing slide block and a dial indicator, wherein a first pin shaft is vertically and fixedly connected to the lower side of one end, close to the ruler, of the ruler, the measuring slide block is movably sleeved on the ruler, a second pin shaft is fixedly connected to the lower end of the measuring slide block, measuring wheels are connected to the first pin shaft and the second pin shaft in a rolling mode, the measuring stabilizing slide block is movably sleeved on the ruler and located on the inner side of the measuring slide block and locked through an adjusting screw, the dial indicator is installed on the upper portion of the measuring stabilizing slide block in the length direction of the ruler, and a probe of the dial indicator abuts against a measuring baffle arranged above the inner side of the measuring slide block. The invention realizes the change of the dimension on the dial indicator by measuring the fixed specification dimension of the stable sliding block fixed dial indicator and by measuring the movement of the sliding block, thereby realizing the measurement of the precise spherical inner and outer diameters or the inner hole diameter and the outer diameter, being capable of adapting to the continuous adjustment and measurement of the dimensions with different specifications, greatly reducing the cost and realizing the precise and stable measurement.)

1. A symmetry measuring vernier caliper is characterized in that: including ruler (1), measure slider (2), measure and stabilize slider (3) and amesdial (4), ruler (1) is close to the perpendicular fixedly connected with round pin axle one (7) of one end downside, it cup joints on ruler (1) to measure slider (2) activity, and lower extreme fixedly connected with round pin axle two (10), roll connection has measuring wheel (9) on round pin axle one (7) and round pin axle two (10), it cup joints on ruler (1) and is located and measures slider (2) inboard to measure slider (3) activity, and adopt timing screw (12) locking, measure and stabilize slider (3) upper portion and install amesdial (4) along ruler (1) length direction, the probe of amesdial (4) supports and leans on measuring baffle (13) that measure slider (2) inboard top set up.

2. A symmetry-measuring vernier caliper according to claim 1, characterized in that: and replacing the dial indicator (4) with a dial indicator.

3. A symmetry-measuring vernier caliper according to claim 1, characterized in that: the inner end of the adjusting screw (12) is abutted against the adjusting block (11), and the adjusting block (11) is positioned at the bottom of the through hole of the measuring and stabilizing sliding block (3) and is contacted with the bottom of the ruler (1).

4. A symmetry-measuring vernier caliper according to claim 1, characterized in that: the measuring wheel (9) is rotatably connected to the first pin shaft (7) or the second pin shaft (10) through the standard lantern ring (8) of the base point.

5. A symmetry-measuring vernier caliper according to claim 1, characterized in that: a positioning pin hole (14) is formed in the upper portion of the measuring and stabilizing sliding block (3) along the direction of the ruler, a positioning pin shaft (5) is movably inserted into the positioning pin hole (14), one end of the positioning pin shaft (5) is fixedly connected to the measuring sliding block (2), a reset spring (6) is sleeved on the positioning pin shaft (5), and two ends of the reset spring (6) are respectively abutted to the measuring sliding block (2) and the measuring and stabilizing sliding block (3).

6. A symmetry-measuring vernier caliper according to claim 1, characterized in that: the upper part of the measuring sliding block (2) is provided with a locking adjusting screw (15), the inner end of the locking adjusting screw (15) abuts against a cushion block (16), and the cushion block (16) is located at the top of a through hole of the measuring sliding block (2) and is in contact with the top of the ruler (1).

7. A symmetry-measuring vernier caliper according to claim 1, characterized in that: the positioning pin hole (14) is positioned below the dial indicator (4).

8. A symmetry-measuring vernier caliper according to claim 1, characterized in that: the probe tube of the dial indicator (4) is inserted into a mounting hole in the measurement stabilizing sliding block (3) and then locked by a screw, an opening is formed in the upper portion of the mounting hole, and the screw is perpendicularly connected with the two sides of the opening.

Technical Field

The invention belongs to the technical field of calipers, and particularly relates to a symmetry measuring vernier caliper.

Background

The vernier caliper as one kind of widely used high precision measuring tool consists of two parts, including one main scale and one sliding vernier attached to the main scale. However, when the existing vernier caliper is used for measuring the inner diameter and the outer diameter of a sphere, particularly the inner diameter of the sphere, accurate measurement cannot be achieved, and due to the adoption of a special ruler for measurement, the vernier caliper cannot adapt to the change of the inner diameter, needs multiple specifications and is high in cost.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a symmetry measuring vernier caliper to solve the problems existing in the prior art.

The technical scheme adopted by the invention is as follows: the utility model provides a slide caliper is measured to symmetry, including the ruler, measure the slider, measure and stabilize slider and amesdial, the ruler is close to the perpendicular fixedly connected with round pin axle one of one end downside, it cup joints on the ruler to measure the slider activity, and lower extreme fixedly connected with round pin axle two, roll connection has the measuring wheel on round pin axle one and the round pin axle two, it cup joints on the ruler and is located and measures the slider inboard to measure the slider activity, and adopt timing screw locking, it installs the amesdial along ruler length direction to measure and stabilizes slider upper portion, the probe of amesdial supports and leans on the measurement baffle that sets up above measuring the slider inboard.

Preferably, the dial indicator is replaced by a dial indicator.

Preferably, the inner end of the adjusting screw abuts against the adjusting block, and the adjusting block is located at the bottom of the through hole of the measuring and stabilizing sliding block and contacts with the bottom of the ruler.

Preferably, the measuring wheel is rotatably connected to the first pin shaft or the second pin shaft through a standard base point lantern ring.

Preferably, a positioning pin hole is formed in the upper portion of the measurement stabilizing sliding block along the direction of the straight scale, a positioning pin shaft is movably inserted into the positioning pin hole, one end of the positioning pin shaft is fixedly connected to the measurement sliding block, a reset spring is sleeved on the positioning pin shaft, and two ends of the reset spring are respectively abutted against the measurement sliding block and the measurement stabilizing sliding block.

Preferably, the upper part of the measuring slide block is provided with a locking adjusting screw, the inner end of the locking adjusting screw abuts against the cushion block, and the cushion block is located at the top of the through hole of the measuring slide block and contacts with the top of the ruler.

Preferably, the positioning pin hole is located below the dial indicator.

Preferably, the probe tube of the dial indicator is locked by a screw after being inserted into a mounting hole in the measurement stabilizing sliding block, an opening is formed in the upper portion of the mounting hole, and the screw is vertically connected with two sides of the opening.

The invention has the beneficial effects that: compared with the prior art, the invention realizes the change of the dimension on the dial indicator or the dial indicator by measuring the fixed specification dimension of the stable sliding block fixed dial indicator or the dial indicator and by measuring the movement of the sliding block, thereby realizing the measurement of the precise spherical inner diameter or the outer diameter or the inner hole diameter and the outer diameter, being capable of adapting to the continuous adjustment and measurement of the dimensions with different specifications, greatly reducing the cost, realizing the precise and stable measurement and obtaining the symmetry value according to the change of the dial indicator or the dial indicator.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of a measurement stabilization slide;

FIG. 3 is a schematic structural diagram for measuring the outer diameter.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

Example 1: as shown in fig. 1-3, a symmetry measuring vernier caliper comprises a ruler 1, a measuring slide block 2, a measuring stabilizing slide block 3 and a dial indicator 4, wherein the ruler 1 is close to one end lower side and is vertically and fixedly connected with a first pin shaft 7, the measuring slide block 2 is movably sleeved on the ruler 1, the lower end of the measuring slide block is fixedly connected with a second pin shaft 10, the first pin shaft 7 and the second pin shaft 10 are connected with a measuring wheel 9 in a rolling mode, the measuring stabilizing slide block 3 is movably sleeved on the ruler 1 and is located on the inner side of the measuring slide block 2 and is locked by an adjusting screw 12, the dial indicator 4 is installed on the upper portion of the measuring stabilizing slide block 3 along the length direction of the ruler 1, a probe of the dial indicator 4 is abutted to a measuring baffle 13 arranged on the upper side of the measuring slide block 2, and the dial indicator 4 can be replaced by a dial indicator.

Preferably, the inner end of the adjusting screw 12 abuts against the adjusting block 11, the adjusting block 11 is located at the bottom of the through hole of the measuring and stabilizing sliding block 3 and contacts the bottom of the ruler 1, the locking area can be increased, the locking stability is improved, stress concentration is reduced, and the damage to the surface of the ruler is avoided.

Preferably, the measuring wheel 9 is rotatably connected to the first pin 7 or the second pin 10 through the standard base point lantern ring 8.

Preferably, a positioning pin hole 14 is formed in the upper portion of the measuring and stabilizing sliding block 3 along the direction of the ruler, a positioning pin shaft 5 is movably inserted into the positioning pin hole 14, one end of the positioning pin shaft 5 is fixedly connected to the measuring sliding block 2, a reset spring 6 is sleeved on the positioning pin shaft 5, two ends of the reset spring 6 are respectively abutted to the measuring sliding block 2 and the measuring and stabilizing sliding block 3, further directional sliding can be achieved, and the reset spring plays a role in resetting zero value adjustment.

Preferably, the upper part of the measuring slide block 2 is provided with a locking adjusting screw 15, the inner end of the locking adjusting screw 15 abuts against a cushion block 16, the cushion block 16 is positioned at the top of the through hole of the measuring slide block 2 and contacts with the top of the ruler 1, and the measured data can be locked.

Preferably, the positioning pin hole 14 is positioned below the dial indicator 4, so that the guiding performance is better, and the measurement is higher.

Preferably, the probe of the dial indicator 4 is inserted into the mounting hole of the measurement stabilizing slide block 3 and then locked by a screw (shown in the figure), the mounting hole at the upper end of the measurement stabilizing slide block 3 is shown in fig. 2, an opening is formed in the upper portion of the mounting hole, and the screw is vertically connected with two sides of the opening and can adapt to stable locking of pipe diameter change.

The use principle is as follows: before measurement, a dial indicator or a dial indicator is required to be zeroed, when the diameter or the diameter of a ball to be measured is A, the stable sliding block is adjusted and measured to be fixed to a proper position, the distance between the outer ends of the two measuring wheels is A, the two measuring wheels are placed in the spherical hole or the inner hole, the measuring data on the dial indicator or the dial indicator is B (the clockwise rotation is a positive value, and the anticlockwise rotation is a negative value), the measuring result is A + B, and the B is a symmetry value.

When measuring the outer diameter, the measuring module part formed by the measuring slide block and the measuring stable slide block is reversely installed, and the other operation steps are the same as the inner diameter measurement.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.