阅读说明：本技术 一种内外径测量游标卡尺 (Inside and outside diameter 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：本发明公开了一种内外径测量游标卡尺,包括直尺、测量滑块、顶杆滑块和千分表,测量滑块和顶杆滑块活动套接在直尺上并采用锁紧螺钉锁紧,测量滑块上方安装有千分表,千分表的伸缩探针抵靠在伸缩测量头组件上,测量头组件安装在测量滑块内侧上方,顶杆滑块上方沿直尺方向安装有顶杆,顶杆内端正对伸缩测量头组件内端中心。本发明通过测量滑块和顶杆滑块固定千分表或百分表的固定规格尺寸,通过伸缩测量头组件的定位伸缩,并触碰千分表的伸缩探针,实现千分表或百分表上尺寸的变化,能够适应外径和内径(直径和球径)的精确测量,测量方便快捷,而且能够适应不同规格的调整,大大降低设备成本,测量精确稳定。(The invention discloses an inside and outside diameter measuring vernier caliper which comprises a ruler, a measuring slide block, an ejector rod slide block and a dial indicator, wherein the measuring slide block and the ejector rod slide block are movably sleeved on the ruler and locked by locking screws, the dial indicator is arranged above the measuring slide block, a telescopic probe of the dial indicator is abutted against a telescopic measuring head assembly, the measuring head assembly is arranged above the inner side of the measuring slide block, the ejector rod is arranged above the ejector rod slide block along the direction of the ruler, and the inner end of the ejector rod is opposite to the center of the inner end of the telescopic measuring head assembly. The dial indicator or the dial indicator is fixed by the measuring slide block and the ejector rod slide block, the size change on the dial indicator or the dial indicator is realized by the positioning and stretching of the stretching measuring head assembly and the touching of the stretching probe of the dial indicator, the accurate measurement of the outer diameter and the inner diameter (diameter and ball diameter) can be adapted, the measurement is convenient and quick, the adjustment of different specifications can be adapted, the equipment cost is greatly reduced, and the measurement is accurate and stable.)

1. The utility model provides an inside and outside footpath measurement slide caliper which characterized in that: including ruler (1), measure slider (2), ejector pin slider (4) and amesdial (6), it cup joints on ruler (1) and adopts locking screw (8) to lock to measure slider (2) and ejector pin slider (4) activity, amesdial (6) are installed to measurement slider (2) top, the flexible probe of amesdial (6) supports and leans on flexible measuring head subassembly (3), install in measuring slider (2) inboard top measuring head subassembly (3), ejector pin (5) are installed along the ruler direction in ejector pin slider (4) top, ejector pin (5) inner is just to flexible measuring head subassembly (3) inner center.

2. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the dial indicator (6) is replaced by a dial indicator.

3. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the telescopic measuring head assembly (3) comprises an outer sleeve (301), an inner sleeve (302), a thimble (303) and a push rod (304), wherein two sides of the outer sleeve (301) are provided with symmetrical cantilevers (305), the end part of each cantilever (305) is rotatably connected with a positioning guide wheel (306), the inner sleeve (302) is movably embedded into the outer sleeve (301), the inner sleeve (302) is provided with an inner convex ring (307) close to the front end, the rear end of the outer sleeve (301) is provided with an outer convex ring I (308), the inner sleeve (302) is sleeved with a return spring I (309), two ends of the return spring I (309) respectively abut against the inner convex ring I (307) and the outer convex ring I (308), the outer cylindrical surface of the front end of the inner sleeve (302) is fixedly connected with a limiting anti-falling ring (310), the outer diameter of the limiting anti-falling ring (310) is larger than the inner diameter of the inner convex ring (307), the centre of the front end of the push rod (304) is provided with the thimble (303), the rear end is movably embedded into the inner sleeve (302), and the centre of the rear end surface abuts against a telescopic probe of a dial indicator (6), a second outer convex ring (311) and a second rod part are arranged on the push rod (304) close to the front end, a second return spring (312) is sleeved on the rod part, a limiting connecting sleeve (313) is embedded in the rear end of the inner sleeve (302), two ends of the second return spring (312) respectively abut against the second outer convex ring (311) and the limiting connecting sleeve (313), the push rod (304) is movably sleeved on the limiting connecting sleeve (313), the inner sleeve (302) and the limiting connecting sleeve (313) are fixedly connected to a supporting plate (314), and the supporting plate (314) is fixedly connected to the measuring sliding block (1); the inner diameter of the outer sleeve (301) is larger than the outer diameter of a cylindrical head at the upper end of the supporting plate (314), a U-shaped notch (315) is arranged at the lower side of the outer sleeve, and the width of the U-shaped notch (315) is larger than that of the supporting plate (314).

4. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the two ends of the ejector rod (5) are detachably connected with measuring contacts (7), and the measuring contacts (7) are of conical structures, and the end parts of the conical structures are ball heads.

5. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the lower part of the telescopic measuring head component (3) is fixedly connected to the measuring slide block (2) through a positioning pin (10) and a fixing screw (11).

6. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the locking screw (8) is abutted against the cushion block (9), and the cushion block (9) is positioned at the bottom of the ruler installation through hole of the measuring slide block (2) or the ejector rod slide block (4) and is in contact with the bottom of the ruler (1).

7. An inside and outside diameter measuring vernier caliper according to claim 1, characterized in that: the probe tube of the dial indicator (4) is locked by a screw after being inserted into the mounting hole in the measuring slide block (2), the upper part of the mounting hole is provided with an opening, and the screw is vertically connected with the two sides of the opening.

Technical Field

The invention belongs to the technical field of calipers, and particularly relates to an inner and outer diameter 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 measures the inner diameter and the outer diameter of a sphere, accurate measurement cannot be achieved, and the existing vernier caliper measures the inner diameter by adopting a special ruler, 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 an inside and outside diameter 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 an inside and outside footpath measurement slide caliper, includes the ruler, measures slider, ejector pin slider and amesdial, measures slider and ejector pin slider activity and cup joints on the ruler and adopts locking screw locking, measures the slider top and installs the amesdial, and the flexible probe of amesdial supports and leans on flexible measuring head subassembly, and measuring head subassembly is installed in measuring the inboard top of slider, and the ejector pin is installed along the ruler direction in ejector pin slider top, and the ejector pin is inner just to flexible measuring head subassembly inner center.

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

Preferably, the telescopic measuring head assembly comprises an outer sleeve, an inner sleeve, a thimble and a push rod, wherein two sides of the outer sleeve are provided with symmetrical cantilevers, the end parts of the cantilevers are rotatably connected with positioning guide wheels, the inner sleeve is movably embedded into the outer sleeve, the inner sleeve is provided with an inner convex ring close to the front end, the rear end of the outer sleeve is provided with a first outer convex ring, the inner sleeve is sleeved with a first return spring, two ends of the first return spring respectively abut against the inner convex ring and the first outer convex ring, the outer cylindrical surface of the front end of the inner sleeve is fixedly connected with a limiting anti-falling ring, the outer diameter of the limiting anti-falling ring is larger than the inner diameter of the inner convex ring, the centre of the front end of the push rod is provided with the thimble, the rear end part is movably embedded into the inner sleeve, the centre of the rear end surface abuts against a telescopic probe of a dial gauge, the push rod is provided with a second outer convex ring and a rod part sleeved with a return spring, the rear end of the inner sleeve is embedded into a limiting connecting sleeve, two ends of the return spring respectively abut against the second outer convex ring and the limiting connecting sleeve, and the push rod is movably sleeved with the limiting connecting sleeve, endotheca and spacing adapter sleeve fixed connection are in the backup pad, and backup pad fixed connection is on measuring the slider, and the overcoat internal diameter is greater than the cylinder head external diameter of backup pad upper end, and the downside is provided with U type breach, and the width of U type breach is greater than the width of backup pad.

Preferably, the two ends of the ejector rod are detachably connected with measuring contacts, and the measuring contacts are of conical structures, and the end parts of the conical structures are ball heads.

Preferably, the lower part of the telescopic measuring head assembly is fixedly connected to the measuring slide block through a positioning pin and a fixing screw.

Preferably, the locking screw abuts against the cushion block, and the cushion block is located at the bottom of the ruler installation through hole of the measuring slide block or the ejector rod slide block and contacts with the bottom of the ruler.

Preferably, the probe tube of the dial indicator is locked by a screw after being inserted into the mounting hole in the measuring slide block, the upper part of the mounting hole is provided with an opening, 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 dial indicator or the dial indicator is fixed in fixed specification and size through the measuring slide block and the ejector rod slide block, size change on the dial indicator or the dial indicator is realized through positioning and stretching of the stretching measuring head assembly and touching of a stretching probe of the dial indicator, accurate measurement of the outer diameter and the inner diameter (diameter and spherical diameter) can be adapted, measurement is convenient and fast, adjustment of different specifications can be adapted, equipment cost is greatly reduced, and measurement is accurate and stable.

Drawings

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

FIG. 2 is a schematic view of a telescopic measuring head assembly;

FIG. 3 is a schematic view of the construction of the telescoping measuring head assembly (with the support plate removed);

FIG. 4 is a schematic view of the structure of the jacket;

FIG. 5 is a schematic view of a support plate;

FIG. 6 is a schematic side view of the measuring slide;

FIG. 7 is a side view of the ejector pin slider;

fig. 8 is a schematic diagram of an outer diameter measurement structure.

Detailed Description

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

Example 1: as shown in fig. 1-8, a vernier caliper for measuring inner and outer diameters comprises a ruler 1, a measuring slide block 2, an ejector rod slide block 4 and a dial indicator 6, wherein the measuring slide block 2 and the ejector rod slide block 4 are movably sleeved on the ruler 1 and locked by a locking screw 8, the dial indicator 6 is installed above the measuring slide block 2, a telescopic probe of the dial indicator 6 is abutted against a telescopic measuring head assembly 3, the measuring head assembly 3 is installed above the inner side of the measuring slide block 2, an ejector rod 5 is installed above the ejector rod slide block 4 along the direction of the ruler, the inner end of the ejector rod 5 is just opposite to the center of the inner end of the telescopic measuring head assembly 3, and the dial indicator can be replaced by a dial indicator.

Preferably, the telescopic measuring head assembly 3 comprises an outer sleeve 301, an inner sleeve 302, a thimble 303 and a push rod 304, wherein two sides of the outer sleeve 301 are provided with symmetrical cantilevers 305, the end part of the cantilever 305 is rotatably connected with a positioning guide wheel 306, the inner sleeve 302 is movably embedded into the outer sleeve 301, the inner sleeve 302 is provided with an inner convex ring 307 near the front end, the rear end of the outer sleeve 301 is provided with an outer convex ring 308, the inner sleeve 302 is sleeved with a first return spring 309, two ends of the first return spring 309 respectively abut against the inner convex ring 307 and the outer convex ring 308, the outer cylindrical surface of the front end of the inner sleeve 302 is fixedly connected with a limiting anti-falling ring 310, the outer diameter of the limiting anti-falling ring 310 is larger than the inner diameter of the inner convex ring 307, the centre of the front end of the push rod 304 is provided with the thimble 303, the rear end part is movably embedded into the inner sleeve 302 and the centre of the rear end surface abuts against the telescopic probe of the dial indicator 6, the push rod 304 is provided with an outer convex ring 311 near the front end and a rod part is sleeved with a second return spring 312, the rear end of the inner sleeve 313, two ends of the second reset spring 312 abut against the second outer convex ring 311 and the limiting connecting sleeve 313 respectively, the limiting connecting sleeve 313 is movably sleeved with the push rod 304, the inner sleeve 302 and the limiting connecting sleeve 313 are fixedly connected to the supporting plate 314, the supporting plate 314 is fixedly connected to the measuring slide block 1, the inner diameter of the outer sleeve 301 is larger than the outer diameter of the cylindrical head at the upper end of the supporting plate 314, a U-shaped notch 315 is arranged at the lower side of the outer sleeve, and the width of the U-shaped notch 315 is larger than that of the supporting plate 314.

Preferably, the two ends of the ejector rod 5 are detachably connected with a measuring contact 7, the measuring contact 7 is of a conical structure, and the end part of the conical structure is a ball head.

Preferably, the lower portion of the telescopic measuring head assembly 3 is fixedly connected to the measuring slide block 2 through a positioning pin 10 and a fixing screw 11.

Preferably, the locking screw 8 abuts against the cushion block 9, and the cushion block 9 is located at the bottom of the ruler installation through hole of the measuring slide block 2 or the ejector rod slide block 4 and contacts with the bottom of the ruler 1.

Preferably, the probe tube of the dial indicator 4 is locked by a screw after being inserted into the mounting hole on the measuring slide block 2, an opening is arranged at the upper part of the mounting hole, and the screw is vertically connected with two sides of the opening.

The use principle is as follows: when measuring the external diameter, as shown in fig. 1, before the measurement, zero setting is carried out to the dial indicator or the dial indicator, when the sphere diameter or the diameter that needs to be measured is A, the adjustment is measured the slider and is fixed to suitable position with the ejector pin slider, it is A to ensure that the distance between the thimble of measuring contact and flexible measuring head subassembly 3 is A, when the subassembly that awaits measuring with flexible measuring head subassembly 3 and measurement contact diameter be A is outer cylinder, the measured data on the dial indicator is B (clockwise rotation is the positive value, anticlockwise rotation is the negative value), then the measuring result is A + B.

When measuring the internal diameter, need to embolia the ruler with measuring the slider reverse for flexible measuring head subassembly 3 is outwards, and the amesdial is inwards, and the measuring method is similar with the external 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.