CN2338727Y - Inside mictometer with three probes - Google Patents
Inside mictometer with three probes Download PDFInfo
- Publication number
- CN2338727Y CN2338727Y CN 98224137 CN98224137U CN2338727Y CN 2338727 Y CN2338727 Y CN 2338727Y CN 98224137 CN98224137 CN 98224137 CN 98224137 U CN98224137 U CN 98224137U CN 2338727 Y CN2338727 Y CN 2338727Y
- Authority
- CN
- China
- Prior art keywords
- measuring
- conically shaped
- micrometric screw
- measuring head
- claw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a three-jaw inside micrometer. The utility model is composed of a sleeve barrel, a scale sleeve, a differential barrel and a measuring body. A micrometric screw rod is arranged in the sleeve barrel, one end of the micrometric screw rod is connected with the differential barrel, and the other end is connected with a fulcrum. The external end of the measuring body is provided with a three-jaw measuring head, a conical barrel is also arranged in the measuring body, a steel ball is arranged in the conical barrel, and the steel ball is contacted with the fulcrum in a point contact way. The conical body end of the conical barrel is contacted with the slope on the internal side of the measuring jaw. The utility model has the advantages of automatic centering, high measuring precision, stable indicated value, simple and quick use and the utility model can measure a through hole and a blind hole of a part.
Description
The utility model relates to a kind of measuring appliance, relates in particular to a kind of three-jaw micrometer inside caliper that is used to measure the circular hole internal diameter.
Milscale is that machinery, instrument industry use maximum surveying instruments.The milscale of existing measurement circular hole internal diameter, because the end cap of its measuring body protrudes from the end points of measuring body perisporium, measuring claw is that perisporium from measuring body stretches out simultaneously, therefore this milscale can only be measured caliber and the through hole that certain depth is arranged, for the more shallow blind hole of slotted eye, then the summit owing to its measuring claw can not contact with the bottom surface of tested metering-orifice, so can't measure blind hole.
The purpose of this utility model is exactly in order to overcome the shortcoming of above milscale, and provide a kind of simple in structure, easy to use, promptly can measure the multi-functional micrometer inside caliper that through hole can be measured blind hole again.
The purpose of this utility model is achieved in that a kind of three-jaw micrometer inside caliper, constitute by sleeve, scale cover, microdrum and measuring body, be provided with a micrometric screw in the described sleeve, one end of this micrometric screw is connected with microdrum, the ring end of described measuring body connects measuring head, in divide equally three measuring claws be set, it is characterized in that: the other end of described micrometric screw connects a fore-set; The end cap of described measuring head is a plane, and concordant with the perisporium end points of measuring head; Each vertically is provided with a contact that protrudes the top of three measuring claws, and this contact is concordant with the outer end face of measuring head end cap; The center of circle is pointed in the inboard of three measuring claws, and respectively is provided with an inclined-plane, and described three inclined-planes encircle, and are one " △ " shape; Also be provided with a conically shaped in measuring body, cone one end of this conically shaped contacts with the inclined-plane of each measuring claw inboard, and the other end of conically shaped contacts with the other end of micrometric screw; Also be provided with a steel ball in the described conically shaped, the described fore-set that is connected with micrometric screw is stretched in conically shaped and with described steel ball point and is contacted; Also be provided with a measuring claw resetting means in the described measuring head, reach the torque spring that is connected with this groove by the groove that on each measuring claw, is provided with and constitute.
Because the utility model has adopted above structure, measuring head adopts to divide equally measuring claw is set, make this milscale self-centering, use simple and direct; Contact on the measuring claw is concordant with the end cap outside surface of measuring body, makes when measuring not only can survey through hole but also can survey blind hole, enlarges usable range; Again, utilize the interior steel ball point of fore-set and conically shaped to contact, measuring accuracy height, indicating value are stablized.
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is measuring claw and the resetting means synoptic diagram thereof of embodiment on the utility model.
See also accompanying drawing:
The utility model is made of sleeve 1, scale cover 2, microdrum 3 and measuring body 4.Be provided with a micrometric screw 11 in the sleeve 1, an end of this micrometric screw 11 is connected with microdrum 3, and the end points of micrometric screw 11 also is connected with a ratchet carriage 5.The other end of micrometric screw 11 connects a fore-set 111.The outside of measuring body 4 connects a measuring head 41, all be arranged with three guide slots 411 on the circumferential wall of measuring head 41, also divide equally in the measuring head 41 three measuring claws 412 are set, three measuring claws of cause divide equally by the circumference radian and the inboard of three measuring claws is that the center closes up with the center of circle, therefore can self-centering.Measuring claw advances, moves along the guide slot inwall when withdrawing from, and the outer point of measuring claw 412 is concordant with the orientation notches of measuring head under the general state; The outer end points of each measuring claw 412 vertically is provided with contact 4121 (see figure 3)s of protruding; The inboard of each measuring claw 412 also is respectively equipped with an inclined-plane T, and one " △ " shape is formed in the top obvolvent on described inclined-plane.Also be provided with a conically shaped 413 in measuring body 4, an end of the taper of this conically shaped 413 contacts with the inclined-plane of each measuring claw 412 inboard, and the other end of conically shaped contacts with the other end end face of micrometric screw.In order to improve the precision of measurement, the utility model home position in conically shaped also is provided with a steel ball 414, and the described fore-set 111 that is connected with micrometric screw 11 is stretched in conically shaped 413, and its top contacts with 414 of steel balls.Measure to rotate microdrum, the interlock micrometric screw, micrometric screw drives fore-set and pushes ahead, the end face of fore-set contact with steel ball point in the conically shaped, simultaneously also to a power to steel ball, thereby the promotion conically shaped is to reach.Because an end of conically shaped is taper, and contact, therefore, can regulate the surface of contact of conically shaped and inclined-plane T very like a cork with the inclined-plane of the inboard of measuring claw, thus promotion measuring claw parallel traverse measurement aperture in locating slot.In described measuring head 41, also be provided with one and measure resetting means, constitute by groove 415 that on each measuring claw, is provided with and the torque spring 416 that is connected with this groove.Described torque spring 416 is enclosed within on the torsion spring pin 417 that is connected with measuring head, and it has a pin hook to be embedded on the groove 415 of measuring claw.When measurement finishes the turn microdrum when withdrawing from micrometric screw, cancelled when giving the power of conically shaped, because the centripetal force effect of three torsion springs, make torsion spring drive measuring claw and withdraw from the inclined-plane with conically shaped and automatically reset.
For making the utility model not only energy measurement through hole but also energy measurement blind hole, the end cap 418 of measuring head of the present utility model is designed to a plane, and concordant with the end points of measuring head perisporium.Respectively establish a contact 4121 that protrudes on the top of three measuring claws 412, this contact is surperficial concordant with end cap.Measure during measurement by stressed conically shaped and advance outwards parallel moving, the contact of protruding remain with end cap on same surface level, even object being measured is a very shallow blind hole, end cap and contact also can be kept in touch with the measured hole bottom surface all the time, make to measure accurately.
Claims (2)
1. three-jaw micrometer inside caliper, constitute by sleeve, scale cover, microdrum and measuring body, be provided with a micrometric screw in the described sleeve, one end of this micrometric screw is connected with microdrum, the outer end of described measuring body connects a measuring head, divide equally in the measuring head three measuring claws are set, it is characterized in that: the other end of described micrometric screw connects a fore-set; The end cap of described measuring head is a plane, and it is concordant with the perisporium of measuring head, each vertically is provided with a contact that protrudes the top of three measuring claws, this contact is concordant with the outside surface of measuring head end cap, the center of circle is pointed in the inboard of three measuring claws, and respectively being provided with an inclined-plane, described three inclined-planes encircle, and are one " △ " shape; Also be provided with a conically shaped in measuring body, cone one end of this conically shaped contacts with the inclined-plane of each measuring claw inboard, and the other end of conically shaped contacts with the other end of micrometric screw; Also be provided with a steel ball in the described conically shaped, the described fore-set that is connected with micrometric screw is stretched in conically shaped and with described steel ball point and is contacted; Also be provided with a measuring claw resetting means in the described measuring head, reach the torque spring that is connected with this groove by the groove that on each measuring claw, is provided with and constitute.
2. a kind of three-jaw micrometer inside caliper according to claim 1 is characterized in that: the torque spring in the described resetting means is enclosed within on the torsion spring pin that is connected with measuring head, and a pin hook of torque spring is embedded in the groove set on the measuring claw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224137 CN2338727Y (en) | 1998-05-28 | 1998-05-28 | Inside mictometer with three probes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224137 CN2338727Y (en) | 1998-05-28 | 1998-05-28 | Inside mictometer with three probes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2338727Y true CN2338727Y (en) | 1999-09-15 |
Family
ID=33975076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98224137 Expired - Lifetime CN2338727Y (en) | 1998-05-28 | 1998-05-28 | Inside mictometer with three probes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2338727Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976978A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Air gap measuring tool |
| CN108638222A (en) * | 2018-04-25 | 2018-10-12 | 卢园园 | A kind of three sword formula timber coring lathe tools |
-
1998
- 1998-05-28 CN CN 98224137 patent/CN2338727Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976978A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Air gap measuring tool |
| CN108638222A (en) * | 2018-04-25 | 2018-10-12 | 卢园园 | A kind of three sword formula timber coring lathe tools |
| CN108638222B (en) * | 2018-04-25 | 2020-10-30 | 王长华 | Three-blade type wood coring lathe tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |