CN2190780Y

CN2190780Y - Inside micrometer caliper

Info

Publication number: CN2190780Y
Application number: CN 93232326
Authority: CN
Inventors: 王启东
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-18
Filing date: 1993-11-18
Publication date: 1995-03-01
Anticipated expiration: 2003-11-18

Abstract

The utility model relates to an inside micrometer caliper. The utility model comprises a measuring head (1) at the left end of a semicircular annular caliper frame (2), a force measuring device and a locking device arranged at the upper end surface of the right end, and a micrometer head part in the right end of the caliper frame (2) The micrometric screw of the micrometer head part is connected with the force measuring device through a cone gear and a shaft, and the right most end of the micrometer head part is provided with a measuring head (6). The utility model has compact and simple structure, convenient use, easy mastery of the operator and high measuring precision, and can still carry out accurate measurement of the inner hole under the condition that the cutter bar is reserved in the hole.

Description

Inside micrometer caliper

The utility model belongs to the measurer technical field.

In mechanical processing process, mainly use measurers such as micrometer inside caliper, dial bore gage to measure at present for the measurement of endoporus.Processing is during some slotted hole on boring machine, because that knife bar overhangs is oversize, and the boring bar of supporting before and after needing to use.Boring bar one end connects with main shaft, and an end and column link.In the trial cut process, owing to boring bar can not be withdrawn from the hole, as to withdraw from the hole, then resetting error is too big, loses the tool setting effect.Therefore, owing to leave boring bar in the hole, when carrying out hole measuring, can't use the conventional at present micrometer inside caliper that uses, measurers such as dial bore gage are measured.At present the boring machine operator uses clamp to carry out similarly comparing and measuring in the boring overall process, and use the shortcoming of clamp to be: measuring error is big, the dimension correction difficulty, and the operator is difficult to grasp, goes out waste product etc. easily.

The objective of the invention is to design a kind of simple in structure, operating personnel are easy to grasp, the measuring accuracy height, and in the hole, keep under the situation of knife bar, still can carry out the micrometer inside caliper of accurate hole measuring.

The utility model comprises: the semi-round ring shape chi frame of interior dress heat insulation, its improvements are: the left end of chi frame is equipped with a gauge head, on the right-hand member upper surface of chi frame a device for measuring force is housed, chi frame right-hand member inside is the micrometer head part, micrometer head partly comprises, left end has the male splines right-hand member and has the micrometric screw that external thread right-hand member top has a circular conical surface, micrometric screw is connected with a pair of intermeshing conical gear by the male splines of left end, the micrometric screw left end is sleeved in the plug, plug is fixed in the threaded sleeve, whole micrometric screw is sleeved in the threaded sleeve and the right-hand member external thread and the threaded sleeve screw-internal thread fit of micrometric screw, the fixed sleeving that has scale is screwed on threaded sleeve, setting nut is spun on the threaded sleeve, joint is fixed on the circular conical surface of micrometric screw, fastening nut fixture splice and gauge head, joint and fastening nut are fixed in the microdrum, the join screw of lower end and device for measuring force of the conical gear of the upper end of axle by key and micrometer head, nut joins, and device for measuring force comprises screw, change cap and be sleeved on screw and change the interior ratchet of cap, stage clip.

Principle of work: during measurement, micrometer inside caliper put into treat gaging hole, boring bar places in the middle of the semi-round ring shape chi frame, at first allow left gauge head contact workpiece, rotate device for measuring force then, driving conical gear by key rotates, the conical gear rotation drive left end that has female spline has the male splines right-hand member and has the micrometric screw rotation that external thread right-hand member top has circular conical surface, thereby drive joint, fixed sleeving, right gauge head and microdrum had not only moved around axis rotation own but also along axis direction, make right gauge head contact workpiece, rotating locking apparatus is fixed on the workpiece chi frame, thereby reaches the purpose of hole dimension in the measuring workpieces.

The utility model is in the process of measuring endoporus, because a device for measuring force is arranged, conical gear that pair of matched is closed and conical gear are connected with spline with micrometric screw, thereby function as follows:

1, because device for measuring force is arranged, improved the measuring accuracy of micrometer inside caliper, can prevent like this, improved precision 2-3 level than traditional micrometer inside caliper because of the excessive or too for a short time error that causes of exerting oneself.

2, compact conformation, simple has reduced the space occupied area, and operating personnel are easy to grasp, and under the less situation in gap between workpiece endoporus and the knife bar, by left end gauge head extension rod, still can measure.

Embodiment of the present utility model provides in conjunction with the accompanying drawings.

Accompanying drawing 1 is the outside drawing of micrometer inside caliper.

Fig. 2 is the cut-open view of micrometer inside caliper right-hand member structure.

(1), (6) are gauge head among the figure, and (2) are the chi frame, and (3) are heat insulation, (4) be locking device, (5) be device for measuring force, (7) are plug, and (8) are threaded sleeve, (9), (10) are conical gear, (11) be fixed sleeving, (12) are microdrum, and (13) are micrometric screw, (14) be setting nut, (15) be joint, (16) are fastening nut, and (17) are key, (18) be locating sleeve, (19) be axle, (20) are stage clip, and (21), (22) are ratchet, (23) for changeing cap, (24) are screw.

In the present embodiment, make a semi-round ring shape steel chi frame (2), interior dress semi-round ring shape plastics heat insulations (3), adorn a steel gauge head (1) at the left end of chi frame (2), on the right-hand member side of chi frame (2), adorn a device for measuring force (5) and steel locking device (4), micrometer head part (7-18) is sleeved on chi frame (2) right-hand member inside, micrometer head part (7-18) comprising: the left end of steel circular cylindrical micrometric screw (13) is shaped on the male splines right-hand member and is shaped on external thread right-hand member top and is shaped on a circular conical surface, micrometric screw (13) is by spline and the intermeshing conical gear of a pair of steel (9), (10) join, the left end of micrometric screw (13) is sleeved in the hollow plug of steel (7), plug (7) is fixed on again in the cylindric steel threaded sleeve (8), the right-hand member of micrometric screw (13) and threaded sleeve (8) threaded engagement, steel fixed sleeving (11) is screwed on threaded sleeve (8), setting nut is spun on the threaded sleeve (8), joint (15) is fixed on the circular conical surface of micrometric screw (13), fastening nut (16) fixture splice (15) and gauge head (6), fastening nut (16) is sleeved in the cylinder type hollow microdrum (12), the upper end of the steel axle (19) that length is certain connects conical gear (9) by key (17), (10) and be fixed on the locating sleeve (18), the lower end of axle (19) connects the screw (24) of device for measuring force (20-24), change cap (23), device for measuring force comprises screw, change cap and be sleeved on screw and change the interior ratchet (21) of cap, (22) and stage clip (20).

Claims

1, a kind of micrometer inside caliper comprises: the semi-round ring shape chi frame (2) of interior dress heat insulation (3), it is characterized in that: the left end of chi frame (2) is equipped with a gauge head (1), one device for measuring force (5) is housed on the right-hand member upper surface of chi frame (2), chi frame right-hand member inside is micrometer head part (7-18), micrometer head part (7-18) comprises, left end has the male splines right-hand member and has the micrometric screw (13) that external thread right-hand member top has a circular conical surface, micrometric screw (13) is by the male splines and a pair of intermeshing conical gear (9) of left end, (10) be connected, micrometric screw (13) left end is sleeved in the plug (7), plug (7) is fixed in the threaded sleeve (8), whole micrometric screw (13) is sleeved in the threaded sleeve (8) and the right-hand member external thread of micrometric screw (13) and the screw-internal thread fit of threaded sleeve (8), the fixed sleeving (11) that has scale is screwed on threaded sleeve (8), setting nut (14) is spun on the threaded sleeve (8), joint (15) is fixed on the circular conical surface of micrometric screw (13), fastening nut (16) fixture splice (15) and gauge head (6), joint (15) is fixed in the microdrum (12) with fastening nut (16), the upper end of axle (19) is by key (17) and micrometer head the join screw (24) of lower end and device for measuring force (20-24) of the conical gear (10) of (7-18) partly, changeing cap (23) joins, device for measuring force (20-24) comprises, screw (24), change cap (23), and be sleeved on screw (24), change the ratchet (21) in the cap (23), (22), stage clip (20).

2, by the described micrometer inside caliper of claim 1, it is characterized in that: a locking device (4) is housed on the right-hand member upper surface of chi frame (2).