CN201355229Y

CN201355229Y - Measurement caliper

Info

Publication number: CN201355229Y
Application number: CNU2008202412294U
Authority: CN
Inventors: 吉同兴; 孙常明; 梁秀清; 焦明俊
Original assignee: SJ Petroleum Machinery Co
Current assignee: SJ Petroleum Machinery Co
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-12-02
Anticipated expiration: 2018-12-29

Abstract

The utility model relates to a measurement caliper which is used for measuring the inner and the outer maximum diameters as well as the bottom diameter of a narrow trough, which is provided with two long arms, wherein one end of the two long arms is intersected with each other at a hinge support point to form a caliper, and two foot parts of the caliper are respectively connected with a dial test indicator and a measurement-aid rod, and the caliper foot part on which the dial test indicator and the measurement-aid rod are arranged is provided with a movable joint, and the hinge support point and the movable joint are provided with a dial. The measurement caliper has large measurement range with the outer diameter of 0 to 500 mm and the inner diameter of 25 to 500 mm, thereby better solving the measurement difficulty of the inner and the outer diameters and specifically the bottom diameter of a narrow trough of large-diameter pieces, and improving the measurement precision.

Description

Measure clamp

Technical field

The utility model relates to inside and outside diameter measuring tool, is particularly useful for the measurement in the narrow bottom land of inside and outside major diameter footpath.

Background technology

Existing dial gauge, the milscale measurer of measuring inside and outside diameter is applicable to that smallclothes and measured size are in the measurement on surface, can't measure the narrow bottom land of inside and outside major diameter footpath.In reality is produced, to the major diameter part, for example diameter is at the part of 200～500mm, the measurement in narrow bottom land footpath on its endoporus, the indirect method of measurement of normally taking clamp to match with par is finished, and the measurement in narrow bottom land footpath on its cylindrical, then be to take in narrow groove, to find the maximum end directly to be worth with the thin slice clamp earlier, keep clamp to open apart from constant, it is shifted out part, correlation data is finished on ruler again.These ways are difficult to guarantee the precision measured, and pretty troublesome.

Summary of the invention

The purpose of the utility model provides a kind of measurement clamp, and this measurer not only can be measured endoporus, outside diameter easily, and is particularly useful for the measurement in the narrow bottom land of inside and outside major diameter footpath, and measuring accuracy reaches the centimillimetre level.

Measurement clamp provided by the utility model, have two long-armed, two arms, one end meets at a hinged point, form clamp, two foots of clamp connect a dial gauge and respectively and help measuring staff, dial gauge and help the pincers foot at measuring staff place to be provided with turning joint, in described hinged point and turning joint place, be provided with index dial.Described two long-armedly are hinged by snap head bolt and nut thereof, and the index dial at hinged some place is arranged on the end face of snap head bolt.Described turning joint is made of with long-armed the linking by lock-screw of inserting wherein pincers pin piece, and the index dial of turning joint place is arranged on the surface of pincers pin piece.Described two long-armed be symmetrical arched arm.

When utilizing the utility model to measure outside diameter, dial gauge is done relative installation with helping measuring staff between two arms of clamp, be that contact is relative, by turning joint and index dial, make the contact stem of dial gauge and help measuring staff to be located along the same line, promptly be positioned at radially, its accuracy guarantees by the reading of index dial, and certain the external diameter worker that is who reads on the dial gauge claims actual tolerance value under the size; When measuring diameter of bore, dial gauge is done oppositely to install with helping measuring staff, during measurement operation as before.Because the dial gauge contact stem in this measurer and help measuring staff all can reach in the narrow groove is so the footpath, the end of the narrow groove of inside and outside major diameter also can be measured easily.

The utility model has the advantages that:

1, both can measure external diameter with a kind of measurer, also can measure internal diameter, especially can conveniently realize the measurement in narrow bottom land footpath.

2, because dial gauge and help measuring staff to be mounted on the long-armed clamp, so measurement range is big, external diameter is at 0～500mm, and internal diameter is at 25～500mm, fabulous solution produce in the difficulty accurately measured of the inside and outside footpath of major diameter part.

3, adopt index dial to control that the subtended angle relation is to the influence of measuring accuracy between the turning joint of three places, simple cumulative errors are little, make this measurer precision reach 0.01mm and reliable, can carry out accurate measurement.

Description of drawings

Fig. 1 is the utility model structure principle chart;

Fig. 2, Fig. 3 are clamp two arm hinged place structural representations, and Fig. 3 is Fig. 2 vertical view;

Fig. 4, Fig. 5 are for helping place, measuring staff place structural representation, and Fig. 5 is the vertical view of Fig. 4;

Fig. 6, Fig. 7 are place, dial gauge place structural representation, and Fig. 7 is the A-A cut-open view of Fig. 6.

Embodiment

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

Referring to Fig. 1, the utlity model has long-armed 1 of two arcs, two arcs long-armed 1 symmetrical, one end is hinged, and forms clamp, and this hinged place is provided with index dial 2, at the other end, be two foots of clamp, connect dial gauge 3 respectively and help measuring staff 5, when the nominal size of measured piece changes, two long-armed 1 subtended angles can change thereupon, be to guarantee measuring accuracy, the contact stem 3a of dial gauge with help measuring staff 5 to be located along the same line, promptly radially at circle, so at dial gauge 3 with help place, measuring staff 5 places to be provided with turning joint, make it to do corresponding rotation, accurate for guaranteeing it, in this two turning joint place index dial 4 and index dial 6 are set.Operation is easy during for measurement, can be by converting when design, relative angle value on 3 index dials is identified with the same numbers mark, for example, when showing that two arm subtended angles are 160 ° on the index dial 2, after adjusting dial gauge 3 and helping the degree of tilt of measuring staff 5, also be shown as 160 ° respectively on index dial 4 and the index dial 6, then the contact stem 3a of dial gauge with help measuring staff 5 to be located in same straight line, promptly measurer has just just been put.Referring to Fig. 2, Fig. 3, two long-armed 1 are hinged by snap head bolt 7 and nut 8, and index dial 2 is arranged on the end face of snap head bolt 7.Referring to Fig. 4, Fig. 5 helps the turning joint at measuring staff 5 places places, by pincers pin piece 9 with insert long-armed 1 linking by lock-screw 10 and to constitute wherein, index dial 6 is arranged on the surface of pincers pin piece 9, help measuring staff 5 peg graft or the hole of thread connection on pincers pin piece 9 in.Referring to Fig. 6, Fig. 7, the turning joint at dial gauge 3 places places, by pincers pin piece 11 with insert wherein another and long-armed 1 link by lock-screw 12 and to constitute, index dial 4 is arranged on the surface of pincers pin piece 11, and dial gauge 3 is clamped in the open pore that clamps on the pin piece 11 by lock-screw 13.

Claims

1. measurement clamp, it is characterized in that, have two long-armed, two arms, one end meets at a hinged point, forms clamp, two foots of clamp, connect a dial gauge and respectively and help measuring staff, dial gauge and help the pincers foot at measuring staff place to be provided with turning joint in described hinged point and turning joint place, is provided with index dial.

2. measurement clamp according to claim 1 is characterized in that: described two long-armedly are hinged by snap head bolt and nut thereof, and the index dial at this hinged some place is arranged on the end face of snap head bolt.

3. measurement clamp according to claim 1 is characterized in that: described turning joint, constitute with long-armed the linking of inserting wherein by pincers pin piece by lock-screw, and the index dial of turning joint place is arranged on the surface of pincers pin piece.

4. measurement clamp according to claim 1 is characterized in that: described two long-armed for symmetrical arched arm