CN201407985Y

CN201407985Y - Simple straightness measuring instrument of long stem piece

Info

Publication number: CN201407985Y
Application number: CN2009200714237U
Authority: CN
Inventors: 王其军; 陆勤; 徐祥伟; 覃捷
Original assignee: SHANGHAI BIAOWU HIGH-STRENGTH FASTENER Co Ltd
Current assignee: SHANGHAI BIAOWU HIGH-STRENGTH FASTENER Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-02-17
Anticipated expiration: 2019-04-30

Abstract

The utility model relates to a simple straightness measuring instrument of long stem piece. The measurement instrument comprises a pair of support stands, a thick guide rail and a thin guide rail which horizontally span between the support stands and are mutually parallel, and a dial indicator fixed on the thick guide rail, wherein a measuring flat head of the dial indicator is arranged between the thick guide rail and the thin guide rail, the measuring instrument further comprises two sliding blocks which can slide along the thick guide rail and the thin guide rail, and spring clamping devices are arranged on the sliding blocks. The simple straightness measuring instrument of long stem piece ingeniously utilizes the dial indicator and the simple movable spring clamping mechanisms to enable the measuring flat head of the dial indicator to contact the most curved part of bolts to measure the straightness of the bolts. The measuring instrument of the utility model has small design volume, is light, can be carried about, and can measure at any time according to practical demands of production, lowers the influence and handover difficulty of checking links on the production progress, accelerates the handover among links of the products, and reduces the waiting time.

Description

A kind of simple and easy Instrument for Straightness of long pole

Technical field

The utility model relates to a kind of mechanical measurement instrument, particularly a kind of simple and easy Instrument for Straightness of long pole.

Background technology

Whether long pole need be tested the linearity tolerance by quality requirements, qualified to differentiate product.The production run that influences linearity has multiple tracks, and cold-heading molding, thermal treatment, transportation all can cause product section or in batches crooked, must fast detecting in the transfer of product or handshaking, check and accept goods, not influence the manufacturing schedule of product.

Existing detection method has following two kinds:

1. rolling clearance gauge method on the leveling board: error is big, mainly is that the detection position is determined that by artificial visual cause measuring out of true easily, the smooth leveling board in working site also is not easy to find, and testing efficiency is low.

2. Instrument for Straightness detects: the measuring accuracy height, but apparatus expensive, volume is big, be inconvenient to carry, field test is big to device damage, must be placed in inspection center, can not accomplish that production site detects, with producing with inspection, and equipment adjustment process complexity, the practicality that requires for fast detecting in the production run is not high.

Therefore, according to the production demand of reality, the fast simple Instrument for Straightness that satisfies under certain measuring accuracy condition is in demand.

Summary of the invention

The purpose of this utility model exactly in order to solve the problem that above-mentioned prior art exists, and provides a kind of simple and easy Instrument for Straightness of long pole, and this measuring instrument can be at the linearity that satisfies the fast detecting product under certain measuring accuracy condition.

The purpose of this utility model is achieved in that a kind of simple and easy Instrument for Straightness of long pole, this measuring instrument comprises a pair of bearing, horizon crossing is between described bearing and thick guide rail that is parallel to each other and thin guide rail, be fixed in the dial gauge on the thick guide rail, the test tack of described dial gauge is located between thick guide rail and the thin guide rail, described measuring instrument comprises that also two are provided with thick guide rail trepanning and thin guide rail trepanning and correspondingly are set in thick guide rail and the identical slide block of structure on the guide rail carefully, described slide block can move along thick guide rail and thin guide rail, described slide block is provided with spring holding device, described slide block has a screw of the thin guide rail trepanning of a radial communication near thin guide rail place, branch head screw screws in a described screw, to locate described slide block;

Described spring holding device comprises that the upper end is provided with lifting cap and terminal threaded push rod, holder, upper holder block, lower lock block, spring, described holder is located at the top of described slide block, and its end face has a through hole, described push rod passes described through hole, and push rod end thread and described upper holder block threaded hole that end face is opened be connected, by promoting the push rod compression spring upper holder block is lifted, then sample is placed on the lower lock block, unclamp push rod, utilize spring to recover to make upper holder block cooperate fixedly sample with lower lock block, described spring is placed on the push rod between described holder and the upper holder block, and described lower lock block is fixed in the bottom of slide block;

A slide block in described two slide blocks, its spring holding device bottom accompanies a plug, has a blind hole that is complementary with the pointed shape of tested long pole on the face of described plug with respect to another slide block.

The simple and easy Instrument for Straightness of the utility model, design volume is little, and is light and handy, can carry, can detect at any time, reduce influence and the handing-over difficulty of test stage manufacturing schedule according to the actual needs of producing, accelerate the handing-over between each link of product, reduced the stand-by period.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of slide block among Fig. 1;

Fig. 3 is the front view of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1 to Fig. 3, a kind of simple and easy Instrument for Straightness of long pole, this measuring instrument comprises a pair of bearing 1, horizon crossing is between described bearing 1 and the thick guide rail that is parallel to each other 2 and thin guide rail 3, be fixed in the holder 6 on the thick guide rail 2, dial gauge 4 inserts in the dial gauge holder 6, its test tack exposes the holder lower end, be used to contact the bight portion of tested long pole, described measuring instrument also comprises two slide blocks 5 that structure is identical, this slide block 5 is provided with thick guide rail trepanning 57 and thin guide rail trepanning 58 also correspondingly is set on thick guide rail 2 and the thin guide rail 3, can be along thick guide rail 2 and thin guide rail 3 move left and right.

In the simple and easy Instrument for Straightness of above-mentioned long pole, described slide block 5 close thin guide rail places have a screw 512 of the thin guide rail trepanning of a radial communication, and branch head screw 59 screws in a described screw 512, to locate described slide block.

In the simple and easy Instrument for Straightness of above-mentioned long pole, also be provided with a spring holding device on the described slide block 5, described spring holding device comprises that the upper end is provided with the push rod 53 that promotes cap 54, holder 52, upper holder block 55, lower lock block 56, spring 510, described holder 52 is located at the top of described slide block 5, and its end face has a through hole, described push rod 53 passes this through hole, the lower end of push rod 53 is connected with upper holder block 55, have in upper holder block 55 upsides one with the mate with threaded holes of push rod 53, described spring 510 is placed on the push rod 53 between holder 52 and the upper holder block 55, described lower lock block 56 is fixed in the bottom of slide block 5, have thin guide rail trepanning 58 on the lower lock block 56, upper holder block 55 can last drop-downly be put and move up and down with what promote cap 54, cooperates the sample that is fixedly clamped with lower lock block 56;

In the simple and easy Instrument for Straightness of above-mentioned long pole, a slide block in described two slide blocks 5, accompany a plug 51 on its spring holding device, have a blind hole 511 that is complementary with the pointed shape of tested long pole on the face of this plug 51 with respect to another slide block, as tested long pole is screw, then the shape of this blind hole 511 needs to be complementary with screw-tipped, is taper shape.

The utility model utilizes dial gauge and simple and easy removable spring holding device cleverly, make the bight portion of test tack contact screw of dial gauge, by rotating the screw of being clamped by spring holding device, the bight portion of screw swings up and down with the center line of clamping device, thereby the test tack of dial gauge is moved up and down, show by the dial gauge reading, directly read the maximal value and the minimum value of reading, the difference of this two numerical value i.e. the linearity measured value of screw for this reason, thereby whether overproofly can draw by comparison with the standard permissible value. can know whether this screw is qualified, and whether product can be accepted.

Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims

1. the simple and easy Instrument for Straightness of a long pole, this measuring instrument comprises a pair of bearing, horizon crossing is between described bearing and thick guide rail that is parallel to each other and thin guide rail, be fixed in the dial gauge on the thick guide rail, the test tack of described dial gauge is located between thick guide rail and the thin guide rail, it is characterized in that, described measuring instrument comprises that also two are provided with thick guide rail trepanning and thin guide rail trepanning and correspondingly are set in thick guide rail and the identical slide block of structure on the guide rail carefully, described slide block can move along thick guide rail and thin guide rail, described slide block is provided with spring holding device, described slide block has a screw of the thin guide rail trepanning of a radial communication near thin guide rail place, branch head screw screws in a described screw, to locate described slide block;

Described spring holding device comprises that the upper end is provided with push rod, holder, upper holder block, lower lock block, the spring that promotes cap, described holder is located at the top of described slide block, and its end face has a through hole, described push rod passes described through hole, and screw with described upper holder block and to be connected, described spring is placed on the push rod between described holder and the upper holder block, and described lower lock block is fixed in the bottom of slide block;