CN201434657Y

CN201434657Y - Measuring instrument for depth of small hole

Info

Publication number: CN201434657Y
Application number: CN2009201193167U
Authority: CN
Inventors: 林峰
Original assignee: Hangzhou Zhengchida Precision Machinery Co Ltd
Current assignee: Hangzhou Zhengchida Precision Machinery Co Ltd
Priority date: 2009-05-07
Filing date: 2009-05-07
Publication date: 2010-03-31
Anticipated expiration: 2019-05-07

Abstract

The utility model relates to a measuring tool in metal working, which has the characteristics of high measuring accuracy, high detection efficiency and convenient and fast detection for solving the technical problems. The utility model adopts the technical scheme that the measuring instrument comprises a support rod which is vertically arranged on a base, a clamping piece which is horizontally fixed on the support rod and a dial indicator which is positioned on the clamping piece, wherein the dial indicator is vertically positioned on the clamping piece upside down; a clamping bar is horizontally fixed on the support rod and is arranged above the clamping piece; an elastic mandril is vertically positioned on the clamping bar; the axis of the elastic mandril is parallel to that of a measuring rod of the dial indicator; a tubular worktable is also sheathed outside the measuring rod of the dial indicator; the bottom end of the worktable is fixed on the clamping piece; and an end face at the front end of the worktable is used as a measuring datum plane. A spring is arranged in the elastic mandril and respectively applies force on a seat of the elastic mandril and a mandril penetratingin the seat so as to lead the mandril to have potential energy for vertical upward movement.

Description

The aperture depth calibrator

Technical field

The utility model relates to a kind of measuring appliance, and especially metal adds the measurer that adopts man-hour.

Background technology

The problems of measurement of little hole depth always is the difficult problem in the process of metal working, tends to run into a lot of difficulties in testing process.For example, when the blind hole of a diameter phi 0.8mm of processing, need measure the degree of depth of portalling, using vertical dial gauge (shown in Figure 3) directly to measure (the part aperture is placed on the worktable surface up during measurement, injects in the aperture with the upright measurement rod 11 of showing dial gauge and measures) exactly by existing method comes out.But because the reference field that the outside bottom surface A of this part (shown in Figure 2) just measures is a black skin, the data accuracy of measuring is just not high, and efficiency of measurement is also lower.

The utility model content

Technical problem to be solved in the utility model provides a kind of improvement of measuring appliance, and this utensil should be able to overcome the deficiency of above-mentioned background technology, has the high and high characteristics of detection efficiency of measuring accuracy, and easy to detect, quick.

The technical scheme that the utility model provides is: the aperture depth calibrator, comprise the cradling piece that stands on pedestal, be horizontally fixed on clamping element on the cradling piece, be positioned at the dial gauge on the clamping element, it is characterized in that described dial gauge vertically stands upside down to be positioned on the clamping element; Other has a clamping bar to be horizontally fixed on the cradling piece and is positioned at the top of clamping element, vertically locatees an elastic push rod, the sounding rod parallel axes of the axis of elastic push rod and described dial gauge on the clamping bar; The sounding rod of described dial gauge also wears the worktable of a tubulose outward, and the bottom of worktable is fixed on the clamping element, and the end face on worktable top is as the measuring basis face.

One spring is set in the described elastic push rod, and this spring makes push rod have vertically the up potential energy of motion respectively to the pole socket and the push rod application of force of interting in pole socket of elastic push rod.

A button is equipped with on the top of described push rod, and described spring is set on the described push rod.

Principle of work of the present utility model is: carry out zeroing work earlier: by button push rod is moved down with subordinate, after plane, the bottom 7-4 of push rod runs into the top of dial gauge sounding rod 9, pressing sounding rod and is together continued to move down, until the surface of running into worktable, this moment, the top and the worktable surface of dial gauge sounding rod were in same plane, the demonstration numerical value of dial gauge is zero, (the demonstration numerical value as dial gauge is non-vanishing as the reference value of measuring, should regulate the fixed position of dial gauge, or the worktable surface ground it is met the requirements); Then loosing one's grip upwards sets back push rod under the effect of spring force, zeroing work is promptly finished.During measurement, the tested part aperture is inverted down is inserted in the dial gauge sounding rod and makes the sounding rod top arrive at the aperture bottom; Then the outside bottom surface that makes the push rod bottom face push tested part by button down together moves downward, and runs into table plane until the aperture of tested part end face, and data presented is exactly the little hole depth of tested part on the dial gauge at this moment.

The beneficial effects of the utility model are: because the aperture end face that directly utilizes aperture is as reference field, thereby the data precision height that records, error is little, meets design requirement fully; And, significantly improved efficiency of measurement because measurement is convenient and swift, effectively satisfied the production needs.

Description of drawings

Fig. 1 is a main TV structure synoptic diagram of the present utility model.

Fig. 2 is the structural representation of tested part.

Fig. 3 is the principle schematic that existing dial gauge is measured tested part.

Embodiment

As shown in Figure 1, this aperture depth calibrator comprises the cradling piece 10 that stands on pedestal 1, is horizontally fixed on clamping element 3 on the cradling piece, is positioned at the dial gauge 2 on the clamping element; This dial gauge vertically stands upside down and is positioned on the clamping element; Other has a clamping bar 6 to be horizontally fixed on the cradling piece 10, and is positioned at the top of clamping element 3, vertically locatees an elastic push rod 7, the axis of elastic push rod and the sounding rod of described dial gauge 9 parallel axes (preferred two deads in line) on the clamping bar; The sounding rod 9 outer worktable 4 that also wear a tubulose of described dial gauge, the bottom of worktable is fixed on the clamping element, sounding rod can be in the pore of worktable central authorities easy on and off motion (to keep measurement data accurate), the end face on worktable top is as measuring basis face (as preferably, this end face should be made surface level).

Described elastic push rod 7 comprises pole socket 7-3 and the push rod 7-1 that interts in pole socket; For making push rod have the up trend of motion, a spring 8 also is set in the elastic push rod, this spring makes push rod have vertically the up potential energy of motion respectively to the pole socket and the push rod application of force of interting in pole socket of elastic push rod.During concrete the making, spring 8 can be set on (as shown in Figure 1) on the push rod), a button 7-2 is fixed on the top of push rod again, and described spring then can be respectively to button and pole socket applied thrust.

Claims

1, aperture depth calibrator, comprise the cradling piece (10) that stands on pedestal (1), be horizontally fixed on clamping element (3) on the cradling piece (10), be positioned at the dial gauge (2) on the clamping element, it is characterized in that described dial gauge vertically stands upside down to be positioned on the clamping element; Other has a clamping bar (3) to be horizontally fixed on the top that clamping element was gone up and be positioned to cradling piece (6), vertically locatees an elastic push rod (7), the axis of elastic push rod and the sounding rod of described dial gauge (9) parallel axes on the clamping bar; The sounding rod of described dial gauge also wears the worktable (4) of a tubulose outward, and the bottom of worktable is fixed on the clamping element (3), and the end face on worktable top is as the measuring basis face.

2, aperture depth calibrator according to claim 1, it is characterized in that being provided with in the described elastic push rod (7) spring (8), this spring to the pole socket (7-3) of elastic push rod and push rod (7-1) application of force in pole socket interted, makes push rod have vertically the up potential energy of motion respectively.

3, aperture depth calibrator according to claim 2 is characterized in that a button (7-2) is equipped with on the top of described push rod, and described spring is set on the described push rod.