For measuring measurer and the measuring method of casing inner ring shape locating slotTechnical field
The present invention relates to the measuring method of a kind of measurer and measurer, particularly relating to a kind of measurer for measuring casing inner ring shape locating slot and measuring method.
Background technology
Integral ring-shaped steel casing is one of difficult processing parts in aeromotor, and casing inner chamber often has many places annular positioning groove, and feature is: groove width narrow (0.7 ~ 1.5mm), and cell wall is thin, yielding, and size is difficult to control.The formation face of cylinder, groove both sides, the i.e. lateral surface on the formation face of cylinder, inner side of groove, the medial surface on the formation face of cylinder, outside of groove, and high to the dimensional accuracy of external diameter and internal diameter.Generally processed by the grooving cutter of dedicated custom.But after process finishing, because groove width is very narrow, as Fig. 1, the groove width of annular positioning groove 101,102,103,104 is 0.7 ~ 1.2mm, general standard measurer cannot stretch into groove inside, the face of cylinder, design drawing General Requirements annular positioning groove both sides inside/outside diameter size has higher precision, and as seen from Figure 1, inside/outside diameter size is all difficult to directly measure.
Usually the method for indirect inspection was adopted in the past in processing, a kind of is internal diameter size by the face of cylinder outside measure annular locating slot, measure the outside dimension in groove width indirect inspection inside cylindrical face again, but because the face of cylinder, both sides allows to there is coaxiality error, groove width change in size is larger, this measuring method cannot accurately measure the outside dimension of inner cylinder face, simultaneously when running into the situation of annular positioning groove 103 in similar Fig. 1, groove width length bar is because the interference of the cell wall of annular positioning groove 102, make it cannot in insertion groove, be difficult to the outside dimension of indirect inspection to inside cylindrical face, another kind method is measured by three-dimensional gauge, but the scope limiting its measurement of the length of measuring head diameter size and probe, also the size of annular positioning groove in the similar Fig. 1 of metering is difficult to, the structure of especially similar annular positioning groove 103, also because of the reason of gauge head size and groove width, groove internal measurement corresponding size cannot be stretched into.
In order to overcome the problems referred to above, traditional way adopts to cut the methods such as half sampling observation as destroyed, and the method high manpower and materials needing at substantial of financial cost on the one hand; Be that measuring process is loaded down with trivial details on the other hand, the cycle is long, and complicated operation is not easy to Real-Time Monitoring, and the measurement effect of locating narrow groove size is all undesirable.
Summary of the invention
The object of this invention is to provide a kind of measurer being suitable for measuring the narrow groove of casing, this measurer solves the technical matters measured external diameter or the internal diameter on the face of cylinder that annular positioning groove is formed by the corresponding span between pawl head.
In order to solve the problems of the technologies described above, the invention provides a kind of measurer for measuring casing inner ring shape locating slot, comprise: left and right side measuring claw, the measuring junction of described measuring claw is provided with pawl head, and draws external diameter or the internal diameter on the face of cylinder that annular positioning groove is formed by the corresponding span between two pawl heads; And left and right side measuring claw is connected by link assembly, and regulate the distance between two measuring claws by described link assembly, to regulate corresponding span.
Further, in order to realize the measurement to described external diameter or internal diameter, described two pawl heads are stuck in annular positioning groove to be measured respectively, and the inner side of its pawl head contacts with the respective inner of annular positioning groove respectively, span between the inner side passing through obtained current two pawl heads, draws described external diameter; Or the respective outer face of annular positioning groove is withstood in the outside of described two pawl heads respectively, span between the outside passing through obtained current two pawl heads, draws described internal diameter.
Further, in order to obtain the distance between two measuring claws, so that the described external diameter of follow-up acquisition or internal diameter, the measuring claw being positioned at either side is provided with a gauge outfit installation position, and the measurement section of this gauge outfit is for measuring the distance between two measuring claws.
Further, in order to better solve the measurement problem of the distance between two measuring claws, described left and right side measuring claw is L-shaped respectively, and is left and rightly symmetrical arranged, described link assembly comprises: at least one connecting rod, and described left and right side measuring claw is respectively equipped with the through hole being suitable for connecting rod and passing; Described measuring claw to be coordinated with through hole by connecting rod and slides, and realizes the distance between adjustment two measuring claw; And either side measuring claw is also provided with the measurement through hole that the measurement section that is suitable for gauge outfit passes.
On the other hand, present invention also offers a kind of measuring method for the narrow groove of casing, this measuring method solves the technical matters measured external diameter or the internal diameter on the face of cylinder that annular positioning groove is formed by the corresponding span between pawl head.
In order to solve the problems of the technologies described above, the invention provides a kind of measuring method for the narrow groove of casing, comprising the steps: step S1, determine the corresponding span between two pawl heads; Step S2, measures external diameter or the internal diameter on the face of cylinder respectively according to corresponding span.
Further, the method for the span determined in described step S1 between two pawl heads comprises: between the inner side of two pawl heads span defining method or two pawl heads outside between span defining method.
Span defining method between described inner side, comprising: described two pawl heads are stuck in annular positioning groove to be measured respectively, and the inner side of its pawl head contacts with the respective inner of annular positioning groove respectively, span between the inner side passing through obtained current two pawl heads.
Span defining method between described outside, comprising: the respective outer face of annular positioning groove is withstood in the outside of described two pawl heads respectively, span between the outside passing through obtained current two pawl heads.
Further, in order to realize gauge outfit calibration, described measuring method also comprises: step S0, and gauge outfit is calibrated, that is, before step S1 implements, to for obtain described measuring claw the gauge outfit of spacing calibrate.
Further, if measure described external diameter, then the method for the gauge outfit calibration in described step S0, comprising: be stuck in and slip gauge two ends by two pawl heads, and the length of this slip gauge, slightly larger than external diameter, realizes gauge outfit calibration; If measure described internal diameter, then the method for the gauge outfit calibration in described step S0, being comprised: the spacing being adjusted the outside of two pawl heads by a milscale, makes it be slightly less than internal diameter to be measured, realizes gauge outfit calibration.
Further, in order to obtain surveyed external diameter or internal diameter, the external diameter on the face of cylinder or the method for face of cylinder internal diameter is measured respectively according to corresponding span in described step S2, comprise: size when being calibrated with slip gauge or milscale respectively by the reading of described gauge outfit is subtracted each other or is added, with obtain survey external diameter or internal diameter.
Technique scheme of the present invention has the following advantages compared to existing technology: (1) the present invention draws external diameter or the internal diameter on the face of cylinder that annular positioning groove is formed by the corresponding span between two pawl heads, cuts half sampling observation without the need to carrying out destruction to annular positioning groove; (2) this measurer all can be able to be measured various annular positioning groove, and its general-purpose capability is strong; (3) structure of the present invention is simple, and it is convenient to measure, the easy left-hand seat of operating personnel.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the part sectioned view of annular positioning groove in described casing;
Fig. 2 is the structural representation of described measurer;
Fig. 3 is the structural representation of described measuring claw and the enlarged drawing of pawl head;
Fig. 4 is operating diagram when annular positioning groove and measurer are measured in casing;
Annular positioning groove when Fig. 5 is measurement external diameter and the operating diagram of measurer;
Annular positioning groove when Fig. 6 is measurement internal diameter and the operating diagram of measurer;
Fig. 7 shows the another kind of embodiment of described measurer;
Fig. 8 is the process flow diagram of the described measuring method for measuring casing inner ring shape locating slot.
Wherein, annular positioning groove 101,102,103,104, the medial surface 110 of annular positioning groove, the lateral surface 120 of annular positioning groove, measuring claw 2, pawl head 210, the inner side 211 of pawl head, the outside 212 of pawl head, connecting rod 220, spring 230, gauge outfit 3, the measurement section 301 of gauge outfit.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Embodiment 1
Fig. 1 shows the part sectioned view of annular positioning groove in described casing.
Fig. 2 shows the structural representation of described measurer.
Fig. 3 shows the structural representation of described measuring claw and the enlarged drawing of pawl head.
Operating diagram when Fig. 4 shows that in casing, annular positioning groove and measurer are measured.
As shown in Figures 1 to 4, a kind of measurer for measuring casing inner ring shape locating slot, comprise: left and right side measuring claw, the measuring junction of described measuring claw 2 is provided with pawl head 210, and draws external diameter or the internal diameter on the face of cylinder that annular positioning groove is formed by the corresponding span between two pawl heads 210; And left and right side measuring claw is connected by a link assembly, and regulate the distance between two measuring claws by this link assembly, to regulate corresponding span.Wherein, span between span and the outside 212 of two pawl heads 210 between the inner side 211 of two pawl heads 210 that the implication of the corresponding span difference that is: the medial surface 110 of annular positioning groove or the lateral surface 120 of annular positioning groove is corresponding.
Fig. 5 shows annular positioning groove when measuring external diameter and the operating diagram of measurer.
Fig. 6 shows annular positioning groove when measuring internal diameter and the operating diagram of measurer.
Preferably, as shown in Figure 5, the size of described pawl head 210 is less than the groove inside dimension of annular positioning groove, can snap in make described pawl head 210 or hook in described annular positioning groove.Concrete, described two pawl heads 210 are stuck in annular positioning groove to be measured respectively, and the inner side 211 of its pawl head contacts with the respective inner 110 of annular positioning groove respectively, and span between the inner side 211 passing through obtained current two pawl heads 210, draws described external diameter.
Or as shown in Figure 6, the respective outer face 120 of annular positioning groove is withstood in the outside 212 of described two pawl heads 210 respectively, span between the outside 212 passing through obtained current two pawl heads 210, draws described internal diameter.
Preferably, as shown in Figure 2, the measuring claw 2 being positioned at either side is provided with gauge outfit 3 installation position, and the measurement section 301 of this gauge outfit, for measuring the distance between two measuring claws, namely launches the distance between two test pawls by connecting rod 220.Concrete, the measurement section 301 of this gauge outfit is measured for the distance of sliding on link assembly to measuring claw 210.Optionally, also can directly directly be measured by high-precision gage by span between the outside 212 to span between the inner side 211 of two pawl heads 210 or two pawl heads 210, to obtain shown external diameter or internal diameter.
As shown in figures 1 and 3, described left and right side measuring claw is L-shaped respectively, and to be left and rightly symmetrical arranged, described link assembly comprises: show two connecting rods 220 at least one connecting rod 220(Fig. 2), and described left and right side measuring claw is respectively equipped with the through hole being suitable for connecting rod 220 and passing; Described measuring claw 210 is coordinated with through hole by connecting rod 220 and slides, and realizes the distance between adjustment two measuring claw 2; And either side measuring claw 2 is also provided with the measurement through hole that the measurement section 301 that is suitable for gauge outfit passes.
Optionally, described left and right side measuring claw is also provided with the pin (not shown) being suitable for positioning connecting rod 220, namely when described measurer is positioned at measured position, and after determining corresponding span, by described pin, the distance between two measuring claws 2 is locked, avoid producing error in operation.
Fig. 7 shows the another kind of embodiment of described measurer.
Optionally, described connecting rod 220 is through the sheathed spring 230 in outer link portion of a measuring claw 2, the two ends of this spring 230 are connected with the outer end in this outer link portion and the lateral wall of measuring claw 2 respectively, to play the power to this measuring claw 2 one directions, this power gives the force direction of this measuring claw 2 contrary with the measurement section 301 of gauge outfit, makes this measuring claw 2 be subject to an equilibrant, namely, the distance of left and right side measuring claw is locked, and avoids producing error in operation.
Facts have proved, this measurer has Measurement sensibility, accurately, the advantages such as method of operating is simple, and the measuring accuracy of measurer can be changed by conversion gauge outfit, by the measurement range using the connecting rod of different size can change measurer, measure annular locating slot, the highly versatile of especially narrow groove, the external diameter on the face of cylinder that the annular positioning groove that this measurer solves steel casing part is formed and the measurement of internal diameter size, annular positioning groove, the processing of especially narrow groove provides reliable beasurement base, makes the measurement of similar annular positioning groove size no longer become a difficult problem.In addition, this measurer can also be widely used in the measurement of other similar workpiece.
Embodiment 2
Fig. 8 shows described for measuring the process flow diagram of the measuring method of casing inner ring shape locating slot.
As shown in Figures 1 to 8, embodiment 1 basis present invention also offers a kind of measuring method for the narrow groove of casing.
The described measuring method for the narrow groove of casing, comprises the steps:
Step S1, determine the corresponding span between two pawl heads 210, namely, obtain the medial surface 110 of annular positioning groove or the lateral surface 120 of annular positioning groove distinguish two pawl heads 210 of correspondence inner side 211 between span between span and the outside 212 of two pawl heads 210, and the concept of corresponding span is defined in embodiment 1.
Step S2, measures external diameter or the internal diameter on the face of cylinder respectively according to corresponding span.
Further, the method for the span determined in described step S1 between two pawl heads comprises: between the inner side of two pawl heads span defining method or two pawl heads outside between span defining method.
Wherein, span defining method between described inner side, comprising:
Described two pawl heads are stuck in annular positioning groove to be measured respectively, and the inner side of its pawl head contacts with the respective inner of annular positioning groove respectively, span between the inner side passing through obtained current two pawl heads.
Span defining method between described outside, comprising:
The respective outer face of annular positioning groove is withstood in the outside of described two pawl heads respectively, span between the outside passing through obtained current two pawl heads 210.
Also implementation step S0 before implementing in step S1, gauge outfit calibration, that is, to for obtain described measuring claw 2 the gauge outfit of spacing calibrate.Concrete, if measure described external diameter, then the method for the gauge outfit calibration in described step S0, comprising: be stuck in and slip gauge two ends by two pawl heads, and the length of this slip gauge, slightly larger than external diameter, realizes gauge outfit calibration.Or if measure described internal diameter, then the method for the gauge outfit calibration in described step S0, being comprised: the spacing being adjusted the outside of two pawl heads by a milscale, makes it be slightly less than internal diameter to be measured, realizes gauge outfit calibration.Wherein, gauge outfit calibration also can be called gauge outfit his-and-hers watches; It is slightly wide that the length of slip gauge refers to slightly larger than external diameter external diameter span between the inner side 211 of two pawl heads being calibrated to the face of cylinder formed than ring groove to be measured, is namely no more than 0.5mm; One milscale adjusts the spacing in the outside of two pawl heads, and the internal diameter that the span that makes it be slightly less than between outside 212 that internal diameter to be measured refers to two pawl heads is calibrated to the face of cylinder formed than ring groove to be measured is slightly narrow, is namely no more than 0.5mm.
Measure the external diameter on the face of cylinder or the method for face of cylinder internal diameter respectively according to corresponding span in described step S2, comprising: size when being calibrated with slip gauge or milscale respectively by the reading of described gauge outfit 3 is subtracted each other or is added, with obtain survey external diameter or internal diameter.
Concrete, the length L of described slip gauge1length L shown by-gauge outfitx=survey external diameter Lw;
The width L of milscale2length L shown by+gauge outfitx=survey internal diameter Ln;
Optionally, also can directly directly be measured by high-precision gage by span between the outside 212 to span between the inner side 211 of two pawl heads 210 or two pawl heads 210, to obtain shown external diameter or internal diameter.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.