CN202793276U

CN202793276U - Device for measuring hole center distance

Info

Publication number: CN202793276U
Application number: CN 201220327770
Authority: CN
Inventors: 徐春平; 李贵树; 李勇; 刘洋
Original assignee: Chengdu Huachuan Electric Parts Co Ltd
Current assignee: Chengdu Huachuan Electric Parts Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2013-03-13
Anticipated expiration: 2022-07-09

Abstract

The utility model discloses a device capable of conveniently measuring and testing a hole center distance in the production field, which is used for measuring the hole center distance of mutually perpendicular first and second holes on a workpiece. The device comprises a bottom plate. A positioning shaft is respectively matched with the bottom plate, a positioning through hole and the second hole. The shaft axis of the positioning shaft is perpendicular to the bottom surface of the bottom plate. A positioning block is provided with positioning surfaces perpendicular to the bottom surface of the bottom plate and parallel to the shaft axis of the positioning shaft. The positioning block slides along a direction perpendicular to the positioning surfaces and the shaft axis of the positioning shaft. A circular cone-shaped section at the middle part of a measurement shaft is matched with the first hole. The two ends of the measurement shaft are respectively in the shape of a cylinder coaxial with the circular cone-shaped section, wherein the radius of each cylinder is r. The cylindrical surfaces of the cylinders are served as measurement surfaces adhered to the positioning surfaces. A proof reading piece is provided with a positioning through hole and proof reading surfaces used for being adhered to the positioning surfaces. The proof reading surfaces are parallel to the axial line of the positioning through hole and the spacing between the proof reading surfaces and the axial line of the positioning through hole is L. Reading variables reflected by a reading unit indicate the position variation of each positioning surface on the positioning shaft respectively during the installation of the proof reading piece and a workpiece. The reading variables, L and r are subjected to arithmetical operation to obtain the hole center distance.

Description

The hole heart is apart from measurement mechanism

Technical field

The utility model relates to a kind of measurement mechanism, especially a kind of be used to measure on the same workpiece two mutually vertical, and the measurement mechanism of the spacing in disjoint hole.

Background technology

Two mutual vertically arranged dead eyes are arranged on the rain shaving electrical machine reducer shell, and the distance between these two dead eyes is one of part quality control index.At present, for the distance between these two dead eyes, usually all adopt three coordinate machine metering, still, three coordinate machine must be placed in the environment of regulation, the instrument volume is large, need special survey crew, Measuring Time is long, efficient is low, cost is high, makes troubles to production, affects manufacturing schedule, can only inspect by random samples, measure in the time of should not producing in batches in the production scene.And always there is foozle in the diameter of actual production mesopore, can not equal absolute some values, but fluctuates in its design size margin tolerance.

The utility model content

Technical problem to be solved in the utility model provides a kind of hole heart of production scene inspection hole heart distance that makes things convenient for apart from measurement mechanism.

The technical scheme that its technical matters that solves the utility model adopts is: the hole heart is apart from measurement mechanism, be used for measuring the hole heart distance in orthogonal the first hole and the second hole on the same workpiece, locating piece, the measurement axle that cooperates with workpiece that this device comprises base plate, be arranged on locating shaft on the base plate and reading device, be slidingly matched with base plate and the check and correction part that cooperates with locating shaft, the check and correction part has a location through hole; The axial line of described locating shaft is perpendicular to the bottom surface on the base plate, and the cooperation section of described locating shaft, coax segments, positioning section are coaxial, and cooperates with positioning shaft hole, positioning through hole, second hole of check and correction part on the base plate respectively; Be provided with two coplanar locating surfaces on the described locating piece, locating surface is perpendicular to the bottom surface on the base plate, and is parallel to the axial line of locating shaft, and actuating unit drives locating piece and slides along the direction perpendicular to locating surface and locating shaft axial line; Described measurement axle is that the cylinder of r forms by the radius at the frustum of a cone section at middle part and its two ends, and described cylinder is coaxial with frustum of a cone section, and the described face of cylinder is measurement face, and the cone diameter scope of described frustum of a cone section and the diameter in the first hole are complementary; Described check and correction part also has at least one and is used for the check and correction face of fitting simultaneously with locating surface, the axis parallel of check and correction face and described positioning through hole, and the spacing between the axial line of check and correction face and this positioning through hole is L, L＞r.

Described actuating unit is the spring shaft assembly, the spring shaft assembly comprises supporting base and the supporting screw thereof that arranges on the base plate, the connecting hole that arranges on the locating piece, and penetrate connecting hole and the interior transmission shaft of supporting screw, transmission shaft has an end of the shaft shoulder to penetrate connecting hole and is connected with locating piece; Transmission shaft penetrates the stop nut again and is connected with supporting base after having the other end of external thread section to penetrate the supporting screw; Also be connected with nut on the external thread section between supporting screw and the connecting hole; Transmission shaft cylindrical cover between setting nut and locating piece has spring.

Be provided with gathering sill on the described base plate, the spigot surface of these gathering sill both sides is perpendicular to locating surface, the both sides of described locating piece are provided with orienting lug, the spigot surface of orienting lug is also perpendicular to locating surface, the shape of orienting lug, size and gathering sill coupling, locating piece is slidingly matched with described base plate with cooperating of described gathering sill by described orienting lug.

Described reading device is the reader that is connected with base plate by dial framework and table folder, the positive press contacts of the gauge head of reader and locating surface.

Described positioning shaft hole has different at least two in position.

Also have three hole coaxial with the second hole on the workpiece, be provided with secondary segment on the described locating shaft this moment, and the size in the 3rd hole of the shape of described secondary segment, size and workpiece is complementary, and secondary segment is coaxial with positioning section.

Described measurement axle consists of one group by at least two, the cone diameter of the frustum of a cone section of every group of each part is different from big to small, and the union of each diameter range contains the actual diameter scope in the first hole of workpiece, and the cylindrical radius r at the measurement face of every group of each part place equates.

Described check and correction part is to have described positioning through hole and two ends are that a pair radius is the master bar of the cylinder of r, the axial line antarafacial of the axial line of master bar and positioning through hole, and the periphery of described cylinder is fitted simultaneously as check and correction face and locating surface.

The positioning through hole of described check and correction part also can mate with the positioning section of locating shaft.

Theoretical value and the r sum of spacing L=the first hole between the axial line of described check and correction face and this positioning through hole and the hole heart distance in the second hole.

The beneficial effects of the utility model are: can be in range ability to the hole heart in two vertical holes of antarafacial on the different cultivars workpiece apart from measuring, the frustum of a cone section of measuring axle can be eliminated the measuring error that the foozle of workpiece causes, and makes measurement more accurate; Interchangeable locating shaft, measurement axle are applicable to the workpiece of different pore size; Transportable locating piece makes reducer shell and similar workpiece that whole device can the different holes of self-adaptation heart distance.Easy to operate, reliable, be applicable to produce in batches Site Detection, be particularly suitable on rain shaving electrical machine reducer shell and the similar workpiece spatial hole heart apart from measurement.

Description of drawings

Fig. 1 is the front view of measurement mechanism of the present utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the front view (wherein part shown in the heavy line is spigot surface) of locating piece among Fig. 1.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the P-P cut-open view of Fig. 3.

Fig. 6 is the front view of a kind of check and correction part (proof-reading block).

Fig. 7 is the vertical view of Fig. 6.

Fig. 8 is the left view of Fig. 7.

Fig. 9 is the upward view of Fig. 6.

Figure 10 is the axonometric drawing of Fig. 6.

Figure 11 is another axonometric drawing of Fig. 6.

Figure 12 is the front view of measuring axle among Fig. 1.

Figure 13 is the front view of locating shaft among Fig. 1.

Figure 14 is a kind of axonometric drawing that the workpiece in orthogonal two holes is arranged.

Figure 15 is the front view (master bar) of another kind of check and correction part.

Figure 16 is the vertical view of Figure 15.

Be labeled as among the figure, the 1-base plate, the 1A-bottom surface, 2-measures axle, the 3-locating piece, 3A-spigot surface, 3B-spigot surface, 4-transmission shaft, the 5-spring, 6-setting nut, 7-supporting base, 8-locating shaft, 9-proofreads part, 10-press strip, 11-dial framework, 12-reader, 13-shows folder, 14-stop nut, the spigot surface of 15-gathering sill, the spigot surface of 16-gathering sill, the 17-gathering sill, 18-positioning shaft hole, 19-packing ring, 21-frustum of a cone section, 30-connecting hole, 31-locating surface, the 32-locating surface, 33-orienting lug, 34-orienting lug, the 41-external thread section, 70-supports screw, and 80-cooperates section, the 81-positioning section, 82-coax segments, 83-secondary segment, the 90-positioning through hole, 91-proofreads face, 100-workpiece, 101-the first hole, 102-the second hole, 103-the 3rd hole.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

Such as Fig. 1～shown in Figure 16, the hole of the present utility model heart is apart from measurement mechanism, this device is used for the measurement of the hole heart distance in the first vertical hole 101 of mutual antarafacial and the second hole 102, this device comprises base plate 1, be provided with gathering sill 17 on the base plate 1, gathering sill 17 is provided with

spigot surface

15,16, locating piece 3 is arranged in the gathering sill 17, actuating unit drives locating piece 3 and is slidingly matched with gathering sill 17 on base plate 1, be provided with a pair of

coplanar locating surface

31,32 on the locating piece 3, this to locating

surface

31,32 with the spigot surface 15 of gathering

sill

17,16 all vertical with the bottom surface 1A of base plate 1; This device also comprises locating shaft 8, reading device, measurement axle 2 and check and correction part 9, the middle part of measuring axle 2 is frustum of a cone section 21, the two ends of measuring axle 2 are that radius is the cylinder of r, described cylinder is coaxial with frustum of a cone section 21, the periphery of cylinder is as measurement face 22, and the diameter in the first hole 101 after the cone diameter scope of frustum of a cone section 21 and the consideration foozle is complementary; Described check and correction part 9 has a location through hole 90 and at least one and is used for the check and correction face 91 of fitting simultaneously with locating

surface

31,32, the axis parallel of this check and correction face 91 and this positioning through hole 90, spacing between the axial line of check and correction face 91 and this positioning through hole 90 is L, L＞r; Described locating shaft 8 is perpendicular to bottom surface 1A, comprise successively coaxially to each other cooperation section 80, positioning section 81, coax segments 82, it cooperates the positioning shaft hole 18 on section 80 and the base plate 1 to be connected, positioning shaft hole 18 is arranged in gathering sill 17 and perpendicular to bottom surface 1A, its positioning section 81 is suitable with the second hole 102 of workpiece, and its coax segments 82 is suitable with the positioning through hole 90 of check and correction part 9.

The utility model hole heart apart from the using method of measurement mechanism is:

At first, determine locating

surfaces

31,32 initial position with check and correction part 9: the positioning through hole 90 that will proofread first part 9 is inserted in locating shaft 8, after the positioning section 81 of positioning through hole 90 and locating shaft 8 or coax segments 82 cooperate, and the dead in line of positioning through hole 90 and locating shaft 8; Actuating unit promotes locating piece 3 and slides, will be automatically so that 9 rotations of check and correction part in the sliding process, until the locating surface 31 of locating

piece

3,32 fit simultaneously proofreads the check and correction face 91 of part 9, so, locating surface 31 after the applying, the distance of the axial line of 32 relative positioning axles 8 is exactly the distance L of the axial line of check and correction face 91 relative positioning through holes 90, reader 12 shows the locating surface 31 of this moment, 32 initial position, it is the distance of the axial line of relative positioning axle 8 locating surface 31 when being L, the reading S of 32 positions (can make zero S, then calculate more convenient), behind the reading, take off check and correction part 9;

Then, workpiece is installed in this measurement mechanism, measures: penetrate after will measuring first the frustum of a cone section 21 of axle 2 and the first hole 101 couplings on the workpiece 100, then measure the first hole 101 deads in line on axle 2 and the workpiece 100; The second hole 102 on the workpiece 100 is cooperated with the positioning section 81 of locating shaft 8, then the second hole 102 and locating shaft 8 deads in line on the workpiece 100; Described actuating unit promotes locating piece 3 and slides, in the sliding process automatic traction is penetrated the measurement axle 2 of workpiece 100 around locating shaft 8 rotary oscillations, to the measurement face 22 and locating surface 31 of measuring axle 2 two ends, 32 fit fully, reader shows locating surface 31 this moment, the reading T of 32 positions, if reading T and locating surface 31, the difference of the reading S of 32 initial positions is δ, can obtain the locating surface 31 of this moment, 32 distance H with respect to the axle center of locating shaft 8 equal the algebraic sum of L and δ, H also equals to measure the distance in axle center of measurement face 22 relative positioning axles 8 that radius on the axle 2 is the cylinder of r, so, the distance of the axis of the axis relative positioning axle 8 of measurement axle 2 equals the poor of H and r, owing to measure the first hole 101 deads in line on axle 2 and the workpiece 100, the second hole 102 and locating shaft 8 deads in line on the workpiece 100, the distance that then can get the axis in the first hole 101 and the second hole 102 on the workpiece 100 also equals H=, and (L ± δ) is poor with r's, namely equals the algebraic sum of " L-r " and δ.

By above-mentioned measuring method as can be known, the rain shaving electrical machine reducer shell only need be installed in this device, can record on the rain shaving electrical machine reducer shell distance between two orthogonal holes, and such operation is very easy.

As depicted in figs. 1 and 2, for avoiding when measuring same size workpiece 100, repeatedly adjusting locating piece 3, described actuating unit adopts the spring shaft assembly: the spring shaft assembly mainly comprises supporting base 7 and the supporting screw 70 thereof that arranges on the base plate 1, the connecting hole 30 that arranges on the locating piece 3, and penetrating connecting hole 30 and the transmission shaft 4 that supports in the screw 70, transmission shaft 4 has an end of the shaft shoulder to penetrate connecting hole 30 and is connected with locating piece 3; Transmission shaft 4 penetrates stop nut 14 again and is connected with supporting base 7 after having an end of external thread section 41 to penetrate supporting screw 70; Also be connected with setting nut 6 on the external thread section 41 between supporting screw 70 and the connecting hole 30, transmission shaft 4 cylindricals between setting nut 6 and locating piece 3 are inserted in spring 5, no matter be when determining spacing L with the check and correction face 91 of check and correction part 9 then, or the measurement face 22 and the locating surface 31 that produce because of foozle when the distance between borehole in the first hole 101 of workpiece 100 and the second hole 102, during 32 change in location, all can be by the distortion auto-compensation of spring 5, thereby guarantee check and correction face 91 and measurement face 22 all the time with locating

surface

31,32 fit, both improved measurement efficient, it is also more accurate to measure, and, can be by adjusting stop nut 14 so that locating

surface

31,32 physical slot changes to adapt to the change of specification of workpieces.

In addition, the actuating unit that acts on locating piece 3 also can adopt the mechanisms such as endplay device or parallel-crank mechanism.

As depicted in figs. 1 and 2, be provided with gathering sill 17 on the described base plate 1, the spigot surface 15 of these gathering sill 17 both sides, 16 perpendicular to locating

surface

31,32, the both sides of described locating piece 3 are provided with

orienting lug

33,34,

orienting lug

33,34

spigot surface

3A, 3B is also perpendicular to locating

surface

31,32,

orienting lug

33,34 shape, size and gathering sill 17 couplings, locating piece 3 is by described

orienting lug

33,34 were slidingly matched with described base plate 1 with cooperating of described gathering sill 17, the glide direction of guaranteeing locating piece 3 is constant, so that the motion of locating piece 3 is more accurate, thereby so that measurement is more accurate, improve the reliability of measuring.The shape of described gathering sill 17 can be U-lag or T-slot or other flute profile,

orienting lug

33,34 shape, the big or small need and gathering sill 17 couplings.

As depicted in figs. 1 and 2, at least be provided with a positioning shaft hole 18 on the described base plate 1, the position of positioning shaft hole 18 adapts with the position in 102 relative first holes 101, the second hole of associated workpiece, two positioning shaft holes 18 that above position is different also can be arranged on the base plate 1, the cooperation section 80 of described locating shaft 8 is plugged in one of them positioning shaft hole 18, the change in location that then can adapt to by the change in location of locating shaft 8 hole on the workpiece 100, therefore, whole device also can adapt to the rain shaving electrical machine reducer shell of plurality of specifications, perhaps other similar workpiece.

As depicted in figs. 1 and 2, described reader 12 adopts dial gauges usually, and dial gauge is connected the gauge head of dial gauge and locating surface 31 positive press contacts by dial framework 11 and table folder 13 with base plate 1.

As depicted in figs. 1 and 2, the adjustment of the reading device position that causes for the rain shaving electrical machine reducer shell that adapts to plurality of specifications, can two row bolts hole be set at base plate 1, accordingly, supporting base 7 and base plate 1 be connected also that bolt connects so that measurement mechanism of the present utility model has better versatility.

Also can set up secondary segment 83 at locating shaft 8, the size in the 3rd hole 103 of the shape of secondary segment 83, size and workpiece is complementary, and the secondary segment 83 of locating shaft is coaxial with positioning section 81.It is more stable that workpiece is installed, and measures more reliable.

Usually, described measurement axle 2 is one group by several and consists of, the cone diameter of the frustum of a cone section 21 of every group of each part is different from big to small, and the range of size that should contain workpiece the first hole 101, make the different frustum of a cone section 21 of cone diameter can be less with workpiece the first hole 101 tolerance clearances that tolerance is arranged, measure more accurate; And the concentric cylinder that every group of two ends radius r equates is measured face 22, makes measurements, calculating simpler and more direct.

Such as Figure 15, shown in Figure 16, described check and correction part also can be that to have described positioning through hole 90 and two ends be that a pair radius is the structure of master bar of the cylinder of r, the axial line antarafacial of the axial line of master bar and positioning through hole 90.Same, its positioning through hole 90 cooperates with locating shaft 8, but master bar is take the periphery of fitting simultaneously with locating

surface

31,32 as check and correction face 91, and the distance between the axial line of check and correction face 91 and this positioning through hole 90 is L, L＞r.

Claims

1. the hole heart is apart from measurement mechanism, be used for measuring the hole heart distance of upper orthogonal the first hole (101) of same workpiece (100) and the second hole (102), it is characterized in that: this device comprises base plate (1), be arranged on locating shaft (8) on the base plate (1) and reading device, locating piece (3), the measurement axle (2) that cooperates with workpiece (100) that is slidingly matched with base plate (1) and the check and correction part (9) that cooperates with locating shaft (8), and check and correction part (9) has a location through hole (90);

The axial line of described locating shaft (8) is perpendicular to the bottom surface (1A) on the base plate (1), the cooperation section (80) of described locating shaft (8), coax segments (82), positioning section (81) are coaxial, and cooperate with positioning shaft hole (18), positioning through hole (90), the second hole (102) of check and correction part (9) on the base plate (1) respectively; Be provided with coplanar two locating surfaces (31,32) on the described locating piece (3), locating surface (31,32) is perpendicular to the bottom surface (1A) on the base plate (1), and the axial line that is parallel to locating shaft (8), actuating unit drive locating piece (3) and slide along the direction perpendicular to locating surface (31,32) and locating shaft axial line;

Described measurement axle (2) is that the cylinder of r forms by the radius at the frustum of a cone section (21) at middle part and its two ends, described cylinder is coaxial with frustum of a cone section (21), the described face of cylinder is measurement face (22), and the diameter of the cone diameter scope of described frustum of a cone section (21) and the first hole (101) is complementary;

Described check and correction part (9) also has at least one and is used for the check and correction face (91) of fitting simultaneously with locating surface (31,32), the axis parallel of check and correction face (91) and described positioning through hole (90), spacing between the axial line of check and correction face (91) and this positioning through hole (90) is L, L＞r.

2. the hole as claimed in claim 1 heart is apart from measurement mechanism, it is characterized in that: described actuating unit is the spring shaft assembly, the spring shaft assembly comprises the upper supporting base (7) that arranges of base plate (1) and supporting screw (70) thereof, the upper connecting hole (30) that arranges of locating piece (3), and penetrating connecting hole (30) and the interior transmission shaft (4) of supporting screw (70), transmission shaft (4) has an end of the shaft shoulder to penetrate connecting hole (30) and is connected with locating piece (3); After transmission shaft (4) has the other end of external thread section (41) to penetrate supporting screw (70), penetrate again stop nut (14) and be connected with supporting base (7); Also be connected with setting nut (6) on the external thread section (41) between supporting screw (70) and the connecting hole (30); Transmission shaft (4) cylindrical cover between setting nut (6) and locating piece (3) has spring (5).

3. the hole as claimed in claim 1 heart is apart from measurement mechanism, it is characterized in that: be provided with gathering sill (17) on the described base plate (1), the spigot surface (15 of this gathering sill (17) both sides, 16) perpendicular to locating surface (31,32), the both sides of described locating piece (3) are provided with orienting lug (33,34), orienting lug (33,34) spigot surface is also perpendicular to locating surface (31,32), orienting lug (33,34) shape, size and gathering sill (17) coupling, locating piece (3) is by described orienting lug (33,34) be slidingly matched with described base plate (1) with cooperating of described gathering sill (17).

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: the reader (12) of described reading device for being connected with base plate (1) by dial framework (11) and table folder (13), the positive press contacts of the gauge head of reader (12) and locating surface (31,32).

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: described positioning shaft hole (18) has different at least two in position.

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: upper in addition three hole (103) coaxial with the second hole (102) of workpiece (100), be provided with secondary segment (83) on described locating shaft this moment (8), the size in the 3rd hole (103) of the shape of described secondary segment (83), size and workpiece (100) is complementary, and secondary segment (83) is coaxial with positioning section (81).

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: described measurement axle (2) consists of one group by at least two, the cone diameter of the frustum of a cone section (21) of every group of each part is different from big to small, and the union of each diameter range contains the actual diameter scope in first hole (101) of workpiece (100), and the cylindrical radius r at the measurement face of every group of each part (22) place equates.

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: described check and correction part is for having described positioning through hole (90) and two ends are that a pair radius is the master bar of the cylinder of r, the axial line antarafacial of the axial line of master bar and positioning through hole (90), the periphery of described cylinder is fitted simultaneously as check and correction face (91) and locating surface (31,32).

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: the positioning through hole (90) of described check and correction part (9) also can with the positioning section (81) of locating shaft (8) coupling.

Such as claim 1, the 2 or 3 described hole hearts apart from measurement mechanism, it is characterized in that: theoretical value and the r sum of spacing L=the first hole (101) between the axial line of described check and correction face (91) and this positioning through hole (90) and the hole heart distance of the second hole (102).