CN111649651B - Measuring device for product design - Google Patents
Measuring device for product design Download PDFInfo
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- CN111649651B CN111649651B CN202010738742.XA CN202010738742A CN111649651B CN 111649651 B CN111649651 B CN 111649651B CN 202010738742 A CN202010738742 A CN 202010738742A CN 111649651 B CN111649651 B CN 111649651B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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Abstract
The invention relates to a measuring device for product design, which comprises a cylinder body, a measuring device and a measuring device, wherein the cylinder body can be inserted into a deep hole; the rod body is inserted into the cylinder body and is in threaded connection with the inner wall of the cylinder body; the through groove is arranged on the outer wall of the barrel body far away from the insertion end of the rod body; the stop block is arranged on the inner wall of the through groove, one end of the stop block is hinged with the inner wall of the through groove, the stop block can penetrate out of the through groove and is abutted against the inner wall of the deep hole, the stop block is of a fan-shaped structure, the included angle of the fan shape is 45 degrees, the lower end face of the stop block is contacted with the insertion end of the rod body, and the upper end face of the stop block is provided with an arc-shaped bulge; the graduated scale is arranged on the outer wall of the rod body along the length direction of the rod body; according to the deep hole drilling device, the barrel device is inserted into a deep hole of a part, the rod body is rotated along the length direction of the barrel until the insertion end of the rod body is abutted against the lower end face of the stop block, the stop block penetrates out of the through groove and is abutted against the inner wall of the deep hole, the position of the graduated scale on the rod body is changed when the rod body moves, and the sum of the reading of the graduated scale and the radius of the barrel is read to obtain the radius of the deep hole.
Description
Technical Field
The invention belongs to the technical field of machining of mechanical parts, and particularly relates to a measuring device for product design.
Background
The mechanical design is a working process which is used as a basis for manufacturing and is obtained by conceiving, analyzing and calculating the working principle, structure, motion mode, force and energy transmission mode, the material and shape size of each part, a lubricating method and the like of the machine according to the use requirement and converting the working principle, the structure, the motion mode, the force and energy transmission mode, the material and the shape size of each part, the lubricating method and the like into specific descriptions; therefore, a measuring device is needed in the process of mechanical design.
The most widely used internal diameter measuring tool in the prior art has two kinds, one kind is slide caliper, but slide caliper can only carry out the precision measurement to the unchangeable machine part deep hole of internal diameter, can not carry out the precision measurement to the diameter of the machine part deep hole of reducing, and machine part carries out precision machining, must carry out real-time determination to machine part, just can guarantee the accurate nature of machine part processing, so to reducing machine part measurement commonly used be the internal diameter measuring apparatu, this kind of instrument can carry out the precision measurement to machine part deep hole internal diameter, but because the internal diameter measuring apparatu is bulky, the operation is complicated, it is inconvenient to use, consequently, it has very important meaning to provide the product design that can carry out the precision measurement to reducing machine part deep hole internal diameter fast.
Disclosure of Invention
The invention aims to provide a measuring device for product design, which can quickly measure the inner diameter of a deep hole of a variable-diameter mechanical part, aiming at the problems existing in the conventional measuring device for product design.
In order to achieve the purpose, the invention adopts the technical scheme that: a measuring device for product design comprises
The cylinder can be inserted into the deep hole;
the rod body is inserted into the barrel body, and the rod body inserted into the barrel body is in threaded connection with the inner wall of the barrel body;
the two through grooves are symmetrically formed in the outer wall of the barrel body far away from the rod body inserting end;
the stop blocks correspond to the through grooves in number one to one and are arranged on the inner walls of the through grooves, one ends of the stop blocks are hinged to the inner walls of the through grooves, the stop blocks can penetrate through the through grooves and abut against the inner walls of the deep holes under the extrusion action of the insertion ends of the rod bodies, the stop blocks are of fan-shaped structures, fan-shaped included angles are 45 degrees, the lower end faces of the stop blocks can be in contact with the insertion ends of the rod bodies, and arc-shaped protrusions are arranged on the upper end faces of the stop blocks and can be in point contact with the inner walls of the deep holes;
the graduated scale is arranged on the outer wall of the non-insertion end of the rod body along the length direction of the rod body;
the hinge point of the stop block is flush with the curved surface of the outer wall of the barrel from the arc protrusion, the length between the hinge point of the stop block and the arc protrusion is L, and the included angle between the length between the stop block and the highest point of the arc protrusion and the barrel is delta0The included angle between the lower end surface of the stop block and the axis of the cylinder body is theta0The axial distance between the hinge point of the stop block and the insertion end of the rod body is X0The included angle between the lower end surface of the stop block and the axis of the rod body is theta0(ii) a The stopper is worn out the butt by logical groove and is taking place to rotate the butt on deep hole inner wall, and the contained angle between stopper lower extreme face and the body of rod axis is theta, and delta theta is theta0Theta, change in height of the arc-shaped protrusion before and after rotation of the stopper by DeltaR
ΔR＝L*sin(δ0+Δθ)-L*sinδ0 (1)；
The distance between the lower end surface of the stop block and the parallel line of the hinge joint of the stop block is delta L, the chamfer angle of the insertion end of the rod body is R, and then L is enabled1R + delta L, the hinge point of the block and the insertion end shaft of the rod bodyThe radial distance is X, and the radial distance delta h is L according to the Pythagorean theorem2＝(Δh2+X2)0.5The arc-shaped bulge is flush with the curved surface of the outer wall of the barrel, and the axial distance between the hinge joint of the stop block and the insertion end of the rod body is X0The stopper rotates, the arc-shaped protrusion abuts against the inner wall of the deep hole, the axial distance between the hinge point of the stopper and the insertion end of the rod body is X, the rod body axially displaces by delta X along the barrel body, and the delta X is X-X0The angle of the stop block is changed
Δθ＝θ0-{90°-arcsin(L1/L2)-arcsin(X/L2)} (2)；
Inputting the delta X into a formula (2) to obtain delta theta; and inputting the delta theta into the formula (1) to obtain delta R, wherein the inner diameter of the deep hole is equal to the outer diameter of the cylinder body +2 delta R.
Preferably, the arc length of the stop block is greater than the distance between the outer wall of the cylinder and the inner wall of the deep hole.
Preferably, the length between the thread opening end of the inner wall of the barrel and the left port of the barrel is greater than the length of the graduated scale, so that the graduated scale is prevented from being worn by threads on the inner wall of the barrel when the rod body is in threaded connection with the barrel.
Preferably, the length between the tail end of the threaded hole in the rod body and the insertion end of the rod body is equal to the length of the graduated scale, so that the stop block is prevented from being scratched by the threads formed in the rod body when the rod body is in threaded connection with the barrel.
Preferably, the end of the rod body positioned outside the barrel body is circumferentially provided with anti-slip lines.
The measuring device for product design is used for machining and measuring mechanical parts with deep holes.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the measuring device is simple in structure, convenient to operate and high in practicability, when in measurement, measuring devices of different models are reasonably selected according to the size of the inner diameter of the deep hole, then the selected measuring device is inserted into the deep hole of the mechanical part, the inserting end of the rod body moves towards the barrel along the length direction of the barrel until the inserting end of the rod body is abutted against the lower end face of the stop block, the stop block penetrates out from the through groove under stress, the arc-shaped bulge of the stop block is abutted against the inner wall of the deep hole, the rod body cannot be rotated at the moment to enable the rod body to move towards the length direction of the barrel, the scale on the scale can be read, and the read scale value and the diameter of the barrel are added to form the diameter of the deep hole.
Drawings
FIG. 1 is a schematic diagram of a measuring device for product design according to the present invention;
FIG. 2 is a schematic cross-sectional view of a measuring device for product design according to the present invention;
FIG. 3 is a schematic view of a measuring device for product design according to the present invention in the direction A-A;
FIG. 4 is a schematic view of a block structure of a measuring device for product design according to the present invention
FIG. 5 is a schematic diagram of the measuring device for product design used for measuring the inner diameter of the deep hole;
FIG. 6 is a cross-sectional view of a measuring device for product design according to the present invention;
FIG. 7 is a cross-sectional view of a measuring device for product design according to the present invention.
In the figure: 1. the scale comprises a cylinder body, 2, a rod body, 3, a through groove, 4, a stop block, 4-1, an arc-shaped bulge, 5 and a graduated scale.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the technical scheme in the embodiment of the invention is clearly and completely described below with reference to the attached drawings in the embodiment of the invention.
In the description of the present invention, it should be understood that the terms used in the description of the present invention for the orientation, such as "height", "length", "width", "front surface", are based on the description when the body is vertically placed, i.e., perpendicular to the ground, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
As shown in FIGS. 1-4, the embodiment of the invention is realized by adopting the following technical scheme that the measuring device for product design comprises
A cylinder 1 capable of being inserted into the deep hole;
the rod body 2 is inserted into the barrel body 1, the rod body 2 inserted into the barrel body 1 is in threaded connection with the inner wall of the barrel body 1, the insertion end of the rod body 2 inserted into the barrel body 1 is arc-shaped, namely, the insertion end of the rod body 2 inserted into the barrel body 1 is processed into a chamfer structure;
two through grooves 3 are symmetrically formed in the outer wall of the barrel body 1 far away from the insertion end of the rod body 2;
the stop blocks 4 are in one-to-one correspondence with the through grooves 3 and are arranged on the inner walls of the through grooves 3, one ends of the stop blocks 4 are hinged to the inner walls of the through grooves 3, the stop blocks 4 can penetrate out of the through grooves 3 under the extrusion action of the insertion ends of the rod bodies 2 and abut against the inner walls of the deep holes, the stop blocks 4 are of fan-shaped structures, fan-shaped included angles are 45 degrees, the lower end faces of the stop blocks 4 can be in contact with the insertion ends of the rod bodies 1, the arc-shaped bulges 4-1 are arranged on the upper end faces of the stop blocks 4, the arc-shaped bulges 4-1 can be in point contact with the inner walls of the deep holes, the purpose is to prevent the included angles of the stop blocks 4 from being too small, the rod bodies 2 can be in contact with the stop blocks 4 only by moving inwards along the barrel bodies 1 for a long length or the arc-shaped bulges 4-1 of the stop blocks can not abut against the inner walls of the deep holes after penetrating out of the through grooves 3, and the arc-shaped bulges 4-1 can be in point contact with the inner walls of the deep holes, the accuracy of measurement is increased;
the graduated scale 5 is arranged on the outer wall of the non-insertion end of the rod body 2 along the length direction of the rod body 2;
the hinge point of the stop block 4 is flush with the curved surface of the outer wall of the barrel body 1 from the arc-shaped bulge 4-1, the length between the hinge point of the stop block 4 and the arc-shaped bulge 4-1 is L, and the included angle between the length between the stop block 4 and the highest point of the arc-shaped bulge 4-1 and the barrel body 1 is delta0The included angle between the lower end surface of the stop block 4 and the axis of the cylinder body 1 is theta0The axial distance between the hinge point of the stop block 4 and the insertion end of the rod body 2 is X0The included angle between the lower end surface of the stop block 4 and the axis of the rod body 2 is theta0(ii) a The stop block 4 penetrates through the through groove 3 and abuts against the inner wall of the deep hole in a rotating manner, and the lower end face of the stop block 4 is arranged between the axis of the rod body 2Angle theta, delta theta ═ theta0Theta, change in height of the front and rear arc-shaped protrusions 4-1 of the stopper 4 by Δ R
ΔR＝L*sin(δ0+Δθ)-L*sinδ0 (1)；
The distance between the lower end surface of the stop block 4 and the parallel line of the hinged point of the stop block 4 is delta L, the chamfer angle of the insertion end of the rod body 2 is R, and then L is enabled1The axial distance between the hinged point of the stop 4 and the inserting end part of the rod body 2 is X, the radial distance delta h is X, and L2 is obtained according to the pythagorean theorem (delta h)2+X2)0.5The arc-shaped bulge 4-1 is flush with the curved surface of the outer wall of the barrel body 1, and the axial distance from the hinge point of the stop block 4 to the insertion end of the rod body 2 is X0The stop block 4 rotates, the arc-shaped protrusion 4-1 is abutted to the inner wall of the deep hole, the axial distance between the hinge point of the stop block 4 and the insertion end of the rod body 2 is X, the rod body 2 axially displaces along the barrel body 1 by delta X, and the delta X is X-X0The stopper 4 is changed by an angle Δ θ ═ θ0-{90°-arcsin(L1/L2)-arcsin(X/L2)} (2)；
Inputting the delta X into a formula (2) to obtain delta theta; and inputting the delta theta into the formula (1) to obtain delta R, wherein the inner diameter of the deep hole is equal to the outer diameter of the cylinder body +2 delta R.
The working principle is as follows: in order to increase the practicality, when measuring, according to the measuring device of the rational in infrastructure selection different models of deep hole internal diameter, then inside the deep hole that the measuring device who will select inserted machine part, and move the end of the body of rod 2 along 1 length direction of barrel in barrel 1, the end of inserting until the body of rod 2 with the lower terminal surface butt of dog 4, dog 4 atress is worn out by leading to groove 3, and the protruding 4-1 butt of arc of dog 4 on the deep hole inner wall, at this moment can't rotate the body of rod 2, also can't make the body of rod along to 1 axial of barrel when moving to 1 inside of barrel, read the scale on the scale 5, then will read 5 numerical values of scale and 1 diameter of barrel and add promptly for the deep hole diameter of surveying.
Wherein, the arc length of dog 4 is greater than the interval between 1 outer wall of barrel and the deep hole inner wall, thereby the purpose prevent dog 4 with the length undersize of the right angle limit that leads to 3 minor faces of groove parallel makes dog 4 also can't the butt on the deep hole inner wall by leading to 3 roll-outs of groove.
The length between the thread opening end of the inner wall of the barrel body 1 and the left port of the barrel body 1 is larger than that of the graduated scale 5, and the thread on the inner wall of the barrel body 1 is used for preventing the graduated scale 5 from being abraded when the rod body 2 is in threaded connection with the barrel body 1.
The length between the tail end of the screw thread arranged on the rod body 2 and the inserting end of the rod body 2 is equal to the length of the graduated scale 5, so that the stop block 4 is prevented from being scratched by the screw thread arranged on the rod body 2 when the rod body 2 is in threaded connection with the barrel body 1.
Wherein, 2 tip of the body of rod that lie in the barrel 1 outside are equipped with anti-skidding line along circumference, and the purpose is in order to increase the convenience when using for when the non-insertion end of holding the body of rod 2 rotates the body of rod 2, the palm increases with the frictional force that the non-insertion end of the body of rod 2 was inserted, convenient rotation.
A measuring device for product design is used for machining and measuring a mechanical part with a deep hole.
A method for verifying the measurement working principle of a measurement device for product design comprises the following steps:
(1) as shown in fig. 5, two through grooves 3 are symmetrically arranged on the barrel body 1, and two stop blocks 4 are in one-to-one correspondence with the two through grooves 3 and are respectively hinged to the inner walls of the through grooves 3, so that the arc-shaped protrusions 4-1 of the stop blocks 4 are abutted against and constrained on the inner walls of the deep holes, and when the arc-shaped protrusions 4-1 cannot move, the circle center of the barrel body 1 is superposed with the circle center of the deep hole; if the circle center of the barrel 1 does not coincide with the circle center of the deep hole of the mechanical part, and two through grooves 3 are optionally formed on the barrel 1, each stop block 4 is hinged to the inner wall of each through groove 3 corresponding to the stop block, when the insertion end of the rod body 2 moves inwards along the length direction of the barrel 1, only the stop block 4 penetrating out of the through groove 3 can be temporarily abutted against the inner wall of the mechanical part, when the rod body 2 is rotated again, the rod body 2 can also displace along the length direction of the barrel 1, and the arc-shaped bulge 4-1 of the stop block 4 can displace on the inner wall of the deep hole of the mechanical part, so that the coincidence of the circle center of the barrel 1 and the circle center of the deep hole of the mechanical part is the premise that the measuring device can be used for measuring the inner diameter of the deep hole, and meanwhile, a suitable measuring device is selected when measuring the inner diameters of deep holes with different sizes, therefore, the inner diameter D of the deep hole of the mechanical part is D1+2R, wherein D is the inner diameter of the deep hole, d1 is the external diameter of the cylinder 1, and R is the height of the arc-shaped bulge 4-1.
(2) As shown in fig. 6 and 7, a is a hinge point, B is the center of a chamfer of the rod body 2, C is the arc-shaped convex vertex of the stop block 4, the axial distance between the AB is X, the radial distance delta h between the AB, the length of the line AC is L, and the included angle between the AC and the axis of the cylinder body 1 is delta0The included angle between the lower end face of the stop block 4 and the axis of the cylinder 1 is theta (the theta is variable and can be changed along with the rotation of the stop block 4), the distance between the lower end face of the stop block 4 and the parallel line of the passing point A is delta L, (a) when the arc-shaped protrusion 4-1 is level with the curved surface of the outer wall of the cylinder 1, the corresponding measured value is the minimum value at the moment, namely the outer diameter of the cylinder 1 is equal to the inner diameter of the deep hole, the rod body 2 just abuts against the stop block 4 at the moment, the axial distance between the points AB is X0 at the moment, and (b) when the rod body 2 moves axially along the cylinder 1 to the arc-shaped protrusion 4-1 to be in point contact with the inner wall of the deep hole, the axial distance between the points AB is X, so that the difference between the length of the rod body 2 entering the cylinder 1 in the case of (b) and the length of the rod body 2 entering the cylinder 1 in the case of (a), namely, is delta X-X0；
When the rod body 2 moves within the barrel body 1 by the distance delta X, the stop block 4 can rotate along the articulated shaft, and in the condition (a), the included angle between the lower end surface of the stop block 4 and the axis of the rod body 2 is theta0In the case of (b), the stopper 4 is rotated, and the angle between the lower end surface of the stopper 4 rotated at this time and the central axis of the rod 2 is θ, so that the stopper 4 is rotated by Δ θ ═ θ0Theta, so that the upper end surface of the stop 4 provided with the arc-shaped protrusion 4-1 penetrates out of the through groove 3 to abut on the inner wall of the deep hole, and the stop 4 rotates by an angle delta theta0-θ；
Make the length between pin joint to the arc arch of dog 4 be L, promptly AC be L, then do the axis of dog 4, under (a) kind of circumstances, arc arch 4-1 (point C) is parallel and level with 1 outer wall curved surface of barrel, and the contained angle between AC and the barrel axis is delta this moment0(ii) a In case (b), the arc-shaped protrusion 4-1 is in point contact with the inner wall of the borehole, and the line AC is rotated counterclockwise by Δ θ around the point a, so that the distance Δ R from the arc-shaped protrusion 4-1 (point C) to the inner wall of the borehole is L × sin (δ ═ L sin:)0+Δθ)-L*sinδ0A mapping relation between Δ R and Δ θ is obtained, that is, Δ R ═ f (Δ θ);
secondly, let L1 be R + Δ L as usualCounting, wherein R is a rod chamfering radius, and as the angle aAB plus angle BAb plus angle bAD is equal to 90 degrees, the angle AaB is equal to 90 degrees AbB is equal to 90 degrees, and under the condition of (a), the angle bAD is equal to theta 0, and at the moment, when the arc-shaped bulge 4-1 is flush with the curved surface of the outer wall of the cylinder 1; in the case of (b), angle bAD is θ, and at this time, stopper 4 is rotated by θ0The upper end face of the stop 4 provided with the arc-shaped protrusion 4-1 penetrates out of the through groove 3 to abut against the inner wall of the deep hole, and the stop 4 rotates by an angle delta theta0Theta and the axial distance between points AB is then defined by X after rotation of the stop 40Becomes X, i.e., Δ X displacement by which the rod body 2 moves in the axial direction of the cylinder body 1, i.e., X ═ X0+ Δ X, so that L2 ═ Δ h according to the triangle pythagorean theorem2+X2)0.5(ii) a Angle aAB ═ arcsin (X/L2),. ABb ═ arcsin (L1/L2), theta ═ 90 ° -arcsin (X/L2) -arcsin (L1/L2), and theta ═ theta { (L1/L2 { (L2) } arcsin (L1/L2) } theta {, and theta { (X/L2) } theta { (L2) } arcsin (L2) } theta0- θ ═ Δ θ, so Δ θ ═ θ0- {90 ° -arcsin (L1/L2) -arcsin (X/L2) }, obtaining the mapping relation between Δ X and Δ θ, where Δ X ═ f (Δ θ), and establishing the mapping relation between Δ X- Δ θ - Δ R by combining all the relations.
The above disclosure is only for the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. A measuring device for product design is characterized by comprising
A cylinder (1) which can be inserted into a deep hole;
the rod body (2) is inserted into the barrel body (1), and the rod body (2) inserted into the barrel body (1) is in threaded connection with the inner wall of the barrel body (1);
the two through grooves (3) are symmetrically arranged on the outer wall of the barrel body (1) far away from the insertion end of the rod body (2);
the stop blocks (4) correspond to the through grooves (3) in quantity one to one, are arranged on the inner walls of the through grooves (3), are hinged to the inner walls of the through grooves (3), can enable the stop blocks (4) to penetrate out of the through grooves (3) and abut against the inner walls of the deep holes under the extrusion action of the insertion ends of the rod bodies (2), are of fan-shaped structures, and have fan-shaped included angles of 45 degrees, the lower end faces of the stop blocks (4) can be in contact with the insertion ends of the rod bodies (1), arc-shaped protrusions (4-1) are arranged on the upper end faces of the stop blocks (4), can enable the arc-shaped protrusions (4-1) to be in point contact with the inner walls of the deep holes, and the arc-shaped lengths of the stop blocks (4) are larger than the distance between the outer walls of the barrel bodies (1) and the inner walls of the deep holes;
the graduated scale (5) is arranged on the outer wall of the non-insertion end of the rod body (2) along the length direction of the rod body (2);
the hinge point of the stop block (4) is flush with the curved surface of the outer wall of the barrel body (1) from the arc-shaped bulge (4-1) to the hinge point of the stop block (4), the length between the hinge point of the stop block (4) and the arc-shaped bulge (4-1) is L, and the included angle between the length between the stop block (4) and the highest point of the arc-shaped bulge (4-1) and the barrel body (1) is delta0The included angle between the lower end surface of the stop block (4) and the axis of the cylinder body (1) is theta0The axial distance between the hinge point of the stop block (4) and the insertion end of the rod body (2) is X0The included angle between the lower end surface of the stop block (4) and the axis of the rod body (2) is theta0(ii) a The stopper (4) penetrates out of the through groove (3) and abuts against the inner wall of the deep hole in a rotating manner, the included angle between the lower end face of the stopper (4) and the axis of the rod body (2) is theta, and delta theta is equal to theta0-theta, the height change of the front and rear arc-shaped protrusions (4-1) of the stopper (4) is DeltaR
ΔR＝L*sin(δ0+Δθ)-L*sinδ0 (1)；
The distance between the lower end surface of the stop block (4) and the parallel line of the hinge joint of the stop block (4) is delta L, the chamfer angle of the insertion end of the rod body (2) is R, and then L is enabled1The axial distance between the hinged point of the stop block (4) and the insertion end part of the rod body (2) is X, the radial distance delta h is, and L is obtained according to the pythagorean theorem2＝(Δh2+X2)0.5The arc-shaped bulge (4-1) is flush with the curved surface of the outer wall of the barrel body (1), and the axial distance between the hinge point of the stop block (4) and the insertion end of the rod body (2) is X0The stop block (4) rotates, the arc-shaped bulge (4-1) is abutted to the inner wall of the deep hole, the axial distance between the hinge point of the stop block (4) and the insertion end of the rod body (2) is X, the rod body (2) axially displaces along the barrel body (1) by delta X, and the delta X is X-X0The angle of the stop block (4) is changed
Δθ＝θ0-{90°-arcsin(L1/L2)-arcsin(X/L2)} (2)；
Inputting the delta X into a formula (2) to obtain delta theta; then inputting the delta theta into the formula (1) to obtain delta R,
the inner diameter of the deep hole is equal to the outer diameter of the cylinder body +2 delta R;
when measuring, according to the measuring device of the reasonable selection different models of size of deep hole internal diameter, then inside the deep hole that the measuring device who will select inserted machine part, and move the end of inserting the body of rod along barrel length direction in to the barrel, the lower terminal surface butt of inserting end and dog until the body of rod, the dog atress is worn out by leading to the groove, and the protruding butt of arc of dog is on the deep hole inner wall, at this moment can't rotate the body of rod and make the body of rod along moving to barrel length direction to the barrel is inside, and then can read the scale on the scale, then the scale numerical value that will read and barrel diameter footpath add promptly for the deep hole diameter.
2. The measuring device for product design as claimed in claim 1, wherein the length between the thread opening end of the inner wall of the cylinder (1) and the left end opening of the cylinder (1) is greater than the length of the graduated scale (5) for preventing the thread of the inner wall of the cylinder (1) from wearing the graduated scale (5) when the rod body (2) is in threaded connection with the cylinder (1).
3. A product design measuring device as claimed in claim 1, characterized in that the length between the end of the threaded opening in the rod body (2) and the insertion end of the rod body (2) is equal to the length of the scale (5), so as to avoid the thread formed in the rod body (2) from scratching the stop (4) when the rod body (2) is screwed into the barrel (1).
4. A product design measuring device as claimed in claim 1, characterized in that the end of the rod body (2) located outside the cylinder (1) is provided with anti-slip threads in the circumferential direction.
5. A product design measuring device as claimed in any one of claims 1 to 4, which is used for machining measurement of a mechanical part with a deep hole.
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| CN103884257A (en) * | 2014-04-08 | 2014-06-25 | 付振山 | Plane spiral self-centering micrometer device |
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|---|---|---|---|---|
| CN2387503Y (en) * | 1999-09-24 | 2000-07-12 | 徐敬千 | Device for measuring and repairing taper thread hole of graphite electrode |
| DE10233539A1 (en) * | 2002-07-23 | 2004-02-12 | Knäbel, Horst, Dipl.-Ing. | Cylindrical hole diameter measurement method in which a plug gauge with a cylindrical body and an insertion shaft are inserted into the hole to a predefined depth and then tilted until the body touches the hole side |
| CN1329711C (en) * | 2005-09-14 | 2007-08-01 | 哈尔滨工业大学 | Micro interior cavity dimension measuring apparatus and method based on double optical fiber coupling |
| CN100516766C (en) * | 2007-08-09 | 2009-07-22 | 中国科学院武汉岩土力学研究所 | Mechanical type multiple-point displacement gage |
| CN201166539Y (en) * | 2008-01-25 | 2008-12-17 | 黄津 | Bore measuring apparatus |
| CN102374839A (en) * | 2011-11-17 | 2012-03-14 | 山东泰瑞汽车机械电器有限公司 | Checking fixture two-purpose pin |
| CN104422372A (en) * | 2013-08-27 | 2015-03-18 | 常州华尔澜工具有限公司 | Aperture measurement device |
-
2020
- 2020-07-28 CN CN202010738742.XA patent/CN111649651B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884257A (en) * | 2014-04-08 | 2014-06-25 | 付振山 | Plane spiral self-centering micrometer device |
Non-Patent Citations (3)
| Title |
|---|
| Laser pointing stability measured by an oblique-incidence optical;J.Gray;《REVIEOWF SCIENCIFIC INSTRUMENTS》;20120506;全文 * |
| 一种用于红外警戒系统的被动测距方法;铁铮铁;《红外与毫米波学报》;20010830;全文 * |
| 基于红外图像的被动测距方法;黄士科;《红外与激光工程》;20070228;全文 * |
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