CN210070968U

CN210070968U - Calibration tool

Info

Publication number: CN210070968U
Application number: CN201920718686.6U
Authority: CN
Inventors: 梁利嘉
Original assignee: Sichuan Hang Hao Technology Co Ltd
Current assignee: Sichuan Hang Hao Technology Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-02-14
Anticipated expiration: 2029-05-20

Abstract

The utility model relates to a mark frock, this mark frock include that both sides are provided with the installation of spacing face and cross the cab apron, install and be provided with locking positioner on the spacing face of cab apron one side, locking positioner includes roof, mounting panel, screw rod, screw and to the direction subassembly that plays the guide effect to the roof, through screw rod and screwed connection between mounting panel and the roof, the direction subassembly is even group, and the symmetry sets up in the screw rod both sides. The utility model discloses can realize fast that it is fixed with the clamping to be used to the dismantlement of group on the revolving stage, improve and be used to the efficiency that the group was markd.

Description

Calibration tool

Technical Field

The utility model belongs to the technical field of the part is measured and specifically relates to a mark frock.

Background

An inertial navigation system (INS, hereinafter, inertial navigation) is an autonomous navigation system that does not depend on external information and does not radiate energy to the outside. The working environment of the device not only comprises the air and the ground, but also can be underwater. The basic working principle of inertial navigation is based on Newton's law of mechanics, and by measuring the acceleration of a carrier in an inertial reference system, integrating the acceleration with time and transforming the acceleration into a navigation coordinate system, information such as speed, yaw angle and position in the navigation coordinate system can be obtained, so that the precision and stability of parameters of an inertial navigation product are very important. In order to accurately measure various parameters of an inertial instrument in an inertial navigation product, the measurement of various parameters of the inertial instrument of the inertial navigation product generally adopts a parameter calibration method, namely a method of multi-position speed and position calibration, and error parameters contained in an output signal of the instrument, namely instrument precision and performance parameters, are solved through a certain error model.

When the inertial measurement unit is calibrated, the inertial measurement unit needs to be placed on the rotary table and rotate at a certain angular rate along with the rotary table, the inertial measurement unit needs to be fixed on the table top of the rotary table at the moment, and when the speed calibration can be performed only by using the single-shaft rotary table due to condition limitation, the multi-position speed calibration needs to be disassembled and assembled for multiple times, so that the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an above-mentioned technical problem who exists among the solution background art, and provide a frock is markd in manual upset, can realize fast that it is fixed with the clamping to be used to the dismantlement of group on the revolving stage, improves and is used to the efficiency of group's demarcation.

The technical solution of the utility model is that: the utility model relates to a mark frock, its special character lies in: the calibration tool comprises an installation transition plate, wherein the two sides of the installation transition plate are provided with limiting surfaces, a locking and positioning device is arranged on the limiting surface on one side of the installation transition plate, the locking and positioning device comprises a top plate, an installation plate, a screw rod, a screw and a guide assembly which plays a guide role on the top plate, the installation plate and the top plate are connected through the screw rod and the screw, the guide assembly is an even number group, and the guide assembly is symmetrically arranged on the two sides of the screw rod.

Preferably, the outer end of the screw rod is of a cross-shaped structure or a grab handle structure, the outer side of the inner end of the screw rod is of an external thread cylindrical structure in threaded connection with the mounting plate, a through hole through which the screw can pass is formed in the top plate, and the screw passes through the through hole and is in threaded connection with the screw rod.

Preferably, the screw length is such that, after the screw is screwed in, a gap is present between the screw head and the end face of the through hole of the top plate in the tightened state.

Preferably, the direction subassembly includes ball support, ball and the limiting plate of guide holder, guide bar, restriction ball position, the guide holder sets up in the mounting panel, be provided with the direction via hole that can let the guide bar pass in the guide holder, ball support encircles and sets up between guide holder and guide bar, the ball sets up in ball support, the guide bar outer end is provided with the limiting plate.

Preferably, the difference between the diameter of the inner circle of the guide seat and the diameter of the outer circle of the guide rod is required to ensure that the interference of the ball is 0.01 mm-0.015 mm after the ball is loaded.

Preferably, the guide seat and the guide rod are made of bearing steel or alloy steel, and the ball is a steel ball.

Preferably, the installation transition plate is made of light metal or hard metal, the light metal is made of aluminum alloy or magnesium aluminum alloy, and the hard metal is made of stainless steel or alloy structural steel.

Preferably, when the installation transition plate is made of light metal, an installation reference positioning block is arranged on the upper surface of the bottom surface of the installation transition plate, an orientation reference positioning block is arranged on a limiting surface of the installation transition plate, which corresponds to the other side of the locking positioning device, and the installation reference positioning block and the orientation reference positioning block are made of stainless steel or alloy structural steel.

Preferably, the limiting surface is a limiting table or a limiting plate.

Preferably, the installation transition plate is provided with an installation hole and a lightening hole, and the lightening hole is arranged in the center of the installation transition plate.

The utility model discloses constitute by triplex: the installation transition plate, the positioning block and the locking and positioning device are arranged, wherein the installation transition plate is fixed on the table top of the rotary table and is a base body of the calibration tool to play a role in installation and connection; the positioning block is fixed on the installation transition plate through a screw, proper machining allowance is required to be reserved on the positioning surface of the positioning block, and then the positioning block is combined and machined into a component, namely the assembly machining transition plate, so that the form and position tolerance of each installation positioning surface is guaranteed. The surface of the positioning block is contacted with a positioning surface and a reference surface of the calibration object, so that the precise positioning effect is realized; the positioning block is provided with an installation reference positioning block and an azimuth reference positioning block, the installation reference positioning block is installed on the upper surface of the bottom surface of the installation transition plate, and the azimuth reference positioning block is installed on a limiting surface on the other side of the installation transition plate corresponding to the locking positioning device; the locking and positioning device is a component which enables the tool to perform horizontal displacement, is arranged on the installation transition plate, plays a role in quickly positioning and fixing the calibration object, can quickly release the calibration object, and quickly positions and clamps the calibration object after the calibration object is overturned. Therefore, the utility model has the advantages of it is following:

1. the efficiency of inertial measurement unit calibration is improved; the utility model discloses a locking positioner plays quick location and fixed calibration object's function, also can loosen fast simultaneously and mark the object, fixes a position fast again after making its upset position manually and presss from both sides tightly, and the object is markd in manual upset to can realize fast that it is fixed with the clamping to be used to the dismantlement of group on the revolving stage, improve and be used to the efficiency of group's demarcation.

2. The calibration result is accurate; the utility model discloses utilize locating piece surface and the locating surface and the reference surface contact of demarcation object, play the accurate positioning effect, simultaneously through the accurate adjustment of locking positioner to demarcation object horizontal displacement to prevent to produce the clearance with locating surface and reference surface, can guarantee the accuracy of calibration result.

3. The application range is wide; the utility model discloses not only can realize being used to the accurate of group and demarcate, can also be used for the part that various needs were markd in the part measurement field.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the installation transition plate position tolerance of the present invention;

FIG. 3 is a schematic view of the installation type position tolerance of the installation transition plate of the present invention;

fig. 4 is a schematic structural view of the locking and positioning device of the present invention;

fig. 5 is a schematic structural view of the guide assembly of the present invention;

fig. 6 is the utility model discloses a mark frock installation work schematic diagram.

The reference numbers are as follows:

1. mounting a transition plate; 2. a screw; 3. a screw; 4. a guide assembly; 5. a top plate; 6. via holes, 7, screw heads; 8. a via end face; 9. a guide seat; 10. a guide bar; 11. a limiting plate; 12. a ball support; 13. a ball bearing; 14. a guide via hole; 15. an orientation reference positioning block; 16. installing a reference positioning block; 17. a limiting surface; 18. locking the positioning device; 19. mounting holes; 20. calibrating a tool; 21 calibrating the object (inerter); 22. a turntable; 23. and (7) lightening holes.

Detailed Description

Referring to fig. 1, the structure of the embodiment of the present invention is composed of three parts:

installing a transition plate 1: the base body is fixed on the table top of the rotary table, is a base body of the calibration tool and plays a role in mounting and connecting; the two sides of the installation transition plate 1 are provided with limiting surfaces 17, the limiting surfaces 17 can be limiting tables or limiting plates, and the installation transition plate 1 is also provided with installation holes 19 for installing the installation transition plate 1 on the table top of the rotary table.

Positioning a block: the positioning surfaces of the transition plates are fixed on the installation transition plate 1 through screws, proper machining allowance must be reserved on the positioning surfaces, and then the transition plates are combined and machined into a component, namely the transition plates are combined and machined, so that the form and position tolerance of each installation positioning surface is guaranteed. The surface of the positioning block is contacted with a positioning surface and a reference surface of the calibration object, so that the precise positioning effect is realized; the positioning blocks comprise an installation reference positioning block 16 and an azimuth reference positioning block 15, the installation reference positioning block 16 is installed on the upper surface of the bottom surface of the installation transition plate 1, and the azimuth reference positioning block 15 is installed on a limiting surface 17 on the other side of the installation transition plate 1 corresponding to the locking positioning device 18.

Locking and positioning device 18: the part capable of carrying out horizontal displacement in the tool is arranged on the limiting surface 17 on one side of the installation transition plate 1, has the functions of quickly positioning and fixing the calibration object, can quickly release the calibration object, and quickly positions and clamps the calibration object after the calibration object is overturned.

The transition plate 1 is generally made of light metal materials with low density and high specific rigidity, such as aluminum alloy, magnesium aluminum alloy and the like, so that the stability of part form and position tolerance is guaranteed on the premise of reducing the self-quality of the part, and meanwhile, the load of the rotary table is reduced.

The positioning block is generally made of stainless steel or alloy structural steel, the surface hardness of the part is improved after the fixing or tempering treatment, the surface quality of the part after long-time work is ensured, the defects of scratches, pits, high points and the like are prevented, the positioning surface of the calibration object is tightly attached to the surface of the positioning block, and the calibration precision is ensured. When the material of the part is alloy structural steel, the surface of the part needs to be plated to prevent corrosion.

If the load of the rotary table is allowed, the installation transition plate 1 and the positioning block can be combined into a whole to form a part, namely the positioning block is removed, the installation transition plate 1 directly adopts hard metal, stainless steel or alloy structural steel is selected, the requirement of the tolerance of the part between the installation positioning surfaces is ensured by direct processing, and the material of the part and the requirements of heat treatment and surface treatment are consistent with the requirements when the positioning block is arranged.

Referring to fig. 2 and 3, the installation of the transition plate 1 needs an installation positioning reference a surface, on which an installation hole 19 consistent with the interface of the table top of the turntable is processed, and is precisely and stably attached and fixed with the table top of the turntable, and a lightening hole 23 is arranged in the center, so that the self weight of the installation transition plate 1 can be lightened.

After the installation reference positioning blocks 16 and the azimuth reference positioning blocks 15 are machined and molded, a certain machining allowance is reserved for a positioning surface, the installation reference positioning blocks and the azimuth reference positioning blocks are fixed on the installation transition plate 1 by using fasteners and then are combined and machined to required positioning accuracy, the number and the positions of the installation reference positioning blocks 16 and the azimuth reference positioning blocks 15 can be adjusted according to the arrangement mode of the positioning surface of the calibration object, and the principle is that the installation reference positioning blocks and the azimuth reference positioning blocks are attached to the positioning surface of the calibration object as much as possible; the locating surfaces of all the installation datum locating blocks 16 theoretically have to be coplanar and parallel to the datum A plane; the positioning surfaces of all the azimuth reference positioning blocks 15 theoretically have to be coplanar, perpendicular to the reference A plane and parallel to the L direction of the reference B plane; in this embodiment, the mounting reference positioning block 16 and the orientation reference positioning block 15 are both two and symmetrically arranged.

The limiting surface 17 can also limit the displacement of the calibration object in the L direction, and the installation is ensured to be in place.

The reference B plane is the mounting location plane of the locking locator 18 and should ideally be coplanar with and perpendicular to the reference a plane.

When the installation transition plate 1 is directly made of hard metal and the installation transition plate 1 and the positioning block are combined into a whole, the reference requirement is the same as the requirement.

All the type position tolerances in fig. 2 and 3 are used as reference and can be adjusted according to the precision level of the instrument parameter of the calibration object and the calibration requirement.

Referring to fig. 4, the utility model discloses a locking positioner embodiment's structure includes roof 5, installation cross cab apron 1, screw rod 3, screw 2 and to roof 5 the direction subassembly 4 of guide effect, installs and crosses between cab apron 1 and the roof 5 to be connected through screw rod 3 and screw 2, and direction subassembly 4 is even group, and the symmetry sets up in screw rod 3 both sides, and in this embodiment, direction subassembly 4 is two sets of, and the symmetry sets up in screw rod 3 both sides. Wherein:

a guide assembly 4; constraining other freedom degrees of movement of the top plate 5 except the freedom degree in the pressing direction, enabling the top plate 5 not to deflect and displace in parallel in the process of displacing and pressing the calibration object, and ensuring that the calibration object is tightly attached to all surfaces of the positioning block without generating gaps; the guide assemblies 4 are at least two groups to really function as guides and limit other degrees of freedom of the top plate 5.

Top plate 5: the calibration object is translated under the guide action of the screw rod 3 in the forward screwing way and the guide component 4, and the calibration object is pushed and pressed tightly to be fully attached to each surface of the positioning block; the top plate 5 is generally made of stainless steel materials, the flatness of the binding surface of the top plate and a calibration object is high, and the top plate is guaranteed to be compressed and tightly bound.

Screw rod 3: one end of the screw rod 3 is of a cross-shaped structure or other structures which are easy to operate a grab handle by hands, and the other end of the screw rod 3 is of an external thread cylindrical structure, so that the screw rod 3 can be operated to rotate forwards, the top plate 5 can be pushed to move towards the inner side of the tool through the screw rod 3 and a thread pair provided with the transition plate 1, sufficient pressing force is generated at the same time, and a calibration object can be reliably fixed; the screw rod 3 is rotated reversely, and the top plate 5 is loosened; the length of the screw rod 3 can be adjusted according to the shape and the size of the calibration object.

And (3) a screw 2: the screw 2 is a standard fastener made of stainless steel, and the length of the screw 2 is that a gap is reserved between the screw head 7 and the screw through hole end face 8 of the top plate 5 under the condition that the screw is screwed in the screw 3 and then is tightened, namely the screw 2 cannot press the top plate 5 on the end face of the screw 3. In this condition, when the screw 3 is rotated in the reverse direction, the screw 2 acts as a pulling force to easily move the top plate 5 outward. When the screw 2 is screwed into the threaded hole of the screw rod 3, a little thread glue is needed to be coated.

Referring to fig. 5, the guiding assembly 4 in the embodiment of the present invention includes a guiding seat 9, a guiding rod 10, a ball support 12 for limiting the position of the ball 13, a ball 13, and a limiting plate 11, wherein the guiding seat 9 is disposed in the installation transition plate 1, a guiding through hole 14 for allowing the guiding rod 10 to pass is disposed in the guiding seat 9, the ball support 12 is disposed around the guiding seat 9 and the guiding rod 10, and the ball 13 is disposed in the ball support 12. The outer end of the guide rod 10 is provided with a limit plate 11.

The guide seat 9, the ball support 12, the guide rod 10 and the balls 13 are respectively similar to a bearing outer ring, a bearing inner ring, a retainer and balls of a ball bearing, and the difference is that the guide seat 9 and the guide rod 10 can rotate relatively and can also translate relatively to generate a guide effect by the structure; the guide assembly 4 can also be used in structures that require both guidance and rotation. Wherein:

the balls 13 act like bearing balls, providing rolling friction and keeping the radial positioning of the guide rod 10 and the guide shoe 9 coaxial. The balls 13 can be different in diameter according to the use environment, and can be different in precision grade according to the use environment, and steel balls with the precision grade higher than G10 are required to be selected when the balls need to bear larger radial load or work under severe mechanical conditions; the precision grade of the guide assembly only playing a role of guiding can be properly relaxed, and only about G40 steel balls are selected, and the diameters of the steel balls are selected according to the structural requirements.

The guide seat 9 and the guide rod 10 are made of bearing steel, alloy steel with the hardness HRC reaching 56-62 after quenching and tempering or other materials with the surface hardness HRC reaching 56-62 by other processing methods, and the principle is that the surface hardness is close to the surface hardness of the ball 13; the difference between the diameter of the inner circle of the guide seat 9 and the diameter of the outer circle of the guide rod 10 must ensure that the interference of the ball 13 is 0.01 mm-0.015 mm after being installed.

The ball support 12 limits the position of the ball 13, and is consistent with the function of a bearing retainer, and stainless steel, aluminum alloy or other high-low temperature resistant and corrosion resistant materials can be selected. The ball support 12 arranges the balls 13 as much as possible according to the axial dimension, the number of balls 13 per circle is arranged according to the diameter of the ball support 12, one circle is generally not less than 5 in the axial direction, the balls 13 are generally arranged in 4 or more than 4 circles, and in the embodiment, the balls are arranged in 4 circles and 12 in each circle.

The limiting plate 11 limits the relative displacement of the guide seat 9 and the guide rod 10, and prevents the ball 13 from scattering due to the fact that the screw rod 3 is operated by mistake to cause the relative displacement of the guide seat 9 and the guide rod 10 to be overlarge when no product is calibrated.

The axial dimensions of the guide seat 9, the ball support 12 and the guide rod 10 in the guide assembly 4 can be adjusted to different degrees according to the dimensions of the calibration object in all directions: the sizes of the calibration objects are consistent, and the axial size can be shorter; the worse the dimensional consistency of the calibration object, the more inconsistent the distance the top plate 5 translates in each direction, and at this time the axial dimensions of the guide shoe 9, the ball support 12 and the guide rod 10 need to be properly lengthened.

Referring to fig. 6, the utility model discloses a calibration fixture 20 installs and fixes on revolving stage 22 mesa, and the calibration object (being used to group) 21 that need carry out the demarcation is fixed on calibration fixture 20, and during the calibration, the calibration work of six faces can be accomplished to manual upset calibration object (being used to group) 21.

The above is only the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. The utility model provides a mark frock which characterized in that: the calibration tool comprises an installation transition plate, wherein two sides of the installation transition plate are provided with limiting surfaces, a locking and positioning device is arranged on the limiting surface on one side of the installation transition plate, the locking and positioning device comprises a top plate, an installation plate, a screw rod, a screw and a guide assembly which plays a role in guiding the top plate, the installation plate is connected with the top plate through the screw rod and the screw, the guide assembly is an even number group and is symmetrically arranged on two sides of the screw rod.

2. The calibration tool of claim 1, wherein: the outer end of the screw rod is of a cross-shaped structure or a grasping handle structure, the outer side of the inner end of the screw rod is of an external thread cylindrical structure in threaded connection with the mounting plate, a through hole through which a screw can pass is formed in the top plate, and the screw passes through the through hole and is in threaded connection with the screw rod.

3. The calibration tool of claim 2, wherein: the length of the screw is that a gap exists between the screw head and the end face of the through hole of the top plate in a screwed state after the screw is screwed in.

4. The calibration tool of claim 3, wherein: the direction subassembly includes ball support, ball and the limiting plate of guide holder, guide bar, restriction ball position, the guide holder sets up in the mounting panel, be provided with the direction via hole that can let the guide bar pass in the guide holder, ball support encircles and sets up between guide holder and guide bar, the ball sets up in ball support, the guide bar outer end is provided with the limiting plate.

5. The calibration tool of claim 4, wherein: the difference between the diameter of the inner circle of the guide seat and the diameter of the outer circle of the guide rod is required to ensure that the interference of the ball is 0.01 mm-0.015 mm after the ball is loaded.

6. The calibration tool of claim 5, wherein: the guide seat and the guide rod are made of bearing steel or alloy steel, and the balls are steel balls.

7. Calibration tooling according to any one of claims 1 to 6, characterized in that: the installation transition plate is made of light metal or hard metal, the light metal is made of aluminum alloy or magnesium-aluminum alloy, and the hard metal is stainless steel or alloy structural steel.

8. The calibration tool of claim 7, wherein: when the installation transition plate is made of light metal, an installation reference positioning block is arranged on the upper surface of the bottom surface of the installation transition plate, an orientation reference positioning block is arranged on a limiting surface of the installation transition plate, which corresponds to the other side of the locking positioning device, and the installation reference positioning block and the orientation reference positioning block are made of stainless steel or alloy structural steel.

9. The calibration tool of claim 8, wherein: the limiting surface is a limiting table or a limiting plate.

10. The calibration tool of claim 9, wherein: the installation transition plate is provided with an installation hole and a lightening hole, and the lightening hole is arranged in the center of the installation transition plate.