CN210221025U

CN210221025U - High-precision bar runout measuring instrument

Info

Publication number: CN210221025U
Application number: CN201921367288.0U
Authority: CN
Inventors: Qibing Huang; 黄齐冰
Original assignee: Dongguan Steele Precision Instrument Co ltd
Current assignee: Dongguan Steele Precision Instrument Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-03-31
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a high accuracy rod measuring apparatu of beating, comprising a base plate, be equipped with the stop gear of placing the work piece axle and the measuring mechanism of measuring the work piece axle on the bottom plate, stop gear is including first V type platform and the second V type platform that is located the bottom plate, be equipped with first ceramic rod and second ceramic rod in the V type groove of first V type platform and second V type platform respectively, place the work piece axle in the V type cavity that first ceramic rod and second ceramic rod constitute, measuring mechanism includes drive work piece axle pivoted and goes up the pinch roller and with the first measurement lever table of work piece axle looks contact, the pinch roller dabber of going up the pinch roller passes through motor or hand and rotates, the detection pointer and the work piece axle of first measurement lever table contact, first measurement lever table passes through locking mechanism and fixes on the second slider, the second slider is located the second slide rail. The device has the advantages of simple structural design, convenient processing, simple installation process, low production cost and high measurement precision which can reach 0.0001mm, and can replace a plurality of complex measurement instruments.

Description

High-precision bar runout measuring instrument

Technical Field

The utility model relates to a measuring instrument improves the design technical field, especially relates to a high accuracy rod measuring apparatu of beating.

Background

The existing concentricity tester structure adopts a three-axis centering measurement principle, an outer cylindrical surface is a rotation reference, and the concentricity tester structure can also be used for bar (mandrel) jumping measurement, but the requirement on precision jumping is less than or equal to 0.005mm bar (grinding mandrel), and the traditional concentricity tester can not reach the measurement requirement. In addition, a general user measures a bar (mandrel), usually puts the bar (mandrel) on a group of V-shaped block V-shaped surfaces, stirs the bar by hands, and measures the bar by a watch, so that the defect is unstable in precision, and abnormal jumping can be generated. Because the processing of the main shaft of the concentricity tester has certain allowable error, the highest main shaft jumping precision is less than or equal to 0.001mm according to the requirement of the main shaft on the current market, but the clamping mode is cylindrical surface clamping, the cylindricity of the whole main shaft can also influence the jumping during the clamping rotation, and the comprehensive measurement precision of the double main shafts can be less than or equal to 0.003-0.005mm actually, so that the measurement precision can not meet the measurement requirement of the high-precision grinding mandrel at present. In addition, the V-shaped block V-shaped support measurement mode is that the V-shaped block V-shaped support measurement mode is stirred by hands and is measured by a meter, and the defects comprise four points: firstly, the hand rotation is unstable, abnormal jumping can be generated, and especially when a small mandrel is measured, artificial abnormal jumping is easily generated; secondly, the contact area of the V-shaped surface is too large, so that a measurement error is generated, and thirdly, the measurement precision of the V-shaped surface cannot meet the requirement of high-precision rapid measurement; fourth, the rotational speed is uncontrollable, only can stir intermittently, the hand is pressed down and is very easy to be influenced by the force to beat.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a high accuracy rod measuring apparatu of beating, its structural design is simple, the processing of being convenient for, and installation simple process, low in production cost, measurement accuracy is high, can replace many complicated measuring apparatu.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a high accuracy rod measuring apparatu that beats, includes the bottom plate, is equipped with the stop gear who places the work piece axle and the measuring mechanism who measures the work piece axle on the bottom plate, stop gear including the first V type platform and the second V type platform that are located the bottom plate, be equipped with first ceramic rod and second ceramic rod in the V type groove of first V type platform and second V type platform respectively, place the work piece axle in the V type cavity that first ceramic rod and second ceramic rod constitute, measuring mechanism including drive work piece axle pivoted go up the pinch roller and with the first measurement lever table of work piece axle contact, the pinch roller dabber of going up the pinch roller passes through motor or hand and rotates, the detection gauge needle and the work piece axle contact of first measurement lever table, first measurement lever table passes through locking mechanism and fixes on the second slider, the second slider is located the second slide rail.

Furthermore, as mentioned above, the vertical plate of the locking mechanism is connected with the lever meter clamping knob, the horizontal plate of the locking mechanism is installed on the fine adjustment plate of the measuring meter, and the fine adjustment plate of the measuring meter is contacted with the second sliding block through the fine adjustment screw and the lever fine adjustment elastic sheet.

Furthermore, the lever fine adjustment elastic sheet is respectively connected with the second sliding block and the measuring meter fine adjustment plate through threads.

Furthermore, as mentioned above, the side portion of the second slider is connected with the pre-tightening sheet metal part through the pre-tightening screw, and the lower portion of the pre-tightening sheet metal part is close to the second slide rail.

Furthermore, the locking mechanism is provided with a symmetrical vertical plate and is also connected with a second measuring lever meter.

Furthermore, as mentioned above, the second slide rail is arranged on the bottom plate, and one end of the second slide rail is provided with a limiting block.

Furthermore, as mentioned above, the first V-shaped platform and the second V-shaped platform are respectively connected with the inclined guide plate on the bottom plate through oblique pull screws, the side part of the second V-shaped platform is provided with a limiting support, the limiting support is provided with a limiting mandrel, and the limiting mandrel is in concentric contact with the workpiece shaft.

Furthermore, as above, the pressing wheel mandrel is connected with the upper pressing wheel mechanism through the first positioning ring and the second positioning ring, the upper pressing wheel mechanism comprises a first sliding block and a first sliding rail matched with the first sliding block, and the first sliding rail is installed on the stand column.

Furthermore, as above the stand top install the limiting plate, the stand lateral part is equipped with the locating piece, the first slider of bolted connection through taking the locking knob of locating piece, the stand is fixed on the base, the base passes through the oblique screw and links to each other with the inclined plane baffle on the bottom plate.

Furthermore, the pinch roller mandrel is connected with a motor or a hand-operated wheel through a coupling.

Compared with the prior art, the beneficial effects of the utility model are that: the device has the advantages of simple structural design, convenient processing, simple installation process, low production cost and high measurement precision which can reach 0.0001mm, and can replace a plurality of complex measuring instruments as a precision measurement means, such as a cylindricity instrument, and measure the concentricity, the coaxiality and the roundness of a precision shaft core.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a rear view of the present invention;

fig. 4 is a right side view of the present invention;

fig. 5 is a top view of the present invention;

fig. 6 is a perspective view of an embodiment of the present invention;

fig. 7 is a perspective view of a second embodiment of the present invention.

The labels in the figures are: 1. a first knob; 2. a first V-shaped table; 3. a second knob; 4. a second V-shaped table; 6. a motor; 7. a limiting block; 8. a first measuring lever meter; 9. a lever indicator clamping knob; 10. a fine adjustment plate of the measuring instrument; 11. a second measuring lever indicator; 14. a first ceramic rod; 15. a second ceramic rod; 16. detecting a pointer; 17. a column; 18. a limiting plate; 19. a first slide rail; 20. a first slider; 21. a coupling; 22. a first positioning ring; 23. an upper pinch roller mechanism; 24. a second positioning ring; 25. a pinch roller mandrel; 26. an upper pinch roller; 27. a workpiece shaft; 28. positioning blocks; 29. locking the knob; 30. a limiting mandrel; 31. a limiting bracket; 32. pre-tightening the sheet metal part; 33. a locking mechanism; 34. a base; 35. oblique drawing screws; 36. a base plate; 37. the lever finely adjusts the elastic sheet; 38. a second slider; 39. a second slide rail; 40. pre-tightening the screw; 41. fine adjustment of screws; 43. hand-operated wheel.

Detailed Description

The following detailed description is provided to further explain the technical features and advantages of the present invention by referring to the accompanying drawings in combination with the embodiments.

As shown in fig. 1-7, the utility model discloses a high-precision rod runout measuring instrument, which comprises a bottom plate, a limiting mechanism for placing a workpiece shaft 27 and a measuring mechanism for measuring the workpiece shaft are arranged on the bottom plate, the limiting mechanism comprises a first V-shaped platform 2 and a second V-shaped platform 4 which are arranged on the bottom plate 36, a first ceramic rod 14 and a second ceramic rod 15 are respectively arranged in the V-shaped grooves of the first V-shaped platform and the second V-shaped platform, the ceramic rods can be replaced by tungsten steel rods, etc., the workpiece shaft is placed in the V-shaped cavity formed by the first ceramic rods and the second ceramic rods, the measuring mechanism comprises an upper pinch roller 26 for driving the workpiece shaft to rotate and a first measuring lever meter 8 in contact with the workpiece shaft, a pinch roller mandrel 25 of the upper pinch roller rotates through a motor 6 or hand shaking, the upper pinch roller is a stainless steel wheel, a thermal glue coating mode is adopted, the friction coefficient of the workpiece shaft driven by the rotational energy is increased, the anti-corrosion performance is ensured to be certain, the anti-corrosion device is not deformed when meeting oil and is not easy to age, the detection pointer 16 of the first measurement lever indicator is in contact with a workpiece shaft, the first measurement lever indicator is fixed on the second sliding block 38 through the locking mechanism 33, and the second sliding block is positioned on the second sliding rail 39.

Furthermore, the vertical plate of the locking mechanism is connected with the lever meter clamping knob 9, the horizontal plate of the locking mechanism is installed on the micrometer dial gauge 10, and the micrometer dial gauge is contacted with the second sliding block through the micrometer screw 41 and the lever micrometer adjusting elastic sheet 37. The lever fine-tuning elastic sheet is respectively connected with the second sliding block and the measuring meter fine-tuning plate through threads. The side part of the second sliding block is also connected with a pre-tightening sheet metal part 32 through a pre-tightening screw 40, and the lower part of the pre-tightening sheet metal part is close to the second sliding rail. The locking mechanism is provided with a symmetrical vertical plate and is also connected with a second measuring lever indicator 11. The second slide rail establish on the bottom plate, stopper 7 is equipped with to the one end of second slide rail. The locking mechanism is a U-shaped part, a horizontal plate of the U-shaped part is fixed on the fine adjustment plate of the measuring meter, a vertical plate of the U-shaped part extends outwards to form a hollow rod piece, a supporting rod piece for measuring the lever meter is fixed in one cavity of the hollow rod piece, the supporting rod piece is locked through a screw located in the other cavity of the hollow rod piece, and the screw is connected with a lever meter clamping knob.

Further, first V type platform and second V type platform link to each other with the inclined plane baffle on the bottom plate through drawing screw 35 to one side respectively, draw the screw to one side and connect first knob 1 and second knob 3 respectively, second V type platform side portion installs spacing support 31, sets up spacing dabber 30 on the spacing support, spacing dabber and the concentric contact of work piece axle. The pinch roller mandrel is connected with an upper pinch roller mechanism 23 through a first positioning ring 22 and a second positioning ring 24, the upper pinch roller mechanism comprises a first sliding block 20 and a first sliding rail 19 matched with the first sliding block, and the first sliding rail is arranged on the upright post 17. The top of the upright post is provided with a limiting plate 18, the side part of the upright post is provided with a positioning block 28, the positioning block is connected with a first sliding block through a bolt with a locking knob 29, the upright post is fixed on a base 34, and the base is connected with an inclined guide plate on a bottom plate through an inclined pull screw. The pinch roller mandrel is connected with a motor or a hand-operated wheel 43 through a coupler 21. As shown in FIG. 7, the manual shaking hand-operated wheel drives the upper pressure wheel to rotate so as to realize the measuring operation.

The utility model discloses the device is to prior art's problem, a high accuracy rod measuring apparatu of beating is provided, only need to guarantee that supporting V profile is processed out in pairs, in order to guarantee to pair the position precision with the V-arrangement of V profile complex ceramic rod (tungsten rod) combination, alright guarantee to be surveyed workpiece shaft installation center coaxial, these two sets of V type platforms and bottom plate cooperation hookup are direct that the right angle leans on the limit moreover, and through inclined plane to pulling force and reaction force, make V type platform lean on naturally in the right angle edge, and guarantee the parallel precision of V type platform. In contrast, the bottom plate processing technology can be achieved only by plane grinding, the processing cost is low, the space positioning precision of the invention can be guaranteed within 0.002mm, the whole volume of the mechanism is greatly reduced, the mechanism can be made into a portable small-sized high-precision bar runout measuring instrument, the fixing mode of the upper pinch roller rotating mechanism is the same, the rapid and accurate positioning of the measurement of workpiece shafts with different lengths is realized, the upper pinch roller mechanism adopts a linear guide rail vertical upward moving structure, and when the mechanism is designed into a motor (electric motor), the upper pinch roller utilizes the dead weight acting force and the reaction force and drives the workpiece shafts to rotate by the friction force of a stainless steel rubber covered wheel. In addition, the measuring mechanism also adopts a linear guide rail translation structure to realize that the quick movement is fixed and the measurement jump is carried out on different cross sections, the measuring mechanism is also provided with a fine adjustment mechanism, a lever fine adjustment elastic sheet (spring sheet) is used as a second sliding block to be fixedly connected with a fine adjustment plate of the measuring meter, the fine adjustment screw is used as a fulcrum, the fine adjustment can be precisely adjusted to press down a detecting probe to act on the excircle measuring surface of a workpiece shaft, the pressing displacement of the detecting probe is easily and precisely controlled, the length of the fulcrum of the lever fine adjustment elastic sheet and the fulcrum of the fine adjustment screw is longer than the fixed position of the measuring lever to form a certain force arm proportional relation, the fine thread pitch of the fine adjustment screw enables fine adjustment to be easier to ensure the controllability of fine adjustment, the spring sheet is fixedly connected, the gapless fixation of the measuring meter is ensured, the error jump. The structure has the advantages of simple design, convenient processing, simple installation process, low production cost and high measurement precision which can reach 0.0001mm, and can replace a plurality of complex measuring instruments as a precision measurement means, such as a cylindricity instrument, and the concentricity, the coaxiality and the roundness of a precision shaft core.

The utility model discloses in the device, motor and supporting speed reducer and corresponding control system, measurement lever table, threaded connection or screw etc. are prior art or material, and affiliated technical staff can directly purchase or order from the market according to required product model and specification.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The present invention is described in detail in the above embodiments, and it should be understood that the described embodiments are not limited to the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. The utility model provides a high accuracy rod measuring apparatu that beats, its characterized in that includes the bottom plate, is equipped with the stop gear who places the work piece axle and the measuring mechanism who measures the work piece axle on the bottom plate, stop gear including the first V type platform and the second V type platform that are located the bottom plate, be equipped with first ceramic rod and second ceramic rod in the V type groove of first V type platform and second V type platform respectively, place the work piece axle in the V type cavity that first ceramic rod and second ceramic rod constitute, measuring mechanism including drive work piece axle pivoted last pinch roller and with the first measurement lever table of work piece axle contact, the pinch roller dabber of going up the pinch roller passes through the motor or hand and rotates, the detection pointer and the work piece axle contact of first measurement lever table, first measurement lever table passes through locking mechanism to be fixed on the second slider, the second slider is located the second slide rail.

2. The high-precision bar runout measuring instrument according to claim 1, wherein the vertical plate of the locking mechanism is connected with the lever meter clamping knob, the horizontal plate of the locking mechanism is mounted on the micrometer adjusting plate, and the micrometer adjusting plate is in contact with the second sliding block through a micrometer screw and a lever micrometer adjusting spring.

3. The high-precision bar runout measuring instrument according to claim 2, wherein the lever fine tuning elastic pieces are respectively connected with the second sliding block and the measuring meter fine tuning plate through threads.

4. The high-precision bar runout measuring instrument according to claim 3, wherein the side of the second slider is further connected with a pre-tightening sheet metal part through a pre-tightening screw, and the lower part of the pre-tightening sheet metal part is close to the second slide rail.

5. The high precision bar runout gauge according to claim 4, wherein the locking mechanism is provided with a symmetrical vertical plate, and the locking mechanism is further connected with a second measuring lever meter.

6. The high-precision bar runout measuring instrument according to claim 5, wherein the second slide rail is provided on the bottom plate, and a stopper is provided at one end of the second slide rail.

7. The high-precision bar runout measuring instrument according to any one of claims 1 to 6, wherein the first V-shaped table and the second V-shaped table are respectively connected with the inclined guide plate on the bottom plate through oblique screws, a limiting bracket is arranged at the side part of the second V-shaped table, a limiting mandrel is arranged on the limiting bracket, and the limiting mandrel is in concentric contact with the workpiece shaft.

8. The high-precision bar runout measuring instrument according to claim 7, wherein the pressing wheel core shaft is connected with the upper pressing wheel mechanism through a first positioning ring and a second positioning ring, the upper pressing wheel mechanism comprises a first sliding block and a first sliding rail matched with the first sliding block, and the first sliding rail is mounted on the upright post.

9. The high-precision bar runout measuring instrument according to claim 8, wherein the top of the upright post is provided with a limiting plate, the side of the upright post is provided with a positioning block, the positioning block is connected with the first slide block through a bolt with a locking knob, the upright post is fixed on a base, and the base is connected with the inclined guide plate on the bottom plate through a diagonal screw.

10. The high-precision bar runout measuring instrument according to claim 9, wherein the pinch roller mandrel is connected with a motor or a hand-operated wheel through a coupling.