CN210070867U

CN210070867U - High-precision intelligent aperture testing device

Info

Publication number: CN210070867U
Application number: CN201921005167.1U
Authority: CN
Inventors: 吴行飞; 吕桂芳
Original assignee: Beijing Prosper Precision Machine Tool Co Ltd
Current assignee: Beijing Prosper Precision Machine Tool Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-02-14
Anticipated expiration: 2029-07-01

Abstract

The utility model relates to a high accuracy intelligence aperture testing arrangement, including fixed subassembly, motion measurement subassembly and location centering subassembly, fixed subassembly is used for fixed motion measurement subassembly and location centering subassembly, and the motion measurement subassembly obtains measured data through the motion adjustment measuring position, and location centering subassembly carries out the leveling centering to the work piece, and this high accuracy intelligence aperture testing arrangement, the probe surface of measuring probe is smooth, and the internal surface area of contact with the hole is big, does not harm the internal surface of hole; the measuring range is large, and the measuring device is suitable for measuring workpieces with large inner holes; and the grating ruler is used for measurement, so that the measurement precision is high.

Description

High-precision intelligent aperture testing device

Technical Field

The utility model belongs to the technical field of measure, concretely relates to high accuracy intelligence aperture testing arrangement is applied to the measurement of hole diameter size.

Background

The inner hole diameter is mainly divided into two types, namely two types based on coordinates and two types based on special measuring instruments, which are typically represented by a three-coordinate measuring instrument and a pneumatic measuring instrument, but the pneumatic measuring instrument has a small measuring range, so that the pneumatic measuring instrument is not suitable for being used when the inner hole is large in size. The three-coordinate measuring instrument adopts the probe to carry out contact type measurement, the possibility of scratching the surface of a measured workpiece exists, and the measurement time is relatively long, so that the three-coordinate measuring instrument is difficult to apply in the measurement field requiring the higher integrity of the surface of the inner hole. Therefore, a new testing device is required for high-precision measurement of the diameter of the inner bore.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a measuring range is big, does not harm the high accuracy intelligence aperture testing arrangement on measured workpiece surface.

The technical scheme of the utility model is that: the utility model provides a high accuracy intelligence aperture testing arrangement, includes fixed subassembly, motion measurement subassembly and location centering subassembly, and fixed subassembly is used for fixed motion measurement subassembly and location centering subassembly, and the motion measurement subassembly obtains measured data through the motion adjustment measuring position, and location centering subassembly carries out the leveling centering to the work piece.

Furthermore, the fixing assembly comprises a first fixing table and a second fixing table, the first fixing table and the second fixing table are arranged in an up-down parallel mode, the first fixing table is used for fixing the movement measuring assembly, and the second fixing table is used for fixing the positioning and centering assembly.

Further, the movement measuring assembly comprises a cylinder, a guide rail, a frame, a first sliding block, a second sliding block, a first rack, a gear, a second rack, a third sliding block, a grating ruler measuring head and a measuring probe, wherein the cylinder and the guide rail are fixed on a first fixing table, the first sliding block and the second sliding block are fixedly arranged on the frame, the first sliding block and the second sliding block are arranged on the guide rail in a sliding mode, one end of the cylinder is fixedly connected with the frame, the frame is driven to slide on the guide rail in a reciprocating mode when the cylinder does reciprocating linear motion, the grating ruler and the first rack are fixed on the frame, the first rack is connected with the second rack through the gear, and the second rack, the third sliding block and the grating ruler measuring head are fixed on the fixing base.

Furthermore, two measuring heads of the measuring probe are respectively fixed on the fixing seat and the frame, and the two measuring heads are horizontally aligned.

Further, the positioning and centering assembly comprises a lower positioning column and an upper positioning plate, the centers of the lower positioning column and the upper positioning plate are centered, sliding grooves are formed in the diameter directions of the positioning column and the upper positioning plate, the measuring probe can slide in the sliding grooves, the upper positioning plate is provided with the centering assembly, and the inner hole and the center of the upper positioning plate are centered through synchronous movement of the centering assembly.

Furthermore, a plurality of contact sensors with symmetrical centers are arranged between the lower positioning column and the upper positioning disc.

The utility model discloses following beneficial effect has: according to the high-precision intelligent aperture testing device, the surface of a probe of a measuring probe is smooth, the contact area with the inner surface of an inner hole is large, and the inner surface of the inner hole is not damaged; the measuring range is large, and the measuring device is suitable for measuring workpieces with large inner holes; the grating ruler is used for measurement, and the measurement precision of the grating ruler can reach 0.5 micron.

Drawings

FIG. 1 is a side view of a high precision smart aperture test apparatus.

Fig. 2 is a bottom view of the high-precision smart aperture testing device.

Fig. 3 is a front view of a high-precision smart aperture testing device.

Fig. 4 is a schematic diagram of a positioning and centering structure of the high-precision intelligent aperture testing device.

Wherein the figures include the following reference numerals: 1. a first fixed table; 2. a cylinder; 3. a guide rail; 4. a frame; 5. a first slider; 6. a second slider; 7. a first rack; 8. a gear; 9. a second rack; 10. a third slider; 11. a grating scale; 12. a grating scale measuring head; 13. a measuring probe; 14. a second stationary stage; 15. a lower positioning column; 16. an upper positioning plate; 17. a contact sensor; 18. a chute; 19. a centering assembly; 20. a fixed seat.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a high-precision intelligent aperture testing device comprises a fixing component, a motion measuring component and a positioning and centering component, wherein the fixing component is used for fixing the motion measuring component and the positioning and centering component, the motion measuring component obtains measuring data by adjusting a measuring position through motion, and the positioning and centering component is used for leveling and centering a workpiece.

The fixing assembly comprises a first fixing table 1 and a second fixing table 14, the first fixing table 1 and the second fixing table 14 are arranged in an up-and-down parallel mode, the first fixing table 1 is used for fixing the movement measuring assembly, and the second fixing table 14 is used for fixing the positioning and centering assembly.

The movement measuring component comprises a cylinder 2, a guide rail 3, a frame 4, a first slide block 5, a second slide block 6, a first rack 7, a gear 8, a second rack 9, a third slide block 10, a grating ruler 11, a grating ruler measuring head 12 and a measuring probe 13, wherein the cylinder 2 and the guide rail 3 are fixed on a first fixed platform 1, the first slide block 5 and the second slide block 6 are fixedly arranged on the frame 4, the first slide block 5 and the second slide block 6 are arranged on the guide rail 3 in a sliding manner, one end of the cylinder 2 is fixedly connected with the frame 4, the frame 4 is driven to slide on the guide rail 3 in a reciprocating linear motion manner when the cylinder 2 does reciprocating linear motion, the grating ruler 11 and the first rack 7 are fixed on the frame 4, the first rack 7 is connected with the second rack 9 through the gear 8, the second rack 9, the third slide block 10 and the grating ruler measuring head 12 are fixed on a fixed seat 18, two measuring heads of the measuring probe 13 are respectively fixed on the, and the two measuring heads are horizontally aligned. The surface of the measuring probe 13 is smooth, the contact area with the inner surface of the inner hole is large, and the inner surface is not damaged.

The positioning and centering assembly comprises a lower positioning column 15 and an upper positioning disk 16, the centers of the lower positioning column 15 and the upper positioning disk 16 are centered, the outer contour is circular, a plurality of contact sensors 17 which are centrosymmetric are arranged between the lower positioning column 15 and the upper positioning disk 16, a sliding groove 18 is formed in the diameter directions of the positioning column 15 and the upper positioning disk 16, the measuring probe 13 can slide outwards from the central position in the sliding groove 18, the upper positioning disk 16 is provided with a centering assembly 19, and the inner hole and the center of the upper positioning disk 16 are centered through synchronous movement of the centering assembly 19.

When the inner diameter of a workpiece is measured, the workpiece is firstly placed on the upper positioning plate 16, after a plurality of contact sensors sense signals, the workpiece is flat and can be measured, the cylinder 2 extends to drive the frame 4 to slide on the guide rail 3 to drive one probe of the grating ruler 11 and the measuring probe 13 to move, the first rack 7 moves along with the frame 4, the second rack 9, the third slider 10, the grating ruler measuring head 12, the fixed seat 20 and the other probe of the measuring probe 13 are driven to move in opposite directions through the gear 8, namely, the two probes of the measuring probe 13 move in opposite directions, the grating ruler 11 and the grating ruler measuring head 12 move in opposite directions, when the probe of the measuring probe 13 is in contact with the inner wall of the workpiece, the movement is stopped, and at the moment, the diameter of the inner hole of the workpiece can be calculated by reading the moving distance of the grating ruler probe 12.

The embodiment also provides a testing method of the high-precision intelligent aperture testing device, which specifically comprises the following steps:

s1, selecting a standard gauge within the measurement size range, and measuring the aperture of the standard gauge by using a testing device;

s2, comparing the measured value of the standard gauge aperture with the standard value, and if the comparison result is within the error range, finishing the calibration; if the comparison result is not within the error range, debugging the testing device again, and repeating the previous step until the comparison result is within the error range;

s3, placing the workpiece to be measured, and automatically centering the workpiece;

s4, starting a measurement step by the test device, and controlling the system to drive the air cylinder to move so as to drive the grating ruler and the grating ruler measuring head to move oppositely;

s5, reading the reading of the grating ruler by the control system, wherein the reading of the grating ruler is the aperture of the workpiece;

s6, the control system compares the measured aperture value with a set value, and if the comparison result is within an error range, the workpiece is qualified; and if the comparison result is not within the error range, transmitting the difference value to the numerical control machine tool, analyzing the tolerance overall trend of the workpiece, then performing cutter compensation on the next workpiece, and executing the steps again until the comparison result is within the error range.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. The utility model provides a high accuracy intelligence aperture testing arrangement which characterized in that: the device comprises a fixing component, a movement measuring component and a positioning and centering component, wherein the fixing component is used for fixing the movement measuring component and the positioning and centering component, the movement measuring component obtains measuring data by adjusting a measuring position through movement, and the positioning and centering component is used for leveling and centering a workpiece.

2. A high precision smart aperture test device as claimed in claim 1, wherein: the fixed assembly comprises a first fixed table and a second fixed table, the first fixed table and the second fixed table are arranged in an up-down parallel mode, the first fixed table is used for fixing the movement measuring assembly, and the second fixed table is used for fixing the positioning centering assembly.

3. A high precision smart aperture test device as claimed in claim 1, wherein: the motion measurement assembly comprises a cylinder, a guide rail, a frame, a first sliding block, a second sliding block, a first rack, a gear, a second rack, a third sliding block, a grating ruler measuring head and a measuring probe, wherein the cylinder and the guide rail are fixed on a first fixing table, the first sliding block and the second sliding block are fixedly arranged on the frame, the first sliding block and the second sliding block are arranged on the guide rail in a sliding mode, one end of the cylinder is fixedly connected with the frame, the cylinder drives the frame to slide on the guide rail in a reciprocating mode when in reciprocating linear motion, the grating ruler and the first rack are fixed on the frame, the first rack is connected with the second rack through the gear, and the second rack, the third sliding block and the grating ruler measuring head are fixed on a fixing seat.

4. A high accuracy smart aperture test device as claimed in claim 3, wherein: two measuring heads of the measuring probe are respectively fixed on the fixing seat and the frame, and the two measuring heads are horizontally aligned.

5. A high precision smart aperture test device as claimed in claim 1, wherein: the positioning and centering assembly comprises a lower positioning column and an upper positioning plate, the center of the lower positioning column is centered with the center of the upper positioning plate, sliding grooves are formed in the diameter directions of the positioning column and the upper positioning plate, the measuring probe can slide in the sliding grooves, the centering assembly is arranged on the upper positioning plate, and the inner hole is centered with the center of the upper positioning plate through synchronous movement of the centering assembly.

6. A high accuracy intelligence aperture testing arrangement of claim 5 characterized in that: a plurality of contact sensors which are centrosymmetric are arranged between the lower positioning column and the upper positioning disk.