WO2013037190A1

WO2013037190A1 - Inner diameter micrometer

Info

Publication number: WO2013037190A1
Application number: PCT/CN2012/001268
Authority: WO
Inventors: 孙生强
Original assignee: 苏州蓝王机床工具科技有限公司
Priority date: 2011-09-16
Filing date: 2012-09-17
Publication date: 2013-03-21
Also published as: GB201406407D0; AU2012307997B2; AU2012307997A1; GB2509447A

Abstract

An inner diameter micrometer, comprises a fixing bend measuring rod (12), a moving bend measuring rod (15), a transmission shaft (28), a supporting sleeve (2), a differential sleeve (4), an adjusting knob (7), a ruler body (9), and a digital display device (52) specially used for the inner diameter micrometer. The fixing bend measuring rod (12) and the moving bend measuring rod (15) are provided with a fixing bend measuring head (13) and a moving bend measuring head (14) respectively, the fixing bend measuring rod (12) is connected with the ruler body (9), the moving bend measuring rod (15) is connected with the supporting sleeve (2) and the transmission shaft (28), the transmission shaft (28) is connected with the differential sleeve (4) and the adjusting knob (7), the supporting sleeve (2) is connected with the ruler body (9) and the differential sleeve (4), the ruler body (9) of the digital inner diameter micrometer is provided with a digital display device (52). Limitations and shortcomings in measuring process using present measuring tools are effectively solved by the inner diameter micrometer, which meets the requirements for accuracy and convenience in measuring process.

Description

Inner diameter micrometer

Technical field

The present invention relates to an inner diameter micrometer, and in particular to an inner diameter micrometer capable of easily and quickly measuring the inner diameter of a workpiece.

Background technique

At present, the precision measurement of the inner diameter of the workpiece is mainly realized by the outer diameter micrometer with the inner diameter gauge. There are also a three-point inner diameter micrometer and a straight rod inner diameter micrometer, but the measurement process is not convenient or limited by the aperture diameter size. There are certain limitations and operational deficiencies in the method and scope. In the inner diameter measurement process, there is no such a convenient, fast, simple and accurate measurement tool and measurement method as the outer diameter micrometer measurement. In terms of measurement convenience and accuracy, the internal diameter micrometer (ZL200920174644. 7) and multi-purpose are often used. The digital internal diameter micrometer (201110071791. 3; 201120080275. 2) three patents have a certain influence on the measurement accuracy in the transmission mode and component structure design.

Summary of the invention

In order to overcome the deficiencies of the above inner diameter micrometer, the present invention provides a brand new inner diameter micrometer, which has a key breakthrough in the component transmission structure and measurement principle, by effectively reducing and changing the transmission chain and transmission mode inside the transmission mechanism, It effectively solves the inconvenience of the conventional inner diameter measurement, and achieves the requirement of convenient and accurate measurement of the inner diameter size accuracy.

The technical solution adopted by the present invention to solve the technical problem is as follows: The inner diameter micrometer includes a fixed elbow rod, a moving elbow rod, a transmission shaft, a support sleeve, a micro cylinder and an adjustment knob, a ruler body and a dedicated digital display inner diameter. Micrometer digital display device; characterized in that: fixed elbow probe U3) and moving elbow (14) are respectively mounted on fixed elbow rod (12) and moving elbow rod (15), fixed elbow test The rod (12) is connected to the ruler (9), the moving elbow rod (15) is connected to the support sleeve (2) and the drive shaft (28), the drive shaft (28) and the differential cylinder (4) and the adjustment knob ( 7) Connection, support sleeve (2> connected to the ruler (9) and the differential cylinder (4), dedicated to the internal diameter of the digital micrometer (9) A digital display device (52) is mounted thereon.

The micrometer fixed elbow rod (12) is provided with a fixed elbow rod and a ruler fit plane (37> and a fixed elbow rod and a ruler fit cylindrical surface (38) and a positioning pin (36); The head measuring rod (15) is provided with a moving elbow rod scale (1), a moving elbow rod internal thread (39), a plug block (16), a circular arc groove straight wall surface (33) and a circular groove. 3⁄4^面(35); The drive shaft (28) is provided with a screw (40), a ratchet rod mounting hole (41), an oil reservoir (26) and a ball groove (27: ; the support sleeve is simple (2) with differential The cylinder and the support sleeve cooperate with the plane (17), the differential cylinder and the support sleeve cooperate with the cylindrical surface (18), the differential cylinder and the drive shaft cooperate with the cylindrical surface (22), the ball head positioning screw screw hole (42), the support sleeve and The ruler fits the cylindrical surface (43) and the support sleeve groove (44); the differential cylinder (4) is provided with a calibration adjustment hole (5), a knurling (6), a differential cylinder scale (47), and a differential cylinder positioning. Hole (48); adjusting knob (7) is provided with knurling (6), inner ratchet (31), adjusting knob positioning screw hole (49) and adjusting knob and round head screw matching thread (50); The ball head positioning screw (32) is provided with a cylindrical positioning screw cylindrical surface (45) and a ball head positioning screw spherical surface (46); the inner diameter micrometer includes a dedicated digital display internal diameter micrometer with a digital display device (52) and is used for calibration The size of the calibration frame (51); the material of the fixed elbow probe (13) of the inner diameter micrometer and the arc portion of the moving elbow probe (14) and the process thereof include inlaid cemented carbide.

The invention has the beneficial effects that: the transmission chain inside the inner diameter micrometer is reduced, the error caused by excessive transmission chain is effectively eliminated, and the requirement for increasing the measurement precision of the inner diameter micrometer is achieved. The inner diameter micrometer can directly measure the inner diameter of the workpiece, and the measurement is convenient, fast and accurate.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

Figure 1 is a front view of the inner diameter micrometer

Figure 2 is a cross-sectional view of the inner diameter micrometer

Figure 3 is a cross-sectional view of the inner micrometer adjustment knob A-A

Figure 4 is a cross-sectional view of the inner diameter micrometer B-B

Figure 5 is a cross-sectional view of the inner diameter micrometer CC Figure 6 is a schematic diagram of a fixed elbow rod

Figure 7 Schematic diagram of moving elbow rod

Figure 8 is a schematic diagram of the drive shaft

Figure 9 is a schematic view of the support sleeve

Figure 10 is a schematic view of the round head nail

Figure 11 is the main view of the differential cylinder

Figure 12 is a sectional view of the differential cylinder

Figure 13 is a schematic diagram of the adjustment knob

Figure 14 is the checker

Figure 15 is a digital display internal diameter micrometer with digital display

Figure 1 - Figure 15: 1. Move the elbow rod scale, 2. Support sleeve, 3. Differential tube scale value reference line, 4. Differential, 5. Calibration adjustment hole, 6. Knurling, 7. Adjustment Knob, 8. Round head screw, 9, ruler body, 10. Thermal insulation board, 11. Thermal insulation board fixing screw, 12. Fixed elbow measuring rod, 13. Fixed elbow probe, 14. Moving elbow probe , 15, moving elbow rod, 16, plug block, 17. differential cylinder and support sleeve fit plane, 18. differential cylinder and support sleeve with cylindrical surface, 19. spring, 20. support sleeve countersunk head nail , 21. Ball, 22. Micro cylinder and drive shaft with cylindrical surface, 23. Adjustment knob countersunk head, 24. Spring, 25. Ball, 26. Oil reservoir, 27. Ball groove, 28. Transmission shaft, 29. Spring, 30. Ratchet bar, 31. Internal ratchet, 32. Ball head set screw, 33. Circular grooved straight wall, 34. Ball head set screw groove, 35. Circular grooved spherical surface, 36. Locating pin, 37. Fixed elbow rod and ruler fit plane, 38. Fixed elbow rod and ruler fit cylindrical surface, 39. Move elbow rod internal thread, 40. mast, 41. Ratchet rod Mounting hole, 42. Ball head positioning screw threaded hole, 43. Support sleeve and ruler fit cylindrical surface, 44. Support sleeve groove, 45. Ball head positioning screw cylindrical surface, 46. Ball head positioning 螓钌 spherical surface, 47. Micro-cylinder scale, 48. Micro-cylinder positioning screw hole, 49. Adjusting knob to position the screw hole, 50. Adjusting knob and round head screw with thread, 51. Calibration frame, 52. Digital display device.

detailed description

In Figures 1-15, the inner diameter micrometer main body includes: a fixed elbow rod, a 'moving elbow rod, Transmission shaft, support sleeve, differential cylinder and adjustment knob, ruler and digital display unit dedicated to digital internal diameter micrometer; their interconnection and transmission relationship are as follows:

The two probes of the inner diameter micrometer are a fixed elbow probe (13) and a dynamic elbow probe

(14), mounted on the fixed elbow rod (12) and the moving elbow rod (15), the fixed elbow rod (12) connected to the ruler (9), and the moving elbow rod (15) Connected to the support sleeve (2) and the drive shaft (28), the drive shaft (28) is connected to the differential cylinder (4) and the adjustment knob (7), the support sleeve (2) and the ruler (9) and the differential cylinder ( 4) Connect. The ruler body (9) is fixed with a fixed elbow rod (12) and a support sleeve (2), and the support sleeve (2) supports the differential cylinder (4>, and the differential cylinder (4) drives the transmission shaft (28) to rotate. The transmission shaft (28) drives the moving elbow rod (15). The adjustment knob (7) provided on the transmission shaft (28) also drives the transmission shaft (28) to promote the movement of the elbow rod during the measurement process.

(15) For axial movement.

The inner diameter micrometer features, construction and implementation are as follows:

The two probes of the inner diameter micrometer are a fixed elbow probe (13) and a moving elbow probe (14). When the diameter of the inner hole of the workpiece needs to be measured, the elbow rod is fixed before the measurement (13> And move the elbow probe (14) into the inner position d of the checker (51), then rotate the adjustment knob (7) counterclockwise to bring the moving elbow probe (14) into contact with the check frame (51). After the inner position d is heard and the ratchet is heard, the 0-line scale value of the differential cylinder scale (47) (see Figure 11) on the differential cylinder (4) is aligned with the differential on the support sleeve (2). The cylinder scale value reference line (3), when the 0 line scale value is not aligned with the differential barrel scale value reference line (3>, it is adjusted by the calibration adjustment hole (5) on the differential cylinder (4). The differential cylinder (4) and the adjustment knob (7) are recalibrated until the spring (29), the ratchet rod (30), and the inner ratchet (31) inside the adjustment knob (7) naturally emit mechanical transmission slips. After reaching the sound (the structure is shown in Figure 3), the 0 line scale value on the differential tube (4) is still aligned with the differential tube scale value reference line (3> After the verification is completed, the initial measurement scale value (such as 25mm) of the moving elbow scale (1) is pre-designed at the visible position of the ruler (9) for easy reading, and the initial scale value before verification. The distance between the line and the ruler is at least 0. 5rara-lmm, so that the two probes of the inner diameter micrometer are placed in the check frame (51>, and the precision check size d on the inner side of the check frame (51) Matches the initial measurement scale value of the inner diameter micrometer to ensure accurate calibration dimensions.

When the inner diameter is actually measured, the differential cylinder (4) and the adjustment knob (7) are used together. The differential cylinder (4) is used for rapid movement, that is, the probe is quickly moved to or removed from the measurement surface, and the adjustment knob (7) is used. To control the operator's measuring torque, that is, when the probe has touched the measuring surface or '; to achieve the final measured size value, the adjustment knob (7) must be used to control the operator's measurement strength to avoid excessive force And the resulting measurement error.

The two elbow rods of the inner diameter micrometer are respectively a fixed elbow rod (12) and a moving elbow rod (15), and the fixed elbow rod (12) is provided with a fixed elbow rod and a ruler fit. The plane (37) and the fixed elbow rod and the ruler fit the cylindrical surface (38), as shown in Fig. 6, to ensure the positioning accuracy of the fixed elbow rod (12), and at the same time, it is also provided on the side thereof to prevent its movement. The locating pin (36) (shown in Figure 5) is used to ensure the positioning accuracy and strength of the fixed elbow rod (12). The moving elbow measuring rod (15) is provided with a moving elbow measuring rod scale (1), such as when the measured inner diameter is 30. 28mm or 30. 58mm. When the moving elbow measuring rod scale (1) shows a value of 30mn\ or 30. 50mm, the remaining small value is 0. 28mm or 0. 08ram through the differential cylinder scale (47) and the differential cylinder scale value reference line (3) Aligned representation. The moving elbow internal thread (39) is precisely matched with the screw (40) on the drive shaft (28) to perform the knob force transmission and size display of the inner diameter measurement. The outer diameter of the plug (16) is the same as the large diameter of the internal thread of the moving elbow rod (39), and is a precision transitional relationship, which is made after processing the process hole of the crepe (39) in the elbow rod. Protection (see Figure 7). The moving elbow rod (15) is provided with a circular arc straight wall surface (33) and a circular groove spherical surface (35) to match the cylindrical surface of the ball positioning screw on the ball head positioning screw (32) (45) ) and the ball head positioning screw spherical surface (46) restricts the axial movement and positioning of the moving elbow rod (15), and the moving elbow rod (15) and the supporting sleeve (2) have a precise sliding fit relationship.

The screw (40) provided on the inner shaft of the inner diameter micrometer (28) is precisely matched with the internal thread of the moving elbow rod (39) to share the inner diameter measurement transmission and display function (see Fig. 2). The drive shaft (28) is provided with a differential cylinder and a drive shaft with a cylindrical surface (22> to ensure the transmission relationship between the drive shaft (28) and the differential cylinder (4). The ratchet rod mounting hole (41) (see Figure 8) Installed to control the force measurement of its drive shaft The spring (29) and the ratchet rod (30) are used together with the inner ratchet (31) in the adjustment knob (7) (see Figure 3). The oil reservoir ( ²⁶ ) is used to store lubricating oil to lubricate the ratchet rod (30). Friction between the inner ratchet (31). The ball groove (27) is used in conjunction with the adjustment knob countersunk head screw (23), magazine (24) and ball (25) to limit the axial position of the adjustment knob (7) on the drive shaft (28).

The support sleeve of the inner diameter micrometer (2) (see Fig. 9, Fig. 2) is slid over the support sleeve and the sleeve body. The cylindrical surface (43) is fixedly connected with the ruler (9), and the support sleeve (2) is fixed. The differential simplification and support sleeve fit plane (17) and the differential simplification and support sleeve fit the cylindrical surface (18) to carry the differential positioning function of the differential (4), the support sleeve simple groove (44) and the spring (19) The support sleeve countersunk pin (20) and the ball (21) are used in conjunction to limit the axial position of the differential (4) on the support sleeve (2). The ball head positioning screw threaded hole (42) is used to mount the ball head set screw (32).

The knurling (6) on the micrometer (4) of the inner diameter micrometer is used to increase the finger friction during measurement, and the micro cylinder positioning screw hole (48) (see Fig. 12) is used to mount the spring (19), the support sleeve The countersunk nail (20) and the ball (21), the differential cylinder (4) has a function of transmitting the drive shaft (28) knob force and displaying the inner diameter size on the support sleeve (2).

The inner diameter micrometer adjustment knob (7) is provided with a knurling (6) to increase the friction of the finger knob during measurement, the inner ratchet (31> and the spring (29) on the transmission shaft (28), the ratchet rod (30) ) Used to control the knob force of the adjustment knob (7) (see Figure 3). When the operator rotates the adjustment knob (7) counterclockwise, the adjustment knob (7) will drive the transmission shaft (28) and move the elbow rod. (15) The upper probe approaches the surface to be measured. When the workpiece is measured with the adjustment knob (7), the inner ratchet (31) and the ratchet bar (30) will slip when a certain knob force is reached, which indicates that the slip occurs. 3⁄4 measuring force has met the measurement requirements, the inner diameter measurement value can be read, when the value reading is completed, the operator will rotate the adjustment knob (7) clockwise, then the ratchet rod (30) will be in the spring (29) Under the action of the action, the inner ratchet (31) is ejected, and the adjustment knob (7) is caused to drive the moving elbow probe (14) on the transmission shaft (28) to leave the surface to be tested, and the entire measurement process is completed. ) Adjusting knob on the upper adjustment screw hole (49) to install the adjustment knob Countersunk head screws (23), springs (24) and balls (25) to position the adjustment knob (7) in the axial position on the drive shaft (28). Adjustment knob and round head screw The matching thread (50) (see Fig. 13, Fig. 1) cooperates with the round head screw (8) to protect the inner diameter micrometer from dust and beauty.

The inner diameter micrometer ball head positioning screw (32) on the ball head positioning screw cylindrical surface (45) and the ball head positioning nail surface (46) (see Fig. 10, Fig. 4) and the moving elbow rod (15) The circular groove straight wall surface (33) and the circular groove spherical surface (35) are used together to control the axial movement accuracy and the radial positioning position of the moving elbow rod (15), and the ball head positioning screw groove ( 34) is the processing tank.

The inner diameter micrometer digital display device (52) (see FIG. 15) is dedicated to the digital display inner diameter micrometer of the inner diameter micrometer, and the digital display technology of the digital display device and the inner diameter micrometer transmission mechanism is known in the art. No longer.

The inner diameter micrometer calibration frame (51) is an accessory for the inner diameter micrometer, and the inner side of the calibration frame (51) is provided with a precision calibration size d, which is mainly used for verifying the initial measurement standard of the inner diameter micrometer. The test method is a conventional technique. The heat shield (10) on the inner diameter micrometer (9) is fixed by the heat shield fixing screw (11) and is mainly used for accuracy measurement.

Compared with the traditional inner diameter measuring tools and methods, the inner diameter micrometer is ingenious, simple, reasonable and accurate, and can accurately and effectively measure the inner diameter of the workpiece, which is convenient for saving the operator's measuring time and improving the inner diameter processing precision. New products in the field of internal diameter measurement will have a positive impact on the progress of machining processes.

Claims

: Rights Requirements

The inner diameter micrometer comprises: a fixed elbow rod, a moving elbow rod, a transmission shaft, a support sleeve, a micro cylinder and an adjustment knob, a ruler and a digital display device dedicated to the digital internal diameter micrometer; : Fixed elbow probe (13) and moving elbow probe ( ) are mounted on fixed elbow probe (12) and moving elbow probe (15), fixed elbow probe (12) and ruler (9) Connection, the moving elbow rod (15) is connected with the support sleeve (2) and the transmission shaft (28), and the transmission shaft (28) is connected with the differential (4) and the adjustment knob (7), the support sleeve (2) Connected to the ruler (9) and the differential cylinder (4), the scale body (9) dedicated to the digital internal diameter micrometer is provided with a digital display device (52). The inner diameter micrometer according to claim 1, wherein: the fixed elbow rod (12) is provided with a fixed elbow rod and a ruler matching plane (37), and a fixed elbow rod and a ruler fit cylinder. Surface (38) and locating pin (36).

The inner diameter micrometer according to claim 1, wherein: the moving elbow rod (15) is provided with a moving elbow rod scale (1), a moving elbow rod internal thread (39), and a plug ( 16), arc groove straight wall surface (33) and circular groove groove spherical surface (35).

The inner diameter micrometer according to claim 1, wherein the drive shaft (28) is provided with a screw (40), a ratchet rod mounting hole (41), an oil reservoir (26), and a ball groove (27).

The inner diameter micrometer according to claim 1, characterized in that: the support sleeve (2) is provided with a matching cylinder and a supporting sleeve matching plane (17), the differential cylinder and the supporting sleeve are matched with the cylindrical surface (18), and the differential The cylinder and the drive shaft cooperate with the cylindrical surface (22), the ball head positioning screw 3⁄4" screw hole (42), the support sleeve and the ruler fit cylindrical surface (43), and the support sleeve groove (44).

The inner diameter micrometer according to claim 1, characterized in that: the differential cylinder (4) is provided with a calibration adjustment hole (5), a knurling (6), a differential cylinder scale (47), and a differential cylinder positioning pupil (48). ).

The inner diameter micrometer according to claim 1, characterized in that: the adjusting knob (7) is provided with a knurling (6), an inner ratchet (31), an adjusting knob positioning screw hole (49), an adjusting knob and a round head screw. Fit the thread (50).

The inner diameter micrometer according to claim 1, characterized in that: the ball head positioning screw (32) is provided with a ball head positioning screw cylindrical surface (45) and a ball head positioning screw spherical surface (46).

The inner diameter micrometer according to claim 1, characterized by comprising: a dedicated digital display inner diameter micrometer with a digital display device (52) and a calibration frame (51) for verifying the size.

The inner diameter micrometer according to claim 1, characterized in that the material for the arc portion of the fixed elbow probe (13) and the moving elbow probe (14) and the process thereof include the inlaid cemented carbide.