WO2013020373A1 - 内螺纹千分尺 - Google Patents

内螺纹千分尺 Download PDF

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Publication number
WO2013020373A1
WO2013020373A1 PCT/CN2012/001064 CN2012001064W WO2013020373A1 WO 2013020373 A1 WO2013020373 A1 WO 2013020373A1 CN 2012001064 W CN2012001064 W CN 2012001064W WO 2013020373 A1 WO2013020373 A1 WO 2013020373A1
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WO
WIPO (PCT)
Prior art keywords
internal thread
probe
rod
ruler
thread micrometer
Prior art date
Application number
PCT/CN2012/001064
Other languages
English (en)
French (fr)
Inventor
孙生强
Original Assignee
苏州蓝王机床工具科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州蓝王机床工具科技有限公司 filed Critical 苏州蓝王机床工具科技有限公司
Priority to AU2012292861A priority Critical patent/AU2012292861B2/en
Priority to GB1403034.0A priority patent/GB2507915B/en
Publication of WO2013020373A1 publication Critical patent/WO2013020373A1/zh

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/18Micrometers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/46Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
    • G01B3/48Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable for internal screw-threads
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/08Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
    • G01B5/12Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters

Definitions

  • This invention relates to an internal thread micrometer, and more particularly to an internal thread micrometer capable of quickly measuring the inner diameter of an internal thread.
  • the traditional internal thread diameter measuring method uses the thread stop gauge and the thread gauge to test the machined internal thread.
  • the size of the diameter the operator often can not accurately estimate the value of the thread diameter also needs to be processed when the pass is not passed.
  • the estimated machining allowance is not allowed to lead to the thread stop, which leads to the waste of the medium diameter size.
  • the straight-rod internal thread micrometer in the field of internal thread measurement, it is limited by the inner diameter of the machined workpiece, which limits the measurement range. It is not possible to measure the median diameter of the conventional internal thread more quickly and conveniently.
  • Multi-purpose inner diameter micrometer Multi-purpose inner diameter micrometer
  • the internal thread micrometer can not achieve the desired precision.
  • the invention provides a brand new internal thread 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, the inconvenience of the conventional internal thread measurement is effectively solved, and the requirement for improving the measurement accuracy of the internal thread is achieved.
  • the internal thread micrometer comprises: an exchangeable probe, an elbow rod, a transmission shaft, a support sleeve, a differential cylinder and an adjustment knob, a ruler body and a dedicated A digital display device with a digital internal micrometer; characterized in that: the interchangeable probes (13) and (14) are respectively mounted on the fixed elbow rod (12) and the moving elbow rod (15), and the elbow is fixed
  • the measuring 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) for digital internal thread micrometer
  • the measuring body (56) is provided with a digital display device (56); the interchangeable measuring head comprises a triangular thread probe, a round thread thread probe, a rectangular thread probe and a trapezoidal thread probe, and the replaceable probe includes
  • the fixed elbow rod (12) is provided with a fixed elbow rod and a ruler fit plane (37), a fixed elbow rod and a ruler fit cylindrical surface (38), and a positioning pin (36);
  • the moving elbow 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 an arc a grooved spherical surface (35);
  • a 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 (2) is provided with a 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), the support sleeve
  • the invention has the beneficial effects that: the transmission chain inside the internal thread micrometer is reduced, the error caused by excessive transmission chain is effectively eliminated, and the requirement for improving the measurement precision of the internal thread micrometer is achieved.
  • the internal thread micrometer can directly measure the median diameter of the internal thread, and the measurement is convenient, fast and accurate.
  • Figure 1 is a front view of the internal thread micrometer
  • Figure 2 is a cross-sectional view of the internal thread micrometer
  • Figure 3 is a cross-sectional view of the internal thread micrometer adjustment knob A-A
  • Figure 4 is a cross-sectional view of the internal thread micrometer B-B
  • Figure 5 is a cross-sectional view of the internal thread micrometer C-C
  • Figure 6 is a schematic diagram of the fixed elbow rod
  • FIG. 7 Schematic diagram of moving elbow rod
  • FIG. 8 is a schematic diagram of the drive shaft
  • Figure 9 is the support sleeve
  • Figure 10 is a schematic view of a round head screw
  • 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 a schematic view of a replaceable cone probe
  • Figure 15 is a schematic view of the interchangeable V-shaped probe
  • Figure 16 is a right side view of the interchangeable V-shaped probe
  • Figure 17 is a schematic diagram of the combination of the interchangeable cone probe and the expansion ring.
  • Figure 18 is a schematic diagram of the exchangeable V-shaped probe and expansion ring combination
  • Figure 19 is a schematic view of the expansion ring.
  • Figure 20 is the internal thread micrometer calibration frame
  • Figure 21 is a schematic diagram of the internal thread micrometer
  • Figure 1 - Figure 22 1. Move the elbow rod scale, 2. Support sleeve, 3. Differential cylinder scale value reference line, 4. Differential cylinder, 5. Calibration adjustment hole, 6. Knurling, 7. Adjustment Knob, 8. Round head screw, 9. Shaft, 10. Insulation board, 11. Insulation board fixing screw, 12. Fixed elbow measuring rod, 13. Removable conical probe, 14. Reversible V type Probe, 15. Move elbow rod, 16, plug, 17. Micro-cylinder and support sleeve fit plane, 18. Micro-cylinder and support sleeve fit cylindrical surface, 19. Spring, 20. Support sleeve countersunk head Screw, 21. Ball, 22. Micro cylinder with drive shaft for cylindrical surface, 23. Adjustment knob countersunk head screw, 24. Spring, 25.
  • Adjustment knob threaded hole 50. Adjustment knob and round head screw with thread, 51. Expansion ring groove, 52. Expansion ring, 53. Calibration frame, 54. Calibration frame and interchangeable probe cylindrical positioning surface, 55. Calibration frame and interchangeable probe plane positioning plane. 56. Digital display device
  • the internal thread micrometer main unit includes: an interchangeable probe, an elbow rod, a drive shaft, a support sleeve, a micro cylinder and an adjustment knob, a ruler body, and a micrometer for a digital display internal thread.
  • Number Display device its interconnection and transmission relationship are as follows:
  • the two interchangeable probes of the internal thread micrometer are respectively a replaceable cone probe (13) and a replaceable V-type probe (14), which are respectively mounted on the fixed elbow rod (12) and the moving elbow rod (15)
  • Upper, fixed elbow rod (12) is connected with the ruler (9)
  • moving elbow rod (15) is connected with the support sleeve (2) and the drive shaft (28)
  • the drive shaft (28) is connected with
  • the differential cylinder (4) is connected to the adjustment knob (7)
  • the support sleeve (2) is connected to the ruler (9) and the differential cylinder (4).
  • the ruler body (9) is fixed with a fixed elbow rod (12) and a support sleeve (2), the support sleeve (2) supports the differential cylinder (4), and the differential cylinder (4) drives the transmission shaft (28).
  • the drive shaft (28) drives the moving elbow rod (15) to move.
  • the adjustment knob (7) provided on the transmission shaft (28) also drives the transmission shaft (28) to move the elbow rod during the measurement (15). ) for axial movement.
  • the two interchangeable probes of the internal thread micrometer are a replaceable cone probe (13) and a replaceable V-type probe (14).
  • the interchangeable probe can be replaced.
  • the types of probes include a triangular thread probe, a round thread probe, a rectangular thread probe and a trapezoidal thread probe, the interchangeable probe also includes a dedicated non-replaceable probe; the interchangeable cone probe (13) ) and the interchangeable V-type probe (14) represents only one of the most common preferred options for the internal thread micrometer thread measurement.
  • the interchangeable conical probe (13) and the replaceable V-type probe (14) are provided with a dilatant groove (51) for mounting the expansion ring (52) (see Figs.
  • a replaceable cone The measuring head (13) and the replaceable V-shaped probe (14) are mounted on the fixed elbow rod (12) and the moving elbow rod (15) by the expansion force of the expansion ring (52), respectively. , first put the interchangeable cone probe (13) and the exchangeable V-type probe (14) into the probe position corresponding to the calibration frame (53), and then divide the differential cylinder on the differential cylinder (4)
  • the 0 line scale value is aligned with the differential barrel scale value reference line (3).
  • the differential tube (4) is passed.
  • the upper calibration adjustment hole (5) is adjusted.
  • the 0 line scale value on the differential cylinder (4) is still aligned with the differential drum scale value reference line (3).
  • the calibration frame (53) is provided with an interchangeable probe cylindrical positioning surface (54) and a calibration frame and an interchangeable probe plane positioning plane.
  • the differential cylinder (4) is also used and adjusted.
  • the knob (7) is used in conjunction with the micro-cylinder (4) for rapid movement, ie the probe is quickly moved to or from the measuring surface, and the adjustment knob (7) is used to control the operator's measuring torque, ie when the probe has The adjustment knob (7) must be used to control the operator's measurement force when contacting the measuring surface or as soon as the final measured dimension value is reached, in order to avoid measurement errors caused by excessive force.
  • the two elbow rods of the internal thread micrometer are 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
  • the matching plane (37) and the fixed elbow rod and the ruler are matched with 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 it.
  • Move the locating pin (36) (shown in Figure 5) to ensure the positioning accuracy and strength of the fixed elbow rod (12).
  • the moving elbow rod (15) is provided with a moving elbow rod scale (1) showing the measured workpiece size of 0.5 mm and 1 mm, such as when the measured thread value is 30.28 blue or 30.58 mm, that is, moving The value of the 30mm or 30.50 leg is displayed on the elbow scale (1), and the remaining small value of 0.28 ran or 0.08 mm is indicated by the differential cylinder scale (47) and the differential cylinder scale value reference line (3).
  • Moving the elbow The internal thread of the probe (39) is precisely matched with the screw (40) on the drive shaft (28), and it is responsible for the knob force transmission and size display of the internal thread 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 transitional fit, which is the protection effect after machining the process hole of the internal thread of the elbow rod (39). (See Figure 7).
  • the moving elbow rod (15) is provided with a circular arc groove straight wall surface (33) and a circular groove spherical surface (35) to match the cylindrical surface of the ball head positioning screw on the ball head positioning screw (32) (45) ) and the ball head positioning screw spherical surface (46) limits the axial movement and positioning of the moving elbow rod (15), and the precise sliding fit between the moving elbow rod (15) and the supporting sleeve (2).
  • the screw (40) provided on the drive shaft (28) of the internal thread micrometer is precisely matched with the internal thread (39) of the moving elbow rod to share the internal thread measurement transmission and display function (see Figure 2).
  • the transmission shaft (28) is provided with a differential cylinder and a drive shaft matched with a cylindrical surface (22) to ensure a cooperative transmission relationship between the transmission shaft (28) and the differential cylinder (4).
  • the spring rod mounting hole (41) (see Fig. 8) is equipped with a spring (29), a ratchet rod (30) and an inner ratchet (31) (see Fig. 3) for controlling the transmission shaft force, and the oil reservoir (26) is used for Lubricate the friction between the ratchet bar (30) and the inner ratchet (31).
  • the ball groove (27) is used in conjunction with the adjusting knob countersunk head screw (23), spring (24) and ball (25) to limit the axial position of the adjustment knob (7) on the drive shaft (28).
  • the support sleeve (2) of the internal thread micrometer passes through the support sleeve and the ruler Cooperating with the cylindrical surface (43) and the ruler (9), the differential cylinder on the support sleeve (2) and the support sleeve cooperate with the plane (17) and the differential cylinder and the support sleeve cooperate with the cylindrical surface (18).
  • the support sleeve groove (44) is used together with the spring (19), the support sleeve countersunk screw (20) and the ball (21) to limit the differential cylinder (4)
  • Ball head set screw holes (42) are used to mount the ball head set screw (32).
  • the knurling (6) on the micro-cylinder (4) of the internal thread micrometer is used to increase the finger friction during measurement.
  • the micro-cylinder internal threaded hole (48) (see Figure 12) is used to mount the spring (19), support sleeve The countersunk head screw (20) and the ball (21), the differential cylinder (4) has the function of transmitting the drive shaft (28) knob force and displaying the thread size on the support sleeve (2).
  • the adjustment knob (7) of the internal thread micrometer is provided with a knurling (6) to increase the frictional force of the knob, the inner ratchet (31) and the spring (29) on the transmission shaft (28), the ratchet rod (30) Used in conjunction with 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 drive shaft (28) and move the elbow rod ( 15) The upper probe is close to the surface to be tested.
  • the inner ratchet (31) and the ratchet bar (30) will slip when a certain knob force is reached, which indicates that the The measuring force has already met the measurement requirements.
  • the measured value of the internal diameter of the internal thread can be read.
  • the operator will rotate the adjusting knob (7) clockwise.
  • the ratchet rod (30) will be in the spring.
  • the inner ratchet (31) is ejected by the action of (29), causing the adjustment knob (7) to drive the probe on the drive shaft (28) away from the surface to be tested, completing the entire measurement process.
  • the circular groove straight wall surface (33) and the circular groove spherical surface (35) are used together to control the axial movement accuracy and position of the moving elbow rod (15), and the ball head positioning screw groove (34) is Processing process tank.
  • the internal thread micrometer digital display device (56) (see Fig. 22) is dedicated to the digital internal thread micrometer of the internal thread micrometer, and the number of the digital display device and the internal thread micrometer transmission mechanism
  • the word display technology is a well-known technology and will not be described here.
  • the calibration frame (53) of the internal thread micrometer is an accessory for the internal thread micrometer, which is mainly used for verifying the initial measurement standard of the internal thread.
  • the calibration method belongs to the conventional technology, and the calibration frame (53) is used.
  • the interchangeable probe also includes a fixed probe.
  • the heat shield (10) on the inner body of the internal thread micrometer (9) is fixed by the heat shield fixing screw (11), which is mainly used for the measurement of accuracy.
  • the internal thread micrometer is ingenious, simple, reasonable and accurate, and can accurately and effectively measure the median diameter of the internal thread, so as to save the operator's measurement time and improve the internal thread.
  • the processing precision brings convenience, and it is a new product in the field of internal thread measurement, which will have a positive effect on the progress of the machining process.

Abstract

内螺紋千分尺包括:可换测头(13,14)、弯头测杆(12,15)、传动轴(28)、支撑套筒(2)、微分筒(4)及调节旋钮(7)、尺身(9)和专用于数显内螺紋千分尺的数显装置(56)。其中,两个可换测头(13,14)分别安装在固定弯头测杆(12)和移动弯头测杆(15)上,固定弯头测杆(12)与尺身(9)连接,移动弯头测杆(15)与支撑套筒(2)和传动轴(28)连接,传动轴(28)与微分筒(4)和调节旋钮(7)连接,支撑套筒(2)与尺身(9)和微分筒(4)连接,专用于数显内螺紋千分尺的尺身(9)上设有数显装置(56)。

Description

说 明 书
内螺纹千分尺
技术领域
本发明涉及一种内螺纹千分尺, 尤其是能快速测量内螺紋中径尺寸的内 螺纹千分尺。
背景技术
目前, 对于内螺纹中径的测量还没有一种快速、 简便、 精确的测量工 具和测量方法, 传统的内螺纹中径测量方法采用螺纹止规和螺纹通规来试 测被加工的内螺纹中径尺寸, 操作者往往不能准确估算通规还没有通过时 螺纹中径还需加工的数值, 有时候会出现估计加工余量不准导致螺紋止规 通过, 从而导致中径尺寸超差产生废品。 在内螺纹测量领域虽有一种直棒 式内螺纹千分尺, 但受到加工工件内径尺寸的限制, 导致测量范围受到限 制, 不能更快、 更方便的测量常规内螺纹的中径尺寸。 多用内径千分尺
( ZL200920174644. 7 ) 和多用数显内径千分尺 ( 201110071791. 3; 201120080275. 2 ) 三项专利在传动方式和部件结构设计上对测量精度均有 一定影响。
发明内容
为了克服现有的内螺纹千分尺内部的传动链过多, 导致内螺纹千分尺 无法达到理想精度的不足, 本发明提供一种全新的内螺纹千分尺, 在部件 传动结构和测量原理上产生关键性突破, 通过有效的减少和改变其传动机 构内部的传动链和传动方式, 有效的解决了常规内螺紋测量不便的不足, 达到提高内螺纹测量精度的要求。
本发明解决其技术问题所采用的技术方案是: 该内螺纹千分尺, 其组 成包括: 可换测头、 弯头测杆、 传动轴、 支撑套筒、 微分筒及调节旋钮、 尺身和专用于数显内螺纹千分尺的数显装置; 其特征是: 可换测头 (13 ) 和 (14) 分别安装在固定弯头测杆 (12) 和移动弯头测杆 (15) 上, 固定 弯头测杆 (12) 与尺身 (9) 连接, 移动弯头测杆 (15) 与支撑套筒 (2 ) 和传动轴 (28) 连接, 传动轴 (28) 与微分筒 (4) 和调节旋钮 (7) 连接, 支撑套筒 (2) 与尺身 (9) 和微分筒 (4)连接, 用于数显内螺纹千分尺的 尺身 (9 ) 上设有数显装置 (56 ); 可换测头包括三角螺纹测头、 圆牙螺纹 测头、 矩形螺纹测头和梯形螺紋测头, 其可换测头包括专用的不可换测头; 固定弯头测杆 (12 ) 上设有固定弯头测杆与尺身配合平面 (37 ) 和固定弯 头测杆与尺身配合圆柱表面 (38 ) 以及定位销 (36 ); 移动弯头测杆 (15) 上设有移动弯头测杆刻度 (1 )、 移动弯头测杆内螺纹 (39)、 塞块 (16 )、 圆弧沟槽直壁面(33)和圆弧沟槽球面(35);传动轴(28)上设有螺杆(40)、 棘轮棒安装孔 (41 )、 储油槽 (26) 以及滚珠槽 (27 ); 支撑套筒 (2 ) 上设 有微分筒与支撑套筒配合平面( 17 )、微分筒与支撑套筒配合圆柱表面( 18 )、 微分筒与传动轴配合圆柱表面 (22)、 球头定位螺钉螺孔 (42)、 支撑套筒 与尺身配合圆柱表面 (43)、 支撑套筒沟槽(44); 微分筒 (4) 上设有校准 调节孔 (5)、 滚花 (6 )、 微分筒刻度 (47)、 微分筒内螺纹孔 (48 ); 调节 旋钮 (7 ) 上设有滚花 (6)、 内棘轮 (31 ), 调节旋钮螺紋孔 (49 ) 和调节 旋钮与圆头螺钉配合螺紋(50); 球头定位螺钉(32 )上设有球头定位螺钉 圆柱表面(45 )和球头定位螺钉球面(46 ); 该内螺纹千分尺包括带有数显 装置 (56) 的专用数显内螺纹千分尺以及用于校验尺寸的校验架 (53)。
本发明的有益效果是: 减少了内螺纹千分尺内部的传动链, 有效的消除 了传动链过多产生的误差, 达到提高内螺纹千分尺测量精度的要求。 该内 螺纹千分尺可以直接测量出内螺纹的中径尺寸, 且测量方便、 快捷、 准确。 附图说明
下面结合附图和实施例对本发明进一步说明。
图 1是内螺纹千分尺的主视图
图 2是内螺纹千分尺剖视图
图 3是内螺纹千分尺调节旋钮 A-A的剖视图
图 4是内螺纹千分尺 B-B的剖视图
图 5是是内螺纹千分尺 C-C的剖视图
图 6是固定弯头测杆示意图
图 7移动弯头测杆示意图
图 8是传动轴示意图
图 9是支撑套筒
图 10是圆头螺钉示意图 图 11是微分筒主视图
图 12是微分筒剖视图
图 13是调节旋钮示意图
图 14是可换锥形测头示意图
图 15是可换 V形测头示意图
图 16是可换 V形测头右视图
图 17是可换锥形测头和胀圈组合示意图
图 18是可换 V形测头和胀圈组合示意图
图 19是胀圈示意图。 图 20是内螺纹千分尺校验架
图 21是内螺纹千分尺工作示意图
图 22带有数显装置的数显内螺纹千分尺
图 1-图 22中: 1.移动弯头测杆刻度, 2.支撑套筒, 3.微分筒刻度值基准 线, 4.微分筒, 5.校准调节孔, 6.滚花, 7.调节旋钮, 8. 圆头螺钉, 9.尺 身, 10.隔热板, 11.隔热板固定螺钉, 12.固定弯头测杆, 13. 可换锥形测 头, 14. 可换 V型测头, 15.移动弯头测杆, 16, 塞块, 17. 微分筒与支撑 套筒配合平面, 18.微分筒与支撑套筒配合圆柱表面, 19.弹簧, 20. 支撑 套筒沉头螺钉, 21.滚珠, 22. 微分筒与传动轴配合圆柱表面, 23. 调节旋 钮沉头螺钉, 24.弹簧, 25.滚珠, 26.储油槽, 27.滚珠槽, 28. 传动轴, 29.弹簧, 30.棘轮棒, 31.内棘轮, 32. 球头定位螺钉, 33. 圆弧沟槽直壁 面, 34. 球头定位螺钉沟槽, 35. 圆弧沟槽球面, 36.定位销, 37.固定弯 头测杆与尺身配合平面, 38.固定弯头测杆与尺身配合圆柱表面, 39.移动 弯头测杆内螺纹, 40.螺杆, 41.棘轮棒安装孔,42. 球头定位螺钉螺孔, 43. 支撑套筒与尺身配合圆柱表面, 44. 支撑套筒沟槽, 45. 球头定位螺钉圆 柱表面, 46. 球头定位螺钉球面, 47. 微分筒刻度, 48.微分筒内螺纹孔, 49. 调节旋钮螺纹孔, 50. 调节旋钮与圆头螺钉配合螺纹, 51.胀圈沟槽, 52.胀圈, 53. 校验架, 54.校验架与可换测头圆柱定位表面, 55.校验架与 可换测头平面定位平面。 56.数显装置
具体实施方式
在图 1-图 22中, 该内螺纹千分尺主件包括: 可换测头、 弯头测杆、 传动 轴、 支撑套筒、 微分筒及调节旋钮、 尺身和专用于数显内螺纹千分尺的数 显装置; 其相互连接及传动关系如下:
该内螺纹千分尺的两个可换测头分别为可换锥形测头 (13) 和可换 V 型测头 (14), 分别安装在固定弯头测杆 (12) 和移动弯头测杆 (15) 上, 固定弯头测杆(12)与尺身(9)连接, 移动弯头测杆(15)与支撑套筒(2) 和传动轴 (28)连接, 传动轴 (28) 与微分筒 (4) 和调节旋钮 (7) 连接, 支撑套筒 (2) 与尺身 (9) 和微分筒 (4) 连接。 尺身 (9) 固定着固定弯 头测杆 (12) 和支撑套筒 (2), 支撑套筒 (2) 支撑着微分筒 (4), 微分筒 (4) 带动着传动轴 (28), 传动轴 (28) 带动着移动弯头测杆(15) 移动, 传动轴 (28) 上设有的调节旋钮 (7) 在测量过程中也带动传动轴 (28)促 使移动弯头测杆 (15) 作轴向移动。
该内螺纹千分尺特征、 构造及实施方式如下:
该内螺纹千分尺的两个可换测头分别为可换锥形测头 (13 ) 和可换 V 型测头 (14), 当测量别的类型的螺纹时, 可换测头可以更换, 可换测头的 类型包括三角螺紋测头、 圆牙螺紋测头、 矩形螺紋测头和梯形螺纹测头, 其可换测头也包括专用的不可换测头; 该可换锥形测头 (13) 和可换 V型 测头 (14) 只表示该内螺纹千分尺螺纹测量的一种最常用的优选方案。 该 可换锥形测头 (13) 和可换 V型测头 (14) 上设有用于安装胀圈 (52) 的 胀圈沟槽 (51 ) (见图 14-图 19),可换锥形测头 ( 13)和可换 V型测头 ( 14) 通过胀圈 (52) 的胀力安装分别安装在固定弯头测杆 (12) 和移动弯头测 杆 (15) 上, 测量前, 先将可换锥形测头 (13 ) 和可换 V型测头 (14) 放 进校验架 (53) 相对应的测头位置处, 然后将微分筒(4) 上的微分筒刻度
(47) (见图 11 )的 0线刻度值对准微分筒刻度值基准线(3), 当 0线刻度 值没有对准微分筒刻度值基准线 (3) 时, 通过微分筒 (4) 上的校准调节 孔 (5 )进行调节。 调节完毕后再通过微分筒(4)和调节旋钮(7) 进行二 次校验, 直至通过调节旋钮 (7 ) 里面的弹簧 (29 )、 棘轮棒 (30) 和内棘 轮(31 ) 自然发出机械传动打滑的声音后(其结构见图 3), 微分筒(4)上 0线刻度值仍然对准微分筒刻度值基准线(3)才算校验完成。 校验架(53) 上设有与可换测头圆柱定位表面 (54) 和校验架与可换测头平面定位平面
(55) (其结构见图 20), 以确保校验架尺寸的精确。
当实际测量内螺纹时, 如图 21所示, 也同样釆用微分筒 (4) 和调节 旋钮 (7) 配合进行, 微分筒 (4) 用于快速移动, 即将测头快速移至或移 出测量表面, 而调节旋钮(7) 则用于控制操作者的测量旋力, 即当测头已 经接触测量表面或快要达到最终测量尺寸数值时就必须使用调节旋钮 (7) 来控制操作者的测量力度, 以避免用力过大而产生的测量误差。
该内螺纹千分尺的两个弯头测杆分别为固定弯头测杆 (12) 和移动弯 头测杆(15),固定弯头测杆(12)上设有固定弯头测杆与尺身配合平面(37) 和固定弯头测杆与尺身配合圆柱表面(38), 如图 6所示, 以保证固定弯头 测杆(12)的定位精度,同时在其侧面还设有防止其移动的定位销(36) (如 图 5所示), 以保证固定弯头测杆(12) 的定位精度和强度。 移动弯头测杆 (15) 上设有显示被测量工件尺寸 0.5mm和 1mm整数值的移动弯头测杆刻 度 (1), 如当被测量螺纹的数值为 30.28蘭或 30.58mm时, 即移动弯头测 杆刻度(1)上显示 30mm或 30.50腿数值, 余下的小数值 0.28ran或 0.08mm 通过微分筒刻度 (47)和微分筒刻度值基准线 (3)相对准表示。 移动弯头 测杆内螺紋 (39) 与传动轴 (28) 上的螺杆 (40) 精密配合, 承担内螺紋 测量的旋钮力传递和尺寸显示功能。 塞块 (16) 的外径与移动弯头测杆内 螺纹 (39) 的大径相同, 并为过渡配合关系, 为加工移动弯头测杆内螺紋 (39) 的工艺孔之后所作的保护作用 (见图 7)。 该移动弯头测杆 (15)上 设有圆弧沟槽直壁面( 33 )和圆弧沟槽球面( 35 ),以配合球头定位螺钉( 32 ) 上的球头定位螺钉圆柱表面 (45) 和球头定位螺钉球面 (46) 限制其移动 弯头测杆 (15) 的轴向移动和定位, 移动弯头测杆 (15) 与支撑套筒 (2) 之间为精密滑动配合关系。
该内螺纹千分尺的传动轴 (28) 上设有的螺杆 (40) 与移动弯头测杆 的内螺紋(39)精密配合, 共同承担内螺纹测量传递和显示功能(见图 2)。 传动轴(28)上设有微分筒与传动轴配合圆柱表面(22),以保证传动轴(28) 与微分筒(4) 的配合传动关系。 棘轮棒安装孔(41) (见图 8) 中安装控制 其传动轴测力的弹簧 (29)、 棘轮棒 (30) 和内棘轮 (31) (见图 3), 储油 槽 (26) 用以润滑棘轮棒 (30) 和内棘轮 (31)之间的摩擦。 滚珠槽 (27) 与调节旋钮沉头螺钉(23)、 弹簧 (24) 和滚珠(25) 配合使用来限制调节 旋钮 (7) 在传动轴 (28) 上的轴向位置。
该内螺纹千分尺的支撑套筒(2) (见图 9、 图 2)通过支撑套筒与尺身 配合圆柱表面 (43 ) 与尺身 (9) 过渡配合连接固定, 支撑套筒 (2 ) 上的 微分筒与支撑套筒配合平面(17)和微分筒与支撑套筒配合圆柱表面(18) 承载着微分筒 (4) 的配合定位功能, 支撑套筒沟槽 (44) 与弹簧 (19)、 支撑套筒沉头螺钉 (20) 和滚珠 (21 ) —起配合使用来限制微分筒 (4)在 支撑套筒 (2) 上的轴向位置。 球头定位螺钉螺孔(42) 用于安装球头定位 螺钉 (32)。
该内螺纹千分尺的微分筒 (4) 上的滚花 (6) 用于增加测量时的手指 摩擦力, 微分筒内螺紋孔 (48) (见图 12) 用于安装弹簧 (19)、 支撑套筒 沉头螺钉 (20) 和滚珠 (21 ), 微分筒 (4) 在支撑套筒 (2) 上具有传递传 动轴 (28) 旋钮力和显示螺纹尺寸的功能。
该内螺纹千分尺的调节旋钮(7)上设有滚花(6) 以增加其旋钮时的摩 擦力, 内棘轮 (31 ) 与传动轴 (28) 上的弹簧 (29)、 棘轮棒 (30)配合使 用来控制调节旋钮(7) 的旋钮力 (见图 3), 当操作者逆时针旋转调节旋钮 ( 7 ) 时, 调节旋钮 (7) 会带动传动轴 (28) 和移动弯头测杆 (15) 上的 测头向被测表面靠近, 当开始用调节旋钮 (7) 测量工件时, 内棘轮 (31 ) 与棘轮棒 (30) 在达到一定的旋钮力时会发生打滑现象, 这表明该测量力 量已经满足了测量要求, 可以读取内螺纹中径的测量数值, 当数值读取完 成后, 操作者将调节旋钮(7) 向顺时针方向旋转, 这时棘轮棒(30)会在 弹簧 (29) 的作用下弹出卡着内棘轮 (31 ), 促使调节旋钮 (7 ) 带动传动 轴 (28) 上的测头离开被测表面, 完成整个测量过程。 该调节旋钮 (7)上 的调节旋钮螺纹孔(49) 中安装调节旋钮沉头螺钉(23)、 弹簧 (24) 和滚 珠 (25), 以便定位调节旋钮 (7) 在传动轴 (28) 上的轴向位置。 调节旋 钮与圆头螺钉配合螺纹(50) (见图 13、 图 1 ) 与圆头螺钉 (8) 配合对该内 螺纹千分尺起到防尘和美观的作用。
该内螺纹千分尺的球头定位螺钉 ( 32 )上的球头定位螺钉圆柱表面( 45 ) 和球头定位螺钉球面(46) (见图 10、 图 4) 与移动弯头测杆(15) 上的圆 弧沟槽直壁面 (33) 和圆弧沟槽球面 (35) 配合使用来控制移动弯头测杆 ( 15) 的轴向移动精度和位置, 其球头定位螺钉沟槽(34) 为加工工艺槽。
该内螺纹千分尺的数显装置(56) (见图 22)专用于该内螺纹千分尺的 数显内螺纹千分尺上, 其数显装置与该内螺纹千分尺的传动机构发生的数 字显示技术为公知技术, 在此不再赘述。
该内螺纹千分尺的校验架 (53) 为该内螺纹千分尺的配套附件, 主要 用于校验该内螺纹起始测量基准时所用, 校验方法属于常规技术, 其校验 架 (53) 上的可换测头也包括固定型测头。 该内螺紋千分尺的尺身 (9)上 的隔热板 (10) 由隔热板固定螺钉 (11 ) 固定, 主要用于精度的测量。
该内螺纹千分尺与传统的内螺纹中径测量工具及方法相比, 设计巧妙、 简单、 合理、 精确, 可以准确有效的测量内螺纹的中径尺寸, 为节省操作 者的测量时间, 提高内螺纹加工精度带来便利, 是内螺纹测量领域的新型 产品, 对机械加工工艺的进步将有积极的推动作用。

Claims

权 利 要 求 书
、 内螺纹千分尺, 其组成包括: 可换测头、 弯头测杆、 传动轴、 支撑套筒、 微分筒及调节旋钮、 尺身和专用于数显内螺纹千分尺的数显装置; 其特征 是: 可换测头 (13 ) 和 (14) 分别安装在固定弯头测杆 (12) 和移动弯头 测杆(15 )上, 固定弯头测杆(12)与尺身 (9)连接, 移动弯头测杆(15) 与支撑套筒 (2) 和传动轴 (28) 连接, 传动轴 (28) 与微分筒 (4) 和调 节旋钮 (7) 连接, 支撑套筒 (2) 与尺身 (9) 和微分筒 (4) 连接, 专用 于数显内螺紋千分尺的尺身 (9) 上设有数显装置 (56)。
、 根据权利要求 1所述的内螺紋千分尺, 其特征是: 可换测头包括三角螺紋 测头、 圆牙螺纹测头、 矩形螺纹测头和梯形螺纹测头, 其可换测头包括专 用的不可换测头。
、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 固定弯头测杆 (12)上 设有固定弯头测杆与尺身配合平面 (37) 和固定弯头测杆与尺身配合圆柱 表面 (38) 以及定位销 (36)。
、 根据权利要求 1所述的内螺紋千分尺, 其特征是: 移动弯头测杆 (15 )上 设有移动弯头测杆刻度 (1 )、 移动弯头测杆内螺紋 (39)、 塞块 (16)、 圆 弧沟槽直壁面 (33) 和圆弧沟槽球面 (35)。
、 根据权利要求 1所述的内螺紋千分尺, 其特征是: 传动轴(28 ) 上设有螺 杆 (40)、 棘轮棒安装孔 (41 )、 储油槽 (26) 以及滚珠槽 (27)。
、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 支撑套筒 (2) 上设有 微分筒与支撑套筒配合平面(17)、 微分筒与支撑套筒配合圆柱表面(18)、 微分筒与传动轴配合圆柱表面 (22)、 球头定位螺钉螺孔 (42)、 支撑套筒 与尺身配合圆柱表面 (43 )、 支撑套筒沟槽 (44)。
、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 微分筒 (4) 上设有校 准调节孔 (5 )、 滚花 (6)、 微分筒刻度 (47)、 微分筒内螺纹孔 (48)。 、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 调节旋钮 (7) 上设有 滚花(6)、 内棘轮 (31 ), 调节旋钮螺纹孔(49) 和调节旋钮与圆头螺钉配 合螺紋 (50)。
、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 球头定位螺钉 (32)上 设有球头定位螺钉圆柱表面 (45) 和球头定位螺钉球面 (46)。
0、 根据权利要求 1所述的内螺纹千分尺, 其特征是: 该内螺紋千分尺包括 带有数显装置 (56) 的专用数显内螺纹千分尺以及用于校验尺寸的校验架
( 53)。
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