CN109506559B - A variable diameter deep hole inner diameter measuring tool - Google Patents
A variable diameter deep hole inner diameter measuring tool Download PDFInfo
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- CN109506559B CN109506559B CN201811634100.4A CN201811634100A CN109506559B CN 109506559 B CN109506559 B CN 109506559B CN 201811634100 A CN201811634100 A CN 201811634100A CN 109506559 B CN109506559 B CN 109506559B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
- G01B7/13—Internal diameters
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Abstract
The invention discloses a variable-diameter deep hole inner diameter measuring tool, which comprises a positioning connection module used for connecting a measured workpiece, a measurement display module capable of being placed in a deep hole of the measured workpiece, and a motion transmission module used for carrying the measurement display module, wherein the motion transmission module is respectively connected with the positioning connection module and the measurement display module. The positioning connection module supports the measurement display module and the motion transmission module, the motion transmission module carries the measurement display module to the position to be measured of the deep hole of the measured workpiece, and the measurement display module completes measurement and display of the inner diameter of the position to be measured of the deep hole. The electric inner diameter measuring tool adopts a modularized structure and a high-precision measuring unit, and can obviously improve the accuracy and efficiency of inner diameter detection of the variable-diameter deep hole workpiece.
Description
Technical Field
The invention discloses an electric inner diameter measuring tool, in particular relates to a variable-diameter deep hole inner diameter measuring tool, and belongs to the technical field of deep hole detection tools.
Background
Currently, the traditional hole inner diameter measuring method mainly adopts measuring tools such as calipers, callipers and the like, and the measuring method is inconvenient to operate, low in measuring efficiency and difficult to guarantee in precision. The existing deep hole or ultra-deep hole inner diameter measuring tool is mainly suitable for application occasions of equal-diameter deep hole detection. Along with the wide application of large and ultra-large parts in products such as modern airplanes, ships, large precise instruments and the like, the requirements for high-efficiency special measuring tools for variable-diameter deep holes or ultra-deep hole parts are also more and more urgent.
Disclosure of Invention
The invention aims to solve the technical problems that the existing deep hole measuring tool in the background technology is inconvenient to position and attach and the efficiency of measuring the inner diameter of a deep hole with a variable diameter is low.
In order to solve the problems, the invention adopts the following technical scheme:
the measuring tool comprises a positioning connection module for connecting a measured workpiece, a measurement display module capable of being placed in the deep hole of the measured workpiece, and a motion transmission module for carrying the measurement display module, wherein the motion transmission module is respectively connected with the positioning connection module and the measurement display module;
The positioning connection module comprises a T-shaped hollow shaft I, a positioning frustum, a supporting flat disc I, a fixed disc I, a T-shaped rotary disc I, a Z-shaped clamping jaw and a digital display meter, wherein the positioning frustum is sleeved at one end of the T-shaped hollow shaft I, two uniformly distributed threaded through holes are formed in the small end face of the positioning frustum, a guide hole is formed in the center of the small end face of the positioning frustum, the guide hole is sleeved on the T-shaped hollow shaft I, the supporting flat disc I is fixedly connected to the other end of the T-shaped hollow shaft I, and the supporting flat disc I is fixedly connected with the fixed disc I through a connecting rod;
The first fixed disk is sleeved on the outer circle of the thin end of the T-shaped hollow shaft through a second central through hole, a radial T-shaped chute I is formed in the end face of one side, close to the positioning taper table, of the first fixed disk, a radial slide block I is arranged in the T-shaped chute I, a support shaft I is fixedly connected onto the radial slide block I, the T-shaped rotary disk I is provided with a first central through hole, a waist-shaped groove I is formed in the thick end disk surface of the T-shaped rotary disk, two ends of the waist-shaped groove I are distributed on two circles with different diameters, the thin end of the T-shaped rotary disk I penetrates through the second central through hole to be connected with the output end of the hollow motor;
The measuring display module comprises a cup-shaped cylinder body, a second fixed disc, a second T-shaped rotary disc, a first motor, a beveling disc, a magnetic ruler, a measuring head seat, a digital display meter and a measuring head; the opening of the cup-shaped cylinder is provided with a protective cover, and the bottom of the cup-shaped cylinder is provided with a central hole for a lead; the fixed disk II is fixedly connected to the inner wall of the cup-shaped cylinder body close to the opening, radial T-shaped sliding grooves are formed in the second fixed disk in a circumferential distribution manner, a through hole III is formed in the center of the second fixed disk, the thin end of the second T-shaped rotary disk penetrates through the through hole III to be connected with a motor I, kidney-shaped grooves are formed in the circumferential direction of the end face of the thick end of the second T-shaped rotary disk, the motor I and the encoder are connected with the inner wall of the cup-shaped cylinder body through a fixed support I, the beveling disc is sleeved on the outer circle of the thin end of the second T-shaped rotary disk and is positioned between the second fixed disk and the fixed support I, and the measuring head of the magnetic ruler is tangent to the end face of the beveling disc close to the fixed support I and is fixed on the second fixed disk through the fixed support II;
A radial sliding block II is arranged in the T-shaped sliding groove II, one end of a supporting shaft II is fixedly connected to the radial sliding block II, the other end of the supporting shaft II passes through a bearing II arranged in the kidney-shaped groove II and is connected with a measuring head seat, the measuring head seat is in threaded connection with a measuring head, the measuring head is arranged along the radial direction of the T-shaped rotary table II, a pressure sensor is arranged between the measuring head and the measuring head seat, the height of the measuring head from the center of the T-shaped rotary table II is larger than the radius of the T-shaped rotary table II, and the measuring head extends out of a through hole formed in the cup-shaped cylinder;
The motion transmission module comprises a T-shaped hollow shaft II, a sleeve shaft, a support flat disc II, a feed screw rod, a motor II, a motor III, a driving gear and a driven gear, wherein the large end of the T-shaped hollow shaft II is fixedly connected with the cylinder bottom of a cup-shaped sleeve, a positioning taper table is sleeved on the T-shaped hollow shaft II, the small end face of the positioning taper table is not contacted with the large end of the T-shaped hollow shaft II, the sleeve shaft is sleeved on the T-shaped hollow shaft II through rolling bearings at two ends, one end of the sleeve shaft I is sleeved in a guide hole of the positioning taper table, the support flat disc II is fixedly connected with the other end of the sleeve shaft, one end of the feed screw rod penetrates through a threaded through hole, the other end of the feed screw rod is rotatably connected with the motor II through a threaded through hole, the motor III is mounted on the end face of the support flat disc II, the motor III is mounted on the end face of the same side as the feed screw rod, the motor III is rotatably connected with the driving gear through the support flat disc II, the driving gear is meshed with the driven gear mounted on the other end of the T-shaped hollow shaft II, the motor I is mounted on a display bracket, the motor I is mounted on a power meter, a power meter and a digital meter, a digital meter is mounted on the power meter and a control module is fixedly connected with the power meter module.
The width and the depth of the waist-shaped groove I are respectively equal to the diameter and the height of the bearing I.
The connection between the measuring head seat and the measuring head is along the radial direction of the T-shaped rotary table II, and the height of the measuring head from the circle center of the T-shaped rotary table II is larger than the radius of the T-shaped rotary table II.
A bearing III is arranged between the second fixed disc and the second thin end of the T-shaped rotary disc.
The number of the feed screw rods is two, and the number of the T-shaped sliding grooves I, the number of the waist-shaped grooves II and the number of the T-shaped sliding grooves II are three.
The inclination of the right end face of the beveling disc is designed according to the detection precision of the inner diameter of the deep hole.
The beneficial effects of the invention are as follows:
1. The electric inner diameter measuring tool for the variable diameter deep hole detection adopts an electric positioning connection module, a measurement display module and a motion transmission module, can rapidly realize positioning and clamping of the measuring tool and a measured workpiece, and improves the measuring efficiency of the inner diameter of the deep hole.
2. The electric inner diameter measuring tool for the variable-diameter deep hole detection adopts the beveling disc and the high-precision magnetic ruler, converts the radial detection quantity of the deep hole into the axial detection quantity, is beneficial to reducing the radial size of the electric inner diameter measuring tool, and also ensures the detection precision of the aperture.
3. The electric inner diameter measuring tool for the variable diameter deep hole detection utilizes the contact force between the pressure sensor sensing measuring head and the hole wall to control the rotation of the motor I, and effectively ensures the movement sensitivity of the measuring head.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a positioning connection module according to the present invention;
FIG. 3 is a schematic diagram of a T-turn table according to the present invention;
FIG. 4 is a schematic view of a structure of a fixing plate according to the present invention;
FIG. 5 is a schematic view of a Z-shaped jaw and radial slider mounting structure of the present invention;
FIG. 6 is a schematic diagram of a measurement display module according to the present invention;
FIG. 7 is a cross-sectional view of a measurement display module;
FIG. 8 is a schematic diagram of a T-shaped turntable according to the present invention;
FIG. 9 is a schematic view of a second structure of the fixing plate of the present invention;
FIG. 10 is a schematic diagram of a motion transfer module according to the present invention;
FIG. 11 is a schematic structural diagram of an embodiment of the present invention when used for measurement.
Detailed Description
In order to make the contents of the present invention more comprehensible, embodiments accompanied with figures are further described below.
The left end, the rear end and the like in the embodiment are only positioned at the left side and the right side of the structure shown in the drawing when the reader faces the drawing, so that the position connection relationship is conveniently described in detail according to the drawing, and the use mode of the structure of the invention and the structure of the invention are not limited.
As shown in fig. 1 and 11, the variable-diameter deep hole inner diameter measuring tool comprises a positioning connection module 100 for connecting a measured workpiece 2, a measurement display module 200 capable of being placed in a deep hole of the measured workpiece 2, and a motion transmission module 300 for carrying the measurement display module 200, wherein the motion transmission module 300 is respectively interconnected with the positioning connection module 100 and the measurement display module 200.
As shown in fig. 2, the positioning connection module 100 comprises a T-shaped hollow shaft one 101, a positioning frustum 102, a supporting flat disk one 103, a fixed disk one 104, a T-shaped rotary disk one 105 and a Z-shaped claw 106, wherein two uniformly distributed threaded through holes 102-1 are formed in the small end face of the positioning frustum 102, a guide hole 102-2 is formed in the center of the small end face of the positioning frustum, the guide hole is sleeved on the outer circle of the thin end of the T-shaped hollow shaft one, the supporting flat disk one 103 is fixedly connected to the right end of the T-shaped hollow shaft one 101, and the left end face of the supporting flat disk one is connected with the fixed disk one 104 by adopting 4 uniformly distributed connecting rods 107.
As shown in fig. 4, the first fixing disc 104 is sleeved on the outer circle of the thin end of the first T-shaped hollow shaft 101 through the second central through hole 104-1, the left end face of the first fixing disc is uniformly provided with the first radial T-shaped sliding grooves 104-2, the first radial sliding grooves 108 are internally provided with the first radial sliding blocks 108, the first radial sliding blocks 108 are fixedly connected with the first supporting shafts 109, the first supporting shafts 109 penetrate through the first bearings 110 positioned in the first kidney-shaped grooves 105-2 and are connected with the power input ends of the Z-shaped clamping jaws 106, and the clamping directions of the Z-shaped clamping jaws are along the radial direction of the first fixing disc 104, as shown in fig. 5.
As shown in FIG. 3, a central through hole 105-1 is formed in a T-shaped rotary table 105, a waist-shaped groove 105-2 is formed in a thick end disc surface of the T-shaped rotary table, two ends of the waist-shaped groove are distributed on two circles with different diameters, the width and depth of the waist-shaped groove 105-2 are respectively equal to the diameter and the height of a bearing 110, the thin end of the T-shaped rotary table 105 passes through the central through hole 104-1 and is connected with the output end of a hollow motor 111, and the hollow motor 111 is sleeved on the outer circle of the thin end of the T-shaped hollow shaft.
As shown in fig. 6, fig. 7, fig. 8 and fig. 9, the measurement display module 200 comprises a cup-shaped cylinder 201, a second fixed disk 203, a second T-shaped turntable 204, a first motor 207, a bevel-cutting disc 212, a magnetic scale 210, a measuring head seat 213, a measuring head 214 and a digital display meter 218, wherein the opening of the cup-shaped cylinder 201 is leftwards, a protective cover 202 is arranged at the opening, a central hole for a lead is arranged at the bottom of the cup-shaped cylinder 201, the second fixed disk 203 fixedly connected to the inner wall of the left end of the cup-shaped cylinder 201 is circumferentially distributed with three radial second T-shaped sliding grooves 203-2, the center is also provided with a third through hole 203-1, the right end of the T-shaped turntable 204 passing through the third through hole 203-1 from left to right and a bearing 205 is connected with an output shaft of the first motor 207, three waist-shaped grooves 204-1 are circumferentially uniformly distributed on the thick end face of the second T-shaped turntable 204, the first motor 207 and the encoder 208 are connected with the inner wall of the cup-shaped cylinder 201 through the first fixed support 209, the disc 212 sleeved on the outer circle of the thin end of the second T-shaped turntable 204 is positioned between the second fixed disk 203 and the fixed support 209, the tilt angle of the right end face of the magnetic scale 210 is designed according to the detection precision of the inner diameter, the magnetic scale of the bevel-cutting disc is fixed to the right end face of the magnetic scale 212.
The T-shaped sliding groove II 203-2 is internally provided with a radial sliding block II 215, one end of a supporting shaft II 216 is fixedly connected to the radial sliding block II, the other end of the supporting shaft II 216 penetrates through a bearing II 217 arranged in the kidney-shaped groove II 204-1 and is connected with a measuring head seat 213, the measuring head seat 213 is connected with a measuring head 214 through threads, the measuring head is arranged along the radial direction of the T-shaped turntable II, a pressure sensor is arranged between the measuring head and the measuring head seat, the height of the measuring head from the center of the T-shaped turntable II is larger than the radius of the T-shaped turntable II, and the measuring head extends out of a through hole formed in the cup-shaped cylinder.
As shown in fig. 1 and 10, the motion transmission module 300 comprises a T-shaped hollow shaft II 301, a sleeve shaft 302, a support flat disc II 303, a feed screw 304, a motor II 305, a motor III 306, a driving gear 307 and a driven gear 308, wherein the large end of the T-shaped hollow shaft II 301 is fixedly connected with the right end surface of the cup-shaped sleeve 201, the large end of the T-shaped hollow shaft II is inserted into an inner hole of the sleeve shaft 302 through rolling bearings at two ends, the right end of the sleeve shaft 302 is fixedly connected with the support flat disc II 303, the right ends of the two feed screws 304 uniformly distributed on the end surface of the support flat disc II 303 are connected with the motor II 305, the left end of the feed screw can rotate through the support flat disc II 303 and is inserted into a threaded through hole 102-1, the motor II 305 is mounted on the right end surface of the support flat disc II 303, the motor III 306 is mounted on the left end surface of the support flat disc II, the output shaft of the motor III (306) can rotate through the support flat disc II 303 to be connected with the driving gear 307, and the driving gear 307 is meshed with the driven gear 308 mounted on the right end of the T-shaped hollow shaft II 301.
In addition, the digital display meter 218 is mounted on the second supporting plate 303 through a meter frame 219 and is connected with the magnetic ruler 210 through a signal wire, the digital display meter 218, the hollow motor 111, the first motor 207, the second motor 305 and the third motor 306 are all connected with the control module 220 and the power module 221, and the control module 220 and the power module 221 are mounted on the first fixing support 209.
The working principle of the diameter-variable deep hole inner diameter measuring tool is as follows:
1) Before measurement, firstly, a proper measuring head 214 is selected according to the size of the inner diameter of a variable-diameter deep hole of a measured workpiece, and is connected with a measuring head seat 213 through a pressure sensor thread, so that the calibration work of the electric inner diameter measuring tool is completed, and the specific implementation steps are as follows:
a) Controlling a motor I208, driving a T-shaped rotary table II 204 to rotate around a fixed disk II 203, driving a measuring head 214 and a measuring head seat 213 to move to the innermost side along the radial direction of the fixed disk II 203 under the constraint of a T-shaped sliding groove II 203-2 and a kidney-shaped groove II 204-1 together by a radial sliding block II 215, a supporting shaft II 216 and a bearing II 217, measuring the minimum aperture value phi min corresponding to the three measuring heads 214 at the moment by an auxiliary measuring tool and a pressure sensor, and simultaneously displaying a measured value L 1 of a magnetic ruler 210 at the moment by a digital display meter;
b) Controlling a motor I208, driving a T-shaped rotary table II 204 to rotate around a fixed disk II 203, driving a measuring head 214 and a measuring head seat 213 to move to the outermost side along the radial direction of the fixed disk II 203 under the common constraint of a T-shaped sliding groove II 203-2 and a kidney-shaped groove II 204-1 by a radial sliding block II 215, a supporting shaft II 216 and a bearing II 217, measuring the maximum aperture value phi max corresponding to the three measuring heads 214 at the moment by an auxiliary measuring tool and a pressure sensor, and displaying a measured value L 2 of a magnetic ruler 210 at the moment by a digital display meter;
c) The first motor 208 is controlled, and the second bearing 217 is located at a certain middle position of the second kidney-shaped groove 204-1 through the second fixed disk 203, the second T-shaped turntable 204, the second radial sliding block 215 and the second supporting shaft 216, and the measured diameter of the measuring head 214 can be calculated according to the instantaneous measured value L of the magnetic scale 210 displayed by the digital display meter and phi min、Φmax、L1、L2.
2) During measurement, as shown in fig. 11, the positioning connection module 100 supports the measurement display module 200 and the motion transmission module 300, the motion transmission module 300 carries the measurement display module 200 to the position to be measured of the deep hole of the workpiece 2, and the measurement display module 200 completes measurement and display of the inner diameter of the position to be measured of the deep hole, and the specific implementation steps are as follows:
a) Placing the positioning connection module 100 on the end face of a deep hole of the tested workpiece 2, starting a hollow motor 111, and driving three Z-shaped clamping claws 106 to clamp the outer surface of the tested workpiece 2 through a first fixed disk 104, a first T-shaped rotary disk 105, a first radial sliding block 108, a first supporting shaft 109 and a first supporting shaft 109;
b) Under the support of the positioning connection module 100, a second motor 305 is started, and the feeding screw 304 drives the measurement display module 200 to operate to the position to be measured of the deep hole inner diameter of the measured workpiece 2;
c) According to the measured value of the pressure sensor, if the measured value is equal to the set value, the motor I208 is kept still, if the measured value is smaller than the set value, the motor I208 is started to rotate positively, otherwise, the motor I208 rotates reversely, the measuring head 214 is driven to move to the corresponding position through the fixed disk II 203, the T-shaped rotary disk II 204, the radial sliding block II 215 and the supporting shaft II 216, the instantaneous measured value L of the magnetic ruler 210 displayed by the digital display meter at the moment is recorded, and the diameter size of the inner hole of the measuring position can be calculated by combining with phi min、Φmax、L1、L2.
D) If the inner diameters of holes at different positions on the same section are required to be measured, the motor III 306 is started, the measurement display module 200 is driven to rotate to the corresponding measurement position in the current section through the driving gear 307, the driven gear 308 and the T-shaped hollow shaft II 301, and then the aperture measurement work is completed according to the step c).
The above description is only one preferred embodiment of the electric inner diameter gauge for variable diameter deep hole detection according to the present invention, but the scope of the present invention is not limited to this example.
Claims (2)
1. The measuring tool for the inner diameter of the variable-diameter deep hole is characterized by comprising a positioning connection module (100) for connecting a measured workpiece (2), a measurement display module (200) capable of being placed in the deep hole of the measured workpiece (2), and a motion transmission module (300) for carrying the measurement display module (200), wherein the motion transmission module (300) is respectively interconnected with the positioning connection module (100) and the measurement display module (200);
The positioning connection module (100) comprises a T-shaped hollow shaft I (101), a positioning taper table (102), a supporting flat disc I (103), a fixed disc I (104), a T-shaped rotary disc I (105), a digital display meter (218) and a Z-shaped claw (106), wherein the positioning taper table (102) is sleeved on one end of the T-shaped hollow shaft I (101), two uniformly distributed threaded through holes (102-1) are arranged on the small end face of the positioning taper table (102), a guide hole (102-2) is formed in the center of the small end face of the positioning taper table (102), the guide hole (102-2) is sleeved on the T-shaped hollow shaft I (101), the supporting flat disc I (103) is fixedly connected to the other end of the T-shaped hollow shaft I (101), the supporting flat disc I (103) is fixedly connected with the fixed disc I (104) through a connecting rod (107), the fixed disc I (104) is sleeved on the outer circle of the thin end of the T-shaped hollow shaft I (101) through a center through hole II (104-1), a radial slide groove I (102-2) is formed in the end face of the fixed disc I (104) close to the positioning taper table, a radial slide groove I (108) is formed in the T-shaped hollow shaft I (108), a radial slide groove I (108) is fixedly connected to the T-shaped hollow shaft I (108), a waist-shaped groove I (105-2) is formed in the thick end disc surface of the T-shaped rotary disc I (105), two ends of the waist-shaped groove I (105-2) are distributed on two circles with different diameters, the thin end of the T-shaped rotary disc I (105) passes through a center through hole II (104-1) to be connected with the output end of a hollow motor (111), the hollow motor (111) is sleeved on the outer circle of the thin end of a T-shaped hollow shaft I (101), the other end of a supporting shaft I (109) passes through a bearing I (110) positioned in the waist-shaped groove I (105-2) to be connected with the power input end of a Z-shaped claw (106), and the clamping direction of the Z-shaped claw (106) is along the radial direction of the fixed disc I (104);
The measuring and displaying module (200) comprises a cup-shaped barrel (201), a second fixing disc (203), a first T-shaped rotary disc (204), a motor (207), a beveling disc (212), a magnetic ruler (210), a measuring head seat (213), a measuring head (214) and a digital display meter (218), wherein a protective cover (202) is arranged at an opening of the cup-shaped barrel (201), a central hole for a lead is formed in the bottom of the cup-shaped barrel (201), the second fixing disc (203) is fixedly connected to the inner wall of the cup-shaped barrel (201) close to the opening, a radial T-shaped sliding groove (203-2) is formed in the circumference of the second fixing disc (203), a through hole (203-1) is formed in the center of the second fixing disc (203), the thin end of the second T-shaped rotary disc (204) penetrates through the through hole (203-1) to be connected with the motor (207), a waist-shaped groove (204-1) is formed in the end face of the thick end of the second T-shaped rotary disc (204), the motor (207) and an encoder (208) are connected with the inner wall of the cup-shaped barrel (201) through a fixing bracket (209), the beveling disc (212) is fixedly connected to the inner wall of the cup-shaped barrel (201), the beveling disc (203) is sleeved on the thin end close to the first T-shaped rotary disc (203) and is positioned on the thin end of the first rotary disc (203) close to the magnetic ruler (209), the magnetic ruler (210) is fixed on the second fixed disk (203) through the second fixed bracket (211);
A radial sliding block II (215) is arranged in the T-shaped sliding groove II (203-2), one end of a supporting shaft II (216) is fixedly connected to the radial sliding block II (215), the other end of the supporting shaft II (216) passes through a bearing II (217) arranged in the kidney-shaped groove II (204-1) and is connected with a measuring head seat (213), the measuring head seat (213) is connected with a measuring head (214) through threads, the measuring head (214) is arranged along the radial direction of the T-shaped turntable II (204), a pressure sensor is arranged between the measuring head (214) and the measuring head seat (213), the height of the measuring head (214) from the center of the T-shaped turntable II (204) is larger than the radius of the T-shaped turntable II (204), and the measuring head (214) extends out of a through hole formed in the cup-shaped cylinder (201);
The motion transmission module (300) comprises a T-shaped hollow shaft II (301), a sleeve shaft (302), a supporting flat disc II (303), a feed screw rod (304), a motor II (305), a motor III (306), a driving gear (307) and a driven gear (308), wherein the large end of the T-shaped hollow shaft II (301) is fixedly connected with the bottom of a cup-shaped cylinder body (201), a positioning flat disc (102) is sleeved on the T-shaped hollow shaft II (301), the small end surface of the positioning flat disc (102) is not contacted with the large end of the T-shaped hollow shaft II (301), the sleeve shaft (302) is sleeved on the T-shaped hollow shaft II (301) through rolling bearings at two ends, one end of the sleeve shaft (302) is sleeved in a guide hole (102-2) of the positioning flat disc II (102), the supporting flat disc II (303) is fixedly connected with the other end of the sleeve shaft (302), one end of the feed screw rod (304) penetrates through a threaded through hole (102-1), the other end of the feed screw rod (304) can rotationally penetrate through the supporting flat disc II (303) to be connected with the large end of the motor II (305), the motor II (305) is mounted on the end surface of the other end surface (305) of the sleeve shaft II (305) and the other end surface (306) is mounted on the end surface (303) of the screw rod II) and the screw rod (306) and the other end surface (306) is fixedly connected with the end surface, the output shaft of the motor III (306) can rotate to pass through the support flat plate II (303) to be connected with a driving gear (307), the driving gear (307) is meshed with a driven gear (308) arranged at the other end of the T-shaped hollow shaft II (301), the digital display meter (218) is arranged on the support flat plate II (303) through a meter frame (219) and is connected with the magnetic scale (210) through a signal wire, the digital display meter (218), the hollow motor (111), the motor I (207), the motor II (305) and the motor III (306) are connected with the control module (220) and the power module (221), and the control module (220) and the power module (221) are arranged on the fixed bracket I (209);
the width and the depth of the first kidney-shaped groove (105-2) are respectively equal to the diameter and the height of the first bearing (110);
the number of the feed screw rods (304) is two;
and a bearing III (205) is arranged between the second fixed disc (203) and the thin end of the second T-shaped rotary disc (204).
2. The tool of claim 1, wherein the number of T-shaped sliding grooves I (104-2), the number of waist-shaped grooves I (105-2), the number of waist-shaped grooves II (204-1) and the number of T-shaped sliding grooves II (203-2) are three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811634100.4A CN109506559B (en) | 2018-12-29 | 2018-12-29 | A variable diameter deep hole inner diameter measuring tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634100.4A CN109506559B (en) | 2018-12-29 | 2018-12-29 | A variable diameter deep hole inner diameter measuring tool |
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| CN109506559A CN109506559A (en) | 2019-03-22 |
| CN109506559B true CN109506559B (en) | 2025-03-07 |
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| CN113376647B (en) * | 2021-06-08 | 2024-04-26 | 东北大学 | Blast hole measurement auxiliary equipment and application method thereof |
| CN118463775B (en) * | 2024-07-10 | 2024-10-29 | 中铁二十一局集团轨道交通工程有限公司 | Tunnel rock blast hole depth measuring device and measuring method |
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