CN210512920U - Measuring tool for measuring size of inner ring type slotted hole - Google Patents

Measuring tool for measuring size of inner ring type slotted hole Download PDF

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Publication number
CN210512920U
CN210512920U CN201921568243.XU CN201921568243U CN210512920U CN 210512920 U CN210512920 U CN 210512920U CN 201921568243 U CN201921568243 U CN 201921568243U CN 210512920 U CN210512920 U CN 210512920U
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measuring
rod
jaw
gauge
fixed
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CN201921568243.XU
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Chinese (zh)
Inventor
刘勇
朱腾飞
李建龙
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Lanzhou Wanli Aviation Electromechanical Co ltd
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Lanzhou Wanli Aviation Electromechanical Co ltd
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Abstract

The utility model discloses a measuring tool for measuring the size of an inner ring groove hole, which comprises a fixed measuring jaw, a movable measuring jaw and a measuring rod, wherein when the depth E of the ring groove is measured, the fixed measuring jaw is fixed at one end of the measuring rod, the main body of the fixed measuring jaw extends along the direction vertical to the measuring rod, and the fixed measuring jaw and the movable measuring jaw jointly use to measure the depth E; the movable measuring claw can reciprocate on the measuring rod and can be fixed on the measuring rod, scale marks are arranged on the same side surface of the movable measuring claw and the measuring rod, the movable measuring claw is matched with the scale marks of the measuring rod to read the size, and the measuring rod is matched with the movable measuring claw to measure the distance L from the annular groove to the end face and the width B of the annular groove. The measuring tool has various functions and can realize the measurement of a plurality of different sizes of the annular groove; the volume is small, the use is convenient and simple, and the popularization is easy; the manufacturing cost is low, and the manufacturing is simple.

Description

Measuring tool for measuring size of inner ring type slotted hole
Technical Field
The utility model belongs to the technical field of measure, concretely relates to measuring tool for measuring interior ring type slotted hole size.
Background
In the machining industry, it is often the case that a ring groove (as shown in fig. 1) is machined in a workpiece, the ring groove being used for mounting a seal ring, a circlip or other purposes. For the annular groove, it is usually necessary to detect the distance L from the annular groove to the end face, the width B of the annular groove, and the depth E of the annular groove, but it is difficult to measure the annular groove located on the inner surface of the part.
The existing measurement methods comprise the following steps: the method comprises the steps that firstly, a three-coordinate measuring instrument is adopted for measurement, a star-shaped measuring needle or a disc-shaped measuring needle is adopted for sampling point measurement of the depth of the annular groove, the measurement precision is high, a special measuring head is required to be used, the time for replacing the measuring head and the measurement time are long, workers need to transfer a workpiece to a three-coordinate measuring chamber each time, time and labor are wasted, and the depth E of the annular groove can only be measured under the condition that the measuring head is not replaced; the second method is that the part to be measured is cut along the axial direction of the groove and then is measured by a caliper, the method can measure the distance L from the annular groove to the end face, the width B of the annular groove and the depth E of the annular groove, but the part needs to be damaged, and usually only one part is measured by one batch of parts, so that the cost is high and the reliability is poor; and the third method is to measure the distance L from the annular groove to the end surface, the width B of the annular groove and the depth E of the annular groove by using different measuring tools.
Therefore, a measuring method which is simple, convenient and accurate in measurement is urgently needed for measuring the distance L from the annular groove to the end face, the width B of the annular groove and the depth E of the annular groove.
SUMMERY OF THE UTILITY MODEL
Purpose of the utility model
In order to solve the technical problems in the background art, a measuring tool and a measuring method for measuring the size of an inner annular groove hole are provided, and the measuring tool and the measuring method can conveniently measure the distance L from an annular groove to an end face, the width B of the annular groove and the depth E of the annular groove.
Technical solution of utility model
A measuring tool for measuring the size of an inner annular groove hole comprises a fixed measuring jaw, a movable measuring jaw and a measuring rod, wherein when the depth E of an annular groove is measured, the fixed measuring jaw is fixed at one end of the measuring rod, a main body of the fixed measuring jaw extends in the direction perpendicular to the measuring rod, and the fixed measuring jaw and the movable measuring jaw jointly use to measure the depth E; the movable measuring claw can reciprocate on the measuring rod and can be fixed on the measuring rod, scale marks are arranged on the same side surface of the movable measuring claw and the measuring rod, the movable measuring claw is matched with the scale marks of the measuring rod to read the size, and the measuring rod is matched with the movable measuring claw to measure the distance L from the annular groove to the end face and the width B of the annular groove.
Preferably, the tail end of the main body of the fixed measuring claw is provided with a first measuring head, the first measuring head protrudes out of the side face of the main body, and the main body of the fixed measuring claw is in clearance fit with the measuring rod through the mounting hole.
Preferably, the contact surface of the first measuring head and the annular groove is in a circular arc shape.
Preferably, the movable measuring claw comprises a measuring body, one end of the measuring body is provided with a connecting portion which is in the same direction as the main body of the fixed measuring claw, a second measuring head is arranged at a position, corresponding to the first measuring head, on the connecting portion, the second measuring head protrudes out of the side face of the connecting portion and is opposite to the first measuring head, the side face of the main body of the fixed measuring claw is tightly attached to the side face of the connecting portion of the movable measuring claw, the measuring body is provided with a first threaded hole and a second threaded hole, the first threaded hole is matched with a screw, the screw is inserted into a hole in the sliding block, the sliding block moves.
Preferably, the upper surface and the lower surface of the measuring body are uneven so that a user can conveniently stir the movable measuring claw to measure.
Preferably, one end of the measuring rod is provided with a third measuring head, the third measuring head protrudes out of the side surface of the measuring body of the measuring rod, and the distance C1 between the end surface of the three tail ends of the measuring head and the side surface of the measuring body of the measuring rod opposite to the side where the third measuring head is located is larger than the width C2 of the measuring body of the measuring rod.
Preferably, the measuring device further comprises a plurality of gauges with different specifications, and the gauges are rotatably connected to the other end of the measuring rod.
Preferably, the gauges of each gauge include a passing gauge and a stopping gauge.
Preferably, the sliding block is made of wear-resistant material, such as ZCuSn10Pb 5.
The advantages of the utility model
The utility model has the advantages that:
1. the functions are various, and the measurement of a plurality of different sizes of the annular groove can be realized;
2. the volume is small, the use is convenient and simple, and the popularization is easy;
3. the manufacturing cost is low, and the manufacturing is simple.
Drawings
FIG. 1 is a schematic view of a ring groove structure.
Fig. 2 is a front view of the measuring tool for measuring the size of the inner circular groove hole of the present invention.
Fig. 3 is a top view of the measuring tool for measuring the size of the inner circular slot according to the present invention.
Fig. 4 is a front view of the fixing jaw.
FIG. 5 is a side view of the retainer pawl
Fig. 6 is a front view of the moving jaw.
Fig. 7 is a left side view of the moving jaw.
Fig. 8 is a top view of the moving jaw.
Fig. 9 is a schematic view of a measuring rod structure.
Fig. 10 is a schematic diagram of a gauge structure.
FIG. 11 is a schematic view of annular groove depth measurement.
FIG. 12 is a schematic view of annular groove width measurement.
In the drawings: 1-slide block, 2-fixed measuring jaw, 3-movable measuring jaw, 4-set screw, 5-measuring rod, 6-pin shaft, 7-gauge, 8-screw, 9-fixed screw, 10-measuring head I, 11-mounting hole, 12-threaded hole, 13-measuring head II, 14-body measuring, 15-measuring plane, 16-threaded hole I, 17-threaded hole II, 18-side head III, 19-through hole and 20-measuring head IV.
Detailed Description
A measuring tool for measuring the size of an inner ring groove hole comprises a fixed measuring claw 2, a movable measuring claw 3, a measuring rod 5 and a gauge 7, wherein the fixed measuring claw 2 is fixed at one end of the measuring rod 5 when measuring the depth E of an annular groove, the fixed measuring claw and the movable measuring claw 3 measure the depth E together, and the fixed measuring claw 2 is taken down when measuring the distance L from the annular groove to the end face and the width B of the annular groove; the movable measuring claw 3 can reciprocate on the measuring rod 5, and the end face of the movable measuring claw is provided with scale marks which are matched with the scale marks on the measuring rod 5, so that the measuring precision of 0.02mm is realized. The measuring rod 5 is matched with the movable measuring claw 3 to measure the distance L from the annular groove to the end face and the width B of the annular groove; the gauge 7 is used for measuring the width B of some common annular grooves, and each gauge is divided into an over end gauge and a stop end gauge and is arranged at one end of the measuring rod 5.
The structure of the fixed measuring jaw 2 can be as shown in fig. 4 and 5, and is provided with a first measuring head 10, a mounting hole 11 and a threaded hole 12, wherein the first measuring head 10 is positioned at the tail end of the main body of the fixed measuring jaw 2, the first measuring head 10 protrudes out of the side surface of the main body of the fixed measuring jaw 2, so that the first measuring head can conveniently go deep into an annular groove to measure the depth E, and the end surface structure of the tail end is arc-shaped and is in line contact with the annular groove, so that the measurement is accurate; the fixed measuring claw 2 is in clearance fit with the measuring rod 5 through a mounting hole 11 on the main body, so that the fixed measuring claw 2 is convenient to assemble and disassemble; the fixed measuring jaw 2 is matched with the screw 9 through a threaded hole 12 on the main body to fix the fixed measuring jaw 2 on the measuring rod 5.
The structure of the movable measuring claw 3 can be as shown in fig. 6-8, the movable measuring claw 3 is T-shaped and comprises a second measuring head 13, a first measuring body 14, a measuring plane 15, a first threaded hole 16 and a second threaded hole 17, one end of the first measuring body 14 is provided with a connecting part in the same direction as the main body of the fixed measuring claw 2, the tail end of the connecting part is provided with the second measuring head 13, the second measuring head 13 protrudes out of the side surface of the connecting part and is opposite to the first measuring head 10, the upper surface and the lower surface of the second measuring head 13 are respectively positioned on the same horizontal plane with the upper surface and the lower surface of the first measuring head 10, and when the side surface of the main body of the fixed measuring claw 2 is tightly attached0The two are matched to realize the measurement of the depth E of the annular groove; the body 14 of the movable measuring claw 3 is matched with the measuring rod 5, the body 14 can reciprocate on the measuring rod 5, scales are arranged on the body 14 and matched with the scales on the measuring rod 5 to realize measurement, and the upper surface and the lower surface of the body 14 are uneven, so that a user can conveniently stir the movable measuring claw 3 to measure; the first threaded hole 16 and the second threaded hole 17 are located on the upper surface of the body 14, the first threaded hole 16 is used for being matched with the screw 8, the screw 8 is inserted into a hole in the sliding block 1 located in the body 14, the sliding block 1 moves synchronously when the movable measuring claw 3 moves, the second threaded hole 17 is used for being matched with the fastening screw 4, and the first threaded hole and the second threaded hole are screwed during measurementThe measuring tool is taken down from the part after the set screw 4 is tightened, so that the phenomenon that the reading is wrong due to the moving position of the movable measuring claw 3 is prevented. The side of the connecting part which can be attached to the side face of the body of the fixed measuring claw 2 is flush with the end face of the measuring body 14 to form a measuring plane 15.
The measuring rod 5 can be structured as shown in fig. 9, one end of the measuring rod is provided with a measuring head three 18, the measuring head three 18 protrudes out of the side surface of the measuring rod 5, the other end of the measuring rod is provided with a through hole 19, and the thickness of the measuring head three 18 is L2(distance between the outer side face and the inner side face of the measuring head III 18), the distance C1 between the end face of the tail end of the measuring head III 18 and the measuring side face of the measuring rod 5 opposite to the side where the measuring head III 18 is located is larger than the width C2 of the measuring rod 5, when the distance L between the annular groove and the end face and the width B of the annular groove are measured, the measuring head III can extend into the annular groove to be measured under the condition that the measuring rod 5 does not interfere with the hole wall, and the through hole 19 is used for installing the gauge 7.
The measuring tool can also comprise a gauge 7, the structure of which is shown in fig. 10, one end of the gauge is provided with a measuring head four 20, the other end of the gauge is provided with a through hole, the measuring head four 20 protrudes out of the side surface of the gauge, and the measuring head four 20 is used for measuring the width B of the annular groove; the through hole is used for fixing the gauge 7 on the measuring rod 5 through the pin shaft 6, the gauge 7 can rotate around the pin shaft 6 and is neatly arranged on the measuring rod 5 when not used, and only one of the gauges is selected when the gauge is used. The gauge 7 is used for measuring the width B of a plurality of common annular grooves, each specification is divided into an over-end gauge and a stop-end gauge, and specification sizes are respectively engraved at specification marks on the gauge 7 for convenient selection.
The measuring method is carried out according to the following steps:
(1) when measuring the depth E of the annular groove, the measurement schematic diagram is shown in fig. 11, and first, a reading D is recorded when the side surface of the main body of the fixed measuring claw 2 is closely attached to the side surface of the connecting portion of the movable measuring claw 31Moving the measuring tool to make the end surfaces of the first measuring head 10 and the second measuring head 13 fit with the hole wall, and recording the reading D2(ii) a Continuously moving the measuring tool to enable the end surfaces of the tail ends of the first measuring head 10 and the second measuring head 13 to be attached to the groove wall, and recording a reading D3And then:
diameter D ═ D of the hole2-D1+D0
Diameter D ═ D of groove3-D1+D0
Depth of the ring groove is equal to (D-D)/2 equal to (D)3-D2)/2
(2) When the width B of the annular groove is measured, the fixed measuring claw 2 is taken down, the measuring schematic diagram is shown in figure 12, the measuring plane 15 of the movable measuring claw 3 is attached to the end face of the measured annular groove, the end of the measuring rod 5 with the measuring head III 18 extends into the annular groove, the outer side face of the measuring head III 18 is in contact with the bottom of the annular groove, and the reading is recorded as A1That is, the distance L1 from the bottom to the end face of the annular groove, then the measuring rod 5 is moved upwards to make the inner side face of the measuring head III 18 contact with the top of the annular groove, and the reading is recorded as A2And then:
the distance L1 from the bottom to the end face of the annular groove is A1
The distance L between the annular groove and the end face is A2-L2(L2Thickness of the measuring head three 18, as shown in FIG. 10)
Annular groove width B (L1-L (A))1-A2+L2
After the measurement is finished, the measured value can be compared with the standard value to obtain whether the part is qualified or not.
(3) The gauge 7 is used for detecting whether the width B of some common annular grooves is qualified or not, a measuring head four 20 is inserted into the annular groove during measurement, the width B of the annular groove is qualified when the over-end gauge can enter the annular groove and the end-stop gauge cannot enter the annular groove, and the annular groove is unqualified under other conditions.

Claims (10)

1. A measuring tool for measuring the size of an inner annular slotted hole is characterized by comprising a fixed measuring jaw (2), a movable measuring jaw (3) and a measuring rod (5), wherein when the depth E of an annular groove is measured, the fixed measuring jaw (2) is fixed at one end of the measuring rod (5), the main body of the fixed measuring jaw (2) extends in the direction vertical to the measuring rod (5), and the fixed measuring jaw (2) and the movable measuring jaw (3) jointly use to measure the depth E; the movable measuring claw (3) can reciprocate on the measuring rod (5) and can be fixed on the measuring rod (5), scale marks are arranged on the surfaces of the movable measuring claw (3) and the measuring rod (5) on the same side, the scale marks of the movable measuring claw (3) and the measuring rod (5) are matched to read the size, and the measuring rod (5) and the movable measuring claw (3) are matched to measure the distance L from the annular groove to the end face and the width B of the annular groove.
2. A gauge for measuring the size of an inner annular slotted hole according to claim 1, wherein the tail end of the main body of the fixed measuring jaw (2) is provided with a measuring head I (10), the measuring head I (10) protrudes out of the side surface of the main body, and the main body of the fixed measuring jaw (2) is in clearance fit with the measuring rod (5) through the mounting hole (11).
3. The measuring tool for measuring the size of the inner annular groove hole as claimed in claim 2, wherein the contact surface of the first measuring head (10) and the annular groove is in a circular arc shape.
4. The measuring tool for measuring the size of the inner ring groove hole is characterized in that the movable measuring jaw (3) comprises a measuring body (14), one end of the measuring body (14) is provided with a connecting part which is in the same direction with the main body of the fixed measuring jaw (2), a measuring head II (13) is arranged on the connecting part corresponding to the measuring head I (10), the measuring head II (13) protrudes out of the side surface of the connecting part and is opposite to the measuring head I (10), the side surface of the main body of the fixed measuring jaw (2) is tightly attached to the side surface of the connecting part of the movable measuring jaw (3), the measuring body (14) is provided with a threaded hole I (16), and a second threaded hole (17), wherein the first threaded hole (16) is matched with the screw (8), the screw (8) is inserted into a hole in the sliding block (1) in the measuring body (14), so that the sliding block (1) synchronously moves when the movable measuring claw (3) moves, and the second threaded hole (17) is matched with the fastening screw (4).
5. A gauge for measuring the size of an inner annular slotted hole according to claim 4, characterized in that the upper and lower surfaces of the body (14) are uneven to facilitate the user to move the measuring jaw (3) for measurement.
6. A gauge for measuring the size of an inner annular slot hole as claimed in claim 1, wherein the measuring rod (5) has a measuring head three (18) at one end, the measuring head three (18) protrudes out of the side surface of the measuring rod (5) where the measuring head three (18) is located, and the distance C1 between the end surface of the measuring head three (18) and the side surface of the measuring rod (5) where the measuring head three (18) is located is greater than the width C2 of the measuring rod (5) where the measuring head three (18) is located.
7. A gauge for measuring the size of an inner annular slot as claimed in claim 1, further comprising a plurality of gauges (7) of different specifications, the gauges (7) being rotatably connected to the other end of the measuring rod (5).
8. A gauge for measuring the size of an inner annular slot as claimed in claim 1, wherein each gauge (7) comprises an over end gauge and an end stop gauge.
9. A gauge for measuring the size of an inner annular slot hole according to claim 7, wherein the gauge (7) is provided with a measuring head four (20) at one end and a through hole at the other end, and the measuring head four (20) is used for measuring the width B of the annular slot; the through hole is used for fixing the gauge (7) on the measuring rod (5) through the pin shaft (6), and the gauge (7) can rotate around the pin shaft (6).
10. A gauge for measuring the dimensions of an internal annular slot according to claim 4, characterized in that the slide (1) is made of a wear-resistant material.
CN201921568243.XU 2019-09-20 2019-09-20 Measuring tool for measuring size of inner ring type slotted hole Active CN210512920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921568243.XU CN210512920U (en) 2019-09-20 2019-09-20 Measuring tool for measuring size of inner ring type slotted hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921568243.XU CN210512920U (en) 2019-09-20 2019-09-20 Measuring tool for measuring size of inner ring type slotted hole

Publications (1)

Publication Number Publication Date
CN210512920U true CN210512920U (en) 2020-05-12

Family

ID=70570816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921568243.XU Active CN210512920U (en) 2019-09-20 2019-09-20 Measuring tool for measuring size of inner ring type slotted hole

Country Status (1)

Country Link
CN (1) CN210512920U (en)

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