CN109000544B - Hole center distance measuring device for vertically intersected holes - Google Patents

Abstract

The invention belongs to the technical field of mechanical measuring devices, and in particular relates to a hole-to-center distance measuring device for vertically intersecting holes, comprising a base, a measuring ruler and a measuring head. A support cross bar is arranged on the support bar, and a measuring frame sliding along the Y-axis direction is arranged on the support cross bar; the hollow rotating platform includes a box body and an output turntable rotatably arranged on the box body, and the rotation center line of the output turntable faces the X-axis direction. The output turntable is provided with a fixture for clamping the workpiece; the measuring ruler is slid on the measuring frame along the Z-axis direction, the measuring ruler is set towards the X-axis direction, and is located between the measuring frame and the clamp; the measuring head is a downwardly retracted cone The measuring head slides along the X-axis direction on the measuring ruler, with the small end facing down. Beneficial effects: The present invention reduces the workload, improves the measurement accuracy and reduces a certain cost, no matter when the workpiece is rotated or the relative position of the hole is measured.

Description

A hole center distance measuring device for vertically intersecting holes

technical field

The invention belongs to the technical field of mechanical measuring devices, and in particular relates to a hole center distance measuring device for vertically intersecting holes.

Background technique

Generally, a part with two vertically intersecting holes has certain accuracy requirements for the hole center distance of the two holes, but since the two vertically intersecting holes are not on the same plane, it is necessary to measure the two vertical The center distance of the intersecting holes has certain difficulties, and there will be large errors in measurement, so it is impossible to accurately grasp the dimensional accuracy of the center holes. At the same time, for some small and medium-sized enterprises who want to measure by some high-precision instruments, it will also bring the trouble of increased cost.

SUMMARY OF THE INVENTION

In order to solve the problems of difficulty in measuring the center-to-center distance of vertically intersecting holes and large measurement errors in the prior art, the present invention provides a hole-center distance measuring device for vertically intersecting holes.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is as follows, a hole center distance measuring device for vertically intersecting holes, including a base, a measuring ruler and a measuring head, and a measuring bracket and a measuring head are sequentially arranged on the base along the X axis direction. A hollow rotating platform, the measuring support is provided with a support cross bar, and the support cross bar is provided with a measuring frame that slides along the Y-axis direction; the hollow rotating platform includes a box body and an output turntable rotatably arranged on the box body , the rotation center line of the output turntable faces the X-axis direction, and the output turntable is provided with a clamp for clamping the workpiece; the measuring ruler slides along the Z-axis direction and is arranged on the measuring frame, and the measuring ruler faces the X-axis. The measuring head is set in the direction, and is located between the measuring frame and the fixture; the measuring head is a downwardly shrinking cone, the measuring head is slidingly arranged on the measuring ruler along the X-axis direction, and the small end faces downward;

The measuring head is slidably connected to the measuring ruler along the X-axis direction through the measuring head connecting piece, the measuring ruler is engraved with a large scale along the X-axis direction, and the measuring head connecting piece is engraved with a large scale along the X-axis direction. Small scale for scale matching;

The clamp includes a clamp body and an operating rod. The clamp body is fixedly connected to the output turntable. A fixed clamping block and a clamping protrusion extend outward in turn from the side of the clamp body away from the output turntable. The clamp body is on the clamp body. Sliding is provided with a sliding clamping block that moves close to or away from the fixed clamping block, the fixed clamping block, the sliding clamping block and the clamping protrusion are arranged along the direction perpendicular to the X-axis, and the operating rod passes through the clamping protrusion is threaded and connected with the clamping protrusion, and one end of the operating rod is fixedly connected with the sliding clamping block;

There are two vertically intersecting holes on the workpiece to be measured, and the two holes are not in the same plane. When measuring, place the workpiece between the fixed clamping block and the sliding clamping block. At this time, the axes of the two holes are the same as X. The axis direction is vertical, the axis of the first hole is the same as the axis direction of the probe, and then the operating rod is tightened, which drives the sliding clamping block to slide toward the fixed clamping block to clamp the workpiece; then, adjust the position of the probe , insert the small end of the probe into the first hole until the probe matches the first hole. At this time, the axis of the probe coincides with the axis of the first hole. Read, and then observe the reading on the small scale aligned with the large scale, and write down the scale at this time as l ₁ ;

After measuring the position of the first hole, make the probe slide to a safe position, and then operate the hollow rotating platform to make the output turntable drive the fixture and the workpiece to rotate 90 degrees, so that the axis of the second hole is in the direction of the axis of the probe. The same, repeat the steps of measuring the first hole, record the reading of the large scale relative to the probe connector, and then observe the reading on the small scale aligned with the large scale, and write down the scale at this time as l ₂ ; then the two The center-to-center distance of the vertically intersecting holes is: l ₂ -l ₁ .

Preferably, a connecting column extends upward from the big end of the measuring head, the measuring head connecting piece is U-shaped, the connecting column is fixedly connected with the measuring head connecting piece, and X guides are provided on both sides of the measuring ruler The two sides of the measuring head connecting piece are extended inwardly with X guide protruding strips which are matched with the X guide groove. The measuring ruler is located in the groove of the U-shaped measuring ruler connecting piece. When sliding the measuring head connecting piece along the measuring ruler, the measuring head connecting piece drives the measuring head to slide along the measuring ruler. The setting of the X guide protruding strip and the X guide groove, The direction accuracy of the measuring head sliding along the X-axis direction is improved, and the measurement accuracy of the measuring device is improved.

Preferably, the measuring ruler is fixedly provided with a measuring ruler connecting piece, the measuring ruler is slidably arranged on the measuring frame through the measuring ruler connecting piece, and Y guide grooves are opened on both sides of the measuring frame, and the measuring ruler is provided with a Y guide groove. A through hole runs through the connecting piece, the measuring frame passes through the through hole, and both sides of the through hole extend inwardly with Y guide protruding strips matched with the Y guide groove.

Further, a connecting block extends outward from the bottom end of the measuring bracket, the connecting block is fixedly arranged on the base, the number of the measuring bracket is two, and the two measuring brackets are spaced along the Y-axis direction, Both ends of the bracket crossbar are respectively fixed on the top ends of the two measurement brackets. The arrangement of the two measuring brackets improves the stability and reliability of the measuring device.

Further, a control box is provided on the side of the box body away from the output turntable, a boss extends upward on the base, a receiving groove is opened at the top of the boss, and the control box is placed in the receiving groove. , the box body is fixedly connected with the boss. The hollow rotating platform is the prior art. For example, the hollow rotating platform disclosed in Patent No. 201520701416.6 can be selected, and the rotation angle of the output turntable can be set to 90 degree rotation, which improves the measurement accuracy of the measuring device and lowers the cost.

Beneficial effects: The hole center distance measuring device of the vertically intersecting holes of the present invention drives the measuring head to move in the Y-axis direction by sliding the measuring frame, the sliding measuring ruler connecting piece drives the measuring head to move in the Z-axis direction, and the sliding measuring head connecting piece drives the measuring head to move in the Z-axis direction. The probe moves in the X-axis direction, that is, the probe slides in the three-coordinate system, the structure is simple, and the operation is convenient; at the same time, the hollow rotating platform and the fixture in the measuring device of the present invention can turn the part accurately 90 degrees, which is very suitable for The measurement of the center-to-center distance of the vertically intersecting holes is convenient and accurate; whether it is rotating the workpiece or measuring the relative position of the holes, it can reduce the workload and improve the measurement accuracy. To a certain extent, For some small businesses, certain costs can be reduced.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the hole center distance measuring device of the vertical intersecting hole of the present invention;

Fig. 2 is the assembly explosion schematic diagram of the measuring ruler and the measuring head of the hole center distance measuring device of the vertical intersecting hole of the present invention;

Fig. 3 is the assembly explosion schematic diagram of the clamp of the hole center distance measuring device of the vertical intersecting hole of the present invention and the hollow rotating platform;

Fig. 4 is the three-dimensional structure schematic diagram when the hole center distance measuring device of the vertical intersecting hole of the present invention measures the first hole;

5 is a schematic three-dimensional structure diagram of the hole center distance measuring device of the vertically intersecting hole of the present invention when measuring the second hole;

In the figure, 1, base, 1-1, boss, 1-2, receiving groove, 2, measuring ruler, 2-1, X guide groove, 2-2, large scale, 2-3, measuring ruler connector , 2-4, through hole, 2-5, Y guide ridge, 3, probe, 3-1, connecting column, 3-2, probe connector, 3-3, X guide ridge, 3-4 , small scale, 4, measuring bracket, 4-1, connecting block, 5, hollow rotating platform, 5-1, box body, 5-2, output turntable, 5-3, control box, 6, bracket crossbar, 7 , Measuring frame, 7-1, Y guide groove, 8, Fixture, 8-1, Fixture body, 8-2, Operation lever, 8-3, Fixed clamping block, 8-4, Clamping protrusion, 8- 5. Slide clamping block, 9, X screw, 10, Y screw, 11, bracket screw, 12, pin, 13, clamp screw, 14, box screw, 15, workpiece, 15-1, first hole, 15-2, the second hole.

Detailed ways

Example

As shown in Figures 1 to 5, a hole center distance measuring device for vertically intersecting holes includes a base 1, a measuring ruler 2 and a measuring head 3. The base 1 is sequentially provided with a measuring bracket 4 and a hollow rotation along the X-axis direction. Platform 5, the measurement bracket 4 is provided with a bracket cross bar 6, and the bracket cross bar 6 is provided with a measurement frame 7 that slides along the Y-axis direction; the hollow rotating platform 5 includes a box 5-1 and a rotating set The output turntable 5-2 on the box body 5-1, the rotation center line of the output turntable 5-2 faces the X-axis direction, the output turntable 5-2 is provided with a clamp 8 for clamping the workpiece 15, so A control box 5-3 is provided on the side of the box body 5-1 away from the output turntable 5-2, and a boss 1-1 extends upward on the base 1, and a top end of the boss 1-1 is provided with a receiving recess. Slot 1-2, the control box 5-3 is placed in the accommodating groove 1-2, the box 5-1 is fixedly connected to the boss 1-1 through the box screw 14, and the hollow rotating platform 5 is the existing For example, the hollow rotating platform 5 disclosed in the patent number 201520701416.6 can be selected, which can improve the measurement accuracy of the measuring device and at the same time, the cost is low; The ruler 2 is set toward the X-axis direction, and is located between the measuring frame 7 and the fixture 8; the measuring head 3 is a downwardly shrinking cone, and the measuring head 3 is slidingly arranged on the measuring ruler 2 along the X-axis direction, and Small end down.

In order to improve the accuracy of the measuring device, a connecting column 3-1 extends upward from the large end of the measuring head 3, and a U-shaped measuring head connecting piece 3-2 is fixed on the connecting column 3-1. The connecting piece 3-2 is fixedly connected to the connecting column 3-1 through the X screw 9, the X guide grooves 2-1 are provided on both sides of the measuring ruler 2, and the two sides of the measuring head connecting piece 3-2 There is an X guide protruding strip 3-3 that is matched with the X guide groove 2-1; the measuring ruler 2 is fixedly provided with a measuring ruler connecting piece 2-3, and the measuring ruler connecting piece 2-3 is connected to the measuring ruler through the Y screw 10. The ruler 2 is fixedly connected, and the measuring ruler 2 is slidably arranged on the measuring frame 7 through the measuring ruler connecting piece 2-3. The two sides of the measuring frame 7 are provided with Y guide grooves 7-1. A through hole 2-4 runs through 2-3, the measuring frame 7 passes through the through hole 2-4, and both sides of the through hole 2-4 extend inwardly with a Y that is matched with the Y guide groove 7-1. Guide protruding strips 2-5; the measuring ruler 2 is engraved with a large scale 2-2 along the X-axis direction, and the measuring head connector 3-2 is engraved with a large scale 2-2 along the X-axis direction. The minor scales 3-4. After the probe connector 3-2 slides along the measuring ruler 2 for a certain distance and stops, first observe the reading of the probe connector 3-2 relative to the large scale 2-2 of the large scale 2-2, and then observe the small scale 3-4 and the large scale. The small scale 3-4 reading is aligned with the scale 2-2, so as to achieve the purpose of accurate measurement.

In order to make the structure of the measuring device simple and to ensure the stability and reliability of the measuring device, a connecting block 4-1 extends outward from the bottom end of the measuring bracket 4, and the connecting block 4-1 passes through the bracket screw 11. Fixed on the base 1, the number of the measurement brackets 4 is two, the two measurement brackets 4 are spaced apart along the Y-axis direction, and the upper part of the measurement bracket 4 has a cross-bar through hole 2-4 along the Y direction. , the two ends of the bracket cross bar 6 respectively pass through the cross bar through holes 2-4 of the two measurement brackets 4, and are fixed on the measurement bracket 4 by the pins 12; the clamp 8 includes a clamp body 8-1 and an operating rod 8 -2, the clamp body 8-1 and the output turntable 5-2 are fixedly connected by clamp screws 13, and the side of the clamp body 8-1 away from the output turntable 5-2 extends outward in turn with a fixed clamping block 8- 3 and a clamping protrusion 8-4, the clamp body 8-1 is slidably provided with a sliding clamping block 8-5 that moves close to or away from the fixed clamping block 8-3. The fixed clamping block 8-3 , The sliding clamping block 8-5 and the clamping protrusion 8-4 are arranged along the direction perpendicular to the X-axis, and the operating rod 8-2 passes through the clamping protrusion 8-4 and is threaded with the clamping protrusion 8-4 connected, one end of the operating rod 8-2 is fixedly connected with the sliding clamping block 8-5. Place the workpiece 15 between the fixed clamping block 8-3 and the sliding clamping block 8-5, at this time the axis of the hole to be measured is perpendicular to the X-axis direction, and then tighten the operating rod 8-2, which drives the sliding clamping The block 8-5 slides toward the fixed clamping block 8-3 to clamp the workpiece 15. The clamp has a simple and reliable structure, convenient assembly, simple operation and low cost.

It works as follows:

The workpiece 15 to be tested has two vertically intersecting holes, and the two holes are not in the same plane, first place the base 1 on the horizontal platform, and then place the workpiece 15 on the fixed clamping block 8-3 and the sliding clamping block Between 8-5, the axes of the two holes are perpendicular to the X-axis direction, and the axis of the first hole 15-1 is the same as the axis of the probe 3, and then tighten the operating rod 8-2, which drives the The sliding clamping block 8-5 slides to the fixed clamping block 8-3 to clamp the workpiece 15;

；After the workpiece 15 is clamped, slide the measuring frame 7 to drive the probe 3 to move in the Y-axis direction, slide the measuring ruler connector 2-3 to drive the probe 3 to move in the Z-axis direction, and slide the probe connector 3-2 to drive the measuring probe. Move the probe 3 in the X-axis direction to adjust the position of the probe 3 and insert the small end of the probe 3 into the first hole 15-1 until the probe 3 matches the first hole 15-1. The axis of the probe 3 coincides with the axis of the first hole 15-1. After adjusting the position of the probe 3, as shown in Figure 4, first observe the large scale of the probe connector 3-2 relative to the large scale 2-2 2-2 reading, and then observe the reading of small scale 3-4 aligned with the small scale 3-4 and the large scale 2-2, and write down the scale at this time as

;

；After measuring the position of the first hole 15-1, slide the measuring ruler connecting piece 2-3, the measuring frame 7 and the measuring head connecting piece 3-2 respectively so that the measuring head 3 is in a safe position, and then operate the hollow rotating platform 5 , so that the output turntable 5-2 drives the fixture 8 and the workpiece 15 to rotate 90 degrees, so that the axis of the second hole 15-2 is in the same direction as the axis of the probe 3. After the rotation is completed, repeat the measurement of the first hole 15-1. Steps in the previous step, respectively sliding the measuring frame 7 to drive the probe 3 to move in the Y-axis direction, sliding the measuring ruler connector 2-3 to drive the probe 3 to move in the Z-axis direction, and sliding the probe connector 3-2 to drive the probe 3 Move in the X-axis direction to adjust the position of the probe 3 and insert the small end of the probe 3 into the second hole 15-2 until the probe 3 matches the second hole 15-2. At this time, the probe The axis of 3 coincides with the axis of the second hole 15-2. After adjusting the position, as shown in Figure 5, first observe the reading of the large scale 2-2 of the probe connector 3-2 relative to the large scale 2-2. Then observe the reading of the small scale 3-4 where the small scale 3-4 is aligned with the large scale 2-2, and write down the scale at this time as

;

。In this way, the distance between the center-to-center distances of the two vertically intersecting holes can be measured, and the center-to-center distance between the two vertically intersecting holes is:

.

Claims (5)

1. A hole-to-center distance measuring device for vertically intersecting holes, characterized in that it comprises a base (1), a measuring ruler (2) and a measuring head (3), and the base (1) is sequentially provided along the X-axis direction with A measurement bracket (4) and a hollow rotating platform (5), the measurement bracket (4) is provided with a bracket crossbar (6), and the bracket crossbar (6) is provided with a measurement frame ( 7); the hollow rotating platform (5) includes a box body (5-1) and an output turntable (5-2) rotatably arranged on the box body (5-1), and the output turntable (5-2) has The rotation center line faces the X-axis direction, and the output turntable (5-2) is provided with a clamp (8) for clamping the workpiece (15); the measuring ruler (2) is slidably arranged in the Z-axis direction on the measuring frame ( 7), the measuring ruler (2) is set toward the X-axis direction, and is located between the measuring frame (7) and the fixture (8); the measuring head (3) is a downwardly shrinking cone, the measuring The head (3) is slidably arranged on the measuring ruler (2) along the X-axis direction, with the small end facing down; The measuring head (3) is slidably connected to the measuring ruler (2) along the X-axis direction through the measuring head connecting piece (3-2), and the measuring ruler (2) is engraved with a large scale (2- 2), a small scale (3-4) matching the large scale (2-2) is engraved on the probe connector (3-2) along the X-axis direction; The clamp (8) includes a clamp body (8-1) and an operating rod (8-2), the clamp body (8-1) is fixedly connected to the output turntable (5-2), and the clamp body (8- 1) A fixed clamping block (8-3) and a clamping protrusion (8-4) extend outward in sequence from the side away from the output turntable (5-2), and the clamp body (8-1) is slidably arranged on the There are sliding clamping blocks (8-5) moving close to or away from the fixed clamping blocks (8-3), the fixed clamping blocks (8-3), the sliding clamping blocks (8-5) and the clamping projections The starter (8-4) is arranged along the direction perpendicular to the X-axis, the operating rod (8-2) passes through the clamping protrusion (8-4) and is threadedly connected with the clamping protrusion (8-4). One end of the operating rod (8-2) is fixedly connected with the sliding clamping block (8-5); There are two vertically intersecting holes on the workpiece (15) to be measured, and the two holes are not in the same plane. When measuring, place the workpiece (15) on the fixed clamping block (8-3) and the sliding clamping block (8). -5), the axes of the two holes are perpendicular to the X-axis direction, and the axis of the first hole (15-1) is in the same direction as the axis of the probe (3), and then tighten the operating lever (8). -2), which drives the sliding clamping block (8-5) to slide toward the fixed clamping block (8-3) to clamp the workpiece (15); then, adjust the position of the probe (3) so that the probe ( Insert the small end of 3) into the first hole (15-1) until the probe (3) matches the first hole (15-1), at this time the axis of the probe (3) is aligned with the first hole ( 15-1) The axes coincide, first observe the reading of the large scale (2-2) relative to the probe connector (3-2), and then observe the alignment of the small scale (3-4) with the large scale (2-2) The reading of , write down the scale at this time as l ₁ ; After measuring the position of the first hole (15-1), make the probe (3) slide to a safe position, and then operate the hollow rotating platform (5) to make the output turntable (5-2) drive the clamp (8) And the workpiece (15) is rotated 90 degrees, so that the axis of the second hole (15-2) is in the same direction as the axis of the probe (3), and then repeat the steps when measuring the first hole (15-1), and record the maximum The reading of the scale (2-2) relative to the probe connector (3-2), and then observe the reading on the small scale (3-4) aligned with the large scale (2-2), and write down the scale at this time as l ₂ ; then the hole center distance of two vertically intersecting holes is: l ₂ -l ₁ . 2. The hole-to-center distance measuring device for vertically intersecting holes according to claim 1, characterized in that: a connecting column (3-1) extends upward from the big end of the measuring head (3), and the measuring head connecting piece (3-2) is U-shaped, the connecting column (3-1) is fixedly connected with the probe connecting piece (3-2), and X guide grooves (2- 1), both sides of the probe connector (3-2) are extended inwardly with X guide protruding strips (3-3) matched with the X guide groove (2-1). 3. The hole-to-center distance measuring device for vertically intersecting holes according to claim 1 or 2, characterized in that: the measuring ruler (2) is fixedly provided with a measuring ruler connecting piece (2-3), the measuring ruler (2) The measuring ruler connecting piece (2-3) is slidably arranged on the measuring frame (7), and Y guide grooves (7-1) are opened on both sides of the measuring frame (7), and the measuring ruler is connected to the measuring frame (7). A through hole (2-4) runs through the piece (2-3), the measuring frame (7) passes through the through hole (2-4), and both sides of the through hole (2-4) extend inward There are Y guide protruding strips (2-5) matched with the Y guide grooves (7-1). 4. The hole-to-center distance measuring device for vertically intersecting holes according to claim 1, characterized in that: a connecting block (4-1) extends outward from the bottom end of the measuring bracket (4), and the connecting block ( 4-1) It is fixedly arranged on the base (1), the number of the measurement brackets (4) is two, the two measurement brackets (4) are spaced along the Y-axis direction, and the bracket crossbars (6) The two ends of the two measuring brackets (4) are respectively fixed on the top ends. 5. The hole-to-center distance measuring device for vertically intersecting holes according to claim 1, characterized in that: a control box (5-1) is provided on the side of the box (5-1) away from the output turntable (5-2). 3) A boss (1-1) extends upward on the base (1), and a receiving groove (1-2) is formed at the top of the boss (1-1), and the control box (5- 3) It is placed in the accommodating groove (1-2), and the box body (5-1) is fixedly connected with the boss (1-1).

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