CN107796281B - The detection instrument of end toper platform path in a kind of measurement deep hole - Google Patents

Abstract

The invention belongs to measuring instrument technical fields, more particularly to a kind of detection instrument for measuring end toper platform path in deep hole, including mobile jib and the measuring rod parallel with mobile jib, mobile jib is disposed with locating cone, fixing clamp and guide rail from bottom to up, locating cone is slidably arranged on mobile jib, and locating cone and mobile jib are concentric, and circumferential surface to the axle center of locating cone offers measuring flume, are provided with graduation mark on the end face of measuring flume；Handle and dragging block are provided on measuring rod, handle is slidably arranged on measuring rod, handle and guide rail cooperation drive measuring rod to move close to or far from mobile jib, vernier is overlapped on dragging block, vernier is translated with dragging block along measuring flume, vernier is arranged between fixing clamp and locating cone, and fixing clamp and dragging block limitation vernier are axially moved, and vernier and dragging block are detached under measuring rod state of weightlessness.

Description

A detection tool for measuring the small diameter of the conical table at the inner end of the deep hole

technical field

The invention belongs to the technical field of measuring instruments, in particular to a detection tool for measuring the small diameter of a conical table at the inner end of a deep hole.

Background technique

Due to the difference in depth and diameter, the traditional measuring tools often have the disadvantages of measurement difficulties and large errors in the measurement data when measuring the inner cone of the deep hole. The measurement cost is high and the operation technology is high, so it is impossible to do on-site measurement. For the measurement of non-standard parts, the measurement personnel are often required to go to the site to measure the assembly situation. This product mainly solves how to quickly and accurately measure the cone inside the deep hole. At the same time, this product can also determine the depth of the deep hole, improve the internal dimensions of the deep hole parts, and the operation is simple, easy to master and suitable for on-site measurement.

SUMMARY OF THE INVENTION

In order to solve the problem of difficulty in measuring the small diameter of the conical table inside the deep hole in the prior art, the present invention provides a detection tool for measuring the small diameter of the conical table at the inner end of the deep hole.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is as follows, a detection tool for measuring the small diameter of the conical table at the inner end of the deep hole, including a main rod and a measuring rod parallel to the main rod, the main rod is sequentially from bottom to top. A positioning cone, a fixing clip and a guide rail are provided, the positioning cone is slidably arranged on the main rod, and the positioning cone and the main rod are coaxial, and a measurement is provided from the peripheral surface of the positioning cone to the shaft center a groove, the end face of the measuring groove is provided with a scale line;

The measuring rod is provided with a handle and a drag block, the handle is slidably arranged on the measuring rod, and the handle cooperates with the guide rail to drive the measuring rod to move closer to or away from the main rod, and the drag The moving block is overlapped with a vernier, the vernier translates along the measuring slot along with the dragging block, the vernier is arranged between the fixing clip and the positioning cone, the fixing clip and the The dragging block restricts the axial movement of the vernier, and the vernier is separated from the dragging block in the state of weightlessness of the measuring rod.

Preferably, one end of the fixing clip is slidably sleeved on the main rod, and is fixed on the main rod by a locking screw, and the fixing clip is provided with a matching vernier and the dragging block. The vernier groove, where the vernier groove is located, is in the same direction as the measurement groove. When the locking screw is loosened, the fixing clip can slide on the main pole, and when the locking screw is tightened, the fixing clip is fixed on the main pole, which is convenient for the assembly and position adjustment of the fixing clip.

Preferably, a U-shaped card slot extends outward from one end of the drag block close to the main rod, and a protrusion that matches the U-shaped card groove extends on the vernier, and the protrusion overlaps the U-shaped card groove. type card slot. The U-shaped slot and the protrusion are matched and overlapped to ensure that when the measuring rod drives the dragging block to descend, the dragging block and the vernier are separated.

Preferably, the dragging block is sleeved on the measuring rod and fixed by locking screws. When the locking screw is loosened, the dragging block can slide on the main rod, and when the locking screw is tightened, the dragging block is fixed on the main rod, which is convenient for the assembly and position adjustment of the dragging block.

Preferably, the handle is slidably sleeved on the measuring rod, a sleeve and a spring are slidably sleeved on the measuring rod, the upper end of the sleeve abuts against the bottom end of the handle, and the spring One end is abutted on the inner wall of the sleeve, and the other end is abutted against a spring stopper, and the spring stopper is fixed on the measuring rod.

Further, the spring blocking member includes a positioning member and a locking member, the upper end of the positioning member has a flange extending outward, and the lower end is provided with a cylinder, the wall thickness of the cylinder gradually becomes thinner downward, the There is at least one notch extending through the cylinder along its axial direction, and the inner wall of the locking member is provided with a groove that cooperates with the cylinder. When the locking member approaches the positioning member, the spring blocking member is blocked Locked on the measuring rod, the spring abuts on the outer end face of the flange, and the outer diameter of the flange is smaller than the inner diameter of the sleeve. The positioning piece moves to the part to be positioned, and the groove of the locking piece is pushed toward the cylinder to lock the positioning piece, and the spring blocking piece can realize convenient and fast positioning and locking.

Further, a spring stopper is also provided on the main rod, the flange on the main rod is in contact with the upper end face of the guide rail, and the sleeve is in contact with the lower end face of the guide rail to fix the guide rail on the guide rail. Between the spring stop on the main rod and the sleeve on the measuring rod.

Further, one end of the guide rail is slidably arranged on the main rod, and the other end is provided with a long groove that cooperates with the measuring rod. The groove, the guide groove and the guide rail are in the same direction.

Further, a roller is fixed at the bottom end of the measuring rod. The roller increases the contact area with the measuring surface, and when the measuring surface is not flat, the roller prevents the measuring rod from skewing and jumping up and down, thus reducing the measurement error. The scroll wheel also aids the movement of the measuring rod.

Beneficial effects: the present invention enables the inspection tool to have a larger measurement depth through the main rod and the measuring rod, and at the same time, the reference position during measurement is ensured through the positioning cone, and the specific depth of the measurement position can also be expressed. The contact measurement between the roller at the bottom end of the rod and the object to be measured reduces the error to the greatest extent, and the invention is easy to carry, easy to operate, and can be used for on-site measurement, thereby reducing the measurement cost and improving the measurement efficiency.

Description of drawings

Fig. 1 is a kind of three-dimensional structure schematic diagram of the detection tool of the present invention for measuring the small diameter of the inner end conical platform of a deep hole;

Fig. 2 is a three-dimensional structure schematic diagram of a detection tool of the present invention for measuring the small diameter of a conical table at the inner end of a deep hole (wherein the component fixing clip and the guide rail are not shown);

3 is a schematic exploded schematic diagram of a partial structure of a detection tool for measuring the small diameter of a conical platform at the inner end of a deep hole of the present invention;

4 is a schematic diagram of the connection between a component cursor and a drag block of a detection tool for measuring the small diameter of a conical table at the inner end of a deep hole of the present invention;

5 is a schematic diagram of a component spring stopper of a detection tool for measuring the small diameter of a conical table at the inner end of a deep hole according to the present invention;

In the picture 1, main rod, 2, measuring rod, 3, positioning cone, 3-1, measuring groove, 4, fixing clip, 4-1, vernier groove, 5, guide rail, 5-1, long groove, 5-2 , Guide slot, 6, Handle, 7, Drag block, 7-1, U-shaped card slot, 8, Vernier, 8-1, Raised, 9, Locking screw, 10, Sleeve, 11, Spring, 12 , Spring Stopper, 12-1, Positioning Piece, 12-1-1, Flange, 12-1-2, Cylinder, 12-1-3, Notch, 12-2, Locking Piece, 12-2- 1. Groove, 13. Roller.

Detailed ways

Example

As shown in Figures 1 to 5, a detection tool for measuring the small diameter of a conical table at the inner end of a deep hole includes a main rod 1 and a measuring rod 2 parallel to the main rod 1. The main rod 1 is sequentially provided with positioning from bottom to top Cone 3, fixing clip 4 and guide rail 5, the positioning cone 3 is slidably arranged on the main rod 1, and the positioning cone 3 and the main rod 1 are coaxial, and the peripheral surface of the positioning cone 3 reaches The shaft center is provided with a measuring groove 3-1, and the end face of the measuring groove 3-1 is provided with a scale line;

The measuring rod 2 is provided with a handle 6 and a drag block 7, the handle 6 is slidably arranged on the measuring rod 2, and the handle 6 cooperates with the guide rail 5 to drive the measuring rod 2 to approach or away from the measuring rod 2. The main rod 1 moves, the drag block 7 is overlapped with a cursor 8, the cursor 8 translates along the measurement slot 3-1 along with the drag block 7, and the cursor 8 is arranged on the Between the fixed clip 4 and the positioning cone 3, the fixed clip 4 and the drag block 7 restrict the axial movement of the vernier 8, and the vernier 8 and the drag Block 7 disengages.

One end of the fixing clip 4 is slidably sleeved on the main rod 1, and is fixed on the main rod 1 by a locking screw 9. The fixing clip 4 is provided with the vernier 8 and the drag. The vernier groove 4-1 matched with the moving block 7 is located in the same direction as the vernier groove 4-1 of the measuring groove 3-1.

As shown in FIG. 4 , a U-shaped card slot 7-1 extends outward from one end of the drag block 7 close to the main rod 1, and the cursor 8 extends with a protrusion that matches the U-shaped card slot 7-1. 8-1, the protrusion 8-1 is overlapped in the U-shaped slot 7-1.

The dragging block 7 is sleeved on the measuring rod 2 and fixed by a locking screw 9 .

The handle 6 is slidably sleeved on the measuring rod 2 , a sleeve 10 and a spring 11 are slidably sleeved on the measuring rod 2 , and the upper end of the sleeve 10 abuts against the bottom end of the handle 6 , One end of the spring 11 abuts against the inner wall of the sleeve 10 , and the other end abuts against a spring blocking member 12 , and the spring blocking member 12 is fixed on the measuring rod 2 .

As shown in FIG. 5 , the spring blocking member 12 includes a positioning member 12-1 and a locking member 12-2. The upper end of the positioning member 12-1 is extended with a flange 12-1-1, and the lower end is provided with a flange 12-1-1. Cylinder 12-1-2, the wall thickness of the cylinder 12-1-2 gradually becomes thinner downward, and the cylinder 12-1-2 extends upward and has at least one gap 12-1-3 extending through its axial direction , the inner wall of the locking member 12-2 is provided with a groove 12-2-1 that cooperates with the cylinder 12-1-2, and the locking member 12-2 faces the positioning member 12-1. When approaching, the spring blocking member 12 is locked on the measuring rod 2, the spring 11 abuts against the outer end surface of the flange 12-1-1, and the outer surface of the flange 12-1-1 The diameter is smaller than the inner diameter of the sleeve 10 .

The main rod 1 is also provided with a spring stopper 12 , the flange 12 - 1 - 1 on the main rod 1 is in contact with the upper end surface of the guide rail 5 , and the sleeve 10 is in contact with the lower part of the guide rail 5 . The end contact fixes the guide rail 5 between the spring stop 12 on the main rod 1 and the sleeve 10 on the measuring rod 2 .

One end of the guide rail 5 is slidably arranged on the main rod 1, and the other end is provided with a long groove 5-1 that cooperates with the measuring rod 2. Both sides of the long groove 5-1 are provided with the handle 6. The guide groove 5-2, the long groove 5-1, the guide groove 5-2 and the guide rail 5 are in the same direction.

A roller 13 is fixed at the bottom end of the measuring rod 2 .

It works as follows:

Before measuring, first predict the depth of the deep hole, adjust the position of the positioning cone 3 on the main rod 1, and move the handle 6 to move the measuring rod 2 to the position close to the main rod 1, so that the vernier 8 is zeroed, and then the main rod 1 and the main rod 1 are moved. Insert the measuring rod 2 into the deep hole to be measured, move the positioning cone 3 to determine the center of the deep hole, and then contact the bottom ends of the main rod 1 and the measuring rod 2 with the end face of the conical table inside the deep hole. The point where the shaft center contacts the cone is the center of the end face of the cone. Then, overlap the protrusion 8-1 on the vernier 8 with the U-shaped slot 7-1 on the drag block 7, and then fix the fixing clip 4 and the drag block 7 with the locking screw 9, so as to limit the axis of the vernier 8 Then, the spring stopper 12 on the measuring rod 2 is locked at the corresponding position, the sleeve 10 is pressed down to deform the spring 11, and the handle 6 is moved to the position in contact with the sleeve 10, and then the main rod is locked. The handle 6 and the guide rail 5 are fixed by the spring stop 12 on the 1 .

Then start the measurement, move the handle 6, the handle 6 drives the measuring rod 2 to translate away from the main rod 1, the drag block 7 drags the cursor 8 to translate along the measuring groove 3-1, and the roller 13 at the bottom end of the measuring rod 2 is in the deformation of the spring 11. Always in contact with the cone surface under action. When the slope of the surface of the conical table descends, the measuring rod 2 moves down along the slope under the action of the spring 11, and at the same time, the drag block 7 moves down and is separated from the vernier 8. At this time, the vernier 8 stays on the corresponding scale, and the Obtain the minor diameter dimension of the inner cone of the deep hole. At the same time, the position of the conical platform in the deep hole can be measured by the distance from the end face of the positioning cone 3 to the bottom end of the main rod 1 and the distance from the end face of the positioning cone 3 to the end face of the deep hole.

Claims (9)

1. it is a kind of measurement deep hole in end toper platform path detection instrument, it is characterised in that: including mobile jib (1) and with mobile jib (1) Parallel measuring rod (2), the mobile jib (1) are disposed with locating cone (3), fixing clamp (4) and guide rail (5), institute from bottom to up It states locating cone (3) to be slidably arranged on the mobile jib (1), and the locating cone (3) and the mobile jib (1) are concentric, it is described Circumferential surface to the axle center of locating cone (3) offers measuring flume (3-1), is provided with graduation mark on the end face of the measuring flume (3-1)；

Handle (6) and dragging block (7) are provided on the measuring rod (2), the handle (6) is slidably arranged in the measuring rod (2) on, the handle (6) and the guide rail (5) cooperation drive the measuring rod (2) to move close to or far from the mobile jib (1), It is overlapped with vernier (8) on the dragging block (7), the vernier (8) is as the dragging block (7) is along the measuring flume (3-1) Translation, the vernier (8) are arranged between the fixing clamp (4) and the locating cone (3), the fixing clamp (4) and described drag Motion block (7) limits the vernier (8) and is axially moved, the vernier (8) and the dragging block under measuring rod (2) state of weightlessness (7) it is detached from.

2. the detection instrument of end toper platform path in measurement deep hole according to claim 1, it is characterised in that: the fixation One end of folder (4) is slidably located on the mobile jib (1), and is fixed on the mobile jib (1) by lock-screw (9), described The vernier slot (4-1) with the vernier (8) and dragging block (7) cooperation, locating vernier slot (4- are offered on fixing clamp (4) 1) consistent with the measuring flume direction (3-1).

3. the detection instrument of end toper platform path in measurement deep hole according to claim 1, it is characterised in that: the dragging Block (7) is outward extended with U-shaped card slot (7-1) close to the one end of the mobile jib (1), is extended on the vernier (8) and U-shaped card slot The protrusion (8-1) of (7-1) cooperation, the protrusion (8-1) are overlapped in the U-shaped card slot (7-1).

4. the detection instrument of end toper platform path in measurement deep hole according to claim 1, it is characterised in that: the dragging Block (7) is set on the measuring rod (2), and fixed by lock-screw (9).

5. the detection instrument of end toper platform path in measurement deep hole according to claim 1, it is characterised in that: the handle (6) it is slidably located on the measuring rod (2), sliding sleeve is equipped with sleeve (10) and spring (11) on the measuring rod (2), described The upper end of sleeve (10) is resisted against the bottom end of the handle (6), and one end of the spring (11) is resisted against the sleeve (10) On inner wall, against having spring stop (12), the spring stop (12) is fixed on the measuring rod (2) other end.

6. the detection instrument of end toper platform path in measurement deep hole according to claim 5, it is characterised in that: the spring Stop (12) includes locating piece (12-1) and locking member (12-2), and the upper end of the locating piece (12-1) is outward extended with flange (12-1-1), lower end offer cylinder (12-1-2), the wall thickness taper downward of the cylinder (12-1-2), the cylinder Prolong it on (12-1-2) and axially penetrated through at least one notch (12-1-3), offered on the inner wall of the locking member (12-2) with The groove (12-2-1) of cylinder (12-1-2) cooperation, bullet when locking member (12-2) the Xiang Suoshu locating piece (12-1) is drawn close Spring stop (12) is locked on the measuring rod (2), and the spring (11) is resisted against the outer of the flange (12-1-1) On end face, the outer diameter of the flange (12-1-1) is less than the internal diameter of the sleeve (10).

7. the detection instrument of end toper platform path in measurement deep hole according to claim 6, it is characterised in that: the mobile jib (1) it is also equipped on spring stop (12), the upper surface of the flange (12-1-1) on the mobile jib (1) and the guide rail (5) Guide rail (5) is fixed on the spring on the mobile jib (1) by the lower end face contact of contact, the sleeve (10) and the guide rail (5) Between sleeve (10) in stop (12) and measuring rod (2).

8. the detection instrument of end toper platform path in measurement deep hole according to claim 1 or claim 7, it is characterised in that: described One end of guide rail (5) is slidably arranged on the mobile jib (1), and the other end offers the elongated slot (5-1) with measuring rod (2) cooperation, The guide groove (5-2) having with the handle (6) cooperation is run through in the two sides of the elongated slot (5-1), and the elongated slot (5-1) described is led It is consistent with the guide rail (5) direction to slot (5-2).

9. the detection instrument of end toper platform path in measurement deep hole according to claim 1, it is characterised in that: the measurement Bar (2) bottom end is fixed with idler wheel (13).