CN211668471U - Utensil is examined to chamfer degree of depth - Google Patents

Abstract

A chamfering depth inspection tool includes a base, the base includes a base body and a chute located on the base body, the lower end of the chute is flush with the lower plane of the base body, and the lower end of the base body is further provided with a Vertical positioning rod, the left side of the positioning rod is flush with the right side wall of the chute, and the rear plane of the positioning rod is flush with the bottom surface of the chute; a measuring block is slidably connected in the chute, and the measuring block includes a measuring block body and is arranged on the measuring block. The lower end of the block body is used to detect the chamfering depth. There is a digital display moving grid assembly used to detect the displacement of the measuring block and display the detection results. A locking screw that moves the measuring block vertically on the base; it has the characteristics of convenient operation, simple structure, reliability and high precision.

Description

A chamfering depth inspection tool

technical field

The utility model belongs to a detection device in the machining industry of mechanical parts, in particular to a chamfering depth detection tool.

Background technique

At present, in the machining industry, the machining of holes is very common in the machining of components. Generally, the orifice is chamfered, and the chamfer has two main purposes. The most common purpose is to remove flanging burrs and prevent Damage, this kind of chamfering does not require high size and does not need special control. Another purpose is that the chamfering plays a guiding or sealing role in the assembly. Special control of the angle and depth of the chamfering is required to ensure the chamfering. Guiding or sealing function. At present, for the detection of this kind of chamfer, the angle of the chamfer is mainly guaranteed by the tool directly, just select the corresponding specification of the tool, the angle is standard, generally do not need special detection, and the difficulty lies in the depth detection of the chamfer, inversion The depth of the corner will change with the difference of the tool feed during processing. To accurately determine the depth of the chamfer, it is necessary to detect the depth of the chamfer. At present, the detection of the chamfer depth is relatively rough. Usually, the vernier caliper is used to roughly measure the depth of the chamfer. , the test results are not objective and accurate, and the chamfering depth cannot be guaranteed to meet the requirements.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the above-mentioned deficiencies of the existing technology and provide a chamfering depth inspection tool with simple operation, high precision, convenience and practicality.

The technical scheme of the present utility model is:

A chamfering depth inspection tool includes a base, the base includes a base body and a chute located on the base body, the lower end of the chute is flush with the lower plane of the base body, and the lower end of the base body is further provided with a Vertical positioning rod, the left side of the positioning rod is flush with the right side wall of the chute, and the rear plane of the positioning rod is flush with the bottom surface of the chute;

A measuring block is slidably connected in the chute. The measuring block includes a measuring block body and a measuring head arranged at the lower end of the measuring block body for detecting the chamfering depth. The right side of the measuring head is flush with the right side wall of the sliding groove, and the bottom surface is It is flush with the bottom surface of the chute, the left side is an inclined surface, the right side of the probe, the bottom surface, and the inclined surface intersect downward as a point, and the angle between the left side hypotenuse and the vertical direction is α;

The body of the measuring block is fixedly connected with a digital display moving grid assembly for detecting the displacement of the measuring block and displaying the detection result. The seat restricts the vertical movement of the digital display moving grid assembly and the measuring block on the base.

The lower end of the base body is provided with two horizontal supports, the two horizontal supports are respectively arranged at the left and right ends of the base body, and the bottom surface of each horizontal support is parallel to the bottom surface of the base body.

The upper end of the chute is flush with the upper plane of the base body.

The measuring head has a triangular structure.

The left side of the positioning rod is wedge-shaped, and the upper end of the wedge is provided with a groove.

The angle α between the hypotenuse of the left side of the probe and the vertical direction is smaller than the minimum chamfer angle of the chamfer to be detected.

The length of the measuring block is less than the length of the chute, and the measuring block and the chute are clearance fit.

The measuring block body is provided with more than two threaded holes, the digital display moving grid assembly is provided with more than two screw mounting holes, the screw mounting holes correspond to the threaded holes one by one, and the digital display moving grid assembly and the measuring block body The connection is secured with screws.

The digital display moving grid assembly is in clearance fit with the outer wall of the base body, and the threaded through hole is arranged on one side of the digital display moving grid assembly.

It also includes a calibration block for calibrating the chamfering depth inspection tool for zero, and the calibration block is a rectangular block structure.

Compared with the prior art, the utility model has the characteristics of convenient operation, simple structure, reliability and high precision. The utility model solves the problems that the conventional caliper detection cannot accurately detect the chamfering depth when machining high-precision orifice chamfering, and the scanning calculation using the profiler is complicated in operation and low in efficiency, namely, the detection time is saved and the work efficiency is improved. At the same time, due to its simple use, it can be frequently used for process monitoring, ensuring stable and reliable product processing quality, and can be widely used in mechanical processing.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the side view of the present utility model;

Fig. 3 is the structure diagram of the base;

Fig. 4 is the bottom view of Fig. 3;

Fig. 5 is the structure diagram of measuring block;

Figure 6 is a three-dimensional structural view of the probe;

Fig. 7 is the calibration principle diagram of the present utility model;

Fig. 8 is the working principle diagram of the present invention.

Detailed ways

In FIGS. 1 and 2 , the utility model is composed of a base 1, a measuring block 2, a digital display moving grid assembly 3, and a locking screw 4. The base 1 includes a base body 11 and a chute located on the base body 11. 13. The lower end of the chute 13 is flush with the lower plane of the base body 11, the lower end of the base body 11 is also provided with a vertical positioning rod 14, the left side of the positioning rod 14 is flush with the right side wall of the chute 13; the chute 13 A measuring block 2 is slidably connected inside. The measuring block 2 includes a measuring block body 21 and a measuring head 22 arranged at the lower end of the measuring block body 21 for detecting the chamfering depth. The right side of the measuring head 22 is flush with the right side wall of the chute 13 The bottom surface is flush with the bottom surface of the chute 13, and the left side is an inclined surface. The angle α is less than the minimum chamfering angle of the chamfer to be detected, the length of the measuring block 2 is less than the length of the chute 13, and the measuring block 2 and the chute 13 are in clearance fit; the measuring block body 21 is fixedly connected with a measuring block 2 for detecting the displacement of the measuring block 2. The digital display moving grid assembly 3 showing the test results, the digital display moving grid assembly 3 has a threaded through hole, and the threaded through hole is equipped with a top against the base 1 to limit the digital display moving grid assembly 3, and the measuring block 2 is in The locking screw 4 of the vertical movement range on the base 1; the digital display moving grid assembly 3 is in clearance fit with the outer wall of the base body 11, and the threaded through hole is provided on one side of the digital display moving grid assembly 3.

In FIGS. 3 and 4 , the base 1 includes a base body 11 and a chute 13 located on the base body 11 . The upper end of the chute 13 is flush with the upper plane of the base body 11 , and the lower end of the chute 13 is flush with the base body 11 . The lower plane is flush, the lower end of the base body 11 is also provided with a vertical positioning rod 14, the left side of the positioning rod 14 is flush with the right side wall of the chute 13, the left side of the positioning rod 14 is wedge-shaped, and the wedge shape can make the positioning rod 14 The front and back intersect to form a straight line, which coincides with the bottom surface of the chute 13 and the intersection line on the right side. The function is that when measuring the chamfering of the hole, the positioning rod 14 can be in contact with the hole wall line to ensure that there is no gap and ensure the measurement. Accuracy, there is a groove on the upper end of the wedge. The groove is to prevent the inability to clear the root when machining the right-angle edge structure where the lower plane of the measuring block body and the positioning rod intersect. The right-angle edge cannot be machined in machining, because the tool blade The tip part is not a sharp corner, but there will be a rounded corner. The corner of the processed right-angled edge is not a right angle, but an R angle. It is necessary to process an undercut to eliminate it, so as to prevent zero alignment due to the existence of the R angle. During calibration, the above-mentioned right-angle side and the calibration block do not fit tightly, which affects the zero-accuracy. The lower bottom surface of each horizontal support 12 is parallel to the lower bottom surface of the base body 11 .

In FIGS. 5 and 6 , the measuring block 2 includes a measuring block body 21 and a measuring head 22 arranged at the lower end of the measuring block body 21 for detecting the chamfering depth. The measuring head 22 has a triangular structure, and its right side is connected to the chute 13 The right side wall is flush, the bottom surface is flush with the bottom surface of the chute 13, the left side is an inclined surface, the intersection of the three surfaces is a point, the angle between the left hypotenuse and the vertical direction is α, and the angle α is smaller than the detected angle. The minimum chamfering angle of the chamfer can detect the chamfering depth whose chamfering angle is greater than its included angle α. The screw mounting holes correspond to the threaded holes 23 one by one, and the digital display moving grid assembly 3 and the measuring block body 21 are fixedly connected by screws.

In FIG. 7, the utility model needs to be calibrated to zero for the first use, first press the power switch button 31 of the digital display moving grid assembly 3, the display screen 33 starts to display numbers, and then the horizontal support 12 of the utility model base 1 is flattened On the upper plane of the calibration block 5, press the positioning rod 14 against the side of the calibration block 5, press the horizontal support 12, push the digital display moving grid assembly 3, and drive the measuring block 2 to slide down until the measuring head 22 is on the upper plane of the calibration block 5. , tighten the locking screw 4, lock the position of the measuring block 2, press the zero button 32, until the number on the display 33 returns to zero, and the zero calibration is completed.

In FIG. 8 , when the utility model works, the positioning rod 14 is first inserted into the hole, and the two horizontal supports 12 at the lower end of the base 1 are flattened against the plane of the hole of the part, and the whole is moved to the left wedge portion of the positioning rod 14 and the hole. Fit the inner wall, press the horizontal support 12, push the digital display moving grid assembly 3, and drive the measuring block 2 to slide down until the measuring head 22 is close to the chamfered root of the upper orifice, tighten the locking screw 4, and lock the position of the measuring block 2. At this time, the number displayed on the display screen 33 of the digital display moving grid assembly 3 is the chamfering depth of the orifice; the detection is based on the intersection of the chamfer and the straight edge, which is not affected by the deviation of the chamfer angle. The included angle of the inspection head of the inspection tool is a small angle α, which can detect all the chamfers larger than the angle α; there is no need to customize the inspection head according to the size of the chamfer angle.

Claims (10)

1. The utility model provides a utensil is examined to chamfer degree of depth which characterized in that: the base (1) comprises a base body (11) and a sliding groove (13) positioned on the base body (11), the lower end of the sliding groove (13) is flush with the lower plane of the base body (11), a vertical positioning rod (14) is further arranged at the lower end of the base body (11), the left side surface of the positioning rod (14) is flush with the right side wall of the sliding groove (13), and the rear plane of the positioning rod (14) is flush with the bottom surface of the sliding groove (13);

the measuring block (2) is connected in the sliding groove (13) in a sliding mode, the measuring block (2) comprises a measuring block body (21) and a measuring head (22) arranged at the lower end of the measuring block body (21) and used for detecting the chamfering depth, the right side face of the measuring head (22) is flush with the right side wall of the sliding groove (13), the bottom face of the measuring head is flush with the bottom face of the sliding groove (13), the left side face of the measuring head is an inclined face, the right side face, the bottom face and the inclined face of the measuring head (22) are intersected downwards to form a point, and the;

the measuring block body (21) is fixedly connected with a digital display moving grid assembly (3) used for detecting the displacement of the measuring block (2) and displaying a detection result, a threaded through hole is formed in the digital display moving grid assembly (3), and a locking screw (4) is arranged in the threaded through hole, the top of the locking screw abuts against the base (1) to limit the digital display moving grid assembly (3) and the measuring block (2) to vertically move on the base (1).

2. The chamfer depth gauge according to claim 1, wherein: two horizontal supports (12) are arranged at the lower end of the base body (11), the two horizontal supports (12) are respectively arranged at the left end and the right end of the base body (11), and the lower bottom surface of each horizontal support (12) is parallel to the lower bottom surface of the base body (11).

3. The chamfer depth gauge according to claim 1, wherein: the upper end of the sliding groove (13) is flush with the upper plane of the base body (11).

4. The chamfer depth gauge according to claim 1, wherein: the measuring head (22) is in a triangular prism structure.

5. The chamfer depth gauge according to claim 1, wherein: the left side surface of the positioning rod (14) is wedge-shaped, and a groove is formed in the upper end of the wedge-shaped.

6. The chamfer depth gauge according to claim 1, wherein: and the included angle alpha between the bevel edge of the left side surface of the measuring head (22) and the vertical direction is smaller than the minimum chamfer angle of the detected chamfer.

7. The chamfer depth gauge according to claim 1, wherein: the length of the measuring block (2) is smaller than that of the sliding groove (13), and the measuring block (2) is in clearance fit with the sliding groove (13).

8. The chamfer depth gauge according to claim 1, wherein: the measuring block is characterized in that more than two threaded holes (23) are formed in the measuring block body (21), more than two screw mounting holes are formed in the digital display moving grid assembly (3), the screw mounting holes correspond to the threaded holes (23) one to one, and the digital display moving grid assembly (3) is fixedly connected with the measuring block body (21) through screws.

9. The chamfer depth gauge according to claim 1, wherein: the digital display moving grid assembly (3) is in clearance fit with the outer wall of the base body (11), and the threaded through hole is formed in one side edge of the digital display moving grid assembly (3).

10. The chamfer depth gauge according to claim 1, wherein: the zero-calibration chamfer depth gauge further comprises a calibration block (5) used for calibrating the zero-calibration chamfer depth gauge, and the calibration block (5) is of a rectangular block structure.

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