Nut hardness detection device

Abstract

The utility model discloses a nut hardness detection device which comprises a detection table, a lifting part and a supporting part, the detection table is in an arch shape, the lifting part is located on the lower portion of the detection table, the supporting part is located on the upper portion of the lifting part and moves up and down along with the lifting part, and the supporting part comprises a supporting disc and a positioning part. The supporting disc is fixed to the upper portion of the lifting part, the positioning part is located in the middle of the supporting disc and comprises a center groove and a center block, the center groove is formed in the center of the supporting disc, the center block is embedded in the center groove and fixedly connected with the center groove, the center block is matched with the center groove, and the center block is fixedly connected with the center groove. And the top surface of the central block is consistent with the surface of the supporting disc in height. According to the utility model, by arranging the positioning part, a smaller nut can be better positioned on the supporting disc, so that the hardness of the nut can be more accurately measured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the fastener production field, especially a nut hardness detection device. BACKGROUND

[0002] The nut is the nut, and the bolt or the screw rod is together used for the fastening effect spare part, and the nut is used for producing the material quality, and the hardness of the nut is different, and for some particular industry, the hardness of the nut needs to be detected, only the nut that the hardness reaches the standard can be used for production.

[0003] Therefore, the nut needs to be detected, generally uses the Rockwell hardness tester to detect the nut, and the Rockwell hardness tester is a device that can detect the metal hardness by only contacting the sample on one side according to the screw hardness test principle, and for general detection parts, only a few detection points need to be selected for detection.

[0004] And the nut is small in specification, and the detectable area is limited, so in the existing detection mode, the detection personnel often places the nut in the center, visually detects the position of the detection point when the detection head falls, and then moves the nut to adjust the detection point to the middle of the nut, however, this method is time-consuming and laborious, and requires careful observation or skilled detection personnel to have high accuracy, therefore, for the detection of the nut, the detection point needs to be visually detected constantly, and the small nut greatly affects the judgment of the position of the corresponding nut, so the detection is troublesome and often accompanied by undetected conditions. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a nut hardness detection device, which has the advantages of improving detection accuracy with reference marks.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] A nut hardness detection device, comprising a detection table, a lifting part and a supporting part, the detection table is arc-shaped, the lifting part is located at the lower part of the detection table, the supporting part is located at the upper part of the lifting part and moves up and down with the lifting part, the supporting part comprises a supporting disc and a positioning part, the supporting disc is fixed to the upper part of the lifting part, the positioning part is located at the middle part of the supporting disc, the positioning part comprises a center groove and a center block, the center groove is opened in the center of the supporting disc, the center block is embedded in the center groove and fixedly connected with the center groove, the center block is matched with the center groove, so that the top surface of the center block is consistent with the surface height of the supporting disc.

[0008] As preferred, the positioning part further comprises a circular edge part and a hexagonal edge part, the circular edge part is located on opposite sides of the central groove, the hexagonal edge part is also located on opposite sides of the central groove, and the circular edge part and the hexagonal edge part are arranged at intervals around the central groove.

[0009] As preferred, the circular edge part comprises an arc-shaped groove and an arc-shaped block, the arc-shaped groove is provided with two arc-shaped grooves respectively arranged on both sides of the central groove, the arc-shaped block is embedded in the arc-shaped groove and fixedly connected with the arc-shaped groove, and the surface height of the arc-shaped block is consistent with the surface height of the support disc.

[0010] As preferred, the hexagonal edge part comprises a V-shaped groove and a V-shaped block, the V-shaped groove is provided with two V-shaped grooves respectively arranged on both sides of the central groove, the V-shaped block is embedded in the V-shaped groove and fixedly connected with the V-shaped groove, and the surface height of the V-shaped block is consistent with the surface height of the support disc.

[0011] As preferred, the central block, the arc-shaped block and the V-shaped block are three kinds of block bodies with different colors, the size between the two arc-shaped blocks is smaller than the size of the circular nut, and the size between the two V-shaped blocks is smaller than the size of the hexagonal nut.

[0012] As preferred, the top of the detection table is fixedly connected with a pointer display table, and the lower part of the detection table is fixedly connected with an electronic display screen.

[0013] As preferred, the lifting part is a lifting lead screw and a hand wheel.

[0014] By adopting the technical scheme, when the Rockwell hardness of the nut is tested, the nut is placed on the support disc, the part to be detected is first placed at the central block, so that the nut can cover the central block, then according to the type of the nut, if it is a circular nut, the arc-shaped blocks on both sides of the circular nut are completely covered, and if it is a hexagonal nut, the edges of the hexagonal nut cover the V-shaped blocks, so that the part to be measured is more accurate, and the detection head does not touch the nut or does not touch the detection point of the nut when it is lowered.

[0015] Advantages of the utility model: 1, by marking the central block, the position of the detection point is indicated, and the detection point is on the nut when the nut covers the central block; 2, by setting arc-shaped blocks and V-shaped blocks, the detection point on the nut can be more accurate, and the detection point is located on the edge of the nut to avoid the nut from being raised or the detection effect being poor; 3, by setting arc-shaped blocks and V-shaped blocks in two edge identification modes, the circular nut and the hexagonal nut can be guided well; 4, by setting the central block, the arc-shaped block and the V-shaped block into three colors, the three colors are distinguished, and the identification is not confused during detection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure schematic view of an embodiment;

[0017] Figure 2 Position schematic view of a positioning part;

[0018] Figure 3 Structure schematic view of a positioning part;

[0019] Figure 4 Structure schematic view of an embodiment one;

[0020] Figure 5 Structure schematic view of an embodiment two.

[0021] Fig. 1, detection platform; 2, lifting screw; 3, hand wheel; 4, electronic display screen; 5, pointer display table; 6, supporting part; 7, supporting disc; 8, positioning part; 9, center groove; 10, center block; 11, V-shaped groove; 12, V-shaped block; 13, arc-shaped groove; 14, arc-shaped block; 15, hexagonal nut; 16, circular nut. DETAILED DESCRIPTION

[0022] The following description is only a preferred embodiment of the present application, the protection scope is not limited to the embodiment only, and any technical solution falling within the idea of the present application should fall within the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and refinements without departing from the principle of the present application should also be considered as the protection scope of the present application. Embodiment

[0023] With the accompanying drawings Figure 1 As shown in the drawings, a nut hardness detection device, including detection platform 1, lifting part, supporting part 6, detection platform 1 is arc-shaped, the detection platform 1 top fixedly connected with the pointer display table 5, the detection platform 1 is located below the pointer display table 5 fixedly connected with the electronic display screen 4, in order to provide two kinds of observation value mode, more intuitively display the hardness value, the lifting part is located in the lower part of the detection platform 1, the lifting part is lifting screw 2 and hand wheel 3, the supporting part 6 is located in the upper part of the lifting part and moves up and down with the lifting part.

[0024] With the accompanying drawings Figure 2 As shown in the drawings, the supporting part 6 includes supporting disc 7 and positioning part 8, the supporting disc 7 is fixed to the upper part of the lifting part, and the positioning part 8 is located in the middle part of the supporting disc 7.

[0025] With the accompanying drawings Figure 3As shown, the positioning part 8 includes a center groove 9 and a center block 10, the center groove 9 is arranged in the center of the support disc 7, the center block 10 is embedded in the center groove 9 and fixedly connected with the center groove 9, the center block 10 is matched with the center groove 9, so that the top surface of the center block 10 is consistent with the surface height of the support disc 7, the positioning part 8 further includes a circular edge part and a hexagonal edge part, the circular edge part is located on the opposite sides of the center groove 9, and the hexagonal edge part is also located on the opposite sides of the center groove 9, and the circular edge part and the hexagonal edge part are arranged in a spaced manner around the center groove 9.

[0026] With the attached Figure 3 As shown, the circular edge part includes an arc-shaped groove 13 and an arc-shaped block 14, the arc-shaped groove 13 is provided with two arc-shaped grooves 13 arranged on the two sides of the center groove 9, and the arc-shaped block 14 is embedded in the arc-shaped groove 13 and fixedly connected with the arc-shaped groove 13, and the surface height of the arc-shaped block 14 is consistent with the surface height of the support disc 7.

[0027] With the attached Figure 5 As shown, when the circular nut 16 needs to be detected, first, the nut is placed on the support disc 7, so that the circular nut 16 to be detected covers the center block 10, the position of the center block 10 is the detection point when the detection head is lowered, so the detection position on the circular nut 16 is determined after the circular nut 16 covers the center block 10, avoiding the detection of the circular nut 16 not being detected due to the improper placement during detection, but at this time, only the detection point on the circular nut 16 can be ensured, and the position is not determined, and the edge of the circular nut 16 just covers the center point, which will cause the circular nut 16 to be tilted or the detection head to slide along the circular nut 16 during detection, thereby affecting the detection effect.

[0028] Further, the circular nut 16 is finely adjusted, so that when it covers the center block 10, the inner diameter and the outer diameter can cover the arc-shaped block 14 in the middle, so that the detection position is located in the middle of the circular nut 16 rather than the two side edges, avoiding the poor measurement condition caused by the measurement of the edge, so that the Rockwell hardness value of the relatively small circular nut 16 can be accurately detected. Embodiment

[0029] With the attached Figure 1 As shown, a nut hardness detection device includes a detection table 1, a lifting part, and a support part 6, the detection table 1 is arc-shaped, the detection table 1 is fixedly connected with a pointer display table 5 at the top, the detection table 1 is fixedly connected with an electronic display screen 4 at the lower part of the pointer display table 5, so as to provide two kinds of observation value modes, and the hardness value is more directly displayed, the lifting part is located at the lower part of the detection table 1, the lifting part is a lifting lead screw 2 and a hand wheel 3, and the support part 6 is located at the upper part of the lifting part and moves up and down with the lifting part.

[0030] With the attached Figure 2As shown, the support part 6 includes a support disc 7 fixed to the upper part of the lifting part and a positioning part 8 located in the middle part of the support disc 7.

[0031] With the attached Figure 3 As shown, the positioning part 8 includes a center groove 9 opened in the center of the support disc 7 and a center block 10 embedded in the center groove 9 and fixedly connected with the center groove 9. The center block 10 is fitted with the center groove 9 so that the top surface of the center block 10 is consistent with the surface height of the support disc 7. The positioning part 8 also includes a circular edge part and a hexagonal edge part. The circular edge part is located on the opposite sides of the center groove 9, and the hexagonal edge part is also located on the opposite sides of the center groove 9. The circular edge part and the hexagonal edge part are arranged in intervals around the center groove 9.

[0032] With the attached Figure 3 As shown, the hexagonal edge part includes a V-shaped groove 11 and a V-shaped block 12. The V-shaped groove 11 is provided with two V-shaped grooves respectively opened on both sides of the center groove 9. The V-shaped block 12 is embedded in the V-shaped groove 12 and fixedly connected with the V-shaped groove 11. The surface height of the V-shaped block 12 is consistent with the surface height of the support disc 7.

[0033] With the attached Figure 4 As shown, when the hexagonal nut 15 needs to be detected, first place the nut on the support disc 7 so that the hexagonal nut 15 to be detected covers the center block 10. The position of the center block 10 is the detection point when the detection head is down. Therefore, after the hexagonal nut 15 covers the center block 10, the detection position on the hexagonal nut 15 is determined, avoiding the detection of the hexagonal nut 15 not being placed correctly and not being detected. However, at this time, only the detection point on the hexagonal nut 15 can be ensured, and the position is not determined. If the edge of the hexagonal nut 15 just covers the center point, it will cause the hexagonal nut 15 to be tilted or the detection head to slide along the hexagonal nut 15, thereby affecting the detection effect.

[0034] Further, the hexagonal nut 15 is finely adjusted so that when it covers the center block 10, the inner diameter and the outer diameter can cover the V-shaped block 12 in the middle, so that the detection position is located in the middle of the hexagonal nut 15 rather than the two side edges, avoiding the poor measurement condition when measuring the edge, so that the Rockwell hardness value of the relatively small hexagonal nut 15 can be accurately detected.

[0035] In order to better distinguish the identification that needs to be covered in example one and example two, the center block 10, the arc-shaped block 14 and the V-shaped block 12 are three kinds of blocks with different colors, and the size between the two arc-shaped blocks 14 is smaller than the size of the circular nut 16, and the size between the two V-shaped blocks 12 is smaller than the size of the hexagonal nut 15, so as to better cover.

Claims

1. A nut hardness detection device, comprising a detection table (1), a lifting part, a supporting part (6), the detection table (1) is arc-shaped, the lifting part is located at the lower part of the detection table (1), and the supporting part (6) is located at the upper part of the lifting part and moves up and down following the lifting part, characterized in that, The support part (6) comprises a support disc (7) and a positioning part (8), the support disc (7) is fixed on the upper part of the lifting part, the positioning part (8) is located in the middle part of the support disc (7), the positioning part (8) comprises a center groove (9) and a center block (10), the center groove (9) is arranged in the center of the support disc (7), the center block (10) is embedded in the center groove (9) and fixedly connected with the center groove (9), the center block (10) is matched with the center groove (9), so that the top surface of the center block (10) is consistent with the surface height of the support disc (7).

2. The nut hardness detection device according to claim 1, characterized in that, The positioning part (8) further comprises a circular edge part and a hexagonal edge part, the circular edge part is located on the opposite sides of the center groove (9), and the hexagonal edge part is also located on the opposite sides of the center groove (9), the circular edge part and the hexagonal edge part are arranged at intervals around the center groove (9).

3. The nut hardness detection device according to claim 2, characterized in that, The circular edge part comprises an arc-shaped groove (13) and an arc-shaped block (14), the arc-shaped groove (13) is provided with two, which are arranged on the two sides of the center groove (9), respectively, the arc-shaped block (14) is embedded in the arc-shaped groove (13) and fixedly connected with the arc-shaped groove (13), and the surface height of the arc-shaped block (14) is consistent with the surface height of the support disc (7).

4. The nut hardness detection device according to claim 3, characterized in that, The hexagonal edge part comprises a V-shaped groove (11) and a V-shaped block (12), the V-shaped groove (11) is provided with two, which are arranged on the two sides of the center groove (9), respectively, the V-shaped block (12) is embedded in the V-shaped block (12) and fixedly connected with the V-shaped groove (11), and the surface height of the V-shaped block (12) is consistent with the surface height of the support disc (7).

5. The nut hardness detection device according to claim 4, wherein The center block (10), the arc-shaped block (14) and the V-shaped block (12) are three block bodies with different colors, the size between the two arc-shaped blocks (14) is smaller than that of the circular nut (16), and the size between the two V-shaped blocks (12) is smaller than that of the hexagonal nut (15).

6. The nut hardness detection device according to claim 5, wherein The detection table (1) is fixedly connected with a pointer display table (5), and the detection table (1) is fixedly connected with an electronic display screen (4) below the pointer display table (5).

7. The nut hardness detection device of claim 5, wherein The lifting part is a lifting lead screw (2) and a hand wheel (3).

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