An indentation depth measuring device

Abstract

The utility model discloses an indentation depth measuring device, comprising a supporting mechanism, on which a measuring mechanism and a fixing component are transmission-connected; the fixing component is used to fix a workpiece to be measured, and the measuring mechanism is used to measure the indentation depth of the workpiece to be measured, the supporting mechanism comprises a bottom supporting plate, on which a supporting column is installed by bolts, a lifting component is installed on the supporting column, and the measuring mechanism and the fixing component are both installed on the lifting component, and relate to the technical field of indentation depth measurement, by setting the measuring mechanism, using the indication of an ammeter in a circuit to judge the length of a conductive rod connected to the circuit, and then indirectly knowing the depth of the indentation, so that the indentation depth can be measured quickly, and compared with the measurement method of an artificial handheld vernier caliper, the measurement error of the method is small, and the measurement is more accurate and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of indentation depth measurement, in particular to an indentation depth measurement device. Background Art

[0002] According to the patent application number CNCN206037907U, a "device for measuring the depth of weld nugget indentation" is disclosed, which includes a main scale and a vernier scale installed on the main scale, the vernier scale can slide along the length direction of the main scale, the main scale is provided with a fixed measuring claw, the vernier scale is provided with a movable measuring claw, the fixed measuring claw is provided with a first measuring head, the movable measuring claw is provided with a second measuring head, the first measuring head and the second measuring head are arranged opposite to each other, and the opposite ends of the first measuring head and the second measuring head are both sharp; when the vernier scale slides, the ends of the first measuring head and the second measuring head are in contact.

[0003] The technical solution of the above patent has the following deficiencies:

[0004] Manual measurement with a vernier caliper has low measurement efficiency and is limited by the worker's ability and attitude, making it difficult to ensure measurement accuracy.

[0005] Based on the vernier caliper, an active measuring claw and a measuring head structure are added thereon. The total depth of only one weld core indentation can be measured at a time. The depth and position distribution of the entire weld core cannot be measured, and the reference surface cannot be determined for subsequent measurements. For the weld core indentation depth after resistance spot welding of steel plates of different thicknesses and strengths, the weld core indentation depth of a single steel plate cannot be measured. Utility Model Content

[0006] In view of the problems existing in an existing indentation depth measuring device, the utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide an indentation depth measuring device, which solves the problem existing in the above-mentioned patent that the measurement is performed by manually holding a vernier caliper, the measurement efficiency is low, and it is restricted by the ability and attitude of the workers, and the measurement accuracy is difficult to guarantee; based on the vernier caliper, an active measuring claw and a measuring head structure thereon are added, which can only measure the total depth of a weld core indentation at a single time, and the depth and position distribution of the entire weld core cannot be measured, and the reference surface cannot be determined for subsequent measurements. For the weld core indentation depth after resistance spot welding of steel plates of different thicknesses and strengths, the weld core indentation depth of a single steel plate cannot be measured.

[0008] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] An indentation depth measuring device comprises a supporting mechanism, wherein a measuring mechanism and a fixing component are transmission-connected to the supporting mechanism;

[0010] The fixing assembly is used to fix the workpiece to be measured, and the measuring mechanism is used to measure the indentation depth of the workpiece to be measured.

[0011] As a preferred solution of the indentation depth measuring device described in the utility model, the supporting mechanism includes a bottom supporting plate, a supporting column is installed on the bottom supporting plate by bolts, a lifting assembly is installed on the supporting column, and the measuring mechanism and the fixing assembly are both installed on the lifting assembly.

[0012] As a preferred solution of the indentation depth measuring device described in the utility model, the lifting assembly includes a servo motor installed on the top of the support column by bolts, the output shaft of the servo motor is connected to a screw through a coupling, and two lifting plates are threadedly connected to the screw, and the measuring mechanism and the fixing assembly are respectively installed on the two lifting plates.

[0013] As a preferred solution of the indentation depth measuring device described in the utility model, wherein: the two lifting plates are respectively set as the first lifting plate and the second lifting plate, the measuring mechanism and the fixing assembly are respectively installed on the first lifting plate and the second lifting plate, and the first lifting plate and the second lifting plate are both fixedly installed with a slider, and the slider is slidably connected to the inner wall of the support column.

[0014] As a preferred solution of the indentation depth measuring device described in the utility model, wherein: the fixing assembly includes a first mounting plate installed on the second lifting plate by bolts, a placement plate is welded on the top of the first mounting plate, a support block is welded on the top of the placement plate, the inner wall of the support block is threadedly connected to a fastening bolt, and one end of the fastening bolt is rotatably connected to the splint through a bearing.

[0015] As a preferred solution of the indentation depth measuring device described in the utility model, wherein: the measuring mechanism includes a second mounting plate installed on the first lifting plate by bolts, a shell is welded on the second mounting plate, a plug-in tube is fixedly installed on the top wall of the inner cavity of the shell, the inner wall of the plug-in tube is slidably connected to a conductive rod, a spring is jointly sleeved on the plug-in tube and the conductive rod, a conductive slip ring is sleeved on the conductive rod, the bottom end of the conductive rod is connected to an ammeter through a wire, the other end of the ammeter is connected to a power supply through a wire, and the other end of the power supply is connected to the conductive slip ring through a wire.

[0016] As a preferred solution of the indentation depth measuring device described in the utility model, wherein: the two ends of the spring are respectively fixedly connected to the top wall of the inner cavity of the shell and the conductive slip ring.

[0017] Compared with existing technologies:

[0018] By setting up a measuring mechanism and using the indication of the ammeter in the circuit to judge the length of the conductive rod connected to the circuit, the depth of the indentation can be indirectly known, thereby quickly measuring the indentation depth. Compared with the measurement method of manual handheld vernier caliper, the measurement error of this method is smaller, and the measurement is more accurate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure provided by the utility model;

[0020] Figure 2 The utility model provides Figure 1 A cross-sectional view of

[0021] Figure 3 An enlarged view of the measuring mechanism provided by the utility model;

[0022] Figure 4 The utility model provides Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is an enlarged view of the fixing assembly provided by the utility model.

[0024] In the figure: support column 1, servo motor 2, first lifting plate 3, second lifting plate 4, measuring mechanism 5, shell 51, second mounting plate 511, spring 52, plug-in tube 53, conductive rod 54, L-shaped groove 541, wire 542, conductive slip ring 55, power supply 56, ammeter 57, fixing assembly 6, placement plate 61, first mounting plate 611, support block 62, fastening bolt 63, clamping plate 64, knob 65, bottom support plate 7, slider 8. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The utility model provides an indentation depth measuring device, please refer to Figure 1-5 , including a supporting mechanism, on which a measuring mechanism 5 and a fixing assembly 6 are drivingly connected;

[0027] The fixing assembly 6 is used to fix the workpiece to be measured, and the measuring mechanism 5 is used to measure the indentation depth of the workpiece to be measured.

[0028] The supporting mechanism comprises a bottom supporting plate 7, a supporting column 1 is mounted on the bottom supporting plate 7 by bolts, a lifting assembly is mounted on the supporting column 1, and the measuring mechanism 5 and the fixing assembly 6 are both mounted on the lifting assembly.

[0029] The lifting assembly includes a servo motor 2 installed on the top of the support column 1 by bolts. The output shaft of the servo motor 2 is connected to a screw rod 9 through a coupling. Two lifting plates are threadedly connected to the screw rod 9. The measuring mechanism 5 and the fixing assembly 6 are respectively installed on the two lifting plates. The thread directions at the upper and lower ends of the screw rod 9 are opposite, so that the lifting directions of the two lifting plates are opposite.

[0030] The two lifting plates are respectively configured as a first lifting plate 3 and a second lifting plate 4, the measuring mechanism 5 and the fixing assembly 6 are respectively installed on the first lifting plate 3 and the second lifting plate 4, and a slider 8 is fixedly installed on the first lifting plate 3 and the second lifting plate 4, and the slider 8 is slidably connected to the inner wall of the support column 1.

[0031] The fixing assembly 6 includes a first mounting plate 611 mounted on the second lifting plate 4 by bolts, a placement plate 61 is welded to the top of the first mounting plate 611, a support block 62 is welded to the top of the placement plate 61, the inner wall of the support block 62 is threadedly connected to a fastening bolt 63, one end of the fastening bolt 63 is rotatably connected to a clamping plate 64 through a bearing, and the other end of the fastening bolt 63 is fixedly connected to a knob 65.

[0032] The measuring mechanism 5 includes a second mounting plate 511 mounted on the first lifting plate 3 by bolts, a shell 51 is welded on the second mounting plate 511, a plug-in tube 53 is fixedly mounted on the top wall of the inner cavity of the shell 51, the inner wall of the plug-in tube 53 is slidably connected to a conductive rod 54, a spring 52 is sleeved on the plug-in tube 53 and the conductive rod 54, an insulating coating is sprayed on the surface of the spring 52, two ends of the spring 52 are respectively fixedly connected to the top wall of the inner cavity of the shell 51 and a conductive slip ring 55, a conductive slip ring 55 is sleeved on the conductive rod 54, and the bottom end of the conductive rod 54 is connected to an ammeter 57 through a wire 542. Specifically, an L-shaped groove 541 is opened on the conductive rod 54, the wire 542 is located in the L-shaped groove 541, and the other end of the ammeter 57 is connected to the conductive rod 54 through the wire connection The power source 56 is connected, and the other end of the power source 56 is connected to the conductive slip ring 55 through a wire. The conductive rod 54 and the conductive slip ring 55 are both made of conductive metal. The bottom of the conductive rod 54, the conductive slip ring 55, the power source 56, the ammeter 57, the wire connecting the power source 56 and the ammeter 57, and the wire connecting the conductive slip ring 55 and the power source 56 form a connected circuit. When the conductive slip ring 55 moves to different heights, the length of the conductive rod 54 connected to the circuit is different, so the current in the circuit is different. At the same time, the wire 542 is a hard copper wire, and the wire connecting the power source 56 and the ammeter 57 is also a hard copper wire, so as to ensure the stability of the power source 56 and the ammeter 57. Of course, the power source 56 and the ammeter 57 can also be installed on the outer wall of the housing 51. Conversely, according to the different currents in the circuit measured by the ammeter 57, the length of the conductive rod 54 connected to the circuit can also be known, so that the distance between the bottom of the conductive slip ring 55 and the bottom of the conductive rod 54 can be known.

[0033] When in use, the workpiece to be measured is placed on the placement plate 61, and the fastening bolt 63 is driven to rotate by the knob 65, so that the workpiece is clamped by the clamping plate 64, and the indentation on the workpiece is located directly below the conductive rod 54, and the servo motor 2 is started to drive the first lifting plate 3 to descend, and the second lifting plate 4 to rise;

[0034] The conductive slip ring 55 contacts the top of the workpiece until the conductive rod 54 contacts the bottom of the indentation on the workpiece. At this time, the current value of the ammeter 57 is recorded, and the length of the bottom of the conductive rod 54 connected to the circuit is obtained according to the circuit value. The length of the bottom of the conductive rod 54 connected to the circuit is the depth of the indentation.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An indentation depth measuring device, comprising a supporting mechanism, characterized in that: The support mechanism is transmission-connected with a measuring mechanism (5) and a fixing component (6); The fixing assembly (6) is used to fix the workpiece to be measured, and the measuring mechanism (5) is used to measure the indentation depth of the workpiece to be measured; The measuring mechanism (5) comprises a second mounting plate (511) mounted on the first lifting plate (3) by means of bolts, a shell (51) being welded on the second mounting plate (511), a plug-in tube (53) being fixedly mounted on the top wall of the inner cavity of the shell (51), the inner wall of the plug-in tube (53) being slidably connected to a conductive rod (54), a spring (52) being sleeved on the plug-in tube (53) and the conductive rod (54), a conductive slip ring (55) being sleeved on the conductive rod (54), the bottom end of the conductive rod (54) being connected to an ammeter (57) via a wire (542), the other end of the ammeter (57) being connected to a power source (56) via a wire, and the other end of the power source (56) being connected to the conductive slip ring (55) via a wire.

2. The indentation depth measuring device according to claim 1, characterized in that: The support mechanism comprises a bottom support plate (7), a support column (1) is mounted on the bottom support plate (7) via bolts, a lifting assembly is mounted on the support column (1), and the measuring mechanism (5) and the fixing assembly (6) are both mounted on the lifting assembly.

3. The indentation depth measuring device according to claim 2, characterized in that: The lifting assembly comprises a servo motor (2) mounted on the top of a support column (1) by means of bolts, the output shaft of the servo motor (2) being connected to a screw rod (9) via a coupling, the screw rod (9) being threadedly connected to two lifting plates, the measuring mechanism (5) and the fixing assembly (6) being respectively mounted on the two lifting plates.

4. The indentation depth measuring device according to claim 3, characterized in that: The two lifting plates are respectively arranged as a first lifting plate (3) and a second lifting plate (4); the measuring mechanism (5) and the fixing assembly (6) are respectively mounted on the first lifting plate (3) and the second lifting plate (4); a slider (8) is fixedly mounted on each of the first lifting plate (3) and the second lifting plate (4); and the slider (8) is slidably connected to the inner wall of the support column (1).

5. The indentation depth measuring device according to claim 1, characterized in that: The fixing assembly (6) comprises a first mounting plate (611) mounted on the second lifting plate (4) by means of bolts, a placement plate (61) is welded to the top end of the first mounting plate (611), a support block (62) is welded to the top end of the placement plate (61), the inner wall of the support block (62) is threadedly connected to a fastening bolt (63), and one end of the fastening bolt (63) is rotatably connected to a clamping plate (64) via a bearing.

6. The indentation depth measuring device according to claim 5, characterized in that: The two ends of the spring (52) are respectively fixedly connected to the top wall of the inner cavity of the housing (51) and the conductive slip ring (55).

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