Device for detecting wall thickness of groove tip of tiny V-shaped groove

Abstract

The utility model relates to a device for detecting the wall thickness of a groove tip of a tiny V-shaped groove. The device is composed of a main body, an adjusting supporting rod, a dial, a long connecting rod, a connecting rod supporting plate, an upper hinge shaft, a lower hinge shaft, an adjustable clamping sleeve, a sewing machine needle, a dial indicator, a three-stage folding supporting rod, an adjustable locking shaft, a workpiece, a supporting rod locking screw, a dial indicator locking screw and a measuring head locking screw. The measuring needle rod of the dial indicator is lifted and put into the detection workpiece, so that the adjustable measuring head is put into the V-shaped groove in the detection workpiece, and the lifted measuring needle rod of the dial indicator is put on the workpiece and the workpiece is swung. The numerical value of the dial indicator is observed, the minimum value of the reading of the dial indicator is the wall thickness value of the groove tip of the V-shaped groove, the operation is simple, and the wall thickness detection of the groove tip of the tiny V-shaped groove can be quickly realized. According to the utility model, the proper adjustable measuring head can be selected according to the shape and angle of the V-shaped groove, thereby realizing rapid replacement and adjustment.

Description

Technical Field

[0001] The utility model belongs to the technical field of V-groove detection, and relates to a device for detecting the wall thickness at the groove tip of a tiny V-groove, and is particularly suitable for detecting the wall thickness at the groove tip of a V-groove with a tiny V-groove bottom as a sharp point on a thin plate punching part. The device can be adjusted according to the thickness of the thin plate punching part and the position of the V-groove, and the angle of the tiny V-groove is less than 40 degrees. Background Art

[0002] At present, the wall thickness detection devices for the depth of the V-groove use high-precision wall thickness gauges and double-pointed digital micrometers. The double-pointed cone angles of the above two general wall thickness detection gauges are both 60°. Because the double-pointed angle is large, it is impossible to measure the V-groove angle less than 40°, and the measuring head is fixed, and it is impossible to adjust and replace the measuring head of different shapes according to the change of the groove type. The measurement is within the specified range and cannot be adjusted in a larger range. For the punched tiny V-grooves, the wall thickness detection at the tip of the small-angle V-groove requires the design and manufacture of a special wall thickness detection device for detection. Utility Model Content

[0003] The utility model provides a device for detecting the wall thickness at the groove tip of a tiny V-groove. The technical problem to be solved is: solving the problem that the wall thickness at the tip of a tiny V-groove or a small-angle V-groove cannot be detected, and by replacing fixed measuring rods at different angles, the wall thickness detection at various angles of V-grooves and special-shaped grooves can be realized, and the measuring range and measuring specifications can be adjusted over a large range.

[0004] In order to solve the above technical problems, the utility model provides a device for detecting the wall thickness at the groove tip of a micro V-groove, which is characterized by comprising a main body (1), an adjusting support rod (2), a dial (3), a slider, a long connecting rod (4), a sewing machine needle (9), a dial indicator (10), an upper connecting rod support plate and a lower connecting rod support plate; the upper connecting rod support plate is respectively hinged to one end of two upper long connecting rods, and the other ends of the two upper long connecting rods are respectively hinged to the upper part of the main body to form a group of upper parallelogram rocker mechanisms; the lower connecting rod support plate is respectively hinged to one end of two lower long connecting rods, and the two lower connecting rods are respectively hinged to one end of the lower connecting rods. The other ends of the lower long connecting rods are respectively hinged to the lower part of the main body to form a group of lower parallelogram rocker mechanisms; the upper long connecting rod at the bottom of the upper parallelogram rocker mechanism and the lower long connecting rod at the top of the lower parallelogram rocker mechanism are each hinged to one end of an adjustment support rod (2), the other ends of the two adjustment support rods (2) are coaxially hinged to the slider, the slider is slidably connected to the dial (3), and the dial (3) is fixed on the main body; the dial indicator (10) is fixed on the upper connecting rod support plate, the sewing machine needle (9) is installed on the lower connecting rod support plate, and the axis of the measuring head and the dial indicator coincide.

[0005] Beneficial effects: The utility model can select a suitable adjustable measuring head according to the groove type and angle of the V-groove to achieve rapid replacement and adjustment. It is necessary to detect the thickness of the thin plate punching part with a V-groove and the position of the V-groove. Quickly adjust the upper hinge rod, the lower hinge rod, the upper measuring rod, and the lower measuring rod to the appropriate position. Make the upper measuring rod and the lower measuring rod in a horizontal position, and ensure that the measuring needle rod of the adjustable measuring head and the dial indicator are perpendicular to each other and the axis coincides. After the measuring needle rod of the dial indicator is pulled up and contacted with the adjustable measuring head for many times, the pointer reading is consistent. After the pointer reading is fixed, turn the dial pointer back to zero. Pull up the measuring needle rod of the dial indicator, put it into the detection workpiece, put the adjustable measuring head into the V-groove on the detection workpiece, put the pulled measuring needle rod of the dial indicator on the workpiece and swing the workpiece. Observe the value of the dial indicator. The minimum value of the dial indicator reading is the wall thickness value at the groove tip of the V-groove. The operation is simple and the wall thickness detection at the groove tip of the tiny V-groove can be quickly realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 Schematic diagram of punching a tiny V-groove workpiece

[0007] Figure 2 Front view and right view of a device for detecting the wall thickness at the tip of a micro V-groove

[0008] Figure 3 Schematic diagram of a device for detecting the wall thickness at the tip of a tiny V-groove when measuring a workpiece

[0009] Figure 4 Schematic diagram of the combination of adjustable sleeve and sewing machine needle

[0010] Figure 5 Main body diagram

[0011] Figure 6 Diagram of dial structure

[0012] Figure 7 Schematic diagram of the trapezoidal slider structure.

[0013] Among them: 1-main body, 2-adjustable support rod, 3-dial, 4-long connecting rod, 5-connecting rod support plate, 6-upper hinge shaft, 7-lower hinge shaft, 8-adjustable sleeve, 9-sewing machine needle, 10-dial indicator, 11-three-level folding support rod, 12-adjustable locking shaft, 13-workpiece, 14-support rod locking screw, 15-dial indicator locking screw, 16-measuring head locking screw, 17-trapezoidal slider DETAILED DESCRIPTION

[0014] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.

[0015] The utility model provides a device for detecting the wall thickness of a micro V-groove at the groove tip, which comprises a main body (1), an adjusting support rod (2), a dial (3), a long connecting rod (4), a connecting rod supporting plate (5), an upper hinge shaft (6), a lower hinge shaft (7), an adjustable sleeve (8), a sewing machine needle (9), a dial indicator (10), a three-stage folding support rod (11), an adjustable locking shaft (12), a support rod locking screw (14), a dial indicator locking screw (15), a measuring head locking screw (16), and a trapezoidal slider (17);

[0016] The connecting rod support plate (5) is divided into an upper connecting rod support plate and a lower connecting rod support plate; the upper connecting rod support plate is hinged to one end of the two upper long connecting rods through an upper hinge shaft (6), and the other ends of the two upper long connecting rods are hinged to the upper part of the main body through the upper hinge shaft (6), forming a set of upper parallelogram rocker mechanisms;

[0017] The lower connecting rod support plate is hinged to one end of the two lower long connecting rods through a lower hinge shaft (7), and the other ends of the two lower long connecting rods are hinged to the lower part of the main body through the lower hinge shaft (7), forming a set of lower parallelogram rocker mechanisms;

[0018] The upper parallelogram rocker mechanism and the lower parallelogram rocker mechanism are vertically symmetrically arranged;

[0019] The upper long connecting rod of the upper parallelogram rocker mechanism and the lower long connecting rod of the lower parallelogram rocker mechanism are respectively hinged to one end of an adjusting support rod (2), and the other ends of the two adjusting support rods (2) are connected through a support rod locking screw (14) and a tin bronze trapezoidal slider (17). When the locking screw (14) is loosened, the trapezoidal slider (17) can slide freely in the groove of the dial (3). When the locking screw (14) is tightened, the trapezoidal slider (17) is in a locked state under the action of a top tightening force.

[0020] The adjustable ferrule (8) is clamped in the fixing hole of the lower connecting rod support plate to ensure the clearance fit of 0.02mm-0.04mm, and the measuring head locking screw (16) is used to achieve adjustment and locking. The sewing machine needle (9) is installed in the adjustable ferrule (8) to ensure the clearance fit of 0.02mm-0.04mm, and the measuring head locking screw (16) is used to deform the opened adjustable ferrule (8) to clamp the sewing machine needle (9).

[0021] The dial gauge (10) is installed in the fixing hole of the upper connecting rod support plate to ensure that the clearance fit is 0.02mm-0.04mm. The dial gauge locking screw (15) is used to adjust and lock. Before measurement, the measuring head on the measuring rod of the dial gauge (10) is lightly in contact with the needle tip of the sewing machine needle (9) to make the compression amount of the measuring rod of the dial gauge (10) 0.3mm-0.5mm. The upper measuring rod and the lower measuring rod are in a horizontal position, and it is ensured that the adjustable measuring head and the measuring needle rod of the dial gauge are perpendicular to each other and the axes coincide.

[0022] The three-stage folding support rod (11) is connected to the platform at the bottom of the main body through an adjustable locking shaft (12); the three-stage folding support rod (11) is connected and fixed by the adjustable locking shaft (12), and is positioned and locked by two locking bolts and the main body (1). When not performing measurement work, the adjustable locking shaft (12) and the two locking bolts on the main body (1) can be loosened, and the three-stage folding support rod (11) can be folded into the groove on the main body (1). The function of the three-stage folding support rod is to adjust the height of the three-stage folding support rod so that the workpiece to be measured is in a horizontal state. When the workpiece is rotated and the wall thickness at the groove tip of multiple tiny V-grooves is detected, the three-stage folding support rod plays an auxiliary supporting role for the measured workpiece, keeps the state of the measured workpiece stable, and improves the accuracy and stability of the measured value.

[0023] According to the thickness of the part and the position of the V-shaped groove on the workpiece, the upper hinge shaft (6), the lower hinge shaft (7) and the support rod locking screw (14) are loosened, and the support rod (2) is moved to control the two parallelogram rocker mechanisms composed of the main body (1), four long connecting rods and two connecting rod support plates to achieve opening or merging, and the dial (3) on the main body (1) is adjusted to the accurate position, and the upper hinge shaft (6), the lower hinge shaft (7) and the support rod locking screw (14) are tightened to ensure the strength and stability of the wall thickness detection device at the groove tip of the V-shaped groove.

[0024] Working process: When measuring a workpiece (13), the three-stage folding support rod (11) is adjusted to an appropriate height, and the adjustable locking shaft (12) is tightened to fix the three-stage folding support rod (11), so as to support the workpiece and improve the accuracy and stability of the measurement.

[0025] Before measuring the workpiece (13), the measuring head on the measuring rod of the dial gauge (10) needs to be lightly contacted with the needle tip of the sewing machine needle (9), so that the compression amount of the measuring rod of the dial gauge (10) is 0.3mm------0.5mm, and the measuring rod of the dial gauge (10) is pulled up several times. After the pointer value of the dial gauge (10) is stable and does not move, the dial of the dial gauge (10) is turned back to zero. The measuring rod of the dial gauge (10) is pulled up, and the workpiece (13) is placed in the wall thickness detection device, and the groove tip of the V-shaped groove of the workpiece (13) is aligned with the needle tip of the sewing machine needle (9), and the measuring rod of the dial gauge (10) is loosened, and the workpiece (13) is slightly swung and adjusted. The value of the pointer of the dial gauge (10) is observed, and the minimum value is the wall thickness value at the groove tip of the V-shaped groove.

[0026] like Figure 1 As shown in the figure, a workpiece with a tiny V-groove is punched. This type of cover part is punched from a 0.3mm thick steel plate. A V-groove with an angle of 40° needs to be punched on the plane of the part cover. The tip of the V-groove is required to be 0.1mm to 0.15mm from the top of the workpiece.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for detecting the wall thickness at the tip of a micro V-groove, characterized in that: The invention comprises a main body (1), an adjustment support rod (2), a dial (3), a slider, a long connecting rod (4), a sewing machine needle (9), a dial indicator (10), an upper connecting rod support plate and a lower connecting rod support plate; the upper connecting rod support plate is respectively hinged to one end of two upper long connecting rods, and the other ends of the two upper long connecting rods are respectively hinged to the upper part of the main body to form a set of upper parallelogram rocker mechanisms; the lower connecting rod support plate is respectively hinged to one end of two lower long connecting rods, and the other ends of the two lower long connecting rods are respectively hinged to the lower part of the main body to form A set of lower parallelogram rocker mechanisms; an upper long connecting rod at the bottom of the upper parallelogram rocker mechanism and a lower long connecting rod at the top of the lower parallelogram rocker mechanism are each hinged to one end of an adjustment support rod (2); the other ends of the two adjustment support rods (2) are coaxially hinged to a slider; the slider is slidably connected to a dial (3); the dial (3) is fixed to the main body; a dial indicator (10) is fixed to the upper connecting rod support plate; a sewing machine needle (9) is mounted on the lower connecting rod support plate; and the axes of the measuring head and the dial indicator coincide.

2. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The dial indicator (10) is installed in the fixing hole of the upper connecting rod supporting plate.

3. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The upper parallelogram rocker mechanism and the lower parallelogram rocker mechanism are symmetrically arranged up and down.

4. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The slide block is a tin bronze trapezoidal slide block.

5. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The other ends of the two adjustment support rods (2) are connected to one side of the slider via a locking screw (14) and the slider, and the slider can slide freely in the groove of the scale plate (3).

6. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 5, characterized in that: The locking screw (14) is used to lock the trapezoidal slider (17) and the scale plate (3).

7. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The sewing machine needle (9) is installed in the adjustable clamping sleeve (8), and the adjustable clamping sleeve (8) is clamped in the fixing hole of the lower connecting rod supporting plate.

8. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 1, characterized in that: The three-stage folding support rod (11) is connected to the platform at the lower part of the main body through an adjustable locking shaft (12) to provide auxiliary support for the measured workpiece.

9. The device for detecting the wall thickness at the tip of a micro V-groove according to claim 8, characterized in that: The three-stage folding support rod (11) is connected and fixed by an adjustable locking shaft (12), and is positioned and locked by two locking bolts and the main body (1).

10. A device for detecting the wall thickness at the tip of a micro V-groove according to any one of claims 1 to 9, characterized in that: Before measurement, the measuring head on the measuring rod of the dial gauge (10) contacts the needle tip of the sewing machine needle (9), so that the compression amount of the measuring rod of the dial gauge (10) is 0.3mm-0.5mm.

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