Workpiece positioning apparatus and method of use thereof

Abstract

The present application relates to the technical field of workpiece production equipment, in particular to a workpiece positioning device and a use method thereof, the workpiece positioning device comprises an inductive switch and a clamping piece, the clamping piece is located at the side edge of the workpiece, the clamping piece comprises a swing arm, a clamping end is arranged in front of the swing arm, a clamping hole is arranged on the end face of the workpiece, the clamping end is opposite to the end face of the workpiece and can be clamped into the clamping hole on the workpiece in rotation, the inductive switch is directed to the swing arm, and the inductive switch stops the workpiece rotating driving equipment according to the swing amplitude of the swing arm, the workpiece positioning device can accurately and stably position the workpiece, improve the workpiece production accuracy, and has the advantages of easy operation, easy maintenance and low cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece production equipment, in particular to a workpiece positioning device and a use method thereof. BACKGROUND

[0002] With the popularization of automatic equipment in workpiece production, the automatic equipment rotates the workpiece and processes the workpiece. During the processing, the workpiece rotation needs to be stopped in time, otherwise over-processing will occur. At present, the workpiece rotation is stopped by the following methods: as shown in the drawings, a mark slot is formed on the workpiece, and a laser switch or a fiber switch is used to judge the workpiece. The workpiece is rotated by external force on the workpiece rotating driving equipment. During the rotation, the laser switch or the fiber switch generates an induction signal after sensing the mark slot, and the equipment stops rotating, thereby stopping the workpiece. However, the laser induction stopping method still has the following disadvantages: a. The workpiece rotation has inertia and time delay, which will cause the workpiece stop position to be unstable, and there is a large error between the actual stop position of the mark slot and the standard stop position, resulting in large laser induction judgment error, so that the workpiece cannot be stopped in time; b. Due to the influence of water mist, oil mist and other external factors, the laser or light appears reflection phenomenon in the water mist or oil mist environment, causing the sensor to misjudge or miss the light, and the judgment is not accurate; c. The laser switch or the fiber switch is not waterproof, and the spare parts and maintenance cost are high. Figure 1 SUMMARY

[0003] One of the purposes of the present application is to avoid the disadvantages in the prior art and provide a workpiece positioning device which can accurately and stably position the workpiece, improve the workpiece production accuracy, and has the advantages of easy operation, easy maintenance and low cost.

[0004] The second purpose of the present application is to provide a use method of the workpiece positioning device.

[0005] To achieve the above-mentioned one of the purposes, the present application provides the following technical scheme:

[0006] A workpiece positioning device is provided, which comprises an induction switch and a clamping piece. The clamping piece is located at the side of the workpiece. The clamping piece comprises a swing arm, and a clamping end is arranged in front of the swing arm. A clamping hole is formed on the end face of the workpiece. The clamping end is arranged to face the end face of the workpiece and can be clamped into the clamping hole on the rotating workpiece. The induction switch is arranged to point to the swing arm. The induction switch can stop the workpiece rotating driving equipment according to the swing amplitude of the swing arm.

[0007] The working principle of the above-mentioned workpiece positioning device is as follows:

[0008] ​The end face of the workpiece is provided with a bayonet, and the clamping end is abutted against the end face of the workpiece; when the workpiece rotates, the clamping end is clamped into the bayonet to position the workpiece rotation, at this time, the swing arm also swings, and the inductive switch stops the workpiece rotation driving device by sensing the swing of the swing arm.

[0009] In some embodiments, the bottom of the clamping piece is provided with a spring, the spring lifts the clamping piece, and the clamping end is continuously in contact with the end face of the workpiece through the spring lifting.

[0010] In some embodiments, the side edge of the workpiece is provided with a base, the base is provided with a mounting groove, the clamping piece and the spring are mounted in the mounting groove, the end of the swing arm extends from the top of the mounting groove, and the end of the clamping end extends from the side of the mounting groove and can be directed to the bayonet.

[0011] In some embodiments, a rotating shaft is arranged in the mounting groove, and the swing arm is mounted on the rotating shaft and can swing around the rotating shaft.

[0012] In some embodiments, a limiting plate is arranged on the top of the mounting groove, and the limiting plate is located in front of the direction in which the swing arm swings to the workpiece.

[0013] In some embodiments, a limiting pin is arranged on the mounting groove, one end of the limiting pin faces the side of the swing arm, and the side of the swing arm faces away from the workpiece.

[0014] In some embodiments, an installation plate is fixed on the base, and the inductive switch is mounted on the base through the installation plate and directed to the swing arm.

[0015] In some embodiments, the workpiece is a cylindrical workpiece, and one end face of the cylindrical workpiece abuts against the base and abuts against the clamping end.

[0016] In some embodiments, the tail of the swing arm is configured as a connecting block, the swing arm is mounted on the rotating shaft through the connecting block, and the spring is arranged at the bottom of the connecting block.

[0017] In some embodiments, the clamping end is configured as a wedge-shaped clamping end.

[0018] The workpiece positioning device has the following advantages:

[0019] (1) The workpiece in rotation is positioned by the mechanical mode of clamping the clamping end and the bayonet, and after the clamping end is clamped into the bayonet, the workpiece will not be offset, and the positioning accuracy is high; at the same time, the inductive switch stops the workpiece rotation driving device according to the swing amplitude of the swing arm, the swing arm can effectively amplify the movement amplitude of the clamping end, improve the distinguishability, and accurately stop the workpiece rotation driving device.

[0020] (2) The present application adopts mechanical positioning of the workpiece, avoids the reflection of water mist and oil mist on laser or light in the prior art, ensures the anti-interference of positioning, and then ensures the stability of workpiece positioning, so that the positioning process will not misjudge, and the stability is higher than 70%.

[0021] (3) The present application stops the workpiece by clamping and closing the workpiece rotating driving device, ensures the positioning accuracy of the workpiece, and avoids the error caused by only using the device to stop the workpiece in the prior art.

[0022] (4) The present application does not need to use laser switch or optical fiber switch to identify the rotating position of the workpiece, and the cost of the inductive switch of the present application is 90% lower than that of the laser switch or optical fiber switch, and the service life is 150% higher.

[0023] (5) The clamping end of the present application can drive the swing arm to produce swing after being clamped into the card hole, and then the workpiece rotating driving device is avoided, which avoids adjusting the position of the laser switch or optical fiber switch for different workpieces in the prior art (otherwise, the laser switch or optical fiber switch deviates too much from the card hole on the workpiece, and cannot sense the card hole), and improves the operation efficiency.

[0024] To achieve the above-mentioned second purpose, the present application provides the following technical solutions:

[0025] A use method of a workpiece positioning device is provided, which adopts the above-mentioned workpiece positioning device, and comprises the following steps,

[0026] S1, a card hole is opened on the end face of the workpiece according to the workpiece rotating stop point; the clamping end is abutted against the end face of the workpiece, and the workpiece is started to rotate;

[0027] S2, the card hole rotates with the workpiece, when the clamping end is aligned with the card hole, the clamping end is clamped into the card hole, the workpiece is stopped, and at the same time, the swing arm swings, and the inductive switch stops the workpiece rotating driving device according to the swing of the swing arm.

[0028] In some embodiments, after S2, the clamping end is pushed away from the card hole, and the workpiece is taken out.

[0029] The use method of the workpiece positioning device of the present application has the following beneficial effects:

[0030] The use method of the workpiece positioning device of the present application can quickly, accurately and conveniently stop the workpiece, and is suitable for large-scale production application. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of a prior art workpiece rotating stopping device.

[0032] Figure 2is a structural schematic view of a workpiece positioning device of an embodiment.

[0033] Figure 3 is a partial sectional view of a clamping piece in a workpiece positioning device of an embodiment.

[0034] Figure 4 is a comparison schematic view of a swing arm of a clamping piece before and after swinging of an embodiment.

[0035] Figure 5 is a working state schematic view of a clamping piece of an embodiment on a workpiece with a diameter of 45 cm.

[0036] Figure 6 is a working state schematic view of a clamping piece of an embodiment on a workpiece with a diameter of 48 cm.

[0037] is a comparison schematic view of a clamping piece of prior art at a height of 45 cm. Figure 7

[0038] is a comparison schematic view of a clamping piece of prior art at a height of 48 cm. Figure 8 Reference signs

[0039] Inductive switch 1; clamping piece 2, swing arm 21, clamping end 22; workpiece 3; clamping hole 4; spring 5; base 6; mounting groove 7; rotating shaft 8; limiting plate 9; limiting nail 10; mounting plate 11; connecting block 12; laser switch 13; device 14.

[0040] DETAILED DESCRIPTION The present application is described in detail below in conjunction with specific embodiments and drawings.

[0041] To facilitate the description of the working principle of the workpiece positioning device of the present application, the following embodiments take a cylindrical workpiece as an example for illustration. In actual applications, the workpiece positioning device is also applicable to workpieces of other shapes.

[0042] Embodiment 1

[0043] The workpiece positioning device disclosed in this embodiment,

[0044] as shown, includes an inductive switch 1 and a clamping piece 2. The clamping piece 2 is located at the side of the workpiece 3. The clamping piece 2 includes a swing arm 21. The swing arm 21 is provided with a clamping end 22 in front. The workpiece 3 is provided with a clamping hole 4 on the end face. The clamping end 22 is directed against the end face of the workpiece 3 and can be clamped into the clamping hole 4 on the workpiece 3 in rotation. The inductive switch 1 is directed towards the swing arm 21. The inductive switch 1 stops the workpiece 3 rotation driving device 14 according to the swing amplitude of the swing arm 21. Figures 2-3

[0045] ​​In the above-mentioned workpiece 3 positioning device, the end face of the workpiece 3 is provided with a bayonet 4, and the clamping end 22 is against the end face of the workpiece 3. When the workpiece 3 rotates, the clamping end 22 is clamped into the bayonet 4 to position the workpiece 3 for rotation. At this time, the swing arm 21 also swings, and the induction switch 1 stops the workpiece 3 from rotating by sensing the swing arm 21. The driving device 14. Figure 4 As shown, when the snap-in end 22 is snapped into the bayonet 4, the snap-in end 22 and the bayonet 4 cooperate with each other in the same angle and different diameters. The sensing point of the induction switch 1 and the swing arm 21 is on the diameter circle of That is, assuming that the clamping end 22 changes by 2 mm, the swing amplitude of the swing arm 21 changes to 6 mm, making the induction intensity of the induction switch 1 stronger, and the induction switch 1 also receives the induction signal. The induction signal of the induction switch 1 is transmitted to the control console, and the external force rotation is immediately stopped to complete the induction positioning (the device 14 for stopping the rotating workpiece 3).

[0046] In addition, when the positioning device of this embodiment is used, when the diameter of the workpiece 3 changes, as shown in FIG. Figures 5-6 As shown, for diameter and diameter When the cylindrical workpiece 3 is clamped, the distance between the clamping end 22 and the bayonet 4 changes, but there is no need to adjust the position of the clamping end 22. The clamping end 22 can be clamped into the bayonet 4 on the workpiece 3, thereby realizing the switching-free operation of workpieces 3 with different diameters.

[0047] However, if Figures 7-8 As shown, when a laser switch 13 or an optical fiber switch is used, when the diameter of the workpiece 3 changes, the upper and lower positions of the laser switch 13 or the optical fiber switch need to be adjusted. The laser switch 13 or the optical fiber switch should be adjusted to a height position of 45CM or a height position of 45CM accordingly to ensure that the laser switch 13 or the optical fiber switch is aligned with the bayonet 4.

[0048] In this embodiment, the movable range of the snap-in end 22 is ±6°, and the movable range of ±6° can also be adjusted according to actual needs.

[0049] In this embodiment, Figure 3 As shown, a spring 5 is provided at the bottom of the clamp 2, and the spring 5 lifts the clamp 2. The clamping end 22 is lifted by the spring 5 so as to continuously contact the end surface of the workpiece 3. The spring 5 lifts the clamp 2 so that the clamping end 22 in the clamp 2 abuts the end surface of the workpiece 3.

[0050] In this embodiment, Figures 2-3As shown, the side of the workpiece 3 is provided with a base 6, the base 6 is provided with a mounting groove 7, the clamping piece 2 and the spring 5 are installed in the mounting groove 7, the end of the swing arm 21 extends from the top of the mounting groove 7, and the end of the clamping end 22 extends from the side of the mounting groove 7 and can point to the clamping hole 4. The mounting groove 7 can limit the position range of the clamping piece 2, so that the structure is more compact, and the base 6 provides an aligned position for the workpiece 3.

[0051] In this embodiment, Figure 3 As shown, the mounting groove 7 is provided with a rotating shaft 8, and the swing arm 21 is installed on the rotating shaft 8 and can swing around the rotating shaft 8. In use, the swing arm 21 rotates around the rotating shaft 8 to realize the swing operation of the swing arm 21.

[0052] In this embodiment, Figures 2-3 As shown, the top of the mounting groove 7 is provided with a limiting plate 9, and the limiting plate 9 is located in front of the direction in which the swing arm 21 swings towards the workpiece 3. The limiting plate 9 is used to limit the swing amplitude of the swing arm 21, so as to avoid that the swing amplitude of the swing arm 21 is too large to affect the clamping of the clamping end 22 into the clamping hole 4.

[0053] In this embodiment, the mounting groove 7 is provided with a limiting pin 10, one end of the limiting pin 10 faces the side of the swing arm 21, and the side of the swing arm 21 faces away from the workpiece 3. The limiting pin 10 is used to limit the amplitude of the swing arm 21 facing away from the workpiece 3, so as to avoid that the swing amplitude of the swing arm 21 is too large to affect the clamping of the clamping end 22 into the clamping hole 4.

[0054] In this embodiment, Figures 2-3 As shown, the base 6 is fixedly provided with a mounting plate 11, and the induction switch 1 is installed on the base 6 through the mounting plate 11 and points to the swing arm 21.

[0055] In this embodiment, Figure 2 As shown, one end face of the cylindrical workpiece 3 abuts against the base 6 and abuts against the clamping end 22. The abutment of the one end face of the cylindrical workpiece 3 against the base 6 can preliminarily limit the positions of the workpiece 3 and the clamping end 22, thereby improving the subsequent clamping accuracy of the clamping end 22.

[0056] In this embodiment, Figure 3 As shown, the tail of the swing arm 21 is configured as a connecting block 12, the swing arm 21 is installed on the rotating shaft 8 through the connecting block 12, and the spring 5 is arranged at the bottom of the connecting block 12. The connecting block 12 provides a position for the installation of the swing arm 21.

[0057] In this embodiment, Figure 3 As shown, the clamping end 22 is provided as a wedge-shaped clamping end 22. The wedge-shaped clamping end 22 can be more conveniently clamped into the clamping hole 4, and can adapt to more sizes of workpieces 3.

[0058] In the embodiment, the inductive switch 1 is a proximity switch.

[0059] Embodiment 2

[0060] The embodiment discloses a method for using the workpiece positioning device, and adopts the workpiece positioning device in the embodiment 1, and the method comprises the following steps,

[0061] S1, according to the workpiece rotation stop point, opening the card hole on the end face of the workpiece; the card end is abutted on the end face of the workpiece, and the workpiece rotation is started;

[0062] S2, the card hole rotates with the workpiece, when the card end is aligned with the card hole, the card end is inserted into the card hole, the workpiece is stopped, at the same time, the swing arm swings, and the inductive switch stops the workpiece rotation driving device according to the swing amplitude of the swing arm.

[0063] In the embodiment, after S2, the card end is pushed away from the card hole, and the workpiece is taken out.

[0064] The method for using the workpiece positioning device is convenient to operate, high in positioning accuracy, and convenient for large-scale production application.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A workpiece positioning apparatus, characterized by: The application relates to a workpiece positioning device which comprises an inductive switch and a clamping piece, the clamping piece is arranged at the side edge of a workpiece, the clamping piece comprises a swing arm, a clamping end is arranged in front of the swing arm, a clamping hole is arranged on the end surface of the workpiece, the clamping end is arranged to abut against the end surface of the workpiece and can be clamped into the clamping hole of the workpiece in rotation, the inductive switch is arranged to point to the swing arm, and the inductive switch can stop the workpiece rotating driving device according to the swing range of the swing arm; a spring is arranged at the bottom of the clamping piece, the spring lifts the clamping piece, and the clamping end is continuously in contact with the end surface of the workpiece by virtue of the lifting of the spring; a base is arranged at the side edge of the workpiece, the base is provided with a mounting groove, a rotating shaft is arranged in the mounting groove, the swing arm is arranged on the rotating shaft and can swing around the rotating shaft; the clamping piece and the spring are arranged in the mounting groove, the end of the swing arm extends from the top of the mounting groove, and the end of the clamping end extends from the side of the mounting groove and can point to the clamping hole; the clamping end is arranged in a wedge shape.

2. The workpiece positioning apparatus of claim 1, wherein: A limiting plate is arranged on the top of the mounting groove and located in the direction in which the swing arm swings towards the workpiece.

3. The workpiece positioning apparatus of claim 2, wherein: A limiting pin is arranged on the mounting groove, and one end of the limiting pin is arranged to face the side surface of the swing arm, and the side surface of the swing arm faces away from the workpiece.

4. The workpiece positioning apparatus of claim 1, wherein: An installation plate is fixed on the base, and the inductive switch is arranged on the base through the installation plate and points to the swing arm.

5. The workpiece positioning apparatus of claim 1, wherein: The workpiece is a cylindrical workpiece, and one end surface of the cylindrical workpiece abuts against the base and abuts against the clamping end.

6. The workpiece positioning apparatus of claim 2, wherein: The tail of the swing arm is arranged in a connecting block, the swing arm is arranged on the rotating shaft through the connecting block, and the spring is arranged at the bottom of the connecting block.

7. The workpiece positioning apparatus of claim 1, wherein: The inductive switch is a proximity switch.

8. A method of using a workpiece positioning apparatus, the method comprising: The workpiece positioning device according to any one of claims 1-7 comprises the following steps, S1: arranging the clamping hole on the end surface of the workpiece according to the workpiece rotating stop point, and abutting the clamping end against the end surface of the workpiece and starting the workpiece rotation; S2: the clamping hole rotates with the workpiece, when the clamping end is aligned with the clamping hole, the clamping end is clamped into the clamping hole, the workpiece stops rotating, and the swing arm swings, and the inductive switch stops the workpiece rotating driving device according to the swing range of the swing arm.

9. The method of using a workpiece positioning apparatus of claim 8, wherein: After S2, the clamping end is pushed away from the clamping hole, and the workpiece is taken out.

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