Workpiece positioning device

Abstract

The utility model provides a workpiece positioning device. The workpiece positioning device comprises a driving assembly, a positioning assembly, a detection assembly and a control assembly. The driving assembly comprises a rotatable mounting plate and a rotation adjusting unit which is arranged at the bottom of the mounting plate and used for adjusting the rotation angle of the mounting plate. The positioning assembly comprises a bottom plate and a pressing block, a pressing block hole corresponding to the pressing block is formed in the mounting plate, the size of the pressing block hole is larger than that of the pressing block, and the pressing block can movably penetrate through the pressing block hole relative to the mounting plate and is used for clamping a workpiece; the detection assembly is used for detecting the rotation angle of the mounting plate and is in communication connection with the control assembly, and the control assembly is further in transmission connection with the rotation adjusting unit. The workpiece positioning device provided by the utility model comprises the rotation adjusting unit which is used for improving the rotation precision of the edge of the workpiece, is provided with the probe for detecting the rotation angle, is suitable for all high-precision machining, does not need manual correction, is simple to operate and saves manpower.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a workpiece positioning device. Background Art

[0002] The industrial rotary table is an important equipment in industrial production with multiple functions and application scenarios. Its main function is to realize the precise rotation and positioning of workpieces or products in the production process. Traditional processing requires manual placement of the workpiece on the workbench and the use of a micrometer to calibrate the level, which consumes manpower and machine clamping time. The C-axis accuracy of the equipment cannot meet the requirements of large workpieces and high precision; because the traditional rotation method is to drive the rotation with the rotating axis as the center, the larger the workpiece, the farther the edge of the workpiece is from the rotation center, the greater the rotation error will be, and the workpiece accuracy requirements cannot be met.

[0003] The utility model proposes a solution to the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a workpiece positioning device, including a rotation adjustment unit, which is used to improve the rotation accuracy of the workpiece edge, and is provided with a probe to detect the rotation angle. It is suitable for all high-precision processing, does not require manual correction, is simple to operate, and saves manpower.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] The utility model provides a workpiece positioning device for accurately positioning a workpiece on a workbench, the workpiece positioning device comprising a driving component, a positioning component, a detection component and a control component; the driving component comprises a rotatable mounting plate, and a rotation adjustment unit installed at the bottom of the mounting plate for adjusting the rotation angle of the mounting plate; the positioning component comprises a base plate and a pressure block for being fixed on the workbench, the mounting plate is provided with a pressure block hole corresponding to the pressure block, the size of the pressure block hole is larger than the size of the pressure block, the pressure block can be movably inserted in the pressure block hole relative to the mounting plate, and is used for clamping the workpiece; the detection component is used for detecting the rotation angle of the mounting plate, and is communicatively connected with the control component, the control component is also transmission-connected with the rotation adjustment unit, and is used for controlling the rotation adjustment unit to adjust the rotation angle of the mounting plate according to the rotation angle of the mounting plate detected by the detection component.

[0007] In this embodiment, the rotation adjustment unit includes a guide rail installed on the base plate, a guide block connected to the mounting plate and slidably installed on the guide rail, and a servo motor drivingly connected to the guide block.

[0008] In this embodiment, the driving assembly further includes a rotating mechanism mounted on the workbench, and the rotating mechanism includes a rotating shaft passing through the mounting plate for driving the mounting plate to rotate, and a cross roller bearing sleeved on the rotating shaft.

[0009] In this embodiment, the pressure block includes a first pressure block installed at the corner of the bottom plate and a second pressure block passed through a bottom plate hole opened in the middle of the bottom plate; the pressure block hole includes a first pressure block hole for the first pressure block to pass through and a second pressure block hole for the second pressure block to pass through.

[0010] In this embodiment, the positioning assembly further includes positioning pins installed on the mounting plate for positioning the workpiece. The number of the positioning pins is at least three and the positioning pins are installed in the middle of the mounting plate relative to the pressing block.

[0011] In this embodiment, the positioning assembly further comprises a dust-proof cover plate detachably mounted on the mounting plate, and a cover plate hole for the pressing block to pass through is formed on the cover plate.

[0012] In this embodiment, the positioning assembly further comprises a carrier plate mounted on the cover plate for carrying the workpiece, and a positioning hole for the positioning pin to pass through is formed on the carrier plate.

[0013] In this embodiment, the positioning assembly further includes a fixing ring for sleeved on the positioning pin to fix the carrier plate.

[0014] In this embodiment, the detection assembly includes a probe installed on the base plate for detecting the rotation angle of the mounting plate.

[0015] In this embodiment, the control component includes a processor communicatively connected to the probe and a PLC module communicatively connected to the processor for controlling the rotation of the mounting plate, and the PLC module is communicatively connected to the rotation adjustment unit.

[0016] Beneficial effects of the utility model:

[0017] The workpiece positioning device provided by the utility model is equipped with a rotation adjustment unit. The larger the workpiece, the farther the edge of the workpiece is from the rotation center, the greater the error, and the workpiece accuracy requirement cannot be met. In the device, the rotation center of the mounting plate and the rotation adjustment unit are respectively mounted on both ends of the mounting plate, and a probe is installed to automatically measure the deviation angle. The mounting plate starts to rotate with the rotation center, the probe detects the rotation angle, and the rotation adjustment unit adjusts the angular deviation of the workpiece edge, which saves manpower and reduces the phenomenon that the accuracy decreases due to the increase in distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a workpiece positioning device provided in one embodiment of the utility model.

[0020] Figure 2 for Figure 1 A schematic structural diagram of the mounting plate in the workpiece positioning device shown.

[0021] Figure 3 for Figure 1 A schematic structural diagram of a base plate and a pressing block in a workpiece positioning device is shown.

[0022] In the figure: 1, base plate; 2, mounting plate; 3, rotation adjustment unit; 31, servo motor; 32, guide rail; 33, guide block; 4, pressure block; 41, first pressure block; 42, second pressure block; 5, cover plate; 6, carrier plate; 7, workpiece; 8, positioning pin; 81, fixing ring; 9, rotating mechanism; 91, rotating shaft; 92, cross roller bearing. DETAILED DESCRIPTION

[0023] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the workpieces of the utility model are usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0026] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0027] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, an embodiment of the utility model provides a workpiece positioning device for accurately positioning a workpiece 7 on a workbench. The workpiece positioning device includes a driving assembly and a positioning assembly. The positioning assembly includes a base plate. The driving assembly includes a rotatable mounting plate 2 and a rotation adjustment unit 3 installed at the bottom of the mounting plate 2 for adjusting the rotation angle of the mounting plate 2.

[0029] Specifically, in this embodiment, the rotation adjustment unit 3 includes a guide rail 32 installed on the base plate 1, a guide block 33 connected to the mounting plate 2 and slidably installed on the guide rail 32, and a servo motor 31 transmission-connected to the guide block 33. The guide block 33 is fixedly connected to the bottom of the mounting plate 2 and is used to drive the mounting plate 2 to move on the guide rail 32. The guide rail 32 is fixed at one end of the base plate 1, and the servo motor 31 is installed on one side of the guide rail 32 and is used to drive the guide block 33 to drive the mounting plate 2 to move.

[0030] Specifically, in this embodiment, the driving assembly also includes a rotating mechanism 9 installed on the workbench, and a semicircular through hole is also opened on the base plate 1 for the rotating mechanism 9 to pass through. The rotating mechanism 9 includes a rotating shaft 91 that drives the mounting plate 2 to rotate and a cross roller bearing 92 mounted on the rotating shaft 91 for improving the rotation accuracy. The mounting plate 2 is provided with a mounting hole for the rotating shaft 91 and the cross roller bearing 92 to pass through. There are multiple mounting holes for the cross roller bearing 92 to pass through, and they are symmetrically arranged relative to the mounting holes of the rotating shaft 91.

[0031] Specifically, in this embodiment, the rotating mechanism 9 and the rotating adjustment unit 3 are respectively installed on both sides of the bottom of the mounting plate 2. The cross roller bearing 92 in the rotating mechanism 9 is used to bear the gravity of the workpiece 7. The rotating shaft 91 is the rotation center that drives the mounting plate 2 to rotate. In the rotating adjustment unit 3, the guide rail 32 is used to bear the gravity of the workpiece 7 and guide the driving direction.

[0032] Specifically, in this embodiment, the positioning assembly also includes a pressure block 4 for fixing the workpiece. A pressure block hole corresponding to the pressure block 4 is opened on the mounting plate 2. The size of the pressure block hole is larger than the size of the pressure block 4. The pressure block 4 can be movably inserted into the pressure block hole relative to the mounting plate 2 to clamp the workpiece 7.

[0033] Specifically, in the present embodiment, the base plate 1 is a fixed plate, which is laid on a workbench. A plurality of base plate holes are opened on the base plate 1, and the pressure block 4 is installed on the workbench through the base plate holes. The pressure block 4 includes a first pressure block 41 installed at a corner end of the base plate 1 and a second pressure block 42 passing through the base plate hole opened in the middle of the base plate 1. The pressure block holes include a first pressure block hole for the first pressure block 41 to pass through and a second pressure block hole for the second pressure block 42 to pass through.

[0034] Specifically, in the present embodiment, at least two first pressing blocks 41 and at least two second pressing blocks 42 are provided. The two first pressing blocks 41 are installed on the workbench through the bottom plate holes opened at the ends of the bottom plate 1, and the two second pressing blocks 42 are installed on the workbench through the bottom plate holes opened in the middle of the bottom plate 1. The pressing block holes include a first pressing block hole for the first pressing block 41 to pass through and a second pressing block hole for the second pressing block 42 to pass through.

[0035] Specifically, in this embodiment, the positioning assembly also includes a positioning pin 8 installed on the mounting plate 2 for positioning the workpiece 7. The number of the positioning pins 8 is at least three, and they are installed in the middle of the mounting plate 2 relative to the pressure block 4. The specific shape of the positioning pin 8 is a combination of a cylinder and a cone. The positioning pin 8 is used for roughly positioning the carrier plate 6.

[0036] Specifically, in this embodiment, the positioning assembly further comprises a dustproof cover plate 5 detachably mounted on the mounting plate 2 , and the cover plate 5 is provided with a cover plate hole for the pressing block 4 to pass through and a positioning hole for the positioning pin 8 to pass through.

[0037] Specifically, in this embodiment, the positioning assembly also includes a carrier plate 6 installed on the cover plate 5 for carrying the workpiece 7. The carrier plate 6 is detachably laid on the cover plate 5. A positioning hole for the positioning pin 8 to pass through is opened on the carrier plate 6, and the side of the carrier plate 6 is fixed by a plurality of pressure blocks 4, so that the carrier plate 6 rotates and moves together with the mounting plate 2.

[0038] Specifically, in this embodiment, when the carrier plate 6 is laid on the cover plate 5 , a fixing ring 81 is sleeved on the positioning pin 8 to fix the carrier plate 6 on the mounting plate 2 .

[0039] The workpiece positioning device also includes a detection component and a control component. The detection component is used to detect the rotation angle of the mounting plate 2 and is communicated with the control component. The control component is also transmission-connected to the rotation adjustment unit 3 and is used to control the rotation adjustment unit 3 to adjust the rotation angle of the mounting plate 2 according to the rotation angle of the mounting plate 2 of the detection component.

[0040] Specifically, in this embodiment, the detection component includes a probe installed on the base plate 1 for detecting the rotation angle of the mounting plate 2, the control component includes a processor communicatively connected to the probe and a PLC module communicatively connected to the processor for controlling the rotation of the mounting plate 2, and the PLC module is communicatively connected to the rotation adjustment unit 3.

[0041] Specifically, in this embodiment, the probe detects the rotation angle of the mounting plate 2 and transmits the detection report to the processor. The processor converts the data into instructions and transmits them to the PLC module. The PLC module starts the servo motor 31 according to the instructions to make the guide rail 32 drive the mounting plate 2 to rotate, and the probe continues to automatically check the rotation accuracy.

[0042] Specifically, in this embodiment, the base plate 1 is laid on the workbench, the first pressing block 41 passes through the end of the base plate 1 and is fixed on the workbench, the second pressing block 42 passes through the base plate hole opened on the base plate 1 and is fixed on the workbench, the rotating mechanism 9 is installed on the workbench and is close to the middle of the base plate 1 relative to the first pressing block 41, a semicircular through hole for placing the rotating mechanism 9 is opened on the base plate 1, the rotating shaft 91 in the rotating mechanism 9 is passed through the mounting plate 2, the rotation adjustment unit 3 is arranged at a section of the base plate 1 and away from the rotating mechanism 9, and is used to adjust the edge rotation angle of the workpiece, the mounting plate 2 is installed above the rotation adjustment unit 3 and the rotating mechanism 9, the cover plate 5 is placed above the mounting plate 2 for dust prevention, the carrier plate 6 and the workpiece are installed on the cover plate 5, the pressing block 4 passes through the mounting plate 2 and the cover plate 5 to fix the carrier plate 6, so that the workpiece and the mounting plate 2 rotate together with the rotation adjustment unit 3.

[0043] The specific workflow of the above workpiece positioning device may include the following operations:

[0044] Step 1: The staff manually presets the workpiece 7 and the carrier plate 6 outside the machine, and the accuracy only needs to be guaranteed within 1 mm.

[0045] Step 2: Place the carrier plate 6 and the workpiece 7 on the cover plate 5 by using an AGV forklift.

[0046] Step three: fix the carrier plate 6 by the pressing block 4 and insert the fixing ring 81 onto the positioning pin 8 .

[0047] Step 4: The probe measures the rotation angle of the workpiece 7 and transmits the detection report to the processor.

[0048] Step 5: The processor converts the detection data into instructions and transmits them to the PLC module.

[0049] Step 6: The PLC module starts the servo motor 31 , and the guide block 33 moves on the guide rail 32 , driving the mounting plate 2 to rotate relative to the rotating shaft 91 .

[0050] Step 7: The workpiece 7 rotates with the mounting plate 2, and the probe continues to detect the rotation accuracy, realizing fully automated control without human operation.

[0051] The workpiece positioning device provided by the utility model is equipped with a rotation adjustment unit 3. As the larger the workpiece, the farther the edge of the workpiece is from the rotation center, the greater the error, and the workpiece accuracy requirement cannot be met. In the device, the rotation center of the mounting plate 2 and the rotation adjustment unit 3 are respectively mounted at both ends of the mounting plate 2, and a probe is installed to automatically measure the deviation angle. The mounting plate 2 starts to rotate with the rotation center, the probe detects the rotation angle, and the rotation adjustment unit 3 adjusts the angular deviation of the workpiece edge, thereby improving the utilization rate of the equipment, saving manpower, and reducing the phenomenon that the accuracy decreases due to the increase in distance.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] In this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, and may include other elements not explicitly listed in addition to those listed. The above description is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A workpiece positioning device, used for accurately positioning a workpiece on a workbench, characterized in that: The workpiece positioning device includes a driving component, a positioning component, a detection component and a control component; the driving component includes a rotatable mounting plate and a rotation adjustment unit installed at the bottom of the mounting plate for adjusting the rotation angle of the mounting plate; the positioning component includes a base plate and a pressure block for fixing on the workbench, the mounting plate is provided with a pressure block hole corresponding to the pressure block, the size of the pressure block hole is larger than the size of the pressure block, the pressure block can be movably inserted into the pressure block hole relative to the mounting plate, and is used to clamp the workpiece; the detection component is used to detect the rotation angle of the mounting plate, and is communicated with the control component, and the control component is also transmission-connected with the rotation adjustment unit, and is used to control the rotation adjustment unit to adjust the rotation angle of the mounting plate according to the rotation angle of the mounting plate detected by the detection component.

2. The workpiece positioning device according to claim 1, characterized in that: The rotation adjustment unit comprises a guide rail mounted on the bottom plate, a guide block connected to the mounting plate and slidably mounted on the guide rail, and a servo motor drivingly connected to the guide block.

3. The workpiece positioning device according to claim 1, characterized in that: The driving assembly also includes a rotating mechanism installed on the workbench, and the rotating mechanism includes a rotating shaft penetrating the mounting plate for driving the mounting plate to rotate and a cross roller bearing sleeved on the rotating shaft.

4. The workpiece positioning device according to claim 1, characterized in that: The pressing block includes a first pressing block installed at the corner of the bottom plate and a second pressing block inserted into a bottom plate hole opened in the middle of the bottom plate; the pressing block hole includes a first pressing block hole for the first pressing block to pass through and a second pressing block hole for the second pressing block to pass through.

5. The workpiece positioning device according to claim 1, characterized in that: The positioning assembly also includes positioning pins installed on the mounting plate for positioning the workpiece. The number of the positioning pins is at least three and the positioning pins are installed in the middle of the mounting plate relative to the pressing block.

6. The workpiece positioning device according to claim 5, characterized in that: The positioning assembly also includes a dust-proof cover plate detachably mounted on the mounting plate, and a cover plate hole for the pressing block to pass through is formed on the cover plate.

7. The workpiece positioning device according to claim 6, characterized in that: The positioning assembly also includes a carrier plate installed on the cover plate for carrying the workpiece, and a positioning hole for the positioning pin to pass through is formed on the carrier plate.

8. The workpiece positioning device according to claim 7, characterized in that: The positioning assembly also includes a fixing ring for sleeved on the positioning pin to fix the carrier plate.

9. The workpiece positioning device according to claim 1, characterized in that: The detection assembly includes a probe mounted on the base plate and used for detecting the rotation angle of the mounting plate.

10. The workpiece positioning device according to claim 9, characterized in that: The control component includes a processor connected to the probe for communication and a PLC module connected to the processor for controlling the rotation of the mounting plate, wherein the PLC module is connected to the rotation adjustment unit for communication.

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