A clamp-based workpiece positioning control system and method

Abstract

The application discloses a workpiece positioning control system and method based on a clamp, the system is provided with a positioning mechanism fixedly installed in the clamp, and a cylinder is arranged on the positioning mechanism; when the number of clamps required for clamping a workpiece is calculated by a host computer according to the length of the workpiece, the host computer can control the head clamp and the tail clamp of the workpiece, and the stop blocks in the head clamp and the tail clamp are extended to abut against the workpiece under the power provided by the cylinder, so that the number of clamps required for clamping the workpiece can be determined automatically according to the length of the workpiece, manual calculation and determination of the corresponding head clamp and tail clamp are not needed, the actual production needs of abutting against or not abutting against the workpiece are realized automatically, manual installation and dismounting are not needed in the whole process, the manual operation time during workpiece replacement is saved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece positioning, and in particular to a clamp-based workpiece positioning control system and method. Background Art

[0002] In the production of truck frames, CNC punching processes are often required, and CNC punching is generally equipped with multiple clamps to position and clamp the workpiece. When punching, two clamps are required at the head and tail of the workpiece to position the workpiece to ensure that the position of the workpiece is more accurate and the punching accuracy is guaranteed. In the prior art, an iron block is generally used as a positioning block in the clamp, and the positioning block is then manually installed at the position of the clamp mouth. When the positioning block is needed to fix the workpiece, the positioning block needs to be manually installed, and the positioning block is removed when it is not needed. That is, in the prior art, it is necessary to manually select the head and tail clamps to be used according to the length of the workpiece, and then in the selected head and tail clamps, it is also necessary to manually install the positioning blocks on the head and tail clamps. Therefore, when it is necessary to switch the production of workpieces of different lengths, because it is necessary to manually calculate the length of the workpiece and switch the positioning blocks, the operation time is long, resulting in low production efficiency. Summary of the Invention

[0003] The embodiments of the present invention provide a clamp-based workpiece positioning control system and method, which can effectively solve the problem in the prior art that manual calculation of workpiece length and switching of positioning blocks are required, resulting in long operation time and low production efficiency.

[0004] An embodiment of the present invention provides a clamp-based workpiece positioning control system, comprising: a host computer, a plurality of clamps, and a plurality of positioning mechanisms fixedly connected to the clamps;

[0005] The positioning mechanism includes a stopper, a base and a cylinder, and the base includes a cylindrical pin, a rotating shaft and a cylinder seat;

[0006] The positioning mechanism is fixedly connected to the clamp via the cylindrical pin, and the rotating shaft is hinged to the stopper;

[0007] The cylinder seat is used to be installed and connected with the cylinder, and the cylinder is also connected to the stopper, so that the stopper can rotate around the rotating shaft when the cylinder is extended or retracted;

[0008] The host computer is used to obtain the length of the workpiece to be clamped, and calculate the number of clamps required to clamp the workpiece to be clamped according to the length of the workpiece to be clamped and the preset distance between adjacent clamps;

[0009] Determining the head clamp and the tail clamp for clamping the workpiece according to the number of clamps;

[0010] Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece;

[0011] The cylinder of the positioning mechanism corresponding to the tail clamp is controlled to push the corresponding stopper, so that the stopper extends and abuts against the tail of the workpiece.

[0012] Preferably, the positioning mechanism further comprises: a blocking piece;

[0013] The blocking piece is installed above the rotating shaft through a fastener.

[0014] Preferably, the cylindrical pin is provided with a through hole, and the clamp is fixedly connected to the through hole via a fastener.

[0015] Preferably, the stopper is provided with an ear plate, and the ear plate is connected to the joint of the cylinder.

[0016] Preferably, each of the positioning mechanisms further comprises: a solenoid valve; the cylinder is connected to the host computer via the solenoid valve;

[0017] The host computer controls the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper, including:

[0018] The host computer sends a power-on instruction to the solenoid valve corresponding to the head clamp, so that the solenoid valve corresponding to the head clamp is powered on, and controls the cylinder corresponding to the head clamp to push the corresponding stopper.

[0019] Preferably, the host computer controls the cylinder of the positioning mechanism corresponding to the tail clamp to push the corresponding block, including:

[0020] The host computer sends a power-on instruction to the solenoid valve corresponding to the tail clamp, so that the solenoid valve corresponding to the tail clamp is powered on, and controls the cylinder corresponding to the tail clamp to push the corresponding stopper.

[0021] Preferably, the stopper is provided with an arc surface, and the central axis of the arc surface is coaxial with the center line of the rotating shaft; after the stopper is extended, the arc surface of the stopper abuts against the workpiece.

[0022] Preferably, the host computer is also used to send a power-off instruction to the solenoid valves corresponding to the remaining clamps between the head clamp and the tail clamp, so that the solenoid valves corresponding to the remaining clamps are powered off and the blocks of the corresponding positioning mechanisms are controlled to be in a swing-back state.

[0023] Preferably, the host computer calculates the number of clamps required to clamp the workpiece to be clamped according to the length of the workpiece to be clamped and the preset spacing between adjacent clamps, including:

[0024] The number of clamps required to clamp the workpiece is calculated according to the following formula:

[0025]

[0026] Wherein, n is the number of clamps, L is the length of the workpiece to be clamped, and d is the preset distance between adjacent clamps.

[0027] Based on the above-mentioned system embodiment, the present invention provides corresponding method embodiments.

[0028] One embodiment of the present invention provides a clamp-based workpiece positioning control method for controlling a plurality of positioning mechanisms fixedly connected to the clamp; wherein the positioning mechanism includes a stopper, a base, and a cylinder; the base includes a cylindrical pin, a rotating shaft, and a cylinder seat; the positioning mechanism is fixedly connected to the clamp via the cylindrical pin; the rotating shaft is hinged to the stopper; the cylinder seat is used to be mounted and connected to the cylinder, and the cylinder is also connected to the stopper so that the stopper can rotate about the rotating shaft when the cylinder is extended or retracted;

[0029] The workpiece positioning control method comprises:

[0030] Obtaining the length of the workpiece to be clamped, and calculating the number of clamps required to clamp the workpiece to be clamped based on the length of the workpiece to be clamped and a preset spacing between adjacent clamps;

[0031] Determining the head clamp and the tail clamp for clamping the workpiece according to the number of clamps;

[0032] Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece;

[0033] The cylinder of the positioning mechanism corresponding to the tail clamp is controlled to push the corresponding stopper, so that the stopper extends and abuts against the tail of the workpiece.

[0034] The following beneficial effects are achieved by implementing the present invention:

[0035] An embodiment of the present invention provides a workpiece positioning control system and method based on a clamp, wherein the control system is configured such that a positioning mechanism is fixedly installed in the clamp and a cylinder is provided on the positioning mechanism. When the upper computer calculates the number of clamps required for clamping the workpiece according to the current length of the workpiece to be clamped, the upper computer can control the head clamp and the tail clamp of the corresponding workpiece to be clamped, and make the blocks in the head clamp and the tail clamp extend to support the workpiece under the power provided by the cylinder, thereby automatically determining the number of clamps required for clamping the workpiece to be clamped according to the length of the workpiece without the need for manual calculation and determination of the corresponding head clamp and tail clamp. Moreover, the present invention controls the cylinder through the upper computer, which can drive the block to rotate around the rotating shaft, and can automatically meet the actual production needs of supporting or not supporting the workpiece, without the need for manual installation and disassembly during the entire process, saving manual operation time when changing workpieces and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a clamp-based workpiece positioning control system provided by one embodiment of the present invention.

[0037] Figure 2 It is a structural schematic diagram of a positioning mechanism provided by an embodiment of the present invention.

[0038] Figure 3 It is a structural schematic diagram of a base in a positioning mechanism provided by an embodiment of the present invention.

[0039] Figure 4 This is a structural schematic diagram corresponding to when the stopper in the positioning mechanism provided by one embodiment of the present invention is in a swing-back state.

[0040] Figure 5 It is a flow chart of a clamp-based workpiece positioning control method provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] like Figure 1 FIG2 is a schematic structural diagram of a clamp-based workpiece positioning control system according to an embodiment of the present invention. The clamp-based workpiece positioning control system includes a host computer (not shown), a plurality of clamps, and a plurality of positioning mechanisms fixedly connected to the clamps.

[0043] like Figure 2 As shown in the structural diagram of the positioning mechanism, the positioning mechanism includes a stopper 1, a base 2, a stopper 3 and a cylinder 4, as shown in FIG. Figure 3 As shown in the schematic diagram of the base structure, the base 2 includes a cylindrical pin 21, a rotating shaft 22 and a cylinder seat 23;

[0044] The cylindrical pin 21 is used to position and fix the clamp, and a through hole is provided next to it for inserting a fastener; the clamp is fixedly connected to the through hole by a fastener, such as a screw, so that the positioning mechanism is fixedly connected to the clamp through the cylindrical pin;

[0045] The stopper 1 is used to position the workpiece and is provided with a lug plate, which is connected to the joint of the cylinder 4. In a preferred embodiment, the Y-shaped joint of the cylinder 4 is connected to the lug plate.

[0046] Furthermore, the cylinder seat 23 is used to be mounted and connected to the cylinder 4, and the cylinder 4 is also connected to the stopper 1. The rotating shaft 22 is hinged to the stopper 1 so that the cylinder 4 can cause the stopper 1 to rotate around the rotating shaft 22 when the cylinder 4 is extended or retracted.

[0047] In a preferred embodiment, the stopper 1 is provided with an arc surface, and the central axis of the arc surface is coaxial with the center line of the rotating shaft 22, which can ensure that when the arc surface is subjected to pressure, the direction of the pressure passes through the center line of the rotating shaft, so that the stopper 1 will not rotate around the rotation center of the rotating shaft 22 due to the pressure. After the power provided by the cylinder 4 pushes the stopper 1 to extend, the arc surface of the stopper presses against the workpiece, that is, the plate edge of the workpiece is against the arc surface of the stopper 1, so as to complete the fixation and positioning of the workpiece.

[0048] The baffle 3 of the positioning mechanism is installed above the rotating shaft 22 through a fastener. The baffle 3 is mainly used to prevent the block 1 from moving too much in the vertical direction, so that the block can be more firmly against the workpiece.

[0049] In a preferred embodiment, the host computer is used to obtain the length of the workpiece to be clamped, and calculate the number of clamps required to clamp the workpiece to be clamped according to the length of the workpiece to be clamped and the preset spacing between adjacent clamps;

[0050] Then, the head clamp and the tail clamp of the workpiece to be clamped are determined according to the number of clamps;

[0051] Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece;

[0052] The cylinder of the positioning mechanism corresponding to the tail clamp is controlled to push the corresponding stopper, so that the stopper extends and abuts against the tail of the workpiece.

[0053] Specifically, this embodiment also includes: each of the positioning mechanisms also includes: a solenoid valve (not shown in the figure), and the cylinder 4 is connected to the host computer (not shown in the figure) through the solenoid valve; each cylinder 4 corresponds to a two-position four-way solenoid valve (not shown in the figure). When the solenoid valve is energized, the corresponding cylinder 4 extends, and the block 1 is in an extended state. When the solenoid valve is de-energized, the corresponding cylinder 4 contracts, and the block 1 is in a swing-back state.

[0054] When the upper computer controls the cylinder 4 of the positioning mechanism corresponding to the head clamp to push the corresponding block, it sends a power-on command to the solenoid valve corresponding to the head clamp to power on the solenoid valve corresponding to the head clamp, and controls the cylinder 4 corresponding to the head clamp to push the corresponding block 1 to rotate. At this time, the block 1 extends and presses against the workpiece.

[0055] It is clear that the host computer controls the cylinder 4 of the positioning mechanism corresponding to the tail clamp to push the corresponding block, including:

[0056] The host computer sends a power-on command to the solenoid valve corresponding to the tail clamp to power on the solenoid valve corresponding to the tail clamp, and controls the cylinder 4 corresponding to the tail clamp to push the corresponding stopper 1 to rotate. At this time, the stopper 1 extends and presses against the workpiece.

[0057] In a preferred embodiment, the host computer is further used to send a power-off instruction to the solenoid valves corresponding to the remaining clamps between the head clamp and the tail clamp, so that the solenoid valves corresponding to the remaining clamps are powered off, and the cylinder is controlled to contract, so that the stopper 1 of the corresponding positioning mechanism is in a swing-back state. The corresponding structural diagram when the stopper 1 is in the swing-back state is as shown in FIG. Figure 4 As shown, at this time, the remaining clamps only play a clamping role and do not play a positioning role, and the stopper 1 does not contact or position the workpiece at this time.

[0058] In a preferred embodiment, the host computer calculates the number of clamps required to clamp the workpiece according to the length of the workpiece to be clamped and the preset spacing between adjacent clamps, including:

[0059] The number of clamps required to clamp the workpiece is calculated according to the following formula:

[0060]

[0061] Wherein, n is the number of clamps, L is the length of the workpiece to be clamped, and d is the preset distance between adjacent clamps.

[0062] Specifically, the upper layer reads the length parameter L of the workpiece to be processed, and according to the formula The calculation result is rounded down according to the rule of rounding down, and the integer n of the result is taken as the number of clamps required to clamp the workpiece.

[0063] In a preferred embodiment, each clamp in the system of the present invention has a corresponding serial number. When the number of clamps is n, the clamps with serial numbers 1 to n are selected as working clamps, and the clamp with serial number 1 is used as the head clamp, and the clamp with serial number n is used as the tail clamp. The cylinders corresponding to the head clamp with serial number 1 and the tail clamp with serial number n are extended, and the arc surface of the block thereof faces the direction of the workpiece to support the workpiece; the blocks of the positioning mechanisms of the remaining clamps between serial numbers 1 to n do not move. At this time, the upper computer can send a power-off instruction to the solenoid valves of the remaining clamps between serial numbers 1 to n, so that the corresponding cylinders are not powered, and the cylinders do not extend, that is, block 1 is in a swing-back state, as shown in FIG. Figure 4 As shown, the stopper 1 is prevented from interfering with and contacting the workpiece.

[0064] The clamp-based workpiece positioning control system of the present invention has the function of automatically selecting the working clamp according to the length of the workpiece, and the positioning mechanism that can be automatically controlled, thereby realizing the automation of workpiece clamping. The present invention controls the cylinder through the host computer, which can drive the block to rotate around the rotating shaft. The actual production needs of whether to support or not support the workpiece can be completed automatically, and no manual installation and disassembly are required throughout the process, saving manual operation time when changing parts of the workpiece and effectively improving production efficiency. Moreover, by accurately calculating the number of clamps, the corresponding head clamp and tail clamp are obtained for clamping the workpiece, which better ensures the accuracy of the workpiece position and guarantees the punching accuracy.

[0065] like Figure 5 As shown, based on the above-mentioned various embodiments of the workpiece positioning control system based on the clamp, the present invention provides corresponding method embodiments;

[0066] One embodiment of the present invention provides a clamp-based workpiece positioning control method for controlling a plurality of positioning mechanisms fixedly connected to the clamp; wherein the positioning mechanism includes a stopper, a base, and a cylinder; the base includes a cylindrical pin, a rotating shaft, and a cylinder seat; the positioning mechanism is fixedly connected to the clamp via the cylindrical pin; the rotating shaft is hinged to the stopper; the cylinder seat is used to be mounted and connected to the cylinder, and the cylinder is also connected to the stopper so that the stopper can rotate about the rotating shaft when the cylinder is extended or retracted;

[0067] The workpiece positioning control method comprises:

[0068] Obtaining the length of the workpiece to be clamped, and calculating the number of clamps required to clamp the workpiece to be clamped based on the length of the workpiece to be clamped and a preset spacing between adjacent clamps;

[0069] Determining the head clamp and the tail clamp for clamping the workpiece according to the number of clamps;

[0070] Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece;

[0071] The cylinder of the positioning mechanism corresponding to the tail clamp is controlled to push the corresponding stopper, so that the stopper extends and abuts against the tail of the workpiece.

[0072] Those skilled in the art can clearly understand that, for the sake of convenience and brevity, the specific working process of the method described above can refer to the corresponding process in the aforementioned system embodiment, and will not be repeated here.

[0073] The above is 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 principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A workpiece positioning control system based on a clamp, characterized in that: include: A host computer, a plurality of clamps, and a plurality of positioning mechanisms fixedly connected to the clamps; The positioning mechanism includes a stopper, a base and a cylinder, and the base includes a cylindrical pin, a rotating shaft and a cylinder seat; The positioning mechanism is fixedly connected to the clamp via the cylindrical pin, and the rotating shaft is hinged to the stopper; The cylinder seat is used to be installed and connected with the cylinder, and the cylinder is also connected to the stopper, so that the stopper can rotate around the rotating shaft when the cylinder is extended or retracted; The host computer is used to obtain the length of the workpiece to be clamped, and calculate the number of clamps required to clamp the workpiece to be clamped according to the length of the workpiece to be clamped and the preset distance between adjacent clamps; Determining the head clamp and the tail clamp for clamping the workpiece according to the number of clamps; Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece; Controlling the cylinder of the positioning mechanism corresponding to the tail clamp to push the corresponding stopper so that the stopper extends and abuts against the tail of the workpiece; The stopper is provided with an arc surface, and the central axis of the arc surface is coaxial with the center line of the rotating shaft; after the stopper is extended, the arc surface of the stopper abuts against the workpiece.

2. A clamp-based workpiece positioning control system according to claim 1, characterized in that: The positioning mechanism further includes: a blocking piece; The blocking piece is installed above the rotating shaft through a fastener.

3. A clamp-based workpiece positioning control system according to claim 1, characterized in that: The cylindrical pin is provided with a through hole, and the clamp is fixedly connected to the through hole via a fastener.

4. A clamp-based workpiece positioning control system according to claim 1, characterized in that: The stopper is provided with an ear plate, and the ear plate is connected to the joint of the cylinder.

5. A clamp-based workpiece positioning control system according to claim 1, characterized in that: Each of the positioning mechanisms further includes: a solenoid valve; the cylinder is connected to the host computer via the solenoid valve; The host computer controls the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper, including: The host computer sends a power-on instruction to the solenoid valve corresponding to the head clamp, so that the solenoid valve corresponding to the head clamp is powered on, and controls the cylinder corresponding to the head clamp to push the corresponding stopper.

6. A clamp-based workpiece positioning control system according to claim 5, characterized in that: The host computer controls the cylinder of the positioning mechanism corresponding to the tail clamp to push the corresponding stopper, including: The host computer sends a power-on instruction to the solenoid valve corresponding to the tail clamp, so that the solenoid valve corresponding to the tail clamp is powered on, and controls the cylinder corresponding to the tail clamp to push the corresponding stopper.

7. A clamp-based workpiece positioning control system according to claim 5, characterized in that: The host computer is also used to send a power-off instruction to the solenoid valves corresponding to the remaining clamps between the head clamp and the tail clamp, so that the solenoid valves corresponding to the remaining clamps are powered off and the stops of the corresponding positioning mechanisms are controlled to be in a swing-back state.

8. The clamp-based workpiece positioning control system according to claim 1, characterized in that: The host computer calculates the number of clamps required to clamp the workpiece according to the length of the workpiece to be clamped and the preset spacing between adjacent clamps, including: The number of clamps required to clamp the workpiece is calculated according to the following formula: Wherein, n is the number of clamps, L is the length of the workpiece to be clamped, and d is the preset distance between adjacent clamps.

9. A workpiece positioning control method based on a clamp, characterized in that: Used to control a number of positioning mechanisms fixedly connected to the clamp; wherein the positioning mechanism includes a stopper, a base and a cylinder, the base includes a cylindrical pin, a rotating shaft and a cylinder seat, the positioning mechanism is fixedly connected to the clamp via the cylindrical pin, and the rotating shaft is hinged to the stopper; the cylinder seat is used for installation connection with the cylinder, and the cylinder is also connected to the stopper so that the stopper can rotate around the rotating shaft when the cylinder is extended or retracted; wherein the stopper is provided with an arc surface, the center axis of the arc surface is coaxial with the center line of the rotating shaft; after the stopper is extended, the arc surface of the stopper presses against the workpiece; The workpiece positioning control method comprises: Obtaining the length of the workpiece to be clamped, and calculating the number of clamps required to clamp the workpiece to be clamped based on the length of the workpiece to be clamped and a preset spacing between adjacent clamps; Determining the head clamp and the tail clamp for clamping the workpiece according to the number of clamps; Controlling the cylinder of the positioning mechanism corresponding to the head clamp to push the corresponding stopper so that the stopper extends and abuts against the head of the workpiece; The cylinder of the positioning mechanism corresponding to the tail clamp is controlled to push the corresponding stopper, so that the stopper extends and abuts against the tail of the workpiece.

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