Positioning tooling for electromechanical processing and positioning method thereof

Abstract

The present invention relates to the technical field of positioning tooling, specifically a positioning tooling for electromechanical processing and a positioning method thereof, comprising a fixed seat with a hollow interior, a mounting plate provided between the side walls of the inner cavity of the fixed seat, a cylinder installed at the center of the bottom of the inner cavity of the fixed seat, the output end of the cylinder passes through the mounting plate and is fixedly connected to a square rod, the side walls around the square rod are provided with a first rack along the length direction, and four groups of positioning mechanisms corresponding to the four groups of first racks are installed on the top of the mounting plate. The present invention starts the cylinder to drive the square rod and the first rack to descend, thereby driving the four groups of first positioning posts to slide respectively, so as to clamp and fix the processing workpiece, and a locking assembly is provided in the first positioning post, so that when the first positioning post of the group contacts the processing workpiece, the locking assembly can be triggered to loosen the second rack in the first positioning post, thereby causing the first positioning post of the group to disengage from the cylinder, stop sliding, and thus avoid the first positioning post from over-clamping the processing workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning tooling, in particular to a positioning tooling for electromechanical processing and a positioning method thereof. Background Art

[0002] Tooling, or process equipment, refers to the various tools used in the manufacturing process. This includes cutting tools, fixtures, molds, gauges, gauges, auxiliary tools, bench tools, and workstation equipment. Tooling is a general abbreviation for this. During electromechanical processing, some manufacturers use positioning tooling to limit and position electromechanical equipment, facilitating processing.

[0003] During electromechanical processing, there are often processing steps such as cutting and punching of steel plates. When processing the plates, they need to be positioned and fixed in advance to prevent the plates from moving during processing and causing processing failures. When positioning the plates, existing positioning fixtures use multiple sets of cylinders and other driving parts around the plates to drive the positioning plates to move and clamp the plates. This positioning fixture often increases the overall cost of the fixture due to the use of multiple electrical equipment. In order to ensure that the workpiece is not over-clamped, electronic equipment such as sensors are also used, further increasing the cost. To this end, we proposed a positioning fixture for electromechanical processing and its positioning method for use to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning fixture for electromechanical processing and a positioning method thereof, so as to solve the technical problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a positioning tool for electromechanical processing, comprising a fixed seat with a hollow interior, a mounting plate provided between the side walls of the inner cavity of the fixed seat, a cylinder installed at the center of the bottom of the inner cavity of the fixed seat, the output end of the cylinder passes through the mounting plate and is fixedly connected to a square rod, first racks are provided on the side walls around the square rod along the length direction, the mounting plate is penetrated by a through-hole for the square rod and the first rack to pass through, four groups of positioning mechanisms corresponding to the four groups of first racks are installed on the top of the mounting plate, and the distance between the two oppositely arranged groups of positioning mechanisms and the square rod is equal, the four groups of positioning mechanisms are respectively engaged with the first racks of corresponding angles on the square rod, the cylinder extends and retracts to drive the square rod and the first rack to slide, thereby driving the four groups of positioning mechanisms to slide simultaneously to clamp and release the positioning processing workpiece;

[0006] The locking mechanism comprises two parallel fixed blocks and an internally hollow first positioning column, the bottom of the first positioning column is slidably connected to the mounting plate, the top of the first positioning column passes through the top of the fixed seat, and the two first fixed blocks are rotatably connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to the driving gear and the driven gear, and the driving gear is meshed with the first rack, and the second rack is slidably connected through the opposite side walls of the first positioning column, and the second rack is meshed with the driven gear, and a locking assembly is provided in the inner cavity of the first positioning column. During the sliding positioning process of the first positioning column, the locking assembly locks and fixes the second rack, and after the first positioning column completes clamping and fixing, the locking assembly releases the second rack, and the opposite side walls of the first positioning column are symmetrically opened with openings that cooperate with the second rack, and a limiting block is installed at one end of the second rack away from the driven gear, and the cross section of the limiting block is larger than the cross section of the opening.

[0007] Preferably, the locking assembly comprises a locking member and an extrusion member that cooperate with each other;

[0008] The locking member includes a circular mounting block and a second fixing block, the second fixing block being fixedly mounted between the side walls of the inner cavity of the first positioning column, the opposite side walls of the circular mounting block passing through the second fixing block and being slidably connected to the second fixing block, the second rack passing through the opening of the circular mounting block, a side wall of the inner cavity of the circular mounting block close to the second rack being provided with locking teeth that engage with each other on the second rack, a first inclined surface being provided on the top of the circular mounting block, and an inclination direction of the first inclined surface being gradually increased from a side of the circular mounting block close to the workpiece to a side of the circular mounting block away from the workpiece;

[0009] The extrusion member includes a sliding rod, which is slidably connected to a side surface of the first positioning column close to the workpiece. An extrusion block is installed at the end of the sliding rod close to the workpiece, and the extrusion block contacts the workpiece during positioning. A pushing block is installed at the end of the sliding rod away from the workpiece, and a side surface of the pushing block close to the circular mounting block is provided with a second inclined surface that cooperates with the first inclined surface.

[0010] Preferably, a first spring is provided on the outer wall of the sliding rod, and the first spring is located between the extrusion block and the side wall of the first positioning column.

[0011] Preferably, a fixed shaft is provided between the inner cavity side wall of the circular mounting block and the top of the second fixed block, and the fixed shaft passes through the second fixed block and is slidably connected to the second fixed block. A second spring is sleeved on the outer wall of the fixed shaft, and the second spring is located between the top of the second fixed block and the circular mounting block.

[0012] Preferably, a connecting rod is vertically connected to the side wall of the first positioning column, an end of the connecting rod away from the first positioning column is connected to the second positioning column, and the second positioning column is arranged parallel to the first positioning column.

[0013] Preferably, the mounting plate is slidably connected to the side wall of the inner cavity of the fixing seat, a limit plate is provided on the top of the square rod, and the cross section of the limit plate is larger than the cross section of the through-hole, and a pressing block is provided on the top of the first positioning column. When the cylinder contracts, the contact between the limit plate and the mounting plate drives the mounting plate, the first positioning column and the pressing block to descend, thereby pressing and fixing the workpiece through the pressing block;

[0014] Return components are provided at the four corners of the mounting plate.

[0015] Preferably, the return assembly includes a column, the bottom of the column is fixedly connected to the bottom of the inner cavity of the fixing seat, the top of the column passes through the inner cavity of the mounting plate and is threadedly connected with a locking nut, and the column is slidingly connected to the mounting plate, and a third spring is provided on the outer wall of the column, and the third spring is located between the mounting plate and the bottom of the inner cavity of the fixing seat.

[0016] Preferably, the four side walls of the limiting plate are provided with clearance grooves that cooperate with the first rack.

[0017] Preferably, a sliding groove that cooperates with the first positioning column and the second positioning column is provided on the top of the fixing seat.

[0018] The invention discloses a positioning method for electromechanical processing, which uses a positioning tool for positioning.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the workpiece is being processed, the present invention only needs to start the cylinder to drive the square rod and the first rack to descend, thereby respectively driving the four groups of first positioning columns to slide, thereby clamping and fixing the processed workpiece, and a locking assembly is provided in the first positioning column, so that when the first positioning column of the group contacts the processed workpiece, the locking assembly can be triggered to release the second rack in the first positioning column, thereby separating the first positioning column of the group from the cylinder, stopping sliding, and thus preventing the first positioning column from over-clamping the processed workpiece;

[0021] The tooling only uses one set of cylinders to achieve clamping and positioning of the workpiece, which greatly reduces the production cost of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic structural diagram of the present invention in a no-load state;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention after the workpiece is installed and processed;

[0025] Figure 3 This is a schematic diagram of the internal structure of the fixing seat of the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle;

[0027] Figure 5 It is a structural schematic diagram of the cylinder and its connecting parts of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the mounting plate in the present invention;

[0029] Figure 7 Schematic diagram of the structure of the positioning mechanism of the present invention;

[0030] Figure 8 Schematic diagram of the cross-sectional structure of the positioning mechanism in the present invention;

[0031] Figure 9 for Figure 8 A side structural diagram of

[0032] Figure 10 for Figure 9 A magnified schematic diagram of the structure at B in the middle;

[0033] Figure 11 for Figure 9 A magnified schematic diagram of the structure at C in the middle;

[0034] Figure 12 It is a structural schematic diagram of the locking member of the locking assembly in the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0036] 1. Fixed seat; 11. Slide groove; 2. Mounting plate; 21. Through-hole; 22. Return assembly; 221. Column; 222. Locking nut; 223. Third spring; 3. Cylinder; 4. Square rod; 5. First rack; 6. Positioning mechanism; 61. First fixed block; 62. First positioning column; 621. Connecting rod; 622. Second positioning column; 63. Rotating rod; 64. Driving gear; 65. Driven gear; 66. Second rack; 67. Locking assembly; 671. Circular mounting block; 672. Second fixed block; 673. Clamping tooth; 674. Sliding rod; 675. Extrusion block; 676. Pushing block; 677. First spring; 678. Fixed shaft; 679. Second spring; 68. Limit block; 69. Pressing block; 7. Workpiece; 8. Limit plate; 81. Gap. DETAILED DESCRIPTION

[0037] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] See also Figure 1-12 , the present invention provides a technical solution:

[0039] A positioning tool for electromechanical processing, comprising a fixed base 1 with a hollow interior, a mounting plate 2 provided between the side walls of the inner cavity of the fixed base 1, a cylinder 3 installed at the center of the bottom of the inner cavity of the fixed base 1, the output end of the cylinder 3 passes through the mounting plate 2 and is fixedly connected to a square rod 4, first racks 5 are provided on the side walls around the square rod 4 along the length direction, the mounting plate 2 is penetrated by a through-hole 21 for the square rod 4 and the first rack 5 to pass through, four groups of positioning mechanisms 6 corresponding to the four groups of first racks 5 are installed on the top of the mounting plate 2, and the distance between the two oppositely arranged groups of positioning mechanisms 6 and the square rod 4 is equal, the four groups of positioning mechanisms 6 are respectively engaged with the first racks 5 of corresponding angles on the square rod 4, the cylinder 3 is extended and retracted to drive the square rod 4 and the first rack 5 to slide, thereby driving the four groups of positioning mechanisms 6 to slide simultaneously to clamp and release the workpiece 7 for positioning processing;

[0040] The positioning mechanism 6 includes two parallel first fixing blocks 61 and a first positioning column 62 with a hollow interior. The bottom of the first positioning column 62 is slidably connected to the mounting plate 2, and the top of the first positioning column 62 passes through the top of the fixing seat 1. A rotating rod 63 is rotatably connected between the two first fixing blocks 61. The outer wall of the rotating rod 63 is fixed with a driving gear 64 and a driven gear 65, and the driving gear 64 is meshed with the first rack 5. A second rack 66 is slidably connected between the opposite side walls of the first positioning column 62. The second rack 66 The first positioning column 62 is meshed with the driven gear 65, and a locking assembly 67 is provided in the inner cavity of the first positioning column 62. During the sliding positioning process of the first positioning column 62, the locking assembly 67 locks and fixes the second rack 66. After the first positioning column 62 completes the clamping and fixation, the locking assembly 67 releases the second rack 66. The first positioning column 62 has symmetrical openings on the two opposite side walls that cooperate with the second rack 66. A limit block 68 is installed at the end of the second rack 66 away from the driven gear 65, and the cross-section of the limit block 68 is larger than the cross-section of the opening.

[0041] Specifically, the locking assembly 67 includes a locking member and an extrusion member that cooperate with each other;

[0042] The locking member includes a circular mounting block 671 and a second fixing block 672. The second fixing block 672 is fixedly mounted between the side walls of the inner cavity of the first positioning column 62. The opposite side walls of the circular mounting block 671 pass through the second fixing block 672 and are slidably connected to the second fixing block 672. The second rack 66 passes through the opening of the circular mounting block 671. A side wall of the inner cavity of the circular mounting block 671 close to the second rack 66 is provided with a latching tooth 673 that engages with the second rack 66. A first inclined surface is provided on the top of the circular mounting block 671, and the inclination direction of the first inclined surface is that the side of the circular mounting block 671 close to the workpiece 7 gradually increases towards the side of the circular mounting block 671 away from the workpiece 7.

[0043] The extrusion member includes a sliding rod 674, which is slidably connected to a side surface of the first positioning column 62 close to the workpiece 7. An extrusion block 675 is installed at the end of the sliding rod 674 close to the workpiece 7, and the extrusion block 675 contacts the workpiece 7 during positioning. A push block 676 is installed at the end of the sliding rod 674 away from the workpiece 7. The push block 676 is close to the side of the circular mounting block 671 and is provided with a second inclined surface that cooperates with the first inclined surface.

[0044] From the above description, it can be seen that: when the extrusion block contacts the workpiece, an extrusion force is generated to push the sliding rod and the pushing block to slide, so that the pushing block pushes the circular mounting block down through the cooperation of the second inclined surface and the first inclined surface, and then the latching tooth disengages from the rack, so that the rack does not contact the first positioning column when sliding, thereby realizing the relative movement of the latching tooth and the first positioning column, so that the workpiece will not be over-clamped.

[0045] Specifically, a first spring 677 is provided on the outer wall of the sliding rod 674 , and the first spring 677 is located between the extrusion block 675 and the side wall of the first positioning column 62 .

[0046] From the above description, it can be seen that by providing the first spring, after the extrusion block is separated from the workpiece, the extrusion block and the push block can return to their original positions under the action of the restoring force of the first spring.

[0047] Specifically, a fixed shaft 678 is provided between the inner cavity side wall of the circular mounting block 671 and the top of the second fixed block 672, and the fixed shaft 678 passes through the second fixed block 672 and is slidably connected to the second fixed block 672. A second spring 679 is sleeved on the outer wall of the fixed shaft 678, and the second spring 679 is located between the top of the second fixed block 672 and the circular mounting block 671.

[0048] From the above description, it can be seen that after the pushing block is out of contact with the circular mounting block, the circular mounting block can return to its original position under the action of the second spring restoring force, thereby re-engaging the latching teeth with the second rack and achieving a fixed connection.

[0049] Specifically, a connecting rod 621 is vertically connected to the side wall of the first positioning column 62 , and one end of the connecting rod 621 away from the first positioning column 62 is connected to the second positioning column 622 , and the second positioning column 622 is arranged parallel to the first positioning column 62 .

[0050] From the above description, it can be seen that different positions on the same side of the workpiece can be positioned by the second positioning column, thereby ensuring the accuracy and stability of the positioning of the workpiece.

[0051] Specifically, the mounting plate 2 is slidably connected to the inner cavity side wall of the fixing seat 1. A limit plate 8 is provided on the top of the square rod 4, and the cross section of the limit plate 8 is larger than the cross section of the through-hole 21. A pressing block 69 is provided on the top of the first positioning column 62. When the cylinder 3 contracts, the contact between the limit plate 8 and the mounting plate 2 drives the mounting plate 2, the first positioning column 62 and the pressing block 69 to descend, thereby pressing and fixing the workpiece 7 through the pressing block 69.

[0052] Return components 22 are provided at the four corners of the mounting plate 2 .

[0053] From the above description, it can be seen that when the cylinder descends to a certain height, it can drive the mounting plate to descend through the limit plate, thereby driving the first positioning column and the clamping block to descend, so that the clamping block can clamp and fix the top of the workpiece, further improving the positioning stability.

[0054] Specifically, the return assembly 22 includes a column 221, the bottom of the column 221 is fixedly connected to the bottom of the inner cavity of the fixing seat 1, the top of the column 221 passes through the inner cavity of the mounting plate 2 and is threadedly connected with a locking nut 222, and the column 221 is slidingly connected to the mounting plate 2, and a third spring 223 is provided on the outer wall of the column 221, and the third spring 223 is located between the mounting plate 2 and the bottom of the inner cavity of the fixing seat 1.

[0055] From the above description, it can be seen that after losing the extrusion force of the limiting plate, the mounting plate can return to its original position under the action of the restoring force of the third spring, thereby separating the extrusion plate from the workpiece.

[0056] Specifically, the four side walls of the limiting plate 8 are provided with a clearance groove 81 that cooperates with the first rack 5 .

[0057] From the above description, it can be seen that the limiting plate will not interfere with the rotation of the driving gear during the up and down sliding process.

[0058] Specifically, a sliding groove 11 that cooperates with the first positioning column 62 and the second positioning column 622 is formed on the top of the fixing seat 1 .

[0059] The invention discloses a positioning method for electromechanical processing, which uses a positioning tool for positioning.

[0060] Please refer to Figure 1-12 As shown: One embodiment of the present invention is:

[0061] Please refer to Figure 1 、 2 As shown in , 3 and 4, a positioning tool for electromechanical processing comprises a fixed base 1 with a hollow interior, a mounting plate 2 is provided between the side walls of the inner cavity of the fixed base 1, a cylinder 3 is installed at the center of the bottom of the inner cavity of the fixed base 1, the output end of the cylinder 3 passes through the mounting plate 2 and is fixedly connected to a square rod 4, and the side walls around the square rod 4 are provided with a first rack 5 along the length direction, the mounting plate 2 is penetrated by a through hole 21 for the square rod 4 and the first rack 5 to pass through, four groups of positioning mechanisms 6 corresponding to the four groups of first racks 5 are installed on the top of the mounting plate 2, and the distances between the two relatively arranged groups of positioning mechanisms 6 and the square rod 4 are equal (that is, the distances between the left and right groups of positioning mechanisms and the square rod are equal, and the distances between the front and rear groups of positioning mechanisms and the direction rod are equal), the four groups of positioning mechanisms 6 are respectively engaged with the first racks 5 of corresponding angles on the square rod 4, the cylinder 3 is extended and retracted to drive the square rod 4 and the first rack 5 to slide, thereby driving the four groups of positioning mechanisms 6 to slide simultaneously to clamp and release the positioning processing workpiece 7;

[0062] Please refer to Figure 8 and 9As shown, the positioning mechanism 6 includes two parallel first fixing blocks 61 and an internally hollow first positioning column 62, the bottom of the first positioning column 62 is slidably connected to the mounting plate 2 (the top of the mounting plate 2 is provided with a limiting groove that cooperates with the first positioning column), the side wall of the first positioning column 62 is vertically connected to a connecting rod 621, and the end of the connecting rod 621 away from the first positioning column 62 is connected to a second positioning column 622, and the second positioning column 622 is arranged parallel to the first positioning column 62, and in order to ensure that the second positioning column 622 can be clamped with the workpiece 7, a structure consistent with the sliding rod 674, the extrusion block 675 and the first spring 677 is provided on the surface of the second positioning column 622 close to the workpiece 7; the top of the first positioning column 62 passes through the top of the fixing seat 1, and the two first fixing blocks 61 are connected. A rotating rod 63 is rotatably connected between the two sides, and a driving gear 64 and a driven gear 65 are fixed to the outer wall of the rotating rod 63, and the driving gear 64 is meshed with the first rack 5. A second rack 66 is slidably connected between the opposite side walls of the first positioning column 62, and the second rack 66 is meshed with the driven gear 65. A locking assembly 67 is provided in the inner cavity of the first positioning column 62. During the sliding positioning process of the first positioning column 62, the locking assembly 67 locks and fixes the second rack 66. After the first positioning column 62 is clamped and fixed, the locking assembly 67 releases the second rack 66. The opposite side walls of the first positioning column 62 are symmetrically provided with openings that cooperate with the second rack 66. A limit block 68 is installed on the end of the second rack 66 away from the driven gear 65, and the cross section of the limit block 68 is larger than the cross section of the opening.

[0063] Please refer to Figure 9 、 10As shown in Figure 11, the locking assembly 67 includes a locking member and an extrusion member that cooperate with each other; the locking member includes a circular mounting block 671 and a second fixed block 672, the second fixed block 672 is fixedly installed between the side walls of the inner cavity of the first positioning column 62, the opposite side walls of the circular mounting block 671 pass through the second fixed block 672 and are slidably connected to the second fixed block 672, the second rack 66 passes through the opening of the circular mounting block 671, and a side wall of the inner cavity of the circular mounting block 671 close to the second rack 66 is provided with a locking tooth 673 that engages with the second rack 66, and a first inclined surface is provided on the top of the circular mounting block 671, and the inclination direction of the first inclined surface is a side surface of the circular mounting block 671 close to the workpiece 7. The height of the side of the circular mounting block 671 away from the workpiece 7 gradually increases; the extrusion member includes a sliding rod 674, which is slidably connected to the side of the first positioning column 62 close to the workpiece 7, and an extrusion block 675 is installed on the end of the sliding rod 674 close to the workpiece 7, and the extrusion block 675 contacts the workpiece 7 during positioning, and a pushing block 676 is installed on the end of the sliding rod 674 away from the workpiece 7, and a second inclined surface that cooperates with the first inclined surface is provided on the side of the pushing block 676 close to the circular mounting block 671, and a first spring 677 is provided on the outer wall of the sliding rod 674, and the first spring 677 is located between the extrusion block 675 and the side wall of the first positioning column 62;

[0064] A fixed shaft 678 is arranged between the inner cavity side wall of the circular mounting block 671 and the top of the second fixed block 672, and the fixed shaft 678 passes through the second fixed block 672 and is slidably connected to the second fixed block 672. A second spring 679 is sleeved on the outer wall of the fixed shaft 678, and the second spring 679 is located between the top of the second fixed block 672 and the circular mounting block 671.

[0065] Please refer to Figure 6 As shown: the mounting plate 2 is slidably connected to the inner cavity side wall of the fixing seat 1, a limit plate 8 is provided on the top of the square rod 4, and the cross section of the limit plate 8 is larger than the cross section of the through-hole 21, and the four side walls of the limit plate 8 are provided with a clearance groove 81 that cooperates with the first rack 5, and a pressing block 69 is provided on the top of the first positioning column 62. When the cylinder 3 contracts, the contact between the limit plate 8 and the mounting plate 2 drives the mounting plate 2, the first positioning column 62 and the pressing block 69 to descend, thereby pressing and fixing the workpiece 7 through the pressing block 69;

[0066] Return components 22 are provided at the four corners of the mounting plate 2. The return components 22 include columns 221. The bottom of the columns 221 is fixedly connected to the bottom of the inner cavity of the fixing seat 1. The top of the columns 221 passes through the inner cavity of the mounting plate 2 and is threadedly connected with a locking nut 222. The columns 221 are slidably connected to the mounting plate 2. A third spring 223 is provided on the outer wall of the columns 221, and the third spring 223 is located between the mounting plate 2 and the bottom of the inner cavity of the fixing seat 1.

[0067] The positioning process of the above embodiment is as follows: (the workpiece in this embodiment is a square steel plate, and a punching operation is performed, so the positioning tool is installed on the punching machine)

[0068] S1: Return the positioning fixture to its initial position: Extend the cylinder 3 so that the square rod 4 passes through the through-hole 21 and enters above the mounting plate 2, and the four first racks 5 on the square rod 4 respectively drive the four sets of driving gears 64 and the rotating rod 63 to rotate, thereby driving the four sets of driven gears 65 to rotate, and because the driven gears 65 are engaged with the second racks 66, and the second racks 66 are locked by the locking assembly 67, the engagement of the driven gears 65 and the second racks 66 can drive the second racks 66 and the first positioning column 62 to slide in a direction away from each other, thereby returning the first positioning column 62 to its original position;

[0069] S2: Placing the workpiece: placing the workpiece 7 on top of the base 1 and between the four groups of first positioning columns 62;

[0070] S3: Positioning of the workpiece: Start the cylinder 3 through the external switch, retract the cylinder 3, and the cylinder 3 drives the square rod 4 and the first rack 5 to descend, thereby driving the second rack 66, the first positioning column 62 and the second positioning column 622 to slide along the direction of the workpiece 7, and when the first positioning column 62 contacts the workpiece 7, it continues to push the workpiece 7 to move to the processing position. When the first positioning column 62 and the second positioning column 622 on the opposite sides both contact the workpiece 7, the squeezing block 675 generates squeezing force and pushes the sliding rod 674 and the pushing block 676 to slide, thereby pushing the circular mounting block 671 along the pushing block 676. The second fixing block 672 descends, causing the latching teeth 673 to disengage from the second rack 66. Even if the second rack 66 is in a slidable free state, the first positioning post 62 will not be driven to continue sliding during the process of the cylinder 3 continuing to descend. After the first positioning posts 62 of the other two groups come into contact with the workpiece 7, the cylinder 3 continues to descend until the limit block 68 at the end of the second rack 66 comes into contact with the first positioning post 62 (at this time, the square rod 4 descends to the lowest position, that is, the limit plate 8 at the top of the square rod 4 comes into contact with the mounting plate 2, causing the mounting plate 2 to squeeze and slide), thereby ensuring the fixation of the position of the first positioning post 62 and ensuring the clamping state;

[0071] The mounting plate 2 is squeezed and slides downward, driving the positioning mechanism 6 to descend, so that the pressing blocks 69 on the top of the first positioning column 62 and the second positioning column 622 contact and squeeze the top of the workpiece 7, thereby completing the positioning of the workpiece 7 and performing the punching process on the workpiece 7;

[0072] S4: Workpiece removal: The cylinder 3 is activated, and the cylinder 3 pushes the square rod 4 upward, breaking away from the contact with the mounting plate 2. As a result, the mounting plate 2 returns to its original position under the restoring force of the third spring 223, causing the pressing block 69 to rise and separate from the workpiece 7.

[0073] The cylinder 3 also drives the second rack 66 and the limit block 68 to slide in the opposite direction, so that the limit block 68 disengages from the first positioning column 62, so that the first positioning column 62 loses the limiting effect of the limit block 68, even if the extrusion block 675 loses the clamping force, so that the extrusion block 675 and the push block 676 can move in the return direction under the action of the restoring force of the first spring 677, so that the push block 676 disengages from the circular mounting block 671, and the circular mounting block 671 slides upward under the action of the restoring force of the second spring 679, so that the tooth 673 re-engages and fixes the second rack 66, so that the second rack 66 is in a locked state, so that the sliding of the second rack 66 can drive the first positioning column 62 to slide, thereby sliding the first positioning column 62 to its original position, and finally the workpiece 7 can be removed.

[0074] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0075] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0076] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning tool for electromechanical processing, characterized by: The invention comprises a fixing seat (1) with a hollow interior, a mounting plate (2) is provided between the side walls of the inner cavity of the fixing seat (1), a cylinder (3) is installed at the center of the bottom of the inner cavity of the fixing seat (1), the output end of the cylinder (3) passes through the mounting plate (2) and is fixedly connected to a square rod (4), the side walls around the square rod (4) are all provided with first racks (5) along the length direction, the mounting plate (2) is penetrated by a through hole (21) for the square rod (4) and the first rack (5) to pass through, and the top of the mounting plate (2) is provided with four sets of first racks (5) arranged in a one-to-one correspondence. The four positioning mechanisms (6) are arranged such that the distances between the two relatively arranged positioning mechanisms (6) and the square rod (4) are equal. The four positioning mechanisms (6) are respectively engaged with the first racks (5) of corresponding angles on the square rod (4). The cylinder (3) is extended and retracted to drive the square rod (4) and the first rack (5) to slide, thereby driving the four positioning mechanisms (6) to slide and clamp and release the workpiece (7) for positioning at the same time. The positioning mechanism (6) includes two parallel first fixing blocks (61) and a first positioning column (62) with a hollow interior. The first positioning column (6) 2) The bottom is slidably connected to the mounting plate (2), the top of the first positioning column (62) passes through the top of the fixing seat (1), a rotating rod (63) is rotatably connected between the two first fixing blocks (61), the outer wall of the rotating rod (63) is fixed with a driving gear (64) and a driven gear (65), and the driving gear (64) is meshed with the first rack (5), and the first positioning column (62) is slidably connected with a second rack (66) passing through the opposite side walls, and the second rack (66) is meshed with the driven gear (65), and the first positioning column (6 2) The inner cavity is provided with a locking assembly (67), and the locking assembly (67) locks and fixes the second rack (66) during the sliding positioning process of the first positioning column (62). After the first positioning column (62) is clamped and fixed, the locking assembly (67) releases the second rack (66). The first positioning column (62) is symmetrically provided with openings that cooperate with the second rack (66) on the two opposite side walls. A limiting block (68) is installed at one end of the second rack (66) away from the driven gear (65), and the cross section of the limiting block (68) is larger than the cross section of the opening; The locking assembly (67) includes a locking member and an extrusion member that cooperate with each other, and the locking member includes a circular mounting block (671) and a second fixed block (672), the second fixed block (672) is fixedly mounted between the side walls of the inner cavity of the first positioning column (62), the opposite side walls of the circular mounting block (671) pass through the second fixed block (672) and are slidably connected to the second fixed block (672), the second rack (66) passes through the opening of the circular mounting block (671), and a side wall of the inner cavity of the circular mounting block (671) close to the second rack (66) is provided with a latching tooth (673) that engages with the second rack (66) mutually, and a first inclined surface is provided on the top of the circular mounting block (671), and the inclination direction of the first inclined surface is gradually increased from the side of the circular mounting block (671) close to the processing workpiece (7) to the side of the circular mounting block (671) away from the processing workpiece (7); The extrusion member includes a sliding rod (674), which is slidably connected to a side surface of the first positioning column (62) close to the processing workpiece (7), and an extrusion block (675) is installed at one end of the sliding rod (674) close to the processing workpiece (7), and the extrusion block (675) contacts the processing workpiece (7) during positioning, and a push block (676) is installed at one end of the sliding rod (674) away from the processing workpiece (7), and a second inclined surface that cooperates with the first inclined surface is provided on a side surface of the push block (676) close to the circular mounting block (671).

2. A positioning fixture for electromechanical processing according to claim 1, characterized in that: A first spring (677) is provided on the outer wall of the sliding rod (674), and the first spring (677) is located between the extrusion block (675) and the side wall of the first positioning column (62).

3. The positioning fixture for electromechanical processing according to claim 1, characterized in that: A fixed shaft (678) is provided between the inner cavity side wall of the circular mounting block (671) and the top of the second fixed block (672), and the fixed shaft (678) passes through the second fixed block (672) and is slidably connected to the second fixed block (672), and a second spring (679) is sleeved on the outer wall of the fixed shaft (678), and the second spring (679) is located between the top of the second fixed block (672) and the circular mounting block (671).

4. The positioning fixture for electromechanical processing according to claim 1, characterized in that: The side wall of the first positioning column (62) is vertically connected to a connecting rod (621), one end of the connecting rod (621) away from the first positioning column (62) is connected to a second positioning column (622), and the second positioning column (622) is arranged parallel to the first positioning column (62).

5. The positioning fixture for electromechanical processing according to claim 1, characterized in that: The mounting plate (2) is slidably connected to the inner cavity side wall of the fixing seat (1); a limiting plate (8) is provided on the top of the square rod (4); and the cross section of the limiting plate (8) is larger than the cross section of the through opening (21); a pressing block (69) is provided on the top of the first positioning column (62); when the cylinder (3) contracts, the limiting plate (8) and the mounting plate (2) are in contact with each other, driving the mounting plate (2), the first positioning column (62) and the pressing block (69) to descend, thereby pressing and fixing the workpiece (7) through the pressing block (69); and return components (22) are provided at the four corners of the mounting plate (2).

6. A positioning fixture for electromechanical processing according to claim 5, characterized in that: The return assembly (22) includes a column (221), the bottom of the column (221) is fixedly connected to the bottom of the inner cavity of the fixing seat (1), the top of the column (221) passes through the inner cavity of the mounting plate (2) and is threadedly connected to a locking nut (222), and the column (221) is slidably connected to the mounting plate (2), and a third spring (223) is provided on the outer wall of the column (221), and the third spring (223) is located between the mounting plate (2) and the bottom of the inner cavity of the fixing seat (1).

7. The positioning fixture for electromechanical processing according to claim 5, characterized in that: The four side walls of the limiting plate (8) are provided with a clearance groove (81) that cooperates with the first rack (5).

8. The positioning fixture for electromechanical processing according to claim 4, characterized in that: The top of the fixing seat (1) is provided with a sliding groove (11) that cooperates with the first positioning column (62) and the second positioning column (622).

9. A positioning method for electromechanical machining, characterized in that: Positioning is performed using the positioning tool described in any one of claims 1 to 8.

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