Universal CNC machining fixture

Abstract

The utility model discloses a general type CNC processing clamp, through setting up the bearing seat for placing workpiece in the middle area of base, both sides are provided with the material pressing mechanism of inclined state respectively, and the middle area of bearing seat sets up the abutting seat for abutting workpiece. Such can form workpiece placement position between abutting seat and both sides material pressing mechanism respectively, and can realize the abutting of workpiece of different height simultaneously through the abutting block of abutting seat after adding, under the drive of drive mechanism, push the block forward and push down and extrude workpiece, can realize the quick and effective clamping workpiece. The whole device is not only simple structure, less parts, lower cost, and the clamping effect is good, and the operation of loading and taking is more convenient, and the commonality is better.

Description

Technical Field

[0001] This utility model relates to the field of industrial production tool technology, and in particular to a general-purpose CNC machining fixture. Background Technology

[0002] In industrial production, it is often necessary to fix workpieces in place before processing. For example, in the processing of aluminum profiles, it is often necessary to process two workpieces of different heights simultaneously. This results in a complex workpiece fixing structure and cumbersome operation. Currently, multiple independent horizontal and vertical clamping mechanisms are generally used to fix the two workpieces separately. In other words, the two workpieces are simply placed together on the same processing base, but the fixing is independent of each other. This not only makes the fixing structure more complex, the operation more cumbersome, and the equipment cost higher, but also requires more space to accommodate more clamping mechanisms. As a result, with the same fixture size, only smaller workpieces can be accommodated, thus reducing the adaptability to workpiece size. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a general-purpose CNC machining fixture with a simpler structure, more reasonable design, better adaptability to different workpiece sizes, fewer parts, lower cost, easier operation, and better clamping stability.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a general-purpose CNC machining fixture, including a base, and two rows of clamping mechanisms installed along the base to form a machining structure capable of clamping two workpieces simultaneously; the clamping mechanisms are installed on the base in an inclined posture, and each clamping mechanism is connected to a push block, each push block being aligned with the outer wall of the corresponding workpiece in an inclined downward posture; a bearing seat is provided in the middle area of ​​the base, and an abutment seat is provided on the bearing seat, which divides the bearing seat into two workpiece placement positions, left and right; the right row of clamping mechanisms is located outside the right workpiece placement position, and the first workpiece placed in the right workpiece placement position is clamped by the abutment seat in conjunction with the right push block; the left row of clamping mechanisms is located outside the left workpiece placement position, and the second workpiece placed in the left workpiece placement position is clamped by the abutment seat in conjunction with the left push block.

[0005] Furthermore, a support block is provided on the abutment near the right or left edge. By increasing the height of the right or left side of the abutment by the support block, placement positions for workpieces of different heights are formed on the left and right sides.

[0006] Furthermore, the abutment block is arranged along the right edge of the abutment seat so that the abutment height on the right side of the abutment seat is greater than the abutment height on the left side. The abutment block abuts against the upper side edge of the first workpiece, and the abutment seat abuts against the side edge of the second workpiece and the lower side edge of the first workpiece, respectively.

[0007] Furthermore, the abutment and the support block are respectively provided with fastening blocks for the second workpiece and the first workpiece. The fastening blocks are provided with fastening edges on their sides. The fastening blocks on the support block fasten the upper edge of the first workpiece through their fastening edges, while the fastening blocks on the abutment seat fasten the upper edge of the second workpiece through their fastening edges.

[0008] Furthermore, the pressing mechanism is driven by a pressing cylinder. The inclined fixed seat of the pressing cylinder is installed on the edge of the base, and the cylinder rod of the pressing cylinder extends inclinedly and is connected and fixed to the tail of the push block. Multiple mounting slots are provided on the base, and the bearing seat and the fixed seat are respectively installed in the corresponding mounting slots by locking screws.

[0009] Furthermore, the push block includes a first push block and a second push block for workpieces of different heights. Multiple rows of mounting holes are provided at the tail of both the first push block and the second push block, which are connected and fixed to the cylinder rod of the pressure cylinder through any row of mounting holes. The first push block is connected to the pressure cylinder on the right side, and the second push block is connected to the pressure cylinder on the left side.

[0010] Furthermore, a sensor for detecting the workpiece is installed on the pressure cylinder near the head of the workpiece.

[0011] Furthermore, both the abutment and the support block are provided with fixing grooves. The support block and the buckle block for the second workpiece are respectively installed in the corresponding fixing grooves on the abutment with fixing screws. The buckle block for the first workpiece is installed in the fixing groove of the support block with fixing screws. The buckle block is provided with a strip hole. The fixing screw passes through the strip hole to install the buckle block in the corresponding fixing groove. The buckle block is also provided with several adjustment holes, and adjustment screws are provided in the adjustment holes.

[0012] Furthermore, positioning cylinders are respectively installed on the base at positions aligned with the ends of the two workpieces, and the positioning cylinders press against the ends of the corresponding workpieces.

[0013] Furthermore, a push bar is provided at the top front end of the first push block, the push bar protruding forward and downward relative to the front end face of the first push block; a pressure bar is provided at the bottom front end of the second push block, the pressure bar protruding forward and downward but basically flush with the front end face of the second push block, and a horizontal pressure surface is provided on the bottom surface of the pressure bar.

[0014] This invention features a support base in the middle of a base for placing workpieces, with inclined pressing mechanisms on both sides. An abutment is located in the middle of the support base to abut the workpieces. This creates workpiece placement positions between the abutment and the pressing mechanisms on both sides, allowing simultaneous abutment of two workpieces using only one abutment. Furthermore, by adding abutment blocks to the abutment, workpieces of different heights can be abutted simultaneously. Driven by a drive mechanism, the pusher blocks push the workpieces forward and downward, achieving quick and effective clamping. The entire device is not only simple in structure with fewer parts and lower cost, but also provides good clamping performance, convenient loading and unloading operations, and better versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0017] Figure 3 This is a schematic diagram of the end face of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the first pusher block;

[0019] Figure 5 This is a structural diagram of the first pusher block from another angle;

[0020] Figure 6 This is a side view of the first pusher block;

[0021] Figure 7 This is a schematic diagram of the second pusher block;

[0022] Figure 8 This is a side view of the second pusher block;

[0023] Figure 9 This is a schematic diagram of the fastener block structure.

[0024] In the diagram, 1 is the base, 11 is the mounting groove, 12 is the bearing seat, 13 is the abutment seat, 14 is the fixing groove, 15 is the abutment block, 16 is the positioning cylinder, 2 is the pressing cylinder, 21 is the fixing seat, 3 is the first push block, 31 is the push strip, 32 is the mounting hole, 4 is the second push block, 41 is the pressure strip, 42 is the pressure surface, 5 is the fastener, 51 is the strip hole, 52 is the fastener edge, 53 is the adjustment hole, 54 is the adjustment screw, 6 is the sensor, 7 is the first workpiece, and 8 is the second workpiece. Detailed Implementation

[0025] In this embodiment, refer to Figures 1-9The general-purpose CNC machining fixture includes a base 1, with two rows of clamping mechanisms mounted on the base 1 to form a machining structure capable of clamping two workpieces simultaneously. The clamping mechanisms are mounted on the base 1 at an inclined angle of 5-20 degrees. Each clamping mechanism is connected to a push block, and each push block is aligned with the outer wall of the corresponding workpiece at an inclined downward position. A bearing seat 12 is provided in the middle area of ​​the base 1, and an abutment seat 13 is provided on the bearing seat 12, which divides the bearing seat 12 into two workpiece placement positions, left and right. The right row of clamping mechanisms is located outside the right workpiece placement position, and the first workpiece 7 placed in the right workpiece placement position is clamped by the abutment seat 13 in conjunction with the right push block. The left row of clamping mechanisms is located outside the left workpiece placement position, and the second workpiece 8 placed in the left workpiece placement position is clamped by the abutment seat 13 in conjunction with the left push block.

[0026] A support block 15 is provided on the abutment seat 13 near the right edge (or left edge). The support block 15 increases the height of the right side (or left side) of the abutment seat 13, so that the left and right sides form placement positions for workpieces of different heights, and workpieces of different heights can be processed at the same time.

[0027] The abutment height on the right side of the abutment seat 13 is greater than that on the left side. The abutment block 15 abuts against the upper side edge of the first workpiece 7, and the abutment seat 13 abuts against the side edge of the second workpiece 8 and the lower side edge of the first workpiece 7 respectively.

[0028] The abutment 13 and the abutment block 15 are respectively provided with fastening blocks 5 for the second workpiece 8 and the first workpiece 7. The fastening edge 52 is provided on the side of the fastening block 5. The fastening block 5 on the abutment block 15 fastens the upper edge of the first workpiece 7 through its fastening edge 52, while the fastening block 5 on the abutment 13 fastens the upper edge of the second workpiece 7 through its fastening edge 52.

[0029] The pressing mechanism is driven by a pressing cylinder 2. The inclined fixed seat 21 of the pressing cylinder 2 is installed on the edge of the base 1. The cylinder rod of the pressing cylinder 2 extends obliquely and is connected and fixed to the tail of the push block. Multiple mounting grooves 11 are provided on the base 1. The bearing seat 12 and the fixed seat 21 are respectively installed in the corresponding mounting grooves 11 by locking screws. This allows the position of the pressing cylinder 2 and the bearing seat 12 to be adjusted along the mounting grooves 11 to accommodate workpieces of different lengths.

[0030] The push block includes a first push block 3 and a second push block 4, which are designed for workpieces of different heights. Multiple rows of mounting holes 32 are provided at the tail of both the first push block 3 and the second push block 4. The push block is connected and fixed to the cylinder rod of the pressure cylinder 2 through any row of mounting holes 32, so that the installation position of the push block can be adjusted, such as by raising or lowering it. The first push block 3 is connected to the pressure cylinder 2 on the right side, and the second push block 4 is connected to the pressure cylinder 2 on the left side.

[0031] A sensor 6 for detecting the workpiece is installed on the pressure cylinder 2 near the head of the workpiece. It does not activate when the workpiece is not in place, is reversed, or is incorrectly loaded, thus preventing mistaken loading.

[0032] Both the abutment 13 and the retaining block 15 are provided with fixing grooves 14. The retaining block 15 and the fastening block 5 for the second workpiece 8 are respectively installed in the corresponding fixing grooves 14 on the abutment 13 by fixing screws. The fastening block 5 for the first workpiece 7 is installed in the fixing groove 14 of the retaining block 15 by fixing screws. This allows the position of both the fastening block 5 and the retaining block 15 to be adjusted along the fixing groove 14 (i.e., along the Y-axis direction) to accommodate different workpieces. The fastening block 5 is provided with a strip hole 51. The fixing screw passes through the strip hole 51 to install the fastening block 5 in the corresponding fixing groove 14. This allows adjustment of the size of the workpiece held by the fastening block 5 (i.e., adjustment of the size in the X-axis direction), such as holding it more or less. The fastening block 5 is also provided with several adjusting holes 53. Adjusting screws 54 are provided in the adjusting holes 53. The height of the fastening block can be adjusted by rotating the adjusting screws 54 to make fine adjustments for workpieces of different heights.

[0033] Positioning cylinders 16 are respectively installed on the base 1 at the positions of the ends of the two workpieces. The positioning cylinders 16 press against the ends of the corresponding workpieces to achieve positioning in the Y-axis direction.

[0034] A push bar 31 is provided at the top front end of the first push block 3. The push bar 31 protrudes forward and downward relative to the front end face of the first push block 3, and is used to engage with the upper groove on the side of the first workpiece 7. When the pressing cylinder 2 pushes the first push block 3 forward, the first workpiece 7 can be pressed simultaneously from both horizontal and vertical directions. A pressing bar 41 is provided at the bottom front end of the second push block 4. The pressing bar 41 protrudes forward and downward but is basically flush with the front end face of the second push block 4. The bottom surface of the pressing bar 41 is provided with a horizontal pressing surface 42. After the pressing bar 41 is engaged with the groove on the lower side of the second workpiece 8, the bottom of the groove is pressed by the pressing surface 42. When the pressing cylinder 2 pushes the second push block 4 forward, the second workpiece 8 can be pressed simultaneously from both horizontal and vertical directions.

[0035] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A general-purpose CNC machining fixture, comprising a base, and two rows of clamping mechanisms mounted along the base to form a machining structure capable of simultaneously clamping two workpieces, characterized in that: The pressing mechanism is installed on the base at an angle. Each pressing mechanism is connected to a push block, and each push block is aligned with the outer wall of the corresponding workpiece at an angle downward. A bearing seat is set in the middle area of ​​the base, and an abutment seat is set on the bearing seat. The abutment seat divides the bearing seat into two workpiece placement positions, left and right. The pressing mechanism on the right is located outside the workpiece placement position on the right. The first workpiece placed in the workpiece placement position on the right is pressed by the abutment seat and the push block on the right. The pressing mechanism on the left is located outside the workpiece placement position on the left. The second workpiece placed in the workpiece placement position on the left is pressed by the abutment seat and the push block on the left.

2. The general-purpose CNC machining fixture according to claim 1, characterized in that: A stop block is provided on the abutment near the right or left edge. The stop block increases the height of the right or left side of the abutment, so that the left and right sides form placement positions for workpieces of different heights.

3. The general-purpose CNC machining fixture according to claim 2, characterized in that: The abutment block is arranged along the right edge of the abutment seat so that the abutment height on the right side of the abutment seat is greater than the abutment height on the left side. The abutment block abuts against the upper side edge of the first workpiece, and the abutment seat abuts against the side edge of the second workpiece and the lower side edge of the first workpiece respectively.

4. The general-purpose CNC machining fixture according to claim 3, characterized in that: The abutment and the support block are respectively provided with fastening blocks for the second workpiece and the first workpiece. The fastening blocks are provided with fastening edges on their sides. The fastening blocks on the support block fasten the upper edge of the first workpiece through their fastening edges, while the fastening blocks on the abutment seat fasten the upper edge of the second workpiece through their fastening edges.

5. The general-purpose CNC machining fixture according to claim 3, characterized in that: The pressing mechanism is driven by a pressing cylinder. The inclined fixed seat of the pressing cylinder is installed on the edge of the base. The cylinder rod of the pressing cylinder extends inclinedly and is connected and fixed to the tail of the push block. Multiple mounting slots are provided on the base. The bearing seat and the fixed seat are installed in the corresponding mounting slots by locking screws.

6. The general-purpose CNC machining fixture according to claim 5, characterized in that: The push block includes a first push block and a second push block for workpieces of different heights. Multiple rows of mounting holes are provided at the tail of both the first and second push blocks, and the push block is connected and fixed to the cylinder rod of the pressure cylinder through any row of mounting holes. The first push block is connected to the pressure cylinder on the right side, and the second push block is connected to the pressure cylinder on the left side.

7. The general-purpose CNC machining fixture according to claim 5, characterized in that: A sensor for detecting the workpiece is installed on the pressure cylinder near the head of the workpiece.

8. The general-purpose CNC machining fixture according to claim 4, characterized in that: Both the abutment and the support block are provided with fixing grooves. The support block and the buckle block for the second workpiece are respectively installed in the corresponding fixing grooves on the abutment with fixing screws. The buckle block for the first workpiece is installed in the fixing groove of the support block with fixing screws. The buckle block is provided with a strip hole. The fixing screw passes through the strip hole to install the buckle block in the corresponding fixing groove. The buckle block is also provided with several adjustment holes, and adjustment screws are installed in the adjustment holes.

9. The general-purpose CNC machining fixture according to claim 1, characterized in that: Positioning cylinders are installed on the base at positions aligned with the ends of the two workpieces, and the positioning cylinders press against the ends of the corresponding workpieces.

10. The general-purpose CNC machining fixture according to claim 6, characterized in that: A push bar is provided at the top front end of the first push block, the push bar protruding forward and downward relative to the front end face of the first push block; a pressure bar is provided at the bottom front end of the second push block, the pressure bar protruding forward and downward but basically flush with the front end face of the second push block, and a horizontal pressure surface is provided on the bottom surface of the pressure bar.

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