A CNC four-axis machining fixture

Abstract

The utility model relates to the technical field of CNC four-axis machining, and discloses a CNC four-axis machining fixture, including a base, a movable groove is opened in the middle of the top wall of the base, connecting rods are arranged on both sides of the movable groove, plug blocks are engaged in the two connecting rods, the close ends of the two groups of pressure rods are fixedly connected to movable plates, the far sides of the two groups of movable plates are fixedly connected to fixed rods, the front and rear parts of the far sides of the two groups of movable plates are fixedly connected to one end of spring two, the other ends of multiple spring twos are fixedly connected to the inner wall of the fixed block, and the top walls of the two fixed blocks are fixedly connected to pins. In the utility model, the limit between the plug block and the connecting rod can be cancelled by pressing the pressure rod for disassembly, and when installation is required, the pressure rod only needs to be pressed again to insert the plug block into the connecting rod for fixing, thereby achieving the effect of facilitating the assembly and disassembly of the pins and installing different numbers of pins.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC four-axis processing, in particular to a CNC four-axis processing fixture. Background Art

[0002] CNC four-axis machining center is an advanced CNC machine tool used for machining complex parts. It usually has four main axial motions, namely X-axis, Y-axis, Z-axis and an additional rotation axis, usually called A-axis or rotation axis. It is widely used in aerospace, automobile manufacturing and mold manufacturing, providing broader possibilities for workpiece processing.

[0003] When processing parts, CNC four-axis machining centers usually need to use matching fixtures to ensure the correct positioning and stable processing of parts. At present, when using tools to grind or process parts, in order to prevent the parts from vibrating during the processing, pins are usually used to position the parts. However, when the common devices are used, the number of pins is fixed, which makes it inconvenient to position the parts during processing and it is not convenient to process workpieces of different specifications. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a CNC four-axis machining fixture, aiming to improve the problem that the number of pins in the prior art is fixed and it is not convenient to adjust.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a CNC four-axis machining fixture, including a base, a moving mechanism is arranged in the base, a moving groove is opened in the middle of the top wall of the base, connecting rods are arranged on both sides of the moving groove, plug blocks are engaged in the two connecting rods, the tops of the two plug blocks are fixedly connected to fixed blocks, pressure rods are passed through both sides of the two fixed blocks, the close ends of the two groups of pressure rods are fixedly connected to moving plates, the two groups of moving plates are fixedly connected to fixed rods on the away sides, multiple fixed rods are passed through the connecting rods, the front and rear parts of the away sides of the two groups of moving plates are fixedly connected to one end of spring two, the other ends of the multiple springs are fixedly connected to the inner wall of the fixed block, and the top walls of the two fixed blocks are fixedly connected to pins.

[0006] As a further description of the above technical solution:

[0007] The moving mechanism includes a card slot, and multiple card slots are opened on the front and rear sides of the top wall of the moving slot, and moving blocks are slidably connected to both sides of the bottom wall of the moving slot, and the inner walls of the two moving blocks are slidably connected to connecting plates, and the front and rear sides of the bottom walls of the two connecting plates are fixedly connected to springs 1, and the bottom ends of multiple springs 1 are fixedly connected to the bottom wall of the moving block, the top ends of the two connecting plates pass through the top wall of the moving block and are fixedly connected to the connecting rod, and the front and rear walls of the two connecting rods are fixedly connected to card blocks, and multiple card blocks are engaged with the card slots.

[0008] As a further description of the above technical solution:

[0009] The front and rear parts of the two groups of movable plates are penetrated by limiting rods, and both ends of the limiting rods are fixedly connected to the inner side walls of the fixed block.

[0010] As a further description of the above technical solution:

[0011] A placement groove is provided in the middle of the top wall of the movable groove, and the bottom end of the placement groove penetrates into the movable groove.

[0012] As a further description of the above technical solution:

[0013] The front and rear sides of the top wall of the base are both fixedly connected with electric push rods, and the output ends of the two electric push rods are both fixedly connected with pressure plates.

[0014] As a further description of the above technical solution:

[0015] The top wall of the base is fixedly connected with evenly distributed cushion blocks.

[0016] As a further description of the above technical solution:

[0017] The front and rear sides of the inner bottom wall of the moving groove are fixedly connected with positioning rods, and the two positioning rods are slidably connected to the moving block.

[0018] As a further description of the above technical solution:

[0019] Guide rods are passed through both sides of the two connecting plates, and the upper and lower ends of the plurality of guide rods are fixedly connected to the upper and lower walls inside the moving block.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the limit between the plug block and the connecting rod can be cancelled by pressing the pressure rod, and then the plug block can be pulled out from the connecting rod for disassembly. When installation is required, it is only necessary to press the pressure rod again to insert the plug block into the connecting rod for fixation, thereby achieving the effect of facilitating the assembly and disassembly of the pin shaft and installing different numbers of pin shafts.

[0022] 2. In the utility model, the limit of the card block and the card slot can be cancelled by pressing down the connecting rod, and then the position of the movable block can be adjusted. When the connecting rod is moved to a suitable position, the connecting rod is released, and the connecting rod and the card block can be reset and positioned under the action of a spring, thereby achieving the effect of facilitating the adjustment of the pin shaft position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a CNC four-axis machining fixture proposed by the utility model;

[0024] Figure 2 A side sectional view of a CNC four-axis machining fixture proposed by the utility model;

[0025] Figure 3 This is a front sectional view of a CNC four-axis machining fixture proposed by the utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Base; 2. Moving mechanism; 201. Slot; 202. Moving block; 203. Connecting plate; 204. Guide rod; 205. Spring 1; 206. Positioning rod; 207. Block; 3. Moving slot; 4. Fixed block; 5. Pin; 6. Electric push rod; 7. Pressing plate; 8. Pad; 9. Placement slot; 10. Insert block; 11. Moving plate; 12. Pressing rod; 13. Fixed rod; 14. Spring 2; 15. Connecting rod; 16. Limit rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 , Figure 2 and Figure 4, the utility model provides an embodiment: a CNC four-axis machining fixture, including a base 1, a moving mechanism 2 is arranged in the base 1, a moving groove 3 is opened in the middle of the top wall of the base 1, connecting rods 15 are arranged on both sides of the moving groove 3, plug blocks 10 are engaged in the two connecting rods 15, the tops of the two plug blocks 10 are fixedly connected to the fixed blocks 4, and the two fixed blocks 4 are penetrated by pressure rods 12 on both sides, the close ends of the two groups of pressure rods 12 are fixedly connected to the moving plates 11, the two groups of moving plates 11 are fixedly connected to the fixed rods 13 on the away sides, and multiple fixed rods 13 are penetrated into the connecting rods 15, the front and rear parts of the two groups of moving plates 11 are fixedly connected to one end of the spring 2 14, and the other ends of the multiple springs 2 14 are fixedly connected to the inner wall of the fixed block 4, and the top walls of the two fixed blocks 4 are fixedly connected to the pin shaft 5; the front and rear parts of the two groups of moving plates 11 are penetrated by the limiting rods 16, and the two ends of the multiple limiting rods 16 are fixedly connected to the inner side walls of the fixed block 4;

[0031] Specifically, when the pin shaft 5 needs to be disassembled, the staff can drive the movable plate 11 to move by pressing the pressure rods 12 on both sides of the fixed block 4. When the movable plate 11 moves, it can drive the respectively connected fixed rods 13 to move, so that the fixed rods 13 can be pulled out from the connecting rods 15. When the fixed rods 13 are pulled out from the connecting rods 15, the limit between the plug block 10 and the connecting rod 15 can be cancelled. Then, the pin shaft 5 is pulled upward to drive the fixed block 4 to move upward. When the fixed block 4 moves upward, it can drive the fixed plug block 10 to move upward, so that the plug block 10 can be pulled out from the connecting rod 15, so as to achieve the disassembly of the pin shaft 5. When the pin shaft 5 needs to be installed, it is only necessary to press the pressure rod 12 again to make the two movable plates 11 approach each other. When the movable plates 11 approach each other, the spring 2 14 can be compressed. When the spring 2 14 is compressed, it will provide an opposite force. Therefore, the pressure rod 12 can be loosened when the plug block 10 is inserted into the connecting rod 15. Under the action of the spring 2 14, the movable plate 11 can be reset and the fixing rod 13 can be inserted into the connecting rod 15 for fixed installation. At the same time, under the action of the limit rod 16, the stability of the movement of the movable plate 11 can be guaranteed, thereby achieving the effect of facilitating the assembly and disassembly of the pin shaft 5 and installing different numbers of pin shafts 5.

[0032] Reference Figure 1 , Figure 2 and Figure 3, the moving mechanism 2 includes a slot 201, and multiple slots 201 are all opened on the front and rear sides of the inner top wall of the moving slot 3. Both sides of the inner bottom wall of the moving slot 3 are slidably connected with moving blocks 202, and the inner walls of the two moving blocks 202 are slidably connected with connecting plates 203. The front and rear sides of the bottom walls of the two connecting plates 203 are fixedly connected with springs 205, and the bottom ends of multiple springs 205 are fixedly connected to the inner bottom wall of the moving block 202. The tops of the two connecting plates 203 penetrate the top wall of the moving block 202 and are fixedly connected to the connecting rod 15. The front and rear walls of the two connecting rods 15 are fixedly connected with blocks 207, and multiple blocks 207 are engaged with the slot 201; the front and rear sides of the inner bottom wall of the moving slot 3 are fixedly connected with positioning rods 206, and the two positioning rods 206 are slidably connected to the moving block 202; guide rods 204 are penetrated on both sides of the two connecting plates 203, and the upper and lower ends of multiple guide rods 204 are fixedly connected to the upper and lower walls of the moving block 202;

[0033] Specifically, by pressing down the connecting rod 15, the connected block 207 can be driven to move downward, so that the block 207 is disengaged from the slot 201. When the block 207 is disengaged, the limit between the block 207 and the slot 201 can be cancelled, and then the connecting rod 15 can be pulled to drive the moving block 202 to move in the moving slot 3, and the moving block 202 can be limited under the action of the positioning rod 206, so as to ensure the stability of the moving block 202 in the moving slot 3, so as to adjust the moving block 202 and the pin shaft 5 connected thereto. When the connecting rod 15 is moved to a suitable position, the connecting rod 15 can be released. Since the connecting rod 15 drives the connecting plate 203 to move downward and compresses the spring 205 when it moves downward, after the connecting rod 15 is released, the connecting rod 15 and the block 207 can be reset under the action of the spring 205, and the block 207 can be inserted into the slot 201 for positioning. At the same time, the connecting plate 203 can be limited under the action of the guide rod 204, thereby ensuring the stability of the up and down movement of the connecting plate 203, thereby achieving the effect of facilitating the adjustment of the position of the pin shaft 5.

[0034] Reference Figure 1 A placement groove 9 is provided in the middle of the top wall of the movable groove 3, and the bottom end of the placement groove 9 penetrates into the movable groove 3;

[0035] Specifically, by providing the placement slot 9, when the number of moving blocks 202 needs to be added or reduced, the staff can directly take the moving blocks 202 through the placement slot 9 to add or reduce, thereby achieving the effect of facilitating the adjustment of the number of moving blocks 202 in the moving slot 3.

[0036] Reference Figure 1 The front and rear sides of the top wall of the base 1 are fixedly connected with electric push rods 6, and the output ends of the two electric push rods 6 are fixedly connected with pressure plates 7; the top wall of the base 1 is fixedly connected with evenly distributed cushion blocks 8;

[0037] Specifically, the electric push rod 6 can drive the pressure plate 7 connected to the output end to move up and down, and when the pressure plate 7 moves downward, the object to be processed can be clamped and fixed; the cushion block 8 can cooperate with the pressure plate 7 to ensure the stability of the object clamping.

[0038] Working principle: In actual use, by pressing the pressure rods 12 on both sides of the fixed block 4, the fixed rod 13 can be driven to move through the movable plate 11. When the fixed rod 13 is pulled out from the connecting rod 15, the limit between the plug block 10 and the connecting rod 15 can be cancelled. Then, the pin shaft 5 together with the plug block 10 can be pulled out from the connecting rod 15 for disassembly. When installation is required, it is only necessary to press the pressure rod 12 again to insert the plug block 10 into the connecting rod 15 for fixing, thereby achieving the effect of facilitating the installation and disassembly of the pin shaft 5 and installing different numbers of pin shafts 5. In addition, by pressing down the connecting rod 15, the block 207 can be driven to disengage from the slot 201, thereby canceling the limit of the block 207 and the slot 201, and then the connecting rod 15 can be pulled to drive the moving block 202 to move in the moving slot 3, so that the position of the moving block 202 and the pin shaft 5 connected thereto can be adjusted. When the connecting rod 15 is moved to a suitable position, the connecting rod 15 can be released, and the connecting rod 15 and the block 207 can be reset and positioned under the action of the spring 205, thereby achieving the effect of facilitating the adjustment of the position of the pin shaft 5.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC four-axis machining fixture, comprising a base (1), characterized in that: A moving mechanism (2) is arranged in the base (1), a moving groove (3) is provided in the middle of the top wall of the base (1), connecting rods (15) are arranged on both sides of the moving groove (3), plug blocks (10) are engaged in the two connecting rods (15), the top ends of the two plug blocks (10) are fixedly connected to the fixed blocks (4), pressure rods (12) are passed through the two sides of the two fixed blocks (4), the close ends of the two groups of pressure rods (12) are fixedly connected to the moving plates (11), the away sides of the two groups of moving plates (11) are fixedly connected to the fixing rods (13), a plurality of the fixing rods (13) are passed through the connecting rods (15), the front and rear parts of the away sides of the two groups of moving plates (11) are fixedly connected to one end of the spring two (14), the other ends of the plurality of the spring two (14) are fixedly connected to the inner wall of the fixed block (4), and the top walls of the two fixed blocks (4) are fixedly connected to the pin shafts (5).

2. A CNC four-axis machining fixture according to claim 1, characterized in that: The moving mechanism (2) comprises a slot (201), wherein a plurality of the slots (201) are arranged on the front and rear sides of the inner top wall of the moving slot (3), both sides of the inner bottom wall of the moving slot (3) are slidably connected with moving blocks (202), the inner walls of the two moving blocks (202) are slidably connected with connecting plates (203), the front and rear sides of the bottom walls of the two connecting plates (203) are fixedly connected with springs one (205), the bottom ends of the plurality of springs one (205) are fixedly connected to the inner bottom wall of the moving block (202), the top ends of the two connecting plates (203) pass through the top wall of the moving block (202) and are fixedly connected to the connecting rod (15), the front and rear walls of the two connecting rods (15) are fixedly connected with slots (207), and the plurality of slots (207) are engaged with the slots (201).

3. The CNC four-axis machining fixture according to claim 1, characterized in that: Limit rods (16) are passed through the front and rear parts of the two groups of movable plates (11), and both ends of the plurality of limit rods (16) are fixedly connected to the inner side walls of the fixed block (4).

4. The CNC four-axis machining fixture according to claim 1, characterized in that: A placement groove (9) is provided in the middle of the top wall of the movable groove (3), and the bottom end of the placement groove (9) penetrates into the movable groove (3).

5. The CNC four-axis machining fixture according to claim 1, characterized in that: The front and rear sides of the top wall of the base (1) are both fixedly connected to electric push rods (6), and the output ends of the two electric push rods (6) are both fixedly connected to pressure plates (7).

6. The CNC four-axis machining fixture according to claim 1, characterized in that: The top wall of the base (1) is fixedly connected with evenly distributed cushion blocks (8).

7. The CNC four-axis machining fixture according to claim 2, characterized in that: Positioning rods (206) are fixedly connected to the front and rear sides of the inner bottom wall of the movable groove (3), and the two positioning rods (206) are slidably connected to the movable block (202).

8. The CNC four-axis machining fixture according to claim 2, characterized in that: Guide rods (204) are passed through both sides of the two connecting plates (203), and the upper and lower ends of the plurality of guide rods (204) are fixedly connected to the upper and lower walls inside the moving block (202).

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