Clamp table for machining mechanical parts

Abstract

The invention relates to the technical field of mechanical part machining, and discloses a mechanical part machining clamp table which comprises a machine tool workbench, the top end of the machine tool workbench is fixedly connected with a fixed base, the top end of the fixed base is fixedly connected with a supporting rod, and the top end of the supporting rod is fixedly connected with a fan-shaped plate. A clamping mechanism is movably connected to the side face of the fan-shaped plate, an adjusting mechanism is movably connected to the interior of the clamping mechanism, and a fixing mechanism is movably connected to the interior of the fan-shaped plate; when a servo motor is started, a driven gear rotates through an output gear, then a movable rack drives a clamping assembly to move, when the clamping assembly moves, a small-size annular part is fixed through the interiors of the three clamping assemblies, and when a large-size annular part is fixed through the interiors of the three clamping assemblies, the clamping assembly is fixed through the interiors of the three clamping assemblies; the annular part is placed on the side face of the first supporting table or the second supporting table or the third supporting table in the clamping assembly to be fixed. The annular part fixing device can be used for fixing annular parts of different sizes.

Description

Technical Field

[0001] This invention relates to the field of mechanical parts processing technology, and more specifically to a fixture table for mechanical parts processing. Background Technology

[0002] Mechanical parts, also known as mechanical components, are the basic elements that make up machinery. They are the individual, inseparable parts that make up machinery and machines. They are also a general term for parts and components. In order to ensure that the dimensional accuracy, shape accuracy and positional accuracy of mechanical parts meet the design requirements and thus guarantee the overall quality of the product, mechanical parts need to be precision machined.

[0003] When machining mechanical parts, precision parts are often machined using machine tools. Because precision machining has strict requirements for the machining accuracy of the workpiece, the clamping direction of the fixture and whether the machining can guarantee the stability of the mechanical parts need to be fully considered. When the fixture cannot guarantee the stability of the mechanical parts during machining, it will directly affect the accuracy of the mechanical parts after machining. The following problems exist in the use of current fixtures.

[0004] Traditionally, when clamping mechanical parts, such as ring-shaped parts, a three-jaw chuck is generally used for clamping and fixing. For example, in a shaft forging finished product dimension inspection device with publication number CN113670179B, the three-jaw chuck fixes the ring-shaped part in the middle to complete the processing work. The three-jaw chuck is adjusted according to the diameter of the ring-shaped part. If the ring-shaped part is too large and exceeds the maximum opening distance of the three-jaw chuck, the processing work cannot be carried out. Moreover, the center of the three-jaw chuck is hollow. When clamping the ring-shaped part, applying a downward force to the ring-shaped part will cause the ring-shaped part to continue to move into the three-jaw chuck, thus causing processing errors.

[0005] Therefore, the existing three-jaw chuck fixture has the following technical problems: 1. It can only clamp and fix parts with curved outer surfaces, such as ring-shaped parts and tubular parts of conventional size, and is not suitable for fixing and machining large-diameter ring-shaped parts. 2. The part to be machined lacks support below, and will move downward during machining, causing machining errors. 3. The triangular chuck can only clamp ring-shaped parts with curved outer surfaces and cannot clamp square parts. Therefore, when the shape of the clamped part changes from ring-shaped to square, the three-jaw chuck needs to be removed and a bolt clamp is used for clamping and fixing. Therefore, changing the clamp will waste machining time. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a fixture table for machining mechanical parts, so as to solve the technical problems in the background art that it is impossible to clamp ring-shaped parts of different diameters and that the three-jaw chuck can only clamp ring-shaped parts and cannot clamp square parts.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fixture table for machining mechanical parts, comprising a machine tool worktable, a fixed base fixedly connected to the top of the machine tool worktable, a support rod fixedly connected to the top of the fixed base, a sector plate fixedly connected to the top of the support rod, a clamping mechanism movably connected to the side of the sector plate, an adjusting mechanism movably connected inside the clamping mechanism, a fixing mechanism movably connected inside the sector plate, and a ring-shaped component and a square component placed at the top of the clamping mechanism; The clamping mechanism includes a servo motor that can provide power. An output gear is fixedly connected to the top of the servo motor. A driven gear meshes with the side of the output gear. A moving rack meshes with the side of the driven gear. A clamping assembly meshes with the top of the moving rack.

[0008] In a preferred embodiment, there are three support rods, which are distributed at equal angles above the fixed base with the center of the fixed base as the center. Each support rod has a fan-shaped plate fixedly connected to its top end. A clamping mechanism is movably connected to the connection point of the three fan-shaped plates. A fixing mechanism is movably connected to the center of the interior of one of the fan-shaped plates. The fixing mechanism and one of the adjusting mechanisms are in the same straight line position.

[0009] In a preferred embodiment, a triangular rod is movably connected inside the movable rack, and the three corners of the triangular rod are fixedly connected to the support rod. Limiting strips are fixedly connected to both sides of the clamping assembly, and a sliding groove adapted to the limiting strip is opened on the side of the fan-shaped plate.

[0010] In a preferred embodiment, there are three movable racks and three limiting bars. A support shaft is movably sleeved inside the driven gear. A support disk is fixedly connected to the top of the support shaft. The top of the support disk is fixedly connected to the bottom of the sector plate.

[0011] In a preferred embodiment, the clamping assembly includes a slider that engages with a movable rack, a first support platform being fixedly connected to the top of the slider, a second support platform being fixedly connected to the top of the first support platform, and a third support platform being fixedly connected to the top of the second support platform.

[0012] In a preferred embodiment, the adjusting mechanism includes a movable block that can slide within the clamping assembly. The movable block is internally threaded with a threaded rod, the top end of which is fixedly connected to an upper rotating wheel. A connecting block is fixedly connected to the side of the movable block, a top block is fixedly connected to the side of the connecting block away from the movable block, and a support block is fixedly connected to the bottom end of the top block.

[0013] In a preferred embodiment, the fixing mechanism includes a fixing frame located inside and fixedly connected to the sector plate. A movable plate is movably connected inside the fixing frame. A screw is threadedly connected inside the movable plate. A side wheel is fixedly connected to the side of the screw away from the movable plate. A fixing shaft is fixedly connected to the side of the movable plate away from the side wheel. A support plate is movably sleeved on the side of the fixing shaft. The top end of the fixing frame is on the same plane as the top end of the sector plate.

[0014] The technical effects and advantages of this invention are as follows: 1. When the servo motor of the present invention starts, it causes the driven gear to rotate through the output gear, which in turn causes the moving rack to drive the clamping assembly to move. When the clamping assembly moves, for small-sized ring-shaped parts, they are fixed inside the three clamping assemblies. For large-sized ring-shaped parts, the ring-shaped parts are fixed on the side of the first support platform, the second support platform or the third support platform inside the clamping assembly. The present invention can fix ring-shaped parts of different sizes. 2. When the ring-shaped part is clamped by the clamping components of this invention, the ring-shaped part is placed inside the three clamping components. At this time, the ring-shaped part is located above the support block, and the outer side of the ring-shaped part is in contact with the top block. The top block fixes the ring-shaped part, while the support block supports the ring-shaped part to prevent the ring-shaped part from moving downward during processing. The upper rotating wheel can be rotated to make the threaded rod drive the moving block to move up and down, thereby making the top block and the support block move up and down to adjust the height of the ring-shaped part and support the parts to be processed, reducing processing errors. 3. When clamping and fixing square parts, the present invention adjusts the position of the clamping mechanism according to the width of the square parts, so that the three top blocks contact the three sides of the square parts, the support plate rotates and contacts the side of the fixing frame, and at this time the side wheel is rotated to make the screw rotate. When the screw rotates, the moving plate drives the support plate to move through the fixed shaft. The support plate contacts the last side of the square parts, thereby fixing the square parts. The present invention can fix the components of ring parts and square parts separately without disassembling and replacing the fixtures, thus avoiding wasting processing time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the clamping part of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure below the sector plate of the present invention.

[0018] Figure 4 This is a schematic diagram of the clamping mechanism of the present invention.

[0019] Figure 5This is a schematic diagram of the clamping assembly structure of the present invention.

[0020] Figure 6 This is a schematic diagram of the internal structure of the adjustment mechanism of the present invention.

[0021] Figure 7 This is a schematic diagram of the overall structure of the fixing mechanism of the present invention.

[0022] Figure 8 This is a cross-sectional structural diagram of the fixing mechanism of the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of the present invention when clamping the square part.

[0024] The attached figures are labeled as follows: 1. Machine tool worktable; 2. Fixed base; 3. Support rod; 4. Sector plate; 5. Triangular rod; 6. Clamping mechanism; 601. Servo motor; 602. Output gear; 603. Driven gear; 604. Moving rack; 605. Limiting bar; 606. Clamping assembly; 6061. Slider; 6062. First support platform; 6063. Second support platform; 6064. Third support platform; 607. Support shaft; 608. Support plate; 7. Adjustment mechanism; 701. Moving block; 702. Threaded rod; 703. Upper rotating wheel; 704. Connecting block; 705. Top block; 706. Support block; 8. Fixing mechanism; 801. Fixing frame; 802. Moving plate; 803. Screw; 804. Side rotating wheel; 805. Fixed shaft; 806. Support plate; 9. Ring-shaped part; 10. Square-shaped part. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The jig table for machining mechanical parts involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 9This invention provides a fixture table for machining mechanical parts, including a machine tool worktable 1. A fixed base 2 is fixedly connected to the top of the machine tool worktable 1. A support rod 3 is fixedly connected to the top of the fixed base 2. A sector plate 4 is fixedly connected to the top of the support rod 3. A clamping mechanism 6 is movably connected to the side of the sector plate 4. An adjustment mechanism 7 is movably connected inside the clamping mechanism 6. A fixing mechanism 8 is movably connected inside the sector plate 4. A ring-shaped part 9 and a square part 10 are placed at the top of the clamping mechanism 6. There are three support rods 3, which are distributed at equal angles above the fixed base 2 with the center of the fixed base as the center. A sector plate 4 is fixedly connected to the top of each support rod 3. The clamping mechanism 6 is movably connected to the connection of the three sector plates 4. A fixing mechanism 8 is movably connected to the center inside one of the sector plates 4. The fixing mechanism 8 and one of the adjustment mechanisms 7 are in the same straight line position.

[0027] In this embodiment, during clamping, the three clamping mechanisms 6 can move synchronously to perform processing. The three support rods 3 are distributed at equal angles, therefore the sector plate 4 above the support rods 3 and the clamping mechanisms 6 and adjusting mechanisms 7 on the sides of the sector plate 4 are also distributed at equal angles. The fixing mechanism 8 is located in the middle of the upper side of one sector plate 4. There is only one fixing mechanism 8, therefore the fixing mechanism 8 and one adjusting mechanism 7 are in a straight line position. Figure 3 As shown, when clamping the square part 10, a more stable clamping and fixing can be achieved.

[0028] Reference Figure 3 as well as Figure 4 The clamping mechanism 6 includes a servo motor 601 that provides power. An output gear 602 is fixedly connected to the top of the servo motor 601. A driven gear 603 meshes with the side of the output gear 602. A moving rack 604 meshes with the side of the driven gear 603. A clamping assembly 606 meshes with the top of the moving rack 604. A triangular rod 5 is movably connected inside the moving rack 604. The three corners of the triangular rod 5 are fixedly connected to the support rod 3. Limiting strips 605 are fixedly connected to both sides of the clamping assembly 606. A sliding groove adapted to the limiting strip 605 is opened on the side of the sector plate 4. There are three moving racks 604 and three limiting strips 605. A support shaft 607 is movably sleeved inside the driven gear 603. A support plate 608 is fixedly connected to the top of the support shaft 607. The top of the support plate 608 is fixedly connected to the bottom of the sector plate 4.

[0029] In this embodiment, when the ring-shaped component 9 needs to be clamped and fixed, the servo motor 601 starts, causing the output gear 602 to drive the driven gear 603 to rotate. When the driven gear 603 rotates, the three moving racks 604 on its side move, thereby causing the clamping assembly 606 above the three moving racks 604 to move. When the clamping assembly 606 moves, it can clamp the ring-shaped component 9, while the triangular rod 5 can limit the movement direction of the moving racks 604, maintain the stability of the moving racks 604 when they move, and the moving racks 604 stop moving when they reach the corner of the triangular rod 5. The device continues to move, preventing the moving rack 604 from disengaging from the driven gear 603. Support rods 3 are connected to the three corners of the triangular rod 5 to maintain its stability. The toothed grooves on the side of the moving rack 604 mesh with the side of the driven gear 603, and the oblique toothed groove at the top of the moving rack 604 meshes with the oblique toothed groove at the bottom of the clamping assembly 606, allowing for stable movement. The upper part of the support plate 608 contacts the bottom of the sector plate 4. Therefore, the sector plate 4 is supported by the support plate 608 and the support rods 3, ensuring its stability.

[0030] Reference Figure 4 and Figure 5 The clamping assembly 606 includes a slider 6061 that meshes with the moving rack 604. A first support platform 6062 is fixedly connected to the top of the slider 6061. A second support platform 6063 is fixedly connected to the top of the first support platform 6062. A third support platform 6064 is fixedly connected to the top of the second support platform 6063.

[0031] In this embodiment, ring-shaped parts 9 of different diameters can be placed above the slider 6061, the first support platform 6062, or the second support platform 6063. When the clamping assembly 606 moves outward as a whole, it can be limited and fixed by the first support platform 6062, the second support platform 6063, or the third support platform 6064. The sides of the clamping assembly 606, the second support platform 6063, and the third support platform 6064 away from the adjustment mechanism 7 are all curved surfaces to avoid damage to the ring-shaped parts 9 when in contact.

[0032] Reference Figure 6 The adjusting mechanism 7 includes a movable block 701 that can slide within the clamping assembly 606. The movable block 701 is internally threaded with a threaded rod 702. An upper rotating wheel 703 is fixedly connected to the top end of the threaded rod 702. A connecting block 704 is fixedly connected to the side of the movable block 701. A top block 705 is fixedly connected to the side of the connecting block 704 away from the movable block 701. A support block 706 is fixedly connected to the bottom end of the top block 705.

[0033] In this embodiment, when the upper rotating wheel 703 rotates, the threaded rod 702 rotates and drives the moving block 701 to move up and down. When the moving block 701 moves up and down, it drives the top block 705 and the support block 706 below it to move up and down through the connecting block 704. After the support block 706 is moved to a suitable position, the ring-shaped part 9 is placed above the support block 706 to limit the height of the ring-shaped part 9, which facilitates processing. In addition, the threaded rod 702 is movably connected to the inside of the third support platform 6064. The threaded rod 702 will only rotate inside the third support platform 6064 and will not move in the vertical direction. This is the prior art in this field.

[0034] Reference Figure 7 , Figure 8 as well as Figure 9 The fixing mechanism 8 includes a fixing frame 801 located inside and fixedly connected to the sector plate 4. A movable plate 802 is movably connected inside the fixing frame 801. A screw 803 is threadedly connected inside the movable plate 802. A side wheel 804 is fixedly connected to the side of the screw 803 away from the movable plate 802. A fixing shaft 805 is fixedly connected to the side of the movable plate 802 away from the side wheel 804. A support plate 806 is movably sleeved on the side of the fixing shaft 805. The top of the fixing frame 801 is on the same plane as the top of the sector plate 4. The movable plate 802 is T-shaped. A limiting groove is provided on the side of the fixing frame 801 away from the side wheel 804 to prevent the screw 803 from being unscrewed.

[0035] In this embodiment, when fixing the square component 10, the support plate 806 rotates upward around the fixing shaft 805. After rotating, the support plate 806 contacts the side of the fixing frame 801. The rotation of the support plate 806 also rotates the side wheel 804, which in turn drives the screw 803 to rotate, causing the moving plate 802 to move the support plate 806. As the support plate 806 moves, it contacts the last short side of the square component 10, thereby fixing the square component 10. Figure 9 As shown, all four sides of the square part 10 are fixed to maintain the stability of its processing and thus improve the processing accuracy.

[0036] The working principle of the present invention is as follows: When clamping and fixing the ring-shaped part 9, depending on the diameter of the ring-shaped part 9, if the diameter is small, the ring-shaped part 9 can be placed above the internal support blocks 706 of the three clamping mechanisms 6 to contact the outer side of the ring-shaped part 9 for clamping and fixing. If the diameter is large, the ring-shaped part 9 can be placed on different support platforms on the outer side of the clamping mechanism 6 to contact the inner side of the ring-shaped part 9 for clamping and fixing. When clamping and fixing a small ring-shaped part 9, first adjust the height of the support block 706 according to the height of the ring-shaped part 9. When adjusting the height of the support block 706, rotate the upper rotating wheel 703. The rotation of the upper rotating wheel 703 causes the threaded rod 702 to rotate and drive the moving block 701 to move up and down. When the moving block 701 moves up and down, it drives the top block 705 and the support block 706 below it to move up and down through the connecting block 704. A hole is provided on the side of the third support platform 6064 that contacts the top block 705 for the connecting block 704 to move up and down. After moving the support block 706 to a suitable position, place the ring-shaped part 9 on top of any one of the support blocks 706, and the side of the ring-shaped part 9 contacts the top block 705 above the support block 706. When the ring-shaped part 9 is placed above the support block 706, the servo motor 601 starts and drives the output gear 602 to rotate. When the output gear 602 rotates, it drives the driven gear 603 to rotate. When the driven gear 603 rotates, it causes the moving rack 604 to move. When the moving rack 604 moves, it drives the clamping assembly 606 above it to move. When the three clamping assemblies 606 move inward synchronously, the three clamping assemblies 606 drive the top block 705 on their side to move inward synchronously. The three top blocks 705 clamp and fix the ring-shaped part 9 on its inner side. At this time, subsequent processing work can be carried out. When processing a large ring-shaped part 9, the ring-shaped part 9 is placed above the slider 6061, above the first support platform 6062, or above the second support platform 6063 according to its size. After the ring-shaped part 9 is placed, the servo motor 601 controls the output gear 602 to reverse, thereby causing the clamping assembly 606 to move outward as a whole. When the ring-shaped part 9 is placed above the slider 6061, the first support platform 6062 moves outward and fixes it. When it is placed above the first support platform 6062, the second support platform 6063 fixes it. When it is placed above the second support platform 6063, the third support platform 6064 fixes it. When fixing the square part 10, the square part 10 is arranged according to... Figure 9 The square component 10 is placed in a manner such that the top blocks 705 in the adjusting mechanisms 7 on both sides of the long side of the square component 10 contact the long side of the square component 10, and the other top block 705 contacts one of the short sides of the square component 10. This causes the support plate 806 to rotate upward around the fixed shaft 805. After rotating, the support plate 806 contacts the side of the fixed frame 801. After rotating, the support plate 806 rotates the side wheel 804, which drives the screw 803 to rotate and causes the moving plate 802 to move the support plate 806. When the support plate 806 moves, it contacts the last short side of the square component 10, thereby fixing the square component 10. Figure 9 As shown, all four sides of the square part 10 are fixed, which can prevent the square part 10 from moving during processing, maintain its processing stability, and thus improve processing accuracy.

[0037] In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixture table for machining mechanical parts, comprising a machine tool worktable (1), characterized in that: The top of the machine tool worktable (1) is fixedly connected to a fixed base (2), the top of the fixed base (2) is fixedly connected to a support rod (3), the top of the support rod (3) is fixedly connected to a sector plate (4), the side of the sector plate (4) is movably connected to a clamping mechanism (6), the inside of the clamping mechanism (6) is movably connected to an adjustment mechanism (7), the inside of the sector plate (4) is movably connected to a fixing mechanism (8), and the top of the clamping mechanism (6) is provided with a ring-shaped part (9) and a square part (10); the clamping mechanism (6) includes a servo motor (601) that can provide power, the top of the servo motor (601) is fixedly connected to an output gear (602), the side of the output gear (602) is meshed with a driven gear (603), the side of the driven gear (603) is meshed with a moving rack (604), and the top of the moving rack (604) is meshed with a clamping assembly (606).

2. The fixture table for machining mechanical parts according to claim 1, characterized in that: There are three support rods (3). The three support rods (3) are distributed at equal angles above the fixed base (2) with the center of the fixed base (2) as the center. Each support rod (3) has a fan-shaped plate (4) fixedly connected to its top. The connection of the three fan-shaped plates (4) is movably connected to a clamping mechanism (6). The center of the inside of one of the fan-shaped plates (4) is movably connected to a fixing mechanism (8). The fixing mechanism (8) and one of the adjusting mechanisms (7) are in the same straight line position.

3. The fixture table for machining mechanical parts according to claim 1, characterized in that: The movable rack (604) is internally connected to a triangular rod (5), and the three corners of the triangular rod (5) are fixedly connected to the support rod (3). Limiting strips (605) are fixedly connected to both sides of the clamping assembly (606), and the side of the fan-shaped plate (4) is provided with a sliding groove that matches the limiting strip (605).

4. A fixture table for machining mechanical parts according to claim 3, characterized in that: The number of the movable rack (604) and the limiting strip (605) are both three. The driven gear (603) is movably sleeved with a support shaft (607). The top end of the support shaft (607) is fixedly connected to a support disk (608). The top end of the support disk (608) is fixedly connected to the bottom end of the sector plate (4).

5. A fixture table for machining mechanical parts according to claim 1, characterized in that: The clamping assembly (606) includes a slider (6061) that engages with a movable rack (604), a first support platform (6062) is fixedly connected to the top of the slider (6061), a second support platform (6063) is fixedly connected to the top of the first support platform (6062), and a third support platform (6064) is fixedly connected to the top of the second support platform (6063).

6. A fixture table for machining mechanical parts according to claim 1, characterized in that: The adjustment mechanism (7) includes a movable block (701) that can slide within the clamping assembly (606). The movable block (701) is internally threaded with a threaded rod (702). An upper rotating wheel (703) is fixedly connected to the top end of the threaded rod (702). A connecting block (704) is fixedly connected to the side of the movable block (701). A top block (705) is fixedly connected to the side of the connecting block (704) away from the movable block (701). A support block (706) is fixedly connected to the bottom end of the top block (705).

7. A fixture table for machining mechanical parts according to claim 1, characterized in that: The fixing mechanism (8) includes a fixing frame (801) located inside the sector plate (4) and fixedly connected to the sector plate (4). A movable plate (802) is movably connected inside the fixing frame (801). A screw (803) is threaded inside the movable plate (802). A side wheel (804) is fixedly connected to the side of the screw (803) away from the movable plate (802). A fixing shaft (805) is fixedly connected to the side of the movable plate (802) away from the side wheel (804). A support plate (806) is movably sleeved on the side of the fixing shaft (805). The top of the fixing frame (801) is on the same plane as the top of the sector plate (4).

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