Fixing clamp for machining

Abstract

The utility model discloses a stationary fixture for machining, which comprises a base, a workbench is arranged at the top end of the base, a frame is arranged at the bottom end in the workbench, and a driving mechanism is arranged at the top end of the frame. According to the fixing clamp for machining, the air cylinder, the first hinge rod, the connecting rod, the second hinge rod, the toothed plate, the half gear and the connecting plate are arranged, the air cylinder is started, the air cylinder drives the toothed plate to descend through the connecting plate, the toothed plate is matched with the half gear, and the second hinge rod is fixedly connected with the half gear; a toothed plate descends to enable a half-hinge gear to drive a second hinge rod to move, so that a connecting rod can drive a limiting plate to move towards the middle, the limiting plate clamps and fixes a workpiece at the top end of the workbench, and the workpiece is prevented from sliding and shifting accidentally when machined; the problems that a limiting plate cannot be conveniently driven to move to clamp a workpiece, and use is easily affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a fixing fixture used for mechanical processing. Background Art

[0002] Machining refers to the process of changing the shape, size or performance of a workpiece through a mechanical device. In the machining manufacturing industry, fixtures play a very important role. With the continuous development of science and technology, the workpieces processed in the field of machining are gradually becoming more complex. The fixture can limit and fix the mechanical workpiece to be processed to prevent the workpiece from shifting during processing.

[0003] There are still some problems with the fixing fixtures used in common machining. For example, when using the fixture, the limit plate needs to be driven to fix the workpiece, but some of them use manual drive components or the drive mechanism is relatively complicated, which can easily affect the clamping effect.

[0004] Therefore, we proposed a fixing fixture for machining to improve the above problems. Utility Model Content

[0005] The utility model aims to provide a fixing fixture used in mechanical processing, so as to solve the problem in the above background technology that it is inconvenient to drive the limit plate to move so that the limit plate clamps the workpiece, which easily affects the use.

[0006] To achieve the above object, the utility model provides the following technical solution: a fixing fixture used for mechanical processing, comprising a base, a workbench is arranged at the top of the base, a frame is arranged at the bottom of the workbench, and a driving mechanism is arranged at the top of the frame;

[0007] The driving mechanism includes a cylinder, a tooth plate and a half-page gear. The cylinder is installed at the bottom end of the frame, a connecting plate is installed at the top of the cylinder, a tooth plate is installed at the top of the connecting plate, connecting frames are fixedly connected to both sides of the top of the frame, connecting rods are provided on both sides of the top of the workbench, a first hinged rod is movably hinged at the edge between the connecting rod and the connecting frame, a second hinged rod is movably hinged between the connecting frame and the connecting rod, and a half-page gear is fixedly connected to the side of the second hinged rod close to the middle.

[0008] Preferably, tooth blocks are processed on both sides of the tooth plate, and tooth blocks of the same size on both sides of the tooth plate are processed on one side of the half-page gear close to the middle, and the tooth plate and the half-page gear cooperate with each other.

[0009] Preferably, one side of the half-page gear is movably hinged to the top end of the connecting frame, and two groups of the half-page gears are provided.

[0010] Preferably, movable rods are fixedly connected on both sides of the bottom end of the connecting plate, an extension rod is fixedly connected on one side of the movable rod close to the outside, a limiting slider is fixedly connected on one side of the extension rod close to the outside, a rolling groove is provided inside the limiting slider, a ball bearing is arranged inside the rolling groove, and limiting sliding grooves are provided on both sides of the frame.

[0011] Preferably, the limiting sliding block slides up and down inside the limiting sliding groove, and the ball rolls inside the rolling groove.

[0012] Preferably, the movable rods are arranged on both sides inside the frame, and the movable rods are symmetrically distributed with respect to the connecting plate.

[0013] Preferably, a mounting block is fixedly connected to one side of the connecting rod near the middle, a limiting plate is provided on one side of the mounting block near the middle, a protective pad is provided on the inner side wall of the limiting plate, a fixing block is fixedly connected to one side of the limiting plate near the outside, a mounting groove is provided inside the fixing block, fixing holes are provided at the front end of the mounting block and the inside of the fixing block, and mounting bolts are provided inside the fixing holes.

[0014] Preferably, the mounting block is embedded in the mounting groove, and the fixing block is installed on the outside of the mounting block through fixing holes and mounting bolts.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the fixing fixture used in the mechanical processing not only makes it easier for the limit plate to clamp the workpiece, improves the stability of the tooth plate, but also makes it easier to disassemble the limit plate;

[0016] (1) A cylinder, a first hinge rod, a connecting rod, a second hinge rod, a toothed plate, a half-leaf gear and a connecting plate are provided. The cylinder is started, and the cylinder drives the toothed plate to descend through the connecting plate. Since the toothed plate and the half-leaf gear cooperate with each other, and the second hinge rod and the half-leaf gear are fixedly connected, the descending of the toothed plate can enable the half-leaf gear to drive the second hinge rod to move, so that the connecting rod can drive the limit plate to move toward the middle, so that the limit plate clamps and fixes the workpiece on the top of the workbench to prevent the workpiece from accidentally sliding and deviating during processing;

[0017] (2) By providing a movable rod, an extension rod, a limit slide groove, a limit slider and a ball bearing, when the connecting plate is raised or lowered, the extension rod at the bottom of the movable rod will drive the limit slider to slide inside the limit slide groove, thereby improving the stability of the extension rod and the movable rod in the lifting and lowering of the connecting plate and the tooth plate, preventing the tooth blocks on both sides of the tooth plate and the tooth blocks outside the half-page gear from being misaligned, and the ball bearing inside the groove can reduce the friction between the limit slide groove and the limit slider;

[0018] (3) By providing a fixing block, a fixing hole, a mounting groove, a mounting bolt and a mounting block, when the limit plate needs to be disassembled and replaced, the mounting bolt is unscrewed from the inside of the fixing hole, so that the mounting block loses its fixation inside the mounting groove. After losing its fixation, the fixing block can be removed from the outside of the mounting block to disassemble the limit plate. When disassembling and replacing the limit plate, limit plates of different shapes can be selected according to needs, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of an enlarged front cross-sectional structure of a fixing block of the utility model;

[0021] Figure 3 It is a schematic diagram of an enlarged front cross-sectional structure of a tooth plate of the utility model;

[0022] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged cross-section structure at point A in the middle.

[0023] In the figure: 1. base; 2. cylinder; 3. frame; 4. workbench; 5. connecting frame; 6. first hinge rod; 7. connecting rod; 8. second hinge rod; 9. fixing block; 10. protective pad; 11. limit plate; 12. tooth plate; 13. half-page gear; 14. connecting plate; 15. movable rod; 16. fixing hole; 17. mounting groove; 18. mounting bolt; 19. mounting block; 20. rolling groove; 21. extension rod; 22. limit slide groove; 23. limit slider; 24. ball bearing. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1: Please refer to Figure 1-4 A fixing fixture used for machining comprises a base 1, a workbench 4 is arranged at the top of the base 1, a frame 3 is arranged at the bottom of the workbench 4, and a driving mechanism is arranged at the top of the frame 3;

[0026] The driving mechanism includes a cylinder 2, a tooth plate 12 and a half-page gear 13. The cylinder 2 is installed at the bottom end of the frame 3, a connecting plate 14 is installed at the top of the cylinder 2, and a tooth plate 12 is installed at the top of the connecting plate 14. The two sides of the top of the frame 3 are fixedly connected with a connecting frame 5, and the two sides of the top of the workbench 4 are provided with a connecting rod 7. A first hinge rod 6 is movably hinged at the edge between the connecting rod 7 and the connecting frame 5, and a second hinge rod 8 is movably hinged between the connecting frame 5 and the connecting rod 7. The half-page gear 13 is fixedly connected to the side of the second hinge rod 8 close to the middle;

[0027] Tooth blocks are processed on both sides of the tooth plate 12, and tooth blocks of the same size on both sides of the tooth plate 12 are processed on one side close to the middle of the half-page gear 13. The tooth plate 12 and the half-page gear 13 cooperate with each other, and one side of the half-page gear 13 is movably hinged to the top of the connecting frame 5. Two groups of half-page gears 13 are provided;

[0028] Specifically, Figure 1 and Figure 3 As shown, the cylinder 2 is started, and the cylinder 2 drives the tooth plate 12 to descend through the connecting plate 14. Since the tooth plate 12 and the half-page gear 13 cooperate with each other, and the second hinge rod 8 and the half-page gear 13 are fixedly connected, the descent of the tooth plate 12 can make the half-page gear 13 drive the second hinge rod 8 to move, so that the connecting rod 7 can drive the limit plate 11 to move toward the middle, so that the limit plate 11 clamps and fixes the workpiece on the top of the workbench 4 to prevent the workpiece from accidentally sliding and deviating during processing.

[0029] Embodiment 2: Both sides of the bottom end of the connecting plate 14 are fixedly connected with movable rods 15, and one side of the movable rod 15 close to the outside is fixedly connected with an extension rod 21, and one side of the extension rod 21 close to the outside is fixedly connected with a limit slider 23, and a rolling groove 20 is provided inside the limit slider 23, and a ball 24 is provided inside the rolling groove 20. Both sides of the frame 3 are provided with limit slide grooves 22, and the limit slide 23 slides up and down inside the limit slide groove 22, and the ball 24 rolls inside the rolling groove 20. The movable rods 15 are arranged on both sides of the frame 3, and the movable rods 15 are symmetrically distributed with respect to the connecting plate 14;

[0030] Specifically, Figure 1 and Figure 4 As shown, when the connecting plate 14 is raised or lowered, the extension rod 21 at the bottom end of the movable rod 15 will drive the limiting slider 23 to slide inside the limiting slide groove 22, thereby improving the stability of the extension rod 21 and the movable rod 15 in the lifting and lowering through the connecting plate 14 and the tooth plate 12, preventing the tooth blocks on both sides of the tooth plate 12 and the tooth blocks outside the half-page gear 13 from being misaligned, and the ball 24 inside the rolling groove 20 can reduce the friction between the limiting slide groove 22 and the limiting slider 23.

[0031] Embodiment 3: A mounting block 19 is fixedly connected to one side of the connecting rod 7 near the middle, a limiting plate 11 is provided on one side of the mounting block 19 near the middle, a protective pad 10 is provided on the inner side wall of the limiting plate 11, a fixing block 9 is fixedly connected to one side of the limiting plate 11 near the outside, a mounting groove 17 is provided inside the fixing block 9, a fixing hole 16 is provided at the front end of the mounting block 19 and the fixing block 9, a mounting bolt 18 is provided inside the fixing hole 16, the mounting block 19 is embedded in the mounting groove 17, and the fixing block 9 is installed on the outside of the mounting block 19 through the fixing hole 16 and the mounting bolt 18;

[0032] Specifically, Figure 1 and Figure 2 As shown, when the limit plate 11 needs to be disassembled and replaced, the mounting bolt 18 is unscrewed from the inside of the fixing hole 16, so that the mounting block 19 loses its fixation in the mounting groove 17. After losing its fixation, the fixing block 9 can be removed from the outside of the mounting block 19 to disassemble the limit plate 11. When disassembling and replacing the limit plate 11, limit plates 11 of different shapes can be selected according to needs, thereby improving the flexibility of the device.

[0033] Working principle: When the utility model is in use, the mounting bolt 18 is screwed out from the inside of the fixing hole 16, so that the mounting block 19 loses its fixation in the mounting groove 17. After losing its fixation, the fixing block 9 can be removed from the outside of the mounting block 19 to disassemble the limit plate 11. When disassembling and replacing the limit plate 11, different shapes of limit plates 11 can be selected according to needs, thereby improving the flexibility of the device and clamping and fixing workpieces of different shapes. After replacement, the cylinder 2 is started, and the cylinder 2 drives the tooth plate 12 to descend through the connecting plate 14. Since the tooth plate 12 and the half-page gear 13 cooperate with each other, and the second hinge rod 8 and the half-page gear 13 are fixedly connected, the tooth plate 12 can descend. The half-page gear 13 drives the second hinged rod 8 to move, so that the connecting rod 7 can drive the limit plate 11 to move toward the middle, so that the limit plate 11 clamps and fixes the workpiece on the top of the workbench 4 to prevent the workpiece from accidentally sliding and deviating during processing. When the cylinder 2 drives the connecting plate 14 to rise and fall, the extension rod 21 at the bottom of the movable rod 15 will drive the limit slider 23 to slide inside the limit slide groove 22, thereby improving the stability of the extension rod 21 and the movable rod 15 rising and falling through the connecting plate 14 and the tooth plate 12, and preventing the tooth blocks on both sides of the tooth plate 12 and the tooth blocks outside the half-page gear 13 from being misaligned. The ball 24 inside the rolling groove 20 can reduce the friction between the limit slide groove 22 and the limit slider 23.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fixing fixture for machining, comprising a base (1), characterized in that: A workbench (4) is arranged at the top of the base (1), a frame (3) is arranged at the bottom of the workbench (4), and a driving mechanism is arranged at the top of the frame (3); The driving mechanism comprises a cylinder (2), a tooth plate (12) and a half-page gear (13); the cylinder (2) is installed at the bottom end of the frame (3); a connecting plate (14) is installed at the top of the cylinder (2); a tooth plate (12) is installed at the top of the connecting plate (14); a connecting frame (5) is fixedly connected to both sides of the top of the frame (3); a connecting rod (7) is arranged on both sides of the top of the workbench (4); a first hinge rod (6) is movably hinged at the edge between the connecting rod (7) and the connecting frame (5); a second hinge rod (8) is movably hinged between the connecting frame (5) and the connecting rod (7); and a half-page gear (13) is fixedly connected to the side of the second hinge rod (8) close to the middle.

2. A fixing fixture for machining according to claim 1, characterized in that: Tooth blocks are machined on both sides of the tooth plate (12), and tooth blocks of the same size as on both sides of the tooth plate (12) are machined on one side of the half-page gear (13) close to the middle, and the tooth plate (12) and the half-page gear (13) cooperate with each other.

3. A fixing fixture for machining according to claim 1, characterized in that: One side of the half-page gear (13) is movably hinged to the top end of the connecting frame (5), and two groups of the half-page gear (13) are provided.

4. A fixing fixture for machining according to claim 1, characterized in that: The two sides of the bottom end of the connecting plate (14) are fixedly connected with movable rods (15), the side of the movable rod (15) close to the outside is fixedly connected with an extension rod (21), the side of the extension rod (21) close to the outside is fixedly connected with a limit slider (23), a rolling groove (20) is provided inside the limit slider (23), a ball (24) is arranged inside the rolling groove (20), and the two sides of the frame (3) are provided with limit slide grooves (22).

5. A fixing fixture for machining according to claim 4, characterized in that: The limiting sliding block (23) slides up and down inside the limiting sliding groove (22), and the ball (24) rolls inside the rolling groove (20).

6. A fixing fixture for machining according to claim 4, characterized in that: The movable rods (15) are arranged on both sides inside the frame (3), and the movable rods (15) are symmetrically distributed with respect to the connecting plate (14).

7. The fixing fixture for machining according to claim 1, characterized in that: A mounting block (19) is fixedly connected to one side of the connecting rod (7) near the middle, a limiting plate (11) is provided on one side of the mounting block (19) near the middle, a protective pad (10) is provided on the inner wall of the limiting plate (11), a fixing block (9) is fixedly connected to one side of the limiting plate (11) near the outside, a mounting groove (17) is provided inside the fixing block (9), fixing holes (16) are provided at the front ends of the mounting block (19) and the fixing block (9), and mounting bolts (18) are provided inside the fixing holes (16).

8. A fixing fixture for machining according to claim 7, characterized in that: The mounting block (19) is embedded in the mounting groove (17), and the fixing block (9) is installed on the outside of the mounting block (19) through the fixing hole (16) and the mounting bolt (18).

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