Mirror spark machine workpiece clamp

Abstract

The utility model relates to the technical field of machined part clamps, in particular to a machined part clamp of a mirror spark machine. According to the technical scheme, the device comprises a base, the interior of the base is rotationally connected with a worm, the bottom of the base is slidably connected with two sets of telescopic blocks, the interior of the base is rotationally connected with a two-way threaded rod, the middle of the two-way threaded rod is fixedly connected with a worm gear, and the worm gear is meshed with the worm; and a plurality of groups of first rotating blocks are connected into each group of sliding blocks in a sliding manner. When the device is used, the worm is meshed with the worm gear, so that the device has a self-locking function, the situation that errors are generated during machining due to looseness after fixation is prevented, traditional bolt fixation is replaced, the clamp is installed more quickly, the base is more quickly parallel to the T-shaped groove on the workbench through extrusion of the telescopic block, and the machining precision is improved. The leveling time is greatly saved, workers can be put into production as soon as possible, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing piece fixture technical field, concretely is a mirror surface spark machine processing piece fixture. BACKGROUND

[0002] Spark machine, also called as electrical discharge machine (EDM, Electrical Discharge Machining), is a kind of equipment using electric spark discharge principle to carry out metal processing, and spark machine can process high hardness, high tenacity, high strength die material and difficult-to-machine material such as high-temperature alloy, and is also widely applied in aerospace field, in addition, high-precision spark machine can also process high-precision, high-surface-quality parts, such as screw thread, worm wheel and other complex curved surface, complex cavity processing, and workpiece is clamped using fixture during spark machine processing, to carry out processing, but during actual use, similar spark machine processing piece fixture still has many defects, for example, existing mirror surface spark machine processing piece fixture is still fixed on the upper portion of workbench by bolt, and bolt fixing also needs to be manually aligned, four bolts are needed for fixing during installation, it is more cumbersome, greatly influence work efficiency. UTILITARIAN CONTENT

[0003] The utility model aims at providing a mirror surface spark machine processing piece fixture to solve the problems in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a mirror surface spark machine processing piece fixture, including base, the inside rotation of base is connected with worm, the bottom of base is connected with two groups of telescopic blocks, the inside rotation of base is connected with two-way screw rod, the middle part of two-way screw rod is fixedly connected with worm wheel, worm wheel and worm are mutually engaged, the upper surface of base is connected with two groups of sliding blocks, the inside of each group sliding block is connected with a plurality of groups of first rotation block.

[0005] By using the spark machine workpiece clamp, first, the insert block below the base is inserted into the T-shaped groove inside the spark machine workbench, then the first rotating shaft is rotated using a wrench, the rotation of the first rotating shaft rotates the worm together, in the process of rotating the worm, the worm gear engaged with it will rotate together, driving the bidirectional threaded rod to rotate, in the process of rotating the bidirectional threaded rod, the two groups of fixed plates on the outer wall of the bidirectional threaded rod begin to move to both sides, simultaneously driving the expansion block to move towards the inside of the T-shaped groove, in the process of moving, the wedge is no longer limited by the insert block, and will be stretched out by the elastic force of the expansion spring to fill the inside of the T-shaped groove, so that the base is better fixed on the workbench, the self-locking function is realized by the meshing of the worm and the worm gear, preventing loosening after being fixed, so as to cause errors during processing, replacing the traditional bolt fixing, so that the clamp is installed faster, through the extrusion of the expansion block, the base is more quickly parallel to the T-shaped groove on the workbench, greatly saving the leveling time, enabling the staff to quickly engage in production, and improving the work efficiency. When the electric spark machine is used, irregular shaped parts will be encountered, and the edges of the irregular shaped parts are mostly irregular, so that they cannot produce enough contact surface with the clamp, thereby causing insufficient friction, and easily deviating during processing to cause defective products, when the irregular shaped part is encountered, first, the second rotating shaft is rotated to drive the two groups of sliding blocks above the base to move towards the center of the base, so that the part is preliminarily fixed, then the weak part of the part is observed to rotate the third rotating block arranged at the part, the rotation of the third rotating block causes the ball to press the cam groove on the outer wall of the sliding rod, so that it moves towards the part, the sliding rod drives the first rotating block to move forward, since the first rotating block is rotatably connected to one side of the sliding rod, it can deviate when encountering the vertex during movement, so that the part is more closely attached, so that the contact area of the part and the clamp is further increased, the second rotating block is arranged in the first rotating block, which can better adaptively adjust with the rotation of the third rotating block, so that the first rotating block and the second rotating block can naturally find the most suitable position for clamping the workpiece, so that the clamping force can be uniformly distributed on the workpiece, thereby reducing the deformation of the workpiece and ensuring that the workpiece remains stable during processing.

[0006] As a preferred technical scheme of the utility model, the bottom of the base is fixedly connected with an insert block, each group of the expansion blocks are slidably connected in the insert block, two groups of wedges are slidably connected in each group of the expansion blocks, and an inclined surface in a trapezoidal shape is formed on one side of the wedge.

[0007] As a preferred technical scheme of the utility model, the bottom of each group of the wedges is fixedly connected with a plurality of groups of expansion springs, the other end of the expansion spring is fixedly connected in the expansion block, and the upper surface of each group of the expansion blocks is fixedly connected with a fixed plate.

[0008] As a preferred technical scheme of the utility model, the upper end of the fixed plate is slidably connected to the outer wall of the bidirectional threaded rod, one side of the base is rotatably connected to a first rotating shaft, and the worm penetrates through the outer wall of the base and is fixedly connected to the first rotating shaft.

[0009] As a preferred technical scheme of the utility model, a plurality of groups of semicircular grooves are formed in the interior of the sliding block, the semicircular grooves are semicircular, the first rotating block is slidably connected to the interior of the sliding block through the semicircular grooves, and the interior of each group of the base is provided with a second rotating shaft.

[0010] As a preferred technical scheme of the utility model, the sliding block is slidably connected to the upper surface of the base through the second rotating shaft, one side of each group of the sliding block is rotatably connected to a plurality of groups of third rotating blocks, the interior of each group of the third rotating blocks is fixedly connected to a plurality of balls, one end of the first rotating block is rotatably connected to a sliding rod, and the sliding rod is slidably connected to the interior of the third rotating block.

[0011] As a preferred technical scheme of the utility model, a cam groove is formed in the outer wall of one end of the sliding rod, one end of the sliding rod is fixedly connected to a limiting plate, the interior of the first rotating block is fixedly connected to a central shaft, the interior of the first rotating block is rotatably connected to a second rotating block, an axle sleeve is formed in the interior of the second rotating block, the axle sleeve is sleeved on the outer wall of the central shaft, and the balls are matched with the cam groove.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. When the spark machine workpiece clamp is used, the device is self-locked through the meshing of the worm and the worm gear, so that loosening after fixing is prevented, errors during machining are caused, the traditional bolt fixing is replaced, the clamp is installed more quickly, the base is more quickly parallel to the T-shaped groove on the workbench through the extrusion of the telescopic block, the leveling time is greatly saved, the staff can be quickly put into production, and the work efficiency is improved.

[0014] 2. The first rotating block is provided, can be offset when the top point is encountered in the moving process, is more close to the part in a larger degree, the contact area of the part and the clamp is further increased, the second rotating block is further provided in the interior of the first rotating block, can better adaptively adjust along with the rotation of the third rotating block, the first rotating block and the second rotating block can naturally find the most suitable position for clamping the workpiece, the clamping force can be uniformly distributed on the workpiece, so that the deformation of the workpiece is reduced, and the workpiece is kept stable during the machining process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view structural schematic view of the utility model;

[0016] Figure 2 It is a cutting structure schematic view of the utility model.

[0017] Figure 3 It is a first rotating block explosion structure schematic view of the utility model.

[0018] In the figure: 1, base; 2, sliding block; 3, first rotating shaft; 4, plug block; 5, telescopic block; 6, wedge block; 7, telescopic spring; 8, fixed plate; 9, bidirectional threaded rod; 10, worm; 11, worm wheel; 12, second rotating shaft; 13, third rotating block; 14, ball; 15, sliding rod; 16, limit plate; 17, first rotating block; 18, central shaft; 19, second rotating block; 20, shaft sleeve; 21, semicircular groove; 22, cam groove. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model is further explained below in combination with the drawings and specific embodiments.

[0020] Embodiment one

[0021] As Figure 1 , Figure 2 and Figure 3 , the utility model provides a mirror surface spark machining part clamp, including base 1, the inside rotationally connected with worm 10 of base 1, the bottom of base 1 is slidably connected with two groups of telescopic blocks 5, the inside rotationally connected with bidirectional threaded rod 9 of base 1, the middle part of bidirectional threaded rod 9 is fixedly connected with worm wheel 11, worm wheel 11 and worm 10 are mutually engaged, the upper surface of base 1 is slidably connected with two groups of sliding blocks 2, the inside of each group of sliding blocks 2 is slidably connected with a plurality of groups of first rotating blocks 17.

[0022] The bottom of base 1 is fixedly connected with plug block 4, each group of telescopic blocks 5 is slidably connected in the inside of plug block 4, the inside of each group of telescopic blocks 5 is slidably connected with two groups of wedge blocks 6, and the side of wedge block 6 is provided with inclined plane in trapezoidal shape.

[0023] The bottom of each group of wedge blocks 6 is fixedly connected with a plurality of groups of telescopic springs 7, the other end of telescopic spring 7 is fixedly connected in the inside of telescopic block 5, and the upper surface of each group of telescopic blocks 5 is fixedly connected with fixed plate 8.

[0024] The upper end of fixed plate 8 is slidably connected on the outer wall of bidirectional threaded rod 9, one side of base 1 is rotationally connected with first rotating shaft 3, and worm 10 penetrates the outer wall of base 1 and is fixedly connected with first rotating shaft 3.

[0025] The working principle of the mirror surface spark machine workpiece clamp based on the embodiment 1 is as follows: when the spark machine workpiece clamp is used, first, the plug block 4 below the base 1 is inserted into the T-shaped groove in the spark machine workbench, then the first rotating shaft 3 is rotated by using a wrench, the rotation of the first rotating shaft 3 drives the worm 10 to rotate, in the process of the rotation of the worm 10, the worm wheel 11 engaged with the worm 10 rotates, driving the bidirectional threaded rod 9 to rotate, in the process of the rotation of the bidirectional threaded rod 9, the two groups of fixed plates 8 on the outer wall of the bidirectional threaded rod 9 start to move to the two sides, simultaneously driving the telescopic block 5 to move to the inside of the T-shaped groove, in the process of the movement, the wedge block 6 is no longer limited by the plug block 4, and is stretched out by the elastic force of the telescopic spring 7 to fill the inside of the T-shaped groove, so that the base 1 is better fixed on the workbench, the self-locking function is realized by the engagement of the worm 10 and the worm wheel 11, so as to prevent loosening after being fixed, thereby avoiding errors caused by loosening during processing, replacing the traditional bolt fixing, so that the clamp is installed more quickly, the base 1 is more quickly parallel to the T-shaped groove on the workbench by the extrusion of the telescopic block 5, the leveling time is greatly saved, the workers can be quickly put into production, and the work efficiency is improved.

[0026] Embodiment two

[0027] As shown in Figure 1 , Figure 2 and Figure 3 , the mirror surface spark machine workpiece clamp provided by the utility model further comprises: a plurality of groups of semicircular grooves 21 are arranged in the inside of the sliding block 2, the semicircular grooves 21 are semicircular, the first rotating block 17 is slidably connected to the inside of the sliding block 2 through the semicircular grooves 21, a second rotating shaft 12 is arranged in the inside of each group of bases 1, the sliding block 2 is slidably connected to the upper surface of the base 1 through the second rotating shaft 12, a plurality of groups of third rotating blocks 13 are rotatably connected to one side of each group of sliding blocks 2, a plurality of groups of rolling balls 14 are fixedly connected to the inside of each group of third rotating blocks 13, a sliding rod 15 is rotatably connected to one end of the first rotating block 17, the sliding rod 15 is slidably connected to the inside of the third rotating block 13, a cam groove 22 is arranged on the outer wall of one end of the sliding rod 15, a limiting plate 16 is fixedly connected to one end of the sliding rod 15, a central shaft 18 is fixedly connected to the inside of the first rotating block 17, a second rotating block 19 is rotatably connected to the inside of the first rotating block 17, an axle sleeve 20 is arranged in the inside of the second rotating block 19, the axle sleeve 20 is sleeved on the outer wall of the central shaft 18, and the rolling ball 14 is matched with the cam groove 22.

[0028] In the embodiment, as shown in Figure 1As shown, irregular shaped parts will be encountered in electric spark machining, and the edges of the irregular shaped parts are mostly irregular, so that they cannot produce enough contact surface with the fixture, resulting in insufficient friction, easy to shift in the process and cause defective products, when encountering irregular shaped parts, first through the second rotating shaft 12 rotation, to drive the two groups of slide blocks 2 above the base 1 to the center of the base 1, so that it is preliminarily fixed to the part, then by observing the part clamping weak place, to rotate the third rotating block 13 provided therein, through the rotation of the third rotating block 13, the ball 14 is pressed against the cam groove 22 of the outer wall of the sliding rod 15, so that it moves towards the part, the sliding rod 15 drives the first rotating block 17 to move forward, since the first rotating block 17 is rotatably connected to one side of the sliding rod 15, it can be offset when encountering the vertex in the moving process, so that it is more close to the part, so that the contact area of the part and the fixture is further increased, the first rotating block 17 is further provided with the second rotating block 19, which can better adaptively adjust with the rotation of the third rotating block 13, the first rotating block 17 and the second rotating block 19 will naturally find the most suitable position for clamping the workpiece, so that the clamping force can be uniformly distributed on the workpiece, thereby reducing the deformation of the workpiece and ensuring that the workpiece remains stable during machining.

[0029] The above specific embodiments are only several preferred technical solutions of the present application, and based on the technical solutions of the present application and the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A mirror surface spark machine workpiece clamp comprising a base (1), characterized in that: The inside of the base (1) is rotationally connected with a worm (10), the bottom of the base (1) is slidingly connected with two groups of telescopic blocks (5), the inside of the base (1) is rotationally connected with a bidirectional threaded rod (9), the middle of the bidirectional threaded rod (9) is fixedly connected with a worm wheel (11), the worm wheel (11) is meshed with the worm (10), the upper surface of the base (1) is slidingly connected with two groups of sliding blocks (2), the inside of each group of sliding blocks (2) is slidingly connected with several groups of first rotating blocks (17).

2. A mirror-surface spark machine workpiece clamp according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected with an insertion block (4), the inside of each group of telescopic blocks (5) is slidingly connected in the insertion block (4), the inside of each group of telescopic blocks (5) is slidingly connected with two groups of wedge blocks (6), the side of the wedge block (6) is provided with an inclined surface in the shape of a trapezoid.

3. A mirror-surface spark machine workpiece clamp according to claim 2, characterized in that: The bottom of each group of wedge blocks (6) is fixedly connected with several groups of telescopic springs (7), the other end of the telescopic spring (7) is fixedly connected in the telescopic block (5), the upper surface of each group of telescopic blocks (5) is fixedly connected with a fixed plate (8).

4. A mirror-surface spark machine workpiece clamp according to claim 3, characterized in that: The upper end of the fixed plate (8) is slidingly connected to the outer wall of the bidirectional threaded rod (9), one side of the base (1) is rotationally connected with a first rotating shaft (3), the worm (10) penetrates the outer wall of the base (1) and is fixedly connected with the first rotating shaft (3).

5. A mirror-surface spark machine workpiece clamp according to claim 4, characterized in that: The inside of the sliding block (2) is provided with several groups of semicircular grooves (21), the semicircular groove (21) is semicircular, the first rotating block (17) is slidingly connected in the inside of the sliding block (2) through the semicircular groove (21), the inside of each group of base (1) is provided with a second rotating shaft (12).

6. A mirror-surface spark machine workpiece clamp according to claim 5, characterized in that: Each group of sliding blocks (2) is slidingly connected to the upper surface of the base (1) through the second rotating shaft (12), one side of each group of sliding blocks (2) is rotationally connected with several groups of third rotating blocks (13), the inside of each group of third rotating blocks (13) is fixedly connected with a ball (14), one end of the first rotating block (17) is rotationally connected with a sliding rod (15), the sliding rod (15) is slidingly connected in the inside of the third rotating block (13).

7. A mirror-surface spark machine workpiece clamp according to claim 6, characterized in that: The outer wall of one end of the sliding rod (15) is provided with a cam groove (22), one end of the sliding rod (15) is fixedly connected with a limiting plate (16), the inside of the first rotating block (17) is fixedly connected with a central shaft (18), the inside of the first rotating block (17) is rotationally connected with a second rotating block (19), the inside of the second rotating block (19) is provided with a shaft sleeve (20), the shaft sleeve (20) is sleeved on the outer wall of the central shaft (18), the ball (14) is matched with the cam groove (22).

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