Rapid clamping workpiece fixing device of milling machine

Abstract

The utility model discloses a quick clamping workpiece fixing device of a milling machine, which belongs to the technical field of milling machine workpiece fixing and is characterized by comprising a bottom plate, a centering pulling mechanism is arranged at the top of the bottom plate, and clamping mechanisms are arranged on the front side and the rear side of the top of the bottom plate; the centering pulling mechanism comprises two connecting blocks, two connecting rods, two rotating shafts, a pulling plate and a rotating rod, the tops of the connecting blocks and the top of the pulling plate are both in movable contact with the bottoms of the connecting rods, and the bottom of the rotating shaft on the left side penetrates through the connecting rods and is fixedly connected with the tops of the connecting blocks; the bottom of the right rotating shaft penetrates through the connecting rod and is fixedly connected with the top of the pulling plate, so that the problems that a clamping plate and a limiting plate provided in the prior art are inconvenient to center and clamp a workpiece, the clamping deviation of the workpiece is easily caused, the relative positions of a milling cutter and the workpiece are deviated, and finally, the size deviation and the form and location tolerance of a machined part are out of tolerance are caused; and the machining precision is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of milling machine workpiece fixing, especially relates to a quick clamping workpiece fixing device of milling machine. BACKGROUND

[0002] Milling machine workpiece fixing refers to the operation of reliably positioning and clamping workpieces during milling machine processing using special fixtures or devices to ensure that the workpieces maintain correct positions and postures relative to tools and milling machine worktables during processing to prevent displacement, vibration or rotation, thereby ensuring processing precision and quality.

[0003] The existing milling machine fixing device mainly has two types, one is a rotary air pressure fixing device, which is simple and labor-saving when used, but has the disadvantages of large size and slow fixing, and the other is a manual mechanical fixing, which needs manual fixing and dismounting of the workpiece, and in order to ensure the fixing strength, it is generally very laborious to install and fasten, and it is not convenient to quickly adjust the clamps to fix the workpiece according to the size of the workpiece.

[0004] The existing patent (publication number: CN218193890U) discloses a workpiece fixing device for milling machine processing, which can drive the wedge-shaped block to slide up and down through the air cylinder, and then drive the two clamping plates to move to the sides at the same time, so that the clamping plate pushes the workpiece to be fixed between the limiting plate, the fixing mode is simple and firm, and the one-slot groove is formed on the surface of the limiting plate and is slidably connected with the fixed screw rod installed on the surface of the workbench, so that the distance between the limiting plate and the corresponding clamping plate can be adjusted according to the size of the workpiece, and the clamping aperture can be quickly adjusted according to the size of the workpiece.

[0005] In view of the above problems, the existing patent provides a solution, but the clamping plate and the limiting plate in the above-mentioned patent are inconvenient for centering and clamping the workpiece, which can easily cause the workpiece to be clamped to deviate, the relative position of the milling cutter and the workpiece can deviate, and finally the size deviation of the processed parts, the form and position tolerance can be out of tolerance, and the processing precision can be affected.

[0006] Therefore, a quick clamping workpiece fixing device of milling machine is provided. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a quick clamping workpiece fixing device of milling machine, which can solve the problem that the clamping plate and the limiting plate in the existing patent are inconvenient for centering and clamping the workpiece, which can easily cause the workpiece to be clamped to deviate, the relative position of the milling cutter and the workpiece can deviate, and finally the size deviation of the processed parts, the form and position tolerance can be out of tolerance, and the processing precision can be affected.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a quick clamping workpiece fixing device of milling machine, including the bottom plate, the top of bottom plate is provided with the centering pull mechanism, the front side and rear side of bottom plate top all are provided with clamping mechanism,

[0009] The centering pull mechanism includes two connecting blocks, two connecting rods, two rotating shafts, a pull plate and a rotating rod, the top of the connecting block and the top of the pull plate are in movable contact with the bottom of the connecting rod, the bottom of the left rotating shaft passes through the connecting rod and is fixedly connected with the top of the connecting block, the bottom of the right rotating shaft passes through the connecting rod and is fixedly connected with the top of the pull plate, the surface of the rotating shaft is in movable contact with the inside of the connecting rod, and the left side of the rotating rod is rotationally connected with the right side of the pull plate.

[0010] Preferably, the right side of the top of the bottom plate is fixedly connected with a fixed block, and the rotating rod is screwedly connected in the inside of the fixed block.

[0011] Preferably, the right side of the rotating rod is fixedly connected with an internal hexagonal block, and the internal hexagonal block is made of high-strength metal.

[0012] Preferably, the front side and the rear side of the top of the bottom plate are fixedly connected with support strips, and the bottom of the pull plate is in movable contact with the top of the support strip.

[0013] Preferably, the clamping mechanism comprises a clamping plate, a slot and a sliding block, one side of the clamping plate close to the connecting block is fixedly connected with the connecting block, the slot is formed in the inside of the clamping plate, and the top of the sliding block is fixedly connected with the bottom of the clamping plate.

[0014] Preferably, the top of the bottom plate is provided with a sliding groove, the sliding block is slidably connected in the inside of the sliding groove, the right side of the sliding block is rotationally connected with a plurality of ball bearings, the plurality of ball bearings are three in number and are uniformly distributed on the right side of the sliding block, and the surface of the ball bearing is in movable contact with the right side of the inner wall of the sliding groove.

[0015] Preferably, V-shaped clamping blocks are arranged between opposite sides of the two clamping plates, the opposite sides of the two V-shaped clamping blocks are fixedly connected with plug blocks, the plug blocks are movably inserted in the inside of the slot, and the top of the plug block is fixedly connected with a pull ring.

[0016] Preferably, the bottom of the bottom plate is fixedly connected with mounting racks, the mounting racks are four in number and are symmetrically distributed on the bottom of the bottom plate, a screw is movably arranged in the inside of the mounting rack, and the number of the screw is two.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1、The application sets up the centering pulling mechanism, so that the rotating shaft drives the pull plate and the connecting rod to move when the rotating shaft rotates, thereby making the connecting block, the clamping plate, the sliding block and the V-shaped clamping block move in centering, so that the workpiece can be conveniently and stably clamped and centered, and then the center line of the bottom plate is aligned and installed with the milling cutter head, so that the milling cutter head can conveniently and accurately mill the workpiece.

[0019] 2、The application sets up the clamping mechanism, so that the clamping plate and the V-shaped clamping block can be conveniently and flexibly used, thereby conveniently and stably clamping and centering the rectangular workpiece and the columnar workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the quick clamping workpiece fixing device of the milling machine of the utility model;

[0021] Figure 2 It is the three-dimensional exploded view of the plug-in block and the plug-in slot in the utility model;

[0022] Figure 3 It is the three-dimensional structure schematic view of the right side of the sliding block in the utility model;

[0023] Figure 4 It is the three-dimensional structure schematic view of the right side of the fixed block in the utility model;

[0024] Figure 5 It is the three-dimensional exploded view of the rotating shaft and the connecting rod in the utility model.

[0025] In the drawing, 1, bottom plate; 2, sliding groove; 3, V-shaped clamping block; 4, centering pulling mechanism; 401, connecting block; 402, connecting rod; 403, rotating shaft; 404, pull plate; 405, rotating shaft; 5, support strip; 6, mounting frame; 7, screw; 8, clamping mechanism; 801, clamping plate; 802, plug-in slot; 803, sliding block; 9, plug-in block; 10, pull ring; 11, ball; 12, inner hexagonal block; 13, fixed block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figures 1-5 The utility model provides technical schemes:

[0028] The application discloses a quick clamping workpiece fixing device of a milling machine, which comprises a bottom plate 1, the top of the bottom plate 1 is provided with a centering pulling mechanism 4, and the front side and the rear side of the top of the bottom plate 1 are provided with clamping mechanisms 8.

[0029] The centering pulling mechanism 4 comprises two connecting blocks 401, two connecting rods 402, two rotating shafts 403, a pulling plate 404 and a rotating rod 405, the top of the connecting block 401 and the top of the pulling plate 404 are in movable contact with the bottom of the connecting rod 402, the bottom of the left rotating shaft 403 penetrates through the connecting rod 402 and is fixedly connected with the top of the connecting block 401, the bottom of the right rotating shaft 403 penetrates through the connecting rod 402 and is fixedly connected with the top of the pulling plate 404, the surface of the rotating shaft 403 is in movable contact with the inside of the connecting rod 402, and the left side of the rotating rod 405 is rotationally connected with the right side of the pulling plate 404.

[0030] In the embodiment, the bottom plate 1 is first moved to the bottom of a milling machine processing position, so that the center line of the bottom plate 1 is aligned with a milling cutter head, then the mounting frame 6 is locked on the workbench of the milling machine by using the screws 7 in the mounting frame 6, and the mounting is ensured to be stable, when a columnar workpiece is clamped, the columnar workpiece is arranged between the two V-shaped clamping blocks 3, the inner hexagonal block 12 is rotated by using an external electric tool, the rotating rod 405 is rotated, the rotating rod 405 is threadedly connected with the fixing block 13, the pulling plate 404 is pulled to slide on the supporting strip 5, the connecting block 401 is moved to the middle through the rotating shaft 403 and the connecting rod 402, the clamping plate 801 is synchronously moved with the V-shaped clamping block 3, the V-shaped clamping block 3 is in close contact with the surface of the columnar workpiece, and the columnar workpiece is tightly clamped, when a rectangular workpiece is clamped, the plug 9 is pulled out from the inside of the insertion slot 802 by pulling the pull ring 10, the V-shaped clamping block 3 is separated, the sliding block 803 at the bottom of the clamping plate 801 is smoothly slid in the sliding groove 2 in cooperation with the ball 11, and the two clamping plates 801 are moved to the middle under the action of the centering pulling mechanism 4, so that the rectangular workpiece is stably clamped, the subsequent precision milling processing of the workpiece is facilitated, the clamping plate and the limiting plate in the prior art are not convenient for centering clamping of the workpiece, the workpiece is prone to clamping deviation, the relative position of the milling cutter and the workpiece is prone to deviation, and finally the size deviation of the processed part, the form tolerance and the position tolerance are out of tolerance, and the machining precision is affected.

[0031] Specifically, as shown in Figure 1 the right side of the top of the bottom plate 1 is fixedly connected with the fixing block 13, and the rotating rod 405 is threadedly connected in the inside of the fixing block 13.

[0032] Specifically, as shown in Figure 4 the right side of the rotating rod 405 is fixedly connected with the inner hexagonal block 12, and the inner hexagonal block 12 is made of high-strength metal.

[0033] Specifically, as shown in Figure 1As shown, the front side and the rear side of the top of the bottom plate 1 are fixedly connected with the support bars 5, and the bottom of the pull plate 404 is movably connected with the top of the support bars 5.

[0034] In this embodiment: by the internal threaded connection of the rotating rod 405 and the fixed block 13, when the rotating rod 405 is rotated by inserting the internal hexagonal block 12 into the external power tool, the rotating rod 405 can be moved to the right, and the rotating rod 405 can be conveniently rotated through the rotating connection between the rotating rod 405 and the pull plate 404. The pull plate 404 can be moved to drive the connecting rod 402 to move, thereby centering and pulling the connecting block 401, the clamping plate 801 and the V-shaped clamping block 3, and the support bar 5 can stably support the pull plate 404, so that the movement of the pull plate 404 is more stable, and the internal hexagonal block 12 made of high-strength metal material can prolong its service life.

[0035] Specifically, as shown in Figure 2 The clamping mechanism 8 includes a clamping plate 801, a slot 802 and a sliding block 803. The side of the clamping plate 801 close to the connecting block 401 is fixedly connected with the connecting block 401. The slot 802 is formed in the inside of the clamping plate 801. The top of the sliding block 803 is fixedly connected with the bottom of the clamping plate 801.

[0036] Specifically, as shown in Figure 1 And Figure 2 The top of the bottom plate 1 is provided with a sliding groove 2. The sliding block 803 is slidably connected in the inside of the sliding groove 2. The right side of the sliding block 803 is rotatably connected with three balls 11, which are evenly distributed on the right side of the sliding block 803. The surface of the balls 11 is movably connected with the right side of the inner wall of the sliding groove 2.

[0037] In this embodiment: by the sliding of the sliding block 803 in the inside of the sliding groove 2, the sliding of the sliding block 803, the clamping plate 801 and the clamping plate 801 is facilitated. The movement of the sliding block 803 is smoother through the movable connection of the balls 11 with the right side of the inner wall of the sliding groove 2, so that the clamping plate 801 and the V-shaped clamping block 3 move smoothly.

[0038] Specifically, as shown in Figure 2 The opposite sides of the two clamping plates 801 are provided with V-shaped clamping blocks 3. The opposite sides of the two V-shaped clamping blocks 3 are fixedly connected with plug blocks 9, which are movably inserted in the inside of the slot 802. The top of the plug block 9 is fixedly connected with a pull ring 10.

[0039] Specifically, as shown in Figure 1 The bottom of the bottom plate 1 is fixedly connected with mounting racks 6. The number of the mounting racks 6 is four and they are symmetrically distributed on the bottom of the bottom plate 1. The inside of the mounting rack 6 is movably provided with screws 7. The number of the screws 7 is two.

[0040] In this embodiment: by pulling the pull ring 10 upwards, the plug-in block 9 is pulled out from the inside of the slot 802, the V-shaped clamp block 3 and the clamp plate 801 are separated, the clamp plate 801 is convenient for stable centering and clamping of the rectangular workpiece, and the bottom plate 1 is fixed by screwing the screw 7 with the position to be installed on the bottom plate 1.

[0041] Working principle: first, move the bottom plate 1 to the bottom of the milling machine processing station, so that the center line of the bottom plate 1 is aligned with the milling cutter head, then use the screw 7 in the mounting bracket 6 to lock the bottom plate 1 on the milling machine workbench, four mounting brackets 6 are symmetrically distributed at the bottom of the bottom plate 1, and each mounting bracket 6 has two screws 7, which ensures the stability and firmness of the device installation, and lays a foundation for accurate centering processing. When you need to clamp a cylindrical workpiece, place the cylindrical workpiece between the opposite sides of the two V-shaped clamp blocks 3, then insert the internal hex block 12 into the external electric tool, since the internal hex block 12 is fixedly connected with the rotating rod 405, rotating the external electric tool can drive the rotating rod 405 to rotate, the rotating rod 405 is screwedly connected in the fixed block 13, and the rotating rod 405 rotates to drive the pull plate 404 to move. The pull plate 404 slides on the top of the supporting strip 5, the supporting strip 5 stably supports the pull plate 404, and the stability of the pull plate 404 is ensured. When the pull plate 404 moves, the right rotating shaft 403 pulls the connecting rod 402, and the other side of the connecting rod 402 is connected with the connecting block 401 through the left rotating shaft 403. In this way, the pulling of the connecting rod 402 moves the connecting block 401 to the middle. Since the clamp plate 801 is fixedly connected with the connecting block 401, and the V-shaped clamp block 3 is connected with the clamp plate 801 through the plug-in block 9, the movement of the connecting block 401 drives the clamp plate 801 and the V-shaped clamp block 3 to move to the middle at the same time, so that the V-shaped clamp block 3 is in close contact with the surface of the cylindrical workpiece, and the stable centering and clamping of the cylindrical workpiece are realized. If you want to clamp a rectangular workpiece, pull the pull ring 10 upwards to pull the plug-in block 9 out of the slot 802, so that the V-shaped clamp block 3 is separated from the clamp plate 801. At this time, the clamp plate 801 can directly clamp the rectangular workpiece. The sliding block 803 at the bottom of the clamp plate 801 slides in the sliding groove 2, and the three evenly distributed rolling balls 11 on the right side of the sliding block 803 are in movable contact with the inner wall on the right side of the sliding groove 2, so as to reduce the friction when the sliding block 803 slides, and ensure the smoothness of the movement of the clamp plate 801 and the V-shaped clamp block 3. Under the action of the centering pulling mechanism 4, the two clamp plates 801 move to the middle until they are in close contact with the rectangular workpiece, so as to realize the stable centering and clamping of the rectangular workpiece. The milling cutter head can conveniently and accurately mill the workpiece, and the problems of the clamping plate and the limiting plate in the prior art, which are not convenient for centering and clamping of the workpiece and are easy to cause the workpiece to be clamped to deviate, so that the relative position of the milling cutter and the workpiece deviates, and finally leads to the problems of size deviation of the processed parts, shape tolerance and position tolerance, and affects the machining precision.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick-clamping workpiece fixing device for a milling machine, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a centering pulling mechanism (4), and the front and rear sides of the top of the base plate (1) are provided with clamping mechanisms (8); The centering pulling mechanism (4) includes two connecting blocks (401), two connecting rods (402), two rotating shafts (403), a pull plate (404), and a rotating rod (405). The top of the connecting block (401) and the top of the pull plate (404) are in movable contact with the bottom of the connecting rod (402). The bottom of the left rotating shaft (403) passes through the connecting rod (402) and is fixedly connected to the top of the connecting block (401). The bottom of the right rotating shaft (403) passes through the connecting rod (402) and is fixedly connected to the top of the pull plate (404). The surface of the rotating shaft (403) is in movable contact with the inside of the connecting rod (402). The left side of the rotating rod (405) is rotatably connected to the right side of the pull plate (404).

2. The quick-clamping workpiece fixing device for a milling machine according to claim 1, characterized in that: A fixing block (13) is fixedly connected to the right side of the top of the base plate (1), and the rotating rod (405) is threadedly connected inside the fixing block (13).

3. The quick-clamping workpiece fixing device for a milling machine according to claim 1, characterized in that: The right side of the rotating rod (405) is fixedly connected to an internal hexagon block (12), which is made of high-strength metal.

4. The quick-clamping workpiece fixing device for a milling machine according to claim 1, characterized in that: The bottom plate (1) is fixedly connected to the front and rear sides of the top, and the bottom of the pull plate (404) is in contact with the top of the support strip (5).

5. The quick-clamping workpiece fixing device for a milling machine according to claim 1, characterized in that: The clamping mechanism (8) includes a clamping plate (801), a slot (802), and a slider (803). The clamping plate (801) is fixedly connected to the connecting block (401) on the side near the connecting block (401). The slot (802) is opened inside the clamping plate (801). The top of the slider (803) is fixedly connected to the bottom of the clamping plate (801).

6. A quick-clamping workpiece fixing device for a milling machine according to claim 5, characterized in that: The top of the base plate (1) is provided with a groove (2), and the slider (803) is slidably connected inside the groove (2). A ball bearing (11) is rotatably connected to the right side of the slider (803). There are three balls bearing (11) evenly distributed on the right side of the slider (803). The surface of the ball bearing (11) is in active contact with the right side of the inner wall of the groove (2).

7. A quick-clamping workpiece fixing device for a milling machine according to claim 5, characterized in that: A V-shaped clamp (3) is provided between the opposite sides of the two clamps (801), and a plug (9) is fixedly connected to the opposite side of the two V-shaped clamps (3). The plug (9) is movably inserted into the inside of the slot (802), and a pull ring (10) is fixedly connected to the top of the plug (9).

8. A quick-clamping workpiece fixing device for a milling machine according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to a mounting bracket (6). There are four mounting brackets (6) symmetrically distributed on the bottom of the base plate (1). The mounting brackets (6) are equipped with two screws (7).

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