Multi-workpiece clamping and pressing mechanism of double-station milling machine

Abstract

The invention discloses a multi-workpiece clamping and pressing mechanism of a double-station milling machine, and belongs to the technical field of milling machines. The multi-workpiece clamping and pressing mechanism is arranged, the truss rod is erected above the workbench, the workpieces are directly pressed on the surface of the workbench from the tops through the multiple pressing assemblies arranged on the truss rod, the left side face and the right side face of each workpiece can be exposed, the double-station milling machine can machine the left side face and the right side face of each workpiece at a time, and the machining efficiency of the milling machine is improved; meanwhile, repeated clamping is avoided, and the machining precision of the workpiece is further improved; through the arrangement of the multiple sets of downward pressing assemblies, multiple workpieces can be clamped at the same time, a milling machine can machine the multiple workpieces at the same time, the machining efficiency is improved, movement of the downward pressing assemblies on the truss rods can be achieved through rotation of the rotating gears, and therefore the positions of the downward pressing assemblies can be adjusted according to the sizes of the workpieces; and workpieces of different specifications can be conveniently machined, and the applicability of the equipment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of milling machines, and in particular relates to a multi-workpiece clamping and pressing mechanism for a double-station milling machine. Background Art

[0002] At present, most milling machines use single-piece clamping when performing milling processing on workpieces, and usually need to use a bench vise or a pressure plate to clamp the workpiece. When this clamping method is used on a double-station milling machine to process the left and right sides of the workpiece at the same time, the left and right sides of the workpiece will be blocked by the clamp, making it difficult to process and shape them in one go. Repeated clamping is required, resulting in long clamping time, low production efficiency, and high processing cost. In addition, once the axial size of the workpiece changes, the milling machine fixture usually needs to be redesigned and manufactured, which increases the design and manufacturing cost of the fixture and the production preparation cycle. Summary of the invention

[0003] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a multi-workpiece clamping and pressing mechanism for a double-station milling machine.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions: a double-station milling machine multi-workpiece clamping and pressing mechanism, comprising a truss rod, a lower through slot is provided at the middle position of the truss rod, the lower through slot passes through the truss rod up and down, the left and right sides of the upper end of the truss rod are provided with inverted cone surfaces, a horizontal mounting plate is provided at the bottom of the right side of the truss rod, a rack is provided on the horizontal mounting plate, and the rack is arranged parallel to the lower through slot;

[0005] The truss rod is provided with a plurality of groups of downward pressing assemblies, each group of the downward pressing assemblies includes a cross frame plate, a right positioning block and a left mounting plate, the cross frame plate is arranged on the upper surface of the truss rod and are slidably connected to each other, the right positioning block is fixedly connected to the right end of the cross frame plate, the left mounting plate is fixedly connected to the left side of the cross frame plate, the right positioning block includes a trapezoidal block that cooperates with the inverted conical surface in the truss rod, the right positioning block is fitted with the inverted conical surface on the right side of the truss rod through the trapezoidal block, a rotating gear is provided on the side of the trapezoidal block away from the inverted conical surface, the rotating gear is rotatably connected to the trapezoidal block, and at the same time meshes with a rack arranged on the horizontal mounting plate;

[0006] A downward pressing oil cylinder is arranged in the middle position of the cross frame plate, and the extended end of the downward pressing oil cylinder passes through the lower through slot on the truss rod and extends to the lower side of the truss rod.

[0007] Preferably, a clamping cylinder is provided on the left mounting plate, and a clamping block is fixedly connected to the protruding end of the clamping cylinder and cooperates with the inverted cone surface on the left side of the truss rod.

[0008] Preferably, a pressure plate is provided on the protruding end of the downward pressure cylinder.

[0009] Preferably, a hexagonal countersunk hole is provided at the center of the rotating gear to facilitate rotation by an hexagonal wrench.

[0010] The beneficial effects of the present invention are as follows: by arranging a multi-workpiece clamping and pressing mechanism, the truss rod is erected above the workbench, and the workpiece is directly pressed onto the workbench surface from the top by utilizing the multiple sets of pressing assemblies arranged on the truss rod, so that the left and right sides of the workpiece can be exposed, and the double-station milling machine can process the left and right sides of the workpiece at one time, thereby improving the processing efficiency of the milling machine and avoiding repeated clamping, thereby further improving the processing accuracy of the workpiece; the setting of the multiple sets of pressing assemblies can clamp multiple workpieces at the same time, and the milling machine can process multiple workpieces at the same time, thereby improving the processing efficiency; the movement of the pressing assembly on the truss rod can be realized by the rotation of the rotating gear, thereby the position of the pressing assembly can be adjusted according to the size of the workpiece, thereby facilitating the processing of workpieces of different specifications and improving the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a structural schematic diagram of the left side of the pressing component of the present invention.

[0013] In the figure: 1. Truss rod; 2. Lower through groove; 3. Inverted cone surface; 4. Horizontal mounting plate; 5. Rack; 6. Down-pressing assembly; 7. Horizontal frame plate; 8. Right positioning block; 9. Left mounting plate; 10. Trapezoidal block; 11. Rotating gear; 12. Down-pressing cylinder; 13. Clamping cylinder; 14. Clamping block; 15. Pressing plate; 16. Hexagonal countersunk hole. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0015] Embodiment: A double-station milling machine multi-workpiece clamping and pressing mechanism, such as Figure 1-Figure 2 As shown, it comprises a truss rod 1, a lower through slot 2 is provided at the middle position of the truss rod 1, the lower through slot 2 passes through the truss rod 1 from top to bottom, the left and right sides of the upper end of the truss rod 1 are provided with an inverted cone 3, a horizontal mounting plate 4 is provided at the bottom of the right side of the truss rod 1, a rack 5 is provided on the horizontal mounting plate 4, and the rack 5 is arranged parallel to the lower through slot 2;

[0016] The truss rod 1 is provided with a plurality of groups of downward pressing assemblies 6, each group of the downward pressing assemblies 6 includes a cross frame plate 7, a right positioning block 8 and a left mounting plate 9, the cross frame plate 7 is provided on the upper surface of the truss rod 1, and are slidably connected to each other, the right positioning block 8 is fixedly connected to the right end of the cross frame plate 7, the left mounting plate 9 is fixedly connected to the left side of the cross frame plate 7, the right positioning block 8 includes a trapezoidal block 10 that cooperates with the inverted cone surface 3 in the truss rod 1, the right positioning block 8 is fitted with the inverted cone surface 3 on the right side of the truss rod 1 through the trapezoidal block 10, a rotating gear 11 is provided on the side of the trapezoidal block 10 away from the inverted cone surface 3, the rotating gear 11 is rotatably connected to the trapezoidal block 10, and is meshed with the rack 5 provided on the horizontal mounting plate 4;

[0017] A pressing cylinder 12 is provided in the middle of the cross frame plate 7 , and the protruding end of the pressing cylinder 12 passes through the lower through slot 2 on the truss rod 1 and extends to the lower side of the truss rod 1 .

[0018] A clamping cylinder 13 is provided on the left mounting plate 9, and a clamping block 14 is fixedly connected to the protruding end of the clamping cylinder 13 and cooperates with the inverted cone 3 on the left side of the truss rod 1; a pressing plate 15 is provided on the protruding end of the downward pressure cylinder 12; and a hexagonal countersunk hole 16 is provided at the center position of the rotating gear 11 for easy rotation of the hexagonal wrench.

[0019] The principle of the present invention is as follows: when in use, the truss rod 1 is installed on the surface of the workbench through the column. According to the size of the workpiece, the horizontal frame plate 7 is driven to slide on the truss rod 1 by rotating the gear 11. When the distance is appropriate, the clamping cylinder 13 in each group of the pressing assembly 6 is controlled to extend, and the clamping block 14 is pressed against the inverted cone surface 3 on the side of the truss rod 1. The right positioning block 8 is cooperated to achieve clamping, and the pressing cylinder 12 is controlled to extend, and the workpiece is pressed against the surface of the workbench by the pressing plate 15.

[0020] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A multi-workpiece clamping and pressing mechanism for a double-station milling machine, comprising a truss rod (1), characterized in that: A lower through slot (2) is provided in the middle of the truss rod (1), the lower through slot (2) passes through the truss rod (1) from top to bottom, the left and right side surfaces of the upper end of the truss rod (1) are both provided with inverted cone surfaces (3), a horizontal mounting plate (4) is provided at the bottom of the right side of the truss rod (1), a rack (5) is provided on the horizontal mounting plate (4), and the rack (5) is arranged parallel to the lower through slot (2); The truss rod (1) is provided with a plurality of groups of downward pressing assemblies (6), each group of the downward pressing assemblies (6) comprises a cross frame plate (7), a right positioning block (8) and a left mounting plate (9), the cross frame plate (7) being arranged on the upper surface of the truss rod (1) and being slidably connected to each other, the right positioning block (8) being fixedly connected to the right end of the cross frame plate (7), the left mounting plate (9) being fixedly connected to the left side of the cross frame plate (7), the right positioning block (8) comprising a trapezoidal block (10) cooperating with the inverted conical surface (3) in the truss rod (1), the right positioning block (8) being in contact with the inverted conical surface (3) on the right side of the truss rod (1) through the trapezoidal block (10), a rotating gear (11) being arranged on the side of the trapezoidal block (10) away from the inverted conical surface (3), the rotating gear (11) being rotationally connected to the trapezoidal block (10) and simultaneously meshing with a rack (5) arranged on the horizontal mounting plate (4); A downward pressure cylinder (12) is provided in the middle of the cross frame plate (7), and the extended end of the downward pressure cylinder (12) passes through the lower through slot (2) on the truss rod (1) and extends to the lower side of the truss rod (1).

2. The multi-workpiece clamping and pressing mechanism for a double-station milling machine according to claim 1 is characterized in that: A clamping cylinder (13) is provided on the left mounting plate (9), and a clamping block (14) is fixedly connected to the protruding end of the clamping cylinder (13) and is matched with the inverted cone surface (3) on the left side of the truss rod (1).

3. The multi-workpiece clamping and pressing mechanism for a double-station milling machine according to claim 1 is characterized in that: A pressing plate (15) is provided on the protruding end of the downward pressing oil cylinder (12).

4. The multi-workpiece clamping and pressing mechanism for a double-station milling machine according to claim 1 is characterized in that: A hexagonal countersunk hole (16) is provided at the center of the rotating gear (11) for easy rotation with a hexagonal wrench.

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