A milling fixture

Abstract

This utility model relates to the field of fixture technology, and more particularly to a milling fixture. It includes a fixed block with side plates on both sides. Each side plate has a first through hole through which a fixing bolt passes and connects to a nut. One side of the fixed block is a first inclined surface with a first threaded hole perpendicular to the bottom surface of the fixed block. A sliding block is slidably connected to the first inclined surface, with its top surface parallel to the bottom surface of the fixed block. The sliding block has an elongated hole through which a first bolt passes and connects to the first threaded hole. A pressure plate is slidably connected to one side of the sliding block, with a spring between them. A second stepped hole is provided on one side of the sliding block, into which the spring is inserted. The lower part of the pressure plate has a protruding pressure surface perpendicular to the bottom surface of the fixed block. This utility model allows the lower surface of the workpiece to fit snugly against the surface of the worktable.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a milling fixture. Background Technology

[0002] Square plate-shaped workpieces require milling on a milling machine during machining. When the entire upper surface of the square plate-shaped workpiece is being milled, the fixture cannot press on its upper surface (because if it does, the pressed area and its vicinity cannot be milled). This results in the lower surface of the square plate-shaped workpiece not being completely in contact with the worktable surface when it is clamped on the milling machine's worktable, causing the upper and lower surfaces to be non-parallel after milling. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a milling fixture in response to the above-mentioned technical deficiencies.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a milling fixture, including a fixed block, side plates provided on both sides of the fixed block, a first through hole provided on the side plate, a fixing bolt passing through the first through hole and connected to a nut, a first inclined surface on one side of the fixed block, a first threaded hole perpendicular to the bottom surface of the fixed block provided on the first inclined surface, a sliding block slidably connected to the first inclined surface and its top surface parallel to the bottom surface of the fixed block, an elongated hole provided on the sliding block, a first bolt passing through the elongated hole and connected to the first threaded hole, a pressure plate slidably connected to one side of the sliding block and a spring provided between the two, a second stepped hole provided on one side of the sliding block, the spring inserted into the second stepped hole, a protruding pressure surface provided at the lower part of the pressure plate, and the pressure surface perpendicular to the bottom surface of the fixed block.

[0005] To further optimize this technical solution, a second threaded hole is provided at the bottom of the second stepped hole, the spring is inserted into the second stepped hole, and the second bolt passes through the second through hole and the second stepped hole and is connected to the second threaded hole.

[0006] To further optimize this technical solution, a first stepped hole is provided on the side of the second through hole away from the clamping plate, and the head of the second bolt is located in the first stepped hole.

[0007] To further optimize this technical solution, a guide block is provided on the side of the pressing plate near the sliding block, and a guide cavity is provided on the sliding block that is slidably connected to the guide block.

[0008] Compared with the prior art, the present invention has the following advantages: one side of the fixed block is a first inclined surface, and the sliding block is slidably connected to the inclined surface. After the first bolt passes through the elongated hole on the sliding block, it is connected to the first threaded hole on the fixed block. A pressure plate is slidably connected to one side of the sliding block, and a spring is provided between the two. When the first bolt is tightened, the pressure plate can generate a downward displacement, thereby generating a downward friction force on the side of the workpiece, so that the lower surface of the workpiece is in contact with the surface of the worktable. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a milling fixture.

[0010] Figure 2 This is a schematic diagram of the fixed block.

[0011] Figure 3 This is a schematic diagram of the sliding block.

[0012] Figure 4 This is a schematic diagram of the slider from another direction.

[0013] In the figure: 1. Fixing block; 11. Side plate; 111. First through hole; 12. First threaded hole; 2. First bolt; 3. Sliding block; 31. Pressure plate; 311. First stepped hole; 312. Pressure surface; 32. Long hole; 33. Second bolt; 34. Spring; 35. Guide block; 4. Fixing bolt. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0015] Detailed implementation method: combined with Figure 1-4As shown, a milling fixture includes a fixing block 1, with side plates 11 on both sides of the fixing block 1. Each side plate 11 has a first through hole 111. A fixing bolt 4 passes through the first through hole 111 and is connected to a nut. The fixing bolt 4 can be inserted into an inverted T-slot on the milling machine table, and then the nut can be tightened to fix the fixing block 1 to the milling machine table. One side of the fixing block 1 is a first inclined surface, with a first threaded hole 12 perpendicular to the bottom surface of the fixing block 1. A sliding block 3 is slidably connected to the first inclined surface, and its top surface is parallel to the bottom surface of the fixing block 1. The sliding block 3 has an elongated hole 32 that penetrates the sliding block 3 in the vertical direction. A first bolt 2 passes through the hole. After passing through the elongated hole 32, it connects to the first threaded hole 12. Tightening the first bolt 2 allows the sliding block 3 to slide obliquely downward along the first inclined surface. A pressure plate 31 is slidably connected to one side of the sliding block 3, and a spring 34 is provided between the two. A second stepped hole is provided on one side of the sliding block 3, and the spring 34 is inserted into the second stepped hole. Under the action of the spring 34, there can be a gap between the pressure plate 31 and the sliding block 3. After the spring 34 is compressed, the pressure plate 31 can be pressed against the side of the sliding block 3. The sides of the pressure plate 31 and the sliding block 3 that are close to each other are perpendicular to the bottom surface of the fixed block 1. A protruding pressing surface 312 is provided at the lower part of the pressure plate 31, and the pressing surface 312 is perpendicular to the bottom surface of the fixed block 1.

[0016] Furthermore, a second threaded hole is provided at the bottom of the second stepped hole, and a second through hole is provided on the clamping plate 31. The second bolt 33 passes through the second through hole and the second stepped hole and is connected to the second threaded hole. The second bolt 33 passes through the spring 34, so that the spring 34 can be pre-compressed to a certain extent.

[0017] Furthermore, a first stepped hole 311 is provided on the side of the second through hole away from the clamping plate 31. The head of the second bolt 33 is located in the first stepped hole 311. The depth of the first stepped hole 311 is much greater than the length of the head of the second bolt 33. When the clamping plate 31 is pressed against the side of the sliding block 3, the head of the second bolt 33 will not be exposed from the first stepped hole 311, so that the clamping surface 312 can be closer to the sliding block 3.

[0018] Specifically, a guide block 35 is provided on the side of the pressing plate 31 near the sliding block 3. The guide block 35 can be cylindrical or cuboid. The sliding block 3 is provided with a guide cavity that is slidably connected to the guide block 35. There will be no relative displacement between the pressing plate 31 and the sliding block 3 in the vertical direction.

[0019] In use, first place the square plate-shaped workpiece on the milling machine's worktable. Set the clamps of this application at both ends of both sides of the square plate-shaped workpiece (these two sides are the two sides in the width direction of the worktable). After the clamping surface 312 is pressed against the side of the square plate-shaped workpiece, tighten the nuts to fix the fixing block 1 to the worktable. Then, tighten each of the four first bolts 2 several turns, and then tighten each of the four first bolts 2 several turns again until the clamping plate 31 is tightly pressed against the side of the sliding block 3, pressing the two sides of the workpiece together, thus fixing the workpiece. During this process, because the sliding block 3 moves diagonally downwards, the clamping plate 31 moves downwards due to the obstruction of the workpiece (at this time, the spring 34 is compressed), applying a downward frictional force to the workpiece, causing the lower surface of the workpiece to adhere to the surface of the worktable. The square plate-shaped workpiece being clamped should not be too thin, so that after clamping, the top of the clamping surface 312 is lower than the upper surface of the workpiece.

[0020] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A jig for milling comprising a fixed block (1), characterized in that: Both sides of the fixing block (1) are provided with side plates (11), and the side plates (11) are provided with first through holes (111). The fixing bolts (4) pass through the first through holes (111) and are connected with nuts. One side of the fixing block (1) is a first inclined surface. The first inclined surface is provided with a first threaded hole (12) perpendicular to the bottom surface of the fixing block (1). The sliding block (3) is slidably connected to the first inclined surface and its top surface is parallel to the bottom surface of the fixing block (1). The sliding block (3) is provided with... The sliding block (3) is provided with an elongated hole (32). The first bolt (2) passes through the elongated hole (32) and is connected to the first threaded hole (12). A pressure plate (31) is slidably connected to one side of the sliding block (3) and a spring (34) is provided between the two. A second stepped hole is provided on one side of the sliding block (3). The spring (34) is inserted into the second stepped hole. A protruding pressure surface (312) is provided on the lower part of the pressure plate (31), and the pressure surface (312) is perpendicular to the bottom surface of the fixed block (1).

2. The fixture for milling according to claim 1, characterized in that: The bottom of the second stepped hole is provided with a second threaded hole, and the clamping plate (31) is provided with a second through hole. The second bolt (33) passes through the second through hole and the second stepped hole and is connected to the second threaded hole.

3. The fixture of claim 2 wherein: A first stepped hole (311) is provided on the side of the second through hole away from the clamping plate (31), and the head of the second bolt (33) is located in the first stepped hole (311).

4. A fixture for milling according to any one of claims 1-3, characterized in that: The clamping plate (31) is provided with a guide block (35) on the side near the sliding block (3), and the sliding block (3) is provided with a guide cavity that is slidably connected to the guide block (35).

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