Firmly-clamping reaming lever

Abstract

The utility model provides a firm clamping reaming lever which comprises a handle (1), a fixed clamping block (2) and a movable clamping block (3), the fixed clamping block (2) is an L-shaped block, a vertical V-shaped groove (6) is formed in the middle of the long edge of the fixed clamping block (2), and threaded counter bores (7) perpendicular to the V-shaped groove (6) are symmetrically formed in the same horizontal positions of the two sides of the V-shaped groove (6); the movable clamping block (3) and the fixed clamping block (2) are the same in shape and size, the space defined by the movable clamping block (3) and the short side of the fixed clamping block (2) which are oppositely and reversely combined is a cuboid, and the V-shaped grooves (6) in the middles of the long sides of the two L-shaped blocks are combined to form a jaw used for clamping a screw tap (9) or a square cylinder at the tail of a reamer. Due to the fact that the corresponding threaded holes are formed in the combination faces of the movable clamping block (3) and the fixed clamping block (2), the clamping bolt (4) is controlled through a tool to enable the movable clamping block (3) to be close to or away from the fixed clamping block (2), clamping is firm and labor-saving, and students can operate the clamping device more conveniently.

Description

Technical Field

[0001] The utility model relates to a tool for clamping, in particular to a hinge lever with firm clamping. Background Art

[0002] Benchwork is one of the important courses in mechanical teaching. The reamer is a bench tool used to clamp reamer or tap. It is mainly used for manual processing of precision holes and threaded holes. As a commonly used bench tool, it plays an indispensable role in practical training teaching, industrial production and project research and development.

[0003] At present, students generally use the hinge levers commonly sold on the market when doing benchwork training. When the fixed clamp block and the movable clamp block clamp the square column at the tail of the tap and reamer, they are subjected to the clamping force and torque, and after wear, the square small opening formed when the fixed clamp block and the movable clamp block are closed becomes a round small opening, resulting in the inability to clamp the square column at the tail of the tool. In addition, during the operation, the left-handed threads of the movable clamp block and the movable handle are often subjected to the action of tension and thrust, which causes thread wear and even jamming, making the movable clamp block inflexible in advance and retreat, and the diameter of the connecting bolt connecting the movable clamp block and the movable handle is too small, which is generally difficult to process in factories, so the entire hinge lever is scrapped. In addition, when students manually turn the movable handle, they lack control over the force, which easily leads to insufficient clamping force, which makes the tap or reamer easy to fall off. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the utility model provides a hinge lever which saves time and effort when clamping, has a firm clamping, is simple to use, has low cost and high precision.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a firmly clamped hinge lever, comprising a handle 1, a fixed clamping block 2, a movable clamping block 3 and a clamping bolt 4, one end of the handle 1 is an external thread structure, and the other end is provided with a non-slip rubber sleeve 5; the fixed clamping block 2 is an L-shaped block, and a transverse threaded hole matching the external thread of the handle 1 is provided in the middle of the outer side of the short side of the L-shaped block, and the fixed clamping block 2 is fixed to the handle 1 on one side through the threaded hole, and a vertical V-shaped groove 6 is provided in the middle of the long side of the fixed clamping block 2, and threaded countersunk holes 7 perpendicular to the V-shaped groove 6 are symmetrically provided at the same horizontal position on both sides of the V-shaped groove 6.

[0006] The movable clamping block 3 has the same shape and size as the fixed clamping block 2. A transverse threaded hole matching the external thread of the handle 1 is provided in the middle of the outer side of the short side of the movable clamping block 3, and the movable clamping block 3 is fixed to the handle 1 on the other side through the threaded hole. A vertical V-shaped groove 6 is provided in the middle of the long side of the movable clamping block 3, and threaded through holes 8 perpendicular to the V-shaped groove 6 are symmetrically provided at the same horizontal position on both sides of the V-shaped groove 6.

[0007] The clamping bolt 4 passes through the washer and the threaded through hole 8 of the movable clamping block 3 and is screwed into the threaded countersunk hole 7 of the fixed clamping block 2, pushing the movable clamping block 3 towards or away from the fixed clamping block 2. The space enclosed by the relatively opposite short sides of the movable clamping block 3 and the fixed clamping block 2 is a rectangular parallelepiped, so that the handle 1 is located on the opposite sides of the short sides of the L-shaped block, and the V-shaped grooves 6 in the middle of the long sides of the two L-shaped blocks are combined into a jaw for clamping the tap 9 or the square column at the tail of the reamer.

[0008] Preferably, the threaded through hole 8 is a countersunk hole for placing the clamping bolt 4 into the countersunk hole.

[0009] Beneficial effect: Compared with the traditional hinge lever, the traditional hinge lever relies on manual force to clamp the tap 9 or the tail of the reamer. In this application, since the joint surfaces of the movable clamping block 3 and the fixed clamping block 2 are provided with corresponding threaded holes, the clamping bolt 4 is controlled by a tool to make the movable clamping block 3 approach or move away from the fixed clamping block 2, the clamping is firm and labor-saving, and it is more convenient for students to operate. After assembling the fixed clamping block 2 and the movable clamping block 3, the tap 9 or the reamer can be clamped for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in a top view.

[0012] In the figure: handle 1, fixed clamping block 2, movable clamping block 3, clamping bolt 4, anti-slip rubber sleeve 5, V-shaped groove 6, threaded countersunk hole 7, threaded through hole 8, tap 9. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with specific embodiments. Example

[0014] A hinge lever with firm clamping comprises a handle 1, a fixed clamping block 2, a movable clamping block 3 and a clamping bolt 4, wherein one end of the handle 1 is an external thread structure, and the other end is provided with a non-slip rubber sleeve 5; the fixed clamping block 2 is an L-shaped block, and a transverse threaded hole matching the external thread of the handle 1 is provided in the middle of the outer side of the short side of the L-shaped block, and the fixed clamping block 2 is fixed to the handle 1 on one side through the threaded hole, and a vertical V-shaped groove 6 is provided in the middle of the long side of the fixed clamping block 2, and threaded countersunk holes 7 perpendicular to the V-shaped groove 6 are symmetrically provided at the same horizontal position on both sides of the V-shaped groove 6.

[0015] The movable clamping block 3 has the same shape and size as the fixed clamping block 2. A transverse threaded hole matching the external thread of the handle 1 is provided in the middle of the outer side of the short side of the movable clamping block 3, and the movable clamping block 3 is fixed to the handle 1 on the other side through the threaded hole. A vertical V-shaped groove 6 is provided in the middle of the long side of the movable clamping block 3, and threaded countersunk through holes 8 perpendicular to the V-shaped groove 6 are symmetrically provided at the same horizontal position on both sides of the V-shaped groove 6, which are used to place the clamping bolt 4 into the countersunk.

[0016] The clamping bolt 4 passes through the washer and the threaded through hole 8 of the movable clamping block 3 and is screwed into the threaded countersunk hole 7 of the fixed clamping block 2, pushing the movable clamping block 3 towards or away from the fixed clamping block 2. The space enclosed by the relatively opposite short sides of the movable clamping block 3 and the fixed clamping block 2 is a rectangular parallelepiped, so that the handle 1 is located on the opposite sides of the short sides of the L-shaped block, and the V-shaped grooves 6 in the middle of the long sides of the two L-shaped blocks are combined into a jaw for clamping the tap 9 or the square column at the tail of the reamer.

[0017] The utility model uses a clamping bolt 4 to make the movable clamping block 3 close to the fixed clamping block 2, so that the jaws formed by the two V-shaped grooves 6 clamp the tap 9 or the square column at the tail of the reamer; on the contrary, when the movable clamping block 3 is away from the fixed clamping block 2, the tap 9 or the reamer can be removed. When tapping, hold the handles 1 at both ends with both hands, align the tap 9 with the bottom hole, turn the handle 1 to press the tap 9 down, tap the tap 9, and then continue to turn the handle 1 until all the threads are tapped out.

Claims

1. A hinge lever with a firm clamping function, comprising a handle (1), a fixed clamping block (2), a movable clamping block (3) and a clamping bolt (4), characterized in that: One end of the handle (1) is an external thread structure, and the other end is provided with an anti-slip rubber sleeve (5); the fixed clamping block (2) is an L-shaped block, and a transverse threaded hole matching the external thread of the handle (1) is provided in the middle of the outer side of the short side of the L-shaped block, and the fixed clamping block (2) is fixed to the handle (1) on one side through the threaded hole, and a vertical V-shaped groove (6) is provided in the middle of the long side of the fixed clamping block (2), and threaded countersunk holes (7) perpendicular to the V-shaped groove (6) are symmetrically provided at the same horizontal position on both sides of the V-shaped groove (6); The movable clamping block (3) has the same shape and size as the fixed clamping block (2); a transverse threaded hole matching the external thread of the handle (1) is provided in the middle of the outer side of the short side of the movable clamping block (3); the movable clamping block (3) is fixed to the handle (1) on the other side through the threaded hole; a vertical V-shaped groove (6) is provided in the middle of the long side of the movable clamping block (3); and threaded through holes (8) perpendicular to the V-shaped groove (6) are symmetrically provided at the same horizontal position on both sides of the V-shaped groove (6); The clamping bolt (4) passes through the threaded through hole (8) of the movable clamping block (3) and is screwed into the threaded countersunk hole (7) of the fixed clamping block (2), pushing the movable clamping block (3) closer to or away from the fixed clamping block (2). The space enclosed by the short sides of the movable clamping block (3) and the fixed clamping block (2) in opposite directions is a rectangular parallelepiped, so that the handle (1) is located on two opposite sides of the short sides of the L-shaped block. The V-shaped grooves (6) in the middle of the long sides of the two L-shaped blocks are combined into a jaw for clamping the tap (9) or the square column at the tail of the reamer.

2. A firmly clamped hinge lever according to claim 1, characterized in that: The threaded through hole (8) is a countersunk hole.

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