Tensioning tool

Abstract

The utility model discloses a tensioning tool, which belongs to the technical field of tool clamps and comprises a main body, a first space is arranged at the bottom of the main body, a connecting sleeve is movably arranged in the first space, the top end of the connecting sleeve telescopically protrudes out of the outer surface of the top of the main body, a groove is arranged at the top of the main body, and a tensioning core is fixedly mounted on the groove. One end of the expansion core is fixed in the groove, a clamping opening is formed in the other end of the expansion core, an expansion chuck is arranged on the top of the body, the bottom end of the expansion chuck is connected with the top end of the connecting sleeve, the expansion chuck is arranged on the periphery of the expansion core and can slide back and forth along the outer wall of the expansion core, and the end, close to the clamping opening, of the expansion core can contract inwards. An axial orientation cover is further fixed to the top of the main body, a second space for the tensioning chuck to slide back and forth is formed in the bottom of the axial orientation cover, the top end of the connecting sleeve can also slide back and forth in the second space, the tensioning tool is simple in structure, efficiency is improved, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and more specifically relates to a tensioning tooling. Background Art

[0002] A mechanical fixture is a device used to fix the object to be processed during the mechanical manufacturing process, so that the components to be processed are placed in the proper position to be processed or tested. In the process of processing products, any fixture that can install and remove workpieces can be called a fixture. At present, most fixtures generally use manual assistance. First, the annular workpiece is placed on the fixture, and then the position of the clamp arm of the fixture is adjusted so that the clamp arm clamps the outer periphery of the annular workpiece, thereby realizing the function of the fixture clamping the annular workpiece. However, this manual assisted fixing method is inefficient. Utility Model Content

[0003] The main purpose of the utility model is to provide a tensioning tool to improve efficiency and save costs.

[0004] According to the first aspect of the utility model, a tensioning tool is provided, including a main body, a first space is opened at the bottom of the main body, a connecting sleeve is movably arranged in the first space, the top of the connecting sleeve can be telescopically protruded from the top outer surface of the main body, a groove is set at the top of the main body, an expanding core is fixedly installed on the groove, one end of the expanding core is fixed in the groove, and a clamping opening is opened at the other end of the expanding core, a tensioning chuck is set at the top of the main body, the bottom end of the tensioning chuck is connected with the top end of the connecting sleeve, the tensioning chuck is set at the outer periphery of the expanding core, the tensioning chuck can slide back and forth along the outer wall of the expanding core, and the end of the expanding core close to the clamping opening can shrink inwardly, and an axial directional cover is also fixed on the top of the main body, and a second space for the tensioning chuck to slide back and forth is opened at the bottom of the axial directional cover, and the top end of the connecting sleeve can also slide back and forth in the second space.

[0005] In a specific embodiment of the utility model, a through channel is opened in the middle position of the expanding core, the interior of the expanding core extends inward to form a first clamping portion, a bolt is provided in the through channel, the first clamping portion clamps the top of the bolt, and the end of the expanding core away from the clamping port is installed in the groove and fixed by the bolt.

[0006] In a specific embodiment of the present invention, the outer wall of the expansion core protrudes outward to form a second locking portion, and the second locking portion contacts the top surface of the main body.

[0007] In a specific embodiment of the present invention, an outer wall of the expansion core close to one end of the clamping port is provided with a first inclined surface, and the first inclined surface is inclined from the main body toward the direction of the tensioning clamp.

[0008] In a specific embodiment of the utility model, the clamping chuck includes a plurality of clamping petals, which are evenly distributed on the outer circumference of the expanding core around the center of the circle of the expanding core, and the inner wall of the clamping petal close to one end of the clamping mouth is provided with a second inclined surface matching the first inclined surface, and the clamping petal moves back and forth along the inclined direction of the first inclined surface.

[0009] In a specific embodiment of the utility model, the connecting sleeve is provided with a supporting portion, the top of the main body is provided with a first through hole, the supporting portion passes through the first through hole to be exposed on the outer surface of the top of the main body, and is fixedly connected to the bottom of the tensioning chuck.

[0010] In a specific embodiment of the utility model, a second through hole is opened on the top of the axially oriented cover, the clamping end of the expansion core and the tensioning chuck pass through the second through hole and are exposed on the outer surface of the second through hole, and the top end of the tensioning chuck can move back and forth on the second through hole.

[0011] In a specific embodiment of the present invention, a plurality of assembly holes are provided on the main body.

[0012] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0013] The tensioning tooling moves the connecting sleeve in the first space so that the tensioning chuck connected to the top end of the connecting sleeve also moves. When the connecting sleeve moves toward the tensioning chuck, the top end of the connecting sleeve moves outward against the tensioning chuck, and at this time, the end of the expansion core close to the clamping opening contracts inward, thereby achieving a clamping effect. Conversely, the connecting sleeve moves in the opposite direction, and the top end of the connecting sleeve drives the tensioning chuck to move inward, and at this time, the end of the expansion core close to the clamping opening expands outward, thereby achieving a loosening effect. The tensioning tooling has a simple structure, improves efficiency, and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 It is a structural schematic diagram of a tensioning tool in one embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional view of a tensioning tool in one embodiment of the utility model;

[0017] Figure 3 It is a cross-sectional view of a tensioning tool without an axial orientation cover in one embodiment of the utility model. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0023] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0024] Reference Figures 1 to 3As shown, a tensioning tool is provided, including a main body 2, a first space 21 is opened at the bottom of the main body 2, a connecting sleeve 1 is movably arranged in the first space 21, the top of the connecting sleeve 1 can be telescopically protruded from the top outer surface of the main body 2, a groove 22 is arranged at the top of the main body 2, an expanding core 3 is fixedly installed on the groove 22, one end of the expanding core 3 is fixed in the groove 22, and a clamping opening 31 is opened at the other end of the expanding core 3, a tensioning chuck 5 is arranged at the top of the main body 2, the bottom end of the tensioning chuck 5 is connected with the top end of the connecting sleeve 1, the tensioning chuck 5 is arranged on the outer periphery of the expanding core 3, the tensioning chuck 5 can slide back and forth along the outer wall of the expanding core 3, and the end of the expanding core 3 close to the clamping opening 31 can shrink inwardly, an axial directional cover 4 is also fixed on the top of the main body 2, and a second space 41 for the tensioning chuck 5 to slide back and forth is opened at the bottom of the axial directional cover 4, and the top end of the connecting sleeve 1 can also slide back and forth in the second space 41.

[0025] In this embodiment, a cylinder is connected to the bottom end of the connecting sleeve 1, and the cylinder causes the connecting sleeve 1 to move back and forth in the first space 21. When the cylinder pushes the connecting sleeve 1 to move toward the top of the main body 2, the top end of the connecting sleeve 1 pushes the tensioning chuck 5 to move, causing the expanding core 3 to move inward to form a clamped state; when the cylinder is deflated, the connecting sleeve 1 moves toward the bottom of the main body 2, and the tensioning chuck 5 moves with the connecting sleeve 1, causing the expanding core to expand outward to form a loosened state.

[0026] In one embodiment of the utility model, a through channel 32 is opened in the middle position of the expanding core 3, and the interior of the expanding core 3 extends inward to form a first clamping portion 33. A bolt 6 is provided in the through channel 32, and the first clamping portion 33 clamps the top of the bolt 6. The end of the expanding core 3 away from the clamping port 31 is installed in the groove 22 and fixed by the bolt 6. The bolt 6 is inserted into the through channel 32 and fixes the position of the expanding core 3. The first clamping portion 33 contacts the bolt 6, which can better fix the expanding core 3.

[0027] In one embodiment of the utility model, the outer wall of the expansion core 3 protrudes outward to form a second locking portion 34, and the second locking portion 34 contacts the top surface of the main body 2 to limit the insertion depth of the expansion core 3, leaving a little space so that the bolt 6 and the expansion core 3 can be better fixed and locked.

[0028] In one embodiment of the utility model, a first inclined surface 35 is provided on the outer wall of the expansion core 3 near the clamping port 31. The first inclined surface 35 is inclined from the main body 2 toward the direction of the tensioning clamp 5 to facilitate the sliding of the tensioning clamp 5 along the inclined direction of the first inclined surface 35, so as to better enable the expansion core 3 to be retracted and clamped inward.

[0029] Furthermore, the tensioning chuck 5 includes a plurality of clamping petals 52, which are evenly distributed on the outer circumference of the expanding core 3 around the center of the circle of the expanding core 3. The inner wall of the clamping petal 52 close to the clamping opening 31 is provided with a second inclined surface 51 matching the first inclined surface 35. The clamping petal 52 moves back and forth along the inclined direction of the first inclined surface 35. There are 6 clamping petals 52. The second inclined surface 51 of each clamping petal 52 slides along the inclined direction of the first inclined surface 35 to clamp or release the clamping opening 31 of the expanding core 3.

[0030] In one embodiment of the utility model, a supporting portion 11 is provided on the connecting sleeve 1, and the supporting portion 11 is extended from the connecting sleeve 1 to the top of the main body 2. A first through hole is provided on the top of the main body 2, and the supporting portion 11 passes through the first through hole and is exposed on the outer surface of the top of the main body 2. A mounting hole is provided on the supporting portion 11, and a through hole connected to the mounting hole is also provided on the tensioning clamp 5. Bolts are inserted into the through holes and the mounting holes and tightened to fix the bottom of the tensioning clamp 5 to the supporting portion 11 of the connecting sleeve 1. When the connecting sleeve 1 is controlled to move, the tensioning clamp 5 also moves with it, so as to achieve the effect of clamping or loosening the clamping opening 31.

[0031] In one embodiment of the utility model, a second through hole is opened on the top of the axial directional cover 4, and the clamping end of the expansion core 3 and the tensioning clamp 5 pass through the second through hole and are exposed on the outer surface of the top of the axial directional cover 4. There is a certain distance between the tensioning clamp 5 and the hole wall of the second through hole, so that the top end of the tensioning clamp 5 can move back and forth smoothly on the second through hole, and the second through hole is used to connect the bolts fixed on the main body 2.

[0032] In an embodiment of the utility model, a plurality of assembly holes 23 are provided on the main body 2, and the assembly holes 23 are used for connection and fixation with a machine tool.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tensioning tool, comprising a main body (2), characterized in that: A first space (21) is provided at the bottom of the main body (2), a connecting sleeve (1) is movably arranged in the first space (21), the top end of the connecting sleeve (1) can be telescopically protruded from the top outer surface of the main body (2), a groove (22) is provided at the top of the main body (2), an expansion core (3) is fixedly installed on the groove (22), one end of the expansion core (3) is fixed in the groove (22), the other end of the expansion core (3) is provided with a clamping opening (31), a clamping chuck (5) is provided at the top of the main body (2), and the clamping chuck The bottom end of the expansion core (5) is connected to the top end of the connecting sleeve (1), the tensioning chuck (5) is arranged on the outer periphery of the expansion core (3), the tensioning chuck (5) can slide back and forth along the outer wall of the expansion core (3), and the end of the expansion core (3) close to the clamping opening (31) can be retracted inwardly, and an axial directional cover (4) is also fixed to the top of the main body (2), and a second space (41) is provided at the bottom of the axial directional cover (4) for the tensioning chuck (5) to slide back and forth, and the top end of the connecting sleeve (1) can also slide back and forth in the second space (41).

2. The tensioning tool according to claim 1, characterized in that: A through channel (32) is provided in the middle of the expansion core (3), the interior of the expansion core (3) extends inward to form a first clamping portion (33), a bolt (6) is provided in the through channel (32), the first clamping portion (33) clamps the top of the bolt (6), and the end of the expansion core (3) away from the clamping opening (31) is installed in the groove (22) and fixed by the bolt (6).

3. The tensioning tool according to claim 1, characterized in that: The outer wall of the expansion core (3) protrudes outward to form a second locking portion (34), and the second locking portion (34) is in contact with the top surface of the main body (2).

4. The tensioning tool according to claim 1, characterized in that: The outer wall of the expansion core (3) at one end close to the clamping opening (31) is provided with a first inclined surface (35), and the first inclined surface (35) is inclined from the main body (2) toward the direction of the expansion clamp (5).

5. The tensioning tool according to claim 4, characterized in that: The tensioning clamp (5) comprises a plurality of clamping petals (52), and the clamping petals (52) are evenly distributed on the outer circumference of the expansion core (3) around the center of the circle of the expansion core (3). The inner wall of the clamping petal (52) at one end close to the clamping opening (31) is provided with a second inclined surface (51) matching with the first inclined surface (35), and the clamping petal (52) moves back and forth along the inclined direction of the first inclined surface (35).

6. The tensioning tool according to claim 1, characterized in that: The connecting sleeve (1) is provided with a supporting portion (11), the top of the main body (2) is provided with a first through hole, the supporting portion (11) passes through the first through hole and is exposed on the outer surface of the top of the main body (2), and is fixedly connected to the bottom of the tensioning clamp (5).

7. The tensioning tool according to claim 1, characterized in that: A second through hole is provided on the top of the axially oriented cover (4), and the clamping end of the expansion core (3) and the tensioning clamp (5) pass through the second through hole and are exposed on the outer surface of the second through hole. The top end of the tensioning clamp (5) can move back and forth on the second through hole.

8. The tensioning tool according to claim 1, characterized in that: The main body (2) is provided with a plurality of assembly holes (23).

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