Shaft machining clamp

Abstract

The utility model discloses a shaft machining clamp, and belongs to the field of machining, the shaft machining clamp comprises an inner container, a clamping mechanism is arranged outside the inner container, the clamping mechanism comprises a locking piece, the locking piece is in sliding connection with the inner container, a plurality of expansion pieces are in sliding connection with the interior of the locking piece, and the expansion pieces are in sliding connection with the inner container. The multiple expansion pieces are annularly distributed in the locking piece, connecting mechanisms are arranged between the expansion pieces and the locking piece, protection mechanisms are arranged on the surfaces of the expansion pieces, the locking piece and the expansion pieces are arranged, the expansion pieces are fixed through the locking piece, then the shaft sleeve is arranged outside the expansion pieces, and therefore the expansion pieces can be fixed through the shaft sleeve. The locking piece is arranged outside the inner container in a sleeving mode, then the expansion piece is expanded through the installation inclined face on the surface of the inner container and abuts against the inner side wall of the shaft body, the shaft body is fixed, and the situation that when the shaft body which is in a hollow state and thin in outer wall is clamped, the expansion piece is damaged is avoided; the problem that the shaft body is easy to deform or the surface of the shaft body is damaged due to the processing of the three-jaw chuck is solved, and the practicability is improved.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to a shaft machining fixture. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for operation or inspection; it is also called a clamp. In a broader sense, any device used to quickly, conveniently, and safely install a workpiece at any stage of the manufacturing process can be called a fixture.

[0003] Currently, during the surface machining of shafts, one end of the shaft is usually fixed by a three-jaw chuck. However, when the shaft is hollow and its outer wall is thin, machining with a three-jaw chuck can easily cause deformation of the shaft or damage to its surface. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a shaft machining fixture, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a shaft machining fixture, including an inner liner, a clamping mechanism provided on the outside of the inner liner, the clamping mechanism including a locking member, the locking member being slidably connected to the inner liner, a plurality of expansion plates being slidably connected inside the locking member, the plurality of expansion plates being distributed in a ring inside the locking member, a connecting mechanism being provided between the expansion plates and the locking member, and a protective mechanism being provided on the surface of the expansion plates.

[0006] In a preferred embodiment, a limiting groove is formed on the surface of the inner liner. The limiting groove is circular and is adapted to the expansion plate.

[0007] By adopting the above technical solution, the limiting groove is circular, and the limiting groove is adapted to the expansion plate, and the limiting groove limits the expansion plate, which can better limit the expansion plate.

[0008] In a preferred embodiment, the surface of the inner liner is provided with an installation bevel.

[0009] By adopting the above technical solution, the inner liner has an installation slope, and the expansion piece is opened by the action of the installation slope and abuts against the inner side wall of the shaft to fix the shaft, which can better fix the shaft.

[0010] In a preferred embodiment, the connecting mechanism includes an insertion block, which is fixedly connected to an expansion plate. A spring is fixedly connected inside the insertion block, and a positioning block is fixedly connected to one side of the spring. The positioning block is slidably connected to the insertion block.

[0011] By adopting the above technical solution, the locking component and the expansion plate are connected by inserting the insertion block into the interior of the locking component, and then the positioning block is supported by the spring and positioned by the positioning block, which can better connect the locking component and the expansion plate.

[0012] In a preferred embodiment, the locking member has an insertion groove inside, the insertion groove is trapezoidal, and the insertion groove is adapted to the insertion block.

[0013] By adopting the above technical solution, the locking component has an insertion groove inside, and the insertion groove is trapezoidal outside the groove. The insertion groove is adapted to the insertion block, which can better insert the insertion block into the locking component.

[0014] In a preferred embodiment, the surface of the locking member is provided with a through hole, which is adapted to the positioning block.

[0015] By adopting the above technical solution, through holes are opened on the surface of the locking component, and the through holes are adapted to the positioning block, and the positioning block is limited by the through holes, the positioning block can be better limited.

[0016] In a preferred embodiment, expansion grooves are formed on the surface of each expansion sheet.

[0017] By adopting the above technical solution, expansion grooves are opened on the surface of the expansion sheet, and the expansion grooves prevent the expansion sheet from being damaged during the expansion process, thus better protecting the expansion sheet.

[0018] In a preferred embodiment, the protective mechanism includes a wear-resistant layer, which is fixedly connected to an expansion sheet. An anti-oxidation layer is fixedly connected to the side of the wear-resistant layer away from the expansion sheet. The wear-resistant layer is an epoxy resin coating, and the anti-oxidation layer is a ceramic coating.

[0019] By adopting the above technical solution, the wear-resistant layer is fixed by the expansion sheet, the anti-oxidation layer is fixed by the wear-resistant layer, the anti-oxidation layer enhances the oxidation resistance of the expansion sheet, and the wear-resistant layer enhances the wear resistance of the expansion sheet, thus providing better protection for the expansion sheet.

[0020] The beneficial effects of this application are:

[0021] 1. This shaft machining fixture, by setting a locking element and an expansion plate, fixes the expansion plate with the locking element, then sleeves the shaft on the outside of the expansion plate, then sleeves the locking element on the outside of the inner liner, and then the mounting slope on the surface of the inner liner expands the expansion plate to abut against the inner side wall of the shaft, thus fixing the shaft. This avoids the problem of shaft deformation or damage to the surface of the shaft when clamping a hollow shaft with a thin outer wall using a three-jaw chuck, thus improving practicality.

[0022] 2. This shaft machining fixture, by setting an insertion block, a spring and a positioning block, connects the locking member and the expansion plate by inserting the insertion block into the inside of the locking member, and then the spring supports the positioning block, and the positioning block positions the insertion block. This avoids the problem of traditional shaft machining fixtures that cannot quickly replace damaged expansion plates, thus improving practicality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the unfolded structure of this application;

[0024] Figure 2 This is a bottom view of the locking mechanism structure of this application;

[0025] Figure 3 This is a cross-sectional view of the expansion sheet structure of this application;

[0026] Figure 4 This is a schematic diagram of the protection mechanism structure for this application.

[0027] The following are the labels in the diagram: 1. Inner liner; 2. Clamping mechanism; 21. Locking element; 22. Expansion plate; 3. Connecting mechanism; 31. Insertion block; 32. Spring; 33. Positioning block; 4. Protective mechanism; 41. Wear-resistant layer; 42. Anti-oxidation layer; 5. Through hole; 6. Limiting groove; 7. Mounting slope; 8. Insertion groove; 9. Expansion groove. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0029] Reference Figures 1-2 A shaft machining fixture includes an inner liner 1. A limiting groove 6 is formed on the surface of the inner liner 1. The limiting groove 6 is circular and is adapted to an expansion piece 22. By making the limiting groove 6 circular, adapting it to the expansion piece 22, and limiting the expansion piece 22, the limiting groove 6 can better limit the expansion piece 22.

[0030] Reference Figure 1The inner liner 1 has an installation slope 7 on its surface. The installation slope 7 on the surface of the inner liner 1 allows the expansion piece to be opened and abut against the inner wall of the shaft to fix the shaft, thus better fixing the shaft.

[0031] Reference Figures 1-3 The inner liner 1 is provided with a clamping mechanism 2 on its exterior. The clamping mechanism 2 includes a locking member 21, which is slidably connected to the inner liner 1. Several expansion pieces 22 are slidably connected inside the locking member 21. The expansion pieces 22 are arranged in a ring inside the locking member 21. A connecting mechanism 3 is provided between the expansion pieces 22 and the locking member 21. The connecting mechanism 3 includes an insertion block 31, which is fixedly connected to the expansion pieces 22. A spring 32 is fixedly connected inside the insertion block 31. A positioning block 33 is fixedly connected to one side of the spring 32. The positioning block 33 is slidably connected to the insertion block 31. By inserting the insertion block 31 into the interior of the locking member 21 to connect the locking member 21 and the expansion pieces 22, and then supporting the positioning block 33 with the spring 32 and positioning the insertion block 31 with the positioning block 33, the connection between the locking member 21 and the expansion pieces 22 can be better achieved.

[0032] Reference Figures 2-3 The locking member 21 has an insertion groove 8 inside. The insertion groove 8 is trapezoidal in shape and is adapted to the insertion block 31. By having an insertion groove 8 inside the locking member 21, and by having a trapezoidal shape outside the insertion groove 8 and by having an insertion groove 8 adapted to the insertion block 31, the insertion block 31 can be better inserted into the locking member 21.

[0033] Reference Figures 1-3 The surface of the locking member 21 is provided with a through hole 5, which is adapted to the positioning block 33. By providing a through hole 5 on the surface of the locking member 21, adapting the through hole 5 to the positioning block 33, and limiting the positioning block 33 by the through hole 5, the positioning block 33 can be better limited.

[0034] Reference Figures 1-3 The expansion plate 22 has expansion grooves 9 on its surface. The expansion grooves 9 prevent the expansion plate 22 from breaking during the expansion process and can better protect the expansion plate 22.

[0035] Reference Figure 4The surface of the expansion sheet 22 is provided with a protective mechanism 4, which includes a wear-resistant layer 41. The wear-resistant layer 41 is fixedly connected to the expansion sheet 22. An anti-oxidation layer 42 is fixedly connected to the side of the wear-resistant layer 41 away from the expansion sheet 22. The wear-resistant layer 41 is an epoxy resin coating, and the anti-oxidation layer 42 is a ceramic coating. The wear-resistant layer 41 is fixed by the expansion sheet 22, and the anti-oxidation layer 42 is fixed by the wear-resistant layer 41. The anti-oxidation layer 42 enhances the oxidation resistance of the expansion sheet 22, and the wear-resistant layer 41 enhances the wear resistance of the expansion sheet 22, which can better protect the expansion sheet 22.

[0036] Working principle: The insertion block 31 is inserted into the locking member 21 to connect the locking member 21 and the expansion piece 22. The spring 32 supports the positioning block 33, which then positions the insertion block 31. An insertion groove 8 is formed inside the locking member 21, and the groove is trapezoidal, fitting the insertion block 31 for better insertion. A through hole 5 is formed on the surface of the locking member 21, fitting the positioning block 33 and limiting its position. When the expansion piece 22 needs to be disassembled, the positioning block 33 is pressed into the insertion block 31, and then the expansion piece 22 is pulled to disengage from the locking member 21, completing the disassembly. 22 fixes the wear-resistant layer 41, and then fixes the anti-oxidation layer 42 with the wear-resistant layer 41. The anti-oxidation layer 42 enhances the oxidation resistance of the expansion sheet 22, and the wear-resistant layer 41 enhances the wear resistance of the expansion sheet 22, which can better protect the expansion sheet 22. Then, the locking member 21 fixes the expansion sheet 22. Then, the shaft sleeve is placed on the outside of the expansion sheet 22, and the locking member 21 is placed on the outside of the inner liner 1. Then, the mounting inclined surface 7 on the surface of the inner liner 1 opens the expansion sheet and abuts against the inner side wall of the shaft body to fix the shaft body. Then, the limiting groove 6 on the surface of the inner liner 1 is adapted to the expansion sheet 22. Then, the limiting groove 6 is circular and limits the expansion sheet 22. Then, the expansion groove 9 is opened on the surface of the expansion sheet 22 to prevent the expansion sheet 22 from being damaged during the opening process.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A shaft machining fixture, comprising an inner liner (1), characterized in that, The inner liner (1) is provided with a clamping mechanism (2) on its outside. The clamping mechanism (2) includes a locking member (21). The locking member (21) is slidably connected to the inner liner (1). Several expansion pieces (22) are slidably connected inside the locking member (21). The several expansion pieces (22) are distributed in a ring inside the locking member (21). A connecting mechanism (3) is provided between the expansion pieces (22) and the locking member (21). A protective mechanism (4) is provided on the surface of the expansion pieces (22).

2. The shaft machining fixture according to claim 1, characterized in that, The inner liner (1) has a limiting groove (6) on its surface. The limiting groove (6) is circular and is adapted to the expansion plate (22).

3. A shaft machining fixture according to claim 1, characterized in that, The inner liner (1) has an installation bevel (7) on its surface.

4. A shaft machining fixture according to claim 1, characterized in that, The connecting mechanism (3) includes an insertion block (31), which is fixedly connected to an expansion plate (22). A spring (32) is fixedly connected inside the insertion block (31), and a positioning block (33) is fixedly connected to one side of the spring (32). The positioning block (33) is slidably connected to the insertion block (31).

5. A shaft machining fixture according to claim 4, characterized in that, The locking member (21) has an insertion groove (8) inside. The insertion groove (8) is trapezoidal in shape and is adapted to the insertion block (31).

6. A shaft machining fixture according to claim 4, characterized in that, The surface of the locking member (21) is provided with a through hole (5), which is adapted to the positioning block (33).

7. A shaft machining fixture according to claim 1, characterized in that, The surface of each expansion plate (22) is provided with expansion grooves (9).

8. A shaft machining fixture according to claim 1, characterized in that, The protective mechanism (4) includes a wear-resistant layer (41), which is fixedly connected to the expansion plate (22). An anti-oxidation layer (42) is fixedly connected to the side of the wear-resistant layer (41) away from the expansion plate (22). The wear-resistant layer (41) is an epoxy resin coating, and the anti-oxidation layer (42) is a ceramic coating.

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