Clamping device for inner side of part

Abstract

The utility model discloses a part inner side clamping device, and belongs to the field of part machining. The device comprises a supporting seat, a transmission unit, a pushing unit and a lifting unit, the supporting seat is vertically and fixedly arranged, and the transmission unit is fixedly installed on the supporting seat; the multiple pushing units are arranged on the side edge of the transmission unit at intervals in a surrounding mode and movably connected with the transmission unit through telescopic rods. A transmission mechanism for controlling the telescopic rod to move is arranged in the transmission unit, and a power source for controlling a switch of the transmission mechanism is arranged in the supporting seat; and the lifting unit is mounted at the top of the transmission unit. The cover-shaped part can be clamped and fixed from the inner side of the part to the outer side of the part, the fixing effect is excellent, operation of outer side machining equipment cannot be affected, and the machining effect on the cover-shaped part is improved.

Description

Technical Field

[0001] The utility model belongs to the field of component processing, and more specifically, relates to a clamping device for the inner side of a component. Background Art

[0002] In the process of machining mechanical components, clamping devices are required to fix the workpieces to be machined. Most of the component types required in various fields are flat structures. The machining operation of such flat structures is relatively easy, and precise machining can be carried out after being fixed by some common clamping devices on the market.

[0003] However, according to the requirements of existing equipment, in some cases, components with special-shaped structures are needed, such as components in the shape of a cover with an open end. It is often difficult to achieve good fixing effects with conventional clamping devices for such components, resulting in the inability to guarantee the machining accuracy and meet the equipment requirements.

[0004] For example, a patent document with the Chinese patent application number: CN201511023486.1 and the publication date: March 23, 2016 discloses a clamping and fixing seat for welding plate-shaped workpieces, which includes a base plate. Two relatively positioned moving baffles are provided on the base plate. The moving baffles are connected to a driving mechanism, and the driving mechanism can drive the two moving baffles to move in the same or opposite directions horizontally. At least one top head is provided on the inner side of the moving baffle, and the top head is connected to a top head cylinder. By providing two relatively positioned moving baffles on the base plate, the workpiece to be welded can be clamped between the two moving baffles. Since the end faces of many welding workpieces may not be flat, top heads are provided on each moving baffle, and the top heads are connected to the top head cylinders, so that workpieces with non-flat end faces can also be fixed and clamped.

[0005] Although the above solution shows that it can be used for welding workpieces with non-flat end faces, it tightens and fixes the components from the outside. When it is used for the special-shaped components mentioned above, it is difficult to guarantee the fixing effect, resulting in the influence on the milling accuracy.

[0006] The patent document with Chinese patent application number: CN202110941355.0 and publication date: October 8, 2021 discloses a tightening mechanism, a side clamping device, an accessory welding tooling and a welding method, including a side tightening block and a first tightening mounting plate for pushing the side tightening block to tighten the workpiece. One side of the side tightening block is hinged to the first tightening mounting plate, and at least one universal pressure head is provided on the other side. A number of movable ejector rods are arranged along the tightening direction of the first tightening mounting plate, and the ejector rods are used to directly and / or indirectly connect with each universal pressure head in a universal rotation manner. The first tightening mounting plate pushes the side tightening block to abut against the side wall of the workpiece. Depending on the swing angle of the side tightening block around the hinge, the universal pressure head rotates and adjusts accordingly to match the swing angle of the side tightening block. The side tightening block adheres to the side wall of the workpiece by relying on the hinge and the universal pressure head.

[0007] Through the cooperation of the tightening mechanism and the side clamping mechanism, this solution can, to a certain extent, achieve the clamping and fixing of special-shaped parts. However, it is also not applicable to the arc-shaped plate with a part extending downward on both sides and the cover-shaped part with an open end mentioned above, and the fixing effect is not ideal.

[0008] In particular, both of the above two solutions clamp and tighten the parts from the outside of the parts. Due to the problem of the space occupied by this kind of outside clamping device itself, it is easy to interfere with the work of the processing equipment, and it is difficult to perform precise processing on the positions around the clamping parts of the parts. Summary of the Invention

[0009] 1. Problems to be Solved

[0010] Aiming at the problem that the existing part clamping equipment is difficult to be applicable to the clamping of cover-shaped special-shaped parts, resulting in an unsatisfactory processing effect on the cover-shaped special-shaped parts, the utility model provides an inner part clamping device, which can clamp and fix the cover-shaped parts from the inside to the outside, with an excellent fixing effect and without affecting the operation of the outside processing equipment, improving the processing effect on the cover-shaped parts.

[0011] 2. Technical Solution

[0012] To solve the above problems, the utility model adopts the following technical solutions.

[0013] An inner part clamping device includes a support base, a transmission unit, a pushing unit and a lifting unit. The support base is fixedly arranged vertically, and the transmission unit is fixedly installed on the support base; there are multiple pushing units, which are arranged at intervals around the side of the transmission unit and are movably connected to the transmission unit through telescopic rods; a transmission mechanism for controlling the movement of the telescopic rods is arranged inside the transmission unit, and a power source for controlling the switch of the transmission mechanism is arranged inside the support base; the lifting unit is installed on the top of the transmission unit.

[0014] As a further improvement of the technical solution, the transmission mechanism includes a first-stage gear and a plurality of second-stage gears meshing around the first-stage gear, and a rack meshing with the second-stage gears at corresponding positions is provided on the telescopic rod; the power source is a motor, and its output shaft is drivingly connected to the first-stage gear.

[0015] As a further improvement of the technical solution, the lifting unit includes a lifting seat and a support block. The lifting seat is fixedly installed on the transmission unit, and the support block is arranged above the lifting seat; a lifting mechanism is installed in the lifting seat, and its lifting rod is vertically arranged and connected to the support block.

[0016] As a further improvement of the technical solution, an anti-slip layer is provided on the upper surface of the support block.

[0017] As a further improvement of the technical solution, the lifting mechanism is a cylinder or an electric push rod.

[0018] As a further improvement of the technical solution, there are a plurality of the lifting mechanisms, and the connection points of the plurality of lifting rods and the support block are evenly distributed on the lower surface of the support block.

[0019] As a further improvement of the technical solution, an auxiliary pressing unit is further included; the auxiliary pressing unit includes a pressing block and a pressing mechanism. The pressing mechanism is installed in the pushing unit, and its telescopic member is horizontally arranged and connected to the pressing block. The area of the outer side surface of the pressing block is smaller than the area of the outer side surface of the pushing unit.

[0020] As a further improvement of the technical solution, an anti-slip layer is provided on the outer side surface of the pressing block.

[0021] As a further improvement of the technical solution, the pressing mechanism is a cylinder or an electric push rod.

[0022] As a further improvement of the technical solution, a base fixedly installed at the bottom of the support seat is further included.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0025] (1) The inner clamping device for parts of the present utility model is aimed at the cover-shaped parts with an open lower end, and can simultaneously support the parts upward and press them tightly in the horizontal direction from the inner side of the opening of the parts. Compared with the conventional clamping device, the clamping is more stable, and this inner clamping method enables the external processing equipment to process the outer side of the cover-shaped parts without affecting the processing process, improving the processing effect of the cover-shaped parts;

[0026] (2) The inner clamping device of a component of the present utility model, through the planetary gear structure composed of a first-stage gear and multiple second-stage gears, enables a single motor to control multiple pushing units simultaneously, reducing the equipment cost and simplifying the equipment operation while ensuring the clamping effect;

[0027] (3) The inner clamping device of a component of the present utility model is provided with anti-slip layers on the surfaces of the support block and the pressing block. The anti-slip layers can increase the clamping force when clamping the component, prevent the component from sliding during the processing of the component, and ensure the processing stability;

[0028] (4) The inner clamping device of a component of the present utility model, on the basis of the pushing unit, further sets an auxiliary pressing unit with a smaller volume and a smaller contact area with the component. When clamping some cover-shaped components with irregular inner shapes, such as having some grooves that cause the pushing unit to be blocked by the outer wall of the groove and the clamping force is weak, the auxiliary pressing unit can be extended into the groove to press tightly, thereby improving the clamping effect. Brief Description of the Drawings

[0029] Figure 1 is a schematic diagram of the working state of the clamping device of the present utility model;

[0030] Figure 2 is a top view of the working state of the clamping device of the present utility model;

[0031] Figure 3 is a schematic structural diagram of the clamping device of the present utility model;

[0032] In the figure: 1, support base; 2, transmission unit; 3, pushing unit; 4, lifting unit; 41, lifting seat; 42, support block; 5, pressing block; 6, base; 7, component. Detailed Description of the Embodiment

[0033] The following describes the exemplary embodiments of the present utility model in detail. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present utility model, it should be understood that other embodiments can be achieved and various changes can be made to the present utility model without departing from the spirit and scope of the present utility model. The following more detailed description of the embodiments of the present utility model does not limit the scope of the claimed present utility model, but is only for illustrative purposes and does not limit the description of the features and characteristics of the present utility model, in order to propose the best way to implement the present utility model and be sufficient to enable those skilled in the art to implement the present utility model. Therefore, the scope of the present utility model is only defined by the appended claims.

[0034] Embodiment 1

[0035] A clamping device for the inner side of a component, mainly used for the processing and clamping of a cover-shaped component with an open end at one side to improve the clamping effect. The following will describe its specific structure and technical effects in detail.

[0036] As Figures 1 to 3 shown, the clamping device includes a support base 1, a transmission unit 2, a pushing unit 3, and a lifting unit 4. Among them, the support base 1 is fixedly arranged vertically, and the transmission unit 2 is fixedly installed on the support base 1. There are multiple pushing units 3, which are arranged at intervals around the side of the transmission unit 2 and are movably connected to the transmission unit 2 through telescopic rods. There is a transmission mechanism in the transmission unit 2 for controlling the movement of the telescopic rods, and a power source for controlling the switch of the transmission mechanism is arranged in the support base 1. The lifting unit 4 is installed on the top of the transmission unit 2.

[0037] The support base 1 is fixedly installed on the base 6. The base 6 has a larger area, making the clamping device more stable. At the same time, the four corners of the base 6 are respectively fixed to the connection part through a bolt, improving the installation strength of the base 6. An angle steel is also connected between the bottom of the base 6 and the support base 1, improving the structural strength of their connection.

[0038] This clamping device is aimed at the cover-shaped component 7 with an open end at the lower side, and can simultaneously support the component 7 upward and push it tightly in the horizontal direction from the inner side of the opening of the component 7. Compared with the conventional clamping device, the clamping is more stable, and this inner clamping method enables the external processing equipment not to affect the processing process when processing the outer side of the cover-shaped component, improving the processing effect of the cover-shaped component.

[0039] Specifically, the transmission mechanism includes a first-stage gear and multiple second-stage gears meshing around the first-stage gear. A rack meshing with the second-stage gear at the corresponding position is arranged on the telescopic rod. The power source is a motor, and its output shaft is drivingly connected to the first-stage gear. In this embodiment, the outer shell of the transmission unit 2 is of a square structure, and there are four pushing units 3, which are respectively arranged on the four side surfaces of the square outer shell. Through the planetary gear structure composed of the first-stage gear and multiple second-stage gears, only a single motor can simultaneously control multiple pushing units 3. While ensuring the clamping effect, it reduces the equipment cost and simplifies the equipment operation. During actual operation, only the middle part of the workpiece needs to be placed on the lifting unit 4, and then at least one set of opposite pushing units 3 can push tightly against the opposite side walls of the cover-shaped component. With the support of the lifting unit 4, stable clamping of the component can be achieved. Therefore, this device is applicable to square cover-shaped components.

[0040] The lifting unit 4 includes a lifting seat 41 and a support block 42. The lifting seat 41 is fixedly installed on the transmission unit 2. The support block 42 is arranged above the lifting seat 41. A lifting mechanism is installed in the lifting seat 41. Its lifting rod is arranged vertically and connected to the support block 42. The lifting mechanism is a cylinder or an electric push rod, and there are multiple of them. The connection points of the multiple lifting rods and the support block 42 are evenly distributed on the lower surface of the support block 42, which can form a more stable support. In this embodiment, the lifting mechanism adopts cylinders, and the number is 4.

[0041] In addition, an auxiliary tightening unit is further provided on the basis of the pushing unit 3. The auxiliary tightening unit includes a tightening block 5 and a tightening mechanism. The tightening mechanism is installed in the pushing unit 3. Its telescopic component is arranged horizontally and connected to the tightening block 5. The outer side area of the tightening block 5 is smaller than the outer side area of the pushing unit 3. The tightening mechanism is a cylinder or an electric push rod, and in this embodiment, it is a cylinder.

[0042] By providing an auxiliary tightening unit with a smaller volume and a smaller contact area with the workpiece, when clamping some cover-shaped parts with irregular inner sides, such as having some grooves, which causes the pushing unit 3 to be blocked by the outer side wall of the groove and the clamping force is weak, the auxiliary tightening unit can be extended into the groove to tighten, thereby improving the clamping effect.

[0043] In this embodiment, an anti-slip layer is provided on the upper surface of the support block 42 and the outer side surface of the tightening block 5. The anti-slip layer can increase the clamping force when clamping parts, prevent the parts from sliding when processing the parts, and ensure the processing stability. The material selection and setting of the anti-slip layer belong to the prior art in this field, so no detailed description will be made.

[0044] In summary, a clamping device for the inner side of parts in this embodiment can clamp and fix the cover-shaped parts from the inside to the outside of the parts. The fixing effect is excellent and it will not affect the operation of the outer processing equipment, improving the processing effect of the cover-shaped parts.

Claims

1. A component inner side clamping device, characterized in that: The invention comprises a support base (1), a transmission unit (2), a pushing unit (3) and a lifting unit (4); the support base (1) is fixedly arranged vertically, and the transmission unit (2) is fixedly mounted on the support base (1); the pushing units (3) are provided in plurality and are arranged around the side of the transmission unit (2) at intervals and are movably connected to the transmission unit (2) via telescopic rods; the transmission unit (2) has a transmission mechanism for controlling the movement of the telescopic rod, and the support base (1) is provided with a power source for controlling the switch of the transmission mechanism; and the lifting unit (4) is mounted on the top of the transmission unit (2).

2. A component inner side clamping device according to claim 1, characterized in that: The transmission mechanism includes a primary gear and a plurality of secondary gears meshing around the primary gear. The telescopic rod is provided with a rack meshing with the secondary gears at corresponding positions. The power source is a motor, and its output shaft is transmission-connected to the primary gear.

3. A component inner side clamping device according to claim 1, characterized in that: The lifting unit (4) comprises a lifting seat (41) and a support block (42); the lifting seat (41) is fixedly mounted on the transmission unit (2); and the support block (42) is arranged above the lifting seat (41); a lifting mechanism is installed in the lifting seat (41), and a lifting rod of the lifting mechanism is vertically arranged and connected to the support block (42).

4. A component inner side clamping device according to claim 3, characterized in that: The upper surface of the support block (42) is provided with an anti-slip layer.

5. A component inner side clamping device according to claim 4, characterized in that: The lifting mechanism is a cylinder or an electric push rod.

6. A component inner side clamping device according to claim 5, characterized in that: The lifting mechanism has a plurality of connection points between the plurality of lifting rods and the support block (42) which are evenly distributed on the lower surface of the support block (42).

7. A component inner side clamping device according to claim 1, characterized in that: It also includes an auxiliary tightening unit; the auxiliary tightening unit includes a tightening block (5) and a tightening mechanism, the tightening mechanism is installed in the pushing unit (3), the telescopic part of the tightening block (5) is horizontally arranged and connected to the tightening block (5), and the area of ​​the outer side surface of the tightening block (5) is smaller than the area of ​​the outer side surface of the pushing unit (3).

8. A component inner side clamping device according to claim 7, characterized in that: An anti-slip layer is provided on the outer side surface of the tightening block (5).

9. A component inner side clamping device according to claim 8, characterized in that: The tightening mechanism is a cylinder or an electric push rod.

10. A component inner side clamping device according to any one of claims 1 to 9, characterized in that: It also includes a base (6) fixedly mounted on the bottom of the support base (1).

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