Clamping device for piston skirt positioning hole machining

Abstract

The utility model relates to the technical field of clamping devices, and provides a clamping device for processing a piston skirt positioning hole, which comprises a bottom plate and a workbench erected at the top of the bottom plate, a plurality of clamping plates are arranged at the top of the workbench, the plurality of clamping plates are symmetrically arranged in pairs, and a positioning mechanism for clamping a workpiece is arranged at the top of the bottom plate. The positioning mechanism can ensure that reasonable force is applied to the clamping plate when the clamping plate clamps the workpiece, the workpiece can be firmly clamped, indentations cannot be left on the machining face of the workpiece, and the positioning mechanism has the advantages that the surface of the workpiece is protected, machining precision is improved, follow-up treatment is reduced, and working efficiency is enhanced; according to the clamp, a plurality of workpieces can be clamped at the same time, the operation time and the clamp adjusting frequency are reduced, meanwhile, the arc-shaped elastic pieces enable the clamping plates to adapt to clamping of the workpieces with different diameters, universality is improved, the materials of the clamping plates can further effectively prevent the workpieces from generating indentations in the clamping process, and therefore the completeness of the workpieces is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping device for machining a piston skirt positioning hole. Background Art

[0002] The existing device facilitates the driving device to move the second frame plate on one side of the clamping plate frame through the setting of the screw guide rail. When the second frame plate is horizontally close to the first frame plate, the outer side of the workpiece to be processed is fixed and clamped, which is convenient for subsequent processing operations.

[0003] The above-mentioned device cannot reasonably control the clamping force of the workpiece when clamping the workpiece, especially when clamping the high-precision machined surface of the piston skirt. Unreasonable clamping force can easily cause indentations on the machined surface, thereby affecting the quality of the high-precision machined surface of the piston skirt. Therefore, a clamping device for processing piston skirt positioning holes is needed. Utility Model Content

[0004] In order to address the shortcomings of the prior art, the present invention provides a clamping device for machining piston skirt positioning holes, which solves the technical problem that the above-mentioned background technology cannot reasonably control the clamping force of the workpiece, resulting in indentations.

[0005] The technical solution of the utility model is as follows: a clamping device for machining a piston skirt positioning hole, comprising a base plate and a workbench mounted on top of the base plate, a plurality of clamping plates arranged symmetrically in pairs on top of the workbench, and a positioning mechanism for clamping a workpiece on top of the base plate;

[0006] The positioning mechanism includes a power block arranged on the base plate, a limiting component is provided at the bottom of the power block to enable it to slide in a direction along the top of the base plate, a mounting rod is fixedly connected to the side of the power block, a pressure measuring shell is fixedly connected to the side of the mounting rod away from the power block, a pressure control component is provided inside the pressure measuring shell to control the clamping force of the workpiece, a clamping plate is provided at one end of the pressure measuring shell away from the mounting rod, and a power component is provided on the base plate to drive the mounting rod to move oppositely so that the clamping plate clamps the workpiece.

[0007] Preferably, the power assembly includes a cylinder fixed on the base plate, the telescopic end of the cylinder is fixedly connected to the same moving plate, the top of the same moving plate is fixedly connected to the vertical moving rod, the vertical moving rod is slidably sleeved on the inner wall of the base plate, the top of the vertical moving rod is hinged with a push-pull plate, and the push-pull plate is hinged to the power block at one end away from the vertical moving rod.

[0008] Preferably, the limiting assembly includes a fixed displacement block fixed to the bottom of the power block, and a fixed displacement groove for sliding of the fixed displacement block is provided on the top of the bottom plate.

[0009] Preferably, the pressure control assembly includes a pressure measuring rod slidably sleeved inside the pressure measuring shell, the inner wall of the pressure measuring shell is provided with a reset assembly for directional reset of the pressure measuring rod along its inner wall, the splint is fixed to one end of the pressure measuring rod away from the pressure measuring shell, and the inner wall of the pressure measuring shell is fixedly connected to a pressure sensor.

[0010] Preferably, the reset assembly includes a groove transversely opened on the inner wall of the pressure measuring shell, the inner wall of the groove is slidably connected to a slider, the inner wall of the groove is fixedly connected to a slide rod, the slider is sleeved on the outer wall of the slide rod, the outer wall of the slide rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the slider and the groove.

[0011] Preferably, the material of the splint includes but is not limited to rubber or latex, and an arc-shaped elastic sheet is fixedly connected to the inner wall of the splint.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The positioning mechanism of the utility model can ensure that the clamping plate exerts a reasonable force when clamping the workpiece, which can not only firmly clamp the workpiece but also will not leave indentations on the processing surface of the workpiece. It has the advantages of protecting the workpiece surface, improving processing accuracy, reducing subsequent processing, and enhancing work efficiency.

[0014] 2. The utility model can clamp multiple workpieces at the same time, reducing the operation time and the number of fixture adjustments. At the same time, the arc-shaped elastic sheet enables the clamping plate to adapt to the clamping of workpieces of different diameters, thereby improving versatility. The material of the clamping plate can further effectively prevent the workpiece from generating indentations during the clamping process, thereby protecting the integrity of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 The utility model proposed Figure 2 Schematic diagram of the enlarged structure of A;

[0019] Figure 4 This is a schematic diagram of the partial cross-sectional structure proposed by the utility model.

[0020] In the figure: 1. Base plate; 2. Workbench; 3. Clamp; 31. Arc-shaped elastic sheet; 4. Positioning mechanism; 41. Cylinder; 42. Vertical moving rod; 43. Push-pull plate; 44. Power block; 45. Mounting rod; 46. Pressure measuring shell; 47. Pressure control assembly; 471. Pressure measuring rod; 472. Pressure sensor; 473. Spring. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The existing device cannot reasonably control the clamping force of the workpiece when clamping the workpiece, especially when clamping the high-precision machined surface of the piston skirt. Unreasonable clamping force can easily cause indentations on the machined surface, thereby affecting the quality of the high-precision machined surface of the piston skirt. Figure 1-Figure 4 The present embodiment provides a clamping device for processing piston skirt positioning holes, including a base plate 1 and a workbench 2 mounted on the top of the base plate 1. A plurality of clamping plates 3 are arranged on the top of the workbench 2. The plurality of clamping plates 3 are symmetrically arranged in groups of two, and can clamp multiple workpieces at the same time, thereby improving work efficiency and processing accuracy and reducing operation time and the number of fixture adjustments.

[0023] refer to Figure 4 As shown, the material of the splint 3 includes but is not limited to rubber and latex materials, and the inner wall of the splint 3 is fixedly connected with an arc-shaped elastic sheet 31. The arc-shaped elastic sheet 31 enables the splint 3 to adapt to clamping workpieces of different diameters. At the same time, the material of the splint 3 can effectively prevent the workpiece from generating indentations during the clamping process, thereby protecting the surface of the workpiece.

[0024] refer to Figure 2-Figure 4As shown, the existing device cannot reasonably control the clamping force of the workpiece when clamping it, especially when clamping the high-precision machined surface of the piston skirt. Unreasonable clamping force can easily cause indentations on the machined surface, thereby affecting the quality of the high-precision machined surface of the piston skirt. In order to reasonably control the clamping force while achieving a firm workpiece positioning effect, the following settings are made: a positioning mechanism 4 for clamping the workpiece is provided on the top of the base plate 1, and the positioning mechanism 4 includes a power block 44 arranged on the base plate 1, and a limit assembly is provided at the bottom of the power block 44 to enable it to slide in a direction along the top of the base plate 1, and the limit assembly includes a fixed displacement block fixed at the bottom of the power block 44, and a fixed displacement groove is provided on the top of the base plate 1 for the fixed displacement block to slide. The side of the power block 44 is fixedly connected to a mounting rod 45, and the side of the mounting rod 45 away from the power block 44 is fixedly connected to a pressure measuring shell 46. The clamping plate 3 is arranged at one end of the pressure measuring shell 46 away from the mounting rod 45. The base plate 1 is provided with a power assembly for driving the mounting rod 45 to move so that the clamping plate 3 clamps the workpiece. The power assembly includes a cylinder 41 fixed to the base plate 1. The telescopic end of the cylinder 41 is fixedly connected to the same moving plate, and the top of the same moving plate is fixedly connected to a vertical moving plate. Rod 42, the vertical moving rod 42 is slidably sleeved on the inner wall of the base plate 1, and the top of the vertical moving rod 42 is hinged with a push-pull plate 43, and the end of the push-pull plate 43 away from the vertical moving rod 42 is hinged to the power block 44. After placing the workpiece on the top of the workbench 2, the cylinder 41 is started, and the telescopic end of the cylinder 41 pulls the moving plate to move the vertical moving rod 42 downward. The downward movement of the vertical moving rod 42 causes the push-pull plate 43 to push the power block 44 to move, and the movement of the power block 44 causes the clamping plate 3 to move oppositely to achieve clamping of the workpiece.

[0025] refer to Figure 4 As shown, the interior of the pressure measuring shell 46 is provided with a pressure control component 47 for controlling the clamping force of the workpiece. The pressure control component 47 includes a pressure measuring rod 471 slidably sleeved inside the pressure measuring shell 46. The inner wall of the pressure measuring shell 46 is provided with a reset component for directional reset of the pressure measuring rod 471 along its inner wall. The reset component includes a groove transversely opened on the inner wall of the pressure measuring shell 46. The inner wall of the groove is slidably connected with a slider. The inner wall of the groove is fixedly connected with a slide rod. The slider is sleeved on the outer wall of the slide rod. The outer wall of the slide rod is sleeved with a spring 473. The two ends of the spring 473 are fixedly connected to the slider and the groove respectively. The inner wall of the pressure measuring shell 46 is fixedly connected with a pressure sensor 472. The clamp 3 During the process of clamping the workpiece, the pressure measuring rod 471 moves into the pressure measuring shell 46. When the pressure measuring rod 471 contacts the pressure sensor 472 and applies a certain pressure value to the pressure sensor 472, the pressure sensor 472 transmits a signal to the external controller. The external controller cuts off the power supply of the cylinder 41, so that the clamping plate 3 clamps the workpiece with a reasonable force without causing indentations on the workpiece processing surface, thereby maintaining the surface quality and precision of the workpiece, reducing the deformation of the workpiece or processing errors caused by uneven clamping, and eliminating the need for additional trimming or processing of the workpiece, thereby saving time and cost, while ensuring the stability and reliability of clamping and improving overall work efficiency.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping device for machining a piston skirt positioning hole, comprising a base plate (1) and a workbench (2) mounted on top of the base plate (1), characterized in that: A plurality of clamping plates (3) are provided on the top of the workbench (2), and the plurality of clamping plates (3) are symmetrically arranged in groups of two. A positioning mechanism (4) for clamping a workpiece is provided on the top of the base plate (1); The positioning mechanism (4) includes a power block (44) arranged on the base plate (1), a limit assembly is arranged at the bottom of the power block (44) so that it can slide directionally along the top of the base plate (1), a side of the power block (44) is fixedly connected to a mounting rod (45), a side of the mounting rod (45) away from the power block (44) is fixedly connected to a pressure measuring shell (46), a pressure control assembly (47) for controlling the clamping force of the workpiece is arranged inside the pressure measuring shell (46), the clamping plate (3) is arranged at one end of the pressure measuring shell (46) away from the mounting rod (45), and a power assembly is arranged on the base plate (1) for driving the mounting rod (45) to move oppositely so that the clamping plate (3) clamps the workpiece.

2. A clamping device for machining a piston skirt positioning hole according to claim 1, characterized in that: The power assembly comprises a cylinder (41) fixed on the base plate (1), the telescopic end of the cylinder (41) is fixedly connected to a co-moving plate, the top of the co-moving plate is fixedly connected to a vertical moving rod (42), the vertical moving rod (42) is slidably sleeved on the inner wall of the base plate (1), the top end of the vertical moving rod (42) is hinged to a push-pull plate (43), and the end of the push-pull plate (43) away from the vertical moving rod (42) is hinged to a power block (44).

3. The clamping device for machining a piston skirt positioning hole according to claim 1, characterized in that: The position limiting assembly comprises a fixed displacement block fixed on the bottom of the power block (44), and a fixed displacement groove for the fixed displacement block to slide is provided on the top of the bottom plate (1).

4. The clamping device for machining a piston skirt positioning hole according to claim 1, characterized in that: The pressure control assembly (47) includes a pressure measuring rod (471) slidably sleeved inside a pressure measuring housing (46); the inner wall of the pressure measuring housing (46) is provided with a reset assembly for directional reset of the pressure measuring rod (471) along its inner wall; a clamping plate (3) is fixed to one end of the pressure measuring rod (471) away from the pressure measuring housing (46); and a pressure sensor (472) is fixedly connected to the inner wall of the pressure measuring housing (46).

5. The clamping device for machining a piston skirt positioning hole according to claim 4, characterized in that: The reset assembly includes a groove transversely opened on the inner wall of the pressure measuring shell (46), the inner wall of the groove is slidably connected to a slider, the inner wall of the groove is fixedly connected to a slide rod, the slider is sleeved on the outer wall of the slide rod, the outer wall of the slide rod is sleeved with a spring (473), and the two ends of the spring (473) are fixedly connected to the slider and the groove respectively.

6. The clamping device for machining a piston skirt positioning hole according to claim 1, characterized in that: The material of the splint (3) includes but is not limited to rubber or latex material, and an arc-shaped elastic sheet (31) is fixedly connected to the inner wall of the splint (3).

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