Grinding machine for machining crankshaft connecting rod neck

Abstract

The utility model discloses a grinding machine for machining a crankshaft connecting rod neck, and relates to the technical field of grinding machines. The grinding machine for machining the crankshaft connecting rod neck comprises a rack, an electric push rod, a grinding machine, a motor, a clamping base, a basic clamping block, an adjusting unit and a secondary clamping assembly. According to the grinding machine for machining the crankshaft connecting rod neck, through combination of the basic clamping block, the adjusting unit and the secondary clamping assembly, workpieces of different sizes and shapes can be stably and reliably clamped, the contact area of clamping point positions is large, multi-point-position clamping and fixing are achieved, deformation and displacement of the workpieces in the machining process are effectively prevented, and the machining efficiency is improved. And a solid foundation is provided for grinding. And a motor is matched to drive a workpiece to rotate, so that the grinding head can grind the connecting rod neck uniformly in all directions, and the machining precision and the surface quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, specifically to a grinding machine for machining crankshaft connecting rod journals. Background Technology

[0002] Crankshaft connecting rod journals are generally round with a smooth surface. They require high-precision machining to ensure a tight fit with the connecting rod. The surface of the connecting rod journal needs to be very smooth and have a regular shape. Grinding machines can achieve high-precision cylindrical machining, reduce surface roughness, and improve the wear resistance and service life of the crankshaft.

[0003] However, in the prior art, due to the large number of crankshaft connecting rod journal models, traditional clamping and positioning methods are not suitable for adapting to the numerous models of crankshaft connecting rod journal workpieces during grinding. This leads to easy displacement of the workpiece during processing, affecting the machining accuracy. Relying solely on a single clamping structure results in a small contact area and low friction at the clamping position, which cannot provide sufficient support and stability when grinding complex-shaped workpieces such as crankshaft connecting rod journals. To address the shortcomings of the prior art, this utility model provides a grinding machine for machining crankshaft connecting rod journals to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a grinding machine for machining crankshaft connecting rod journals. The combination of a basic clamping block, an adjusting unit, and a secondary clamping assembly enables stable and reliable clamping of workpieces of different sizes and shapes. The large contact area at the clamping points and multi-point clamping effectively prevent workpiece deformation and displacement during machining, providing a solid foundation for grinding. Combined with a motor that drives the workpiece to rotate, the grinding head can grind the connecting rod journal from all directions and evenly, improving machining accuracy and surface quality.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a grinding machine for machining crankshaft connecting rod journals, comprising a frame, an electric push rod, a grinding mill, a motor, a clamping base, a basic clamping block, an adjustment unit, and a secondary clamping assembly;

[0006] The electric actuator is mounted on the frame;

[0007] The mill is located at the output end of the electric push rod, and the output end of the mill is equipped with a grinding head.

[0008] The motor is mounted on the frame;

[0009] The clamping base is disposed at the output end of the motor;

[0010] The basic clamping block is slidably connected to the clamping base and is used to clamp the workpiece;

[0011] The adjustment unit is disposed on the clamping base and is used to adjust the basic clamping block;

[0012] The secondary clamping component is mounted on the base clamping block and is used for secondary clamping of the workpiece.

[0013] Preferably, the adjustment unit includes:

[0014] A limiting groove is provided inside the clamping base;

[0015] The adjusting block is slidably connected inside the limiting groove and fixedly connected to the base clamping block;

[0016] A bidirectional screw is rotatably connected within the clamping base and threadedly connected to the adjusting block.

[0017] Preferably, the secondary clamping assembly includes:

[0018] The slider is slidably connected inside the base clamping block;

[0019] A chuck is mounted on the slider;

[0020] The lead screw is rotatably connected to the slider and threadedly connected to the base clamping block.

[0021] Preferably, the slider and the clamp are fixed together by bolts.

[0022] Preferably, a track is fixedly connected to the frame, and a guide plate is slidably connected to the track on the mill.

[0023] Preferably, the frame is provided with a reinforcing bearing seat, which is used to support the rotating shaft connecting the clamping base and the motor output end.

[0024] This utility model discloses a grinding machine for machining crankshaft connecting rod journals, which has the following beneficial effects:

[0025] This grinding machine, used for machining crankshaft connecting rod journals, combines a basic clamping block, an adjusting unit, and a secondary clamping assembly. This combination enables stable and reliable clamping of workpieces of varying sizes and shapes. The large contact area at the clamping points and multi-point clamping effectively prevent workpiece deformation and displacement during machining, providing a solid foundation for the grinding process. The motor drives the workpiece to rotate, allowing the grinding head to grind the connecting rod journals comprehensively and evenly, improving machining accuracy and surface quality. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a first-person perspective schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0029] Figure 3 This is a disassembly diagram of the workpiece of this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the adjustment unit and the secondary clamping assembly of this utility model.

[0031] In the diagram: 1. Frame; 11. Reinforced bearing seat; 2. Electric push rod; 3. Grinding mill; 31. Grinding head; 32. Guide plate; 33. Track; 4. Motor; 5. Clamping base; 6. Basic clamping block; 7. Adjustment unit; 71. Limiting groove; 72. Adjusting block; 73. Bidirectional screw; 8. Secondary clamping assembly; 81. Slider; 82. Chuck; 83. Lead screw. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] This application provides a grinding machine for machining crankshaft connecting rod journals, solving the problems of existing grinding machines being inconvenient to adapt to a wide variety of crankshaft connecting rod journal workpieces, causing workpiece displacement during machining and affecting machining accuracy, and relying solely on a single clamping structure with a small contact area and low friction, which cannot provide sufficient support and stability when grinding complex-shaped workpieces such as crankshaft connecting rod journals.

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] Example 1: This utility model embodiment discloses a grinding machine for machining crankshaft connecting rod journals, according to the attached... Figure 1-4 As shown, it includes a frame 1, an electric push rod 2, a mill 3, a motor 4, a clamping base 5, a basic clamping block 6, an adjustment unit 7, and a secondary clamping assembly 8;

[0036] The frame 1 serves as the overall support structure for the grinding machine, providing an installation platform for other components.

[0037] The electric push rod 2 is mounted on the frame 1 and is used to drive the mill 3 to perform linear motion. When grinding is required, the electric push rod 2 is started, pushing the mill 3 close to the connecting rod neck of the workpiece. After reaching the appropriate processing distance, the electric push rod 2 is stopped.

[0038] The mill 3 is installed at the output end of the electric push rod 2, and the output end is equipped with a grinding head 31. The guide plate 32 on the mill 3 is slidably connected to the track 33 on the frame 1, and can move along the track 33 to ensure smooth feeding and uniform grinding of the grinding head 31. In use, the mill 3 is started, and the grinding head 31 begins to rotate at high speed to grind the connecting rod neck.

[0039] The motor 4 is fixed on the frame 1 and provides power to the clamping base 5, enabling the clamping base 5 to drive the workpiece to rotate.

[0040] The clamping base 5 is installed at the output end of the motor 4 and is used to fix and rotate the workpiece. Before machining, the crankshaft is installed on the clamping base 5, and the motor 4 drives the clamping base 5 to rotate, so that the connecting rod journal is machined evenly at all positions.

[0041] The base clamping block 6 is slidably connected to the clamping base 5 for initial clamping of the workpiece. Based on the shape and size of the crankshaft, the position of the base clamping block 6 is adjusted via the adjusting unit 7 to ensure a tight fit with the workpiece, thus achieving initial fixation of the workpiece.

[0042] The adjustment unit 7 includes a limiting groove 71, an adjusting block 72, and a bidirectional screw 73. During adjustment, rotating the bidirectional screw 73 causes the adjusting block 72 to move within the limiting groove 71 due to its threaded connection to the adjusting block 72 and its sliding within the limiting groove 71. This rotation of the bidirectional screw 73 moves the adjusting block 72 within the limiting groove 71, thereby causing the base clamping block 6 to move accordingly to accommodate different workpiece sizes and shapes.

[0043] The secondary clamping assembly 8 provides secondary clamping for the workpiece, further improving clamping stability. The secondary clamping assembly 8 includes a slider 81, a chuck 82, and a lead screw 83. The slider 81 is slidably connected inside the base clamping block 6, and the chuck 82 is fixed to the slider 81. By rotating the lead screw 83, which is threaded to the base clamping block 6 and rotatably connected to the slider 81, the rotation of the lead screw 83 causes the slider 81 to slide within the base clamping block 6, thereby moving the chuck 82 closer to or further away from the workpiece, achieving secondary clamping or loosening of the workpiece.

[0044] The combination of the basic clamping block 6, the adjustment unit 7, and the secondary clamping assembly 8 enables stable and reliable clamping of workpieces of different sizes and shapes. The large contact area at the clamping points and multi-point clamping effectively prevent workpiece deformation and displacement during processing, providing a solid foundation for grinding. In conjunction with the motor 4 driving the workpiece to rotate, the grinding head 31 can grind the connecting rod neck in all directions and evenly, improving machining accuracy and surface quality.

[0045] Example 2: This utility model embodiment discloses a grinding machine for machining crankshaft connecting rod journals, according to the attached... Figure 1-4 As shown, it includes a frame 1, an electric push rod 2, a mill 3, a motor 4, a clamping base 5, a basic clamping block 6, an adjustment unit 7, and a secondary clamping assembly 8;

[0046] The electric push rod 2 is mounted on the frame 1;

[0047] The mill 3 is located at the output end of the electric push rod 2, and the output end of the mill 3 is equipped with a grinding head 31.

[0048] Motor 4 is mounted on frame 1;

[0049] The clamping base 5 is located at the output end of the motor 4;

[0050] The basic clamping block 6 is slidably connected to the clamping base 5 and is used to clamp the workpiece;

[0051] The adjustment unit 7 is disposed on the clamping base 5 and is used to adjust the base clamping block 6;

[0052] The secondary clamping component 8 is mounted on the base clamping block 6 and is used for secondary clamping of the workpiece.

[0053] The secondary clamping component 8 includes:

[0054] Slider 81 is slidably connected inside the base clamping block 6;

[0055] The chuck 82 is mounted on the slider 81;

[0056] The lead screw 83 is rotatably connected to the slider 81 and threadedly connected to the base clamping block 6.

[0057] The slider 81 and the chuck 82 are fixed together by bolts, which ensures that the model of the chuck 82 can be easily replaced, thereby adapting to the clamping and limiting of workpieces of various shapes, and further ensuring the stability and reliability of the workpiece clamping process.

[0058] The frame 1 is provided with a reinforcing bearing 11, which is used to support the shaft connecting the clamping base 5 and the output end of the motor 4, thereby ensuring the good stability of the clamping base 5.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grinding machine for machining crankshaft connecting rod journals, characterized in that, include: Rack (1); An electric push rod (2) is mounted on the frame (1); A mill (3) is located at the output end of the electric push rod (2), and a mill head (31) is provided at the output end of the mill (3); The motor (4) is mounted on the frame (1); A clamping base (5) is disposed at the output end of the motor (4); The base clamp (6) is slidably connected to the clamping base (5) and used to clamp the workpiece; An adjustment unit (7) is disposed on the clamping base (5) and is used to adjust the base clamp (6); The secondary clamping assembly (8) is disposed on the basic clamping block (6) and is used for secondary clamping of the workpiece.

2. A grinding machine for machining crankshaft connecting rod journals according to claim 1, characterized in that, The adjustment unit (7) includes: A limiting groove (71) is provided inside the clamping base (5); The adjusting block (72) is slidably connected inside the limiting groove (71) and fixedly connected to the base clamping block (6); A bidirectional screw (73) is rotatably connected inside the clamping base (5) and threadedly connected to the adjusting block (72).

3. A grinding machine for machining crankshaft connecting rod journals according to claim 1, characterized in that, The secondary clamping assembly (8) includes: The slider (81) is slidably connected inside the base clamp (6); A chuck (82) is disposed on the slider (81); The lead screw (83) is rotatably connected to the slider (81) and threadedly connected to the base clamp (6).

4. A grinding machine for machining crankshaft connecting rod journals according to claim 3, characterized in that, The slider (81) and the clamp (82) are fixed together by bolts.

5. A grinding machine for machining crankshaft connecting rod journals according to claim 1, characterized in that, The frame (1) is fixedly connected to a track (33), and the mill (3) is provided with a guide plate (32) that is slidably connected to the track (33).

6. A grinding machine for machining crankshaft connecting rod journals according to claim 1, characterized in that, The frame (1) is provided with a reinforcing bearing seat (11), which is used to support the shaft connecting the clamping base (5) and the output end of the motor (4).

Images