Diameter reducing machine for reducing diameters of two ends of piston main body

Abstract

The utility model provides a reducing machine for reducing the diameters of two ends of a piston main body, which belongs to the technical field of piston main body processing and comprises a machine plate, two oil cylinders are symmetrically and fixedly connected to the upper end face of the machine plate, and the driving ends of the two oil cylinders are fixedly connected with mounting plates. Mounting plates are arranged on the machine plate, reducing dies are fixedly connected to the mounting plates, a bearing plate is arranged between the reducing dies, two lower clamping seats are symmetrically and fixedly connected to the upper end face of the bearing plate, and a position changing structure used for changing positions of the lower clamping seats is arranged on the machine plate. By means of the bearing plate, the lower clamping seat, the transposition structure, the support, the hydraulic cylinder and the upper clamping seat, the piston body can be continuously subjected to hole shrinkage machining, time is reasonably utilized, the piston body is prevented from being fixed by shutdown, continuity is high, the hole shrinkage machining efficiency of the piston body is remarkably improved, and production cost is reduced. The problem that in the prior art, a piston body cannot be continuously subjected to hole shrinkage machining is solved.

Description

Technical Field

[0001] This utility model relates to the field of piston body processing technology, and more specifically, to a diameter reduction machine for reducing the diameter at both ends of a piston body. Background Technology

[0002] In the field of mechanical manufacturing, pistons are core components in power equipment such as internal combustion engines and compressors. The piston body is usually made of metal materials and has a certain strength and rigidity to meet the working requirements under harsh conditions such as high pressure, high temperature and high speed. However, in certain specific application scenarios, the diameters at both ends of the piston body need to be reduced to meet specific assembly requirements or improve the operating efficiency of the equipment.

[0003] A search revealed that patent application CN202223467165.9 discloses a diameter reduction machine, comprising: a cabinet, a diameter reduction mold, and a lower clamping plate; an electrical control box is connected to the top of the cabinet, and the cabinet serves as a load-bearing foundation; a hydraulic cylinder is connected to the back of the electrical control box; one end of a guide rod is connected to one side of the hydraulic cylinder; an L-shaped plate is connected to the top of the cabinet; and a second upper clamping plate is connected to the end of the second hydraulic telescopic rod. By rotating the T-shaped threaded rod, the second hydraulic telescopic rod is moved, thereby increasing the distance between the first and second upper clamping plates, thus increasing the clamping range and making the clamping more secure. By passing the through shaft through the rectangular groove and then resetting it, the diameter reduction mold can be installed in the balance plate. By engaging the male and female buckles, the end of the diameter reduction mold can be connected to the end of the plunger. When disassembly is required, simply rotate the through shaft 90° again and pull the diameter reduction mold outward to remove it, thus facilitating the disassembly and replacement of the diameter reduction mold. However, the following defects still exist:

[0004] (1) The existing reducing machine is inconvenient to continuously reduce the diameter of the piston body. It is necessary to remove the piston body after the previous reducing process before the next piston body can be reduced, which results in low processing efficiency.

[0005] (2) The existing diameter reduction machine is not convenient to accurately fix the piston body, and the position deviation is prone to cause poor diameter reduction effect.

[0006] Therefore, we have made improvements and proposed a diameter reduction machine that reduces the diameter at both ends of the piston body. Utility Model Content

[0007] The purpose of this invention is to address the problems of inconvenience in continuously reducing the diameter of the piston body and poor positioning accuracy.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A diameter reduction machine is used to reduce the diameter at both ends of the piston body to improve the above-mentioned problems.

[0010] The present invention is as follows:

[0011] The machine includes a machine plate, on which two hydraulic cylinders are symmetrically and fixedly connected at their upper ends. Each of the two hydraulic cylinders has a mounting plate fixedly connected to its drive end. A reducing die is fixedly connected to each mounting plate. A bearing plate is provided between the reducing dies. Two lower clamping seats are symmetrically and fixedly connected to the upper ends of the bearing plate. A repositioning structure for changing the position of the lower clamping seats is provided on the machine plate. Two brackets are symmetrically and fixedly connected to the upper ends of the bearing plate. Hydraulic cylinders are fixedly connected to the upper ends of each bracket. The drive ends of the hydraulic cylinders pass through the brackets and are fixedly connected to upper clamping seats. An alignment structure is provided at the front end of the upper end of the machine plate.

[0012] As a preferred technical solution of this utility model, the repositioning structure includes a first bearing fixed to the lower end face of the machine plate, a rotating tube fixedly connected to the inner ring of the first bearing, a spline shaft slidably connected to the rotating tube, the top end of the spline shaft fixedly connected to the lower end face of the bearing plate, a second bearing provided at the bottom end of the spline shaft, the inner sidewall of the inner ring of the second bearing fixedly connected to the bottom end of the spline shaft, a lifting plate fixedly connected to the bottom end of the second bearing, a first telescopic cylinder fixedly connected to the upper end face of the machine plate, the driving end of the first telescopic cylinder penetrating the machine plate and fixedly connected to the lifting plate, a gear fixedly connected to the rotating tube, a fixed plate fixedly connected to the lower end face of the machine plate, a second telescopic cylinder fixedly connected to the fixed plate, and a rack meshing with the gear fixedly connected to the driving end of the second telescopic cylinder penetrating the fixed plate.

[0013] As a preferred technical solution of this utility model, the alignment structure includes a mounting frame fixed to the front end of the upper end of the machine plate, a bidirectional screw rotatably connected inside the mounting frame, a servo motor fixedly connected to one end of the mounting frame, the drive end of the servo motor fixedly connected to the shaft end of the bidirectional screw, two alignment plates symmetrically and threadedly connected to the bidirectional screw, guide rods slidably connected inside the bottom ends of the two alignment plates, and the two ends of the guide rods fixedly connected to the inner sidewalls of the two ends of the mounting frame, respectively.

[0014] As a preferred technical solution of this utility model, a frame is fixedly connected to the lower end face of the machine plate, and support feet are fixedly connected to the four corners of the lower end face of the frame.

[0015] As a preferred technical solution of this utility model, the lower end face of the mounting plate is connected to sliders by internal hexagon bolts at both ends, and each slider is slidably connected to a slide rail, which is fixedly connected to the machine plate.

[0016] As a preferred technical solution of this utility model, the machine plate is provided with a through hole that mates with the spline shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the solution of this utility model:

[0019] 1. By setting up a bearing plate, lower clamp, shifting structure, bracket, hydraulic cylinder and upper clamp, continuous diameter reduction machining of piston body is realized. Time is used reasonably to avoid downtime to fix piston body. The continuity is strong and the efficiency of piston body diameter reduction machining is significantly improved. It solves the problem of inconvenience in continuous diameter reduction machining of piston body in the prior art.

[0020] 2. By setting up an alignment structure, the piston body can be aligned and adjusted, enabling precise positioning of the piston body, improving the accuracy of the diameter reduction machining at both ends of the piston body, improving the effect of the diameter reduction machining, and solving the problem of poor machining effect caused by poor fixing accuracy in the prior art. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 A schematic diagram of the rear structure provided by this utility model;

[0023] Figure 3 A schematic diagram of the transposition structure provided by this utility model;

[0024] Figure 4 This is a front view structural diagram of the present invention;

[0025] Figure 5 A schematic diagram of the alignment structure provided by this utility model;

[0026] Figure 6 This is a top view of the structure provided for this utility model.

[0027] The image shows:

[0028] 1. Machine plate; 2. Hydraulic cylinder; 3. Mounting plate; 4. Reduction die; 5. Bearing plate; 6. Lower clamp; 7. Shifting structure; 701. First bearing; 702. Rotary tube; 703. Splined shaft; 704. Second bearing; 705. Lifting plate; 706. First telescopic cylinder; 707. Gear; 708. Fixing plate; 709. Second telescopic cylinder; 7010. Rack; 8. Bracket; 9. Hydraulic cylinder; 10. Upper clamp; 11. Alignment structure; 1101. Mounting frame; 1102. Bidirectional screw; 1103. Servo motor; 1104. Alignment plate; 1105. Guide rod; 12. Frame; 13. Support foot; 14. Slider; 15. Slide rail; 16. Through hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment proposes a diameter reduction machine for reducing the diameter at both ends of a piston body. It includes a machine plate 1. Two hydraulic cylinders 2 are symmetrically and fixedly connected to the upper surface of the machine plate 1. A mounting plate 3 is fixedly connected to the drive end of each of the two hydraulic cylinders 2. A diameter reduction mold 4 is fixedly connected to each mounting plate 3. The two hydraulic cylinders 2 drive the diameter reduction mold 4 on the mounting plate 3 to reduce the diameter at both ends of the piston body. A bearing plate 5 is provided between the diameter reduction molds 4. Two lower clamps 6 are symmetrically and fixedly connected to the upper surface of the bearing plate 5. A repositioning structure 7 for repositioning the lower clamps 6 is provided on the machine plate 1. Two supports 8 are symmetrically and fixedly connected to the upper surface of the bearing plate 5. A hydraulic cylinder 9 is fixedly connected to the upper surface of each support 8. The drive end of each hydraulic cylinder 9 passes through the support 8 and is fixedly connected to an upper clamp 10. The hydraulic cylinder 9 drives the upper clamp 10 to descend, thereby facilitating the clamping and fixing of the piston body. An alignment structure 11 is provided at the front end of the upper surface of the machine plate 1.

[0031] like Figure 1 , Figure 3 and Figure 4As shown, in a preferred embodiment, based on the above method, the shifting structure 7 further includes a first bearing 701 fixed to the lower end face of the machine plate 1. A rotating tube 702 is fixedly connected to the inner ring of the first bearing 701. A spline shaft 703 is slidably connected inside the rotating tube 702. The top end of the spline shaft 703 is fixedly connected to the lower end face of the bearing plate 5. A second bearing 704 is provided at the bottom end of the spline shaft 703. The inner sidewall of the inner ring of the second bearing 704 is fixedly connected to the bottom end of the spline shaft 703. A lifting plate 705 is fixedly connected to the bottom end of the second bearing 704. A first telescopic cylinder 706 is fixedly connected to the upper end face of the machine plate 1. The driving end of the first telescopic cylinder 706 penetrates the machine plate 1 and is fixedly connected to the lifting plate 705. A gear 7 is fixedly connected to the rotating tube 702. 07. A fixed plate 708 is fixedly connected to the lower end face of the machine plate 1. A second telescopic cylinder 709 is fixedly connected to the fixed plate 708. The driving end of the second telescopic cylinder 709 passes through the fixed plate 708 and is fixedly connected to a rack 7010 that meshes with the gear 707. When it is necessary to change position, the first telescopic cylinder 706 drives the lifting plate 705 to rise, which drives the spline shaft 703 and its top bearing plate 5 to rise. At the same time, the second telescopic cylinder 709 drives the rack 7010 to move. The rack 7010 drives the gear 707 and the rotating tube 702 to rotate, which in turn drives the bearing plate 5 and its lower clamp 6 to rotate 180 degrees. Then, the first telescopic cylinder 706 drives the lifting plate 705 to fall, which resets the bearing plate 5, thus facilitating continuous diameter reduction machining of both ends of the piston body.

[0032] like Figure 1 and Figure 5 As shown, in a preferred embodiment, based on the above method, the alignment structure 11 further includes a mounting frame 1101 fixed to the front end of the upper end of the machine plate 1. A bidirectional screw 1102 is rotatably connected inside the mounting frame 1101. A servo motor 1103 is fixedly connected to one end of the mounting frame 1101. The drive end of the servo motor 1103 is fixedly connected to the shaft end of the bidirectional screw 1102. Two alignment plates 1104 are symmetrically and threadedly connected to the bidirectional screw 1102. Guide rods 1105 are slidably connected to the bottom ends of the two alignment plates 1104. The two ends of the guide rods 1105 are fixedly connected to the inner sidewalls of the two ends of the mounting frame 1101, respectively. By driving the bidirectional screw 1102 to rotate through the servo motor 1103, the two alignment plates 1104 can move inward or outward simultaneously. When the two alignment plates 1104 move inward simultaneously, the centering position of the piston body can be adjusted to ensure the accuracy of the diameter reduction process.

[0033] like Figure 1 and Figure 2As shown, in a preferred embodiment, based on the above method, a frame 12 is fixedly connected to the lower end face of the machine plate 1, and support feet 13 are fixedly connected to the four corners of the lower end face of the frame 12; this provides a stable support platform for the entire reducing machine, ensuring the stability and safety of the equipment.

[0034] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the lower end face of the mounting plate 3 is further provided with sliders 14 connected to both ends by internal hexagonal bolts. Each slider 14 is slidably connected to a slide rail 15, which is fixedly connected to the machine plate 1. This enables the mounting plate 3 to move stably, ensuring stability and accuracy during the diameter reduction process.

[0035] like Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the machine plate 1 is further provided with a through hole 16 that cooperates with the spline shaft 703; the through hole 16 provides space for the spline shaft 703 to pass through, ensuring the normal operation of the transposition structure 7.

[0036] Specifically, in use, the diameter reduction machine for reducing the diameter at both ends of the piston body operates as follows: When processing the previous piston body, the other piston body is placed in the outer lower clamp 6, and then the servo motor 1103 is started. The servo motor 1103 drives the bidirectional screw 1102 to rotate, thereby enabling the two alignment plates 1104 to move inward simultaneously, thus adjusting the centering position of the piston body. When it is necessary to perform diameter reduction processing on both ends of the next piston body, the first telescopic cylinder 706 drives the lifting plate 705 to rise. The first telescopic cylinder 709 drives the spline shaft 703 and its top bearing plate 5 to rise. At the same time, the second telescopic cylinder 709 drives the rack 7010 to move. The rack 7010 drives the gear 707 and the rotary tube 702 to rotate, thereby driving the bearing plate 5 and its lower clamp 6 to rotate 180 degrees. Then, the first telescopic cylinder 706 drives the lifting plate 705 to descend and reset the bearing plate 5. Then, the hydraulic cylinder 2 drives the mounting plate 3 and the diameter reduction mold 4 to move inward at the same time, thereby reducing the diameter of both ends of the piston body. This facilitates continuous diameter reduction of the piston body and improves processing efficiency.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A diameter reduction machine for reducing the diameter at both ends of a piston body, comprising a machine plate (1), characterized in that, The upper end of the machine plate (1) is symmetrically connected to two hydraulic cylinders (2), and the driving ends of the two hydraulic cylinders (2) are fixedly connected to mounting plates (3). The mounting plates (3) are fixedly connected to reducing molds (4), and a bearing plate (5) is provided between the reducing molds (4). The upper end of the bearing plate (5) is symmetrically connected to two lower clamps (6), and the machine plate (1) is provided with a shifting structure (7) for shifting the lower clamps (6). The upper end of the bearing plate (5) is symmetrically connected to two brackets (8), and the upper end of the two brackets (8) is fixedly connected to a hydraulic cylinder (9). The driving ends of the hydraulic cylinders (9) pass through the brackets (8) and are fixedly connected to an upper clamp (10). The upper end of the machine plate (1) is provided with an alignment structure (11).

2. A diameter reduction machine for reducing the diameter at both ends of a piston body according to claim 1, characterized in that, The shifting structure (7) includes a first bearing (701) fixed to the lower end face of the machine plate (1). A rotating tube (702) is fixedly connected to the inner ring of the first bearing (701). A splined shaft (703) is slidably connected inside the rotating tube (702). The top end of the splined shaft (703) is fixedly connected to the lower end face of the bearing plate (5). A second bearing (704) is provided at the bottom end of the splined shaft (703). The inner side wall of the inner ring of the second bearing (704) is fixedly connected to the bottom end of the splined shaft (703). A lifting plate (704) is fixedly connected to the bottom end of the second bearing (704). 05), a first telescopic cylinder (706) is fixedly connected to the upper end face of the machine plate (1). The driving end of the first telescopic cylinder (706) passes through the machine plate (1) and is fixedly connected to the lifting plate (705). A gear (707) is fixedly connected to the rotating tube (702). A fixing plate (708) is fixedly connected to the lower end face of the machine plate (1). A second telescopic cylinder (709) is fixedly connected to the fixing plate (708). The driving end of the second telescopic cylinder (709) passes through the fixing plate (708) and is fixedly connected to a rack (7010) that meshes with the gear (707).

3. A diameter reduction machine for reducing the diameter at both ends of a piston body according to claim 1, characterized in that, The alignment structure (11) includes a mounting frame (1101) fixed to the front end of the upper end of the machine plate (1). A bidirectional screw (1102) is rotatably connected inside the mounting frame (1101). A servo motor (1103) is fixedly connected to one end of the mounting frame (1101). The drive end of the servo motor (1103) is fixedly connected to the shaft end of the bidirectional screw (1102). Two alignment plates (1104) are symmetrically and threadedly connected on the bidirectional screw (1102). A guide rod (1105) is slidably connected inside the bottom end of the two alignment plates (1104). The two ends of the guide rod (1105) are fixedly connected to the inner sidewalls of the two ends of the mounting frame (1101).

4. A diameter reduction machine for reducing the diameter at both ends of a piston body according to claim 1, characterized in that, The lower end face of the machine plate (1) is fixedly connected to the frame (12), and the four corners of the lower end face of the frame (12) are fixedly connected to the support feet (13).

5. A diameter reduction machine for reducing the diameter at both ends of a piston body according to claim 1, characterized in that, The lower end face of the mounting plate (3) is connected to two sliders (14) by internal hex bolts. Each slider (14) is slidably connected to a slide rail (15), and the slide rail (15) is fixedly connected to the machine plate (1).

6. A diameter reduction machine for reducing the diameter at both ends of a piston body according to claim 1, characterized in that, The machine plate (1) has a through hole (16) that mates with the spline shaft (703).

Images