Piston cylinder body punching device

Abstract

The utility model relates to the technical field of piston cylinder body machining equipment, provides a piston cylinder body punching device, and solves the problem that in the existing piston cylinder body machining process, the coaxiality of mounting hole positions on the two radial sides is poor. The device comprises an end supporting mechanism and an end clamping mechanism which are arranged at the two axial ends of the piston cylinder body respectively, a punching mechanism arranged above the end supporting mechanism, and a rotating mechanism for driving the piston cylinder body to rotate, and is characterized in that the end supporting mechanism comprises a reference sleeve and a positioning pin, and the inner side wall of the reference sleeve extends inwards to form a positioning part; the guide groove penetrates through the reference sleeve, and the two ends of the guide groove are arranged at the top and the bottom of the reference sleeve respectively; the device further comprises a jacking structure, the jacking structure comprises a linear driving unit and an elastic pressing head, the output end of the linear driving unit is connected with the elastic pressing head, and the elastic pressing head elastically abuts against the positioning pin and can enable the positioning pin to abut against the tail end of the guide groove.

Description

Technical Field

[0001] The utility model relates to the technical field of piston cylinder processing equipment, in particular to a piston cylinder punching device. Background Art

[0002] A pair of mounting holes are formed on the side wall of the end of some models of piston cylinders, and the mounting holes are specifically arranged on both sides of the cylinder in the radial direction. In addition, the piston cylinder is formed with a convex thickened portion at the location where the mounting holes are formed to improve the local strength. In the prior art, the thickened portion is integrally formed during the casting process of the piston cylinder. In the later processing of the mounting holes, the piston cylinder is generally positioned by the thickened portion. However, if the outer contours of the thickened portions on both sides are slightly less consistent or the positioning surface flatness is not good, it will lead to poor coaxiality of the mounting holes on both sides after processing.

[0003] For this purpose, we propose a piston cylinder punching device. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model provides a piston cylinder punching device, which solves the problem of poor coaxiality of radial mounting holes on both sides during the existing piston cylinder processing process.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A piston cylinder punching device comprises an end support mechanism and an end clamping mechanism respectively arranged at two axial ends of the piston cylinder, a punching mechanism arranged above the end support mechanism, and a rotating mechanism for driving the piston cylinder to rotate, characterized in that:

[0009] The end support mechanism includes a reference sleeve and a positioning pin. The inner side wall of the reference sleeve extends inward to form a positioning portion. The reference sleeve is provided with a guide groove surrounding a half circumference of the sleeve body. The guide groove passes through the reference sleeve and its two ends are respectively arranged at the top and bottom of the reference sleeve. The positioning pin can pass through the guide groove and then be installed in the installation hole formed after drilling.

[0010] The device also includes a tightening structure, which includes a linear drive unit and an elastic pressure head. The output end of the linear drive unit is connected to the elastic pressure head, which elastically abuts against the positioning pin and can press the positioning pin against the end of the guide groove under the action of the linear drive unit.

[0011] Furthermore, the left and right sides of the reference sleeve are fixedly connected to the support frame through support ears and bolts respectively.

[0012] Preferably, the support frame is a lifting structure.

[0013] Furthermore, the positioning portion is a ring structure.

[0014] Furthermore, the end clamping mechanism is a chuck, the rotating mechanism is a motor, and the motor cooperates with the chuck in transmission.

[0015] Furthermore, the linear drive unit is a cylinder, and the elastic pressure head includes a push block, a connecting column and a spring. The push block is slidably connected to the connecting column, one end of the connecting column is connected to a locking nut for limiting the push block, and the other end is threadedly connected to the piston rod of the cylinder, and the two ends of the spring respectively abut against the push block and the piston rod.

[0016] Preferably, the cross section of the push block is 7-shaped, and the upper end of the push block abuts against the head of the positioning pin.

[0017] Furthermore, the device is provided with a center frame at the end support mechanism and the end clamping mechanism, and rollers are respectively installed at the ends of the support members of the center frame, and the rollers can abut against the surface of the piston cylinder body.

[0018] Furthermore, the reference sleeve is detachably provided with rubber strips on both sides of the bottom of the groove, and the rubber strips extend into the guide groove and can abut against the positioning pins.

[0019] Preferably, the reference sleeve is provided with assembly grooves connected with the positioning grooves on both sides of the groove bottom, the rubber strip is fixed in the assembly groove by means of clamping plates and bolts, and the side wall of the rubber strip facing away from the guide groove is spaced apart from the side wall of the assembly groove.

[0020] (III) Beneficial effects

[0021] The utility model provides a piston cylinder punching device, which has the following beneficial effects: after a hole is drilled on one side of the piston cylinder, a positioning pin is installed in the hole, and then a rotating mechanism is used to drive the piston cylinder to rotate 180 degrees, and the positioning pin is pressed against the end of the guide groove through a tightening structure to ensure that the piston cylinder is rotated into place, and finally the remaining hole is drilled on the other side of the piston cylinder to ensure the coaxiality of the two holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the partial enlargement of the middle A;

[0024] Figure 3 It is a structural schematic diagram of the reference sleeve in the utility model;

[0025] Figure 4 for Figure 3 A schematic diagram of the enlarged part of point B in the middle;

[0026] Figure 5 It is a schematic diagram of the coordination of the positioning pin, the guide groove, the clamping plate and the rubber strip in the utility model.

[0027] In the figure:

[0028] 1. Chuck; 2. Center frame; 21. Roller; 3. Reference sleeve; 31. Guide groove; 32. Support ear; 33. Assembly groove; 34. Rubber strip; 35. Clamp; 36. Positioning pin; 361. Guide part; 4. Support frame; 5. Cylinder; 51. Connecting column; 52. Spring; 53. Push block; 54. Locking nut. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Refer to the attached Figure 1-5 A piston cylinder punching device includes an end support mechanism, a center frame 2 and an end clamping mechanism distributed in sequence along the axial direction of the piston cylinder, a punching mechanism arranged above the end support mechanism, a rotating mechanism arranged on one side of the end clamping mechanism and driving the end clamping machine and the piston cylinder to rotate synchronously, and a tightening structure arranged on one side of the end support mechanism and pressing the piston cylinder into place.

[0031] In this embodiment, the end support mechanism includes a reference sleeve 3 and a positioning pin 36. The inner wall of the reference sleeve 3 extends inward to form a positioning portion. The positioning portion is an annular structure. The positioning portion is positioned and matched with the end of the thickened portion to limit the axial position of the piston cylinder. The reference sleeve 3 is provided with a guide groove 31 surrounding the half circumference of the sleeve. The guide groove 31 penetrates the reference sleeve 3 along the wall thickness direction and its two ends are respectively arranged at the top and bottom of the reference sleeve 3. The positioning pin can penetrate the guide groove and be installed in the mounting hole formed after drilling and move along the guide groove 31 during the process of the piston cylinder rotating to change the drilling position. Specifically, the head of the positioning pin is placed outside the guide groove 31, the middle guide portion 361 thereof is matched with the guide groove 31 for sliding guidance, and the tail portion is inserted into the drilled mounting hole. The tail portion can also be set to be magnetic to prevent the positioning pin 36 from falling off, thereby improving the reliability of the device.

[0032] In this embodiment, rollers 21 are respectively installed at the ends of the support members of the central frame 2. The rollers 21 can abut against the surface of the piston cylinder to reduce the wear of the contact surface between the piston cylinder and the support member during its rotation.

[0033] In this embodiment, the end clamping mechanism is a three-jaw chuck 1, and the rotating mechanism is a motor, which is coupled to the chuck 1 via a reducer (the motor and the reducer are not shown in the figure).

[0034] In this embodiment, the punching mechanism is not shown in the figure, which is a prior art. A lifting mechanism can be used to drive the drilling motor to rise and fall, and a drill bit is installed at the end of the drilling motor.

[0035] In this embodiment, the clamping structure includes a linear drive unit and an elastic pressure head. The output end of the linear drive unit is connected to the elastic pressure head. The elastic pressure head elastically abuts against the positioning pin 36 and can press the positioning pin 36 against the end of the guide groove 31 under the action of the linear drive unit.

[0036] In this embodiment, the left and right sides of the reference sleeve 3 are fixedly connected to the support frame 4 through the support ears 32 and bolts respectively. The support frame 4 is a lifting structure and can adjust the installation height to adapt to piston cylinders of different sizes.

[0037] In this embodiment, the linear drive unit is a cylinder 5, and the elastic pressure head includes a push block 53, a connecting column 51 and a spring 52. The push block 53 is slidably connected to the connecting column 51, one end of the connecting column 51 is connected to a locking nut 54 for limiting the push block 53, and the other end is threadedly connected to the piston rod of the cylinder 5, and the two ends of the spring 52 are respectively against the push block 53 and the piston rod. The cross section of the push block 53 is a 7-shaped, and the upper end of the push block 53 conflicts with the head of the positioning pin 36. The structural setting of the elastic pressure head can achieve soft contact between the push plate and the pin to avoid deformation or even damage after the collision between the two.

[0038] In this embodiment, the reference sleeve 3 is provided with detachable rubber strips 34 on both sides of the bottom of the groove, and the rubber strips 34 extend into the guide groove 31 and can abut against the positioning pins 36. The setting of the rubber strips 34 can provide damping for the positioning pins 36 near the end of the guide groove 31, achieve deceleration, and further achieve soft contact between the push plate and the pins. In addition, the reference sleeve 3 is provided with assembly grooves 33 connected to the positioning grooves on both sides of the bottom of the groove, and the rubber strips 34 are fixed in the assembly grooves 33 by clamping plates 35 and bolts. The side wall of the rubber strips 34 facing away from the guide groove 31 is spaced from the side wall of the assembly groove 33, which can realize the removal and replacement of the rubber strips 34, which is very convenient.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A piston cylinder punching device, comprising an end support mechanism and an end clamping mechanism respectively arranged at both ends of the piston cylinder axial direction, a punching mechanism arranged above the end support mechanism, and a rotating mechanism for driving the piston cylinder to rotate, characterized in that: The end support mechanism includes a reference sleeve and a positioning pin. The inner side wall of the reference sleeve extends inward to form a positioning portion. The reference sleeve is provided with a guide groove surrounding a half circumference of the sleeve body. The guide groove passes through the reference sleeve and its two ends are respectively arranged at the top and bottom of the reference sleeve. The positioning pin can pass through the guide groove and be installed in the installation hole formed after drilling. The device also includes a tightening structure, which includes a linear drive unit and an elastic pressure head. The output end of the linear drive unit is connected to the elastic pressure head, which elastically abuts against the positioning pin and can press the positioning pin against the end of the guide groove under the action of the linear drive unit.

2. A piston cylinder punching device as claimed in claim 1, characterized in that: The left and right sides of the reference sleeve are fixedly connected to the support frame through support ears and bolts respectively.

3. A piston cylinder punching device as claimed in claim 1, characterized in that: The end clamping mechanism is a chuck, and the rotating mechanism is a motor, and the motor is in transmission cooperation with the chuck.

4. A piston cylinder punching device as claimed in claim 1, characterized in that: The linear drive unit is a cylinder, and the elastic pressure head includes a push block, a connecting column and a spring. The push block is slidably connected to the connecting column. One end of the connecting column is connected to a locking nut for limiting the push block, and the other end is threadedly connected to the piston rod of the cylinder. The two ends of the spring respectively abut against the push block and the piston rod.

5. A piston cylinder punching device as claimed in claim 4, characterized in that: The cross section of the push block is in a 7-shape, and the upper end of the push block abuts against the head of the positioning pin.

6. A piston cylinder punching device as claimed in claim 1, characterized in that: The device is provided with a center frame at the end support mechanism and the end clamping mechanism, and rollers are respectively installed at the ends of the support members of the center frame, and the rollers can abut against the surface of the piston cylinder body.

7. A piston cylinder punching device as claimed in claim 1, characterized in that: The reference sleeve is located at both sides of the bottom of the groove and is detachably mounted with rubber strips, which extend into the guide groove and can abut against the positioning pins.

8. A piston cylinder punching device as claimed in claim 7, characterized in that: The reference sleeve is located at both sides of the groove bottom and is provided with assembly grooves connected with the positioning groove. The rubber strip is fixed in the assembly groove by means of clamping plates and bolts. The side wall of the rubber strip away from the guide groove is spaced apart from the side wall of the assembly groove.

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