Boring and honing integrated machine tool

Abstract

The present invention discloses a boring and honing integrated machine tool, which relates to the technical field of boring and honing combined machine tools and is used for machining a connecting rod with a first through hole and a second through hole. The boring and honing integrated machine tool includes a machining turntable, on which a limiting device is arranged. The limiting device includes a pressing device for pressing the first end of the connecting rod. The positioning device includes a first positioning rod and a second positioning rod. When the connecting rod is placed on the machining platform of the machining turntable, the first positioning rod and the second positioning rod respectively extend into the first through hole and the second through hole to position the connecting rod. The first machining device is used for boring the first through hole and the second through hole. The second machining device is used for honing the first through hole and the second through hole. The third machining device is used for removing the flanging burrs. The fourth machining device is used for precision finishing the first through hole and the second through hole. On the basis of retaining the traditional boring machining, honing machining is added to realize boring and honing combined machining, improve the machining accuracy, and make the roundness and cylindricity of the first through hole and the second through hole meet the required requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of boring and honing combined machine tools, and particularly to a boring and honing integrated machine tool. Background Art

[0002] Boring is a method of internal machining by rotating and cutting a workpiece with a tool such as a drill bit. Boring is commonly used for machining parts with high precision requirements such as large holes, flat-bottom holes, and complex curved surfaces. Boring tools have the characteristics of multiple faces, multiple edges, and multiple teeth, and are suitable for machining straight holes and curved surfaces with large inclination angles, continuity, and short distances;

[0003] Honing is a process of finishing the inner surface of a workpiece using oilstones mounted on a honing head. Honing is usually carried out at a low speed. The oilstones on the honing head press against the inner wall of the workpiece hole to generate a certain contact area and pressure, and then the workpiece is ground during rotation and reciprocating motion to achieve the purpose of finishing;

[0004] When machining a connecting rod, since the connecting rod is a split and combined structure, usually only the boring process is used, making the roundness and cylindricity of the holes on the connecting rod unable to meet the precision requirements. Therefore, we have proposed a boring and honing integrated machine tool. Summary of the Invention

[0005] In view of the above defects or deficiencies in the prior art, it is desired to provide a boring and honing integrated machine tool.

[0006] The present invention provides a boring and honing integrated machine tool for machining a connecting rod. The two ends of the connecting rod are respectively a first end and a second end, and the first end and the second end respectively have a first through hole and a second through hole. The boring and honing integrated machine tool includes:

[0007] A processing turntable, on which a plurality of processing platforms are circumferentially arranged. At least two limiting devices are arranged on the processing platform for limiting at least two of the connecting rods. The limiting device includes a pressing assembly for pressing the first end;

[0008] A positioning device, which is movably arranged at the bottom of the processing platform. The positioning device includes a first positioning rod and a second positioning rod for respectively extending into the first through hole and the second through hole to position the connecting rod;

[0009] A first processing device for boring the first through hole and the second through hole;

[0010] A second processing device for honing the first through hole and the second through hole;

[0011] A third processing device for removing the flanging burrs generated during machining;

[0012] The fourth processing device is used for performing finish machining on the first through hole and the second through hole.

[0013] According to the technical solution provided by the present invention, the positioning device further includes a moving block, which is connected to an external driving mechanism and can reciprocate along a first direction. The top of the moving block is provided with the first positioning rod and the second positioning rod. The first positioning rod and the second positioning rod both extend along the first direction and can respectively move into the first through hole and the second through hole along the first direction with the moving block to limit the first through hole and the second through hole.

[0014] According to the technical solution provided by the present invention, the limiting device includes two first limiting columns and two second limiting columns for limiting the connecting rod. The first limiting columns are close to the first end; the pressing assembly includes two first pressing members and one second pressing member. The two first pressing members are respectively arranged corresponding to the two first limiting columns, and the first pressing members are provided with grooves for accommodating the tops of the first limiting columns. There is a first preset distance between the bottom of the second pressing member and the top of the second end.

[0015] According to the technical solution provided by the present invention, the first processing device includes a first working station and a second working station. The first working station and the second working station are both provided with a first processing part. The first processing part includes a first processing tool and a second processing tool that are coaxially and fixedly connected in the first direction. The first processing tool is fixedly arranged on the top of the second processing tool, and the diameter of the first processing tool is larger than that of the second processing tool. The first processing tool is used for boring the first through hole, and the second processing tool is used for boring the second through hole. The first working station is used for processing one of the connecting rods, and the second working station is used for processing the other connecting rod.

[0016] According to the technical solution provided by the present invention, the second processing device includes a third working station, a fourth working station and a fifth working station. At least two second processing parts are respectively arranged on the third working station, the fourth working station and the fifth working station corresponding to at least two connecting rods. The second processing part includes a third processing tool and a fourth processing tool. The third processing tool is used for honing the first through hole, and the fourth processing tool is used for honing the second through hole. The third working station is used for rough honing the first through hole and the second through hole. The fourth working station is used for semi-finish honing the first through hole and the second through hole. The fifth working station is used for finish honing the first through hole and the second through hole.

[0017] According to the technical solution provided by the present invention, the third processing device includes a sixth station, and at least two third processing parts are provided corresponding to at least two of the connecting rods on the sixth station. The third processing part includes a first brush and a second brush. The first brush is used to remove burrs from the first through hole, and the second brush is used to remove burrs from the second through hole.

[0018] According to the technical solution provided by the present invention, the fourth processing device includes a seventh station, and at least two fourth processing parts are provided corresponding to at least two of the connecting rods on the seventh station. The fourth processing part includes a fifth processing tool, and the fifth processing tool corresponds to the first through hole and is used to perform finish machining on the first through hole.

[0019] According to the technical solution provided by the present invention, the fourth processing device further includes an eighth station, and at least two fifth processing parts are provided corresponding to at least two of the connecting rods on the eighth station. The fifth processing part includes a sixth processing tool, and the sixth processing tool corresponds to the second through hole and is used to perform finish machining on the second through hole.

[0020] According to the technical solution provided by the present invention, a loading device is further included. The loading device includes a ninth station, and the positioning device is provided corresponding to the ninth station. The loading device further includes a conveying component for conveying the connecting rods to be processed. The conveying component has an input end, and at least two branches are provided on the conveying component. One end of the branch away from the input end is the output end. The loading device further includes a robotic arm for simultaneously placing the connecting rods conveyed to at least two of the output ends on the ninth station.

[0021] In summary, the technical solution of the present invention specifically discloses a boring and honing integrated machine tool for processing connecting rods. The two ends of the connecting rod are respectively a first end and a second end, and a first through hole and a second through hole are respectively opened on the first end and the second end. The boring and honing integrated machine tool includes a processing turntable, and a plurality of processing platforms are arranged on the processing turntable. A limiting device is arranged on the processing platform for limiting the connecting rod. The limiting device includes a pressing device for pressing the first end. It further includes a positioning device, which is movably arranged at the bottom of the processing platform and includes a first positioning rod and a second positioning rod. When the connecting rod is placed on the processing platform, the first positioning rod and the second positioning rod respectively extend into the first through hole and the second through hole to position the connecting rod. The first processing device is used to perform boring processing on the first through hole and the second through hole. The second processing device is used to perform honing processing on the first through hole and the second through hole. The third processing device is used to remove the flanging burrs generated during processing. The fourth processing device is used to perform finish processing on the first through hole and the second through hole.

[0022] This device is used for machining the first through-hole and the second through-hole on the connecting rod. On the basis of retaining the traditional boring machining, honing machining is added to achieve combined boring and honing machining. Compared with the traditional method that only uses boring machining, the machining accuracy is improved, and the roundness and cylindricity of the first through-hole and the second through-hole both meet the required standards. Description of the Drawings

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0024] Figure 1 It is a schematic structural diagram of a boring and honing integrated machine tool.

[0025] Figure 2 It is a schematic structural diagram of the boring and honing integrated machine tool from the second perspective.

[0026] Figure 3 It is a schematic structural diagram of the boring and honing integrated machine tool from the third perspective.

[0027] Figure 4 It is a top view of the boring and honing integrated machine tool.

[0028] Figure 5 It is Figure 1 The enlarged view of part A in

[0029] Figure 6 It is Figure 1 The enlarged view of part B in

[0030] Figure 7 It is Figure 1 The enlarged view of part C in

[0031] Figure 8 It is Figure 1 The enlarged view of part D in

[0032] Figure 9 It is Figure 2 The enlarged view of part E in

[0033] Figure 10 It is Figure 3 The enlarged view of part F in

[0034] Figure 11 It is a schematic structural diagram of the positioning device.

[0035] Figure 12 It is a schematic structural diagram of the robotic arm.

[0036] Figure 13 It is Figure 12 The enlarged view of part G in

[0037] Reference numerals in the figures: 1, connecting rod; 2, first through hole; 3, second through hole; 4, machining turntable; 5, first positioning rod; 6, second positioning rod; 7, moving block; 8, first limiting column; 9, second limiting column; 10, first pressing member; 11, second pressing member; 12, first working station; 13, second working station; 14, first machining tool; 15, second machining tool; 16, third working station; 17, fourth working station; 18, fifth working station; 19, third machining tool; 20, fourth machining tool; 21, sixth working station; 22, first brush; 23, second brush; 24, seventh working station; 25, fifth machining tool; 26, eighth working station; 27, sixth machining tool; 28, ninth working station; 29, branch; 30, robotic arm; 31, conveyor belt; 32, supporting block. Detailed implementation manners

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0039] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0040] Please refer to Figures 1 to 5 As shown, a boring and honing integrated machine tool is used for machining the connecting rod 1. The connecting rod 1 is a split combined structure and is connected by bolts. The two ends of the connecting rod 1 are respectively a first end and a second end. Among them, the projected area of the first end in the first direction is larger than the projected area of the second end in the first direction. The first end has a first through hole 2, the second end has a second through hole 3, and a third through hole is further provided inside the connecting rod 1. The third through hole extends along the length direction of the connecting rod 1 and communicates with the first through hole 2 and the second through hole 3 at both ends respectively. Since the connecting rod 1 is a split combined structure, after the connecting rod 1 is assembled, its first end can have the first through hole 2. Therefore, there is a structural connection gap on the inner wall of the first through hole 2, and burrs will appear here after boring processing. At the same time, since the third through hole communicates with the first through hole 2 and the second through hole 3 at both ends respectively, burrs will also appear at the connection points; the first direction is Figure 1 the direction indicated by the arrow in

[0041] The boring and honing integrated machine tool includes a first working station 12, a second working station 13, a third working station 16, a fourth working station 17, a fifth working station 18, a sixth working station 21, a seventh working station 24, an eighth working station 26, and a ninth working station 28, which are respectively used for boring, honing, burr removal machining, and finishing machining of the first through hole 2 and the second through hole 3;

[0042] Further, the boring and honing integrated machine tool includes a machining turntable 4, on which nine machining platforms are circumferentially and evenly arranged, corresponding to the first station 12, the second station 13, the third station 16, the fourth station 17, the fifth station 18, the sixth station 21, the seventh station 24, the eighth station 26, and the ninth station 28 respectively. Thus, the first station 12, the second station 13, the third station 16, the fourth station 17, the fifth station 18, the sixth station 21, the seventh station 24, the eighth station 26, and the ninth station 28 are arranged in a circumferential direction on the machining turntable 4;

[0043] Further, the boring and honing integrated machine tool includes a feeding device for feeding the connecting rod 1;

[0044] Specifically, the feeding device includes a conveying assembly. The conveying assembly includes a conveyor belt 31 for conveying the connecting rod 1 to be machined. The conveyor belt 31 has an input end, and two branches 29 are arranged on the conveyor belt 31. The end of the branch 29 far from the input end is the output end. Thus, by placing a plurality of connecting rods 1 on the conveyor belt 31 from the input end, the plurality of connecting rods 1 are split by the two branches 29 and can be respectively conveyed to the two output ends;

[0045] Further, the feeding device further includes a robotic arm 30. The robotic arm 30 has two jaws. During feeding, the two jaws respectively extend into the first through hole 2 and the second through hole 3, thereby realizing the clamping of the connecting rod 1, facilitating the feeding of the connecting rod 1, and since the conveyor belt 31 has two branches 29, the robotic arm 30 can simultaneously feed two connecting rods 1, improving the machining efficiency of the connecting rod 1.

[0046] As Figures 11 to 13 shown, the feeding device includes the ninth station 28. Thus, the robotic arm 30 places two connecting rods 1 on the machining platform corresponding to the ninth station 28;

[0047] Further, it further includes a positioning device. The positioning device is movably arranged at the bottom of the machining platform corresponding to the ninth station 28. It is connected to an external driving mechanism and can reciprocate along the first direction;

[0048] Further, the positioning device further includes a moving block 7, which is connected to the external driving mechanism and can reciprocate along the first direction driven by the external driving mechanism. A first positioning rod 5 and a second positioning rod 6 are arranged on the top of the moving block 7. Both the first positioning rod 5 and the second positioning rod 6 extend along the first direction. Among them, the first positioning rod 5 corresponds to the first through hole 2, and the second positioning rod 6 corresponds to the second through hole 3;

[0049] It should be noted that there are two first positioning rods 5 and two second positioning rods 6 respectively, and they are respectively arranged corresponding to the two connecting rods 1. The first positioning rod 5 and the second positioning rod 6 can be driven by the moving block 7 to move along the first direction and extend into the first through hole 2 and the second through hole 3 respectively, so as to realize the positioning of the connecting rod 1.

[0050] There are two limiting devices arranged on the processing platform for limiting the two connecting rods 1;

[0051] Specifically, as Figure 5 shown, the limiting device includes a supporting block 32 which is fixedly arranged on the top of the processing platform. A first processing through hole and a second processing through hole are respectively formed in the supporting block 32 corresponding to the first through hole 2 and the second through hole 3 along the first direction and penetrate through;

[0052] Furthermore, the limiting device further includes two first limiting columns 8 and two second limiting columns 9, which are both fixedly arranged on the top of the supporting block 32 and both extend along the first direction. Among them, the first limiting column 8 is close to the first end, and the second limiting column 9 is close to the second end. The first limiting column 8 and the second limiting column 9 are both located outside the connecting rod 1, and the two first limiting columns 8 are symmetrically arranged on both sides of the connecting rod 1, and the two second limiting columns 9 are symmetrically arranged on both sides of the connecting rod 1. The first limiting column 8 and the second limiting column 9 are used to limit the connecting rod 1;

[0053] Furthermore, the length of the first limiting column 8 is greater than that of the second limiting column 9;

[0054] Furthermore, the limiting device further includes a pressing component. The pressing component includes two first pressing members 10 for pressing the first end. The two first pressing members 10 are symmetrically arranged on both sides of the first end. The first pressing member 10 has a first pressing end, and a groove is arranged at the bottom of the first pressing end for accommodating the top of the first limiting column 8; the pressing component further includes a second pressing member 11 which has a second pressing end and is arranged corresponding to the second end;

[0055] Thus, during feeding, the connecting rod 1 is grabbed by the robotic arm 30 and placed on the top of the supporting block 32. The connecting rod 1 is limited by the first limiting column 8 and the second limiting column 9, positioned by the first positioning rod 5 and the second positioning rod 6, and pressed by the pressing component, so as to realize the positioning and placement of the connecting rod 1 and limit the connecting rod 1 to prevent the connecting rod 1 from displacing during subsequent processing;

[0056] It should be noted that when the connecting rod 1 is pressed by the pressing component, the first pressing end of the first pressing member 10 abuts against the top of the first end, and the top of the first limiting column 8 extends into the groove, so as to limit the first pressing end at the same time and prevent the first pressing end from moving excessively and covering the first through hole 2, which affects subsequent processing;

[0057] Further, there is a first preset distance between the bottom of the second pressing end and the top of the second end, and there is also a first preset distance between the bottom of the second end and the top of the supporting block 32. The first preset distance can be selected as 15 filaments. The first preset distance is the maximum value of the difference between the thickness of the first end and the thickness of the second end. Thus, the pressing assembly presses and positions the first end and makes auxiliary positioning for the second end, avoiding the situation that the processed product is distorted due to the inconsistent heights of different surfaces of the blank product.

[0058] Optionally, the first pressing member 10 and the second pressing member 11 can be selected as pressing oil cylinders. The first pressing member 10 and the second pressing member 11 can make the first pressing end and the second pressing end move up and down and rotate, so as to realize the pressing of the connecting rod 1.

[0059] The first processing device is used for boring the first through hole 2 and the second through hole 3.

[0060] Specifically, as Figure 9 shown, the first processing device includes a first station 12. A first processing part is arranged on the first station 12. The first processing part includes a first processing tool 14 and a second processing tool 15 that are coaxially and fixedly connected in the first direction. The first processing tool 14 is fixedly arranged on the top of the second processing tool 15, and the diameter of the first processing tool 14 is larger than that of the second processing tool 15. The first processing tool 14 is used for boring the first through hole 2, and the second processing tool 15 is used for boring the second through hole 3.

[0061] Further, the first processing device further includes a second station 13. A first processing part is arranged on the second station 13. The first station 12 is used for processing one of the connecting rods 1, and the second station 13 is used for processing the other connecting rod 1.

[0062] Further, the first processing part further includes a driving member for driving the first processing tool 14 and the second processing tool 15 to move along the length direction of the connecting rod 1, so as to adjust the positions of the first processing tool 14 and the second processing tool 15 and realize the processing of the first through hole 2 and the second through hole 3.

[0063] Thus, after feeding and positioning the connecting rod 1, the positioning device is moved in the first direction, the first positioning rod 5 and the second positioning rod 6 are respectively disengaged from the first through hole 2 and the second through hole 3, the processing turntable 4 rotates, and the processing platform clamping the connecting rod 1 is rotated to the position corresponding to the first working station 12. The first processing tool 14 and the second processing tool 15 are rotated by the driving member, and the first processing tool 14 and the second processing tool 15 are driven to move downward in the first direction, so that the second processing tool 15 penetrates through the first through hole 2, so that the second processing tool 15 extends into the first through hole 2, thereby realizing the boring processing of the first through hole 2. Then, the first processing tool 14 and the second processing tool 15 are moved upward. Then, the first processing part moves along the length direction of the connecting rod 1, so that the second processing tool 15 moves to directly above the second through hole 3, and then the second processing tool 15 extends into the second through hole 3 in the first direction to perform boring processing on the second through hole 3;

[0064] After that, the processing turntable 4 rotates, and the processing platform clamping the connecting rod 1 is rotated to the position corresponding to the second working station 13. The first processing part at the second working station 13 respectively performs boring processing on the first through hole 2 and the second through hole 3 of another connecting rod 1;

[0065] By using the first processing tool 14 and the second processing tool 15 fixedly connected coaxially, and respectively processing the two connecting rods 1 at the first working station 12 and the second working station 13, the compound error caused by the rotation change of the processing turntable 4 and the positioning and pressing of the two connecting rods 1 can be avoided, so that only one workpiece is processed at one working station, and the accuracy and stability of the traditional boring are retained;

[0066] It should be noted that the first processing part further includes an electric spindle, and the first processing tool 14 and the second processing tool 15 are driven by the electric spindle to rotate at high speed, so that the first processing tool 14 and the second processing tool 15 have high rotational stability.

[0067] The second processing device is used for honing the first through hole 2 and the second through hole 3;

[0068] Specifically, as Figure 6 shown, the second processing device includes a third working station 16, a fourth working station 17 and a fifth working station 18. Two second processing parts are respectively arranged on the third working station 16, the fourth working station 17 and the fifth working station 18 corresponding to the two connecting rods 1;

[0069] Furthermore, the second processing part includes a third processing tool 19 and a fourth processing tool 20. The third processing tool 19 is used for honing the first through hole 2, and the fourth processing tool 20 is used for honing the second through hole 3;

[0070] Further, there is a second preset distance between the third processing tool 19 and the fourth processing tool 20. Since the length of the connecting rod 1 is fixed, if the axial distance between the third processing tool 19 and the fourth processing tool 20 is too small, they cannot be installed. Therefore, the second preset distance is greater than the length of the connecting rod 1;

[0071] Further, a relief groove is formed through one side of the processing platform away from the second end at the first end, for the third processing tool 19 to pass through when the fourth processing tool 20 processes the second through hole 3, to avoid collision and interference; the second processing unit further includes a driving member for driving the third processing tool 19 and the fourth processing tool 20 to move along the length direction of the connecting rod 1;

[0072] Further, the third station 16 is used for rough honing of the first through hole 2 and the second through hole 3, the fourth station 17 is used for semi-finish honing of the first through hole 2 and the second through hole 3, and the fifth station 18 is used for finish honing of the first through hole 2 and the second through hole 3;

[0073] The second processing unit further includes an electric spindle, which drives the third processing tool 19 and the fourth processing tool 20 to rotate at high speed through the electric spindle, so that the first processing tool 14 and the second processing tool 15 have high rotational stability;

[0074] Thus, when the boring of the first through hole 2 and the second through hole 3 of both connecting rods 1 is completed, the processing turntable 4 rotates to drive the processing platform clamping the connecting rod 1 to pass through the third station 16, the fourth station 17 and the fifth station 18 in sequence, and the rough honing, semi-finish honing and finish honing of the first through hole 2 and the second through hole 3 are completed in sequence;

[0075] During processing, first rotate the third processing tool 19 to extend the third processing tool 19 into the first through hole 2, while the fourth processing tool 20 is located outside the processing platform at this time and does not contact the connecting rod 1 to avoid interference. After the processing of the first through hole 2 is completed, move the third processing tool 19 upward along the first direction to disengage from the first through hole 2, and then move the second processing unit along the length direction of the connecting rod 1 through the driving member to make the fourth processing tool 20 located directly above the second through hole 3. Subsequently, move the fourth processing tool 20 downward along the first direction into the second through hole 3 to process the second through hole 3. At this time, the third processing tool 19 is located in the relief groove to avoid interference.

[0076] A third processing device, which is used to remove the flanging burrs generated during processing;

[0077] Specifically, as Figure 7As shown, the third processing device includes a sixth station 21. Two third processing parts are provided on the sixth station 21 corresponding to two connecting rods 1. The third processing part includes a first brush 22 and a second brush 23. The first brush 22 is used to remove burrs from the first through hole 2, and the second brush 23 is used to remove burrs from the second through hole 3;

[0078] Optionally, the first brush 22 and the second brush 23 can be made of nylon;

[0079] It should be noted that the third processing part also includes an electric spindle. The first brush 22 and the second brush 23 are driven by the electric spindle to rotate at high speed, so that the first brush 22 and the second brush 23 have high rotational stability; the third processing part also includes a driving part for driving the first brush 22 and the second brush 23 to move along the length direction of the connecting rod 1;

[0080] Thus, after the honing process of the first through hole 2 and the second through hole 3 is completed, the processing turntable 4 rotates to drive the processing platform clamping the connecting rod 1 to rotate to the position corresponding to the sixth station 21. The first brush 22 rotates and extends into the first through hole 2 to remove the burrs of the first through hole 2. At this time, the second brush 23 is located outside the processing platform and does not contact the connecting rod 1 to avoid interference. Then, the first brush 22 moves upward, and the driving part drives the first brush 22 and the second brush 23 to move, so that the second brush 23 is directly above the second through hole 3. Subsequently, the second brush 23 rotates and moves downward into the second through hole 3 to remove the burrs of the second through hole 3.

[0081] The fourth processing device is used for fine processing of the first through hole 2 and the second through hole 3;

[0082] Specifically, as Figure 8 and Figure 10 shown, the fourth processing device includes a seventh station 24. Two fourth processing parts are provided on the seventh station 24 corresponding to two connecting rods 1. The fourth processing part includes a fifth processing tool 25. The fifth processing tool 25 is provided corresponding to the first through hole 2 and is used for fine processing of the first through hole 2;

[0083] Furthermore, the fourth processing part also includes an electric spindle. The fifth processing tool 25 is driven by the electric spindle to rotate at high speed, so that the fifth processing tool 25 has high rotational stability;

[0084] Furthermore, the fourth processing device also includes an eighth station 26. Two fifth processing parts are provided on the eighth station 26 corresponding to two connecting rods 1. The fifth processing part includes a sixth processing tool 27. The sixth processing tool 27 is provided corresponding to the second through hole 3 and is used for fine processing of the second through hole 3;

[0085] Furthermore, the fifth processing unit further includes an electric main shaft which drives the sixth processing tool 27 to rotate at a high speed, enabling the sixth processing tool 27 to have high rotational stability.

[0086] Thus, after the burrs of the first through-hole 2 and the second through-hole 3 are removed, the processing turntable 4 rotates to make the processing platform clamping the connecting rod 1 rotate to the position corresponding to the seventh station 24. The fifth processing tool 25 rotates at a high speed driven by the electric main shaft. Then, the fifth processing tool 25 extends into the first through-hole 2 to perform fine machining on the first through-hole 2. After machining, the fifth processing tool 25 returns to its original position. The processing turntable 4 rotates to make the processing platform clamping the connecting rod 1 rotate to the position corresponding to the eighth station 26. The sixth processing tool 27 rotates at a high speed driven by the electric main shaft. Then, the sixth processing tool 27 extends into the second through-hole 3 to perform fine machining on the second through-hole 3.

[0087] After the fine machining of the first through-hole 2 and the second through-hole 3 is completed, the processing turntable 4 rotates to make the processing platform clamping the connecting rod 1 rotate to the position corresponding to the ninth station 28. The pressing limit of the first pressing member 10 and the second pressing member 11 on the connecting rod 1 is released, and the connecting rod 1 is unloaded by the robotic arm 30.

[0088] Working principle: During use, the feeding device is used to feed the connecting rod 1 to be processed. A number of connecting rods 1 are divided into two conveying paths by the conveying component, and then the robotic arm 30 clamps two connecting rods 1 to achieve the feeding of the connecting rod 1. The first positioning rod 5 and the second positioning rod 6 are used to position the first through-hole 2 and the second through-hole 3. The first limiting post 8 and the second limiting post 9 are used to limit the connecting rod 1. The first pressing member 10 and the second pressing member 11 press the connecting rod 1. Then, the processing turntable 4 rotates to make the connecting rod 1 pass through the first station 12, the second station 13, the third station 16, the fourth station 17, the fifth station 18, the sixth station 21, the seventh station 24, the eighth station 26 and the ninth station 28 in sequence, and perform boring machining, rough honing machining, semi-precision honing machining, precision honing machining, burr removal machining and fine machining on the first through-hole 2 and the second through-hole 3 in sequence. On the basis of retaining the traditional boring machining, honing machining is added to realize boring-honing combined machining, improve the machining accuracy, and make the roundness and cylindricity of the first through-hole 2 and the second through-hole 3 meet the required requirements.

[0089] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present invention that have similar functions.

Claims

1. A boring and honing integrated machine tool is used for processing a connecting rod (1). The two ends of the connecting rod (1) are respectively a first end and a second end. The first end and the second end respectively have a first through hole (2) and a second through hole (3). The connecting rod (1) is of a split and combined structure. There is a structural connection gap on the inner wall of the first through hole (2). It is characterized in that, The boring and honing integrated machine tool includes: A machining turntable (4) on which a plurality of machining platforms are circumferentially arranged. At least two limiting devices are provided on the machining platform for limiting at least two of the connecting rods (1). The limiting device includes a pressing assembly for pressing the first end. A positioning device movably arranged at the bottom of the machining platform. The positioning device includes a first positioning rod (5) and a second positioning rod (6) for extending into the first through hole (2) and the second through hole (3) respectively to position the connecting rod (1). A first machining device for boring the first through hole (2) and the second through hole (3). A second machining device for honing the first through hole (2) and the second through hole (3). A third machining device for removing the flanging burrs generated during machining. A fourth machining device for finishing the first through hole (2) and the second through hole (3). The positioning device further includes a moving block (7) connected to an external driving mechanism and capable of reciprocating along a first direction. The first positioning rod (5) and the second positioning rod (6) are arranged on the top of the moving block (7). The first positioning rod (5) and the second positioning rod (6) both extend along the first direction and can move into the first through hole (2) and the second through hole (3) respectively along the first direction with the moving block (7) to limit the first through hole (2) and the second through hole (3). The limiting device includes two first limiting columns (8) and two second limiting columns (9) for limiting the connecting rod (1). The first limiting columns (8) are close to the first end. The pressing assembly includes two first pressing members (10) and one second pressing member (11). The two first pressing members (10) are respectively arranged corresponding to the two first limiting columns (8), and the first pressing member (10) has a first pressing end on which a groove is provided for accommodating the top end of the first limiting column (8). There is a first preset distance between the bottom of the second pressing member (11) and the top of the second end. The limiting device further includes a supporting block (32) for supporting the connecting rod (1). There is a first preset distance between the bottom of the second end of the connecting rod (1) and the top of the supporting block (32). When the connecting rod (1) is pressed by the pressing assembly, the first pressing end of the first pressing member (10) abuts against the top of the first end, and the top of the first limiting column (8) extends into the groove, simultaneously limiting the first pressing end to prevent the first pressing end from moving excessively and covering the first through hole (2), which affects subsequent machining.

2. The boring and honing integrated machine tool according to claim 1, wherein, The first processing device includes a first working station (12) and a second working station (13). First processing parts are provided on both the first working station (12) and the second working station (13). The first processing part includes a first processing tool (14) and a second processing tool (15) that are coaxially and fixedly connected in the first direction. The first processing tool (14) is fixedly arranged on the top of the second processing tool (15), and the diameter of the first processing tool (14) is larger than that of the second processing tool (15). The first processing tool (14) is used for boring the first through hole (2), and the second processing tool (15) is used for boring the second through hole (3). The first working station (12) is used for processing one of the connecting rods (1), and the second working station (13) is used for processing the other connecting rod (1).

3. The boring and honing integrated machine tool according to claim 1, wherein The second processing device includes a third working station (16), a fourth working station (17), and a fifth working station (18). At least two second processing parts are respectively provided on the third working station (16), the fourth working station (17), and the fifth working station (18) corresponding to at least two of the connecting rods (1). The second processing part includes a third processing tool (19) and a fourth processing tool (20). The third processing tool (19) is used for honing the first through hole (2), and the fourth processing tool (20) is used for honing the second through hole (3). The third working station (16) is used for rough honing the first through hole (2) and the second through hole (3), the fourth working station (17) is used for semi-finish honing the first through hole (2) and the second through hole (3), and the fifth working station (18) is used for finish honing the first through hole (2) and the second through hole (3).

4. The boring and honing integrated machine tool according to claim 1, characterized in that, The third processing device includes a sixth working station (21). At least two third processing parts are provided on the sixth working station (21) corresponding to at least two of the connecting rods (1). The third processing part includes a first brush (22) and a second brush (23). The first brush (22) is used for removing burrs from the first through hole (2), and the second brush (23) is used for removing burrs from the second through hole (3).

5. The boring and honing integrated machine tool according to claim 1, wherein, The fourth processing device includes a seventh working station (24). At least two fourth processing parts are provided on the seventh working station (24) corresponding to at least two of the connecting rods (1). The fourth processing part includes a fifth processing tool (25). The fifth processing tool (25) corresponds to the first through hole (2) and is used for precision machining of the first through hole (2).

6. The boring and honing integrated machine tool according to claim 1, wherein, The fourth processing device further includes an eighth working station (26). At least two fifth processing parts are provided on the eighth working station (26) corresponding to at least two of the connecting rods (1). The fifth processing part includes a sixth processing tool (27). The sixth processing tool (27) corresponds to the second through hole (3) and is used for precision machining of the second through hole (3).

7. The boring and honing integrated machine tool according to claim 1, characterized in that, It further includes a loading device. The loading device includes a ninth station (28). The positioning device is arranged corresponding to the ninth station (28). The loading device further includes a conveying assembly for conveying the connecting rod (1) to be processed. The conveying assembly has an input end. At least two branches (29) are arranged on the conveying assembly. One end of the branch (29) far from the input end is an output end. The loading device further includes a robotic arm (30) for simultaneously placing the connecting rods (1) conveyed to at least two output ends on the ninth station (28).

Images