Drilling device for connecting rod machining

Abstract

The invention relates to a drilling device for connecting rod machining, and belongs to the technical field of connecting rod drilling equipment. The drilling device comprises a machine frame, a drilling mechanism and a positioning mechanism, wherein the drilling mechanism and the positioning mechanism are installed on the machine frame. The positioning mechanism comprises a large-head positioning assembly and a small-head positioning assembly which are sequentially arranged in the left-right direction. The large head positioning assembly comprises a first support fixedly installed on the rack, a first rotating shaft rotationally installed on the first support around a rotating axis extending in the vertical direction, and a plurality of first positioning rods which are installed on the first support, are in transmission fit with the first rotating shaft and are evenly distributed on the outer side of the first rotating shaft. The small head positioning assembly comprises a second support movably installed on the rack left and right, a second rotating shaft rotationally installed on the second support around a rotating axis extending in the vertical direction, and a plurality of second positioning rods which are installed on the second support, are in transmission fit with the second rotating shaft and are evenly distributed on the outer side of the second rotating shaft. The connecting rod clamping and positioning device can clamp and position various connecting rods of different specifications, and is wider in application range.

Description

Technical Field

[0001] The invention relates to the technical field of connecting rod drilling equipment, and in particular to a drilling device for connecting rod processing. Background Art

[0002] The engine connecting rod is a key component in the internal combustion engine. It connects the piston and the crankshaft and converts the reciprocating motion of the piston into the rotational motion of the crankshaft, thereby realizing the power output of the engine.

[0003] The connecting rod includes a big head end, a small head end and a rod body connected between the big head end and the small head end. The big head end of the connecting rod is usually composed of two parts, and the two parts are provided with corresponding bolt holes. The bolt holes on the big head end of the connecting rod are the key parts to ensure the reliable connection between the connecting rod and the crankshaft. These bolt holes are used to install high-strength bolts to firmly fix the big head end of the connecting rod on the crank pin of the crankshaft to withstand the huge pressure and stress generated when the engine is running.

[0004] When processing the bolt hole on the big end of the connecting rod, the connecting rod needs to be positioned first, and then a drill is used to drill the hole. For example, the patent with authorization announcement number CN217701429U discloses a bolt hole drilling fixture for an engine connecting rod, which comprises an upper die, a lower die and a fixed seat, a hinge for connection is arranged between the upper die and the lower die, and the upper die and the lower die are kept in rotation connection by the hinge, the left and right sides of the upper die are provided with inwardly recessed grooves, and a plurality of penetrating fixing bolts are matched in the grooves, and positioning holes are arranged at corresponding positions of the lower die, and the fixing bolts are inserted into the positioning holes and connected with the positioning hole threads, and mounting grooves are arranged in the middle parts of the upper die and the lower die, and a raised limiting piece is arranged in the mounting groove of the upper die, a contact ring is arranged on the upper die, and a cylindrical protrusion is arranged on the contact ring, and a limiting ring is arranged in the mounting groove of the lower die, and the lower head of the connecting rod is sleeved on the outer periphery of the limiting ring, and a clamping groove is arranged on the upper die and the lower die, and a raised positioning piece is arranged on the fixed seat, and the positioning piece is clamped in the clamping groove.

[0005] The clamp can clamp the connecting rod before drilling the connecting rod. However, the clamp achieves the positioning of the connecting rod by sleeved the small head end of the connecting rod on the outside of the limit ring and placing the rod body in the mounting groove. However, since the size of the limit ring and the mounting groove cannot be adjusted, the clamp can only clamp and position connecting rods of the same specification, which results in a limited scope of application of the clamp and is unable to effectively clamp and fix connecting rods of various specifications and sizes. Summary of the invention

[0006] The present invention provides a drilling device for connecting rod processing, so as to solve the technical problem that in the prior art, during the connecting rod drilling process, the clamping device used for clamping and positioning the connecting rod has a limited application range and cannot clamp and position connecting rods of various specifications.

[0007] In order to solve the above problems, the present invention provides a connecting rod processing drilling device adopting the following technical solutions: A drilling device for connecting rod processing, comprising a frame and a drilling mechanism and a positioning mechanism installed on the frame, wherein the positioning mechanism comprises a large head positioning component and a small head positioning component arranged in sequence in the left and right directions; The big head positioning assembly includes a support 1 fixedly mounted on the frame, a rotating shaft 1 rotatably mounted on the support 1 around a rotating axis extending vertically, and a plurality of positioning rods 1 mounted on the support 1 and evenly distributed on the outside of the rotating shaft 1, the rotating shaft 1 and the plurality of positioning rods 1 are used to be arranged in the inner ring of the big head end of the connecting rod, the rotating shaft 1 is in transmission connection with the plurality of positioning rods 1, and when the rotating shaft 1 rotates, the plurality of positioning rods 1 can be driven to move away from each other, so that the plurality of positioning rods 1 are pressed against the inner hole wall of the big head end of the connecting rod; The small head positioning assembly includes a support 2 mounted on the frame for left and right movement, a rotating shaft 2 mounted on the support 2 and rotatably mounted around a vertically extending rotating axis, and a plurality of positioning rods 2 mounted on the support 2 and evenly distributed on the outside of the rotating shaft 2. The rotating shaft 2 and the plurality of positioning rods 2 are used to be arranged in the inner ring of the small head end of the connecting rod. The rotating shaft 2 is connected to the plurality of positioning rods 2 in transmission. When the rotating shaft 2 rotates, it can drive the plurality of positioning rods 2 to move away from each other so that the plurality of positioning rods 2 are pressed against the inner hole wall of the small head end of the connecting rod.

[0008] By adopting the above technical scheme, the big head positioning assembly positions the big head end of the connecting rod, and the small head positioning assembly positions the small head end of the connecting rod. When the rotating shaft 1 in the big head positioning assembly rotates, it can drive multiple positioning rods 1 away from each other, that is, the maximum external dimensions of multiple positioning rods 1 can be changed, and connecting rods of various specifications with different big head end sizes can be positioned; when the rotating shaft 2 in the small head positioning assembly rotates, it can drive multiple positioning rods 2 away from each other, that is, the maximum external dimensions of multiple positioning rods 2 can be changed, and connecting rods of various specifications with different small head end sizes can be positioned. The support 2 is movably installed on the frame left and right, so that the distance between the big head positioning assembly and the small head positioning assembly can be adjusted, and connecting rods of various specifications with different rod length sizes can be positioned. The present invention can clamp and position connecting rods of various different specifications, and has a wider range of applications.

[0009] Furthermore, a plurality of vertically extending support shafts are fixedly provided on the support seat, and the plurality of support shafts are evenly distributed on the outside of the rotating shaft. A strip hole is provided on the positioning rod, which extends along the length of the rod and passes vertically through the rod. Each positioning rod is hinged at one end on the rotating shaft and is mounted on the outside of the corresponding support shaft through the strip hole.

[0010] By adopting the above technical solution, when the rotating shaft rotates, it drives the positioning rod to swing around the supporting shaft. During the swinging of the positioning rod, the distance between the outer end of the positioning rod and the rotating shaft changes, thereby changing the maximum external dimensions of the multiple positioning rods, so that the multiple positioning rods can be pressed against the inner wall of the large head end of different sizes. The structure is simple, stepless adjustment can be achieved, the application range is wider, and the positioning is more precise.

[0011] Furthermore, a plurality of vertically extending support shafts are fixedly provided on the support seat 2, and the plurality of support shafts are evenly distributed on the outside of the rotating shaft 2. The positioning rod 2 is provided with two strip holes extending along the length of the rod and vertically penetrating therethrough. Each positioning rod 2 is hinged at one end on the rotating shaft 2 and is mounted on the outside of the corresponding support shaft 2 through the two strip holes.

[0012] By adopting the above technical solution, when the rotating shaft 2 rotates, it drives the positioning rod 2 to swing around the supporting shaft 2. During the swinging of the positioning rod 2, the distance between the outer end of the positioning rod 2 and the rotating shaft 2 changes, thereby changing the maximum external dimension of the multiple positioning rods 2, so that the multiple positioning rods 2 can be pressed against the inner wall of the small head end of different sizes. The structure is simple, stepless adjustment can be achieved, the application range is wider, and the positioning is more precise.

[0013] Furthermore, a vertically extending spiral through hole is provided in the rotating shaft, and a rotating drive assembly is also provided on the frame. The rotating drive assembly includes a transmission rod that can move up and down. The transmission rod is coaxial with the spiral through hole and is located above the spiral through hole. The transmission rod can move downward and be inserted into the spiral through hole to cooperate with the spiral transmission of the rotating shaft, thereby driving the rotating shaft to rotate.

[0014] By adopting the above technical solution, when the transmission rod moves downward, it can be inserted into the spiral through hole and cooperate with the spiral transmission of the rotating shaft to drive the rotating shaft to rotate. The method of driving the rotating shaft to rotate is simple, the transmission structure is simple, easy to arrange, and the spatial layout is more reasonable.

[0015] Furthermore, a second vertically extending spiral through hole is provided in the second rotating shaft, and a second rotating drive component that can move left and right is also provided on the frame. The second rotating drive component includes a second transmission rod that can move up and down. The second transmission rod is coaxial with the second spiral through hole and is located above the second spiral through hole. The second transmission rod can move downward and be inserted into the second spiral through hole to cooperate with the spiral transmission of the second rotating shaft, thereby driving the second rotating shaft to rotate.

[0016] By adopting the above technical solution, when the transmission rod 2 moves downward, it can be inserted into the spiral through hole 2 and cooperate with the spiral transmission of the rotating shaft 2 to drive the rotating shaft 2 to rotate. The method of driving the rotating shaft 2 to rotate is simple, the transmission structure is simple, and the layout is convenient, and the spatial layout is more reasonable. The rotating drive component 2 can move left and right, which is convenient for adjusting the rotating drive component 2 to a position corresponding to the spiral through hole 2.

[0017] Furthermore, the rotation drive assembly 2 is connected to the support 2 and is relatively fixed in position with respect to the support 2 in the left-right direction.

[0018] By adopting the above technical solution, the positions of the rotating drive component 2 and the support 2 in the left and right directions are relatively fixed, and the transmission rod 2 in the rotating drive component 2 always remains coaxial with the spiral through hole 2. There is no need to adjust the position of the rotating drive component 2 separately after the position of the support 2 changes. It is more convenient to use and has higher positioning efficiency.

[0019] Furthermore, a belt assembly is connected between support one and support two, and the belt assembly includes a main support roller one, a main support roller two, an auxiliary support roller one and an endless belt, each support roller extends forward and backward, and the main support roller one and the main support roller two are spaced from left to right, the axis position of the main support roller one is relatively fixed with support one, the axis position of the main support roller two is relatively fixed with support two, the auxiliary support roller one is located below between the main support roller one and the main support roller two, and the auxiliary support roller one is elastically slidably installed on the frame up and down, and the endless belt is sleeved on the outside of the main support roller one, the main support roller two and the auxiliary support roller one, and the top surface of the part of the endless belt located between the main support roller one and the main support roller two is flush with the top surfaces of the support one and the support two, and the left and right ends of the endless belt are respectively in contact with the support one and the support two, and the frame is also provided with two baffles, which are respectively arranged on the front and rear sides of the endless belt and cover the area between the support one and the support two and are in contact with the endless belt.

[0020] The belt is moved upward by the belt drive mechanism, and the belt drive mechanism is moved upward by the belt drive mechanism, so that the belt drive mechanism can be moved upward by the belt drive mechanism, and the belt drive mechanism can be moved upward by the belt drive mechanism, so that the belt drive mechanism can be moved upward by the belt drive mechanism, and the belt drive mechanism can be moved upward by the belt drive mechanism, so that the belt drive mechanism can be moved upward by the belt drive mechanism, and the belt drive mechanism can be moved upward by the belt drive mechanism,

[0021] An annular belt is arranged between support one and support two to block the space between support one and support two. Compared with using a telescopic plate connected between the tops of support one and support two to block the space between support one and support two, the annular belt can be smoothly expanded or retracted between support one and support two, and the top surface of the annular belt can be kept flush with the top surfaces of support one and support two. The telescopic plate is usually formed by plugging and matching multiple plates, and a step is formed between two adjacent plates. This structure results in the top surface of the telescopic plate being unable to be completely flush with the top surfaces of support one and support two. In this way, if metal debris generated by drilling falls on the step, it is easy to get stuck on the step and difficult to clean. In severe cases, it will also affect the normal extension and retraction of the telescopic plate.

[0022] Furthermore, at least two auxiliary support rollers are provided, and the auxiliary support rollers are spaced apart from each other on the left and right. The belt assembly also includes auxiliary support rollers 2 extending forward and backward. An auxiliary support roller 2 is provided between each two adjacent auxiliary support rollers. The auxiliary support rollers 2 are elastically slidably installed on the frame up and down. The auxiliary support rollers 2 press the part of the annular belt located between the two adjacent auxiliary support rollers to the top of the auxiliary support rollers 1 from bottom to top.

[0023] By adopting the above technical scheme, at least two auxiliary support rollers are provided, and an auxiliary support roller 2 is provided between any two adjacent auxiliary support rollers, so that the part of the annular belt located below the main support roller 1 and the main support roller 2 forms a wavy stacking structure. When the height dimensions of the support 1 and the support 2 are constant, the part of the annular belt located between the main support roller 1 and the main support roller 2 can produce a larger deformation, and the distance between the support 1 and the support 2 can produce a larger change, which can be suitable for positioning more connecting rods with different rod lengths, further expanding the scope of application.

[0024] Furthermore, a slideway inclined downward from left to right is provided on the frame, support one is fixedly installed in the slideway, support two is slidably installed in the slideway along the extension direction of the slideway, and the top surfaces of support one and support two remain coplanar and parallel to the bottom surface of the slideway.

[0025] By adopting the above technical solution, support one and support two are both installed in a slideway inclined downward from left to right. The top surfaces of support one and support two are flush and parallel to the bottom surface of the slideway. No matter how the position of support two changes, support one and support two can always maintain the top surface of support one and support two inclined downward from left to right. This makes it easy to clean the metal chips that fall on support one and support two during the drilling process. These metal chips are easy to slide to the right uniformly along the inclined direction, making the cleaning process more convenient and facilitating subsequent collection.

[0026] Furthermore, a collection box is installed on the frame, and the collection box is arranged at the right end of the slide and below the slide.

[0027] The beneficial effect of the drilling device for connecting rod processing provided by the present invention is that the present invention can be used to firmly clamp and position connecting rods of various specifications and sizes, and has a wider range of applications. The positioning of the present invention is more firm, the position of the connecting rod is more accurate after positioning, and the drilling accuracy is higher. In the present invention, the space between the support 1 and the support 2 for placing the connecting rod is blocked, and the chips generated by drilling will not fall between the support 1 and the support 2, making it easier to clean the chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A front view of a drilling device for connecting rod processing provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure at D in the middle is enlarged; Figure 3 for Figure 1 Left view of Figure 4 for Figure 1 A top view of Figure 5 for Figure 1 Rear view of Figure 6 A cross-sectional view from a top view of a drilling device for connecting rod processing provided by the present invention; Figure 7 A schematic diagram of the three-dimensional structure of a connecting rod drilling device provided by the present invention from a front view perspective Figure 1 ; Figure 8 for Figure 7 A schematic diagram of the structure enlargement at the center A; Fig. 9 for Figure 7 A schematic diagram of the structure enlarged at B in the middle; Fig.10 A three-dimensional structure diagram of a connecting rod processing drilling device provided by the present invention from a rear view perspective Figure 2 ; Fig.11 for Fig.10 A schematic diagram of the structure enlarged at C in the middle; Fig.12 A cross-sectional view of a support 1, a support 2 and a belt assembly in a drilling device for connecting rod processing provided by the present invention; Fig.13 for Fig.12 Enlarged schematic diagram of the structure at E in the middle.

[0029] Description of reference numerals: 1. Frame; 101. Working platform; 102. Slideway; 2. Baffle; 201. Strip slide hole; 202. Vertical guide hole 1; 203. Vertical guide hole 2; 3. Connecting rod; 4. Support 1; 401. Through hole 1; 402. Ridge with arc groove 1; 5. Support 2; 501. Through hole 2; 502. Ridge with arc groove 2; 6. Rotating shaft 1; 601. Spiral through hole 1; 7. Annular belt; 8. Transmission rod 1; 9. Transmission rod 2; 10. Support shaft 1; 11. Positioning rod 1; 111. Strip hole 1; 12. Rotating shaft 2; 121. Spiral through hole 2; 13. Support shaft 2; 14. Positioning rod 2; 141. Strip hole 2; 15. Fastener; 16. Mounting plate; 17. Guide slot block; 171. Guide slide; 18. Connecting shaft; 19. Support frame 1; 20. Support frame 2; 21. Lifting drive cylinder 1; 22. Lifting drive cylinder 2; 23. Feed cylinder; 24. Drilling support; 25. Support plate; 26. Double-head adjustment cylinder; 27. Drill bit assembly; 28. Main support roller 1; 29. ​​Main support roller 2; 30. Auxiliary support roller 1; 31. Auxiliary support roller 2; 32. Square block 1; 33. Square block 2; 34. Elastic member 1; 35. Elastic member 2. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] The following is one embodiment of a connecting rod processing drilling device provided by the present invention: like Figure 1-Figure 13 As shown, a drilling device for connecting rod processing includes a frame 1, a positioning mechanism and a drilling mechanism.

[0032] like Figure 1-Figure 7 As shown, the rack 1 is placed on a horizontal ground, and a horizontally arranged working platform 101 is provided on the top of the rack 1. A slideway 102 is provided on the working platform 101, which is inclined downward from left to right. Two vertically arranged baffles 2 are symmetrically provided on the front and rear sides of the slideway 102. The top edges of the baffles 2 are inclined downward from left to right, and the inclination angle is consistent with the inclination angle of the slideway 102. A collection box is installed on the right side of the rack 1, and the collection box is received below the right end of the slideway 102. The collection box is not shown in the figure.

[0033] The positioning mechanism includes a big head positioning assembly, a small head positioning assembly and a belt assembly. The big head positioning assembly is fixedly installed on the working platform 101 in the left and right positions, and the small head positioning assembly is slidably installed on the working platform 101 and is located on the right side of the big head positioning assembly. The belt assembly is connected between the big head positioning assembly and the small head positioning assembly.

[0034] like Figure 1-Figure 12 As shown, the big head positioning assembly includes a support 4, a rotating shaft 6, a support shaft 10, a positioning rod 11 and a rotating drive assembly.

[0035] like Figure 7 , Figure 8 , Fig.12 As shown, the support 4 is fixedly installed in the slide 102 and is located at the left end of the slide 102. The top surface of the support 4 is parallel to the bottom surface of the slide 102. The center of the support 4 is provided with a through hole 401 that passes through from top to bottom.

[0036] The rotating shaft 6 extends vertically, and the rotating shaft 6 is located above the support 4. The rotating shaft 6 is coaxial with the through hole 401 and is rotatably mounted on the support 4. A spiral through hole 601 extending vertically and penetrating from top to bottom is provided at the center of the rotating shaft 6, and the spiral through hole 601 is coaxial with the through hole 401.

[0037] There are three support shafts 10 , and the three support shafts 10 all extend vertically. The three support shafts 10 are evenly arranged on the outside of the rotating shaft 6 and are spaced apart from the rotating shaft 6 .

[0038] There are three positioning rods 11, which extend horizontally and are evenly arranged outside the rotating shaft 6. The positioning rod 11 is provided with a strip hole 111 extending along the rod length direction of the positioning rod 11, which runs through the positioning rod 11 from top to bottom. One end of the positioning rod 11 is hinged on the rotating shaft 6 around the vertically extending rotation axis, and is sleeved on the corresponding supporting shaft 10 through the strip hole 111. When the rotating shaft 6 rotates, it can drive the three positioning rods 11 to swing around the supporting shaft 10, so that the distance between the outer ends of the three positioning rods 11 and the rotating shaft 6 changes.

[0039] The rotation drive assembly 1 includes a support frame 19, a lifting drive cylinder 21 and a transmission rod 8. The support frame 19 is fixedly mounted on the frame 1 and is located at the rear side of the support 4. The lifting drive cylinder 21 is mounted on the support frame 19 and is located directly above the support 4. The transmission rod 8 extends vertically and is mounted on the lifting output end of the lifting drive cylinder 21. The transmission rod 8 is coaxial with the above-mentioned spiral through hole 601. The lifting drive cylinder 21 can drive the transmission rod 8 to move downward, so that the transmission rod 8 is inserted into the spiral through hole 601. The transmission rod 8 is matched with the rotating shaft 6 through the spiral through hole 601, thereby driving the rotating shaft 6 to rotate, so that the position of the outer end of each positioning rod 11 changes.

[0040] like Figure 7 , Fig. 9 , Fig.12 As shown, the small head positioning assembly includes a support 2 5, a rotating shaft 2 12, a supporting shaft 2 13, a positioning rod 2 14 and a rotating drive assembly 2. The sizes of the rotating shaft 2 12, the supporting shaft 2 13 and the positioning rod 2 14 are all correspondingly smaller than the sizes of the rotating shaft 1 6, the supporting shaft 10 and the positioning rod 11.

[0041] The support 2 5 is slidably installed in the slideway 102, and can slide left and right along the inclined direction of the slideway 102. The support 2 5 is located on the right side of the support 1 4, the top surface of the support 2 5 is parallel to the bottom surface of the slideway 102 and is flush with the top surface of the support 1 4, and the center of the support 2 5 is provided with a through hole 2 501 that passes through from top to bottom.

[0042] like Figure 7 , Fig.10 , Fig.11 As shown, two symmetrically arranged fasteners 15 are fixedly connected to the front and rear sides of the support 2 5, respectively. The fastener 15 includes a horizontal connecting section and a U-shaped section with an opening facing downward. The horizontal connecting section is fixedly connected to the support 2 5, and the U-shaped section is buckled from top to bottom on the corresponding baffle 2. A vertically extending guide slot block 17 is provided on the rear side wall of the fastener 15 at the rear side, and a vertically extending guide slot 171 is provided on the guide slot block 17.

[0043] like Fig. 9 , Fig.12 As shown, the second rotating shaft 12 extends vertically, the second rotating shaft 12 is located above the second support 5, the second rotating shaft 12 is coaxial with the second through hole 501 and is rotatably mounted on the second support 5. The center of the second rotating shaft 12 is provided with a second spiral through hole 121 extending vertically and penetrating from top to bottom, and the second spiral through hole 121 is coaxial with the second through hole 501.

[0044] There are three supporting shafts 13 , and the three supporting shafts 13 extend vertically. The three supporting shafts 13 are evenly arranged outside the rotating shaft 12 and are spaced apart from the rotating shaft 12 .

[0045] There are three positioning rods 14, which extend horizontally and are evenly arranged outside the rotating shaft 12. The positioning rod 14 is provided with a strip hole 141 extending along the rod length direction of the positioning rod 14, which runs through the positioning rod 14 from top to bottom. One end of the positioning rod 14 is hinged on the rotating shaft 12 around the vertically extending rotation axis, and is sleeved on the corresponding supporting shaft 13 through the strip hole 141. When the rotating shaft 12 rotates, the three positioning rods 14 can be driven to swing around the supporting shaft 13, so that the distance between the outer ends of the three positioning rods 14 and the rotating shaft 12 changes.

[0046] like Figure 1 , Figure 7 , Fig.10 As shown, the rotation drive assembly 2 includes a support frame 20, a lifting drive cylinder 22 and a transmission rod 29. The support frame 20 is installed on the frame 1 and is located at the rear side of the support 2 5 in a sliding manner. The support frame 20 is connected with a connecting shaft 18 extending forward and backward. One end of the connecting shaft 18 is fixedly connected to the support frame 20, and the other end is inserted into the above-mentioned guide slot 171. When the support 25 moves left and right along the slideway 102, the support frame 20 is driven to move left and right by the connecting shaft 18. During the movement, the connecting shaft 18 slides up and down in the guide slot 171, which can avoid the interference between the tilting left and right movement process of the support 25 and the horizontal left and right movement process of the support frame 20.

[0047] The lifting drive cylinder 22 is installed on the support frame 20 and is located directly above the support 25. The transmission rod 29 extends vertically and is installed on the lifting output end of the lifting drive cylinder 22. The transmission rod 29 is coaxial with the above-mentioned spiral through hole 21. The lifting drive cylinder 22 can drive the transmission rod 29 to move downward, so that the transmission rod 29 is inserted into the spiral through hole 2121. The transmission rod 29 is matched with the rotating shaft 212 through the spiral through hole 2121, thereby driving the rotating shaft 212 to rotate, so that the position of the outer end of each positioning rod 214 changes.

[0048] like Figure 4 , Figure 6 , Figure 7 , Fig.12 As shown, the belt assembly includes a main support roller 1 28, a main support roller 29, an auxiliary support roller 1 30, an auxiliary support roller 2 31 and an endless belt 7.

[0049] The main support roller 28 extends forward and backward, is located on the right side of the support 4 and is close to the top surface of the support 4 and is arranged below the top surface of the support 4. The main support roller 28 is rotatably installed on the two baffles 2 around the rotation axis extending forward and backward, and the axial position of the main support roller 28 is fixed relative to the support 4.

[0050] The second main support roller 29 extends forward and backward. The second main support roller 29 is located on the left side of the support 2 5 and is close to the top surface of the support 2 5 and is arranged below the top surface of the support 2 5 .

[0051] A mounting plate 16 is connected to the left side of the two fasteners 15. The two mounting plates 16 are symmetrical front to back and are both located on the outside of the two baffles 2. The two baffles 2 are each provided with a strip sliding hole 201 that passes through the front and back. The strip sliding hole 201 is parallel to the bottom surface of the slideway 102. The front and rear ends of the main support roller 29 respectively pass through the strip sliding holes 201 on the two baffles 2 and are rotatably mounted on the corresponding mounting plate 16. When the support 25 moves left and right along the slideway 102, it can drive the main support roller 29 to move left and right synchronously.

[0052] like Figure 1 , Figure 2 , Fig.12 As shown, there are three auxiliary rollers 30, and the three auxiliary rollers 30 extend in the front-back direction and are arranged at equal intervals. The two baffles 2 are provided with three guide vertical holes 202 arranged at intervals, and the guide vertical holes 202 are located between the support 4 and the support 2 5. The front and rear ends of the three auxiliary rollers 30 pass through the two corresponding guide vertical holes 202 on the two baffles 2 and extend to the outside of the baffles 2. The two ends of the auxiliary rollers 30 extending to the outside of the two baffles 2 are rotatably connected to the square blocks 32, and the square blocks 32 and the working platform 101 are connected with a vertically extending elastic member 34.

[0053] like Figure 1 , Figure 2 , Fig.12 As shown, there are two auxiliary support rollers 2 31, both of which extend in the front-to-back direction and are arranged at intervals from left to right, and one auxiliary support roller 2 31 is arranged above the area between each two adjacent auxiliary support rollers 1 30. The two baffles 2 are also provided with two guide vertical holes 203 arranged at intervals from left to right, and the guide vertical holes 203 are inserted between the three guide vertical holes 1 202 on the baffles 2. The front and rear ends of the auxiliary support roller 2 31 respectively pass through the corresponding guide vertical holes 203 on the two baffles 2 and extend to the outside of the two baffles 2. Both ends of the auxiliary support roller 2 31 extending to the outside of the two baffles 2 are rotatably connected to the square block 2 33, and the square block 2 33 and the working platform 101 are connected to the elastic member 2 35 extending vertically.

[0054] The annular belt 7 is sleeved on the outer sides of the main supporting roller 1 28, the main supporting roller 29 and the three auxiliary supporting rollers 1 30. The left end of the annular belt 7 is tightly against the right side wall of the support 1 4, and the right end of the annular belt 7 is tightly against the left side wall of the support 2 5. The top surface of the annular belt 7 is flush with the top surfaces of the supports 1 4 and 2 5. The two auxiliary supporting rollers 2 31 press the portion of the annular belt 7 between two adjacent auxiliary supporting rollers 1 30 to the top of the auxiliary supporting roller 1 30 from bottom to top.

[0055] like Fig.12 , Fig.13 As shown, in order to prevent the top surface of the annular belt 7 from accommodating chips in the groove at the connection position between the support 1 4 and the support 2 5, a ridge 1 402 with an arc groove is provided at the upper right end of the support 1 4, and a ridge 2 502 with an arc groove is provided at the upper left end of the support 2 5.

[0056] like Figure 7 As shown, the drilling mechanism includes a drilling support 24, a support plate 25, a feed cylinder 23, a drill assembly 27 and a double-head adjustment cylinder 26. The drilling support 24 is installed on the frame 1 for sliding left and right along the inclined direction of the slide 102. The support plate 25 is located above the drilling support 24. The top surface of the drilling support 24 is parallel to the bottom surface of the slide 102. The support plate 25 is movably installed on the drilling support 24 in a direction perpendicular to the top surface of the drilling support 24. A lifting and adjusting cylinder is installed on the drilling support 24. The support plate 25 is connected to the output end of the lifting and adjusting cylinder. The top surface of the support plate 25 is parallel to the bottom surface of the slide 102.

[0057] The feed cylinder 23 is installed on the work platform 101, and has an output end that can move left and right along the inclined direction of the slideway 102, and the drilling support 24 is connected to the output end of the feed cylinder 23. The feed cylinder 23 can drive the drilling support 24 to move rightward during the drilling process to achieve feeding.

[0058] There are two sets of drill bit assemblies 27, which are arranged on the support plate 25 at intervals in the front and rear directions and are slidably mounted on the support plate 25 in the front and rear directions. The drill bit assembly 27 is a prior art, and the drill bit rotates to process a hole on the connecting rod during the drilling process, and its structure will not be described in detail here.

[0059] The double-headed adjusting cylinder 26 is installed on the supporting plate 25. The double-headed adjusting cylinder 26 has two output ends that can move forward and backward. The two groups of drill bit assemblies are respectively connected to the two output ends of the double-headed adjusting cylinder 26. The double-headed adjusting cylinder 26 can drive the two groups of drill bit assemblies to move closer to or away from each other to adapt to the connecting rod 3 with different bolt hole spacing sizes.

[0060] In the prior art, the big end of the connecting rod 3 is separated by breaking. The present invention is used to perform drilling processing on the connecting rod before breaking.

[0061] When the present invention is in use, in the initial state, the three positioning rods 11 and the three positioning rods 2 14 are all in the minimum retracted state. The distance between the support 1 4 and the support 2 5 is adjusted according to the size of the connecting rod 3 to be processed, and the large head end of the connecting rod 3 is placed on the outside of the three positioning rods 11 on the support 1 4, and the small head end of the connecting rod 3 is placed on the outside of the three positioning rods 2 14 on the support 2 5. Start the lifting drive cylinder 21 to control the transmission rod 8 to move downward. The transmission rod 8 is inserted into the spiral through hole 601 on the rotating shaft 6. The transmission rod 8 cooperates with the spiral transmission of the rotating shaft 6 through the spiral through hole 601 to drive the rotating shaft 6 to rotate. The rotating shaft 6 drives the outer ends of the three positioning rods 11 to move away from each other, so that the three positioning rods 11 are pressed against the inner wall of the big end of the connecting rod 3. At the same time, the big end of the connecting rod 3 and the rotating shaft 6 are aligned, eliminating the position deviation between the connecting rod 3 and the rotating shaft 6 when it is placed.

[0062] Then, the lifting drive cylinder 22 is started, and the lifting drive cylinder 22 drives the transmission rod 29 to move downward. The transmission rod 29 is inserted into the spiral through hole 2121 on the rotating shaft 212, and the transmission rod 29 cooperates with the spiral transmission of the rotating shaft 212 to drive the rotating shaft 212 to rotate. The rotating shaft 212 drives the outer ends of the three positioning rods 214 to move away from each other, so that the three positioning rods 214 are pressed against the inner wall of the small head end, thereby fixing the small head end of the connecting rod 3.

[0063] After the connecting rod 3 is fixed, the drilling mechanism is started to drill the connecting rod 3. First, the height of the support plate 25 is adjusted according to the size of the fixed connecting rod 3 by controlling the lifting and lowering adjusting cylinder, and then the double-head adjusting cylinder 26 is controlled to adjust the spacing between the two sets of drill bit assemblies 27 so that the two sets of drill bit assemblies 27 correspond to the positions of the two bolt holes on the connecting rod 3 respectively. Then, the feed cylinder 23 and the drill bit assembly 27 are started to drill the bolt holes on the connecting rod 3.

[0064] The height of the baffle 2 can be increased to block the chips generated by drilling. After the drilling is completed, the iron chips generated by the drilling are blocked by the baffles 2 on both sides, and most of them fall between the two baffles 2 and are located on the top surface of the support 1 4, the support 2 5 and the endless belt 7. At this time, the iron chips can be brushed to the right by a brush or blown to the right by a fan, and finally the iron chips fall into the collection box, so that the iron chips are cleaned and collected.

[0065] The present invention can clamp and position connecting rods 3 of different specifications and sizes, and has a wider scope of application. In the present invention, iron filings generated by drilling will not fall between the support 1 4 and the support 2 5, and the generated iron filings are easier to clean.

[0066] In this embodiment, a support shaft 10 is provided on the outer side of the rotating shaft 16, and a support shaft 2 13 is provided on the outer side of the rotating shaft 2 12. The positioning rod 11 is hinged to the rotating shaft 16 and is sleeved on the support shaft 10 through a strip hole 111 to realize the transmission connection between the positioning rod 11 and the rotating shaft 16. The positioning rod 2 14 is hinged to the rotating shaft 2 12 and is sleeved on the support shaft 2 13 through a strip hole 141 to realize the transmission connection between the positioning rod 2 14 and the rotating shaft 2 12, so that when the rotating shaft 16 rotates, the position of the outer end of the positioning rod 11 can be changed, and when the rotating shaft 2 12 rotates, the outer end of the positioning rod 2 14 can be driven to change. The position changes. In other embodiments, the positioning rod 11 is elastically slidably installed on the support 4 along the radial direction of the rotating shaft 6. The outer periphery of the rotating shaft 6 is provided with an arc-shaped protrusion 1 extending vertically along the axis. During the rotation of the rotating shaft 6, the arc-shaped protrusion 1 pushes the positioning rod 11 so that the outer ends of multiple positioning rods 11 are separated from each other. The positioning rod 2 14 is elastically slidably installed on the support 2 5 along the radial direction of the rotating shaft 2 12. The outer periphery of the rotating shaft 2 12 is provided with an arc-shaped protrusion 2 extending vertically along the axis. During the rotation of the rotating shaft 2 12, the arc-shaped protrusion 2 pushes the positioning rod 2 14 so that the outer ends of multiple positioning rods 2 14 are separated from each other.

[0067] In this embodiment, the connecting shaft 18 is provided to relatively fix the positions of the rotating drive component 2 and the support 2 5 in the left-right direction. In other embodiments, the connecting shaft 18 is not provided. At this time, the movements of the support 2 5 and the rotating drive component 2 in the left-right direction are relatively independent. When positioning the connecting rod 3, it is necessary to adjust the position of the rotating drive component after adjusting the position of the support 2 5 each time, so that the transmission rod 2 9 and the rotating shaft 2 12 remain coaxial.

[0068] In this embodiment, the belt assembly includes two auxiliary support rollers 2 31. In other embodiments, the belt assembly does not include auxiliary support rollers 2 31. In this case, the size of the portion of the endless belt 7 located between the main support roller 1 28 and the main support roller 2 29 in the left-right direction can change less.

Claims

1. A connecting rod processing drilling device, comprising a frame and a drilling mechanism and a positioning mechanism mounted on the frame, characterized in that: The positioning mechanism includes a large head positioning component and a small head positioning component arranged in sequence in the left and right directions; The big head positioning assembly includes a support 1 fixedly mounted on the frame, a rotating shaft 1 rotatably mounted on the support 1 around a rotating axis extending vertically, and a plurality of positioning rods 1 mounted on the support 1 and evenly distributed on the outside of the rotating shaft 1, the rotating shaft 1 and the plurality of positioning rods 1 are used to be arranged in the inner ring of the big head end of the connecting rod, the rotating shaft 1 is in transmission connection with the plurality of positioning rods 1, and when the rotating shaft 1 rotates, the plurality of positioning rods 1 can be driven to move away from each other, so that the plurality of positioning rods 1 are pressed against the inner hole wall of the big head end of the connecting rod; The small head positioning assembly includes a support 2 mounted on the frame for left and right movement, a rotating shaft 2 mounted on the support 2 and rotatably mounted around a vertically extending rotating axis, and a plurality of positioning rods 2 mounted on the support 2 and evenly distributed on the outside of the rotating shaft 2. The rotating shaft 2 and the plurality of positioning rods 2 are used to be arranged in the inner ring of the small head end of the connecting rod. The rotating shaft 2 is connected to the plurality of positioning rods 2 in transmission. When the rotating shaft 2 rotates, it can drive the plurality of positioning rods 2 to move away from each other so that the plurality of positioning rods 2 are pressed against the inner hole wall of the small head end of the connecting rod.

2. A connecting rod processing drilling device according to claim 1, characterized in that: A plurality of vertically extending support shafts are fixedly arranged on the support seat, and the plurality of support shafts are evenly distributed on the outside of the rotating shaft. A strip hole is provided on the positioning rod, which extends along the length of the rod and passes vertically through the rod. Each positioning rod is hinged at one end on the rotating shaft and is mounted on the outside of the corresponding support shaft through the strip hole.

3. A connecting rod drilling device according to claim 2, characterized in that: A plurality of vertically extending support shafts are fixedly provided on the support seat 2, and the plurality of support shafts are evenly distributed on the outside of the rotating shaft 2. The positioning rod 2 is provided with two strip holes extending along the length of the rod and vertically penetrating therethrough. One end of each positioning rod is hinged on the rotating shaft 2, and is mounted on the outside of the corresponding support shaft 2 through the two strip holes.

4. A connecting rod processing drilling device according to any one of claims 1 to 3, characterized in that: A vertically extending spiral through hole is provided in the rotating shaft, and a rotating drive assembly is also provided on the frame. The rotating drive assembly includes a transmission rod that can move up and down. The transmission rod is coaxial with the spiral through hole and is located above the spiral through hole. The transmission rod can move downward and be inserted into the spiral through hole to cooperate with the spiral transmission of the rotating shaft, thereby driving the rotating shaft to rotate.

5. A connecting rod processing drilling device according to claim 4, characterized in that: A vertically extending spiral through hole is provided in the second rotating shaft, and a rotating drive component two that can move left and right is also provided on the frame. The rotating drive component two includes a transmission rod two that can move up and down. The transmission rod two is coaxial with the spiral through hole two and is located above the spiral through hole two. The transmission rod two can move downward and be inserted into the spiral through hole two to cooperate with the spiral transmission of the second rotating shaft, thereby driving the second rotating shaft to rotate.

6. A connecting rod processing drilling device according to claim 5, characterized in that: The second rotation driving assembly is connected to the second support and is relatively fixed with respect to the second support in the left-right direction.

7. A connecting rod processing drilling device according to any one of claims 1 to 3, characterized in that: A belt assembly is connected between support one and support two, and the belt assembly includes main support roller one, main support roller two, auxiliary support roller one and an endless belt, each support roller extends forward and backward, and main support roller one and main support roller two are spaced from left to right, the axis position of main support roller one is relatively fixed with support one, the axis position of main support roller two is relatively fixed with support two, auxiliary support roller one is located below between main support roller one and main support roller two, and auxiliary support roller one is elastically slidably installed on the frame up and down, and the endless belt is sleeved on the outside of main support roller one, main support roller two and auxiliary support roller one, and the top surface of the part of the endless belt located between the main support roller one and the main support roller two is flush with the top surfaces of support one and support two, and the left and right ends of the endless belt are respectively in contact with support one and support two, and the frame is also provided with two baffles, which are respectively arranged on the front and rear sides of the endless belt and cover the area between support one and support two and are in contact with the endless belt.

8. A connecting rod processing drilling device according to claim 7, characterized in that: At least two auxiliary support rollers are provided, and the auxiliary support rollers are spaced apart from each other. The belt assembly also includes auxiliary support rollers extending forward and backward. An auxiliary support roller is provided between each two adjacent auxiliary support rollers. The auxiliary support rollers are elastically slidably installed on the frame up and down. The auxiliary support rollers press the part of the annular belt between the two adjacent auxiliary support rollers to the top of the auxiliary support roller from bottom to top.

9. A connecting rod processing drilling device according to any one of claims 1 to 3, characterized in that: The frame is provided with a slideway which is inclined downward from left to right, the support one is fixedly installed in the slideway, the support two is slidably installed in the slideway along the extension direction of the slideway, and the top surfaces of the support one and the support two are kept coplanar and parallel to the bottom surface of the slideway.

10. A connecting rod drilling device according to claim 9, characterized in that: A collection box is also installed on the frame, and the collection box is arranged at the right end of the slide and below the slide.

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