Crankshaft blank machining drilling machine

Abstract

The utility model discloses a crankshaft blank machining drilling machine. Comprising a base, a horizontal rotating disc rotationally connected with the base, a top cover connected with the base through a plurality of mounting arms and located above the rotating disc, and a rotating mechanism assembled on the top cover and used for driving the rotating disc to rotate. The clamp units are evenly distributed in the circumferential direction of the rotary disc, assembled on the rotary disc and used for clamping a vertical crankshaft, and the drilling mechanisms are symmetrically arranged in the vertical direction, assembled on the base and the top cover correspondingly and used for drilling the ends of the crankshaft. The pair of drilling mechanisms can drill the two ends of the crankshaft at the same time, the drilling work efficiency is high, when the rotating disc rotates, the crankshaft which is already drilled can rotate to a station corresponding to an operator, when the drilling mechanisms work, the operator can take out the crankshaft which is already drilled and place a new crankshaft on a corresponding clamp unit, and the drilling efficiency is high. And the crankshaft drilling time is fully utilized, so that the overall working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to crankshaft blank processing, and in particular to a crankshaft blank processing drilling machine. Background Art

[0002] The crankshaft is the most critical component in the engine. It receives force from the connecting rod, converts it into torque, and drives the engine's accessories. The crankshaft is subject to the combined effects of centrifugal force from the rotating mass, cyclically changing gas inertia, and reciprocating inertia, subjecting it to bending and torsional loads. Therefore, the crankshaft must possess sufficient strength and rigidity, and its journal surface must be wear-resistant, operate evenly, and be well-balanced.

[0003] After the crankshaft blank is processed, it is necessary to drill a hole at the end of the main journal of the crankshaft so that it can be clamped and fine-machined. In the existing technology, the crankshaft blank is clamped with a clamp. After the drilling mechanism drills the end of the crankshaft, the clamp is rotated so that the other end of the crankshaft is facing the drilling mechanism for drilling again. The material is manually unloaded and loaded before drilling again. The work efficiency is low. Therefore, it is necessary to design a crankshaft blank processing drilling machine. Utility Model Content

[0004] In view of the above technical problems, the purpose of the present invention is to overcome the problem of low drilling efficiency of crankshaft blanks in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a crankshaft blank processing and drilling machine, comprising: a base, a horizontal turntable rotatably connected to the base, a top cover connected to the base through a plurality of mounting arms and located above the assembly, a rotating mechanism mounted on the top cover for driving the turntable to rotate, at least three groups of clamp units evenly distributed along the circumferential direction of the turntable and all mounted on the turntable for clamping the vertical crankshaft, and a pair of drilling mechanisms arranged in a symmetrical state along the vertical direction and respectively mounted on the base and the top cover for drilling holes in the end portion of the crankshaft.

[0006] Preferably, the clamp unit comprises a positioning cylinder with an open top fixedly connected to the turntable and a clamp mechanism assembled on the turntable, the bottom of the positioning cylinder is provided with a first through-slot for the end of the crankshaft to pass through, and the turntable is penetrated by a second through-slot opposite to the positioning cylinder;

[0007] The clamping mechanism includes a pair of symmetrically arranged rotating plates, both of which are in contact with the upper surface of the turntable and are connected to the turntable for rotation, and a driving component assembled on the turntable for driving the pair of rotating plates to rotate toward or away from each other. A positioning notch is recessed on the side of the rotating plate close to the other rotating plate and can be clamped on the end of the crankshaft.

[0008] Preferably, a vertical rotating shaft connected to the turntable is fixedly connected to the turntable, and the driving component is arranged at the bottom of the turntable. The driving component includes a pair of gears that are meshed with each other and respectively mounted on the lower ends of a pair of rotating shafts, a connecting rod fixedly connected to the lower end of one of the rotating shafts, and a first electric push rod hinged to the turntable and with the output shaft hinged to the connecting rod away from the end of the rotating shaft.

[0009] Preferably, the bottom of the positioning cylinder is a detachable positioning block connected by a plurality of first mounting bolts, the first through groove is located on the positioning block, the rotating plate includes a cover plate fixedly connected to the rotating shaft and a clamping plate detachably assembled on the cover plate by a plurality of second mounting bolts, and the positioning notch is located on the clamping plate.

[0010] Preferably, an air blowing pipe is mounted on the top cover via a mounting bracket, and an air outlet of the air blowing pipe faces the corresponding rotating plate.

[0011] Preferably, the rotating mechanism includes a central shaft fixedly connected to the turntable coaxially and axially connected to the top cover, and a first motor assembled on the top cover and with the output shaft fixedly connected to the upper end of the central shaft. A support shaft coaxially connected to the turntable is fixedly connected to the base.

[0012] Preferably, the drilling mechanism includes a vertical pipe sleeve fixedly mounted on the top cover or the base, a vertical second electric push rod located inside the pipe sleeve and mounted on the top cover or the base, a mounting cylinder vertically fitted with a sliding sleeve on the outer wall of the pipe sleeve, and a second motor mounted inside the mounting cylinder, the output end of the second electric push rod is fixedly connected to the top of the mounting cylinder through a connecting frame, the vertical output shaft of the second motor passes through the top of the mounting cylinder, and a vertical drill bit is connected to the output shaft of the second motor.

[0013] According to the above technical solution, the utility model provides a crankshaft blank processing drilling machine, which has the following beneficial effects when used: a pair of drilling mechanisms can drill both ends of the crankshaft at the same time, and the drilling work efficiency is high. When the turntable rotates, the crankshaft that has been drilled before will rotate to the work station corresponding to the operator. When the drilling mechanism is working, the operator can take out the crankshaft that has been drilled and place the new crankshaft on the corresponding fixture unit, making full use of the crankshaft drilling time, thereby improving the overall work efficiency.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation methods; and the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a three-dimensional structural diagram of a crankshaft blank processing drilling machine provided by the present invention;

[0017] Figure 2 This is a partial three-dimensional structural diagram of a crankshaft blank processing drilling machine provided by the present invention;

[0018] Figure 3 This is a schematic diagram of the use of a fixture unit of a crankshaft blank processing drilling machine provided by the present invention;

[0019] Figure 4 This is a partial cross-sectional view of a fixture unit of a crankshaft blank processing drilling machine provided by the present invention;

[0020] Figure 5 This is a three-dimensional structural diagram of a drilling mechanism of a crankshaft blank processing drilling machine provided by the present invention;

[0021] Figure 6 It is a cross-sectional view of a drilling mechanism of a crankshaft blank processing drilling machine provided by the present invention.

[0022] Description of Reference Numerals

[0023] 1. Base; 2. Turntable; 3. Mounting arm; 4. Top cover; 5. Crankshaft; 6. Positioning cylinder; 7. Turntable; 8. Rotating shaft; 9. Gear; 10. Connecting rod; 11. First electric push rod; 12. Positioning block; 13. Cover plate; 14. Clamp; 15. Mounting frame; 16. Blowing pipe; 17. Center axis; 18. First motor; 19. Support shaft; 20. Pipe sleeve; 21. Second electric push rod; 22. Mounting cylinder; 23. Second motor; 24. Connecting frame; 25. Drill bit; 26. Baffle; 27. Interceptor shell. DETAILED DESCRIPTION

[0024] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0025] In the present invention, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0026] like Figure 1-6As shown, a crankshaft blank processing drilling machine includes: a base 1, a horizontal turntable 2 rotatably connected to the base 1, a top cover 4 connected to the base 1 through a plurality of mounting arms 3 and located above the assembly, a rotating mechanism mounted on the top cover 4 for driving the turntable 2 to rotate, at least three groups of clamp units evenly distributed along the circumferential direction of the turntable 2 and all mounted on the turntable 2 for clamping a vertical crankshaft 5, and a pair of drilling mechanisms arranged in a symmetrical state along the vertical direction and respectively mounted on the base 1 and the top cover 4 for drilling holes in the end of the crankshaft 5.

[0027] The operator places the crankshaft 5 into the clamp unit, which clamps the crankshaft 5. The rotating mechanism drives the turntable 2 to rotate, so that the clamp unit clamps the crankshaft 5 and moves it to the workstation corresponding to the drilling mechanism. A pair of drilling mechanisms can drill both ends of the crankshaft 5 at the same time, and the drilling work efficiency is high. When the turntable 2 rotates, the crankshaft 5 that has been drilled before will rotate to the workstation corresponding to the operator. When the drilling mechanism is working, the operator can take out the crankshaft 5 that has been drilled and place the new crankshaft 5 on the corresponding clamp unit, making full use of the time for drilling the crankshaft 5, thereby improving the overall work efficiency.

[0028] A baffle 26 connected to the mounting arm 3 is provided at the operator's standing position. The baffle 26 is used to block metal chips generated when the drilling mechanism below is drilling.

[0029] The clamp unit includes a positioning cylinder 6 with an open top fixedly connected to the turntable 2 and a clamp mechanism assembled on the turntable 2. The bottom of the positioning cylinder 6 is provided with a first through-slot for the end of the crankshaft 5 to pass through. The turntable 2 is penetrated by a second through-slot opposite to the positioning cylinder 6.

[0030] The clamping mechanism includes a pair of symmetrically arranged rotating plates 7, both of which are in contact with the upper surface of the turntable 2 and are rotatably connected to the turntable 2 and can be covered on the second through slot, and a driving component assembled on the turntable 2 for driving the pair of rotating plates 7 to rotate toward or away from each other. The side of the rotating plate 7 close to the other rotating plate 7 is recessed with a positioning notch that can be clamped on the end of the crankshaft 5.

[0031] The driving component drives a pair of rotating plates 7 to rotate in opposite directions to expose the second through slot. The operator inserts the crankshaft 5 downward into the positioning cylinder 6. One end of the crankshaft 5 will pass through the first through slot. The driving component then drives the pair of rotating plates 7 to rotate in opposite directions. The pair of rotating plates 7 will clamp the upper end of the crankshaft 5 and cover the second through slot to prevent metal chips from falling into the positioning cylinder 6.

[0032] A vertical rotating shaft 8 axially connected to the turntable 2 is fixedly connected to the turntable 7, and the driving component is arranged at the bottom of the turntable 2. The driving component includes a pair of gears 9 that are meshed with each other and respectively mounted on the lower ends of a pair of rotating shafts 8, a connecting rod 10 fixedly connected to the lower end of one of the rotating shafts 8, and a first electric push rod 11 that is hinged to the turntable 2 and the output shaft is hinged to the end of the connecting rod 10 away from the rotating shaft 8.

[0033] The first electric push rod 11 drives one of the rotating shafts 8 to rotate through the connecting rod 10, and then drives the other rotating shaft 8 to rotate through a pair of meshing gears 9, thereby driving the pair of rotating plates 7 to rotate towards or away from each other.

[0034] The bottom of the positioning cylinder 6 is a detachable positioning block 12 connected by a number of first mounting bolts, the first through groove is located on the positioning block 12, the rotating plate 7 includes a cover plate 13 fixedly connected to the rotating shaft 8 and a clamping plate 14 detachably assembled on the cover plate 13 by a number of second mounting bolts, the positioning notch is located on the clamping plate 14, and both the positioning block 12 and the clamping plate 14 can be replaced.

[0035] The top cover 4 is equipped with an air blowing pipe 16 via a mounting frame 15 , and the air outlet of the air blowing pipe 16 faces the corresponding rotating plate 7 .

[0036] The air blowing pipe 16 is connected to the air pump through a hose. The air pump and the hose are existing mature technologies. The blown air flow can blow away the metal chips on the rotating plate 7; if there are metal chips on the rotating plate 7, when a pair of rotating plates 7 rotate away from the end of the crankshaft 5, the metal chips are easy to fall into the positioning cylinder 6.

[0037] The rotating mechanism includes a central shaft 17 coaxially fixedly connected to the turntable 2 and axially connected to the top cover 4, and a first motor 18 assembled on the top cover 4 and with its output shaft fixedly connected to the upper end of the central shaft 17. A support shaft 19 coaxially connected to the turntable 2 is fixedly connected to the base 1.

[0038] The drilling mechanism includes a vertical pipe sleeve 20 fixedly mounted on the top cover 4 or the base 1, a vertical second electric push rod 21 located inside the pipe sleeve 20 and mounted on the top cover 4 or the base 1, a mounting tube 22 vertically fitted and slidably sleeved on the outer wall of the pipe sleeve 20, and a second motor 23 mounted inside the mounting tube 22. The output end of the second electric push rod 21 is fixedly connected to the top of the mounting tube 22 through a connecting frame 24, the vertical output shaft of the second motor 23 passes through the top of the mounting tube 22, and a vertical drill bit 25 is connected to the output shaft of the second motor 23.

[0039] When the turntable 2 drives the corresponding clamp unit to move to the work station opposite to the drilling mechanism, the second electric push rod 21 pushes the mounting tube 22 to slide on the sleeve 20 close to the end of the crankshaft 5, driving the second motor 23 and the drill bit 25 to move close to the end of the crankshaft 5, and the second motor 23 drives the drill bit 25 to rotate at the end of the crankshaft 5 to drill.

[0040] An interception shell 27 arranged coaxially is assembled on the mounting cylinder 22 on the upper drilling mechanism to intercept flying metal chips and protect the operator.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0043] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A crankshaft blank processing drilling machine, characterized in that: include: A base (1), a horizontal turntable (2) rotatably connected to the base (1), a top cover (4) connected to the base (1) via a plurality of mounting arms (3) and located above the assembly, a rotating mechanism mounted on the top cover (4) for driving the turntable (2) to rotate, at least three groups of clamp units evenly distributed along the circumference of the turntable (2) and mounted on the turntable (2) for clamping a vertical crankshaft (5), and a pair of drilling mechanisms symmetrically arranged along the vertical direction and respectively mounted on the base (1) and the top cover (4) for drilling holes in the end of the crankshaft (5).

2. A crankshaft blank processing drilling machine according to claim 1, characterized in that: The clamp unit comprises a positioning cylinder (6) with an open top fixedly connected to the turntable (2) and a clamp mechanism assembled on the turntable (2); a first through-slot for the end of the crankshaft (5) to pass through is provided at the bottom of the positioning cylinder (6); and a second through-slot opposite to the positioning cylinder (6) is provided through the turntable (2); The clamping mechanism comprises a pair of symmetrically arranged rotating plates (7) both arranged on the upper surface of the rotating disk (2) and rotatably connected to the rotating disk (2) and capable of covering a second through slot, and a driving member mounted on the rotating disk (2) and used to drive the pair of rotating plates (7) to rotate toward or away from each other, wherein a positioning notch is recessed on a side of the rotating plate (7) close to the other rotating plate (7) and can be clamped on the end of the crankshaft (5).

3. The crankshaft blank processing drilling machine according to claim 2, characterized in that: A vertical rotating shaft (8) axially connected to the rotating disk (2) is fixedly connected to the rotating plate (7), and the driving component is arranged at the bottom of the rotating disk (2). The driving component includes a pair of gears (9) that are meshed with each other and respectively sleeved on the lower ends of the pair of rotating shafts (8), a connecting rod (10) fixedly connected to the lower end of one of the rotating shafts (8), and a first electric push rod (11) hinged to the rotating disk (2) and an output shaft hinged to the end of the connecting rod (10) away from the rotating shaft (8).

4. The crankshaft blank processing drilling machine according to claim 2, characterized in that: The bottom of the positioning cylinder (6) is a detachable positioning block (12) connected by a plurality of first mounting bolts, the first through slot is located on the positioning block (12), the rotating plate (7) includes a cover plate (13) fixedly connected to the rotating shaft (8) and a clamping plate (14) detachably assembled on the cover plate (13) by a plurality of second mounting bolts, and the positioning notch is located on the clamping plate (14).

5. The crankshaft blank processing drilling machine according to claim 2, characterized in that: The top cover (4) is equipped with an air blowing pipe (16) via a mounting frame (15), and the air outlet of the air blowing pipe (16) faces the corresponding rotating plate (7).

6. The crankshaft blank processing drilling machine according to claim 1, characterized in that: The rotating mechanism comprises a central shaft (17) fixedly connected coaxially with the turntable (2) and axially connected to the top cover (4), and a first motor (18) assembled on the top cover (4) and having an output shaft fixedly connected to the upper end of the central shaft (17); and a supporting shaft (19) fixedly connected coaxially with the turntable (2) is fixedly connected to the base (1).

7. The crankshaft blank processing drilling machine according to claim 1, characterized in that: The drilling mechanism comprises a vertical pipe sleeve (20) fixedly mounted on the top cover (4) or the base (1), a vertical second electric push rod (21) located inside the pipe sleeve (20) and mounted on the top cover (4) or the base (1), a mounting tube (22) vertically fitted and slidably mounted on the outer wall of the pipe sleeve (20), and a second motor (23) mounted inside the mounting tube (22), wherein the output end of the second electric push rod (21) is fixedly connected to the top of the mounting tube (22) via a connecting frame (24), the vertical output shaft of the second motor (23) passes through the top of the mounting tube (22), and the output shaft of the second motor (23) is connected to a vertical drill bit (25).

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