CN220971536U - Rotary clamp for crank arm boring and drilling center hole - Google Patents
Rotary clamp for crank arm boring and drilling center hole Download PDFInfo
- Publication number
- CN220971536U CN220971536U CN202322831146.8U CN202322831146U CN220971536U CN 220971536 U CN220971536 U CN 220971536U CN 202322831146 U CN202322831146 U CN 202322831146U CN 220971536 U CN220971536 U CN 220971536U
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- plate
- hole
- crank arm
- boring
- rotating plate
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- 238000003825 pressing Methods 0.000 claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 210000001624 hip Anatomy 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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- Drilling And Boring (AREA)
Abstract
The utility model provides a rotary clamp for boring and drilling a center hole by a crank arm, which comprises a bottom plate, a rotary plate, two V-shaped blocks, a positioning bolt, a positioning mandrel, a large drilling template and a small drilling template; the centers of the rotating plate and the bottom plate are respectively provided with a central hole I and a central hole II, and the central holes I and the central holes II are coaxial and connected through a positioning mandrel; the rotating plate is connected with the bottom plate through a positioning bolt; the two V-shaped blocks are arranged on the rotating plate in parallel, the V-shaped blocks are used for supporting the crank arms, and the top of each V-shaped block is provided with a pressing plate respectively; the large drill plate and the small drill plate are respectively arranged at two ends of the rotating plate, are parallel to the V-shaped blocks and are respectively provided with a drill bushing. The crank arm boring device is simple in structure, supports the crank arm by adopting the two V-shaped blocks, is convenient to clamp by pressing the crank arm by the pressing plate, and can directly carry out hole processing of the auxiliary center of the drilling jig, so that the crank arm boring operation is simple, the production efficiency is improved, and the quality of products is ensured.
Description
Technical Field
The utility model belongs to crank arm processing auxiliary devices, and particularly relates to a rotary clamp for boring and drilling a center hole of a crank arm.
Background
The crank arm used for the special vehicle is a part with high dimensional accuracy, so that centers Kong Jijia at two ends are needed to be used as a reference of the whole machining process after rough machining. Because the crank arm is a special-shaped piece, the center hole needs boring and drilling to be formed, and the rotary worktable of the boring machine is directly utilized and limited by the travel of the main shaft of the boring machine, so that the center hole cannot be added in place at one time. The overlarge deviation of the position of the central hole can cause the insufficient subsequent machining allowance, thereby being scrapped.
Disclosure of Invention
In order to solve the problems, the utility model provides the rotary clamp for boring the crank arm and drilling the center hole, which has the advantages of simple structure and low cost, is simple in crank arm boring operation, and can ensure the product quality.
The technical scheme adopted by the utility model is as follows: a rotary clamp for boring and drilling a center hole by a crank arm comprises a bottom plate, a rotary plate, two V-shaped blocks, a positioning bolt, a positioning mandrel, a large drill plate and a small drill plate; the centers of the rotating plate and the bottom plate are respectively provided with a central hole I and a central hole II, and the central holes I and the central holes II are coaxial and connected through a positioning mandrel; the rotating plate and the bottom plate are respectively provided with a bolt hole I and a bolt hole II, and the bolt hole I and the bolt hole II are connected through a positioning bolt; the two V-shaped blocks are arranged on the rotating plate in parallel, the V-shaped blocks are used for supporting the crank arms, the top of each V-shaped block is respectively provided with a pressing plate, and the pressing plates are used for pressing the crank arms; the large drill plate and the small drill plate are respectively arranged at two ends of the rotating plate, are parallel to the V-shaped blocks and are respectively provided with a drill bushing.
In the rotary clamp for boring the center hole of the crank arm, the four lifting ring screws are arranged on the rotary plate and are symmetrically arranged.
In the rotary clamp for boring the center hole by the crank arm, two side surfaces of the rotary plate are respectively provided with one handle, and the two handles are symmetrical relative to the center line pole of the center hole I; grooves are formed in the middle of the two side surfaces of the rotating plate and the bottom plate.
In the rotary clamp for boring and drilling the center hole by the crank arm, the section of the V-shaped block is a right trapezoid, the small bottom edge of the right trapezoid faces downwards, a V-shaped groove, a bolt hole and a stud hole are formed in the surface corresponding to the large bottom edge of the right trapezoid, and the V-shaped groove is arranged close to the vertical waist of the right trapezoid; the bolt hole is positioned between the V-shaped groove and the stud hole, and the bolt hole is connected with the pressing plate through a bolt; and a support stud is fixedly arranged in the stud hole.
In the rotary clamp for boring the center hole by the crank arm, the right trapezoid inclined waists of the two V-shaped blocks are arranged in a back-to-back mode.
In the rotary clamp for boring and drilling the center hole by the crank arm, the bushing is arranged in the center hole I and is made of 20 steel.
Compared with the prior art, the utility model has the beneficial effects that:
The crank arm boring device is simple in structure, the crank arm is supported by the two V-shaped blocks, the crank arm is conveniently clamped by the pressing plate, and after the clamping is completed, the hole processing of the auxiliary center of the drilling jig can be directly performed, so that the crank arm boring operation is simple, the production efficiency is improved, and the quality of products is ensured.
Drawings
Fig. 1 is a front view of the present utility model.
In the figure: 1-bottom plate, 2-rotor plate, 3-V type piece, 4-location bolt, 5-location dabber, 6-bush, 7-clamp plate, 8-bolt, 9-compression spring, 10-eye screw, 11-drill bushing, 12-bolt, 13-big bushing plate, 14-round pin, 15-screw, 16-screw, 17-little bushing plate.
Fig. 2 is a top view of the present utility model.
In the figure: 2-1-handle and 2-2-nut.
Fig. 3 is a left side view of the present utility model.
In the figure: 3-1-support.
Fig. 4 is a front view of a V-block of the present utility model.
Fig. 5 is a front view of a positioning mandrel according to the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model comprises a bottom plate 1, a rotating plate 2, a V-shaped block 3, a positioning bolt 4, a positioning mandrel 5, a bushing 6, a pressing plate 7, a pressure spring 9, a lifting screw 10, a drill bushing 11, a bolt 12, a large drill plate 13, a small drill plate 17, a handle 2-1 and a supporting stud 3-1. Four lifting eye screws 10 are arranged on the rotating plate 2, and the four lifting eye screws 10 are symmetrically arranged, so that the rotating plate 2 can be conveniently lifted.
The centers of the rotating plate 2 and the bottom plate 1 are respectively provided with a central hole I and a central hole II, two side surfaces of the rotating plate 2 are respectively provided with a handle 2-1, and the two handles 2-1 are symmetrical relative to the central line pole of the central hole I; the handle 2-1 facilitates the rotation of the rotating plate 2. The bushing 6 is arranged in the central hole I, and the bushing 6 is made of 20 steel. The bushing 6 is carburized, the carburized depth is 0.8-1.2mm, the hardness is 55-60HRC, and the bushing is arranged at the matching position of the rotating plate and the positioning mandrel, so that long-term use is ensured.
The central hole I and the central hole II are coaxial and connected through a positioning mandrel 5. The positioning mandrel 5 is arranged on the bottom plate 1 by a screw 15 and is the center of rotation of the rotating plate 2, and the positioning mandrel 5 is manufactured by 40Cr, is subjected to quenching treatment, and has high hardness and good wear resistance. The rotating plate 2 and the bottom plate 1 are respectively provided with a bolt hole I and a bolt hole II, and the bolt hole I and the bolt hole II are connected through a positioning bolt 4. Grooves are formed in the middle of the two side surfaces of the rotating plate and the bottom plate. The groove is used for the bolt on the machine tool to pass through and is fixed on the machine tool through the nut 2-2. The two V-shaped blocks 3 are arranged on the rotating plate in parallel, the V-shaped blocks 3 are used for supporting crank arms, the top of each V-shaped block is respectively provided with a pressing plate 7, and the pressing plates 7 are used for pressing the crank arms. The large drill plate 13 and the small drill plate 17 are respectively arranged at two ends of the rotating plate 2 through two bolts 12, the large drill plate 12 and the small drill plate 17 are parallel to the V-shaped block 3, and the large drill plate 13 and the small drill plate 17 are respectively provided with a drill bushing 11.
As shown in fig. 4, the cross section of the V-shaped block 3 is a right trapezoid, the face corresponding to the small bottom side of the right trapezoid faces downwards, the face corresponding to the large bottom side of the right trapezoid is provided with a V-shaped groove 31, a bolt hole 32 and a stud hole 33, and the V-shaped groove 31 is arranged close to the vertical waist of the right trapezoid; the bolt hole 32 is located between V-arrangement recess 31 and the double-screw bolt hole 33, and bolt hole 32 passes through bolt 8 and connects the clamp plate, and the cover is pressed spring 9 on the bolt 8, and the both ends of pressing spring 9 contact with clamp plate 7 and V type piece 3 respectively. And a support stud 3-1 is fixedly arranged in the stud hole. The support stud 3-1 is positioned behind the pressing plate 7 and can be adjusted in height to provide a fulcrum for the use of the pressing plate 7. The right trapezoid inclined waists of the two V-shaped blocks 3 are arranged in a back-to-back mode.
The application process of the utility model is as follows: the utility model is hung on a workbench of a boring machine, a bottom plate 1 is pre-fixed by using a machine tool standard pressing plate, a rotating plate 2 is rotated, the position of the pressing plate is determined not to interfere with the pressing plate, then a clamp is corrected by a base surface A, the utility model is fixed by a nut 2-2 and a machine tool bolt, meanwhile, the bottom plate 1 is fixed, a boring machine spindle is moved to bore a central hole at one end by a drill sleeve 11, after the boring machine spindle is moved, the nut 2-2 is loosened, a positioning bolt 4 is pulled out, the rotating plate 2 is rotated by 180 degrees by a handle 2-1, the positioning bolt 4 is inserted, the nut 2-2 is screwed, the central hole at the other end of the boring machine is bored, and then the workpiece is taken down by loosening the pressing plate 7.
Claims (6)
1. A rotary clamp for boring a center hole of a crank arm is characterized in that: the device comprises a bottom plate, a rotating plate, two V-shaped blocks, a positioning bolt, a positioning mandrel, a large drilling template and a small drilling template; the centers of the rotating plate and the bottom plate are respectively provided with a central hole I and a central hole II, and the central holes I and the central holes II are coaxial and connected through a positioning mandrel; the rotating plate and the bottom plate are respectively provided with a bolt hole I and a bolt hole II, and the bolt hole I and the bolt hole II are connected through a positioning bolt; the two V-shaped blocks are arranged on the rotating plate in parallel, the V-shaped blocks are used for supporting the crank arms, the top of each V-shaped block is respectively provided with a pressing plate, and the pressing plates are used for pressing the crank arms; the large drill plate and the small drill plate are respectively arranged at two ends of the rotating plate, are parallel to the V-shaped blocks and are respectively provided with a drill bushing.
2. The swivel clamp for boring a center hole in a crank arm of claim 1, wherein: four lifting screws are arranged on the rotating plate and are symmetrically arranged.
3. The swivel clamp for boring a center hole in a crank arm of claim 1, wherein: two handles are respectively arranged on the two side surfaces of the rotating plate, and the two handles are symmetrical relative to the central line pole of the central hole I; grooves are formed in the middle of the two side surfaces of the rotating plate and the bottom plate.
4. The swivel clamp for boring a center hole in a crank arm of claim 1, wherein: the section of the V-shaped block is a right trapezoid, the face corresponding to the small bottom edge of the right trapezoid faces downwards, a V-shaped groove, a bolt hole and a stud hole are formed in the face corresponding to the large bottom edge of the right trapezoid, and the V-shaped groove is arranged close to the vertical waist of the right trapezoid; the bolt hole is positioned between the V-shaped groove and the stud hole, and the bolt hole is connected with the pressing plate through a bolt; and a support stud is fixedly arranged in the stud hole.
5. The swivel clamp for boring a center hole in a crank arm of claim 1, wherein: the right trapezoid inclined waists of the two V-shaped blocks are arranged in a back-to-back mode.
6. The swivel clamp for boring a center hole in a crank arm of claim 1, wherein: and a lining is arranged in the central hole I, and the lining is made of 20 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322831146.8U CN220971536U (en) | 2023-10-23 | 2023-10-23 | Rotary clamp for crank arm boring and drilling center hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322831146.8U CN220971536U (en) | 2023-10-23 | 2023-10-23 | Rotary clamp for crank arm boring and drilling center hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220971536U true CN220971536U (en) | 2024-05-17 |
Family
ID=91055364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322831146.8U Active CN220971536U (en) | 2023-10-23 | 2023-10-23 | Rotary clamp for crank arm boring and drilling center hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220971536U (en) |
-
2023
- 2023-10-23 CN CN202322831146.8U patent/CN220971536U/en active Active
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| GR01 | Patent grant |