Flange part counter sinking tool with high universality

Abstract

The utility model discloses a flange part countersinking tool with high universality. The clamping device comprises a base, a chuck base rotationally arranged on the base, and a plurality of clamping jaws which are arranged on the chuck base in an equal-angle radial telescopic mode and are used for positioning a flange. The hoop mechanism is arranged on the periphery of the lower end of the chuck base in a sleeving mode and limits rotation of the chuck base, and the limiting bottom plate is arranged at the bottom of the chuck base and limits axial movement of the chuck base. A sliding groove is formed in the chuck base in the radial direction, and the clamping jaws are arranged in the sliding groove in a sliding mode. The hoop mechanism comprises a left hoop body, a right hoop body and a locking module which enables the left hoop body and the right hoop body to be locked or opened. According to the utility model, counter sinking operation can be carried out on any position of the periphery of the flange, the device can adapt to flanges with different diameters, the processing efficiency is higher, and the universality is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of flange processing, and particularly relates to a counterboring tooling for flange parts with high versatility.

Background Art

[0002] The circumferential holes of flange parts are generally formed by counterboring after casting reserved holes. The counterboring process is usually carried out on a special tooling by a numerical control machine tool. Since the special tooling not only has a high cost but also poor versatility, the production cost of flange parts is relatively high. Therefore, it is desired to design a counterboring tooling with a simple structure and high versatility to replace the special tooling.

[0003] A counterboring positioning tooling for an automotive drive shaft flange fork disclosed in the Chinese patent authorization announcement CN 218396960 U includes a base, a positioning seat fixedly arranged at the center position of the upper surface, and a flange fork arranged above the positioning seat; a rotary cylinder, with a slider fixedly arranged at the bottom, and the slider is slidably arranged inside the base; a fixing plate fixedly arranged on one side of the slider, and a pull rod is inserted into the fixing plate. In this solution, rotary cylinders are arranged on both sides of the outer circumference of the flange fork. The rotary cylinders drive the fixed rods to move downward to fix the flange fork, and then counterboring processing is carried out on the flange fork. The structures for fixing the flange fork are symmetrically arranged on the outer circumference of the flange fork. On the one hand, the entire tooling occupies a large space, which is not conducive to the layout of the equipment processing stations. On the other hand, the structures for fixing the flange fork are located on the upper end surface and the outer circumference of the flange fork, which will interfere with the processing process of the counterboring head.

[0004] Therefore, it is necessary to provide a counterboring tooling for flange parts with high versatility to solve the above technical problems.

Content of the Utility Model

[0005] The main purpose of the utility model is to provide a counterboring tooling for flange parts with high versatility, which can perform counterboring operations at any position on the outer circumference of the flange, and can adapt to flanges with different diameters, with higher processing efficiency and better versatility.

[0006] The present utility model realizes the above object through the following technical solutions: A counterboring tooling for flange parts with high versatility, which includes a base, a chuck base rotatably arranged on the base, a plurality of chucks arranged on the chuck base with equal-angle radial expansion and used for positioning the flange, a hoop mechanism sleeved on the outer periphery of the lower end of the chuck base and used for restricting the rotation of the chuck base, and a limiting bottom plate arranged at the bottom of the chuck base and used for restricting the axial movement of the chuck base; a chute is arranged on the chuck base along the radial direction, and the chuck is slidably arranged in the chute; the hoop mechanism includes a left hoop body, a right hoop body, and a locking module for locking or opening the left hoop body and the right hoop body. When the locking module is locked, the left hoop body and the right hoop body can simultaneously hold the outer periphery of the chuck base to restrict the rotation of the chuck base.

[0007] Further, the chuck base includes a chuck body for installing a plurality of the chucks and a positioning base for installing the chuck body, and the chuck body and the positioning base are fixedly installed through a first bolt.

[0008] Further, the lower surface of the positioning base abuts against the upper end of the base. An installation through hole is arranged in the middle of the base, and a shaft core protruding from the lower surface and extending into the installation through hole is arranged in the middle of the positioning base. The positioning base is rotatably arranged on the base through a thrust ball bearing. The thrust ball bearing is sleeved on the outer periphery of the shaft core, and a first annular groove for accommodating the thrust ball bearing is arranged at the upper end of the installation through hole.

[0009] Further, a plurality of positioning steps extending from the center of the chuck base to the outer periphery are arranged on each chuck. The positioning steps include a horizontal plane for positioning the bottom end face of the flange and a vertical plane for positioning the outer wall of the lower end of the flange.

[0010] Further, the limiting bottom plate is fixedly installed at the bottom of the shaft core through a second bolt, and a second annular groove for cooperating with the limiting bottom plate is arranged at the lower end of the installation through hole.

[0011] Further, the locking module includes a left locking block fixed on the left hoop body, a right locking block fixed on the right hoop body, a locking component arranged at one end of the left locking block and the right locking block and used for locking the left locking block and the right locking block, and a driving handle for driving the locking component to lock or unlock.

[0012] Further, the left locking block and the right locking block are symmetrically arranged left and right and have an L-shaped structure. The left locking block and the right locking block both include a first installation end installed and fixed with the hoop body and a second installation end protruding from the outer periphery of the hoop body and used for installing the locking component.

[0013] Further, the locking assembly includes a tension screw movably arranged on the two second mounting ends and a nut screwed on one end of the tension screw, and the driving handle is rotatably arranged on the other end of the tension screw through a rotating shaft.

[0014] Further, the driving handle includes a manual adjustment end and a driving end for driving the locking assembly to lock or unlock, and the driving end includes two cams arranged at the upper and lower ends of the rotating shaft, and both of the two cams are eccentrically arranged on the rotating shaft.

[0015] Further, an arc-shaped pressing block is sleeved on the tension screw between the cam and the second mounting end, and one end of the arc-shaped pressing block abuts against the outer circumference of the cam and the other end abuts against the second mounting end.

[0016] Compared with the prior art, the beneficial effects of the reaming tool for flange parts with high versatility of the present utility model are as follows:

[0017] (1) The positioning base is rotatably arranged on the base through a thrust ball bearing, and the positioning base can rotate 360°. When the flange is positioned on the chuck, the chuck base can be rotated to perform reaming operations on any position of the outer circumference of the flange, with strong versatility;

[0018] (2) When the flange is positioned on the chuck and the position to be reamed is determined, the rotation of the chuck base is restricted by the method of tightly clamping the chuck base through the provided hoop mechanism, thereby restricting the rotation of the flange. Moreover, the provided limit bottom plate can restrict the axial movement of the chuck base, thereby positioning the flange on the chuck base for reaming operations; and the provided hoop mechanism is sleeved on the outer circumference of the chuck base, with a simple structure and extremely small occupied space, and the operation methods of locking and unlocking are simple.

Description of the Drawings

[0019] Figure 1 It is a schematic three-dimensional structure diagram of the reaming tool for flange parts with high versatility according to an embodiment of the present utility model;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the reaming tool for flange parts with high versatility according to an embodiment of the present utility model;

[0021] Figure 3 It is a schematic three-dimensional structure diagram of the base and the hoop mechanism according to an embodiment of the present utility model;

[0022] Figure 4 It is a schematic three-dimensional structure diagram of the locking module according to an embodiment of the present utility model;

[0023] The numbers in the figure represent:

[0024] 100 - Reaming tool for flange parts with high versatility;

[0025] 1 - Base, 12 - First annular groove, 13 - Second annular groove;

[0026] 2 - Chuck base, 21 - Chuck body, 211 - Driving hole, 22 - Positioning base, 221 - Axle core, 23 - Slide groove;

[0027] 3 - Chuck jaw, 31 - Positioning step, 311 - Horizontal plane, 312 - Vertical plane;

[0028] 4 - Hoop mechanism, 41 - Left hoop body, 42 - Right hoop body, 43 - Locking module, 431 - Left locking block, 4311 - First mounting end, 4312 - Second mounting end, 432 - Right locking block, 433 - Locking component, 4331 - Tension screw, 4332 - Nut, 434 - Driving handle, 4341 - Manual adjustment end, 4342 - Driving end, 435 - Arc-shaped pressing block, 436 - Rotating shaft;

[0029] 5 - Limit bottom plate; 6 - First bolt; 7 - Thrust ball bearing; 8 - Second bolt.

Specific implementation manner

[0030] Please refer to Figures 1 - 4 , in this embodiment, it is a countersinking tool for flange parts with high versatility. The countersinking tool 100 for flange parts with high versatility includes a base 1, a chuck base 2 rotatably arranged on the base 1, a plurality of chuck jaws 3 arranged on the chuck base 2 at equal angles and radially telescoping to position the flange, a hoop mechanism 4 sleeved on the outer periphery of the lower end of the chuck base 2 to limit the rotation of the chuck base 2, and a limit bottom plate 5 arranged at the bottom of the chuck base 2 to limit the axial movement of the chuck base 2; a slide groove 23 is arranged radially on the chuck base 2, and the chuck jaws 3 are slidably arranged in the slide groove 23.

[0031] The chuck base 2 includes a chuck body 21 at the upper end for installing a plurality of chuck jaws 3 and a positioning base 22 at the lower end for installing and fixing the chuck body 21. The chuck body 21 and the positioning base 22 are fixedly installed through a first bolt 6.

[0032] A driving hole 211 for inserting a chuck jaw driving member is arranged on the outer periphery of the chuck body 21. When the chuck jaw driving member is inserted into the driving hole 211, it drives the gear to rotate, thereby driving a plurality of chuck jaws 3 to approach or move away from the center of the chuck body 21 simultaneously, and can adapt to flanges with different diameters, with high adaptability. The chuck jaw driving member can be manually driven, pneumatically driven or other driving methods, which are not limited here.

[0033] The lower surface of the positioning base 22 abuts against the upper end of the base 1. An installation through hole is arranged in the middle of the base 1, and an axle core 221 protruding from the lower surface and extending into the installation through hole is arranged in the middle of the positioning base 22.

[0034] The positioning base 22 is rotatably arranged on the base 1 through a thrust ball bearing 7, and the thrust ball bearing 7 is sleeved on the outer periphery of the shaft core 221. A first annular groove 12 for accommodating the thrust ball bearing 7 is provided at the upper end of the mounting through hole. The shape of the first annular groove 12 is in imitation of the shape of the thrust ball bearing 7, so that the first annular groove 12 can just accommodate the thrust ball bearing 7. The inner wall of the thrust ball bearing 7 abuts against the side wall of the shaft core 221. When the chuck base 2 is rotated to drive the shaft core 221 to rotate, the thrust ball bearing 7 can be driven to rotate. The arranged thrust ball bearing 7 can make the chuck base 2 operate smoothly and flexibly, and can limit the position of the chuck base 2. When there is mechanical loss and the load changes, the chuck base 2 can still maintain its original position.

[0035] In this embodiment, three clamping jaws 3 are provided, and in other embodiments, the number of clamping jaws can be set according to actual situations.

[0036] A plurality of positioning steps 31 extending from the center of the chuck base 2 to the outer periphery are provided on each clamping jaw 3. The heights of the plurality of positioning steps 31 on each clamping jaw 3 increase or decrease in sequence from the center of the chuck base 2 to the outer periphery. During operation, it can be selected according to the actual situation and is not limited here. The positioning step 31 includes a horizontal surface 311 on the bottom end face of the positioning flange and a vertical surface 312 on the outer wall of the lower end of the positioning flange. When the flange is positioned on the clamping jaw 3, the end face of the bottom of the flange abuts against the horizontal surface 311 of the positioning step 31, and at the same time, the outer wall of the lower end of the flange abuts against the vertical surface 312 of the positioning step 31. The arranged plurality of clamping jaws 3 can simultaneously clamp and position the flange, which is convenient for counterboring the outer periphery of the flange. A plurality of positioning steps 31 extending from the center of the chuck base 2 to the outer periphery are provided on each clamping jaw 3, which can realize the positioning of flanges with various diameters, and the processing efficiency is higher and the versatility is better.

[0037] The limit bottom plate 5 is fixedly installed at the bottom of the shaft core 221 through a second bolt 8. A second annular groove 13 for cooperating with the limit bottom plate 5 is provided at the lower end of the mounting through hole. The arranged second annular groove 13 can limit the upward movement of the chuck base 2, and the lower surface of the positioning base 22 abuts against the upper surface of the base 1. Therefore, the chuck base 2 is restricted up and down and cannot move in the axial direction. When the flange is positioned on the clamping jaw 3 of the chuck base 2, the axial movement of the flange can be restricted.

[0038] The hoop mechanism 4 includes a left hoop body 41, a right hoop body 42, and a pair of locking modules 43 respectively arranged at both ends of the left hoop body 41 and the right hoop body 42 to lock or open the left hoop body 41 and the right hoop body 42. The left hoop body 41 and the right hoop body 42 enclose a circular space for accommodating the chuck base 2 through the locking modules 43.

[0039] The left hoop body 41 and the right hoop body 42 have the same structure and are both semi-circular structures. The left hoop body 41 and the right hoop body 42 are both made of metal and are in a sheet structure with high elasticity.

[0040] The locking module 43 includes a left locking block 431 fixed on the left hoop body 41, a right locking block 432 fixed on the right hoop body 42, a locking component 433 arranged at one end of the left locking block 431 and the right locking block 432 for locking the left locking block 431 and the right locking block 432, and a driving handle 434 for driving the locking component 433 to lock or unlock.

[0041] The left locking block 431 and the right locking block 432 are symmetrically arranged left and right and are in an L-shaped structure. The left locking block 431 and the right locking block 432 both include a first mounting end 4311 for mounting and fixing with the hoop body and a second mounting end 4312 protruding from the outer periphery of the hoop body for mounting the locking component 433. The two second mounting ends 4312 of the left locking block 431 and the right locking block 432 are arranged opposite to each other left and right and are both provided with mounting holes for the locking component 433 to pass through.

[0042] The locking component 433 includes a tension screw 4331 movably arranged on the two second mounting ends 4312 of the left locking block 431 and the right locking block 432, and a nut 4332 screwed on one end of the tension screw 4331. The driving handle 434 is eccentrically rotated on the other end of the tension screw 4331 through a rotating shaft 436, and the rotating shaft 436 is arranged at the other end of the tension screw 4331.

[0043] The driving handle 434 includes a manual adjustment end 4341 and a driving end 4342 for locking or unlocking the driving locking assembly 43. The driving end 4342 includes two cams disposed at the upper and lower ends of the rotating shaft 436. Both cams are eccentrically disposed on the rotating shaft 436. An arc-shaped pressing block 435 is sleeved on the tension screw 4331 between the cam of the driving handle 434 and the second mounting end 4312. One end of the arc-shaped pressing block 435 abuts against the outer circumferences of the two cams of the driving end 4342, and the other end abuts against the second mounting end 4312. One end of the arc-shaped pressing block 435 is configured to be in imitation of the outer circumference of the cam of the driving end 4342. When the driving handle 434 is rotated outwardly with respect to the chuck base 2, since the cam is eccentrically disposed on the rotating shaft 436, the cam presses the arc-shaped pressing block 435, thereby squeezing the left locking block 431 to the right. At the same time, the driving handle 434 pulls the tension screw 4331 to the left, so that the right locking block 432 moves to the left, causing the left locking block 431 and the right locking block 432 to approach and lock each other, thereby realizing the locking of the left hoop body 41 and the right hoop body 42. At this time, the left hoop body 41 and the right hoop body 42 tightly hold the lower end of the chuck base 2 to restrict the rotation of the chuck base 2, and the locking operation method is simple.

[0044] When applying the high-versatility flange part countersinking tooling 100 provided by this solution, when a flange is placed on the chuck 3 manually or by a manipulator, the end face at the bottom of the flange abuts against the horizontal plane 311 of the positioning step 31, and at the same time, the outer wall at the lower end of the flange abuts against the vertical plane 312 of the positioning step 31. The chuck driving member is inserted into the driving hole 211 to drive the gear to rotate, thereby driving a plurality of chucks 3 to simultaneously clamp and position the flange. The chuck base 2 is rotated so that the position of the flange to be countersunk is aligned with the countersinking drill. The driving handle 434 is rotated outwardly with respect to the chuck base 2, and the rotation angle is preferably 90°. The cam of the driving handle 434 presses the arc-shaped pressing block 435, thereby squeezing the left locking block 431 to the right. At the same time, the driving handle 434 pulls the tension screw 4331 to the left, so that the right locking block 432 moves to the left, causing the left locking block 431 and the right locking block 432 to approach and lock each other, thereby realizing the locking of the left hoop body 41 and the right hoop body 42. At this time, the left hoop body 41 and the right hoop body 42 tightly hold the lower end of the chuck base 2 to restrict the rotation of the chuck base 2, ensuring accurate positioning of the flange and alignment of the position to be countersunk with the countersinking drill. After the countersinking is completed, the driving handle 434 is rotated inwardly with respect to the chuck base 2 to unlock the left hoop body 41 and the right hoop body 42. The chuck base 2 is rotated so that the position of the flange for the next countersinking is aligned with the countersinking drill, and the above steps are repeated for the next countersinking operation.

[0045] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A flange part countersinking tool with high versatility, characterized by: The invention comprises a base, a chuck base rotatably arranged on the base, a plurality of claws which are radially telescopically arranged on the chuck base at equal angles and have positioning flanges, a clamping mechanism which is sleeved on the outer periphery of the lower end of the chuck base and limits the rotation of the chuck base, and a limiting base plate which is arranged at the bottom of the chuck base and limits the axial movement of the chuck base; a slide groove is radially arranged on the chuck base, and the claws are slidably arranged in the slide groove; the clamping mechanism comprises a left clamping body, a right clamping body and a locking module which locks or opens the left clamping body and the right clamping body, and when the locking module is locked, the left clamping body and the right clamping body can simultaneously clamp the outer periphery of the chuck base to limit the rotation of the chuck base.

2. A flange part countersinking tool with high versatility as claimed in claim 1, characterized in that: The chuck base comprises a chuck body on which a plurality of the chuck claws are mounted and a positioning base on which the chuck body is mounted. The chuck body and the positioning base are fixedly mounted by a first bolt.

3. A flange part countersinking tool with high versatility as claimed in claim 2, characterized in that: The lower surface of the positioning base abuts against the upper end of the base, a mounting through hole is provided in the middle of the base, an axis core is provided in the middle of the positioning base which protrudes from the lower surface and extends into the mounting through hole, the positioning base is rotatably arranged on the base through a thrust ball bearing, the thrust ball bearing is sleeved on the outer periphery of the axis core, and a first annular groove for accommodating the thrust ball bearing is provided at the upper end of the mounting through hole.

4. A flange part countersinking tool with high versatility as claimed in claim 1, characterized in that: Each of the clamping claws is provided with a plurality of positioning steps extending from the center to the periphery of the chuck base, and the positioning steps include a horizontal surface of the bottom end surface of the positioning flange and a vertical surface of the outer wall of the lower end of the positioning flange.

5. A flange part countersinking tool with high versatility as claimed in claim 3, characterized in that: The limiting bottom plate is fixedly mounted on the bottom of the shaft core by a second bolt, and a second annular groove which is mounted in cooperation with the limiting bottom plate is provided at the lower end of the mounting through hole.

6. A flange part countersinking tool with high versatility as claimed in claim 1, characterized in that: The locking module includes a left locking block fixed on the left clamp body, a right locking block fixed on the right clamp body, a locking assembly arranged at one end of the left locking block and the right locking block and used to lock the left locking block and the right locking block, and a driving handle for driving the locking assembly to lock or unlock.

7. A flange part countersinking tool with high versatility as claimed in claim 6, characterized in that: The left locking block and the right locking block are symmetrically arranged and have an L-shaped structure. The left locking block and the right locking block each include a first mounting end fixed to the clamp body and a second mounting end protruding from the periphery of the clamp body and used to install the locking assembly.

8. A flange part countersinking tool with high versatility as claimed in claim 7, characterized in that: The locking assembly includes a tightening screw movably arranged on the two second mounting ends and a nut tightened at one end of the tightening screw, and the driving handle is rotatably arranged at the other end of the tightening screw via a rotating shaft.

9. A flange part countersinking tool with high versatility as claimed in claim 8, characterized in that: The driving handle includes a manual adjustment end and a driving end for driving the locking assembly to lock or unlock, and the driving end includes two cams arranged at the upper and lower ends of the rotating shaft, and the two cams are eccentrically arranged on the rotating shaft.

10. A flange part countersinking tool with high versatility as claimed in claim 9, characterized in that: An arc-shaped pressing block is sleeved on the tensioning screw between the cam and the second mounting end, one end of the arc-shaped pressing block abuts against the outer periphery of the cam, and the other end abuts against the second mounting end.

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