Drilling tool for annular workpiece

Abstract

The utility model provides a ring-shaped workpiece drilling tool which comprises a base, a fixing rod is arranged on the base, a movable sleeve is sleeved on the fixing rod, a plurality of limiting blocks are arranged on the base at intervals, a circular positioning groove is defined by the limiting blocks, a clamping jaw is arranged between any two adjacent limiting blocks, and the limiting blocks are arranged in the positioning groove. Connecting rods are arranged at the ends, close to the fixed rod, of the clamping jaws, a plurality of connecting blocks are arranged on the peripheral wall of the movable sleeve at intervals, kidney-shaped holes are formed in the connecting blocks respectively, the connecting rods extend into the kidney-shaped holes and can slide in the length directions of the kidney-shaped holes, and the length directions of the kidney-shaped holes are consistent with the radial direction of the fixed rod; when the movable sleeve moves in the axial direction of the fixing rod, the clamping jaws are driven to rotate, and part of the clamping jaws are driven to stretch into or retreat from the positioning grooves. The utility model solves the technical problem that the dismounting steps of taking out the drilled annular workpiece from the existing drilling tool are tedious and time-consuming, and has the technical effects of simplifying the clamping and dismounting steps of the annular workpiece and shortening the time for dismounting the annular workpiece from the tool.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a drilling tooling for circular ring workpieces. Background Technique

[0002] When drilling holes in the end face of a circular ring workpiece, a tooling fixture is usually required to fix the circular ring workpiece on a drilling machine.

[0003] The Chinese utility model patent with the publication number of CN214054466U discloses a drilling and fixing tooling for circular ring workpieces, which includes a base. A fixing rod is welded to the middle of the upper end of the base, and a screw rod is welded to the upper end of the fixing rod. A lower positioning nut and an upper positioning nut are threadedly connected to the screw rod. A pressing block is sleeved on the screw rod between the lower positioning nut and the upper positioning nut. A supporting column is welded to the middle of the upper end of the pressing block. Through holes for the screw rod to pass through are formed in the middle of the supporting column and the pressing block. The base of the above-mentioned drilling and fixing tooling for circular ring workpieces can be fixed on the drilling table of the drilling machine. The circular ring workpiece is placed on the upper end of the drilling table of the drilling machine. The fixing rod and the screw rod pass through the middle of the circular ring workpiece. The lower end face of the pressing block is pressed against the upper end of the circular ring workpiece so that the pressing block is pressed tightly on the upper end of the circular ring workpiece, preventing the workpiece from shaking during processing, improving the drilling accuracy of the workpiece, ensuring the machining quality of the workpiece, and improving the drilling efficiency.

[0004] When the circular ring workpiece needs to be removed after being clamped and drilled using the drilling and fixing tooling for circular ring workpieces disclosed in the above-mentioned utility model patent, it is necessary to first remove the upper positioning nut from the screw rod, then remove the pressing block and the gasket from the fixing rod, and finally take out the circular ring workpiece so that the fixing rod exits from the middle of the ring workpiece. Therefore, when removing the workpiece, it is necessary to disassemble multiple components from the screw rod and the fixing rod. The disassembly steps are cumbersome and time-consuming, which is not conducive to replacing the undrilled workpiece during the operation process. Summary of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a drilling tooling for circular ring workpieces, which solves the problem that the disassembly steps for removing the drilled circular ring workpiece from the drilling tooling in the prior art are cumbersome and time-consuming.

[0006] According to an embodiment of the present utility model, a drilling tooling for a circular workpiece includes a base. A vertical fixing rod is provided on the base, and a movable sleeve is sleeved on the fixing rod. The movable sleeve can move along the axial direction of the fixing rod on the fixing rod. A plurality of limiting blocks are also provided on the base at intervals. The plurality of limiting blocks enclose a circular positioning groove, and the center of the positioning groove is located on the axis of the fixing rod. Claw jaws are respectively provided between any two adjacent limiting blocks. The claw jaws are respectively rotatably connected to the adjacent two limiting blocks, and a connecting rod is provided at one end of the claw jaw close to the fixing rod. A plurality of connecting blocks are provided on the outer peripheral wall of the movable sleeve at intervals. Waist-shaped holes are respectively provided on the connecting blocks. The connecting rod extends into the waist-shaped hole, and the connecting rod can slide along the length direction of the waist-shaped hole. The length direction of the waist-shaped hole is consistent with the radial direction of the fixing rod. When the movable sleeve moves along the axial direction of the fixing rod, it drives the claw jaws to rotate and drives some of the claw jaws to extend into or withdraw from the positioning groove.

[0007] Further, a vertical threaded rod is provided at the top of the fixing rod, and a locking nut is provided on the threaded rod. A through hole for the threaded rod to pass through is provided on the movable sleeve. The locking nut is located on the side of the movable sleeve away from the fixing rod. A spring is also sleeved on the fixing rod. The opposite ends of the spring in the telescopic direction are respectively abutted against the base and the movable sleeve and press the movable sleeve against the locking nut.

[0008] Further, a first mounting hole matching with the fixing rod is provided on the movable sleeve, and the first mounting hole is communicated with the through hole.

[0009] Further, a guiding hole is provided on the base. The guiding hole is concentric with the fixing rod, and the movable sleeve is attached to the inner wall of the guiding hole. The spring is received in the guiding hole.

[0010] Further, a mounting disc is provided at one end of the fixing rod away from the threaded rod. A plurality of first bolts are provided on the mounting disc, and a plurality of first through holes for the first bolts to pass through are provided on the mounting disc at intervals. First threaded holes matching with the first bolts are provided on the base.

[0011] Further, the connecting block includes two connecting parts arranged at intervals. The waist-shaped holes are respectively provided on the two connecting parts, and the waist-shaped holes on the two connecting parts are aligned. Some of the claw jaws extend between the two connecting parts, and the opposite ends of the same connecting rod respectively extend into the waist-shaped holes on the two connecting parts.

[0012] Further, a mounting groove is provided on the base, and the mounting groove surrounds the fixing rod. The limiting blocks are respectively provided with protruding limiting parts, and the limiting parts are attached to the inner wall of the mounting groove.

[0013] Further, second bolts and second through holes for the second bolts to pass through are respectively provided on the limiting blocks, and second threaded holes mating with the second bolts are provided on the base.

[0014] Further, mounting rods are respectively provided between any two adjacent limiting blocks, and second mounting holes mating with the mounting rods are respectively provided on the clamping jaws.

[0015] Further, a protruding clamping portion is provided on the clamping jaw. When the clamping jaw rotates, the clamping portion extends into or withdraws from the positioning groove, and a buffer pad is covered on the surface of the clamping portion close to the positioning groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects: By adopting a plurality of limiting blocks spaced on the base to form a positioning groove for a circular workpiece to be processed, after the circular workpiece is placed in the positioning groove, the movement of the movable sleeve along the axial direction of the fixed rod drives each clamping jaw to rotate, so that some clamping jaws extend into the positioning groove and abut against the side wall of the circular workpiece, so as to fix the position of the circular workpiece by clamping the circular workpiece with a plurality of clamping jaws, thereby preventing the circular workpiece from loosening during the drilling process. And when it is necessary to remove the processed circular workpiece after the processing is completed, move the movable sleeve to make the clamping jaws rotate and withdraw from the positioning groove to release the circular workpiece in the positioning groove, and then the processed circular workpiece can be taken out and other circular workpieces to be processed can be put in. It solves the technical problem that the disassembly steps of taking out the circular workpiece with completed drilling from the existing drilling tooling are cumbersome and time-consuming, and produces the technical effects of simplifying the clamping and disassembly steps of the circular workpiece and shortening the time required to disassemble the circular workpiece from the tooling. Moreover, the clamping operation of the circular workpiece drilling tooling provided by the utility model is simple and convenient to use. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a circular workpiece drilling tooling according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic structural diagram of the circular workpiece drilling tooling according to an embodiment of the utility model when clamping a circular workpiece;

[0019] Figure 3 It is a partial exploded view of a circular workpiece drilling tooling according to an embodiment of the utility model;

[0020] Figure 4 It is a sectional view of the circular workpiece drilling tooling according to an embodiment of the utility model when clamping a circular workpiece;

[0021] Figure 5 It is a schematic structural diagram of a clamping jaw in a circular workpiece drilling tooling according to an embodiment of the utility model;

[0022] Figure 6 The structural schematic diagram of the movable sleeve in the drilling tooling for circular ring workpieces according to an embodiment of the present utility model.

[0023] In the above-mentioned attached drawings: 1. Base; 11. Guide hole; 12. Installation groove; 13. Second threaded hole; 2. Fixed rod; 21. Threaded rod; 22. Locking nut; 23. Spring; 24. Installation disc; 25. First bolt; 26. First through hole; 3. Movable sleeve; 31. Connection block; 32. Waist-shaped hole; 33. Through hole; 34. First installation hole; 35. Connection part; 4. Limiting block; 41. Positioning groove; 42. Limiting part; 43. Second bolt; 44. Second through hole; 45. Installation rod; 5. Claw; 51. Connecting rod; 52. Second installation hole; 53. Clamping part; 54. Buffer pad; 100. Circular ring workpiece. Specific embodiments

[0024] The technical solutions in the present utility model will be further described below with reference to the attached drawings and embodiments.

[0025] As Figures 1 to 6 shown, an embodiment of the present utility model provides a drilling tooling for circular ring workpiece 100, which is used for clamping the circular ring workpiece 100 to fix the position of the circular ring workpiece 100 on a drilling machine, so as to facilitate the drilling process on the circular ring workpiece 100.

[0026] Please refer to Figure 1 and Figure 2 , the drilling tooling for circular ring workpiece 100 includes a base 1, a vertical fixed rod 2 is provided on the base 1, a movable sleeve 3 is sleeved on the fixed rod 2 and the movable sleeve 3 can move axially along the fixed rod 2, a plurality of limiting blocks 4 are also provided on the base 1 at intervals, a positioning groove 41 surrounding the center is formed by the plurality of limiting blocks 4 and the center of the positioning groove 41 is located on the axis of the fixed rod 2, clamping claws 5 are respectively arranged in the intervals between any two adjacent limiting blocks 4, the clamping claws 5 are respectively rotatably connected with the adjacent two limiting blocks 4 and a connecting rod 51 is provided at one end of the clamping claw 5 close to the fixed rod 2, a plurality of connection blocks 31 are provided on the outer peripheral wall of the movable sleeve 3 at intervals, waist-shaped holes 32 corresponding to the connecting rods 51 one by one are respectively provided on the connection blocks 31, the connecting rods 51 respectively extend into the corresponding waist-shaped holes 32 and the connecting rods 51 can slide along the length direction of the waist-shaped holes 32, the length direction of the waist-shaped holes 32 is consistent with the radial direction of the fixed rod 2, and when the movable sleeve 3 moves axially along the fixed rod 2, it drives the clamping claws 5 to rotate and drives some of the clamping claws 5 to extend into or withdraw from the positioning groove 41.

[0027] Specifically, the operation steps for drilling the annular workpiece 100 using the annular workpiece 100 drilling tooling provided in this embodiment are as follows: First, place the annular workpiece 100 into the positioning groove 41 surrounded by the limiting blocks 4. Then, move the movable sleeve 3 along the axial direction of the fixed rod 2, so that the plurality of clamping jaws 5 rotate synchronously driven by the movable sleeve 3, and the plurality of clamping jaws 5 simultaneously extend into the positioning groove 41 and abut against the outer wall of the annular workpiece 100. At this time, the annular workpiece 100 can be fixed on the annular workpiece 100 drilling tooling by clamping the annular workpiece 100 with the plurality of clamping jaws 5, and then the annular workpiece 100 can be drilled; after drilling, move the movable sleeve 3 in the reverse axial direction of the fixed rod 2, so that the plurality of clamping jaws 5 rotate simultaneously in the reverse direction driven by the movable sleeve 3 and withdraw from the positioning groove 41. At this time, the clamping jaws 5 release the annular workpiece 100, and the processed annular workpiece 100 can be taken out and other unprocessed annular workpieces 100 can be placed. The annular workpiece 100 drilling tooling provided in this embodiment simplifies the clamping and disassembly steps of the annular workpiece 100, which is beneficial to shortening the time required for disassembling the annular workpiece 100, thereby improving the continuous operation efficiency. Moreover, the clamping operation of the annular workpiece 100 drilling tooling is simple and convenient to use.

[0028] Please refer to Figure 3 and Figure 4, in this embodiment, a vertical threaded rod 21 is provided at the top of the fixed rod 2, and a locking nut 22 is provided on the threaded rod 21. A through hole 33 for the threaded rod 21 to pass through is provided on the movable sleeve 3. The locking nut 22 is located on the side of the movable sleeve 3 away from the fixed rod 2. A spring 23 is also sleeved on the fixed rod 2. The opposite ends of the spring 23 in the telescopic direction are respectively abutted against the base 1 and the movable sleeve 3 and press the movable sleeve 3 against the locking nut 22. By providing the threaded rod 21 on the fixed rod 2 and the locking nut 22 on the threaded rod 21, the movable sleeve 3 is kept in abutment with the locking nut 22 by the elastic force provided by the spring 23. When the locking nut 22 is rotated, the locking nut 22 moves along the axial direction of the threaded rod 21. At this time, the movable sleeve 3 moves synchronously with the locking nut 22 under the drive of the spring 23, so as to realize the movement of the movable sleeve 3 along the axial direction of the fixed rod 2. When the locking nut 22 descends along the axial direction of the locking rod, the movable sleeve 3 descends and drives the clamping jaw 5 to extend into the positioning groove 41. When the locking nut 22 ascends along the axial direction of the locking rod, the movable sleeve 3 ascends under the drive of the spring 23 and drives the clamping jaw 5 to rotate and withdraw from the positioning groove 41. That is, by rotating the locking nut 22, the moving direction of the movable sleeve 3, the moving stroke of the movable sleeve 3, and the rotation angle of the clamping jaw 5 can be conveniently controlled. And through the cooperation of the locking nut 22 and the locking screw rod, the position of the movable sleeve 3 can be locked, so that the movable sleeve 3 can be kept at the position where the clamping jaw 5 clamps the annular workpiece 100 or the position where the clamping jaw 5 releases the annular workpiece 100, preventing the movable sleeve 3 from moving unexpectedly during the drilling process, resulting in the loosening of the clamping of the annular workpiece 100 by the clamping jaw 5, which is beneficial to improving the reliability of the drilling tool for the annular workpiece 100.

[0029] Specifically, a first mounting hole 34 matching with the fixed rod 2 is provided on the movable sleeve 3, and the first mounting hole 34 is communicated with the through hole 33. By the cooperation of the first mounting hole 34 provided on the movable sleeve 3 and the fixed rod 2, the moving direction of the movable sleeve 3 is restricted, preventing the movable sleeve 3 from tilting or shifting during the movement, which is beneficial to improving the stability of the drilling tool for the annular workpiece 100.

[0030] Such as Figure 3 And Figure 4As shown, a guiding hole 11 is provided on the base 1. The guiding hole 11 is concentric with the fixing rod 2, and the movable sleeve 3 is in contact with the inner wall of the guiding hole 11. The spring 23 is received in the guiding hole 11. The guiding hole 11 provided on the base 1 is used to receive the spring 23, so that the spring 23 is held between the movable sleeve 3 and the base 1, preventing the spring 23 from detaching from the movable sleeve 3 during the movement of the movable sleeve 3. Moreover, the contact between the outer wall of the movable sleeve 3 and the inner wall of the guiding hole 11 can improve the stability of the movable sleeve 3 during movement.

[0031] Specifically, an installation disk 24 is provided at one end of the fixing rod 2 away from the threaded rod 21. A plurality of first bolts 25 are provided on the installation disk 24, and a plurality of first through holes 26 for the first bolts 25 to pass through are provided on the installation disk 24 at intervals. First threaded holes matching with the first bolts 25 are provided on the base 1. By using the first bolts 25 to pass through the first through holes 26 on the installation disk 24 and cooperate with the first threaded holes on the base 1, the fixing rod 2 can be installed on the base 1, and the position of the fixing rod 2 on the base 1 can be fixed, ensuring a reliable connection between the fixing rod 2 and the base 1.

[0032] As Figure 4 、 Figure 5 and Figure 6 shown, in this embodiment, the connecting block 31 includes two connecting portions 35 arranged at intervals. Waist-shaped holes 32 are respectively provided on the two connecting portions 35, and the waist-shaped holes 32 on the two connecting portions 35 are aligned. Part of the clamping jaw 5 extends between the two connecting portions 35, and the opposite ends of the same connecting rod 51 respectively extend into the waist-shaped holes 32 on the two connecting portions 35. The connecting block 31 is arranged to include two connecting portions 35 arranged at intervals, and the aligned waist-shaped holes 32 are respectively provided on the two connecting portions 35. Part of the clamping jaw 5 extends between the two connecting portions 35 to prevent the clamping jaw 5 from shaking. Moreover, the opposite ends of the same connecting rod 51 respectively extend into the waist-shaped holes 32 on the two connecting portions 35, thereby improving the stability of the cooperation between the clamping jaw 5 and the connecting block 31, enabling the clamping jaw 5 to rotate smoothly under the drive of the movable sleeve 3.

[0033] Please refer to Figure 1 and Figure 3, an installation groove 12 is provided on the base 1, and the installation groove 12 is arranged around the fixing rod 2. The limiting blocks 4 are respectively provided with protruding limiting parts 42, and the limiting parts 42 are attached to the inner wall of the installation groove 12. By arranging the installation groove 12 on the base 1 to position the limiting blocks 4, and the limiting blocks 4 are provided with protruding limiting parts 42. After the limiting blocks 4 are placed in the installation groove 12, the limiting parts 42 are attached to the inner wall of the installation groove 12, so that the limiting blocks 4 can be positioned, which is convenient for the assembly of the drilling tooling for the annular workpiece 100.

[0034] Specifically, the limiting blocks 4 are respectively provided with second bolts 43 and second through holes 44 for the second bolts 43 to pass through, and the base 1 is provided with second threaded holes 13 that cooperate with the second bolts 43. By respectively passing the second bolts 43 through the second through holes 44 on each of the limiting blocks 4 and cooperating with the second threaded holes 13 on the base 1, each of the limiting blocks 4 can be installed on the base 1, and the position of the limiting blocks 4 on the base 1 can be fixed. In this embodiment, four limiting blocks 4 are provided on the base 1, and the four limiting blocks 4 are arranged at equal intervals along the circumference of the fixing rod 2. And the four clamping jaws 5 are respectively arranged in the intervals between the four limiting blocks 4. When the movable sleeve 3 moves, the four clamping jaws 5 respectively abut against different positions of the annular workpiece 100 to ensure that the clamping jaws 5 clamp the annular workpiece 100.

[0035] Please combine Figure 3 , Figure 4 and Figure 5 , mounting rods 45 are respectively arranged between any two adjacent limiting blocks 4, and the clamping jaws 5 are respectively provided with second mounting holes 52 that cooperate with the mounting rods 45. By arranging the mounting rods 45 between two adjacent limiting blocks 4 and arranging the second mounting holes 52 on the clamping jaws 5 to cooperate with the mounting rods 45, the clamping jaws 5 can rotate between the two limiting blocks 4 and the clamping jaws 5 can be kept between the two limiting blocks 4, improving the structural stability of the drilling tooling for the annular workpiece 100.

[0036] Specifically, the clamping jaws 5 are provided with protruding clamping parts 53. When the clamping jaws 5 rotate, the clamping parts 53 extend into or withdraw from the positioning grooves 41, and a buffer pad 54 is covered on the surface of the clamping parts 53 close to the positioning grooves 41. The clamping parts 53 arranged on the clamping jaws 5 directly contact the annular workpiece 100. A buffer pad 54 is arranged on one side of the clamping parts 53 close to the positioning grooves 41. The buffer pad 54 is made of silica gel, rubber or foam, so that the surface of the clamping parts 53 in contact with the annular workpiece 100 is soft, avoiding scratching the surface of the annular workpiece 100 by the clamping jaws 5 during the clamping process.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and all of them should be covered by the scope of the claims of the present utility model.

Claims

1. A circular workpiece drilling tool, characterized in that: The invention comprises a base, a vertical fixed rod is provided on the base and a movable sleeve is provided on the fixed rod, the movable sleeve can move along the axial direction of the fixed rod on the fixed rod, a plurality of limit blocks are also provided at intervals on the base, the plurality of limit blocks form a circular positioning groove and the center of the positioning groove is located on the axis of the fixed rod, a clamping claw is provided between any two adjacent limit blocks, the clamping claw is rotatably connected with two adjacent limit blocks respectively and a connecting rod is provided at one end of the clamping claw close to the fixed rod, a plurality of connecting blocks are provided at intervals on the outer peripheral wall of the movable sleeve, waist-shaped holes are respectively provided on the connecting blocks, the connecting rod extends into the waist-shaped hole and the connecting rod can slide along the length direction of the waist-shaped hole, the length direction of the waist-shaped hole is consistent with the radial direction of the fixed rod, and when the movable sleeve moves along the axial direction of the fixed rod, the clamping claw is driven to rotate and drives part of the clamping claw to extend into or exit the positioning groove.

2. A circular workpiece drilling tool as claimed in claim 1, characterized in that: A vertical threaded rod is provided on the top of the fixed rod and a locking nut is provided on the threaded rod. A through hole is provided on the movable sleeve for the threaded rod to pass through. The locking nut is located on the side of the movable sleeve away from the fixed rod. A spring is also provided on the fixed rod. The opposite ends of the spring in the expansion and contraction direction respectively abut against the base and the movable sleeve and press the movable sleeve onto the locking nut.

3. A circular workpiece drilling tool as claimed in claim 2, characterized in that: The movable sleeve is provided with a first mounting hole matched with the fixing rod, and the first mounting hole is communicated with the through hole.

4. A circular workpiece drilling tool as claimed in claim 2, characterized in that: The base is provided with a guide hole, the guide hole is arranged concentrically with the fixing rod, the movable sleeve is in contact with the inner wall of the guide hole, and the spring is accommodated in the guide hole.

5. The circular workpiece drilling tool as claimed in claim 2, characterized in that: A mounting plate is provided at one end of the fixing rod away from the threaded rod, a plurality of first bolts are provided on the mounting plate, and a plurality of first through holes for the first bolts to pass through are provided at intervals on the mounting plate, and a first threaded hole matching with the first bolt is provided on the base.

6. The circular workpiece drilling tool as claimed in claim 1, characterized in that: The connecting block includes two connecting parts arranged at an interval, the two connecting parts are respectively provided with waist-shaped holes and the waist-shaped holes on the two connecting parts are aligned, part of the clamping claws extend between the two connecting parts and the opposite ends of the same connecting rod respectively extend into the waist-shaped holes on the two connecting parts.

7. The circular workpiece drilling tool as claimed in claim 1, characterized in that: The base is provided with a mounting groove and the mounting groove is arranged around the fixing rod. The limiting blocks are respectively provided with protruding limiting parts and the limiting parts are fitted with the inner wall of the mounting groove.

8. The circular workpiece drilling tool as claimed in claim 1, characterized in that: The limiting blocks are respectively provided with second bolts and second through holes for the second bolts to pass through, and the base is provided with second threaded holes matched with the second bolts.

9. The circular workpiece drilling tool according to claim 1, characterized in that: A mounting rod is respectively provided between any two adjacent limit blocks, and a second mounting hole matching with the mounting rod is respectively provided on the clamping jaws.

10. The circular workpiece drilling tool according to claim 1, characterized in that: The clamping jaw is provided with a protruding clamping portion, which extends into or withdraws from the positioning groove when the clamping jaw rotates, and a surface of the clamping portion close to the positioning groove is covered with a buffer pad.

Images