A gun drill grinding positioning mechanism

Abstract

This invention provides a gun drill grinding positioning mechanism, belonging to the field of gun drill machining technology. It solves the problem in existing gun drill grinding processes where the gun drill is simply installed into a positioning shaft, which supports the shank. However, the support length of the positioning shaft is relatively short, leading to poor rigidity and vibration at the tip of the longer gun drill during grinding, thus affecting grinding accuracy and efficiency. This gun drill grinding positioning mechanism includes a fixed base and a servo headstock mounted on the fixed base. A gun drill positioning unit is mounted on the servo headstock, and a gun drill support unit is mounted on the fixed base. An adjustment unit is provided between the positioning unit and the support unit. This invention improves the rigidity and stability of the gun drill during grinding, resulting in better positioning and improved grinding accuracy and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of gun drill processing technology, and relates to a grinding positioning mechanism, particularly a gun drill grinding positioning mechanism. Background Technology

[0002] Gun drills are a type of deep hole machining tool with external chip removal. Their unique design and manufacturing process give them significant advantages in the field of deep hole machining. Gun drill grinding is an indispensable part of deep hole machining, and its importance lies in maintaining the sharpness and machining accuracy of the gun drill.

[0003] In the current market, gun drill grinding simply involves mounting the gun drill inside a positioning shaft, which supports the shank of the gun drill. However, the support length provided by the positioning shaft is relatively short. When using a longer gun drill, the front end of the drill cannot be effectively supported, resulting in poor rigidity and vibration during grinding. This affects the accuracy and efficiency of the grinding process. Therefore, designing a gun drill grinding positioning mechanism is of great significance. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a gun drill grinding positioning mechanism.

[0005] The objective of this invention can be achieved through the following technical solution: a gun drill grinding positioning mechanism, including a fixed base and a servo headstock disposed on the fixed base, wherein a gun drill positioning unit is disposed on the servo headstock, a gun drill support unit is disposed on the fixed base, and an adjustment unit is disposed between the gun drill positioning unit and the gun drill support unit.

[0006] The gun drill positioning unit includes a positioning shaft mounted on a servo headstock, a placement block mounted on the positioning shaft, a placement groove mounted on the placement block, a positioning shell mounted at the bottom of the positioning shaft, a connecting rod slidably mounted inside the positioning shell, and the top end of the connecting rod passing through the positioning shaft and the placement block, and a pressure block fixedly connected to the top end of the connecting rod.

[0007] The drill support unit includes a lifting cylinder mounted on a fixed base, a lifting block mounted on the lifting cylinder, a support block mounted on the top of the lifting block, and a V-shaped groove formed on the top of the support block.

[0008] In the above-mentioned gun drill grinding positioning mechanism, the pressure block has a movable groove, the movable groove has a top block, a spring is provided between the top block and the movable groove, the movable groove has a limiting post for limiting the spring, and a friction pad is fixedly connected to the outside of the top block.

[0009] In the aforementioned gun drill grinding positioning mechanism, sliders are fixedly connected to both sides of the top block, and a sliding groove is provided in the movable groove to cooperate with the sliders.

[0010] In the aforementioned gun drill grinding positioning mechanism, the control unit includes a movable shell fixedly mounted on a fixed base. A movable cavity is provided on one side of the movable shell, and a positioning rod is fixedly mounted inside the movable cavity. An adjustment rod is rotatably connected to the surface of the positioning rod.

[0011] In the aforementioned gun drill grinding positioning mechanism, a fixed block is fixedly connected to one side of the lifting block and hinged to the adjusting rod, and the fixed block is located in the movable cavity, where a limiting block is provided to limit the rotation of the adjusting rod.

[0012] In the aforementioned gun drill grinding positioning mechanism, a control rod hinged to an adjusting rod is slidably disposed inside the movable housing, and the top of the control rod is fixedly connected to the bottom of the connecting rod.

[0013] In the aforementioned gun drill grinding positioning mechanism, the top of the lifting block is provided with an installation groove for installing a support block, one side of the support block is provided with a slot, the inner wall of the lifting block is provided with a locking block that cooperates with the slot, and a spring is provided between the locking block and the inner wall of the lifting block.

[0014] In the aforementioned gun drill grinding positioning mechanism, a pull rod is slidably provided on the inner wall of the lifting block and fixedly connected to the locking block. One end of the pull rod is fixedly connected to a round block, and the round block is located on the outside of the lifting block.

[0015] Compared with existing technologies, this gun drill grinding positioning mechanism supports the front end of the gun drill by setting a gun drill support unit, which can improve the rigidity of the gun drill during grinding. By setting the gun drill positioning unit and the gun drill support unit to work together, while supporting the gun drill, the pressure block can clamp and position the shank of the gun drill, improving the stability of the gun drill during grinding, making the positioning effect of the gun drill better, and improving the accuracy and efficiency of the gun drill grinding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the positioning mechanism for the gun drill grinding.

[0017] Figure 2 This is a cross-sectional schematic diagram of the positioning mechanism for the gun drill grinding.

[0018] Figure 3 This is a cross-sectional schematic diagram of the pressure block of the positioning mechanism for the gun drill grinding.

[0019] Figure 4 This is the positioning mechanism for gun drilling and grinding. Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure 5 This is the positioning mechanism for gun drilling and grinding. Figure 3 Enlarged diagram of point B in the middle.

[0021] Figure 6 This is an exploded view of the support block and lifting block of the positioning mechanism for this gun drill grinding.

[0022] In the diagram: 1. Fixed base; 2. Servo head frame; 3. Gun drill positioning unit; 301. Positioning shaft; 302. Placement block; 303. Placement groove; 304. Positioning shell; 305. Connecting rod; 306. Pressure block; 4. Gun drill support unit; 401. Lifting cylinder; 402. Lifting block; 403. Support block; 404. V-groove; 5. Control unit; 501. Movable shell; 502. Movable cavity; 503. Positioning rod; 504. Adjusting rod; 505. Fixed block; 506. Control rod; 6. Movable groove; 7. Top block; 8. Spring 1; 9. Limiting post; 10. Friction pad; 11. Slider; 12. Slide groove; 13. Limiting block; 14. Mounting groove; 15. Slot; 16. Locking block; 17. Spring 2; 18. Pull rod; 19. Round block. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1 , 2As shown in Figures 3, 4, 5, and 6, this gun drill grinding positioning mechanism includes a fixed base 1 and a servo headstock 2 mounted on the fixed base 1. A gun drill positioning unit 3 is mounted on the servo headstock 2, and a gun drill support unit 4 is mounted on the fixed base 1. An adjustment unit 5 is provided between the gun drill positioning unit 3 and the gun drill support unit 4. The gun drill positioning unit 3 includes a positioning shaft 301 mounted on the servo headstock 2. A placement block 302 is mounted on the positioning shaft 301, and a placement groove 303 is provided on the placement block 302. A positioning shell 304 is located at the bottom of the positioning shaft 301, and a connecting rod 305 is slidably mounted inside the positioning shell 304. The top end of the connecting rod 305 passes through the positioning shaft 301 and the placement block 302. A pressure block 306 is fixedly connected to the top end of the connecting rod 305 to hold the part to be ground. The gun drill shank is placed into the placement groove 303 on the placement block 302, and the gun drill is clamped and positioned by the pressure block 306. Both the pressure block 306 and the placement groove 303 have a certain slope, and the two cooperate to clamp and position the gun drill. The movement of the pressure block 306 is controlled by the connecting rod 305. The gun drill support unit 4 includes a lifting cylinder 401 set on the fixed base 1. The lifting cylinder 401 is provided with a lifting block 402, and the top of the lifting block 402 is provided with a support block 403. The top of the support block 403 is provided with a V-shaped groove 404. After the gun drill is placed, the lifting cylinder 401 is activated to push the lifting block 402 to move, so that the support block 403 supports the front end of the gun drill. The V-shaped groove 404 on the top of the support block 403 can be used to support gun drills of different diameters.

[0025] Preferably, the pressure block 306 has a movable groove 6, a top block 7 is provided in the movable groove 6, a spring 8 is provided between the top block 7 and the movable groove 6, and a limiting post 9 for limiting the spring 8 is provided in the movable groove 6. A friction pad 10 is fixedly connected to the outside of the top block 7. When the pressure block 306 clamps and positions the gun drill, the friction pad 10 contacts the gun drill, making it less likely for the gun drill to deflect. When the spring 8 is compressed, it can generate a reaction force, which makes the clamping force on the gun drill greater and the positioning effect better. In addition, the top block 7 is movable and can be used in conjunction with the support block 403, making it more suitable for positioning gun drills of different diameters.

[0026] Preferably, sliders 11 are fixedly connected to both sides of the top block 7, and a sliding groove 12 is provided in the movable groove 6 to cooperate with the sliders 11. The sliders 11 and the sliding groove 12 can limit the movement of the top block 7.

[0027] Preferably, the control unit 5 includes a movable shell 501 fixedly mounted on the fixed base 1. A movable cavity 502 is opened on one side of the movable shell 501. A positioning rod 503 is fixedly mounted in the movable cavity 502. An adjusting rod 504 is rotatably connected to the surface of the positioning rod 503. When the lifting cylinder 401 is activated to move the lifting block 402, the control unit 5 can drive the pressure block 306 to move, thereby achieving the support block 403 supporting the front end of the gun drill while the pressure block 306 clamps and positions the shank of the gun drill.

[0028] Preferably, a fixing block 505 is fixedly connected to one side of the lifting block 402 and hinged to the adjusting rod 504, and the fixing block 505 is located in the movable cavity 502. A limiting block 13 is provided in the movable cavity 502 to limit the rotation of the adjusting rod 504.

[0029] Preferably, a control rod 506 hinged to the adjusting rod 504 is slidably disposed inside the movable housing 501. The top of the control rod 506 is fixedly connected to the bottom of the connecting rod 305. When the lifting block 402 moves upward, the adjusting rod 504 rotates around the positioning rod 503 through the connection between the fixed block 505 and the adjusting rod 504. The rotation of the adjusting rod 504 drives the control rod 506 to move downward, which in turn drives the connecting rod 305 connected to the control rod 506 to move downward, so that the pressure block 306 clamps and positions the gun drill downward.

[0030] Preferably, the top of the lifting block 402 is provided with an installation groove 14 for installing the support block 403, the support block 403 is provided with a slot 15 on one side, the inner wall of the lifting block 402 is provided with a locking block 16 that cooperates with the slot 15, and a spring 17 is provided between the locking block 16 and the inner wall of the lifting block 402.

[0031] Preferably, the inner wall of the lifting block 402 is slidably provided with a pull rod 18 that is fixedly connected to the locking block 16. One end of the pull rod 18 is fixedly connected to a round block 19, and the round block 19 is located on the outside of the lifting block 402. Pulling the round block 19 can control the movement of the locking block 16 through the pull rod 18. The support block 403 is installed in the mounting groove 14 and is fixed by the locking block 16 engaging in the locking groove 15, so that the support block 403 can be disassembled and replaced, and the support block 403 has a higher fit with the gun drill and a better support effect.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0033] Although this document frequently uses terms such as fixed base 1, servo headstock 2, drill positioning unit 3, positioning shaft 301, placement block 302, placement groove 303, positioning shell 304, connecting rod 305, pressure block 306, drill support unit 4, lifting cylinder 401, lifting block 402, support block 403, V-groove 404, control unit 5, movable shell 501, movable cavity 502, positioning rod 503, adjusting rod 504, fixed block 505, control rod 506, movable groove 6, top block 7, spring one 8, limiting post 9, friction pad 10, slider 11, sliding groove 12, limiting block 13, mounting groove 14, slot 15, locking block 16, spring two 17, pull rod 18, and round block 19, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A gun drill grinding positioning mechanism, comprising a fixed base (1) and a servo headstock (2) disposed on the fixed base (1), characterized in that, The servo headstock (2) is provided with a drill positioning unit (3), the fixed base (1) is provided with a drill support unit (4), and an adjustment unit (5) is provided between the drill positioning unit (3) and the drill support unit (4); the drill positioning unit (3) includes a positioning shaft (301) provided on the servo headstock (2), a placement block (302) provided on the positioning shaft (301), a placement groove (303) provided on the placement block (302), and a positioning shell (304) provided at the bottom of the positioning shaft (301). A connecting rod (305) is slidably disposed inside the positioning shell (304), and the top end of the connecting rod (305) passes through the positioning shaft (301) and the placement block (302). A pressure block (306) is fixedly connected to the top end of the connecting rod (305). The gun drill support unit (4) includes a lifting cylinder (401) disposed on a fixed base. A lifting block (402) is disposed on the lifting cylinder (401). A support block (403) is disposed on the top of the lifting block (402). A V-groove (404) is opened on the top of the support block (403). The pressure block (306) has a movable groove (6) inside, a top block (7) is provided in the movable groove (6), a spring (8) is provided between the top block (7) and the movable groove (6), a limiting post (9) for limiting the spring (8) is provided in the movable groove (6), and a friction pad (10) is fixedly connected to the outside of the top block (7). The top block (7) is fixedly connected to two sides with sliders (11), and the movable groove (6) is provided with a sliding groove (12) that cooperates with the sliders (11). The control unit (5) includes a movable shell (501) fixedly mounted on a fixed base (1). A movable cavity (502) is provided on one side of the movable shell (501). A positioning rod (503) is fixedly mounted inside the movable cavity (502). An adjusting rod (504) is rotatably connected to the surface of the positioning rod (503). The lifting block (402) is fixedly connected to a fixed block (505) that is hinged to the adjusting rod (504) on one side, and the fixed block (505) is located in the movable cavity (502). The movable cavity (502) is provided with a limiting block (13) that limits the rotation of the adjusting rod (504). The movable housing (501) is slidably provided with a control rod (506) hinged to the adjusting rod (504), and the top of the control rod (506) is fixedly connected to the bottom of the connecting rod (305); The top of the lifting block (402) is provided with an installation groove (14) for installing the support block (403), and a slot (15) is provided on one side of the support block (403). The inner wall of the lifting block (402) is provided with a locking block (16) that cooperates with the slot (15). A spring (17) is provided between the locking block (16) and the inner wall of the lifting block (402). The inner wall of the lifting block (402) is slidably provided with a pull rod (18) that is fixedly connected to the card block (16). One end of the pull rod (18) is fixedly connected to a round block (19), and the round block (19) is located outside the lifting block (402).

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