A boring tool holder for exhaust valve core machining

Abstract

The utility model discloses a boring tool holder of exhaust valve core processing cutter applies in the technical field of tool holder, including fixed frame and fixed mechanism, the inside of fixed frame is provided with base, and the inside of fixed frame and the bottom part of base are welded with fixed plate and first wedge respectively, the back of first wedge is penetrated and is connected with first screw rod, and one end of first screw rod is rotatably connected with second wedge, the back of fixed frame is hinged with connecting plate, the back of connecting plate is welded with mounting bracket, the back of mounting bracket is penetrated and is connected with third screw rod, and one end of third screw rod is rotatably connected with positioning plate. Can be convenient to adjust height, and simple and convenient operation, and the burden of reassembling is exempted, and the accuracy of adjusting distance is improved, and good flexibility, and can have adjustable positioning function simultaneously, avoid subsequent cutter insertion too deep or too shallow, improve the work efficiency of personnel, and the practicality is high.

Description

Technical Field

[0001] This utility model belongs to the field of tool holder technology, and specifically relates to a boring tool holder for machining exhaust valve cores. Background Technology

[0002] Currently, Chinese utility model patent CN211803852U discloses a boring tool holder for machining exhaust valve cores. Although the tool holder has a simple structure and can clamp and fix the tool inserted into the mounting hole with the help of fixing holes and fixing bolts, there are still other problems in use. For example, it is not convenient to adjust the height. The tool holder and the bottom conveyor are rigidly connected. Different exhaust valve cores have different inner wall heights due to different specifications. In this case, a shim of corresponding thickness needs to be added to the bottom of the tool holder. The accuracy is poor. Moreover, it does not have an adjustable positioning function. The internal cavity of the base is through. When installing the tool, it is necessary to move it back and forth in the cavity according to the machining depth. Since there is no obvious marking, measuring tools are required for each installation, which reduces the work efficiency of personnel. Utility Model Content

[0003] The purpose of this utility model is to provide a boring tool holder for machining exhaust valve cores, which has the advantages of easy height adjustment and adjustable positioning function.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a boring tool holder for machining exhaust valve cores, comprising a fixed frame and a fixing mechanism. A base is provided inside the fixed frame. A fixing plate and a first wedge block are welded to the inside of the fixed frame and the bottom of the base, respectively. A first screw is threaded through the back of the first wedge block. A second wedge block is rotatably connected to one end of the first screw. A connecting plate is bolted to the back of the fixed frame. A mounting bracket is welded to the back of the connecting plate. A third screw is threaded through the back of the mounting bracket. A positioning plate is rotatably connected to one end of the third screw. A through groove is opened inside the connecting plate. Two mounting grooves are opened at the top of the fixed frame. Fastening bolts are threaded through the mounting grooves.

[0005] The above technical solution facilitates height adjustment, is simple and convenient to operate, eliminates the burden of disassembly and reassembly, improves the accuracy of adjustment distance, offers good flexibility, and has an adjustable positioning function to prevent subsequent tool insertion from being too deep or too shallow, thereby improving the work efficiency of personnel and making it highly practical.

[0006] The present invention is further configured such that the fixing mechanism includes a second screw, and there are two second screws. The two second screws are respectively welded to both sides of the base. Sliding grooves are provided on both sides of the fixing frame. The other end of the second screw extends to the outside of the sliding groove and is threadedly connected to a fixing nut.

[0007] The above technical solution is adopted: the base can be fixed by setting the second screw, sliding groove and fixing nut. When the base is lifted by the second wedge block, it will drive the second screw and fixing nut to move upward together. The base will not fall due to the support of the second wedge block. When the base rises to a suitable height, the fixing nut will be tightened. After the fixing nut is tightened, the second screw and the base will be fixed.

[0008] The present invention is further configured such that a spring washer is slidably sleeved on the surface of the second screw.

[0009] The above technical solution improves the fixing effect of the fixed nut after tightening by setting the spring washer, thus playing a role in shock resistance and preventing loosening.

[0010] The present invention is further configured such that guide rods are symmetrically welded to the back of the second wedge block, and the other end of the guide rods passes through and extends to the outside of the fixing plate.

[0011] The above technical solution allows for the limiting of the second wedge block by setting a guide rod, preventing the second wedge block from tilting during its forward and backward movement.

[0012] The present invention is further configured such that a first throttle is bolted to the other end of the first screw, and a second throttle is bolted to the other end of the third screw.

[0013] The above technical solution allows for easy manual rotation of the first and third screws by the use of the first and second rotary handles.

[0014] The present invention is further configured such that mounting plates are welded to both sides of the fixing frame, and two mounting holes are formed inside the mounting plates.

[0015] The above technical solution allows for easy fixing of the frame with screws by the installation plate and mounting holes, reducing the hassle of temporary drilling.

[0016] The present invention is further configured such that both the first screw and the third screw are made of stainless steel.

[0017] The above technical solution features high strength, low density, and excellent corrosion resistance in the first and third screws.

[0018] In summary, this utility model has the following beneficial effects: 1. First, fix the frame to the designated position by passing screws through the mounting holes. After the frame is fixed, hold the first handle and rotate the first screw. When the first screw rotates, it will move the second wedge block inward with the help of the guide rod. When the second wedge block moves inward, it will push the first wedge block and the base upward. When the base moves upward, it will move the second screw and the fixing nut upward together. When the base moves to the appropriate height, tighten the fixing nut. This makes it easy to adjust the height, is simple and convenient to operate, eliminates the burden of disassembly and reassembly, improves the accuracy of the adjustment distance, and has good flexibility. 2. First, measure the required insertion depth of the tool shank. After measurement, hold the second throttle and rotate the third screw. When the third screw rotates, it will drive the positioning plate through the through groove in the connecting plate into the inner cavity of the fixed frame. After the positioning plate moves inward to the appropriate distance, insert the tool shank inward. After the tool is fully inserted and contacts the positioning plate, tighten the upper fastening bolt. It has an adjustable positioning function, which avoids the tool being inserted too deeply or too shallowly, improves the work efficiency of personnel, and has high practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the right side of the structure of this utility model; Figure 3 This is a schematic diagram of the partial assembly and use of the structure of this utility model; Figure 4 This is a schematic diagram of the partial assembly and use of the structure of this utility model.

[0020] Reference numerals: 1. Fixing frame; 2. Base; 3. Fixing plate; 4. First wedge block; 5. First screw; 6. Second wedge block; 7. Fixing mechanism; 71. Second screw; 72. Sliding groove; 73. Fixing nut; 8. Connecting plate; 9. Mounting bracket; 10. Third screw; 11. Positioning plate; 12. Through groove; 13. Mounting groove; 14. Fastening bolt; 15. Spring washer; 16. Guide rod; 17. First throttle; 18. Second throttle; 19. Mounting plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1: refer to Figure 1 , Figure 2 and Figure 3A boring tool holder for machining exhaust valve cores includes a fixed frame 1 and a fixing mechanism 7. A base 2 is disposed inside the fixed frame 1. A fixing plate 3 and a first wedge block 4 are welded to the inside of the fixed frame 1 and the bottom of the base 2, respectively. A first screw 5 is threaded through the back of the first wedge block 4. A second wedge block 6 is rotatably connected to one end of the first screw 5. The fixed frame 1 is first fixed to a designated position by passing screws through mounting holes. After the fixed frame 1 is fixed, the first handle 17 is held by hand to drive the first screw 5. When the first screw 5 rotates, it will drive the second wedge block 6 to move inward with the help of the guide rod 16. When the second wedge block 6 moves inward, it will push the first wedge block 4 and the base 2 upward. When the base 2 moves upward, it will drive the second screw 71 and the fixing nut 73 to move upward together. When the base 2 moves to the appropriate height, the fixing nut 73 can be tightened. This makes it easy to adjust the height, and the operation is simple and convenient. It eliminates the burden of disassembly and reassembly, improves the accuracy of the adjustment distance, and has good flexibility.

[0023] refer to Figure 1 and Figure 2 The fixing mechanism 7 includes two second screws 71, which are welded to both sides of the base 2. Sliding grooves 72 are provided on both sides of the fixing frame 1. The other end of the second screw 71 extends to the outside of the sliding groove 72 and is threadedly connected to a fixing nut 73. The base 2 can be fixed by the second screw 71, the sliding groove 72 and the fixing nut 73. When the base 2 is lifted by the second wedge block 6, it will drive the second screw 71 and the fixing nut 73 to move upward together. The base 2 will not fall because it is supported by the second wedge block 6. When the base 2 rises to a suitable height, the fixing nut 73 is tightened. After the fixing nut 73 is tightened, the second screw 71 and the base 2 will be fixed.

[0024] refer to Figure 1 The surface of the second screw 71 is slidably fitted with a spring washer 15. The spring washer 15 improves the fixing effect of the fixed nut 73 after tightening, and plays a role in shock resistance and preventing loosening.

[0025] refer to Figure 1 , Figure 2 and Figure 3 The back of the second wedge block 6 is symmetrically welded with guide rods 16. The other end of the guide rods 16 passes through and extends to the outside of the fixing plate 3. The guide rods 16 can limit the second wedge block 6 and prevent the second wedge block 6 from tilting during the back and forth movement.

[0026] refer to Figure 1 and Figure 2Mounting plates 19 are welded to both sides of the fixed frame 1. Two mounting holes are opened inside the mounting plates 19. The mounting plates 19 and the mounting holes make it easy for personnel to fix the fixed frame 1 with screws, reducing the trouble of temporary drilling.

[0027] Brief description of the usage process: First, fix the fixing frame 1 to the designated position by passing screws through the mounting holes. After the fixing frame 1 is fixed, hold the first throttle 17 and rotate the first screw 5. When the first screw 5 rotates, it will drive the second wedge block 6 to move inward with the help of the guide rod 16. When the second wedge block 6 moves inward, it will push the first wedge block 4 and the base 2 upward. When the base 2 moves upward, it will drive the second screw 71 and the fixing nut 73 to move upward together. When the base 2 moves to the appropriate height, tighten the fixing nut 73.

[0028] Example 2: refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A boring tool holder for machining exhaust valve cores is disclosed. A connecting plate 8 is bolted to the back of a fixed frame 1, and a mounting bracket 9 is welded to the back of the connecting plate 8. A third screw 10 is threaded through the back of the mounting bracket 9. A positioning plate 11 is rotatably connected to one end of the third screw 10. A through groove 12 is provided inside the connecting plate 8. Two mounting grooves 13 are provided on the top of the fixed frame 1. Fastening bolts 14 are threaded inside the mounting grooves 13. The depth to which the tool shank needs to be inserted is measured first. After the measurement is completed, the second throttle 18 is held by hand to drive the third screw 10 to rotate. When the third screw 10 rotates, it will drive the positioning plate 11 to enter the inner cavity of the fixed frame 1 through the through groove 12 in the connecting plate 8. When the positioning plate 11 moves inward to a suitable distance, the tool shank is inserted inward. When the tool is inserted to the bottom and contacts the positioning plate 11, the fastening bolts 14 above are tightened. It has an adjustable positioning function to avoid the tool being inserted too deeply or too shallowly, improves the work efficiency of personnel, and has high practicality.

[0029] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The other end of the first screw 5 is bolted with a first throttle 17, and the other end of the third screw 10 is bolted with a second throttle 18. The first throttle 17 and the second throttle 18 make it easy for personnel to rotate the first screw 5 and the third screw 10 by hand.

[0030] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4Both the first screw 5 and the third screw 10 are made of stainless steel and have the characteristics of high strength, low density and excellent corrosion resistance.

[0031] Brief description of the usage process: First, measure the depth to which the cutter shank needs to be inserted. After the measurement is completed, hold the second throttle 18 and rotate the third screw 10. When the third screw 10 rotates, it will drive the positioning plate 11 through the through groove 12 in the connecting plate 8 into the inner cavity of the fixed frame 1. After the positioning plate 11 moves inward to the appropriate distance, insert the cutter shank inward. After the cutter is inserted to the bottom and contacts the positioning plate 11, tighten the upper fastening bolt 14.

[0032] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0033] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A boring tool holder for machining exhaust valve cores, comprising a fixed frame (1) and a fixing mechanism (7), characterized in that: The fixed frame (1) has a base (2) inside. The fixed frame (1) and the base (2) are respectively welded with a fixed plate (3) and a first wedge block (4). The back of the first wedge block (4) is threadedly connected to a first screw (5). One end of the first screw (5) is rotatably connected to a second wedge block (6). The back of the fixed frame (1) is bolted with a connecting plate (8). The back of the connecting plate (8) is welded with a mounting bracket (9). The back of the mounting bracket (9) is threadedly connected to a third screw (10). One end of the third screw (10) is rotatably connected to a positioning plate (11). The connecting plate (8) has a through groove (12) inside. The top of the fixed frame (1) has two mounting grooves (13). The mounting grooves (13) are threadedly connected to fastening bolts (14).

2. The boring tool holder for an exhaust valve core machining tool according to claim 1, characterized in that: The fixing mechanism (7) includes a second screw (71), and there are two second screws (71). The two second screws (71) are welded to both sides of the base (2). Sliding grooves (72) are provided on both sides of the fixing frame (1). The other end of the second screw (71) extends to the outside of the sliding groove (72) and is threaded with a fixing nut (73).

3. The boring tool holder for an exhaust valve core machining tool according to claim 2, characterized in that: The surface of the second screw (71) is slidably fitted with a spring washer (15).

4. The boring tool holder for an exhaust valve core machining tool according to claim 1, characterized in that: The back of the second wedge block (6) is symmetrically welded with guide rods (16), and the other end of the guide rods (16) passes through and extends to the outside of the fixing plate (3).

5. The boring tool holder for an exhaust valve core machining tool according to claim 1, characterized in that: The other end of the first screw (5) is bolted with a first throttle (17), and the other end of the third screw (10) is bolted with a second throttle (18).

6. The boring tool holder for an exhaust valve core machining tool according to claim 1, characterized in that: Mounting plates (19) are welded to both sides of the fixed frame (1), and two mounting holes are opened inside the mounting plates (19).

7. The boring tool holder for an exhaust valve core machining tool according to claim 1, characterized in that: Both the first screw (5) and the third screw (10) are made of stainless steel.

Images