Specification
Positioning Fixture for Making Cutter Technical Field The model utility relates to the technical field of tool making, in particular to a positioning clamp for tool making. Background All the knives are specially made steel blanks. After each tool blank is hot forged, it keeps special hardness and rigidity. How high the temperature, how fast it heats up and how fast it cools down is the accumulation of experience. Equipment shall be selected according to the material, hardness, thickness and size. Tool material is the fundamental factor that determines the cutting performance of tools, and has great influence on machining efficiency, quality, cost and tool durability. The harder the tool material is, the better its wear resistance, the higher its hardness, the lower its impact toughness and more brittle the material is. Hardness and toughness are a pair of contradictions, and they are also a key to be overcome by tool materials. The existing positioning fixture for tool making needs to fix tools with different lengths when in use, and bolts are usually used to adjust the fixture position during adjustment, which leads to inaccurate adjustment position. Detailed descriptions The purpose of the model utility is to provide a positioning clamp for making a cutter. To achieve the aforesaid purpose, the model utility adopts the following technical proposal: The invention relates to a positioning fixture for tool making, which comprises a fixture motherboard, wherein one end of the fixture motherboard is provided with a mounting plate; the other end surface of the fixture motherboard is provided with an adjusting chute; the upper side of the adjusting chute is provided with a limiting plate; the lower surface of the limiting plate is connected with a screw nut seat; the inside of the adjusting chute is rotatably connected with an adjusting screw through a bearing Preferably, the upper end of the screw nut seat is provided with a connection plug, the lower surface of one end of the limiting plate is provided with a connecting slot, one end of the connecting slot is provided with a connecting pressing block, one end of the limiting plate is screwed with a second knob screw, and one end of the second knob screw is rotationally connected with the connecting pressing block through a bearing. Preferably, the shape of the connecting plug is set in a dovetail shape, one side of the connecting slot is provided with an opening through which the connecting plug may pass, and one end of the connecting pressing block and the connecting slot are respectively clamped at two ends of the connecting plug. Preferably, one end of the limiting plate is provided with a limiting groove, the inner side of the limiting groove is provided with a fixing plate, the inner side of the limiting plate is rotatably connected with a fixing screw through a bearing, one side of the limiting plate is provided with a fixing knob which is fixedly connected with one end of the fixing screw, the outer side of the fixing screw is sleeved with a fixing screw nut, and the fixing plate is fixedly connected with the fixing screw nut. Preferably, the inner side of the mounting plate is provided with a fixing splint, and the outer side of the fixing plate is screwed with a first turning screw, and one end of the first turning screw penetrates via the mounting plate and is connected with the fixing splint. Preferably, the inner side of one end of the fixing plate is set as an inclined surface, and the inner side of the other end of the fixing plate is set as a plane. The model utility has at least the following beneficial effects: Via the designed screw nut seat, turbine, adjusting screw and worm, when fixing the cutter, only the adjusting handwheel rotates the worm, and the adjusting screw is driven to rotate by the transmission of the turbine, so that the screw nut seat moves and drives the limiting plate to fix the cutter, which is more stable during fixing and
Specification prevents loosening after fixing by the self-locking effect of the worm and turbine. Via the designed connecting slot, connecting pressing block and connection inserting block, the limiting plate may be replaced according to the different shapes of the cutter when using the clamp, and the limiting plate may be fixed by pressing the connecting pressing block on the connection inserting block, so it is more convenient and quick to turn the second knob screw manually when replacing. Brief Description of the Drawings To explain the technical proposal of the embodiments of the model utility more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the model utility, and for ordinary technicians in the field, other drawings may be obtained according to these drawings without paying creative labor. Figure 1 is a schematic diagram of the model utility; Figure 2 is a schematic diagram of the adjusting handwheel connecting mechanism of the Figure 1; Figure 3 is a schematic diagram of the internal structure of the limiting plate of the Figure 1. In the picture: 1. Clamp Motherboard; 2. First Turning Screw; 3. Mounting Plate; 4. Fixing Splint; 5. Adjusting Chute; 6. Limiting Groove; 7. Limiting Plate; 8. Adjusting Handwheel; 9. Second Knob Screw; 10. Fixing Knob; 11. Screw Nut Seat; 12. Connecting Plug; 13. Turbine; 14. Adjusting Screw Rod; 15. Worm; 16. Adjusting Groove; 17. Fixing Plate; 18. Screw Rod for Fixing; 19. Screw Nut for Fixing; 20. Pressing Block for Connection; 21. Connecting Slot. Detailed Description: of the Embodiments To make the purpose, technical proposal and advantages of the model utility clearer, the model utility will be further described in detail with reference to the attached drawings and embodiments. It shall be understood that the specific embodiments described here are only used to explain the model utility and are not used to limit the model utility. With reference to Figures 1-3, a positioning jig for tool making comprises a jig motherboard 1, one end of which is provided with a mounting plate 3, other end surface of which is provided with an adjusting chute 5, upper side of which is provided with a limiting plate 7, lower surface of which is connected with a screw nut seat 11, and the inside of which is rotatably connected with an adjusting screw 14 through a bearing. The screw nut seat 11 is sleeved on the adjusting screw 14. One side of one end of the adjusting chute 5 is provided with an adjusting groove 16. Inside of the adjusting groove 16 is rotatably connected with a worm 15 through a bearing. One end of the adjusting screw 14 is fixedly connected with a turbine 13 which meshes with the worm 15. The plan has the following working processes: In use, according to the shape and size of the cutter, the connecting pressing block 20 is driven to move in the connecting slot 21 by turning the second knob screw 9. After the connecting pressing block 20 is moved away from one end of the connecting plug 12, limiting plate 7 is detached from the screw nut seat 11, then the limiting plate 7 with corresponding shape is replaced, and the connecting plug 12 is inserted into the connecting slot 21 of the new limiting plate 7. Screw in the second knob screw 9 to push the connecting pressing block 20 to be clamped on the connection plug block 12. When in use, put the tool holder between the fixing clamping plates 4 and push the fixing clamping plates 4 to press tightly on the tool holder for fixing. Then turn the adjusting handwheel 8 to drive the worm 15 to rotate, and the worm 15 drives the turbine 13 to rotate so that the turbine 13 drives the adjusting screw 14 to rotate. Make the screw nut seat 11 move along the adjusting screw 14, to drive the limiting plate 7 to move and engage with the other end of the cutter, then rotate the fixing knob 10 to drive the fixing screw 18 to rotate, so that the fixing screw nut 19 moves on the fixing screw 18 and drives the fixing plate 17 to fix the cutter. According to the Aforesaid Working Process: When fixing the cutter, it is only necessary to rotate the worm 15 via the adjusting handwheel 8, and drive the
Specification adjusting screw 14 to rotate via the transmission of the turbine 13, so that the screw nut seat 11 moves and drives the limiting plate 7 to fix the cutter, which is more stable during fixing, and the phenomenon of loosening after fixing is prevented by the self-locking effect of the worm 15 and the turbine 13. Further, the upper end of the screw nut seat 11 is provided with a connecting plug 12, lower surface of one end of the limiting plate 7 is provided with a connecting slot 21, one end of the connecting slot 21 is provided with a connecting pressing block 20, one end of the limiting plate 7 is screwed with a second knob screw 9, and one end of the second knob screw 9 is rotationally connected with the connecting pressing block 20 through a bearing. Further, the connecting plug 12 has a dovetail shape, and one side of the connecting slot 21 is provided with an opening for the connecting plug 12 to pass through, and one end of the connecting pressing block 20 and the connecting slot 21 are respectively engaged with both ends of the connecting plug 12. Further, one end of the limiting plate 7 is provided with a limiting groove 6, and the inner side of the limiting groove 6 is provided with a fixing plate 17 which is rotatably connected with a fixing screw 18 through a bearing; one side of the limiting plate 7 is provided with a fixing knob 10 which is fixedly connected with one end of the fixing screw 18; Further, a fixing clamping plate 4 is arranged on the inner side of the mounting plate 3, and a first turning screw 2 is screwed on the outer side of the mounting plate 3, and one end of the first turning screw 2 passes through the mounting plate 3 and is connected with the fixing clamping plate 4. Further, the inner side of one end of the fixing plate 17 is set as an inclined surface, and the inner side of the other end of the fixing plate 17 is set as a plane. The aforesaid shows and describes the fundamental principle, main features and advantages of the model utility. Those skilled in the industry shall understand that the model utility is not limited by above-mentioned embodiments, but only the principles of the model utility are described in above-mentioned embodiments and specifications. On the premise of not departing from the spirit and scope of the model utility, there will be various changes and improvements of the model utility, all of which fall within the scope of the claimed model utility. The scope of protection required by the model utility is defined by the appended claims and their equivalents.