Positioning and clamping device for grinding cutting edge of formed cutter

Abstract

The utility model discloses a positioning and clamping device for grinding a cutting edge of a formed cutter, which comprises a workbench, a grinding wheel, a sliding plate, a turntable, a cutter seat, a locking bolt, a scale value, a convex tooth, a vertical plate, a threaded rod, a toothed bar, a main shaft, a handle rod, a through groove, a lower extension plate, a square hole, a sliding hole, a square rod, a connecting rod, a pulling plate and a spring, the forming cutter is fixed through the cutter base, the angle can be adjusted for multi-angle cutting edge grinding, and the distance between the sliding plate and the grinding wheel is adjusted through the handle rod so that accurate grinding positioning can be achieved. According to the device, precise adjustment and locking of the cutter angle are achieved through structural linkage, the grinding precision and consistency are improved, the operation safety is enhanced through a control mode away from a grinding wheel, the structure is reasonable, adjustment is flexible, operation is convenient and fast, and clamping is stable.

Description

Technical Field

[0001] This utility model belongs to the field of forming tool grinding technology, specifically relating to a positioning and clamping device for grinding the cutting edge of forming tools. Background Technology

[0002] Forming tools are widely used in metal cutting, mold making, woodworking, and other fields. During long-term use, their cutting edges are prone to wear and chipping, requiring periodic sharpening to restore their cutting performance. In actual sharpening operations, the positioning, clamping, and angle adjustment of the tool have a significant impact on sharpening accuracy and safety. Traditional tool sharpening methods often use simple clamps for fixation or manual hand-grinding, which has the following problems: First, the lack of an effective angle adjustment and scale positioning mechanism leads to reliance on manual experience for judging the sharpening angle, resulting in poor accuracy control; second, the tool's fixation during sharpening is unstable, easily causing positional shifts due to vibration or uneven force, affecting sharpening consistency; third, in some sharpening devices, the operator needs to operate the clamp at close range to the grinding wheel for adjustment, posing a safety hazard of burns from sparks or flying debris.

[0003] Furthermore, existing grinding devices also have structural limitations in achieving multi-angle grinding of tools and safe operation. For example, some devices cannot fine-tune the distance between the tool and the grinding wheel, making it difficult to adapt to the grinding needs of tools of different specifications or wear levels; some devices lack an angle locking structure, which makes it easy for the angle to deviate after adjustment, affecting the accuracy of subsequent machining. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a positioning and clamping device for grinding the cutting edge of forming tools. This device can achieve high-precision angle adjustment, excellent safe operation performance, and reliable clamping and positioning, thereby solving the problems of low grinding accuracy, poor safety, and inconvenient adjustment in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning and clamping device for grinding the cutting edge of a forming tool, comprising a worktable, a support platform provided on one side of the worktable, a grinding wheel installed on the inner side of the support platform, and track bars symmetrically arranged on the upper surface of the worktable, with a sliding plate slidably installed between the two track bars;

[0006] A turntable is rotatably mounted on the upper surface of the slide plate near the grinding wheel, and a tool holder adapted to the forming tool is fixed on the upper surface of the turntable;

[0007] A spindle is rotatably mounted on the side of the workbench facing away from the grinding wheel. A handle is provided on the top of the spindle. Fixed plates are symmetrically arranged on one side of the slide plate. A rotating shaft is rotatably mounted between the two fixed plates. The handle passes through the rotating shaft.

[0008] Furthermore, one side of the tool holder is open, the forming tool is installed inside the tool holder and extends beyond the end face of the tool holder, and a locking bolt is screwed onto the top of the tool holder, the locking bolt pressing and fixing the forming tool.

[0009] Furthermore, the tool holder has a scale value on its front side and protruding teeth evenly arranged on its rear side, and vertical plates are symmetrically arranged on both sides of the upper surface of the slide plate.

[0010] Furthermore, a threaded rod is rotatably mounted between the two upright plates, and a toothed rod is screwed onto the surface of the threaded rod, the toothed rod meshing with the protruding teeth.

[0011] Furthermore, the worktable surface is provided with a through groove, and lower extension plates are symmetrically arranged on both sides of the bottom of the through groove. The spindle is screwed between the two lower extension plates, and the handle rod passes through the through groove.

[0012] Furthermore, a square hole is provided on one end face of the main shaft, and a sliding hole is provided on the inner side of one of the lower extension plates. The sliding hole corresponds to the square hole, and a square rod is slidably installed inside the sliding hole.

[0013] Furthermore, the square rod is adapted to the square hole at the limit angle. A connecting rod is provided at the end of the square rod away from the main shaft. The connecting rod passes through the lower extension plate. A pull plate is provided at the end of the connecting rod. A spring is sleeved on the surface of the connecting rod. The spring is placed inside the sliding hole. The spring applies a force to the square rod in the direction of the square hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, by setting a rotatable turntable and a tool holder fixed thereon, combined with the meshing relationship between the rack and the tooth, can achieve precise adjustment of the forming tool angle and visualize the control through scale values. It effectively solves the problems of lack of angle adjustment and positioning mechanism and reliance on experience to judge the grinding angle in traditional devices, thereby improving the accuracy and consistency of the grinding process.

[0016] This utility model features a locking bolt on the tool holder structure, which can stably clamp the forming tool, enabling the tool to rotate synchronously with the turntable. This ensures the reliability of the tool position during grinding, avoids displacement caused by grinding vibration or uneven force, improves grinding quality, and overcomes the problem of unstable fixing effect in traditional devices.

[0017] This invention, through the design of a track bar, slide plate, spindle, and handle, enables flexible adjustment of the distance between the cutting tool and the grinding wheel. The operator can control the slide plate by moving the handle away from the grinding wheel, reducing operational risks and solving the safety hazard caused by the need for manual adjustment near the grinding wheel in existing technologies. This significantly improves the convenience and safety of operation.

[0018] This invention constructs a stable angle locking mechanism by setting up a square hole, a square rod, a sliding hole, and a spring structure. After the tool is installed or ground, the slide plate can be accurately positioned, which improves the stability during operation and solves the problem of lack of an effective angle fixing device in traditional devices, which leads to operation errors. It is beneficial to realize repetitive operation and multi-angle precision grinding. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation structure of the skateboard and turntable of this utility model;

[0022] Figure 4 This is a schematic diagram of the spindle mounting structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the main shaft and square rod structure of this utility model.

[0024] The components represented by each number in the attached diagram are listed below: 1. Worktable; 11. Support table; 12. Track bar; 13. Through groove; 14. Lower extension plate; 141. Sliding hole; 2. Grinding wheel; 3. Slide plate; 31. Vertical plate; 32. Threaded rod; 33. Gear rack; 34. Fixing plate; 4. Turntable; 41. Tool holder; 42. Locking bolt; 43. Scale value; 44. Raised tooth; 5. Rotating shaft; 6. Spindle; 61. Handle lever; 62. Square hole; 8. Square rod; 81. Connecting rod; 82. Pull plate; 9. Spring. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] refer to Figures 1-5As shown, a positioning and clamping device for grinding the cutting edge of a shaped tool includes a worktable 1, a support platform 11 on one side of the worktable 1, and a grinding wheel 2 installed on the inner side of the support platform 11. The grinding wheel 2 is connected to a motor drive shaft to achieve high-speed rotation for grinding operations. Tracks 12 are symmetrically arranged on the upper surface of the worktable 1. The tracks 12 are used to guide the slide plate 3 to move back and forth along the length of the worktable 1. The slide plate 3 is slidably installed between the two tracks 12. The slide plate 3 is used to support the tool clamping and adjustment structure and to control the distance between the slide plate 3 and the grinding wheel 2. The structure of the slide plate 3 ensures that the cutting edge of the shaped tool can maintain the same height as the grinding wheel 2 at multiple angles, thereby ensuring the consistency and safety of the grinding.

[0027] A turntable 4 is rotatably mounted on the upper surface of the slide plate 3 near the grinding wheel 2. The turntable 4 is used to adjust the grinding angle of the forming tool. A tool holder 41 adapted to the forming tool is fixed on the upper surface of the turntable 4. The tool holder 41 is fixedly connected to the turntable 4 and can rotate with the turntable 4 to achieve precise adjustment of different angles of the tool, thereby meeting the multi-angle grinding requirements of the cutting edge.

[0028] A spindle 6 is rotatably mounted on the side of the worktable 1 away from the grinding wheel 2. The spindle 6 serves as the central rotation axis of the operating structure of the slide plate 3. A handle 61 is provided on the top of the spindle 6 for operating the slide plate 3 to move back and forth. Fixed plates 34 are symmetrically arranged on one side of the slide plate 3. A rotating shaft 5 is rotatably mounted between the two fixed plates 34. The rotating shaft 5 serves as a transmission component in the sliding control structure, cooperating with the rotation of the spindle 6 to control the movement of the slide plate 3. The handle 61 passes through the rotating shaft 5, and the angle can be adjusted to allow the slide plate 3 to slide back and forth on the track 12 along the worktable 1, thereby controlling the grinding distance between the forming tool and the grinding wheel 2.

[0029] refer to Figure 3 As shown, one side of the tool holder 41 is open, and the forming tool is installed inside the tool holder 41 and extends beyond the end face of the tool holder 41. The tool holder 41 structure is used to define the position of the tool and ensure that the cutting edge is exposed for easy grinding by the exposed end. A locking bolt 42 is screwed on the top of the tool holder 41. The locking bolt 42 passes through the tool holder 41 and is engaged with the threaded hole of the seat body. By tightening, the forming tool is squeezed and fixed, thereby ensuring the positioning stability during the grinding process and preventing the tool from shifting due to vibration.

[0030] refer to Figure 3 As shown, the tool holder 41 has a scale value 43 on the front side of the curved face. The scale value 43 displays the angle value of the forming tool by cooperating with the turntable 4, which makes it easy for the operator to observe and control the grinding angle and improve the grinding accuracy. The tool holder 41 has protruding teeth 44 evenly arranged on the rear side. The protruding teeth 44 are key components of the rotation transmission structure and mesh with the rack 33 to achieve angle adjustment. The upper surface of the slide plate 3 has upright plates 31 symmetrically arranged on both sides. The upright plates 31 are used to install the threaded rod 32 and play a role in fixing and guiding.

[0031] refer to Figure 2 and Figure 3 As shown, a threaded rod 32 is rotatably mounted between two vertical plates 31. The two ends of the threaded rod 32 are rotatably connected to the vertical plates 31. The threaded rod 32 is used to drive the axial movement of the rack 33. A rack 33 is screwed onto the surface of the threaded rod 32. The rack 33 is engaged with the threaded rod 32 through a threaded pair and moves along its axis. The rack 33 meshes with the protruding teeth 44. When the threaded rod 32 rotates, it can drive the rack 33 to move back and forth, thereby driving the turntable 4 to rotate, so that the tool holder 41 rotates to achieve angle adjustment. Angle positioning is achieved through thread self-locking.

[0032] refer to Figure 2 and Figure 4 As shown, a through groove 13 is provided on the surface of the worktable 1. The through groove 13 provides space for the movement of the handle 61. Lower extension plates 14 are symmetrically arranged on both sides of the bottom of the through groove 13. The lower extension plates 14 serve as the mounting base for the spindle 6 and provide stable support for the spindle 6. The spindle 6 is screwed between the two lower extension plates 14. The spindle 6 can rotate stably without shaking during operation. The handle 61 passes through the through groove 13. When the handle 61 rotates, it controls the slide plate 3 to move back and forth, thereby realizing fine adjustment before and after tool grinding.

[0033] refer to Figure 4 and Figure 5 As shown, a square hole 62 is provided on one end face of the main shaft 6. The square hole 62 is used to cooperate with the square rod 8 to limit the rotation angle of the main shaft 6 and realize the positioning and fixing of the slide plate 3. A sliding hole 141 is provided on the inner side of the lower extension plate 14. The sliding hole 141 corresponds to the square hole 62. The square rod 8 is slidably installed inside the sliding hole 141. The square rod 8 can move back and forth along the direction of the sliding hole 141 to insert or withdraw from the square hole 62, so as to lock the main shaft 6 at the extreme angle position.

[0034] refer to Figure 4 and Figure 5 As shown, the square rod 8 is adapted to the square hole 62 at the limit angle, ensuring that the handle 61 can be precisely locked after swinging to the set position; a connecting rod 81 is provided at the end of the square rod 8 away from the main shaft 6, and the connecting rod 81 passes through the lower extension plate 14 to connect the pull plate 82; a pull plate 82 is provided at the end of the connecting rod 81, and the pull plate 82 is used by the operator to manually pull to control the separation or engagement of the square rod 8 and the square hole 62; a spring 9 is sleeved on the surface of the connecting rod 81, and the spring 9 is placed inside the sliding hole 141. The spring 9 applies a continuous elastic force to the square rod 8 in the direction of the square hole 62, so that the square rod 8 can automatically reset in the non-operational state, realize the stable maintenance of the locked state of the main shaft 6, and improve the operation safety and convenience of the grinding device.

[0035] The working principle of this utility model is as follows: First, the forming tool to be ground is installed inside the tool holder 41, ensuring that the cutting edge of the tool extends beyond the surface of the tool holder 41. Then, the locking bolt 42 is screwed in to lock and fix the forming tool, ensuring that the tool and the turntable 4 can rotate together. The threaded rod 32 is rotated to control the rack 33 to move along the axis of the threaded rod 32. Then, the turntable 4 is rotated by the meshing of the rack 33 and the tooth 44, thereby adjusting the angle of the forming tool. The angle value is observed through the scale value 43 to perform multi-angle grinding work. The threaded rod 32 is fixed by its thread self-locking property. At this time, the sliding plate 3 is moved to control the distance between the tool and the grinding wheel 2 to achieve the grinding work. The tool is at the same height as the rotation axis of the grinding wheel 2.

[0036] The movement of the slide plate 3 is controlled by swinging the handle 61. The handle 61 rotates around the main shaft 6. When the handle 61 swings forward, it can move the slide plate 3 forward, and vice versa. The rotating shaft 5 rotates with the swing of the handle 61. Due to the presence of the spring 9, the square rod 8 always has a force in the direction of the square hole 62. When the handle 61 swings outward to the maximum angle, the distance between the slide plate 3 and the grinding wheel 2 is the maximum. At this time, the square rod 8 will enter the inside of the square hole 62, thereby ensuring the stability of the angle of the handle 61 to fix the slide plate 3. This facilitates the installation of the cutting tool. After installation, the outer pull plate 82 separates the square rod 8 from the square hole 62. At this time, the handle 61 can swing freely. After grinding is finished, the handle 61 swings to the maximum angle, and the square rod 8 and the square hole 62 re-fit to maintain fixation, thereby facilitating the loading and unloading of the cutting tool. The grinding is controlled by swinging the handle 61 away from the grinding wheel 2 to prevent sparks from the grinding process from causing injury to the workers.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A positioning and clamping device for grinding the cutting edge of a shaped cutting tool, comprising a worktable (1), a support platform (11) provided on one side of the worktable (1), and a grinding wheel (2) installed on the inner side of the support platform (11), characterized in that: The workbench (1) has symmetrically arranged rails (12) on its upper surface, and a sliding plate (3) is slidably installed between the two rails (12). A turntable (4) is rotatably mounted on the upper surface of the slide plate (3) near the grinding wheel (2), and a tool holder (41) adapted to the forming tool is fixed on the upper surface of the turntable (4). A spindle (6) is rotatably mounted on the side of the workbench (1) away from the grinding wheel (2). A handle (61) is provided on the top of the spindle (6). Fixing plates (34) are symmetrically arranged on one side of the slide plate (3). A rotating shaft (5) is rotatably mounted between the two fixing plates (34). The handle (61) passes through the rotating shaft (5).

2. The positioning and clamping device for sharpening the cutting edge of a forming tool according to claim 1, characterized in that: The tool holder (41) has one open side, and the forming tool is installed inside the tool holder (41) and extends beyond the end face of the tool holder (41). A locking bolt (42) is screwed onto the top of the tool holder (41), and the locking bolt (42) presses and fixes the forming tool.

3. The positioning and clamping device for sharpening the cutting edge of a forming tool according to claim 1, characterized in that: The tool holder (41) has a scale value (43) on the front side of the curved front and protruding teeth (44) evenly arranged on the rear side. The upper surface of the slide plate (3) has upright plates (31) symmetrically arranged on both sides.

4. A positioning and clamping device for grinding the cutting edge of a forming tool according to claim 3, characterized in that: A threaded rod (32) is rotatably mounted between the two upright plates (31), and a toothed rod (33) is screwed onto the surface of the threaded rod (32), and the toothed rod (33) meshes with the protruding tooth (44).

5. A positioning and clamping device for grinding the cutting edge of a forming tool according to claim 4, characterized in that: The workbench (1) has a through groove (13) on its surface. Lower extension plates (14) are symmetrically arranged on both sides of the bottom of the through groove (13). The spindle (6) is screwed between the two lower extension plates (14). The handle (61) passes through the through groove (13).

6. A positioning and clamping device for grinding the cutting edge of a forming tool according to claim 5, characterized in that: The main shaft (6) has a square hole (62) on one end face, and a sliding hole (141) is provided on the inner side of the lower extension plate (14). The sliding hole (141) corresponds to the square hole (62), and a square rod (8) is slidably installed inside the sliding hole (141).

7. A positioning and clamping device for grinding the cutting edge of a forming tool according to claim 6, characterized in that: The square rod (8) is adapted to the square hole (62) of the limit angle. A connecting rod (81) is provided at the end of the square rod (8) away from the main shaft (6). The connecting rod (81) passes through the lower extension plate (14). A pull plate (82) is provided at the end of the connecting rod (81). A spring (9) is sleeved on the surface of the connecting rod (81). The spring (9) is placed inside the sliding hole (141). The spring (9) applies a force to the square rod (8) in the direction of the square hole (62).

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