Fine adjustment cutter handle
By designing a finely adjustable tool holder, adopting an eccentric adjustment structure and a stable connection method, the problems of tool vibration and multiple specifications were solved, achieving high-precision machining and cost reduction.
Patent Information
- Application Number
- CN202423154132.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing cutting tools suffer from vibration and loosening during machining, affecting machining accuracy and safety. Furthermore, the wide variety of tool specifications and high cost make it difficult to meet the demands of high-precision machining.
A fine-tuning tool holder was designed, which adopts an eccentric adjustment structure. The tool can be accurately aligned and fine-tuned by locking the eccentric sleeve and the correction plane. Combined with the fixing screw and the side clamping set screw, the tool can be stably connected, and the adjustment diameter range can be expanded.
It improves machining stability and surface accuracy, reduces the variety of tool specifications, lowers costs, saves setup time and inventory, and increases work efficiency.
Smart Images
Figure CN223532005U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metalworking tool technology, and in particular to a fine-tuning tool holder. Background Technology
[0002] Currently, with the improvement of mechanical manufacturing performance of parts, design requirements are becoming increasingly stringent. The precision of tool manufacturing and the precision of machining are getting closer and closer. During the machining process, the tool is clamped by a tool holder and collet and then assembled onto the machine tool spindle. The connection precision of the collet and the tool holder affects the machining precision of the tool, and correcting the precision is our primary concern. On the other hand, the tool vibrates during the machining process, and the tool is prone to loosening and falling off, which poses a safety hazard.
[0003] The existing machining method uses a coaxial chuck for direct clamping, which results in large tool runout. The only way to compensate for the size of the machining is to reduce the tool diameter, since the tool manufacturing size exceeds the machining size range, and the size fluctuates and is unstable during machining. When using U-drills and countersinks, there is no way to adjust the tool diameter, so multiple specifications of tools must be manufactured and suitable ones selected. This results in a large tool inventory and high tool costs. Therefore, this utility model provides a fine-tuning tool holder. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model discloses a fine-tuning tool holder, comprising a tool holder body, the tail end of which is tapered and connected to a machine tool interface. A locking eccentric sleeve is provided on the head end of the tool holder body, and a cutting tool is connected to the locking eccentric sleeve. The locking eccentric sleeve has an inner hole and an outer circle of an eccentric sleeve positioning shaft. The inner hole of the locking eccentric sleeve is not concentric with the outer circle of the eccentric sleeve positioning shaft. A correction plane is provided on one end of the locking eccentric sleeve, and multiple evenly distributed semi-circular grooves are provided on the side of the correction plane.
[0005] Furthermore, the locking eccentric sleeve has a tool holder head scale line on one end of the correction plane, and a middle scale line on the correction plane, which is used in conjunction with the tool holder head scale line.
[0006] Furthermore, a U-shaped relaxation groove is provided on the inner hole of the locking eccentric sleeve, a fixing screw is provided on the locking eccentric sleeve, and two side clamping screws are provided on the opposite side of the fixing screw on the locking eccentric sleeve. The locking eccentric sleeve and the two side clamping screws are used to make the locking eccentric sleeve tightly connected to the tool.
[0007] Furthermore, a hole bottom positioning plane is provided on the head end of the tool holder body, and a Z-axis adjusting screw is provided on the hole bottom positioning plane.
[0008] The advantages of this utility model compared with the prior art are: this utility model improves the utilization of ordinary CNC machine tool processing; the tool design has an eccentric adjustment structure, which can finely adjust the tool and machine tool runout, improve processing stability and surface accuracy, expand the adjustment diameter range, realize the processing of multiple specifications and sizes with one tool, avoid the production of non-standard tools, save on the inventory of multiple specifications, and reduce the machine setup time; it saves tool costs and reduces the unit cost of processed parts. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 .
[0010] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 .
[0011] Reference numerals: 1-Tool holder body; 2-Locking eccentric sleeve; 3-Semi-circular groove; 4-Center scale line; 5-U-shaped relaxation groove; 6-Outer circle of eccentric sleeve positioning shaft; 7-Fixing screw; 8-Correction plane; 9-Tool holder head scale line; 10-Side clamping set screw; 11-Z-direction adjusting set screw; 12-Hole bottom positioning plane. Detailed Implementation
[0012] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0013] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0015] Example: Figures 1-2 As shown, a fine-tuning tool holder includes a tool holder body 1, the tail end of which is tapered and connected to a machine tool interface. A locking eccentric sleeve 2 is provided on the head end of the tool holder body 1, and a cutting tool is connected to the locking eccentric sleeve 2. The locking eccentric sleeve 2 has an inner hole and an outer circle 6 of the eccentric sleeve positioning shaft. The inner hole of the locking eccentric sleeve 2 is not concentric with the outer circle 6 of the eccentric sleeve positioning shaft. A correction plane 8 is provided on one end of the locking eccentric sleeve 2, which facilitates alignment to zero. Multiple evenly distributed semicircular grooves 3 are provided on the side of the correction plane 8, which facilitates quick adjustment.
[0016] The locking eccentric sleeve 2 has a calibration plane 8 at one end with a tool holder head scale line 9. The calibration plane 8 has a middle scale line 4. The middle scale line 4 and the tool holder head scale line 9 are used together. According to the measured tool runout, the middle scale line 4 on the locking eccentric sleeve 2 is aligned with the tool holder head scale line 9 on the calibration plane 8 to correct the runout accuracy. This makes it easy to adjust the locking eccentric sleeve 2 with precise data. By rotating the locking eccentric sleeve 2, the tool holder runout and machine tool runout can be aligned, reducing tool runout, making the blade wear more uniform, and improving service life.
[0017] The inner hole of the locking eccentric sleeve 2 is provided with a U-shaped relaxation groove 5. The locking eccentric sleeve 2 is provided with a fixing screw 7. On the opposite side of the fixing screw 7, there are two side clamping screws 10. The locking eccentric sleeve 2 and the two side clamping screws 10 are used to make the locking eccentric sleeve 2 tightly connected to the tool. The head end of the tool holder body 1 is provided with a hole bottom positioning plane 12. The hole bottom positioning plane 12 is provided with a Z-direction adjusting screw 11. The fixing screw 7 and the side clamping screws 10 are used to make the tool tightly connected to the locking eccentric sleeve 2, ensuring stability during use.
[0018] When in use, the diameter deviation range can be adjusted by eccentric adjustment. The maximum adjustment on one side is 0.5mm. Any size within this range can be finely adjusted. After one adjustment, the tool can be directly assembled when changing tools later without the need for readjustment. This avoids the need to manufacture non-standard tools, saves on the inventory of various specifications, reduces the machine setup time, and improves work efficiency.
[0019] Furthermore, it should be noted that the shapes and names of the parts and components described in the specific embodiments described in this specification may differ. All equivalent or simple variations made based on the concept, structure, features, and principles of this utility model patent are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.
Claims
1. A fine-tuning tool holder, characterized in that: The tool holder includes a tool holder body (1), the tail end of which is a conical surface. The tail end of the tool holder body (1) is connected to a machine tool interface. A locking eccentric sleeve (2) is provided on the head end of the tool holder body (1). A cutting tool is connected to the locking eccentric sleeve (2). An inner hole and an outer circle (6) of the eccentric sleeve positioning shaft are provided inside the locking eccentric sleeve (2). The inner hole of the locking eccentric sleeve (2) is not concentric with the outer circle (6) of the eccentric sleeve positioning shaft. A correction plane (8) is provided on one end of the locking eccentric sleeve (2). A plurality of evenly distributed semi-circular grooves (3) are provided on the side of the correction plane (8).
2. The precision-adjustable tool holder as described in claim 1, characterized in that: The locking eccentric sleeve (2) has a correction plane (8) on one end and a tool holder head scale line (9) on the other end. The correction plane (8) has a middle scale line (4) which is used in conjunction with the tool holder head scale line (9).
3. The precision-adjustable tool holder as described in claim 2, characterized in that: The inner hole of the locking eccentric sleeve (2) is provided with a U-shaped relaxation groove (5), the locking eccentric sleeve (2) is provided with a fixing screw (7), and two side clamping screws (10) are provided on the opposite side of the fixing screw (7) on the locking eccentric sleeve (2). The locking eccentric sleeve (2) and the tool are tightly connected by the fixing screw (7) and the two side clamping screws (10).
4. The precision-adjustable tool holder as described in claim 3, characterized in that: The tool holder body (1) has a hole bottom positioning plane (12) at its head end, and a Z-axis adjusting screw (11) is provided on the hole bottom positioning plane (12).