A tool holder with precise height adjustment

Abstract

The utility model discloses a kind of tool rest of accurate height adjustment, it is related to tool rest technical field, the utility model includes abutment and is movably connected in abutment one side along vertical direction for the adjusting block of fixed tool, the side of abutment towards adjusting block is slidably connected with sliding block along vertical direction, the adjusting block is slidably connected in the side of sliding block away from abutment, the abutment is equipped with the coarse adjustment mechanism for driving sliding block movement, the sliding block is equipped with the fine adjustment mechanism for driving adjusting block movement;The cooperation of coarse adjustment mechanism and fine adjustment mechanism makes the adjustment of tool more convenient, accurate, and then can better apply various application scenarios.

Description

Technical Field

[0001] This utility model relates to a tool holder, and more specifically, to a tool holder with precisely adjustable height. Background Technology

[0002] In the field of machining, the tool holder is one of the key components of a machine tool. Its core function is to reliably hold the tool and accurately adjust the cutting height of the tool to ensure the dimensional accuracy of the machined workpiece.

[0003] Existing tool holders that require height adjustment often use a screw lifting structure, where rotating the screw directly raises or lowers the tool holder. However, the screw lead is usually large, which results in a large displacement of the tool holder for each rotation of the screw. This makes it impossible to accurately adjust the tool holder to the corresponding horizontal height, affecting the stability of subsequent machining and the quality of the finished product.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a tool holder with precise height adjustment.

[0006] The technical solution of this utility model is: A tool holder with precise height adjustment includes a base and an adjusting block movably connected in the vertical direction to one side of the base for fixing the tool. A sliding block is slidably connected in the vertical direction on the side of the base facing the adjusting block. The adjusting block is slidably connected on the side of the sliding block away from the base. The base is provided with a coarse adjustment mechanism for driving the sliding block to move, and the sliding block is provided with a fine adjustment mechanism for driving the adjusting block to move.

[0007] The present invention is further configured such that the coarse adjustment mechanism includes a coarse adjustment screw rotatably connected to the base and a coarse drive block threadedly connected to the coarse adjustment screw. A sliding cavity is provided on the side of the base near the sliding block. The coarse adjustment screw extends into the sliding cavity. The coarse drive block is fixedly connected to the sliding block and extends into the sliding cavity to thread with the coarse adjustment screw. The coarse drive block forms a sliding fit with the inner wall of the sliding cavity.

[0008] The present invention is further configured such that the fine adjustment mechanism includes a fine adjustment screw, a fine drive block, and a drive assembly. The adjustment block has a protrusion on one side facing the sliding block, and the sliding block has a sliding recess for accommodating the protrusion. The protrusion slides in cooperation with the inner wall of the sliding recess. A transmission cavity inclined in the length direction is formed in the protrusion. The fine adjustment screw extends into the transmission cavity and is rotatably connected to the sliding block. The fine drive block is threaded to the fine adjustment screw and slides in cooperation with the inner wall of the transmission cavity. The drive assembly is used to drive the fine adjustment screw to rotate.

[0009] The present invention is further configured such that the driving assembly includes a worm gear and a worm that mesh with each other, a receiving cavity is provided in the sliding block, one end of the fine-tuning screw extends into the receiving cavity and is keyed to the worm gear, and the worm is rotatably connected to the inner wall of the receiving cavity.

[0010] The present invention is further configured such that the adjusting block is provided with an elastic locking structure for limiting its relative displacement with the sliding block. The elastic locking structure includes a locking bolt and a disc spring. The adjusting block is provided with a groove, and the inner bottom wall of the groove is provided with a second waist-shaped hole. The locking bolt passes through the disc spring and the second waist-shaped hole in sequence and is threadedly connected to the sliding block. The disc spring is in a compressed state under the pressure of the locking bolt.

[0011] The present invention is further configured such that a protective member is detachably connected to the groove, and the protective member has a clearance groove for avoiding the elastic locking structure.

[0012] The present invention is further configured such that the top of the adjusting block is fixedly connected to a fixing member with an L-shaped cross section by bolts, and a gap for accommodating the cutting tool is formed between the extension of the fixing member and the top of the adjusting block. The fixing member has a threaded hole, and the bolt passes through the threaded hole to press the cutting tool.

[0013] The beneficial technical effects of this utility model are: By using the coarse adjustment mechanism and the fine adjustment mechanism to fix the tool, when it is necessary to move the horizontal height quickly, the coarse adjustment mechanism can be used to move the tool quickly. When precise adjustment is required, the fine adjustment mechanism can be used to make the tool more accurately positioned at the corresponding horizontal height. The combination of the two makes the tool adjustment more convenient and stable, and thus better applicable to various application scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is an exploded view of the present invention from another perspective; Figure 4 This is a schematic diagram of the structure of the adjusting block of this utility model; Figure 5 This is a schematic diagram of the fine adjustment mechanism of this utility model; In the diagram, 1 is the base; 11 is the sliding cavity; 2 is the sliding block; 21 is the sliding recess; 22 is the limiting recess; 3 is the adjusting block; 31 is the fixing part; 32 is the protrusion; 321 is the transmission cavity; 33 is the limiting plate; 34 is the groove; 4 is the coarse adjustment mechanism; 41 is the coarse adjustment screw; 42 is the coarse drive block; 5 is the fine adjustment mechanism; 51 is the fine drive block; 52 is the fine adjustment screw; 53 is the worm gear; 54 is the worm; 6 is the locking bolt; 61 is the disc spring; 62 is the washer; 7 is the protective part; and 71 is the fixing pin. Detailed Implementation

[0015] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0016] A tool holder with precise height adjustment, such as Figures 1-5 As shown, the device includes a base 1. A sliding block 2 is slidably connected to one side of the base 1 in a vertical direction. An adjusting block 3 is slidably connected to the side of the sliding block 2 opposite to the base 1 in a vertical direction. A fixing member 31 for placing a tool is provided at the top end of the adjusting block 3 opposite to the sliding block 2. A coarse adjustment mechanism 4 for driving the sliding block 2 to move is provided on the base 1, and a fine adjustment mechanism 5 for driving the adjusting block 3 to move is provided on the sliding block 2. The fixing member 31 is fixedly connected to the adjusting block 3 by bolts. The cross-section of the fixing member 31 is L-shaped, so that there is a gap between the extension of the fixing member 31 and the top of the adjusting block 3. The tool is placed horizontally in the gap. Symmetrically arranged threaded holes are opened on the fixing member 31. The bolts pass through the fixing member 31 and press the tool, so that the tool is well fixed on the adjusting block 3.

[0017] The coarse adjustment mechanism 4 includes a coarse adjustment screw 41 and a coarse drive block 42. A sliding cavity 11 is provided on the side of the base 1 near the sliding block 2. The coarse adjustment screw 41 extends into the sliding cavity 11 and is rotatably connected to the base 1. The coarse drive block 42 is threaded to the side of the sliding block 2 facing the base 1 and extends into the sliding cavity 11 and is threaded to the coarse adjustment screw 41. The coarse drive block 42 forms a sliding fit with the inner wall of the sliding cavity 11. By simply rotating the coarse adjustment screw 41, the coarse drive block 42 threaded to it can be driven to slide along its axial direction, thereby driving the sliding block 2 to slide in the vertical direction, achieving the effect of coarse adjustment. The coarse adjustment screw 41 is an internal hexagon screw with an internal hexagon nut at the top. The coarse adjustment screw 41 can be rotated using an internal hexagon wrench. The fine adjustment mechanism 5 includes a fine drive block 51, a fine adjustment screw 52, ​​and a meshing worm gear 53 and worm 54. The adjustment block 3 has a protrusion 32 on the side facing the sliding block 2. The sliding block 2 has a sliding recess 21 on the side facing the adjustment block 3 to accommodate the protrusion 32. Both ends of the sliding recess 21 extend vertically and are open. The protrusion 32 slides against the inner wall of the sliding recess 21. The cross-section of the protrusion 32 is an isosceles trapezoid. A transmission cavity 321 is formed on the protrusion 32. The transmission cavity 321 is inclined along its length and both ends are open. The fine adjustment screw 52 extends into the transmission cavity 321 and passes through it, rotatably connecting with the inner wall of the sliding recess 21. A receiving cavity for accommodating the worm gear 53 and worm 54 is formed on one side of the sliding block 2. One side of the receiving cavity is open. A protective cover is fixedly connected to one side of the sliding block 2 by bolts. The protective cover can seal the open part of the receiving cavity. The worm gear 53 and worm 54 are protected. One end of the fine-tuning screw 52 extends through the inner wall of the sliding recess 21 into the receiving cavity and is keyed to the worm gear 53. The worm 54 is rotatably connected to the inner wall of the receiving cavity. The fine-tuning screw 52 is threadedly connected to the fine-drive block 51 and slides in cooperation with the inner wall of the transmission cavity 321. The cross-section of the fine-drive block 51 is a parallelogram. When the worm 54 rotates, the turbine rotates, causing the fine-tuning screw 52 connected to the turbine key to rotate, which drives the fine-drive block 51 threadedly connected to it to move axially. Since the transmission cavity 321 is inclined, it has a guiding function, allowing the adjusting block 3 to slide in the vertical direction. Since the movement of the adjusting block 3 is driven by the movement of the fine-drive block 51, the adjusting block 3 achieves the effect of fine adjustment. The top of the worm 54 is also fixedly connected to an internal hex nut, which only requires an internal hex wrench to rotate the worm 54, making the adjustment more convenient. The bottom of the adjusting block 3 is fixedly connected to the limiting plate 33 by bolts. The bottom of the sliding block 2 is provided with a limiting recess 22 that cooperates with the limiting plate 33. The open part of the sliding recess 21 is located in the limiting recess 22. By using the setting of the limiting plate 33, a good limiting effect can be achieved. A support rod is fixedly connected to the side of the sliding block 2 facing the base 1. The support rod passes through the base 1. A first waist-shaped hole is opened on the base 1 for the support rod to pass through. The setting of the first waist-shaped hole will not affect the movement of the sliding block 2, thereby ensuring the stability of the adjustment of the sliding block 2 and ensuring the quality of the overall structure. Scales are provided on both sides of one side of the sliding block 2, so that the adjustment distance can be better compared.

[0018] The adjusting block 3 is provided with an elastic locking structure to limit its relative displacement with respect to the sliding block 2 in the vertical direction. The adjusting block 3 has a groove 34 for accommodating the elastic locking structure. The spring locking structure includes a locking bolt 6 and a disc spring 61 sleeved on the locking bolt 6. A second oblong hole is provided on the inner bottom wall of the displacement groove 34 on the adjusting block 3. The locking bolt 6 passes through the second oblong hole and is bolted to the sliding block 2. The second oblong hole does not affect the movement of the adjusting block 3. The disc spring 61 is sleeved on the locking bolt 6, with one end abutting against the nut of the locking bolt 6 and the other end abutting against the inner bottom wall of the groove 34. The locking bolt 6 then presses against the disc spring. Tightening the disc spring 61 compresses it, applying elastic pressure along the axial direction of the locking bolt 6 towards the bottom wall of the groove 34, thus restricting the movement of the adjusting block 3 and providing a good self-locking effect. A shim 62 is fitted on the outer peripheral wall of the locking bolt 6 between the groove 34 and the disc spring 61. The shim 62 makes the force exerted by the disc spring 61 on the bottom wall of the groove 34 more stable, thereby making the relative fixation of the adjusting block 3 more stable. Moreover, the disc spring 61 has a certain degree of elasticity, and the applied external force is elastic pressure. Therefore, when using the fine adjustment mechanism 5, it will not affect the sliding of the adjusting block 3, thus ensuring the operation effect of the overall structure.

[0019] A protective component 7 is detachably connected at the groove 34. The protective component 7 has a clearance groove for avoiding the elastic locking structure. A fixing pin 71 is inserted through the adjusting block 3. The fixing pin 71 passes through the groove 34. The protective component 7 also has a fixing hole for the fixing pin 71 to pass through. When the fixing pin 71 passes through, the protective component 7 is stably fixed at the groove 34, thereby providing good protection for the elastic locking structure, preventing it from being exposed to the outside, and ensuring the service life of the overall structure.

[0020] Working principle: After the tool is fixed on the adjusting block 3, the coarse adjustment screw 41 can be rotated by using an Allen wrench, which drives the coarse drive block 42 threaded to it to slide along its axis, thereby driving the sliding block 2 to slide in the vertical direction, achieving the effect of coarse adjustment. After coarse adjustment, if fine adjustment is still needed, use an Allen wrench to rotate the worm gear 54. The worm gear meshing with it will rotate, causing the fine adjustment screw 52 connected to the worm gear key to rotate. This will drive the fine drive block 51 threaded onto it to move axially. Since the transmission cavity 321 is inclined, it has a guiding function, allowing the adjustment block 3 to slide vertically. Because the movement of the adjustment block 3 is driven by the movement of the fine drive block 51, the adjustment block 3 achieves the effect of fine adjustment. By using the cooperation of the coarse adjustment mechanism 4 and the fine adjustment mechanism 5, the position of the tool can be quickly adjusted, and the tool can be more accurately positioned at the corresponding horizontal height. The adjustment is fast and accurate, which can better suit various application scenarios and better ensure the machining quality of subsequent parts.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tool holder with precisely adjustable height, characterized in that: It includes a base (1) and an adjusting block (3) that is movably connected to one side of the base (1) in the vertical direction for fixing the tool. A sliding block (2) is slidably connected to the side of the base (1) facing the adjusting block (3) in the vertical direction. The adjusting block (3) is slidably connected to the side of the sliding block (2) away from the base (1). The base (1) is provided with a coarse adjustment mechanism (4) for driving the sliding block (2) to move. The sliding block (2) is provided with a fine adjustment mechanism (5) for driving the adjusting block (3) to move.

2. The tool holder with precisely adjustable height according to claim 1, characterized in that: The coarse adjustment mechanism (4) includes a coarse adjustment screw (41) rotatably connected to the base (1) and a coarse drive block (42) threadedly connected to the coarse adjustment screw (41). The base (1) has a sliding cavity (11) on the side near the sliding block (2). The coarse adjustment screw (41) extends into the sliding cavity (11). The coarse drive block (42) is fixedly connected to the sliding block (2) and extends into the sliding cavity (11) to be threadedly engaged with the coarse adjustment screw (41). The coarse drive block (42) and the inner wall of the sliding cavity (11) form a sliding engagement.

3. The tool holder with precisely adjustable height according to claim 1, characterized in that: The fine adjustment mechanism (5) includes a fine adjustment screw (52), a fine drive block (51), and a drive assembly. The adjustment block (3) has a protrusion (32) on one side facing the sliding block (2). The sliding block (2) has a sliding recess (21) for accommodating the protrusion (32). The protrusion (32) slides in cooperation with the inner wall of the sliding recess (21). The protrusion (32) has a transmission cavity (321) that is inclined in the length direction. The fine adjustment screw (52) extends into the transmission cavity (321) and is rotatably connected to the sliding block (2). The fine drive block (51) is threaded to the fine adjustment screw (52) and slides in cooperation with the inner wall of the transmission cavity (321). The drive assembly is used to drive the fine adjustment screw (52) to rotate.

4. The tool holder with precisely adjustable height according to claim 3, characterized in that: The drive assembly includes a worm gear (53) and a worm (54) that mesh with each other. The sliding block (2) has a receiving cavity. One end of the fine-tuning screw (52) extends into the receiving cavity and is keyed to the worm gear (53). The worm (54) is rotatably connected to the inner wall of the receiving cavity.

5. A tool holder with precisely adjustable height according to claim 1, characterized in that: The adjusting block (3) is provided with an elastic locking structure for limiting its relative displacement with the sliding block (2). The elastic locking structure includes a locking bolt (6) and a disc spring (61). The adjusting block (3) has a groove (34). The inner bottom wall of the groove (34) has a second waist-shaped hole. The locking bolt (6) passes through the disc spring (61) and the second waist-shaped hole in sequence and is threadedly connected to the sliding block (2). The disc spring (61) is in a compressed state under the pressure of the locking bolt (6).

6. A tool holder with precisely adjustable height according to claim 5, characterized in that: A protective member (7) is detachably connected to the groove (34), and the protective member (7) has a clearance groove for avoiding the elastic locking structure.

7. The tool holder with precisely adjustable height according to claim 1, characterized in that: The top of the adjusting block (3) is fixedly connected to a fixing member (31) with an L-shaped cross section by bolts. The extension of the fixing member (31) and the top of the adjusting block (3) form a gap for accommodating the tool. The fixing member (31) has a threaded hole, and the bolt passes through the threaded hole to press the tool.

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