Clamp for fixing cutter

Abstract

The invention discloses a tool fixing clamp, and relates to the technical field of machine manufacturing, the tool fixing clamp comprises a pressing assembly, an adjusting assembly and a clamp body, one end of the pressing assembly is connected with the adjusting assembly, the other end of the pressing assembly is provided with a conical working face, and when the pressing assembly is installed on the adjusting assembly, the small end of the conical working face faces a tool; the adjusting assembly can drive the pressing assembly to move in the direction close to the tool so that the conical working face can abut against the upper end of a fixing hole of the tool, and the tool can be pressed on the clamp body. The adjusting assembly can drive the pressing assembly to move in the direction away from the tool so that the pressing assembly can be disengaged from the tool. The mounting and dismounting convenience can be improved, the mounting and dismounting difficulty is reduced, the production efficiency is improved, the mounting and positioning reliability is ensured, and the adaptability is wide.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing technology, and in particular to a tool fixing fixture. Background Technology

[0002] In industrial production fields such as machining, cutting tools, as core processing components, directly affect the quality of processed products, processing efficiency, and tool life due to the stability and precision of their installation and fixation. Among these, superhard (PCD / PCBN) indexable inserts, as a new type of metal cutting tool, offer orders-of-magnitude improvements in surface finish, processing efficiency, and tool life compared to traditional tools. Fully automatic superhard (PCD / PCBN) insert grinding machines are specifically developed for grinding these inserts, featuring automatic loading and unloading, automatic online inspection, automatic online compensation, and automatic wheel resharpening, enabling automated production without human intervention. This machine tool places higher technical requirements on insert clamping fixtures: First, the inserts must be able to be clamped and released quickly and securely, without displacement under grinding resistance; second, high repeatability is required, with the positional deviation of the same insert during repeated clamping being less than 0.002mm; third, the fixtures need strong adaptability and quick interchangeability to accommodate different insert specifications.

[0003] Traditional tool fixing on machine tools often uses the conventional "clamping plate + bolt" fixing method, which has the following drawbacks: First, traditional clamps require manual tightening of multiple bolts to lock and loosen the clamping plates, which is cumbersome, consumes a lot of manual time, and reduces tool changing efficiency.

[0004] Secondly, traditional fixtures have a fixed design and can only accommodate inserts of a specific size, making them unsuitable for tools of different sizes. This results in a cumbersome, time-consuming, and labor-intensive tool change process. Furthermore, in actual production, some inserts may have dimensional deviations due to manufacturing tolerances, wear, and other factors. Traditional fixtures have fixed clamping clearances and cannot effectively accommodate these slightly dimensionally different inserts, leading to their inability to be installed and used properly. This wastes tool resources and disrupts production continuity.

[0005] The aforementioned tool holders are no longer sufficient to meet the diverse and high-precision machining needs of today. Therefore, there is an urgent need to develop a tool holder that is easy to assemble and disassemble and has wide adaptability. Summary of the Invention

[0006] The purpose of this invention is to provide a tool fixing fixture to solve the problems existing in the prior art, which can improve the convenience of disassembly and assembly, reduce the difficulty of disassembly and assembly, improve production efficiency, ensure the reliability of installation and positioning, and has wide applicability.

[0007] To achieve the above objectives, the present invention provides the following solution: This invention provides a tool fixing fixture, including a clamping component, an adjusting component, and a fixture body. One end of the clamping component is connected to the adjusting component, and the other end of the clamping component has a tapered working surface. When the clamping component is mounted on the adjusting component, the small end of the tapered working surface faces the tool. The adjusting component can drive the clamping component to move closer to the tool so that the tapered working surface abuts against the upper end of the tool's fixing hole and clamps the tool onto the fixture body. The adjusting component can also drive the clamping component to move away from the tool so that the clamping component disengages from the tool.

[0008] In one embodiment, the adjustment assembly includes a drive device, a clamping arm, a clamping arm shaft, a slider, and an elastic adjustment member. The clamping arm shaft passes through the clamping arm and is used to connect to a machine tool. The slider is connected to the output end of the drive device. The elastic adjustment member is disposed between the clamping arm and the clamp body. One end of the clamping arm can abut against the upper surface of the slider under the elastic force of the elastic adjustment member, and the other end of the clamping arm is connected to the clamping assembly. The drive device can drive the slider to reciprocate along a first direction. By moving the slider along the first direction, the clamping arm can rotate relative to the machine tool about the axis of the clamping arm shaft.

[0009] In one embodiment, a tool bar is fixedly connected to the clamp body, and the clamping assembly has a first surface on the side away from the clamping arm shaft. The lower end of the first surface extends away from the clamping arm shaft and closer to the tool relative to the upper end of the first surface. The clamping assembly is movably connected to the clamping arm, and the clamping arm can contact the first surface and apply a clamping force to the first surface to press the tool into a limiting groove on the side of the tool bar. The clamping force is directed in a direction close to the tool bar and close to the tool.

[0010] In one embodiment, the clamping assembly has a second surface on the side near the clamping arm shaft; the clamping arm has a mounting groove for accommodating the clamping assembly on the side near the cutter, the mounting groove having a third surface and a fourth surface; the shape of the third surface matches the shape of the first surface, and the third surface is used to contact the first surface; the end of the second surface away from the cutter is a convex curved surface, and the end of the fourth surface away from the cutter is a concave curved surface, the concave curved surface being able to contact the convex curved surface and form a rotating pair; a gap is left between the end of the second surface near the cutter and the end of the fourth surface near the cutter.

[0011] In one embodiment, the assembly further includes an elastic member, the two ends of which are respectively connected to the end of the second surface near the cutter and the end of the fourth surface near the cutter; the elastic member is capable of applying a force to the clamping assembly in a direction away from the clamping arm axis.

[0012] In one embodiment, a limiting post is further included, which can be fixedly connected to the clamping arm. The end of the clamping assembly away from the cutter is provided with a groove. The limiting post can extend into the groove and restrict the movement of the clamping assembly along a second direction, which is parallel to the axis of the clamping arm shaft.

[0013] In one embodiment, the limiting post and the clamping arm are detachably fixedly connected; when the limiting post exits the groove, the clamping assembly can move along the second direction under the action of external force to be installed into or removed from the mounting groove.

[0014] In one embodiment, the upper surface of the slider includes a first inclined section surface, one end of the first inclined section surface away from the driving device is inclined downward relative to the other end of the first inclined section surface, and the first direction is parallel to the axial direction of the clamping arm shaft.

[0015] In one embodiment, the upper surface of the slider further includes a second inclined section surface, the end of the second inclined section surface away from the driving device is inclined downward relative to the other end of the second inclined section surface, the end of the second inclined section surface away from the driving device is connected to the end of the first inclined section surface near the driving device, and the angle between the second inclined section surface and the horizontal plane is smaller than the angle between the first inclined section surface and the horizontal plane.

[0016] In one embodiment, the tool holder can be kept fixed at different positions on the clamp body to adjust the relative position of the clamping assembly and the fixing hole.

[0017] The present invention achieves the following technical effects compared to the prior art: This invention provides a tool fixing fixture, including a clamping component and an adjusting component. One end of the clamping component is connected to the adjusting component, and the other end of the clamping component has a tapered working surface. When the clamping component is installed on the adjusting component, the small end of the tapered working surface faces the tool. The adjusting component can drive the clamping component to move closer to the tool so that the tapered working surface abuts against the upper end of the tool's fixing hole and clamps the tool onto the fixture body. The adjusting component can also drive the clamping component to move away from the tool so that the clamping component disengages from the tool.

[0018] By adjusting the clamping assembly and moving it away from the tool, the clamping assembly disengages from the tool, releasing the tool's fixation and allowing it to be removed and replaced. Conversely, by adjusting the clamping assembly and moving it closer to the tool, the clamping assembly presses the tool against the fixture body, completing the tool installation. This improves the ease of assembly and disassembly, reduces the difficulty of assembly and disassembly, and helps improve production efficiency. Furthermore, this invention uses a tapered working surface to clamp the fixing hole. When changing to tools of different sizes (e.g., tools with fixing holes of different thicknesses or diameters) or when the tool's fixing hole has a certain dimensional deviation, adjusting the downward movement of the clamping assembly allows for adaptation between the tapered working surface and the fixing hole, enabling assembly and providing wide adaptability. In addition to applying clamping force to the tool, the tapered working surface of this invention can also cooperate with the fixing hole to form a radial limit on the tool, improving the clamping effect and reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view with partial cross-section of the tool fixing fixture in the clamped state of the present invention; Figure 2 for Figure 1 The left view; Figure 3 for Figure 1 The right view; Figure 4 for Figure 3 A magnified view of a section of section VI; Figure 5 This is a rear view of the tool fixing fixture in the clamped state of the present invention, with a partial cross-section. Figure 6 for Figure 5 A magnified view of part C; Figure 7 for Figure 5 Sectional view of AA; Figure 8 for Figure 5 The right view; Figure 9 This is a front view of the tool fixing clamp in the loosened state in this invention; Figure 10 for Figure 9 The right view; Figure 11 for Figure 10 A magnified view of section VII; Figure 12 This is a schematic diagram of the pressure head structure in this invention; Figure 13 This is a schematic diagram of the slider structure in this invention; Figure 14 This is a schematic diagram of the tool structure in this invention; Figure 15 for Figure 14 A cross-sectional view of HH; In the figure: 1. Clamping assembly; 101. Conical working surface; 102. First surface; 103. Convex curved surface; 104. Clamping block; 105. Clamping head; 2. Adjustment assembly; 201. Drive device; 202. Clamping arm; 203. Clamping arm shaft; 204. Slider; 205. Mounting groove; 206. Fourth surface; 207. Concave curved surface; 208. Gap; 209. Bearing; 210. Slider seat; 211. First inclined section surface; 212. Second inclined section surface; 3. Cutting tool; 301. Fixing hole; 4. Limiting post; 5. Elastic component; 6. Horizontal pad; 7. Rotary bushing; 8. Tool pad; 9. Tool holder. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "center," "longitudinal," "transverse," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "clockwise," and "counterclockwise," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The purpose of this invention is to provide a tool fixing fixture to solve the problems existing in the prior art, which can improve the convenience of disassembly and assembly, reduce the difficulty of disassembly and assembly, improve production efficiency, ensure the reliability of installation and positioning, and has wide applicability.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-15 As shown, this embodiment provides a tool fixing fixture, including a clamping component 1, an adjusting component 2, and a fixture body. One end of the clamping component 1 is connected to the adjusting component 2, and the other end of the clamping component 1 has a tapered working surface 101. When the clamping component 1 is installed on the adjusting component 2, the small end of the tapered working surface 101 faces the tool 3. The adjusting component 2 can drive the clamping component 1 to move closer to the tool 3 so that the tapered working surface 101 abuts against the upper end of the fixing hole 301 of the tool 3 and clamps the tool 3 onto the fixture body. The adjusting component 2 can drive the clamping component 1 to move away from the tool 3 so that the clamping component 1 disengages from the tool 3.

[0026] By adjusting component 2, the clamping component 1 is moved away from the tool 3, causing the clamping component 1 to disengage from the tool 3. At this point, the tool 3 is released from its fixation and can be removed and replaced. Alternatively, by adjusting component 2, the clamping component 1 is moved closer to the tool 3, pressing the tool 3 onto the fixture body to complete the installation of the tool 3. This improves the ease of assembly and disassembly, reduces the difficulty of assembly and disassembly, and helps improve production efficiency. Furthermore, this embodiment uses a tapered working surface 101 to clamp the fixing hole 301. When replacing the tool 3 with a different size or specification (e.g., a tool 3 with a fixing hole 301 of different thickness or diameter) or when the fixing hole 301 of the tool 3 has a certain dimensional deviation, the tapered working surface 101 can be adapted to the fixing hole 301 by adjusting the downward movement of the clamping component 1, thus achieving assembly and providing wide adaptability. In this embodiment, the tapered working surface 101 can not only apply clamping force to the tool 3, but also cooperate with the fixing hole 301 to form a radial limit on the tool 3, which can improve the clamping effect and reliability.

[0027] In some embodiments, the adjusting assembly 2 includes a drive device 201, a clamping arm 202, a clamping arm shaft 203, a slider 204, and an elastic adjusting member. The clamping arm shaft 203 passes through the clamping arm 202 and is used to connect to the machine tool. The slider 204 is connected to the output shaft of the drive device 201. The elastic adjusting member is disposed between the clamping arm 202 and the fixture body. One end of the clamping arm 202 can abut against the upper surface of the slider 204 under the elastic force of the elastic adjusting member, and the other end of the clamping arm 202 is connected to the clamping assembly 1. The drive device 201 can drive the slider 204 to reciprocate along a first direction. The slider 204, by moving along the first direction, can cause the clamping arm 202 to rotate relative to the machine tool about the axis of the clamping arm shaft 203. Figure 1 As shown, according to the lever principle, when the driving device 201 drives the left end of the clamping arm 202 to rotate upward around the clamping arm shaft 203 via the slider 204, the clamping assembly 1 moves downward to clamp the cutter 3. When the driving device 201 drives the left end of the clamping arm 202 to rotate downward around the clamping arm shaft 203 via the slider 204, the clamping assembly 1 moves upward to disengage from the cutter 3.

[0028] In some embodiments, the clamping arm 202 is rotatably connected to the clamping arm shaft 203, and the clamping arm shaft 203 is fixedly connected to the machine tool.

[0029] In some implementations, the size and shape of the fixing hole 301 are determined by national standards according to the blade model.

[0030] In some embodiments, a tool holder 9 is fixedly connected to the clamp body, and the clamping assembly 1 has a first surface 102 on the side away from the clamping arm shaft 203. The lower end of the first surface 102 extends relative to the upper end of the first surface 102 towards the end away from the clamping arm shaft 203 and closer to the tool 3. Figure 1 As shown, the lower end of the first surface 102 is inclined to the right; the clamping assembly 1 is movably connected to the clamping arm 202, which can contact the first surface 102 and apply a clamping force to the first surface 102 to clamp the tool 3 in the limiting groove on the side of the tool bar 9. The clamping force is directed towards the tool bar 9 (also towards the clamping arm shaft 203) and towards the tool 3. This downwardly inclined clamping force can not only clamp and fix the tool 3, but also apply a component force towards the limiting groove to the tool 3, so that the corresponding position of the tool 3 can make good contact with the limiting groove, thereby effectively limiting the tool 3.

[0031] In one exemplary embodiment, the first surface 102 is a plane, the cutter 3 is rhomboid in shape, and the limiting groove is a V-shaped groove. When pressed, the two inner sidewalls of the V-shaped groove contact the two outer sidewalls of the cutter 3 respectively, and limit the cutter 3.

[0032] In some embodiments, the clamping assembly 1 has a second surface on the side near the clamping arm shaft 203; the clamping arm 202 has a mounting groove 205 for accommodating the clamping assembly 1 on the side near the cutter 3, the mounting groove 205 having a third surface and a fourth surface 206; the shape of the third surface matches the shape of the first surface 102, and the third surface is used to contact the first surface 102; the end of the second surface away from the cutter 3 is a convex curved surface 103, and the end of the fourth surface 206 away from the cutter 3 is a concave curved surface 207, the concave curved surface 207 can contact the convex curved surface 103 and form a rotating pair; a gap 208 is left between the end of the second surface near the cutter 3 and the end of the fourth surface 206 near the cutter 3. The clamping arm 202 applies a force to the first surface 102 through the third surface, and since both are inclined surfaces, a downward inclined force can be applied to the clamping assembly 1, so as to... Figure 1 Taking this as an example, the direction of the force is downward to the left. Since the concave curved surface 207 and the convex curved surface 103 can match and cooperate with each other, under the action of this downward inclined force, the clamping assembly 1 can rotate in the direction of the clamping arm shaft 203, thereby applying a leftward force to the cutter 3, so that the cutter 3 is well clamped in the limiting groove.

[0033] In some embodiments, a limiting post 4 is also included. The limiting post 4 can be fixedly connected to the clamping arm 202. A groove is provided at the end of the clamping assembly 1 away from the cutter 3. The limiting post 4 can extend into the groove and restrict the movement of the clamping assembly 1 along a second direction, which is parallel to the axis of the clamping arm shaft 203. Specifically, after the limiting post 4 extends into the groove, it can contact the two inner sidewalls of the groove in the second direction to restrict the movement of the clamping assembly 1 along the second direction.

[0034] In some embodiments, the limiting post 4 is detachably fixedly connected to the clamping arm 202; when the limiting post 4 exits the groove, the clamping assembly 1 can move along the second direction under the action of external force to be installed into or removed from the mounting groove 205.

[0035] In some embodiments, when the clamping assembly 1 clamps the cutter 3, a gap 208 remains between the end of the second surface near the cutter 3 and the end of the fourth surface 206 near the cutter 3. Specifically, the clamping assembly 1 still has a 2° inward rotation space. The tilt angle between the third surface and the first surface 102 is 135°.

[0036] In some embodiments, an elastic member 5 is also included, with its two ends connected to the end of the second surface near the cutter 3 and the end of the fourth surface 206 near the cutter 3, respectively. The elastic member 5 can apply a force to the second surface in a direction away from the fourth surface 206. When the clamping arm 202 drives the clamping assembly 1 to move upward, the clamping assembly 1 can rotate in a direction away from the clamping arm shaft 203 under the elastic force of the elastic member 5.

[0037] In some embodiments, a groove is provided on the second surface near the end of the cutter 3, and the right end of the elastic member 5 is connected to the inner bottom wall of the groove.

[0038] In some embodiments, the upper surface of the slider 204 includes a first inclined section surface 211, one end of the first inclined section surface 211 away from the drive device 201 being inclined downward relative to the other end of the first inclined section surface 211, the first direction being parallel to the axial direction of the clamping arm shaft 203. For example... Figure 3 As shown, when the slider 204 moves to the right, the end of the clamping arm 202 away from the clamping assembly 1 is raised, thereby causing the clamping assembly 1 to descend; when the slider 204 moves to the left, the end of the clamping arm 202 away from the clamping assembly 1 remains in contact with the upper surface of the slider 204 under the elastic force of the adjusting elastic element, and the end of the clamping arm 202 away from the clamping assembly 1 descends, thereby causing the clamping assembly 1 to rise.

[0039] In some embodiments, an elastic adjusting member is positioned on the clamping arm 202 near the cutter 3. This elastic adjusting member is a compression spring that consistently provides an upward force (approximately 10N) to the end of the clamping arm 202 near the cutter 3. This force is much smaller than the force exerted on the clamping arm 202 by the working surface of the slider 204. When the slider 204 moves away from the drive device 201, it further compresses the elastic adjusting member, causing the clamping assembly 1 to descend and clamp the cutter 3. When the slider 204 moves towards the drive device 201, the end of the clamping arm 202 away from the cutter 3 remains in contact with the working surface of the slider 204 under the elastic force of the adjusting member.

[0040] In some embodiments, an elastic adjustment member is provided between the clamping arm 202 and the blade shank 9 below the clamping arm 202.

[0041] In some embodiments, the upper surface of the slider 204 further includes a second inclined section surface 212, one end of the second inclined section surface 212 away from the driving device 201 is inclined downward relative to the other end of the second inclined section surface 212, one end of the second inclined section surface 212 away from the driving device 201 is connected to the end of the first inclined section surface 211 near the driving device 201, and the angle between the second inclined section surface 212 and the horizontal plane is smaller than the angle between the first inclined section surface 211 and the horizontal plane.

[0042] In some embodiments, the angle between the second inclined section surface 212 and the horizontal plane is 5°, and the angle between the first inclined section surface 211 and the horizontal plane is 15°.

[0043] In some embodiments, the drive device 201 is a cylinder. During the fixture assembly stage, the following adjustments are made: the fixture is in clamping state when the contact point between the slider 204 and the clamping arm 202 is located approximately at the middle position of the upper surface of the slider 204. The height of the slider seat 210 below the slider 204 can be adjusted by grinding to thin it or by raising it. For every 1mm horizontal adjustment, the slider seat 210 needs to be thinned or raised by approximately 0.087mm to eliminate the influence of manufacturing errors on the height control of the clamping assembly 1, ensuring that the clamping assembly 1 can provide sufficient clamping force to the tool 3 in the clamping state. Based on the initial state (cylinder piston fully retracted), when the cylinder piston extends approximately 10mm, the output end of the clamping arm 202 is raised by approximately 1mm; this position is the fixture clamping state.

[0044] In some embodiments, a bearing 209 is provided at the end of the clamping arm 202 away from the clamping assembly 1. The outer wall of the bearing 209 contacts the upper surface of the slider 204. That is, the clamping arm 202 abuts against the upper surface of the slider 204 through the bearing 209. When the slider 204 moves, the bearing 209 rolls along the upper surface of the slider 204, causing the end of the clamping arm 202 away from the clamping assembly 1 to rise and fall. This embodiment can reduce the friction between the slider 204 and the clamping arm 202 when the slider 204 moves.

[0045] In some embodiments, a horizontal pad 6 is provided between the lower surface of the clamping arm 202 and the upper surface of the cutter 3. The horizontal pad 6 is an auxiliary tool used for setting and adjusting the fixture to ensure that the fixture is set such that the clamping arm 202 is basically in a horizontal position when in the clamping state.

[0046] In some embodiments, the tool holder 9 can be kept fixed at different positions on the clamp body to adjust the relative position of the clamping assembly 1 and the fixing hole 301.

[0047] In some embodiments, the clamping arm shaft 203 is a pin. Based on the center point position of the fixing hole 301 of the series cutter 3, appropriate thickness rotating bushings 7 are installed on both sides of the clamping arm 202 and outside the clamping arm shaft 203 to adjust the position of the clamping arm 202 on the clamping arm shaft 203, thereby adjusting the position of the pressure head 105 of the clamping assembly 1, so that the center of the pressure head 105 and the center of the fixing hole 301 are in a direction parallel to the axial direction of the clamping arm shaft 203. Figure 2 Alignment (as shown in the left-right direction). In one exemplary embodiment, the position of the pressure head 105 along the axial direction of the pressure arm shaft 203 is adjusted by adjusting the flange thickness of the rotating bushing 7. The flange thickness has an adjustment amount of 0.5 mm.

[0048] In some embodiments, the clamping assembly 1 includes a clamping block 104 and a clamping head 105. The upper end of the clamping block 104 has a first surface 102 and a second surface for engaging with the clamping arm 202. The lower end of the clamping block 104 is detachably connected to the clamping head 105, and the lower end of the clamping head 105 is provided with a tapered working surface 101.

[0049] In some embodiments, the fixture body is provided with multiple strip-shaped holes, the length direction of each strip-shaped hole being parallel to the horizontal direction and perpendicular to the axial direction of the clamping arm shaft 203. The tool bar 9 is fixed at different positions in the strip-shaped holes by bolts, so as to change the position of the tool bar 9 on the fixture body, so that the center of the pressure head 105 and the center of the fixing hole 301 are in a direction perpendicular to the axial direction of the clamping arm shaft 203. Figure 1 Alignment (as shown in the left-right direction). Before processing, the center of the pressure head 105 is made to coincide with the center of the fixing hole 301 by the cooperation of the rotating bushing 7 and the strip hole.

[0050] In some implementations, the basic data for the tool fixing fixture structure are as follows: Piston area: π × 1.6 2 ≈8.04cm 2 ; Input air pressure: 0.5 MPa ≈ 5 kgf / cm² 2 ; Cylinder thrust ≈ 40.2 kgf; The thrust conversion ratio of the slider 204 with a 5° inclined plane is: 1 / tan5≈11.43X; The lever arm conversion ratio of the clamping arm 202 is 46.5 / 65~0.72X; When the input air pressure is 0.5 MPa, the pressure exerted on the blade by the pressure head 105 is 40.2 × 11.43 × 0.72 = 331 kgf.

[0051] In some embodiments, the cutting tool 3 is a blade of type VBGW1604.

[0052] It should be noted that changing the blade specification requires replacing the corresponding blade holder 9 and blade pad 8 (the blade pad 8 is placed between the blade holder 9 and the blade). If necessary, the corresponding clamping arm 202, clamping block 104, and clamping head 105 also need to be replaced. The clamping head 105 is a consumable part and needs to be replaced in a timely manner based on the positioning accuracy when the blade is clamped and the firmness during grinding.

[0053] In some implementations, the fixture body is fixedly connected to the machine tool frame.

[0054] In some implementations, the machine tool is a grinding machine.

[0055] In some embodiments, the present invention is adapted to fully automatic superhard (PCD / PCBN) tool grinding machines. It should be noted that the fixture of this embodiment is not limited to use in fully automatic superhard (PCD / PCBN) tool grinding machines, but can also be applied to any other equipment requiring automatic tool clamping.

[0056] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A tool fixing fixture, characterized in that: The fixture includes a clamping assembly, an adjusting assembly, and a clamp body. One end of the clamping assembly is connected to the adjusting assembly, and the other end of the clamping assembly has a tapered working surface. When the clamping assembly is mounted on the adjusting assembly, the smaller end of the tapered working surface faces the cutting tool. The adjusting assembly can move the clamping assembly closer to the cutting tool so that the tapered working surface abuts against the upper end of the fixing hole of the cutting tool and clamps the cutting tool onto the clamp body. The adjusting assembly can also move the clamping assembly away from the cutting tool so that the clamping assembly disengages from the cutting tool.

2. The tool fixing fixture according to claim 1, characterized in that: The adjustment assembly includes a drive device, a clamping arm, a clamping arm shaft, a slider, and an elastic adjustment member. The clamping arm shaft passes through the clamping arm and is used to connect to the machine tool. The slider is connected to the output end of the drive device. The elastic adjustment member is disposed between the clamping arm and the clamp body. One end of the clamping arm can abut against the upper surface of the slider under the elastic force of the elastic adjustment member, and the other end of the clamping arm is connected to the clamping assembly. The drive device can drive the slider to reciprocate along a first direction. By moving the slider along the first direction, the clamping arm can rotate relative to the machine tool about the axis of the clamping arm shaft.

3. The tool fixing fixture according to claim 2, characterized in that: A tool bar is fixedly connected to the clamp body. The clamping assembly has a first surface on the side away from the clamping arm shaft. The lower end of the first surface extends away from the clamping arm shaft and closer to the tool relative to the upper end of the first surface. The clamping assembly is movably connected to the clamping arm. The clamping arm can contact the first surface and apply a clamping force to the first surface to press the tool into a limiting groove on the side of the tool bar. The clamping force is directed towards the tool bar and closer to the tool.

4. The tool fixing fixture according to claim 3, characterized in that: The clamping assembly has a second surface on the side near the clamping arm shaft; the clamping arm has a mounting groove for accommodating the clamping assembly on the side near the cutter, the mounting groove having a third surface and a fourth surface; the shape of the third surface matches the shape of the first surface, and the third surface is used to contact the first surface; the end of the second surface away from the cutter is a convex curved surface, and the end of the fourth surface away from the cutter is a concave curved surface, the concave curved surface can contact the convex curved surface and form a rotating pair; a gap is left between the end of the second surface near the cutter and the end of the fourth surface near the cutter.

5. The tool fixing fixture according to claim 4, characterized in that: It also includes an elastic component, the two ends of which are respectively connected to the end of the second surface near the cutter and the end of the fourth surface near the cutter; the elastic component is capable of applying a force to the clamping assembly in a direction away from the clamping arm axis.

6. The tool fixing fixture according to claim 4, characterized in that: It also includes a limiting post, which can be fixedly connected to the clamping arm. The end of the clamping assembly away from the cutter is provided with a groove. The limiting post can extend into the groove and restrict the movement of the clamping assembly along a second direction, which is parallel to the axis of the clamping arm shaft.

7. The tool fixing fixture according to claim 6, characterized in that: The limiting post and the clamping arm are detachably fixedly connected; when the limiting post exits the groove, the clamping assembly can move along the second direction under the action of external force to be installed into or removed from the mounting groove.

8. The tool fixing fixture according to claim 2, characterized in that: The upper surface of the slider includes a first inclined section surface, one end of the first inclined section surface away from the driving device is inclined downward relative to the other end of the first inclined section surface, and the first direction is parallel to the axial direction of the pressing arm shaft.

9. The tool fixing fixture according to claim 8, characterized in that: The upper surface of the slider also includes a second inclined section surface. The end of the second inclined section surface away from the driving device is inclined downward relative to the other end of the second inclined section surface. The end of the second inclined section surface away from the driving device is connected to the end of the first inclined section surface near the driving device. The angle between the second inclined section surface and the horizontal plane is smaller than the angle between the first inclined section surface and the horizontal plane.

10. The tool fixing fixture according to claim 3, characterized in that: The tool holder can be kept fixed at different positions on the clamp body to adjust the relative position of the clamping assembly and the fixing hole.

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