A tool clamping device and automatic measuring equipment thereof

Abstract

The present invention discloses a tool clamping device and automatic measuring equipment thereof, including a mounting sleeve, wherein a universal coupling and a collet driven to rotate by the universal coupling are arranged in the mounting sleeve, wherein the collet comprises a chuck for clamping the tool and a chuck set sleeved outside the chuck, wherein a reset mechanism is arranged in the mounting sleeve to make the chuck always have a clamping tendency, wherein an air cavity and an air inlet are arranged on the side wall of the mounting sleeve, wherein a piston for controlling the upward movement of the chuck to open the chuck is arranged in the air cavity, wherein the air inlet is connected to the air cavity on the lower side of the piston; wherein a tool adjustment assembly for adjusting the position of the tool is arranged at the upper end of the mounting sleeve. The present invention simplifies the structure of the tool clamping device, reduces the difficulty of processing, improves the structural strength of the universal coupling, and makes the universal coupling rotate more flexibly, so as to better adjust the angle of the tool and improve the measurement accuracy of the tool.

Description

Technical Field

[0001] The invention relates to the technical field of tool processing equipment, and in particular to a tool clamping device and automatic measuring equipment thereof. Background Art

[0002] Metal milling is the main manufacturing method for parts, and milling tools are the key factor supporting and promoting the advancement of milling technology. The widespread application of efficient CNC machine tools has brought modern milling technology to a new stage. High-precision tools are the basic prerequisite for expensive CNC machine tools to exert their efficient processing capabilities. Tool measurement is an important part of high-precision tool processing. Tool measurement includes the detection of tool diameter, contour, helix and end face.

[0003] During the measurement process, the tool needs to be fixedly inserted into the clamping mechanism, and the tool needs to be rotated according to the measurement requirements. The clamping mechanism is provided with a collet, which is connected to the driving mechanism through a universal coupling. The collet includes an inner collet and a collet set arranged outside the inner collet. When working, the collet is clamped or opened by controlling the movement of the inner collet relative to the collet set. At present, the clamping or opening of the collet is mainly controlled by the cylinder driving the movement of the inner collet. Since the cylinder is arranged at the bottom of the collet, a slender driving rod needs to be arranged at the output end of the cylinder to pass through the universal coupling, and such a driving method requires a through hole to be arranged on the universal coupling, which increases the processing difficulty, reduces the strength of the universal coupling and the driving rod, and affects the rotation adjustment angle of the universal coupling, thereby affecting the measurement accuracy of the tool. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a tool clamping device and an automatic measuring device thereof, which can simplify the structure of the clamping device, reduce the processing difficulty and improve the tool measuring accuracy.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tool clamping device comprises a mounting sleeve, wherein a universal coupling and a collet driven to rotate by the universal coupling are arranged in the mounting sleeve, wherein the collet comprises a chuck for clamping the tool and a chuck set sleeved outside the chuck, wherein a reset mechanism for making the chuck always have a clamping tendency is arranged in the mounting sleeve, wherein an air cavity and an air inlet are arranged on the side wall of the mounting sleeve, wherein a piston for controlling the chuck to move upward so as to open the chuck is arranged in the air cavity, wherein the air inlet is communicated with the air cavity below the piston;

[0007] The upper end of the mounting sleeve is provided with a tool adjustment assembly for adjusting the position of the tool, and the tool adjustment assembly includes a limit block and a clamping block relatively arranged on both sides of the opening of the chuck, and the side of the limit block facing the clamping block is provided with a clamping groove for positioning the tool, and the side of the limit block is provided with a push piece for adjusting the position of the limit block, and the side of the clamping block is provided with a clamping drive mechanism for controlling the clamping block to move toward the limit block to fix the tool in the clamping groove.

[0008] In the present invention, an air cavity is provided on the side wall of the mounting sleeve, so that the movement of the piston in the air cavity is controlled by air pressure, and the movement of the chuck relative to the chuck kit is controlled by the piston to realize the opening of the collet, thereby eliminating the need to punch holes on the universal coupling, simplifying the structure of the tool clamping device, reducing the processing difficulty, improving the structural strength of the universal coupling, and making the universal coupling more flexible in rotation, so that the angle of the tool can be better adjusted and the measurement accuracy of the tool can be improved; by providing a tool adjustment component, the position of the tool can be adjusted through the tool adjustment component, so that the tool can be in the best detection position, further improving the detection accuracy of the tool, and improving the factory quality of the tool.

[0009] As a preferred technical solution, a connecting seat is provided at the upper end of the universal coupling, a push seat is embedded in the connecting seat, the chuck is connected to the push seat, the chuck kit is connected to the connecting seat, the push seat is provided with a push rod extending downward, and the lower end of the push rod is in contact with the upper end surface of the piston.

[0010] As a preferred technical solution, the upper end of the connecting seat is provided with an embedding groove adapted to the push seat, the push seat is provided with a limiting protrusion extending radially outward, the push rod extends downward from the lower surface of the limiting protrusion, the side wall of the embedding groove is provided with a limiting groove adapted to the limiting protrusion, and the bottom of the limiting groove is provided with a first through hole adapted to the push rod. During assembly, the push seat is arranged in the embedding groove, the limiting protrusion is stuck in the limiting groove, and the push rod extends downward through the first through hole to contact the piston. Through the cooperation of the limiting groove and the limiting protrusion, the push seat can only move up and down relative to the connecting seat, and cannot rotate relative to the connecting seat, so that the universal coupling can simultaneously drive the chuck and the chuck kit to rotate.

[0011] As a preferred technical solution, the reset mechanism is a compression spring, and the lower end of the chuck kit is provided with a spring positioning groove corresponding to the compression spring. During assembly, the upper end of the compression spring abuts against the top wall of the spring positioning groove, and the lower end abuts against the upper surface of the push seat.

[0012] As a preferred technical solution, the connecting seat is provided with a second through hole running through the upper and lower parts, and the lower end of the chuck kit is provided with a fixing hole corresponding to the second through hole. During assembly, a screw or bolt passes through the second through hole and is threadedly connected to the fixing hole to fix the chuck kit on the connecting seat.

[0013] As a preferred technical solution, the upper end of the universal coupling is provided with a first connecting hole, the lower end of the connecting seat is provided with a first connecting column corresponding to the first connecting hole, and the connecting seat is connected to the universal coupling by inserting the first connecting column into the first connecting hole; the upper end of the push seat is provided with a second connecting column, the lower end of the chuck is provided with a second connecting hole corresponding to the second connecting column, and the second connecting column is threadedly connected to the second connecting hole.

[0014] As a preferred technical solution, a mounting sleeve is fixedly provided at the upper end of the base, a driving motor is provided on the side of the mounting sleeve, a synchronous wheel is fixedly provided at the lower end of the universal coupling, and the driving motor drives the synchronous wheel to rotate through a synchronous belt.

[0015] As a preferred technical solution, the mounting sleeve includes a lower cylinder and an upper cylinder installed on the upper end of the lower cylinder, the connection between the upper cylinder and the lower cylinder forms an air cavity, the air cavity and the piston are both arranged in a ring shape, the air inlet is arranged on the outer surface of the lower cylinder, the upper end of the lower cylinder is provided with a first positioning ring adapted to the shape of the piston, and the piston is sleeved on the outside of the first positioning ring.

[0016] As an optimal technical scheme, the push piece includes a rear push piece, a left push piece and a right push piece, the upper end of the mounting sleeve is fixedly provided with an adjusting mounting seat, the adjusting mounting seat is provided with a sliding seat, the sliding seat is provided with a U-shaped groove adapted to the limit block, the rear side of the sliding seat is provided with a rear mounting block, the rear push piece is installed in the rear mounting block, and one end extends out of the rear mounting block and conflicts with the rear end of the limit block, the left and right sides of the sliding seat are respectively provided with a left mounting block and a right mounting block, the left and right push pieces are respectively installed on the left and right mounting blocks, and the left and right push pieces conflict with the left and right sides of the sliding seat respectively, the adjusting mounting seat is provided with a T-shaped mounting groove, a plurality of sliding blocks are slidably provided in the T-shaped mounting groove, and the left mounting block, the right mounting block and the sliding seat are respectively installed on the corresponding sliding blocks. By arranging a T-shaped mounting groove on the adjustment mounting seat, arranging a slider in the T-shaped mounting groove, and arranging the left-side push piece and the right-side push piece on the left mounting block and the right mounting block respectively, the positions of the left-side push piece and the right-side push piece can be better adjusted, the adjustment accuracy can be improved, and the detection quality of the tool can be improved.

[0017] The present invention also provides an automatic tool measuring device, comprising a frame, on which are provided a feeding conveyor belt for the tool to be tested, a unloading conveyor belt for good tool, a tool detection mechanism and the aforementioned tool clamping device, wherein the tool clamping device is used to clamp the tool to be tested and send the tool to be tested to the tool detection mechanism for detection, and the frame is also provided with a material transfer robot for transferring the tool to be tested to the tool clamping device.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, an air cavity is arranged on the side wall of the mounting sleeve, so that the movement of the piston in the air cavity is controlled by air pressure, and the movement of the chuck relative to the chuck kit is controlled by the piston to realize the opening of the collet, thereby eliminating the need to perforate the universal coupling, simplifying the structure of the tool clamping device, reducing the processing difficulty, improving the structural strength of the universal coupling, and making the universal coupling more flexible in rotation, so that the angle of the tool can be better adjusted, the measurement accuracy of the tool can be improved, and the detection accuracy of the tool can reach ±1μm; by arranging a tool adjustment component, the position of the tool can be adjusted by the tool adjustment component, so that the tool can be in the best detection position, further improving the detection accuracy of the tool, and improving the factory quality of the tool.

[0019] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an assembly structure diagram of the tool clamping device of the present invention;

[0021] Figure 2 is a cross-sectional structural diagram of a tool clamping device of the present invention;

[0022] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0023] Figure 4 It is an exploded view of the internal structure of the tool clamping device of the present invention;

[0024] Figure 5 is an exploded view of the mounting sleeve of the tool clamping device of the present invention;

[0025] Figure 6 It is an exploded structural diagram of a tool adjustment assembly of a tool clamping device of the present invention;

[0026] Figure 7 It is an assembly structure diagram of the tool automatic measuring device of the present invention.

[0027] Description of the accompanying drawings:

[0028] 100. Tool clamping device;

[0029] 10. base; 20. mounting sleeve; 21. lower cylinder; 211. first positioning ring;

[0030] 212, step surface; 22, upper cylinder; 221, second positioning ring; 222, installation step;

[0031] 23. air cavity; 24. air inlet; 25. piston; 30. universal coupling; 31. first connecting hole; 32. synchronous wheel; 40. collet; 41. chuck; 42. chuck kit; 43. spring positioning groove;

[0032] 44, fixing hole; 50, driving motor; 51, synchronous belt; 60, tool adjustment assembly;

[0033] 61, limit block; 611, clamping groove; 62, clamping block; 621, clamping cylinder; 63, adjustment mounting seat; 631, T-shaped mounting groove; 632, slider; 64, slide seat; 641, U-shaped groove; 642, card slot;

[0034] 65, rear mounting block; 651, rear push piece; 66, left mounting block; 661, left push piece;

[0035] 67, right mounting block; 671, right side push member; 70, connecting seat; 71, embedding groove; 72, limiting groove; 73, first through hole; 74, second through hole; 75, first connecting column; 80, push seat;

[0036] 81. push rod; 82. limit convex block; 83. second connecting column; 90. tool;

[0037] 200, rack; 210, conveyor belt for loading tools to be tested; 220, conveyor belt for unloading tools of good quality; 230, tool detection mechanism; 240, material transfer manipulator; 250, tray for placing defective products;

[0038] 260. Rotation drive mechanism; 270. Material transfer drive module. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have specific directions, be constructed and operated in specific directions. Therefore, they should not be understood as limitations on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1-6 As shown, a tool clamping device 100 includes a base 10, a mounting sleeve 20 is fixedly provided at the upper end of the base 10, a universal coupling 30 and a collet 40 driven to rotate by the universal coupling 30 are arranged in the mounting sleeve 20, the lower end of the universal coupling 30 is rotatably mounted in the mounting sleeve 20 through a bearing, a driving motor 50 is provided on the side of the mounting sleeve 20, a synchronous wheel 32 is fixedly provided at the lower end of the universal coupling 30, and the driving motor 50 drives the synchronous wheel 32 to rotate through a synchronous belt 51. The collet 40 includes a collet 41 for clamping the tool 90 and a collet kit 42 sleeved on the outside of the collet 41. The mounting sleeve 20 is provided with a reset mechanism that allows the collet 41 to always have a clamping tendency. The side wall of the mounting sleeve 20 is provided with an air cavity 23 and an air inlet 24. The air cavity 23 is provided with a piston 25 for controlling the upward movement of the collet 41 to open the collet 41. The air inlet 24 is connected to the air cavity 23 on the lower side of the piston 25. When the collet 41 needs to be opened, the gas enters the air cavity 23 from the air inlet 24 and pushes the piston 25 to move upward. The upper end of the mounting sleeve 20 is provided with a tool adjustment assembly 60 for adjusting the position of the tool 90.

[0042] In the present invention, the outer side of the upper end of the chuck 41 and the inner side of the upper end of the chuck sleeve 42 are both provided with a conical inclined surface extending from top to bottom toward the axis of the chuck 41. When the chuck 41 moves downward relative to the chuck sleeve 42, the chuck 41 is in a clamped state due to the squeezing of the conical inclined surface. When the chuck 41 moves upward relative to the chuck sleeve 42, the chuck 41 is in an open state due to the release of the restriction of the conical inclined surface. At this time, the tool can be inserted from the clamping opening of the upper end of the chuck 41. By setting an air cavity 23 on the side wall of the mounting sleeve 20, the piston 25 in the air cavity 23 is controlled to move by air pressure, and the chuck 41 is controlled to move relative to the chuck kit 42 by the piston 25 to open the collet 40, so that there is no need to punch holes on the universal coupling 30, which simplifies the structure of the tool clamping device 100, reduces the processing difficulty, improves the structural strength of the universal coupling 30, and makes the universal coupling 30 more flexible to rotate, better adjust the angle of the tool, and improve the measurement accuracy of the tool; by setting the tool adjustment component 60, the position of the tool can be adjusted by the tool adjustment component 60, so that the tool can be in the best detection position, further improving the detection accuracy of the tool and improving the factory quality of the tool. It should be noted that the universal coupling 30 in this application is a three-joint coupling commonly used in the field.

[0043] In the present invention, a connecting seat 70 is provided at the upper end of the universal coupling 30, a push seat 80 is embedded on the connecting seat 70, the chuck 41 is connected to the push seat 80, the chuck kit 42 is connected to the connecting seat 70, and the push seat 80 is provided with a push rod 81 extending downward, and the lower end of the push rod 81 is in contact with the upper end surface of the piston 25.

[0044] Specifically, the upper end of the connecting seat 70 is provided with an embedding groove 71 adapted to the pushing seat 80, and the pushing seat 80 is provided with a limiting protrusion 82 extending radially outward, and the pushing rod 81 extends downward from the lower surface of the limiting protrusion 82, and the side wall of the embedding groove 71 is provided with a limiting groove 72 adapted to the limiting protrusion 82, and the bottom of the limiting groove 72 is provided with a first through hole 73 adapted to the pushing rod 81. During assembly, the pushing seat 80 is arranged in the embedding groove 71, the limiting protrusion 82 is stuck in the limiting groove 72, and the pushing rod 81 extends downward through the first through hole 73 to conflict with the piston 25. By adopting the conflicting connection method, the piston 25 can not only push the pushing seat 80 upward, but also ensure that the pushing seat 80 can rotate relative to the piston 25. Through the cooperation between the limiting groove 72 and the limiting protrusion 82, the push seat 80 can only move up and down relative to the connecting seat 70, but cannot rotate relative to the connecting seat 70, so that the universal coupling 30 can drive the chuck 41 and the chuck set 42 to rotate synchronously. In the present invention, a plurality of limiting protrusions 82 are provided, and the plurality of limiting protrusions 82 are evenly distributed on the edge of the push seat 80 in an annular shape.

[0045] Specifically, the reset mechanism is a compression spring (not shown), and the lower end of the chuck set 42 is provided with a spring positioning groove 43 corresponding to the compression spring. During assembly, the upper end of the compression spring contacts the top wall of the spring positioning groove 43, and the lower end contacts the upper surface of the push seat 80, so that the push seat 80 always has a tendency to move downward, so that the collet 40 remains in a clamped state. In order to make the push seat 80 more evenly stressed, the lower end of the chuck set 42 is provided with a plurality of spring positioning grooves 43, and the plurality of spring positioning grooves 43 are evenly distributed, and each spring positioning groove 43 is provided with a corresponding compression spring.

[0046] In the present invention, the connecting seat 70 is provided with a second through hole 74 that passes through from top to bottom, and the lower end of the chuck set 42 is provided with a fixing hole 44 corresponding to the second through hole 74. During assembly, a screw or bolt passes through the second through hole 74 and is threadedly connected with the fixing hole 44 to fix the chuck set 42 on the connecting seat 70. The upper end of the universal coupling 30 is provided with a first connecting hole 31, and the lower end of the connecting seat 70 is provided with a first connecting column 75 corresponding to the first connecting hole 31. The connecting seat 70 is connected to the universal coupling 30 by inserting the first connecting column 75 into the first connecting hole 31. In order to prevent the connecting seat 70 from rotating relative to the universal coupling 30, a fastening screw hole is provided on the side wall of the first connecting hole 31, so that a screw or bolt can be screwed into the fastening screw hole and tighten the first connecting column 75; the upper end of the push seat 80 is provided with a second connecting column 83, and the lower end of the chuck 41 is provided with a second connecting hole corresponding to the second connecting column 83, and the second connecting column 83 is threadedly connected with the second connecting hole.

[0047] In the present invention, the installation sleeve 20 includes a lower cylinder 21 and an upper cylinder 22 installed on the upper end of the lower cylinder 21. The connection between the upper cylinder 22 and the lower cylinder 21 forms an air cavity 23. The air cavity and the piston 25 are both arranged in an annular shape. The air inlet 24 is arranged on the outer surface of the lower cylinder 21. The upper end of the lower cylinder 21 is provided with a first positioning ring 211 adapted to the shape of the piston 25, and the piston 25 is sleeved on the outer side of the first positioning ring 211. Specifically, the lower end of the outer side of the first positioning ring 211 is formed with a step surface 212 facing upward, and the inner side wall of the lower end of the upper cylinder 22, the outer side wall of the first positioning ring 211, the step surface 212 and the lower surface of the piston 25 form an air cavity 23. The connection between the lower cylinder 21 and the upper cylinder 22, as well as the inner and outer surfaces of the piston 25 are all provided with sealing rings.

[0048] like Figure 6As shown, the tool adjustment assembly 60 includes a limit block 61 and a clamping block 62 which are relatively arranged on both sides of the opening of the chuck 41. The limit block 61 is provided with a clamping groove 611 for positioning the tool 90 on the side facing the clamping block 62. The clamping groove 611 is a V-shaped groove, and the V-shaped groove can better clamp and fix the tool. The side of the limit block 61 is provided with a push piece for adjusting the position of the limit block 61, and the side of the clamping block 62 is provided with a clamping drive mechanism for controlling the clamping block 62 to move toward the limit block 61 to fix the tool in the clamping groove 611. In the present invention, the clamping drive mechanism is a clamping cylinder 621. It should be understood that the clamping drive mechanism can be replaced by an electric cylinder or a motor and a screw rod. Specifically, the push member includes a rear push member 651, a left push member 661 and a right push member 671. An adjustment mounting seat 63 is fixedly provided on the upper end of the mounting sleeve 20. A sliding seat 64 is provided on the adjustment mounting seat 63. A U-shaped groove 641 adapted to the limit block 61 is opened on the sliding seat 64. The limit block 61 is provided with a waist-shaped hole running through the upper and lower parts. A screw passes through the waist-shaped hole and is threadedly connected to the sliding seat 64 to fix the limit block 61 in the U-shaped groove 641. The rear side of the slide 64 is provided with a rear mounting block 65, the rear mounting block 65 has a protruding portion, and the rear end of the U-shaped groove 641 is provided with a slot 642 adapted to the protruding portion. During assembly, the rear mounting block 65 is fixed to the rear end of the slide 64 by screws, and the protruding portion is embedded in the slot 642. The rear side push piece 651 is installed in the rear mounting block 65, and one end thereof passes through the protruding portion and then contacts the rear end of the limit block 61. The left and right sides of the slide 64 are respectively provided with a left mounting block 66 and a right mounting block 67, and the left push piece 661 and the right push piece 671 are respectively installed on the left and right mounting blocks 66 and 67, and the left push piece 661 and the right push piece 671 contact the left and right sides of the slide 64, respectively. Specifically, the adjustment mounting seat 63 is provided with a T-shaped mounting groove 631 extending in the left-right direction, and a plurality of sliders 632 are slidably provided in the T-shaped mounting groove 631. The left mounting block 66, the right mounting block 67 and the sliding seat 64 are respectively installed on the corresponding sliders 632 by screws. In the present invention, the left-side push piece 661, the right-side push piece 671 and the rear-side push piece 651 are all spring plunger screws. When the front-to-rear position of the limit block 61 needs to be adjusted, the limit block 61 fixed on the slide 64 is first loosened, and then the rear-side push piece 651 is screwed to make the limit block 61 move relative to the slide 64, and finally the limit block 61 is fixed on the slide 64; when the left-to-right position of the limit block 61 needs to be adjusted, the slide 64 and the corresponding slider 632 are first kept loose, and then the left-side push piece 661 or the right-side push piece 671 is screwed to make the slide 64 slide along the T-shaped mounting groove 631, and finally the slide 64 is fixed; the installation position of the left mounting block 66 and the right mounting block 67 can also be pre-adjusted to improve the adjustment accuracy.

[0049] By setting a T-shaped mounting groove 631 on the adjustment mounting seat 63, setting a slider 632 in the T-shaped mounting groove 631, and setting the left-side push member 661 and the right-side push member 671 on the left mounting block 66 and the right mounting block 67 respectively, the positions of the left-side push member 661 and the right-side push member 671 can be better adjusted, the adjustment accuracy can be improved, and the detection quality of the tool can be improved.

[0050] In the present invention, the upper end of the upper cylinder 22 is provided with a second positioning ring 221, the outer side of the second positioning ring 221 is formed with a mounting step 222, and the adjustment mounting seat 63 is provided with a mounting hole adapted to the second positioning ring 221. During assembly, the second positioning ring 221 is passed through the mounting hole, and the lower surface of the adjustment mounting seat 63 is attached to the mounting step 222. The adjustment mounting seat 63 is also provided with a sensor for detecting whether the tool is installed in place.

[0051] like Figure 7 As shown, the present invention also provides an automatic tool measuring device, including a frame 200, on which are provided a loading conveyor belt 210 for a tool to be tested, a unloading conveyor belt 220 for a good tool, a tool detection mechanism 230 and the aforementioned tool clamping device 100, wherein the tool clamping device 100 is used to clamp the tool to be tested and send the tool to be tested to the tool detection mechanism 230 for detection, and the frame 200 is also provided with a material transfer robot 240 for transferring the tool to be tested 90 from the loading conveyor belt 210 for the tool to be tested to the tool clamping device 100. Specifically, the tool loading conveyor belt 210 for testing and the unloading conveyor belt 220 for good tools are arranged side by side, the tool clamping device 100 is arranged beside the unloading conveyor belt 220 for good tools, and a defective product placement plate 250 is also arranged above the tool clamping device 100. In addition to being used to transfer the tool to be tested to the tool clamping device 100, the material transfer robot 240 can also be used to transfer the tested good tools 90 to the unloading conveyor belt 220 for good tools, and to transfer the defective tools to the defective product placement plate 250. The frame 200 is also provided with a rotation drive mechanism 260 for controlling the tool clamping device to turn from vertical to horizontal, and a material transfer drive module 270 for driving the rotation drive mechanism 260 to move toward the tool detection mechanism 230. It should be understood that the material transfer robot 240 and the tool detection mechanism 230 in the present application both adopt mature technical means in the field, which will not be described in detail here.

[0052] In summary, the present invention sets an air cavity on the side wall of the mounting sleeve, thereby controlling the movement of the piston in the air cavity by air pressure, and controlling the movement of the chuck relative to the chuck kit by the piston to realize the opening of the collet, thereby eliminating the need to perforate the universal coupling, simplifying the structure of the tool clamping device, reducing the processing difficulty, improving the structural strength of the universal coupling, and making the universal coupling more flexible to rotate, thereby better adjusting the angle of the tool, improving the measurement accuracy of the tool, and allowing the detection accuracy of the tool to reach ±1μm; by setting a tool adjustment component, the position of the tool can be adjusted through the tool adjustment component, so that the tool can be in the best detection position, further improving the detection accuracy of the tool, and improving the factory quality of the tool.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A tool clamping device, comprising a mounting sleeve, wherein a universal coupling and a collet driven to rotate by the universal coupling are arranged in the mounting sleeve, characterized in that: The collet comprises a collet for clamping a tool and a collet set sleeved outside the collet, a reset mechanism is arranged inside the mounting sleeve to make the collet always have a clamping tendency, an air cavity and an air inlet are arranged on the side wall of the mounting sleeve, a piston is arranged inside the air cavity to control the upward movement of the collet to open the collet, and the air inlet is communicated with the air cavity on the lower side of the piston; The upper end of the mounting sleeve is provided with a tool adjustment assembly for adjusting the position of the tool, and the tool adjustment assembly includes a limit block and a clamping block relatively arranged on both sides of the opening of the chuck, and the side of the limit block facing the clamping block is provided with a clamping groove for positioning the tool, and the side of the limit block is provided with a push piece for adjusting the position of the limit block, and the side of the clamping block is provided with a clamping drive mechanism for controlling the clamping block to move toward the limit block to fix the tool in the clamping groove.

2. A tool clamping device according to claim 1, characterized in that: The upper end of the universal coupling is provided with a connecting seat, a push seat is embedded in the connecting seat, the chuck is connected to the push seat, the chuck kit is connected to the connecting seat, the push seat is provided with a push rod extending downward, and the lower end of the push rod is in contact with the upper end surface of the piston.

3. A tool clamping device according to claim 2, characterized in that: The upper end of the connecting seat is provided with an embedding groove adapted to the pushing seat, the pushing seat is provided with a limiting protrusion extending radially outward, the pushing rod extends downward from the lower surface of the limiting protrusion, the side wall of the embedding groove is provided with a limiting groove adapted to the limiting protrusion, and the bottom of the limiting groove is provided with a first through hole adapted to the pushing rod. During assembly, the pushing seat is arranged in the embedding groove, the limiting protrusion is stuck in the limiting groove, and the pushing rod extends downward through the first through hole to conflict with the piston.

4. A tool clamping device according to claim 2, characterized in that: The reset mechanism is a compression spring, and the lower end of the chuck kit is provided with a spring positioning groove corresponding to the compression spring. During assembly, the upper end of the compression spring abuts against the top wall of the spring positioning groove, and the lower end abuts against the upper surface of the push seat.

5. A tool clamping device according to claim 2, characterized in that: The connecting seat is provided with a second through hole which passes through from top to bottom, and the lower end of the chuck kit is provided with a fixing hole corresponding to the second through hole. During assembly, a screw or bolt passes through the second through hole and is threadedly connected with the fixing hole to fix the chuck kit on the connecting seat.

6. A tool clamping device according to claim 2, characterized in that: The upper end of the universal coupling is provided with a first connecting hole, the lower end of the connecting seat is provided with a first connecting column corresponding to the first connecting hole, and the connecting seat is connected to the universal coupling by inserting the first connecting column into the first connecting hole; the upper end of the push seat is provided with a second connecting column, the lower end of the chuck is provided with a second connecting hole corresponding to the second connecting column, and the second connecting column is threadedly connected to the second connecting hole.

7. A tool clamping device according to claim 1, characterized in that: It also includes a base, a mounting sleeve is fixedly provided on the upper end of the base, a driving motor is provided on the side of the mounting sleeve, a synchronous wheel is fixedly provided on the lower end of the universal coupling, and the driving motor drives the synchronous wheel to rotate through a synchronous belt.

8. A tool clamping device according to claim 7, characterized in that: The mounting sleeve includes a lower cylinder and an upper cylinder installed on the upper end of the lower cylinder. The connection between the upper cylinder and the lower cylinder forms an air cavity. The air cavity and the piston are both arranged in a ring shape. The air inlet is arranged on the outer surface of the lower cylinder. The upper end of the lower cylinder is provided with a first positioning ring adapted to the shape of the piston, and the piston is sleeved on the outside of the first positioning ring.

9. A tool clamping device according to claim 8, characterized in that: The push piece includes a rear push piece, a left push piece and a right push piece, the upper end of the mounting sleeve is fixedly provided with an adjusting mounting seat, the adjusting mounting seat is provided with a sliding seat, the sliding seat is provided with a U-shaped groove adapted to the limit block, the rear side of the sliding seat is provided with a rear mounting block, the rear push piece is installed in the rear mounting block, and one end extends out of the rear mounting block and conflicts with the rear end of the limit block, the left and right sides of the sliding seat are respectively provided with a left mounting block and a right mounting block, the left and right push pieces are respectively installed on the left and right mounting blocks, and the left and right push pieces conflict with the left and right sides of the sliding seat respectively, the adjusting mounting seat is provided with a T-shaped mounting groove, a plurality of sliding blocks are slidably provided in the T-shaped mounting groove, and the left mounting block, the right mounting block and the sliding seat are respectively installed on the corresponding sliding blocks.

10. An automatic tool measuring device, comprising a frame, on which are provided a feeding conveyor belt for tools to be tested, a unloading conveyor belt for qualified tools, a tool detection mechanism and a tool clamping device according to any one of claims 1 to 9, wherein the tool clamping device is used to clamp the tool to be tested and send the tool to be tested to the tool detection mechanism for detection, and the frame is also provided with a material transfer robot for transferring the tool to be tested to the tool clamping device.

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