Material clamping mechanism for cutter measurement

Abstract

The utility model discloses a material clamping mechanism for cutter measurement, which comprises a mounting sleeve, a universal coupling and a collet chuck driven by the universal coupling to rotate are arranged in the mounting sleeve, and the collet chuck comprises a chuck for clamping a cutter and a chuck external member sleeved outside the chuck. A reset mechanism enabling the chuck to have the clamping tendency all the time is arranged in the installation sleeve, an air cavity and an air inlet communicated with the air cavity are formed in the side wall of the installation sleeve, and a piston controlling the chuck to move so that the chuck can be opened is arranged in the air cavity. The gas cavity is arranged on the side wall of the mounting sleeve, so that the opening or clamping of the collet can be controlled in a mode of pushing the piston to work through gas, the structure of the material clamping mechanism is simplified, the processing difficulty is reduced, the rotating adjustment of the universal coupling is not influenced, the position adjustment is more accurate after the cutter is clamped, the measuring accuracy of the cutter is improved, and the working efficiency is improved. The delivery quality of the cutter is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool machining equipment technical field, concretely relates to a tool measuring material clamping mechanism. BACKGROUND

[0002] Metal milling is the main manufacturing method of manufacturing parts, and the milling cutter is the key factor to support and promote the progress of milling technology. The wide application of high-efficiency numerical control machine tools has made modern milling technology develop to a new stage, and high-precision cutters are the basic prerequisite for expensive numerical control machine tools to play their high-efficiency processing capacity. The measurement of the cutter is an important link of high-precision cutter processing, which includes the detection of cutter diameter, profile, helix and end face.

[0003] The cutter needs to be fixed and inserted in the material clamping mechanism during the measurement process, and the cutter needs to be rotated according to the measurement requirements. The material clamping mechanism is provided with a collet, the collet is connected with the driving mechanism through a universal joint, the collet includes an inner chuck and a chuck sleeve set outside the inner chuck, and the chuck is clamped or opened by controlling the movement of the inner chuck relative to the chuck sleeve set during operation. At present, the inner chuck is driven to move by a cylinder at the bottom of the material clamping mechanism to control the clamping or opening of the collet. Since the cylinder is arranged at the bottom of the collet, the output end of the cylinder needs to be provided with an elongated driving rod to pass through the universal joint. Moreover, such a driving mode needs to provide a through hole on the universal joint, which increases the processing difficulty and reduces the strength of the universal joint and the driving rod. Due to the interference of the driving rod, the flexibility of the universal joint is reduced, which further affects the rotation adjustment angle of the universal joint, thereby affecting the measurement accuracy of the cutter. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of material clamping mechanism for cutter measurement according to the lack of prior art, which can simplify the structure of clamping device, reduce processing difficulty and improve cutter measurement accuracy.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of material clamping mechanism for cutter measurement, including installation sleeve, the installation sleeve is equipped with universal coupling and the collet rotated by universal coupling, the collet includes chuck for clamping cutter and chuck sleeve set outside chuck, the installation sleeve is equipped with reset mechanism to make chuck always have the tendency of clamping, the side wall of the installation sleeve is provided with gas cavity and the gas inlet communicated with gas cavity, the gas cavity is equipped with piston to control the movement of chuck to make chuck open.

[0007] The utility model discloses, the outer side of the upper end of the chuck and the inner side of the upper end of the chuck sleeve are equipped with the taper inclined plane extending to the axis of the chuck from top to bottom, when the chuck is active downward relative to the chuck sleeve, the chuck is in the clamping state because of the extrusion of the taper inclined plane, and when the chuck is active upward relative to the chuck sleeve, the chuck is in the open state because of the restriction of the taper inclined plane is solved.

[0008] As a preferred technical scheme, the upper end of the universal coupling is provided with a connecting seat rotatable by the universal coupling, a pusher seat rotatable with the connecting seat is embedded on the connecting seat, the chuck is connected with the pusher seat, the chuck sleeve is connected with the connecting seat, the pusher seat is provided with a push rod extending downward, and the lower end of the push rod is in abutting connection with the upper end surface of the piston.

[0009] As a preferred technical scheme, the upper end of the connecting seat is provided with an embedding groove matched with the pusher seat, the pusher seat is provided with a limiting protrusion extending outward along the radial direction, 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 matched with the limiting protrusion, the bottom of the limiting groove is provided with a first through hole matched with the push rod, and when assembled, the pusher seat is arranged in the embedding groove, the limiting protrusion is clamped in the limiting groove, and the push rod extends downward through the first through hole and abuts against the upper surface of the piston.

[0010] As a preferred technical scheme, the limiting protrusion is provided with a plurality of limiting protrusions, and the plurality of limiting protrusions are uniformly distributed in the edge of the pusher seat in a ring shape.

[0011] As a preferred technical scheme, the reset mechanism is a compression spring, the lower end of the chuck sleeve is provided with a spring positioning groove corresponding to the compression spring, and when assembled, 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 pusher seat.

[0012] As a preferred technical scheme, the connecting seat is provided with a second through hole penetrating up and down, the lower end of the chuck sleeve is provided with a fixing hole corresponding to the second through hole, and when assembled, a screw or a bolt is threadedly connected through the second through hole and the fixing hole to fix the chuck sleeve on the connecting piece.

[0013] As a preferred technical scheme, the upper end of the universal joint 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 with the universal joint by inserting the first connecting column into the first connecting hole.

[0014] As a preferred technical scheme, the bottom base is further provided with a mounting sleeve fixedly arranged at the upper end of the bottom base, a driving motor is arranged beside the mounting sleeve, a synchronous wheel is fixedly arranged at the lower end of the universal joint, and the driving motor drives the synchronous wheel to rotate through a synchronous belt.

[0015] As a preferred technical scheme, the mounting sleeve comprises a lower cylinder body and an upper cylinder body mounted at the upper end of the lower cylinder body, the air cavity and the piston are both arranged in a ring shape, the upper end of the lower cylinder body is provided with a first positioning ring matched with the piston, the lower end of the outer side of the first positioning ring is formed with a step surface facing upward, the piston is sleeved on the outer side of the first positioning ring, and the inner side wall of the lower end of the upper cylinder body, the outer side wall of the first positioning ring, the step surface and the lower end surface of the piston form the air cavity.

[0016] As a preferred technical scheme, the air inlet is arranged on the outer side surface of the lower cylinder body, the lower cylinder body is provided with an air channel penetrating to the step surface, and the air inlet is communicated with the air cavity through the air channel.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically, the air cavity is arranged on the side wall of the mounting sleeve, the piston is controlled to move through air pressure, the clamp head is controlled to move relative to the clamp head sleeve through the piston to realize opening of the collet, the perforation on the universal joint is not needed, the structure of the clamp mechanism for tool measurement is simplified, the machining difficulty is reduced, the structural strength of the universal joint is improved, the universal joint rotates more flexibly, the angle of the tool is better adjusted, the measurement precision of the tool is improved, and the detection precision of the tool can reach ±1μm.

[0018] To make the structure features, technical means and specific purposes and functions of the utility model clearer, the utility model will be further described in detail in combination with the drawings and specific embodiments as follows: BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the assembly structure diagram of the embodiment of the utility model;

[0020] Figure 2 is the cross section structure schematic view of the embodiment of the utility model;

[0021] Figure 3 is Figure 2An enlarged schematic view at B in the middle;

[0022] Figure 4 Is the embodiment of the utility model internal structure diagram;

[0023] Figure 5 Is the embodiment of the utility model mounting sleeve exploded view.

[0024] Explanation of the attached drawings:

[0025] 10, base; 20, mounting sleeve; 21, lower cylinder;

[0026] 211, first positioning ring; 212, step surface; 22, upper cylinder;

[0027] 221, second positioning ring; 222, mounting step; 23, air cavity;

[0028] 24, air inlet; 25, piston; 30, universal coupling;

[0029] 31, first connecting hole; 32, synchronous wheel; 40, cylinder clamp;

[0030] 41, chuck; 42, chuck sleeve; 43, spring positioning groove;

[0031] 44, fixing hole; 50, driving motor; 51, synchronous belt;

[0032] 60, cutter; 70, connecting seat; 71, embedding groove;

[0033] 72, limiting groove; 73, first through hole; 74, second through hole;

[0034] 75, first connecting column; 80, pusher seat; 81, push rod;

[0035] 82, limiting lug; 83, second connecting column. DETAILED DESCRIPTION

[0036] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the utility model.

[0037] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term '' install '' '' connect '' '' connection '' should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication, for the ordinary skill in the art, the above-mentioned term can be understood according to the specific circumstances in the utility model.

[0038] As Figures 1-5 The utility model discloses a tool clamping device, including base 10, the upper end of base 10 is fixedly provided with mounting sleeve 20, the mounting sleeve 20 is equipped with universal coupling 30 and the cylinder clamp 40 of rotating by universal coupling 30 drive, the lower end of universal coupling 30 is rotatably installed in mounting sleeve 20, the side of mounting sleeve 20 is equipped with drive motor 50, the lower end of universal coupling 30 is fixedly provided with synchronous wheel 32, drive motor 50 rotates synchronous wheel 32 through synchronous belt 51. The cylinder clamp 40 includes the chuck 41 for clamping tool 60 and the chuck sleeve 42 of setting in the chuck 41 outside, the mounting sleeve 20 is equipped with the reset mechanism of making the chuck 41 always have the tendency of clamping, the lateral wall of mounting sleeve 20 is equipped with air cavity 23 and air inlet 24, the air cavity 23 is equipped with piston 25 of controlling the chuck 41 and moving upwards to make the chuck 41 open, air inlet 24 is communicated with the air cavity 23 of the lower side of piston 25, when needing to open the chuck 41, gas enters the inside of air cavity 23 from air inlet 24 and promotes piston 25 and moves upwards, the upper end of mounting sleeve 20 is equipped with tool adjusting assembly 60 for adjusting the position of tool 60.

[0039] In the utility model, the outside of the upper end of chuck 41 and the inside of the upper end of chuck sleeve 42 are all equipped with the taper inclined plane extending to the axis of chuck 41 from top to bottom, when the chuck 41 moves downwards relative to chuck sleeve 42, because of the extrusion of taper inclined plane, the chuck 41 is in clamping state, and when the chuck 41 moves upwards relative to chuck sleeve 42, because of the restriction of taper inclined plane being solved, the chuck 41 is in open state, at this time, tool can be put into the chuck 41 from the upper end of chuck 41. By setting air cavity 23 on the lateral wall of mounting sleeve 20, the piston 25 in air cavity 23 is controlled to move by air pressure, and the chuck 41 is controlled to move relative to chuck sleeve 42 by piston 25 to realize the opening of cylinder clamp 40, so that the perforation on universal coupling 30 is not needed, the structure of material clamping mechanism is simplified, the machining difficulty is reduced, the structural strength of universal coupling 30 is improved, and the rotation of universal coupling 30 is more flexible, the angle of tool is better adjusted, the measuring precision of tool is improved, and the factory quality of tool is improved. It should be noted that the universal coupling 30 in the application is a three-joint coupling commonly used in the art.

[0040] The utility model discloses a universal joint 30's upper end is equipped with the connecting seat 70, the connecting seat 70 is embedded with the push seat 80, the chuck 41 is connected with the push seat 80, the chuck sleeve 42 is connected with the connecting seat 70, the push seat 80 is equipped with the push rod 81 that stretches out downward, the lower end of push rod 81 is connected with the upper end surface of piston 25.

[0041] Specific, the upper end of connecting seat 70 is equipped with the embedding groove 71 of adapting with push seat 80, the push seat 80 is equipped with the limiting lug 82 that stretches out along the radial outward, push rod 81 stretches out downward from the lower surface of limiting lug 82, the side wall of embedding groove 71 is equipped with the limiting slot 72 of adapting with limiting lug 82, the bottom of limiting slot 72 is equipped with the first through -hole 73 of adapting with push rod 81, when assembling, push seat 80 is in embedding groove 71, limiting lug 82 is clamped in limiting slot 72, push rod 81 passes through the first through -hole 73 and stretches out downward and is in contact with piston 25, by adopting the mode of contact connection, piston 25 can push push seat 80 upward, and push seat 80 can also be guaranteed to rotate relative to piston 25. Through the cooperation of limiting slot 72 and limiting lug 82, push seat 80 can only move up and down relative to connecting seat 70, and cannot rotate relative to connecting seat 70, so that universal joint 30 can drive chuck 41 and chuck sleeve 42 to rotate synchronously. In the utility model, limiting lug 82 is equipped with multiple, and multiple limiting lugs 82 are evenly distributed in the edge of push seat 80 in annular form.

[0042] Specific, the reset mechanism is compression spring (not shown), the lower end of chuck sleeve 42 is equipped with the spring positioning slot 43 corresponding with compression spring, when assembling, the upper end of compression spring is in contact with the top wall of spring positioning slot 43, and the lower end is in contact with the upper surface of push seat 80, so that push seat 80 always has the tendency of moving downward, so that cylinder clamp 40 keeps the clamping state. In order to make the force of push seat 80 more uniform, the lower end of chuck sleeve 42 is equipped with multiple spring positioning slots 43, and multiple spring positioning slots 43 are evenly distributed, and each spring positioning slot 43 is equipped with a corresponding compression spring.

[0043] The utility model discloses a connecting seat 70 is equipped with the second through -hole 74 that penetrates up and down, the lower extreme of collet sleeve kit 42 is equipped with the fixed hole 44 corresponding with second through -hole 74, when assembling, screw or bolt passes through second through -hole 74 and fixed hole 44 screw connection will collet sleeve kit 42 be fixed on connecting seat 70.

[0044] The utility model discloses a mounting sleeve 20 includes lower cylinder body 21 and installs upper cylinder body 22 on the lower cylinder body 21 upper end, the connection of upper cylinder body 22 and lower cylinder body 21 is surrounded and is formed gas cavity 23. Specifically, the gas cavity and piston 25 are all annular and are arranged, the upper end of lower cylinder body 21 is equipped with the first positioning ring 211 of shape adaptation with piston 25, the lower end of first positioning ring 211 outside forms the step surface 212 of facing upwards, piston 25 is set up in first positioning ring 211 outside. The inner side wall of upper cylinder body 22 lower end, the outer side wall of first positioning ring 211, step surface 212 and the lower end surface of piston 25 are surrounded and are formed gas cavity 23, the gas inlet 24 is equipped with in the outside surface of lower cylinder body 21, the side wall of lower cylinder body 21 is equipped with the air passage that penetrates to step surface 212, the gas inlet 24 is communicated with gas cavity 23 through air passage. The connection of lower cylinder body 21 and upper cylinder body 22, and the inner and outer surfaces of piston 25 are all equipped with sealing ring.

[0045] The utility model discloses a upper cylinder body 22 upper end is equipped with the second positioning ring 221, the outside of second positioning ring 221 forms and installs step 222.

[0046] The utility model discloses a mounting sleeve side wall sets up gas cavity, thereby through the piston activity of gas pressure control, and through the relative collet activity of collet sleeve kit of piston control to realize the opening of cylinder clamp, thereby not needing to be perforated on universal coupling, has simplified the structure of the material clamping mechanism of tool measuring, has reduced the processing difficulty, has improved the structural strength of universal coupling, and make the rotation of universal coupling more flexible, thereby better adjust the angle of tool, improve the measuring precision of tool, make the detection precision of tool can reach ±1mu m.

[0047] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and thus any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical spirit of the present application still falls within the scope of the technical scheme of the present application.

Claims

1. A tool measuring chuck mechanism comprising a mounting sleeve, a universal joint provided in the mounting sleeve, and a collet rotated by the universal joint, characterized in that, The chuck comprises a chuck head for clamping the tool and a chuck sleeve set outside the chuck head, the mounting sleeve is provided with a reset mechanism for always making the chuck have a clamping tendency, the side wall of the mounting sleeve is provided with an air cavity and an air inlet communicating with the air cavity, and the air cavity is provided with a piston for controlling the movement of the chuck to make the chuck open.

2. The tool measuring clamp mechanism according to claim 1, wherein The upper end of the universal coupling is provided with a connecting seat which can be driven to rotate by the universal coupling, the connecting seat is embedded with a pushing seat which can rotate with the connecting seat, the chuck is connected with the pushing seat, the chuck sleeve is connected with the connecting seat, and the pushing seat is provided with a pushing rod which extends downward and is in abutting connection with the upper end surface of the piston.

3. The tool measuring clamp mechanism according to claim 2, wherein The upper end of the connecting seat is provided with an embedding groove which is matched with the pushing seat, the pushing seat is provided with a limiting protrusion which extends outward along the radial direction, 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 which is matched with the limiting protrusion, the bottom of the limiting groove is provided with a first through hole which is matched with the pushing rod, when assembled, the pushing seat is arranged in the embedding groove, the limiting protrusion is clamped in the limiting groove, and the pushing rod extends downward through the first through hole and abuts against the upper surface of the piston.

4. The tool measuring clamp mechanism according to claim 3, wherein The limiting protrusion is provided with a plurality of limiting protrusions which are uniformly distributed in the edge of the pushing seat in a ring shape.

5. A tool measuring chucking mechanism according to any one of claims 2 to 4, characterized in that The reset mechanism is a compression spring, the lower end of the chuck sleeve is provided with a spring positioning groove which is matched with the compression spring, when assembled, 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 pushing seat.

6. A tool measuring chucking mechanism according to any one of claims 2 to 4, characterized in that The connecting seat is provided with a second through hole which penetrates upward and downward, the lower end of the chuck sleeve is provided with a fixing hole which is matched with the second through hole, when assembled, a screw or a bolt is threadedly connected through the second through hole and the fixing hole to fix the chuck sleeve on the connecting seat.

7. A tool measuring chucking mechanism according to any one of claims 2 to 4, 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 which is matched with the first connecting hole, the connecting seat is connected with the universal coupling by inserting the first connecting column into the first connecting hole, the upper end of the pushing seat is provided with a second connecting column, the lower end of the chuck is provided with a second connecting hole which is matched with the second connecting column, and the second connecting column is threadedly connected with the second connecting hole.

8. The tool measuring clamp mechanism according to claim 1, wherein The base is further provided with a mounting sleeve fixedly arranged at the upper end, a driving motor is arranged beside the mounting sleeve, the lower end of the universal coupling is fixedly provided with a synchronous wheel, and the driving motor drives the synchronous wheel to rotate through a synchronous belt.

9. The tool measuring clamp mechanism according to claim 8, wherein The mounting sleeve comprises a lower cylinder body and an upper cylinder body arranged at the upper end of the lower cylinder body, the air cavity and the piston are arranged in a ring shape, the upper end of the lower cylinder body is provided with a first positioning ring which is matched with the piston, the lower end of the outer side of the first positioning ring is formed with a step surface facing upward, the piston is arranged outside the first positioning ring, and the inner side wall of the lower end of the upper cylinder body, the outer side wall of the first positioning ring, the step surface and the lower end surface of the piston form the air cavity.

10. The tool measuring clamp mechanism according to claim 9, wherein The air inlet is arranged on the outer side surface of the lower cylinder body, the lower cylinder body is provided with an air channel which penetrates to the step surface, and the air inlet is communicated with the air cavity through the air channel.

Images