Zero-point multi-angle quick-change module of ball lock

Abstract

The invention provides a ball lock zero-point multi-angle quick-change module which comprises a locking module and a clamp module, a fixed sealing protrusion is arranged on the end face, close to a zero-point lower cover, of a zero-point upper cover, and a movable sealing protrusion is arranged on the end face, close to the zero-point upper cover, of a piston. A loosening and clamping gas path formed by the loosening and clamping gas inlet channel and the loosening and clamping gas outlet hole is a closed gas path, so that the locking effect on the clamp module is ensured; a plurality of locking balls are evenly arranged on the end face, close to a zero-point upper cover, of a mandrel, the inner side wall of a movable sealing protrusion makes contact with the multiple locking balls, a receding slope is arranged on the inner side wall of the end, close to the zero-point upper cover, of the movable sealing protrusion, and a locking groove is formed in the middle of a clamp plate pop rivet. According to the multi-angle clamping device, the multiple locking balls can be conveniently loosened or clamp the locking grooves through movement of the piston, so that the clamp module can be rapidly replaced, meanwhile, multi-angle adjustment can be conveniently conducted by rotating the clamp plate blind rivet, multi-angle and high-precision machining of parts is achieved, use is convenient, and the cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a ball lock zero-point multi-angle quick-change module. Background Art

[0002] With the rapid development of the mechanical processing manufacturing industry, parts have become multi-angle and complex, which puts forward new requirements for high-precision, multi-angle, high-surface quality, and high-efficiency processing of parts. At present, the conventional four-axis machining center combined with the bridge plate processing method often requires the production of a lot of special tooling to process multi-angle and high-precision parts, but the tooling production cost is high and the production cycle is long. The first debugging of the tooling is difficult and it is easy to be scrapped during debugging; although the use of traditional zero-point positioning can achieve high-precision positioning, it needs to be used in combination and cannot achieve multi-faceted processing of smaller parts; if a five-axis machining center is used to process multi-faceted high-precision parts, the processing cost of the product will be further increased. Summary of the invention

[0003] In view of the problem in the prior art that it is difficult or costly to process multi-angle, high-precision parts, the present invention provides a ball lock zero-point multi-angle quick-change module.

[0004] A ball lock zero-point multi-angle quick-change module of the present invention comprises a locking module and a clamp module, wherein the locking module comprises a zero-point upper cover, a zero-point lower cover, a core shaft, a piston, a plurality of locking balls and a plurality of elastic members, wherein the zero-point upper cover is fixed on the zero-point lower cover, an upper cover through hole is arranged in the middle of the zero-point upper cover, an upper cover limiting protrusion is arranged on the end surface of the zero-point upper cover close to the zero-point lower cover at a position close to the upper cover through hole, a fixed sealing protrusion is arranged on the end surface of the zero-point upper cover close to the zero-point lower cover at a position located at the outer periphery of the upper cover limiting protrusion, the outer side wall of the fixed sealing protrusion is fitted with the inner side wall of the zero-point lower cover, and a loose clamp air inlet channel is arranged on the side wall of the zero-point upper cover. A plurality of loose clamping air outlet holes are evenly arranged on the end surface of the fixed sealing protrusion close to the zero point lower cover, and the plurality of loose clamping air outlet holes are connected with the loose clamping air inlet channel; the core shaft is fixed to the middle part of the end surface of the zero point lower cover close to the zero point upper cover, and a core shaft accommodating groove is arranged on the end surface of the core shaft close to the zero point upper cover at a position corresponding to the upper cover through hole, and a core shaft limiting protrusion is arranged on the end surface of the core shaft close to the zero point upper cover at a position corresponding to the upper cover limiting protrusion; the piston sleeve is arranged on the side wall of the core shaft, and the outer side wall of the piston is fitted with the inner side wall of the zero point lower cover, and a plurality of elastic parts are located between the piston and the zero point lower cover, and the plurality of elastic parts are evenly distributed along the outer circumference of the core shaft, and the piston is close to the zero point lower cover. A movable sealing protrusion is provided on the end face of the zero-point upper cover, and the inner wall of the fixed sealing protrusion is fitted with the outer wall of the movable sealing protrusion; a plurality of locking balls are evenly arranged on the end face of the core shaft close to the zero-point upper cover, and the inner wall of the movable sealing protrusion is in contact with the plurality of locking balls; an air avoidance slope is provided on the inner wall of one end of the movable sealing protrusion close to the zero-point upper cover, and the distance from the air avoidance slope to the central axis of the piston gradually decreases from the end close to the zero-point upper cover to the end away from the zero-point upper cover; the fixture module includes a fixture plate, a fixture plate rivet and a zero-point special fixture, the zero-point special fixture is fixed on the end face of the fixture plate away from the zero-point upper cover, and the fixture plate rivet is fixed on the end face of the fixture plate away from the zero-point upper cover. The nail is fixed on the end face of the clamp plate close to the zero point upper cover, and a locking groove is provided in the middle of the clamp plate pull nail; wherein, when the clamp module is in a locked state, no compressed gas enters the loose clamp air inlet channel, the end face of the clamp plate close to the zero point upper cover is in contact with the zero point upper cover, and the end of the clamp plate pull nail away from the clamp plate is located in the core shaft accommodating groove, and the piston makes the multiple locking balls closely contact with the locking grooves under the action of multiple elastic parts; when the clamp module is not in a locked state, compressed gas enters the loose clamp air inlet channel, and the piston makes the multiple locking balls not closely contact with the locking grooves under the action of the compressed gas flowing out from the multiple loose clamp air outlet holes.

[0005] Preferably, the locking module also includes a plurality of fixture module positioning pins, which are evenly fixed on the end face of the zero-point upper cover away from the zero-point lower cover, and there is a first distance between the end face of the plurality of fixture module positioning pins away from the zero-point upper cover and the zero-point upper cover; wherein, when the fixture module is in a locking state, the end face of the fixture plate close to the zero-point upper cover contacts with the plurality of fixture module positioning pins.

[0006] Furthermore, a chip removal air inlet hole is provided in the middle part of the zero point lower cover, a core shaft air inlet hole is provided at a position on the core shaft corresponding to the chip removal air inlet hole, a clamp plate air inlet hole is provided at a position on the clamp plate pull nail corresponding to the core shaft air inlet hole, and a plurality of clamp plate air outlet holes are evenly provided on the side wall of one end of the clamp plate pull nail close to the clamp plate, and the plurality of clamp plate air outlet holes are all connected to the clamp plate air inlet hole; wherein, when the clamp module is in a locked state, the plurality of clamp plate air outlet holes are all located outside the locking module.

[0007] Furthermore, an eccentric inclined hole is provided on the end surface of the core shaft close to the multiple locking balls, and the eccentric inclined hole is communicated with the air inlet hole of the core shaft.

[0008] On the basis of the foregoing, further, the module also includes a fixed seat, a fixed groove is provided on the fixed seat, the fixed groove includes a fixed part and an accommodating part, the fixed part and the accommodating part are connected, the inner diameter of the fixed part is larger than the inner diameter of the accommodating part, and a total chip removal air inlet is provided on the upper surface of the fixed seat; the zero-point upper cover is fixed in the fixed part; the outer diameter of the zero-point lower cover is smaller than the inner diameter of the accommodating part, the zero-point lower cover is located in the accommodating part, and there is a second distance between the end face of the zero-point lower cover away from the zero-point upper cover and the bottom face of the groove of the accommodating part, and an accommodating air inlet is provided on the side wall of the accommodating part, and the accommodating air inlet is connected with the total chip removal air inlet.

[0009] On the basis of the foregoing, further, a total clamp release air inlet is also provided on the upper surface of the fixed seat, a fixed clamp release air inlet channel is provided on the end surface of the zero point upper cover close to the zero point lower cover at a position corresponding to the fixed part, the fixed clamp release air inlet channel is connected with the clamp release air inlet channel, a fixed air inlet channel is provided on the groove bottom surface of the fixed part at a position corresponding to the fixed clamp release air inlet channel, the fixed air inlet channel is connected with the total clamp release air inlet, and a plug is provided on the side wall of the zero point upper cover at a position corresponding to the clamp release air inlet channel.

[0010] Preferably, the fixture module also includes a spring sheet and a plurality of spring sheet positioning pins. The spring sheet is fixed on the end face of the fixture plate close to the zero point upper cover. A spring sheet through hole is provided in the middle of the spring sheet. A plurality of spring sheet positioning holes are evenly provided on the spring sheet. The plurality of spring sheet positioning pins correspond one-to-one to the plurality of spring sheet positioning holes. The positions on the fixture plate corresponding to the plurality of spring sheet positioning holes are all provided with first fixture plate positioning holes. The plurality of spring sheet positioning holes and their corresponding first fixture plate positioning holes are connected through their corresponding spring sheet positioning pins. The fixture plate rivets are fixedly connected to the fixture plate after passing through the spring sheet through holes.

[0011] Furthermore, the fixture module also includes a plurality of fixture locating pins, and a plurality of second fixture plate locating holes are evenly arranged on the end surface of the fixture plate close to the zero-point special fixture. The plurality of second fixture plate locating holes correspond one-to-one to the plurality of fixture locating pins. Zero-point fixture plate locating holes are arranged at positions on the zero-point special fixture corresponding to the plurality of second fixture plate locating holes. The plurality of second fixture plate locating holes and their corresponding zero-point fixture locating holes are connected through their corresponding fixture locating pins.

[0012] Preferably, a plurality of lower cover support grooves are evenly arranged on the end surface of the zero point lower cover close to the zero point upper cover at positions located on the outer periphery of the core shaft, and the plurality of lower cover support grooves correspond one-to-one to the plurality of elastic members. A piston contact groove is arranged on the end surface of the piston close to the zero point lower cover at positions corresponding to the plurality of lower cover support grooves, one ends of the plurality of elastic members contact the groove bottom surfaces of the corresponding lower cover support grooves, and the other ends of the plurality of elastic members contact the groove bottom surfaces of the corresponding piston contact grooves.

[0013] Preferably, an abutment slope is provided on the side wall of the end of the clamp plate rivet away from the clamp plate, and the distance from the abutment slope to the central axis of the clamp plate rivet gradually decreases from the end close to the clamp plate to the end away from the clamp plate.

[0014] Compared with the prior art, the ball lock zero-point multi-angle quick-change module of the present invention is provided with a fixed sealing protrusion on the end face of the zero-point upper cover close to the zero-point lower cover, a clamping release air outlet hole connected with the clamping release air inlet channel is provided on the end face of the fixed sealing protrusion close to the zero-point lower cover, and a movable sealing protrusion is provided on the end face of the piston close to the zero-point upper cover, the outer side wall of the fixed sealing protrusion is fitted with the inner side wall of the zero-point lower cover, and the inner side wall of the fixed sealing protrusion is fitted with the outer side wall of the movable sealing protrusion, so that the clamping release air path formed by the clamping release air inlet channel and the clamping release air outlet hole is a closed air path, and the largest possible air pressure can be output to press the elastic member downward for Energy storage can also provide the greatest possible locking force, thereby ensuring the locking effect of the fixture module; by evenly arranging multiple locking balls on the end face of the core shaft close to the zero point upper cover, the inner wall of the movable sealing protrusion is in contact with the multiple locking balls, and an air avoidance inclined surface is arranged on the inner wall of one end of the movable sealing protrusion close to the zero point upper cover, and a locking groove is arranged in the middle of the fixture plate rivet, so that the multiple locking balls can be loosened or clamped in the locking grooves by the movement of the piston, so that the fixture module can be quickly replaced, and at the same time, it is convenient to adjust the multiple angles by rotating the fixture plate rivet, thereby realizing multi-angle and high-precision processing of parts, which is easy to use and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The present invention is a schematic structural diagram of a ball lock zero-point multi-angle quick-change module according to an embodiment of the present invention.

[0017] Figure 2 The figure is a top view structural diagram of a ball lock zero-point multi-angle quick-change module according to an embodiment of the present invention.

[0018] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0019] Figure 4 for Figure 2 Cross-sectional view along direction BB.

[0020] Figure 5 for Figure 2 Cross-sectional view along CC direction.

[0021] Figure 6 FIG. 4 is a schematic structural diagram of a locking module according to an embodiment of the present invention.

[0022] Figure 7 FIG. 4 is a schematic structural diagram of a fixture module according to an embodiment of the present invention.

[0023] Figure 8 It is a schematic structural diagram of a fixing base according to an embodiment of the present invention.

[0024] Fig. 9 The present invention is a schematic diagram of the application structure of a ball lock zero-point multi-angle quick-change module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "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 present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] Please refer to Figures 1 to 7 A ball lock zero-point multi-angle quick-change module of the present invention includes a locking module 10 and a clamp module 20.

[0028] The locking module 10 includes a zero point upper cover 11 , a zero point lower cover 12 , a core shaft 13 , a piston 14 , a plurality of locking balls 15 and a plurality of elastic members 16 .

[0029] The zero point upper cover 11 is fixed on the zero point lower cover 12, and an upper cover through hole 111 is provided in the middle part of the zero point upper cover 11, and an upper cover limiting protrusion 112 is provided on the end surface of the zero point upper cover 11 close to the zero point lower cover 12, and a fixed sealing protrusion 113 is provided on the end surface of the zero point upper cover 11 close to the zero point lower cover 12, and is located at the outer periphery of the upper cover limiting protrusion 112. The outer side wall of the fixed sealing protrusion 113 is fitted with the inner side wall of the zero point lower cover 12, and a loose clamping air inlet channel 114 is provided on the side wall of the zero point upper cover 11, and a plurality of loose clamping air outlet holes 115 are evenly provided on the end surface of the fixed sealing protrusion 113 close to the zero point lower cover 12, and the plurality of loose clamping air outlet holes 115 are connected with the loose clamping air inlet channel 114 to form a loose clamping air path of the loose clamping air inlet channel 114→multiple loose clamping air outlet holes 115.

[0030] The core shaft 13 is fixed to the middle part of the end surface of the zero point lower cover 12 close to the zero point upper cover 11, and a core shaft accommodating groove 131 is provided on the end surface of the core shaft 13 close to the zero point upper cover 11 at a position corresponding to the upper cover through hole 111, and a core shaft limiting protrusion 132 is provided on the end surface of the core shaft 13 close to the zero point upper cover 11 at a position corresponding to the upper cover limiting protrusion 112.

[0031] The piston 14 is sleeved on the side wall of the core shaft 13, and the outer side wall of the piston 14 fits with the inner side wall of the zero-point lower cover 12 to ensure the sliding stability of the piston 14, so that the piston 14 will not get stuck during long-term use. A plurality of elastic members 16 are located between the piston 14 and the zero-point lower cover 12, and the plurality of elastic members 16 are evenly distributed along the outer circumference of the core shaft 13 to provide uniform force on the piston 14. A movable sealing protrusion 141 is provided on the end surface of the piston 14 close to the zero-point upper cover 11, and the inner side wall of the fixed sealing protrusion 113 fits with the outer side wall of the movable sealing protrusion 141, so that the loosening air path formed by the loosening air inlet channel 114 and the plurality of loosening air outlet holes 115 is a closed air path, which can output as large an air pressure as possible to press down the elastic member 16 for energy storage, and correspondingly can also provide as large a locking force as possible.

[0032] In a preferred embodiment, in order to ensure the stability of the force provided by the plurality of elastic members 16 to the piston 14, see Figure 3 , Figure 4 or Figure 5, a plurality of lower cover support grooves 121 are evenly arranged on the end surface of the zero point lower cover 12 near the zero point upper cover 11 at the position located on the outer periphery of the core shaft 13, and the plurality of lower cover support grooves 121 correspond to the plurality of elastic members 16 one by one, and a piston abutment groove 142 is arranged on the end surface of the piston 14 near the zero point lower cover 12 at the position corresponding to the plurality of lower cover support grooves 121, and one end of the plurality of elastic members 16 abuts against the groove bottom surface of the corresponding lower cover support groove 121, and the other end of the plurality of elastic members 16 abuts against the groove bottom surface of the corresponding piston abutment groove 142. Furthermore, the inner diameters of the plurality of lower cover support grooves 121 are equal to the outer diameters of the corresponding elastic members 16, so as to prevent the elastic members 16 from being deflected under the action of the compressed gas, affecting the energy storage, and further affecting the provided locking force.

[0033] Multiple locking balls 15 are evenly arranged on the end surface of the core shaft 13 close to the zero point upper cover 11, and the inner wall of the movable sealing protrusion 141 is in contact with the multiple locking balls 15, so that the multiple locking balls 15 are limited between the core shaft 13 and the zero point upper cover 11 by the movable sealing protrusion 141, the upper cover limiting protrusion 112 and the core shaft limiting protrusion 132. An air avoidance slope 1411 is provided on the inner wall of one end of the movable sealing protrusion 141 close to the zero point upper cover 11. The distance from the air avoidance slope 1411 to the center axis of the piston 14 gradually decreases from the end close to the zero point upper cover 11 to the end away from the zero point upper cover 11, so that the multiple locking balls 15 can loosen or clamp the fixture module 20 under the action of the piston 14.

[0034] The fixture module 20 includes a fixture plate 21, a fixture plate rivet 22 and a zero-point special fixture 23. The zero-point special fixture 23 is fixed on the end face of the fixture plate 21 away from the zero-point upper cover 11. The fixture plate rivet 22 is fixed on the end face of the fixture plate 21 close to the zero-point upper cover 11. A locking groove 221 is provided in the middle of the side wall of the fixture plate rivet 22.

[0035] Among them, when the clamp module 20 is in a locked state, no compressed gas enters the clamp release air inlet channel 114, the end face of the clamp plate 21 close to the zero point upper cover 11 is in contact with the zero point upper cover 11, the end of the clamp plate rivet 23 away from the clamp plate 21 is located in the core shaft accommodating groove 131, and the piston 14, under the action of multiple elastic members 16, makes the multiple locking balls 15 in close contact with the locking groove 221; when the clamp module 20 is not in a locked state, compressed gas enters the clamp release air inlet channel 114, and the piston, under the action of the compressed gas flowing out from the multiple clamp release air outlet holes 115, makes the multiple locking balls 15 not in close contact with the locking groove 221.

[0036] In actual use, the situations where the clamp module 20 is not in the locked state include: (1) when the clamp module 20 needs to be removed or the angle of the clamp module 20 needs to be adjusted, in this situation, the end of the clamp plate pull plate 22 away from the clamp plate 21 is located in the core shaft accommodating groove 131, and the piston 14 compresses the multiple elastic members 16 under the action of the compressed gas flowing out of the loosening outlet 115, and the end of the air avoidance slope 1411 close to the zero point upper cover 11 gradually corresponds to the position of the multiple locking balls 15, and the multiple locking balls 15 are no longer in close contact with the locking groove 221. When the clamp module 20 is taken out or rotated, the clamp plate pull pin 22 will cause the multiple locking balls 15 to move to the side close to the air avoidance slope 1411, thereby facilitating the removal of the clamp module 20. out or complete the angle adjustment; (2) when it is necessary to clamp a new clamp module 20, in this case, the end of the clamp plate rivet 22 away from the clamp plate 21 has not yet entered the core shaft receiving groove 131, and the piston 14 compresses the multiple elastic members 16 under the action of the compressed gas flowing out of the loosening outlet 114, and the end of the air avoidance slope 1411 close to the zero point upper cover 11 gradually corresponds to the position of the multiple locking balls 15. When the clamp plate rivet 22 is installed into the locking module 10, the clamp plate rivet 22 will cause the multiple locking balls 15 to move to the side close to the air avoidance slope 1411, so as to facilitate the installation of the clamp plate rivet 22 into the locking module 10. During this process, the multiple locking balls 15 are not in close contact with the locking groove 221 of the clamp plate rivet 23.

[0037] In a preferred embodiment, in order to facilitate the fixture plate rivet 22 to enter the interior of the locking module 10, see Figure 3 , Figure 4 , Figure 5 or Figure 7 A side wall of the end of the clamp plate rivet 22 away from the clamp plate 21 is provided with a resisting inclined surface 222, and the distance from the resisting inclined surface 222 to the center axis of the clamp plate rivet 22 gradually decreases from the end close to the clamp plate 21 to the end away from the clamp plate 21.

[0038] A ball lock zero-point multi-angle quick-change module of the present embodiment is provided with a fixed sealing protrusion 113 on the end face of the zero-point upper cover 11 close to the zero-point lower cover 12, a clamping release air outlet 115 connected with the clamping release air inlet channel 114 is provided on the end face of the fixed sealing protrusion 113 close to the zero-point lower cover 12, and a movable sealing protrusion 141 is provided on the end face of the piston 14 close to the zero-point upper cover 11, the outer side wall of the fixed sealing protrusion 113 is fitted with the inner side wall of the zero-point lower cover 12, and the inner side wall of the fixed sealing protrusion 113 is fitted with the outer side wall of the movable sealing protrusion 141, so that the clamping release air path formed by the clamping release air inlet channel 114 and the clamping release air outlet 115 is a closed air path, and the largest possible air pressure can be output to press down the elastic member 16 for storage It can also provide the greatest possible locking force, thereby ensuring the locking effect of the fixture module 20; by evenly arranging multiple locking balls 15 on the end face of the core shaft 13 close to the zero-point upper cover 11, the inner wall of the movable sealing protrusion 141 is in contact with the multiple locking balls 15, and an air avoidance slope 1411 is arranged on the inner wall of one end of the movable sealing protrusion 141 close to the zero-point upper cover 11, and a locking groove 221 is arranged in the middle of the fixture plate rivet 22, so that the multiple locking balls 15 can be loosened or clamped through the movement of the piston 14, so that the fixture module 20 can be quickly replaced, and at the same time, it is convenient to adjust the multiple angles by rotating the fixture plate rivet 22, thereby realizing multi-angle and high-precision processing of parts, which is easy to use and low in cost.

[0039] In order to prevent the machining debris on the zero point positioning surface from affecting the locking and positioning effect of the fixture module 20, the zero point positioning surface is the end surface of the zero point upper cover 11 away from the zero point lower cover 12, see Figure 6 The locking module 10 also includes a plurality of fixture module positioning pins 17, which are evenly fixed on the end face of the zero-point upper cover 11 away from the zero-point lower cover 12, and there is a first distance between the end face of the plurality of fixture module positioning pins 17 away from the zero-point upper cover 11 and the zero-point upper cover 11, wherein when the fixture module 20 is in a locking state, the end face of the fixture plate 21 close to the zero-point upper cover 11 contacts the plurality of fixture module positioning pins 17.

[0040] To remove the machining debris from the zero point positioning surface, refer to Figure 3 , Figure 4 or Figure 5A chip removal air inlet hole 122 is provided in the middle of the zero point lower cover 12, a core shaft air inlet hole 133 is provided at a position corresponding to the chip removal air inlet hole 122 on the core shaft 13, a fixture plate air inlet hole 223 is provided at a position corresponding to the core shaft air inlet hole 133 on the fixture plate rivet 22, and a plurality of fixture plate air outlet holes 224 are evenly provided on the side wall of one end of the fixture plate rivet 22 close to the fixture plate 21, and the plurality of fixture plate air outlet holes 224 are all aligned with the fixture plate air inlet hole 223 The two components are connected to form a chip removal air path, which goes from the chip removal air inlet 122 to the core shaft air inlet 133, to the fixture plate air inlet 223 and then to multiple fixture plate air outlets 224. The chip removal air path is independent of the clamping air path, and is also a closed air path that can provide a strong airflow to effectively remove processing debris on the zero point positioning surface. When the fixture module 20 is in a locked state, multiple fixture plate air outlets 224 are all located outside the locking module 10.

[0041] In order to remove the machining debris stuck in the gaps between the multiple locking balls 15, please refer to Figure 3 , Figure 4 or Figure 5 An eccentric inclined hole 134 is provided on the end surface of the core shaft 13 near the multiple locking balls 15. The eccentric inclined hole 134 is connected to the core shaft air inlet hole 133, so that the chip cleaning airflow can effectively form a vortex that rotates upward along the wall of the core shaft accommodating groove 131, driving the locking balls 15 to rotate together, and removing the processing debris stuck in the gaps of the multiple locking balls 15.

[0042] In order to facilitate the installation of the locking module 10 on the four-axis machining center without affecting the use of the chip removal air path, please refer to Figure 5 and Figure 8 The quick-change module also includes a fixed seat 30, a fixed groove 31 is provided on the fixed seat 30, the fixed groove 31 includes a fixed portion 311 and an accommodating portion 312, the fixed portion 311 and the accommodating portion 312 are connected, the inner diameter of the fixed portion 311 is larger than the inner diameter of the accommodating portion 312, and a total chip removal air inlet 32 ​​is provided on the upper surface of the fixed seat 30.

[0043] The zero point upper cover 11 is fixed in the fixed part 311; the outer diameter of the zero point lower cover 12 is smaller than the inner diameter of the accommodating part 312, the zero point lower cover 12 is located in the accommodating part 312, and there is a second distance between the end surface of the zero point lower cover 11 away from the zero point upper cover 11 and the bottom surface of the groove of the accommodating part 312, so that there is a gap between the zero point lower cover 11 and the accommodating part 312 for gas to flow in, and an accommodating air inlet 3121 is provided on the side wall of the accommodating part 312, and the accommodating air inlet 3121 is connected with the total chip removal air inlet 32 ​​to form a chip removal air path of total chip removal air inlet 33→accommodating air inlet 3121→chip removal air inlet hole 122→core shaft air inlet hole 133→clamp plate air inlet hole 223→multiple clamp plate air outlet holes 224.

[0044] In order to make the module structure simpler and more compact, a total clamping air inlet 33 is also provided on the upper surface of the fixed seat 30, and a fixed clamping air inlet channel 116 is provided on the end surface of the zero point upper cover 11 close to the zero point lower cover 12 at a position corresponding to the fixed part 311, and the fixed clamping air inlet channel 116 is connected with the clamping air inlet channel 114, and a fixed air inlet channel 3111 is provided on the groove bottom surface of the fixed part 311 at a position corresponding to the fixed clamping air inlet channel 116, and the fixed air inlet channel 3111 is connected with the total clamping air inlet 33, and a plug 117 is provided on the side wall of the zero point upper cover 11 at a position corresponding to the clamping air inlet channel 114, so as to form a clamping air path of total clamping air inlet 32→fixed air inlet channel 3111→fixed clamping air inlet channel 116→clamping air inlet channel 114→multiple clamping air outlet holes 115.

[0045] In actual use, the outer diameter of the zero-point upper cover 11 is equal to the inner diameter of the fixed part 311; a total chip removal air inlet joint is provided at the total chip removal air inlet 32, and a total loose clamping air inlet joint is provided at the total loose clamping air inlet 33; the chip removal connection channel between the air inlet 3121 and the total chip removal air inlet 32, and the loose clamping connection channel between the fixed air inlet channel 3111 and the total loose clamping air inlet 33 are both arranged inside the fixed seat 30; a plurality of fixed grooves 31 can be arranged on the fixed seat 30, and a locking module 10 is fixed in each fixed groove 31, so as to be able to clamp and fix multiple workpieces at the same time.

[0046] In order to ensure the positioning accuracy of the fixture module 20, please refer to Figure 3 , Figure 4 or Figure 5 ,as well as Figure 7 The fixture module 20 also includes a spring sheet 24 and a plurality of spring sheet positioning pins 25. The spring sheet 24 is fixed on the end face of the fixture plate 21 close to the zero point upper cover 11. A spring sheet through hole 241 is provided in the middle of the spring sheet 24. A plurality of spring sheet positioning holes 242 are evenly provided on the spring sheet 24. The plurality of spring sheet positioning pins 25 correspond one-to-one to the plurality of spring sheet positioning holes 242. The positions on the fixture plate 21 corresponding to the plurality of spring sheet positioning holes 242 are all provided with first fixture plate positioning holes 211. The plurality of spring sheet positioning holes 242 are connected to the corresponding first fixture plate positioning holes 211 through their corresponding spring sheet positioning pins 25. The fixture plate rivet 22 is fixedly connected to the fixture plate 21 after passing through the spring sheet through hole 241.

[0047] Furthermore, the fixture module 20 also includes a plurality of fixture positioning pins 26, and a plurality of second fixture plate positioning holes 212 are evenly arranged on the end surface of the fixture plate 21 close to the zero-point special fixture 23. The plurality of second fixture plate positioning holes 212 correspond one-to-one to the plurality of fixture positioning pins 26, and zero-point fixture positioning holes 231 are arranged at positions on the zero-point special fixture 23 corresponding to the plurality of second fixture plate positioning holes 212. The plurality of second fixture plate positioning holes 212 and their corresponding zero-point fixture positioning holes 231 are connected through their corresponding fixture positioning pins 26.

[0048] In order to further improve the positioning accuracy, multiple spring sheet locating pins 25 and their corresponding spring sheet locating holes 242 have an interference fit, multiple spring sheet locating pins 25 and their corresponding first fixture plate locating holes 211 have an interference fit, multiple fixture locating pins 26 and their corresponding second fixture plate locating holes 212 have an interference fit, and multiple fixture locating pins 26 and their corresponding LTL fixture locating holes 231 have an interference fit.

[0049] In actual use, an interference fit of about 0.005mm is produced between the holes and the matching pins. This zero-clearance fit can further improve the positioning accuracy, and can make the multi-angle repeated positioning accuracy of the zero-point special fixture 23 and the fixture plate rivet 22 in the rotation direction reach within 0.002mm.

[0050] In order to ensure the overall sealing of the locking assembly 10, a first sealing groove 1131 is provided on the outer wall of the fixed sealing protrusion 113, a second sealing groove 143 is provided on the outer wall of the piston 14, a third sealing groove 1411 is provided on the outer wall of the movable sealing protrusion 141 at one end close to the zero point upper cover 11, a fourth sealing groove 135 is provided on the side wall of the core shaft 13, and sealing rings are provided in the first sealing groove 1121, the second sealing groove 142, the third sealing groove 1411 and the fourth sealing groove 135.

[0051] Usage process: Please refer to Figure 3 , Figure 5 and Fig. 9 , fix the fixing seat 30 on the bridge plate of a conventional four-axis machining center, and fix the locking module 10 in the fixing groove of the fixing seat 30 .

[0052] When a new fixture module 20 needs to be clamped, compressed gas is supplied from the main loosening air inlet joint on the fixed seat 30, and the piston 14 compresses the multiple elastic members 16 under the action of the compressed gas flowing out from the loosening air outlet 115, and the end of the air avoidance slope 1411 close to the zero point upper cover 11 gradually corresponds to the position of the multiple locking balls 15. When the fixture plate rivet 22 is installed into the locking module 10, the fixture plate rivet 22 will cause the multiple locking balls 15 to move to the side close to the air avoidance slope 1411, so as to facilitate the installation of the fixture plate rivet 22 into the locking fixture 10. When the end face of the fixture plate 21 close to the zero point upper cover 11 contacts with the multiple fixture module positioning pins 17, the supply of compressed gas is stopped, and the piston 14, under the action of the multiple elastic members 16, makes the multiple locking balls 15 closely contact with the locking groove 221.

[0053] When it is necessary to remove the clamp module 20 or adjust the angle of the clamp module 20, compressed gas is supplied from the main clamp release air inlet joint on the fixed seat 30, and the piston 14 compresses the multiple elastic members 16 under the action of the compressed gas flowing out from the clamp release air outlet hole 115, and the end of the air avoidance slope 1411 close to the zero point upper cover 11 gradually corresponds to the position of the multiple locking balls 15, and the multiple locking balls 15 are no longer in close contact with the locking grooves 221. When the clamp module 20 is taken out or rotated, the clamp plate rivet 22 will cause the multiple locking balls 15 to move to the side close to the air avoidance slope 1411, thereby facilitating the removal of the clamp module 20 or completing the angle adjustment.

[0054] When it is necessary to remove the processing debris, compressed gas is supplied from the main chip removal air inlet connector on the fixed seat 30, and the compressed gas removes the dirty debris in the zero point positioning surface and the locking area of ​​the locking ball 15 through the chip removal air path.

[0055] The present invention provides a ball lock zero-point multi-angle quick-change module, by arranging a fixed sealing protrusion on the end surface of the zero-point upper cover close to the zero-point lower cover, arranging a clamping release air outlet hole connected with the clamping release air inlet channel on the end surface of the fixed sealing protrusion close to the zero-point lower cover, and arranging a movable sealing protrusion on the end surface of the piston close to the zero-point upper cover, the outer side wall of the fixed sealing protrusion is fitted with the inner side wall of the zero-point lower cover, and the inner side wall of the fixed sealing protrusion is fitted with the outer side wall of the movable sealing protrusion, so that the clamping release air path formed by the clamping release air inlet channel and the clamping release air outlet hole is a closed air path, and the largest possible air pressure can be output to press down the elastic member for energy storage, so as to achieve the desired effect. It should also be able to provide the greatest possible locking force to ensure the locking effect of the fixture module; by evenly arranging multiple locking balls on the end face of the core shaft close to the zero-point upper cover, the inner wall of the movable sealing protrusion is in contact with the multiple locking balls, and an air avoidance slope is provided on the inner wall of one end of the movable sealing protrusion close to the zero-point upper cover, and a locking groove is provided in the middle of the fixture plate rivet, so that the multiple locking balls can be loosened or clamped in the locking grooves by moving the piston, thereby enabling rapid replacement of the fixture module and facilitating multi-angle adjustment by rotating the fixture plate rivet, thereby realizing multi-angle and high-precision processing of parts, which is easy to use and low in cost.

[0056] The present invention has been described by the above-mentioned relevant embodiments, but the above-mentioned embodiments are only examples for implementing the present invention. In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A ball lock zero-point multi-angle quick-change module, characterized in that: Including locking module and clamp module, The locking module includes a zero point upper cover, a zero point lower cover, a core shaft, a piston, a plurality of locking balls and a plurality of elastic parts. The zero point upper cover is fixed on the zero point lower cover, an upper cover through hole is provided in the middle of the zero point upper cover, an upper cover limiting protrusion is provided on the end surface of the zero point upper cover close to the zero point lower cover at a position close to the upper cover through hole, a fixed sealing protrusion is provided on the end surface of the zero point upper cover close to the zero point lower cover at a position located on the outer periphery of the upper cover limiting protrusion, the outer side wall of the fixed sealing protrusion is fitted with the inner side wall of the zero point lower cover, a loose clamp air inlet channel is provided on the side wall of the zero point upper cover, a plurality of loose clamp air outlet holes are evenly provided on the end surface of the fixed sealing protrusion close to the zero point lower cover, and the plurality of loose clamp air outlet holes are communicated with the loose clamp air inlet channel; The core shaft is fixed to the middle part of the end surface of the zero point lower cover close to the zero point upper cover, a core shaft accommodating groove is provided on the end surface of the core shaft close to the zero point upper cover at a position corresponding to the through hole of the upper cover, and a core shaft limiting protrusion is provided on the end surface of the core shaft close to the zero point upper cover at a position corresponding to the limiting protrusion of the upper cover; The piston is sleeved on the side wall of the core shaft, the outer side wall of the piston is in contact with the inner side wall of the zero point lower cover, the multiple elastic members are located between the piston and the zero point lower cover, the multiple elastic members are evenly distributed along the outer circumference of the core shaft, a movable sealing protrusion is provided on the end surface of the piston close to the zero point upper cover, and the inner side wall of the fixed sealing protrusion is in contact with the outer side wall of the movable sealing protrusion; The multiple locking balls are evenly arranged on the end surface of the core shaft close to the zero point upper cover, the inner side wall of the movable sealing protrusion is in contact with the multiple locking balls, and an air avoidance slope is provided on the inner side wall of one end of the movable sealing protrusion close to the zero point upper cover, and the distance from the air avoidance slope to the central axis of the piston gradually decreases from the end close to the zero point upper cover to the end away from the zero point upper cover; The fixture module includes a fixture plate, a fixture plate rivet and a zero-point special fixture, wherein the zero-point special fixture is fixed on the end face of the fixture plate away from the zero-point upper cover, the fixture plate rivet is fixed on the end face of the fixture plate close to the zero-point upper cover, and a locking groove is provided in the middle of the fixture plate rivet; Among them, when the clamp module is in a locked state, no compressed gas enters the clamp release air inlet channel, the end face of the clamp plate close to the zero-point upper cover is in contact with the zero-point upper cover, the end of the clamp plate pull nail away from the clamp plate is located in the core shaft accommodating groove, and the piston makes the multiple locking balls in close contact with the locking groove under the action of the multiple elastic members; when the clamp module is not in a locked state, compressed gas enters the clamp release air inlet channel, and the piston makes the multiple locking balls not in close contact with the locking groove under the action of the compressed gas flowing out of the multiple clamp release air outlet holes.

2. A ball lock zero-point multi-angle quick-change module as claimed in claim 1, characterized in that: The locking module further comprises a plurality of fixture module positioning pins, wherein the plurality of fixture module positioning pins are evenly fixed on an end surface of the zero point upper cover away from the zero point lower cover, and a first distance exists between the end surface of the plurality of fixture module positioning pins away from the zero point upper cover and the zero point upper cover; Wherein, when the fixture module is in a locked state, the end surface of the fixture plate close to the zero point upper cover contacts the plurality of fixture module positioning pins.

3. A ball lock zero-point multi-angle quick-change module as claimed in claim 2, characterized in that: A chip removal air inlet hole is provided in the middle of the zero point lower cover, a core shaft air inlet hole is provided at a position on the core shaft corresponding to the chip removal air inlet hole, a clamp plate air inlet hole is provided at a position on the clamp plate pull nail corresponding to the core shaft air inlet hole, and a plurality of clamp plate air outlet holes are evenly provided on the side wall of one end of the clamp plate pull nail close to the clamp plate, and the plurality of clamp plate air outlet holes are all connected to the clamp plate air inlet hole; Wherein, when the clamp module is in a locked state, the plurality of clamp plate air outlets are all located outside the locking module.

4. A ball lock zero-point multi-angle quick-change module as claimed in claim 3, characterized in that: An eccentric inclined hole is provided on the end surface of the core shaft close to the multiple locking balls, and the eccentric inclined hole is communicated with the air inlet hole of the core shaft.

5. A ball lock zero-point multi-angle quick-change module as claimed in claim 3 or 4, characterized in that: It also includes a fixing seat, the fixing seat is provided with a fixing groove, the fixing groove includes a fixing part and a receiving part, the fixing part is connected to the receiving part, the inner diameter of the fixing part is larger than the inner diameter of the receiving part, and a total chip removal air inlet is provided on the upper surface of the fixing seat; The zero-point upper cover is fixed in the fixed part; the outer diameter of the zero-point lower cover is smaller than the inner diameter of the accommodating part, the zero-point lower cover is located in the accommodating part, and there is a second distance between the end surface of the zero-point lower cover away from the zero-point upper cover and the bottom surface of the groove of the accommodating part, and an accommodating air inlet is provided on the side wall of the accommodating part, and the accommodating air inlet is connected to the total chip removal air inlet.

6. A ball lock zero-point multi-angle quick-change module as claimed in claim 5, characterized in that: A total clamp-loose air inlet is also provided on the upper surface of the fixed seat, a fixed clamp-loose air inlet channel is provided on the end surface of the zero-point upper cover close to the zero-point lower cover at a position corresponding to the fixed part, the fixed clamp-loose air inlet channel is connected with the clamp-loose air inlet channel, a fixed air inlet channel is provided on the groove bottom surface of the fixed part at a position corresponding to the fixed clamp-loose air inlet channel, the fixed inlet channel is connected with the total clamp-loose air inlet, and a plug is provided on the side wall of the zero-point upper cover at a position corresponding to the clamp-loose air inlet channel.

7. The ball lock zero-point multi-angle quick-change module according to claim 1, characterized in that: The fixture module also includes a spring sheet and a plurality of spring sheet positioning pins, the spring sheet being fixed on the end face of the fixture plate close to the zero point upper cover, a spring sheet through hole being provided in the middle of the spring sheet, a plurality of spring sheet positioning holes being evenly provided on the spring sheet, the plurality of spring sheet positioning pins corresponding one to one with the plurality of spring sheet positioning holes, a first fixture plate positioning hole being provided at the positions on the fixture plate corresponding to the plurality of spring sheet positioning holes, the plurality of spring sheet positioning holes being connected to the corresponding first fixture plate positioning holes through their corresponding spring sheet positioning pins, and the fixture plate rivets being fixedly connected to the fixture plate after passing through the spring sheet through holes.

8. A ball lock zero-point multi-angle quick-change module as claimed in claim 7, characterized in that: The fixture module also includes a plurality of fixture locating pins, and a plurality of second fixture plate locating holes are evenly arranged on the end surface of the fixture plate close to the zero-point special fixture, and the plurality of second fixture plate locating holes correspond one-to-one to the plurality of fixture locating pins, and zero-point fixture plate locating holes are arranged at positions on the zero-point special fixture corresponding to the plurality of second fixture plate locating holes, and the plurality of second fixture plate locating holes and their corresponding zero-point fixture locating holes are connected through their corresponding fixture locating pins.

9. The ball lock zero-point multi-angle quick-change module according to claim 1, characterized in that: A plurality of lower cover support grooves are evenly arranged on the end surface of the zero point lower cover close to the zero point upper cover at positions located on the outer periphery of the core shaft, and the plurality of lower cover support grooves correspond one to one to the plurality of elastic members. A piston contact groove is arranged on the end surface of the piston close to the zero point lower cover at positions corresponding to the plurality of lower cover support grooves, one ends of the plurality of elastic members contact with the corresponding groove bottom surfaces of the lower cover support grooves, and the other ends of the plurality of elastic members contact with the corresponding groove bottom surfaces of the piston contact grooves.

10. The ball lock zero-point multi-angle quick-change module according to claim 1, characterized in that: An abutment slope is provided on the side wall of the end of the clamp plate rivet away from the clamp plate, and the distance from the abutment slope to the central axis of the clamp plate rivet gradually decreases from the end close to the clamp plate to the end away from the clamp plate.

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