Ball lock zero point multi-angle quick change module

Abstract

The application provides a ball lock zero point multi-angle quick change die module, which comprises a locking module and a clamp module. A fixed sealing protrusion is arranged on the end face of a zero point upper cover close to a zero point lower cover, and a movable sealing protrusion is arranged on the end face of a piston close to the zero point upper cover, so that a loose clamp air channel formed via a loose clamp inlet air passage and a loose clamp outlet air hole is a closed air channel, and the locking effect on the clamp module is ensured. A plurality of locking balls are uniformly arranged on the end face of a mandrel close to the zero point upper cover, the inner side wall of the movable sealing protrusion is in contact with the plurality of locking balls, an empty space inclined surface is arranged on the inner side 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 a clamp plate draw pin, so that the plurality of locking balls are loosened or clamped to the locking groove through the movement of the piston, the clamp module can be quickly replaced, and multi-angle adjustment is facilitated through the rotation of the clamp plate draw pin, multi-angle and high-precision machining of parts is realized, the application is convenient to use, and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a ball lock zero-point multi-angle quick-change module. Background Technology

[0002] In today's rapidly developing machinery manufacturing industry, parts are becoming increasingly complex and multi-faceted, placing new demands on high-precision, multi-angle, high-surface-quality, and high-efficiency machining. Currently, the machining method using conventional four-axis machining centers combined with bridge plates often requires the fabrication of many specialized tooling fixtures to process multi-angle, high-precision parts. However, tooling fabrication costs are high and production cycles are long, and the initial debugging of tooling is difficult and prone to failure. While traditional zero-point positioning can achieve high-precision positioning, it requires combination and cannot achieve multi-faceted machining of smaller parts. Using five-axis machining centers to process multi-faceted high-precision parts would further increase the product's processing costs. Summary of the Invention

[0003] To address the difficulties or high costs associated with machining multi-angle, high-precision parts in existing technologies, this invention provides a ball lock zero-point multi-angle quick-change module.

[0004] This invention discloses a ball lock zero-point multi-angle quick-change module, comprising a locking module and a clamping module. The locking module includes a zero-point upper cover, a zero-point lower cover, a spindle, a piston, multiple locking balls, and multiple elastic elements. The zero-point upper cover is fixed to the zero-point lower cover. The zero-point upper cover has a through hole in its center. A limiting protrusion is provided on the end face of the zero-point upper cover near the through hole. A fixing sealing protrusion is provided on the end face of the zero-point upper cover near the outer periphery of the limiting protrusion. The outer wall of the fixing sealing protrusion fits against the inner wall of the zero-point lower cover. An air intake channel for clamp release is provided on the side wall of the zero-point upper cover. Multiple vent holes are evenly distributed on the end face of the fixed sealing protrusion near the zero-point lower cover, and these vent holes communicate with the vent inlet channel. The mandrel is fixed to the middle of the end face of the zero-point lower cover near the zero-point upper cover. A mandrel receiving groove is provided on the end face of the mandrel near the zero-point upper cover at a position corresponding to the through hole in the upper cover. A mandrel limiting protrusion is provided on the end face of the mandrel near the zero-point upper cover at a position corresponding to the limiting protrusion in the upper cover. The piston is sleeved on the side wall of the mandrel, and the outer side wall of the piston fits against the inner side wall of the zero-point lower cover. Multiple elastic elements are located between the piston and the zero-point lower cover, and are evenly distributed along the outer circumference of the mandrel. A movable sealing protrusion is provided on the end face of the top cover, and the inner wall of the fixed sealing protrusion fits against the outer wall of the movable sealing protrusion; multiple locking balls are evenly arranged on the end face of the spindle near the top cover, and the inner wall of the movable sealing protrusion contacts all the locking balls. A clearance ramp is provided on the inner wall of the end of the movable sealing protrusion near the top cover, and the distance from the clearance ramp to the piston's central axis gradually decreases from the end near the top cover to the end away from the top cover; the clamping module includes a clamping plate, clamping plate rivets, and a zero-point special clamp. The zero-point special clamp is fixed on the end face of the clamping plate away from the top cover, and the clamping plate rivets... The pin is fixed to the end face of the clamp plate near the zero-point cover, and a locking groove is provided in the middle of the clamp plate pin. When the clamp module is in the locked state, no compressed gas enters the release air intake channel, the end face of the clamp plate near the zero-point cover is in contact with the zero-point cover, and the end of the clamp plate pin away from the clamp plate is located in the mandrel receiving groove. Under the action of multiple elastic elements, the piston makes multiple locking balls in close contact with the locking groove. When the clamp module is not in the locked state, compressed gas enters the release air intake channel, and under the action of the compressed gas flowing out from multiple release air outlets, the piston makes multiple locking balls not in close contact with the locking groove.

[0005] Preferably, the locking module further includes multiple clamping 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 multiple clamping module positioning pins away from the zero-point upper cover and the zero-point upper cover; wherein, when the clamping module is in the locking state, the end face of the clamping plate near the zero-point upper cover is in contact with the multiple clamping module positioning pins.

[0006] Furthermore, a chip removal air inlet is provided in the middle of the zero-point lower cover, a mandrel air inlet is provided at the position corresponding to the chip removal air inlet, a clamping plate air inlet is provided at the position corresponding to the mandrel air inlet, and a plurality of clamping plate air outlets are evenly provided on the side wall of the clamping plate pull near the clamping plate, and the plurality of clamping plate air outlets are all connected to the clamping plate air inlet; wherein, when the clamping module is in the locked state, the plurality of clamping plate air outlets are all located outside the locking module.

[0007] Furthermore, the end face of the mandrel near the multiple locking balls is provided with an eccentric oblique hole, which is connected to the air inlet of the mandrel.

[0008] Furthermore, based on the foregoing, the module also includes a fixing base with a fixing groove. The fixing groove includes a fixing part and a receiving part, which are connected. The inner diameter of the fixing part is larger than the inner diameter of the receiving part. A main chip removal air inlet is provided on the upper surface of the fixing base. The zero-point upper cover is fixed in the fixing part. The outer diameter of the zero-point lower cover is smaller than the inner diameter of the receiving part. The zero-point lower cover is located in the receiving part. 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 surface of the groove of the receiving part. A receiving air inlet is provided on the side wall of the receiving part, which is connected to the main chip removal air inlet.

[0009] Furthermore, on the basis of the foregoing, a main release air inlet is provided on the upper surface of the fixed base, and a fixed release air inlet channel is provided on the end face of the zero point cover near the zero point lower cover at the position corresponding to the fixed part. The fixed release air inlet channel is connected to the release air inlet channel. A fixed air inlet channel is provided on the bottom surface of the groove of the fixed part at the position corresponding to the fixed release air inlet channel. The fixed air inlet channel is connected to the main release air inlet, and a plug is provided on the side wall of the zero point cover at the position corresponding to the release air inlet channel.

[0010] Preferably, the clamping module also includes a spring sheet and multiple spring sheet positioning pins. The spring sheet is fixed to the end face of the clamping plate near the zero point cover. The spring sheet has a spring sheet through hole in the middle and multiple spring sheet positioning holes are evenly distributed on the spring sheet. The multiple spring sheet positioning pins correspond one-to-one with the multiple spring sheet positioning holes. The clamping plate has a first clamping plate positioning hole at the position corresponding to the multiple spring sheet positioning holes. The multiple spring sheet positioning holes are connected to their corresponding first clamping plate positioning holes through their corresponding spring sheet positioning pins. The clamping plate pull stud passes through the spring sheet through hole and is fixedly connected to the clamping plate.

[0011] Furthermore, the fixture module also includes multiple fixture positioning pins. Multiple second fixture plate positioning holes are evenly provided on the end face of the fixture plate near the zero-point special fixture. The multiple second fixture plate positioning holes correspond one-to-one with the multiple fixture positioning pins. Zero-point fixture plate positioning holes are provided at the positions corresponding to the multiple second fixture plate positioning holes on the zero-point special fixture. The multiple second fixture plate positioning holes are connected to their corresponding zero-point fixture positioning holes through their corresponding fixture positioning pins.

[0012] Preferably, a plurality of lower cover support grooves are evenly provided on the end face of the lower cover near the upper cover of the zero point, located on the outer periphery of the spindle. Each of the lower cover support grooves corresponds to a plurality of elastic elements. A piston contact groove is provided on the end face of the piston near the lower cover of the zero point, corresponding to the positions of the plurality of lower cover support grooves. One end of each of the plurality of elastic elements abuts against the bottom surface of its corresponding lower cover support groove, and the other end of each of the plurality of elastic elements abuts against the bottom surface of its corresponding piston contact groove.

[0013] Preferably, the side wall of the clamp plate rivet away from the clamp plate is provided with an abutting inclined surface, and the distance from the abutting inclined surface to the central axis of the clamp plate rivet gradually decreases from the end near 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 provides a fixed sealing protrusion on the end face of the upper zero-point cover near the lower zero-point cover, a release air outlet communicating with the release air inlet channel on the end face of the fixed sealing protrusion near the lower zero-point cover, and a movable sealing protrusion on the end face of the piston near the upper zero-point cover. The outer wall of the fixed sealing protrusion fits against the inner wall of the lower zero-point cover, and the inner wall of the fixed sealing protrusion fits against the outer wall of the movable sealing protrusion. This makes the release air path formed by the release air inlet channel and the release air outlet a closed air path, which can output the largest possible air pressure to press down the elastic element. The energy storage also provides the maximum possible locking force, ensuring the locking effect on the fixture module. By evenly arranging multiple locking balls on the end face of the mandrel near the zero-point cover, the inner wall of the moving sealing protrusion contacts all the locking balls. An anti-gap slope is provided on the inner wall of the end of the moving sealing protrusion near the zero-point cover, and a locking groove is provided in the middle of the fixture plate pull stud. This facilitates the movement of the piston to loosen or clamp the multiple locking balls in the locking groove, thereby enabling quick replacement of the fixture module. It also facilitates multi-angle adjustment by rotating the fixture plate pull stud, realizing multi-angle, high-precision machining of parts. It is convenient to use and low in cost. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

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

[0017] Figure 2 This is a top view 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 A cross-sectional view along the AA direction.

[0019] Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0020] Figure 5 for Figure 2 A sectional view along the CC direction.

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

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

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

[0024] Figure 9 This 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 Implementation

[0025] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0026] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] Please refer to the above. Figures 1 to 7 The present invention provides a ball lock zero-point multi-angle quick-change module, including a locking module 10 and a clamping module 20.

[0028] The locking module 10 includes a zero-point upper cover 11, a zero-point lower cover 12, a spindle 13, a piston 14, multiple locking balls 15, and multiple elastic elements 16.

[0029] The zero-point upper cover 11 is fixed on the zero-point lower cover 12. The middle part of the zero-point upper cover 11 is provided with an upper cover through hole 111. On the end face of the zero-point upper cover 11 near the zero-point lower cover 12, near the upper cover through hole 111, there is an upper cover limiting protrusion 112. On the end face of the zero-point upper cover 11 near the zero-point lower cover 12, at the outer periphery of the upper cover limiting protrusion 112, there is a fixing sealing protrusion 113. The outer side wall of the fixing sealing protrusion 113 is in contact with the inner side wall of the zero-point lower cover 12. The side wall of the zero-point upper cover 11 is provided with a release air intake channel 114. On the end face of the fixing sealing protrusion 113 near the zero-point lower cover 12, there are a plurality of release air outlet holes 115 evenly provided. The plurality of release air outlet holes 115 are connected to the release air intake channel 114 to form a release air path of release air intake channel 114 → plurality of release air outlet holes 115.

[0030] The spindle 13 is fixed to the middle of the end face of the lower zero-point cover 12 near the upper zero-point cover 11. The end face of the spindle 13 near the upper zero-point cover 11 is provided with a spindle receiving groove 131 at the position corresponding to the upper cover through hole 111. The end face of the spindle 13 near the upper zero-point cover 11 is provided with a spindle limiting protrusion 132 at the position corresponding to the upper cover limiting protrusion 112.

[0031] The piston 14 is sleeved on the side wall of the spindle 13. The outer side wall of the piston 14 is in contact with the inner side wall of the zero-point lower cover 12 to ensure the stability of the piston 14's sliding and prevent the piston 14 from jamming during long-term use. Multiple elastic elements 16 are located between the piston 14 and the zero-point lower cover 12. The multiple elastic elements 16 are evenly distributed along the outer circumference of the spindle 13 to provide a uniform force to the piston 14. A movable sealing protrusion 141 is provided on the end face of the piston 14 near the zero-point upper cover 11. The inner side wall of the fixed sealing protrusion 113 is in contact with the outer side wall of the movable sealing protrusion 141 so that the loosening air passage formed by the loosening air intake channel 114 and multiple loosening air outlets 115 is a closed air passage, which can output the largest possible air pressure to press down the elastic element 16 for energy storage, and can also provide the largest possible locking force.

[0032] In a preferred embodiment, to ensure the stability of the force exerted by the plurality of elastic elements 16 on the piston 14, please refer to [reference needed]. Figure 3 , Figure 4 or Figure 5On the end face of the zero-point lower cover 12 near the zero-point upper cover 11, a plurality of lower cover support grooves 121 are evenly provided at a position on the outer periphery of the spindle 13. Each of the lower cover support grooves 121 corresponds to a plurality of elastic elements 16. On the end face of the piston 14 near the zero-point lower cover 12, at a position corresponding to each of the lower cover support grooves 121, a piston contact groove 142 is provided. One end of each of the elastic elements 16 abuts against the bottom surface of its corresponding lower cover support groove 121, and the other end of each of the elastic elements 16 abuts against the bottom surface of its corresponding piston contact groove 142. Furthermore, the inner diameter of each of the lower cover support grooves 121 is equal to the outer diameter of its corresponding elastic element 16 to prevent the elastic element 16 from shifting under the action of compressed gas, affecting energy storage and thus the provided locking force.

[0033] Multiple locking balls 15 are evenly arranged on the end face of the spindle 13 near the zero-point cover 11. 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 restricted between the spindle 13 and the zero-point cover 11 by the movable sealing protrusion 141, the cover limiting protrusion 112 and the spindle limiting protrusion 132. The inner wall of the movable sealing protrusion 141 near the zero-point cover 11 is provided with a clearance slope 1411. The distance from the clearance slope 1411 to the central axis of the piston 14 gradually decreases from the end near the zero-point cover 11 to the end away from the zero-point cover 11, so that the multiple locking balls 15 can be released or clamped by 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 cover 11, and the fixture plate rivet 22 is fixed on the end face of the fixture plate 21 close to the zero-point cover 11. A locking groove 221 is provided in the middle of the side wall of the fixture plate rivet 22.

[0035] When the clamp module 20 is in the locked state, no compressed gas enters the release air intake channel 114, the end face of the clamp plate 21 near the zero point cover 11 contacts the zero point cover 11, the end of the clamp plate pull stud 22 away from the clamp plate 21 is located in the spindle receiving groove 131, and the piston 14, under the action of multiple elastic elements 16, makes multiple locking balls 15 in close contact with the locking groove 221; when the clamp module 20 is not in the locked state, compressed gas enters the release air intake channel 114, and the piston 14, under the action of the compressed gas flowing out from multiple release air outlets 115, makes the multiple locking balls 15 not in close contact with the locking groove 221.

[0036] In practical use, the clamp module 20 is not in the locked state in the following situations: (1) When it is necessary to remove the clamp module 20 or adjust the angle of the clamp module 20, in this case, the end of the clamp plate pull stud 22 away from the clamp plate 21 is located in the spindle receiving groove 131, and the piston 14 compresses multiple elastic elements 16 under the action of the compressed gas flowing out of the loosening air hole 115. The end of the clearance slope 1411 near the zero point cover 11 gradually corresponds to the position of 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 removed or rotated, the clamp plate pull stud 22 will cause the multiple locking balls 15 to move to the side closer to the clearance slope 1411, thereby facilitating the removal of the clamp module 20. (2) When a new clamping module 20 needs to be clamped, in this case, the end of the clamping plate rivet 22 away from the clamping plate 21 has not yet entered the mandrel receiving groove 131. The piston 14 compresses multiple elastic elements 16 under the action of the compressed gas flowing out of the loose clamping outlet 115. The end of the clearance slope 1411 near the zero point cover 11 gradually corresponds to the position of multiple locking balls 15. When the clamping plate rivet 22 is installed into the locking module 10, the clamping plate rivet 22 will cause multiple locking balls 15 to move to the side closer to the clearance slope 1411, so that the clamping plate rivet 22 can be installed into the locking module 10. During this process, multiple locking balls 15 do not make close contact with the locking groove 221 of the clamping plate rivet 22.

[0037] In a preferred embodiment, to facilitate the insertion of the clamp plate rivet 22 into the locking module 10, please refer to [link to relevant documentation]. Figure 3 , Figure 4 , Figure 5 or Figure 7 The clamp plate rivet 22 has an abutting inclined surface 222 on the side wall of the end away from the clamp plate 21. The distance from the abutting inclined surface 222 to the central axis of the clamp plate rivet 22 gradually decreases from the end near the clamp plate 21 to the end away from the clamp plate 21.

[0038] This embodiment of a ball lock zero-point multi-angle quick-change module features a fixed sealing protrusion 113 on the end face of the zero-point upper cover 11 near the zero-point lower cover 12, a release air outlet 115 communicating with the release air inlet channel 114 on the end face of the fixed sealing protrusion 113 near the zero-point lower cover 12, and a movable sealing protrusion 141 on the end face of the piston 14 near the zero-point upper cover 11. The outer wall of the fixed sealing protrusion 113 fits against the inner wall of the zero-point lower cover 12, and the inner wall of the fixed sealing protrusion 113 fits against the outer wall of the movable sealing protrusion 141. This makes the release air path formed by the release air inlet channel 114 and the release air outlet 115 a closed air path, allowing for the output of the largest possible air pressure to press down the elastic element 16 for storage. Yes, it can also provide the largest possible locking force, ensuring the locking effect on the clamping module 20; by evenly arranging multiple locking balls 15 on the end face of the mandrel 13 near the zero point cover 11, the inner wall of the movable sealing protrusion 141 is in contact with multiple locking balls 15, and a clearance slope 1411 is provided on the inner wall of the end of the movable sealing protrusion 141 near the zero point cover 11, and a locking groove 221 is provided in the middle of the clamping plate pull stud 22, so that the multiple locking balls 15 can be released or clamped in the locking groove 221 by the movement of the piston 14, thereby enabling quick replacement of the clamping module 20, and at the same time, it is easy to adjust the clamping plate pull stud 22 by rotating it to achieve multi-angle, high-precision machining of parts, which is convenient to use and low in cost.

[0039] To prevent machining debris on the zero-point positioning surface from affecting the locking and positioning effect of the clamping module 20, this zero-point positioning surface is the end face of the zero-point upper cover 11 away from the zero-point lower cover 12. Please refer to [link / reference]. Figure 6 The locking module 10 also includes multiple clamping 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. There is a first distance between the end face of the multiple clamping module positioning pins 17 away from the zero point upper cover 11 and the zero point upper cover 11. When the clamping module 20 is in the locked state, the end face of the clamping plate 21 near the zero point upper cover 11 contacts the multiple clamping module positioning pins 17.

[0040] To remove machining debris from the zero-point positioning surface, please refer to [link / reference]. Figure 3 , Figure 4 or Figure 5The zero-point lower cover 12 has a chip removal air inlet 122 in the middle. The mandrel 13 has a mandrel air inlet 133 at a position corresponding to the chip removal air inlet 122. The clamp plate rivet 22 has a clamp plate air inlet 223 at a position corresponding to the mandrel air inlet 133. Multiple clamp plate air outlets 224 are evenly provided on the side wall of the clamp plate rivet 22 near the clamp plate 21. The multiple clamp plate air outlets 224 are all connected to the clamp plate air inlets 223. The circuit is connected to form a chip removal air passage consisting of a chip removal air inlet 122 → a mandrel air inlet 133 → a fixture plate air inlet 223 → multiple fixture plate air outlets 224. This chip removal air passage is independent of the clamping air passage and is also a closed air passage, which can provide a strong airflow to effectively remove machining debris from the zero-point positioning surface. When the fixture module 20 is in the locked state, the multiple fixture plate air outlets 224 are all located outside the locking module 10.

[0041] To remove machining debris stuck in the gaps of multiple locking balls 15, please refer to [link / reference needed]. Figure 3 , Figure 4 or Figure 5 The end face of the mandrel 13 near the multiple locking balls 15 is provided with an eccentric inclined hole 134. The eccentric inclined hole 134 is connected to the mandrel air inlet 133 so as to effectively make the chip removal airflow form a vortex that rotates upward along the groove wall of the mandrel receiving groove 131, driving the locking balls 15 to rotate together, and removing the machining debris stuck in the gaps of the multiple locking balls 15.

[0042] To facilitate the installation of the locking module 10 on a four-axis machining center without affecting the use of the chip removal air path, please refer to [reference needed]. Figure 5 and Figure 8 The quick-change module also includes a fixing base 30, which has a fixing groove 31. The fixing groove 31 includes a fixing part 311 and a receiving part 312. The fixing part 311 and the receiving part 312 are connected. The inner diameter of the fixing part 311 is larger than the inner diameter of the receiving part 312. The upper surface of the fixing base 30 is provided with a total chip removal air inlet 32.

[0043] The zero-point upper cover 11 is fixed inside 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 inside the accommodating part 312, and there is a second distance between the end face of the zero-point lower cover 12 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 12 and the accommodating part 312 for gas to flow in. The side wall of the accommodating part 312 is provided with an accommodating air inlet 3121, which is connected to the main chip removal air inlet 32 ​​to form a chip removal air path of main chip removal air inlet 32 ​​→ accommodating air inlet 3121 → chip removal air inlet 122 → mandrel air inlet 133 → clamp plate air inlet 223 → multiple clamp plate air outlets 224.

[0044] To make the module structure simpler and more compact, a main release air inlet 33 is provided on the upper surface of the fixing base 30. A fixed release air inlet channel 116 is provided on the end face of the zero point upper cover 11 near the zero point lower cover 12, corresponding to the fixed part 311. The fixed release air inlet channel 116 is connected to the release air inlet channel 114. A fixed air inlet channel 3111 is provided on the bottom surface of the groove of the fixing part 311, corresponding to the fixed release air inlet channel 116. The fixed air inlet channel 3111 is connected to the main release air inlet 33. A plug 117 is provided on the side wall of the zero point upper cover 11, corresponding to the release air inlet channel 114, to form a release air path of main release air inlet 32 ​​→ fixed air inlet channel 3111 → fixed release air inlet channel 116 → release air inlet channel 114 → multiple release air outlets 115.

[0045] In actual use, the outer diameter of the zero-point cover 11 is equal to the inner diameter of the fixed part 311; a total chip removal air inlet connector is provided at the total chip removal air inlet 32, and a total clamp release air inlet connector is provided at the total clamp release air inlet 33; the chip removal connection channel between the accommodating air inlet 3121 and the total chip removal air inlet 32, and the clamp release connection channel between the fixed air inlet channel 3111 and the total clamp release air inlet 33 are all set inside the fixed base 30; multiple fixing slots 31 can be set on the fixed base 30, and each fixing slot 31 is fixed with a locking module 10 so that multiple workpieces can be clamped and fixed at the same time.

[0046] To ensure the positioning accuracy of the fixture module 20, please refer to [link / reference needed]. Figure 3 , Figure 4 or Figure 5 ,as well as Figure 7 The clamp module 20 also includes a spring sheet 24 and multiple spring sheet positioning pins 25. The spring sheet 24 is fixed on the end face of the clamp plate 21 near the zero point cover 11. The spring sheet 24 has a spring sheet through hole 241 in the middle. Multiple spring sheet positioning holes 242 are evenly provided on the spring sheet 24. The multiple spring sheet positioning pins 25 correspond one-to-one with the multiple spring sheet positioning holes 242. The clamp plate 21 has a first clamp plate positioning hole 211 at the position corresponding to the multiple spring sheet positioning holes 242. The multiple spring sheet positioning holes 242 and their corresponding first clamp plate positioning holes 211 are connected by their corresponding spring sheet positioning pins 25. The clamp plate pull stud 22 passes through the spring sheet through hole 241 and is fixedly connected to the clamp plate 21.

[0047] Furthermore, the fixture module 20 also includes multiple fixture positioning pins 26. Multiple second fixture plate positioning holes 212 are evenly provided on the end face of the fixture plate 21 near the zero-point special fixture 23. The multiple second fixture plate positioning holes 212 correspond one-to-one with the multiple fixture positioning pins 26. Zero-point fixture positioning holes 231 are provided at the positions corresponding to the multiple second fixture plate positioning holes 212 on the zero-point special fixture 23. The multiple second fixture plate positioning holes 212 and their corresponding zero-point fixture positioning holes 231 are connected by their corresponding fixture positioning pins 26.

[0048] To further improve positioning accuracy, multiple spring plate positioning pins 25 are interference-fitted with their corresponding spring plate positioning holes 242, multiple spring plate positioning pins 25 are interference-fitted with their corresponding first clamping plate positioning holes 211, multiple clamping positioning pins 26 are interference-fitted with their corresponding second clamping plate positioning holes 212, and multiple clamping positioning pins 26 are interference-fitted with their corresponding zero-point clamping positioning holes 231.

[0049] In practical use, the holes and the mating pins have an interference fit of about 0.005mm. This zero clearance fit can further improve the positioning accuracy, and can make the zero-point special fixture 23 and the fixture plate pull stud 22 achieve a multi-angle repeatable positioning accuracy of less than 0.002mm in the rotation direction.

[0050] To ensure the overall sealing of the locking module 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 is provided on the outer wall of the movable sealing protrusion 141 near the zero point cover 11, and a fourth sealing groove 135 is provided on the side wall of the spindle 13. Sealing rings are provided in the first sealing groove 1131, the second sealing groove 143, the third sealing groove and the fourth sealing groove 135.

[0051] Usage instructions: Please refer to the following: Figure 3 , Figure 5 and Figure 9 The mounting base 30 is fixed on the bridge plate of a conventional four-axis machining center, and the locking module 10 is fixed in the fixing groove of the mounting base 30.

[0052] When a new clamping module 20 needs to be clamped, compressed gas is supplied from the main release air inlet on the fixed base 30. Under the action of the compressed gas flowing out from the release air outlet 115, the piston 14 compresses multiple elastic elements 16. The end of the clearance slope 1411 near the zero point cover 11 gradually aligns with the position of multiple locking balls 15. When the clamping plate rivet 22 is inserted into the locking module 10, the clamping plate rivet 22 will cause multiple locking balls 15 to move towards the side near the clearance slope 1411, making it easier to insert the clamping plate rivet 22 into the locking module 10. When the end face of the clamping plate 21 near the zero point cover 11 contacts multiple clamping module positioning pins 17, the supply of compressed gas is stopped. Under the action of multiple elastic elements 16, the piston 14 makes multiple locking balls 15 in close 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 release air inlet on the fixed base 30. Under the action of the compressed gas flowing out from the release air outlet 115, the piston 14 compresses multiple elastic elements 16. The end of the clearance slope 1411 near the zero point cover 11 gradually aligns with the position of multiple locking balls 15. The multiple locking balls 15 are no longer in close contact with the locking groove 221. When the clamp module 20 is removed or rotated, the clamp plate pull stud 22 will cause the multiple locking balls 15 to move towards the side closer to the clearance slope 1411, thereby facilitating the removal of the clamp module 20 or the completion of the angle adjustment.

[0054] When it is necessary to remove machining debris, compressed gas is supplied from the main chip removal air inlet on the fixed seat 30. The compressed gas removes the dirt and debris from the zero-point positioning surface and the locking area of ​​the locking ball 15 through the chip removal air passage.

[0055] This invention discloses a ball lock zero-point multi-angle quick-change module. A fixed sealing protrusion is provided on the end face of the upper zero-point cover near the lower zero-point cover. A release air outlet communicating with the release air inlet channel is provided on the end face of the fixed sealing protrusion near the lower zero-point cover. A movable sealing protrusion is provided on the end face of the piston near the upper zero-point cover. The outer wall of the fixed sealing protrusion is in contact with the inner wall of the lower zero-point cover, and the inner wall of the fixed sealing protrusion is in contact with the outer wall of the movable sealing protrusion. This makes the release air path formed by the release air inlet channel and the release air outlet a closed air path, allowing for the output of the largest possible air pressure to press down the elastic element for energy storage. It should also provide the largest possible locking force to ensure the locking effect on the fixture module; by evenly arranging multiple locking balls on the end face of the mandrel near the zero point cover, the inner wall of the moving sealing protrusion contacts multiple locking balls, and a clearance slope is provided on the inner wall of the end of the moving sealing protrusion near the zero point cover. A locking groove is provided in the middle of the fixture plate pull stud, which facilitates the movement of the piston to loosen or clamp multiple locking balls in the locking groove, thereby enabling quick replacement of the fixture module. At the same time, it is easy to adjust the multi-angle by rotating the fixture plate pull stud, realizing multi-angle, high-precision machining of parts. It is convenient to use and low in cost.

[0056] The present invention has been described by the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. Furthermore, 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, any modifications and refinements made without departing from the spirit and scope of the present invention are 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, Includes locking module and clamping module, The locking module includes a zero-point upper cover, a zero-point lower cover, a spindle, a piston, multiple locking balls, and multiple elastic elements. The zero-point upper cover is fixed to the zero-point lower cover. The upper cover has a through hole in the middle. The upper cover has a limiting protrusion near the through hole on the end face of the upper cover near the zero-point lower cover. The upper cover has a fixing sealing protrusion on the end face of the upper cover near the zero-point lower cover, located on the outer periphery of the limiting protrusion. The outer side wall of the fixing sealing protrusion fits against the inner side wall of the zero-point lower cover. The side wall of the upper cover has a release air intake channel. The fixing sealing protrusion has a plurality of release air outlets evenly distributed on the end face of the lower cover near the zero-point lower cover. The plurality of release air outlets are connected to the release air intake channel. The mandrel is fixed in the middle of the end face of the lower zero-point cover near the upper zero-point cover. A mandrel receiving groove is provided on the end face of the mandrel near the upper zero-point cover at a position corresponding to the through hole of the upper cover. A mandrel limiting protrusion is provided on the end face of the mandrel near the upper zero-point cover at a position corresponding to the limiting protrusion of the upper cover. The piston is sleeved on the side wall of the mandrel, and the outer side wall of the piston is in contact with the inner side wall of the zero point lower cover. The plurality of elastic elements are located between the piston and the zero point lower cover. The plurality of elastic elements are evenly distributed along the outer periphery of the mandrel. A movable sealing protrusion is provided on the end face of the piston near the zero point upper cover. The inner side wall of the fixed sealing protrusion is in contact with the outer side wall of the movable sealing protrusion. The plurality of locking balls are evenly arranged on the end face of the spindle near the zero point cover. The inner sidewall of the movable sealing protrusion is in contact with the plurality of locking balls. An anti-air ramp is provided on the inner sidewall of the end of the movable sealing protrusion near the zero point cover. The distance from the anti-air ramp to the central axis of the piston gradually decreases from the end near the zero point cover to the end away from the zero point cover. The clamping module includes a clamping plate, a clamping plate rivet, and a zero-point special clamp. The zero-point special clamp is fixed to the end face of the clamping plate away from the zero-point cover, and the clamping plate rivet is fixed to the end face of the clamping plate close to the zero-point cover. A locking groove is provided in the middle of the clamping plate rivet. When the clamp module is in the locked state, no compressed gas enters the release air inlet channel, the end face of the clamp plate near the zero point cover contacts the zero point cover, the end of the clamp plate pull stud away from the clamp plate is located in the mandrel receiving groove, and the piston, under the action of the multiple elastic elements, makes the multiple locking balls in close contact with the locking groove; when the clamp module is not in the locked state, compressed gas enters the release air inlet channel, and the piston, under the action of the compressed gas flowing out from the multiple release air outlets, makes the multiple locking balls not in close contact with the locking groove.

2. The ball lock zero-point multi-angle quick-change module as described in claim 1, characterized in that, The locking module also includes multiple clamping 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 multiple clamping module positioning pins away from the zero point upper cover and the zero point upper cover. When the clamping module is in the locked state, the end face of the clamping plate near the zero point cover contacts the positioning pins of the plurality of clamping modules.

3. A ball lock zero-point multi-angle quick-change module as described in claim 2, characterized in that, The zero-point lower cover is provided with a chip removal air inlet in the middle, the mandrel is provided with a mandrel air inlet at a position corresponding to the chip removal air inlet, the clamp plate rivet is provided with a clamp plate air inlet at a position corresponding to the mandrel air inlet, and a plurality of clamp plate air outlets are evenly provided on the side wall of the clamp plate rivet near the clamp plate, and the plurality of clamp plate air outlets are all connected to the clamp plate air inlet; When the clamping module is in the locked state, the air vents of the plurality of clamping plates are all located outside the locking module.

4. A ball lock zero-point multi-angle quick-change module as described in claim 3, characterized in that, The end face of the mandrel near the plurality of locking balls is provided with an eccentric oblique hole, which is connected to the air inlet of the mandrel.

5. A ball lock zero-point multi-angle quick-change module as described in claim 3 or 4, characterized in that, It also includes a fixing base, which has a fixing groove. The fixing groove includes a fixing part and a receiving part. The fixing part and the receiving part are connected. The inner diameter of the fixing part is larger than the inner diameter of the receiving part. The upper surface of the fixing base is provided with a total chip removal air inlet. The zero-point upper cover is fixed inside 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 inside the accommodating part, 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 surface of the groove of the accommodating part, the side wall of the accommodating part is provided with an accommodating air inlet, and the accommodating air inlet is connected to the main chip removal air inlet.

6. A ball lock zero-point multi-angle quick-change module as described in claim 5, characterized in that, The upper surface of the fixed base is also provided with a main clamp release air inlet. The end face of the zero point upper cover near the zero point lower cover is provided with a fixed clamp release air inlet channel at a position corresponding to the fixed part. The fixed clamp release air inlet channel is connected to the clamp release air inlet channel. The bottom surface of the groove of the fixed part is provided with a fixed air inlet channel at a position corresponding to the fixed clamp release air inlet channel. The fixed air inlet channel is connected to the main clamp release air inlet. 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.

7. A ball lock zero-point multi-angle quick-change module as described in claim 1, characterized in that, The clamping module further includes a spring sheet and multiple spring sheet positioning pins. The spring sheet is fixed to the end face of the clamping plate near the zero point cover. The spring sheet has a spring sheet through hole in the middle. Multiple spring sheet positioning holes are evenly distributed on the spring sheet. The multiple spring sheet positioning pins correspond one-to-one with the multiple spring sheet positioning holes. The clamping plate has a first clamping plate positioning hole at the position corresponding to the multiple spring sheet positioning holes. The multiple spring sheet positioning holes are connected to their corresponding first clamping plate positioning holes through their corresponding spring sheet positioning pins. The clamping plate pull stud passes through the spring sheet through hole and is fixedly connected to the clamping plate.

8. A ball lock zero-point multi-angle quick-change module as described in claim 7, characterized in that, The fixture module also includes multiple fixture positioning pins. Multiple second fixture plate positioning holes are evenly provided on the end face of the fixture plate near the zero-point special fixture. The multiple second fixture plate positioning holes correspond one-to-one with the multiple fixture positioning pins. Zero-point fixture plate positioning holes are provided at positions corresponding to the multiple second fixture plate positioning holes on the zero-point special fixture. The multiple second fixture plate positioning holes are connected to their corresponding zero-point fixture positioning holes through their corresponding fixture positioning pins.

9. A ball lock zero-point multi-angle quick-change module as described in claim 1, characterized in that, On the end face of the zero-point lower cover near the zero-point upper cover, a plurality of lower cover support grooves are evenly provided at the position on the outer periphery of the spindle. The plurality of lower cover support grooves correspond one-to-one with the plurality of elastic elements. On the end face of the piston near the zero-point lower cover, a piston abutment groove is provided at the position corresponding to the plurality of lower cover support grooves. One end of each of the plurality of elastic elements abuts against the bottom surface of its corresponding lower cover support groove, and the other end of each of the plurality of elastic elements abuts against the bottom surface of its corresponding piston abutment groove.

10. A ball lock zero-point multi-angle quick-change module as described in claim 1, characterized in that, The clamp plate rivet has an abutting inclined surface on the side wall of the end away from the clamp plate. The distance from the abutting inclined surface to the central axis of the clamp plate rivet gradually decreases from the end near the clamp plate to the end away from the clamp plate.

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