Quick-change clamping tool

Abstract

The utility model relates to a quick-change clamping tool which comprises a chuck and a tray, the chuck is installed in a working area of machining equipment, the tray is connected with a part to be machined in a positioning mode and detachably connected with the chuck, and a positioning assembly and a locking assembly are arranged between the chuck and the tray. The positioning assembly is arranged between the positioning step face of the chuck shaft hole and the end face of the tray, the locking assembly is arranged between the chuck shaft hole and the outer side wall of the tray, the tray is coaxially fixed in the shaft hole of the chuck through the positioning assembly and the locking assembly, and a to-be-machined part is assembled on the chuck in a forward or inverted mode along with the tray. According to the utility model, the plurality of chucks are respectively arranged on the grinding machine, the measuring machine and the external clamping and debugging platform, and the to-be-processed part and the tray are arranged, so that the to-be-processed part can be quickly clamped on different working procedures and different equipment, the time for mounting and debugging on a machine tool is greatly shortened, and the accumulative error generated by the conversion between the working procedures is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing clamping tooling, in particular to a quick-change clamping tooling. Background Art

[0002] In the processing of many hard conical parts, the inner and outer circles of the parts need to be ground by a grinder. At the same time, because the size and shape accuracy of the parts are high, the parts need to be moved to the measuring machine for multiple measurements during the processing to measure whether the inner and outer circles of the parts are accurately processed. In addition, each part must be inspected, and the part clamping datums of the grinder and the measuring machine are not unified. This causes the parts to continuously accumulate processing errors and measurement errors during the clamping process of the equipment and the switching process between different equipment, affecting the processing accuracy of the parts. At the same time, each clamping requires independent debugging, and the adjustment process is complicated and time-consuming. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a quick-change clamping tool.

[0004] The utility model provides a quick-change clamping tool, comprising a chuck and a tray, the chuck is installed in the working area of ​​a processing device, the tray is positioned and connected to a part to be processed, and is detachably connected to the chuck, a positioning component and a locking component are arranged between the chuck and the tray, the positioning component is arranged between the positioning step surface of the chuck shaft hole and the end surface of the tray, the locking component is arranged between the chuck shaft hole and the outer side wall of the tray, the tray is coaxially fixed in the shaft hole of the chuck by the positioning component and the locking component, and the part to be processed is assembled on the chuck in a normal or inverted manner following the tray.

[0005] In some embodiments, the positioning assembly includes a positioning block arranged on the positioning step surface and a positioning groove arranged on the end surface of the tray, at least two positioning blocks are arranged on the positioning step surface at intervals, the positioning groove cooperates with the positioning block, a positioning spring sheet is arranged at the notch of the positioning groove, the positioning spring sheet is provided with a contact inclined surface matching the tapered surface of the positioning block, and the chuck is clamped with the positioning groove and the positioning spring sheet of the tray through the positioning block to position the tray.

[0006] In some embodiments, the positioning groove is arranged along the radial direction of the tray.

[0007] In some embodiments, the tray is integrally formed with a positioning groove and a positioning spring.

[0008] In some of the embodiments, both axial end surfaces of the tray are provided with positioning grooves and positioning springs.

[0009] In some embodiments, the locking assembly includes a locking step arranged on the outer wall of the tray and a turntable and a steel ball arranged inside the chuck, the turntable is installed in a chamber inside the chuck, the inner wall of the chuck shaft hole is provided with a mounting groove communicated with the chamber, the steel ball cooperating with the locking step is installed in the mounting groove, the turntable is provided with a driving part cooperating with the steel ball, a spring is installed between the turntable and the inner wall of the chamber, the chamber is connected to an external air source, the turntable moves along the inner wall of the chamber under the action of the spring and the external air source, and drives the steel ball in the mounting groove to approach or move away from the locking step through the driving part to lock or open the tray.

[0010] In some embodiments, the driving portion includes a convex surface and a groove. When the convex surface contacts the steel ball, the convex surface pushes the steel ball to move toward the locking step. When the groove contacts the steel ball, the steel ball moves away from the locking step under the action of external force and falls into the groove.

[0011] In some of the embodiments, the outer side wall of the tray is provided with two locking steps facing oppositely.

[0012] In some embodiments, a mounting hole is provided through the shaft portion of the tray, a fixing step is provided in the mounting hole, and the part to be processed is coaxially fixed on the fixing step.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the chuck and the pallet are quickly positioned by the positioning assembly, the pallet is locked on the chuck by the locking assembly, and the chuck and the pallet are quickly clamped; the chuck is installed on the grinder, the measuring machine, and the external clamping and debugging platform; after the processed parts are installed and debugged in place with the pallet on the external clamping and debugging platform, the parts can be quickly clamped in different processes and on different equipment, which greatly reduces the installation and debugging time on the machine tool, reduces the cumulative error caused by the conversion between processes, and can quickly switch to the three-coordinate measuring machine for data measurement during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the quick-change clamping tooling according to an embodiment of the present application.

[0015] Figure 2 It is a schematic diagram of the exploded structure of the quick-change clamping tooling of an embodiment of the present application.

[0016] Figure 3 It is a schematic cross-sectional structure diagram of the quick-change clamping tooling of an embodiment of the present application.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the tray according to an embodiment of the present application.

[0018] Reference numerals: 101, shaft hole; 102, chamber; 103, gas path; 104, mounting hole;

[0019] 1. Chuck; 11. Main body; 12. Positioning plate; 13. Bottom plate; 14. Connecting plate; 15. Connecting head; 16. Sealing ring; 17. Mounting groove; 18. Sealing retaining ring;

[0020] 2. Tray; 21. Fixed steps;

[0021] 3. Positioning assembly; 31. Positioning block; 32. Tapered surface; 33. Positioning groove; 34. Positioning spring; 35. Spacer block; 36. Positioning step surface;

[0022] 4. Locking assembly; 41. Turntable; 411. Driving unit; 412. Convex surface; 413. Concave surface; 414. Circular groove; 42. Spring; 43. Steel ball; 44. Locking step. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present utility model are introduced with reference to the accompanying drawings.

[0024] refer to Figure 1 The figure is a schematic diagram of the three-dimensional structure of the quick-change clamping tooling. The quick-change clamping tooling is in a circular shape as a whole. The quick-change clamping tooling consists of an outer ring chuck 1 and an inner ring pallet 2. A chuck 1 is installed on each of the grinder, measuring machine, and off-machine clamping and debugging platform (not shown in the attached figure). After the position of the chuck 1 is installed and adjusted, the relative position between each chuck 1 and the corresponding equipment will not change. The part to be processed is positioned on the pallet 2, and the pallet 2 and the chuck 1 are connected in a detachable manner by quick clamping, thereby realizing the rapid clamping of parts on equipment such as grinders and measuring machines.

[0025] refer to Figures 1 to 4 A quick-change clamping tool comprises a chuck 1 and a tray 2. The chuck 1 is installed in the working area of ​​the processing equipment. The tray 2 is positioned and connected to the part to be processed and is detachably connected to the chuck 1. A positioning component 3 and a locking component 4 are arranged between the chuck 1 and the tray 2. The positioning component 3 is arranged between the positioning step surface 36 of the axial hole 101 of the chuck 1 and the end surface of the tray 2. The locking component 4 is arranged between the axial hole 101 of the chuck 1 and the outer side wall of the tray 2. The tray 2 is coaxially fixed in the axial hole 101 of the chuck 1 through the positioning component 3 and the locking component 4. The part to be processed is assembled on the chuck 1 in a normal or inverted manner following the tray 2.

[0026] The quick-change clamping tooling of this embodiment realizes the rapid positioning of the chuck 1 and the pallet 2 through the positioning component 3, and locks the pallet 2 on the chuck 1 through the locking component 4, so as to realize the rapid clamping between the chuck 1 and the pallet 2. The chuck 1 and the pallet 2 are both in the shape of an annulus, which is conducive to clamping conical parts to be processed with a large clamping height. The chuck 1 is installed on the grinder, the measuring machine, and the external clamping and debugging platform. After the parts to be processed are installed and debugged in place with the pallet 2 on the external clamping and debugging platform, the parts can be quickly clamped in different processes and different equipment, which greatly reduces the installation and debugging time on the machine tool and reduces the cumulative error caused by the conversion between processes. During the processing, it can be realized to quickly switch to the three-coordinate measuring machine for data measurement.

[0027] In order to realize the rapid positioning of the chuck 1 and the tray 2, in this embodiment, reference Figures 1 to 4 The positioning assembly 3 includes a positioning block 31 arranged on the positioning step surface 36 and a positioning groove 33 arranged on the end surface of the tray 2. At least two positioning blocks 31 are arranged on the positioning step surface 36 at intervals. The positioning groove 33 cooperates with the positioning block 31. A positioning spring piece 34 is arranged at the notch of the positioning groove 33. The positioning spring piece 34 is provided with a contact inclined surface matching the tapered surface 32 of the positioning block 31. The chuck 1 is clamped with the positioning groove 33 and the positioning spring piece 34 of the tray 2 through the positioning block 31 to position the tray 2.

[0028] It should be further explained that a pad 35 is provided on the positioning step surface 36. The pad 35 is higher than the positioning step surface 36. The pad 35 contacts the end face of the tray 2, thereby separating the end face of the tray 2 from the positioning step surface 36 by a certain distance, reducing the friction between the tray 2 and the positioning step surface 36, and facilitating the centering between the tray 2 and the chuck 1.

[0029] It is understandable that, with such a configuration, when the tray 2 is placed into the axial hole 101 of the chuck 1, the tray 2 is allowed to be installed at a certain degree of skew angle, and the conical surface 32 of the positioning block 31 will guide the positioning spring 34 so that the positioning groove 33 of the tray 2 is docked and positioned with the positioning block 31, and when the locking assembly 4 locks the tray 2, automatic centering is achieved.

[0030] In order to form a cross positioning, in this embodiment, reference Figure 1 and Figure 4 The positioning groove 33 is arranged along the radial direction of the tray 2 .

[0031] It is understandable that, with such arrangement, the positioning blocks 31 and the positioning grooves 33 distributed in a cross shape can allow the tray 2 to be docked and positioned with the chuck 1 within a rotation range of no more than 90°, and the alignment of the chuck 1 and the tray 2 is faster.

[0032] In order to ensure the positioning accuracy, in this embodiment, reference Figure 1 and Figure 4 The tray 2 is integrally formed with a positioning groove 33 and a positioning spring piece 34 .

[0033] It is understandable that, with such a configuration, the positioning groove 33 and the positioning spring piece 34 are integrally formed to ensure the processing accuracy of the tray 2, reduce the positioning error of the tray 2 and the chuck 1, and enable the tray 2 and the chuck 1 to be accurately positioned.

[0034] In order to realize the part being mounted upright or reversed on the chuck 1, in this embodiment, reference Figure 1 and Figure 4 The two axial end faces of the tray 2 are both provided with positioning grooves 33 and positioning spring pieces 34 .

[0035] It can be understood that, in order to ensure that the positioning relationship between the part to be processed and the pallet 2 does not change, the direction in which the part to be processed is installed on the pallet 2 is fixed, and the chuck 1 is fixed on the equipment and does not change its position. However, the inner circle and outer circle of the part to be processed need to be processed and measured separately, so the pallet 2 needs to be mounted upright or inverted on the chuck 1, so that the part to be processed can be mounted upright or inverted on the chuck 1, which is convenient for the processing and measurement of the inner circle and outer circle.

[0036] In order to lock the tray 2 on the chuck 1, in this embodiment, refer to Figure 2 and Figure 3 The locking assembly 4 includes a locking step 44 arranged on the outer wall of the tray 2 and a turntable 41 and a steel ball 43 arranged inside the chuck 1. The turntable 41 is installed in the chamber 102 inside the chuck 1. The inner wall of the axial hole 101 of the chuck 1 is provided with a mounting groove 17 communicated with the chamber 102. The steel ball 43 cooperating with the locking step 44 is installed in the mounting groove 17. The turntable 41 is provided with a driving part 411 cooperating with the steel ball 43. A spring 42 is installed between the turntable 41 and the inner wall of the chamber 102. The chamber 102 is connected to an external air source. The turntable 41 moves along the inner wall of the chamber 102 under the action of the spring 42 and the external air source, and drives the steel ball 43 in the mounting groove 17 to approach or move away from the locking step 44 through the driving part 411 to lock or open the tray 2.

[0037] It needs to be further explained that if Figure 2 and Figure 3As shown, for the convenience of assembly, the chuck 1 includes a main body 11, a positioning plate 12, a bottom plate 13, a connecting plate 14 and a rotating disk 41. The main body 11, the positioning plate 12 and the connecting plate 14 are coaxially fixed on the bottom plate 13. A chamber 102 is formed between the main body 11, the connecting plate 14 and the bottom plate 13. An air path 103 communicating with the chamber 102 is provided on the bottom plate 13, and an external air source is connected through a connector 15. The rotating disk 41 is assembled in the chamber 102. There is a gap between the outer wall of the rotating disk 41 and the inner wall of the chamber 102, between the bottom plate 13 and the main body 11, and between the bottom plate 13 and the connecting plate 41. Sealing rings 16 are provided between the connecting plates 14, a plurality of circular grooves 414 are provided at equal angles on the turntable 41, a plurality of springs 42 are installed in the circular grooves 414, the circular grooves 414 are provided along the axial direction of the chuck 1, a plurality of mounting grooves 17 are provided at equal angles between the main body 11 and the connecting plate 14, a plurality of steel balls 43 are placed in each mounting groove 17, the width of the mounting groove 17 is smaller than the diameter of the steel ball 43, so as to prevent the steel ball 43 from escaping from the notch of the mounting groove 17, the positioning plate 12 is located on the inner side of the connecting plate 14, and the end face of the positioning plate 12 is the positioning step face 36.

[0038] In order to prevent the debris generated by grinding from entering the steel balls 43 and the turntable 41, a sealing ring 18 is fixed to the inner wall of the main body 11. The sealing ring 18 cooperates with one of the locking steps 44 to seal the gap between the outer wall of the tray 2 and the inner wall of the main body 11, thereby ensuring that the grinding debris enters the steel balls 43 and the turntable 41.

[0039] It can be understood that, with such an arrangement, when it is necessary to lock the pallet 2, the pallet 2 is loaded into the chuck 1, the chuck 1 is deflated, the elastic force of the spring 42 presses the turntable 41 downward, and the turntable 41 simultaneously drives multiple steel balls 43 to move toward the locking step 44 through the driving part 411, thereby locking the pallet 2. Multiple steel balls 43 act on the pallet 2 at the same time, thereby realizing automatic centering of the pallet 2 and the chuck 1, and ensuring accurate positioning of the pallet 2 and the chuck 1; when it is necessary to take the parts to be processed and the pallet 2 out of the chuck 1, the chuck 1 is inflated, the gas pressure pushes the turntable 41 upward, and the driving part 411 of the turntable 41 can release the steel balls 43, thereby causing the steel balls 43 to loosen the pallet 2.

[0040] In order to drive the steel ball 43, in this embodiment, reference Figure 2 and Figure 3 The driving part 411 includes a convex surface 412 and a groove 413. When the convex surface 412 contacts the steel ball 43, the convex surface 412 pushes the steel ball 43 to move toward the locking step 44. When the groove 413 contacts the steel ball 43, the steel ball 43 moves away from the locking step 44 under the action of external force and falls into the groove 413.

[0041] It is understandable that, with such a configuration, when the chuck 1 is deflated, the spring 42 presses the turntable 41 downward, and the inclined convex surface 412 of the turntable 41 compresses the steel ball 43 to move toward the tray 2, locking the locking step 44 of the tray 2. When the chuck 1 is inflated, the gas pressure pushes the turntable 41 upward, and the groove 413 of the turntable 41 can release the steel ball 43, so that the steel ball 43 loosens the locking step 44 of the tray 2, and the tray 2 and the parts to be processed are taken out of the chuck 1 by hoisting or manpower.

[0042] In order to lock the tray 2 when the chuck 1 is installed upright or inverted, in this embodiment, Figure 4 The outer side wall of the tray 2 is provided with two locking steps 44 facing opposite directions.

[0043] It is understandable that, with such an arrangement, the direction in which the parts to be processed are installed on the pallet 2 is fixed, and the position of the chuck 1 will not change when it is fixed on the equipment. When the pallet 2 is installed upright or inverted on the chuck 1, the chuck 1 needs to lock the corresponding locking steps 44. The locking and fixation of the upright or inverted pallet 2 can be achieved through two locking steps 44 facing opposite directions.

[0044] In order to fix the parts to be processed on the pallet 2, in this embodiment, reference Figures 2 to 4 The axial portion of the tray 2 is penetrated with a mounting hole 104 , a fixing step 21 is provided in the mounting hole 104 , and the part to be processed is coaxially fixed on the fixing step 21 .

[0045] It can be understood that, with such an arrangement, when the pallet 2 is loaded with the part to be processed, the part to be processed is inserted into the mounting hole 104 until the outer step of the part to be processed abuts against the fixed step 21, and then a pressure plate (not shown in the accompanying drawings) adapted to the fixed step 21 is coaxially installed, and the pressure plate is fixed to the fixed step 21 by bolts, thereby fixing the part to be processed on the pallet 2.

[0046] The clamping process of this embodiment is as follows: at the off-machine clamping and debugging platform, the parts to be processed are loaded into the tray 2, and the matching annular pressure plate presses the parts to be processed onto the fixed step 21 of the tray 2. The pressure plate and the fixed step 21 of the tray 2 are fixed by bolts, and then the tray 2 is loaded into the chuck 1, the chuck 1 is deflated, and the spring 42 presses the turntable 41 downward, and the inclined convex surface 412 of the turntable 41 presses the steel ball 43 to lock the tray 2. When the parts to be processed and the tray 2 need to be taken out of the chuck 1, the chuck 1 is inflated, and the gas pressure pushes the turntable 41 upward, and the groove 413 structure of the turntable 41 can release the steel ball 43, so that the steel ball 43 loosens the tray 2.

[0047] The embodiment of the present application uses air pressure and the elastic force of the spring 42 to control the locking of the chuck 1 to the pallet 2. When it is necessary to clean chips or load some heavier parts, lifting is required. Since the parts to be processed and the pallet 2 have been positioned on the external clamping and debugging platform, the pallet 2 and the parts to be processed can be clamped onto the chuck 1 of the equipment within a few minutes, which can greatly reduce the downtime of the machine tool and improve production efficiency and capacity.

[0048] The conical parts to be processed mentioned in this embodiment are conical antenna covers, conical radar covers and other parts, for example, a radar conical antenna cover disclosed in the utility model with application number CN202221611153.6.

[0049] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A quick-change clamping tool, comprising a chuck and a tray, wherein the chuck is installed in the working area of ​​the processing equipment, the tray is positioned and connected to the part to be processed, and is detachably connected to the chuck, characterized in that: A positioning assembly and a locking assembly are provided between the chuck and the pallet. The positioning assembly is provided between the positioning step surface of the chuck shaft hole and the end surface of the pallet. The locking assembly is provided between the chuck shaft hole and the outer side wall of the pallet. The pallet is coaxially fixed in the shaft hole of the chuck by the positioning assembly and the locking assembly. The part to be processed is assembled on the chuck in an upright or inverted manner following the pallet.

2. The quick-change clamping tool according to claim 1, characterized in that: The positioning assembly includes a positioning block arranged on the positioning step surface and a positioning groove arranged on the end surface of the tray, at least two positioning blocks are arranged on the positioning step surface at intervals, the positioning groove cooperates with the positioning block, a positioning spring sheet is arranged at the notch of the positioning groove, the positioning spring sheet is provided with a contact inclined surface matching the tapered surface of the positioning block, and the chuck is clamped with the positioning groove and the positioning spring sheet of the tray through the positioning block to position the tray.

3. The quick-change clamping tool according to claim 2, characterized in that: The positioning groove is arranged along the radial direction of the tray.

4. The quick-change clamping tool according to claim 2, characterized in that: The tray is integrally formed with a positioning groove and a positioning spring sheet.

5. The quick-change clamping tool according to claim 2, characterized in that: The two axial end faces of the tray are both provided with positioning grooves and positioning springs.

6. The quick-change clamping tool according to claim 1, characterized in that: The locking assembly includes a locking step arranged on the outer wall of the tray and a turntable and a steel ball arranged inside the chuck. The turntable is installed in a chamber inside the chuck. The inner wall of the chuck shaft hole is provided with a mounting groove communicated with the chamber. The steel ball cooperating with the locking step is installed in the mounting groove. The turntable is provided with a driving part cooperating with the steel ball. A spring is installed between the turntable and the inner wall of the chamber. The chamber is connected to an external air source. The turntable moves along the inner wall of the chamber under the action of the spring and the external air source, and drives the steel ball in the mounting groove to approach or move away from the locking step through the driving part to lock or open the tray.

7. The quick-change clamping tool according to claim 6, characterized in that: The driving part includes a convex surface and a groove. When the convex surface contacts the steel ball, the convex surface pushes the steel ball to move toward the locking step. When the groove contacts the steel ball, the steel ball moves away from the locking step under the action of external force and falls into the groove.

8. The quick-change clamping tool according to claim 6, characterized in that: The outer side wall of the tray is provided with two locking steps facing oppositely.

9. The quick-change clamping tool according to claim 1, characterized in that: The tray shaft portion is penetrated by a mounting hole, a fixing step is arranged in the mounting hole, and the part to be processed is coaxially fixed on the fixing step.

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