Positioning and quick-changing device for machining center

Abstract

The utility model belongs to the technical field of tool clamps, and particularly relates to a positioning and quick-changing device of a machining center. The positioning and quick-changing device of the machining center comprises a fixing plate, a mounting plate, a positioning pin and a locking pin, a fixing plate locking hole and a fixing plate positioning hole are formed in the fixing plate in the inclined opposite direction, and a mounting plate locking hole and a mounting plate positioning hole are formed in the mounting plate in the inclined opposite direction; the positioning pin is sequentially arranged in the mounting plate positioning hole and the fixing plate positioning hole in a penetrating manner so as to position the mounting plate on the fixing plate; the locking pin is arranged in the mounting plate locking hole in a penetrating manner and is detachably and fixedly embedded in the fixing plate locking hole so as to fix the mounting plate on the fixing plate; and a plurality of mounting holes are uniformly formed in the mounting plate. The utility model can be quickly positioned and fixed so as to realize quick disassembly and quick change.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tooling fixture technical field, especially, relate to a machining center positioning quick change device. BACKGROUND

[0002] The machining center is developed from the numerical control milling machine, and the biggest difference between the machining center and the numerical control milling machine lies in that the machining center has the function of automatically exchanging machining tools, installs different tools on the tool magazine, changes the tool on the main shaft of the machining center through the automatic tool changer, and thus processes different parts and different processing types, so that the flexible production of the machining center is realized to adapt to the processing of various small batch and multi variety workpieces. Because the products processed by the machining center are diversified, the types of the machining fixtures required are also more. When the machining center needs to process different types of workpieces, the corresponding fixtures need to be replaced, and once the fixture is replaced, the position of the fixture on the workbench of the machining center needs to be re-aligned and fixed. Thus, when processing different products, a certain amount of time is spent on fixture alignment, and the operation level of the workers is also required to be higher, so that the fixture replacement efficiency is low and the alignment accuracy is low.

[0003] In the prior art, the utility model discloses a kind of replacement device of horizontal machining center fixture plate in the application number 202121569111.6 Chinese utility model patent, including base plate, fixture plate, fixed mechanism, drive mechanism, fixed mechanism is fixedly installed on the end face and side surface of base plate, drive mechanism is fixedly installed on the end face of base plate, drive mechanism is transmission connection with fixed mechanism, fixture plate is threadedly connected with fixed mechanism, and the design simplifies the dismounting process of fixture plate.

[0004] The fixture replacement in the above-mentioned technology is fixedly connected with the end face of the base plate by the fixed mechanism, but the threaded connection needs to be frequently screwed to be fixed and disassembled, which is not conducive to the quick disassembly and quick replacement of workers, and thus affects the final production efficiency. In addition, the fixed mechanism and the base plate are connected by the threaded connection mode, and the machining precision of the threaded hole and the matching precision of the threaded hole and the bolt are required to be high, so that the fixed mechanism and the base plate are not easy to be connected. UTILITY MODEL CONTENTS

[0005] To solve the technical problems existing in the prior art, the machining center positioning quick change device provided by the present application can be quickly positioned and fixed to realize quick disassembly and quick replacement.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a machining center positioning quick change device, including fixed plate, mounting plate, positioning pin and locking pin, fixed plate locking hole and fixed plate positioning hole are respectively set up in the opposite direction of fixed plate, mounting plate locking hole and mounting plate positioning hole are respectively set up in the opposite direction of mounting plate, positioning pin is in mounting plate positioning hole, fixed plate positioning hole in order to realize the positioning of mounting plate on fixed plate, locking pin is in mounting plate locking hole and can detachably fixedly embedded in fixed plate locking hole to fix mounting plate on fixed plate, a plurality of mounting holes are uniformly set up in mounting plate.

[0008] Preferably, a pin seat is fixedly embedded in the fixed plate locking hole and the fixed plate positioning hole, the pin seat comprises a pin seat body, a pin hole is formed in the middle of the pin seat body, and the positioning pin and the locking pin can be respectively inserted into the corresponding pin hole.

[0009] Preferably, a plurality of pin seat notches are formed on the upper end surface of the pin seat body, a fastening through hole is formed on the upper end surface of the pin seat notch, a fastening bolt is inserted into the fastening through hole and is threadedly connected in the fixed plate.

[0010] Preferably, the locking pin comprises a pin shaft that can be inserted into the pin hole, a handle that is fixedly connected to the upper end of the pin shaft, a pin shaft through hole and a handle threaded hole that are coaxial and communicate with each other are respectively formed on the pin shaft and the handle, a locking screw is threadedly connected in the handle threaded hole, a locking shaft is fixedly connected to the lower end of the locking screw, and the locking shaft can be rotatably inserted into the pin shaft through hole; a plurality of locking holes that communicate with the pin shaft through hole are uniformly formed on the outer circumference of the lower part of the pin shaft, a locking ball is embedded in the locking hole, and a conical surface structure is arranged on the lower part of the locking shaft, so that when the locking shaft moves downward, the locking ball can be driven to move outward of the pin shaft, and the locking ball abuts against the inner wall of the pin hole.

[0011] Preferably, the locking hole and the corresponding locking ball are provided with three groups.

[0012] Preferably, a limiting ring groove is formed on the outer circumference of the pin shaft above the locking hole, and an elastic limiting ring is embedded in the limiting ring groove.

[0013] Preferably, a pre-tightening ring groove is formed on the outer circumference of the pin shaft above the locking hole, and an elastic pre-tightening ring is embedded in the pre-tightening ring groove.

[0014] Preferably, the structure of the positioning pin is the same as that of the locking pin.

[0015] Preferably, the conical surface structure arranged on the lower part of the locking shaft is a conical frustum structure.

[0016] Preferably, the conical surface structure arranged on the lower part of the locking shaft is an arc-shaped ring groove formed along the axis of the locking shaft and on the outer circumference of the locking shaft.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model discloses a fixing plate is fixedly installed on the machining center workbench to realize the positioning and fixing of the fixing plate on the machining center, the positioning pin is inserted into the fixing plate from the mounting plate, compared with the traditional positioning pin fixed by the bolt, the positioning pin of the utility model is movable, and the mounting plate can be quickly positioned on the fixing plate, the locking pin is arranged, after the mounting plate is positioned on the fixing plate, the mounting plate is quickly fixed on the fixing plate, a plurality of mounting holes are evenly arranged on the mounting plate, and various clamps can be fixed on the mounting plate through bolts, through the above structure, the utility model can realize the quick positioning, dismounting and mounting of the mounting plate on the fixing plate, so that the quick replacement of various clamps is realized, and in addition, since the fixing plate is fixedly installed on the machining center workbench, the various clamps can reduce the alignment process after being installed on the mounting plate.

[0019] The locking pin of the utility model rotates the locking screw to drive the locking shaft to move downward, so that the locking ball in the locking hole moves outward to abut against the inner wall of the pin hole, and then the mounting plate can be quickly fixed on the mounting plate, and the quick dismounting and mounting of the locking pin and the fixing plate and the mounting plate and the fixing plate are facilitated.

[0020] The utility model discloses that the positioning pin and the locking pin are designed as the same structure, the positioning pin is inserted into the mounting plate and the fixing plate to position the mounting plate, and the mounting plate can be pre-tightened and preliminarily fixed on the fixing plate. ACCURACY OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the utility model embodiment.

[0022] Figure 2 It is the sectional structure schematic diagram of the utility model embodiment 1.

[0023] Figure 3 It is the A place enlarged structure schematic diagram of Figure 2

[0024] Figure 4 It is the B place enlarged structure schematic diagram of Figure 2

[0025] Figure 5 It is the local section structure schematic diagram of the utility model embodiment 2.

[0026] Figure 6 It is the explosion structure schematic diagram of the utility model embodiment.

[0027] Figure 7 It is the structure schematic diagram of the fixing plate of the utility model embodiment.​​

[0028] Figure 8 Structure diagram of the pin seat of the embodiment of the utility model.

[0029] Figure 9 Structure diagram of the mounting plate of the embodiment of the utility model.

[0030] Figure 10 Structure diagram of the locking pin of the embodiment of the utility model.

[0031] In the drawing: 1, fixed plate, 11, fixed plate mounting hole, 12, fixed plate locking hole, 13, fixed plate positioning hole,

[0032] 2, mounting plate, 21, mounting plate locking hole, 22, mounting plate positioning hole, 23, mounting hole

[0033] 3, positioning pin,

[0034] 4, locking pin, 41, pin shaft, 411, pin shaft through hole, 412, locking hole, 413, limiting ring groove, 414, pre-tightening ring groove, 42, handle, 421, handle threaded hole, 43, locking screw, 44, locking shaft, 441, taper structure, 45, locking ball, 46, elastic limiting ring, 47, elastic pre-tightening ring,

[0035] 5, pin seat, 51, pin seat body, 511, pin seat notch, 512, fastening through hole, 52, pin hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] Embodiment 1

[0039] Referring to the drawings, Figure 1 , 2A machining center positioning quick-change device is shown in FIGS. 1-6, which comprises a fixed plate 1, a mounting plate 2, a positioning pin 3 and a locking pin 4. The mounting plate 2 can be positioned on the fixed plate 1 and preliminarily fixed on the fixed plate 1 by the positioning pin 3. The mounting plate 2 can be locked and fixed on the fixed plate 1 by the locking pin 4.

[0040] Referring to FIGS. 1-6, Figure 7 As shown in FIGS. 1-6, the fixed plate 1 is a plate structure and has a fixed plate mounting hole 11 formed thereon. A fastening bolt (not shown in the figure) is arranged in the fixed plate mounting hole 11 and is threadedly connected to a worktable of the machining center to fix the fixed plate 1 on the worktable of the machining center. The fixed plate 1 has a fixed plate locking hole 12 and a fixed plate positioning hole 13 formed in opposite directions.

[0041] Referring to FIGS. 1-6, Figure 9 As shown in FIGS. 1-6, the mounting plate 2 is a plate structure and has a mounting plate locking hole 21 and a mounting plate positioning hole 22 formed in opposite directions. A plurality of mounting holes 23 are uniformly formed on the mounting plate 2. Various existing clamps can be mounted on the mounting plate 2, i.e., a fastening bolt is arranged in the existing clamp and is threadedly connected to the mounting hole 23.

[0042] When the mounting plate 2 needs to be positioned and mounted on the fixed plate 1, the mounting plate 2 is placed on the fixed plate 1. The positioning pin 3 is arranged in the mounting plate positioning hole 22 and the fixed plate positioning hole 13 in sequence to position the mounting plate 2 on the fixed plate 1. Then, the locking pin 4 is arranged in the mounting plate locking hole 21 and is detachably fixed in the fixed plate locking hole 12 to fix the mounting plate 2 on the fixed plate 1.

[0043] Referring to FIGS. 1-6, Figure 8 As shown in FIGS. 1-6, in order to avoid the fixed plate locking hole 12 and the fixed plate positioning hole 13 being worn during use and thus being unable to be replaced, which leads to a decrease in positioning accuracy and fixing accuracy, in the embodiment, a pin seat 5 is fixedly embedded in the fixed plate locking hole 12 and the fixed plate positioning hole 13. The pin seat 5 comprises a pin seat body 51 matched with the hole diameters of the fixed plate locking hole 12 and the fixed plate positioning hole 13. A pin hole 52 is formed in the middle of the pin seat body 51. The positioning pin 3 and the locking pin 4 can be respectively inserted into the corresponding pin holes 52.

[0044] In order to facilitate detachable fixing and mounting of the pin seat 5 in the fixed plate locking hole 12 and the fixed plate positioning hole 13, in the embodiment, the fixed plate locking hole 12 and the fixed plate positioning hole 13 are designed as a counterbore structure. A plurality of pin seat notches 511 are formed on the upper end face of the pin seat body 51. In the embodiment, three pin seat notches 511 are uniformly arranged. A fastening through hole 512 is formed on the upper end face of the pin seat notch 511. A fastening bolt (not shown in the figure) is arranged in the fastening through hole 512 and is threadedly connected to the corresponding fixed plate locking hole 12 and fixed plate positioning hole 13 of the fixed plate 1.

[0045] Referring to Figure 3 、 4 , 10, the locking pin 4 includes a pin shaft 41 which can be arranged in the pin hole 52, a disc-shaped handle 42 which is integrally formed and fixedly connected with the pin shaft 41 at the upper end of the pin shaft 41, and which is arranged perpendicularly to the pin shaft 41. A pin shaft through hole 411 and a handle threaded hole 421 which are coaxial and communicate with each other are respectively formed on the pin shaft 41 and the handle 42 along the length direction of the pin shaft 41, and the hole diameter of the handle threaded hole 421 is not greater than the hole diameter of the pin shaft through hole 411. A locking screw 43 is threadedly connected in the handle threaded hole 421, and a locking shaft 44 which is integrally formed and fixedly connected with the locking screw 43 at the lower end of the locking screw 43 can be rotatably arranged in the pin shaft through hole 411.

[0046] A plurality of locking holes 412 which communicate with the pin shaft through hole 411 are uniformly arranged on the outer circumference of the lower part of the pin shaft 41, and a locking ball 45 is arranged in the locking hole 412. In this embodiment, three sets of locking holes 412 and corresponding locking balls 45 are arranged. A conical surface structure 441 is arranged on the lower part of the locking shaft 44, and when the locking screw 43 is rotated to move the locking shaft 44 downward, the locking ball 45 can be driven to move outward of the pin shaft 41, so that the locking ball 45 abuts against and tightly abuts against the inner wall of the pin hole 52, thereby locking the locking pin 4 in the pin seat 5 of the fixing plate 1. Since the outer diameter of the handle 42 of the locking pin 4 is greater than the inner diameter of the mounting plate locking hole 21, when the locking pin 4 is locked in the pin seat 5 of the fixing plate locking hole 12, the handle 42 is pressed against the mounting plate 2, thereby fixing the mounting plate 2 on the upper end surface of the fixing plate 1.

[0047] In this embodiment, in order to facilitate the installation of the locking ball 45, the inner diameter of the locking hole 412 is not less than the outer diameter of the locking ball 45, and in order to avoid the locking ball 45 from falling off from the outside of the locking hole 412, a limiting ring groove 413 is arranged on the outer circumference of the pin shaft 41 at the upper part of the locking hole 412, and an elastic limiting ring 46 is arranged in the limiting ring groove 413.

[0048] In order to simplify the structure of the pin shaft 41, in this embodiment, the conical surface structure 441 arranged on the lower part of the locking shaft 44 is a frustum structure. When the locking shaft 44 moves upward to the uppermost position, the locking ball 45 cannot fall off from the gap between the outer surface of the frustum structure and the locking hole 412, and when the locking shaft 44 moves downward, the frustum structure can gradually push the locking ball 45 outward of the locking hole 412.

[0049] In the embodiment, in order to facilitate the plugging of the positioning pin 3, the positioning pin 3 is identical in structure to the locking pin 4 and each component is identical in size. In order to facilitate the description, the reference of each component of the positioning pin 3 directly uses the component name and the reference of the locking pin 4. Since the pin shaft 41 of the positioning pin 3 needs to cooperate with the mounting plate positioning hole 22 and the pin hole 52 to realize the positioning of the mounting plate 2, the outer diameter of the pin shaft 41 of the positioning pin 3 is adapted to the fixed plate positioning hole 13 under the premise of ensuring the positioning accuracy. Further, in order to further facilitate the plugging of the positioning pin 3, in the embodiment, the pin shaft 41 of the positioning pin 3 and the locking pin 3 is provided with a pre-tightening ring groove 414 on the outer circumference above the locking hole 412, and an elastic pre-tightening ring 47 is embedded in the pre-tightening ring groove 414. When the positioning pin 3 is inserted into the fixed plate positioning hole 13, the elastic pre-tightening ring 47 abuts against the inner wall of the fixed plate positioning hole 13.

[0050] In addition, in order to facilitate the insertion of the locking pin 4 into the mounting plate locking hole 21 and the corresponding pin seat 5, in the embodiment, the inner diameter of the mounting plate locking hole 21 is greater than the outer diameter of the elastic pre-tightening ring 47.

[0051] Embodiment 2

[0052] Referring to Figure 5 In the embodiment, the conical surface structure 441 is changed based on the embodiment 1, that is, the conical surface structure 441 arranged at the lower part of the locking shaft 44 is an arc-shaped ring groove arranged along the axis of the locking shaft 44 and on the outer circumference of the locking shaft 44. By arranging the arc-shaped ring groove structure, the locking ball 45 is not easy to be separated from the inside of the locking hole 412.

[0053] The working process of the embodiment of the utility model is as follows:

[0054] 1. The fixed plate 1 is fixed and installed on the machining center workbench through the fastening bolt, the clamp is fixed and installed on the mounting plate 2, the mounting plate 2 is placed on the fixed plate 1 and the fixed plate positioning hole 13, the mounting plate positioning hole 22 and the mounting plate locking hole 21 are in the preliminary coaxial state;

[0055] 2. The pin shaft 41 of the positioning pin 4 is sequentially inserted into the mounting plate positioning hole 22 and the fixed plate positioning hole 13, and the locking screw 43 of the positioning pin 4 is rotated through the hexagonal wrench to drive the locking shaft 44 to move downward, under the action of the locking shaft 44, the outer side of the locking ball 45 abuts against the inner wall of the corresponding pin hole 52, thereby completing the positioning and preliminary fixing of the mounting plate 2 on the fixed plate 1;

[0056] 3. Insert the locking pin 4 into the mounting plate locking hole 21 and the fixed plate locking hole 12 in sequence, make the lower end surface of the handle 42 abut and press the upper end surface of the mounting plate 2, and rotate the locking screw 43 of the locking pin 4 through the hex wrench to drive the locking shaft 44 to move downward, under the action of the locking shaft 44, the outer side of the locking ball 45 abuts against the inner wall of the corresponding pin hole 52, thereby under the joint action of the locking ball 45, the pin seat 5 and the handle 42, the final fixation of the mounting plate 2 on the fixed plate 1 is completed;

[0057] 4. When the mounting plate 2 needs to be removed, the locking screw 43 of the locking pin 4 and the locking screw 43 of the positioning pin 3 are reversely rotated through the hex wrench to make the locking ball 45 separate from the inner wall of the pin hole 52, and then the locking pin 4 and the positioning pin 3 are pulled out in sequence, and of course, when the mounting plate 2 is in a fixed state, various clamps can be directly replaced on the mounting plate 2.

[0058] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A machining center positioning quick change device, characterized in that: The application relates to a fixing plate, a mounting plate, a positioning pin and a locking pin, a plurality of mounting holes are uniformly arranged on the mounting plate, a fixing plate locking hole and a fixing plate positioning hole are oppositely arranged on the fixing plate, a mounting plate locking hole and a mounting plate positioning hole are oppositely arranged on the mounting plate. The positioning pin is sequentially arranged in the mounting plate positioning hole and the fixing plate positioning hole to position the mounting plate on the fixing plate, and the locking pin is arranged in the mounting plate locking hole and can be detachably fixed in the fixing plate locking hole to fix the mounting plate on the fixing plate.

2. The quick-change positioning device for machining centers according to claim 1, characterized in that: Pin seats are fixedly arranged in the fixing plate locking hole and the fixing plate positioning hole, the pin seat comprises a pin seat body, a pin hole is arranged in the middle of the pin seat body, and the positioning pin and the locking pin can be respectively inserted into corresponding pin holes.

3. The quick change device for positioning the machining center according to claim 2, characterized in that: A plurality of pin seat notches are arranged on the upper end surface of the pin seat body, fastening through holes are arranged on the upper end surfaces of the pin seat notches, fastening bolts are arranged in the fastening through holes and are threadedly connected with the fixing plate.

4. The quick-change positioning device for machining centers according to claim 3, characterized in that: The locking pin comprises a pin shaft which can be arranged in the pin hole, a handle which is fixedly connected with the upper end of the pin shaft, pin shaft through holes and handle threaded holes which are coaxial and communicate with each other are respectively arranged on the pin shaft and the handle, a locking screw is threadedly connected with the handle threaded hole, a locking shaft is fixedly connected with the lower end of the locking screw, and the locking shaft can be rotatably arranged in the pin shaft through hole; a plurality of locking holes which communicate with the pin shaft through holes are uniformly arranged on the outer periphery of the lower part of the pin shaft, locking balls are arranged in the locking holes, and a conical surface structure is arranged on the lower part of the locking shaft, so that the locking balls can be driven to move outward of the pin shaft when the locking shaft moves downward, and the locking balls abut against the inner wall of the pin hole.

5. The quick change device for positioning the machining center according to claim 4, characterized in that: The locking holes and the corresponding locking balls are provided with three groups.

6. The quick change device for positioning the machining center according to claim 4, characterized in that: A limiting ring groove is arranged on the outer periphery of the pin shaft above the locking hole, and an elastic limiting ring is arranged in the limiting ring groove.

7. The quick change device for positioning the machining center according to claim 4, characterized in that: A pre-tightening ring groove is arranged on the outer periphery of the pin shaft above the locking hole, and an elastic pre-tightening ring is arranged in the pre-tightening ring groove.

8. The quick change device for positioning the machining center according to claim 4, characterized in that: The structure of the positioning pin is the same as that of the locking pin.

9. The quick change device for positioning the machining center according to claim 4, characterized in that: The conical surface structure arranged on the lower part of the locking shaft is a conical frustum structure.

10. The quick change device for positioning the machining center according to claim 4, characterized in that: The conical surface structure arranged on the lower part of the locking shaft is an arc-shaped ring groove which is arranged along the axis of the locking shaft and on the outer periphery of the locking shaft.

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