A precision positioning jig for machining hardware

Abstract

The present application relates to hardware processing technical field, specifically is related to a kind of precision positioning jig for hardware mechanical processing, including processing table, storage tray and auxiliary control mechanism;Storage tray rotation is set on processing table, at least three guide rails are opened in storage tray, one mounting seat is slidably installed on each guide rail, first linear driver and push rod are equipped on mounting seat, and first linear driver is used to drive push rod telescopic;Mounting seat is equipped with clamp for fixing workpiece, clamp includes main clamping block and auxiliary clamping block, auxiliary clamping block is hinged with main clamping block, and rubber layer is equipped on the side of auxiliary clamping block away from mounting seat;Linear drive assembly is equipped on storage tray.The present application is adhered to workpiece surface by multiple groups of deformable clamp, the position of workpiece is stabilized during processing, precision positioning function is realized, and the problem that workpiece is inclined and workpiece processing precision is influenced due to vibration effect during processing is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware machining, in particular to a precision positioning jig for hardware machining. BACKGROUND

[0002] Hardware usually needs to achieve high machining precision. If the workpiece cannot be stably fixed during machining, it may move or vibrate, resulting in machining errors and affecting the quality and performance of the product. Since the shape of hardware is not fixed, a special jig is usually used for fixing during machining, which leads to the need to repeatedly replace the jig when machining different types of workpieces, which is extremely cumbersome and affects the machining efficiency.

[0003] Therefore, the positioning jig for precision hardware machining disclosed in Chinese patent CN220241250U is provided with a groove and a screw hole, which is beneficial to realize the installation and fixing effect of the fixing plate. According to the different needs of hardware machining, the fixing plate is placed on the machining device, and the screw is installed on the machining device through the screw hole thread, and the nut at the upper end of the screw is located in the groove, which is beneficial to protect the nut.

[0004] However, during the machining of hardware, especially during drilling, the workpiece may be affected by vibration, which may cause the workpiece to deviate on the jig, thereby affecting the machining precision of the workpiece. SUMMARY

[0005] In view of the above problems, a precision positioning jig for hardware machining is provided, which solves the problem of workpiece deviation and affects the machining precision of the workpiece caused by vibration during machining by using a plurality of deformable clamps for fixing the workpiece.

[0006] To solve the problems in the prior art, the present application provides a precision positioning jig for hardware machining, comprising a machining table, a storage tray and an auxiliary control mechanism. The storage tray is rotatably arranged on the machining table, and at least three guide rails are formed on the storage tray. Each guide rail is slidably provided with an installation seat, and a first linear actuator and a push rod are arranged on the installation seat. The first linear actuator is used to drive the push rod to extend or retract. A clamp for fixing the workpiece is arranged on the installation seat. The clamp comprises a main clamping block and a secondary clamping block. The secondary clamping block is hingedly connected to the main clamping block, and a rubber layer is arranged on the side of the secondary clamping block away from the installation seat. At least two push rods are arranged on the installation seat, one of which is connected to the main clamping block, and the other is hingedly connected to the secondary clamping block. A linear driving assembly is arranged on the storage tray for driving the installation seat to move along the guide rail. When the main clamping block abuts against the workpiece, the rubber layer of the secondary clamping block abuts against the workpiece under the pushing action of the push rod.

[0007] Preferably, two sets of clamps are arranged on each mounting seat, and the two sets of clamps are distributed on both sides of the first linear driver along the radial direction of the placement disc.

[0008] Preferably, the mounting seat is provided with an auxiliary control mechanism for fixing the clamps, the auxiliary control mechanism comprising a first locking assembly, a second locking assembly and a control assembly; the first locking assembly is used for fixing the main clamp block; the second locking assembly is used for fixing the auxiliary clamp block; the control assembly is used for controlling the opening and closing of the first locking assembly and the second locking assembly; in the working state, when the two sides of the main clamp block abut against the workpiece and the first linear driver respectively, the first locking assembly limits the movement of the main clamp block; when the auxiliary clamp block abuts against the surface of the workpiece and the first locking assembly fixes the main clamp block, the second locking assembly fixes the auxiliary clamp block.

[0009] Preferably, the first locking assembly comprises a first clamping block and a first elastic member; the first clamping block is slidingly installed on the mounting seat; the two ends of the first elastic member are connected with the first clamping block and the mounting seat respectively; the bottom end of the main clamp block is provided with a first clamping groove matched with the first clamping block; when the first clamping block is clamped with the first clamping groove, the movement of the main clamp block is limited.

[0010] Preferably, the second locking assembly comprises a second clamping block and a second elastic member; the second clamping block is slidingly installed on the auxiliary clamp block; the two ends of the second elastic member are connected with the auxiliary clamp block and the second clamping block respectively; the mounting seat is provided with a second clamping groove matched with the second clamping block, and the second clamping groove is provided with at least three second clamping grooves which are equidistantly distributed.

[0011] Preferably, the control assembly comprises a push plate and an extension block; the mounting seat is provided with a second linear driver for driving the push plate; the push plate is located above the extension block; the extension block is connected with the first clamping block.

[0012] Preferably, a support is movably arranged on the mounting seat, and the support is provided with a filling block matched with the second clamping groove; and the mounting seat is provided with a first transmission assembly, and the support is in transmission connection with the first clamping block through the first transmission assembly.

[0013] Preferably, the bottom of the support is provided with a guide rod in sliding cooperation with the mounting seat; the first transmission assembly comprises a bracket and a transmission rod; the bracket is connected with the mounting seat, and the transmission rod is rotatably arranged on the bracket, and the two ends of the transmission rod are hingedly connected with the support and the first clamping block respectively.

[0014] Preferably, the linear driving assembly comprises a screw rod and a rotary driver; the screw rod is provided with at least two screw rods corresponding to the mounting seat one by one, and the screw rod is rotatably arranged on the placement table and is in threaded connection with the mounting seat; the rotary driver is arranged on the placement table, and the rotary driver is used for driving one of the screw rods to rotate; the placement table is provided with a second transmission assembly, and the plurality of screw rods are in transmission connection through the second transmission assembly.

[0015] Preferably, the second transmission assembly comprises a gear ring, a rotating shaft, a rotating gear and a bevel gear; the gear ring and the rotating shaft are both rotationally arranged on the machining table, the axis of the gear ring is collinear with the axis of the placing disc; the rotating gear is sleeved on the rotating shaft, and the rotating gears are all in meshing connection with the gear ring; the bevel gears are provided in two, the two bevel gears are respectively sleeved on the rotating shaft and the screw rod, and the two bevel gears are in meshing connection.

[0016] The present application has the following beneficial effects compared with the prior art:

[0017] 1. The present application can stabilize the position of the workpiece during machining by using multiple deformable clamps to adhere to the surface of the workpiece, achieving precise positioning function and improving the machining accuracy of the workpiece. During machining, the linear drive assembly controls the multiple mounting seats to move towards the axis of the placing disc until the main clamping blocks on the multiple mounting seats are in abutment with the surface of the workpiece. At this time, the secondary clamping blocks are in abutment with the workpiece under the action of the pushing force provided by the push rod, thereby stabilizing the position of the workpiece through the secondary clamping blocks on both sides of the main clamping blocks, avoiding relative sliding between the workpiece and the main clamping blocks, and solving the problem of workpiece deflection caused by vibration during machining, which affects the machining accuracy of the workpiece.

[0018] 2. The present application can clamp the workpiece from the outside of the workpiece and support and fix the workpiece from the inside of the workpiece by arranging a set of clamps on both sides of the mounting seat, improving the adaptability of the clamp. This dual-action mechanism enhances the adaptability of the clamp to various shapes and sizes of workpieces. Whether for regular or irregular shaped workpieces, precise and stable fixation can be achieved, ensuring that the workpiece will not displace or deform during machining due to the application of external force, effectively improving the machining accuracy and efficiency.

[0019] 3. The present application realizes the function of fixing the clamp through the first locking assembly, the second locking assembly and the control assembly, avoiding the situation that the workpiece is pushed by the secondary clamping block due to external force during machining, further improving the positioning accuracy of the workpiece during machining. After the first locking assembly fixes the main clamping block, the second locking assembly fixes the secondary clamping block, so that the workpiece and the multiple clamping blocks are in a relatively fixed state during machining, avoiding the displacement of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of a precision positioning jig for machining hardware.

[0021] Figure 2 It is a perspective view of a precision positioning jig for machining hardware when fixing the workpiece to the placing disc.

[0022] Figure 3It is a three-dimensional schematic view of the mounting seat and clamp in the precision positioning jig for hardware machining when the clamp is in a fixed state.

[0023] Figure 4 It is a three-dimensional exploded schematic view of the mounting seat and clamp in the precision positioning jig for hardware machining.

[0024] Figure 5 It is a three-dimensional exploded schematic view of the single-sided clamp in the precision positioning jig for hardware machining.

[0025] Figure 6 It is Figure 5 It is a partial enlarged schematic view of A in the figure.

[0026] Figure 7 It is a three-dimensional exploded schematic view of the clamp and auxiliary control mechanism in the precision positioning jig for hardware machining.

[0027] Figure 8 It is a three-dimensional exploded schematic view of the auxiliary control mechanism in the precision positioning jig for hardware machining.

[0028] Figure 9 It is a three-dimensional schematic view of the first clamping block, support, and first transmission assembly in the precision positioning jig for hardware machining.

[0029] Figure 10 It is a three-dimensional schematic view of the placement disc, clamp, linear drive assembly, and second transmission assembly in the precision positioning jig for hardware machining.

[0030] Figure 11 It is Figure 10 It is a partial enlarged schematic view of B in the figure.

[0031] In the figure, the labels are: 1 - machining table; 2 - placement disc; 21 - guide rail; 211 - mounting seat; 2111 - first linear drive; 2112 - push rod; 2113 - second clamping groove; 22 - clamp; 221 - main clamping block; 2211 - first clamping groove; 222 - auxiliary clamping block; 2221 - rubber layer; 23 - linear drive assembly; 231 - screw; 232 - rotary drive; 24 - second transmission assembly; 241 - gear ring; 242 - rotating shaft; 243 - rotary gear; 244 - bevel gear; 3 - auxiliary control mechanism; 31 - first locking assembly; 311 - first clamping block; 312 - first elastic member; 32 - second locking assembly; 321 - second clamping block; 322 - second elastic member; 33 - control assembly; 331 - push plate; 332 - extension block; 333 - support; 3331 - filling block; 3332 - guide rod; 34 - second linear drive; 35 - first transmission assembly; 351 - bracket; 352 - transmission rod; 4 - workpiece. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.

[0033] Referring to Figures 1-4 The precision positioning jig for machining hardware includes a machining table 1, a storage tray 2 and an auxiliary control mechanism 3. The storage tray 2 is rotationally arranged on the machining table 1. The storage tray 2 is provided with at least three guide rails 21. Each guide rail 21 is slidably provided with an installation seat 211. The installation seat 211 is provided with a first linear driver 2111 and a push rod 2112. The first linear driver 2111 is used to drive the push rod 2112 to extend or retract. The installation seat 211 is provided with a clamp 22 used to fix a workpiece 4. The clamp 22 includes a main clamp block 221 and an auxiliary clamp block 222. The auxiliary clamp block 222 is hingedly connected with the main clamp block 221. The side of the auxiliary clamp block 222 away from the installation seat 211 is provided with a rubber layer 2221. The installation seat 211 is provided with at least two push rods 2112. One of the push rods 2112 is connected with the main clamp block 221, and the other push rod 2112 is movably hingedly connected with the auxiliary clamp block 222. The storage tray 2 is provided with a linear driving assembly 23 used to drive the installation seat 211 to move along the guide rail 21. When the main clamp block 221 abuts against the workpiece 4, the rubber layer 2221 of the auxiliary clamp block 222 abuts against the workpiece 4 under the pushing action of the push rod 2112.

[0034] The present application realizes the precise positioning function by the multiple groups of deformable clamps 22 adhering to the surface of the workpiece 4, and stabilizing the position of the workpiece 4 in the machining process, thereby improving the machining accuracy of the workpiece 4. In the machining process, the multiple mounting seats 211 are controlled by the linear driving assembly 23 to move towards the direction close to the axis of the placement disc 2 until the main clamping blocks 221 on the multiple mounting seats 211 are all in abutment with the surface of the workpiece 4. At this time, the auxiliary clamping blocks 222 are in abutment with the workpiece 4 under the pushing force provided by the push rods 2112, and then the position of the workpiece 4 is stabilized by the auxiliary clamping blocks 222 on both sides of the main clamping block 221, avoiding the relative sliding between the workpiece 4 and the main clamping block 221, solving the problem that the workpiece 4 is inclined due to the vibration in the machining process, affecting the machining accuracy of the workpiece 4. The first linear driver 2111 is preferably a cylinder with multiple driving ends, and the multiple push rods 2112 are synchronously telescoped under the gas source pressure of the first linear driver 2111. When machining, the operator first places the workpiece 4 on the placement disc 2, and then drives the multiple mounting seats 211 to move towards the axis of the placement disc 2 at the same time by the linear driving assembly 23. At this time, until the main clamping blocks 221 on the multiple mounting seats 211 are all in abutment with the surface of the workpiece 4, and at the same time, the main clamping blocks 221 and the auxiliary clamping blocks 222 are subjected to the extrusion action of the workpiece 4, and the extrusion force overcomes the gas pressure of the first linear driver 2111 to push the push rods 2112 on the main clamping blocks 221 and the auxiliary clamping blocks 222 to shrink, until the main clamping blocks 221 are in abutment with the outer surface of the first linear driver 2111, and the auxiliary clamping blocks 222 are in an inclined state under the pushing action of the push rods 2112, and the rubber layer 2221 on the auxiliary clamping blocks 222 adheres to the surface of the workpiece 4. The workpiece 4 is stably supported by the cooperation of the multiple groups of clamps 22, avoiding the deviation of the workpiece 4 in the machining process, and ensuring the machining accuracy of the workpiece 4.

[0035] Referring to Figure 3 and Figure 4 : Each mounting seat 211 is provided with two groups of clamps 22, and the two groups of clamps 22 are distributed on both sides of the first linear driver 2111 along the radial direction of the placement disc 2.

[0036] The present application can clamp the workpiece 4 from the outside of the workpiece 4 and support and fix the workpiece 4 from the inside of the workpiece 4 by arranging a set of clamps 22 on both sides of the mounting seat 211, thereby improving the adaptability of the clamps 22. The double-acting mechanism enhances the adaptability of the clamps 22 to the shapes and sizes of various workpieces 4, and can accurately and stably fix the workpieces 4 regardless of their regular or irregular shapes, ensuring that the workpiece 4 will not displace or deform due to external force during processing, thereby effectively improving the processing precision and efficiency. When processing the disc-shaped workpiece 4, if the inner side of the workpiece 4 has a circular groove, when processing the outer surface of the workpiece 4, the position of the mounting seat 211 and the clamp 22 is adjusted by the linear drive assembly 23, so that the mounting seat 211 moves to the end of the guide rail 21 close to the axis of the placement disc 2, then the workpiece 4 is placed on the placement disc 2, and then the clamp 22 is controlled by the linear drive assembly 23 to move along the guide rail 21 towards the outside of the placement disc 2, and the workpiece 4 is supported and fixed by the abutment of multiple sets of clamps 22 with the inner ring of the workpiece 4. When processing the inner ring of the workpiece 4, the workpiece 4 is clamped from the outer ring of the workpiece 4 by the clamp 22, and then the workpiece 4 is processed. The deformable clamp 22 can better fit the inner surface or outer surface of the workpiece 4 through the inclined auxiliary clamp block 222, thereby improving the acting force between the clamp 22 and the workpiece 4 and the stability of the workpiece 4. The double-sided clamp 22 design can be quickly adjusted and replaced according to the specific requirements of the workpiece 4, without the need for complex reassembly process, thereby significantly improving the flexibility and operation efficiency of the production line.

[0037] Referring to Figure 4 and Figure 5 The mounting seat 211 is provided with an auxiliary control mechanism 3 for fixing the clamp 22, and the auxiliary control mechanism 3 comprises a first locking assembly 31, a second locking assembly 32 and a control assembly 33. The first locking assembly 31 is used to fix the main clamp block 221. The second locking assembly 32 is used to fix the auxiliary clamp block 222. The control assembly 33 is used to control the opening and closing of the first locking assembly 31 and the second locking assembly 32. In the working state, when the two sides of the main clamp block 221 abut against the workpiece 4 and the first linear driver 2111 respectively, the first locking assembly 31 limits the movement of the main clamp block 221. When the auxiliary clamp block 222 abuts against the surface of the workpiece 4, and the main clamp block 221 is fixed by the first locking assembly 31, the second locking assembly 32 fixes the auxiliary clamp block 222.

[0038] The application realizes the function of the fixing clamp 22 through the first locking assembly 31, the second locking assembly 32 and the control assembly 33, avoids the situation that the workpiece 4 is pushed by the secondary clamp block 222 under the action of external force during the machining process, and further improves the positioning accuracy of the workpiece 4 during the machining process. During the positioning process of the workpiece 4, when the primary clamp block 221 is in contact with the workpiece 4, the primary clamp block 221 is subjected to the extrusion action of the workpiece 4, and then overcomes the air pressure provided by the first linear driver 2111 through the extrusion force to compress the push rod 2112 on the clamp 22, until the primary clamp block 221 abuts against the outer shell of the first linear driver 2111, at this time, the primary clamp block 221 is fixed by the first locking assembly 31, and the linear driving assembly 23 no longer drives the mounting seat 211 to move, so that the relative distance between the primary clamp block 221 and the workpiece 4 is unchanged. At this time, the push rod 2112 which is movably connected with the secondary clamp block 222 is in the extended state under the action of the air pressure provided by the first linear driver 2111, and the secondary clamp block 222 abuts against the workpiece 4 under the action of the pushing force provided by the push rod 2112. After the primary clamp block 221 is fixed by the first locking assembly 31, the secondary clamp block 222 is fixed by the second locking assembly 32, so that the workpiece 4 is in a relatively fixed state between the workpiece 4 and the plurality of clamp blocks during the machining process, and the workpiece 4 is prevented from being deviated.

[0039] With reference to Figure 5 And Figure 7 The first locking assembly 31 comprises a first clamping block 311 and a first elastic member 312; the first clamping block 311 is slidably installed on the mounting seat 211; the two ends of the first elastic member 312 are connected with the first clamping block 311 and the mounting seat 211 respectively; the bottom end of the primary clamp block 221 is provided with a first clamping groove 2211 matched with the first clamping block 311; when the first clamping block 311 is clamped with the first clamping groove 2211, the movement of the primary clamp block 221 is limited.

[0040] The first clamping block 311, the first elastic member 312 and the first clamping groove 2211 realize the function of fixing the main clamping block 221, and the positions of the first clamping groove 2211 and the first clamping block 311 are set so that the main clamping block 221 is automatically fixed when the main clamping block 221 abuts against the outer shell of the first linear driver 2111. The side of the first clamping block 311 away from the first linear driver 2111 is provided with a slope; after the main clamping block 221 contacts the workpiece 4, the main clamping block 221 is extruded by the workpiece 4, and then the extrusion force overcomes the air pressure provided by the first linear driver 2111 to compress the push rod 2112 on the clamp 22; the main clamping block 221 continuously approaches the outer shell of the first linear driver 2111, and when the main clamping block 221 contacts the first clamping groove 2211, the slope of the first clamping block 311 is extruded, thereby pushing the first clamping block 311; the first elastic member 312 is contracted under the action of the pushing force, so that the main clamping block 221 moves smoothly, until the main clamping block 221 abuts against the outer shell of the first linear driver 2111, the first clamping block 311 is aligned with the first clamping groove 2211 at the bottom of the main clamping block 221, and the first clamping block 311 is clamped with the first clamping groove 2211 under the elastic force of the first elastic member 312, so as to fix the main clamping block 221 on the mounting seat 211.

[0041] With reference to Figure 5 And Figure 6 The second locking assembly 32 includes a second clamping block 321 and a second elastic member 322; the second clamping block 321 is slidingly installed on the auxiliary clamping block 222; the two ends of the second elastic member 322 are connected with the auxiliary clamping block 222 and the second clamping block 321 respectively; the mounting seat 211 is provided with a second clamping groove 2113 matched with the second clamping block 321, and the second clamping groove 2113 is provided with at least three, and the plurality of second clamping grooves 2113 are equidistantly distributed.

[0042] The second clamping block 321, the second elastic member 322 and the second clamping groove 2113 realize the function of fixing the auxiliary clamping block 222. In the process of fixing the workpiece 4, the push rod 2112 movably connected with the auxiliary clamping block 222 is in an extended state under the action of the air pressure provided by the first linear driver 2111, and the auxiliary clamping block 222 abuts against the workpiece 4 under the action of the pushing force provided by the push rod 2112. After the first locking assembly 31 fixes the main clamping block 221, in the process of fixing the workpiece 4, the rubber layer 2221 on the auxiliary clamping block 222 has a certain deformation performance, and the push rod 2112 that pushes the auxiliary clamping block 222 is pushed by the air pressure, and the pushing force provided by the push rod 2112 is similar to the elastic force provided by the gas spring. The workpiece 4 will vibrate in the process of being pushed by the main clamping block 221. The second clamping block 321 is a cylindrical clamping block, and the volume is small. A plurality of second clamping grooves 2113 are formed in the mounting seat 211. When the second clamping block 321 is aligned with the second clamping groove 2113 in the process of slight swinging, the second clamping block 321 is clamped with the second clamping groove 2113 under the action of the elastic force of the second elastic member 322, thereby fixing the auxiliary clamping block 222. The workpiece 4 is in a relatively fixed state between the plurality of clamping blocks in the process of machining, so that the workpiece 4 is prevented from deviating.

[0043] With reference to Figure 5 , Figure 7 and Figure 8 : The control assembly 33 comprises a push plate 331 and an extension block 332. The mounting seat 211 is provided with a second linear driver 34 for driving the push plate 331. The push plate 331 is located above the extension block 332. The extension block 332 is connected with the first clamping block 311.

[0044] The push plate 331, the extension block 332 and the second linear driver 34 realize the function of removing the movement restriction of the first locking assembly 31 on the main clamping block 221. The second linear driver 34 is preferably a linear air cylinder. The processing table 1 is provided with a controller for human-computer interaction. The second linear driver 34 is electrically connected with the controller. After the machining is completed, the operator sends a signal to the second linear driver 34 through the controller. After receiving the signal, the second linear driver 34 drives the push plate 331 to move downward. After the push plate 331 contacts with the extension block 332, the extension block 332 is pushed. The extension block 332 transmits the pushing force to the first clamping block 311. Through the pushing force, the first clamping block 311 moves away from the first clamping groove 2211 against the elastic force of the first elastic member 312, until the first clamping block 311 is separated from the first clamping groove 2211, thereby removing the movement restriction of the first locking assembly 31 on the main clamping block 221.

[0045] With reference to Figure 5 and Figure 8The support 333 is movably arranged on the mounting base 211, and the filling block 3331 for cooperating with the second clamping groove 2113 is arranged on the support 333; and the first transmission assembly 35 is arranged on the mounting base 211, and the support 333 is in transmission connection with the first clamping block 311 through the first transmission assembly 35.

[0046] The support 333, the filling block 3331 and the first transmission assembly 35 are used to remove the movement limitation of the second locking assembly 32 on the auxiliary clamping block 222. In the process of fixing the workpiece 4, in order to avoid that the auxiliary clamping block 222 is limited in rotation by the second clamping block 321 and the first second clamping groove 2113 in the movement process. When the first clamping block 311 is pressed down, the support 333 is controlled to move up through the first transmission assembly 35, and then the second clamping groove 2113 is filled through the filling block 3331 on the support 333, so that the auxiliary clamping block 222 is avoided to be limited in the position adjustment process by the second locking assembly 32. Until the main clamping block 221 is fixed by the first locking assembly 31, the auxiliary clamping block 222 also completes the abutment with the workpiece 4, and then the auxiliary clamping block 222 is fixed by the second locking assembly 32. After the machining is completed, the operator removes the movement limitation of the first locking assembly 31 on the main clamping block 221 through the driving of the second linear driver 34, and when the first clamping block 311 moves down, the movement limitation of the auxiliary clamping block 222 by the second locking assembly 32 is removed.

[0047] Referring to Figure 8 and Figure 9 The bottom of the support 333 is provided with the guide rod 3332 which is in sliding cooperation with the mounting base 211; the first transmission assembly 35 comprises the bracket 351 and the transmission rod 352; the bracket 351 is connected with the mounting base 211, and the transmission rod 352 is rotationally arranged on the bracket 351, and the two ends of the transmission rod 352 are respectively hinged with the support 333 and the first clamping block 311.

[0048] The guide rod 3332, the bracket 351 and the transmission rod 352 are used to control the corresponding movement of the support 333 when the first clamping block 311 moves. When the first clamping block 311 moves down, the transmission rod 352 is rotated, so that the other end of the transmission rod 352 is lifted, and then the support 333 is driven to move up through the transmission rod 352, and then the second clamping block 321 is pushed out of the second clamping groove 2113 through the filling block 3331 on the support 333.

[0049] Referring to Figure 2 、 Figure 10 and Figure 11The linear driving assembly 23 comprises a screw rod 231 and a rotary driver 232; the screw rod 231 is provided with at least two and corresponds to the mounting seat 211 one by one, the screw rod 231 is rotationally arranged on the workbench, and the screw rod 231 is threadedly connected with the mounting seat 211; the rotary driver 232 is arranged on the workbench, and the rotary driver 232 is used for driving one of the screw rods 231 to rotate; the second transmission assembly 24 is arranged on the workbench 1, and the plurality of screw rods 231 are drivingly connected through the second transmission assembly 24.

[0050] The screw rod 231, the rotary driver 232 and the second transmission assembly 24 are used for realizing the function of controlling the synchronous movement of the plurality of mounting seats 211 along the guide rail 21.

[0051] With reference to Figure 2 , Figure 10 and Figure 11 : the second transmission assembly 24 comprises a gear ring 241, a rotating shaft 242, a rotary gear 243 and a bevel gear 244; the gear ring 241 and the rotating shaft 242 are rotationally arranged on the workbench 1, and the axis line of the gear ring 241 is collinear with the axis line of the workbench 2; the rotary gear 243 is sleeved on the rotating shaft 242, and the rotary gear 243 is in meshing connection with the gear ring 241; the bevel gear 244 is provided with two, and the two bevel gears 244 are sleeved on the rotating shaft 242 and the screw rod 231 respectively, and the two bevel gears 244 are in meshing connection.

[0052] The gear ring 241, the rotating shaft 242 and the rotary gear 243 are used for realizing the function of controlling the synchronous rotation of the plurality of screw rods 231. The driving end of the rotary driver 232 is in transmission connection with one of the rotating shafts 242. When the rotating shaft 242 is driven to rotate by the rotary driver 232, the rotating shaft 242 drives the rotary gear 243 to rotate, the rotary gear 243 drives the gear ring 241 in meshing connection to rotate, the gear ring 241 drives the remaining rotary gears 243 to rotate, thereby controlling the synchronous rotation of the plurality of rotating shafts 242, and the rotating shaft 242 drives the screw rod 231 to rotate through the bevel gear 244, thereby controlling the synchronous rotation of the plurality of screw rods 231.

[0053] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A precision positioning jig for machining of hardware, characterized by, It includes processing table (1), storage tray (2) and auxiliary control mechanism (3); The storage tray (2) is rotatably arranged on the processing table (1), and at least three guide rails (21) are formed in the storage tray (2); a mounting seat (211) is slidably arranged on each guide rail (21); a first linear actuator (2111) and a push rod (2112) are arranged on the mounting seat (211); the first linear actuator (2111) is used for driving the push rod (2112) to extend or retract; A clamp (22) for fixing a workpiece (4) is arranged on the mounting seat (211); the clamp (22) comprises a main clamping block (221) and a sub clamping block (222); the sub clamping block (222) is hingedly connected with the main clamping block (221); a rubber layer (2221) is arranged on a side of the sub clamping block (222) away from the mounting seat (211); At least two push rods (2112) are arranged on the mounting seat (211); one of the push rods (2112) is connected with the main clamping block (221), and the other push rod (2112) is movably hingedly connected with the sub clamping block (222); A linear driving assembly (23) for driving the mounting seat (211) to move along the guide rail (21) is arranged on the storage tray (2); When the main clamping block (221) abuts against the workpiece (4), the rubber layer (2221) of the sub clamping block (222) abuts against the workpiece (4) under the pushing action of the push rod (2112); An auxiliary control mechanism (3) for fixing the clamp (22) is arranged on the mounting seat (211); the auxiliary control mechanism (3) comprises a first locking assembly (31), a second locking assembly (32) and a control assembly (33); The first locking assembly (31) is used for fixing the main clamping block (221); The second locking assembly (32) is used for fixing the sub clamping block (222); The control assembly (33) is used for controlling the opening and closing of the first locking assembly (31) and the second locking assembly (32); In the working state, when the main clamping block (221) abuts against the workpiece (4) and the first linear actuator (2111) on both sides, the first locking assembly (31) limits the movement of the main clamping block (221); when the sub clamping block (222) abuts against the surface of the workpiece (4) and the first locking assembly (31) fixes the main clamping block (221), the second locking assembly (32) fixes the sub clamping block (222); The first locking assembly (31) comprises a first clamping block (311) and a first elastic member (312); The first clamping block (311) is slidably arranged on the mounting seat (211); The two ends of the first elastic member (312) are connected with the first clamping block (311) and the mounting seat (211) respectively; A first clamping groove (2211) matched with the first clamping block (311) is formed in the bottom end of the main clamping block (221); When the first clamping block (311) is clamped with the first clamping groove (2211), the movement of the main clamping block (221) is limited; The second locking assembly (32) comprises a second clamping block (321) and a second elastic member (322); The second clamping block (321) is slidably arranged on the sub clamping block (222); The two ends of the second elastic member (322) are connected with the sub clamping block (222) and the second clamping block (321) respectively; The second clamping groove (2113) is arranged on the mounting seat (211) and matched with the second clamping block (321), and at least three second clamping grooves (2113) are arranged.

2. The precision positioning jig for machining of hardware according to claim 1, wherein Each mounting seat (211) is provided with two groups of clamps (22), and the two groups of clamps (22) are distributed on both sides of the first linear driver (2111) along the radial direction of the object disc (2).

3. The precision positioning jig for machining of hardware according to claim 1, wherein The control assembly (33) comprises a push plate (331) and an extension block (332). The mounting seat (211) is provided with a second linear driver (34) for driving the push plate (331). The push plate (331) is located above the extension block (332). The extension block (332) is connected with the first clamping block (311).

4. The precision positioning jig for machining of hardware according to claim 3, wherein The mounting seat (211) is movably provided with a support (333), and the support (333) is provided with a filling block (3331) matched with the second clamping groove (2113). The mounting seat (211) is provided with a first transmission assembly (35), and the support (333) is in transmission connection with the first clamping block (311) through the first transmission assembly (35).

5. The precision positioning jig for machining of hardware according to claim 4, wherein The bottom of the support (333) is provided with a guide rod (3332) in sliding connection with the mounting seat (211). The first transmission assembly (35) comprises a bracket (351) and a transmission rod (352). The bracket (351) is connected with the mounting seat (211), the transmission rod (352) is rotatably arranged on the bracket (351), and the two ends of the transmission rod (352) are hingedly connected with the support (333) and the first clamping block (311) respectively.

6. The precision positioning jig for machining of hardware according to claim 1, wherein The linear driving assembly (23) comprises a screw rod (231) and a rotary driver (232). The screw rod (231) is in one-to-one correspondence with the mounting seat (211), and the screw rod (231) is rotatably arranged on the object table and in threaded connection with the mounting seat (211). The rotary driver (232) is arranged on the object table and is used for driving one of the screw rods (231) to rotate. The second transmission assembly (24) is arranged on the machining table (1) and in transmission connection with the plurality of screw rods (231).

7. The precision positioning jig for machining of hardware according to claim 6, wherein The second transmission assembly (24) comprises a gear ring (241), a rotating shaft (242), a rotary gear (243) and a bevel gear (244). The gear ring (241) and the rotating shaft (242) are rotatably arranged on the machining table (1), and the axis of the gear ring (241) is collinear with the axis of the object disc (2). The rotary gear (243) is sleeved on the rotating shaft (242), and the rotary gear (243) is in meshing connection with the gear ring (241). The bevel gear (244) is provided with two, and the two bevel gears (244) are sleeved on the rotating shaft (242) and the screw rod (231) respectively and in meshing connection.

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