Precise positioning jig for hardware machining

Abstract

The invention relates to the technical field of hardware machining, in particular to a precise positioning jig for hardware machining, which comprises a machining table, a storage tray and an auxiliary control mechanism. The storage disc is rotationally arranged on the machining table, at least three guide rails are arranged on the storage disc, a mounting seat is slidably mounted on each guide rail, a first linear driver and a push rod are arranged on each mounting seat, and the first linear drivers are used for driving the push rods to stretch out and draw back; a clamp used for fixing a workpiece is arranged on the mounting base and comprises a main clamping block and an auxiliary clamping block, the auxiliary clamping block is hinged to the main clamping block, and a rubber layer is arranged on the side, away from the mounting base, of the auxiliary clamping block; and a linear driving assembly is arranged on the storage disc. The multiple sets of deformable clamps are attached to the surface of the workpiece, the position of the workpiece is stabilized in the machining process, the precise positioning function is achieved, and the problems that the workpiece deflects under the vibration effect in the machining process, and the machining precision of the workpiece is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of hardware processing, and in particular to a precision positioning fixture used for hardware mechanical processing. Background Art

[0002] Hardware usually needs to achieve high processing accuracy. If the workpiece cannot be stably fixed during processing, it may move or vibrate, resulting in processing errors and affecting product quality and performance. Since the shape of hardware is not fixed, special fixtures are usually required for fixing during processing. As a result, when processing different types of workpieces, the fixtures need to be replaced repeatedly, which is extremely cumbersome and affects processing efficiency.

[0003] To this end, Chinese patent CN220241250U discloses a positioning fixture for precision hardware processing, which is conducive to achieving the effect of installing and fixing the fixed plate by setting grooves and screw holes. According to different requirements of hardware processing, the fixed plate is placed on the processing device, and the screws are threadedly installed on the processing device through the screw holes, and the nut at the upper end of the screw is located in the groove, which is conducive to protecting the nut.

[0004] However, when processing hardware, especially drilling, the workpiece will be affected by vibration, which may cause the workpiece to shift on the fixture, thereby affecting the processing accuracy of the workpiece. Summary of the invention

[0005] In view of the above problems, a precision positioning fixture for hardware machining is provided, which solves the problem of workpiece deflection caused by vibration during machining and affecting the machining accuracy of the workpiece by using multiple sets of deformable clamps for fixing the workpiece.

[0006] In order to solve the problems of the prior art, the present invention provides a precision positioning fixture for mechanical processing of hardware, comprising a processing table, a storage tray and an auxiliary control mechanism; the storage tray is rotatably arranged on the processing table, and at least three guide rails are provided on the storage tray, and a mounting seat is slidably installed on each guide rail, and a first linear drive and a push rod are provided on the mounting seat, and the first linear drive is used to drive the push rod to extend and retract; a clamp for fixing a workpiece is provided on the mounting seat, and the clamp comprises a main clamp block and a secondary clamp block, the secondary clamp block is hinged to the main clamp block, and a rubber layer is provided on the side of the secondary clamp block away from the mounting seat; at least two push rods are provided on the mounting seat, one of which is connected to the main clamp block, and the other is movably hinged to the secondary clamp block; a linear drive component for driving the mounting seat to move along the guide rail is provided on the storage tray; when the main clamp block abuts against the workpiece, the rubber layer of the secondary clamp block abuts against the workpiece under the pushing action of the push rod.

[0007] Preferably, two groups of clamps are provided on each mounting seat, and the two groups of clamps are distributed on both sides of the first linear drive along the radial direction of the storage plate.

[0008] Preferably, an auxiliary control mechanism for fixing the clamp is provided on the mounting seat, and the auxiliary control mechanism includes a first locking assembly, a second locking assembly and a control assembly; the first locking assembly is used to fix the main clamping block; the second locking assembly is used to fix the auxiliary clamping block; the control assembly is used to control 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 clamping block are respectively abutted against the workpiece and the first linear drive, the first locking assembly restricts the movement of the main clamping block; when the auxiliary clamping block is abutted against the surface of the workpiece and the first locking assembly fixes the main clamping block, the second locking assembly fixes the auxiliary clamping block.

[0009] Preferably, the first locking assembly includes a first clamping block and a first elastic member; the first clamping block is slidably mounted on the mounting seat; the two ends of the first elastic member are respectively connected to the first clamping block and the mounting seat; a first clamping groove cooperating with the first clamping block is provided at the bottom end of the main clamping block; when the first clamping block is engaged with the first clamping groove, the movement of the main clamping block is restricted.

[0010] Preferably, the second locking assembly includes a second clamping block and a second elastic member; the second clamping block is slidably mounted on the auxiliary clamping block; the two ends of the second elastic member are respectively connected to the auxiliary clamping block and the second clamping block; a second clamping slot cooperating with the second clamping block is provided on the mounting seat, and at least three second clamping slots are provided, and the multiple second clamping slots are equidistantly distributed.

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

[0012] Preferably, a support is movably provided on the mounting seat, and a filling block for cooperating with the second slot is provided on the support; and a first transmission assembly is provided on the mounting seat, and the support is transmission-connected to the first block via the first transmission assembly.

[0013] Preferably, a guide rod is provided at the bottom of the support, and the guide rod is slidably matched with the mounting seat; the first transmission assembly includes a bracket and a transmission rod; the bracket is connected to the mounting seat, the transmission rod is rotatably set on the bracket, and the two ends of the transmission rod are respectively hinged to the support and the first block.

[0014] Preferably, the linear drive assembly includes a screw and a rotary driver; at least two screws are provided and correspond one to one with the mounting seats, the screws are rotatably arranged on the storage table, and the screws are threadedly connected to the mounting seat; the rotary driver is arranged on the storage table, and the rotary driver is used to drive one of the screws to rotate; a second transmission assembly is provided on the processing table, and a plurality of screws are connected in transmission via the second transmission assembly.

[0015] Preferably, the second transmission assembly includes a gear ring, a rotating shaft, a rotating gear and a bevel gear; the gear ring and the rotating shaft are both rotatably arranged on the processing table, and the axis of the gear ring is colinear with the axis of the storage plate; the rotating gear is sleeved on the rotating shaft, and the rotating gears are meshingly connected with the gear ring; there are two bevel gears, and the two bevel gears are respectively sleeved on the rotating shaft and the screw, and the two bevel gears are meshingly connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses multiple groups of deformable clamps to fit the surface of the workpiece, stabilize the position of the workpiece during the processing, realize the precise positioning function, and thus improve the processing accuracy of the workpiece. During the processing, the linear drive assembly controls multiple mounting seats to move in the direction close to the axis of the storage plate until the main clamping blocks on the multiple mounting seats are all in contact with the surface of the workpiece. At this time, the auxiliary clamping blocks are in contact with the workpiece under the thrust provided by the push rod, and then the position of the workpiece is stabilized by the auxiliary clamping blocks on both sides of the main clamping blocks, avoiding relative sliding between the workpiece and the main clamping blocks, thereby solving the problem that the workpiece is deflected due to vibration during the processing, which affects the processing accuracy of the workpiece.

[0018] 2. The present invention provides a group of clamps on both sides of the mounting seat, which can not only clamp the workpiece from the outside of the workpiece, but also support and fix the workpiece from the inside of the workpiece, thereby improving the adaptability of the clamp. This dual-action mechanism enhances the adaptability of the clamp to various shapes and sizes of workpieces. Whether it is for workpieces with regular or irregular shapes, accurate and stable fixation can be achieved, ensuring that the workpiece will not be displaced or deformed due to the application of external force during the processing, effectively improving the processing accuracy and efficiency.

[0019] 3. The present invention realizes the function of fixing the fixture through the first locking assembly, the second locking assembly and the control assembly, thereby preventing the workpiece from being pushed by the auxiliary clamping block due to external force during the processing, and further improving the positioning accuracy of the workpiece during the processing. After the first locking assembly fixes the main clamping block, the second locking assembly fixes the auxiliary clamping block, so that the workpiece and the multiple clamping blocks are in a relatively fixed state during the processing, thereby preventing the workpiece from being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a precision positioning fixture used in hardware machining.

[0021] Figure 2 It is a three-dimensional schematic diagram of a precision positioning fixture used in hardware machining when fixing a workpiece on a storage tray.

[0022] Figure 3The invention is a three-dimensional schematic diagram of a mounting seat and a clamp in a precision positioning fixture used for machining hardware parts when the clamp is in a fixed state.

[0023] Figure 4 It is a three-dimensional exploded schematic diagram of a mounting seat and a clamp in a precision positioning fixture used in hardware machining.

[0024] Figure 5 It is a three-dimensional exploded schematic diagram of a single-side clamp in a precision positioning fixture used in hardware machining.

[0025] Figure 6 yes Figure 5 A local enlarged schematic diagram of point A in the middle.

[0026] Figure 7 It is a three-dimensional exploded schematic diagram of a clamp and auxiliary control mechanism in a precision positioning fixture used in hardware machining.

[0027] Figure 8 It is a three-dimensional exploded schematic diagram of an auxiliary control mechanism in a precision positioning fixture used in hardware machining.

[0028] Fig. 9 The invention is a three-dimensional schematic diagram of a first clamping block, a support and a first transmission component in a precision positioning fixture used for machining hardware parts.

[0029] Fig.10 The present invention is a three-dimensional schematic diagram of a storage tray, a clamp, a linear drive assembly and a second transmission assembly in a precision positioning fixture used for machining hardware parts.

[0030] Fig.11 yes Fig.10 A local enlarged schematic diagram of point B in the middle.

[0031] The numbers in the figure are: 1-processing table; 2-placing plate; 21-guide rail; 211-mounting seat; 2111-first linear drive; 2112-push rod; 2113-second slot; 22-clamp; 221-main clamping block; 2211-first slot; 222-secondary clamping block; 2221-rubber layer; 23-linear drive assembly; 231-screw; 232-rotation drive; 24-second transmission assembly; 241-gear ring; 242-rotating shaft; 243-rotating 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, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1-Figure 4 A precision positioning fixture for mechanical processing of hardware, comprising a processing table 1, a storage tray 2 and an auxiliary control mechanism 3; the storage tray 2 is rotatably arranged on the processing table 1, and at least three guide rails 21 are provided on the storage tray 2, and a mounting seat 211 is slidably installed on each guide rail 21, and a first linear driver 2111 and a push rod 2112 are provided on the mounting seat 211, and the first linear driver 2111 is used to drive the push rod 2112 to extend and retract; a clamp 22 for fixing a workpiece 4 is provided on the mounting seat 211, and the clamp 22 includes a main clamp block 221 and a secondary clamp block 222, The auxiliary clamp 222 is hinged to the main clamp 221, and a rubber layer 2221 is provided on the side of the auxiliary clamp 222 away from the mounting seat 211; at least two push rods 2112 are provided on the mounting seat 211, one of which is connected to the main clamp 221, and the other is movably hinged to the auxiliary clamp 222; a linear drive assembly 23 is provided on the storage tray 2 for driving the mounting seat 211 to move along the guide rail 21; when the main clamp 221 abuts against the workpiece 4, the rubber layer 2221 of the auxiliary clamp 222 abuts against the workpiece 4 under the pushing action of the push rod 2112.

[0034] The present invention uses multiple groups of deformable clamps 22 to fit the surface of the workpiece 4, stabilize the position of the workpiece 4 during the processing, realize the precision positioning function, and thus improve the processing accuracy of the workpiece 4. During the processing, the linear drive assembly 23 controls multiple mounting seats 211 to move in the direction close to the axis of the storage tray 2 until the main clamping blocks 221 on the multiple mounting seats 211 are all in contact with the surface of the workpiece 4. At this time, the auxiliary clamping blocks 222 are in contact with the workpiece 4 under the thrust provided by the push rod 2112, and then the auxiliary clamping blocks 222 on both sides of the main clamping blocks 221 stabilize the position of the workpiece 4, avoid relative sliding between the workpiece 4 and the main clamping blocks 221, and solve the problem that the workpiece 4 is deflected by vibration during the processing, which affects the processing accuracy of the workpiece 4. The first linear drive 2111 is preferably a cylinder with multiple driving ends, and the multiple push rods 2112 are synchronously extended and retracted under the air source pressure of the first linear drive 2111. During processing, the operator first places the workpiece 4 on the placement tray 2, and then drives multiple mounting seats 211 to move simultaneously toward the axial direction of the placement tray 2 through the linear drive assembly 23, until the main clamping blocks 221 on multiple mounting seats 211 are in contact with the surface of the workpiece 4. At the same time, the main clamping blocks 221 and the auxiliary clamping blocks 222 are squeezed by the workpiece 4, and the squeezing force overcomes the air pressure of the first linear drive 2111 to push the push rods 2112 on the main clamping blocks 221 and the auxiliary clamping blocks 222 to contract until the main clamping blocks 221 are in contact with the outer surface of the first linear drive 2111, and the auxiliary clamping blocks 222 are in an inclined state under the push of the push rods 2112, and the rubber layer 2221 on the auxiliary clamping blocks 222 fits the surface of the workpiece 4, and the workpiece 4 is stably supported by the cooperation of multiple sets of clamps 22 to avoid the workpiece 4 from being offset during the processing and to ensure the processing accuracy of the workpiece 4.

[0035] Reference Figure 3 and Figure 4 : Two sets of clamps 22 are provided on each mounting seat 211, and the two sets of clamps 22 are distributed on both sides of the first linear drive 2111 along the radial direction of the placement plate 2.

[0036] The present invention arranges a group of clamps 22 on both sides of the mounting seat 211, which can not only clamp the workpiece 4 from the outside of the workpiece 4, but also support and fix the workpiece 4 from the inside of the workpiece 4, thereby improving the adaptability of the clamp 22. This dual-action mechanism enhances the adaptability of the clamp 22 to various shapes and sizes of workpieces 4, and can achieve accurate and stable fixation for workpieces 4 of regular or irregular shapes, ensuring that the workpiece 4 will not be displaced or deformed due to the application of external force during the processing, thereby effectively improving the processing accuracy and efficiency. When processing a 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 storage tray 2, and then the workpiece 4 is placed on the storage tray 2, and then the clamp 22 is controlled by the linear drive assembly 23 to move along the guide rail 21 toward the outer side of the storage tray 2, and the workpiece 4 is supported and fixed by abutting against the inner ring of the workpiece 4 by multiple groups of clamps 22. 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 increasing the force between the clamp 22 and the workpiece 4 and improving the stability of the workpiece 4. This double-sided fixture 22 design can be quickly adjusted and replaced according to the needs of the specific workpiece 4 without the need for a complicated reassembly process, which significantly improves the flexibility and operating efficiency of the production line.

[0037] Reference Figure 4 and Figure 5 : An auxiliary control mechanism 3 for fixing the clamp 22 is provided on the mounting seat 211, and the auxiliary control mechanism 3 includes a first locking component 31, a second locking component 32 and a control component 33; the first locking component 31 is used to fix the main clamp 221; the second locking component 32 is used to fix the auxiliary clamp 222; the control component 33 is used to control the opening and closing of the first locking component 31 and the second locking component 32; in the working state, when the two sides of the main clamp 221 are respectively in contact with the workpiece 4 and the first linear drive 2111, the first locking component 31 limits the movement of the main clamp 221; when the auxiliary clamp 222 is in contact with the surface of the workpiece 4 and the first locking component 31 fixes the main clamp 221, the second locking component 32 fixes the auxiliary clamp 222.

[0038] The present invention realizes the function of fixing the fixture 22 through the first locking assembly 31, the second locking assembly 32 and the control assembly 33, so as to prevent the workpiece 4 from being pushed by the auxiliary clamping block 222 due to the external force during the processing, and further improve the positioning accuracy of the workpiece 4 during the processing. During the positioning process of the workpiece 4, when the main clamping block 221 contacts the workpiece 4, it is squeezed by the workpiece 4, and then overcomes the air pressure provided by the first linear drive 2111 through the squeezing force, compressing the push rod 2112 on the fixture 22 until the main clamping block 221 abuts against the outer shell of the first linear drive 2111. At this time, the main clamping block 221 is fixed by the first locking assembly 31, and the linear drive assembly 23 no longer drives the mounting seat 211 to move, so that the relative distance between the main clamping block 221 and the workpiece 4 remains unchanged. At this time, the push rod 2112 movably hinged to the auxiliary clamp 222 is in an extended state under the action of the air pressure force provided by the first linear drive 2111, and the auxiliary clamp 222 abuts against the workpiece 4 under the action of the thrust provided by the push rod 2112. After the first locking assembly 31 fixes the main clamp 221, the second locking assembly 32 fixes the auxiliary clamp 222, so that the workpiece 4 and multiple clamps are in a relatively fixed state during the processing, thereby avoiding the deviation of the workpiece 4.

[0039] Reference Figure 5 and Figure 7 The first locking assembly 31 includes a first clamping block 311 and a first elastic member 312; the first clamping block 311 is slidably mounted on the mounting seat 211; the two ends of the first elastic member 312 are respectively connected to the first clamping block 311 and the mounting seat 211; the bottom end of the main clamping block 221 is provided with a first clamping groove 2211 that cooperates with the first clamping block 311; when the first clamping block 311 is engaged with the first clamping groove 2211, the movement of the main clamping block 221 is limited.

[0040] The present invention realizes the function of fixing the main clamping block 221 through the first clamping block 311, the first elastic member 312 and the first clamping groove 2211, and by setting the position of the first clamping groove 2211 and the first clamping block 311, the main clamping block 221 is automatically fixed when it abuts against the outer shell of the first linear drive 2111. The first clamping block 311 is provided with an inclined surface on one side away from the first linear drive 2111; after the main clamping block 221 contacts with the workpiece 4, it is squeezed by the workpiece 4, and then the extrusion force overcomes the air pressure provided by the first linear drive 2111, compressing the push rod 2112 on the clamp 22, and the main clamping block 221 continuously approaches the outer shell of the first linear drive 2111. When the main clamping block 221 contacts with the first clamping groove 2211, the inclined surface of the first clamping block 311 is squeezed, thereby pushing the first clamping block 311, and the first elastic member 312 contracts under the action of the thrust, so that the main clamping block 221 moves smoothly. Until the main clamping block 221 abuts against the outer shell of the first linear drive 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, fixing the main clamping block 221 on the mounting seat 211.

[0041] Reference 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 slidably installed on the auxiliary clamping block 222; the two ends of the second elastic member 322 are respectively connected to the auxiliary clamping block 222 and the second clamping block 321; the mounting seat 211 is provided with a second clamping groove 2113 that cooperates with the second clamping block 321, and there are at least three second clamping grooves 2113, and the multiple second clamping grooves 2113 are equidistantly distributed.

[0042] The present invention realizes the function of fixing the auxiliary clamp block 222 through the second clamp block 321, the second elastic member 322 and the second clamping groove 2113. In the process of fixing the workpiece 4, the push rod 2112 movably hinged to the auxiliary clamp block 222 is in an extended state under the air pressure force provided by the first linear drive 2111, and the auxiliary clamp block 222 abuts against the workpiece 4 under the thrust 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, since 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 gas pressure, the thrust provided by it is similar to the elastic force provided by the gas spring, and the workpiece 4 will generate a certain vibration in the process of being pushed by the main clamping block 221, and the second clamping block 321 on the auxiliary clamping block 222 is a cylindrical clamping block with a small volume, and a plurality of second clamping grooves 2113 are provided on the mounting seat 211. When the auxiliary clamping block 222 is slightly swung, when the second clamping block 321 is aligned with the second clamping groove 2113, the second clamping block 321 is engaged with the second clamping groove 2113 under the elastic force of the second elastic member 322, thereby fixing the auxiliary clamping block 222, so that the workpiece 4 and the multiple clamping blocks are in a relatively fixed state during the processing, thereby avoiding the workpiece 4 from being offset.

[0043] Reference Figure 5 , Figure 7 and Figure 8 : The control component 33 includes a push plate 331 and an extension block 332; a second linear driver 34 for driving the push plate 331 is provided on the mounting seat 211; the push plate 331 is located above the extension block 332; the extension block 332 is connected to the first card block 311.

[0044] The present invention realizes the function of releasing the movement restriction of the main clamping block 221 by the first locking assembly 31 through the push plate 331, the extension block 332 and the second linear driver 34. The second linear driver 34 is preferably a linear cylinder. A controller for human-machine interaction is provided on the processing table 1, and the second linear driver 34 is electrically connected to the controller. After the processing 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 the extension block 332, it pushes the extension block 332. And the extension block 332 transmits the thrust to the first clamping block 311, and the thrust overcomes the elastic force of the first elastic member 312 to drive the first clamping block 311 to move in a direction away from the first clamping slot 2211, until the first clamping block 311 is separated from the first clamping slot 2211, and the movement restriction of the main clamping block 221 by the first locking assembly 31 is released.

[0045] Reference Figure 5 and Figure 8: A support 333 is movably arranged on the mounting seat 211, and a filling block 3331 for cooperating with the second slot 2113 is arranged on the support 333; and a first transmission assembly 35 is arranged on the mounting seat 211, and the support 333 is transmission-connected to the first block 311 through the first transmission assembly 35.

[0046] The present invention realizes the function of releasing the movement restriction of the secondary clamping block 222 by the second locking assembly 32 through the support 333, the filling block 3331 and the first transmission assembly 35. In the process of fixing the workpiece 4, in order to prevent the secondary clamping block 222 from moving, the second clamping block 321 is plugged and matched with the first second clamping groove 2113 to restrict the rotation of the secondary clamping block 222. When the first clamping block 311 is pressed down, the support 333 is controlled to move up by the first transmission assembly 35, and then the second clamping groove 2113 is filled by the filling block 3331 on the support 333, so as to prevent the secondary clamping block 222 from being restricted by the second locking assembly 32 during the position adjustment process. Until the first locking assembly 31 fixes the main clamping block 221, the secondary clamping block 222 also completes the contact with the workpiece 4, and then the secondary clamping block 222 is fixed by the second locking assembly 32. After the processing is completed, the operator first releases the movement restriction of the main clamping block 221 by the first locking assembly 31 by driving the second linear drive 34, and when the first clamping block 311 moves downward, the movement restriction of the additional block 222 by the second locking assembly 32 is released.

[0047] Reference Figure 8 and Fig. 9 : A guide rod 3332 is provided at the bottom of the support 333, and the guide rod 3332 is slidably matched with the mounting seat 211; the first transmission assembly 35 includes a bracket 351 and a transmission rod 352; the bracket 351 is connected to the mounting seat 211, the transmission rod 352 is rotatably set on the bracket 351, and the two ends of the transmission rod 352 are respectively hinged to the support 333 and the first block 311.

[0048] The present invention realizes the function of controlling the corresponding movement of the support 333 when the first block 311 moves through the guide rod 3332, the bracket 351 and the transmission rod 352. When the first block 311 moves downward, it pushes the transmission rod 352 to rotate, so that the other end of the transmission rod 352 is tilted, and then the support 333 is driven to move upward through the transmission rod 352, and then the second block 321 is pushed out of the second slot 2113 through the filling block 3331 on the support 333.

[0049] Reference Figure 2 , Fig.10 and Fig.11: The linear drive assembly 23 includes a screw 231 and a rotary driver 232; there are at least two screws 231 and they correspond one to one with the mounting seat 211, the screw 231 is rotatably set on the storage table, and the screw 231 is threadedly connected to the mounting seat 211; the rotary driver 232 is set on the storage table, and the rotary driver 232 is used to drive one of the screws 231 to rotate; a second transmission assembly 24 is provided on the processing table 1, and multiple screws 231 are transmission connected through the second transmission assembly 24.

[0050] The present invention realizes the function of controlling multiple mounting seats 211 to move synchronously along the guide rail 21 through the screw 231, the rotary driver 232 and the second transmission assembly 24. The rotary driver 232 is preferably a servo motor, and the rotary driver 232 is electrically connected to the controller; after the workpiece 4 is placed on the storage tray 2, the controller sends a signal to the rotary driver 232, and the rotary driver 232 drives the screw 231 to rotate after receiving the signal, and the screw 231 drives the remaining screws 231 to rotate synchronously through the second transmission assembly 24, and then drives the corresponding mounting seats 211 to move along the guide rail 21 through multiple screws 231, and the mounting seats 211 drive the clamp 22 to move, and fix the workpiece 4.

[0051] Reference Figure 2 , Fig.10 and Fig.11 The second transmission assembly 24 includes a gear ring 241, a rotating shaft 242, a rotating gear 243 and a bevel gear 244; the gear ring 241 and the rotating shaft 242 are both rotatably arranged on the processing table 1, and the axis of the gear ring 241 is colinear with the axis of the storage plate 2; the rotating gear 243 is sleeved on the rotating shaft 242, and the rotating gears 243 are meshed and connected with the gear ring 241; there are two bevel gears 244, and the two bevel gears 244 are respectively sleeved on the rotating shaft 242 and the screw 231, and the two bevel gears 244 are meshed and connected.

[0052] The present invention realizes the function of controlling the synchronous rotation of multiple screw rods 231 through the gear ring 241, the rotating shaft 242 and the rotating gear 243. The driving end of the rotating driver 232 is connected to one of the rotating shafts 242. When the rotating driver 232 drives the rotating shaft 242 to rotate, the rotating shaft 242 drives the rotating gear 243 to rotate, the rotating gear 243 drives the gear ring 241 meshing with it to rotate, and the gear ring 241 drives the remaining rotating gears 243 to rotate, thereby controlling the synchronous rotation of multiple rotating shafts 242, and the rotating shaft 242 drives the screw rods 231 to rotate through the bevel gear 244, thereby controlling the synchronous rotation of multiple screw rods 231.

[0053] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A precision positioning fixture for machining hardware, characterized in that: It comprises a processing table (1), a storage tray (2) and an auxiliary control mechanism (3); The storage tray (2) is rotatably arranged on the processing table (1); at least three guide rails (21) are provided on the storage tray (2); a mounting seat (211) is slidably mounted on each guide rail (21); a first linear drive (2111) and a push rod (2112) are provided on the mounting seat (211); the first linear drive (2111) is used to drive the push rod (2112) to extend and retract; A clamp (22) for fixing the workpiece (4) is provided on the mounting seat (211), the clamp (22) comprising a main clamp block (221) and a secondary clamp block (222), the secondary clamp block (222) being hinged to the main clamp block (221), and a rubber layer (2221) is provided on a side of the secondary clamp block (222) away from the mounting seat (211); At least two push rods (2112) are provided on the mounting seat (211), one of the push rods (2112) is connected to the main clamping block (221), and the other push rod (2112) is movably hinged to the auxiliary clamping block (222); The storage tray (2) is provided with a linear drive assembly (23) for driving the mounting seat (211) to move along the guide rail (21); When the main clamping block (221) abuts against the workpiece (4), under the pushing action of the push rod (2112), the rubber layer (2221) of the auxiliary clamping block (222) abuts against the workpiece (4).

2. A precision positioning jig for hardware machining according to claim 1, characterized in that: Two groups of clamps (22) are provided on each mounting seat (211), and the two groups of clamps (22) are distributed on both sides of the first linear drive (2111) along the radial direction of the storage tray (2).

3. A precision positioning jig for hardware machining according to claim 1 or 2, characterized in that: An auxiliary control mechanism (3) for fixing the clamp (22) is provided on the mounting seat (211), and the auxiliary control mechanism (3) comprises a first locking component (31), a second locking component (32) and a control component (33); The first locking assembly (31) is used to fix the main clamping block (221); The second locking assembly (32) is used to fix the auxiliary clamping block (222); The control component (33) is used to control the opening and closing of the first locking component (31) and the second locking component (32); In a working state, when two sides of the main clamping block (221) are respectively in contact with the workpiece (4) and the first linear drive (2111), the first locking assembly (31) limits the movement of the main clamping block (221); when the auxiliary clamping block (222) is in contact with 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 auxiliary clamping block (222).

4. The precision positioning jig for machining hardware according to claim 3 is characterized in that: The first locking assembly (31) comprises a first clamping block (311) and a first elastic member (312); The first clamping block (311) is slidably mounted on the mounting seat (211); Two ends of the first elastic member (312) are respectively connected to the first clamping block (311) and the mounting seat (211); A first clamping slot (2211) is provided at the bottom end of the main clamping block (221) and is matched with the first clamping block (311); When the first clamping block (311) is clamped with the first clamping slot (2211), the movement of the main clamping block (221) is restricted.

5. The precision positioning jig for hardware machining according to claim 4 is characterized in that: The second locking assembly (32) comprises a second clamping block (321) and a second elastic member (322); The second clamping block (321) is slidably mounted on the auxiliary clamping block (222); Two ends of the second elastic member (322) are respectively connected to the auxiliary clamping block (222) and the second clamping block (321); The mounting seat (211) is provided with a second card slot (2113) matched with the second card block (321), and at least three second card slots (2113) are provided, and the plurality of second card slots (2113) are distributed at equal distances.

6. The precision positioning jig for machining hardware according to claim 5, characterized in that: The control assembly (33) includes a push plate (331) and an extension block (332); A second linear drive (34) for driving the push plate (331) is provided on the mounting seat (211); The push plate (331) is located above the extension block (332); The extension block (332) is connected to the first clamping block (311).

7. The precision positioning jig for machining hardware according to claim 6, characterized in that: A support (333) is movably provided on the mounting seat (211), and a filling block (3331) for cooperating with the second slot (2113) is provided on the support (333); A first transmission assembly (35) is provided on the mounting seat (211), and the support seat (333) is transmission-connected to the first clamping block (311) via the first transmission assembly (35).

8. The precision positioning jig for hardware machining according to claim 7, characterized in that: A guide rod (3332) is provided at the bottom of the support (333), and the guide rod (3332) is slidably matched with the mounting seat (211); The first transmission assembly (35) comprises a bracket (351) and a transmission rod (352); The bracket (351) is connected to 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 respectively hinged to the support (333) and the first clamping block (311).

9. The precision positioning jig for hardware machining according to claim 1, characterized in that: The linear drive assembly (23) includes a screw (231) and a rotary drive (232); At least two screw rods (231) are provided and correspond to the mounting seats (211) one by one. The screw rods (231) are rotatably arranged on the storage platform, and the screw rods (231) are threadedly connected to the mounting seats (211); The rotary driver (232) is disposed on the storage table, and the rotary driver (232) is used to drive one of the screw rods (231) to rotate; A second transmission assembly (24) is provided on the processing table (1), and a plurality of screw rods (231) are transmission-connected via the second transmission assembly (24).

10. The precision positioning jig for machining hardware according to claim 9, characterized in that: The second transmission assembly (24) comprises a gear ring (241), a rotating shaft (242), a rotating gear (243) and a bevel gear (244); The gear ring (241) and the rotating shaft (242) are both rotatably arranged on the processing table (1), and the axis of the gear ring (241) is colinear with the axis of the storage plate (2); The rotating gear (243) is sleeved on the rotating shaft (242), and the rotating gear (243) is meshedly connected with the gear ring (241); There are two bevel gears (244), which are respectively sleeved on the rotating shaft (242) and the screw rod (231), and the two bevel gears (244) are meshed and connected.

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