Positioning device for high-precision mold machining

Abstract

The utility model relates to the technical field of high-precision die processing, and solves the problems that the clamping force is uncontrollable, the elastic deformation range of a spring is fixed, the clamping force cannot be dynamically adjusted according to the size and the weight of a die, the die is shaken or the surface of the die is damaged due to too loose clamping, the spring is easy to attenuate due to fatigue, the clamping force is gradually reduced, and the machining precision is low. Clamping stability is affected, and frequent replacement and maintenance are needed; and vibration or external force impact in the machining process may cause deformation of the spring, resulting in displacement of the die and influence on the machining precision. The positioning device comprises a base, a groove is formed in the top face of the base, a bearing is sleeved with the groove, a connecting rod is sleeved with the bearing, a clamping table is fixed to the top end of the connecting rod, and a fixing groove is formed in the top face of the clamping table; the positioning assembly comprises a gear fixed to the output end of the driving motor, two toothed plates meshed with the two sides of the gear, connecting blocks fixed to the tops of the toothed plates and a positioning plate fixed to the connecting blocks.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -precision mould processing technical field, specifically be a positioning device for high -precision mould processing. BACKGROUND

[0002] The positioning device for high-precision mould processing disclosed in the patent application with publication number CN222627490U comprises a bottom plate, supporting legs are installed on the bottom surface of the bottom plate, a table top is arranged on the surface of the bottom plate, a limiting assembly is arranged on one side between the bottom plate and the table top, a fixing assembly is arranged on the inner side of the table top, a connecting plate is connected above the fixing assembly, and an elastic clamping assembly is arranged on the surface of the connecting plate.

[0003] When the user uses it, the elastic clamping assembly arranged through the arrangement of the corresponding structure can clamp molds of different shapes and sizes through the spring, the stability of clamping is improved, and excessive clamping force is not generated on the surface of the mold, the mold can be rotated by only adjusting the limiting assembly and rotating the table top when the orientation of the mold needs to be changed, and the rotation is more convenient.

[0004] The technical scheme in the comparative document has the effect of clamping the mold through the spring, but the clamping force is uncontrollable, the elastic deformation range of the spring is fixed, the clamping force cannot be dynamically adjusted according to the size and weight of the mold, the mold may shake due to loose clamping or the surface of the mold may be damaged due to tight clamping, the spring is prone to elastic attenuation due to fatigue, the clamping force gradually decreases, the clamping stability is affected, and the spring needs to be frequently replaced and maintained; vibration or external force impact during the processing process may deform the spring, displace the mold, and affect the processing precision. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a positioning device for high-precision mould processing, which solves the problems of uncontrollable clamping force, fixed elastic deformation range of the spring, inability to dynamically adjust the clamping force according to the size and weight of the mold, possible shaking of the mold due to loose clamping or damage to the surface of the mold due to tight clamping, spring prone to elastic attenuation due to fatigue, gradually decreasing clamping force, affecting clamping stability, and frequent replacement and maintenance of the spring; vibration or external force impact during the processing process may deform the spring, displace the mold, and affect the processing precision.

[0006] To achieve the above object, the utility model provides the following technical scheme: a positioning device for high-precision mould processing, comprising a base, a groove is formed in the top surface of the base, a bearing is sleeved in the groove, a connecting rod is sleeved in the bearing, a clamping table is fixed to the top end of the connecting rod, a fixing groove is formed in the top surface of the clamping table, a sleeve opening is arranged on the inner bottom wall of the fixing groove, a drive motor is sleeved in the sleeve opening, a brake structure is arranged on the bottom surface of the drive motor, a positioning assembly is connected to the output end of the drive motor, and limiting assemblies are symmetrically arranged on both sides of the top surface of the base.

[0007] The limiting assembly comprises an inner tube fixed to the base, a screw threadedly connected to the inner tube, and a friction plate fixed to the top end of the screw;

[0008] The positioning assembly comprises a gear fixed to the output end of the driving motor, two tooth plates meshed on both sides of the gear, a connecting block fixed to the top of the tooth plate, and a positioning plate fixed to the connecting block.

[0009] In a specific embodiment, the screw of the limiting assembly drives the friction plate to lift by rotating, so that the friction plate is in contact with the bottom surface of the clamping table to limit or release.

[0010] In a specific embodiment, the two tooth plates of the positioning assembly move towards or away from each other when the gear rotates, driving the two positioning plates to move in opposite directions along the surface of the clamping table.

[0011] In a specific embodiment, the back surface of the tooth plate is fixed with a sliding block, which is slidingly embedded in the frame of the inner side wall of the fixed groove.

[0012] In a specific embodiment, the driving motor locks the rotation of the output shaft through the brake structure when power is off.

[0013] In a specific embodiment, the clamping table is rotatably connected to the bearing through the connecting rod, and the rotation axis coincides with the central axis of the base groove.

[0014] Compared with the prior art, the positioning device for high-precision mold machining has the following advantages:

[0015] In the technical scheme disclosed by the utility model, the driving motor drives the gear to drive the two tooth plates to move towards each other, so that the positioning plate dynamically adjusts the clamping force, and the brake structure locks the output shaft when power is off, overcoming the defect of unstable spring clamping force; the sliding block on the back surface of the tooth plate is slidingly embedded in the frame of the fixed groove, ensuring that the gear-tooth plate transmission is linearly guided and avoiding deviation and jamming; the clamping table is coaxially rotated with the bearing through the connecting rod, and the motor is actively controlled and rigidly mechanically transmitted, eliminating the risk of spring fatigue failure and realizing stable clamping and precise positioning of the high-precision mold.

[0016] The positioning assembly of the utility model is embedded in the fixed groove sleeve of the clamping table and fixed, the output end is fixed with a gear through key connection, the two tooth plates are symmetrically meshed on both sides of the gear, the positioning plate is welded to the top of the tooth plate through the connecting block, the sliding block is welded to the back surface of the tooth plate, the sliding block is slidingly embedded in the frame sliding rail preinstalled on the inner side wall of the fixed groove, forming linear guidance constraint; the driving motor drives the gear to rotate forward or reverse after being powered on, driving the two tooth plates to move linearly towards or away from each other along the frame, so that the positioning plate applies controllable clamping force to the mold, and the brake structure locks the output shaft of the driving motor when power is off, preventing the clamping from loosening. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0018] Figure 1 It is the whole structure schematic view of the utility model;

[0019] Figure 2 It is the positioning assembly structure schematic view of the utility model;

[0020] Figure 3 It is the limiting assembly structure schematic view of the utility model;

[0021] Figure 4 It is the split structure schematic view of the utility model.

[0022] In the drawing: 1, base;2, bearing;3, connecting rod;4, clamping table;5, fixed groove;6, drive motor;7, clutch structure;8, positioning assembly;81, gear;82, toothed plate;83, connecting block;84, positioning plate;9, limiting assembly;91, inner thread pipe;92, screw;93, friction plate;10, sliding block;11, frame. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below with the accompanying drawings and examples, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

[0024] Figures 1-4 For an embodiment of the utility model, a positioning device for high-precision mold machining, comprising a base 1, a recess is formed on the top surface of the base 1, a bearing 2 is sleeved in the recess, a connecting rod 3 is sleeved in the bearing 2, a clamping table 4 is fixed on the top end of the connecting rod 3, a fixed groove 5 is formed on the top surface of the clamping table 4, a sleeve opening is arranged on the inner bottom wall of the fixed groove 5, a drive motor 6 is sleeved in the sleeve opening, a clutch structure 7 is arranged on the bottom surface of the drive motor 6, a positioning assembly 8 is connected to the output end of the drive motor 6, and limiting assemblies 9 are symmetrically arranged on both sides of the top surface of the base 1.

[0025] The specific problem that the specific embodiment aims at is that the clamping force is uncontrollable, the elastic deformation range of the spring is fixed, the clamping force cannot be dynamically adjusted according to the size and weight of the mold, the clamping force may be too loose to cause the mold to shake or too tight to cause the surface of the mold to be damaged, the spring is prone to elastic attenuation due to fatigue, the clamping force gradually decreases, the clamping stability is affected, and the spring needs to be frequently replaced and maintained; and the vibration or external force impact in the processing process may deform the spring, cause the mold to displace, and affect the processing precision. The utility model drives the gear 81 to move the two sides of the tooth plate 82 in opposite directions by the driving motor 6, dynamically adjusts the clamping force of the positioning plate 84, overcomes the defect that the spring clamping force is unstable, the sliding block 10 on the back of the tooth plate 82 is embedded in the frame 11 of the fixed groove 5, ensures that the gear 81-tooth plate 82 transmission is linearly guided, and deviation is avoided; the clamping table 4 is coaxially rotated with the bearing 2 through the connecting rod 3, cooperates with the motor active control and rigid mechanical transmission, eliminates the risk of spring fatigue failure, and realizes stable clamping and accurate positioning of high-precision molds.

[0026] The positioning assembly 8 comprises a gear 81 fixed with the output end of the driving motor 6, two tooth plates 82 engaged on the two sides of the gear 81, a connecting block 83 fixed on the top of the tooth plate 82, and a positioning plate 84 fixed with the connecting block 83. In the specific embodiment, the sliding block 10 is fixed on the back of the tooth plate 82 and is slidably embedded in the frame 11 on the inner wall of the fixed groove 5. The driving motor 6 is embedded in the fixed groove 5 of the clamping table 4 and is fixed, the output end is fixed with the gear 81 through key connection, the two sides of the gear 81 are symmetrically engaged with the two tooth plates 82, the top of the tooth plate 82 is welded with the positioning plate 84 through the connecting block 83, the back of the tooth plate 82 is welded with the sliding block 10, the sliding block 10 is slidably embedded in the frame 11 sliding rail preinstalled on the inner wall of the fixed groove 5, and linear guidance constraint is formed; the driving motor 6 drives the gear 81 to rotate forward or reverse after being powered on, drives the two tooth plates 82 to move linearly towards or away from each other along the frame 11, so that the positioning plate 84 applies a controllable clamping force to the mold, and the brake structure 7 locks the output shaft of the driving motor 6 when being powered off to prevent the clamping from being loose.

[0027] In the specific embodiment, the limiting assembly 9 comprises an inner tube 91 fixed with the base 1, a screw rod 92 screwed in the inner tube 91, and a friction plate 93 fixed at the top end of the screw rod 92; the screw rod 92 of the limiting assembly 9 drives the friction plate 93 to rise and fall by rotating, so that the friction plate 93 is in contact with the bottom surface of the clamping table 4 to limit or separate and release;

[0028] The screw rod 92 in the limiting assembly 9 is in threaded cooperation with the inner tube 91, and the friction plate 93 is lifted and lowered by rotating the screw rod 92 to form a surface contact friction limiting with the bottom surface of the clamping table 4; the screw rod 92 is accurately lifted and adjusted to realize the fine adjustment and rigid locking of the rotating angle of the clamping table 4, avoid accidental rotation caused by machining vibration, and ensure that the rotating axis is coaxial with the bearing 2 and the connecting rod 3, and the center of the groove in the base 1 is overlapped, thereby further improving the alignment accuracy.

[0029] The sliding block 10 is fixed on the back surface of the toothed plate 82 and is slidably embedded in the frame 11 on the inner side wall of the fixed groove 5;

[0030] The sliding block 10 is fixed on the back surface of the toothed plate 82 and is slidably embedded in the frame 11 on the inner side wall of the fixed groove 5; in the implementation, the cooperation of the sliding rail in the frame 11 and the sliding block 10 limits the toothed plate 82 to move only in a straight line, avoids the toothed plate 82 from being deflected or stuck due to lateral force when the gear 81 is driven, simultaneously reduces the tooth surface wear, and prolongs the service life of the transmission assembly.

[0031] The driving motor 6 locks the rotation of the output shaft through the brake structure 7 when power is off;

[0032] The driving motor 6 locks the rotation of the output shaft through the brake structure 7 when power is off; in the specific implementation, the brake structure 7 is internally provided with an electromagnetic brake, which instantly locks the output shaft when the driving motor 6 is powered off, prevents the toothed plate 82 and the positioning plate 84 from being retracted due to inertia or external force, ensures that the mold clamping state remains unchanged when power is suddenly off, and improves the machining safety and reliability.

[0033] Working principle: after the driving motor 6 is started, the gear 81 at the output end is rotated to drive the two side-engaged toothed plates 82 to move in opposite directions or in a straight line along the sliding rail of the frame 11 on the inner side wall of the fixed groove 5, the connecting block 83 is linked to the positioning plate 84 to apply a controllable clamping force to the mold, and the sliding block 10 on the back surface of the toothed plate 82 cooperates with the frame 11 to eliminate the transmission deflection; the brake structure 7 instantly locks the output shaft of the driving motor 6 when power is off to prevent the clamping from loosening; when the angle of the mold needs to be adjusted, the screw rod 92 of the rotation limiting assembly 9 is rotated to make the friction plate 93 separate from the bottom surface of the clamping table 4, the clamping table 4 is manually rotated, the coaxial structure of the bearing 2 and the connecting rod 3 is kept, the rotation accuracy is kept, the screw rod 92 is reversely rotated to drive the friction plate 93 to press the clamping table 4 to realize rigid locking after being positioned, and finally the stable clamping, accurate rotation and anti-vibration positioning of the high-precision mold are completed.

[0034] The control mode of the utility model is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming of the person skilled in the art, the power supply also belongs to the public knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the control mode and the circuit connection of the utility model are not explained in detail.

[0035] It should be noted that, in this document, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for high-precision mold processing, comprising a base (1), characterized in that: The base (1) top surface is provided with a groove, the groove is sleeved with a bearing (2), the bearing (2) is sleeved with a connecting rod (3), the connecting rod (3) top end is fixed with a clamping table (4), the clamping table (4) top surface is provided with a fixed groove (5), the fixed groove (5) inner bottom wall is provided with a sleeve opening, the sleeve opening is sleeved with a driving motor (6), the driving motor (6) bottom surface is provided with a brake structure (7), the driving motor (6) output end is connected with a positioning assembly (8), the base (1) top surface two sides are symmetrically provided with a limiting assembly (9); The limiting assembly (9) comprises an inner tube (91) fixed with the base (1), a screw rod (92) screwed in the inner tube (91) and a friction plate (93) fixed at the top end of the screw rod (92); The positioning assembly (8) comprises a gear (81) fixed with the driving motor (6) output end, two toothed plates (82) engaged with the gear (81) two sides, a connecting block (83) fixed at the top of the toothed plate (82) and a positioning plate (84) fixed with the connecting block (83).

2. The positioning device for high-precision mold machining according to claim 1, characterized in that: The screw rod (92) of the limiting assembly (9) drives the friction plate (93) to rise and fall by rotating, so that the friction plate (93) is in contact with the clamping table (4) bottom surface or separated from the clamping table (4) bottom surface.

3. The positioning device for high-precision mold machining according to claim 1, characterized in that: The two toothed plates (82) of the positioning assembly (8) move towards or away from each other when the gear (81) rotates, driving the two positioning plates (84) to move oppositely along the surface of the clamping table (4).

4. The positioning device for high-precision mold machining according to claim 1, characterized in that: The back surface of the toothed plate (82) is fixed with a sliding block (10), and the sliding block (10) is slidably embedded in the frame (11) of the inner side wall of the fixed groove (5).

5. The positioning device for high-precision mold machining according to claim 1, characterized in that: The driving motor (6) is locked by the brake structure (7) when power off.

6. The positioning device for high-precision mold machining according to claim 1, characterized in that: The clamping table (4) is rotatably connected with the bearing (2) through the connecting rod (3), and the rotation axis coincides with the center axis of the groove of the base (1).

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