Fixture and device with position degree consistency

By designing a clamping mechanism and adjustment components driven by a servo motor, the problem of clamping instability caused by wear of traditional fixtures is solved, and the clamping force is automatically adjusted and evenly distributed, thereby improving machining accuracy and workpiece position consistency.

CN223509210UActive Publication Date: 2025-11-04TIANJIN FALI AUTOMOBILE DIECASTINGS FACTORY
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Patent Information

Application Number
CN202423238497.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-11-04
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

Traditional fixtures suffer from reduced clamping force due to wear and tear during long-term use, affecting machining accuracy and positional consistency. They are also inconvenient to adjust and can easily cause parts to tilt or fall off.

Method used

The clamping mechanism, driven by a servo motor, combined with a clamping plate and an adjustment component, enables automatic adjustment and uniform distribution of clamping force. The servo motor drives the transmission connecting block to move the clamping plate and the adjustment component to perform clamping actions. The design of the adjustment component allows the clamping process to flexibly adapt to workpieces of different sizes and shapes.

Benefits of technology

It achieves automatic adjustment and uniform distribution of clamping force, improves clamping accuracy, avoids accuracy reduction caused by wear, and ensures consistent workpiece position and stable clamping.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fixture and device with position degree consistency, and belongs to the technical field of fixtures, the fixture with position degree consistency comprises a clamping mechanism, the clamping mechanism comprises a clamping assembly, the clamping assembly comprises a lower installation disc, a servo motor is installed above the lower installation disc, a clamping block is installed on the outer wall of the lower installation disc in a surrounding mode, and the clamping block is connected with the servo motor. A clamping plate is hinged to the bottom of the clamping block, the output end of the servo motor penetrates through the lower mounting disc to be in transmission connection with a transmission connecting block, the bottom of the transmission connecting block is in transmission connection with the clamping plate, and matched adjusting assemblies are mounted on the upper side and the lower side of the inner wall of the clamping plate and comprise lower clamping blocks and upper clamping blocks; the lower clamping block is slidably installed below the inner wall of the clamping plate in a limiting mode, the back of the lower clamping block is installed on the clamping plate in a transmission mode, the upper clamping block is elastically installed above the inner wall of the clamping plate, and the lower clamping block is used for increasing the clamping precision of the clamping plate through adjustment and preventing the clamping plate from inclining and falling off when clamping is conducted.
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Description

Technical Field

[0001] This utility model relates to the field of clamps, and more specifically, to a clamp and device with positional consistency. Background Technology

[0002] In the fields of machining and assembly, precise workpiece clamping is crucial for ensuring machining accuracy and consistent assembly position. In traditional fixture designs, the clamping plate, as the primary clamping component, often experiences wear on its surface and the parts in contact with the workpiece due to frequent clamping and releasing during long-term use. This wear not only reduces the clamping force of the clamping plate but also affects the clamping accuracy, leading to workpiece positional deviations during finishing processes.

[0003] Traditional adjustment methods typically attempt to improve clamping accuracy by changing the clamping position at the bottom of the clamping plate; however, this method has several drawbacks. First, due to uneven wear, simply adjusting the clamping position may not completely eliminate deviations. Second, frequent clamping adjustments are not only time-consuming and labor-intensive but may also cause additional damage to the overall structure of the clamping plate, and can easily lead to insecure clamping, causing parts to tilt or fall. How to invent a clamping device with consistent positional accuracy to improve these problems has become a pressing issue for those skilled in the art. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a clamp and device with consistent position, which aims to improve the problem that the clamping position at the bottom of the clamping plate is prone to insecure clamping, low precision, and easy tilting and falling of parts due to wear.

[0005] This utility model is implemented as follows: a fixture with positional consistency, comprising...

[0006] A clamping mechanism includes a clamping component, which includes a lower mounting plate. A servo motor is mounted above the lower mounting plate. A clamping block is mounted around the outer wall of the lower mounting plate. A clamping plate is hinged to the bottom of the clamping block. The output end of the servo motor passes through the lower mounting plate and is drivenly connected to a transmission connecting block. The bottom of the transmission connecting block is drivenly connected to the clamping plate. Adjustment components are mounted on the upper and lower sides of the inner wall of the clamping plate. The adjustment components include a lower clamping block and an upper clamping block. The lower clamping block is slidably mounted below the inner wall of the clamping plate, and its back is drivenly mounted to the clamping plate. The upper clamping block is elastically mounted above the inner wall of the clamping plate.

[0007] In a preferred embodiment of this utility model, an upper connecting plate is connected to the top of the lower mounting plate, and the upper connecting plate is connected to a lifting and displacement mechanism.

[0008] In a preferred embodiment of this utility model, the top side of the clamping block is fixedly connected to the lower mounting plate, and four clamping blocks are provided. The four clamping blocks are equally distributed and installed around the lower mounting plate. The output end of the servo motor is driven by a threaded rod, which passes through the lower mounting plate and is threadedly connected to the transmission connecting block.

[0009] In a preferred embodiment of this utility model, an upper connecting plate and an auxiliary connecting plate are respectively hinged to the bottom two sides of the clamping block. The other ends of the upper connecting plate and the auxiliary connecting plate are respectively hinged to the top two sides of the clamping plate. The auxiliary connecting plate is located on the top inner side of the clamping plate. Lower connecting plates are respectively hinged to the four walls of the transmission connecting block. The other ends of the lower connecting plates are respectively hinged to the middle of the auxiliary connecting plate.

[0010] In a preferred embodiment of this utility model, an adjusting bolt is provided on the back of the lower clamping block. The adjusting bolt is threaded through the back of the clamping plate and is rotatably connected to the back of the lower clamping block. A limiting slide rod is fixedly connected to the back of the lower clamping block and is slidably inserted into the interior of the clamping plate.

[0011] In a preferred embodiment of this utility model, the side of the lower clamping block near the outside of the clamping plate is rack-shaped, and the limiting slide rod is fixedly installed at the four corners of the back of the lower clamping block. The limiting slide rod is a regular polygon.

[0012] In a preferred embodiment of this utility model, a plug is provided on the outer wall of the through hole corresponding to the adjusting bolt on the back of the clamping plate.

[0013] In a preferred embodiment of this utility model, a pressing rod is fixedly connected to the four corners of the back of the upper clamping block. The pressing rod is slidably inserted into the clamping plate. A spring is sleeved on the outside of the lower connecting plate. The end of the spring abuts against the clamping plate. A limiting rod is fixedly connected to the middle of the back of the upper clamping block. A limiting plate is fixedly connected to the outside of the limiting rod. The limiting plate is limited and engaged with the clamping plate.

[0014] In a preferred embodiment of this utility model, the clamping plate has a sliding groove inside that cooperates with the limiting rod, the limiting plate slides in the sliding groove, and the outer dimensions of the sliding groove abut against the outer wall of the limiting rod.

[0015] In a preferred embodiment of this utility model, an apparatus includes a processing device, wherein a lifting and displacement mechanism is installed inside the processing device, and the holding mechanism is fixedly connected to the lifting and displacement mechanism.

[0016] The beneficial effects of this utility model are as follows: The fixture and device with consistent position obtained through the above design utilize a servo motor to drive the transmission connecting block, which in turn drives the clamping plate and the adjusting components to perform clamping actions, achieving automatic adjustment and uniform distribution of clamping force. Simultaneously, the design of the adjusting components makes the clamping process more flexible and adaptable to workpieces of different sizes and shapes. Furthermore, it avoids the problem of reduced accuracy due to long-term wear, which could affect the clamping process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the processing device provided in the embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the supporting mechanism provided for an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the disassembled structure of the bearing mechanism provided for an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of the structure of the adjustment component provided for an embodiment of this utility model.

[0022] In the diagram: 100 - Processing device; 200 - Holding mechanism; 210 - Holding component; 211 - Upper connecting plate; 212 - Lower mounting plate; 213 - Servo motor; 214 - Clamping block; 215 - Transmission connecting block; 216 - Upper connecting plate; 217 - Auxiliary connecting plate; 218 - Lower connecting plate; 219 - Clamping plate; 220 - Adjustment component; 221 - Lower clamping block; 222 - Limiting slide rod; 223 - Adjusting bolt; 224 - Cover; 225 - Upper clamping block; 226 - Limiting rod; 227 - Limiting plate; 228 - Extrusion rod; 229 - Spring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a fixture with positional consistency, comprising...

[0025] The clamping mechanism 200 includes a clamping component 210, which includes a lower mounting plate 212. A servo motor 213 is mounted on the upper part of the lower mounting plate 212. A clamping block 214 is mounted around the outer wall of the lower mounting plate 212. A clamping plate 219 is hinged to the bottom of the clamping block 214. The output end of the servo motor 213 passes through the lower mounting plate 212 and is connected to a transmission connecting block 215. The bottom of the transmission connecting block 215 is connected to the clamping plate 219. The inner wall of the plate 219 is equipped with a matching adjustment assembly 220 on both the upper and lower sides. The matching adjustment assembly 220 includes a lower clamping block 221 and an upper clamping block 225. The lower clamping block 221 is slidably installed on the lower inner wall of the clamping plate 219 and the back of the lower clamping block 221 is driven and installed on the clamping plate 219. The upper clamping block 225 is elastically installed on the upper inner wall of the clamping plate 219. The lower clamping block 221 is used to increase the clamping accuracy of the clamping plate 219 by adjustment, so as to prevent the parts from tilting or falling off when the clamping plate 219 is clamped.

[0026] Please see Figure 2 and Figure 3 The top of the lower mounting plate 212 is connected to the upper connecting plate 211, which is connected to the lifting and displacement mechanism. One side of the top of the clamping block 214 is fixedly connected to the lower mounting plate 212. Four clamping blocks 214 are evenly distributed and mounted around the lower mounting plate 212. The output end of the servo motor 213 is connected to a threaded rod, which passes through the lower mounting plate 212 and is threadedly connected to the transmission connecting block 215. The bottom two sides of the clamping block 214 are respectively hinged to an upper connecting plate 216 and an auxiliary connecting plate 217. The other ends of the upper connecting plate 216 and the auxiliary connecting plate 217 are respectively hinged to the top two sides of the clamping plate 219. The auxiliary connecting plate 217 is located on the top inner side of the clamping plate 219. The four walls of the transmission connecting block 215 are respectively hinged to lower connecting plates 218, and the other ends of the lower connecting plates 218 are respectively hinged to the middle of the auxiliary connecting plates 217.

[0027] Please see Figures 2 to 4An adjusting bolt 223 is provided on the back of the lower clamping block 221. The adjusting bolt 223 is threaded through the back of the clamping plate 219 and is rotatably connected to the back of the lower clamping block 221. A limiting slide rod 222 is fixedly connected to the back of the lower clamping block 221 and is slidably inserted into the interior of the clamping plate 219. The side of the lower clamping block 221 near the outside of the clamping plate 219 is rack-shaped. The limiting slide rod 222 is fixedly installed at the four corners of the back of the lower clamping block 221 and is a regular polygon. A plug 224 is sealed and engaged with the outer wall of the through hole at the location corresponding to the adjusting bolt 223 on the back of the clamping plate 219.

[0028] The upper clamping block 225 has four fixedly connected compression rods 228 at its back corners. The compression rods 228 are slidably inserted into the clamping plate 219. A spring 229 is sleeved on the outside of the lower connecting plate 218, and the end of the spring 229 abuts against the clamping plate 219. A limiting rod 226 is fixedly connected to the middle of the back of the upper clamping block 225. A limiting disc 227 is fixedly connected to the outside of the limiting rod 226. The limiting disc 227 is engaged with the clamping plate 219. The upper clamping block 225 is used to slightly limit irregular parts to prevent them from falling. The clamping plate 219 has a groove inside that matches the limiting rod 226. The limiting disc 227 slides in the groove. The outer dimension of the groove abuts against the outer wall of the limiting rod 226. The limiting disc 227 is used to limit and prevent the limiting rod 226 from running out. The diameter of the limiting disc 227 is larger than that of the limiting rod 226.

[0029] An apparatus includes a processing device 100, which has a lifting and displacement mechanism installed inside. A holding mechanism 200 is fixedly connected to the lifting and displacement mechanism. The lifting and displacement mechanism installed inside the processing device 100 is fixedly connected to the holding mechanism 200. Through precise control of the lifting and displacement mechanism, the holding mechanism 200 can be precisely positioned and moved within the processing device 100. When a workpiece is placed into the processing device 100, the holding mechanism 200 moves above the workpiece under the drive of the lifting and displacement mechanism. The servo motor 213 is started, and the workpiece is precisely clamped and positioned through the coordinated action of the transmission connecting block 215, the clamping plate 219, and the adjustment assembly 220.

[0030] Working principle: After the servo motor 213 starts, its output end is threadedly connected to the transmission connecting block 215 via a threaded rod, driving the transmission connecting block 215 to move up and down under the lower mounting plate 212. As the transmission connecting block 215 moves, the lower connecting plate 218 drives the auxiliary connecting plate 217 and the upper connecting plate 216, which in turn drives the clamping plate 219 to rotate around the bottom hinge point of the clamping block 214, realizing the clamping action. The lower clamping block 221 is limited and slidably adjusted within the clamping plate 219 by adjusting the bolt 223 and the limiting slide rod 222. This facilitates the clamping stability when the lower clamping block 221 becomes worn and its precision decreases, and the lower clamping block 221 is moved inward by adjusting the bolt 223 to compensate for the wear. The upper clamping block 225 uses the elastic action of the pressing rod 228 and the spring 229 to elastically and evenly clamp the workpiece. Meanwhile, the design of the limiting rod 226 and the limiting plate 227 ensures the stable sliding of the upper clamping block 225 within the clamping plate 219. The lifting and displacement mechanism installed inside the processing device 100 is fixedly connected to the holding mechanism 200. Through the precise control of the lifting and displacement mechanism, the holding mechanism 200 can be precisely positioned and moved within the processing device 100.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixture with positional consistency, characterized in that, include A clamping mechanism includes a clamping component, which includes a lower mounting plate. A servo motor is mounted above the lower mounting plate. A clamping block is mounted around the outer wall of the lower mounting plate. A clamping plate is hinged to the bottom of the clamping block. The output end of the servo motor passes through the lower mounting plate and is drivenly connected to a transmission connecting block. The bottom of the transmission connecting block is drivenly connected to the clamping plate. Adjustment components are mounted on the upper and lower sides of the inner wall of the clamping plate. The adjustment components include a lower clamping block and an upper clamping block. The lower clamping block is slidably mounted below the inner wall of the clamping plate, and its back is drivenly mounted to the clamping plate. The upper clamping block is elastically mounted above the inner wall of the clamping plate.

2. The fixture with positional consistency as described in claim 1, characterized in that: The top of the lower mounting plate is connected to an upper connecting plate, which is connected to a lifting and displacement mechanism.

3. A fixture with positional consistency as described in claim 2, characterized in that: The top side of the clamping block is fixedly connected to the lower mounting plate. There are four clamping blocks, which are equally distributed and installed around the lower mounting plate. The output end of the servo motor is connected to a threaded rod, which passes through the lower mounting plate and is threadedly connected to the transmission connecting block.

4. A positional consistency fixture as described in claim 3, characterized in that: The bottom two sides of the clamping block are respectively hinged to an upper connecting plate and an auxiliary connecting plate. The other ends of the upper connecting plate and the auxiliary connecting plate are respectively hinged to the top two sides of the clamping plate. The auxiliary connecting plate is located on the top inner side of the clamping plate. The four walls of the transmission connecting block are respectively hinged to a lower connecting plate. The other end of the lower connecting plate is respectively hinged to the middle of the auxiliary connecting plate.

5. A fixture with positional consistency as described in claim 4, characterized in that: An adjusting bolt is provided on the back of the lower clamping block. The adjusting bolt is threaded through the back of the clamping plate and is rotatably connected to the back of the lower clamping block. A limiting slide rod is fixedly connected to the back of the lower clamping block and is slidably inserted into the interior of the clamping plate.

6. A fixture with positional consistency as described in claim 5, characterized in that: The side of the lower clamping block near the outside of the clamping plate is rack-shaped, and the limiting slide rod is fixedly installed at the four corners of the back of the lower clamping block. The limiting slide rod is a regular polygon.

7. A positional consistency fixture as described in claim 5, characterized in that: A plug is fitted to the outer wall of the through hole on the back of the clamp plate corresponding to the adjusting bolt.

8. A fixture with positional consistency as described in claim 7, characterized in that: The upper clamping block has four corners of its back fixedly connected with compression rods. The compression rods are slidably inserted into the clamping plate. The lower connecting plate is sleeved with a spring. The end of the spring abuts against the clamping plate. The upper clamping block has a limit rod fixedly connected to the middle of its back. The limit rod has a limit plate fixedly connected to the outside of the limit plate. The limit plate is locked to the clamping plate.

9. A fixture with positional consistency as described in claim 8, characterized in that: The clamping plate has a sliding groove inside that cooperates with the limiting rod. The limiting plate slides in the sliding groove, and the outer dimensions of the sliding groove abut against the outer wall of the limiting rod.

10. An apparatus comprising a positional consistency fixture as described in any one of claims 1-9, characterized in that: The device includes a processing apparatus, the interior of which is equipped with a lifting and displacement mechanism, and the holding mechanism is fixedly connected to the lifting and displacement mechanism.