A force multiplying clamping turntable positioning mechanism

Abstract

The utility model discloses a kind of rotary table positioning mechanisms of force multiplication clamping, belong to machining technical field.The utility model includes base subassembly, rotary table subassembly, plug-in rod subassembly and limiting component.The base of base subassembly top center inserts bearing, and is provided with through-hole, first threaded hole and second threaded hole;The connecting plate of rotary table subassembly is connected with bearing sleeve through rotating shaft, and outer periphery is equipped with limiting tooth block;The first electric push rod of plug-in rod subassembly drives plug-in rod and inserts the through-hole of base and connecting plate, realizes preliminary positioning;Second electric push rod of limiting component is connected by connecting pin, connecting block and the like and constitutes lever structure, to limiting tooth block force multiplication clamping.The utility model is through the synergic effect of double positioning and force multiplication clamping, and positioning accuracy is high, and clamping force can amplify electric push rod thrust, applicable to precision machining and automated production line scene.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, specifically to a turntable positioning mechanism with force multiplier clamping. Background Technology

[0002] In fields such as machining and automated assembly, the turntable is a key component that carries workpieces and enables angle adjustment. Its positioning accuracy and clamping stability directly affect the machining quality and production efficiency.

[0003] Traditional turntable positioning mechanisms typically employ a single pin for positioning or a simple bolt clamping method, which has the following technical drawbacks:

[0004] 1. Insufficient positioning accuracy: The clearance between a single pin and a hole can easily cause slight wobbling of the turntable during processing, especially when subjected to radial loads, which can amplify the error and fail to meet the processing requirements of precision parts.

[0005] 2. Limited clamping force: Traditional bolt clamping relies on manual tightening, resulting in poor uniformity of clamping force and difficulty in quantification. When the workpiece weight is excessive, turntable displacement often occurs, leading to an increase in scrap rate. Utility Model Content

[0006] The purpose of this utility model is to provide a turntable positioning mechanism with force multiplication clamping. By setting up a base assembly, a turntable assembly and two limit assemblies, the second electric push rod of the limit assembly drives the connecting block, connecting pin and other components to form a lever structure to achieve force multiplication clamping. It also cooperates with the insertion rod assembly to insert into the through hole and through port for positioning, which solves the problems of insufficient positioning accuracy and limited clamping force of traditional turntable positioning mechanisms.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model is a force-multiplying clamping turntable positioning mechanism, including a base assembly, a turntable assembly and three positioning rod assemblies.

[0009] The base assembly includes a base, a bearing is embedded in the center of the top of the base, and the top of the base has two through holes, two first threaded holes and two second threaded holes.

[0010] The turntable assembly includes a connecting plate, a rotating shaft is fixedly connected to the bottom of the connecting plate, three through holes are opened on the connecting plate, and multiple limiting teeth are fixedly connected to the outer circumferential surface of the connecting plate.

[0011] Two limiting components are provided. Each limiting component includes a second electric push rod, a fixing block, and a connecting pin. A second bolt is fitted through the base of the second electric push rod, and a first bolt is fitted through the fixing block. A connecting seat is fixedly connected to the end of the fixing block, and the connecting seat is hinged to the connecting block via the connecting pin. The end of the connecting block is fixed to the output end of the second electric push rod.

[0012] Furthermore, a turntable is fixedly connected to the top of the connecting plate. The turntable is located above the limiting component, and the center of the through opening and the through hole are on the same vertical line. The rotating shaft is sleeved and fitted inside the bearing.

[0013] Furthermore, the positioning rod assembly includes a first electric push rod, the top of which is fixedly connected to an insert rod.

[0014] Furthermore, the insertion rod is inserted into the through hole and through port from bottom to top.

[0015] Furthermore, the connecting block is rotatably connected to the inner side of the connecting seat by a connecting pin. A through groove is provided on the first bolt, and the threaded end of the first bolt moves through the through groove of the fixing block. A gap is left between the nut end of the first bolt and the fixing block, and the threaded end of the first bolt is threadedly engaged in the first threaded hole.

[0016] Furthermore, a through hole is provided on the base of the second electric actuator, the threaded end of the second bolt moves through the through hole of the second electric actuator, and there is a gap between the nut end of the second bolt and the base of the second electric actuator, and the threaded end of the second bolt is threadedly engaged in the second threaded hole.

[0017] Furthermore, the fixing block is rotatably fitted to the top of the base by the first bolt, and the second electric push rod is rotatably fitted to the top of the base by the second bolt.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model uses the thrust of the second electric push rod to increase the actual clamping force of the fixed block on the limiting tooth block through the lever mechanism composed of the connecting pin, connecting block and connecting seat, thereby avoiding the use of a high-power hydraulic / pneumatic system and reducing energy consumption.

[0020] 2. This utility model meets the cycle time requirements of automated production lines through the synchronous electric control of the first electric push rod and the second electric push rod. The gap design between the first bolt, the second bolt and the base allows the limit component to self-adjust, compensates for the installation verticality error between the base and the turntable, and reduces the assembly difficulty. The wedge-shaped surface at the end of the fixed block is embedded in the tooth groove of the limit tooth block, so the clamping force does not decrease under vibration environment and remains locked after power failure.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the turntable positioning mechanism;

[0023] Figure 2 A schematic diagram of the top cross-sectional structure of the turntable positioning mechanism;

[0024] Figure 3 A schematic diagram of the front cross-sectional structure of the turntable positioning mechanism;

[0025] Figure 4 This is a structural diagram of the base assembly;

[0026] Figure 5 This is a structural schematic diagram of the turntable assembly;

[0027] Figure 6 This is a schematic diagram of the limit component.

[0028] In the diagram: 1. Base assembly; 101. Base; 102. Bearing; 103. Through hole; 104. First threaded hole; 105. Second threaded hole; 2. Turntable assembly; 201. Connecting plate; 202. Turntable; 203. Rotating shaft; 204. Through port; 205. Limiting tooth block; 3. First electric push rod; 4. Limiting assembly; 401. Second electric push rod; 402. Fixing block; 403. First bolt; 404. Second bolt; 405. Connecting seat; 406. Connecting pin; 407. Connecting block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6 This utility model provides a technical solution: a force-multiplying clamping turntable positioning mechanism, including a base assembly 1, a turntable assembly 2 and three positioning rod assemblies 3.

[0031] The base assembly 1 includes a base 101, a bearing 102 is embedded in the center of the top of the base 101, and two through holes 103, two first threaded holes 104 and two second threaded holes 105 are respectively opened on the top of the base 101.

[0032] The turntable assembly 2 includes a connecting plate 201, a rotating shaft 203 is fixedly connected to the bottom end of the connecting plate 201, three through holes 204 are provided on the connecting plate 201, a plurality of limiting teeth 205 are fixedly connected to the outer peripheral surface of the connecting plate 201, and a turntable 202 is fixedly connected to the top end of the connecting plate 201. The turntable 202 is located above the limiting assembly 4. The center of the through holes 204 and the through holes 103 are on the same vertical line. The rotating shaft 203 is sleeved and fitted in the bearing 102.

[0033] The positioning rod assembly 3 includes a first electric push rod 301, and a plug rod 302 is fixedly connected to the top end of the first electric push rod 301. The plug rod 302 is inserted and engaged with the through hole 103 and the through opening 204 from bottom to top.

[0034] The first electric push rod 301 extends, pushing the insertion rod 302 upward through the through hole 103 of the base 101 and through the through hole 204 of the connecting plate 201. The insertion rod 302 restricts the vertical displacement and some rotational degrees of freedom of the turntable assembly 2, achieving initial positioning.

[0035] Two limiting components 4 are provided. Each limiting component 4 includes a second electric push rod 401, a fixing block 402, and a connecting pin 406. A second bolt 404 is threaded through the base of the second electric push rod 401. A first bolt 403 is threaded through the fixing block 402. A connecting seat 405 is fixedly connected to the end of the fixing block 402. A connecting block 407 is hinged to the connecting seat 405 via the connecting pin 406. The end of the connecting block 407 is fixed to the output end of the second electric push rod 401. The connecting block 407 is rotatably connected to the inner side of the connecting seat 405 via the connecting pin 406. A through groove is provided on the first bolt 403, and the threaded end of the first bolt 403 movably passes through the fixing block 402. The second electric push rod 401 has a through hole on its base. The threaded end of the first bolt 403 is threaded into the first threaded hole 104. The threaded end of the second electric push rod 404 passes through the through hole of the second electric push rod 401 and is threaded into the base of the second electric push rod 401. The threaded end of the second bolt 404 is threaded into the second threaded hole 105. The fixing block 402 is rotatably fitted on the top of the base 101 by the first bolt 403. The second electric push rod 401 is rotatably fitted on the top of the base 101 by the second bolt 404.

[0036] The output end of the second electric push rod 401 extends to push the connecting block 407. The connecting block 407 is hinged to the connecting seat 405 through the connecting pin 406, forming a lever fulcrum. The thrust of the second electric push rod 401 is transmitted through the connecting pin 406, causing the fixed block 402 to rotate around the first bolt 403. There is a gap between the first bolt 403 and the fixed block 402 to allow rotation. The end of the fixed block 402 abuts against the limiting tooth block 205. Since the lever ratio is set to 1:2, the actual clamping force is twice the thrust of the electric push rod. The limiting components 4 on both sides move synchronously to form a symmetrical clamping of the limiting tooth block 205, eliminating the rotation gap of the turntable assembly 2 and improving the positioning accuracy.

[0037] Unlocking and Resetting: First, retract the second electric push rod 401, the fixing block 402 disengages from the limiting tooth block 205, and the clamping is released. Then, retract the first electric push rod 301, the insertion rod 302 disengages from the through port 204 and through hole 103, and the turntable assembly 2 returns to a free rotation state.

[0038] Working principle: Precise positioning is achieved through the synergistic effect of mechanical pin positioning and lever clamping. The first electric push rod 301 drives the insertion rod 302 to insert into the through hole 103 and through opening 204 of the base 101 and turntable assembly 2 to complete the initial positioning; then the second electric push rod 401 drives the lever structure of the limiting assembly 4, and the hinge fulcrum of the connecting pin 406 amplifies the thrust and acts on the limiting tooth block 205 of the turntable assembly 2 to achieve force-multiplying clamping and eliminate rotational backlash.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A force-multiplying clamping turntable positioning mechanism, characterized in that, include: The base assembly (1) includes a base (101), a bearing (102) is embedded in the top center of the base (101), and the top of the base (101) is provided with two through holes (103), two first threaded holes (104) and two second threaded holes (105). Turntable assembly (2), the turntable assembly (2) includes a connecting plate (201), the bottom end of the connecting plate (201) is fixedly connected to a rotating shaft (203), the connecting plate (201) has three through holes (204), and the outer peripheral surface of the connecting plate (201) is fixedly connected to a plurality of limiting tooth blocks (205). Two limiting components (4) are provided. Each limiting component (4) includes a second electric push rod (401), a fixing block (402), and a connecting pin (406). A second bolt (404) is fitted through the base of the second electric push rod (401). A first bolt (403) is fitted through the fixing block (402). A connecting seat (405) is fixedly connected to the end of the fixing block (402). The connecting seat (405) is hinged to the connecting block (407) through the connecting pin (406). The end of the connecting block (407) is fixed to the output end of the second electric push rod (401).

2. The force-multiplying clamping turntable positioning mechanism according to claim 1, characterized in that, The top of the connecting plate (201) is fixedly connected to a turntable (202), the turntable (202) is located above the limiting component (4), the center of the through port (204) and the through hole (103) are on the same vertical line, and the rotating shaft (203) is sleeved and fitted in the bearing (102).

3. The force-multiplying clamping turntable positioning mechanism according to claim 1, characterized in that, It also includes three insert rod assemblies (3), each insert rod assembly (3) including a first electric push rod (301), the top end of which is fixedly connected to an insert rod (302).

4. The force-multiplying clamping turntable positioning mechanism according to claim 3, characterized in that, The insertion rod (302) is inserted into the through hole (103) and the through opening (204) from bottom to top.

5. The force-multiplying clamping turntable positioning mechanism according to claim 1, characterized in that, The connecting block (407) is rotatably connected to the inner side of the connecting seat (405) by the connecting pin (406). The first bolt (403) has a through groove. The threaded end of the first bolt (403) moves through the through groove of the fixing block (402). There is a gap between the nut end of the first bolt (403) and the fixing block (402). The threaded end of the first bolt (403) is threadedly engaged in the first threaded hole (104).

6. The force-multiplying clamping turntable positioning mechanism according to claim 1, characterized in that, The base of the second electric push rod (401) has a through hole. The threaded end of the second bolt (404) moves through the through hole of the second electric push rod (401) and there is a gap between the nut end of the second bolt (404) and the base of the second electric push rod (401). The threaded end of the second bolt (404) is threaded into the second threaded hole (105).

7. The force-multiplying clamping turntable positioning mechanism according to claim 6, characterized in that, The fixing block (402) is rotatably fitted to the top of the base (101) by the first bolt (403), and the second electric push rod (401) is rotatably fitted to the top of the base (101) by the second bolt (404).

Images