Positioning and connecting mechanism for machining transmission shaft of electric tool

The positioning and connecting mechanism solves the problems of fixture wear and frequent replacement in the machining of power tool drive shafts, enabling machining of drive shafts of different specifications without the need to change fixtures, protecting the drive shaft surface, and improving machining efficiency and equipment life.

CN223573099UActive Publication Date: 2025-11-21NINGBO FUDE MACHINERY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423120405.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-11-21
Estimated Expiration
2034-12-17

AI Technical Summary

Technical Problem

During the machining process, the connection between the existing power tool drive shaft and the lathe suffers from severe wear, and the fixture needs to be frequently replaced to accommodate different drive shaft specifications.

Method used

The positioning and connection mechanism includes a connecting bushing, a fastening mechanism, a connecting seat, a return spring, and a positioning mechanism. By adjusting the screw and positioning pin, it can adapt to different specifications of drive shafts, avoid wear caused by direct clamping, and buffer the deformation generated during the clamping process through the return spring.

Benefits of technology

This technology enables the machining of drive shafts of different specifications without changing the fixture, reduces wear between the fixture and the drive shaft, protects the drive shaft surface, and improves machining efficiency and equipment lifespan.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223573099U_ABST
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Abstract

The positioning connecting mechanism for machining the transmission shaft of the electric tool comprises a connecting shaft sleeve, a fastening mechanism is arranged on the connecting shaft sleeve, a connecting seat is fixedly arranged at the other end of the connecting shaft sleeve, an ejector rod is arranged in the middle of the connecting seat, a return spring is further fixedly arranged on the connecting seat, and the ejector rod is located in the middle of the return spring. A plurality of fixing nuts and guide rods are arranged on the edge of the connecting seat, each fixing nut is connected with a fixing screw, a connecting disc is arranged on the upper portion of the connecting seat, and a positioning mechanism is arranged on the connecting disc and used for fixing a transmission shaft to be machined. The position can be adjusted at any time through the positioning mechanism, machining of transmission shafts of different specifications can be adapted, the situation that the transmission shaft is directly jacked on the connecting disc to cause deformation of the transmission shaft is avoided through the return spring in the process that the telescopic arm of the lathe tightly jacks the transmission shaft, the buffering effect is achieved, and the transmission shaft can be better protected in the turning process.
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Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool part processing field, especially a kind of positioning connecting mechanism for electric tool transmission shaft machining. BACKGROUND

[0002] Electric tool is mainly divided into metal cutting electric tool, polishing electric tool, assembly electric tool and railway electric tool, common electric tool has electric drill, electric grinder, electric wrench and electric screwdriver, electric hammer, impact electric drill etc., and the transmission shaft of electric tool is generally cut to transmission shaft by turning, but the transmission shaft of existing electric tool is generally clamped by the clamp of turning machine, and the clamp generally causes damage to the transmission shaft of lathe in the process of use, the main reason is that positioning screw is generally used to fix during clamping process, and positioning screw is directly contacted with the transmission shaft of lathe;Secondly, the existing clamp also causes abrasion with the transmission shaft of electric tool in the process of rotary processing, and different specifications of transmission shaft need to replace clamp constantly. SUMMARY

[0003] The utility model discloses a kind of positioning connecting mechanisms for electric tool transmission shaft machining, to solve the abrasion between clamp and lathe connection and the abrasion between clamp and transmission shaft to be processed, and also can adapt to different specifications transmission shaft to be processed, without back and forth replacement clamp.

[0004] The utility model discloses a kind of positioning connecting mechanisms for electric tool transmission shaft machining, to solve the abrasion between clamp and lathe connection and the abrasion between clamp and transmission shaft to be processed, and also can adapt to different specifications transmission shaft to be processed, without back and forth replacement clamp.

[0005] Positioning connecting mechanism for electric tool transmission shaft machining, including connecting shaft sleeve, the upper part of connecting shaft sleeve is provided with fastening mechanism, the other end of connecting shaft sleeve is fixedly arranged with connecting seat, the middle of connecting seat is provided with jack, back spring is also fixedly arranged on connecting seat, and the jack is located in the middle of back spring, the edge of connecting seat is uniformly provided with several fixed nuts and guide rods, each fixed nut is connected with fixed screw rod, the upper part of connecting seat is provided with connecting disc, positioning mechanism is provided on connecting disc, and the positioning mechanism is used to fix transmission shaft to be processed.

[0006] Preferably, the inside of the connecting shaft sleeve is provided with several clamping grooves, the fastening mechanism includes fastening nut, fastening screw rod and arc-shaped clamping block, the outer wall of the connecting shaft sleeve is arrayed with several fastening nuts, the fastening nut is installed in cooperation with the fastening screw rod, and one end of the fastening screw rod is movably connected with the arc-shaped clamping block.

[0007] Preferably, the arc-shaped clamping block corresponds to the clamping groove one by one, and the arc-shaped clamping block is located in the inside of the connecting shaft sleeve.

[0008] Preferably, the guide rod partially penetrates through the connecting disc, and the end penetrating through the connecting disc is also fixed with limiting block, the fixed nut also partially penetrates through the connecting disc, and the middle of the connecting disc is also provided with through hole.

[0009] Preferably, the positioning mechanism comprises sliding grooves, adjusting screws, telescopic springs, sliding blocks and positioning columns, a plurality of sliding grooves are formed in the connecting disc, the sliding blocks are movably arranged in the sliding grooves, the positioning columns are fixed on the sliding blocks, one end of the telescopic springs is fixedly connected to the bottom of the sliding blocks, the other end of the telescopic springs is fixedly connected to the inner end of the sliding grooves, and the adjusting screws are located in the interior of the connecting disc and partially extend into the sliding grooves and movably connected with the sliding blocks.

[0010] Preferably, the adjusting screws are in threaded connection with the interior of the connecting disc.

[0011] Preferably, the bottom end surface of each positioning column is in contact with the end surface of the connecting disc.

[0012] Principle of the utility model:

[0013] The utility model discloses a positioning connection mechanism for electric tool transmission shaft machining, which comprises a connecting disc, a connecting seat, a connecting shaft sleeve, a telescopic arm, a transmission shaft and a lathe, wherein the connecting disc is fixedly connected to the connecting seat, the connecting shaft sleeve is fixedly connected to the connecting disc, the telescopic arm is movably arranged on the lathe, the transmission shaft is movably arranged on the connecting shaft sleeve, and the lathe is arranged on the transmission shaft.

[0014] Advantages of the utility model:

[0015] 1. The positioning mechanism can adapt to the machining of transmission shafts of different specifications, the positioning column is always located in the sliding groove through the sliding block, and the position of the positioning column will not move after adjusting the position of the positioning column each time. Only when the position of the positioning column needs to be adjusted, the position of the positioning column will change. In this way, different specifications of transmission shafts can be machined without the need for replacement.

[0016] 2. The connecting disc and the connecting seat are connected through a return spring. When the telescopic arm of the lathe is tightened, the spring is compressed. In this way, the transmission shaft is not directly tightened on the connecting disc, which avoids the deformation of the transmission shaft and plays a buffering role, thereby better protecting the transmission shaft. DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional mechanism diagram of the positioning connection mechanism for electric tool transmission shaft machining.

[0018] Figure 2 Positioning connection mechanism for electric tool transmission shaft machining working schematic view;

[0019] Figure 3 Positioning connection mechanism for electric tool transmission shaft machining working schematic view; Figure 2 Partial structure view along A-A line in the middle;

[0020] Figure 4 Positioning connection mechanism for electric tool transmission shaft machining working schematic view; Figure 2 Structure view along B-B line in the middle;

[0021] In the figure: connecting sleeve 1, fastening mechanism 2, connecting seat 3, top rod 4, return spring 5, fixed nut 6, guide rod 7, fixed screw 8, connecting disc 9, positioning mechanism 10, clamping groove 11, fastening nut 20, fastening screw 21, arc-shaped clamping block 22, limiting block 12, through hole 13, transmission shaft 14, sliding groove 101, adjusting screw 102, telescopic spring 103, sliding block 104 and positioning column 105. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0023] Embodiment 1:

[0024] Referring to Figures 1-4 , the positioning connection mechanism for electric tool transmission shaft machining includes a connecting sleeve 1, a fastening mechanism 2 is arranged on the connecting sleeve 1, a connecting seat 3 is fixedly arranged at the other end of the connecting sleeve 1, a top rod 4 is arranged in the middle of the connecting seat 3, a return spring 5 is also fixedly arranged on the connecting seat 3, and the top rod 4 is located in the middle of the return spring 5, a plurality of fixed nuts 6 and guide rods 7 are arranged on the edges of the connecting seat 3, each fixed nut 6 is connected with a fixed screw 8, a connecting disc 9 is arranged on the upper part of the connecting seat 3, a positioning mechanism 10 is arranged on the connecting disc 9, and the positioning mechanism 10 is used for fixing a transmission shaft to be machined. The bottom of the transmission shaft to be machined 14 is provided with a circular hole, which is mainly matched with a positioning column 105. The main purpose of the fastening mechanism 2 is to fix the connecting sleeve 1 on the output shaft of a machine tool.

[0025] Referring to Figure 4 , a plurality of clamping grooves 11 are arranged in the connecting sleeve 1, the fastening mechanism 2 includes a fastening nut 20, a fastening screw 21 and an arc-shaped clamping block 22, a plurality of fastening nuts 20 are arranged in an array on the outer wall of the connecting sleeve 1, the fastening nuts 20 are installed in cooperation with the fastening screw 21, and one end of the fastening screw 21 is movably connected with the arc-shaped clamping block 22.

[0026] When fastening, the connecting shaft sleeve 1 is sleeved on the output shaft of the machine tool, at this time, the arc-shaped clamping block 22 is located in the clamping groove 11 inside the connecting shaft sleeve 1, so that installation is facilitated, when the output shaft reaches the position, the fastening screw 21 is manually tightened, so that the fastening screw 21 tightly adheres the arc-shaped clamping block 22 to the output shaft, the connecting part of the arc-shaped clamping block 22 and the fastening screw 21 is movably connected, so that fastening is facilitated and damage of the fastening screw 21 to the output shaft is avoided.

[0027] The arc-shaped clamping block 22 corresponds to the clamping groove 11 one by one, and the arc-shaped clamping block 22 is located inside the connecting shaft sleeve 1.

[0028] The guide rod 7 partially penetrates the connecting disc 9, and one end penetrating the connecting disc 9 is also fixed with a limiting block 12, the limiting block 12 is mainly used to prevent the connecting disc 9 from being separated from the guide rod 7 after the transmission shaft 14 is taken out, the fixed nut 6 also partially penetrates the connecting disc 9, a through hole 13 is also formed in the middle of the connecting disc 9, the through hole 13 is coaxial with the jacking rod 4, when the transmission shaft 14 is installed, the bottom of the transmission shaft 14 is embedded into the through hole 13, and the top of the jacking rod 4 is in contact.

[0029] Referring to Figure 3 , the positioning mechanism 10 comprises a sliding groove 101, an adjusting screw 102, an extension spring 103, a sliding block 104 and a positioning column 105, a plurality of sliding grooves 101 are formed on the connecting disc 9, the sliding block 104 is movably arranged in each sliding groove 101, the positioning column 105 is fixed on the sliding block 104, the bottom of the sliding block 104 is fixedly connected with one end of the extension spring 103, the other end of the extension spring 103 is fixedly connected with the inside of the sliding groove 101, the adjusting screw 102 is located inside the connecting disc 9, and partially extends into the sliding groove 101 and is movably connected with the sliding block 104.

[0030] Adjusting principle: the adjusting screw 102 is connected with the inside of the connecting disc 9 through threads, and one end of the adjusting screw 102 extends into the sliding groove 101 and is movably connected with the sliding block 104, when adjusting, the sliding block 104 is moved by rotating the adjusting screw 102, the sliding groove 101 is equivalent to a track, after adjusting, the position of the positioning column 105 is fixed, so that different specifications of the transmission shaft 14 can be adapted and adjusted without replacement. The extension spring 103 facilitates return. The bottom end surface of each positioning column 105 is in contact with the end surface of the connecting disc 9.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A positioning connecting mechanism for processing a transmission shaft of a power tool, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

2. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 1, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

3. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 2, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

4. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 1, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

5. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 1, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

6. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 5, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).

7. The positioning connection mechanism for the transmission shaft of the electric power tool according to claim 5, characterized in that: The utility model provides a connecting sleeve (1) is provided with fastening mechanism (2) on the upper portion, and the other end of connecting sleeve (1) is fixedly provided with connecting seat (3), and the middle portion of connecting seat (3) is provided with ejector rod (4), and reset spring (5) is also fixedly provided on connecting seat (3), and the ejector rod (4) is located in the middle of reset spring (5), and the edge of connecting seat (3) is provided with a plurality of fixed nuts (6) and guide rod (7), and each fixed nut (6) is connected with fixed screw rod (8), and the upper portion of connecting seat (3) is provided with connecting disc (9), and connecting disc (9) is provided with positioning mechanism (10).