Manual locking expansion sleeve mechanism

Abstract

The utility model relates to the technical field of lathe fixtures, in particular to a manual locking expansion sleeve mechanism which comprises an expansion sleeve body, a bearing mechanism is fixedly connected to the bottom of the expansion sleeve body and comprises a positioning seat and an inner ring fastener, the positioning seat is fixedly connected to the bottom of the expansion sleeve body, the inner ring fastener is connected to the bottom of the positioning seat in a clamped mode, and the inner ring fastener is connected to the inner ring fastener in a clamped mode. A locking mechanism is fixedly connected to the interior of the bearing mechanism, and an anti-loosening mechanism is fixedly connected to the upper side of the bearing mechanism; and an adapting mechanism is fixedly connected to the interior of the expansion sleeve body and comprises an expansion core, an adapting hole and an expansion seam, and the expansion core is fixedly connected to the interior of the positioning seat. According to the manual locking expansion sleeve mechanism, through the arrangement of the expansion core, the adaptation hole and the expansion seam, when the manual locking expansion sleeve mechanism is used, internal stress and strain can be relieved, smooth expansion of the expansion sleeve is guaranteed, the expansion sleeve and a workpiece can be prevented from slipping, the production and machining precision is improved, and the rate of finished products is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe clamps, in particular to a manual locking expansion sleeve mechanism. Background Art

[0002] The expansion sleeve (abbreviated as expansion sleeve) is an advanced basic component widely used in the world for mechanical connection under heavy loads. In the connection between wheels and shafts, it is a keyless connection device that transmits load by tightening high-strength bolts to generate pressure and friction between the containing surfaces.

[0003] The adapter sleeve is the most commonly used component when locating a bearing with a tapered hole on a cylindrical shaft, because this sleeve can be used for a smooth shaft or a stepped shaft. This sleeve is easy to install and does not need to be fixed on the shaft separately. When using an adapter sleeve on a smooth shaft, the bearing can be positioned at any position on the shaft. When used together with a stepped ring on a stepped shaft, the bearing can be accurately positioned axially and it is also convenient for the bearing to be removed. The adapter sleeve is used to fix a tapered bore self-aligning bearing (self-aligning ball bearing, self-aligning roller bearing) on ​​a shaft without a shoulder.

[0004] Adapter sleeves are used to fix tapered bore self-aligning bearings (self-aligning ball bearings, self-aligning roller bearings) on shafts without shoulders. They have simple structures, reliable operation, and easy bearing replacement. They are widely used in industries such as textiles, light industry, papermaking, metallurgy, belt transportation and conveying equipment.

[0005] A manual locking expansion sleeve mechanism disclosed in CN 220372239 U comprises: a positioning seat, the outer diameter of the top of the positioning seat decreases from top to bottom; an expansion sleeve, the inner diameter of the expansion sleeve increases from top to bottom, and the expansion sleeve is slidably sleeved on the top of the positioning seat; a driving module, the driving module is sleeved on the top of the positioning seat and connected to the expansion sleeve, and the driving module drives the expansion sleeve to expand or reset. The utility model uses a wrench to quickly lock, thereby fixing the workpiece, has a simple structure, is suitable for CNC lathes, locates the inner hole of the workpiece, has high precision, and is convenient and fast to disassemble and assemble the workpiece.

[0006] However, the device is not equipped with an adaptation mechanism, and the ordinary locking sleeve cannot completely match the expansion core, resulting in insufficient locking force. During operation, loosening and shaking may occur, greatly affecting production efficiency. The device is not equipped with a buffer mechanism. Due to the tight connection between the components, there is a large clamping force, which will increase the pressure between the components and cause wear of the connecting devices. Utility Model Content

[0007] The purpose of the utility model is to provide a manual locking expansion sleeve mechanism to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A manual locking expansion sleeve mechanism, comprising an expansion sleeve body, a bearing mechanism fixedly connected to the bottom of the expansion sleeve body, the bearing mechanism comprising a positioning seat and an inner ring fastener, a positioning seat fixedly connected to the bottom of the expansion sleeve body, an inner ring fastener clamped to the bottom of the positioning seat, a locking mechanism fixedly connected to the inside of the bearing mechanism, and an anti-loosening mechanism fixedly connected to the upper side of the bearing mechanism;

[0010] An adaption mechanism is fixedly connected inside the expansion sleeve body, and the adaption mechanism includes an expansion core, an adaption hole and an expansion seam. An expansion core is fixedly connected inside the positioning seat, a buffer pad is inserted on the outside of the expansion core, an adaption hole is opened inside the buffer pad, and an expansion seam is opened on the outside of the buffer pad. A buffer mechanism is inserted on the upper side of the adaption mechanism.

[0011] Preferably, the locking mechanism includes an inner hole, a rotating groove and a hexagonal screw. The bottom of the expansion sleeve body is fixedly connected to a positioning seat, the top of the positioning seat is provided with an inner hole, the inner thread of the inner hole is connected with a hexagonal screw, and a rotating groove is provided on the inner side of the bottom of the positioning seat.

[0012] Preferably, the anti-loosening mechanism includes an anti-loosening hole, an anti-loosening ring and an anti-loosening bolt. The bottom of the expansion sleeve body is fixedly connected to a positioning seat, the upper side of the positioning seat is provided with an anti-loosening hole, the inner thread of the anti-loosening hole is connected to an anti-loosening bolt, and one end of the anti-loosening ring is fixedly connected to the anti-loosening ring.

[0013] Preferably, the buffer mechanism comprises a buffer groove and a buffer pad, the buffer groove is provided at the top of the inner side of the expansion sleeve body, and the buffer pad is clamped inside the buffer groove.

[0014] Preferably, the top of the expansion sleeve body is fixedly connected to the upper sleeve body, the bottom of the upper sleeve body is fixedly connected to a threaded interface, a threaded groove is opened inside the positioning seat, the threaded interface is threadedly connected to the threaded groove, a clamping block is fixedly connected to the inner side of the bottom of the positioning seat, and the inner ring fastener is provided with a clamping groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. This manual locking expansion sleeve mechanism, through the setting of the expansion core, the adaptation hole and the expansion seam, can relieve internal stress and strain when used, ensure smooth expansion of the expansion sleeve, prevent the expansion sleeve and the workpiece from slipping, improve the accuracy of production and processing, and prevent the reduction of the yield rate.

[0017] 2. This manual locking expansion sleeve mechanism, through the setting of buffer grooves and buffer pads, when the parts are connected, due to the huge friction and clamping force between the parts and the shaft parts, the buffer pads can relieve the pressure between the components and prevent the wear caused by installation and locking. It has high resilience and can meet the needs of socketing different expansion cores, reducing the cost of design and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the locking mechanism and the adapting mechanism of the utility model;

[0021] Figure 4 It is a schematic cross-sectional view of the expansion sleeve main body of the utility model.

[0022] In the figure: 100, expansion sleeve body; 101, expansion core; 102, adaptation hole; 103, expansion seam; 104, upper sleeve body; 105, threaded interface; 106, threaded groove; 107, clamping block; 108, clamping groove; 201, positioning seat; 202, inner ring fastener; 301, inner hole; 302, rotation groove; 303, hexagonal screw; 401, anti-loosening hole; 402, anti-loosening ring; 403, anti-loosening bolt; 501, buffer groove; 502, buffer pad. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0025] A manual locking expansion sleeve mechanism comprises an expansion sleeve body 100, a bearing mechanism is fixedly connected to the bottom of the expansion sleeve body 100, the bearing mechanism comprises a positioning seat 201 and an inner ring fastener 202, a positioning seat 201 is fixedly connected to the bottom of the expansion sleeve body 100, and the inner ring fastener 202 is clamped at the bottom of the positioning seat 201. Through the arrangement of the positioning seat 201 and the inner ring fastener 202, when in use, the positioning seat 201 can prevent the expansion sleeve from moving, and is buckled with the inner ring fastener 202 so that it can reach the installation position smoothly, correctly and quickly during installation, so as to ensure To ensure the stability and effectiveness of the expansion sleeve, a locking mechanism is fixedly connected inside the bearing mechanism, and an anti-loosening mechanism is fixedly connected on the upper side of the bearing mechanism. Through the setting of the bearing mechanism, the locking mechanism and the anti-loosening mechanism, when in use, the bearing mechanism can reach the installation position smoothly, correctly and quickly during installation to ensure the stability and effectiveness of the expansion sleeve. The locking mechanism can provide greater friction and tightening force to prevent the structure from loosening due to external forces, so as to achieve a fixed connection between the machine parts and the shaft. The anti-loosening mechanism can increase the friction to increase the resistance of tightening and prevent loosening.

[0026] An adaption mechanism is fixedly connected inside the expansion sleeve body 100, and the adaption mechanism includes an expansion core 101, an adaption hole 102 and an expansion seam 103. The expansion core 101 is fixedly connected inside the positioning seat 201, and a buffer pad 502 is inserted on the outside of the expansion core 101. The buffer pad 502 is provided with an adaption hole 102 inside, and an expansion seam 103 is provided on the outside of the buffer pad 502. Through the arrangement of the expansion core 101, the adaption hole 102 and the expansion seam 103, the internal stress and strain can be relieved, the smooth expansion of the expansion sleeve can be ensured, the expansion sleeve and the workpiece can be prevented from slipping, the accuracy of production and processing can be improved, and the yield rate can be prevented from being reduced. A buffer mechanism is inserted on the upper side of the adaption mechanism, and the buffer mechanism can prevent wear caused by installation and locking, has high resilience, can meet the needs of sleeved different expansion cores 101, and reduces the cost of design and manufacturing.

[0027] In the present embodiment, preferably, the locking mechanism includes an inner hole 301, a rotating groove 302 and a hexagonal screw 303, the bottom of the expansion sleeve body 100 is fixedly connected with a positioning seat 201, the top of the positioning seat 201 is provided with an inner hole 301, the inner thread of the inner hole 301 is connected with a hexagonal screw 303, and the inner side of the bottom of the positioning seat 201 is provided with a rotating groove 302. Through the arrangement of the inner hole 301, the rotating groove 302 and the hexagonal screw 303, when in use, the positioning seat 201 and the inner ring fastener 202 are fixed by the hexagonal screw 303, which can provide greater friction and tightening force to prevent the structure from being loosened by external force, so as to realize the fixed connection between the machine part and the shaft.

[0028] In the present embodiment, preferably, the anti-loosening mechanism includes an anti-loosening hole 401, an anti-loosening ring 402 and an anti-loosening bolt 403, the bottom of the expansion sleeve main body 100 is fixedly connected with a positioning seat 201, the upper side of the positioning seat 201 is provided with an anti-loosening hole 401, the inner thread of the anti-loosening hole 401 is connected with an anti-loosening bolt 403, and one end of the anti-loosening bolt 403 is fixedly connected with an anti-loosening ring 402. Through the arrangement of the anti-loosening hole 401, the anti-loosening ring 402 and the anti-loosening bolt 403, when in use, the anti-loosening sleeve is fixed to the positioning seat 201, the contact area between the anti-loosening sleeve and the expansion sleeve is increased, thereby increasing the friction force to increase the fastening resistance and prevent loosening.

[0029] In the present embodiment, preferably, the buffer mechanism includes a buffer groove 501 and a buffer pad 502. The buffer groove 501 is opened on the inner top of the expansion sleeve body 100, and the buffer pad 502 is clamped inside the buffer groove 501. Through the arrangement of the buffer groove 501 and the buffer pad 502, when the machine parts are connected, due to the huge friction and clamping force between the machine parts and the shaft parts, the buffer pad 502 can relieve the pressure between the components and prevent the wear caused by the installation and locking. It has high resilience and can meet the needs of sleeves of different expansion cores 101, thereby reducing the cost of design and manufacturing.

[0030] In this embodiment, preferably, the top of the expansion sleeve main body 100 is fixedly connected to the upper sleeve body 104, the bottom of the upper sleeve body 104 is fixedly connected to the threaded interface 105, the interior of the positioning seat 201 is provided with a threaded groove 106, the threaded interface 105 is threadedly connected to the threaded groove 106, the bottom inner side of the positioning seat 201 is fixedly connected with a clamping block 107, and the inner ring fastener 202 is provided with a clamping groove 108. Through the arrangement of the upper sleeve body 104, the threaded groove 106, the threaded interface 105, the clamping block 107 and the clamping groove 108, when in use, the top of the expansion sleeve structure is stably and reliably connected through the threaded connection, the positioning seat 201 and the inner ring fastener 202 are rotatably buckled, the docking accuracy is high, and it can withstand a large load.

[0031] When a manual locking expansion sleeve mechanism of the present embodiment is in use, through the arrangement of the bearing mechanism, the locking mechanism and the anti-loosening mechanism, the bearing mechanism can reach the installation position smoothly, correctly and quickly during installation to ensure the stability and effectiveness of the expansion sleeve. The locking mechanism can provide greater friction and tightening force to prevent the structure from loosening due to external force, so as to achieve a fixed connection between the machine part and the shaft. The anti-loosening mechanism can increase the friction to increase the tightening resistance to prevent loosening. Through the arrangement of the adaptation mechanism and the buffer mechanism, the adaptation mechanism can relieve internal stress and strain to ensure smooth expansion of the expansion sleeve, prevent the expansion sleeve and the workpiece from slipping, improve the accuracy of production and processing, and prevent the yield from being reduced. A buffer mechanism is inserted on the upper side of the adaptation mechanism, which can prevent wear caused by installation and locking, has high resilience, can meet the needs of socketing different expansion cores 101, reduces the cost of design and manufacturing, has a simple structure, reliable operation, and is widely used.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A manual locking expansion sleeve mechanism, characterized in that: It includes an expansion sleeve body, the bottom of which is fixedly connected to a bearing mechanism, the bearing mechanism includes a positioning seat and an inner ring fastener, the bottom of the expansion sleeve body is fixedly connected to a positioning seat, the bottom of the positioning seat is clamped with an inner ring fastener, a locking mechanism is fixedly connected inside the bearing mechanism, and an anti-loosening mechanism is fixedly connected to the upper side of the bearing mechanism; An adaption mechanism is fixedly connected inside the expansion sleeve body, and the adaption mechanism includes an expansion core, an adaption hole and an expansion seam. An expansion core is fixedly connected inside the positioning seat, a buffer pad is inserted on the outside of the expansion core, an adaption hole is opened inside the buffer pad, a expansion seam is opened on the outside of the buffer pad, and a buffer mechanism is inserted on the upper side of the adaption mechanism.

2. A manual locking expansion sleeve mechanism according to claim 1, characterized in that: The locking mechanism includes an inner hole, a rotation groove and a hexagonal screw. The bottom of the expansion sleeve body is fixedly connected to a positioning seat, the top of the positioning seat is provided with an inner hole, the inner hole is threadedly connected with a hexagonal screw, and the inner side of the bottom of the positioning seat is provided with a rotation groove.

3. A manual locking expansion sleeve mechanism according to claim 1, characterized in that: The anti-loosening mechanism includes an anti-loosening hole, an anti-loosening ring and an anti-loosening bolt. The bottom of the expansion sleeve body is fixedly connected to a positioning seat, the upper side of the positioning seat is provided with an anti-loosening hole, the inner part of the anti-loosening hole is threadedly connected to an anti-loosening bolt, and one end of the anti-loosening bolt is fixedly connected to the anti-loosening ring.

4. A manual locking expansion sleeve mechanism according to claim 1, characterized in that: The buffer mechanism comprises a buffer groove and a buffer pad. The top of the inner side of the expansion sleeve body is provided with a buffer groove, and the buffer pad is clamped inside the buffer groove.

5. A manual locking expansion sleeve mechanism according to claim 1, characterized in that: The top of the expansion sleeve body is fixedly connected to the upper sleeve body, the bottom of the upper sleeve body is fixedly connected to a threaded interface, a threaded groove is provided inside the positioning seat, the threaded interface is threadedly connected to the threaded groove, a clamping block is fixedly connected to the inner side of the bottom of the positioning seat, and the inner ring fastener is provided with a clamping groove.

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