Floating sleeve mechanism and tightening tool

Abstract

The utility model discloses a kind of floating sleeve mechanism and tightening tool, it is related to tightening tool technical field, wherein, floating sleeve mechanism, including: floating block;Floating sleeve, it is installed along X axis relative motion with the floating block by first guide structure;End sleeve, it is installed along Z axis relative motion with the floating sleeve by second guide structure;Limiting piece, it is installed along Y axis relative motion with the floating block, and elastic member is provided between the limiting piece and the floating block;Wherein, the contact surface that limiting piece is provided with and the floating sleeve and the end sleeve contact, when the floating sleeve and the floating block relative motion, or the end sleeve and the floating sleeve relative motion, the floating sleeve or the end sleeve can be driven the limiting piece along Y axis motion by the contact surface, and make the elastic member deformation energy storage;This floating sleeve mechanism and tightening tool can satisfy end sleeve and workpiece follow-up operation.

Description

Technical Field

[0001] This utility model relates to the field of tightening tool technology, and more specifically, to a floating sleeve mechanism. Furthermore, this utility model also relates to a tightening tool including the aforementioned floating sleeve mechanism. Background Technology

[0002] With the continuous development and innovation of technology, assembly processes are gradually seeking to move from manual assembly to automated machine assembly. This is also true in the automotive assembly field, especially in the screw tightening station of the production line.

[0003] During tightening operations, the tightening gun sleeve is required to be relatively stationary with respect to the bolt or nut to be tightened. However, in practical applications, it has been found that during assembly line production, the feed speed of the assembly line or the feed speed of the workpiece on it is not constant and there is a certain speed fluctuation. Moreover, this fluctuation is somewhat unpredictable, causing a difference between the speed of the matching tightening fixture and the speed of the workpiece to be processed on the assembly line. That is, there is a speed difference between the tightening gun sleeve and the nut or bolt to be tightened, which can easily cause the tightening gun sleeve to detach from the nut or bolt to be tightened, affecting the final tightening effect, and in severe cases, damaging the tightening gun.

[0004] In summary, how to solve the problem of inconsistent speed between the tightening gun sleeve and the workpiece to be tightened caused by fluctuations in the production line speed is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a floating sleeve mechanism, which, through the floating installation of the floating block and the floating sleeve, and the floating sleeve and the end sleeve in two directions, satisfies the small range of relative movement between the end sleeve and the tightening tool, avoids the end sleeve from detaching from the workpiece to be processed, and ensures the final tightening effect.

[0006] Another objective of this invention is to provide a tightening tool that includes the above-mentioned floating sleeve mechanism, has the same technical features, and can solve the same technical problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A floating sleeve mechanism, characterized in that it comprises:

[0009] A floating block that can receive power input from the operating mechanism to rotate around the Y-axis;

[0010] A floating sleeve is mounted relative to the floating block along the X-axis via a first guide structure;

[0011] An end sleeve is mounted relative to the floating sleeve along the Z-axis via a second guide structure.

[0012] A limiting member is installed relative to the floating block along the Y-axis, and an elastic member is provided between the limiting member and the floating block;

[0013] The limiting member is provided with a contact surface that contacts the floating sleeve and the end sleeve. When the floating sleeve moves relative to the floating block, or the end sleeve moves relative to the floating sleeve, the floating sleeve or the end sleeve can drive the limiting member to move along the Y-axis through the contact surface, and cause the elastic member to deform and store energy.

[0014] The X-axis and Z-axis have a non-zero angle between them, and both are perpendicular to the Y-axis.

[0015] Preferably, the limiting member includes a tapered surface;

[0016] The floating sleeve has a through hole at its center, and the inner wall of the through hole abuts against the conical surface;

[0017] The end sleeve has a blind hole or a through hole at its center, and the inner wall of the blind hole or through hole abuts against the tapered surface.

[0018] Preferably, the floating block has an inner cavity, and the limiting member is movably disposed within the inner cavity.

[0019] Preferably, the inner cavity is provided with an elastic element fixing seat that can move along the Y-axis for installing and adjusting the initial deformation of the elastic element.

[0020] Preferably, the floating block is provided with a mounting hole and a radial hole perpendicular to the mounting hole;

[0021] An extension rod or a power transmission part of an operating mechanism can be inserted into the mounting hole, and a locking screw that inhibits the relative movement of the extension rod or power transmission part and the floating block in the Y direction can be inserted into the radial hole.

[0022] Preferably, the mounting hole communicates with the inner cavity, and the extension rod or the power transmission part passes through the mounting hole along the Y-axis and abuts against the elastic element fixing seat.

[0023] Preferably, the elastic element fixing seat is a disc-shaped structure. When the limiting member moves along the Y-axis for a preset stroke, the end of the limiting member abuts against the elastic element fixing seat to limit the maximum displacement of the limiting member along the Y-axis.

[0024] Preferably, the end sleeve includes a floating part and a sleeve connecting part that are coaxially fixed;

[0025] The floating part is mounted to the floating sleeve along the Z-axis via the second guide structure;

[0026] The sleeve connection part is used to install the sleeve.

[0027] A tightening tool includes the floating sleeve mechanism described in any one of the above, wherein the power transmission part of the power tool can be directly or fixedly connected to the floating block via an extension rod.

[0028] The floating sleeve mechanism provided by this utility model has at least the following advantages compared with the prior art:

[0029] 1. The floating block and floating sleeve are installed along the X-axis, and the floating sleeve and end sleeve are installed along the Z-axis. Through the combination of the X-axis and Z-axis, the end sleeve can float relative to the floating block in the XZ plane, which satisfies the relative movement between the workpiece to be processed and the tightening tool, and avoids the two from separating due to feed speed fluctuations. Then, through the continuous rotation of the floating block, the end sleeve drives the continuous power output to the workpiece, ensuring the final tightening effect.

[0030] 2. When the floating block and floating sleeve are floating, they drive the limiting component to move along the Y direction and cause the elastic component to deform, accumulating elastic potential energy. When this elastic potential energy is released, it can drive the floating block and floating sleeve to reset autonomously, improving the overall ease of use of the equipment.

[0031] The tightening tool provided by this utility model includes the above-mentioned floating sleeve mechanism and has the same beneficial effects. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the floating sleeve mechanism provided by this utility model;

[0034] Figure 2 This is a front view of the floating sleeve mechanism provided by this utility model;

[0035] Figure 3 Exploded view of the floating sleeve mechanism provided by this utility model;

[0036] Figure 4 Provided by this utility model Figure 2 Sectional view at point AA;

[0037] Figure 5 Provided by this utility model Figure 4 Sectional view at point BB.

[0038] In the picture:

[0039] 1. End sleeve; 2. Floating sleeve; 3. Floating block; 4. Limiting component; 5. Elastic component; 6. Elastic component fixing seat; 7. Extension rod; 71. Locking screw. Detailed Implementation

[0040] 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.

[0041] The core of this utility model is to provide a floating sleeve mechanism, which allows for floating installation in two directions between the floating block and the floating sleeve, and between the floating sleeve and the end sleeve, to satisfy the small-range relative movement between the end sleeve and the tightening tool, thereby preventing the end sleeve from detaching from the workpiece and ensuring the final tightening effect.

[0042] Another core aspect of this utility model is to provide a tightening tool that includes the above-mentioned floating sleeve mechanism, which has the same technical features and can solve the same technical problems.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3 A floating sleeve mechanism, comprising:

[0044] Floating block 3 is able to receive power input from the operating mechanism to rotate around the Y-axis;

[0045] The floating sleeve 2 is installed relative to the floating block 3 along the X-axis via the first guide structure;

[0046] End sleeve 1 is installed relative to floating sleeve 2 along the Z-axis via a second guide structure;

[0047] The limiting member 4 is installed relative to the floating block 3 along the Y-axis, and an elastic member 5 is provided between the limiting member 4 and the floating block 3;

[0048] The limiting member 4 is provided with a contact surface that contacts the floating sleeve 2 and the end sleeve 1. When the floating sleeve 2 moves relative to the floating block 3, or when the end sleeve 1 moves relative to the floating sleeve 2, the floating sleeve 2 or the end sleeve 1 can drive the limiting member 4 to move along the Y-axis through the contact surface, and cause the elastic member 5 to deform and store energy.

[0049] The X-axis and Z-axis have a non-zero angle between them, and both are perpendicular to the Y-axis.

[0050] In practical use, the X-axis and Z-axis are coplanar and have a non-zero included angle, with the X-axis preferably perpendicular to the Z-axis.

[0051] like Figure 1 , Figure 2 and Figure 3 As shown, the end sleeve 1 can move relative to the floating sleeve 2 along the Z-axis, while the floating sleeve 2 can move relative to the floating block 3 along the X-axis. Since the Z-axis and X-axis are not parallel, the end sleeve 1 can move relative to the floating block 3 in the XZ plane by combining the above two directions of movement.

[0052] In actual use, the floating block 3 is connected to the operating mechanism, and the operating mechanism drives the floating block 3 to rotate. In turn, the power is transmitted through the floating sleeve 2, which drives the end sleeve 1 to rotate, thus completing the tightening operation of the nut or bolt connected to the end sleeve 1.

[0053] Meanwhile, a limiting member 4 that moves along the Y-axis is provided inside the floating block 3. There are contacting inclined surfaces or conical surfaces between the limiting member 4, the floating sleeve 2, and the end sleeve 1. When the floating sleeve 2 and / or the end sleeve 1 move, they will transmit force to the limiting member 4 through the contacting inclined surfaces or conical surfaces, forcing the limiting member 4 to move along the Y direction. During the process, the elastic member 5 will deform and store energy. When the force that causes the floating sleeve 2 and / or the end sleeve 1 to move disappears or weakens to less than the elastic force of the elastic member 5, the elastic member 5 releases its own elastic potential energy, causing the limiting member 4 to reset. During the process, the force is transmitted through the contacting inclined surfaces or conical surfaces, causing the floating sleeve 2 and / or the end sleeve 1 to reset, so that the floating sleeve 2 and / or the end sleeve 1 returns to the initial position and maintains the coaxiality of the two with the floating block 3.

[0054] Moreover, in practical applications, even if the end sleeve 1 or the floating sleeve 2 moves relative to the floating block 3, it does not affect the transmission of the rotational movement of the floating block 3 toward the end sleeve 1, thus meeting the requirements of the end sleeve 1 for tightening the workpiece. In other words, it can realize the follow-up operation of the tightening fixture and the workpiece during assembly line assembly.

[0055] In some embodiments, the limiting member 4 includes a tapered surface;

[0056] The floating sleeve 2 has a through hole at its center, and the inner wall of the through hole abuts against the tapered surface;

[0057] The end sleeve 1 has a blind hole or through hole at its center, and the inner wall of the blind hole or through hole abuts against the conical surface.

[0058] like Figure 3As shown, one end of the limiting member 4 adopts a conical structure. The floating sleeve 2 and the end sleeve 1 simultaneously contact the conical surface at the end of the limiting member 4. When one of the floating sleeve 2 and the end sleeve 1 deviates from its original axis, the force can be transmitted through the conical surface to compress the limiting member 4 to move along the Y-axis. At this time, the floating sleeve 2 or the end sleeve 1, which has not deviated from its original axis, will separate from the limiting member 4. At this time, it is unrestrained and can move freely in the preset direction, thus achieving the floating effect.

[0059] In some embodiments, the axis of the conical surface is collinear with the axis of the floating block 3. In this case, in the initial state, the floating block 3, the floating sleeve 2 and the end sleeve 1 are all arranged coaxially. When the floating sleeve 2 or the end sleeve 1 is subjected to force, it will move away from its original axis. When the external force disappears, it will automatically return to its original axis position.

[0060] In some embodiments, the contact surface between the limiting member 4 and the floating sleeve 2 and / or the end sleeve 1 is a wedge-shaped surface or an arc-shaped surface. Through the conduction of the wedge-shaped surface or the arc-shaped surface, the X-axis movement of the floating sleeve 2 or the Z-axis movement of the end sleeve 1 can be converted into the Y-axis movement of the limiting member 4, thereby driving the elastic member 5 to deform and store energy.

[0061] In some embodiments, the floating block 3 is provided with an inner cavity, and the limiting member 4 is movably disposed within the inner cavity.

[0062] like Figure 4 and Figure 5 As shown, an inner cavity is set at the axial position of the floating block 3, and the limiting member 4 is set in the inner cavity, so that the floating block 3 can move along the Y axis in the inner cavity, that is, move along the Y axis relative to the floating block 3. With the help of the outer wall of the inner cavity, interference from the outside world is avoided on the movement of the limiting member 4.

[0063] In some embodiments, an elastic element fixing seat 6 capable of moving along the Y-axis is provided inside the cavity for installing and adjusting the initial deformation of the elastic element 5.

[0064] like Figure 4 and Figure 5 As shown, an elastic element fixing seat 6 is provided in the inner cavity of the floating block 3, and the two ends of the elastic element 5 abut against the limiting member 4 and the elastic element fixing seat 6 respectively. By changing the position of the elastic element fixing seat 6 in the Y direction, the initial deformation of the elastic element 5 can be changed, that is, the initial force required for the movement of the limiting member 4 can be changed, that is, the initial force required for the floating sleeve 2 or the end sleeve 1 to float can be changed.

[0065] In some embodiments, the floating block 3 is provided with a mounting hole and a radial hole for the vertical mounting hole;

[0066] The extension rod 7 or the power transmission part of the operating mechanism can be inserted into the mounting hole, and the locking screw 71 that inhibits the relative movement of the extension rod 7 or the power transmission part and the floating block 3 along the Y-axis can be inserted into the radial hole.

[0067] like Figure 4 and Figure 5 As shown, a mounting hole is provided at one end of the floating block 3, which is used for the power transmission part of the operating mechanism to directly connect the power output or to transmit power by adding an extension rod 7, so as to realize the power connection between the floating sleeve mechanism and the operating mechanism.

[0068] In some embodiments, the mounting hole communicates with the inner cavity, and the extension rod 7 or the power transmission part passes through the mounting hole along the Y-axis and abuts against the elastic element fixing seat 6.

[0069] like Figure 4 As shown, by changing the length of the extension rod 7 or the power transmission part of the operating mechanism inserted into the mounting hole, the Y-axis position of the elastic element fixing seat 6 can be changed, that is, the initial force required for the floating sleeve 2 or the end sleeve 1 to float can be changed.

[0070] In some embodiments, the elastic element fixing seat 6 is a disc-shaped structure. When the limiting member 4 moves along the Y-axis for a preset stroke, the end of the limiting member 4 abuts against the elastic element fixing seat 6 to limit the maximum displacement of the limiting member 4 in the Y-axis.

[0071] like Figure 4 and Figure 5 As shown, the elastic element fixing seat 6 with a disc-shaped structure, after the limiting member 4 moves along the Y-axis for a preset stroke, the limiting member 4 abuts against the elastic element fixing seat 6. At this time, the limiting member 4 will not be able to continue to move. The limiting member 4 limits the floating sleeve 2 or the end sleeve 1 through the contacting inclined surface or cone surface. That is, at this time, the floating sleeve 2 and the end sleeve 1 reach the maximum stroke position, preventing the floating sleeve 2 or the end sleeve 1 from continuing to move and disengaging from the floating block 3.

[0072] In some embodiments, the end sleeve 1 includes a floating part and a sleeve connecting part that are coaxially fixed;

[0073] The floating part is installed relative to the floating sleeve 2 along the Z direction via a guide assembly;

[0074] The sleeve connection part is used to install the sleeve.

[0075] The end sleeve 1 adopts a modular design, wherein the sleeve connection part can be connected with sleeves of different specifications to increase the applicability of the floating sleeve mechanism;

[0076] The floating part is used to connect with the floating sleeve 2 to ensure the stability of the motion relationship between the end sleeve 1 and the floating sleeve 2.

[0077] In addition to the floating sleeve mechanism disclosed in the above embodiments, the present invention also provides a tightening tool including the above floating sleeve mechanism. The tightening tool includes the floating sleeve mechanism of any one of the above, and the power transmission part of the power tool can be directly or fixedly connected to the floating block 3 through the extension rod 7.

[0078] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0079] The floating sleeve mechanism and tightening tool provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A floating sleeve mechanism, characterized in that, include: The floating block (3) can obtain the power input of the operating mechanism to rotate around the Y-axis; The floating sleeve (2) is installed relative to the floating block (3) along the X-axis via a first guide structure; The end sleeve (1) is installed relative to the floating sleeve (2) along the Z-axis via a second guide structure; A limiting member (4) is installed relative to the floating block (3) along the Y-axis, and an elastic member (5) is provided between the limiting member (4) and the floating block (3). The limiting member (4) is provided with a contact surface that contacts the floating sleeve (2) and the end sleeve (1). When the floating sleeve (2) moves relative to the floating block (3), or the end sleeve (1) moves relative to the floating sleeve (2), the floating sleeve (2) or the end sleeve (1) can drive the limiting member (4) to move along the Y-axis through the contact surface, and cause the elastic member (5) to deform and store energy. The X-axis and Z-axis have a non-zero angle between them, and both are perpendicular to the Y-axis.

2. The floating sleeve mechanism according to claim 1, characterized in that, The limiting member (4) includes a tapered surface; The floating sleeve (2) has a through hole at its center, and the inner wall of the through hole abuts against the conical surface; The end sleeve (1) has a blind hole or through hole at its center, and the inner wall of the blind hole or through hole abuts against the conical surface.

3. The floating sleeve mechanism according to claim 1, characterized in that, The floating block (3) has an inner cavity, and the limiting member (4) is movably disposed within the inner cavity.

4. The floating sleeve mechanism according to claim 3, characterized in that, The inner cavity is provided with an elastic element fixing seat (6) that can move along the Y-axis, which is used to install and adjust the initial deformation of the elastic element (5).

5. The floating sleeve mechanism according to claim 4, characterized in that, The floating block (3) is provided with a mounting hole and a radial hole perpendicular to the mounting hole; An extension rod (7) or a power transmission part of an operating mechanism can be inserted into the mounting hole, and a locking screw (71) that inhibits the relative movement of the extension rod (7) or the power transmission part and the floating block (3) in the Y direction can be inserted into the radial hole.

6. The floating sleeve mechanism according to claim 5, characterized in that, The mounting hole connects to the inner cavity. After the extension rod (7) or the power transmission part passes through the mounting hole along the Y-axis, it abuts against the elastic element fixing seat (6).

7. The floating sleeve mechanism according to claim 4, characterized in that, The elastic element fixing seat (6) has a disc-shaped structure. When the limiting member (4) moves along the Y-axis for a preset stroke, the end of the limiting member (4) abuts against the elastic element fixing seat (6) to limit the maximum displacement of the limiting member (4) along the Y-axis.

8. The floating sleeve mechanism according to claim 1, characterized in that, The end sleeve (1) includes a floating part and a sleeve connecting part that are fixed coaxially; The floating part is installed relative to the floating sleeve (2) along the Z-axis via the second guide structure; The sleeve connection part is used to install the sleeve.

9. A tightening tool, characterized in that, Including the floating sleeve mechanism according to any one of claims 1-7, the power transmission part of the power tool can be directly or through the extension rod (7) fixedly connected to the floating block (3).

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