Tightening device for controlling screwing depth and orientation of workpiece
By combining the lifting and tightening components with the design of proximity switches and displacement gauges, precise control of the locking depth and orientation is achieved, solving the problems of cumbersome and inaccurate manual tightening operations and improving the reliability and accuracy of the tightening device.
Patent Information
- Application Number
- CN202423086742.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In automobile production, it is difficult to precisely control the screwing depth and orientation when manually tightening the latches, resulting in cumbersome operation and low precision.
A tightening device comprising a lifting assembly and a tightening assembly was designed. The device utilizes a proximity switch and a displacement meter to detect the tightening depth and orientation of the latch in real time, and achieves precise control through proximity switch triggering and displacement meter reading calculation.
The operation process has been simplified, the reliability and accuracy of tightening have been improved, the tightening depth is controllable, the angle error is small, and the accuracy requirements of ±0.5mm and ±3° are met.
Smart Images
Figure CN223589318U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tightening device technical field, specifically is a kind of tightening device of control workpiece screwing depth and orientation. BACKGROUND
[0002] In the field of automobile production, various hinge devices are an important branch, which are widely used in the opening and closing of vehicle doors, covers, etc. One of the hinges requires that the depth of the lock catch screwed into the lock box hinge is controllable (target value ±0.5mm), and the lock catch is aligned with the lock box (±3°). When tightening manually, it is necessary to visually check whether the lock catch is aligned with the lock box, and the depth of screwing needs to be measured multiple times, which is very cumbersome. SUMMARY
[0003] In view of the defects of the prior art, the utility model provides a kind of tightening device of control workpiece screwing depth and orientation, which can be applied to occasions where the tightening depth and the orientation of the workpiece after tightening are correctly positioned, and is easy to operate, has high reliability, controllable screwing depth, high precision and small alignment angle error.
[0004] To achieve the above purpose, the utility model provides a kind of tightening device of control workpiece screwing depth and orientation, which includes a lifting assembly and a tightening assembly. The lifting assembly includes a lifting slide. The tightening assembly includes a bracket fixed on the lifting slide, a rotary drive device installed on the bracket, a transition shaft connected to the output shaft of the rotary drive device, a tightening sleeve provided on the transition shaft, two proximity switches fixed on the bracket, a lifting detection platform provided on the transition shaft, and a displacement meter. The measuring head of the displacement meter is in contact with the lifting detection platform, and the two proximity switches are respectively arranged on both sides of the tightening sleeve.
[0005] Further, the lifting assembly includes a rack, and the rack is provided with a longitudinal guide rail. The rack is provided with a lifting drive device, and the lifting drive device is connected to the lifting slide to move the lifting slide along the longitudinal guide rail.
[0006] Further, the bracket includes a connecting plate fixed on the lifting slide, a top plate fixed on the connecting plate, a plurality of connecting columns fixed on the top plate, and a bottom plate fixed on the plurality of connecting columns.
[0007] Further, the rotary drive device is installed on the top plate.
[0008] Further, the two proximity switches are fixed on the bottom plate, and the bottom plate is provided with a through hole. The tightening sleeve passes through the through hole.
[0009] Further, the bottom plate is fixed with a mounting bracket, and the mounting bracket is fixed with a proximity switch.
[0010] Further, the lifting detection platform is connected with the transition shaft through a bearing.
[0011] Further, the tightening sleeve comprises a first end connected with the transition shaft and a second end matched with the workpiece, and the second end is provided with an abutting surface for contacting the workpiece.
[0012] Further, the bearing comprises a first bearing and a second bearing, the upper part of the lifting detection platform is connected with the transition shaft through the first bearing, and the lower part of the lifting detection platform is connected with the transition shaft through the second bearing.
[0013] Further, when the tightening device is used for installing the lock catch on the lock box hinge body, the wires of the two proximity switches are opposite to the center line of the lock box hinge body.
[0014] The tightening device for controlling the tightening depth and orientation of the workpiece is provided with two proximity switches, which are arranged on the two sides of the tightening sleeve respectively. During the tightening, the end of the tightening sleeve is provided with the workpiece to be tightened, and the proximity switches are located on the two sides of the workpiece to be tightened simultaneously. The workpiece to be tightened triggers the proximity switches multiple times during the tightening. The tightening sleeve and the lifting detection platform are connected as a whole, and the measuring head of the displacement meter is always in contact with the lifting detection platform. During the tightening, the upper surface of the tightening sleeve and the workpiece to be tightened are always in contact. Therefore, after the displacement meter is calibrated, the reading of the displacement meter can truly reflect the tightening depth of the workpiece relative to the body after calculation. In the case that the workpiece to be tightened triggers the proximity switch once, if the reading of the displacement meter is within the allowable value range, the tightening is qualified.
[0015] The utility model discloses the beneficial effects that can be applicable to the occasion of controlling the tightening depth and the workpiece after tightening has the correct position orientation requirement, operation is more simple and convenient, reliability is higher, and the tightening depth is controllable, precision is high, and the right angle error is small. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the structure schematic view of the lock chain structure in an embodiment of the utility model;
[0017] Figure 2 It is the side view of the lock chain structure in an embodiment of the utility model;
[0018] Figure 3 It is the plan view of the lock chain structure in an embodiment of the utility model;
[0019] Figure 4 It is the side view of a kind of tightening device for controlling the tightening depth and orientation of workpiece in an embodiment of the utility model;
[0020] Figure 5The utility model discloses a control workpiece screwing depth and towards's structure diagram of tightening device of one embodiment of the utility model,
[0021] Figure 6 The utility model discloses a control workpiece screwing depth and towards's main view of tightening assembly of tightening device of one embodiment of the utility model,
[0022] Figure 7 The utility model discloses a control workpiece screwing depth and towards's partial close -up of transition axle position of tightening device of one embodiment of the utility model,
[0023] Figure 8 The utility model discloses a control workpiece screwing depth and towards's structure diagram of tightening assembly of tightening device of one embodiment of the utility model,
[0024] Figure 9 The utility model discloses a control workpiece screwing depth and towards's structure diagram of tightening sleeve of one embodiment of the utility model,
[0025] In the drawing,
[0026] 100, lifting assembly,
[0027] 110, lifting slide, 120, rack, 130, longitudinal guide rail, 140, lifting drive device,
[0028] 200, tightening assembly,
[0029] 210, support, 211, connecting plate, 212, top plate, 213, connecting column, 214, bottom plate, 2141, through hole, 2142, mounting support,
[0030] 220, rotary drive device,
[0031] 230, transition axle,
[0032] 240, tightening sleeve, 241, first end, 242, second end, 2421, abutment surface,
[0033] 250, proximity switch,
[0034] 260, lifting detection platform,
[0035] 270, displacement meter, 271, measuring head,
[0036] 300, bearing, 310, first bearing, 320, second bearing,
[0037] 10, lock chain structure,
[0038] 11, lock,
[0039] 12, lock box hinge body. DETAILED DESCRIPTION
[0040] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific details set forth herein without departing from the scope of the present application. It is therefore contemplated that the present application is not limited to the specific embodiments disclosed in the following description.
[0041] Referring to Figures 1-3 A lock chain structure 10 includes a lock 11 and a lock box hinge body 12. When assembling, the lock 11 needs to be screwed into the lock box hinge body 12, and the depth of the lock 11 screwed into the lock box hinge body 12 needs to be controlled (target value ± 0.5 mm), and the lock 11 is aligned with the lock box hinge body 12 (± 3°), that is, the lock 11 is parallel to the center line of the lock box hinge body 12.
[0042] Referring to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In an embodiment of the present application, a tightening device for controlling the screwing depth and orientation of a workpiece includes a lifting assembly 100 and a tightening assembly 200. The lifting assembly 100 includes a lifting slide 110, and the tightening assembly 200 is arranged on the lifting slide 110. The lifting slide 110 can drive the tightening assembly 200 to lift. The tightening assembly 200 includes a bracket 210 fixed on the lifting slide 110, a rotary drive device 220 mounted on the bracket 210, a transition shaft 230 connected with an output shaft of the rotary drive device 220, a tightening sleeve 240 arranged on the transition shaft 230, two proximity switches 250 fixed on the bracket 210, a lifting detection platform 260 arranged on the tightening sleeve 240, and a displacement meter 270. A measuring head 271 of the displacement meter 270 is in contact with the lifting detection platform 260, and the two proximity switches 250 are arranged on both sides of the tightening sleeve 240. In a specific arrangement, as an example, the displacement meter 270 is of TR_050 (NOVOTECH) type; and the proximity switch 250 is of IES200 (IFM) type.
[0043] It should be noted that the lifting detection platform 260, the transition shaft 230 and the tightening sleeve 240 are connected as a whole and move synchronously. In a specific arrangement, the output shaft of the rotary driving device 220 and the transition shaft 230 are connected by, but not limited to, a cylindrical pin cooperating with an O-ring. The output shaft of the rotary driving device 220 has a compression stroke (passive compression). When the lifting detection platform 260, the transition shaft 230 and the tightening sleeve 240 as a whole are lowered to a certain height by the lifting assembly 100, the three are compressed when contacting the workpiece. Thus, the reading of the displacement meter 270 contacting the lifting detection platform 260 changes, i.e. the reading of the displacement meter 270 changes with the rotation of the output shaft driving the tightening sleeve 240 and the lowering of the workpiece.
[0044] The above-described tightening device for controlling the tightening depth and orientation of the workpiece is provided with two proximity switches 250 arranged on both sides of the tightening sleeve 240. During tightening, the end of the tightening sleeve 240 is arranged to tighten the workpiece, and the proximity switches 250 are arranged on both sides of the workpiece. The workpiece triggers the proximity switches 250 multiple times during tightening. The tightening sleeve 240 and the lifting detection platform 260 are connected as a whole, and the measuring head 271 of the displacement meter 270 is always in contact with the lifting detection platform 260. During tightening, the upper surface of the workpiece is always in contact with the tightening sleeve 240. Thus, after the displacement meter 270 is calibrated, the reading of the displacement meter 270 after calculation can truly reflect the tightening depth of the workpiece relative to the hinge body 12 of the lock box. In the case of triggering the proximity switch 250 by the workpiece once, if the reading of the displacement meter 270 is within the allowed value range, the tightening is qualified.
[0045] Continuing to refer to Figure 4 and Figure 5 In an embodiment, the lifting assembly 100 includes a rack 120 provided with a longitudinal guide rail 130, and the rack 120 is provided with a lifting driving device 140 connected with the lifting slide 110 to move the lifting slide 110 along the longitudinal guide rail 130.
[0046] In an embodiment, the support 210 includes a connecting plate 211 fixed to the lifting slide 110, a top plate 212 fixed to the connecting plate 211, a plurality of connecting columns 213 fixed to the top plate 212, and a bottom plate 214 fixed to the plurality of connecting columns 213.
[0047] In an embodiment, the rotary driving device 220 is installed on the top plate 212.
[0048] In an embodiment, the two proximity switches 250 are both fixed to the bottom plate 214, and the bottom plate 214 is provided with a through hole 2141 through which the tightening sleeve 240 passes.
[0049] In an embodiment, the bottom plate 214 is fixed with a mounting bracket 2142, and the mounting bracket 2142 is fixed with a proximity switch 250.
[0050] In an embodiment, the lifting detection platform 260 is connected with the transition shaft 230 through a bearing.
[0051] In combination with Figure 9 In an embodiment, the tightening sleeve 240 comprises a first end portion 241 connected with the transition shaft 230 and a second end portion 242 matched with the workpiece, and the second end portion 242 is provided with an abutting surface 2421 for contacting the workpiece. In combination with Figure 7 In the embodiment, the workpiece is a lock catch 11, and the abutting surface 2421 of the second end portion 242 is always in contact with the top of the lock catch 11. Before the displacement meter 270 is calibrated, the reading of the displacement meter 270 after calculation can truly reflect the screwing depth of the lock catch 11 relative to the lock box hinge body 12.
[0052] In an embodiment, the bearing 300 comprises a first bearing 310 and a second bearing 320, and the upper part of the lifting detection platform 260 is connected with the transition shaft 230 through the first bearing 310, and the lower part of the lifting detection platform 260 is connected with the transition shaft 230 through the second bearing 320.
[0053] In an embodiment, when the tightening device is used for installing the lock catch 11 on the lock box hinge body 12, the wires of the two proximity switches 250 are opposite to the center line of the lock box hinge body 12.
[0054] In actual operation, the workpiece is installed on the tooling by hand, and one or two catches of the lock catch 11 are brought by hand, and then the lock catch 11 and the lock box hinge body 12 are roughly perpendicular, and then the start button is pressed. The device detects the screwing depth in real time through the displacement meter 270, i.e. the displacement sensor, and detects whether the lock catch 11 is aligned with the lock box hinge body 12 through a pair of proximity switches 250. When it is detected that the lock catch 11 is aligned with the lock box hinge body 12 and the screwing depth also meets the requirements, it is stopped. Since the thread of the lock catch 11 is M8*0.75, when it is detected that the screwing depth has reached the upper limit of the allowable range, even if the lock catch 11 has not been aligned with the lock box hinge body 12 at this time, it only needs to rotate by 180° at most, so as to ensure that the lock catch 11 is aligned with the lock box hinge body 12, and at this time, the screwing depth is increased by 0.75*0.5=0.375 at most, which is still within the allowable range of ±0.5mm, and is a qualified product.
[0055] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the restriction of the utility model.
[0056] In addition, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0057] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0058] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.
Claims
1. A tightening device for controlling the depth and orientation of a workpiece being screwed, characterized by: The application relates to a tightening device for a lock cylinder hinge body. The tightening device comprises a lifting assembly and a tightening assembly. The lifting assembly comprises a lifting slide.
2. A screwing device for controlling the depth and orientation of a workpiece as claimed in claim 1, characterized in that: The tightening assembly comprises a support fixed on the lifting slide, a rotary driving device installed on the support, a transition shaft connected with an output shaft of the rotary driving device, a tightening sleeve arranged on the transition shaft, two proximity switches fixed on the support, a lifting detection platform arranged on the transition shaft, and a displacement meter, a measuring head of the displacement meter being in contact with the lifting detection platform, and the two proximity switches being arranged on two sides of the tightening sleeve respectively.
3. A control device for controlling the depth and orientation of a workpiece as it is threaded, according to claim 1, wherein: The lifting assembly comprises a rack provided with a longitudinal guide rail, and a lifting driving device connected with the lifting slide to move the lifting slide along the longitudinal guide rail.
4. A screwing device for controlling the depth and orientation of a workpiece as claimed in claim 3, wherein: The support comprises a connecting plate fixed on the lifting slide, a top plate fixed on the connecting plate, a plurality of connecting columns fixed on the top plate, and a bottom plate fixed on the connecting columns.
5. A control device for controlling the depth and orientation of a workpiece as it is threaded, according to claim 3, wherein: The rotary driving device is installed on the top plate.
6. A screwing device for controlling the depth and orientation of a workpiece as claimed in claim 5, wherein: The two proximity switches are both fixed on the bottom plate, and the bottom plate is provided with a through hole through which the tightening sleeve passes.
7. A control device for controlling the depth and orientation of a workpiece as it is threaded, according to any one of claims 1 to 6, wherein: The bottom plate is fixed with a mounting support, and the mounting support is fixed with a proximity switch.
8. A control device for controlling the depth and orientation of a workpiece as it is threaded, according to claim 7, wherein: The lifting detection platform is connected with the transition shaft through a bearing.
9. A control device for controlling the depth and orientation of a workpiece as it is threaded, according to claim 7, wherein: The tightening sleeve comprises a first end part connected with the transition shaft and a second end part matched with a workpiece, and the second end part is provided with an abutting surface for contacting the workpiece.
10. A screwing device for controlling the depth and orientation of a workpiece according to any one of claims 1-6, characterized in that: The bearing comprises a first bearing and a second bearing, and the upper part of the lifting detection platform is connected with the transition shaft through the first bearing, and the lower part of the lifting detection platform is connected with the transition shaft through the second bearing. When the tightening device is used for installing a lock catch on the lock cylinder hinge body, the wires of the two proximity switches are opposite to the center line of the lock cylinder hinge body.