Press fitting equipment

Abstract

The utility model relates to the technical field of automobile parts, and provides press-fitting equipment, which is used for press-fitting a target part into an end hole of a target workpiece, and comprises a positioning clamp, a press-fitting device, a press-fitting device and a press-fitting device, the pressing head assembly is connected with the pressing driving mechanism; in the press-fitting state, the clamping force applied to the target workpiece by the clamping mechanism is larger than the friction force between the target part and the target workpiece and smaller than the press-fitting force applied to the target part by the driving mechanism. And the displacement sensor is connected with the target workpiece, and the detection direction of the displacement sensor is the same as the driving direction of the press-fitting driving mechanism. According to the press-fitting equipment, the target part can be accurately pressed into the end hole of the target workpiece, the position relation between the target part and the end hole of the target workpiece in the press-fitting direction can be accurately detected, it is guaranteed that press-fitting is in place, and the target part and the target workpiece are prevented from being damaged due to excessive press-fitting.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to press-fitting equipment. Background Art

[0002] There are various fitting relationships between automobile parts, a typical of which is to press-fit one part into an end hole (i.e., an inner hole opened in the end face) of another part.

[0003] For example, in an integrated brake control (IBC) system, a plastic bracket needs to be pressed into the end hole of the piston to fix the magnet.

[0004] The current press-fitting technology usually uses a cylinder to press-fit a first component such as a bracket into an end hole of a second component such as a piston. The cylinder has a fixed stroke or the stroke of the cylinder is detected by a sensor. The problems are: since the press-fitting part is not visible and the dimensional tolerances of the first and second components are difficult to guarantee, it is impossible to determine whether the first component is press-fitted into place; if the stroke of the cylinder is increased to ensure that it is press-fitted into place, it is easy to cause excessive press-fitting and damage the first component / second component.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] In view of this, the utility model provides a pressing device that can accurately press-fit the target part into the end hole of the target workpiece, and accurately detect the positional relationship between the target part and the end hole of the target workpiece in the pressing direction, thereby ensuring that the pressing is in place and avoiding damage to the target part and the target workpiece due to excessive pressing.

[0007] According to one aspect of the present invention, a press-fitting device is provided for press-fitting a target part into an end hole of a target workpiece, the press-fitting device comprising: a positioning fixture comprising a support seat for a gap through which the target workpiece passes and a clamping mechanism for clamping the target workpiece; a press-fitting drive mechanism and a press head assembly connected to the press-fitting drive mechanism; wherein, in the press-fitting state, the clamping force applied to the target workpiece by the clamping mechanism is greater than the friction force between the target part and the target workpiece, and is less than the press-fitting force applied to the target part by the press-fitting drive mechanism; a displacement sensor connected to the target workpiece, the detection direction of the displacement sensor being the same as the driving direction of the press-fitting drive mechanism.

[0008] The target workpiece is placed through the gap of the support seat of the positioning fixture to support the target workpiece and prevent it from shaking during the press-fitting process, which may affect the assembly accuracy. The target workpiece is clamped by the clamping mechanism of the positioning fixture to prevent the target workpiece from being moved by force during the press-fitting process, which may affect the assembly completion. The press-fitting drive mechanism is connected to the press head assembly to realize the press-fitting of the target part. During the press-fitting state, the clamping force applied by the clamping mechanism to the target workpiece is greater than the friction between the target part and the target workpiece and less than the press-fitting force applied by the press-fitting drive mechanism to the target part. This ensures that the target workpiece remains stationary under the action of the clamping mechanism during the press-fitting process. When the target part is press-fitted into place (i.e., the target part has been pressed to the bottom of the end hole of the target workpiece), if the press-fitting drive mechanism continues to apply force, the target workpiece will move in the press-fitting direction. Furthermore, a displacement sensor with the same detection direction as the drive direction of the press-fitting drive mechanism is used to accurately detect the amount of movement of the target workpiece in the press-fitting direction to determine whether the target part is press-fitted into place or whether it is over-pressed.

[0009] Therefore, the press-fitting equipment of the present invention, through the cooperation of the positioning fixture, the press-fitting drive mechanism, the press head assembly, the displacement sensor and other components, can accurately press-fit the target part into the end hole of the target workpiece, and accurately detect the positional relationship between the target part and the end hole of the target workpiece in the pressing direction. In this way, when the press-fitting part is not visible and there is no need to touch the press-fitting part, the press-fitting process can be accurately controlled to ensure that the press-fitting is in place and avoid excessive press-fitting and damage to the target part and the target workpiece.

[0010] In some embodiments, the ram assembly includes: a ram, a first end of which is connected to the press-fitting drive mechanism and a second end is connected to the target part; an elastic stripping unit, which is connected to the first end of the ram; in the press-fitting state, as the ram moves, the elastic stripping unit presses against the support seat; when the press-fitting is completed, the elastic stripping unit drives the ram to separate from the target part; wherein, when the press-fitting is completed, the mating force between the ram and the target part is less than the friction force between the target part and the target workpiece.

[0011] Through the elastic stripping unit and the design that the matching force between the pressing head and the target part is smaller than the friction force between the target part and the target workpiece, the pressing head and the target part can be smoothly separated after the pressing is completed.

[0012] In some embodiments, the elastic stripping unit includes a support plate that can be movably mounted on the pressure head and an elastic unit connecting the support plate and the first end of the pressure head; wherein, the opposite ends of the support plate are respectively connected to the elastic unit.

[0013] Through the support plate and the elastic unit, the pressing head is driven to separate from the target part after the pressing is completed.

[0014] In some embodiments, the support plate has an annular guide portion; in the natural state, the annular guide portion is gap-mounted on the second end of the pressing head and is gap-matched with the target part; in the press-fit state, the annular guide portion extends into the through hole of the support seat, wherein the support seat is mounted on the end of the target workpiece.

[0015] The pressure head is sleeved in the gap of the annular guide part to avoid affecting the downward pressing movement of the pressure head; the annular guide part is matched with the gap of the target part, and extends into the through hole of the support seat in the press-fitting state, which can guide and support the downward pressing movement of the target part, avoid the target part from shaking and affecting the accuracy of the assembly, and does not affect the downward pressing movement of the target part, thereby achieving a smooth guiding press-fitting process.

[0016] In some embodiments, the clamping mechanism clamps the target workpiece via closable jaws.

[0017] Through the closable clamping jaws, the clamping force applied to the target workpiece by the clamping mechanism is adjusted so that the clamping force is greater than the friction between the target part and the target workpiece, ensuring that the target workpiece does not move during the press-fitting process, and the clamping force is less than the press-fitting force applied to the target part by the press-fitting drive mechanism, ensuring that the target workpiece moves under the action of the press-fitting force after the press-fitting is in place, so as to facilitate detection by the displacement sensor.

[0018] In some embodiments, the positioning fixture is connected to a moving drive mechanism, and a driving direction of the moving drive mechanism is the same as a driving direction of the press-fitting drive mechanism.

[0019] By moving the drive mechanism, the position of the positioning fixture can be easily adjusted so that the positioning fixture can position and clamp the end of the target workpiece to achieve stable support for the press-fitting part.

[0020] In some embodiments, the movement drive mechanism and the press-fitting drive mechanism are both mounted on an equipment frame.

[0021] In this way, the mobile drive mechanism and the press-fit drive mechanism are stably installed, thereby achieving stable support for the target workpiece and driving the target part to stably run and press-fit.

[0022] In some embodiments, the press-fitting device further includes: a supporting cylinder coaxially connected to the target workpiece, and the displacement sensor is connected to the supporting cylinder.

[0023] The displacement of the target workpiece along the press-fitting direction is transmitted through the supporting cylinder so that the displacement sensor can detect it.

[0024] In some embodiments, the target workpiece is a piston of an integrated brake control system, and the target part is a bracket for assembling a magnet of the piston.

[0025] In this way, through the pressing equipment of the utility model, the magnet assembly bracket can be accurately pressed into the end hole of the piston, and the positional relationship between the magnet assembly bracket and the end hole of the piston in the pressing direction can be accurately detected, which not only ensures that the pressing is in place, but also avoids excessive pressing and damaging the magnet assembly bracket and the piston, thereby ensuring the working performance of the integrated braking control system.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least:

[0027] The press-fitting equipment of the present invention realizes accurate press-fitting of the target part into the end hole of the target workpiece through the cooperation of the positioning fixture, the press-fitting drive mechanism, the press head assembly, the displacement sensor and other components, and accurately detects the positional relationship between the target part and the end hole of the target workpiece in the press-fitting direction. In this way, when the press-fitting part is not visible and there is no need to touch the press-fitting part, the press-fitting process is accurately controlled, which not only ensures that the press-fitting is in place, but also avoids damage to the target part and the target workpiece due to excessive press-fitting.

[0028] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0030] Figure 1 A schematic diagram showing the overall structure of the press-fitting device in an embodiment of the present utility model is shown;

[0031] Figure 2 A partial enlarged structural diagram of the press-fitting device in an embodiment of the present utility model is shown;

[0032] Figure 3 A schematic structural diagram showing the end holes of a target part and a target workpiece being pressed into place in an embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram of a pressing head of a pressing device in an embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0035] The accompanying drawings are only schematic diagrams of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and their repeated description will be omitted.

[0036] The terms "first," "second," and similar terms used in the specific description do not indicate any order, quantity, or importance, but are simply used to distinguish different components. Terms such as "upper," "lower," "front," and "reverse" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are intended solely for ease of description and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, when a device is said to be "connected" to another device, this includes not only direct connections but also indirect connections through other components.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0038] Figure 1 The overall structure of the press equipment is shown in the figure. Figure 2 The diagram shows the partially enlarged structure of the press-fitting equipment. Figure 3 It shows the structure of the target part and the end hole of the target workpiece being pressed into place; Figures 1 to 3 As shown, the press-fitting device provided by the embodiment of the present invention is used to press-fit the target part 11 into the end hole 120 of the target workpiece 12. The press-fitting device includes:

[0039] The positioning fixture 20 includes a support base 21 for the target workpiece 12 to pass through and a clamping mechanism 22 for clamping the target workpiece 12;

[0040] A press-fitting drive mechanism 30 and a press head assembly 40 connected to the press-fitting drive mechanism 30;

[0041] In the press-fitting state, the clamping force applied by the clamping mechanism 22 to the target workpiece 12 is greater than the friction force between the target part 11 and the target workpiece 12, and is less than the press-fitting force applied by the press-fitting drive mechanism 30 to the target part 11;

[0042] The displacement sensor 50 is connected to the target workpiece 12 , and the detection direction of the displacement sensor 50 is the same as the driving direction of the press-fitting driving mechanism 30 .

[0043] The target workpiece 12 is sleeved through the gap of the support seat 21 of the positioning fixture 20 to support the target workpiece 12 and prevent the target workpiece 12 from shaking during the press-fitting process and affecting the assembly accuracy. The support seat 21 can be sleeved on the end of the target workpiece 12 to support the press-fitting part. The target workpiece 12 is clamped by the clamping mechanism 22 of the positioning fixture 20 to prevent the target workpiece 12 from being moved by force during the press-fitting process and affecting the assembly completion. The clamping mechanism 22 can clamp the end of the target workpiece 12 to achieve positioning and clamping of the press-fitting part. The press-fitting drive mechanism 30 is connected to the press head assembly 40 for realizing press-fitting of the target part 11. During the press-fitting state, the clamping force applied by the clamping mechanism 22 to the target workpiece 12 is greater than the friction between the target part 11 and the target workpiece 12 and less than the press-fitting force applied by the press-fitting drive mechanism 30 to the target part 11. This ensures that the target workpiece 12 remains stationary under the action of the clamping mechanism 22 during the press-fitting process. When the target part 11 is press-fitted into place (i.e., the target part 11 has been pressed to the bottom 120' of the end hole 120 of the target workpiece 12), if the press-fitting drive mechanism 30 continues to apply force, the target workpiece 12 moves in the press-fitting direction "Z". Furthermore, the displacement sensor 50, whose detection direction is the same as the drive direction of the press-fitting drive mechanism 30 (the drive direction of the press-fitting drive mechanism 30 and the detection direction of the displacement sensor 50 are both along the press-fitting direction "Z"), accurately detects the movement of the target workpiece 12 in the press-fitting direction "Z" to determine whether the target part 11 is press-fitted into place or whether it is over-pressed.

[0044] Specifically, if target part 11 is not press-fitted into place, target workpiece 12 is not moving, and displacement sensor 50 cannot detect a valid value. Once displacement sensor 50 detects a value, indicating that target workpiece 12 has slightly moved, i.e., target part 11 has been press-fitted into place, press-fit drive mechanism 30 must immediately cease applying the press-fitting force, otherwise over-pressing will occur. By adjusting the detection accuracy of displacement sensor 50, for example, to a detection accuracy of 0.1 mm or less, the press-fitting accuracy between target part 11 and target workpiece 12 can be effectively controlled, achieving precise control of the press-fitting process.

[0045] The displacement sensor 50 may be a suitable displacement sensor such as a linear variable differential transformer (LVDT) or the like.

[0046] Therefore, the pressing equipment of the present invention, through the cooperation of the positioning fixture 20, the pressing drive mechanism 30, the pressing head assembly 40, the displacement sensor 50 and other components, can accurately press the target part 11 into the end hole 120 of the target workpiece 12, and accurately detect the positional relationship between the target part 11 and the end hole 120 of the target workpiece 12 in the pressing direction "Z". In this way, when the pressing part is not visible and there is no need to touch the pressing part, the pressing process can be accurately controlled to ensure that the pressing is in place and avoid excessive pressing to damage the target part 11 and the target workpiece 12.

[0047] Figure 4 The structure of the pressing head of the pressing equipment is schematically shown; combined with Figures 1 to 4 As shown, in some embodiments, the ram assembly 40 includes: a ram 41, the first end 41a of the ram 41 is connected to the press-fitting drive mechanism 30, and the second end 41b is connected to the target part 11; an elastic stripping unit 42, connected to the first end 41a of the ram 41; in the press-fitting state, as the ram 41 moves, the elastic stripping unit 42 presses against the support seat 21; when the press-fitting is completed, the elastic stripping unit 42 drives the ram 41 to separate from the target part 11; wherein, when the press-fitting is completed, the fitting force between the ram 41 and the target part 11 is less than the friction force between the target part 11 and the target workpiece 12.

[0048] By means of the elastic stripping unit 42 and the design that the matching force between the ram 41 and the target part 11 is smaller than the friction force between the target part 11 and the target workpiece 12, the ram 41 can be smoothly separated from the target part 11 after the press-fitting is completed. Specifically, in the press-fitting state, the press-fitting drive mechanism 30 drives the ram assembly 40 in the forward direction, driving the target part 11 to be press-fitted into the end hole 120 of the target workpiece 12. As the ram assembly 40 moves downward, the elastic stripping unit 42 presses against the support seat 21, undergoes elastic deformation and accumulates force. After the press-fitting is completed, the press-fitting drive mechanism 30 stops driving or reversely drives the ram assembly 40. At this time, the elastic stripping unit 42 resets. Since the matching force between the ram 41 and the target part 11 is smaller than the friction force between the target part 11 and the target workpiece 12, the elastic force of the elastic stripping unit 42 drives the ram 41 to smoothly separate from the target part 11.

[0049] In addition, the elastic stripping unit 42 can also buffer the downward pressing movement of the pressing head 41 when the pressing is about to be completed, so that the pressing can be completed smoothly and stably, and excessive pressing can be avoided.

[0050] In some embodiments, the elastic stripping unit 42 includes a support plate 421 that can be movably mounted on the pressure head 41 and an elastic unit 422 connecting the support plate 421 and the first end 41a of the pressure head 41; wherein, the opposite ends of the support plate 421 are respectively connected to the elastic unit 422.

[0051] The support plate 421 and the elastic unit 422 are used to drive the pressing head 41 away from the target part 11 after the press-fitting is completed. The elastic unit 422 can be a spring, but is not limited thereto.

[0052] In some embodiments, the support plate 421 has an annular guide portion 423; in the natural state, the annular guide portion 423 is gap-mounted on the second end 41b of the pressing head 41 and is gap-fitted with the target part 11; in the press-fit state, the annular guide portion 423 extends into the through hole 210 of the support seat 21, wherein the support seat 21 is mounted on the end of the target workpiece 12.

[0053] The annular guide portion 423 is gap-mounted on the pressing head 41 to avoid affecting the downward pressing movement of the pressing head 41; the annular guide portion 423 is gap-matched with the target part 11, and extends into the through hole 210 of the support seat 21 in the press-fit state, which can guide and support the downward pressing movement of the target part 11, avoid the target part 11 from shaking and affecting the assembly accuracy, and does not affect the downward pressing movement of the target part 11, thereby achieving a smooth guiding press-fitting process.

[0054] In some embodiments, the clamping mechanism 22 clamps the target workpiece 12 via closable jaws 220 .

[0055] Through the closable clamping claws 220, the clamping force applied by the clamping mechanism 22 to the target workpiece 12 is adjusted so that the clamping force is greater than the friction force between the target part 11 and the target workpiece 12, ensuring that the target workpiece 12 does not move during the press-fitting process, and the clamping force is less than the press-fitting force applied by the press-fitting drive mechanism 30 to the target part 11, ensuring that the target workpiece 12 moves under the action of the press-fitting force after being pressed into place, so as to be detected by the displacement sensor 50.

[0056] In some embodiments, the positioning fixture 20 is connected to the moving drive mechanism 60 , and the driving direction of the moving drive mechanism 60 is the same as the driving direction of the press-fitting drive mechanism 30 .

[0057] By moving the driving mechanism 60 , the position of the positioning fixture 20 can be adjusted to position and clamp the end of the target workpiece 12 , thereby achieving stable support for the press-fitting portion.

[0058] In some embodiments, the moving drive mechanism 60 and the press-fitting drive mechanism 30 are both mounted on an apparatus frame 70 .

[0059] In this way, the mobile drive mechanism 60 and the press-fit drive mechanism 30 are stably installed, thereby achieving stable support for the target workpiece 12 and driving the target part 11 to perform stable press-fit.

[0060] In some embodiments, the press-fitting device further includes: a supporting cylinder 80 coaxially connected to the target workpiece 12 , and the displacement sensor 50 is connected to the supporting cylinder 80 .

[0061] The support cylinder 80 transmits the movement of the target workpiece 12 along the press-fitting direction "Z" so as to be detected by the displacement sensor 50. The support cylinder 80 can be installed on the workbench to achieve stable installation of the target workpiece 12.

[0062] Furthermore, in some embodiments, the support cylinder 80 and the target workpiece 12 may be connected via a push rod 90 whose ends are adapted to the support cylinder 80 and the target workpiece 12 respectively.

[0063] In some embodiments, the target workpiece 12 is a piston of an integrated brake control system, and the target part 11 is a magnet assembly bracket of the piston, but the present invention is not limited thereto.

[0064] Therefore, by using the pressing equipment of the present invention, the magnet assembly bracket can be accurately pressed into the end hole of the piston, and the positional relationship between the magnet assembly bracket and the end hole of the piston in the pressing direction "Z" can be accurately detected, which not only ensures that the press-fitting is in place, but also avoids damage to the magnet assembly bracket and the piston due to excessive press-fitting, thereby ensuring the working performance of the integrated braking control system.

[0065] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A press-fitting device for press-fitting a target part into an end hole of a target workpiece, characterized in that: The press-fitting equipment comprises: A positioning fixture, comprising a support seat for the target workpiece to pass through the gap and a clamping mechanism for clamping the target workpiece; A press-fitting drive mechanism and a press head assembly connected to the press-fitting drive mechanism; wherein, in the press-fitting state, the clamping force applied by the clamping mechanism to the target workpiece is greater than the friction force between the target part and the target workpiece, and is less than the press-fitting force applied by the press-fitting drive mechanism to the target part; A displacement sensor is connected to the target workpiece, and a detection direction of the displacement sensor is the same as a driving direction of the press-fitting driving mechanism.

2. The press-fitting device according to claim 1, wherein: The pressure head assembly includes: A pressing head, wherein a first end of the pressing head is connected to the press-fitting drive mechanism and a second end of the pressing head is connected to the target part; an elastic stripping unit connected to the first end of the pressing head; In the press-fitting state, as the press head moves, the elastic stripping unit presses against the support seat; When the press-fitting is completed, the elastic stripping unit drives the press head to separate from the target part; When the press-fitting is completed, the matching force between the press head and the target part is smaller than the friction force between the target part and the target workpiece.

3. The press-fitting device according to claim 2, wherein: The elastic stripping unit includes a support plate movably mounted on the pressure head and an elastic unit connecting the support plate and the first end of the pressure head; Wherein, two opposite ends of the support plate are respectively connected to the elastic units.

4. The press-fitting device according to claim 3, wherein: The support plate has an annular guide portion; In a natural state, the annular guide portion is loosely sleeved with the second end of the pressing head and loosely fits with the target part; In the press-fitting state, the annular guide portion extends into the through hole of the support seat, wherein the support seat is sleeved on the end portion of the target workpiece.

5. The press-fitting device according to claim 1, wherein: The clamping mechanism clamps the target workpiece via closable clamping jaws.

6. The press-fitting device according to claim 1, wherein: The positioning fixture is connected to a moving drive mechanism, and a driving direction of the moving drive mechanism is the same as a driving direction of the press-fitting drive mechanism.

7. The press-fitting device according to claim 6, wherein: The moving drive mechanism and the pressing drive mechanism are both installed on the equipment frame.

8. The press-fitting device according to claim 1, wherein: Also includes: The supporting cylinder is coaxially connected to the target workpiece, and the displacement sensor is connected to the supporting cylinder.

9. The press-fitting device according to claim 1, wherein: The detection accuracy of the displacement sensor is less than or equal to 0.1 mm.

10. The press-fitting device according to any one of claims 1 to 9, characterized in that: The target workpiece is a piston of an integrated brake control system, and the target part is a magnet assembly bracket of the piston.

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