Device for measuring pull-out force of rotor

Abstract

The utility model relates to the technical field of steering gear shaft assembly detection, in particular to a device for measuring the pulling-out force of a rotor, which comprises a positioning device, two clamping devices and a locking bolt, the positioning device is provided with a shaft hole, the two clamping devices are connected with the positioning device in a sliding manner, and the locking bolt is connected with the positioning device in a sliding manner. Supporting parts are arranged on the opposite sides of the two clamping devices, one end of each supporting part is fixedly connected with the corresponding clamping device or integrally formed with the corresponding clamping device, and the other end of each supporting part extends towards the other clamping device and extends in the direction away from the positioning device. The beneficial effects are that the supporting part is arranged, the cavity is formed in the supporting part, so that the step of the gear shaft is avoided, the rotor step abuts against the supporting part, and when a press applies force, the force acts on the rotor step, so that the rotor is well pulled out, and the pull-out force of the rotor is smoothly and accurately measured.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gear shaft assembly detection, and particularly relates to a device for measuring the pull-off force of a rotor. Background Art

[0002] In order to ensure the safety of passengers in a vehicle, technicians will detect the steering gear shaft assembly, and measuring the pull-off force of the rotor is a key technical detection. Measuring the pull-off force of the rotor is to verify the welding strength of the rotor welded on the gear shaft, prevent the rotor from falling off during use and causing the failure of the power steering function of the steering gear, thereby affecting the safety of passengers in the vehicle.

[0003] Currently, for the detection of the welding strength between the rotor and the gear shaft, the prior art is to use a hollow cylindrical tooling. The rotor blades are in contact with the cylindrical tooling, and a press is used to press on the input shaft to press the entire gear shaft assembly downward, and the rotor is extruded out by the tooling, so as to measure the pull-off force of the rotor. In the current technical solution, the rotor blades directly fall on the hollow cylindrical tooling. When the press presses on the input shaft, the rotor blades will be bent by the force, and the rotor and the gear shaft assembly are likely to slide off from the hollow cylindrical tooling, resulting in the inability to pull out the rotor, and thus the pull-off force of the rotor cannot be accurately measured. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is how to smoothly and accurately measure the pull-off force of the rotor.

[0005] The technical solution of the utility model to solve the above technical problem is as follows: A device for measuring the pull-off force of a rotor, including a positioning device, a clamping device and a locking bolt. The positioning device has a shaft hole. There are two clamping devices. The two clamping devices are slidably connected to the positioning device and are respectively located on both sides of the shaft hole. There are two locking bolts. The two locking bolts are arranged in one-to-one correspondence with the two clamping devices. The locking bolts pass through the corresponding clamping devices and are threadedly connected to the positioning device. A support portion is arranged on one side of the two clamping devices facing each other. One end of the support portion is fixedly connected or integrally formed with the clamping device, and the other end extends towards the other clamping device and extends away from the positioning device.

[0006] The beneficial effect of the utility model is: Place the device on the workbench of the existing servo press equipment. By setting the positioning device, the gear shaft assembly is positioned, and the clamping device and the locking bolt further fix the gear shaft assembly, so as to be more stable when measuring the pull-off force of the rotor. By setting the support portion, a cavity is formed inside the support portion, so as to avoid the step of the gear shaft, and the rotor step abuts against the support portion. When the press applies force, the force acts on the rotor step, so as to perfectly pull out the rotor, and thus smoothly and accurately measure the pull-off force of the rotor.

[0007] On the basis of the above technical solutions, the present utility model can also be improved as follows.

[0008] Furthermore, semi-circular notches are provided on one side of each of the two clamping devices facing each other. The edges of the notches extend axially towards one end away from the positioning device to form convex platforms, and one side of the two convex platforms facing each other has the supporting portion.

[0009] The beneficial effect of adopting the above further solution is that semi-circular notches are provided on one side of each of the two clamping devices facing each other. Thus, when the gear shaft assembly is installed, when the two clamping devices approach each other, a circle is formed, enabling the gear shaft to be just correspondingly inserted into the clamping devices. The edges of the notches extend axially towards one end away from the positioning device to form convex platforms, and the convex platforms and the supporting portion are connected to form a cavity. Thus, after the gear shaft assembly is installed, the steps of the gear shaft are avoided, leaving a certain space for the steps of the gear shaft.

[0010] Furthermore, a groove is provided at one end of the clamping device facing the positioning device, and two protrusions are provided at one end of the positioning device facing the clamping device. The two protrusions are arranged radially along the axial hole and are respectively located on both sides of the axial hole, and the two clamping devices are slidably connected to the two protrusions in a one-to-one correspondence.

[0011] The beneficial effect of adopting the above further solution is that by providing a groove on the clamping device and protrusions matching the groove on the positioning device, the two clamping devices can slide along the protrusions, so that the two clamping devices approach or move away from each other, making it more convenient to clamp the gear shaft assembly and improving the clamping efficiency.

[0012] Furthermore, a strip-shaped through hole is provided on the clamping device, and a threaded hole is correspondingly provided on the protrusion. The locking bolt passes through the strip-shaped through hole and is threadedly connected to the threaded hole.

[0013] The beneficial effect of adopting the above further solution is that by providing a strip-shaped through hole on the clamping device, when clamping the gear shaft assembly, only the locking bolt needs to be loosened instead of completely removed, enabling the two clamping devices to slide along the protrusions, and thus enabling the two clamping devices to approach or move away from each other, thereby further improving the clamping efficiency. By providing a threaded hole on the protrusion, after the gear shaft assembly is clamped, the clamping device and the positioning device are fastened by the locking bolt, making the clamping more stable and firm.

[0014] Furthermore, first planes parallel to the protrusions are provided on both sides of the clamping device.

[0015] The beneficial effect of adopting the above further solution is that both sides of the clamping device are set as planes, which not only allows for manual operation but also enables the use of auxiliary tools for operation. The setting of the planes is conducive to the clamping of auxiliary tools. Moreover, the working area of the operating table is limited. Setting both sides of the clamping device as planes just effectively utilizes the operating space of the workbench and also saves the raw materials for manufacturing the clamping device.

[0016] Furthermore, the positioning device includes a positioning seat and a positioning plate, and the positioning seat and the positioning plate are fixedly connected.

[0017] The beneficial effect of adopting the above further solution is that by providing a positioning seat, it is adapted to the workbench of the press equipment. The positioning plate is fixedly connected to the positioning seat, and the setting of the positioning plate provides a space for the sliding stroke of the two clamping devices.

[0018] Furthermore, the positioning seat has a first through hole, the positioning plate has a second through hole, and the first through hole and the second through hole are coaxial and form the shaft hole; one end of the positioning seat and one end of the positioning plate are fixedly connected, and a protrusion is provided at the other end of the positioning plate.

[0019] The beneficial effect of adopting the above further solution is that by setting the positioning seat as a cylinder, it is convenient to place the cylindrical positioning seat in the corresponding hole of the press equipment workbench, and at the same time, the gear shaft assembly is installed to complete the positioning.

[0020] Furthermore, the positioning plate is a circular plate, and one side thereof has a second plane parallel to the protrusion.

[0021] The beneficial effect of adopting the above further solution is that by setting one side of the positioning plate as a plane, it can better adapt to the workbench of the press equipment. The operating space of the workbench of the press equipment is limited, so it avoids other components of the workbench, and further enables the device to be properly placed on the workbench of the press equipment.

[0022] Furthermore, a positioning hole is provided at one end of the positioning plate where it is connected to the positioning seat.

[0023] The beneficial effect of adopting the above further solution is that by providing a positioning hole on the positioning plate, the positioning hole corresponds to the positioning pin on the workbench of the press equipment. The positioning pin is inserted into the positioning hole, and further, when measuring the pull-off force of the rotor, the device is not prone to displacement, thus ensuring the smooth progress of the work of measuring the pull-off force of the rotor and further improving the accuracy of the measurement data.

[0024] Furthermore, there are multiple positioning holes.

[0025] The beneficial effect of adopting the above further solution is that by arranging a plurality of positioning holes on the positioning plate and inserting the positioning pins on the workbench of the press equipment into the positioning holes one by one, the assembly stability of the device is further improved, and thus the data of the pulling-off force of the measuring rotor is made more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic perspective view of the device for measuring the pulling-off force of the rotor of the present invention;

[0027] Figure 2 FIG. is a schematic view of the clamping device of the present invention;

[0028] Figure 3 FIG. is a schematic sectional view of assembling the gear shaft assembly of the present invention;

[0029] Figure 4 FIG. is a schematic view of assembling the gear shaft assembly of the present invention;

[0030] Figure 5 FIG. is a partial schematic view of assembling the gear shaft assembly of the present invention (one of the clamping devices is hidden);

[0031] Figure 6 FIG. is a partial schematic view of the gear shaft assembly of the present invention.

[0032] In the drawings, the list of components represented by each reference numeral is as follows:

[0033] 1. Rotor; 2. Input shaft; 3. Gear shaft; 4. Rotor step; 5. Rotor blade; 6. Gear shaft step;

[0034] 100. Positioning device; 110. Positioning seat; 120. Positioning plate; 130. Projection; 140. Second plane; 150. Positioning hole;

[0035] 200. Clamping device; 210. First clamping block; 220. Second clamping block; 230. Boss; 240. Groove; 250. First plane;

[0036] 300. Locking bolt;

[0037] 400. Support part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0039] As Figures 1 - 6As shown in the figure, this embodiment provides a device for measuring the pull-off force of a rotor, which includes a positioning device 100, a clamping device 200, and a locking bolt 300. The positioning device 100 has a shaft hole. There are two clamping devices 200, and the two clamping devices 200 are slidably connected to the positioning device 100 and are respectively located on both sides of the shaft hole. There are two locking bolts 300, and the two locking bolts 300 are arranged in one-to-one correspondence with the two clamping devices 200. The locking bolt 300 passes through the corresponding clamping device 200 and is threadedly connected to the positioning device 100. A support portion 400 is provided on one side of the two clamping devices 200 facing each other. One end of the support portion 400 is fixedly connected or integrally formed with the clamping device 200, and the other end extends towards the other clamping device 200 and extends away from the positioning device 100.

[0040] In this embodiment, the device is placed on the workbench of an existing servo press equipment. By setting the positioning device 100, the gear shaft assembly is inserted into the shaft hole to position the gear shaft assembly. The clamping device 200 and the locking bolt 300 further clamp and fix the gear shaft assembly, making it more stable when measuring the pull-off force of the rotor 1. By setting the support portion 400, a cavity is formed inside the support portion 400, so as to avoid the gear shaft step 6, and the rotor step 4 abuts against the support portion 400. Then, when the press applies force, the force acts on the rotor step 4. Since the rotor step 4 is at a position close to the axis, compared with the force on the rotor blade 5, the force on the rotor step 4 is less likely to deform, so that the rotor 1 can be pulled out intact, and then the pull-off force of the rotor 1 can be measured smoothly and accurately.

[0041] In a specific embodiment, as Figure 6 shown, the rotor 1 is sleeved on the outer circumference of the gear shaft 3, and the rotor 1 and the gear shaft 3 are fixed by welding to form a welding surface between the rotor 1 and the gear shaft 3. One end of the welding surface is connected to the gear shaft step 6, and the other end is connected to the rotor step 4. The rotor step 4 surrounds the gear shaft 3, and a plurality of rotor blades 5 are arranged at intervals in the circumferential direction of the rotor step 4.

[0042] On the basis of any of the above solutions, semi-circular notches are provided on one side of the two clamping devices 200 facing each other. The edge of the notch extends axially towards one end away from the positioning device 100 and forms a convex platform 230. The support portion 400 is provided on one side of the two convex platforms 230 facing each other.

[0043] On the opposite sides of the two clamping devices 200, semi-circular notches are provided. When installing the gear shaft assembly, when the two clamping devices 200 approach each other, a circle is formed, so that the gear shaft 3 can be just correspondingly installed in the clamping devices 200. The edges of the notches extend axially towards the end away from the positioning device 100 and form bosses 230. The bosses 230 are connected to the supporting part 400 to form a cavity. After installing the gear shaft assembly, the steps of the gear shaft 3 are avoided, and a certain space is left for the steps of the gear shaft 3.

[0044] In a specific embodiment, the two clamping devices 200 are respectively a first clamping block 210 and a second clamping block 220. The first clamping block 210 and the second clamping block 220 slide on the positioning device 100 and approach or move away from each other.

[0045] On the basis of any of the above solutions, a groove 240 is provided at one end of the clamping device 200 facing the positioning device 100, and two protrusions 130 are provided at one end of the positioning device 100 facing the clamping device 200. The two protrusions 130 are arranged radially along the axial hole and are respectively located on both sides of the axial hole. The two clamping devices 200 are slidably connected to the two protrusions 130 in a one-to-one correspondence.

[0046] By providing a groove 240 on the clamping device 200 and a protrusion 130 matching the groove 240 on the positioning device 100, the two clamping devices 200 can slide along the protrusion 130, so that the two clamping devices 200 approach or move away from each other, making it more convenient to clamp the gear shaft assembly and improving the clamping efficiency.

[0047] Optionally, the cross-section of the two protrusions 130 is rectangular or dovetail-shaped, and the shape of the groove 240 is adapted to that of the protrusion 130.

[0048] On the basis of any of the above solutions, the clamping device 200 is provided with a strip-shaped through hole, and a threaded hole is correspondingly provided on the protrusion 130. The locking bolt 300 passes through the strip-shaped through hole and is threadedly connected to the threaded hole.

[0049] By providing a strip-shaped through hole on the clamping device 200, when clamping the gear shaft assembly, only the locking bolt 300 needs to be loosened instead of completely unscrewed, so that the two clamping devices 200 slide along the protrusion 130, and then the two clamping devices 200 approach or move away from each other, thereby further improving the clamping efficiency. By providing a threaded hole on the protrusion 130, after clamping the gear shaft assembly, the clamping device 200 and the positioning device 100 are fastened by the locking bolt 300, so that the clamping is more stable and firm.

[0050] Specifically, the width of the strip-shaped through hole is slightly larger than the diameter of the screw rod of the locking bolt 300.

[0051] Alternatively, the clamping device 200 is provided with a circular through-hole, and a threaded hole is correspondingly provided on the protrusion 130. The locking bolt 300 passes through the circular through-hole and is threadedly connected to the threaded hole.

[0052] In a specific embodiment, by providing a circular through-hole on the clamping device 200, when assembling the gear shaft assembly, first loosen and remove the locking bolt 300, slide the two clamping devices 200 along the protrusion 130 to separate the two clamping devices 200, then install the gear shaft assembly, and then slide the two clamping devices 200 to make them close together, and then place the locking bolt 300 into the circular through-hole and tighten it, so as to install the gear shaft assembly and clamp and secure it.

[0053] Optionally, an internal thread is provided in the circular through-hole, and the circular through-hole is threadedly connected to the locking bolt 300.

[0054] On the basis of any of the above solutions, both sides of the clamping device 200 have a first plane 250 parallel to the protrusion 130.

[0055] Setting both sides of the clamping device 200 as planes not only allows for manual operation but also facilitates the use of auxiliary tools. The plane setting is conducive to the clamping of auxiliary tools. Moreover, the working area of the operating table is limited. Setting both sides of the clamping device 200 as planes effectively utilizes the operating space of the workbench and also saves raw materials for manufacturing the clamping device 200.

[0056] On the basis of any of the above solutions, the positioning device 100 includes a positioning seat 110 and a positioning plate 120, and the positioning seat 110 and the positioning plate 120 are fixedly connected.

[0057] By providing the positioning seat 110, it is adapted to the workbench of the press equipment. The positioning plate 120 is fixedly connected to the positioning seat 110, and the positioning plate 120 provides a space for the sliding stroke of the two clamping devices 200.

[0058] On the basis of any of the above solutions, the positioning seat 110 has a first through-hole, the positioning plate 120 has a second through-hole, the first through-hole and the second through-hole are coaxial and form the shaft hole; one end of the positioning seat 110 and one end of the positioning plate 120 are fixedly connected, and a protrusion 130 is provided at the other end of the positioning plate 120.

[0059] By setting the positioning seat 110 as a cylinder, it is convenient to place the cylindrical positioning seat 110 into the corresponding hole on the workbench of the press equipment, and at the same time, the gear shaft assembly is installed to complete the positioning.

[0060] Based on any of the above solutions, the positioning plate 120 is a circular plate, and one side of the positioning plate has a second plane 140 parallel to the protrusion 130 .

[0061] Optionally, the shape of the positioning plate 120 can be made into a square, a circle or other suitable shapes according to the working space of the workbench of the press equipment.

[0062] By setting one side of the positioning plate 120 as a plane, it can better adapt to the workbench of the press equipment. The operating space of the workbench of the press equipment is limited, so other parts of the workbench are avoided, so that the device can be properly placed on the workbench of the press equipment.

[0063] On the basis of any of the above solutions, a positioning hole 150 is provided at one end of the positioning plate 120 connected to the positioning seat 110 .

[0064] By providing a positioning hole 150 on the positioning plate 120, the positioning hole 150 corresponds to the positioning pin on the workbench of the press equipment, and the positioning pin is inserted into the positioning hole 150. Therefore, when measuring the pull-off force of the rotor 1, the device is not easy to be displaced, thereby ensuring the smooth progress of the work of measuring the pull-off force of the rotor 1 and further improving the accuracy of the measurement data.

[0065] Based on any of the above solutions, there are multiple positioning holes 150.

[0066] By providing a plurality of positioning holes 150 on the positioning plate 120 and inserting the positioning pins on the workbench of the press equipment into the positioning holes 150 one by one, the stability of the assembly of the device is further improved, thereby making the data of the pull-out force of the rotor 1 measured more accurate.

[0067] In a specific embodiment, when in use, the device is first placed on the workbench of the press equipment, the positioning seat 110 is placed in the hole of the workbench, and the positioning hole 150 on the positioning plate 120 is aligned with the positioning pin on the workbench, and the positioning pin is inserted into the positioning hole 150. The locking bolt 300 is loosened so that the two clamping devices 200 can slide, and the two clamping devices 200 are slid away from each other, and the gear shaft assembly is placed in the shaft hole of the positioning device 100, that is, into the cylindrical positioning seat 110. The two clamping devices 200 are slid to approach each other and hold the gear shaft 3. At this time, the rotor step 4 is against the support part 400, and the gear shaft step 6 is just placed in the cavity between the two support parts 400. Tighten the locking bolt 300 so that the entire device holds the gear shaft assembly tightly, start the servo press equipment, and the pressure head of the servo press presses on the input shaft 2. The pressure head presses the entire gear shaft assembly downward, and the step surface of the rotor step 4 is supported by the support part 400, so that the rotor 1 is smoothly and stably separated from the gear shaft 3, and the pull-out force of the rotor 1 is accurately measured and obtained.

[0068] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "inner", "outer", "axial direction", "circumferential direction", "radial direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0069] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0072] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A device for measuring rotor pull-out force, characterized in that: The invention comprises a positioning device (100), a clamping device (200) and a locking bolt (300), wherein the positioning device (100) has an axial hole, the number of the clamping devices (200) is two, the two clamping devices (200) are slidably connected to the positioning device (100) and are respectively located on both sides of the axial hole, the number of the locking bolts (300) is two, the two locking bolts (300) are arranged in a one-to-one correspondence with the two clamping devices (200), the locking bolt (300) passes through the corresponding clamping device (200) and is threadedly connected to the positioning device (100), a supporting portion (400) is arranged on the opposite side of the two clamping devices (200), one end of the supporting portion (400) is fixedly connected to the clamping device (200) or is integrally formed, and the other end thereof extends toward the other clamping device (200) and extends in a direction away from the positioning device (100).

2. A device for measuring rotor pull-out force according to claim 1, characterized in that: A semicircular notch is provided on one side opposite to the two clamping devices (200), the edge of the notch extends axially toward one end away from the positioning device (100) to form a boss (230), and the supporting portion (400) is provided on one side opposite to the two bosses (230).

3. A device for measuring rotor pull-out force according to claim 2, characterized in that: The clamping device (200) is provided with a groove (240) at one end facing the positioning device (100), and the positioning device (100) is provided with two protrusions (130) at one end facing the clamping device (200). The two protrusions (130) are arranged along the radial direction of the shaft hole and are respectively located on both sides of the shaft hole. The two clamping devices (200) are slidably connected with the two protrusions (130) in a one-to-one corresponding manner.

4. The device for measuring rotor pull-out force according to claim 3, characterized in that: The clamping device (200) is provided with a strip-shaped through hole, the protrusion (130) is correspondingly provided with a threaded hole, and the locking bolt (300) passes through the strip-shaped through hole and is threadedly connected to the threaded hole.

5. A device for measuring rotor pull-out force according to claim 4, characterized in that: Both sides of the clamping device (200) have first planes (250) parallel to the protrusions (130).

6. A device for measuring rotor pull-out force according to any one of claims 1 to 5, characterized in that: The positioning device (100) comprises a positioning seat (110) and a positioning plate (120), and the positioning seat (110) and the positioning plate (120) are fixedly connected.

7. A device for measuring rotor pull-out force according to claim 6, characterized in that: The positioning seat (110) has a first through hole, and the positioning plate (120) has a second through hole, the first through hole and the second through hole are coaxial and constitute the axial hole; one end of the positioning seat (110) is fixedly connected to one end of the positioning plate (120), and the other end of the positioning plate (120) is provided with a protrusion (130).

8. The device for measuring rotor pull-out force according to claim 7, characterized in that: The positioning plate (120) is a circular plate, one side of which has a second plane (140) parallel to the protrusion (130).

9. The device for measuring rotor pull-out force according to claim 8, characterized in that: A positioning hole (150) is provided at one end of the positioning plate (120) connected to the positioning seat (110).

10. The device for measuring rotor pull-out force according to claim 9, characterized in that: There are multiple positioning holes (150).

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