Pulley assembly tooling and tooling process

Abstract

The present application discloses a pulley assembly tool, which belongs to the field of pulley assembly. A tool table forms a work surface for placing the pulley; a support frame is fixed on the work surface and is in an inverted U shape; a clamp is arranged on the work surface and is used to clamp the pulley so that the pulley is fixed on the work surface; the pulley assembly tool also includes: a rotating sleeve, which is rotatably arranged on the support frame and is arranged opposite to the clamp; a pressure rod, which is rotatably arranged on the rotating sleeve, and its length direction is perpendicular to the work surface; a pressure block, which is cylindrical and fixed on the end of the pressure rod, is used to abut against the bearing; a telescopic block is movably arranged on the side wall of the pressure block and abuts against the ring wall of the elastic ring; wherein two clamping rods are also rotatably arranged on the pressure block, and the clamping rods are inserted into the clamping holes of the elastic ring. The beneficial effect of the present application is to provide a pulley assembly tool that is easy to install.

Description

Technical Field

[0001] The present application relates to the field of pulley assembly, and in particular, to a pulley assembly tool. Background Art

[0002] Currently, the production of synchronous pulleys for mechanical transmissions is widely made of metal materials. Metal processing synchronous pulleys require the use of cutting machines, CNC lathes, gear hobbing machines, broaching machines, internal hole grinders, external cylindrical grinders, deburring machines, riveting machines and other equipment. As a result, the production process of synchronous pulleys is complicated, resulting in complex processes, high labor costs and low production efficiency. Chemical materials such as cutting fluids, lubricating oils, and nitric acid (surface treatment process) are used in the production process, resulting in waste of resources and pollution to the environment, increasing the production cost of synchronous pulleys.

[0003] During the assembly of the synchronous pulley, the bearing needs to be placed in the pulley, and then an elastic ring needs to be installed on the pulley to limit the bearing.

[0004] However, in the existing technology, installing the bearing and installing the elastic ring are carried out in two steps. In particular, when installing the elastic ring, it is necessary to clamp the elastic ring with spring pliers and then put the elastic ring into the pulley. After clamping the elastic ring with the spring pliers, it is not easy to accurately buckle the elastic ring into the pulley. Therefore, it is necessary to further press the elastic ring to make the elastic ring fit into the pulley. This is very troublesome when assembling the synchronous pulley.

[0005] There is no pulley assembly tool that can easily install bearings and elastic rings. Summary of the Invention

[0006] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0007] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a pulley assembly tool and a tooling table, forming a work surface for placing the pulley;

[0008] The support frame is fixed on the work surface and is in the shape of an inverted U;

[0009] A clamp is provided on the work surface and is used to clamp the pulley so as to fix the pulley on the work surface;

[0010] The pulley assembly tool also includes:

[0011] The rotating sleeve is rotatably arranged on the support frame and is arranged opposite to the clamp;

[0012] The pressure rod is rotatably arranged on the rotating sleeve, and its length direction is perpendicular to the work surface;

[0013] The pressing block is cylindrical and fixed to the end of the pressing rod to contact the bearing;

[0014] If the telescopic block is movably arranged on the side wall of the pressing block, it contacts the ring wall of the elastic ring;

[0015] Among them, two clamping rods are rotatably provided on the pressing block, and the clamping rods are inserted into the clamping holes of the elastic ring;

[0016] The clamping rod is provided to clamp the clamping hole of the elastic ring, and then the elastic ring is installed into the pulley during the process of pressing the bearing; the process of installing the elastic ring through spring pliers is avoided, and the bearing and the elastic ring can be installed at the same time, which saves tooling time and improves tooling efficiency.

[0017] Furthermore, the surface portion of the pressing block is concave to form a circular groove for accommodating the telescopic block;

[0018] The telescopic block is in an arc shape, and the inner wall thereof is fitted with the surface of the annular groove so that the outer wall of the telescopic block is coplanar with the outer wall of the pressing block.

[0019] Furthermore, a guide groove is provided on the pressing block, and the guide groove extends radially along the radial direction of the pressing block;

[0020] The telescopic block is movably arranged in the guide groove so that the telescopic block slides along the extending direction of the guide groove.

[0021] Furthermore, the surface portion of the pressing block is concave to form a rotating cavity; the rotating cavity is located above the joint of the two adjacent telescopic blocks;

[0022] The clamping rod is provided with a rotating rod rotatably arranged in the rotating cavity, and the rotating rod is respectively located above the joint of two adjacent telescopic blocks;

[0023] Wherein, the two rotating rods are symmetrically arranged with the fitting surfaces of the two adjacent telescopic blocks being used as the reference plane.

[0024] Furthermore, the inner wall portion of the pressing block is concave to form a rotation groove, and the rotation groove extends along the circumferential direction of the pressing block.

[0025] The clamping rod part protrudes from the bottom wall of the rotating groove to form a driving shaft; a gear is fixed on the driving shaft;

[0026] A rotating ring is provided in the rotating groove, and the rotating ring is located between the two gears to form a groove; the groove wraps around one of the gears;

[0027] The groove is provided with a first rack that meshes with the gear located in the groove, so that the first rack meshes with the part of one of the gears close to the inner wall of the rotating groove; the rotating ring is provided with a second rack that meshes with the other gear, so that the second rack meshes with the part of the other gear away from the rotating groove.

[0028] Furthermore, a circular arc groove is provided at the bottom portion of the rotating groove;

[0029] The arc groove extends through the upper end of the telescopic plate;

[0030] An inclined groove is formed on the upper end wall of the telescopic plate and exposed to the arc groove; the inclined groove is inclined in a direction away from the axis of the pressing block;

[0031] The rotating ring is provided with a convex rod, which passes through the arc groove and is partially embedded in the oblique groove;

[0032] The side wall of the protruding rod abuts against the inner wall of the inclined groove.

[0033] Furthermore, the two end portions of the rotating sleeve extend radially to form two fixed platforms;

[0034] The fixed platform has a rotating hole, and a rotating roller is inserted into the rotating hole;

[0035] The rotating roller is provided with a pressing rod;

[0036] Wherein, a support rod is provided on the side wall of the rotating sleeve and opposite to the fixed platform, and the length of the support rod is 10 times the height of the fixed platform.

[0037] Furthermore, the fixture comprises:

[0038] A first arc plate is movably arranged on the work surface;

[0039] A second arc plate is disposed on the work surface and moves relative to the first arc plate;

[0040] The threaded holes are both provided with a first arc plate and a second arc plate; and the threads of the two threaded holes are opposite;

[0041] The double-headed threaded rod has external thread grooves with opposite spiral directions at both ends, which are respectively engaged with the threaded holes on the first arc plate and the second arc plate.

[0042] Furthermore, a motor is provided on the workbench for driving the double-headed threaded rod to rotate.

[0043] Furthermore, the tooling process of the pulley assembly tooling is characterized by the following steps:

[0044] a. Prepare the pulley, two bearings and elastic sheet required for tooling;

[0045] b. Place the pulley in the fixture and fix it on the work surface;

[0046] c. Place the two bearings stacked in the assembly hole of the pulley;

[0047] d. Insert the two clamping rods into the holes of the elastic ring to drive the telescopic blocks together. At this time, the clamping rods pull the elastic ring to change, so that the inner wall of the elastic ring contacts the surface of the telescopic block;

[0048] e. Press the bearing with the pressing block. When the elastic ring moves to the limit ring of the assembly hole, the telescopic block is driven to expand. The elastic ring is squeezed into the limit ring by the movement of the telescopic block to achieve installation.

[0049] The beneficial effect of the present application is that it provides a pulley assembly tool that improves tooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0051] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0052] In the attached figure:

[0053] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0054] Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing the fixture structure;

[0055] Figure 3 It is a structural diagram of a part of the embodiment, mainly showing the support frame and the pressure block structure;

[0056] Figure 4 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the pressing block;

[0057] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the internal structure of the rotating chamber;

[0058] Figure 6 It is a structural schematic diagram of a part of the embodiment, mainly showing the guide groove and the telescopic block structure;

[0059] Figure 7 It is a structural schematic diagram of a part of the embodiment, mainly showing the annular groove structure;

[0060] Figure 8 It is a structural schematic diagram of a part of the embodiment, mainly showing the inclined groove and the protruding rod structure;

[0061] Figure 9 The structure of the pulley according to the embodiment of the present application;

[0062] Figure 10 The structure of the elastic ring according to the embodiment of the present application;

[0063] Figure 11 This is the structure of the elastic ring and the limiting ring in the embodiment of the present application.

[0064] Reference numerals:

[0065] 100, pulley; 101, bearing; 102, elastic ring; 1021, clamping hole; 1022, elastic sheet;

[0066] 1. Workbench; 11. Work surface;

[0067] 2. Support frame; 21. Cylinder; 22. Rotating sleeve; 23. Fixed platform; 231. Rotating roller; 24. Pressure rod;

[0068] 3. Clamp; 31. First arc plate; 32. Second arc plate; 33. Threaded hole; 34. Double-threaded rod; 35. Motor;

[0069] 4. Pressing block; 41. Annular groove; 42. Telescopic block; 421. Oblique groove; 422. Protruding rod; 411. Guide groove; 43. Clamping rod; 44. Rotating cavity; 45. Rotating rod; 46. Rotating groove; 461. Arc groove. DETAILED DESCRIPTION

[0070] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0071] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0072] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0073] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0074] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0075] Example 1

[0076] A pulley 100 assembly tool, comprising: a tooling platform 1, a support frame 2, a pressing block 4, a telescopic block 42, and a clamping rod 43;

[0077] The workbench 1 forms a work surface 11 for placing the pulley 100; the support frame 2 is fixed on the work surface 11 and is in an inverted U shape; the clamp 3 is set on the work surface 11 and is used to clamp the pulley 100 so that the pulley 100 is fixed on the work surface 11; the part of the support frame 2 located above the clamp 3 is a cylinder 21; the rotating sleeve 22 is sleeved on the cylindrical part 21 of the support frame 2 and is arranged opposite to the clamp 3; the two ends of the rotating sleeve extend radially to form two fixed platforms 23; the fixed platform 23 has a rotating hole, and the rotating hole A rotating roller 231 is inserted therein; a pressing rod 24 is provided on the rotating roller 231; a support rod is provided on the side wall of the rotating sleeve and opposite the fixed platform 23, and the length of the support rod is 10 times the height of the fixed platform 23; more specifically, a pressing block 4 is provided at the bottom of the pressing rod 24; the pressing block 4 is cylindrical 21-shaped and fixed to the end of the pressing rod 24, and is used to abut against the bearing 101; due to the provision of the support rod, the rotating sleeve is rotated with the rotating sleeve as the fulcrum, and the pressing block 4 is driven to abut against the bearing 101 according to the principle of leverage, which has a labor-saving effect;

[0078] The surface portion of the pressing block 4 is concave to form an annular groove 41, and a plurality of telescopic blocks 42 are provided on the inner wall of the annular groove 41, which are evenly distributed along the circumferential direction of the annular groove 41. In this embodiment, four blocks are used as an example; the telescopic block 42 is arc-shaped, and the inner wall fits the surface of the annular groove 41 so that the outer wall of the telescopic block 42 is coplanar with the outer wall of the pressing block 4; the outer wall of the telescopic block 42 can contact the annular wall of the elastic ring 102; more specifically, a guide groove 411 is provided on the pressing block 4, and the guide groove 411 extends radially along the radial direction of the pressing block 4; the telescopic block 42 is partially convex, and the convex portion is inserted into the guide groove 411 so that the telescopic block 42 slides along the extension direction of the guide groove 411;

[0079] Two clamping rods 43 are also rotatably provided on the pressing block 4, and the clamping rods 43 are inserted into the clamping holes 1021 of the elastic ring 102; more specifically, the surface portion of the pressing block 4 is concave to form a rotating cavity 44; the rotating cavity 44 is located above the joint of the two adjacent telescopic blocks 42; the clamping rod 43 is provided with a rotating rod 45 rotatably provided in the rotating cavity 44, and the rotating rods 45 are respectively located above the joint of the two adjacent telescopic blocks 42; with the joint surface of the two adjacent telescopic blocks 42 as the reference surface, the two rotating rods 45 are symmetrically arranged; in this way, when installing When the elastic ring 102 is in operation, the two clamping rods 43 are inserted into the clamping hole 1021 of the elastic ring 102; since the clamping rods 43 can drive the elastic ring 102 to deform when rotating relative to each other, the inner diameter of the elastic ring 102 is reduced, and the inner wall of the elastic ring 102 is driven to fit the outer wall of the telescopic block 42; in this way, the elastic ring 102 is fixed on the pressing block 4 and can follow the pressing block 4 into the assembly hole of the pulley 100; this arrangement avoids the need for circlip pliers to install the elastic ring 102 into the assembly hole, thereby improving the convenience of installing the elastic ring 102;

[0080] More specifically, the inner wall of the pressing block 4 is concave to form a rotating groove 46, which extends one circle along the circumferential direction of the pressing block 4; the clamping rod 43 partially protrudes from the bottom wall of the rotating groove 46 to form a driving shaft; a gear is fixed on the driving shaft; a rotating ring 47 is provided in the rotating groove 46, and the rotating ring 47 is located between the two gears to form a groove 471; the groove 471 wraps one of the gears 4451; the groove 471 has a first rack 472 that meshes with the gear located in the groove 471, so that the first rack meshes with the part of one of the gears close to the inner wall of the rotating groove 46; the rotating ring 47 is provided with a second rack that meshes with the other gear, so that the second rack 473 meshes with the part of the other gear away from the rotating groove 46; the bottom part of the rotating groove 46 is provided with an arc groove 461 ; The arc groove 461 passes through the upper end of the telescopic block 42; the upper end wall of the telescopic block 42 and the portion exposed to the arc groove 461 is provided with an oblique groove 421; the oblique groove 421 is inclined in the direction away from the axis of the pressing block 4; the rotating ring 47 is provided with a protruding rod 422, which passes through the arc groove 461 and is partially embedded in the oblique groove 421; wherein, the side wall of the protruding rod 422 conflicts with the inner wall of the oblique groove 421; more specifically, when the rotating ring 47 rotates, the telescopic block 42 is driven to move along the direction of the guide groove 411 to realize the expansion of the telescopic block 42, and at this time, the two clamping rods 43 expand outward so that they can be inserted into the clamping hole 1021 of the elastic ring 102; rotating the rotating ring 47 in the opposite direction drives the telescopic block 42 to gather, and the clamping rod 43 shrinks inward to drive the elastic ring 102 to deform.

[0081] The fixture 3 includes: a first arc plate 31, a second arc plate 32, a threaded hole 33, and a double-threaded rod 34;

[0082] The first arc plate 31 is movably disposed on the work surface 11; the second arc plate 32 is disposed on the work surface 11 so as to be movable relative to the first arc plate 31; wherein the inner walls of the first arc plate 31 and the second arc plate 32 contact the outer wall of the pulley 100, so that the pulley 100 is clamped by the first arc plate 31 and the second arc plate 32;

[0083] The end portions of the first arc plate 31 and the second arc plate 32 are raised, and threaded holes 33 are formed on the surfaces of the raised portions, and the threads of the two threaded holes 33 are opposite; both ends of the double-headed threaded rod 34 are provided with external thread grooves with opposite spiral directions, which respectively engage with the threaded holes 33 on the first arc plate 31 and the second arc plate 32; a motor 35 is also provided on the workbench 1 for driving the double-headed threaded rod 34 to rotate.

[0084] Example 2

[0085] A tooling process for assembling a pulley 100 is characterized by the following steps:

[0086] a. Prepare the required tooling pulley 100, two bearings 101, an elastic sheet 1022; wherein the elastic sheet 1022 has a surface that conflicts with the upper end surface of the limiting ring 1022; the elastic sheet 1022 is arc-shaped, and the arc surface conflicts with the ring opening of the limiting ring;

[0087] b. The pulley 100 is placed in the fixture 3 and fixed to the work surface 11;

[0088] c. The two bearings 101 are stacked and placed in the assembly hole of the pulley 100;

[0089] d. Insert the two clamping rods 43 into the card hole 1021 of the elastic ring 102, driving the telescopic block 42 together, then the clamping rod 43 pulls the elastic ring 102 to deform, so that the inner wall of the elastic ring 102 contacts the surface of the telescopic block 42;

[0090] e. The bearing 101 is pressed against the pressing block 4. When the elastic ring 102 moves to the limiting ring 103 of the assembly hole, the telescopic block 42 is driven to expand. The elastic ring 102 is squeezed into the limiting ring 103 by the movement of the telescopic block 42 to achieve installation.

[0091] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A pulley assembly tool, comprising: a workbench, forming a work surface for placing the pulleys; A support frame is fixed on the work surface and is in an inverted U shape; A clamp is provided on the work surface and is used to clamp the pulley so as to fix the pulley on the work surface; Its characteristics are: The pulley assembly tool also includes: A rotating sleeve is rotatably disposed on the support frame and is disposed opposite to the clamp; A pressing rod is rotatably disposed on the rotating sleeve, and its length direction is perpendicular to the work surface; The pressing block is cylindrical and fixed to the end of the pressing rod to contact the bearing; The telescopic block is movably arranged on the side wall of the pressing block and contacts the ring wall of the elastic ring; Among them, two clamping rods are rotatably provided on the pressing block, and the clamping rods are inserted into the clamping holes of the elastic ring; The surface portion of the pressing block is concave to form an annular groove for accommodating the telescopic block; The telescopic block is in an arc shape, and the inner wall thereof is in contact with the surface of the annular groove so that the outer wall of the telescopic block is coplanar with the outer wall of the pressing block; A guide groove is provided on the pressing block, and the guide groove extends radially along the radial direction of the pressing block; The telescopic block is movably arranged in the guide groove so that the telescopic block slides along the extension direction of the guide groove; The surface portion of the pressing block is concave to form a rotation cavity; the rotation cavity is located above the joint of the two adjacent telescopic blocks; The clamping rod is provided with a rotating rod rotatably arranged in the rotating cavity, and the rotating rod is respectively located above the joint of two adjacent telescopic blocks; Wherein, the two rotating rods are symmetrically arranged with the fitting surfaces of the two adjacent telescopic blocks being used as a reference plane; The inner wall portion of the pressing block is concave to form a rotation groove, and the rotation groove extends along the circumferential direction of the pressing block; The clamping rod protrudes from the bottom wall of the rotating groove to form a driving shaft; a gear is fixed on the driving shaft; A rotating ring is provided in the rotating groove, and the rotating ring is located between the two gears to form a groove; the groove wraps around one of the gears; The groove is provided with a first rack meshing with a gear located in the groove, so that the first rack meshes with a portion of one of the gears close to the inner wall of the rotating groove; the rotating ring is provided with a second rack meshing with another gear, so that the second rack meshes with a portion of the other gear away from the rotating groove; The bottom portion of the rotating groove is provided with an arc groove; The arc groove extends to the upper end of the telescopic block; A bevel groove is formed on the upper end wall of the telescopic block and exposed to the arc groove; the bevel groove is inclined in a direction away from the axis of the pressing block; The rotating ring is provided with a convex rod, which passes through the arc groove and is partially embedded in the oblique groove; Wherein, the side wall of the protruding rod abuts against the inner wall of the inclined groove.

2. The pulley assembly tool according to claim 1, characterized in that: The two end portions of the rotating sleeve extend radially to form two fixed platforms; The fixing platform has a rotating hole, and a rotating roller is inserted into the rotating hole; The rotating roller is provided with the pressing rod; Wherein, a support rod is provided on the side wall of the rotating sleeve and opposite to the fixed platform, and the length of the support rod is 10 times the height of the fixed platform.

3. The pulley assembly tool according to claim 1, characterized in that: The fixture comprises: A first arc plate is movably arranged on the work surface; a second arc plate, arranged on the work surface so as to move relative to the first arc plate; The threaded holes are both provided on the first arc plate and the second arc plate; and the threads of the two threaded holes are opposite; The double-headed threaded rod has external thread grooves with opposite spiral directions at both ends, which are respectively engaged with the threaded holes on the first arc plate and the second arc plate.

4. The pulley assembly tool according to claim 3, characterized in that: The tooling table is also provided with a motor for driving the double-threaded rod to rotate.

5. A tooling process for the pulley assembly tooling according to any one of claims 1 to 4, characterized in that: The following steps are as follows: a. Prepare the pulley, two bearings and elastic sheet required for tooling; b. Place the pulley in the fixture and fix it on the work surface; c. Place the two bearings stacked in the assembly hole of the pulley; d. Insert the two clamping rods into the holes of the elastic ring to drive the telescopic blocks together. At this time, the clamping rods pull the elastic ring to change, so that the inner wall of the elastic ring contacts the surface of the telescopic block; e. Press the bearing with the pressing block, and when the elastic ring moves to the limit ring of the assembly hole, Then, the telescopic block is driven to expand; the elastic ring is squeezed into the limiting ring by the movement of the telescopic block. Achieve installation.

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