A positioning device for a crankshaft signal tooth installation

Abstract

This utility model discloses a crankshaft signal tooth mounting and positioning device for welding, comprising a flat plate and a disc. The disc is fixedly connected to the signal tooth. The flat plate has a center hole at its center, and the disc has a center hole at its center. A detachable nylon positioning sleeve is installed inside the center hole of the disc. An annular groove is provided on the upper surface of the disc. A first boss, a second boss, and a third boss are provided on the inner wall of the groove. A first tooth groove is provided on the inner side of the first boss, a second tooth groove is provided on the inner side of the second boss, and a third tooth groove is provided on the inner side of the third boss. A through positioning hole is provided on the groove, and a positioning pin is installed inside the positioning hole. This crankshaft signal tooth mounting and positioning device is used for positioning the crankshaft crank and signal tooth before welding. It solves the problem of deformation caused by press fitting, and provides accurate, fast, and efficient positioning, ensuring the positional dimensions of the crankshaft crank and signal tooth, and improving the first-pass yield and production efficiency of crankshaft products.

Description

Technical Field

[0001] This utility model relates to a crankshaft production equipment, and more specifically, to a crankshaft signal tooth mounting and positioning device for welding. Background Technology

[0002] Installing timing gears, sprockets, signal gears, and other transmission components on crankshafts is a common assembly process. Due to different crankshaft transmission requirements or gear structures, each crankshaft and gear needs to be installed according to specific positional requirements. Currently, there is a signal gear with missing teeth, which requires the missing tooth portion to be installed on the crankshaft in a specific position and welded securely. This missing tooth signal gear is a thin-walled gear, and pressing it with a press machine can easily cause deformation, leading to inaccurate installation. Improvements are needed to address this issue. Utility Model Content

[0003] Therefore, it is necessary to provide a crankshaft signal gear mounting and positioning device for welding to address the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A crankshaft signal tooth mounting and positioning device for welding, characterized in that the device comprises a flat plate and a disc, wherein the disc is fixedly connected to the signal tooth.

[0006] The flat plate has a central hole at its center, and the disc has a central hole at its center. A detachable nylon positioning sleeve is provided inside the central hole of the disc. An annular disc groove is provided on the upper surface of the disc. A first boss, a second boss, and a third boss are provided on the inner wall of the disc groove. A first tooth groove is provided on the inner side of the first boss, a second tooth groove is provided on the inner side of the second boss, and a third tooth groove is provided on the inner side of the third boss. The second and third tooth grooves are located at two equal intervals on the inner wall of the disc groove. The first tooth groove is located between the second and third tooth grooves. A through positioning hole is provided on the disc groove. The positioning hole is located at the opposite position of the first tooth groove. A positioning pin is provided inside the positioning hole.

[0007] In a preferred embodiment of this utility model, the nylon positioning sleeve, the disc groove, the second tooth groove, the first tooth groove, and the third tooth groove are concentrically arranged.

[0008] In a preferred embodiment of this utility model, the second tooth groove, the first tooth groove and the third tooth groove are clearance fit with the tooth width of the signal tooth, and the clearance is equal to 0.1mm.

[0009] In a preferred embodiment of this utility model, the positioning pin and the positioning hole are interference fit.

[0010] In a preferred embodiment of this utility model, the number of signal teeth is even, and any two teeth are missing.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model provides a crankshaft signal tooth mounting and positioning device for welding. This device is used for positioning the crankshaft crank and signal tooth before welding. It solves the problem of deformation caused by press fitting. The positioning is accurate, fast and efficient, ensuring the position and size of the crankshaft crank and signal tooth, and improving the first-time assembly pass rate and production efficiency of crankshaft products. Attached Figure Description

[0013] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A three-dimensional structural schematic diagram of the crankshaft signal tooth mounting and positioning device for welding according to this utility model;

[0015] Figure 2 for Figure 1 An exploded three-dimensional structural diagram of the crankshaft signal gear mounting and positioning device for welding.

[0016] Figure 3 for Figure 2 A three-dimensional structural diagram of the positioning device's disc;

[0017] Figure 4 for Figure 3 A schematic diagram showing the connection between the disk and the signal teeth;

[0018] Figure 5 This is a schematic diagram illustrating the use of the crankshaft signal gear mounting and positioning device for welding according to this utility model;

[0019] Figure 6 for Figure 5 A schematic diagram of the welding crankshaft signal gear mounting and positioning device, showing another perspective;

[0020] Figure 7 for Figure 5 A schematic diagram of the welding crankshaft signal gear mounting and positioning device, showing another perspective;

[0021] The markings in the diagram are explained as follows: 1. First boss; 2. Second boss; 3. Third boss; 4. Second tooth groove; 5. First tooth groove; 6. Third tooth groove; A. Crankshaft signal tooth mounting and positioning device for welding; B. Disc; C. Disc groove; E. Positioning hole; F. Positioning pin; J. Center hole of plate; K. Center hole of disc; N. Nylon positioning sleeve; Q. Signal tooth; T. Plate. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figures 1 to 4 As shown, the crankshaft signal tooth mounting and positioning device A for welding includes a flat plate T and a disc B, which is fixedly connected to the signal tooth Q.

[0024] The flat plate T has a central hole J at its center, and the disc B has a central hole K at its center. A detachable nylon positioning sleeve N is provided inside the central hole K. The upper surface of the disc B has an annular disc groove C. The inner wall of the disc groove C has a first boss 1, a second boss 2, and a third boss 3. The inner side of the first boss 1 has a first tooth groove 5, the inner side of the second boss 2 has a second tooth groove 4, and the inner side of the third boss 3 has a third tooth groove 6. The second tooth groove 4 and the third tooth groove 6 are located at two equal intervals on the inner wall of the disc groove C. The first tooth groove 5 is located between the second tooth groove 4 and the third tooth groove 6. The disc groove C has a through positioning hole E, which is located opposite to the first tooth groove 5. The positioning hole E has a positioning pin F inside it.

[0025] It should be noted that the nylon positioning sleeve N, the disc groove C, the second tooth groove 4, the first tooth groove 5, and the third tooth groove 6 are concentrically arranged.

[0026] In addition, the second tooth groove 4, the first tooth groove 5 and the third tooth groove 6 are clearance fits with the tooth width of the signal tooth, and the clearance H is equal to 0.1mm.

[0027] In addition, the locating pin F and the locating hole E are interference fit. The signal tooth Q has an even number of teeth, and is missing any two of them, such as missing tooth d1 and missing tooth d2.

[0028] The working method of the crankshaft signal tooth mounting and positioning device for welding is described below.

[0029] like Figure 4 As shown, the crankshaft W and signal tooth Q installed by the welding crankshaft signal tooth mounting and positioning device are positioned with tooth tip D in the Y+ direction and missing tooth d1 in the Y- direction. The specific operating steps are as follows:

[0030] Step 1: As Figure 4 and Figure 5 As shown, first place the signal tooth Q in the mounting circular groove C, let the tooth tip D fall into the first tooth groove 5, and confirm that the missing tooth d1 is aligned with the positioning pin F. Then put the crankshaft W rod diameter S into the nylon positioning sleeve N, align the crankshaft positioning hole L with the positioning pin F, and press it in with a little force.

[0031] Step 2: As Figure 6 As shown, place the crankshaft W on the perforated plate T, and let the crankshaft's crank pin R fall into the center hole of the plate. Keep it flat, remove the welding crankshaft signal tooth and install the positioning device A. Positioning is complete.

[0032] This utility model provides a crankshaft signal tooth mounting and positioning device for welding. This crankshaft signal tooth mounting and positioning device is used for positioning the crankshaft crank and signal tooth before welding. It solves the problem of deformation caused by press fitting. The positioning is accurate, fast and efficient, ensuring the position and size of the crankshaft crank and signal tooth, and improving the first-time assembly pass rate and production efficiency of crankshaft products.

[0033] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A crankshaft signal gear mounting and positioning device for welding, characterized in that, The welding crankshaft signal tooth mounting and positioning device (A) includes a flat plate (T) and a disc (B), wherein the disc (B) is fixedly connected to the signal tooth (Q). The plate (T) has a central hole (J) at its center, and the disk (B) has a central hole (K) at its center. A detachable nylon positioning sleeve (N) is provided inside the central hole (K). An annular groove (C) is provided on the upper surface of the disk (B). A first boss (1), a second boss (2), and a third boss (3) are provided on the inner wall of the groove (C). A first toothed groove (5) is provided on the inner side of the first boss (1), and a third toothed groove (5) is provided on the inner side of the second boss (2). The third boss (3) has a second tooth groove (4) and a third tooth groove (6) on its inner side. The second tooth groove (4) and the third tooth groove (6) are located at two equal positions on the inner wall of the disc groove (C). The first tooth groove (5) is located between the second tooth groove (4) and the third tooth groove (6). The disc groove (C) has a through positioning hole (E). The positioning hole (E) is located at the opposite position of the first tooth groove (5). The positioning hole (E) has a positioning pin (F).

2. The welding crankshaft signal gear mounting and positioning device according to claim 1, characterized in that, The nylon positioning sleeve (N), the disc groove (C), the second toothed groove (4), the first toothed groove (5), and the third toothed groove (6) are arranged concentrically.

3. The welding crankshaft signal gear mounting and positioning device according to claim 1, characterized in that, The second tooth groove (4), the first tooth groove (5) and the third tooth groove (6) are in clearance fit with the tooth width of the signal tooth, and the clearance is equal to 0.1mm.

4. The welding crankshaft signal gear mounting and positioning device according to claim 1, characterized in that, The locating pin (F) and the locating hole (E) are interference fit.

5. The welding crankshaft signal gear mounting and positioning device according to claim 1, characterized in that, The signal tooth (Q) has an even number of teeth, and is missing any two of them.

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