A high-precision camshaft timing gear and signal plate press-fitting tool

Abstract

The present invention provides a high-precision camshaft timing gear and signal disc press-fitting tool, which belongs to the technical field of mechanical equipment manufacturing and assembly. The high-precision camshaft timing gear and signal disc press-fitting tool comprises a base plate, a clamping mechanism, a moving mechanism and a pressing head. The clamping mechanism comprises a first positioning seat and a second positioning seat, and the first positioning seat and the second positioning seat are both installed on the surface of the base plate. The present invention clamps and fixes the camshaft by a clamp, thereby reducing the possibility of the camshaft moving and making the press-fitting process more stable and accurate. In addition, the third positioning seat and the pressing head are connected together by a connecting pin and a flange, making the disassembly and assembly of the pressing head more convenient. The operator can install pressing heads of different specifications according to the specifications of workpieces such as timing gears and signal discs, thereby reducing the possibility of press-fitting failure caused by the mismatch between the specifications of the pressing head and the specifications of the workpiece, and improving the stability of the press-fitting.

Description

Technical Field

[0001] The invention relates to the field of mechanical equipment manufacturing and assembly, and in particular to a high-precision camshaft timing gear and signal disc press-fitting tool. Background Art

[0002] When producing diesel engines, it is necessary to install workpieces such as timing gears and signal plates on the surface of the camshaft. Usually, the workpieces and the camshaft are installed together by press fitting.

[0003] The specifications of workpieces such as timing gears and signal plates are different. It is inconvenient to replace the pressing head in the existing pressing equipment. If the specifications of the pressing head do not match the specifications of the workpiece, it will affect the stability and accuracy of the pressing. In addition, the pressing equipment is inconvenient to fix the shaft rods such as the camshaft, which will also affect the stability of the pressing. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a high-precision camshaft timing gear and signal plate pressing tool, which aims to improve the problem that traditional pressing equipment is inconvenient to replace the pressure head and fix the shaft rod, affecting the stability and accuracy of pressing.

[0005] The present invention is achieved in that:

[0006] The invention provides a high-precision camshaft timing gear and signal disk press-fitting tool, comprising a base plate, a clamping mechanism, a moving mechanism and a pressing head.

[0007] The clamping mechanism includes a first positioning seat and a second positioning seat, the first positioning seat and the second positioning seat are both installed on the surface of the base plate, and clamps are installed on the surfaces of the first positioning seat and the second positioning seat, the moving mechanism includes a third positioning seat and a support seat, the third positioning seat is slidably installed on the surface of the base plate, the support seat is fixed on the surface of the base plate, a telescopic member is installed on the surface of the support seat, the piston end of the telescopic member is fixedly connected to the third positioning seat, a flange is installed on the surface of the pressure head, a connecting pin is installed on the surface of the third positioning seat, and one end of the connecting pin is plugged into the flange.

[0008] In one embodiment of the present invention, a bracket is fixed to the lower end surface of the bottom plate, and running wheels are installed at the bottom end of the bracket, and the running wheels are arranged opposite to each other in pairs.

[0009] In an embodiment of the present invention, the first positioning seat and the second positioning seat are coaxially arranged, and the clamp, the pressure head and the telescopic member are coaxially arranged.

[0010] In one embodiment of the present invention, a guide rail is provided on the upper surface of the bottom plate, and the third positioning seat is slidably sleeved on the guide rail.

[0011] In an embodiment of the present invention, the piston end of the telescopic member is detachably connected to the third positioning seat via a connecting member.

[0012] In one embodiment of the present invention, the connecting member includes a first connecting head and a second connecting head, the first connecting head is installed on the piston end of the telescopic member, the second connecting head is installed on the surface of the third positioning seat, the first connecting head is provided with an internally threaded cylindrical pin, the second connecting head is provided with a countersunk hole and a long hole, and a round wire coil spring is provided in the countersunk hole of the second connecting head, the internally threaded cylindrical pin is inserted into the first connecting head, and the first connecting head and the internally threaded cylindrical pin can move within a limited range of the long hole of the second connector after being combined.

[0013] In one embodiment of the present invention, a timing gear phase positioning pin, a camshaft phase positioning pin and a timing gear anti-misalignment pin are provided at one end of the pressure head.

[0014] In an embodiment of the present invention, the timing gear phase locating pin and the camshaft phase locating pin are arranged to be positioned in the same phase.

[0015] In an embodiment of the present invention, the pressure head is configured to be cylindrical, the flange is sleeved on the surface of the pressure head, and the connection between the flange and the pressure head is integrally formed.

[0016] In one embodiment of the present invention, a countersunk hole is provided on the surface of the third positioning seat, a through hole is provided on the surface of the flange, the threaded section of the connecting pin passes through the countersunk hole and the through hole in sequence, and the head of the connecting pin is immersed in the countersunk hole, and the connecting pin is a threaded pin.

[0017] The beneficial effects of the present invention are as follows: the present invention obtains a high-precision camshaft timing gear and signal disk pressing tool through the above-mentioned design. When in use, the camshaft is clamped and fixed by the clamp, and the timing gear, signal disk and other workpieces are installed at one end of the pressing head. The telescopic part is extended to push the pressing head to move, and the pressing head can press the timing gear and the shaft rod. During the pressing process, the clamp clamps and fixes the shaft rod, reducing the possibility of the shaft rod moving, making the pressing process more stable and precise. In addition, the third positioning seat and the pressing head are connected together through the matching of the connecting pin and the flange, making the disassembly and assembly of the pressing head more convenient. The operator can install pressing heads of different specifications according to the specifications of workpieces such as the timing gear and the signal disk, reducing the possibility of pressing failure caused by the mismatch between the pressing head specifications and the workpiece specifications, and improving the stability of the pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of a press-fitting tool for a high-precision camshaft timing gear and a signal plate provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the connection structure between the base plate and the bracket provided in an embodiment of the present invention;

[0021] Figure 3 The embodiments of the present invention provide Figure 2 Schematic diagram of the structure at A in the middle;

[0022] Figure 4 A schematic diagram of the pressure head structure provided in an embodiment of the present invention.

[0023] In the figure: 100-base plate; 110-bracket; 120-travel wheel; 130-guide rail; 200-clamping mechanism; 210-first positioning seat; 220-second positioning seat; 230-clamp; 300-moving mechanism; 310-third positioning seat; 320-support seat; 330-telescopic member; 340-connecting member; 341-first connecting head; 342-second connecting head; 343-inner threaded cylindrical pin; 344-pin hole; 345-round wire helical spring; 400-pressing head; 410-flange; 420-connecting pin; 430-timing gear phase positioning pin; 440-camshaft phase positioning pin; 450-timing gear anti-misalignment pin. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] Example

[0032] See also Figure 1-4The present invention provides a high-precision camshaft timing gear and signal plate press-fitting tool, including a base plate 100, a clamping mechanism 200, a moving mechanism 300 and a pressing head 400.

[0033] Among them, the clamping mechanism 200 is arranged on the surface of the base plate 100, and the clamping mechanism 200 is used to clamp the shaft rod to reduce the possibility of movement of the shaft rod during the pressing process, so that the pressing is more stable and accurate. The moving mechanism 300 is used to move the pressing head 400 so that the pressing head 400 and the extruded workpiece can be pressed. The pressing head 400 and the moving mechanism 300 are connected in a detachable manner, which is convenient for disassembly and assembly of the pressing head 400. The operator can install pressing heads 400 of different specifications according to the specifications of workpieces such as camshaft timing gears and signal disks, thereby reducing the possibility of pressing failure caused by the mismatch between the specifications of the pressing head 400 and the specifications of the workpiece, and improving the stability of the pressing.

[0034] See also Figure 1-2 A bracket 110 is fixed to the lower end surface of the base plate 100, and a walking wheel 120 is installed at the bottom end of the bracket 110. The walking wheels 120 are arranged opposite to each other in pairs. Adding the walking wheels 120 is beneficial to the movement of the bracket 110 and the base plate 100. The walking wheels 120 can be self-locking universal wheels. The bracket 110 and the base plate 100 can be fixedly connected by welding.

[0035] See also Figure 1-2 The clamping mechanism 200 includes a first positioning seat 210 and a second positioning seat 220. The first positioning seat 210 and the second positioning seat 220 are both installed on the surface of the base plate 100, and a clamp 230 is installed on the surface of the first positioning seat 210 and the second positioning seat 220. In a specific implementation, the clamp 230 is used to clamp and fix workpieces such as shafts and rods, thereby reducing the possibility of movement of workpieces such as shafts and rods during the press-fitting process, making the press-fitting process more stable and precise. The clamp 230 can be a pneumatic clamp.

[0036] In this embodiment, the first positioning seat 210 and the second positioning seat 220 are coaxially arranged, so that the two clamps 230 can be coaxially arranged, and the clamps 230, the pressing head 400 and the telescopic member 330 are coaxially arranged, which is conducive to positioning between workpieces.

[0037] See also Figure 1-3The moving mechanism 300 includes a third positioning seat 310 and a support seat 320. The third positioning seat 310 is slidably installed on the surface of the base plate 100, and the support seat 320 is fixed on the surface of the base plate 100. A telescopic member 330 is installed on the surface of the support seat 320. The piston end of the telescopic member 330 is fixedly connected to the third positioning seat 310. In a specific implementation, when the telescopic member 330 is extended or contracted, it can drive the third positioning seat 310 to move, thereby driving the pressure head 400 to move. The telescopic member 330 can be a cylinder, an electric cylinder, an electric push rod or a hydraulic cylinder.

[0038] In the present embodiment, the upper end surface of the base plate 100 is provided with a guide rail 130, and the third positioning seat 310 is slidably sleeved on the guide rail 130. The addition of the guide rail 130 is conducive to limiting the moving direction of the third positioning seat 310, making the movement of the third positioning seat 310 more stable, and reducing the possibility of the third positioning seat 310 deviating from the established track during the movement; the piston end of the telescopic member 330 and the third positioning seat 310 are detachably connected by the connecting member 340, which is conducive to the operator to disassemble and assemble the third positioning seat 310 and to replace the third positioning seat 310; further, the connecting member 340 includes a first connecting head 341 and a second connecting head 342, the first connecting head 341 is installed on the piston end of the telescopic member 330, and the second connecting head 342 is installed on the third positioning seat 310 On the surface, the first connecting head 341 is provided with an internally threaded cylindrical pin 343, and the second connecting head 342 is provided with a countersunk hole and a long hole 344, and a round wire coil spring 345 is arranged in the countersunk hole of the second connecting head 342. The internally threaded cylindrical pin 343 is inserted into the first connecting head 341. After the first connecting head 341 is combined with the internally threaded cylindrical pin 343, it can move within a limited range of the countersunk hole and the long hole of the second connecting head 342, and the first connecting head 341 and the second connecting head 342 can be fixed together, thereby connecting the telescopic member 330 and the third positioning seat 310 together.

[0039] See also Figure 1 , Figure 2 and Figure 4 A flange 410 is installed on the surface of the pressure head 400, and a connecting pin 420 is installed on the surface of the third positioning seat 310. One end of the connecting pin 420 is plugged and connected with the flange 410. In a specific implementation, the movement of the third positioning seat 310 can drive the pressure head 400 to move, which is beneficial for the pressure head 400 to squeeze the workpiece and press the workpiece. It can be understood that the flange 410 and the third positioning seat 310 are connected together by the connecting pin 420, which is beneficial for the disassembly and assembly of the flange 410, thereby making the disassembly and assembly of the pressure head 400 more convenient, and facilitating the operator to replace the pressure head 400.

[0040] In this embodiment, a timing gear phase positioning pin 430, a camshaft phase positioning pin 440 and a timing gear anti-error pin 450 are provided at one end of the pressing head 400. The timing gear phase positioning pin 430 is provided to facilitate positioning of the timing gear, and the camshaft phase positioning pin 440 is added to facilitate positioning of the camshaft, and the timing gear anti-error pin 450 is added to facilitate anti-error positioning of the heated timing gear, thereby improving the accuracy of subsequent press-fitting; the timing gear phase positioning pin 430 and the camshaft phase positioning pin 440 are arranged in the same phase, which can improve the accuracy of press-fitting of the timing gear and the camshaft; the pressing head 400 is set to be cylindrical, and the flange 410 The surface of the pressure head 400 is sleeved, and the connection between the flange 410 and the pressure head 400 is integrally formed, which can improve the connection strength between the flange 410 and the pressure head 400; a countersunk hole is opened on the surface of the third positioning seat 310, and a through hole is opened on the surface of the flange 410. The threaded section of the connecting pin 420 passes through the countersunk hole and the through hole in turn, and the head of the connecting pin 420 is immersed in the countersunk hole. The connecting pin 420 is a threaded pin, and the countersunk hole and the through hole are added to facilitate the installation of the connecting pin 420. Threads can be set inside the countersunk hole and the through hole, and the connecting pin 420 can be installed in the countersunk hole and the through hole by threaded connection.

[0041] Specifically, the working principle of the high-precision camshaft timing gear and signal plate press-fitting tool is as follows: when in use, the camshaft and other shafts are clamped and fixed by the clamp 230, and the timing gear, signal plate and other workpieces are installed on one end of the pressure head 400, and the telescopic member 330 is adjusted to extend or contract, which can drive the third positioning seat 310 to move, thereby driving the pressure head 400 to move, and the workpiece on one side of the pressure head 400 can move toward the shaft, and the workpiece and the shaft can be press-fitted. During the press-fitting process, the clamp 230 clamps and fixes the shaft to reduce the possibility of movement of the shaft, making the press-fitting process more stable and accurate. In addition, the connecting pin 420 is used Connecting the flange 410 and the third positioning seat 310 together facilitates the disassembly and assembly of the flange 410, thereby making the disassembly and assembly of the pressing head 400 more convenient and facilitating the operator to replace the pressing head 400. The operator can install pressing heads 400 of different specifications according to the specifications of workpieces such as timing gears and signal plates, thereby reducing the possibility of press-fitting failure caused by the mismatch between the specifications of the pressing head 400 and the specifications of the workpiece, and improving the stability of the press-fitting.

[0042] It should be noted that the specific model specifications of the clamp 230 and the telescopic member 330 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0043] The power supply and principle of the clamp 230 and the telescopic member 330 are clear to those skilled in the art and will not be described in detail here.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision camshaft timing gear and signal plate press-fitting tool, characterized in that: include Bottom plate (100); A clamping mechanism (200), the clamping mechanism (200) comprising a first positioning seat (210) and a second positioning seat (220), the first positioning seat (210) and the second positioning seat (220) being both mounted on the surface of the base plate (100), and clamps (230) being mounted on the surfaces of the first positioning seat (210) and the second positioning seat (220); A moving mechanism (300), the moving mechanism (300) comprising a third positioning seat (310) and a support seat (320), the third positioning seat (310) being slidably mounted on the surface of the base plate (100), the support seat (320) being fixed on the surface of the base plate (100), a telescopic member (330) being mounted on the surface of the support seat (320), and a piston end of the telescopic member (330) being fixedly connected to the third positioning seat (310); A pressure head (400), wherein a flange (410) is mounted on the surface of the pressure head (400), and a connecting pin (420) is mounted on the surface of the third positioning seat (310), and one end of the connecting pin (420) is plugged and connected to the flange (410); The piston end of the telescopic member (330) and the third positioning seat (310) are detachably connected via a connecting member (340), the connecting member (340) comprising a first connecting head (341) and a second connecting head (342), the first connecting head (341) being mounted on the piston end of the telescopic member (330), the second connecting head (342) being mounted on the surface of the third positioning seat (310), the first connecting head (341) being provided with an internally threaded cylindrical pin (343), the second connecting head (342) being provided with a countersunk hole and a long hole (344), and a round wire coil spring (345) being arranged in the countersunk hole of the second connecting head (342), the internally threaded cylindrical pin (343) being plugged into the first connecting head (341), and the first connecting head (341) and the internally threaded cylindrical pin (343) being able to move in the countersunk hole and the long hole of the second connecting head (342) after being combined; One end of the pressure head (400) is provided with a timing gear phase positioning pin (430), a camshaft phase positioning pin (440) and a timing gear anti-misalignment pin (450); The timing gear phase positioning pin (430) and the camshaft phase positioning pin (440) are arranged in the same phase.

2. A high-precision camshaft timing gear and signal plate press-fitting tool as claimed in claim 1, characterized in that: A bracket (110) is fixed to the lower end surface of the bottom plate (100), and running wheels (120) are installed at the bottom end of the bracket (110), and the running wheels (120) are arranged in pairs opposite to each other.

3. A high-precision camshaft timing gear and signal plate press-fitting tool as claimed in claim 1, characterized in that: The first positioning seat (210) and the second positioning seat (220) are coaxially arranged, and the clamp (230), the pressing head (400) and the telescopic member (330) are coaxially arranged.

4. A high-precision camshaft timing gear and signal plate press-fitting tool as claimed in claim 1, characterized in that: The upper end surface of the bottom plate (100) is provided with a guide rail (130), and the third positioning seat (310) is slidably sleeved on the guide rail (130).

5. The high-precision camshaft timing gear and signal plate press-fitting tool according to claim 1, characterized in that: The pressure head (400) is configured to be cylindrical, the flange (410) is sleeved on the surface of the pressure head (400), and the connection between the flange (410) and the pressure head (400) is integrally formed.

6. A high-precision camshaft timing gear and signal plate press-fitting tool as claimed in claim 1, characterized in that: A countersunk hole is formed on the surface of the third positioning seat (310), a through hole is formed on the surface of the flange (410), a threaded section of the connecting pin (420) passes through the countersunk hole and the through hole in sequence, and a head of the connecting pin (420) is immersed in the countersunk hole; the connecting pin (420) is a threaded pin.

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