Clamping tool for processing bottom surface of camshaft seat

Abstract

The utility model belongs to the technical field of camshaft seat processing, and provides a clamping tool for processing the bottom surface of a camshaft seat, which comprises a tool base, the guide rods and the positioning pins are used for positioning the cam shaft seat, the supporting nails and the floating supporting cylinders are used for supporting the cam shaft seat, the pressing mechanism is used for pressing the cam shaft seat, the guide rods are vertically arranged and arranged in a triangular shape, and the positioning pins are close to the two ends of the tool base respectively. The supporting nails are located at the two ends of the tool base respectively and arranged in a triangular mode, the floating supporting cylinders are sequentially arranged on the tool base, and the pressing and holding mechanisms correspond to the supporting nails and / or the floating supporting cylinders respectively. According to the clamping device, accurate positioning and clamping of the cam shaft seat can be achieved, clamping is firm and reliable, deformation of the cam shaft seat cannot be caused, in addition, clamping and disassembling operation of the cam shaft seat is easy and convenient, and therefore the machining efficiency and the machining quality of the cam shaft seat are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft seat processing, in particular to a clamping tool for processing the bottom surface of a camshaft seat. Background Art

[0002] The camshaft seat is a component that fixes the camshaft. It is usually located in the engine cylinder and is an important component in the engine. It is directly related to the performance and operating efficiency of the engine. The design and manufacturing quality of the camshaft seat directly affects the normal operation of the camshaft, and then affects the opening and closing timing of the valve, which is a key factor in controlling the engine combustion process.

[0003] like Figure 1 As shown, a camshaft seat structure assembled in an engine cylinder block is shown. During its production and processing, its top and bottom surfaces need to be processed in sequence to meet the assembly and use requirements of the camshaft seat 1. Before processing the bottom surface of the camshaft seat 1, the camshaft seat 1 needs to be clamped and fixed to the corresponding clamping tooling to achieve the positioning, installation and fixation of the camshaft seat 1, ensuring the effective processing of the camshaft seat 1.

[0004] At present, most of the tooling fixtures used for clamping and fixing the camshaft seat have complex structures, and the clamping operation of the camshaft seat is cumbersome and inconvenient, making it difficult to accurately position and firmly clamp the camshaft seat, which directly affects the processing quality and efficiency of the camshaft seat. In addition, since the camshaft seat wall is thin and easy to deform, the clamping of the camshaft seat is difficult. If the clamping operation is improper, the camshaft seat will also be deformed, which will directly lead to the scrapping of the product. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0006] Specifically, the technical problem to be solved by the utility model is to provide a clamping tool for processing the bottom surface of a camshaft seat, so as to solve the technical problem that the current camshaft seat clamping structure is complex in structure, and the clamping operation of the camshaft seat is cumbersome and inconvenient, and it is difficult to achieve accurate positioning and placement of the camshaft seat and firm clamping and fixing, which directly affects the processing quality and processing efficiency of the camshaft seat.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] A clamping tool for machining the bottom surface of a camshaft seat, comprising a tooling base. On the tooling base, there are guide rods and positioning pins for positioning the camshaft seat, support pins and floating support cylinders for supporting the camshaft seat, and a pressing mechanism for pressing the camshaft seat. The guide rods are vertically arranged and arranged in a triangular position. The positioning pins are respectively close to both ends of the tooling base. The support pins are respectively located at both ends of the tooling base and arranged in a triangular position. The floating support cylinders are arranged in sequence on the tooling base. The pressing mechanism corresponds to the support pins and / or the floating support cylinders respectively.

[0009] As an improved technical solution, there are three guide rods which are fixedly installed on the tooling base. Two of the guide rods are arranged side by side near one side of the tooling base, and the other guide rod is arranged near one end of the tooling base.

[0010] As an improved technical solution, the positioning pins include a cylindrical positioning pin and a diamond-shaped positioning pin. The cylindrical positioning pin and the diamond-shaped positioning pin are respectively arranged near both ends of the tooling base.

[0011] As an improved technical solution, there are three support pins which are fixedly installed on the tooling base. Two of the support pins are respectively located at the corner of one end of the tooling base, and the other support pin is arranged at the other end of the tooling base.

[0012] As an improved technical solution, the floating support cylinders include a first floating support cylinder for circumferentially assisting in supporting the top surface of the camshaft seat and a second floating support cylinder for assisting in supporting the connecting beam of the camshaft seat. The first floating support cylinders are respectively arranged near both sides and both ends of the tooling base, and the second floating support cylinders are arranged in sequence at the middle position of the tooling base.

[0013] As an improved technical solution, the pressing mechanism includes lever oil cylinders. There are several lever oil cylinders, and several lever oil cylinders are respectively correspondingly arranged with at least part of the floating support cylinders.

[0014] As an improved technical solution, the lever oil cylinders include a first lever oil cylinder and a second lever oil cylinder. The first lever oil cylinder is respectively correspondingly arranged with at least part of the first floating support cylinders, and the second lever oil cylinder is respectively correspondingly arranged with at least part of the second floating support cylinders.

[0015] As an improved technical solution, the clamping surface of the tooling base is an inclined chip guiding surface.

[0016] After adopting the above technical solutions, the beneficial effects of the present utility model are:

[0017] When using this clamping fixture for machining the bottom surface of the camshaft seat, during the positioning and clamping of the camshaft seat, the top surface of the camshaft seat is oriented towards the clamping surface of the fixture base, and it is ensured that the camshaft seat abuts against each guide rod to achieve preliminary positioning of the camshaft seat. Then, the camshaft seat is placed. During the placement process, the positioning pin achieves the positioning of the camshaft seat. When the camshaft seat abuts against the support pins, the positioning and placement of the camshaft seat are achieved. After that, each floating support cylinder operates and contacts the camshaft seat to achieve auxiliary support for the camshaft seat. Finally, the pressing mechanism works to achieve the pressing of the camshaft seat, firmly fixing the camshaft seat on the fixture base. In this way, the positioning and clamping of the camshaft seat on this clamping fixture can be completed.

[0018] After the machining of the camshaft seat is completed, the pressing mechanism resets to release the pressing on the camshaft seat, and then the machined camshaft seat can be removed from this clamping fixture. After the camshaft seat is removed, each floating support cylinder resets, and then the positioning and clamping of the next camshaft seat can be carried out. This process is repeated.

[0019] Through this clamping fixture for machining the bottom surface of the camshaft seat, not only can the accurate positioning and clamping of the camshaft seat be achieved, the clamping is firm and reliable, and it will not cause deformation of the camshaft seat. In addition, the clamping and disassembly operations of the camshaft seat are simple and convenient, thus greatly improving the machining efficiency and machining quality of the camshaft seat and meeting the usage requirements of the camshaft seat for production and machining on the assembly line. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 It is a schematic structural diagram of the camshaft seat of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the clamping fixture for machining the bottom surface of the camshaft seat of the present invention;

[0023] Figure 3 It is another three-dimensional structural diagram of the clamping fixture for machining the bottom surface of the camshaft seat of the present invention;

[0024] Figure 4 It is a schematic top view structural diagram of the clamping fixture for machining the bottom surface of the camshaft seat of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the positioning and placement state of the camshaft seat of the present invention on the clamping fixture for machining the bottom surface of the camshaft seat;

[0026] Figure 6 Another three-dimensional structural schematic diagram of the clamping fixture for machining the bottom surface of the camshaft seat of the present utility model in the positioning and placing state on the bottom surface of the camshaft seat;

[0027] Figure 7 A mounting structural schematic diagram of the positioning pin and the second floating support cylinder of the present utility model on the first mounting seat;

[0028] Reference numerals: 1 - camshaft seat; 101 - connecting beam; 2 - tooling base; 3 - guide rod; 4 - positioning pin; 5 - support pin; 6 - first floating support cylinder; 7 - second floating support cylinder; 8 - first mounting seat; 9 - second mounting seat; 10 - first lever oil cylinder; 11 - second lever oil cylinder. Specific embodiments

[0029] The present utility model will be further described below in conjunction with specific embodiments. However, the uses and purposes of these exemplary embodiments are only used to illustrate the present utility model, and do not constitute any form of limitation to the actual protection scope of the present utility model, nor will the protection scope of the present utility model be limited thereto.

[0030] As Figures 1 to 7 Collectively shown, this embodiment provides a clamping fixture for machining the bottom surface of a camshaft seat, including a tooling base 2. On the tooling base 2, there are provided a guide rod 3 and a positioning pin 4 for positioning the camshaft seat 1, a support pin 5 and a floating support cylinder for supporting the camshaft seat 1, and a pressing mechanism for pressing the camshaft seat 1. The guide rod 3 is vertically arranged and arranged in a triangular position. The positioning pins 4 are respectively close to both ends of the tooling base 2. The support pins 5 are respectively located at both ends of the tooling base 2 and arranged in a triangular position. The floating support cylinders are arranged in sequence on the tooling base 2. The pressing mechanism corresponds to the support pins 5 and / or the floating support cylinders respectively.

[0031] As Figures 2 to 6 Collectively shown, in one embodiment, there are three guide rods 3 which are fixedly installed on the tooling base 2. Two of the guide rods 3 are arranged side by side close to one side of the tooling base 2, and the other guide rod 3 is arranged close to one end of the tooling base 2. When clamping the camshaft seat 1, the top surface of the camshaft seat 1 faces the clamping surface of the tooling base 2 and it is ensured that the camshaft seat 1 abuts against each guide rod 3, which can realize the pre-positioning of the camshaft seat 1. The guide rod 3 plays a guiding role when placing the camshaft seat 1, ensuring the accurate placement and positioning of the camshaft seat 1.

[0032] As Figures 2 to 4As shown together, in one embodiment, the positioning pins 4 include cylindrical positioning pins 4 and diamond-shaped positioning pins 4. The cylindrical positioning pins 4 and the diamond-shaped positioning pins 4 are respectively arranged near both ends of the tooling base 2. The positioning pins 4 play a role in positioning the camshaft seat 1, enabling precise positioning of the camshaft seat 1. The cylindrical positioning pins 4 and the diamond-shaped positioning pins 4 cooperate to avoid over-positioning of the camshaft seat 1.

[0033] As Figures 2 to 4 As shown together, in one embodiment, two first mounting seats 8 are fixedly installed on the tooling base 2 and are respectively arranged near both ends of the tooling base 2. The positioning pins 4 are respectively fixedly installed on the first mounting seats 8.

[0034] As Figures 2 to 6 As shown together, in one embodiment, three supporting pins 5 are fixedly installed on the tooling base 2. Two of the supporting pins 5 are respectively located at the corner of one end of the tooling base 2, and the other supporting pin 5 is arranged at the other end of the tooling base 2. During the placement of the camshaft seat 1, the positioning pins 4 achieve the positioning of the camshaft seat 1. When the top surface of the camshaft seat 1 contacts the supporting pins 5, the supporting pins 5 achieve the positioning and support of the camshaft seat 1.

[0035] As Figures 1 to 6 As shown together, in one embodiment, the floating support cylinders include a first floating support cylinder 6 for realizing the circumferential auxiliary support of the top surface of the camshaft seat 1 and a second floating support cylinder 7 for realizing the auxiliary support of the connecting beam 101 of the camshaft seat 1. The first floating support cylinders 6 are respectively arranged near both sides and both ends of the tooling base 2, that is, arranged in sequence along the contour of the top surface of the camshaft seat 1. The second floating support cylinders 7 are respectively arranged at the middle position of the tooling base 2, that is, corresponding to the positions of the connecting beams 101 of the camshaft seat 1 respectively. After the camshaft seat 1 is placed on the supporting pins 5, the floating support cylinders work to achieve the auxiliary support of the camshaft seat 1. Specifically, the first floating support cylinder 6 contacts the top surface of the camshaft seat 1 to achieve the support of the top surface of the camshaft seat 1, and the second floating support cylinder 7 contacts the connecting beam 101 of the camshaft seat 1 to achieve the support of the connecting beam 101 of the camshaft seat 1. In this way, the stable support of the camshaft seat 1 is achieved.

[0036] As Figures 2 to 7 As shown together, in one embodiment, several second mounting seats 9 are fixedly installed at the middle position of the tooling base 2. The second floating support cylinders 7 are respectively fixedly installed on the first mounting seats 8 and the second mounting seats 9.

[0037] As Figures 2 to 6As shown together, in one embodiment, the pressing mechanism includes lever oil cylinders. There are several lever oil cylinders, and several lever oil cylinders are respectively arranged corresponding to at least some of the floating support cylinders. The lever oil cylinders can realize the automatic pressing of the camshaft seat 1, achieve firm clamping and fixing of the camshaft seat 1, and make the clamping and disassembly operations of the camshaft seat 1 simple and convenient.

[0038] As Figures 2 to 6 As shown together, in one embodiment, the lever oil cylinders include a first lever oil cylinder 10 and a second lever oil cylinder 11. The first lever oil cylinder 10 is respectively arranged corresponding to at least some of the first floating support cylinders 6. The first lever oil cylinder 10 cooperates with the first floating support cylinders 6 to achieve firm clamping of the camshaft seat 1. The second lever oil cylinder 11 is respectively arranged corresponding to at least some of the second floating support cylinders 7. The second lever oil cylinder 11 cooperates with the second floating support cylinders 7 to achieve firm clamping of the connecting beam 101 of the camshaft seat 1.

[0039] As Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown together, in one embodiment, the clamping surface of the tooling base 2 is an inclined chip guiding surface. The chip guiding surface can make the chips generated during the machining process fall off in time, avoiding the accumulation of machining chips on the tooling base 2.

[0040] When positioning and clamping the camshaft seat 1, the top surface of the camshaft seat 1 is oriented towards the clamping surface of the tooling base 2 and it is ensured that the camshaft seat 1 abuts against each guide rod 3 to achieve pre-positioning of the camshaft seat 1. Then, the camshaft seat 1 is lowered. During the placement process, the positioning pin 4 realizes the positioning of the camshaft seat 1. When the camshaft seat 1 abuts against the support pin 5, the positioning placement of the camshaft seat 1 is achieved. After that, each floating support cylinder acts and comes into contact with the camshaft seat 1 to achieve auxiliary support for the camshaft seat 1. Finally, each lever oil cylinder works to achieve the pressing of the camshaft seat 1 and firmly fix the camshaft seat 1 on the tooling base 2. In this way, the positioning and clamping of the camshaft seat 1 on this clamping tooling can be completed.

[0041] After the machining of the camshaft seat 1 is completed, each lever oil cylinder resets to release the pressing on the camshaft seat 1, and then the machined camshaft seat 1 can be removed from this clamping tooling. After the camshaft seat 1 is removed, each floating support cylinder resets, and then the positioning and clamping of the next camshaft seat 1 can be carried out. This process is repeated.

[0042] The clamping tooling for machining the bottom surface of the camshaft seat based on the above structure is simple in structure. By using this clamping tooling for machining the bottom surface of the camshaft seat 1, not only can the accurate positioning and clamping of the camshaft seat 1 be achieved, the clamping is firm and reliable, and it will not cause deformation of the camshaft seat 1. In addition, the clamping and disassembling operations of the camshaft seat 1 are simple and convenient, thus greatly improving the machining efficiency and machining quality of the camshaft seat 1 and meeting the use requirements of the assembly line production and machining of the camshaft seat 1.

[0043] It should be understood that the use of these embodiments is only for illustrating the present invention and is not intended to limit the protection scope of the present invention. In addition, it should also be understood that after reading the technical content of the present invention, those skilled in the art can make various changes, modifications and / or variations to the present invention, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A clamping tool for machining the bottom surface of a camshaft seat, characterized in that: It includes a tooling base, on which there are guide rods and positioning pins for positioning the camshaft seat, supporting pins and floating support cylinders for supporting the camshaft seat, and a pressing mechanism for pressing the camshaft seat. The guide rods are vertically arranged in a triangular position, the positioning pins are respectively close to both ends of the tooling base, the supporting pins are respectively located at both ends of the tooling base and arranged in a triangular position, the floating support cylinders are arranged in sequence on the tooling base, and the pressing mechanism corresponds to the supporting pins and / or the floating support cylinders respectively.

2. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 1, wherein: There are three guide rods which are fixedly installed on the tooling base. Two of the guide rods are arranged side by side near one side of the tooling base, and the other guide rod is arranged near one end of the tooling base.

3. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 1, characterized in that: The positioning pins include a cylindrical positioning pin and a diamond-shaped positioning pin, and the cylindrical positioning pin and the diamond-shaped positioning pin are respectively close to both ends of the tooling base.

4. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 1, wherein: There are three supporting pins which are fixedly installed on the tooling base. Two of the supporting pins are respectively located at the corner of one end of the tooling base, and the other supporting pin is arranged at the other end of the tooling base.

5. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 1, characterized in that: The floating support cylinders include a first floating support cylinder for circumferentially assisting in supporting the top surface of the camshaft seat and a second floating support cylinder for assisting in supporting the connecting beam of the camshaft seat. The first floating support cylinders are respectively close to both sides and both ends of the tooling base, and the second floating support cylinders are arranged in sequence at the middle position of the tooling base.

6. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 5, characterized in that: The pressing mechanism includes lever cylinders, and there are several lever cylinders, and several lever cylinders are respectively correspondingly arranged with at least part of the floating support cylinders.

7. The clamping tooling for machining the bottom surface of the camshaft seat according to claim 6, wherein: The lever cylinders include a first lever cylinder and a second lever cylinder. The first lever cylinder is respectively correspondingly arranged with at least part of the first floating support cylinders, and the second lever cylinder is respectively correspondingly arranged with at least part of the second floating support cylinders.

8. The clamping fixture for machining the bottom surface of the camshaft seat according to any one of claims 1-7, characterized in that: The clamping surface of the tooling base is an inclined chip guide surface.

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