Piston rod clamping tool

Abstract

The utility model discloses a piston rod clamping tool which comprises a clamping seat and a fixing piece, the fixing piece is arranged on the clamping seat, a plurality of positioning pieces are arranged on the clamping seat, and the positioning pieces are used for fixing the fixing piece. A first receding groove, a limiting part and a second receding groove are formed in the surface of the fixing piece, the piston rod comprises a rod body and a communicating part, the limiting part is arranged in a sunken mode and matched with the communicating part in structure, and the first receding groove and the second receding groove are matched with the rod bodies on the two sides of the communicating part respectively; two groups of pressing assemblies are arranged above the fixing piece; the fixing pieces can be clamped and fixed through the positioning pieces, the fixing pieces are provided with the first receding grooves, the second receding grooves, the limiting parts and the pressing assemblies, the piston rods are arranged on the fixing pieces and pressed through the pressing assemblies, and during machining, the multiple fixing pieces with the clamped piston rods can be used for standby application; and after one part is machined, the current fixing piece is detached from the clamping base, the fixing piece to be machined and assembled with the piston rod is replaced, operation is convenient and fast, and the machining efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing and specifically to a piston rod clamping tool. Background Art

[0002] Piston rods are usually used in engines. Piston rods are important driving parts. The quality of piston rods directly affects the power, service life and energy consumption of the engine. Therefore, the processing accuracy of piston rods needs to be guaranteed when processing piston rods. The existing piston rod processing method is usually to fix it on a fixed tooling for turning, grinding or drilling, but the existing fixed tooling has a complex structure and a large size. After processing a part, the clamping tooling needs to be disassembled and the new part needs to be installed on site for processing. The operation process is complicated and cumbersome, and the processing efficiency is low. Utility Model Content

[0003] The utility model aims to provide a piston rod clamping tool. After the piston rod is fixed by a fixing piece, the clamping seat can quickly fix the fixing piece for processing. The structure is simple and the clamping is convenient.

[0004] The utility model is realized by the following technical solutions:

[0005] A piston rod clamping tool comprises a clamping seat and a fixing piece, wherein the fixing piece is arranged on the clamping seat, and at least two positioning pieces are arranged on the clamping seat, and the positioning pieces are slidably matched with the clamping seat, and the positioning pieces are used to fix the fixing piece; a first clearance groove and a second clearance groove are arranged on the surface of the fixing piece, and a limiting portion is arranged between the first clearance groove and the second clearance groove; the piston rod comprises a rod body and a connecting portion, and the connecting portion is arranged in the middle section of the rod body, and the limiting portion is recessed and matched with the structure of the connecting portion, and the first clearance groove and the second clearance groove are respectively matched with the rod bodies on both sides of the connecting portion; two groups of clamping assemblies are arranged above the fixing piece, and the clamping assemblies are respectively arranged to abut the rod bodies on both sides of the connecting portion.

[0006] Furthermore, the clamping seat is provided with a mounting groove, the positioning member is provided on a side of the mounting groove, and the fixing member cooperates with the mounting groove.

[0007] Furthermore, the clamping assembly includes a pressing block and bolts. The lower surface of the pressing block is provided with an arc-shaped abutting surface, the abutting surface cooperates with the rod body of the piston rod, and the bolts are provided at both ends of the pressing block for fixing the pressing block.

[0008] Furthermore, a rubber pad is provided on the abutting surface of the pressing block, and the rubber pad is glued to the abutting surface.

[0009] Furthermore, the limiting portion of the fixing member includes a limiting groove, a first abutting portion and a second abutting portion, and the limiting groove is arranged between the first abutting portion and the second abutting portion; the communicating portion of the piston rod is provided with a connecting port, a first support ear and a second support ear, the connecting port is arranged in the limiting groove, the first support ear is arranged in the first abutting portion, and the second support ear is arranged in the second abutting portion.

[0010] Furthermore, three positioning members are arranged on the clamping seat, and the angles between the three positioning members are the same.

[0011] Furthermore, a positioning pin is provided on the side of the clamping seat, and a positioning hole is provided on the side of the fixing piece. After the fixing piece is embedded in the clamping seat, the positioning pin is inserted into the positioning hole to fix the fixing piece.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] 1) In the utility model, a plurality of positioning members are arranged on the clamping seat, and the fixing members are arranged between the positioning members. The fixing members can be clamped and fixed by the positioning members. The fixing members are provided with a first clearance groove, a second clearance groove, a limit portion and a clamping assembly. The piston rod is arranged on the fixing member and clamped by the clamping assembly. During processing, a plurality of fixing members with clamped piston rods can be used as spares. After processing a part, the current fixing member can be removed from the clamping seat, and then the fixing member with assembled piston rod to be processed can be replaced. The operation is convenient and quick, and the processing efficiency is high.

[0014] 2) In the utility model, a first abutting portion, a second abutting portion and a limiting groove are provided in the limiting portion. The first abutting portion, the limiting groove and the second abutting portion respectively cooperate with the structures of the first ear, the connecting port and the second ear of the piston rod connecting portion, so that the connecting portion of the piston rod is stable in the limiting portion, thereby further improving the processing accuracy of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0016] Figure 1 It is an exploded view of the piston rod clamping tooling of the utility model.

[0017] Figure 2 It is a structural schematic diagram of a fixing part in a piston rod clamping tooling of the utility model.

[0018] Figure 3The utility model is a schematic diagram of the assembly structure of the fixing part and the piston rod in the piston rod clamping tool.

[0019] Figure 4 It is a structural schematic diagram of the piston rod in the utility model.

[0020] Among them: 1-clamping seat, 11-positioning pin, 2-positioning member, 3-fixing member, 31-first make way groove, 32-second make way groove, 33-limiting part, 331-first abutting part, 332-limiting groove, 333-second abutting part, 34-positioning hole, 4-clamping assembly, 41-pressing block, 42-bolt, 5-piston rod, 51-rod body, 52-connecting part, 521-first support ear, 522-connecting port, 523-second support ear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0022] Embodiment 1:

[0023] The main structure of this embodiment is a piston rod clamping tool, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a clamping seat 1 and a fixing member 3, the fixing member 3 is arranged on the clamping seat 1, and at least two positioning members 2 are arranged on the clamping seat 1, the positioning member 2 is connected with the clamping seat 1 in a sliding manner, and the positioning member 2 is used to fix the fixing member 3; the surface of the fixing member 3 is provided with a first clearance groove 31 and a second clearance groove 32, and a limiting portion 33 is arranged between the first clearance groove 31 and the second clearance groove 32, the piston rod 5 includes a rod body 51 and a connecting portion 52, the connecting portion 52 is arranged in the middle section of the rod body 51, the limiting portion 33 is recessed and matched with the structure of the connecting portion 52, the first clearance groove 31 and the second clearance groove 32 are respectively connected to the rod body 51 on both sides of the connecting portion 52 Matching; two groups of clamping components 4 are arranged above the fixing part 3, and the clamping components 4 are respectively arranged to abut the rod body 51 on both sides of the connecting part 52; a mounting groove is arranged on the clamping seat 1, and the positioning member 2 is arranged on the side of the mounting groove, and the fixing part 3 matches with the mounting groove; the clamping component 4 includes a pressing block 41 and a bolt 42, and the lower surface of the pressing block 41 is provided with an arc-shaped abutting surface, and the abutting surface matches with the rod body 51 of the piston rod 5, and the bolt 42 is arranged at both ends of the pressing block 41 for fixing the pressing block 41; a rubber pad is arranged on the abutting surface of the pressing block 41, and the rubber pad is glued to the abutting surface; three positioning members 2 are arranged on the clamping seat 1, and the angles between the three positioning members 2 are the same.

[0024] The clamping seat 1 is a cylindrical base, which is connected to an external lathe. A mounting groove is provided on the clamping seat 1, and three positioning members 2 are provided on the side of the mounting groove. The positioning members 2 are slidably matched with the clamping seat 1, and the angles between adjacent positioning members 2 are the same. The fixing member 3 is inserted into the mounting groove, and after the positioning member 2 is adjusted to clamp the fixing member 3, each positioning member 2 is fixed in turn by the screws at the bottom of the clamping seat 1, and the screws abut against the bottom of the positioning member 2 inside the fixing seat to stabilize the positioning member 2; a first clearance groove 31, a second clearance groove 32 and a limiting portion 33 are provided on the surface of the fixing member 3, and the limiting portion 33 is provided between the first clearance groove 31 and the second clearance groove 32; the piston rod 5 includes a rod body 51 and a connecting portion 52, and the connecting portion 52 is provided in the middle section of the rod body 51, and the limiting portion 33 is recessed and matched with the structure of the connecting portion 52, and the two ends of the rod body 51 are respectively It is arranged in the first give way groove 31 and the second give way groove 32. The first give way groove 31 and the second give way groove 32 are preferably a concave curved surface structure, which can cooperate with the rod body 51 structure; a clamping assembly 4 is arranged on the fixing piece 3 for clamping and fixing the piston rod 5. The clamping assembly 4 includes a clamping block 41 and a bolt 42. An arc-shaped abutting surface is arranged on the clamping block 41, and the abutting surface cooperates with the rod body 51 of the piston rod 5. The two clamping blocks 41 are respectively arranged at the left and right sides of the connecting portion 52, and abut against the surface of the rod body 51. At the same time, a rubber pad is glued on the abutting surface of the clamping block 41, and the rubber pad is connected to the surface of the rod body 51. The rubber pad can prevent the surface of the rod body 51 from being worn, and at the same time, it can increase the friction between the clamping block 41 and the rod body 51 to prevent the piston rod 5 from rotating. Bolts 42 are respectively arranged at both ends of the clamping block 41, and the bolts 42 pass through the clamping block 41 and are threadedly connected to the fixing piece 3.

[0025] Embodiment 2:

[0026] The present embodiment further defines the fixing member 3 on the basis of the above-mentioned embodiment, the limiting portion 33 of the fixing member 3 comprises a limiting groove 332, a first abutting portion 331 and a second abutting portion 333, the limiting groove 332 is arranged between the first abutting portion 331 and the second abutting portion 333; the communicating portion 52 of the piston rod 5 is provided with a connecting port 522, a first support ear 521 and a second support ear 523, the connecting port 522 is arranged in the limiting groove 332, the first support ear 521 is arranged in the first abutting portion 331, and the second support ear 523 is arranged in the second abutting portion 333; a positioning pin 11 is arranged on the side of the clamping seat 1, and a positioning hole 34 is arranged on the side of the fixing member 3, after the fixing member 3 is embedded in the clamping seat 1, the positioning pin 11 is inserted into the positioning hole 34 to fix the fixing member 3.

[0027] The limiting portion 33 of the fixing member 3 includes a limiting groove 332, a first abutting portion 331 and a second abutting portion 333. The limiting groove 332, the first abutting portion 331 and the second abutting portion 333 are all concave structures. The first abutting portion 331 and the second abutting portion 333 are respectively arranged on both sides of the limiting groove 332. The depth of the first abutting portion 331 and the second abutting portion 333 is less than the depth of the limiting groove 332. The connecting portion 52 of the piston rod 5 includes a connecting port 522, a first support ear 521 and a second support ear 523. The structure of the first abutting portion 331 cooperates with the first support ear 521. The connection port 522 is arranged in the limiting groove 332, the structure of the second abutting portion 333 matches the second support ear 523, the second support ear 523 is arranged in the second abutting portion 333, and the piston rod 5 is fixed by the clamping assembly 4; the side of the clamping seat 1 is provided with a positioning pin 11, the positioning pin 11 is connected with the mounting groove of the clamping seat 1, and the side of the fixing member 3 is provided with a positioning hole 34. After the fixing member 3 is placed in the mounting groove, the positioning pin 11 is inserted into the positioning hole 34, and the positioning member 2 is adjusted so that the positioning member 2 clamps and fixes the fixing member 3, and then the piston rod 5 can be subsequently opened or polished. The other parts of this embodiment are the same as the above embodiment, and will not be repeated here.

[0028] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when used. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0029] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A piston rod clamping tool, characterized in that: It includes a clamping seat and a fixing member, the fixing member is arranged on the clamping seat, and at least two positioning members are arranged on the clamping seat, the positioning members are slidably connected with the clamping seat, and the positioning members are used to fix the fixing member; a first clearance groove and a second clearance groove are arranged on the surface of the fixing member, and a limiting portion is arranged between the first clearance groove and the second clearance groove; the piston rod includes a rod body and a connecting portion, the connecting portion is arranged in the middle section of the rod body, the limiting portion is recessed and matched with the structure of the connecting portion, and the first clearance groove and the second clearance groove are respectively matched with the rod bodies on both sides of the connecting portion; two groups of clamping components are arranged above the fixing member, and the clamping components are respectively arranged to abut the rod bodies on both sides of the connecting portion.

2. The piston rod clamping tool as claimed in claim 1, characterized in that: The clamping seat is provided with a mounting groove, the positioning piece is arranged on the side of the mounting groove, and the fixing piece matches with the mounting groove.

3. The piston rod clamping tool as claimed in claim 1, characterized in that: The clamping assembly includes a pressing block and bolts. The lower surface of the pressing block is provided with an arc-shaped abutting surface, and the abutting surface matches with the rod body of the piston rod. The bolts are provided at both ends of the pressing block for fixing the pressing block.

4. The piston rod clamping tool as claimed in claim 3, characterized in that: A rubber pad is arranged on the abutting surface of the pressing block, and the rubber pad is glued to the abutting surface.

5. The piston rod clamping tool as claimed in claim 1, characterized in that: The limiting portion of the fixing member includes a limiting groove, a first abutting portion and a second abutting portion, wherein the limiting groove is arranged between the first abutting portion and the second abutting portion; the communicating portion of the piston rod is provided with a connecting port, a first support ear and a second support ear, wherein the connecting port is arranged in the limiting groove, the first support ear is arranged in the first abutting portion, and the second support ear is arranged in the second abutting portion.

6. The piston rod clamping tool as claimed in claim 1, characterized in that: The clamping seat is provided with three positioning members, and the angles between the three positioning members are the same.

7. The piston rod clamping tool as claimed in claim 1, characterized in that: A positioning pin is arranged on the side of the clamping seat, and a positioning hole is arranged on the side of the fixing piece. After the fixing piece is embedded in the clamping seat, the positioning pin is inserted into the positioning hole to fix the fixing piece.

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