Clamping tool for machining radial hole of piston rod

Abstract

The utility model discloses a clamping tool for processing a radial hole of a piston rod, which comprises a mounting plate, a clamping assembly is arranged on the outer wall of the top of the mounting plate and is used for clamping and limiting the piston rod, and the clamping assembly comprises a clamping unit and a clamping unit, a fixing plate is installed on the outer wall of the top of the connecting supporting rod, trapezoidal blocks are connected to the surface of the outer wall of the bottom of the fixing plate in a sliding mode, and clamping jaws are installed on the opposite faces of the two trapezoidal blocks. According to the clamping tool for machining the radial hole of the piston rod, rubber gaskets are arranged on the opposite faces of the two clamping jaws, the situation that scratches are generated on a chromium plating face when the clamping jaws clamp the piston rod is avoided, and the two sets of clamping jaws are arranged, so that the piston rod is clamped more stably; and the situation that the piston rod shakes during hole machining is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tooling, in particular to a clamping tooling used for machining radial holes of piston rods. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is mostly used in oil cylinders and cylinder motion actuators. It is a moving component that moves frequently and has high technical requirements. The quality of its processing directly affects the life and reliability of the entire product. The piston rod processing has high requirements and strict requirements on coaxiality and wear resistance. The basic feature of the cylinder rod is the processing of a slender shaft, which is difficult to process and has always troubled the processing personnel.

[0003] Referring to a Chinese patent for a clamping fixture for a piston rod with earrings (publication number: CN218015865U, publication date: 2022-12-13), the clamping fixture includes a claw assembly and a fixture base; the fixture base includes a cylindrical body, a clamping shaft located on the left side of the cylindrical body, and two side plates located on the right side of the cylindrical body, and the two side plates are symmetrically arranged on the cylindrical body, and the two side plates are symmetrically installed with a clamping mechanism for clamping the workpiece; an end face positioning top for positioning the workpiece is installed on the right side of the cylindrical body and at the axial center of the cylindrical body; the claw assembly fixes the fixture base to the chuck through the clamping shaft. The clamping fixture can be used to realize the existing standard three-jaw self-centering chuck. The fixture can be used by simply replacing the claws of the clamping fixture, and it has strong applicability.

[0004] However, the existing clamping tooling for machining radial holes in piston rods still has the following problems. During the machining of the piston rod, especially during the machining of its radial position, attention must be paid to protecting the surface of the piston rod, that is, to prevent scratches from being generated on the chrome-plated surface. When the piston rod is working, these scratches may damage the sealing ring of the hydraulic cylinder, leading to oil leakage. In the prior art, most of them are done by sticking tape between the machining end and the clamping end to isolate the iron filings generated when turning the piston rod. During the sticking process, not only is tape needed, resulting in a waste of resources, but the operation process is also increased. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a clamping tool for machining radial holes of a piston rod, which solves the problem of needing to use adhesive tape to isolate iron chips generated when turning the piston rod from impacting the chrome-plated surfaces of the machining end and the clamping end.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a clamping tool for piston rod radial hole processing, including a mounting plate, the top outer wall of the mounting plate is provided with a clamping assembly for clamping and limiting the piston rod, and the clamping assembly includes:

[0007] The clamping unit comprises a connecting rod mounted on the top outer wall of the mounting plate, a fixing plate is mounted on the top outer wall of the connecting rod, a trapezoidal block is slidably connected to the bottom outer wall surface of the fixing plate, and clamping claws are mounted on the opposite surfaces of the two trapezoidal blocks;

[0008] A linkage unit is provided between the two trapezoidal blocks and is used to drive the clamping jaws to perform relative movement;

[0009] The driving unit is arranged above the linkage unit and is used for performing up and down reciprocating motion operations.

[0010] Preferably, the linkage unit includes a driving support plate, T-slots are provided on the opposite surfaces of the two trapezoidal blocks, and sliders adapted to the T-slots are installed on the outer walls on both sides of the driving support plate, and the sliders are slidably connected to the T-slots, and an extension column is installed on the top outer wall of the driving support plate, and the extension column passes through and extends out of the fixed plate.

[0011] Preferably, the driving unit comprises a supporting block mounted on the top outer wall of the fixing plate, an extension plate is mounted on the top outer wall of the supporting block, and a lifting cylinder is mounted on the top outer wall of the extension plate.

[0012] Preferably, the output end of the lifting cylinder passes through and extends out of the extension plate, and the lifting plate is installed at the output end of the lifting cylinder, and lower pressure plates are installed at the left and right ends of the lifting plate, and the bottom outer wall of the lower pressure plate is fixed to the extension column.

[0013] Preferably, a shielding unit is provided on the top outer wall of the mounting plate to prevent debris from splashing onto the outer wall surface of the piston rod.

[0014] Preferably, the shielding unit includes a slide block, and a baffle is slidably connected inside the slide block. A sliding groove is opened on the top outer wall of the mounting plate, and a self-locking slider is slidably connected inside the sliding groove. The top outer wall of the self-locking slider is fixed to the bottom outer wall of the slide block.

[0015] Beneficial Effects

[0016] The utility model provides a clamping tool for machining radial holes of piston rods. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The clamping tool for machining radial holes of piston rods, by providing rubber gaskets on the opposite surfaces of two clamping jaws, avoids scratches on the chrome-plated surface when the clamping jaws clamp the piston rod, and by providing two sets of clamping jaws, the clamping of the piston rod is more stable, avoiding the shaking of the piston rod when the hole is machined.

[0018] (2) The clamping tool used for machining radial holes of piston rods has a shielding unit arranged on the top outer wall of the mounting plate, so that when the hole of the piston rod is being machined, a shielding sheet is sleeved on the surface of the piston rod, thereby preventing iron filings generated during turning of the piston rod from splashing between the machining end and the clamping end, thereby preventing scratches on the chrome-plated surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a right view of the external structure of the utility model;

[0020] Figure 2 It is a left view of the external structure of the utility model;

[0021] Figure 3 It is a bottom view of the local structure of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the linkage unit structure of the utility model.

[0023] In the figure: 1-mounting plate, 2-clamping assembly, 3-clamping unit, 31-connecting support rod, 32-fixed plate, 33-trapezoidal block, 34-clamping claw, 4-linkage unit, 41-driving support plate, 42-T-slot, 43-extension column, 5-driving unit, 51-support block, 52-extension plate, 53-lifting cylinder, 54-lifting plate, 55-lower pressure plate, 6-shielding unit, 61-slide block, 62-baffle, 63-slide slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides two technical solutions:

[0026] Embodiment 1: A clamping tool for machining radial holes of a piston rod, comprising a mounting plate 1, a clamping assembly 2 is provided on the top outer wall of the mounting plate 1 for clamping and limiting the piston rod, and the clamping assembly 2 comprises:

[0027] The clamping unit 3 comprises a connecting rod 31 mounted on the top outer wall of the mounting plate 1, the outer walls on both sides of the connecting rod 31 are provided with openings, a fixing plate 32 is mounted on the top outer wall of the connecting rod 31, a trapezoidal block 33 is slidably connected to the outer wall surface of the bottom of the fixing plate 32, and clamping claws 34 are mounted on the opposite surfaces of the two trapezoidal blocks 33, and rubber pads or similar material structures are mounted on the opposite surfaces of the clamping claws 34 to prevent the clamping claws 34 from scratching the surface of the piston rod when clamping the piston rod;

[0028] The linkage unit 4 is disposed between the two trapezoidal blocks 33 and is used to drive the clamping jaws 34 to perform relative movement;

[0029] The driving unit 5 is arranged above the linkage unit 4 and is used for performing up and down reciprocating motion operations.

[0030] In this embodiment, the linkage unit 4 includes a driving support plate 41, and T-slots 42 are provided on the opposite surfaces of the two trapezoidal blocks 33, and sliders adapted to the T-slots 42 are installed on the outer walls on both sides of the driving support plate 41, and the sliders are slidably connected to the T-slots 42, and an extension column 43 is installed on the outer wall of the top of the driving support plate 41, and the extension column 43 passes through and extends out of the fixed plate 32.

[0031] In this embodiment, the driving unit 5 includes a support block 51 installed on the top outer wall of the fixing plate 32, and an extension plate 52 is installed on the top outer wall of the support block 51, and a lifting cylinder 53 is installed on the top outer wall of the extension plate 52. The lifting cylinder 53 is a prior art and is electrically connected to an external power supply. The output end of the lifting cylinder 53 passes through and extends out of the extension plate 52, and a lifting plate 54 is installed on the output end of the lifting cylinder 53, and a lower pressure plate 55 is installed on the left and right ends of the lifting plate 54. The bottom outer wall of the lower pressure plate 55 is connected to the extension column 43. Fixed, by starting the lifting cylinder 53, the lifting cylinder 53 drives the lifting plate 54 to rise, and the lifting plate 54 rises and drives the lower pressure plate 55 fixed thereto to rise, and the lower pressure plate 55 rises and drives the extension column 43 fixed thereto to rise, and the movement of the extension column 43 will drive the driving support plate 41 fixed thereto to move, and the movement of the support plate 41 will pull the two trapezoidal blocks 33 to move relative to each other through the slider, and the relative movement of the trapezoidal blocks 33 will drive the clamping claws 34 fixed thereto to contact the outer wall of the piston rod and thereby perform a limit clamping operation on the piston rod.

[0032] Embodiment 2:

[0033] The main difference from the first embodiment is:

[0034] A clamping tool for processing radial holes in a piston rod, a shielding unit 6 is provided on the top outer wall of the mounting plate 1 to prevent debris from splashing onto the outer wall surface of the piston rod, the shielding unit 6 includes a slide block 61, and a baffle 62 is slidably connected inside the slide block 61, the baffle 62 can be replaced according to actual use requirements, so that the shielding area is further expanded, a sliding groove 63 is provided on the top outer wall of the mounting plate 1, and a self-locking slider is slidably connected inside the sliding groove 63, the self-locking slider is a prior art and is adapted to the sliding groove, the top outer wall of the self-locking slider is fixed to the bottom outer wall of the slide block 61.

[0035] The circuits and electronic components involved in the utility model are all prior art, which can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to internal structures and methods. It should be noted that the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the inventor will not elaborate on them here.

[0036] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] During operation, the baffle plate 62 to be used is inserted into the slide block 61 in advance. At this time, the piston rod is placed between the clamping jaws, and the baffle plate 62 extending through the processed end of the piston rod is started. At this time, the lifting cylinder 53 is started, so that the lifting cylinder 53 drives the lifting plate 54 to rise, and the lifting plate 54 rises and drives the lower pressure plate 55 fixed thereto to rise, and the lower pressure plate 55 rises and drives the extension column 43 fixed thereto to rise. The movement of the extension column 43 will drive the driving support plate 41 fixed thereto to move, and the movement of the support plate 41 will pull the two trapezoidal blocks 33 to move relative to each other through the slider, and the relative movement of the trapezoidal blocks 33 will drive the clamping jaws 34 fixed thereto to contact the outer wall of the piston rod and then perform a limit clamping operation on the piston rod. The above is the working principle of a clamping tool for piston rod radial hole processing.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping tool for machining a radial hole of a piston rod, comprising a mounting plate (1), characterized in that: The top outer wall of the mounting plate (1) is provided with a clamping assembly (2) for clamping and limiting the piston rod, and the clamping assembly (2) comprises: The clamping unit (3) comprises a connecting rod (31) mounted on the top outer wall of the mounting plate (1), a fixing plate (32) being mounted on the top outer wall of the connecting rod (31), a trapezoidal block (33) being slidably connected to the bottom outer wall surface of the fixing plate (32), and clamping claws (34) being mounted on opposite surfaces of the two trapezoidal blocks (33); A linkage unit (4) is disposed between the two trapezoidal blocks (33) and is used to drive the clamping jaws (34) to perform relative movement; The driving unit (5) is arranged above the linkage unit (4) and is used for performing up and down reciprocating motion operations.

2. The clamping tool for machining radial holes of piston rods according to claim 1, characterized in that: The linkage unit (4) comprises a driving support plate (41), the opposite surfaces of the two trapezoidal blocks (33) are provided with T-shaped grooves (42), and the outer walls on both sides of the driving support plate (41) are provided with sliders adapted to the T-shaped grooves (42), and the sliders are slidably connected to the T-shaped grooves (42), and the top outer wall of the driving support plate (41) is provided with an extension column (43), and the extension column (43) penetrates and extends out of the fixed plate (32).

3. The clamping tool for machining radial holes of piston rods according to claim 2, characterized in that: The driving unit (5) comprises a supporting block (51) mounted on the top outer wall of the fixing plate (32), an extending plate (52) is mounted on the top outer wall of the supporting block (51), and a lifting cylinder (53) is mounted on the top outer wall of the extending plate (52).

4. The clamping tool for machining radial holes of piston rods according to claim 3, characterized in that: The output end of the lifting cylinder (53) passes through and extends out of the extension plate (52), and a lifting plate (54) is installed at the output end of the lifting cylinder (53), and lower pressing plates (55) are installed at the left and right ends of the lifting plate (54), and the bottom outer wall of the lower pressing plate (55) is fixed to the extension column (43).

5. The clamping tool for machining radial holes of piston rods according to claim 1, characterized in that: The top outer wall of the mounting plate (1) is provided with a shielding unit (6) for preventing debris from splashing onto the outer wall surface of the piston rod.

6. The clamping tool for machining radial holes of piston rods according to claim 5, characterized in that: The shielding unit (6) comprises a slide block (61), and a baffle (62) is slidably connected inside the slide block (61); a slide groove (63) is provided on the top outer wall of the mounting plate (1), and a self-locking slider is slidably connected inside the slide groove (63); the top outer wall of the self-locking slider is fixed to the bottom outer wall of the slide block (61).

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