CN215659003U

CN215659003U - Oil distribution shaft self-centering clamping deep hole drilling tool

Info

Publication number: CN215659003U
Application number: CN202121459595.9U
Authority: CN
Inventors: 黄忠禄
Original assignee: Yulin Fushan Hydraulic Components Manufacturing Co ltd
Current assignee: Yulin Fushan Hydraulic Components Manufacturing Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-28
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a self-centering clamping deep hole drilling tool for an oil distribution shaft, which adopts a self-centering elastic clamp structure with two half-moon bright circular arcs, is designed for measuring different types of oil distribution shafts, is used for number matching clamping, realizes an error-proof chip set, is additionally provided with an auxiliary positioning sleeve at the middle position of the oil distribution shaft, better corrects the verticality of a workpiece, and increases the clamping stability. The phenomenon that workpieces are not installed in place or firmly installed due to the clamp is avoided. Thereby solving the problem of poor size of machining caused by universality in the conventional three-jaw chuck or V-shaped clamp. The tool clamp is a self-centering clamping tool which is simple in structure, easy to manufacture, convenient to install and use, safe and reliable. The clamping time is greatly reduced in the clamping processing of the oil distribution shaft, only the first part is needed to be made, the cutter and the processing parameters are well debugged, the subsequent processing does not need to be repeatedly positioned in the middle, and the qualified warehouse entry of the processing inspection after one-key operation is realized.

Description

Oil distribution shaft self-centering clamping deep hole drilling tool

Technical Field

The utility model relates to the field of hydraulic parts, in particular to a self-centering clamping deep hole drilling tool for an oil distribution shaft.

Background

The processing technology difficulty of the oil distribution shaft is the roughness and roundness of the external cylindrical grinding, and the processing difficulty of the oil distribution shaft is particularly prominent in deep hole drilling. The size of the inner hole of the revolving body is scientifically and reasonably designed according to the requirements of customers and working modes. The oil distribution shaft is determined based on the specific inner hole space design given by the revolving body, and the space design needs to be met. The tapping performance is excellent, the shaft diameter needs to be designed reasonably, the oil passage distribution is natural and complicated, and the oil inlet and the oil outlet are thick and thin and are communicated with each other or are separated and sealed in layers. Under the condition, the deep hole processing requirement on the oil distribution shaft is higher, and the accurate control of the position degree, the depth and the verticality must be ensured. In a conventional three-jaw chuck or a V-shaped clamp, because the root part of the small end of the oil distribution shaft is clamped, the stress and the acting point are both at the bottom. The oil distribution shaft is too long, the distance between the large end and a clamping stress point is more suspended, the deflection is easy to occur, the subsequent center hole drilling, the hole leading and the deep hole drilling are greatly increased in difficulty, and the verticality and the position degree can not be guaranteed during the deep hole drilling. The phenomena of drilling broken heads, vibration lines on the sealing surface, serious cutter loss, unstable tapping or milling teeth, thread rotten, go-no go gauge and cross hole drilling deviation, scrapping and the like caused by the fact that the sealing surface is communicated with an oil way which cannot be communicated with the sealing surface are easy to occur. During rough grinding of the excircle, the axial and radial runout is large, vibration lines are generated, and the excircle cannot be worn to cause scrappage after being ground in accurate grinding.

Compared with document 1, application No.: CN200910056907, invention name: a self-centering fixing device comprises a support, an oil cylinder, a forward and backward screw rod, a rack, a gear, a screw rod supporting frame, an upright post, a clamping baffle plate, a V-shaped guide rail and the like. The oil cylinder works to drive the rack, the gear, the reversing screw rod and the clamping baffle plate to act to clamp the workpiece tightly so as to carry out operations such as drilling, boring, tapping and the like. The self-centering fixing device is suitable for high-precision machining occasions where the workpiece appearance is free tolerance and the wall thickness is required to be equal after drilling and boring. Reference 2, application No.: CN201210447964, invention name: a special drilling device for a vertical drill flange comprises a drilling machine working platform and a T-shaped block arranged on the drilling machine working platform, wherein the T-shaped block is connected with a cross-shaped working platform, the cross-shaped working platform is connected with a rotary working platform, and the rotary working platform is connected with a three-jaw self-centering chuck through a connecting block; the rotation center of the three-jaw self-centering chuck is superposed with the center of the rotary worktable. The precise clamping and positioning work of a workpiece can be easily finished, meanwhile, the working platform is rotated by the hand wheel to realize the division of a reference circle at any angle on the reference circle, and the cross-shaped working platform is moved by the hand wheel to realize the precise machining of a hole with the position precision requirement on the flange; therefore, the machining of holes with any angle on the dividing circle of the flange and holes with any position requirements on the flange can be accurately drilled in high quality, small batch and normal vertical drilling. The structural features of the comparison documents 1, 2 are different from those of the present patent application.

Disclosure of Invention

The utility model aims to provide a self-centering clamping deep hole drilling tool for an oil distribution shaft, which adopts a circular arc self-centering elastic clamp structure with two half-moon surfaces, is designed for measuring different types of oil distribution shafts, clamps the oil distribution shafts in a matching manner, realizes the function of error prevention, and increases an auxiliary positioning sleeve at the middle position of the oil distribution shaft, thereby better correcting the verticality of a workpiece and increasing the clamping stability. The phenomenon that workpieces are not installed in place or firmly installed due to the clamp is avoided. Thereby solving the problem of poor size of machining caused by universality in the conventional three-jaw chuck or V-shaped clamp. Meanwhile, a cylindrical pin and a triangular diamond pin are added on the self-centering tool as guiding, and when an oil distribution shaft of a product type needs to be replaced, two semi-moon circular arc self-centering elastic clamps of the same type can be replaced quickly and conveniently. The tool clamp is a self-centering clamping tool which is simple in structure, easy to manufacture, convenient to install and use, safe and reliable. The clamping time is greatly reduced in the clamping processing of the oil distribution shaft, only the first part is needed to be made, the cutter and the processing parameters are well debugged, the subsequent processing does not need to be repeatedly positioned in the middle, and the qualified warehouse entry of the processing inspection after one-key operation is realized.

The technical solution of the utility model is as follows: a self-centering clamping deep hole drilling tool for an oil distribution shaft comprises a bottom plate, side plates, a hinge nut, two half-moon arc self-centering elastic clamps, a hinge cushion block, a first cylindrical head screw, an upper fixing plate, a second cylindrical head screw, a pressing plate, an opening pressing plate, a nut, a screw rod, a diamond pin, a first screw, a cylindrical pin, an auxiliary positioning sleeve, a limiting plate, a second screw, an auxiliary centering rod, two hinged elastic arcs, a screw hole for strengthening stability, a U-shaped opening for effectively avoiding transition clamping, a diamond pin guide hole, a cylindrical pin guide hole, an anti-mistake quartering centripetal elastic clamp and a positioning sleeve shell, and is characterized in that the side plates 2 are arranged above the bottom plate 1, the top surfaces of the side plates 2 are provided with the two half-moon arc self-centering elastic clamps 4 and the hinge nut 3, the hinge cushion block 5 and the first cylindrical head screw 6, the side top is provided with an upper fixing plate 7 and a second cylindrical head screw 8, the top surfaces are provided with a pressing plate 9, an opening pressing plate 10 is arranged on the top surface of the pressing plate 9, a nut 11, a screw rod 12, a diamond pin 13, a first screw 14 and a cylindrical pin 15 are arranged above the opening pressing plate 10, an auxiliary centering rod 19 is arranged between the two semi-moon arc self-centering elastic clamps 4, and an auxiliary positioning sleeve 16, a limiting plate 17 and a second screw 18 are arranged outside the auxiliary centering rod 19.

The lower part of the auxiliary center searching rod 19 is positioned between the bottom plate 1 and the side plate 2.

The middle of the side plate 2 is provided with a concave arc for installing the bottom surface of the auxiliary center searching rod 19.

Two hinged elastic arcs 20 are arranged at the front ends of the two semi-moon arc self-centering elastic clamps 4.

The two semi-moon arc self-centering elastic clamps 4 are provided with diamond pin guide holes 23 and cylindrical pin guide holes 24 at the back, the two semi-moon arc self-centering elastic clamps 4 effectively avoid transition clamping U-shaped openings 22 at the two sides of the front ends of the two semi-moon arc self-centering elastic clamps 4, and the middle is provided with a centering elastic clamp 25 for preventing the halving.

The pressure plate 9 is fixed on the positioning sleeve shell through a second screw 18 in front of the positioning sleeve shell step arc.

Compared with the prior art, the utility model has the outstanding effects that: the clamping structure is improved, the design is optimized, and compared with a conventional three-jaw chuck or a V-shaped clamp, the clamping structure is improved. The universality of the three-jaw chuck or the V-shaped clamp is integrated, the error-proof function is added, and the phenomena of error assembly and skew assembly of the oil distribution shaft are effectively avoided. The oil distribution shaft is enabled to have number-matching clamping in the clamping processing, and the stability, firmness and perpendicularity of the clamping are improved. The rigidity is increased, vibration lines generated by the vibration cutter are effectively avoided, and the phenomena of drill breakage and drill deviation are greatly reduced. The tooling clamp is simple in structure, and different types of oil distribution shafts can be machined only by replacing the two semicircular arc self-centering elastic clamps. More suitable for batch production of oil distribution shafts.

Drawings

Fig. 1 is an assembled perspective view of the present invention.

Fig. 2 is a front view of the assembly of the present invention.

Fig. 3 is a left side view of the assembly of the present invention.

Fig. 4 is a schematic top view of the assembly of the present invention.

FIG. 5 is a schematic view of the auxiliary centering rod of the present invention in front view and partially in cross section.

Fig. 6 is a perspective view of the auxiliary centering rod of the present invention.

Fig. 7 is a front view of two half-moon bright circular arc self-centering elastic clamps according to the present invention.

Fig. 8 is a perspective view of the auxiliary positioning sleeve of the present invention.

Reference numerals: the self-centering elastic clamp comprises a bottom plate 1, side plates 2, a hinge nut 3, two semi-moon circular arc self-centering elastic clamps 4, a hinge cushion block 5, a first cylindrical head screw 6, an upper fixing plate 7, a second cylindrical head screw 8, a pressing plate 9, an opening pressing plate 10, a nut 11, a screw 12, a diamond pin 13, a first screw 14, a cylindrical pin 15, an auxiliary positioning sleeve 16, a limiting plate 17, a second screw 18, an auxiliary centering rod 19, two hinged elastic arcs 20, a stability reinforcing screw hole 21, an effective avoidance transition clamping U-shaped opening 22, a diamond pin guide hole 23, a cylindrical pin guide hole 24 and an anti-error quartering centripetal elastic clamp 25.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

example 1, the case of a machining center clamping an oil distribution shaft by a deep hole drill machining center is as follows:

1. before processing, an auxiliary centering rod 19 (shown in figure 5) is correctly clamped on the tool as shown in figure 6. The correct installation method comprises the following steps: firstly, loosening two nuts 11 to enable a pressure plate to move flexibly; checking whether the two half-moon circular bright arc self-centering elastic clamps 4 are good or not and whether the elastic compression is natural or not; the surface of the tool needs to be clean, no scrap iron or foreign matters exist, and the requirement on flatness is ensured; the small end of the auxiliary centering rod 19 is lightly held in the two half moon elastic clamps 4, the screw 12 is manually operated by a hand plate, so that the two half moon arc self-centering elastic clamps 4 and the auxiliary centering rod 19 are in a pre-tightening state, cannot be tightened or loosened, and the clamp is effectively prevented from being inclined; placing an upper pressing plate 9 and an opening pressing plate 10, pre-tightening two nuts 11, and ensuring that two half-moon-circle bright-arc self-centering elastic clamps 4 are parallel to an upper fixing plate 7 and workpieces are vertical to each other; sequentially tightening two half-moon-round bright-arc self-centering elastic clamps 4 and tightening two nuts 11; correctly operating the machine tool to divide the center of the workpiece coordinate, and inputting the workpiece coordinate to be consistent with the machine tool coordinate.

2. The auxiliary centering rods 19 are sequentially removed in the reverse order of installation, and the oil distribution shaft is correctly installed on the tool, as shown in fig. 1. The small end of the oil distribution shaft is firstly checked to be well matched with the auxiliary positioning sleeve 16, and the limiting plate 17 and the screw 12 are put down and slightly pre-tightened. And (4) pre-tightening two half-moon circular bright arc self-centering elastic clamps 4 for the second time to clamp the workpiece. And placing the upper pressing plate 9, the upper opening pressing plate 10 and the pre-tightening nut 11 for three times. Four times of tightening two half-moon circular bright arcs self-centering elastic clamps 4, two nuts 11 and a screw 18.

3. And finishing processing, checking and warehousing by one key.

Embodiment 2, with reference to the drawings and embodiment 1, an auxiliary centering rod 19 is installed between two half-moon circular arc self-centering elastic clamps 4, a pressing plate 9 is installed on the tops of the two half-moon circular arc self-centering elastic clamps 4, an opening pressing plate 10 is arranged on the pressing plate 9, an upper fixing plate 7 is arranged on the side edge of each two half-moon circular arc self-centering elastic clamp 4, a side plate 2 is arranged below the upper fixing plate 7, the bottom of the side plate 2 is fixed on a bottom plate 1, an auxiliary positioning sleeve 16 is installed outside the auxiliary centering rod 19, a limiting plate 17 is installed on the auxiliary positioning sleeve 16, the limiting plate 17 is fixed by a second screw 18, and the pressing plate 9 is provided with a nut 11 and a screw 12. The two semi-moon circular arcs are provided with a diamond pin 13, a first screw 14 and a cylindrical pin 15 from the top of the centering elastic clamp 4, the two semi-moon circular arcs are provided with a hinge nut 3, a hinge cushion block 5 and a first cylindrical head screw 6 from the centering elastic clamp 4, the front end of the two semi-moon circular arcs are provided with two hinged elastic arcs 20, the rear end of the two semi-moon circular arcs is provided with a diamond pin guide hole 23 and a cylindrical pin guide hole 24, the two sides of the two semi-moon circular arcs are provided with reinforced stability screw holes 21 for installation and fixation, the two semi-moon circular arcs effectively avoid a transition clamping U-shaped opening 22, and the middle part of the two semi-moon circular arcs is provided with a misalignment-preventing quartering centripetal elastic clamp 25. The front of the positioning sleeve shell is provided with a pressure plate 9, and the pressure plate 9 is fixed by a second screw 18.

Claims

1. The utility model provides a join in marriage oily axle from centering tight deep hole frock of boring, comprising a base plate, the curb plate, the hinge nut, two half moon circular arcs are from centering elastic clamp, the hinge cushion, first cylinder head screw, an upper fixed plate, the second cylinder head screw, the clamp plate, the opening clamp plate, the nut, the screw rod, the diamond-shaped pin, first screw, the cylindric pin, supplementary position sleeve, the limiting plate, the second screw, supplementary centering stick, two articulated elastic arcs, strengthen the steadiness screw hole, effectively avoid transition clamping U type mouth, diamond-shaped pin guiding hole, cylindric pin guiding hole and mistake proofing quartering centripetal elastic clamp, its characterized in that bottom plate (1) top is equipped with curb plate (2), curb plate (2) top surface has two half moon circular arcs from centering elastic clamp (4) and hinge nut (3), there is hinge cushion (5), first cylinder head screw (6), the side top has an upper fixed plate (7), Second cylinder head screw (8), there is clamp plate (9) the top surface, and there is opening clamp plate (10) clamp plate (9) top surface, and there are nut (11), screw rod (12) opening clamp plate (10) top, diamond pin (13), first screw (14), cylindric lock (15) in addition, and two half moon circular arcs have supplementary centering stick (19) from the centre of centering elastic clamp (4), and supplementary centering stick (19) outside of seeking has auxiliary positioning cover (16), limiting plate (17), second screw (18).

2. The tool for drilling the deep hole through self-centering clamping of the oil distribution shaft is characterized in that the lower part of the auxiliary centering rod (19) is positioned between the bottom plate (1) and the side plate (2).

3. The tool for drilling the deep hole through the self-centering clamping of the oil distribution shaft is characterized in that the bottom surface of an auxiliary centering rod (19) for concave arc installation is arranged in the middle of the side plate (2).

4. The self-centering clamping deep hole drilling tool for the oil distribution shaft is characterized in that two hinged elastic arcs (20) are arranged at the front ends of two semi-moon arc self-centering elastic clamps (4).

5. The self-centering clamping deep hole drilling tool for the oil distribution shaft according to the claim is characterized in that a diamond pin guide hole (23) and a cylindrical pin guide hole (24) are formed in the back of two semi-moon arc self-centering elastic clamps (4), two sides of the front end of the two semi-moon arc self-centering elastic clamps (4) effectively avoid a transition clamping U-shaped opening (22), and a centering elastic clamp (25) with a mistake proofing quartering is arranged in the middle.

6. The tool for drilling the deep hole through the self-centering clamping of the oil distribution shaft is characterized in that a pressure plate (9) is arranged in front of a step arc of a positioning sleeve shell and is fixed on the positioning sleeve shell through a second screw (18).