CN212043654U

CN212043654U - Lathe drilling auxiliary fixture

Info

Publication number: CN212043654U
Application number: CN202020648845.2U
Authority: CN
Inventors: 郭南初; 汤广熔
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-12-01
Anticipated expiration: 2030-04-26

Abstract

A lathe drilling auxiliary clamp comprises a clamping unit, a driving unit and a fixing unit, wherein the clamping unit can be used for clamping and fixing a workpiece, the driving unit is fixedly connected with the clamping unit, the fixing unit is used for being connected with a lathe, and the driving unit is connected with the fixing unit in a sliding mode; the clamping unit comprises a base fixedly connected with the driving unit, a chuck fixedly arranged on the base, and at least two clamping jaws arranged on the chuck in a radially sliding manner, wherein the clamping jaws abut against the inner wall of the bottom surface of the workpiece, so that the workpiece is clamped and fixed. The utility model relates to a lathe drilling auxiliary fixture which has simple structure and is convenient for clamping; the clamping jaws are provided with a plurality of steps, the distances from the steps to the center of the chuck are different, and the clamping jaws can adapt to workpieces to be machined with different diameters; the height of auxiliary clamp can be adjusted wantonly in order to adapt to the not co-altitude demand of waiting to process the hole, in addition the utility model discloses an auxiliary clamp is reliable and stable.

Description

Lathe drilling auxiliary fixture

Technical Field

The utility model belongs to the technical field of the machine tool machining, especially, relate to a lathe drilling auxiliary fixture.

Background

At present, a round pipe is a section bar with wide application, and the round pipe can be used for equipment frames, mechanical equipment parts and the like. Due to the use requirement, the round pipe needs to be drilled, and the round pipe needs to be positioned and clamped by using a positioning clamp. The processing and clamping difficulty of the round tube is high, and the workpiece can fly out of the jaw due to too loose clamping, so that safety accidents are caused; too tight a clamp tends to deform and leave a clamp mark on the surface of the workpiece.

In addition, the pipe is inconvenient to be clamped in the lateral wall drilling (the hole is radially parallel with the pipe) on the lathe, and the cutter that mainly adopts of the current side wall drilling on the lathe carries out feed motion for the fluted drill, and the pipe carries out rotary motion through specific anchor clamps to the completion is drilled on the lateral wall of pipe.

The prior art discloses a pipe boring grab and cite this pipe boring grab's radial drill (the publication number is CN 208391522U), including the supporting seat, fix the channel-section steel on the supporting seat, can dismantle the fixed plate of being connected with the channel-section steel both ends, set up on the fixed plate and axis direction and channel-section steel length direction the same fixed orifices, both ends stretch into respectively the downthehole pipe of taking the drilling of fixed plate, set up the fixing device who is used for pressing the area drilling pipe on the supporting seat. The fixing device comprises a plurality of T-shaped grooves which are arranged on the supporting seat and are mutually vertical to the length direction of the channel steel, T-shaped rods which are mutually matched with the T-shaped grooves and slide in the T-shaped grooves along the length direction of the T-shaped grooves, a pressing plate which is sleeved on the T-shaped rods, and fixing nuts which are arranged at the top ends of the T-shaped rods and are in threaded connection with the T-shaped rods. The fixing device can block part of workpieces to be drilled, and even if the workpieces are blocked by the rubber pads, the pressing plate can generate certain influence on the circular pipe to be drilled; in addition, when the drilling requirement on the workpiece to be drilled is more, the workpiece to be drilled cannot be rotated randomly according to the use requirement, and the use is inconvenient. The fixing device is troublesome in clamping and adjusting workpieces with different inner diameters, low in universality, incapable of adapting to circular pipes with different sizes and adjusting the position of a drill hole, and obviously incapable of adapting to increasingly complex machining requirements.

The prior art discloses a lathe boring tool (publication number CN 106346268B), which comprises an upper bottom plate and a lower bottom plate, wherein the lower bottom plate is fixedly connected with a lathe middle supporting plate, and a positioning locking device, a boring bar supporting device, a supporting guide device and an adjusting device are arranged on the lower bottom plate. The boring bar supporting device comprises a boring bar guiding supporting body, the boring bar guiding supporting body is welded on the left outer side and the right outer side of the upper surface of the lower bottom plate, and an outer taper sleeve is welded on the boring bar guiding supporting body. When the device is used, a workpiece is arranged on the tool, the boring rod enters the opening nylon sleeve and the inner hole of the workpiece, the stud is adjusted, the hexagon nut is locked, and the outer circle of the workpiece is ensured to be coaxial with the boring rod. The device has the advantages of complex structure, troublesome clamping and high manufacturing cost.

Therefore, the research is focused on developing the auxiliary drilling clamp which can adapt to round pipes with different sizes, can adjust the drilling position and is convenient to clamp.

Disclosure of Invention

In view of this, the utility model aims at providing a can adapt to the not pipe of equidimension, can adjust the position of drilling and the convenient drilling auxiliary fixture of clamping.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a lathe drilling auxiliary clamp comprises a clamping unit, a driving unit and a fixing unit, wherein the clamping unit can be used for clamping and fixing a workpiece, the driving unit is fixedly connected with the clamping unit, the fixing unit is used for being connected with a lathe, and the driving unit is connected with the fixing unit in a sliding mode; the clamping unit comprises a base fixedly connected with the driving unit, a chuck fixedly arranged on the base, and at least two clamping jaws arranged on the chuck in a radially sliding manner, wherein the clamping jaws abut against the inner wall of the bottom surface of the workpiece, so that the workpiece is clamped and fixed.

Specifically, a plurality of different steps are formed on the clamping jaw, the distance from each step to the center of the chuck is different, and the clamping unit further comprises a clamping jaw driving assembly which is used for driving the clamping jaw to move radially so that the workpiece is clamped by the steps.

Specifically, the centre gripping unit still including fixed the setting be in the screw rod at chuck center, with screw rod threaded connection's nut, the screw rod is worn to locate the center of work piece, the nut sets up the top of screw rod just is located the top of work piece.

Preferably, the clamping unit further comprises a split washer arranged between the workpiece and the nut, the nut is in threaded connection with the screw and presses the workpiece through the split washer, and the screw and the axis of the workpiece are in a straight line.

Specifically, the driving unit comprises a sliding block and a stud, the sliding block is connected with the fixing unit in a sliding mode, the stud is in threaded connection with the sliding block, threads are formed on the outer vertical surface of the stud, the sliding block is fixedly connected with the base, and the stud rotates to drive the sliding block to move along the axial direction of the stud so as to drive the base and the workpiece fixed on the sliding block to move.

Preferably, the fixing unit comprises a support and a bearing seat, the support is vertically arranged relative to the base and provided with a guide groove in the vertical direction, the bearing seat is fixedly arranged at the top of the support, and the stud penetrates through the bearing seat.

Further preferably, the fixing unit further includes a guide post formed on the bracket, a first groove capable of being matched with the guide post is formed on the slider, a second groove is formed on the top of the guide post and the top of the bracket, and two end portions of the bearing seat are disposed in the second groove.

Further preferably, the fixing unit further comprises a connecting part forming a non-guide groove surface of the bracket, and the connecting part is used for being connected with a machine tool.

Preferably, the fixing unit further comprises a fastening assembly disposed on the slider, and the fastening assembly is used for pressing the slider on the fixing unit.

Preferably, the driving unit further comprises a boss fixedly connected with the stud, and a power assembly connected with the boss and used for driving the boss to rotate, and a through hole is further formed in the boss.

Compared with the prior art, the auxiliary fixture for lathe drilling has simple structure and is convenient for clamping; the clamping jaws are provided with a plurality of steps, the distances from the steps to the center of the chuck are different, and the clamping jaws can adapt to workpieces to be machined with different diameters; the height of auxiliary clamp can be adjusted wantonly in order to adapt to the not co-altitude demand of waiting to process the hole, in addition the utility model discloses an auxiliary clamp is reliable and stable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partial view of a fixing unit according to the present invention.

Reference numerals and component parts description referred to in the drawings:

11. a base; 12. a chuck; 13. a claw; 14. a screw; 15. a nut; 16. a split washer; 21. a slider; 22 a stud; 23. a boss; 24. a through hole; 31. a support; 32. a bearing seat; 33. a guide post; 34. a second groove; 35. a connecting portion; 36. a fastening assembly; 37. a guide groove; 4. and (5) a workpiece.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a lathe drilling auxiliary fixture, its includes clamping unit, drive unit and fixed unit, and the clamping unit can be used for centre gripping and fixed work piece 4, drive unit and clamping unit fixed connection and with fixed unit sliding connection, fixed unit is used for being connected with the lathe. The utility model provides a work piece 4 is the pipe.

The clamping unit includes a base 11, a chuck 12, jaws 13, a screw 14, a nut 15, and a jaw driving assembly (not shown). The base 11 and the drive unit fixed connection, chuck 12 are fixed to be set up on base 11, and two at least jack catchs 13 radially slidable set up on chuck 12, and jack catch 13 offsets with the bottom surface inner wall of work piece 4 and establishes to can centre gripping and fixed work piece 4. In order to be able to accommodate round tubes of different inside diameters, the jaws 13 are formed with a plurality of different steps, each step having a different distance from the centre of the chuck 12. In order to let the work piece 4 more stable of centre gripping on the horizontal direction, jack catch 13 is more firm to prop and is established on the bottom surface inner wall of work piece 4 promptly, and jack catch 13 equidistant setting on chuck 12, the utility model discloses in can be three-jaw chuck or four-jaw chuck. The jaw driving assembly (not shown) is used for driving the jaws 13 to move radially so as to enable the workpiece 4 to be clamped by the steps, and is connected with external power, wherein the external power can be driven by a cylinder or hydraulic pressure.

In order to enable the workpiece 4 to be fixed more stably in the vertical direction, the center of the chuck 12 is further fixedly provided with a screw 14 and a nut 15 in threaded connection with the screw 14, the screw 14 penetrates through the center of the workpiece 4, the nut 15 is arranged at the top of the screw 14 and located above the workpiece 4, and when the nut 15 is screwed, the nut 15 is matched with the screw 14, and the workpiece 4 can be fixed in the vertical direction. Meanwhile, in order to better protect the workpiece 4 and reduce the rigid contact between the nut 15 and the workpiece 4, an open washer 16 is arranged between the nut 15 and the workpiece 4, and the screw 14 is in threaded connection with the nut 15 and presses the workpiece 4 through the open washer 16. In order to optimize the stability of the fixation of the workpiece 4, the screw 14 is aligned with the axis of the workpiece 4.

The driving unit comprises a sliding block 21, a stud 22, a boss 23 and a power assembly. The sliding block 21 is fixedly connected with the base 11, threads are formed on the outer vertical surface of the stud 22 and are in threaded connection with the sliding block 21, and the boss 23 is fixedly connected with the stud 22 and is used for being connected with a power assembly capable of providing power from the outside. In order to facilitate the connection of the boss 23 with the power assembly, a through hole 24 is formed on the boss 23. The power assembly can drive the boss 23 to rotate, so that the stud 22 rotates to drive the sliding block 21 to move, and the base 11 is driven to move up and down along the stud, and further the workpiece 4 is driven to move.

The fixing unit comprises a bracket 31 and a bearing seat 32. The bracket 31 is vertically disposed with respect to the base 11 and has a guide groove 37 opened in a vertical direction thereof so that the slider 21 moves up and down in the guide groove 37. In order to make the rotation of the stud 22 more stable and not deviate from the original direction, the fixing unit further comprises bearing seats 32 fixedly arranged at two ends of the top of the bracket 31, and the stud 22 penetrates through the bearing seats 32. In the present invention, the bearing seat 32 also has a limiting function to prevent the slide 21 from moving away from the guide groove 37.

In order to enable the slide block 21 to move up and down without deviating from the guide groove 37, the fixing unit further includes a guide post 33 formed on the bracket 31, and a first groove capable of being engaged with the guide post 33 is formed on the slide block 21, so that the slide block 21 can move up and down in the guide groove 37 more stably under the guiding action of the guide post 33. The utility model discloses in, guide post 33 has two, and both relative parallel arrangement are in guide way 37.

In order to make the whole device more stable, a second groove 34 is formed at the top of the guide column 33 and the top of the bracket 31, and two ends of the bearing seat 32 are arranged in the second groove 34, so that the stud 22 is prevented from deviating when the lathe driving device rotates at a high speed.

To facilitate connection to the machine tool, the fixing unit further comprises a connection portion 35 formed on the support 31 on the rear face of the guide groove 37. In order to make the connection between the machine tool and the connecting portion 35 more secure, the surface of the connecting portion 35 is further provided with knurls for increasing the friction between the connecting portion 35 and the machine tool.

In order to prevent the components in the auxiliary clamp from moving when the machine tool runs at a high speed, the fixing unit further comprises a fastening assembly 36 arranged on the sliding block 21, and the fastening assembly 36 is used for pressing the sliding block 21 on the fixing unit, so that the auxiliary clamp is clamped more stably and firmly.

The utility model discloses a clamping and theory of use as follows: firstly, according to the inner diameter of a workpiece 4, selecting a step closest to the inner diameter of the workpiece 4, sleeving the workpiece 4 on a screw 14, contacting the inner wall of the lower surface of the workpiece 4 with the steps of a plurality of clamping jaws 13, and tightening the clamping jaws 13 outwards by using a clamping jaw driving assembly (not shown in the figure), so that the inner wall of the lower surface of the workpiece 4 supports the upper surfaces of the steps of the clamping jaws 13; then, the corresponding split washer 16 is placed on the upper surface of the workpiece 4, and the nut 15 is screwed, so that the split washer 16 is pressed against the workpiece 4, and the clamping process is completed. The rotating assembly (not shown in the figure) is started, so that the stud 22 rotates to drive the sliding block 21 to move, and the workpiece 4 on the base 11 is driven to move up and down, and further the height of the hole on the workpiece 4 can be conveniently adjusted. The feeding direction of the lathe tool is adjusted, the radial position of the adjusting hole on the workpiece 4 is adjusted, the lathe is started, the connecting portion 35 is driven to rotate, the workpiece 4 is driven to rotate, the punching process is carried out on the workpiece 4 through the axial feeding drill, punching is completed, the lathe stops, the workpiece 4 with the punched hole is taken out, the workpiece 4 which is to be machined and is not punched is clamped on the auxiliary clamp of the application according to the method, the position does not need to be adjusted, the drilling process is directly carried out, and machining of multiple workpieces 4 can be continuously completed.

The utility model relates to a lathe drilling auxiliary fixture which has simple structure and is convenient for clamping; the clamping jaws are provided with a plurality of steps, the distances from the steps to the center of the chuck are different, and the clamping jaws can adapt to workpieces to be machined with different diameters; the height of auxiliary clamp can be adjusted wantonly in order to adapt to the not co-altitude demand of waiting to process the hole, in addition the utility model discloses an auxiliary clamp is reliable and stable.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a lathe drilling auxiliary fixture which characterized in that: the lathe comprises a clamping unit, a driving unit and a fixing unit, wherein the clamping unit can be used for clamping and fixing a workpiece, the driving unit is fixedly connected with the clamping unit, the fixing unit is used for being connected with the lathe, and the driving unit is connected with the fixing unit in a sliding mode; the clamping unit comprises a base fixedly connected with the driving unit, a chuck fixedly arranged on the base, and at least two clamping jaws arranged on the chuck in a radially sliding manner, wherein the clamping jaws abut against the inner wall of the bottom surface of the workpiece, so that the workpiece is clamped and fixed.

2. The lathe boring assisting jig according to claim 1, characterized in that: the clamping unit comprises a clamping jaw, a plurality of different steps are formed on the clamping jaw, the distance from each step to the center of the chuck is different, and the clamping unit further comprises a clamping jaw driving assembly which is used for driving the clamping jaw to move radially, so that the steps clamp the workpiece.

3. The lathe boring assisting jig according to claim 1, characterized in that: the clamping unit further comprises a screw rod fixedly arranged at the center of the chuck and a nut in threaded connection with the screw rod, the screw rod penetrates through the center of the workpiece, and the nut is arranged at the top of the screw rod and located above the workpiece.

4. The lathe boring assisting jig as claimed in claim 3, wherein: the clamping unit further comprises an opening washer arranged between the workpiece and the nut, the nut is in threaded connection with the screw rod and compresses the workpiece through the opening washer, and the screw rod and the axis of the workpiece are on the same straight line.

5. The lathe boring assisting jig according to claim 1, characterized in that: the driving unit comprises a sliding block and a stud, the sliding block is connected with the fixing unit in a sliding mode, the stud is in threaded connection with the sliding block, threads are formed on the outer vertical surface of the stud, the sliding block is fixedly connected with the base, and the stud rotates to drive the sliding block to move along the axial direction of the stud so as to drive the base and the workpiece fixed on the base to move.

6. The lathe boring assisting jig as claimed in claim 5, wherein: the fixing unit comprises a support and a bearing seat, the support is vertically arranged relative to the base, a guide groove is formed in the vertical direction of the support, the bearing seat is fixedly arranged at the top of the support, and the stud penetrates through the bearing seat.

7. The lathe boring assisting jig according to claim 6, characterized in that: the fixing unit further comprises a guide post formed on the support, a first groove capable of being matched with the guide post is formed in the sliding block, a second groove is formed in the top of the guide post and the top of the support, and two end portions of the bearing seat are arranged in the second groove.

8. The lathe boring assisting jig according to claim 6, characterized in that: the fixing unit further comprises a connecting part forming a non-guide groove surface of the support, and the connecting part is used for being connected with a machine tool.

9. The lathe boring assisting jig as claimed in claim 5, wherein: the fixing unit further comprises a fastening assembly arranged on the sliding block, and the fastening assembly is used for pressing the sliding block on the fixing unit.

10. The lathe boring assisting jig as claimed in claim 5, wherein: the driving unit further comprises a boss fixedly connected with the stud and a power assembly connected with the boss and used for driving the boss to rotate, and a through hole is formed in the boss.