CN114029525A

CN114029525A - Drilling machine for gear beneficial to improving machining precision

Info

Publication number: CN114029525A
Application number: CN202210017269.5A
Authority: CN
Inventors: 顾家豪
Original assignee: Nantong Kaixi Electromechanical Tools Co ltd
Current assignee: Nantong Kaixi Electromechanical Tools Co ltd
Priority date: 2022-01-08
Filing date: 2022-01-08
Publication date: 2022-02-11
Anticipated expiration: 2042-01-08
Also published as: CN114029525B

Abstract

The invention provides a drilling machine for a gear, which is beneficial to improving the machining precision and belongs to the technical field of machining, and the drilling machine comprises: the drilling tool comprises a drilling tool and a machine frame for driving the drilling tool to adjust the position; it is characterized by also comprising: the drill seat is arranged in a drilling preparation area below the drilling tool; the positioning and inquiring assembly is circumferentially and slidably arranged on the drill seat, and the positioning center of the positioning and inquiring assembly always points to the center of the drill seat; the power end of the pressing driving assembly is connected with the positioning query assembly; the positioning query assembly drives the gear on the drill base to rotate back and forth to search the tooth grooves in the area near the gear, and the pressing and holding driving assembly positions the positioning query assembly after the tooth grooves of the gear are searched, and simultaneously enables the positioning query assembly to be pressed and held in the tooth grooves of the gear. The gear machining clamping device has the advantages of high gear machining clamping efficiency, accurate positioning of gear tooth gaps, accurate positioning of gear centers and the like.

Description

Drilling machine for gear beneficial to improving machining precision

Technical Field

The invention relates to the technical field of machining, in particular to a gear drilling machine beneficial to improving machining precision.

Background

The drilling machine is a machine tool which mainly uses a drill to machine a hole on a workpiece. Typically the drill bit is rotated into a primary motion and the drill bit is moved axially into a feed motion. The drilling machine is simple in structure, relatively low in machining precision, capable of drilling through holes and blind holes, replacing special cutters, and capable of expanding, reaming or tapping and the like. In the machining process, the workpiece is fixed, the cutter moves, the center of the cutter is aligned with the center of the hole, and the cutter rotates (main motion). The drilling machine is characterized in that a workpiece is fixed, a cutter rotates and feeds along the direction of a main shaft, and the operation can be manual or motor-driven.

Chinese patent CN102513931B discloses a wedge-shaped gear pitch circle positioning clamp, which comprises a limiting plate, a connecting screw, a positioning clamping body and a positioning cylinder, wherein the positioning clamping body is provided with a central hole which is a stepped circular hole, and the limiting plate is fixed in a large-diameter section of the central hole of the positioning clamping body through the connecting screw; the small-diameter section opening end of the positioning clamping body central hole is provided with a positioning edge vertically extending towards the circle center, three positioning arcs intersected with the inner circle are uniformly distributed on the inner circle circumference of the positioning edge, the radius of each positioning arc is the same and is smaller than that of the inner circle, and the distances from the arc top of each positioning arc to the inner circle are the same; the number of the positioning cylinders is three, and the three positioning cylinders are respectively used for forming three-point clamping positioning on the three sections of positioning arcs. By adopting the special design, the invention simplifies the structure of the wedge-shaped gear pitch circle positioning clamp in the prior art, has low production cost and easy manufacture, realizes bidirectional rotation positioning and clamping and accurate positioning of a steel column, and has simple use and operation and application and popularization.

However, in this technical solution, although the positioning and clamping operation for the gear can be realized, in the process of positioning the gear whose tooth number cannot be determined, the position of the positioning arc is not convenient to be determined again, and only the gear whose tooth number is fixed or known in advance can be positioned and clamped.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a drilling machine for a gear, which is beneficial to improving the machining precision, through the matching design of a positioning query assembly and a pressing and holding driving assembly on a drill base, the gear is stably clamped on the drill base, and meanwhile, the central point of the gear is positioned, so that a frame driving drilling tool accurately machines the gear according to the central point, through the rotary structural design of the positioning dredging assembly, when the positioning dredging assembly is contacted with the gear, a driving gear reciprocates and rotates back and forth to search a tooth socket nearby the contact, through the matching guide design of a sliding guide part, the tooth socket with uncertain tooth number is quickly positioned and searched nearby the contact position of the gear, through the contact transmission matching design between the positioning dredging assembly and the rotating driving assembly, the positioning dredging assembly in the process of moving and searching the tooth socket towards the gear side is always in transmission connection with the rotating driving assembly, and the gear is separated from the rotary driving component when the tooth socket is positioned and compressed, the gear in the positioning and clamping process is pressed downwards to abut against a seat pit of a horizontal reference through the matching design between the pressing and holding cylinder and the dredging cylinder, and the pressing and holding component separated from the guide sliding block gradually compresses the guide sliding block and continuously increases along with the moving force of the positioning dredging component through the matching design between the pressing and holding component and the guide sliding block under the linear power of the linear driver until the tooth socket of the gear is completely pressed, so that the technical problem in the background technology is solved.

In order to achieve the purpose, the invention provides the following technical scheme:

a drilling machine for gears for facilitating improvement of machining accuracy, comprising: the drilling tool comprises a drilling tool and a machine frame for driving the drilling tool to adjust the position; it is characterized by also comprising: the drill seat is arranged in a drilling preparation area below the drilling tool; the positioning and inquiring assembly is circumferentially and slidably arranged on the drill seat, and the positioning center of the positioning and inquiring assembly always points to the center of the drill seat; the power end of the pressing driving assembly is connected with the positioning query assembly; the positioning query assembly drives the gear on the drill base to rotate back and forth to search the tooth grooves in the area near the gear, and the pressing and holding driving assembly positions the positioning query assembly after the tooth grooves of the gear are searched, and simultaneously enables the positioning query assembly to be pressed and held in the tooth grooves of the gear.

Further, the location query component comprises: a slide guide portion; the movable bracket is elastically connected to one side of the sliding guide part; the positioning dredging component is arranged on the movable bracket; the rotary driving component is arranged on one side of the positioning dredging component and is elastically arranged on the sliding guide part; the movable support is used for movably guiding the positioning dredging component on the sliding guide part, and the rotating driving component is used for contacting and driving the positioning dredging component.

Further, the slide guide portion includes: an arc-shaped guide rail; and the guide sliding block is arranged on the arc-shaped guide rail in a sliding manner.

Further, the positioning persuasion component comprises: a driven tooth; and the positioning dredging cylinder is arranged below the driven teeth.

Further, the positioning dredging cylinder comprises: a pressing cylinder; the dredging cylinder is arranged at the bottom of the pressing and holding cylinder; the radial dimension of the pressing and holding barrel is larger than that of the guide and guide barrel, and the radial dimension of the pressing and holding barrel connected to the guide and guide barrel is gradually increased.

Further, the rotary drive assembly includes: a holder; the driving tooth is arranged on the retaining seat and corresponds to the driven tooth; and the elastic piece is connected between the retaining seat and the guide sliding block.

Further, the pressing drive assembly comprises: an auxiliary guide part mounted on the drill seat; the linear driver is arranged on the auxiliary guide part, and the power end of the linear driver is connected with the movable bracket; the pressing component is arranged on one side of the sliding guide part; the auxiliary guide part completes the movement guide of the linear driver along with the sliding guide part, and the linear driver drives the moving support to move towards the gear side and simultaneously drives the pressing and holding assembly to limit the movement of the guide slide block.

Further, the pressure holding assembly comprises: the pressing and holding seat is arranged on the drill seat in a sliding manner; the annular moving component is arranged on the moving support in a sliding mode; and the radial moving assembly is elastically connected between the pressing holder and the annular moving assembly.

Further, the pressing holder comprises: moving the body; and the limiting groove body is arranged on one side of the movable body to limit the annular moving range of the guide sliding block.

Further, the drill seat comprises: a seat body; the seat pit is formed in the upper surface of the seat body;

the inner diameter of the seat pit gradually increases from bottom to top.

The invention has the beneficial effects that:

(1) according to the invention, through the common cooperation among the drill base, the positioning query assembly and the pressing and holding driving assembly, the pressing and holding driving assembly is utilized to drive the positioning query assembly to clamp and install the gear on the drill base, and meanwhile, the positioning center of the gear is queried;

(2) according to the invention, through the cooperative matching of the drill base, the positioning query assembly, the pressing and holding drive assembly and the drilling tool, after the positioning query assembly and the pressing and holding drive assembly are used for querying the positioning center on the drill base, the drilling tool can conveniently and accurately process the gear according to the positioning center;

(3) according to the invention, through the structural design of the positioning dredging component, the positioning dredging component reaching the gear side through the pressing driving component is transmitted to the gear, so that the gear rotates back and forth, and the rapid search of the teeth is realized;

(4) according to the invention, through the matching design between the positioning dredging component and the sliding guide part, the positioning dredging component is subjected to adaptive tooth socket searching, so that the tooth socket searching caused by the mismatching of the tooth number and the position of the positioning dredging component is solved;

(5) according to the invention, through the contact transmission type matching design between the positioning dredging component and the rotary driving component, when the positioning area is opened, the positioning dredging component is pressed on the rotary driving component for transmission, and when the positioning dredging component reaches the gear side inquiry tooth socket, the transmission state is always kept, and the transmission is finished after the positioning dredging component extends into the searched tooth socket, so that the transmission stopping treatment is realized when the gear is positioned and clamped;

(6) according to the invention, through the mutual matching between the pressing component and the linear driver, when the linear driver drives the positioning dredging component to move towards the gear side, the pressing component can be gradually pressed on the guide sliding block, and the pressing force of the pressing component on the guide sliding block is gradually increased along with the gradual pressing of the positioning dredging component on the gear until the positioning dredging component is completely pressed in the gear tooth groove;

(7) according to the invention, through the connection and matching of the pressing cylinder and the dredging cylinder, when the pressing cylinder and the dredging cylinder gradually press the gear tooth grooves, a joint surface between the pressing cylinder and the dredging cylinder gradually applies downward stress to press the gear on the bottom surface of the seat pit, so that the gear is positioned under the horizontal reference of the bottom surface of the seat pit;

in conclusion, the gear machining clamping device has the advantages of high gear machining clamping efficiency, accurate gear tooth and tooth gap positioning, accurate gear center positioning and the like.

Drawings

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

FIG. 2 is an enlarged view of the drill seat of FIG. 1 according to the present invention;

FIG. 3 is a schematic structural diagram of a positioning query module and a pressing drive module according to the present invention;

FIG. 4 is an enlarged view of the positioning query assembly and the hold down drive assembly of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the structure of FIG. 4 according to another embodiment of the present invention;

FIG. 7 is a schematic structural view of the positioning dredging cylinder according to the present invention;

FIG. 8 is a schematic view of the gear tooth slot inquiry of the present invention;

FIG. 9 is a schematic view showing the locking gear tooth grooves according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1, a drill press for gears which is advantageous in improving machining accuracy includes:

a drilling tool 100 and a frame 200 for driving the drilling tool 100 to adjust the position;

further comprising:

a drill seat 300, wherein the drill seat 300 is arranged at a drilling preparation area below the drilling tool 100;

the positioning inquiry component 400 is circumferentially and slidably arranged on the drill base 300, and the positioning center of the positioning inquiry component 400 always points to the center of the drill base 300; and

a pressing driving assembly 500, wherein a power end of the pressing driving assembly 500 is connected with the positioning query assembly 400;

the positioning inquiry assembly 400 drives the gear on the drill base 300 to rotate back and forth to search for the tooth socket in the area near the gear, and the pressing and holding driving assembly 500 positions the positioning inquiry assembly 400 after the gear tooth socket is found, and simultaneously enables the positioning inquiry assembly 400 to be pressed and held in the gear tooth socket.

Through the above, it is not easy to find that when a drilling machine is used for positioning and machining a workpiece, the workpiece is often positioned and installed, and then the rotating bed is used for processing the workpiece, but in the process of machining the gear, when a clamp is used for compressing and positioning teeth or tooth spaces between the teeth, the teeth or the tooth spaces are easy to deform or unstable in positioning due to clamping stress, and the gear is positioned and installed in a relatively fixed mode due to different tooth numbers of the gears.

In the present application, before drilling machine processing, a gear is mounted on the drill base 300, specifically, the positioning query assembly 400 arranged circumferentially is opened by the pressing and holding driving assembly 500, so that the gear is placed on the drill base 300 between the positioning query assemblies 400, after the gear is placed, the pressing and holding driving assembly 500 approaches to the gear side, so that the pressing and holding driving assembly 500 contacts with the edge of the gear, as shown in fig. 8, the pressing and holding driving assembly 500 at this time contacts with any possible position of the edge of the gear, then the positioning query assembly 400 drives the gear to rotate back and forth, so that the positioning query assembly 400 can query the position of a tooth slot near the contact position, and the positioning query assembly 400 querying the tooth slot is pressed and positioned in the tooth slot by the pressing and holding driving assembly 500, as shown in fig. 9, so as to realize positioning of the gear on the drill base 300, and the center of the gear when the positioning of the gear is completed is the same as the center of the drill holder 300, i.e., it indicates that the positioning center of the gear is locked, so that the drilling tool 100 is driven by the machine frame 200 to complete accurate machining of the gear with the positioning center determined.

As shown in fig. 2, the location query component 400 includes:

a slide guide portion 41;

a moving bracket 42, wherein the moving bracket 42 is elastically connected to one side of the sliding guide part 41;

a positioning canalizing component 43, wherein the positioning canalizing component 43 is installed on the movable bracket 42; and

a rotation driving assembly 44, wherein the rotation driving assembly 44 is disposed on one side of the positioning dredging assembly 43, and the rotation driving assembly 44 is elastically disposed on the sliding guide portion 41;

the movable bracket 42 guides the positioning dispersion member 43 to move on the slide guide portion 41, and the rotational driving member 44 drives the positioning dispersion member 43 in contact therewith.

In this embodiment, in the process of driving and rotating the gear by using the positioning query module 400, the pressing driving module 500 first transmits power to the moving bracket 42, so that the moving bracket 42 moves toward the side away from the center of the drill base 300, and further drives the positioning dredging module 43 to open the gear placing space, so as to place the gear into the gear placing space, and then the pressing driving module 500 drives the moving bracket 42 to drive the positioning dredging module 43 to press and hold the gear at each position of the gear edge, wherein, as shown in fig. 8, the positioning dredging module 43 at each position of the gear edge may have reached between teeth of the gear or at each position on the teeth, and further the rotating driving module 44 drives the positioning dredging module 43 to reciprocate, so that the rotating positioning dredging module 43 drives the gear to move and at the same time adjusts the position of the gear relative to the sliding guide 41, therefore, the positioning dredging component 43 can quickly search teeth near the contact position of the gear, and after the tooth space position is searched, the pressing driving component 500 continuously drives the movable support 42 to move towards one side of the gear until the positioning dredging component 43 can be completely pressed in the tooth space searched in a positioning mode, and when the positioning dredging component 43 is pressed in the tooth space, the positioning dredging component 43 can also limit the movement of the sliding guide part 41, so that the positioning work of the gear on the drill base 300 is realized, and when the positioning dredging component 43 is pressed in the tooth space, the rotating driving component 44 can be separated from the positioning dredging component 43, so that the transmission of the rotating driving component 44 to the positioning dredging component 43 is stopped, and the gear is continuously pressed on the drill base 300 by the positioning dredging component 43.

It should be noted that, in the process of searching for the tooth socket, the positioning and persuasion assembly 43 has different numbers of gear teeth, so that the positioning and persuasion assembly 43 can have more autonomy when searching for the tooth socket between the teeth through the sliding guide portion 41, and can realize the back-and-forth rotation angle type movement, so that the tooth socket near the gear contact position can be searched for in the nearby area through the manner that the sliding guide portion 41 drives the positioning and persuasion assembly to move.

As shown in fig. 3, the slide guide portion 41 includes:

an arc-shaped guide rail 411; and

and the guide sliding block 412 is arranged on the arc-shaped guide rail 411 in a sliding manner.

In the present embodiment, when the sliding guide portion 41 performs the sliding positioning on the moving bracket 42 and the positioning and persuasive component 43 connected to the moving bracket 42, the guiding slider 412 slidably connected to the arc-shaped guiding rail 411 can keep the positioning and persuasive component 43 and the positioning and persuasive component 42 always aligned with the center of the drill base 300 when the positioning and persuasive component 43 and the moving bracket 42 move.

It is also necessary to supplement that the linear circle center of the track of the arc-shaped guide rail 411 is coincident with the center of the drill base 300.

In this embodiment, the linear center of the track of the arc-shaped guide rail 411 coincides with the center of the drill base 300, so that the moving direction of the guide slider 412 can always surround the track center of the arc-shaped guide rail 411, and the moving bracket 42 connected to the guide slider 412 and the guide slider 412 can always point to the center of the drill base 300 on the moving path.

As shown in fig. 3 and 4, the positioning canalizing assembly 43 comprises:

a driven tooth 431; and

and the positioning dredging cylinder 432 is arranged below the driven teeth 431.

In this embodiment, in the process that the positioning persuasion assembly 43 is driven by the rotation driving assembly 44 to rotate back and forth, the power is output to the driven teeth 431 through the rotation driving assembly 44, so as to drive the driven teeth 431 to rotate, the driven teeth 431 can further transmit the power to the positioning persuasion cylinder 432 below the driven teeth 431, so that the rotating positioning persuasion cylinder 432 rotates back and forth at the contact position with the gear, so as to enable the gear to be driven to rotate between the positioning persuasion cylinders 432 through the action of friction force, and when the positioned gear is heavy and cannot rotate fast to complete the query of the gear tooth socket, the rotating positioning persuasion cylinder 432 can also enable the arc-shaped guide rail 411 to drive the positioning persuasion assembly 43 to move reversely, thereby realizing the self-adaptive search of the gear tooth socket. Therefore, the rapidity of inquiring the tooth grooves on the gear can be improved.

It should be added that, as shown in fig. 5, the moving bracket 42 includes a frame-shaped pushing guide 421, a moving guide 422 with one end connected to the pushing guide 421, and a first spring 423 connected between the pushing guide 421 and the guide slider 412, one side of the pushing guide 421 is open, the driven teeth 431 are rotatably installed between the upper and lower sides of the opening, and the positioning dredging cylinder 432 is disposed at one side of the bottom of the opening.

In this embodiment, when the pushing guide plate 421 is driven by the pressing driving component to move back and forth, the driven tooth 431 is driven to rotate when approaching and contacting the rotating driving component 44, and the positioning dredging cylinder 432 is driven to rotate back and forth, so as to query the position of the tooth groove on the gear.

As shown in fig. 7, the positioning dredging cylinder 432 includes:

a pressure holding cylinder 4321; and

the dredging cylinder 4322 is arranged at the bottom of the pressing cylinder 4321;

the radial dimension of the pressure holding cylinder 4321 is larger than that of the dredging cylinder 4322, and the radial dimension of the pressure holding cylinder 4321 connected to the dredging cylinder 4322 is gradually increased.

In this embodiment, during the positioning and pressing process of the positioning and dredging cylinder 432 on the found gear tooth socket, the pressing and driving assembly 500 is used to drive and move the moving bracket 42, so that the positioning and dredging cylinder 432 is gradually inserted into the tooth socket to contact with two adjacent tooth flanks, and the upper surface of the gear always abuts against the position a in fig. 7, and the radial dimension of the cross section of the connection position between the pressing and dredging cylinder 4321 and the dredging cylinder 4322 formed at the position a is continuously increased from bottom to top, so that the position a always presses the gear between the gear and the drill base 300, and the positioning of the positioned gear can be completed depending on the horizontal reference of the drill base 300 on the horizontal plane.

As shown in fig. 5, the rotary drive assembly 44 includes:

a holder 441;

a driving tooth 442, wherein the driving tooth 442 is disposed on the holder 441, and the driving tooth 442 corresponds to the driven tooth 431; and

an elastic member 443, the elastic member 443 being connected between the holder 441 and the guide slider 412.

In this embodiment, when the rotary driving assembly 44 drives and rotates the positioning dredging cylinder 432, and when the driven teeth 431 gradually approach and contact the rotary driving assembly 44, the driven teeth 431 will contact the driving teeth 442 first, so that the driving teeth 442 will transmit power to the driven teeth 431, and then the driven teeth 431 will be driven to rotate the positioning dredging cylinder 432, thereby realizing the tooth socket searching operation between the teeth on the gear.

It should be noted that, when the positioning and canalizing member 43 gradually approaches and contacts the rotary driving member 44, in order to better realize the rotation of the driven tooth 431 in the relative movement state, the positioning and canalizing member 43 can also move towards the side far away from the center of the drill base 300 by the driven tooth 431 continuously pressing the driving tooth 442, so that the elastic member 443 connected with the guide slider 412 on the holding base 441 is in the pressed state, at this time, the gear is put in again, and after the gear is put in, when the gear tooth slot is searched, the positioning and canalizing member 43 gradually moves towards the side of the center of the drill base 300, at this time, the elastic member 443 has the releasing capacity, so that the driving tooth 442 can still keep the engaged state with the driven tooth 431 for a certain movement distance, and when the positioning and canalizing member 43 gradually abuts against the tooth flank surface of the gear tooth, at this time, the elastic member 443 has separated from the driving tooth 431 due to the maximum elastic length, the positioning canalizing member 43 separated from the driving tooth 442 is continuously moved toward the gear side to press and position the tooth flank of the gear.

Additionally, a forward and reverse rotation motor 444 is further disposed on one side of the bottom of the holder 441, and a power end of the forward and reverse rotation motor 444 is connected to the driving tooth 442.

In this embodiment, the driving teeth 442 are driven by a forward and reverse rotation motor 444 as a driving power to continuously complete forward and reverse rotation, so that the driving teeth 442 are transmitted to the driven teeth 431, and the positioning dredging cylinder 432 is driven to synchronously rotate, so as to perform reciprocating rotation transmission on the contact position of the gear, and find the tooth space position between the teeth on the gear.

It is also necessary to supplement that the elastic member 443 further includes a guide bar 4431 connected with the holder 441 and a second spring 4432 connected between the holder 441 and the guide slider 412, and the other end of the guide bar 4431 is movably inserted on the guide slider 412.

In this embodiment, during the process of energy storage of the elastic member 443, the second spring 4432 is compressed, and the guide rod 4431 moves toward the side connected with the guide slider 412, and when the second spring 4432 extends to the reset position, the guide rod 4431 performs the movement guiding work on the driving tooth 442 toward the end away from the end connected with the guide slider 412.

As shown in fig. 3, the drill seat 300 includes:

a seat body 31; and

a seat 32, the seat 32 being opened on an upper surface of the seat body 31;

the inner diameter of the seating pit 32 gradually increases from bottom to top.

In the embodiment, when the gear is placed between the positioning inquiry assemblies 400, by placing the gear in the seat pit 32 on the seat body 31, and the positioning center of the seat pit 32 is preferably the positioning center of the drill seat 300, and the radial dimension of the seat pit 32 is always larger than the radial dimension of the gear, after the gear is placed in the seat pit 32, the gear gradually slides down along the edge of the seat pit 32 to the bottom surface of the seat pit 32, and even if the gear completely slides down in the seat pit 32, the pressing and holding driving assembly 500 continuously pushes the positioning inquiry assembly 400 to push the gear into the seat pit 32, so that the bottom surface of the gear can contact with the bottom surface of the seat pit 32, and the gear can be prevented from leaving the positioning range in a large range through the set seat pit 32, and the positioning work cannot be completed.

Example two

As shown in fig. 2, in which the same or corresponding components as in the first embodiment are denoted by the same reference numerals as in the first embodiment, only the points of difference from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that: the pressing driving assembly 500 includes:

an auxiliary guide part 51, the auxiliary guide part 51 being mounted on the drill seat 300;

a linear actuator 52, wherein the linear actuator 52 is disposed on the auxiliary guide part 51, and a power end of the linear actuator 52 is connected to the movable bracket 42;

a pressing member 53, the pressing member 53 being provided on one side of the slide guide portion 41;

the auxiliary guide portion 51 performs the movement guide of the linear actuator 52 following the slide guide portion 41, and the linear actuator 52 drives the moving bracket 42 to move toward the gear side while driving the pressing member 53 to restrict the movement of the guide slider 412.

In this embodiment, during the driving process of the pressing and holding driving assembly 500, the linear driver 52 moves along the guiding direction of the sliding guiding portion 41 through the auxiliary guiding portion 51 to perform position adaptive adjustment, and after the adjustment is completed, that is, after the location and inquiry assembly 400 finishes searching for the tooth socket between the teeth of the gear, the linear driver 52 continuously drives the location and inquiry assembly 400 to move towards the tooth socket side, so that the location and inquiry assembly 400 can be pressed against the side edge of the tooth, at the same time, the pressing and holding assembly 53 also moves towards the side of the guiding slider 412 under the power of the linear driver 52 to perform pressing treatment on the guiding slider 412, and after the pressing, the linear driver 52 continuously drives the location and inquiry assembly 400 to move, so that the location and inquiry assembly 400 is completely pressed between the adjacent tooth surfaces.

It should be added that the linear drive 52 is preferably a hydraulic ram.

In this embodiment, the linear driver 52, preferably a hydraulic push rod, is used to pull the positioning query assembly 400 away from the working area, so that the gear is placed in the positioning area on the drill base 300, and the positioning query assembly 400 is driven by the hydraulic push rod gradually to move towards one side of the gear, thereby completing the gear tooth space searching and subsequent gear positioning work.

It should be added that, as shown in fig. 3, the auxiliary guide part 51 includes an auxiliary guide rail 511 and an auxiliary slider 512, the auxiliary slider 512 is slidably disposed on the auxiliary guide rail 511, and the linear actuator 52 is mounted on the auxiliary guide rail 511.

In this embodiment, in the process that the sliding guide portion 41 drives the positioning query module 400 to query the tooth grooves on the gear, the positioning query module 400 moves back and forth on the sliding guide portion 41, and the linear driver 52 at this time also moves precisely along with the auxiliary sliding block 512 under the guiding action of the auxiliary guide rail 511.

As shown in fig. 3, the pressing member 53 includes:

a pressing seat 531 arranged on the drill seat 300 in a sliding manner;

a circular moving component 532 slidably disposed on the moving support 42; and

a radial moving assembly 533 elastically connected between the pressing holder 531 and the annular moving assembly 532.

In this embodiment, when the pressing and holding assembly 53 restricts the movement of the guide slider 412, the linear actuator 52 transmits power to the pressing and holding base 531 through the radial moving assembly 533 which is elastically arranged, so as to drive the pressing and holding base 531 to gradually move towards the guide slider 412 until the pressing and holding base 531 gradually presses against the guide slider 412, and the radial moving assembly 533 is in a contracted state at the time of pressing, and after pressing the guide slider 412, the linear actuator 52 continuously pushes the positioning inquiry assembly 400 to move towards the side of the gear, so that the positioning inquiry assembly 400 is completely pressed in the tooth grooves of the gear.

It should be added that, as shown in fig. 6, the annular moving assembly 532 includes a sliding groove 5321 opened on the moving bracket 42, a guide block 5322 slidably disposed in the sliding groove 5321, and a third spring 5323 connected between the guide block 5322 and the sliding groove 5321, and the radial moving assembly 533 is connected to the guide block 5322.

In this embodiment, when the position query module 400 queries the gear slot position, the sliding guide 41 will move back and forth along the guiding direction, and in order to better achieve the adaptive position adjustment of the movable bracket 42, the guide block 5322 is used to ensure the radial connection relationship with the pressing holder 531 when the movable bracket 42 is shifted to one side.

It should be noted that the moving direction of the guide block 5322 in the sliding groove 5321 is an arc track coinciding with the center of the arc track of the arc guide rail 411.

In this embodiment, the guide block 5322 is guided by the slide groove 5321 having an arc track, so that the guide block 5322 can be synchronized with the movement of the positioning query module 400.

It should be added that, as shown in fig. 4, the radial moving assembly 533 includes a telescopic rod 5331 having one end connected to the pressing holder 531 and a fourth spring 5332 connected between the pressing holder 531 and the moving bracket 42.

In this embodiment, when the linear actuator 52 drives the moving bracket 42 to move toward the gear side, the pressing holder 531 is pressed on the guide slider 412, the fourth spring 5332 is compressed by the guiding action of the telescopic rod 5331, and when the linear actuator 52 continuously drives the positioning query module 400, the pressing holder 531 is continuously pressed on the guide slider 412.

As shown in fig. 4, the pressure holder 531 includes:

a moving body 5311; and

the limiting groove body 5312 is arranged on one side of the moving body 5311 and limits the annular moving range of the guide sliding block 412.

In this embodiment, the limiting groove 5312 is set on the pressing holder 531, when the moving body 5311 is separated from the guiding slider 412, the guiding slider 412 is always located within the range of the limiting groove 5312, so as to prevent the moving range of the location query module 400 from being too large, and the limiting groove 5312 enables the rotation angle of the location query module 400 to move to be preferably a rotation angle between 3 teeth.

The working steps are as follows:

step one, opening a positioning area, wherein a pressing and holding driving assembly 500 drives a positioning inquiry assembly 400 to move towards one side far away from the center of a drill base 300 on the drill base 300, and a gear to be machined is placed into a base pit 32 on a base body 31;

step two, contact transmission, after the positioning inquiry assembly 400 is far away from the center side of the drill base 300, the driven tooth 431 on the movable bracket 42 gradually approaches the rotary driving assembly 44 and is in contact engagement with the rotary driving assembly 44, and continuously moves towards the side far away from the center of the drill base 300, and the elastic part 443 gradually stores elastic potential energy until the positioning area is completely opened;

step three, contacting the gear, after the gear reaches the seat pit 32, pushing the positioning dredging cylinder 432 on the positioning query assembly 400 to approach and contact the gear by the pressing and holding driving assembly 500, and transmitting the gear to the gear, wherein the gear contacting the positioning dredging cylinder 432 is transmitted by the positioning dredging cylinder 432 which rotates back and forth in a reciprocating manner to rotate back and forth in a reciprocating manner, and meanwhile, the moving support 42 also rotates around the center of the drill seat 300 under the guiding action of the sliding guide part 41, and meanwhile, the moving support 42 also enables the annular moving assembly 532 and the auxiliary guide part 51 to perform adaptive adjustment on the positions;

step four, positioning and searching, namely, when the rotating positioning dredging cylinder 432 is elastically connected to the guide sliding block 412 under the action of the movable support 42, and when the positioning dredging cylinder 432 is searched for a gear tooth groove, the movable support 42 can push the positioning dredging cylinder 432 to reach the gear tooth groove;

step five, positioning and clamping, after the gear tooth socket is found, the pressing and driving assembly 500 starts to work to drive the positioning dredging cylinder 432 to move towards one side of the tooth socket, meanwhile, the pressing and holding seat 531 is pressed on the guide sliding block 412, and along with the linear driver 52 gradually driving the moving support 42, the pressing and holding seat 531 continuously increases the pressing force on the guide sliding block 412 through the radial moving assembly 533 until the positioning dredging cylinder 432 is completely pressed on the tooth side surfaces at two sides of the tooth socket;

sixthly, horizontal positioning is performed, when the positioning dredging cylinder 432 gradually compresses the gear tooth grooves, one side of the top of the gear is downwards compressed in the seat pit 32 at the position a between the pressing cylinder 4321 and the dredging cylinder 4322, and the gear is compressed through the positioning query assembly 400 to complete center search of the gear;

and step seven, machining the gear, wherein the rack 200 drives the drilling tool 100 to move according to the searched gear center so as to machine the preset gear position.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A drilling machine for gears for facilitating improvement of machining accuracy, comprising:

a drilling tool (100) and a frame (200) for driving the drilling tool (100) to adjust the position;

it is characterized by also comprising:

the drill seat (300) is arranged at a drilling preparation area below the drilling tool (100);

the positioning and inquiring assembly (400) is arranged on the drill base (300) in a circumferential sliding mode, and the positioning center of the positioning and inquiring assembly (400) always points to the center of the drill base (300); and

the power end of the pressing driving assembly (500) is connected with the positioning inquiry assembly (400);

the positioning query assembly (400) drives the gear on the drill base (300) to rotate back and forth to search the tooth grooves in the area near the gear, and the pressing and holding driving assembly (500) positions the positioning query assembly (400) after the tooth grooves of the gear are searched, and simultaneously enables the positioning query assembly (400) to be pressed and held in the tooth grooves of the gear;

the location query component (400) comprises:

a slide guide (41);

a moving bracket (42), wherein the moving bracket (42) is elastically connected to one side of the sliding guide part (41);

a positioning canalizing component (43), wherein the positioning canalizing component (43) is installed on the moving bracket (42); and

the rotating driving assembly (44) is arranged on one side of the positioning dredging assembly (43), and the rotating driving assembly (44) is elastically arranged on the sliding guide part (41);

the movable support (42) movably guides the positioning dredging component (43) on the sliding guide part (41), and the rotating driving component (44) is contacted with and drives the positioning dredging component (43).

2. A drilling machine for gears, which facilitates improvement of machining accuracy according to claim 1, wherein the slide guide portion (41) includes:

an arc-shaped guide rail (411); and

and the guide sliding block (412) is arranged on the arc-shaped guide rail (411) in a sliding manner.

3. The drilling machine for gears, which is advantageous for improving the machining precision according to claim 2, wherein the positioning and canalizing assembly (43) comprises:

a driven tooth (431); and

and the positioning dredging cylinder body (432), wherein the positioning dredging cylinder body (432) is arranged below the driven tooth (431).

4. The drilling machine for gears, which is advantageous for improving the machining precision according to claim 3, wherein the positioning canalizing cylinder (432) comprises:

a pressure-holding cylinder (4321); and

the guide cylinder (4322) is arranged at the bottom of the pressing cylinder (4321);

the radial dimension of the pressing and holding barrel (4321) is larger than that of the guide and guide barrel (4322), and the radial dimension of the pressing and holding barrel (4321) connected to the guide and guide barrel (4322) is gradually increased.

5. A gear drilling machine facilitating improved machining accuracy according to claim 3, wherein the rotary drive assembly (44) comprises:

a holder (441);

a driving tooth (442), wherein the driving tooth (442) is arranged on the holding seat (441), and the driving tooth (442) corresponds to the driven tooth (431); and

an elastic member (443), the elastic member (443) being connected between the holder (441) and the guide slider (412).

6. The drilling machine for gears, which facilitates improvement of machining accuracy according to claim 2, wherein the pressing drive assembly (500) comprises:

an auxiliary guide part (51), the auxiliary guide part (51) being mounted on the drill seat (300);

the linear driver (52), the said linear driver (52) is set in the said auxiliary guide part (51), and the power end of the said linear driver (52) links with said movable support (42);

a pressing component (53), wherein the pressing component (53) is arranged on one side of the sliding guide part (41);

the auxiliary guide part (51) completes the moving guide of the linear driver (52) along with the sliding guide part (41), and the linear driver (52) drives the moving bracket (42) to move towards the gear side and simultaneously drives the pressing and holding assembly (53) to limit the movement of the guide slider (412).

7. The drilling machine for gears, which facilitates the improvement of the machining accuracy according to claim 6, wherein the pressure holding assembly (53) comprises:

a pressing and holding seat (531) arranged on the drill seat (300) in a sliding manner;

a circular moving component (532) arranged on the moving bracket (42) in a sliding way; and

a radial moving assembly (533) elastically connected between the pressure holder (531) and the annular moving assembly (532).

8. The gear drilling machine facilitating improvement of machining accuracy according to claim 7, wherein the pressure holder (531) includes:

a moving body (5311); and

the limiting groove body (5312) is arranged on one side of the moving body (5311) and limits the annular moving range of the guide sliding block (412).

9. A drilling machine for gears, which facilitates to improve the machining accuracy, according to claim 1, characterized in that the drill base (300) comprises:

a seat body (31); and

a seat pit (32), wherein the seat pit (32) is arranged on the upper surface of the seat body (31);

the inner diameter of the seat pit (32) is gradually increased from bottom to top.