CN109268327A - Horizontal broaching machine and its hydraulic system - Google Patents

Horizontal broaching machine and its hydraulic system Download PDF

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Publication number
CN109268327A
CN109268327A CN201811357225.7A CN201811357225A CN109268327A CN 109268327 A CN109268327 A CN 109268327A CN 201811357225 A CN201811357225 A CN 201811357225A CN 109268327 A CN109268327 A CN 109268327A
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CN
China
Prior art keywords
oil cylinder
oil
main
reversal valve
branch
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Pending
Application number
CN201811357225.7A
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Chinese (zh)
Inventor
赵建华
陈留洋
李敢
刘代波
李红术
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Changsha Si Sheng Intelligence Devices S R L
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Changsha Si Sheng Intelligence Devices S R L
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Application filed by Changsha Si Sheng Intelligence Devices S R L filed Critical Changsha Si Sheng Intelligence Devices S R L
Priority to CN201811357225.7A priority Critical patent/CN109268327A/en
Publication of CN109268327A publication Critical patent/CN109268327A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The embodiment of the present invention provides a kind of horizontal broaching machine and its hydraulic system, and the hydraulic system includes main in-line, main oil return line, workpiece positioning branch and work branch;The workpiece positioning branch includes the first oil cylinder, the first reversal valve and check valve, first oil cylinder is connected to by first reversal valve with the main in-line and the main oil return line, and the check valve is set on the oil circuit between first reversal valve and the main in-line;The work branch includes the second oil cylinder and the second reversal valve, and second oil cylinder is connected to by second reversal valve with the main in-line and the main oil return line.The embodiment of the present invention can share an oil pump, reduce the quantity of oil pump and fluid pressure line by setting check valve, workpiece positioning branch and work branch, be convenient for fluid pressure line centralized arrangement, so that hydraulic stringing is succinct, is convenient for subsequent maintenance.

Description

Horizontal broaching machine and its hydraulic system
Technical field
The present invention relates to machine tooling technical field more particularly to a kind of horizontal broaching machine and its hydraulic systems.
Background technique
In the horizontal broaching machine course of work, it is necessary first to by workpiece compression and tensioner, in other station manipulations, for example, Turntable rotation, workbench advance and retreat, workbench wedging, Auxiliary support locking etc., it is necessary to work be kept to be in compression and tensioner always Otherwise state will lead to work and fly out or fall off.The above-mentioned back work system of horizontal broaching machine belongs to small flow hydraulic system, because This, the reversal valve in the hydraulic system uses slide valve, and hydraulic oil leakage is more serious in use for slide valve, thus may be used Workpiece turgor cylinder and compressed oil cylinder pressure can be caused to decline, workpiece is caused to loosen, fall off.It is existing in order to avoid the situation In technology, hydraulic system fuel feeding is given using duplex pump, workpiece turgor cylinder and workpiece compressed oil cylinder share a pump, be always ensured that The oil circuit of two oil cylinders has the hydraulic oil of enough pressure, remaining station shares a pump, i.e., by workpiece tensioner and workpiece compressed oil cylinder In-line and other secondary stations in-line separate, avoid interfering with each other.
Above-mentioned hydraulic system needs two sets of independent hydraulic circuits, needs two hydraulic pumps, hydraulic stringing complicated, peace Space needed for filling is larger, higher cost.
Summary of the invention
In view of this, a kind of an embodiment of the present invention is intended to provide hydraulic stringings horizontal broaching machine and its liquid simple, at low cost Pressure system.
In order to achieve the above objectives, the embodiment of the present invention provides a kind of hydraulic system of horizontal broaching machine, including oil pump, fuel tank, The main in-line being connected to the oil pump, the main oil return line, workpiece positioning branch and the work branch that are connected to fuel tank, the work Part position branch include the first oil cylinder, the first reversal valve and check valve, first oil cylinder by first reversal valve with The main in-line is connected to the main oil return line, the check valve be set to first reversal valve and the main in-line it Between oil circuit on;The work branch includes the second oil cylinder and the second reversal valve, and second oil cylinder is changed by described second It is connected to valve with the main in-line and the main oil return line.
Further, the workpiece positioning branch includes the input pressure progress for the rod chamber to first oil cylinder The pressure reducing valve of decompression, the pressure reducing valve are set on the oil circuit between first reversal valve and check valve.
Further, first reversal valve is solenoid directional control valve, and first reversal valve includes the first working position, second Working position and third working position, first reversal valve are in the first working position, and the rod chamber of first oil cylinder passes through institute It states the first reversal valve to be connected to the main in-line, the rodless cavity of first oil cylinder passes through first reversal valve and the master Oil return line connection;First reversal valve is in the second working position, rod chamber and the rodless cavity cut-off of first oil cylinder;It is described First reversal valve is in third working position, and the rodless cavity of first oil cylinder passes through first reversal valve and the main in-line The rod chamber of connection, first oil cylinder is connected to by first reversal valve with the main oil return line;The pressure reducing valve and institute The linkage of the first reversal valve is stated, when first reversal valve is in the first working position, the pressure reducing valve is in decompression state;When described First reversal valve is in third working position, and the pressure reducing valve is in normally open.
Further, workpiece positioning branch includes the first one-way throttle valve and the second one-way throttle valve, and described first One-way throttle valve is set on the oil circuit between the rod chamber of first oil cylinder and first reversal valve, and described second is unidirectional Throttle valve is set on the oil circuit between the rodless cavity of first oil cylinder and first reversal valve.
Further, the quantity of the workpiece positioning branch is two, and two workpiece positioning branch circuit parallel connections are described Between main in-line and the main oil return line;First oil cylinder of one of them workpiece positioning branch road is workpiece tensioner oil Cylinder, wherein the first oil cylinder of another workpiece positioning branch road is workpiece compressed oil cylinder.
Further, the quantity of the work branch is a plurality of, and a plurality of work branch is connected in parallel on the main in-line Between the main oil return line;Second oil cylinder of one of them described work branch is turntable oil cylinder, wherein another described Second oil cylinder of work branch is workbench advance and retreat oil cylinder '.
The second aspect of the embodiment of the present invention provides a kind of horizontal broaching machine, including workbench, for protruding into inner hole of workpiece The hydraulic system of tensioner and any of the above-described horizontal broaching machine, at least 1 first oil cylinder and tensioner driving connect It connects to drive tensioner tensioner or unclamp workpiece;At least 1 second oil cylinder and the workbench are drivingly connected to drive work Platform moves forward or back.
Further, the horizontal broaching machine includes the compressing member for being pressed against workpiece one end, and the workpiece positions branch Quantity be two, two work positioning branch circuit parallel connections between the main in-line and the main oil return line, wherein it First oil cylinder of one workpiece positioning branch and the tensioner are drivingly connected, wherein the of another workpiece positioning branch One oil cylinder and the compressing member are drivingly connected.
Further, the quantity of the work branch is a plurality of, and a plurality of work branch is connected in parallel on the main in-line Between the main oil return line;The horizontal broaching machine further includes turntable, wherein second oil cylinder of a work branch is Turntable oil cylinder, the turntable oil cylinder and the turntable are drivingly connected to drive the turntable to rotate.
In the embodiment of the present invention, by the way that check valve is arranged, workpiece positioning branch and work branch is allowed to share one Oil pump reduces the quantity of oil pump quantity and fluid pressure line;Furthermore workpiece positioning branch and work branch be connected in parallel on main in-line and Between main oil return line, it is convenient for fluid pressure line centralized arrangement, so that hydraulic stringing is succinct, is convenient for subsequent maintenance (hydraulic tube number Amount is reduced, stringing is succinct, can rapidly find fault point).
Detailed description of the invention
Fig. 1 is the hydraulic schematic diagram of the hydraulic system of the horizontal broaching machine of the embodiment of the present invention.
Description of symbols
Main in-line 10;Main oil return line 11;Workpiece positions branch 20;Ffirst cylinder 21;Turgor cylinder 21 ';Compressed oil cylinder 21";First reversal valve 22;Check valve 23;First one-way throttle valve 24;Second one-way throttle valve 25;Pressure reducing valve 26;Work branch 30;Second oil cylinder 31;Workbench advance and retreat oil cylinder 31 ';Turntable oil cylinder 31 ";Second reversal valve 32
Specific embodiment
The embodiment of the present invention provides a kind of horizontal broaching machine, which includes workbench (not shown), broaching tool (not shown), turns Platform (not shown), the tensioner (not shown) for tensioner workpiece, the compressing member (not shown) for workpiece pressing and hydraulic System.When broaching machine works, tensioner positions workpiece from inside tensioner workpiece, prevents workpiece along perpendicular to its axial direction Transverse shifting, compressing member are connected to the end face of workpiece, prevent workpiece from moving along its axis.Workbench can lock broaching tool, drive Broaching tool is slided along lathe bed level with workpiece of broaching.
Referring to Fig. 1, hydraulic system include oil pump P0, fuel tank T0, the main in-line 10 being connected to oil pump P0 and with oil Main oil return line 11, workpiece positioning branch 20 and the work branch 30 of case T0 connection, workpiece positioning branch 20 and work branch 30 It is connected in parallel between main in-line 10 and main oil return line 11.Workpiece position branch 20 include Ffirst cylinder 21, the first reversal valve 22 with And check valve 23, Ffirst cylinder 21 are connected to by the first reversal valve 22 with main in-line 10 and main oil return line 11, check valve 23 is set It is placed on the oil circuit between the first reversal valve 22 and main in-line 10;Work branch 30 includes the second oil cylinder 31 and the second commutation Valve 32, the second oil cylinder 31 are connected to by the second reversal valve 32 with main in-line 10 and main oil return line 11.Workpiece positions in branch 20 Ffirst cylinder 21 for driving tensioner and/or compressing member etc. to fix the position of workpiece.The second oil in work branch 30 Cylinder 31 is used to drive the other structures other than workpiece positioning, such as workbench or turntable etc..
The hydraulic system of the embodiment of the present invention, by the way that check valve is arranged between the first reversal valve 22 and main in-line 10 23, decline when the first reversal valve 22 causes the workpiece in 23 downstream of check valve to position the oil pressure on branch 20 due to leakage etc. When, the hydraulic oil on main in-line 10 through check valve 23 to its repairing so that on the workpiece positioning branch 20 of the lower oil of check valve 23 Oil pressure be maintained.In addition, when in work branch 30 the second reversal valve 32 and the second oil cylinder 31 starting work when, will cause The hydraulic oil pressure fluctuation of main in-line 10, the pressure on main in-line 10 may reduce moment, since check valve 23 is unidirectionally cut Only, the pressure oscillation on winner's in-line 10 is made to will not influence the oil pressure on the workpiece positioning branch 20 in 23 downstream of check valve, no The positioning of workpiece can be interfered.Therefore, in the embodiment of the present invention, by the way that check valve 23 is arranged, so that workpiece positioning branch 20 and work An oil pump P0 can be shared by making branch 30, reduce the quantity of oil pump P0 quantity and fluid pressure line, concentrate cloth convenient for fluid pressure line It sets, so that hydraulic stringing is succinct, convenient for subsequent maintenance, (fluid pressure line quantity is reduced, stringing is succinct, can rapidly find event Barrier point).
In the present embodiment, the quantity that workpiece positions branch 20 is two, and two workpiece positioning branches 20 are connected in parallel on main oil inlet Between road 10 and main oil return line 11, wherein the Ffirst cylinder 21 of workpiece positioning branch 20 is turgor cylinder 21 ', turgor cylinder 21 ' are drivingly connected with tensioner;Wherein the Ffirst cylinder 21 of another workpiece positioning branch 20 is compressed oil cylinder 21 ", compressed oil cylinder 21 " are drivingly connected with compressing member.It is understood that if horizontal broaching machine is only configured with a positioning device, such as only configure When tensioner or compressing member, the quantity of workpiece positioning branch 20 only needs one;If horizontal broaching machine is configured with more The mechanism of a position for being used to fix workpiece, then corresponding matching increases the quantity of workpiece positioning branch 20 therewith.
It further includes pressure reducing valve 26, the first one-way throttle valve 24 and the second one-way throttle valve 25 that workpiece, which positions branch 20, is subtracted Pressure valve 26 is arranged on the oil circuit between the first reversal valve 22 and check valve 23, which is used for Ffirst cylinder 21 The input pressure of rod chamber is depressurized, to limit the maximum pressure of 1 rod chamber of Ffirst cylinder 2.It should be noted that the decompression Valve 26 and the first reversal valve 22 link, and only depressurize to the rod chamber of Ffirst cylinder 21, do not depressurize to the rodless cavity of Ffirst cylinder 21.
First one-way throttle valve 24 is set on the oil circuit between the rod chamber of Ffirst cylinder 21 and the first reversal valve 22, when Hydraulic oil through the first reversal valve 22 enter 1 rod chamber of Ffirst cylinder 2 when, the first one-way throttle valve 24 does not throttle, when hydraulic oil from When the rod chamber of Ffirst cylinder 21 flows to the first reversal valve 22 and then oil return, the first check valve 23 is in throttle, with control The oil return speed of 1 rod chamber of Ffirst cylinder 2, compensator or trimmer pressure impact.Second one-way throttle valve 25 is set to the nothing of Ffirst cylinder 21 On oil circuit between rod cavity and the first reversal valve 22, when hydraulic oil enters 1 rodless cavity of Ffirst cylinder 2 through the first reversal valve 22, Second one-way throttle valve 25 does not throttle, when hydraulic oil flows to the first reversal valve 22 and then oil return from the rodless cavity of Ffirst cylinder 21 When, second one-way valve 23 is in throttle, to control the oil return speed of 1 rodless cavity of Ffirst cylinder 2, compensator or trimmer pressure impact.
In the present embodiment, the first reversal valve 22 is solenoid directional control valve, and the first reversal valve 22 includes the first working position, the second work Make position and third working position, the first reversal valve 22 is in the first working position, and the rod chamber of Ffirst cylinder 21 passes through the first commutation Valve 22 is connected to main in-line 10;The rodless cavity of Ffirst cylinder 21 is connected to by the first reversal valve 22 with main oil return line 11;First Reversal valve 22 is in the second working position, rod chamber and the rodless cavity cut-off of Ffirst cylinder 21;First reversal valve 22 is in third work Make position, the rodless cavity of Ffirst cylinder 21 is connected to by the first reversal valve 22 with main in-line 10, and the rod chamber of Ffirst cylinder 21 is logical The first reversal valve 22 is crossed to be connected to main oil return line 11;Pressure reducing valve 26 and the first reversal valve 22 link, when the first reversal valve 22 is in First working position, pressure reducing valve 26 are in decompression state;When the first reversal valve 22 is in third working position, pressure reducing valve 26 is in normally opened State.Solenoid directional control valve is conducive to automatically control, and promotes the degree of automation of horizontal broaching machine.Further, the first reversal valve 22 is Slide valve.
In the present embodiment, the quantity of work branch 30 be it is a plurality of, a plurality of work branch 30 is connected in parallel on main in-line 10 and main Between oil return line 11, the second oil cylinder 31 in a work branch 30 is turntable oil cylinder 32 ", and turntable oil cylinder 32 " is connect with turntable, is used In driving turntable rotation, to adjust the position of workpiece;The second oil cylinder 31 in another work branch 30 is workbench advance and retreat oil cylinder 31 ', the workbench advance and retreat oil cylinder 31 ' and workbench are drivingly connected, for driving workbench to drive broaching tool broaching workpiece.It can manage Solution, the present embodiment only illustrate two work branch 30, and the quantity of work branch 30 can be according to actual needs It is increased and decreased.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.

Claims (9)

1. the hydraulic system of horizontal broaching machine, including oil pump (P0), fuel tank (T0), the main in-line being connected to the oil pump (P0) (10) and with fuel tank (T0) the main oil return line (11) being connected to, which is characterized in that the hydraulic system includes workpiece positioning branch (20) and work branch (30), workpiece positioning branch (20) and the work branch (30) are connected in parallel on the main oil inlet Between road (10) and the main oil return line (11);Workpiece positioning branch (20) includes the first oil cylinder (21), the first reversal valve (22) and check valve (23), first oil cylinder (21) by first reversal valve (22) and the main in-line (10) and Main oil return line (11) connection, the check valve (23) are set to first reversal valve (22) and the main in-line (10) Between oil circuit on;The work branch (30) includes the second oil cylinder (31) and the second reversal valve (32), second oil cylinder (31) it is connected to by second reversal valve (32) with the main in-line (10) and the main oil return line (11).
2. hydraulic system according to claim 1, which is characterized in that workpiece positioning branch (20) includes for institute The pressure reducing valve (26) that the input pressure of the rod chamber of the first oil cylinder (21) is depressurized is stated, the pressure reducing valve (26) is set to described On oil circuit between first reversal valve (22) and check valve (23).
3. hydraulic system according to claim 2, which is characterized in that first reversal valve (22) is solenoid directional control valve, First reversal valve (22) includes the first working position, the second working position and third working position, first reversal valve (22) In the first working position, the rod chamber of first oil cylinder (21) passes through first reversal valve (22) and the main in-line (10) it is connected to, the rodless cavity of first oil cylinder (21) is connected by first reversal valve (22) and the main oil return line (11) It is logical;First reversal valve (22) is in the second working position, rod chamber and the rodless cavity cut-off of first oil cylinder (21);It is described First reversal valve (22) is in third working position, the rodless cavity of first oil cylinder (21) by first reversal valve (22) with Main in-line (10) connection, the rod chamber of first oil cylinder (21) are returned by first reversal valve (22) and the master Oil circuit (11) connection;The pressure reducing valve (26) and first reversal valve (22) are linked, when first reversal valve (22) is in First working position, the pressure reducing valve (26) are in decompression state;It is described when first reversal valve (22) is in third working position Pressure reducing valve (26) is in normally open.
4. hydraulic system according to claim 1, which is characterized in that workpiece positioning branch (20) includes first unidirectional Throttle valve (24) and the second one-way throttle valve (25), first one-way throttle valve (24) are set to first oil cylinder (21) On oil circuit between rod chamber and first reversal valve (22), second one-way throttle valve (25) is set to first oil On oil circuit between the rodless cavity of cylinder (21) and first reversal valve (22).
5. hydraulic system according to claim 1-4, which is characterized in that the number of workpiece positioning branch (20) Amount is two, two workpiece positioning branch (20) be connected in parallel on the main in-line (10) and the main oil return line (11) it Between;The first oil cylinder (21) on one of them described workpiece positioning branch (20) is workpiece turgor cylinder (21 '), wherein another institute Stating the first oil cylinder (21) in workpiece positioning branch (20) is workpiece compressed oil cylinder (21 ").
6. hydraulic system according to claim 1, which is characterized in that the quantity of the work branch (30) be it is a plurality of, it is more Work branch described in item (30) is connected in parallel between the main in-line (10) and the main oil return line (11);One of them described work Second oil cylinder (31) for making branch (30) is turntable oil cylinder (32 "), wherein described the of another work branch (30) Two oil cylinders (31) are workbench advance and retreat oil cylinder (31 ').
7. horizontal broaching machine, the tensioner including workbench and for protruding into inner hole of workpiece, which is characterized in that the horizontal broaching machine Hydraulic system including horizontal broaching machine described in any one of claims 1-6, at least 1 first oil cylinder (21) are risen with described Fixed drive connection is to drive tensioner tensioner or unclamp workpiece;At least 1 second oil cylinder (31) and the workbench drive Connection is to drive workbench to move forward or back.
8. horizontal broaching machine according to claim 7, which is characterized in that the horizontal broaching machine includes for being pressed against workpiece one The compressing member at end, the quantity of workpiece positioning branch (20) are two, and two work positioning branch circuit parallel connections are in the master Between in-line (10) and the main oil return line (11), the first oil cylinder (21) of one of them described workpiece positioning branch (20) with The tensioner is drivingly connected, wherein the first oil cylinder (21) and the compressing member of another workpiece positioning branch (20) drive Connection.
9. horizontal broaching machine according to claim 7, which is characterized in that the quantity of the work branch (30) be it is a plurality of, it is more Work branch described in item (30) is connected in parallel between the main in-line (10) and the main oil return line (11);The horizontal broaching machine is also Including turntable, wherein second oil cylinder (31) of a work branch (30) is turntable oil cylinder (32 "), the turntable oil cylinder (32 ") and the turntable are drivingly connected to drive the turntable to rotate.
CN201811357225.7A 2018-11-15 2018-11-15 Horizontal broaching machine and its hydraulic system Pending CN109268327A (en)

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CN201811357225.7A CN109268327A (en) 2018-11-15 2018-11-15 Horizontal broaching machine and its hydraulic system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109954922A (en) * 2019-02-20 2019-07-02 荣基工业科技(江苏)有限公司 A kind of continous way external broaching machine and processing method
CN111026020A (en) * 2019-12-18 2020-04-17 长沙思胜智能设备有限公司 Special machine tool control system for end face teeth

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2153667Y (en) * 1992-07-20 1994-01-19 杨晓红 Hydraulic system for boaching machine
CN202317711U (en) * 2011-11-02 2012-07-11 圣邦有限公司 Clamping system of clamping apparatus
CN203176024U (en) * 2013-03-09 2013-09-04 山东永平再生资源有限公司 Shearing machine hydraulic control system
CN105240328A (en) * 2015-09-25 2016-01-13 徐州重型机械有限公司 Pressure maintaining system, pressure maintaining method and impact test method
CN105618844A (en) * 2016-01-27 2016-06-01 长沙市南方机床有限公司 High-speed broaching machine hydraulic control system
CN205533483U (en) * 2016-01-27 2016-08-31 长沙市南方机床有限公司 Broaching machine hydraulic control system
CN105947551A (en) * 2016-05-31 2016-09-21 山东科技大学 Hydraulic control system for automatic tensioning and automatic locking of tail of scraper conveyor and application of hydraulic control system
CN206299623U (en) * 2016-12-12 2017-07-04 江西泓锐机械工业制造有限公司 The fluid pressure drive device of aluminium alloy wheel hub drilling machine
CN106975792A (en) * 2017-05-26 2017-07-25 晋江市安海联诚机械有限公司 Broaching fixture and its handling method and horizontal broaching machine for end-tooth workpiece

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2153667Y (en) * 1992-07-20 1994-01-19 杨晓红 Hydraulic system for boaching machine
CN202317711U (en) * 2011-11-02 2012-07-11 圣邦有限公司 Clamping system of clamping apparatus
CN203176024U (en) * 2013-03-09 2013-09-04 山东永平再生资源有限公司 Shearing machine hydraulic control system
CN105240328A (en) * 2015-09-25 2016-01-13 徐州重型机械有限公司 Pressure maintaining system, pressure maintaining method and impact test method
CN105618844A (en) * 2016-01-27 2016-06-01 长沙市南方机床有限公司 High-speed broaching machine hydraulic control system
CN205533483U (en) * 2016-01-27 2016-08-31 长沙市南方机床有限公司 Broaching machine hydraulic control system
CN105947551A (en) * 2016-05-31 2016-09-21 山东科技大学 Hydraulic control system for automatic tensioning and automatic locking of tail of scraper conveyor and application of hydraulic control system
CN206299623U (en) * 2016-12-12 2017-07-04 江西泓锐机械工业制造有限公司 The fluid pressure drive device of aluminium alloy wheel hub drilling machine
CN106975792A (en) * 2017-05-26 2017-07-25 晋江市安海联诚机械有限公司 Broaching fixture and its handling method and horizontal broaching machine for end-tooth workpiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109954922A (en) * 2019-02-20 2019-07-02 荣基工业科技(江苏)有限公司 A kind of continous way external broaching machine and processing method
CN111026020A (en) * 2019-12-18 2020-04-17 长沙思胜智能设备有限公司 Special machine tool control system for end face teeth

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