CN106493989B

CN106493989B - Press machine

Info

Publication number: CN106493989B
Application number: CN201510564042.2A
Authority: CN
Inventors: 丁乃祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-07
Filing date: 2015-09-07
Publication date: 2018-05-29
Anticipated expiration: 2035-09-07
Also published as: CN106493989A

Abstract

The present invention relates to a kind of press machines, belong to machinery field, including driving gear and driven gear, driving gear is connected by transmission device with machine shaft, driven gear is fixed on bent axle, driving gear with driven gear by engaging passing power, the working face of the gear teeth on driving gear is arc-shaped, arc-shaped groove is set on driven gear, groove is snuggly mated to together with the inner surface of groove during gear teeth meshing and the outer surface of the gear teeth, the gear teeth are arc surface, it is engaged between gear by arc surface, the gear teeth are contacted in engagement process by cambered surface, gear teeth each several part uniform force, it prevents from beating tooth.

Description

Press machine

Technical field

The present invention relates to a kind of press machines, belong to machinery field.

Background technology

Press machine is exactly a punching type forcing press.In national product, Sheet Metal Forming Technology than tradition machinery due to processing It has said and has saved material and the energy, it is efficient, it is of less demanding to operator's technology and can make machinery by various mold applications Be unable to reach these advantages of product of processing, thus its purposes is more and more extensive.

The design principle of press machine is that circular motion is converted to linear motion, and main motor shaft is driven by transmission device Driving gear, driving gear are mounted on by clutch on bent axle with flywheel engaged transmission, flywheel, installing connecting rods on bent axle, even Boom end sets sliding block, flywheel driving crank rotation, and bent axle drives punch to move in a straight line.Flywheel dimension is larger, so general logical It crosses and casts, cast iron intensity difference itself, simultaneously because the difference of casting technique, each gear-tooth strength is also different.It is working normally Under the conditions of, during gear teeth stand under load, tooth root is under the action of alternating load, along with the abrupt change of cross-section of tooth root transition portion and processing knife Stress concentration caused by trace etc. acts on, and after the gear teeth repeat stand under load, fatigue crack will be generated at tooth root, finally makes the gear teeth tired It fractures.When the gear teeth are subject to overload suddenly, it is possible that the gear teeth are snapped or cut.In addition, transverse tooth thickness mistake after wheel odontotripsis When dividing thinned, break of gear tooth can also occur in normal conditions.

Quickly, impact force is very big, typically now the setting-up eccentricity on bent axle for the punch downstream rate of punching machine when punching machine works Brake wheel slows down, while is also used for ensureing the normal of clutch, but brake wheel is easy to wear, after abrasion eccentric wheel and brake block it Between gap increase, reduce braking effect.

The content of the invention

According to the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to：A kind of press machine, the gear teeth are provided For arc surface, engaged between gear by arc surface, the gear teeth are contacted in engagement process by cambered surface, and gear teeth each several part stress is equal It is even, it prevents from beating tooth.

Press machine of the present invention, including driving gear and driven gear, driving gear passes through transmission device and motor Shaft connects, and driven gear is fixed on bent axle, and driving gear with driven gear by engaging passing power, on driving gear The working face of the gear teeth is arc-shaped, and arc-shaped groove, the inner surface of groove and groove during gear teeth meshing are set on driven gear It is snuggly mated to together with the outer surface of the gear teeth.

Operation principle and process：

During work, groove is snuggly mated to together with the inner surface of groove during gear teeth meshing and the outer surface of the gear teeth, driven Gear and driving gear are engaged by arc-shaped plane from beginning to end, compared with now cogged line contact more Uniformly, broken teeth probability is substantially reduced.

Strap is distinguished in driving gear both sides, installs cylindrical roll by bolt between clamping plate, Boards wall is in driving tooth On wheel, driven gear is engaged with the arc surface of cylindrical roll, and cylindrical roll is rotatable in engagement process, is become sliding friction and is rubbed to roll It wipes, substantially reduces abrasion.

Reinforcing bar is embedded with along Impact direction in rack, similar to reinforced concrete structure, since rack build is larger, generally It is to be cast by the pig iron, due to the influence of casting technique, the stress of rack each several part is inconsistent, the supporting part in punching press Stress is larger, rack easy fracture, and reinforcing bar can improve the intensity of rack at this time, and rack is prevented to be broken.

Rebar surface sets protrusion, and protrusion can increase the frictional force between reinforcing bar and rack, prevent between reinforcing bar and rack It relatively moves.

In frame top through a screw rod, screw rod lower hinge is covered in connecting rod bearing shell, and screw rod upper and lower ends are combined with Nut sets row spring, sets uplink spring between the nut and rack of lower section, work as deflection of crankshaft between the nut and rack of top When position is rotated up, uplink spring is pressurized, and prevents that connecting rod uplink is too fast, makes clutch normal, when deflection of crankshaft position turns downwards When dynamic, downlink spring is pressurized, and prevents that connecting rod downlink is too fast, damages punch and mold, while ensures the safety of operating personnel.

The possessed compared with prior art advantageous effect of the present invention is：

Press machine of the present invention, driven gear and driving gear are nibbled by arc-shaped plane from beginning to end It closes, substantially reduces broken teeth probability, rack is interior to be embedded with steel along Impact direction compared with now cogged line contact evenly Muscle, similar to reinforced concrete structure, reinforcing bar can improve the intensity of rack, and rack is prevented to be broken, and substantially prolong making for punching machine With the service life, maintenance time and cost are saved.

Description of the drawings

Fig. 1 is schematic diagram of the embodiment of the present invention；

Fig. 2 is embodiment illustrated in fig. 1 part A partial enlarged view；

Fig. 3 is embodiment illustrated in fig. 1 part B partial enlarged view；

Fig. 4 is the part A partial enlarged view that embodiment illustrated in fig. 1 carries cylindrical roll；

Fig. 5 is the sectional view of embodiment illustrated in fig. 1 driving gear；

Fig. 6 is buffer unit schematic diagram.

In figure：1st, rack；2nd, driving gear；3rd, driven gear；4th, the gear teeth；5th, groove；6th, it is raised；7th, reinforcing bar；8th, cylinder Roller；9th, nut；10th, bolt；11st, clamping plate；12nd, nut；13rd, screw rod；14th, downlink spring；15 uplink springs；16 bent axles；17th, even Bar FE Tiler；18th, connecting rod.

Specific embodiment

The embodiment of the present invention is described further below in conjunction with the accompanying drawings：

As Figure 1-Figure 5, press machine of the present invention, including driving gear 2 and driven gear 3, driving gear 2 is logical It crosses transmission device to be connected with machine shaft, driven gear 3 is fixed on bent axle, and driving gear 2 is passed by engaging with driven gear 3 Graduating power, the working face of the gear teeth 4 on driving gear 2 is arc-shaped, and arc-shaped groove 5, groove 5 are set on driven gear 3 The inner surface of groove 5 and the outer surface of the gear teeth 4 are snuggly mated to together when being engaged with the gear teeth 4.

Operation principle and process：

During work, the inner surface of groove 5 and the outer surface of the gear teeth 4 are snuggly mated to together when groove 5 is engaged with the gear teeth 4, Driven gear 3 and driving gear 2 are engaged by arc-shaped plane from beginning to end, are contacted compared with now cogged line Stress evenly, substantially reduces broken teeth probability.

Strap 11 is distinguished in 2 both sides of driving gear, passes through the installation cylindrical roll 8 of bolt 10, driven gear 3 between clamping plate 11 It is engaged with the arc surface of cylindrical roll 8, cylindrical roll 8 is rotatable in engagement process, and change sliding friction greatly reduces into rolling friction Abrasion.

Reinforcing bar 7 is embedded with along Impact direction in rack 1, similar to 7 concrete structure of reinforcing bar, since 1 build of rack is larger, Cast generally by the pig iron, due to the influence of casting technique, the stress of 1 each several part of rack is inconsistent, in punching press by Power is larger, 1 easy fracture of rack, and reinforcing bar 7 can improve the intensity of rack 1 at this time, and rack 1 is prevented to be broken, simultaneously because reinforcing bar fusing point Higher than the casting temperature of cast iron, reinforcing bar will not be melted when being cast or change reinforcing bar self attributes.

Reinforcing bar 7 is high strength cast iron.

7 surface of reinforcing bar sets protrusion 6, and protrusion 6 can increase the frictional force between reinforcing bar 7 and rack 1, prevent reinforcing bar 7 and machine It is relatively moved between frame 1.

In frame top through a screw rod 13, for screw rod lower hinge on connecting rod FE Tiler 17,13 upper and lower ends of screw rod are equal Nut 12 is combined with, row spring 14 is set between the nut 12 of top and rack 1, is set between the nut 12 of lower section and rack 1 Row spring 15, when 16 bending position of bent axle is rotated up, uplink spring 15 is pressurized, and prevents that 18 uplink of connecting rod is too fast, makes clutch Normally, when 16 bending position of bent axle rotates down, downlink spring 14 is pressurized, and prevents that 18 downlink of connecting rod is too fast, damage punch and Mold, while ensure the safety of operating personnel.

Improvement of the present invention to gear and rack 1 can be applied not only on press machine, every to apply gear And the mechanical structure of casting iron framework 1 can apply this improvement, the size and number of reinforcing bar 7 can change according to force environment.

Claims

1. a kind of press machine, including driving gear (2) and driven gear (3), driving gear (2) is turned by transmission device and motor Axis connection, driven gear (3) are fixed on bent axle, and driving gear (2) is special by engaging passing power with driven gear (3) Sign is：The working face of the gear teeth (4) on driving gear (2) is arc-shaped, and driven gear sets arc-shaped groove on (3) (5), the inner surface of groove (5) and the outer surface of the gear teeth (4) are snuggly mated to together when groove (5) is engaged with the gear teeth (4), actively Strap (11) is distinguished in gear (2) both sides, and passing through bolt (10) between clamping plate (11) installs cylindrical roll (8), driven gear (3) It is engaged with the arc surface of cylindrical roll (8), rotatably, change sliding friction is rolling friction to cylindrical roll (8), significantly in engagement process Abrasion is reduced, rack (1) is interior to be embedded with reinforcing bar (7) along Impact direction, and reinforcing bar (7) can improve the intensity of rack (1), prevent machine Frame (1) is broken, simultaneously because reinforcing bar fusing point is higher than the casting temperature of cast iron, reinforcing bar will not be melted when being cast or changes steel Muscle self attributes, reinforcing bar (7) are high strength cast iron, and reinforcing bar (7) surface is set raised (6), raised (6) can increase reinforcing bar (7) with Frictional force between rack (1) prevents from relatively moving between reinforcing bar (7) and rack (1), and a spiral shell is passed through in frame top Bar (13), for screw rod lower hinge on connecting rod FE Tiler (17), screw rod (13) upper and lower ends are combined with nut (12), the spiral shell of top Row spring (14) is set between female (12) and rack (1), uplink spring (15) is set between the nut (12) of lower section and rack (1), When bent axle (16) bending position is rotated up, uplink spring (15) is pressurized, and prevents that connecting rod (18) uplink is too fast, makes clutch just Often, when bent axle (16) bending position rotates down, downlink spring (14) is pressurized, and prevents that connecting rod (18) downlink is too fast, damage punching Head and mold, while ensure the safety of operating personnel.