CN200970655Y - Horizontal broaching machine - Google Patents
Horizontal broaching machine Download PDFInfo
- Publication number
- CN200970655Y CN200970655Y CN 200620011602 CN200620011602U CN200970655Y CN 200970655 Y CN200970655 Y CN 200970655Y CN 200620011602 CN200620011602 CN 200620011602 CN 200620011602 U CN200620011602 U CN 200620011602U CN 200970655 Y CN200970655 Y CN 200970655Y
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- valve
- fluid
- hydraulic cylinder
- valve body
- port
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Abstract
This utility model discloses a horizontal broaching machine, and a differential valve is provided between a hydraulic cylinder and a reversal valve; when the high-pressure oil is injected to a rod-less cavity of the hydraulic cylinder, the moving speed of hydraulic cylinder piston can be increased by twice, which shortens the reset time of broaching and enhances the working efficiency of broaching machine. On the other hand, this utility model adopts a manual reversal valve and provides a mechanical type operating device between the manual reversal valve and a sliding seat; when the sliding seat moves to relevant position, the operating device can drive the valve stem of manual reversal valve to move, so as to implement automatic reverse of the hydraulic cylinder. Compared with the reversing device which consists of an electromagnetic reversal valve and a travel switch, this utility model is provided with advantages of reliable use, convenient regulation, simple structure and low cost.
Description
Technical field
The utility model relates to the broaching machine technical field, relates in particular to a kind of horizontal broaching machine.
Background technology
For horizontal broaching machine, broaching tool is fixed together by the piston rod of a chuck and hydraulic cylinder, and under the control of hydraulic system, piston rod when retraction realized the broaching operation, and piston rod is realized the broaching tool return when stretching out.Since broaching tool and piston rod tension during retraction, good rigidity, not yielding, thereby can guarantee the precision of workpiece, and broaching tool is an idle stroke when stretching out, and is not subjected to cutting force, thereby avoided broaching tool and piston rod in the easy unstability of pressured state, and produce deflection deformation, influence the problem of machining accuracy.From the angle of increasing work efficiency, the return time of broaching tool should be short more good more, but in known technology, broaching tool is when return, the rodless cavity of hydraulic cylinder is a high pressure chest, rod chamber is a low-pressure cavity, broaching tool is when broaching, and the rod chamber of hydraulic cylinder is a high pressure chest, and rodless cavity is a low-pressure cavity, because amass the long-pending effective cross section that is greater than rod chamber, the effective cross section of rodless cavity, so under same flow rate conditions, the return speed of broaching tool is less than the cutting feed speed of broaching tool, in other words, the broaching time of the return time ratio broaching tool of broaching tool also will be grown, and this situation greatly reduces the operating efficiency of broaching machine.
On the other hand, known horizontal broaching machine, the automatic reverse of its broaching tool generally is by hydraulicdirectional control valve rod chamber or rodless cavity that hydraulic oil feeds hydraulic cylinder respectively to be realized.Hydraulicdirectional control valve uses solenoid directional control valve usually, and the travel switch of control electromagnetic switch valve events is set on the bed body or near switch, realizes automatic control.Because the operating frequency of broaching machine is very high, causes solenoid directional control valve frequently to commutate, corresponding electronic component damages easily; And, when workpiece not simultaneously, needed broaching stroke difference, the installation site of travel switch just needs to adjust, and travel switch is directly fixed on the body, is not easy to adjust.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of horizontal broaching machine is provided, and long to solve the broaching tool return time, the problem of reduction broaching machine operating efficiency.
For solving the problems of the technologies described above, the technical solution of the utility model is: horizontal broaching machine, comprise the hydraulic cylinder that is installed on a body, with the reversal valve that is installed on a body, with the chuck that the piston rod and the broaching tool of hydraulic cylinder can be fixed together, with the slide that can slide along the guide rail of bed body, described chuck is fixedlyed connected with described slide, it comprises that also one is arranged between described hydraulic cylinder and the reversal valve, and at the differential valve that can improve the movement velocity of hydraulic cylinder piston when the rodless cavity of hydraulic cylinder feeds hydraulic oil, described differential valve is fixedly connected on the rodless cavity end of the cylinder body of described hydraulic cylinder.
Differential valve can be realized by following concrete structure:
Described differential valve comprises that inside is provided with the valve body of piston chamber, in the described piston chamber sliding spool is installed, described valve body is provided with the first hydraulic control mouth and the second hydraulic control mouth that can be connected with two fluid-through ports of reversal valve respectively, with first fluid-through port that can be connected, with second fluid-through port that can be connected with the rodless cavity of hydraulic cylinder with the rod chamber of hydraulic cylinder; Described sliding spool is provided with the first not connected stream and second stream; Described sliding spool has two operating positions in piston chamber, be respectively that the first hydraulic control mouth of valve body, first stream by sliding spool is communicated with, simultaneously the second hydraulic control mouth of valve body is passed through first operating position that second stream of sliding spool is communicated with second fluid-through port of valve body and the second hydraulic control mouth of valve body directly is communicated with, simultaneously the second hydraulic control mouth of valve body is passed through second operating position that second stream of sliding spool is communicated with first fluid-through port of valve body with second fluid-through port of valve body with first fluid-through port of valve body.
As a kind of improvement, described reversal valve is a hand-operated direction valve; It also comprises and is arranged at the manipulation device that the valve rod that can drive hand-operated direction valve between described hand-operated direction valve and the described slide, when slide moves to the relevant position moves.
Described manipulation device can be realized by following concrete mode: it comprises the control stick that is connected with the valve rod of described hand-operated direction valve and is fixed in collision block and two stopping means that are fixed in described control stick and lay respectively at described collision block both sides of described slide.
As a kind of improvement, described collision block is sheathed on described control stick.
As further improvement, described each stopping means comprises cover shape part that can be sheathed on described control stick and the tightening device that described cover shape part can be anchored on described control stick.
Improve as another kind, described manipulation device also comprises the control crank hinged with described control stick, and described control crank and described bed body are hinged.
After having adopted technique scheme, the beneficial effects of the utility model are: owing to be provided with a rodless cavity end differential valve that is fixedly connected on the cylinder body of described hydraulic cylinder between described hydraulic cylinder and the reversal valve, the valve body of described differential valve is provided with the first hydraulic control mouth and the second hydraulic control mouth that can be connected with two fluid-through ports of reversal valve respectively, with first fluid-through port that can be connected, with second fluid-through port that can be connected with the rodless cavity of hydraulic cylinder with the rod chamber of hydraulic cylinder; Described sliding spool is provided with the first not connected stream and second stream; Described sliding spool has two operating positions in piston chamber, so by reversal valve when the first hydraulic control mouth injects hydraulic oil, sliding spool slides to first operating position under the effect of oil pressure, this moment, the first hydraulic control mouth was communicated with first fluid-through port by first stream of sliding spool, the second hydraulic control mouth is communicated with second fluid-through port by second stream of sliding spool, hydraulic oil enters rod chamber from first fluid-through port, and the low pressure oil in the rodless cavity flows to reversal valve and then flows back to hydraulic oil container from second fluid-through port.When by reversal valve when the second hydraulic control mouth injects hydraulic oil, sliding spool slides to second operating position under the effect of oil pressure, this moment, the second hydraulic control mouth directly was communicated with second fluid-through port, the second hydraulic control mouth is communicated with first fluid-through port by second stream of sliding spool, hydraulic oil enters the rodless cavity of hydraulic cylinder from second fluid-through port, enter the rod chamber of hydraulic cylinder simultaneously by first fluid-through port, because long-pending effective cross section greater than rod chamber, the effective cross section of rodless cavity is long-pending, so hydraulic cylinder piston moves to the rod chamber direction, and the hydraulic oil that flows out from rod chamber can not flow back to reversal valve, but be sent to rodless cavity together, under the situation of the flow that does not change hydraulic pump, the translational speed of hydraulic cylinder piston is improved more than the twice, thereby shorten the return time of broaching tool greatly, improve the operating efficiency of broaching machine.
Because described reversal valve is a hand-operated direction valve; It also comprises and being arranged between described hand-operated direction valve and the described slide, the manipulation device that the valve rod of drive hand-operated direction valve moves when slide moves to the relevant position, described manipulation device comprises the control stick that is connected with the valve rod of described hand-operated direction valve, with the collision block that is fixed in described slide, with two stopping means that are fixed in described control stick and lay respectively at described collision block both sides, when the collision block that is fixed in slide is met any one stopping means, control stick all will produce under the drive of slide and move, so technique scheme is to have realized the automatic reverse of hydraulic cylinder by a kind of pure mechanical mode, it uses reliable, simple in structure, and with low cost.Collision block is sheathed on described control stick, and its effect is that control stick is played certain supporting role, guarantees the reliability of operator acts.Because described each stopping means comprises the cover shape part that can be sheathed on the described control stick, with the tightening device that described cover shape part can be anchored on described control stick, so stopping means can carry out the position adjustment easily stating on the control stick, to adapt to the needs of different commutation positions.Because described manipulation device also comprises the control crank hinged with described control stick, described control crank and described bed body are hinged, like this, in case of emergency, can realize the manual control of reversal valve by control crank, for the user provides convenient more.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 be embodiment illustrated in fig. 1 in the cutaway view of sliding spool differential valve when being in first operating position;
Fig. 3 be embodiment illustrated in fig. 1 in the cutaway view of sliding spool differential valve when being in second operating position;
Fig. 4 is the stereogram of differential valve valve body among the utility model embodiment.
The specific embodiment
A kind of horizontal broaching machine, as shown in Figure 1, hydraulic cylinder 101 and hand-operated direction valve 401 all are installed on a body 201, and the piston rod and the broaching tool of hydraulic cylinder 101 are fixed together by chuck, and chuck is fixedlyed connected with the slide 301 that can slide along the guide rail of bed body 201.Described differential valve 601 is fixedly connected on the rodless cavity end of the cylinder body of described hydraulic cylinder 101.
Between the valve rod of slide 301 and hand-operated direction valve 401, be provided with manipulation device, concrete structure is as follows: control stick 501 is connected with the valve rod of hand-operated direction valve 401, and hinged in its another end and control crank 504, control crank 504 is hinged at a suitable position with described bed body 201.Control stick 501 is preferably hinged with hand-operated direction valve 401, and the valve rod that can guarantee hand-operated direction valve 401 like this can be because of not being subjected to the moment of flexure effect of additional force, and destroy the dependability of reversal valve.Collision block 503 is fixed in described slide 301 and is sheathed on described control stick 501, in the both sides of described collision block 503, is respectively equipped with a stopping means that is fixed in described control stick 501, and these two stopping means are in order to determine the commutation position of hand-operated direction valve valve rod.Described each stopping means comprises the cover shape part 502 that can be sheathed on described control stick and described cover shape part can be anchored on the tightening device 505 of described control stick, and described tightening device 505 is made of holding screw.
The valve rod that this manipulation device will drive hand-operated direction valve 401 when slide 301 moves to the relevant position moves, thereby realizes the automatic reverse of hydraulic cylinder.It is a kind of Purely mechanical structure, compares with the reversing arrangement that solenoid directional control valve and travel switch are formed, and it has uses reliably advantage easy to adjust, simple in structure, with low cost.
Fig. 2, Fig. 3 and Fig. 4 show the concrete structure of differential valve 601.The inside of valve body 1 is provided with piston chamber, and sliding spool 5 is installed in the described piston chamber.Described valve body 1 is provided with the first hydraulic control mouth 11 and the second hydraulic control mouth, 12, the first fluid-through ports 13 and second fluid-through port 14.The first hydraulic control mouth gland 3 is fixed in the first hydraulic control mouth 11, it can be connected with a fluid-through port of reversal valve, the second hydraulic control mouth gland 4 is fixed in the second hydraulic control mouth 12, it can be connected with another fluid-through port of reversal valve, the first fluid-through port gland 2 is fixed in first fluid-through port 13, and be connected with the rod chamber of hydraulic cylinder, second fluid-through port 14 directly is connected with the rodless cavity of hydraulic cylinder.The first hydraulic control mouth 11 and the second hydraulic control mouth 12 of described valve body have same axis with piston chamber respectively, the resistance that such straight-through structure helps reducing hydraulic oil when flowing through the joint portion of hydraulic control mouth and piston chamber.Described sliding spool 5 is provided with the first not connected stream 51 and second stream 52, and first stream 51 and second stream 52 of described sliding spool are respectively the square fluid course, and it can be connected by an axial blind hole and a radial direction through hole and realize.The piston chamber of described valve body is provided with first cannelure 16 and second cannelure 17, first fluid-through port 13 of described valve body is communicated with piston chamber at first cannelure, 16 places, and second fluid-through port 14 of described valve body is communicated with piston chamber at second cannelure, 17 places by intercommunicating pore 15.Such structure, even sliding spool 5 rotates in piston chamber, the connection effect that also can not hinder first stream 51 and second stream 52 to be play.
Described sliding spool 5 has two operating positions in piston chamber, be respectively as shown in Figure 1 first operating position and second operating position as shown in Figure 2, sliding spool 5 mobile injected hydraulic oils to the first hydraulic control mouth 11 or the second hydraulic control mouth 12 respectively by reversal valve and realizes.When sliding spool 5 was in first operating position, the first hydraulic control mouth 11 of valve body was communicated with second fluid-through port 14 of valve body by second stream 52 that first stream 51 of sliding spool is communicated with first fluid-through port 13 of valve body, the second hydraulic control mouth 12 of while valve body passes through sliding spool.When sliding spool 5 was in second operating position, the second hydraulic control mouth 12 of valve body directly was communicated with second fluid-through port 14 of valve body, the second hydraulic control mouth 14 of while valve body is communicated with first fluid-through port 13 of valve body by second stream 52 of sliding spool.
When reversal valve injects hydraulic oil to the first hydraulic control mouth 11, sliding spool 5 slides to first operating position under the effect of oil pressure, this moment, hydraulic oil flowed out the rod chamber that enters hydraulic cylinder from first fluid-through port 13, low pressure oil in the rodless cavity of hydraulic cylinder flows into from second fluid-through port 14, second stream 52 and the second hydraulic control mouth 12 through sliding spool flow to reversal valve, and then flow back to hydraulic oil container.When reversal valve injects hydraulic oil to the second hydraulic control mouth 12, sliding spool 5 slides to second operating position under the effect of oil pressure, this moment, hydraulic oil entered the rodless cavity of hydraulic cylinder from second fluid-through port 14, and also enter the rod chamber of hydraulic cylinder simultaneously by first fluid-through port 13, because amass the long-pending effective cross section that is greater than rod chamber, the effective cross section of rodless cavity, so hydraulic cylinder piston moves to the rod chamber direction, and the hydraulic oil that flows out from rod chamber can not flow back to reversal valve, but be sent to the rodless cavity of hydraulic cylinder together, under the situation of the flow that does not change hydraulic pump, the translational speed of hydraulic cylinder piston is improved more than the twice, thereby shortened the return time of broaching tool greatly, improved the operating efficiency of broaching machine.
Claims (10)
1, horizontal broaching machine, comprise the hydraulic cylinder (101) that is installed on a body (201), with the reversal valve that is installed on a body (201), with the chuck that the piston rod and the broaching tool of hydraulic cylinder can be fixed together, with the slide (301) that can slide along the guide rail of bed body (201), described chuck is fixedlyed connected with described slide (301), it is characterized in that: it comprises that also one is arranged between described hydraulic cylinder and the reversal valve, and at the differential valve (601) that can improve the movement velocity of hydraulic cylinder piston when the rodless cavity of hydraulic cylinder feeds hydraulic oil, described differential valve (601) is fixedly connected on the rodless cavity end of the cylinder body of described hydraulic cylinder (101).
2, horizontal broaching machine as claimed in claim 1, it is characterized in that: described differential valve (601) comprises that inside is provided with the valve body of piston chamber (1), sliding spool (5) is installed in the described piston chamber, described valve body (1) is provided with the first hydraulic control mouth (11) and the second hydraulic control mouth (12) that can be connected with two fluid-through ports of reversal valve respectively, with first fluid-through port (13) that can be connected, with second fluid-through port (14) that can be connected with the rodless cavity of hydraulic cylinder with the rod chamber of hydraulic cylinder; Described sliding spool (5) is provided with not connected first stream (51) and second stream (52); Described sliding spool (5) has two operating positions in piston chamber, be respectively that the first hydraulic control mouth (11) of valve body, first stream (51) by sliding spool is communicated with first fluid-through port (13) of valve body, first operating position that the second hydraulic control mouth (12) of valve body, second stream (52) by sliding spool is communicated with second fluid-through port (14) of valve body and the second hydraulic control mouth (12) of valve body directly is communicated with second fluid-through port (14) of valve body simultaneously, second operating position that the second hydraulic control mouth (14) of valve body, second stream (52) by sliding spool is communicated with first fluid-through port (13) of valve body simultaneously.
3, horizontal broaching machine as claimed in claim 2, it is characterized in that: the first hydraulic control mouth (11) and the second hydraulic control mouth (12) of described valve body have same axis with piston chamber respectively, and first stream (51) and second stream (52) of described sliding spool are respectively the square fluid course.
4, horizontal broaching machine as claimed in claim 3, it is characterized in that: the piston chamber of described valve body is provided with first cannelure (16) and second cannelure (17), first fluid-through port (13) of described valve body is located to be communicated with piston chamber at first cannelure (16), and second fluid-through port (14) of described valve body is located to be communicated with piston chamber at second cannelure (17).
5, as described any horizontal broaching machine of claim 1 to 4, it is characterized in that: described reversal valve is hand-operated direction valve (401); It also comprises and is arranged between described hand-operated direction valve (401) and the described slide (301), can drives the manipulation device that the valve rod of hand-operated direction valve moves when moving to the relevant position when slide (301).
6, horizontal broaching machine as claimed in claim 5, it is characterized in that: described manipulation device comprises the control stick (501) that is connected with the valve rod of described hand-operated direction valve, with the collision block that is fixed in described slide (503) and two stopping means that are fixed in described control stick and lay respectively at described collision block both sides.
7, horizontal broaching machine as claimed in claim 6 is characterized in that: described collision block (503) is sheathed on described control stick (501).
8, horizontal broaching machine as claimed in claim 7 is characterized in that: described each stopping means comprises cover shape part (502) that can be sheathed on described control stick and the tightening device (505) that described cover shape part can be anchored on described control stick.
9, horizontal broaching machine as claimed in claim 8 is characterized in that: described manipulation device also comprises the control crank hinged with described control stick (504), and described control crank (504) is hinged with described bed body (201).
10, horizontal broaching machine as claimed in claim 9 is characterized in that: described control stick (501) is hinged with the valve rod of described hand-operated direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620011602 CN200970655Y (en) | 2006-11-17 | 2006-11-17 | Horizontal broaching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620011602 CN200970655Y (en) | 2006-11-17 | 2006-11-17 | Horizontal broaching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200970655Y true CN200970655Y (en) | 2007-11-07 |
Family
ID=38881914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620011602 Expired - Lifetime CN200970655Y (en) | 2006-11-17 | 2006-11-17 | Horizontal broaching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200970655Y (en) |
-
2006
- 2006-11-17 CN CN 200620011602 patent/CN200970655Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090729 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |