CN210099528U - Automatic clamping mechanism of movable beam gantry machining center - Google Patents
Automatic clamping mechanism of movable beam gantry machining center Download PDFInfo
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- CN210099528U CN210099528U CN201920593899.0U CN201920593899U CN210099528U CN 210099528 U CN210099528 U CN 210099528U CN 201920593899 U CN201920593899 U CN 201920593899U CN 210099528 U CN210099528 U CN 210099528U
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- cylinder liner
- machining center
- clamping mechanism
- piston rod
- automatic clamping
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Abstract
The utility model provides a moving beam longmen machining center's automatic clamping mechanism, include the cylinder liner and install the fixed plate at both ends about the cylinder liner, the fixed plate passes through the support column and is connected with the cylinder liner with first kicking block, install the piston rod in the cylinder liner, the piston rod is close to one side of cylinder liner terminal surface and installs first sealing washer, with install the second sealing washer in the cylinder liner that first sealing washer is relative, be provided with the oilhole in the cylinder liner between first sealing washer and the second sealing washer, the piston rod outside is around there being dish spring group, the piston rod end extends cylinder liner and first kicking block butt, with install the second kicking block in the cylinder liner of fixed plate one side below that first kicking block is relative, the second kicking block outside is around there being the spring, the one end that the cylinder liner terminal surface was kept away from to the second kicking block is. The automatic clamping mechanism is good in clamping effect, and the service lives of a servo motor, a lead screw and a bearing of a movable beam gantry machining center are prolonged.
Description
Technical Field
The utility model relates to an automatic clamping mechanism of moving beam longmen machining center.
Background
The gantry machining center is a machining center with a spindle axis perpendicular to the workbench and is mainly suitable for machining large parts. The existing moving beam type gantry machining center has the structural characteristics that a cross beam vertically moves up and down, but the moving beam needs to be fixed when parts are machined, the gravity generated by the moving beam is overcome by simply relying on a motor, a lead screw and an auxiliary oil cylinder, the motor, the lead screw, a bearing and the like are inevitably damaged, and the service life of the moving beam type gantry machining center is shortened. The existing movable beam type gantry machining center is not provided with a clamping device, so that the workpiece clamping effect is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a move roof beam longmen machining center's automatic clamping mechanism, press from both sides tightly effectually, prolonged the life of move roof beam longmen machining center's servo motor, lead screw and bearing.
The utility model discloses a realize like this, a moving beam longmen machining center's automatic clamping mechanism, include the cylinder liner and install the fixed plate at both ends about the cylinder liner, the fixed plate passes through the support column and is connected with the cylinder liner with first kicking block, install the piston rod in the cylinder liner, the piston rod is close to one side of cylinder liner terminal surface and installs first sealing washer, with install the second sealing washer in the relative cylinder liner of first sealing washer, be provided with the oilhole in the cylinder liner between first sealing washer and the second sealing washer, the piston rod outside is surrounded there is the dish spring group, the piston rod end extends cylinder liner and first kicking block butt, with install the second kicking block in the cylinder liner of the relative fixed plate one side below of first kicking block, second kicking block outside is encircleed there is the spring, the one end that the cylinder liner terminal surface was kept away from to the second.
Preferably, an air hole is formed in the cylinder sleeve corresponding to the middle of the piston rod.
Preferably, the clamping plate is fixedly connected with the second top block.
Preferably, the copper sheet is fixed on the surface of the clamping plate.
Preferably, a clamp body is arranged between the two copper sheets.
Preferably, the fixing plate is provided with four blocks.
Preferably, a positioning key is arranged in the middle of the rear side of the cylinder sleeve.
Preferably, the middle part of the cylinder sleeve is arranged in an inwards concave mode.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the dish spring group's that sets up production elasticity promotes the piston rod, transmit first kicking block again in proper order, the fixed plate, the second kicking block, splint and copper sheet, it is fixed to press from both sides splint and copper sheet clamp with the clamp, make the clamp to the clamp effectual, and the oilhole gets into hydraulic oil, the elasticity of dish spring group is overcome to the oil pressure, finally make clamp both sides splint of clamp and copper sheet break away from the clamp, whole clamping mechanism presss from both sides tightly and loosens efficiently, the servo motor at movable beam longmen machining center has been prolonged, the life of lead screw and bearing.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a three-dimensional structure diagram of an automatic clamping mechanism of a movable beam gantry machining center provided by the embodiment of the utility model;
FIG. 2 is a front view structure of an automatic clamping mechanism of a movable beam gantry machining center provided by the embodiment of the present invention;
FIG. 3 is a sectional view taken along A-A in FIG. 2;
FIG. 4 is a sectional view taken along the line B-B in FIG. 2;
fig. 5 is a top view structural diagram of an automatic clamping mechanism of a movable beam gantry machining center provided by the embodiment of the present invention;
fig. 6 is an installation structure diagram of an automatic clamping mechanism of a movable beam gantry machining center in the whole gantry machining center provided by the embodiment of the utility model.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The following description is made in detail with reference to fig. 1 to 5, and the embodiment provides an automatic clamping mechanism of a movable beam gantry machining center, which includes a cylinder sleeve 1 and fixing plates 7 installed at upper and lower ends of the cylinder sleeve 1, where the fixing plates 7 are connected with the cylinder sleeve 1 through supporting pillars 15 and first ejector blocks 6, and spaces are reserved in corresponding positions in the fixing plates 7 so that the supporting pillars and the first ejector blocks can be installed. A piston rod 3 is installed in the cylinder sleeve 1, and a space is reserved in the cylinder sleeve for installing the piston rod and the disc spring group. In use, the principle of clamping by the automatic clamping device is as follows: under the natural state, the piston rod is pushed by the elasticity of the disc spring group and then is sequentially transmitted to the first ejector block, the fixing plate, the second ejector block, the clamping plate and the copper sheet, and the clamping body is clamped and fixed by the clamping plates on the two sides and the copper sheet. One side that the piston rod 3 is close to 1 terminal surface of cylinder liner is installed first sealing washer 4, with install second sealing washer 5 in the cylinder liner 1 that first sealing washer 4 is relative, be provided with oilhole 14 in the cylinder liner 1 between first sealing washer 4 and the second sealing washer 5, when using, the principle that automatic clamping device unclamped: the electromagnetic valve of the gantry machining center controls oil inlet of the oil hole, oil pressure overcomes the elasticity of the disc spring group, and finally clamping plates on two sides of the clamp body and the copper sheet are separated from the clamp body. The outer side of the piston rod 3 is surrounded by a disc spring group 2, the tail end of the piston rod 3 extends out of a cylinder sleeve 1 to abut against a first ejector block 6, a second ejector block 8 is installed in the cylinder sleeve 1 below one side of a fixing plate 7 opposite to the first ejector block 6, a spring 9 is surrounded on the outer side of the second ejector block 8, and a clamping plate 10 and a copper sheet 11 are installed at one end, far away from the end face of the cylinder sleeve 1, of the second ejector block 8.
The air holes 12 are formed in the cylinder sleeve 1 corresponding to the middle of the piston rod 3, the piston rod moves under the sealing oil pressure at two ends, and the gap between the shaft and the inner cavity is small, so that the cavity of the tail end disc spring support rod is closed, and therefore the air holes are increased during design, the air pressure can be balanced, and the influence of the air pressure of the inner cavity on the oil pressure is avoided.
The clamping plate 10 is fixedly connected with the second top block 8. The copper sheets 11 are fixed on the surface of the clamping plate 10, and are fixedly connected by bolts.
And a clamp body 13 is arranged between the two copper sheets 11 and can clamp or loosen the clamp body.
The fixed plate 7 is provided with four blocks, and the clamp bodies are stressed evenly by the aid of the four blocks in the simultaneous operation.
And a positioning key 16 is arranged in the middle of the rear side of the cylinder sleeve 1 and is used as a part of an automatic clamping mechanism arranged in a gantry machining center.
The middle part of the cylinder sleeve 1 is arranged in an inwards concave mode and is provided with a space for clamping a clamp body.
Calculation of clamping force: when clamping, the piston rod 3 is subjected to the elastic force f11 of the disc spring group 2, the pushing force f21 of the second top block is transmitted, under the action condition of the supporting column 15, the lever principle is satisfied, and the sum of the moments of the second top block satisfies f11 × l1 ═ f21 × l 2. At the moment, the disc spring group elastic force f11 is k1 Δ s11, the spring stress f21 is k2 Δ s21, the clamping force f is f21, and f is equal to or more than umg,
the substitution calculation k1 Δ s1 Δ l1/l2 ≧ umg.
Wherein, f 11-disc spring force during clamping;
l 1-arm of disc spring to support point;
k 1-disc spring modulus of elasticity ratio;
Δ s 11-disc spring compression when clamped;
f 21-spring force at clamping;
l 2-arm of spring to support point;
k 2-spring modulus of elasticity ratio;
Δ s21 — amount of spring compression when clamped;
f-clamping force;
the friction coefficient between the u-clamp body and the copper sheet;
m-moving the beam and the accessory mass;
g-acceleration of gravity.
When the clamping mechanism is loosened, the electromagnetic valve controls oil inlet of the oil hole 14, the oil pressure is set to be p, and the acting force on the piston rod 3 is p x Π r2The elastic force of the disc spring group 2 is k1 Δ s12, and the resultant force is f21 ═ k1 Δ s12-p ═ Π r2The spring force is f22 ═ k2 ×. DELTA.s 22, and still satisfies the lever principle, so f12 ═ l1 ═ f22 ×. l2, and therefore the oil pressure is required to have enough force to overcomeWhen the disc spring force is applied, f12 l1 is not more than f22 l2, and the substitution calculation result shows that p is not less than (k1 Δ s12 l1-k2 Δ s22 l2)/l1 n r2。
Wherein, f 21-disc spring force when loosening;
l 1-arm of disc spring to support point;
k 1-disc spring modulus of elasticity ratio;
Δ s11 — disc spring compression at release;
f 21-spring force when released;
l 2-arm of spring to support point;
k 2-spring modulus of elasticity ratio;
Δ s21 — spring compression at release;
r-piston rod contact radius;
p-hydraulic oil pressure.
Regarding the design of the disc spring group 2, the deformation of the single disc of the disc spring group is ensured to be 25% h 0-75% h0, so that the maximum effect of the disc spring can be exerted, and the service life of the disc spring is prolonged.
The movable beam type gantry machining center is additionally provided with an automatic clamping mechanism for fixing the movable beam, the clamping mechanism is determined to achieve the purpose of expected design through field test comparison analysis, and the service lives of a servo motor, a lead screw, a bearing and the like are prolonged.
As shown in fig. 6, wherein 21-the movable beam, 22-the auxiliary balance cylinder, 23-the servo motor, 24-the upright, 25-the automatic clamping mechanism, 26-the fixed beam. When the gantry machining center is used for normal machining, the moving beam part and the two side upright posts are fixed through the two groups of automatic clamping mechanisms which are bilaterally symmetrical, when the moving beam needs to be subjected to stroke adjustment, the automatic clamping mechanisms are loosened, the moving beam is adjusted to a required position under the action of the servo motor, the lead screw and the auxiliary balance oil cylinder, and the moving beam is immediately clamped and fixed through signal feedback after the moving beam reaches the stroke position.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the dish spring group's that sets up production elasticity promotes the piston rod, transmit first kicking block again in proper order, the fixed plate, the second kicking block, splint and copper sheet, it is fixed to press from both sides splint and copper sheet clamp with the clamp, make the clamp to the clamp effectual, and the oilhole gets into hydraulic oil, the elasticity of dish spring group is overcome to the oil pressure, finally make clamp both sides splint of clamp and copper sheet break away from the clamp, whole clamping mechanism presss from both sides tightly and loosens efficiently, the servo motor at movable beam longmen machining center has been prolonged, the life of lead screw and bearing.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a moving beam longmen machining center's automatic clamping mechanism, includes cylinder liner (1) and installs fixed plate (7) at both ends about cylinder liner (1), its characterized in that, fixed plate (7) are connected with cylinder liner (1) through support column (15) and first kicking block (6), install piston rod (3) in cylinder liner (1), first sealing washer (4) are installed to one side that piston rod (3) are close to cylinder liner (1) terminal surface, with install second sealing washer (5) in the cylinder liner (1) that first sealing washer (4) are relative, be provided with oilhole (14) in cylinder liner (1) between first sealing washer (4) and second sealing washer (5), the piston rod (3) outside is encircleed and is had dish group spring (2), piston rod (3) end extends cylinder liner (1) and first kicking block (6) butt, with install first kicking block (6) in cylinder liner (1) of fixed plate (7) one side below that first kicking block (6) are relative The cylinder sleeve is characterized by comprising two ejector blocks (8), a spring (9) is arranged on the outer side of each second ejector block (8) in a surrounding mode, and a clamping plate (10) and a copper sheet (11) are installed at one end, far away from the end face of the cylinder sleeve (1), of each second ejector block (8).
2. The automatic clamping mechanism of a movable beam gantry machining center according to claim 1, characterized in that an air hole (12) is arranged in a cylinder sleeve (1) corresponding to the middle of the piston rod (3).
3. The automatic clamping mechanism of a movable beam gantry machining center according to claim 1, wherein the clamping plate (10) is fixedly connected with the second top block (8).
4. The automatic clamping mechanism of a movable beam gantry machining center according to claim 1, wherein the copper sheet (11) is fixed on the surface of the clamping plate (10).
5. The automatic clamping mechanism of a movable beam gantry machining center according to claim 4, wherein a clamp body (13) is arranged between the two copper sheets (11).
6. The automatic clamping mechanism of a movable beam gantry machining center according to claim 1, wherein four fixed plates (7) are provided.
7. The automatic clamping mechanism of a movable beam gantry machining center according to claim 1, characterized in that a positioning key (16) is installed in the middle of the rear side of the cylinder sleeve (1).
8. The automatic clamping mechanism of the movable beam gantry machining center according to claim 1, wherein the middle part of the cylinder sleeve (1) is arranged in an inward concave manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593899.0U CN210099528U (en) | 2019-04-26 | 2019-04-26 | Automatic clamping mechanism of movable beam gantry machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593899.0U CN210099528U (en) | 2019-04-26 | 2019-04-26 | Automatic clamping mechanism of movable beam gantry machining center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210099528U true CN210099528U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920593899.0U Active CN210099528U (en) | 2019-04-26 | 2019-04-26 | Automatic clamping mechanism of movable beam gantry machining center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210099528U (en) |
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2019
- 2019-04-26 CN CN201920593899.0U patent/CN210099528U/en active Active
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