CN214868935U - Vertical machining center hydraulic clamp for machining gasoline engine cylinder body - Google Patents
Vertical machining center hydraulic clamp for machining gasoline engine cylinder body Download PDFInfo
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- CN214868935U CN214868935U CN202121053821.3U CN202121053821U CN214868935U CN 214868935 U CN214868935 U CN 214868935U CN 202121053821 U CN202121053821 U CN 202121053821U CN 214868935 U CN214868935 U CN 214868935U
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Abstract
A vertical machining center hydraulic clamp for machining a gasoline engine cylinder body comprises a base, wherein a roller way, a pre-positioning mechanism, a lifting mechanism, a clearance eliminating mechanism, an auxiliary clamping mechanism and a pressing mechanism are arranged on the base; the roller way is arranged on the lifting mechanism, two positioning pins are arranged on the base, the pre-positioning mechanism is arranged at the rear part of the roller way, the gap eliminating mechanism is arranged on two adjacent side surfaces of the base, and the auxiliary holding mechanism is oppositely arranged on the base. The gasoline engine cylinder body is placed on a roller way and pushed to a pre-positioning mechanism, then the gasoline engine cylinder body is driven by a lifting mechanism to fall onto a base, a pin hole in a workpiece falls into a positioning pin on the base, the gasoline engine cylinder body is pushed against the workpiece by a gap eliminating mechanism until a gap between the gasoline engine cylinder body and the positioning pin is zero, a bottom supporting cylinder and two side auxiliary clamping mechanisms support and clamp the workpiece, and finally a pressing mechanism presses the workpiece to complete clamping and positioning. The utility model discloses a work piece provides quick accurate location and effectively compresses tightly, and whole journey does not need artifical the participation, improves production efficiency and yield, guarantees the processingquality of work piece.
Description
Technical Field
The utility model relates to a be used for engine cylinder block class mechanical workpiece location clamping, realize the accurate hydraulically operated fixture of once only processing, belong to accurate metal processing field.
Background
The gasoline engine cylinder body shown in figure 1 needs an automatic (hydraulic) positioning and clamping device no matter the traveling frame mechanical arm, the knuckle arm robot or the manual feeding and discharging in the automatic production line processing process.
When a workpiece is loaded, errors such as incomplete positioning and ineffective compression can occur in manual clamping, so that the displacement machining precision of the workpiece is lost; and the potential safety hazard can be caused by manual operation in the machine tool for a long time; the time for replacing the parts is long, and the efficiency is low.
The vertical machining center is mainly used for roughly machining the large surface 2 of the cylinder opening and each hole on the cylinder opening of the gasoline engine cylinder body 1, the opposite surface of the cylinder opening 1 is provided with a large opening 3, and the large opening 3 faces downwards during machining. The cylinder opening machining area is large, the tool consumption is also large, when the existing truss automatic production line is used for machining and clamping gasoline engine cylinder body workpieces, clamping deformation and machining deformation can be caused to the gasoline engine cylinder body, after the gasoline engine cylinder body is clamped and machined on the production line, each pressing device is loosened, errors in size and position can be caused, the gasoline engine cylinder body is beyond the design tolerance range, the gasoline engine cylinder body is unqualified to be scrapped, materials and working hours are wasted, and production delay is caused.
Disclosure of Invention
The utility model discloses to the not enough of current truss automation line gasoline engine cylinder body class work piece holder technique existence, provide a vertical machining center hydraulically operated fixture for gasoline engine cylinder body processing that can pinpoint, avoid clamping processing to warp.
The utility model is used for vertical machining center hydraulically operated fixture of gasoline engine cylinder body processing adopts following technical scheme:
the clamp comprises a base, wherein a roller way, a pre-positioning mechanism, a lifting mechanism, a gap eliminating mechanism, an auxiliary holding mechanism and a pressing mechanism are arranged on the base; the roller way is arranged on the lifting mechanism, two positioning pins are arranged on the base, the pre-positioning mechanism is arranged at the rear part of the roller way, the gap eliminating mechanism is arranged on two adjacent side surfaces of the base, and the auxiliary holding mechanism is oppositely arranged on the base.
And guide plates fixed on the base are arranged on two sides of the roller way, so that the workpiece can be guided in the moving process.
And the base is provided with a supporting cylinder which plays a role in supporting the bottom of the workpiece in an auxiliary manner.
The two positioning pins are a front positioning pin and a rear positioning pin, and the positions of the front positioning pin and the rear positioning pin are consistent with the positions of the two pin holes in the workpiece, so that the workpiece is positioned.
The pre-positioning mechanism is a screw rod, and the position of the front end of the screw rod is adjusted to enable the pin hole on the workpiece conveyed to the pre-positioning mechanism along the roller way to be approximately coaxial with the positioning pin.
The lifting mechanism comprises a tray, a lifting hydraulic cylinder and a guide rod, the tray is connected with a piston cylinder of the lifting hydraulic cylinder, the guide rod is arranged on the tray, and the guide rod extends into a guide hole in the base. After the pin holes in the workpiece are basically coaxial with the positioning pins, the lifting hydraulic cylinder drives the tray to descend onto the base, and the pin holes in the workpiece fall into the positioning pins.
The clearance eliminating mechanism adopts a single-action linear pushing cylinder and is used for pushing the workpiece forwards to a zero clearance with the positioning pin, so that the absolute processing precision is ensured.
The auxiliary holding mechanism adopts an auxiliary holding support cylinder and is arranged on the base through an auxiliary holding seat. The clamp is used for tightly holding and supporting the left side surface and the right side surface of a workpiece, so that the workpiece is not deformed when being stressed during machining, and the clamp is prevented from deforming the workpiece.
The pressing mechanisms are arranged at four positions of the base, lever hydraulic cylinders are adopted, and piston rods of the lever hydraulic cylinders are connected with the pressing arms through levers. After the workpiece is positioned and is assisted to be embraced by the auxiliary embracing mechanism, the lever hydraulic cylinder is started, and the pressing arm is driven by the lever to tightly press the workpiece.
When the clamp works, the gasoline engine cylinder body is placed on the roller way and pushed to the pre-positioning mechanism, the lifting mechanism drives the roller way and a workpiece on the roller way to fall onto the base, a pin hole in the workpiece falls into a positioning pin on the base, the workpiece is pushed to a zero clearance with the positioning pin through the clearance eliminating mechanism, the bottom supporting cylinder and the two side auxiliary holding mechanisms support and hold the workpiece tightly, and finally the pressing mechanism presses the workpiece tightly to complete clamping and positioning.
The utility model discloses a hydraulically operated fixture, the material characteristic and the shape characteristic of fully having considered car gasoline engine cylinder body have done abundant analysis to the material deformation that anchor clamps clamping and machine tool machining probably brought, for the work piece provides quick accurate location and effectively compresses tightly, whole journey does not need artifical the participation, improves production efficiency and yield, reduces the incident. The clamp is suitable for the production line of gasoline engine cylinder bodies for the automobiles in batch production, and can be used for providing effective and accurate positioning and pressing for workpiece processing and ensuring the processing quality of the workpieces.
Drawings
Fig. 1 is a schematic structural diagram of a gasoline engine cylinder.
Fig. 2 is the utility model discloses a vertical machining center hydraulically operated fixture's for gasoline engine cylinder body processing structural schematic.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic structural diagram of the middle lifting mechanism of the present invention.
Fig. 5 is a schematic structural diagram of the middle pressing mechanism of the present invention.
In the figure: 1. the device comprises a gasoline engine cylinder body, 2 cylinder opening large faces, 3 large openings, 4 roller ways, 5 a base, 6 a pre-positioning mechanism, 7 a clearance eliminating mechanism, 8 a lifting mechanism, 9 an auxiliary holding mechanism, 10 an auxiliary holding supporting cylinder, 11 a guide plate, 12 a bottom supporting cylinder, 13 a front positioning pin, 14 a rear positioning pin, 15 a pressing mechanism, 16 an adjusting screw rod, 17 a cushion block, 18 a single-action linear pushing cylinder, 19 a single-action linear pushing cylinder, 20 a guide rod, 21 a linear lifting hydraulic cylinder, 22 a tray, 23 a lever hydraulic cylinder, 24 a lever and 25 a pressing arm.
Detailed Description
The utility model discloses a hydraulically operated fixture is used for carrying out rough machining to the jar mouth big face 2 of gasoline engine cylinder body 1 and each spot facing work on it on vertical processing center, and the structure of gasoline engine cylinder body refers to figure 1.
As shown in fig. 2 and 3, the utility model discloses a vertical machining center hydraulic fixture for gasoline engine cylinder body processing, including base 5, be provided with two rollgang 4 (see fig. 3), prepositioning mechanism 6, elevating system 8, anti-backlash mechanism 7 on the base 5, assist and embrace mechanism 9 and hold-down mechanism 15. The roller way 4 is arranged on the lifting mechanism 8 and rises and falls along with the lifting mechanism 8.
The roller table 4 is in the prior art, enables the workpiece to roll according to a certain direction, and mainly comprises a guide plate and a plurality of roller shafts, wherein two ends of each roller shaft are arranged on a base through needle roller bearings, and the guide plates 11 are fixedly arranged on the bases 5 at two sides of each roller shaft, so that the workpiece (the gasoline engine cylinder body 1) plays a role in guiding in the moving process. Two front and rear bottom support cylinders 12 are arranged on the base 5 between the two rows of roller ways 4, a front positioning pin 13 and a rear positioning pin 14 are arranged on the base 5, the rear positioning pin 14 is arranged at the rear part between the two rows of roller ways 4, and the positions of the front positioning pin 13 and the rear positioning pin 14 are consistent with the positions of the two pin holes on the workpiece, so that the workpiece positioning is realized.
The pre-positioning mechanism 6 is arranged at the rear part of the roller way 4, can be arranged on the base 1 or the guide plate 11 of the roller way 4 by adopting an adjusting screw rod 16 (see figure 3), adjusts the position of the adjusting screw rod 16 according to the appearance of a workpiece and locks the adjusting screw rod, so that the pin hole of the workpiece conveyed to the rear part along the roller way 4 is approximately coaxial with the front positioning pin 13 and the rear positioning pin 14.
Four lifting mechanisms 8 are arranged between two rows of roller tables 4 (see fig. 1), the structure of each lifting mechanism is shown in fig. 4, each lifting mechanism 8 is composed of a tray 22, a linear lifting hydraulic cylinder 21 and guide rods 20, each lifting mechanism 8 is connected with a piston cylinder of the linear lifting hydraulic cylinder 21 through the tray 22, two guide rods 20 are arranged on the tray 22, and the guide rods 20 extend into guide holes in the base 5. After the pin holes on the workpiece are basically coaxial with the front positioning pin 13 and the rear positioning pin 14, the linear lifting hydraulic cylinder 21 drives the tray 22 to descend to the cushion blocks 17 distributed on the base 1 and used for supporting the workpiece, and the pin holes on the workpiece fall into the front positioning pin 13 and the rear positioning pin 14. While the workpiece is supported by the two bottom support cylinders 12.
The anti-backlash mechanisms 7 are arranged on the rear side and the right side of the base 5 and respectively adopt a single-acting linear pushing cylinder 18 and a single-acting linear pushing cylinder 19, and referring to fig. 3, the single-acting linear pushing cylinder 18 is arranged on the base 5 and is positioned at the rear part between the two rows of roller ways 4 and is used for pushing the workpiece forwards. A single-acting linear thrust cylinder 19 is provided on the right side of the base 5 for pushing the workpiece leftward. After the workpiece falls into the positioning pin, microscopic gaps are formed between the pin hole and the positioning pin, so that the machining precision of the workpiece is influenced, and the workpiece is pushed to be in zero gap with the positioning pin by the gap eliminating mechanism, so that the absolute machining precision is ensured.
The auxiliary holding mechanism 9 is arranged on the base 1 and positioned outside the two rows of roller ways 4 and used for holding and supporting the left side and the right side of the workpiece. The auxiliary holding support cylinder 10 is adopted and is arranged on the base 1 through an auxiliary holding seat. The support cylinder is a hydraulic cylinder that lifts the piston rod to the surface of the workpiece and self-locks in the case of pressure-on. The auxiliary holding mechanism 9 can effectively hold the upper part of the workpiece without pressing and shaking, so that the workpiece is not deformed under stress during processing, and the fixture is prevented from deforming the workpiece, thereby ensuring the processing quality of the workpiece.
As shown in fig. 5, the pressing mechanism 15 is provided at four positions at the pad 17, and a lever hydraulic cylinder 23 is used, and a piston rod of the lever hydraulic cylinder 23 is connected to a pressing arm 25 through a lever 24. After the workpiece is positioned by the positioning pin, the auxiliary holding mechanism 9 is firstly used for auxiliary holding, then the lever hydraulic cylinder 23 is started, the lever 24 is used for driving the pressing arm 25 to tightly press the workpiece, so that the workpiece cannot be displaced during processing, and the path of the workpiece sliding out along the roller way 4 after the workpiece is processed can be avoided when the lever falls down.
When the clamp works, firstly, a gasoline engine cylinder body is placed on the roller way 4 by a manipulator or manually and pushed against the front end of an adjusting screw 16 of the pre-positioning mechanism 6, then the roller way 4 and a workpiece 5 on the roller way fall onto a cushion block 17 under the driving of a linear lifting hydraulic cylinder 21 in the lifting mechanism 8, pin holes on the workpiece fall into a front positioning pin 13 and a rear positioning pin 14, and then the workpiece is pushed against to a zero clearance through a single-action linear pushing cylinder 18 and a single-action linear pushing cylinder 19 in the clearance eliminating mechanism 7. The bottom supporting cylinder 12 and the auxiliary holding supporting cylinders 10 in the two-side auxiliary holding mechanism 9 support and hold the workpiece tightly. And finally, the lever hydraulic cylinders 23 in the four pressing mechanisms 15 press the workpiece to finish clamping and positioning.
Claims (9)
1. The utility model provides a vertical machining center hydraulically operated fixture for gasoline engine cylinder body processing which characterized by: the device comprises a base, wherein a roller way, a pre-positioning mechanism, a lifting mechanism, a clearance eliminating mechanism, an auxiliary holding mechanism and a pressing mechanism are arranged on the base; the roller way is arranged on the lifting mechanism, two positioning pins are arranged on the base, the pre-positioning mechanism is arranged at the rear part of the roller way, the gap eliminating mechanism is arranged on two adjacent side surfaces of the base, and the auxiliary holding mechanism is oppositely arranged on the base.
2. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: and guide plates fixed on the base are arranged on two sides of the roller way.
3. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the base is provided with a supporting cylinder.
4. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the two positioning pins are a front positioning pin and a rear positioning pin, and the positions of the front positioning pin and the rear positioning pin are consistent with the positions of the two pin holes in the workpiece.
5. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the pre-positioning mechanism is a screw.
6. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the lifting mechanism comprises a tray, a lifting hydraulic cylinder and a guide rod, the tray is connected with a piston cylinder of the lifting hydraulic cylinder, the guide rod is arranged on the tray, and the guide rod extends into a guide hole in the base.
7. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the anti-backlash mechanism adopts a single-acting linear push cylinder.
8. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the auxiliary holding mechanism adopts an auxiliary holding support cylinder and is arranged on the base through an auxiliary holding seat.
9. The vertical machining center hydraulic clamp for machining the gasoline engine cylinder body as claimed in claim 1, wherein: the pressing mechanisms are arranged at four positions of the base, lever hydraulic cylinders are adopted, and piston rods of the lever hydraulic cylinders are connected with the pressing arms through levers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053821.3U CN214868935U (en) | 2021-05-17 | 2021-05-17 | Vertical machining center hydraulic clamp for machining gasoline engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053821.3U CN214868935U (en) | 2021-05-17 | 2021-05-17 | Vertical machining center hydraulic clamp for machining gasoline engine cylinder body |
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| Publication Number | Publication Date |
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| CN214868935U true CN214868935U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121053821.3U Active CN214868935U (en) | 2021-05-17 | 2021-05-17 | Vertical machining center hydraulic clamp for machining gasoline engine cylinder body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952349A (en) * | 2022-07-28 | 2022-08-30 | 潍坊思博精工科技有限公司 | Clamping tool for hydraulic valve body machining and hydraulic valve body finish machining device |
-
2021
- 2021-05-17 CN CN202121053821.3U patent/CN214868935U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952349A (en) * | 2022-07-28 | 2022-08-30 | 潍坊思博精工科技有限公司 | Clamping tool for hydraulic valve body machining and hydraulic valve body finish machining device |
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