CN214443112U - Center frame structure of horizontal numerical control lathe - Google Patents
Center frame structure of horizontal numerical control lathe Download PDFInfo
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- CN214443112U CN214443112U CN202121815811.9U CN202121815811U CN214443112U CN 214443112 U CN214443112 U CN 214443112U CN 202121815811 U CN202121815811 U CN 202121815811U CN 214443112 U CN214443112 U CN 214443112U
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Abstract
The utility model relates to a horizontal numerical control lathe's centre frame structure belongs to numerical control machine tool fixture's technical field. The structure is as follows: a crankshaft positioning hole with an upward opening is formed in the center of the central frame body; the lower half part of the central frame body is provided with a lower fixed supporting device for supporting the crankshaft, and the upper half part is provided with a clamping pressure plate for clamping the crankshaft; the outer end of the clamping pressure plate is connected with a driving oil cylinder, and a piston of the driving oil cylinder is connected with a displacement rod; switch supports are respectively arranged on two sides of the central frame body, a contactless switch is connected to the switch supports, a protective cover is arranged outside the switch supports, a long hole is formed in the protective cover, a limiting rod connected to the end of the displacement rod is inserted into the long hole of the protective cover, and the moving position of the limiting rod corresponds to the position of the contactless switch. This centre frame structure adopts the lower part to set up two backup pads, and two clamp plate of upper portion installation, and the material loading opening up not only provides the space for the manipulator unloading, and the backup pad plays with clamp plate simultaneously moreover, has guaranteed the positioning accuracy of part.
Description
Technical Field
The utility model relates to a horizontal numerical control lathe's centre frame structure belongs to numerical control machine tool fixture's technical field.
Background
At present, most of center frames on horizontal numerical control lathes for machining crankshaft heads adopt manual clamping structures, and the individual hydraulic clamping structures need to be purchased outside the whole center frame, so that the cost is high, and the center frames which are purchased outside or manually clamped basically adopt three-point clamping. With the development of numerical control technology and the increasing requirements of people on the improvement of the performance and the reduction of the manufacturing cost of the machine tool, a plurality of crankshaft machining enterprises build automatic crankshaft machining lines, and the truss mechanical arm is adopted to carry out feeding and discharging to require the machine tool to complete automatic positioning machining. Under this condition, the center frame of the original three-point clamping structure has not satisfied the configuration of the automatic line. Therefore, a center frame structure of the horizontal numerical control lathe is developed to meet the requirements of modern production.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a horizontal numerical control lathe's centre frame structure, this centre frame structure adopt the lower part to set up two backup pads, and two clamp plate of upper portion installation, and the material loading opening up not only provides the space for the manipulator unloading, and backup pad and clamp plate act on simultaneously moreover, have guaranteed the positioning accuracy of part.
For solving the above problems, the specific technical scheme of the utility model is as follows: a center frame structure of a horizontal numerical control lathe is characterized in that a crankshaft positioning hole with an upward opening is formed in the center of a center frame body; the lower half part of the central frame body is provided with a lower fixed supporting device which extends into the crankshaft positioning hole to support the bottom of the crankshaft to be processed; upper sliding chutes are symmetrically arranged on the upper half part of the central frame body, clamping pressure plates are in sliding fit in the upper sliding chutes, and one ends of the clamping pressure plates extend out of the upper sliding chutes to be pressed with the upper half surface of the crankshaft to be processed in a tangent mode; the other end of the clamping pressure plate is in threaded connection with a piston rod of an oil cylinder body, and the oil cylinder body is positioned at the side end of the central frame body; the top of the displacement rod penetrates through a cover plate at the top of the oil cylinder body; switch supports are respectively arranged on two sides of the central frame body, a contactless switch is connected to the switch supports, a protective cover is arranged outside the switch supports, a long hole is formed in the protective cover, a limiting rod connected to the end of the displacement rod is inserted into the long hole of the protective cover, and the moving position of the limiting rod corresponds to the position of the contactless switch.
The lower fixed supporting device structurally comprises a central frame body, a crankshaft positioning hole, a lower fixed supporting device and a supporting device, wherein the lower half part of the central frame body is provided with two bilaterally symmetrical lower sliding grooves, the inner ends of the lower sliding grooves are communicated with the crankshaft positioning hole, the outer end parts of the lower sliding grooves are provided with threaded holes, the inner end surfaces of the threaded holes are used for positioning locking nuts, and jacking screws penetrate through the threaded holes and are positioned on the lower sliding grooves through the locking nuts; the supporting plate is connected in the lower sliding groove in a sliding mode, one end of the supporting plate is supported on the inner end face of the jacking screw, and the other end of the supporting plate obliquely extends upwards out of the lower sliding groove and is in contact with the outer circumference of the crankshaft to be machined.
The surface of the upper sliding groove is provided with an oil guide groove, the top of the central frame body is symmetrically provided with lubricating oil holes, and the bottoms of the lubricating oil holes are communicated with the oil guide groove.
The bottom of the central frame body is provided with a blowing pipeline, the blowing pipeline is connected with a blowing pipe through a pipe joint, and an air source outlet of the blowing pipe is positioned right below the crankshaft to be processed.
And cold water pipelines are respectively arranged on two sides of the central frame body, the tail ends of the cold water pipelines are connected with cooling water pipes through pipe joints, and cooling water outlets of the cooling water pipes are positioned on two sides of the crankshaft to be processed.
The end face of the clamping pressure plate is provided with an alloy block, and the outer surface of the alloy block is positioned in the tangential direction of the outer circumference of the crankshaft to be processed.
An upper cover plate is arranged on the outer side face of the upper sliding groove and connected with the central frame body.
The end face of the supporting plate is provided with an alloy block, and the outer surface of the alloy block is located in the tangential direction of the outer circumference of the crankshaft to be machined.
The lateral surface of lower spout is equipped with down the apron, and lower apron is connected with central support body.
This horizontal numerical control lathe's centre frame structure beneficial effect does:
1. the lower part of the central frame body is provided with two supporting plates, the upper part of the central frame body is provided with a structure of two clamping pressing plates, and a feeding opening is upward, so that the feeding and discharging of a manipulator are facilitated;
2. the two clamping pressure plates on the upper part of the central frame body are driven by hydraulic pressure and can be linked with an operating system of the horizontal numerically controlled lathe to realize automatic clamping;
3. the central frame body is provided with the lubricating oil hole, the cooling water hole and the air blowing hole, so that the lubricating oil hole has a lubricating effect on a moving part, has a cooling effect on a processed crankshaft, can clean scrap iron remained on the supporting plate after processing, and is high in reliability;
4. the whole structure adopts self-made processing pieces, the manufacturing cost is low, and the cost performance is high.
Drawings
FIG. 1 is a schematic view of the overall structure of a center frame of a horizontal numerically controlled lathe.
FIG. 2 is a sectional view of the center frame structure of the horizontal numerically controlled lathe.
Fig. 3 is a schematic structural view of the center frame body.
FIG. 4 is a diagram showing the use state of the center frame structure of the horizontal numerically controlled lathe.
Detailed Description
As shown in fig. 1 to 3, a center frame structure of a horizontal numerically controlled lathe is provided with a crankshaft positioning hole 17 with an upward opening at the center of a center frame body 1; a lower fixed supporting device is arranged at the lower half part of the central frame body 1 and extends into the crankshaft positioning hole 17 to support the bottom of the crankshaft 16 to be processed; upper chutes 1-1 are symmetrically arranged on the upper half part of the central frame body 1, a clamping pressure plate 5 is in sliding fit with the upper chutes 1-1, one end of the clamping pressure plate 5 extends out of the upper chutes 1-1, an alloy block is arranged on the end surface of the clamping pressure plate 5, and the outer surface of the alloy block is pressed with the upper half surface of the crankshaft 16 to be processed in a tangent manner; in order to prevent scrap iron from entering the upper chute 1-1 during processing, an upper cover plate 24 is arranged on the outer side surface of the upper chute 1-1, and the upper cover plate 24 is connected with the central frame body 1.
A piston rod 7 of an oil cylinder body 6 is connected with a threaded hole at the other end of the clamping pressure plate 5, and the oil cylinder body 6 is positioned at the side end of the central frame body 1; the piston rod 7 is connected with a displacement rod 9 in the opposite direction, and the top of the displacement rod 9 penetrates through a cover plate 8 at the top of the oil cylinder body 6; the two sides of the central frame body 1 are respectively provided with a switch support 11, the switch supports are connected with a contactless switch 10, a protective cover 23 is arranged outside the switch support 11 to prevent iron filings from splashing to an induction area of the contactless switch during processing, a long hole is arranged on the protective cover 23, a limiting rod connected with the end of the displacement rod 9 is inserted into the long hole of the protective cover 23, and the moving position corresponds to the position of the contactless switch 10 to realize that the clamping pressure plate is opened and closed to two limit positions and is braked in time.
The lower fixed supporting device structurally comprises a central frame body 1, two lower sliding chutes 1-2 which are bilaterally symmetrical are arranged on the lower half part of the central frame body 1, the inner ends of the lower sliding chutes 1-2 are communicated with a crankshaft positioning hole 17, the outer end parts of the lower sliding chutes 1-2 are provided with threaded holes, locking nuts 4 are positioned on the inner end surfaces of the threaded holes, and tightening screws 3 penetrate through the threaded holes and are positioned on the lower sliding chutes 1-2 through the locking nuts 4; a supporting plate 2 is connected in the lower chute 1-2 in a sliding way, one end of the supporting plate 2 is supported on the inner end face of the tightening screw 3, the other end of the supporting plate 2 extends out of the lower chute 1-2 in an inclined way, an alloy block is arranged on the end face of the supporting plate 2, and the outer surface of the alloy block is tangent to the outer circumference of the crankshaft 16 to be processed and plays a supporting role. The outer side surface of the lower chute 1-2 is provided with a lower cover plate 22, and the lower cover plate 22 is connected with the central frame body 1.
In order to ensure the lubricating, cooling and drying processes in the crankshaft machining process and after the crankshaft machining process, an oil guide groove 1-3 is formed in the surface of an upper chute 1-1, lubricating oil holes 13 are symmetrically formed in the top of a central frame body 1, and the bottoms of the lubricating oil holes 13 are communicated with the oil guide groove 1-3; the bottom of the central frame body 1 is provided with an air blowing pipeline, the air blowing pipeline is connected with an air blowing pipe 15 through a pipe joint, and an air source outlet of the air blowing pipe 15 is positioned right below a crankshaft 16 to be processed. Two sides of the central frame body 1 are respectively provided with a cold water pipeline, the tail end of the cold water pipeline is connected with a cooling water pipe 14 through a pipe joint, and cooling water outlets of the cooling water pipe 14 are positioned at two sides of a crankshaft 16 to be processed.
The working principle of the center frame structure of the horizontal numerical control lathe is as follows:
before processing, the jacking screw 3 is adjusted, the position of the supporting plate 2 is adjusted according to the size of a main journal of a crankshaft 16 to be processed, and the jacking screw 3 is locked by a locking nut 4. The upper clamping platen 5 is now in a retracted state. The robot on the automated line loads and places the crankshaft 16 on the support plate 2, as shown in fig. 4. After the crankshaft is completely positioned by a tool rest and an axial positioning device on the machine tool, a hydraulic system of the machine tool drives a clamping pressure plate 5 to advance to clamp the crankshaft 16, and after a signal is given by a non-contact switch 10, a machining program can be entered for machining. During machining, a cooling system of the machine tool sprays cooling liquid to a crankshaft 16 through a cooling water pipe 14 on the center frame body 1 for the purpose of cooling. After the machining is finished, a hydraulic system of the machine tool drives the clamping pressure plate 5 to return, and when the contactless switch 10 sends a return in-place signal, a mechanical arm on an automatic line takes away the crankshaft to finish the blanking. Meanwhile, a lubricating system of the machine tool lubricates the clamping pressure plate 5 through a lubricating oil hole 13 in the center frame body 1, and a pneumatic system of the machine tool completes a processing cycle after scrap iron cleaning is carried out on the supporting surface of the supporting plate 2 through an air blowing pipe 15 in the center frame body 1.
Claims (9)
1. The utility model provides a horizontal numerical control lathe's centre frame structure which characterized in that: a crankshaft positioning hole (17) with an upward opening is formed in the center of the central frame body (1); a lower fixed supporting device is arranged at the lower half part of the central frame body (1), and extends into the crankshaft positioning hole (17) to support the bottom of the crankshaft (16) to be processed; the upper sliding chutes (1-1) are symmetrically arranged at the upper half part of the central frame body (1), the upper sliding chutes (1-1) are in sliding fit with the clamping pressure plate (5), and one end of the clamping pressure plate (5) extends out of the upper sliding chutes (1-1) and is tangentially pressed with the upper half surface of the crankshaft (16) to be processed; the other end of the clamping pressure plate (5) is in threaded connection with a piston rod (7) of an oil cylinder body (6), and the oil cylinder body (6) is positioned at the side end of the central frame body (1); the piston rod (7) is connected with a displacement rod (9) in the opposite direction, and the top of the displacement rod (9) penetrates through a cover plate (8) at the top of the oil cylinder body (6); switch supports (11) are respectively arranged on two sides of the central frame body (1), the switch supports are connected with the non-contact switches (10), a protective cover (23) is arranged outside the switch supports (11), a long hole is formed in the protective cover (23), a limiting rod connected with the end of the displacement rod (9) is inserted into the long hole of the protective cover (23), and the moving position corresponds to the position of the non-contact switches (10).
2. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: the lower fixing and supporting device structurally comprises two lower sliding chutes (1-2) which are bilaterally symmetrical, wherein the lower half part of a central frame body (1) is provided with the two lower sliding chutes (1-2), the inner ends of the lower sliding chutes (1-2) are communicated with a crankshaft positioning hole (17), the outer ends of the lower sliding chutes (1-2) are provided with threaded holes, locking nuts (4) are positioned on the inner end surfaces of the threaded holes, and jacking screws (3) penetrate through the threaded holes and are positioned on the lower sliding chutes (1-2) through the locking nuts (4); the lower chute (1-2) is connected with a support plate (2) in a sliding way, one end of the support plate (2) is supported on the inner end face of the tightening screw (3), and the other end of the support plate (2) obliquely extends upwards out of the lower chute (1-2) and is contacted with the outer circumference of the crankshaft (16) to be processed.
3. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: the surface of the upper chute (1-1) is provided with oil guide grooves (1-3), the top of the central frame body (1) is symmetrically provided with lubricating oil holes (13), and the bottoms of the lubricating oil holes (13) are communicated with the oil guide grooves (1-3).
4. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: the bottom of the central frame body (1) is provided with a blowing pipeline, the blowing pipeline is connected with a blowing pipe (15) through a pipe joint, and an air source outlet of the blowing pipe (15) is located right below a crankshaft (16) to be processed.
5. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: two sides of the central frame body (1) are respectively provided with a cold water pipeline, the tail end of the cold water pipeline is connected with a cooling water pipe (14) through a pipe joint, and cooling water outlets of the cooling water pipe (14) are positioned at two sides of a crankshaft (16) to be processed.
6. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: and the end surface of the clamping pressure plate (5) is provided with an alloy block, and the outer surface of the alloy block is positioned in the tangential direction of the outer circumference of the crankshaft (16) to be processed.
7. The center frame structure of a horizontal numerically controlled lathe according to claim 1, wherein: an upper cover plate (24) is arranged on the outer side surface of the upper sliding chute (1-1), and the upper cover plate (24) is connected with the central frame body (1).
8. The center frame structure of a horizontal numerically controlled lathe according to claim 2, wherein: the end face of the supporting plate (2) is provided with an alloy block, and the outer surface of the alloy block is positioned in the tangential direction of the outer circumference of the crankshaft (16) to be processed.
9. The center frame structure of a horizontal numerically controlled lathe according to claim 2, wherein: the outer side surface of the lower sliding chute (1-2) is provided with a lower cover plate (22), and the lower cover plate (22) is connected with the central frame body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121815811.9U CN214443112U (en) | 2021-08-05 | 2021-08-05 | Center frame structure of horizontal numerical control lathe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121815811.9U CN214443112U (en) | 2021-08-05 | 2021-08-05 | Center frame structure of horizontal numerical control lathe |
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| CN214443112U true CN214443112U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116276168A (en) * | 2023-03-03 | 2023-06-23 | 潍坊胜利石化机械有限公司 | Positioning device for machining large-sized crankshaft horizontal machine tool |
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2021
- 2021-08-05 CN CN202121815811.9U patent/CN214443112U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116276168A (en) * | 2023-03-03 | 2023-06-23 | 潍坊胜利石化机械有限公司 | Positioning device for machining large-sized crankshaft horizontal machine tool |
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