CN216227931U - Numerical control double-end inner circle turning and grinding combined machine tool - Google Patents
Numerical control double-end inner circle turning and grinding combined machine tool Download PDFInfo
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- CN216227931U CN216227931U CN202122871056.2U CN202122871056U CN216227931U CN 216227931 U CN216227931 U CN 216227931U CN 202122871056 U CN202122871056 U CN 202122871056U CN 216227931 U CN216227931 U CN 216227931U
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Abstract
The utility model relates to the technical field of machine tools, in particular to a numerical control double-head inner circle turning and grinding combined machine tool, which can respectively process an inner hole, a central hole and end surfaces at two sides of a workpiece under numerical control by a first inner circle grinding mechanism and a second inner circle grinding mechanism which are respectively arranged at two ends of the workpiece on one hand, so that the cost of the device is saved; on the other hand, the inner hole, the central hole and the end face of the workpiece can be machined by clamping once without clamping the workpiece for the second time, and the concentricity of the inner hole of the workpiece is ensured, so that the machining precision of the workpiece is improved, a foundation is provided for the accurate grinding of the outer circle of the subsequent workpiece and the centering of the central hole, and the coaxiality of the inner circle and the outer circle of the workpiece can be effectively ensured.
Description
Technical Field
The utility model relates to the technical field of machine tools, in particular to a numerical control double-head inner circle turning and grinding combined machine tool.
Background
The machine tool is a machine tool for grinding the surface of a workpiece by using a turning tool and a grinding tool. Most machine tools perform grinding using a grinding wheel rotating at high speed, and a few machine tools perform grinding using a free abrasive and other grindstones such as oilstone and abrasive belt.
In the prior art, a method for machining a deep-hole shaft-shaped part basically adopts an alignment mode to position and clamp a workpiece, and a single grinding head grinds the workpiece. Due to the adoption of the processing mode of clamping in a grading way, the concentricity of the two ends of the deep hole and the coaxiality of the inner circle and the outer circle cannot be guaranteed, the requirement on the operating skill of an operator is higher, the labor intensity is high, the processing efficiency is also very low, and the requirement on enterprise production cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
the utility model provides a numerical control double-head inner circle turning and grinding combined machine tool which comprises a horizontally arranged machine tool body, wherein a first inner circle sanding mechanism, a second inner circle sanding mechanism, a workpiece and a workpiece headstock for fixing the workpiece are arranged on the upper surface of the machine tool body; the workpiece is a cylindrical workpiece; a shaft hole penetrates through the inner part of the workpiece along the axial direction; the first inner circle sanding mechanism and the second inner circle sanding mechanism are respectively arranged on the left side and the right side of the workpiece headstock; the first inner circle grinding mechanism is provided with a first inner circle grinding wheel for grinding the shaft hole; the second inner circle grinding mechanism is provided with a second inner circle grinding wheel for grinding the shaft hole; the first inner grinding wheel and the second inner grinding wheel can rotate in the shaft hole; the first inner circle grinding wheel and the second inner circle grinding wheel are arranged oppositely; the workpiece may be rotated on the workpiece headstock in an axial direction.
Further, the first internal sanding mechanism comprises a first sliding assembly and a first sanding assembly; the first sliding assembly is fixedly arranged on the upper surface of the lathe bed; the first sanding assembly is arranged above the first sliding assembly; the first sliding assembly can drive the first sanding assembly to slide; the first inner circle grinding wheel is arranged on the first sanding component; the first sanding component can drive the first inner circle grinding wheel to rotate.
Further, the first sliding assembly comprises a first longitudinal guide rail seat, a first ball screw, a first longitudinal feeding sliding table and a first servo motor; the first longitudinal guide rail seat is fixedly arranged on the upper surface of the lathe bed; two first guide rails are arranged on the surface of the first longitudinal guide rail seat; the two first guide rails extend along the longitudinal direction of the first longitudinal guide rail seat; the first ball screw is arranged between the two first guide rails, and the first ball screw is parallel to the first guide rails; one end of the first ball screw is in transmission connection with the output end of the first servo motor; the first longitudinal feeding sliding table is arranged on the two first guide rails; the first servo motor can drive the first longitudinal feeding sliding table to slide through the first ball screw.
Further, the first sanding assembly comprises a first fixed seat, a clamping piece and a rotating shaft; the first fixed seat is fixedly arranged on the upper surface of the first longitudinal feeding sliding table; the clamping piece is fixedly arranged on the first fixed seat; the rotating shaft is rotatably clamped in the clamping piece; one end of the rotating shaft is in coaxial transmission connection with the first inner circle grinding wheel.
Further, the second internal sanding mechanism comprises a second sliding assembly and a second sanding assembly; a second servo motor is arranged on the second sliding assembly; the second servo motor can drive the second sanding assembly to slide on the second sliding assembly; the second inner circle sanding mechanism is parallel to the first inner circle sanding mechanism; the second sliding assembly and the first sliding assembly are arranged in a bilateral symmetry manner; the second sanding subassembly can with first sanding subassembly is bilateral symmetry setting.
Further, the workpiece headstock comprises a third sliding assembly and a second fixed seat; the third sliding assembly is fixedly arranged on the upper surface of the lathe bed; the second fixed seat is fixedly arranged on the third sliding assembly; the third sliding assembly can drive the second fixed seat to slide transversely; the workpiece is rotatably arranged on the second fixed seat along the axis direction.
Further, the third sliding assembly comprises a transverse guide rail seat, a transverse ball screw, a transverse feeding sliding table and a third servo motor; the transverse guide rail seat is fixedly arranged on the upper surface of the lathe bed, and is arranged below the second inner circle sanding mechanism; two transverse guide rails are arranged on the transverse guide rail seat; the two transverse guide rails extend along the transverse direction of the transverse guide rail seat; the transverse ball screw is arranged between the two transverse guide rails and is parallel to the transverse guide rails; one end of the transverse ball screw is in transmission connection with the output end of the third servo motor; the transverse feeding sliding table is arranged on the two transverse guide rails; the third servo motor can drive the transverse feeding sliding table to slide through the transverse ball screw rod.
Further, the second fixed seat is fixedly arranged on the upper surface of the transverse feeding sliding table; a clamp is arranged on the upper surface of the second fixed seat; the workpiece is clamped in the clamp; two ends of the shaft hole are respectively arranged towards the first inner circle grinding wheel and the second inner circle grinding wheel; a fourth servo motor is arranged inside the transverse feeding sliding table; the output end of the fourth servo motor and the outer surface of the clamp are sleeved with belts; the fourth servo motor can drive the clamp to rotate through the belt.
Further, a tool setting gauge is arranged on the upper surface of the first longitudinal feeding sliding table; the tool setting gauge and the first sanding assembly are parallel to each other; the tool setting gauge can stretch out and draw back along the transverse direction; the tool setting gauge can extend to the shaft hole; the tool setting gauge is used for measuring the axial position of the workpiece.
Furthermore, a lathe cutter head is respectively arranged above the first sliding assembly and the second sliding assembly; and a plurality of turning tools are arranged in the turning tool disc.
The utility model has the advantages or beneficial effects that:
according to the numerical control double-head inner circle turning and grinding combined machine tool, on one hand, the inner hole, the center hole and the end surfaces on two sides of the workpiece can be respectively machined under numerical control through the first inner circle grinding mechanism and the second inner circle grinding mechanism which are respectively arranged at two ends of the workpiece, and the cost of the device is saved; on the other hand, the inner hole, the central hole and the end face of the workpiece can be machined by clamping once without clamping the workpiece for the second time, and the concentricity of the inner hole of the workpiece is ensured, so that the machining precision of the workpiece is improved, a foundation is provided for the accurate grinding of the outer circle of the subsequent workpiece and the centering of the central hole, and the coaxiality of the inner circle and the outer circle of the workpiece can be effectively ensured.
Drawings
The utility model and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model.
Fig. 1 is a top view of a numerical control double-head inner circular turning and grinding compound machine tool provided in embodiment 1 of the present invention;
fig. 2 is a side view of a numerical control double-head inner circle turning and grinding compound machine tool provided in embodiment 1 of the present invention;
fig. 3 is a cross-sectional view of a workpiece in a numerical control double-head inner circle turning and grinding compound machine tool provided in embodiment 1 of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As used herein, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the positional or orientational relationship illustrated in the figures to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the utility model.
The appearances of the terms first, second, and third, if any, are used for descriptive purposes only and are not intended to be limiting or imply relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the utility model without making creative efforts, belong to the protection scope of the utility model.
Example 1
In the prior art, a method for machining a deep-hole shaft-shaped part basically adopts an alignment mode to position and clamp a workpiece, and a single grinding head grinds the workpiece. Due to the adoption of the processing mode of clamping in a grading way, the concentricity of the two ends of the deep hole and the coaxiality of the inner circle and the outer circle cannot be guaranteed, the requirement on the operating skill of an operator is higher, the labor intensity is high, the processing efficiency is also very low, and the requirement on enterprise production cannot be met.
In order to solve the above technical problems, a numerical control double-end internal circular turning and grinding compound machine tool provided in embodiment 1 includes, as shown in fig. 1 to 3, a horizontally arranged machine tool body 01, and a first internal circular grinding mechanism 1, a second internal circular grinding mechanism 2, a workpiece 3, and a workpiece headstock 4 for fixing the workpiece 3 are arranged on an upper surface of the machine tool body 01; the workpiece 3 is a cylindrical workpiece 3; the inside of the workpiece 3 is provided with a shaft hole 31 along the axial direction; the first inner circle sanding mechanism 1 and the second inner circle sanding mechanism 2 are respectively arranged on the left side and the right side of the workpiece headstock 4; the first internal grinding mechanism 1 is provided with a first internal grinding wheel 11 for grinding the shaft hole 31; the second internal grinding mechanism 2 is provided with a second internal grinding wheel 21 for grinding the shaft hole 31; both the first internal grinding wheel 11 and the second internal grinding wheel 21 are rotatable inside the shaft hole 31; the first internal grinding wheel 11 and the second internal grinding wheel 21 are arranged oppositely; the workpiece 3 is rotatable on the workpiece head 4 in the axial direction.
Compared with the technical scheme of single-side processing, the numerical control double-end internal circle turning and grinding composite machine tool provided by the embodiment 1 has the advantages that on one hand, the inner hole, the center hole and the end surfaces at two sides of the workpiece 3 can be respectively processed through the first internal circle grinding mechanism 1 and the second internal circle grinding mechanism 2 which are respectively arranged at two ends of the workpiece 3, and then, the processing is carried out under numerical control, and the two grinding mechanisms are arranged on the same machine tool, so that the cost of the device is saved, and the inner hole, the center hole and the end surfaces at two sides of the workpiece 3 can be completely processed; on the other hand, the workpiece 3 does not need to be clamped for the second time, the shaft hole 31 of the workpiece 3 can be machined through clamping for the first time, and the concentricity of the inner hole of the workpiece 3 is ensured, so that the machining precision of the workpiece 3 is improved, a foundation is provided for the accurate grinding of the outer circle of the subsequent workpiece 3 and the centering of the central hole, and the coaxiality of the inner circle and the outer circle of the workpiece 3 can be effectively ensured.
Specifically, in this embodiment 1, the workpiece 3 is specifically an outer input shaft of an automobile transmission, the outer portion of the outer input shaft is a multi-step shape, the shaft hole 31 is formed in the inner portion, the first inner circle grinding wheel 11 and the second inner circle grinding wheel 21 both adopt CBN grinding wheels (which can be used as common grinding wheels), each grinding wheel is equipped with a respective dressing wheel, and the machine tool efficiency and the grinding precision are improved.
In order to facilitate the processing of the deep hole of the workpiece 3, in the numerical control double-head internal circle turning and grinding composite machine tool provided in this embodiment 1, as shown in fig. 1 to 3, the first internal circle grinding mechanism 1 includes a first sliding assembly 12 and a first grinding assembly 13; the first sliding component 12 is fixedly arranged on the upper surface of the lathe bed 01; the first sanding assembly 13 is disposed above the first sliding assembly 12; the first sliding assembly 12 can drive the first sanding assembly 13 to slide; the first internal grinding wheel 11 is arranged on the first sanding component 13; the first sanding assembly 13 may drive the first internal grinding wheel 11 in rotation. In this embodiment 1, the first slide assembly 12 is electrically controlled to slide in the direction of the Y1 axis, with the first sanding assembly 13 in the feed position, that is, the axis of the first inner circular grinding wheel 11 is aligned with the axial hole 31 of the workpiece 3, and then the workpiece holder 4 moves the workpiece 3 in the X1 axial direction, approaches the first inner circular grinding wheel 11, so that the first inner grinding wheel 11 contacts with the left end face of the workpiece 3 or projects into the shaft hole 31, the first internal grinding wheel 11 is driven under the electric control to grind the left end of the shaft hole 31, the workpiece headstock 4 gradually approaches to the first internal grinding mechanism 1 in the grinding process, so that the first internal grinding wheel 11 gradually penetrates into the shaft hole 31, when the grinding of the left end face of the shaft hole 31 or the inner surface of the shaft hole 31 is finished, the workpiece headstock 4 drives the workpiece 3 to move away from the first inner circle grinding wheel 11 along the X1 axis direction, and the tool retracting action is completed.
In order to facilitate the sliding function of the first sliding assembly 12, in the numerical control double-head inner circle turning and grinding compound machine tool provided in this embodiment 1, as shown in fig. 1, the first sliding assembly 12 includes a first longitudinal rail seat 121, a first ball screw (not shown), a first longitudinal feeding sliding table 122, and a first servo motor 123; the first longitudinal guide rail seat 121 is fixedly arranged on the upper surface of the lathe bed 01; two first guide rails 1210 are arranged on the surface of the first longitudinal guide rail seat 121; two first guide rails 1210 extend in the longitudinal direction of the first longitudinal rail base 121; the first ball screw is arranged between the two first guide rails 1210 and is parallel to the first guide rails 1210; one end of the first ball screw is in transmission connection with the output end of the first servo motor 123; the first longitudinal feeding slide table 122 is disposed on the two first guide rails 1210; the first servo motor 123 can drive the first longitudinal feeding slide table 122 to slide through the first ball screw. In this embodiment 1, the first servo motor 123 provides power for the first longitudinal feeding sliding table 122, the output end of the first servo motor 123 drives the first ball screw to rotate, and because the first longitudinal feeding sliding table 122 is slidably disposed on the first guide rail 1210, the first ball screw can drive the first longitudinal feeding sliding table 122 to make linear motion along the Y1 axis direction, and drive the first inner circular grinding wheel 11 to move, so as to ensure that the first inner circular grinding wheel 11 slides to the feed position under the electric control.
In order to provide a first sanding component 13 suitable for grinding the shaft hole 31 of the workpiece 3, the numerical control double-head inner circle turning and grinding compound machine tool provided by the embodiment 1, as shown in fig. 1, the first sanding component 13 comprises a first fixed seat 131, a clamping piece 132 and a rotating shaft 133; the first fixing seat 131 is fixedly arranged on the upper surface of the first longitudinal feeding sliding table 122; the clamping member 132 is fixedly disposed on the first fixing seat 131; the rotating shaft 133 is rotatably held in the holder 132; one end of the rotating shaft 133 is coaxially connected with the first internal grinding wheel 11 in a transmission manner. In this embodiment 1, first fixing base 131 rotates for first interior grinding wheel 11 and provides certain fixed supporting effect, and axis of rotation 133 is driven by the inside motor on the lathe, and holder 132 is bilayer structure, and on the skin was fixed in first fixing base 131, the inlayer pressed from both sides axis of rotation 133 tightly, then rotates along with axis of rotation 133, drives first interior grinding wheel 11 and rotates.
In order to provide a second internal grinding mechanism 2 which can be matched with the first internal grinding mechanism 1, the numerical control double-head internal grinding and turning compound machine tool provided by the embodiment 1 is provided, as shown in fig. 1, the second internal grinding mechanism 2 comprises a second sliding assembly 22 and a second grinding assembly 23; the second sliding component 22 is provided with a second servo motor 220; the second servo motor 220 can drive the second sanding assembly 23 to slide on the second sliding assembly 22; the second inner circle sanding mechanism 2 is parallel to the first inner circle sanding mechanism 1; the second sliding component 22 and the first sliding component 12 are arranged in bilateral symmetry; second sanding assembly 23 may be in bilateral symmetry with first sanding assembly 13. In this embodiment 1, because the both ends structure in 3 shaft holes 31 of work piece is different, so the outer surface structure of circle emery wheel 21 is different in first circle emery wheel 11 and the second, and circle sanding mechanism 2 is the same with the structure of first circle sanding mechanism 1 in the second to this can coproduction when guaranteeing two sanding mechanisms of reproduction, simple to operate, and the theory of operation is the same, can install simultaneously. After the left side of the shaft hole 31 of the workpiece 3 is ground, the second sliding assembly 22 drives the second sanding assembly 23 to slide along the Y2 axis, so that the second internal grinding wheel 21 is located at a feed position, at this time, the workpiece headstock 4 drives the workpiece 3 to move along the X1 axis direction and approach the second internal grinding mechanism 2, when the right side end face of the shaft hole 31 or the inner surface of the shaft hole 31 contacts the second internal grinding wheel 21, grinding work is started, and when the right side inner surface of the shaft hole 31 is ground, the workpiece headstock 4 drives the workpiece 3 to gradually approach the second internal grinding mechanism 2, so that the second internal grinding wheel 21 gradually penetrates into the shaft hole 31.
In order to provide a workpiece headstock 4 for facilitating sliding of a workpiece 3, the numerical control double-head inner circle turning and grinding compound machine tool provided in embodiment 1, as shown in fig. 1, the workpiece headstock 4 includes a third sliding assembly 41 and a second fixing seat 42; the third sliding assembly 41 is fixedly arranged on the upper surface of the lathe bed 01; the second fixing seat 42 is fixedly arranged on the third sliding component 41; the third sliding component 41 can drive the second fixing seat 42 to slide transversely; the workpiece 3 is rotatably disposed on the second fixing seat 42 along the axis direction. In this embodiment 1, the fixing seat provides a fixing support function for the workpiece 3, and the third sliding assembly 41 drives the fixing seat to slide along the axis X1, so that the workpiece 3 can be ground by the first internal grinding wheel 11 or the second internal grinding wheel 21.
In order to facilitate the workpiece 3 to implement a feeding or retracting action, in the numerical control double-head inner circle turning and grinding compound machine tool provided in this embodiment 1, as shown in fig. 1, the third sliding assembly 41 includes a transverse guide rail seat 411, a transverse ball screw (not shown), a transverse feeding sliding table 412 and a third servo motor 413; the transverse guide rail seat 411 is fixedly arranged on the upper surface of the bed 01, and the transverse guide rail seat 411 is arranged below the second internal circle sanding mechanism 2; two transverse guide rails 4110 are arranged on the transverse guide rail seat 411; two lateral rails 4110 extend in the lateral direction of the lateral rail seat 411; the transverse ball screw is arranged between the two transverse guide rails 4110 and is parallel to the transverse guide rails 4110; one end of the transverse ball screw is in transmission connection with the output end of the third servo motor 413; the transverse feeding sliding table 412 is arranged on the two transverse guide rails 4110; the third servo motor 413 can drive the transverse feeding sliding table 412 to slide through the transverse ball screw. In this embodiment 1, the third servo motor 413 provides power for the transverse feeding sliding table 412, and the third servo motor 413 drives the transverse ball screw to rotate, and since the transverse feeding sliding table 412 is slidably disposed on the transverse guide rail 4110, the transverse ball screw can drive the transverse feeding sliding table 412 to make a linear motion along the X1 axis direction, and drive the workpiece 3 to move axially in the X1 direction, thereby achieving a feeding or retracting motion under an electric control.
In order to provide a device for conveniently fixing a workpiece 3, in the numerical control double-head inner circle turning and grinding compound machine tool provided in this embodiment 1, as shown in fig. 1, a second fixing seat 42 is fixedly arranged on the upper surface of a transverse feeding sliding table 412; a clamp 420 is arranged on the upper surface of the second fixed seat 42; the workpiece 3 is held in the clamp 420 (the clamp 420 can clamp the workpiece 3 by hydraulic pressure); both ends of the shaft hole 31 are respectively disposed toward the first inner grinding wheel 11 and the second inner grinding wheel 21; a fourth servo motor (not shown) is arranged inside the transverse feeding sliding table 412 and is positioned right below the clamp 420; a belt 4201 is sleeved on the output end of the fourth servo motor and the outer surface of the clamp 420; the fourth servo motor can drive the clamp 420 to rotate through the belt 4201. In this embodiment 1, the fixture shown in fig. 1 is a half-sectional view, the second fixing seat 42 is fixed on the transverse feeding sliding table 412, the fixture 420 is a cylindrical structure, the inner wall of the fixture 420 is matched with the outer surface of the outer input shaft, after the outer input shaft is clamped, two ends of the shaft hole 31 are respectively disposed toward the first inner grinding wheel 11 and the second inner grinding wheel 21, a belt 4201 transmission part is disposed on the outer surface of the fixture 420, when the first inner grinding wheel 11 or the second inner grinding wheel 21 contacts the workpiece 3, the output end of the fourth servo motor drives the fixture 420 to rotate through the belt 4201 transmission, and the workpiece 3 also rotates along with the rotation, so as to perform grinding operation.
In order to ensure the accuracy of the clamping position of the workpiece 3, in the numerical control double-head inner circle turning and grinding compound machine tool provided in this embodiment 1, as shown in fig. 1, a tool setting gauge 5 is arranged on the upper surface of the first longitudinal feeding sliding table 122; the tool setting gauge 5 and the first sanding assembly 13 are parallel to each other; the tool setting gauge 5 can stretch out and draw back along the transverse direction; the tool setting gauge 5 can extend to the shaft hole 31; the tool setting gauge 5 is used for measuring the axial position of the workpiece 3. In this embodiment 1, when the workpiece 3 is clamped to the fixture 420, the first sanding unit 13 is moved along the Y1 axis to align the tool bit of the tool setting gauge 5 with the shaft hole 31 of the workpiece 3, and then the tool setting gauge 5 is extended along the X1 axis toward the workpiece 3 to perform axial measurement of the workpiece 3 with respect to the tool setting gauge 5, thereby ensuring accurate clamping of the workpiece 3 and improving the machining accuracy of the workpiece 3.
Because different turning tools are needed for processing the inner hole, the central hole and the end face of the workpiece 3, in order to facilitate changing the turning tools, the numerical control double-end inner circle turning and grinding composite machine tool provided in embodiment 1 is, as shown in fig. 1, provided with the turning tool discs 6 above the first sliding assembly 12 and the second sliding assembly 22 respectively; a plurality of turning tools are arranged in the turning tool disc 6, and specifically, three turning tools are arranged in the turning tool disc 6 and are respectively used for roughly turning an inner hole and finely turning a central hole and an end face. In this embodiment 1, need use different lathe tools to process work piece 3 before carrying out the grinding to the terminal surface, hole and the downthehole portion of central authorities of work piece 3, can be convenient for the staff through this setting and change the lathe tool, improve machining efficiency.
Because the workpiece 3 is formed by heat treatment in advance, and the workpiece belongs to a deep-hole workpiece and can have a certain deformation amount, the inner hole of the workpiece is firstly roughly turned by adopting a turning tool on the turning tool disc, the central hole and the end face are finely turned, the machining allowance can be removed by turning the workpiece 3, and the end face is ensured to be vertical and the coaxiality of the inner hole and the central hole is ensured.
The working principle of the numerical control double-head inner circle turning and grinding combined machine tool provided by the embodiment 1 is as follows:
when the workpiece 3 is machined, the workpiece 3 is firstly installed on the clamp 420, two ends of the shaft hole 31 of the workpiece 3 face the first inner grinding wheel 11 and the second inner grinding wheel 21, then the tool setting gauge 5 moves along the X1 shaft direction under numerical control, the shaft hole 31 of the workpiece 3 is calibrated, and after the calibration is accurate, the tool setting gauge 5 returns to the initial position;
turning tools can be replaced on the first inner circle sanding mechanism 1 and the second inner circle sanding mechanism 2, firstly, rough turning of an inner hole, finish turning of a center hole and end faces on two sides of a workpiece 3 are carried out, machining allowance is removed, and then grinding is carried out;
grinding: the first servo motor 123 provides power for the first longitudinal feeding sliding table 122, the output end of the first servo motor 123 drives the first ball screw to rotate, and as the first longitudinal feeding sliding table 122 is slidably arranged on the first guide rail 1210, the first ball screw can drive the first longitudinal feeding sliding table 122 to make linear motion along the Y1 axis direction and drive the first inner circle grinding wheel 11 to move, and the first inner circle grinding wheel 11 slides to the feed position;
then, a third servo motor 413 provides power for the transverse feeding sliding table 412, the third servo motor 413 drives a transverse ball screw to rotate, the transverse feeding sliding table 412 is slidably arranged on the transverse guide rail 4110, the transverse ball screw can drive the transverse feeding sliding table 412 to make linear motion along the X1 axis direction and drive the workpiece 3 to move axially at X1, so that the first inner grinding wheel 11 is located at the left end of the workpiece 3, the fourth servo motor drives the workpiece 3 to start rotating, the first inner grinding wheel 11 starts rotating and then starts grinding, during grinding, coarse and semi-fine grinding is preferentially performed on the end face and the inner hole, after end face grinding, the first inner grinding wheel 11 returns to a trimming position on a lathe to trim the grinding wheel, and the grinding wheel is trimmed (due to the fact that the aperture of a part is large, the grinding belongs to deep hole or ultra-long deep hole grinding, the size of grinding allowance can directly influence the grinding efficiency and effect, therefore, the grinding wheel dressing in the grinding process can be selected to be single dressing or multiple dressing), the surface precision of the grinding wheel is improved, then the first inner circle grinding wheel 11 enters the central hole again, and the central hole is finely ground;
after the grinding of left side terminal surface, centre bore and hole of work piece 3, fourth servo motor stall, first interior round sanding mechanism 1 moves back sword work, second interior round sanding mechanism 2 begins work, the theory of operation is the same with first sanding mechanism, it gives unnecessary here to describe repeatedly, however, the right side of work piece 3 does not have the terminal surface, as shown in fig. 3, do not need grinding right side terminal surface, only need to carry out the grinding to centre bore and hole can, when second sanding subassembly 23 entered into the feed position, horizontal feed slip table 412 is linear motion along X1 axle direction, and drive work piece 3 at X1 axial motion, and be close to interior round grinding wheel 21 of second, be located the right side end of work piece 3 when interior round grinding wheel 21 of second, fourth servo motor begins to rotate, second grinding wheel 21 rotates, interior round grinding work carries out.
After the grinding operation is finished, the workpiece is returned to the initial position, the grinding part is unloaded and replaced, and the workpiece is sent to the next grinding part.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A numerical control double-head inner circle turning and grinding combined machine tool is characterized by comprising a horizontally arranged machine tool body, wherein a first inner circle grinding mechanism, a second inner circle grinding mechanism, a workpiece and a workpiece headstock used for fixing the workpiece are arranged on the upper surface of the machine tool body;
the workpiece is a cylindrical workpiece; a shaft hole penetrates through the inner part of the workpiece along the axial direction; the first inner circle sanding mechanism and the second inner circle sanding mechanism are respectively arranged on the left side and the right side of the workpiece headstock; the first inner circle grinding mechanism is provided with a first inner circle grinding wheel for grinding the shaft hole; the second inner circle grinding mechanism is provided with a second inner circle grinding wheel for grinding the shaft hole; the first inner grinding wheel and the second inner grinding wheel can rotate in the shaft hole; the first inner circle grinding wheel and the second inner circle grinding wheel are arranged oppositely; the workpiece may be rotated on the workpiece headstock in an axial direction.
2. The numerically controlled double-ended internal circular lathing and grinding compound machine tool according to claim 1, wherein the first internal circular sanding mechanism comprises a first sliding assembly and a first sanding assembly;
the first sliding assembly is fixedly arranged on the upper surface of the lathe bed; the first sanding assembly is arranged above the first sliding assembly; the first sliding assembly can drive the first sanding assembly to slide; the first inner circle grinding wheel is arranged on the first sanding component; the first sanding component can drive the first inner circle grinding wheel to rotate.
3. The numerical control double-head inner circle turning and grinding combined machine tool according to claim 2, wherein the first sliding assembly comprises a first longitudinal guide rail seat, a first ball screw, a first longitudinal feeding sliding table and a first servo motor;
the first longitudinal guide rail seat is fixedly arranged on the upper surface of the lathe bed;
two first guide rails are arranged on the surface of the first longitudinal guide rail seat; the two first guide rails extend along the longitudinal direction of the first longitudinal guide rail seat; the first ball screw is arranged between the two first guide rails, and the first ball screw is parallel to the first guide rails; one end of the first ball screw is in transmission connection with the output end of the first servo motor;
the first longitudinal feeding sliding table is arranged on the two first guide rails; the first servo motor can drive the first longitudinal feeding sliding table to slide through the first ball screw.
4. The numerically controlled double-ended internal circular turning and grinding compound machine tool according to claim 3, wherein the first grinding assembly comprises a first fixed seat, a clamping member and a rotating shaft; the first fixed seat is fixedly arranged on the upper surface of the first longitudinal feeding sliding table; the clamping piece is fixedly arranged on the first fixed seat; the rotating shaft is rotatably clamped in the clamping piece; one end of the rotating shaft is in coaxial transmission connection with the first inner circle grinding wheel.
5. The numerically controlled double-ended internal circular lathing and grinding compound machine tool according to claim 2, wherein the second internal circular sanding mechanism comprises a second sliding assembly and a second sanding assembly;
a second servo motor is arranged on the second sliding assembly; the second servo motor can drive the second sanding assembly to slide on the second sliding assembly;
the second inner circle sanding mechanism is parallel to the first inner circle sanding mechanism; the second sliding assembly and the first sliding assembly are arranged in a bilateral symmetry manner; the second sanding subassembly can with first sanding subassembly is bilateral symmetry setting.
6. The numerically controlled double-ended internal circular turning and grinding compound machine tool according to claim 1, wherein the workpiece headstock comprises a third slide assembly and a second fixed seat; the third sliding assembly is fixedly arranged on the upper surface of the lathe bed; the second fixed seat is fixedly arranged on the third sliding assembly; the third sliding assembly can drive the second fixed seat to slide transversely; the workpiece is rotatably arranged on the second fixed seat along the axis direction.
7. The numerical control double-head inner circle turning and grinding combined machine tool according to claim 6, wherein the third sliding assembly comprises a transverse guide rail seat, a transverse ball screw, a transverse feeding sliding table and a third servo motor;
the transverse guide rail seat is fixedly arranged on the upper surface of the lathe bed, and is arranged below the second inner circle sanding mechanism;
two transverse guide rails are arranged on the transverse guide rail seat; the two transverse guide rails extend along the transverse direction of the transverse guide rail seat; the transverse ball screw is arranged between the two transverse guide rails and is parallel to the transverse guide rails; one end of the transverse ball screw is in transmission connection with the output end of the third servo motor;
the transverse feeding sliding table is arranged on the two transverse guide rails; the third servo motor can drive the transverse feeding sliding table to slide through the transverse ball screw rod.
8. The numerical control double-head inner circle turning and grinding combined machine tool according to claim 7, characterized in that the second fixing seat is fixedly arranged on the upper surface of the transverse feeding sliding table; a clamp is arranged on the upper surface of the second fixed seat; the workpiece is clamped in the clamp; two ends of the shaft hole are respectively arranged towards the first inner circle grinding wheel and the second inner circle grinding wheel;
a fourth servo motor is arranged inside the transverse feeding sliding table; the output end of the fourth servo motor and the outer surface of the clamp are sleeved with belts; the fourth servo motor can drive the clamp to rotate through the belt.
9. The numerical control double-head inner circle turning and grinding combined machine tool according to claim 3, wherein a tool setting gauge is arranged on the upper surface of the first longitudinal feeding sliding table; the tool setting gauge and the first sanding assembly are parallel to each other; the tool setting gauge can stretch out and draw back along the transverse direction; the tool setting gauge can extend to the shaft hole; the tool setting gauge is used for measuring the axial position of the workpiece.
10. The numerical control double-end inner circle turning and grinding combined machine tool according to claim 5, characterized in that turning tool discs are respectively arranged above the first sliding assembly and the second sliding assembly; and a plurality of turning tools are arranged in the turning tool disc.
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| CN202122871056.2U CN216227931U (en) | 2021-11-19 | 2021-11-19 | Numerical control double-end inner circle turning and grinding combined machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113977290A (en) * | 2021-11-19 | 2022-01-28 | 无锡七机机床有限公司 | Numerical control double-end inner circle turning and grinding combined machine tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977290A (en) * | 2021-11-19 | 2022-01-28 | 无锡七机机床有限公司 | Numerical control double-end inner circle turning and grinding combined machine tool |
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