CN223776176U

CN223776176U - Multi-line and single-line combined external thread grinding machine

Info

Publication number: CN223776176U
Application number: CN202520739242.6U
Authority: CN
Inventors: 赵虎; 李媛媛
Original assignee: Guangzhou City Agile Manufacturing Co ltd
Current assignee: Guangzhou City Agile Manufacturing Co ltd
Priority date: 2025-04-17
Filing date: 2025-04-17
Publication date: 2026-01-09
Anticipated expiration: 2035-04-17

Abstract

This utility model discloses a multi-line and single-line composite external thread grinding machine, including a bed and Z-axis slides and X-axis slides arranged on the upper surface of the bed. The Z-axis slide is equipped with a workpiece spindle and at least one outer circle support frame corresponding to the workpiece spindle. The X-axis slide is equipped with a grinding wheel spindle and a swing angle device that can drive the grinding wheel spindle to rotate. A coarse grinding wheel and a fine grinding wheel are concentrically arranged on the grinding wheel spindle. The coarse grinding wheel is located outside the fine grinding wheel. The workpiece spindle clamps one end of the outer circle of the workpiece, and the outer circle of the workpiece is supported and fixed by the outer circle support frame. By setting the coarse grinding wheel outside the fine grinding wheel and stacking them on the same grinding wheel spindle, the fine grinding wheel will not interfere with the tailstock when coarse grinding parts, which not only reduces the processing cost but also improves the processing efficiency. This utility model belongs to the field of grinding technology.

Description

Multi-line and single-line combined external thread grinding machine

Technical Field

The utility model belongs to the technical field of grinding, and particularly relates to a multi-line and single-line combined external thread grinding machine.

Background

The machining is divided into rough machining, finish machining, heat treatment and other machining modes, grinding belongs to finish machining in machining, the machining amount is small, the precision is high, the existing thread grinder adopts a workpiece spindle and a tailstock double-top, and a rough grinding wheel and a finish grinding wheel are respectively arranged on one side of the thread grinder to finish the grinding machining of external threads, so that the grinding operation of a central hole is required to be carried out before the machining of the workpiece, the steps are complicated, and the finish grinding wheel can interfere with the tailstock when the workpiece is roughly ground, so that the machining precision is reduced and the machining cost is increased.

Disclosure of utility model

The utility model mainly aims to provide a multi-line and single-line compound external thread grinding machine which can avoid machining interference, ensure machining precision and reduce machining cost.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

The utility model provides a multi-line and single line compound external thread grinder, includes the lathe bed and is in Z to slide and the X that the lathe bed up end set up is to the slide, be equipped with the work piece main shaft on the Z to the slide and with at least one excircle support frame that the work piece main shaft corresponds the setting, be equipped with grinding wheel main shaft and can drive on the X to the slide grinding wheel main shaft pivoted angle of swing device, be provided with coarse grinding emery wheel and finish grinding emery wheel on the grinding wheel main shaft with one heart, the coarse grinding emery wheel is located the outside of finish grinding emery wheel.

According to an embodiment of the first aspect of the present utility model, the outer circle supporting frame includes a first clamping jaw mechanism, a second clamping jaw mechanism, and a push rod mechanism disposed between the first clamping jaw mechanism and the second clamping jaw mechanism, which are disposed on the same side of the frame body.

According to an embodiment of the first aspect of the present utility model, the first clamping jaw mechanism includes a first clamping jaw hinged to the frame body, a first ejector rod acting on the tail end of the first clamping jaw, and a first floating pressing plate disposed at the movable end of the first clamping jaw.

According to an embodiment of the first aspect of the present utility model, a first adjusting nut for adjusting the reciprocating motion of the first ejector rod is provided on one side of the frame body.

According to the embodiment of the first aspect of the utility model, the second clamping jaw mechanism comprises a second clamping jaw with one end hinged with the frame body and a second ejector rod for pushing the other end of the second clamping jaw to swing up and down, and a second floating pressing plate is arranged at one end of the second clamping jaw corresponding to the first clamping jaw mechanism.

According to an embodiment of the first aspect of the present utility model, a second adjusting nut is disposed at an end of the second ejector rod away from the second clamping jaw.

According to an embodiment of the first aspect of the present utility model, the ejector rod mechanism includes a third ejector rod and a floating ejector block disposed at one end of the third ejector rod, and a third adjusting nut is disposed at one end of the third ejector rod away from the floating ejector block.

According to an embodiment of the first aspect of the present utility model, the swing angle device includes a stand column, a first driving motor provided on the stand column, and a swing portion capable of rotating the grinding wheel spindle by the first driving motor.

According to an embodiment of the first aspect of the present utility model, the swinging portion includes a guide band-type brake plate, a swinging mandrel, and a swinging sliding plate that can rotate around the swinging mandrel, and one end of the swinging sliding plate, which is far away from the swinging mandrel, is slidably connected with the guide band-type brake plate.

According to an embodiment of the first aspect of the present utility model, a connecting rod is provided perpendicular to the swing sliding plate, one end of the connecting rod is connected to the output end of the first driving motor, and the other end of the connecting rod is connected to the swing sliding plate.

One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:

According to the utility model, one end excircle of a workpiece can be clamped through the workpiece main shaft, and then the excircle of the workpiece is supported and fixed through the excircle supporting frame, and the rough grinding wheel is arranged on the outer side of the finish grinding wheel and is arranged on the same grinding wheel main shaft in a laminated manner, so that the finish grinding wheel cannot interfere with a tailstock when a part is roughly ground, and the contour is further refined through finish grinding to ensure the precision, so that the processing cost is reduced, and the processing efficiency is improved.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is an overall block diagram of one embodiment of the present utility model;

FIG. 2 is an overall block diagram of another view of one embodiment of the present utility model;

FIG. 3 is a side view of one embodiment of the present utility model;

FIG. 4 is a diagram showing an arrangement of a plurality of outer circumferential support frames according to an embodiment of the present utility model;

Fig. 5 is a block diagram of an outer circle support frame according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more features.

In the description of the present utility model, unless explicitly specified and limited otherwise, the term "connected" shall be construed broadly, and may be, for example, fixedly connected or movably connected, detachably connected or non-detachably connected, integrally connected, mechanically connected or electrically connected or communicable with each other, directly connected or indirectly connected through intermediaries, or in communication with each other, or in an interaction relationship between two elements.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.

Referring to fig. 1 to 5, a multi-wire and single-wire compound external thread grinder comprises a lathe bed 1, a workpiece spindle 2, an outer circle support frame 3, a grinding wheel spindle 4, a swing angle device 5 and a grinding wheel dresser arranged on the workpiece spindle 2.

In one embodiment of the utility model, the upper end surface of the lathe bed 1 is provided with a Z-direction sliding plate 11 for installing the workpiece spindle 2 and the excircle supporting frame 3 and an X-direction sliding plate 12 for installing the grinding wheel spindle 4 and the swinging angle device 5, and an X-direction transmission mechanism and a Z-direction transmission mechanism are respectively arranged below the X-direction sliding plate 12 and the Z-direction sliding plate 11.

In one embodiment of the present utility model, one or more of the outer circle supporting frames 3 may be sequentially arranged (refer to fig. 5), so that the processing of long shaft parts can be processed according to the length setting of the processed parts, the rigidity during processing is further improved, the error is reduced, the outer circle supporting frames 3 comprise a first clamping jaw mechanism 31, a second clamping jaw mechanism 32 and a top rod mechanism 33 arranged at the same side of a frame body 34, a movable cavity for placing a workpiece is arranged between the first clamping jaw mechanism 31 and the second clamping jaw mechanism 32, and the movable cavity is arranged between the first clamping jaw mechanism 31, the second clamping jaw mechanism 32 and the top rod mechanism 33 and is used for supporting the outer circle of the workpiece to be processed.

In one embodiment of the present utility model, the first clamping jaw mechanism 31 includes a first clamping jaw 311 hinged with the frame 34, a first ejector rod 312 acting on the tail end of the first clamping jaw 311, and a first floating pressing plate 313 disposed at the movable end of the first clamping jaw 311, and a first adjusting nut 314 for adjusting the reciprocating movement of the first ejector rod 312 is disposed at one side of the frame 34.

In one embodiment of the present utility model, the second jaw mechanism 32 includes a second jaw 321 with one end hinged to the frame 34, and a second ejector rod 322 for pushing the other end of the second jaw 321 to swing up and down, where a second floating pressing plate 323 is disposed at an end of the second jaw 321 corresponding to the first jaw mechanism 31, and a second adjusting nut 324 is disposed at an end of the second ejector rod 322 away from the second jaw 321.

In one embodiment of the present utility model, the ejector mechanism 33 includes a third ejector rod 331 and a floating ejector block 332 disposed at one end of the third ejector rod 331, and a third adjusting nut 333 is disposed at one end of the third ejector rod 331 far away from the floating ejector block 332, so that an outer circle at one end of a workpiece can be clamped by the workpiece spindle 2, and the first adjusting nut 314, the second adjusting nut 324 and the third adjusting nut 333 are adjusted to support the outer circle of the workpiece, thereby finishing the grinding operation of the external thread, eliminating the need of grinding a central hole and supporting a tailstock, optimizing the process flow, reducing the processing cost and improving the processing efficiency.

In one embodiment of the present utility model, the first floating pressing plate 313, the first clamping jaw 311, the floating top block 332, the third top rod 331, the second floating pressing plate 323 and the second clamping jaw 321 are all in floating connection, so that various complex parts and working conditions can be adapted, the operation is simple, vibration can be effectively reduced, and the processing efficiency and the processing precision are improved.

In one embodiment of the present utility model, the swing angle device 5 includes a stand column 51, a first driving motor 52 disposed on the stand column 51, and a swing portion capable of enabling the grinding wheel spindle 4 to rotate through the first driving motor 52, wherein the swing portion includes a guide holding plate 61, a swing spindle, a swing sliding plate 63 capable of rotating around the swing spindle, and a connecting rod disposed perpendicular to the swing sliding plate 63, the grinding wheel spindle 4 is disposed on the swing sliding plate 63, two first rolling bearings are disposed on the connecting rod at intervals, two second rolling bearings are disposed on the swing spindle in a sleeved manner, and the two second rolling bearings are disposed at two ends of the swing spindle respectively, so that the swing precision and the bearing capacity of the swing spindle are further improved.

In one embodiment of the present utility model, one end of the swing sliding plate 63 far away from the swing mandrel is slidably connected with the guide holding plate 61, one end of the connecting rod is connected with the output end of the first driving motor 52, and the other end of the connecting rod is connected with the swing sliding plate 63, i.e. a driving mode of motor and screw rod is adopted, so that not only the bearing capacity is improved, but also the driving force is further increased.

An angle encoder is arranged at one end of the swing mandrel far away from the swing sliding plate 63, so that accuracy of the swing angle is known through feedback of the angle encoder, closed-loop control is conducted on the swing angle through the angle encoder, and swing angle accuracy is guaranteed.

In one embodiment of the utility model, the rough grinding wheel 41 and the fine grinding wheel 42 are concentrically arranged on the grinding wheel spindle 4, and the rough grinding wheel 41 is positioned on the outer side of the fine grinding wheel 42, namely, the rough grinding wheel 41 and the fine grinding wheel 42 are installed on the same grinding wheel spindle 4 in a lamination manner, so that the fine grinding wheel 42 cannot interfere with a tailstock when a part is roughly ground, the purpose that a grinding wheel spindle can not only meet the requirement of roughly grinding and removing most grinding allowance of the part is achieved, but also precision is ensured, efficiency is improved and cost is reduced through fine contour trimming of the fine grinding wheel 42 is achieved.

In one embodiment of the present utility model, the grinding wheel dresser is preferably a diamond roller spindle, and is mounted on the spindle head of the workpiece spindle 2 and is coaxially disposed with the workpiece spindle 2, so that the rough grinding wheel 41 and the finish grinding wheel 42 can be dressed by using the diamond roller by using the power rotation of the workpiece spindle 2, thereby eliminating the need of additionally providing the diamond roller spindle and effectively reducing the size of the grinding machine.

In one embodiment of the utility model, the guide holding gate plate 61 adopts high-performance steel double-sided heat treatment, so that the sliding smoothness is ensured, the holding gate strength is improved, and the process difficulty is reduced. One side of the guiding holding gate plate 61 is provided with a holding gate device for fixing the position of the swing sliding plate 63, the holding gate device comprises a second driving motor arranged on the upright post 51, the guiding holding gate plate 61 is close to or far away from the swing sliding plate 63 through the second driving motor, and the holding gate device is used for locking and holding so as to fix the specific positions of the swing sliding plate 63 and the grinding wheel spindle 4.

The process for machining by utilizing the multi-line and single-line combined external thread grinding machine comprises the following steps of firstly adjusting a first clamping jaw mechanism 31, a second clamping jaw mechanism 32 and a push rod mechanism 33 to adapt to workpieces with different sizes, and placing workpieces to be machined in a movable cavity;

Further rotation of the first adjustment nut 314, the second adjustment nut 324, and the third adjustment nut 333 causes the first push rod 312 to push the first floating platen 313, the second push rod 322 to push the second floating platen 323, and the third push rod 331 to push the floating roof 332 to support the outer circumference of the workpiece;

Further moving the frame 34 along the Z axis, clamping the excircle of the workpiece by matching with the workpiece spindle 2 at one side, and finishing the fixation of the workpiece to be processed;

Further, the first driving motor 52 enables the swinging sliding plate 63 to circumferentially slide on the upright post 51 and the guiding holding flashboard 61 along the swinging mandrel, so that the grinding wheel spindle 4 is swung to a corresponding angle;

Finally, the outer circular surfaces of the workpieces to be processed in the movable cavity are respectively processed through the rough grinding wheel 41 and the fine grinding wheel 42, and the rough grinding wheel 41 and the fine grinding wheel 42 are trimmed by a wheel trimmer.

The multi-line and single-line combined external thread grinding machine does not need a tailstock to prop against small roller shaft parts, clamps the excircle by utilizing one end of the workpiece spindle 2, supports the excircle of the workpiece by the excircle support frame 3, and can finish grinding of external threads by positioning the excircle of the workpiece, so that a grinding center hole is not needed, the tailstock to prop against is not needed, the processing process flow is saved, and the processing cost is saved.

The workpiece positioning method by using the outer circle support frame 3 solves the problem that the supporting rigidity and damping characteristics are difficult to accurately control in the prior art, can be suitable for various complicated parts and working conditions, and particularly can effectively prevent the bending and vibration of the workpiece caused by dead weight or cutting force when processing long-axis workpieces, and has the advantages of simple operation and vibration reduction, thereby improving the processing efficiency and the processing precision.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a multi-line and single-line compound external thread grinder, includes lathe bed (1) and in Z that lathe bed (1) up end set up is to slide (11) and X to slide (12), its characterized in that, be equipped with work piece main shaft (2) on Z to slide (11) and with at least one excircle support frame (3) that work piece main shaft (2) correspond the setting, be equipped with grinding wheel main shaft (4) and can drive on X to slide (12) grinding wheel main shaft (4) pivoted angle of oscillation device (5), be provided with coarse grinding wheel (41) and fine grinding wheel (42) on grinding wheel main shaft (4) with one heart, coarse grinding wheel (41) are located the outside of fine grinding wheel (42).

2. The multi-wire and single-wire compound external thread grinding machine according to claim 1, wherein the external circle support frame (3) comprises a first clamping jaw mechanism (31) and a second clamping jaw mechanism (32) which are arranged on the same side of a frame body (34), and a push rod mechanism (33) which is arranged between the first clamping jaw mechanism (31) and the second clamping jaw mechanism (32).

3. The multi-wire and single-wire compound external thread grinder according to claim 2, wherein the first jaw mechanism (31) comprises a first jaw (311) hinged with the frame body (34), a first ejector rod (312) acting on the tail end of the first jaw (311), and a first floating pressing plate (313) arranged at the movable end of the first jaw (311).

4. The multi-wire and single-wire compound external thread grinding machine as set forth in claim 3, wherein a first adjusting nut (314) for adjusting the reciprocation of the first ejector rod (312) is provided on one side of the frame body (34).

5. The multi-wire and single-wire compound external thread grinder according to claim 2, wherein the second clamping jaw mechanism (32) comprises a second clamping jaw (321) with one end hinged with the frame body (34) and a second ejector rod (322) for pushing the other end of the second clamping jaw (321) to swing up and down, and a second floating pressing plate (323) is arranged at one end of the second clamping jaw (321) corresponding to the first clamping jaw mechanism (31).

6. The multi-wire and single-wire compound external thread grinding machine according to claim 5, wherein a second adjusting nut (324) is arranged at one end of the second ejector rod (322) far away from the second clamping jaw (321).

7. The multi-wire and single-wire compound external thread grinding machine according to claim 2, wherein the ejector rod mechanism (33) comprises a third ejector rod (331) and a floating ejector block (332) arranged at one end of the third ejector rod (331), and a third adjusting nut (333) is arranged at one end of the third ejector rod (331) far away from the floating ejector block (332).

8. The multi-wire and single-wire compound external thread grinding machine according to claim 1, wherein the swing angle device (5) comprises a stand column (51), a first driving motor (52) arranged on the stand column (51), and a swing part capable of enabling the grinding wheel spindle (4) to rotate through the first driving motor (52).

9. The multi-wire and single-wire compound external thread grinding machine according to claim 8, wherein the swinging part comprises a guide holding gate plate (61), a swinging mandrel and a swinging sliding plate (63) capable of rotating around the swinging mandrel, and one end of the swinging sliding plate (63) away from the swinging mandrel is in sliding connection with the guide holding gate plate (61).

10. The multi-wire and single-wire compound external thread grinding machine according to claim 9, wherein a connecting rod is arranged perpendicular to the swinging sliding plate (63), one end of the connecting rod is connected with the output end of the first driving motor (52), and the other end of the connecting rod is connected with the swinging sliding plate (63).