CN214109823U

CN214109823U - Main shaft hole grinding machine tool

Info

Publication number: CN214109823U
Application number: CN202023133364.7U
Authority: CN
Inventors: 苏春堂; 张江; 韩秀武; 李雪晓; 王晓东; 魏娜; 胡洋洋
Original assignee: ANYANG XINSHENG MACHINE TOOL CO LTD
Current assignee: ANYANG XINSHENG MACHINE TOOL CO LTD
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-03
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a main shaft inner hole grinding machine tool, a main shaft rotating mechanism is arranged on the machine tool, a center frame mechanism and a grinding head mechanism are sequentially arranged on the machine tool at the other side of the main shaft rotating mechanism, the center frame mechanism comprises a hydraulic center frame and a taper hole center frame, the center of a clamping mechanism clamping center of the hydraulic center frame coincides with the center of a main shaft workpiece excircle reference surface, the inner hole of the clamping mechanism of the taper hole center frame is of a conical structure, the inner hole taper is the same as the taper of the main shaft workpiece, the main shaft external taper reference surface is positioned, the workpiece inner hole obtained by processing is ensured to have good coaxiality with the workpiece excircle reference surface and the external taper reference surface, the repeated positioning precision can reach 0.01mm, the bearing bush of the taper hole center frame adopts babbitt alloy bearing bush, the wear resistance of the taper hole center frame is increased, the outer surface of the workpiece is not damaged, the whole device is simple to install, and has good precision retentivity, the working efficiency is improved, and the cost is reduced.

Description

Main shaft hole grinding machine tool

Technical Field

The utility model belongs to the technical field of mechanical equipment manufacture technique and specifically relates to a main shaft hole grinding lathe.

Background

The lathe spindle is one of key parts of a machine tool, the manufacturing quality of the lathe spindle has great influence on the quality of the whole machine, grinding is the last procedure in the machining process of the lathe spindle, and particularly, in the grinding process of an inner hole of the spindle, the machining precision of a grinding machine directly influences the quality of the spindle. At present, the grinding of the inner hole of the machine tool spindle needs to be realized on an imported grinding machine so as to ensure the machining precision of the spindle, and meanwhile, the imported grinding machine has better machining precision retentivity, but the imported grinding machine has the defects of high price, low efficiency and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at high price, the inefficiency of import grinding machine, and the problem of the unable main shaft hole abrasive machining who realizes the high accuracy of traditional lathe provides a main shaft hole abrasive machining, realizes the high accuracy abrasive machining of main shaft hole.

The technical scheme of the utility model specifically does:

the utility model provides a main shaft hole grinding machine, includes the lathe, is equipped with main shaft slewing mechanism on the lathe, and main shaft slewing mechanism includes headstock and top, and the headstock passes through the bearing to be connected with the lathe rotation, and the headstock is connected with the motor, has set gradually centre frame mechanism and bistrique mechanism on the lathe of main shaft slewing mechanism opposite side, centre frame mechanism includes hydraulic pressure centre frame and taper hole centre frame, all is equipped with the fixture that is used for fixed and support main shaft work piece on hydraulic pressure centre frame and the taper hole centre frame, and the fixture centre gripping of hydraulic pressure centre frame coincides with main shaft work piece excircle reference surface center, and the fixture hole of taper hole centre frame is the toper structure, and the hole tapering is the same with main shaft work piece tapering, is provided with the axle bush on the taper hole centre frame, the axle bush is babbitt alloy axle bush.

The center is fixed on one side of the headstock, the center comprises a flat center and a taper center fixed with one end of the flat center through a connecting sleeve, a shifting lever for shifting the connecting sleeve to rotate is fixed on the headstock, three or more tension springs are uniformly fixed on one side of the headstock around the flat center, and the other ends of the tension springs are fixedly connected with the connecting sleeve.

The grinding head mechanism comprises a saddle and a grinding head rotatably connected with the saddle, the saddle is slidably connected with the machine tool, and the saddle and the grinding head are both connected with a motor.

The clamping centers of the hydraulic center frame and the taper hole center frame are on the same horizontal line.

Compared with the prior art, the utility model discloses a main shaft hole grinding machine tool, through improving traditional lathe, remove the knife rest and the chuck of former lathe, be equipped with main shaft slewing mechanism, centre frame and bistrique mechanism in proper order, centre frame mechanism is two centre frames, including hydraulic centre frame and taper hole centre frame, hydraulic centre frame is used for supporting main shaft work piece excircle reference surface, and the taper hole tapering of taper hole centre frame keeps the unanimity with the main shaft work piece tapering of processing, fixes a position main shaft external taper reference surface, ensures that the work piece hole that obtains by processing has good axiality with work piece excircle reference surface and external taper reference surface, and repeated positioning accuracy can reach 0.01 mm; and the bearing bush of the taper hole center frame adopts the babbitt metal bearing bush, so that the wear resistance of the taper hole center frame is improved, the outer surface of a workpiece is not damaged, the whole device is simple to mount and convenient to adjust, and has better precision retentivity, the working efficiency is improved, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the spindle rotating mechanism.

Fig. 3 is a schematic view of a-direction hydraulic center frame structure.

Fig. 4 is a schematic view of the structure of the A-direction taper hole center frame.

Wherein, 1 is a machine tool; 2 is a head frame; 3 is a deflector rod; 4 is a connecting sleeve; 5 is a tension spring; 6 is a taper centre; 7 is a hydraulic steady rest; 8 is a taper hole center frame; 9 is a grinding head; 10 is a saddle; 11 is a flat top tip; 12 is a steel ball; 13 is a spindle workpiece; 14 is a hook; and 15 is a set screw.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

As shown in fig. 1-4, the utility model relates to a main shaft inner hole grinding machine tool, which comprises a machine tool 1, a main shaft rotating mechanism, a center frame mechanism and a grinding head mechanism are sequentially arranged on the machine tool 1, the main shaft rotating mechanism comprises a headstock 2 and a tip, the headstock 2 is rotatably connected with the machine tool 1 through a bearing, the headstock 2 is connected with a motor, during operation, the motor drives the headstock 2 to rotate around a rotating shaft in the horizontal direction, the tip is fixed on one side of the headstock 2 and comprises a flat top 11 fixedly connected with the headstock 2 and a taper top 6 fixedly connected with the flat top 11 through a connecting sleeve 4, the flat top 11 and the taper top 6 are both in a cylindrical structure, the taper top 6 is divided into two sections, one section is a front section 6-1 with a smaller outer diameter, the other end is a rear section 6-2 with a larger outer diameter, the outer diameter of the front section 6-1 of the taper top 6 is matched with the inner diameter of the groove on one side of the connecting sleeve 4, namely, the front section 6-1 of the taper center 6 is clamped in the connecting sleeve 4 and is tightly pressed through the fixing screw 15 and fixed in the groove at one side of the connecting sleeve 4, the outer diameter of the rear section 6-2 of the taper center 6 is matched with the inner diameter of the inner hole at the non-processing end of the main shaft workpiece 13, namely, the rear section 6-2 of the taper center 6 is clamped in the main shaft workpiece 13, and the main shaft workpiece 13 is driven to rotate through the friction force between the inner hole of the main shaft workpiece 13 and the rear section of the taper center 6. The axis of the taper center 6 and the clamping center of the center frame mechanism are on the same straight line, the connecting sleeve 4 is positioned on the flat top 11 through the steel ball 12, the head frame 2 is fixed with the shift lever 3, the shift lever 3 is of an overturned L-shaped structure, the upper section of the shift lever 3 is parallel to the flat top 11, the lower section of the shift lever 3 is perpendicular to the flat top 11, the length of the lower section of the shift lever 3 is larger than the distance between the upper section of the shift lever 3 and the connecting sleeve 4, and the rotation of the connecting sleeve 4 is driven through the rotation of the shift lever 3. Three or more than three tension springs 5 are uniformly fixed on the side surface of the headstock 2 in the circumferential direction around the headstock 11, the other ends of the tension springs 5 are connected with corresponding hooks 14 on the connecting sleeve 4, and when the shifting rod 3 drives the connecting sleeve and the taper center 6 to rotate together, the tension springs 5 play an auxiliary role, so that the rotating easiness of the connecting sleeve 4 and the taper center 6 is increased. The center frame mechanism comprises a hydraulic center frame 7 and a taper hole center frame 8, a clamping mechanism is arranged on the hydraulic center frame 7, the clamping mechanism of the hydraulic center frame 7 is semicircular, the part of the clamping mechanism of the hydraulic center frame 7, which is contacted with the spindle workpiece 13, comprises two arc supports which are vertically symmetrical and a middle support which is positioned in the middle of the two arc supports and is in a horizontal direction, the two arc supports which are vertically symmetrical are hinged with the hydraulic center frame 7 and are fixedly contacted with the spindle workpiece 13 through rotation relative to a hinged point, the middle support is fixedly contacted with the spindle workpiece 13 through horizontal linear motion, the two arc supports and the middle support jointly form support and fixation for the spindle workpiece 13, and the circle center of a circle formed by the two arc supports and the middle support is superposed with the center of an excircle reference plane of the spindle workpiece 13. The outer circle reference surface of the spindle workpiece 13 penetrates through the hydraulic center frame 7 and is clamped by the hydraulic center frame 7, the conical hole center frame 8 is also provided with a clamping mechanism, an inner hole of the clamping mechanism of the conical hole center frame 8 is a conical cylinder and has a certain width, the outer taper reference surface of the spindle workpiece 13 penetrates through the inner hole of the clamping mechanism of the conical hole center frame 8 and is fixed by the conical hole center frame 8, the taper of the inner hole of the clamping mechanism of the conical hole center frame 8 is the same as that of the spindle workpiece 13, the outer taper reference surface of the spindle workpiece 13 can be better attached to the inner hole of the conical hole center frame 8, and the precision of the spindle workpiece 13 in the machining process is further improved.

The grinding head mechanism comprises a grinding head 9 and a saddle 10, the saddle 10 and the grinding head 9 are respectively connected with a motor, the saddle 10 is connected with a machine tool 1 in a sliding way through a guide rail, the motor drives the saddle 10 to reciprocate horizontally along the guide rail, the motor drives the saddle 10 and the grinding head 9 to move horizontally forward or backward during work, the grinding head 9 is arranged on the saddle 10 in a rotating way, during work, the motor drives the grinding head 9 to rotate around a horizontal rotating shaft to grind a main shaft workpiece 13, the rotating direction of the grinding head 9 is opposite to that of the headstock 2, the headstock 2 drives the main shaft workpiece 13 to rotate towards the opposite direction of the rotation of the grinding head 9, through the opposite rotation of the grinding head 9 and the main shaft workpiece 13, the complete grinding of an inner hole of the main shaft workpiece 13 by the grinding head 9 is realized, the saddle 10 reciprocates back and forth on the machine tool (1) to drive the grinding head 9 to move in the horizontal direction, through the opposite rotation of the grinding head 9 and the main shaft workpiece 13 and the horizontal direction movement of the grinding head 9, the whole grinding process of the main shaft workpiece 13 is realized.

The clamping centers of the hydraulic center frame 7 and the taper hole center frame 8 are on the same horizontal line, and the inner hole of the machined spindle workpiece 13 is ensured to be coaxial with the outer circle reference surface and the outer taper reference surface.

The bearing bush is arranged in the taper hole of the taper hole center frame 8, is made of babbit metal materials, has high abrasion resistance and cannot damage the outer surface of a workpiece.

The utility model discloses when using, remove former lathe's knife rest and chuck, install main shaft slewing mechanism, hydraulic pressure centre frame 7, taper hole centre frame 8 and bistrique mechanism in proper order on the lathe, the installation is simple, and the adjustment is convenient, and the clamping is reliable and stable simultaneously, and the precision is high, and is stand wear and tear, has improved work efficiency, the cost is reduced.

While the preferred embodiments of the present invention have been described, it should be understood that various changes and modifications may be made therein by those skilled in the art without departing from the general concept of the invention, and such changes and modifications should be construed as within the scope of the invention.

Claims

1. The utility model provides a main shaft hole grinding machine tool, includes lathe (1), is equipped with main shaft slewing mechanism on lathe (1), and main shaft slewing mechanism includes headstock (2) and top, and headstock (2) are connected through bearing and lathe (1) rotation, and headstock (2) are connected with motor, its characterized in that: a center frame mechanism and a grinding head mechanism are sequentially arranged on a machine tool (1) on the other side of a main shaft rotating mechanism, the center frame mechanism comprises a hydraulic center frame (7) and a taper hole center frame (8), clamping mechanisms used for fixing and supporting a main shaft workpiece (13) are arranged on the hydraulic center frame (7) and the taper hole center frame (8), the clamping centers of the clamping mechanisms of the hydraulic center frame (7) coincide with the center of an excircle reference surface of the main shaft workpiece (13), an inner hole of each clamping mechanism of the taper hole center frame (8) is of a conical structure, the inner hole taper is the same as that of the main shaft workpiece (13), a bearing bush is arranged on the taper hole center frame (8), and the bearing bush is a babbit alloy bearing bush.

2. The spindle bore grinding machine of claim 1, wherein: the center is fixed on one side of the head frame (2), the center comprises a flat center (11) and a taper center (6) fixed with one end of the flat center (11) through a connecting sleeve (4), a driving lever (3) used for driving the connecting sleeve (4) to rotate is fixed on the head frame (2), three or more tension springs (5) are uniformly fixed on one side of the head frame (2) around the flat center (11), and the other ends of the tension springs (5) are fixedly connected with the connecting sleeve (4).

3. The spindle bore grinding machine of claim 1, wherein: the grinding head mechanism comprises a saddle (10) and a grinding head (9) rotatably connected with the saddle (10), the saddle (10) is slidably connected with the machine tool (1), and the saddle (10) and the grinding head (9) are both connected with a motor.

4. The spindle bore grinding machine of claim 1, wherein: the clamping centers of the hydraulic center frame (7) and the taper hole center frame (8) are on the same horizontal line.