CN101066580A - Cylindrical grinding type surface grinder - Google Patents

Abstract

The present invention discloses one kind of plain grinding machine capable of grinding both plate and shaft and with widened application range. Structurally, the plain grinding machine includes one grinding machine body, one workbench capable of moving in X-direction, two racks set on the workbench, one fixture set on the racks for longitudinal motion for installing shaft workpiece and connected via a driving set to the power set, and one grinding set capable of moving in both Y-direction and Z-direction set over the shaft workpiece.

Description

Cylindrical grinding type surface grinder

technical field

The invention relates to a surface grinder, in particular to an outer cylindrical grinding type surface grinder.

Background technique

Grinding is generally used as the final processing technology for forming precision workpieces. Through grinding, precision workpieces can obtain the required dimensional accuracy and surface finish. In the grinding technology, according to the different shapes of workpieces such as flat plates and shafts, the methods of surface grinding and cylindrical grinding are respectively used, and they need to be processed on the surface grinder and the cylindrical grinder respectively. At present, there is no suitable grinding machine. Cutting technology can process flat and shaft workpieces on one grinding machine at the same time, which limits the processing range of the grinding machine, increases the purchase cost of the grinding machine, increases the production cost of the enterprise, and reduces the market competitiveness of the enterprise.

In the process of ordinary surface grinding and cylindrical grinding, the contact area between the grinding wheel and the workpiece surface is large, which generates a large amount of grinding heat. If it is not cooled in time, the temperature of the surface layer of the workpiece will rise sharply, resulting in a thermally damaged layer, reducing the Workpiece surface quality. Therefore, a large amount of grinding fluid is applied during the grinding process, and the recovery and treatment of grinding fluid is also a difficult problem to be solved.

Contents of the invention

The purpose of the present invention is to solve the current lack of equipment that can process flat and shaft workpieces on one grinding machine, resulting in the small processing range of the grinding machine and high production costs of the enterprise, and to provide a simple structure, easy to use, The cylindrical grinding type surface grinder can use the surface grinder to perform cylindrical grinding on shaft workpieces, thereby broadening the application range of the surface grinder.

To achieve the above object, the present invention adopts the following technical solutions:

A cylindrical grinding type surface grinder, which includes a x-direction movable workbench installed on the grinder body, two supports corresponding to the positions are arranged on the workbench, and a longitudinally moving clamping device is installed on the support, The device is connected with the power device through the transmission device, the shaft workpiece is installed on the clamping device, and the grinding device moving along the y direction and the z direction is arranged above the shaft workpiece.

The clamping device includes screw rods arranged on one side of each bracket and fixed nuts matched with the screw rods, a bearing is installed on the top of one screw rod, and the side of the bearing is supported by the bracket; a clamping mechanism is installed on the top of the other screw rod, and the clamping mechanism and Bearing connection, on the inside of each bearing, there is a horizontally placed, free-rotating thimble, and the two thimbles are matched with the center hole on the end face of the shaft workpiece to drive the shaft workpiece to rotate. One of the thimbles is connected to the transmission device, and the other The thimble is connected with the corresponding clamping mechanism, and the side of the clamping mechanism is supported by the corresponding bracket. At the same time, the clamping mechanism also drives the bearing and the thimble to move horizontally.

The transmission device is a universal coupling transmission mechanism, which is connected with the power device; the power device is an electric motor, which is installed on the workbench.

The transmission mechanism of the universal coupling is connected with the end of the thimble passing through the bearing through a coupling, and a recessed hole is arranged on the base of the lower part of the bearing, and the screw bearing is installed in the recessed hole, and the top end of the screw is connected with the screw bearing.

The clamping mechanism includes a horizontal moving rod and a longitudinal positioning block, the moving rod passes through the longitudinal positioning block horizontally, the two are threaded, and a concave hole is arranged at the bottom of the positioning block, and the screw bearing is installed in the concave hole , the top of the screw rod is connected with the screw rod bearing; the outer end of the moving rod is provided with a handle, the inner end is connected with the bearing seat body of the bearing, and the thimble is connected with the bearing.

The grinding device is a grinding wheel, the outer edge of which keeps in contact with the outer surface of the shaft workpiece.

The diameter range of the shaft workpiece is less than twice the height of the thimble, and the rotation speed is 1000-3000r/min; the rotation speed of the grinding wheel is 500-3000r/min, and the range of each feeding distance along the z-axis is 0.002mm-0.1mm; the working The moving speed of the table along the x-axis direction is 0.01-20m/min.

In the invention, the shaft workpiece is clamped by the thimble of the fixture, fixed on the workbench, and moves with the workbench, and the power of the motor is transmitted to the thimble by using the universal coupling transmission mechanism, and the thimble drives the shaft workpiece to rotate, and the grinding wheel The outer edge grinds the surface of the shaft workpiece. The grinding track can be a point or a line. The axis of the grinding wheel and the axis of the shaft workpiece are not parallel in space, but at a certain angle.

The beneficial effect of the invention is that the cylindrical grinding of shaft parts is carried out by using the surface grinder, thereby widening the processing range of the surface grinder and reducing the purchase cost of the grinder. In this new grinding technology, the contact between the grinding wheel and the shaft workpiece is point contact and line contact, the contact area is small, the heat generated is small, and the heat will be dissipated quickly. Therefore, no grinding fluid or a small amount of grinding fluid can be applied during the grinding process, reducing the amount of grinding fluid and the cost of recycling. Due to the small contact area and the small grinding force, the speed of the grinding wheel can be increased under the condition of constant power of the grinding head motor to achieve high-speed ultra-high-speed grinding of superhard grinding wheels, thereby improving the surface processing quality and processing efficiency of the workpiece , with high economic value and broad market prospects.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view along the direction A of Fig. 1;

Fig. 3 is a cross-sectional view of the thimble, bearing, screw and transmission device connection on the left side bracket in Fig. 1;

Fig. 4 is a cross-sectional view of the connection of the thimble, bearing, screw and clamping mechanism on the right side bracket in Fig. 1 .

Among them, 1. Motor, 2. Universal coupling transmission mechanism, 3. Bracket, 4. Bearing, 5. Thimble, 6. Shaft workpiece, 7. Grinding wheel, 8. Screw, 9. Clamping mechanism, 10. Workbench, 11. fixed nut, 12. shaft coupling, 13. recessed hole, 14. screw bearing, 15. moving rod, 16. positioning block, 17. handle.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

In Fig. 1, a workbench 10 moving in the x direction is installed on the grinder body of the surface grinder, two brackets 3 are installed at the corresponding positions of the workbench 10, and a screw rod 8 and a fixing nut are respectively installed on one side of each bracket 3 11. The two are screwed together, and the lifting movement can be realized by the rotation of the screw rod 8 . A bearing 4 is installed at the top of a screw rod 8 , on which a horizontally placed thimble 5 is arranged, and the thimble 5 is connected with the motor 1 installed on the workbench 10 through a universal shaft coupling transmission mechanism 2 . A clamping mechanism 9 is installed on the top of the other screw rod 8, and this mechanism is connected with the bearing 4, and the thimble 5 placed horizontally is also provided on the bearing 4. The two thimbles 5 are matched with the center hole of the end face of the shaft workpiece 6, and can drive the shaft workpiece 6 to rotate. A grinding wheel 7 moving along the y-direction and z-direction is arranged above the shaft-like workpiece 6 , and its outer edge keeps in contact with the outer surface of the shaft-like workpiece 6 , as shown in FIG. 2 .

Among Fig. 3, the lower base body of bearing 4 is provided with concave hole 13, and screw bearing 14 is installed in concave hole 13, and the top of screw rod 8 is promptly installed in screw bearing 14, can drive bearing 4 to move up and down with it. After passing through the bearing 4, the end of the thimble 5 is connected with the universal coupling transmission mechanism 2 through the coupling 12, and the universal coupling transmission mechanism 2 transmits the motion of the motor 1 to the thimble 5, and through the rotation of the thimble 5, Drive the shaft workpiece 6 to rotate so as to process.

In FIG. 4 , the top end of another screw rod 8 is connected with the clamping mechanism 9 . The clamping mechanism 9 includes a horizontal moving rod 15 and a vertical positioning block 16, the moving rod 15 horizontally passes through the positioning block 16, and the two are threaded. The bottom of positioning block 16 has concave hole 13, screw rod bearing 14 is installed in concave hole 13, and the top of screw rod 8 is promptly installed in screw rod bearing 14, and makes it move up and down with screw rod 8. The outer end of the moving rod 15 has a handle 17 for horizontal movement by rotating the moving rod 15 . The other end of moving bar 15 is then connected with the bearing block body of bearing (4), and thimble 5 is connected with bearing 4.

The using method of the present invention is as follows: put the two supports on the horizontal workbench, rotate the screw, and make the heights of the thimbles on the two supports equal and keep on a horizontal line through measurement. Adjust the relative position of the two brackets so that they can be put into the workpiece, and the line connecting the center of the thimble is parallel to the x-axis direction of the horizontal workbench. The diameter range of the shaft workpiece should not exceed 2 times the height of the thimble. Pre-process the center holes on the two end faces of the shaft workpiece, align the center hole of the shaft workpiece with the thimble, and rotate the clamping mechanism to make the thimble move. Tight shaft workpieces. The grinding wheel moves along the y-axis and the z-axis, so that the outer edge of the grinding wheel is in contact with the outer surface of the shaft-like workpiece. The power of the motor is transmitted to the thimble by the universal coupling transmission mechanism, which drives the shaft workpiece to rotate at a speed of 1000-3000r/min, and the speed of the grinding wheel is 500-3000r/min. The table moves rapidly along the x-axis direction at a speed of 0.01-20m/min, and the grinding wheel feeds along the z-axis, and the range of each feed distance is 0.002mm-0.1mm.

The scope of protection of the present invention includes but is not limited to the above-mentioned embodiments. All adjustments to the technical solutions of the present invention using the technical concept of the present invention and various known technologies are within the scope of protection of the present invention.

Claims (7)

1. A cylindrical grinding type surface grinder, which includes a worktable (10) that is installed on the grinder body to move in the x direction, and is characterized in that: the workbench (10) is provided with two corresponding brackets (3), on the bracket (3), install a clamping device that moves longitudinally, the device is connected with the power unit through the transmission device, the shaft workpiece (6) is installed on the clamping device, and a shaft workpiece (6) is provided above the shaft workpiece (6). Grinding unit with movement in y and z directions. 2. The cylindrical grinding surface grinder according to claim 1, characterized in that: the clamping device includes a screw (8) provided on one side of each support (3) and a fixing nut matched with the screw (8) (11), a bearing (4) is installed on the top of a screw (8), and the side of the bearing (4) is supported by a bracket (3); a clamping mechanism (9) is installed on the top of the other screw (8), and the clamping mechanism Connected with the bearings (4), a horizontally placed, free-rotating thimble (5) is provided on the inner side of each bearing (4), and the two thimbles (5) are matched with the center hole on the end surface of the shaft workpiece (6), and Drive the shaft workpiece (6) to rotate, one of the thimbles (5) is connected to the transmission device, and the other thimble (5) is connected to the corresponding clamping mechanism (9), and the side of the clamping mechanism (9) is supported by the corresponding bracket (3) support, while the clamping mechanism also drives the bearing (4) and the thimble (5) to move horizontally. 3. The cylindrical grinding type surface grinder according to claim 1 or 2, characterized in that: the transmission device is a universal coupling transmission mechanism (2), which is connected with the power device; the power device is an electric motor ( 1), it is installed on the workbench (10). 4. The cylindrical grinding surface grinder according to claim 3, characterized in that: said universal coupling transmission mechanism (2) connects the thimble ( 5) terminal connection, the bearing (4) lower body is provided with recessed hole (13), and screw bearing (14) is installed in the recessed hole (13), and the top of screw rod (8) is connected with screw bearing (14). 5. The cylindrical grinding type surface grinder according to claim 2, characterized in that: the clamping mechanism includes a horizontal moving rod (15) and a longitudinal positioning block (16), and the moving rod (15) is horizontal Through the longitudinal positioning block (16), the two are threaded, and the bottom of the positioning block (16) is provided with a concave hole (13), and the screw bearing (14) is installed in the concave hole (13), and the screw rod (8) The top of the top is connected with the screw bearing (14); the outboard end of the moving rod (15) is provided with a handle (17), the inboard end is connected with the bearing seat body of the bearing (4), and the thimble (5) is connected with the bearing (4). 6. The cylindrical grinding surface grinder according to claim 1, characterized in that: said grinding device is a grinding wheel (7), the outer edge of which is kept in contact with the outer surface of the shaft workpiece (6). 7. The cylindrical grinding surface grinder according to claim 1, 2 or 6, characterized in that: the diameter range of the shaft workpiece (6) is less than twice the height of the thimble (5), and the rotation speed is 1000- 3000r/min; the rotational speed of the grinding wheel (7) is 500-3000r/min, and the range of each feeding distance along the z-axis is 0.002mm-0.1mm; the movement speed of the worktable (10) along the x-axis direction is 0.01-20m/min .

Images