Cylindrical grinding machine with on-machine measurement function

Abstract

The cylindrical grinding machine with the on-machine measurement function comprises a machine body, a guide rail assembly is arranged on the machine body, and a supporting inclined face facing the rear upper portion is formed at the top of the guide rail assembly. An inclined bottom plate of the installation seat is connected to the supporting inclined face in an attached mode, a buckling plate of the installation seat is buckled to the upper front end of the guide rail assembly, a fixing bolt is arranged in a clamping groove of the installation seat and inclines forwards, and the head of the fixing bolt is buckled to a hook groove. The upper portion of the fixing bolt is in threaded connection with a nut, the nut abuts against the upper side of the upper end edge of the clamping groove, a cylinder body of the oil cylinder is installed on the horizontal top plate, and the outer diameter measuring unit is arranged on the piston rod assembly. According to the utility model, the cylindrical grinding machine can be upgraded and transformed to have an on-machine measurement function, and the working efficiency in the production process of shaft workpieces can be improved. And the oil cylinder is arranged as a guide oil cylinder, so that the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of cylindrical grinders, in particular to a cylindrical grinder with an on-machine measurement function. Background Art

[0002] Currently, external cylindrical grinding machines perform rough grinding, fine grinding, and polishing on shaft workpieces. This requires manual measurement of the shaft workpiece's outer diameter during machining, and the grinder's feed settings must be adjusted accordingly based on changes in the shaft workpiece's outer diameter. Existing external diameter measuring units are used to measure the outer diameter of shaft workpieces. For example, see Chinese Utility Model Publication No. CN112355880B, "A Cylindrical Honing Machine with On-Machine Measurement Function and Measurement Method." The inclusion of an external diameter measuring unit can improve work efficiency. However, the guide rail support surfaces of some external cylindrical grinding machines are positioned toward the rear and upward. The headstock and tailstock of the external cylindrical grinding machine slide on the guide rails, and the headstock and tailstock assembly clamps the shaft workpiece. When the grinding wheel grinds the shaft workpiece, the grinding wheel applies a forward thrust to the shaft workpiece, which the guide rail support surfaces effectively support. However, these inclined guide rails make it difficult to install an external diameter measuring unit, hindering upgrades and modifications to these external cylindrical grinding machines, and thus hindering work efficiency. Therefore, it is necessary to develop an external cylindrical grinding machine equipped with an external diameter measuring unit. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a cylindrical grinding machine with an on-machine measurement function, which is beneficial to improving the working efficiency in the production process of shaft workpieces.

[0004] The purpose of this utility model is achieved through the following technical solutions.

[0005] The utility model discloses a cylindrical grinding machine with an on-machine measurement function, comprising a bed, a guide rail assembly being provided on the bed, a support inclined surface facing upward and rearward being formed on the top of the guide rail assembly, wherein a hook groove is formed on the upper portion of the guide rail assembly; the utility model also comprises a mounting seat, an oil cylinder and an outer diameter measuring unit arranged in front of the grinding wheel, the mounting seat being provided with a horizontal top plate, a gusset plate and an inclined bottom plate, the inclined bottom plate being abutted against and connected to the support inclined surface, the gusset plate being buckled with the front upper end of the guide rail assembly, the mounting seat being formed with a card slot, a fixing bolt being provided in the card slot, and the fixing bolt being arranged to be inclined forward. The lower end of the fixing bolt is formed with a head, the head is buckled with the hook groove, the upper part of the fixing bolt is threaded with a nut, and the nut is affixed to the upper side of the upper end edge of the slot. The oil cylinder is provided with a cylinder body and a piston rod assembly, the cylinder body is installed on the horizontal top plate, the outer diameter measuring unit is provided on the piston rod assembly, and the oil cylinder can drive the outer diameter measuring unit to move forward and backward; the oil cylinder is provided as a guide oil cylinder, and a bracket is installed at the end of the piston rod assembly. The outer diameter measuring unit is provided above the oil cylinder, and the outer diameter measuring unit is installed on the bracket.

[0006] Preferably, the outer diameter measuring unit includes a measuring pendulum and a measuring pin, a clamping portion is formed at the rear end of the measuring pendulum, a clamping hole and a notch are formed on the clamping portion, one end of the notch is connected to the clamping hole, and the other end corresponding to the notch passes through the clamping portion, the measuring pin is formed with a screw portion, the screw portion is threadedly connected to the clamping hole, a screw hole and a mounting hole are formed in the clamping portion, the screw hole and the mounting hole are respectively located on both sides of the notch, a clamping screw is provided in the mounting hole, and the clamping screw is threadedly connected to the screw hole.

[0007] Preferably, a groove is formed at one end of the measuring nail, and a carbide contact for contacting the shaft is adapted to be provided in the groove.

[0008] Preferably, the outer end of the cemented carbide contact is formed with a spherical surface.

[0009] Preferably, the other end of the measuring pin is formed with a hexagonal head.

[0010] Compared with the prior art, the present invention has the following beneficial effects: by providing a mounting base, a cylinder, and an outer diameter measuring unit arranged in front of the grinding wheel, the inclined bottom plate of the mounting base is abutted against the supporting inclined surface, the buckle plate of the mounting base is buckled with the front upper end of the guide rail assembly, a fixing bolt is provided in the mounting base's slot, the fixing bolt is tilted forward, the head of the fixing bolt is buckled with the hook groove, and a nut is screwed onto the upper part of the fixing bolt, the nut abuts against the upper side of the upper end edge of the slot, the cylinder body of the cylinder is mounted on the horizontal top plate, and the outer diameter measuring unit is arranged on the piston rod assembly. This facilitates the upgrading and transformation of the external cylindrical grinder to have an on-machine measurement function, thereby improving the work efficiency in the production process of shaft workpieces. By configuring the cylinder as a guide cylinder, measurement accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a left-side structural schematic diagram of the cylindrical grinder with on-machine measurement function of the present invention.

[0012] Figure 2 for Figure 1 Schematic diagram of the local structure.

[0013] Figure 3 The diagram is a top view of the structure of the measuring pendulum, measuring nail and clamping screw combination of the present invention.

[0014] Figure 4 It is a structural schematic diagram of the clamping part of the present utility model.

[0015] Figure 5 This is a schematic structural diagram of the measuring nail of the present utility model.

[0016] Figure 6 This is a structural schematic diagram of the measuring pin with the carbide contact removed according to the present invention.

[0017] Figure 7 This is a left-side structural schematic diagram of the assembly of the mounting base and guide rail assembly of the utility model.

[0018] Figure 8 It is a schematic diagram of the top structure of the mounting base of the utility model.

[0019] Explanation of reference numerals: bed 1; guide rail assembly 11; supporting inclined surface 110; hook groove 111; grinding wheel 2; outer diameter measuring unit 3; measuring unit body 30; measuring rocker arm 31; clamping portion 311; clamping hole 3111; notch 3112; screw hole 3113; mounting hole 3114; measuring pin 32; screw portion 320; groove 3201; carbide contact 321; hexagonal head 322; clamping screw 33; mounting seat 4; horizontal top plate 41; buckle plate 42; inclined bottom plate 43; side plate 44; bolt mounting block 45; fixing bolt 46; head 461; nut 462; slot 401; oil cylinder 5; cylinder body 51; piston rod assembly 52; bracket 6; shaft 99. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The cylindrical grinding machine with on-machine measuring function of the present invention is as follows: Figure 1 and Figure 7 As shown, the bed 1 includes a bed 1, a guide rail assembly 11 is provided on the bed 1, a support slope 110 facing upward and backward is formed on the top of the guide rail assembly 11, and a hook groove 111 is formed on the upper part of the guide rail assembly 11. The hook groove 111 is provided along the extension direction of the guide rail assembly 11, that is, the hook groove 111 extends in the left and right directions. Figure 1 and Figure 7 As shown, the cylindrical grinding machine of the present invention further includes a mounting base 4, a cylinder 5 and an outer diameter measuring unit 3 arranged in front of the grinding wheel 2; Figure 7 and Figure 8 As shown, the mounting seat 4 is provided with a horizontal top plate 41, a buckle plate 42 and an inclined bottom plate 43. The inclined bottom plate 43 is abutted and connected to the supporting inclined surface 110. The buckle plate 42 is buckled with the front upper end of the guide rail assembly 11. The mounting seat 4 is formed with a slot 401. A fixing bolt 46 is provided in the slot 401. The fixing bolt 46 is tilted forward. The lower end of the fixing bolt 46 is formed with a head 461. The head 461 is buckled with the hook groove 111. The upper part of the fixing bolt 46 is screwed with a nut 462. The nut 462 is abutted against the upper side of the upper end edge of the slot 401. More specifically, the mounting seat 4 is provided with a side plate 44. The side plate 44 is welded between the horizontal top plate 41 and the inclined bottom plate 43. The upper end of the buckle plate 42 is welded to the front end of the horizontal top plate 41. A bolt mounting block 45 is welded to the inclined bottom plate 43. The slot 401 is formed in the bolt mounting block 45, and the slot 401 passes through the inclined bottom plate 43. Figure 8 As shown, the slot 401 extends leftward through the mounting seat 4 .

[0022] During the installation process of the mounting base 4, the mounting base 4 is first placed on the supporting inclined surface 110, and then the front part of the head 461 of the fixing bolt 46 is inserted into the hook groove 111, and then the fixing bolt 46 is moved to the right so that the fixing bolt 46 is clamped into the clamping groove 401, and the nut 462 is installed on the upper part of the fixing bolt 46, and the mounting nut 462 is tightened to move the fixing bolt 46 upward, so that the head 461 can be buckled into the hook groove 111. Since the fixing bolt 46 is tilted forward and the supporting inclined surface 110 is set toward the rear and upward, the tightening of the nut 462 This causes the mounting base 4 to have a tendency to slide backward along the support slope 110. However, since the buckle plate 42 is engaged with the front upper end of the guide rail assembly 11, that is, the front upper end of the guide rail assembly 11 blocks the buckle plate 42 from moving backward, the mounting base 4 can be prevented from shifting forward and backward, so that the mounting base 4 is firmly installed on the guide rail assembly 11. The structure of the card slot 401 is provided to facilitate the rapid installation of the fixing bolt 462; the head 461 can be square, and the side of the head 461 is against the inner wall of the hook slot 111, which can prevent the fixing bolt 46 and the guide rail assembly 11 from rotating relative to each other. Figure 1 As shown, the oil cylinder 5 comprises a cylinder body 51 and a piston rod assembly 52. ​​The cylinder body 51 is mounted on the horizontal top plate 41, and the outer diameter measuring unit 3 is mounted on the piston rod assembly 52. ​​The oil cylinder 5 can drive the outer diameter measuring unit 3 to move forward and backward. Since the horizontal top plate 41 is horizontally arranged, it is convenient for the piston rod assembly 52 to be arranged to move horizontally forward and backward, so that the outer diameter measuring unit 3 can move horizontally forward and backward, as shown in FIG. Figure 1 and Figure 2 As shown, since the center of rotation of the grinding wheel 2 is roughly arranged at the same height as the axis of the shaft 99, the horizontal forward and backward movement of the outer diameter measuring unit 3 does not easily cause the measuring pendulum 31 of the outer diameter measuring unit 3 to hit the grinding wheel 2. When the outer diameter measuring unit 3 needs to be moved, the nut 462 is first loosened, and then the mounting base 4 can be moved left and right to adjust the position, and the head 461 of the fixing bolt 46 can slide in the hook groove 111. By providing the above-mentioned mounting base 4, it is convenient to reasonably install and arrange the outer diameter measuring unit 3, which is conducive to upgrading the external cylindrical grinder to have an on-machine measurement function, and is conducive to improving the work efficiency in the production process of shaft workpieces. The mounting base 4 can be arranged between the headstock and the tailstock of the external cylindrical grinder.

[0023] Furthermore, the oil cylinder 5 is configured as a guide oil cylinder, that is, the oil cylinder 5 is provided with a guide structure for guiding the piston rod assembly 52, that is, the piston rod assembly 52 can only move straight forward and backward, avoiding the need to set up a complex external guide structure; for example, the guide oil cylinder can refer to the Chinese invention patent publication number CN105422543B "A built-in guide oil cylinder", the Chinese invention patent publication number CN105402194B "A built-in guide oil cylinder" or the Chinese utility model patent publication number CN202926749U "Short stroke precision guide oil cylinder". Figure 1As shown, the end of the piston rod assembly 52 is mounted with a bracket 6 through corresponding screws, and the outer diameter measuring unit 3 is provided above the oil cylinder 5, and the outer diameter measuring unit 3 is mounted on the bracket 6. Specifically, as shown in FIG. Figure 1 As shown, the outer diameter measuring unit 3 includes a measuring unit body 30 and a measuring pendulum 31. The front end of the housing of the measuring unit body 30 is attached to a bracket 6 via corresponding fasteners, allowing the outer diameter measuring unit 3 to move only linearly forward and backward. The final position of the outer diameter measuring unit 3's travel is the working position, and the outer diameter measuring unit 3 can be moved forward and away from the working position by the piston rod assembly 52. ​​By configuring the oil cylinder 5 as a guide cylinder, the outer diameter measuring unit 3 cannot swing left or right, thereby improving measurement accuracy. The oil cylinder 5 is connected to the hydraulic station via an electromagnetic reversing valve. Since hydraulic oil is almost incompressible, when the outer diameter measuring unit 3 is in the working position, the piston rod assembly 52 is positioned at the extreme position by the pressure of the hydraulic oil and remains firmly stationary, thereby improving measurement accuracy. If the outer diameter measuring unit 3 is driven by an air cylinder, when the outer diameter measuring unit 3 is in the working position, the air in the cylinder can be significantly compressed, causing the outer diameter measuring unit 3 to vibrate slightly back and forth, which can negatively affect the measurement.

[0024] Furthermore, if Figures 2 to 4 As shown, the outer diameter measuring unit 3 includes a measuring pendulum 31 and a measuring pin 32. The rear end of the measuring pendulum 31 is formed with a clamping portion 311. The clamping portion 311 is formed with a clamping hole 3111 and a notch slit 3112. One end of the notch slit 3112 is connected to the clamping hole 3111, and the other end of the notch slit 3112 passes through the clamping portion 311. The measuring pin 32 is formed with a screw portion 320. The screw portion 320 is threadedly engaged with the clamping hole 3111, that is, the clamping hole 3111 is formed with an internal thread. A screw hole 3113 and a mounting hole 3114 are formed in the clamping portion 311. The screw hole 3113 and the mounting hole 3114 are respectively located on both sides of the notch 3112. A clamping screw 33 is provided in the mounting hole 3114. The clamping screw 33 is screwed into the screw hole 3113. Therefore, when the clamping screw 33 is loosened, the measuring pin 32 can be rotated to adjust the position of the measuring pin 32. When the adjustment is completed, the clamping screw 33 is tightened. The clamping screw 33 narrows the notch 3112, which can shrink the clamping hole 3111 and make the clamping hole 3111 tightly hold the screw rod part 320, thereby preventing the measuring pin 32 from loosening relative to the measuring pendulum 31 during operation.

[0025] Furthermore, if Figure 6 As shown, a groove 3201 is formed at one end of the measuring pin 32. The groove 3201 is specifically formed at one end of the screw portion 320. Figure 5As shown, a carbide contact 321 for contacting the shaft 99 is adapted to be provided in the groove 3201. The inner end of the carbide contact 321 abuts against the bottom of the groove 3201, and the outer end of the carbide contact 321 protrudes from the screw portion 320. Figure 2 As shown, the carbide contact 321 actually contacts the measured outer cylindrical surface of the shaft 99. Since the carbide has good wear resistance and high hardness, the part of the measuring pin 32 used to contact the shaft 99 is prevented from being easily deformed or worn, which is beneficial to improving measurement accuracy.

[0026] Furthermore, if Figure 5 As shown, the outer end of the carbide contact 321 is formed with a spherical surface. In other words, the end of the carbide contact 321 protruding from the screw portion 320 is formed with a spherical surface, that is, the above-mentioned spherical surface is used to contact the surface of the shaft 99, which is conducive to making the measuring pin 32 and the shaft 99 in single-point contact, avoiding unstable measurement values, and thus helping to improve measurement accuracy.

[0027] Furthermore, if Figure 5 As shown, the other end corresponding to the measuring pin 32 is formed with a hexagonal head 322. Specifically, the other end corresponding to the screw portion 320 is integrally connected to the hexagonal head 322, so that the user can use a wrench to rotate the hexagonal head 322 to drive the measuring pin 32 to adjust its position.

[0028] like Figure 1As shown, the outer diameter measuring unit 3 includes two measuring pendulums 31, and the ends of the two measuring pendulums 31 are respectively provided with measuring pins 32. The measuring pins 32 are perpendicular to the corresponding measuring pendulums 31. The two measuring pins 32 are respectively abutted against the top and the bottom of the shaft 99. The measuring pendulums 31 drive the corresponding measuring pins 32 to press on the shaft 99. For example, the measuring pendulum 31 is driven by a spring to swing toward the shaft 99, that is, the carbide contact 321 is kept against the outer cylindrical surface of the shaft 99. The grinding wheel 2 rotates to grind the rear part of the shaft 99. The shaft 99 is driven to rotate by the headstock of the external cylindrical grinder. The outer diameter of the shaft 99 gradually decreases, and the upper and lower measuring pendulums 31 swing toward the shaft 99. The working principle of the outer diameter measuring unit 3 can be referred to the Chinese utility model patent publication number CN112355880B "A cylindrical honing machine tool with on-machine measurement function and measuring method", or the Chinese utility model patent publication number CN216781468U "A measuring device of an active measuring instrument for a grinder using a flexible bearing", so it will not be described in detail here. The outer diameter measuring unit 3 is equipped with an active measurement controller for grinding. For example, you can refer to the Chinese utility model patent publication number CN208567829U "A grinding active measurement controller based on an industrial control mainboard" or the Chinese invention patent publication number CN103862372B "A grinding active measurement controller based on an industrial control mainboard"; thus, the outer diameter measuring unit 3 measures the size of the shaft 99 on the machine, and transmits its size change to the active measurement controller for grinding at any time, and then the active measurement controller for grinding sends a signal (such as rough grinding, fine grinding, light grinding, to size, etc.) to control the action of the cylindrical grinder. Since the shaft 99 can be measured without stopping the machine, the labor intensity is reduced, the production efficiency is improved, and the scrap rate is reduced.

Claims

1. A cylindrical grinding machine with an on-machine measurement function, comprising a bed (1), a guide rail assembly (11) provided on the bed (1), a top of the guide rail assembly (11) being formed with a support inclined surface (110) facing upward and backward, characterized in that: The guide rail assembly (11) is provided with a hook groove (111) at the upper portion thereof; the guide rail assembly (11) further comprises a mounting seat (4), an oil cylinder (5) and an outer diameter measuring unit (3) arranged in front of the grinding wheel (2); the mounting seat (4) is provided with a horizontal top plate (41), a buckle plate (42) and an inclined bottom plate (43); the inclined bottom plate (43) is abutted against and connected to the supporting inclined surface (110); the buckle plate (42) is buckled with the front upper end of the guide rail assembly (11); the mounting seat (4) is provided with a slot (401); a fixing bolt (46) is provided in the slot (401); the fixing bolt (46) is tilted forward; a head (461) is formed at the lower end of the fixing bolt (46); the head (461) is buckled with the hook groove (1 11), a nut (462) is screwed onto the upper portion of the fixing bolt (46), and the nut (462) is abutted against the upper side of the upper edge of the slot (401); the oil cylinder (5) is provided with a cylinder body (51) and a piston rod assembly (52); the cylinder body (51) is mounted on the horizontal top plate (41); the outer diameter measuring unit (3) is mounted on the piston rod assembly (52); the oil cylinder (5) can drive the outer diameter measuring unit (3) to move forward and backward; the oil cylinder (5) is configured as a guide oil cylinder, and a bracket (6) is mounted on the end of the piston rod assembly (52); the outer diameter measuring unit (3) is located above the oil cylinder (5), and the outer diameter measuring unit (3) is mounted on the bracket (6).

2. The cylindrical grinding machine with on-machine measurement function according to claim 1, characterized in that: The outer diameter measuring unit (3) comprises a measuring pendulum (31) and a measuring pin (32), wherein a clamping portion (311) is formed at the rear end of the measuring pendulum (31), and the clamping portion (311) is formed with a clamping hole (3111) and a notch (3112), one end of the notch (3112) is connected to the clamping hole (3111), and the other end of the notch (3112) passes through the clamping portion (311), and the measuring pin (32) is formed with a A screw portion (320) is adapted to be threadedly connected to the clamping hole (3111); a screw hole (3113) and a mounting hole (3114) are formed in the clamping portion (311); the screw hole (3113) and the mounting hole (3114) are respectively located on both sides of the notch (3112); a clamping screw (33) is provided in the mounting hole (3114); and the clamping screw (33) is threadedly connected to the screw hole (3113).

3. The cylindrical grinding machine with on-machine measurement function according to claim 2, characterized in that: A groove (3201) is formed at one end of the measuring pin (32), and a hard alloy contact (321) for contacting the shaft (99) is adapted to be provided in the groove (3201).

4. The cylindrical grinding machine with on-machine measurement function according to claim 3, characterized in that: The outer end of the hard alloy contact (321) is formed with a spherical surface.

5. The cylindrical grinding machine with on-machine measurement function according to claim 3, characterized in that: The other corresponding end of the measuring pin (32) is formed with a hexagonal head (322).

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