TWI635924B - Workbench horizontal error compensation device - Google Patents

Abstract

The invention is disposed between the base and the bottom of the intermediate seat along the X-axis and is provided with two slide rail assemblies, and drives the intermediate seat with a transmission assembly to slide along the two slide rail assemblies, characterized in that: the intermediary seat An inclined top surface having an angle with the Y axis, and a first pivot portion is perpendicularly disposed on the inclined top surface; and a height matching the inclined top surface is formed between the sliding rail assembly and the other sliding rail assembly The table has a sloped bottom surface matching the inclined top surface, and a second pivot portion matched with the first pivot portion, so that the table can be rotated by the first pivot portion and the second pivot portion For switching the contact position between the inclined bottom surface and the inclined top surface, the differential compensation compensates the level of the reference surface of the worktable, and then controls whether the worktable is fastened to the intermediate seat through a fixed unit system. In this way, the horizontal error compensation problem of the reference plane can be solved in situ to ensure the machining accuracy of the workpiece.

Description

Workbench horizontal error compensation device for machine tool

The invention provides a novel machine tool which can compensate the horizontal error of the worktable in situ without going back to the factory for overhaul.

Press Machine tool is a power machinery manufacturing device with a table and a tool. The bottom of the table and the machine tool are provided with a slide rail assembly that can move relative to each other, and the top of the table is more capable of fixing the workpiece. The reference surface then creates a relative motion between the workpiece and the tool, allowing the tool to be machined to the desired shape, size and surface accuracy.

However, after the machine tool has been in operation for a period of time, the table will lose its level of the reference surface at the factory due to multiple interactions such as cutting stress, material stress, and rail assembly wear, etc., resulting in the workpiece being machined. There are parallelism and perpendicularity errors, and the precision machining requirements cannot be met. Therefore, the level of the reference surface of the workbench is maintained, and the machining accuracy of the tool is not high.

Generally, when the horizontal error occurs on the workbench, it cannot be compensated locally, but it must be returned to the factory for overhaul. After removing the workbench, grinding and artificial shovel, the level of the workbench can be compensated. Error compensation is quite time-consuming and labor-intensive. In addition to the cost, the suspension of production will cause troubles in the production capacity of the industry.

In view of the above-mentioned lack of the machine tool, the inventor is actively working hard. Research, after many trials and improvements, finally developed the invention capable of compensating for the horizontal error of the workbench in situ.

The invention provides a workbench horizontal error compensation device for a machine tool, the main contents of which are:

1. The present invention is mainly provided with an intermediate seat under the workbench, the intermediate seat has an inclined top surface at an angle with the Y axis, and a first pivot portion is vertically disposed on the inclined top surface, and the work platform has an oblique a matching bottom surface of the top surface, and a second pivot portion matching the first pivot portion, so that the table is pivoted to the bottom surface of the first pivot portion for switching the contact position between the oblique bottom surface and the inclined top surface俾Differentially compensates the level of the benchmark surface of the workbench, so that it can overcome many of the problems of the traditional overhaul.

2. The intermediate seat of the present invention is mounted on the base of the machine tool through the two slide rail assemblies so as to be movable along the X-axis, so that an assembly of the slide rail assembly and the other slide rail assembly is formed and interposed. The angle of the inclined top surface matches the height drop, and the first and second pivotal systems are respectively located between the two slide rail assemblies. The overall oblique arrangement can effectively increase the load of the worktable and can withstand The processing stress can eliminate the backlash and improve the processing precision.

In order to provide a further understanding of the structure, features and other objects of the present invention, the detailed description of the preferred embodiments is as follows:

10‧‧‧ Pedestal

11‧‧‧ column

12‧‧‧Processing head

20‧‧‧Intermediate seat

21‧‧‧ oblique top surface

22‧‧‧Retractable shield

23‧‧‧ First pivot

24‧‧‧ hole

A‧‧‧ angle

30A, 30B‧‧‧ slide rail assembly

40‧‧‧Transmission assembly

41‧‧‧Servo motor

42‧‧‧ lead screw

50‧‧‧Workbench

51‧‧‧ datum

52‧‧‧ oblique bottom

53‧‧‧The second pivot

54‧‧‧ adjustment seat

55‧‧‧Adjusting bolts

B‧‧‧ positive angle

C‧‧‧negative angle

60‧‧‧Fixed unit

61‧‧‧Lock seat

62‧‧‧Keyhole

63‧‧‧ screw holes

64‧‧‧ fixing bolts

First Figure: A perspective view of the present invention.

The second figure is a perspective view of the other direction after the removal of the telescopic shield of the present invention.

Third Figure: is a schematic view of the left side of the present invention.

Figure 4 is a perspective view of the intermediary of the present invention.

Figure 5 is a bottom view of the workbench of the present invention.

Fig. 6 is a schematic view showing that the reference surface of the workbench of the present invention is maintained in a horizontal state.

Figure 7 is a schematic diagram of the clockwise rotation of the workbench for adjusting the level of the reference plane.

Figure 8 is a schematic diagram of the counterclockwise rotating table of the present invention for adjusting the level of the reference plane.

Referring to the first to eighth figures, the present invention at least includes: a base 10 at the bottom of the machine tool, a column 11 extending upwardly from one side thereof, and the column 11 is provided with a device cutter above the base 10 ( The processing head 12 of the grinding wheel); an intermediate seat 20 mounted on the base 10, as shown in the third figure, the intermediate seat 20 has an inclined top surface 21 at an angle A to the Y-axis, and is inclined A telescopic shield 22 covering the two ends of the base 10 is externally disposed on the two sides of the surface 21, and the first pivot portion 23 is vertically disposed in the center of the inclined top surface 21, and the first pivot portion 23 is a first The ring block of the inclined top surface 21 is protruded, the central axis of the ring block is perpendicular to the inclined top surface 21, and a plurality of countersunk holes 24 are provided for providing bolts (not shown) to be directly locked to the inclined Top surface 21; Two slide rail assemblies 30A, 30B are symmetrically disposed between the base 10 and the bottom of the intermediate base 20, and are disposed in parallel with each other along the X-axis, and the first pivot portion 23 is coupled to the second slide rail. Between the assemblies 30A and 30B, a height difference between the rail assembly 30A and the other rail assembly 30B can be formed to match the angle A of the inclined top surface 21, and the two rail assemblies 30A and 30B can be respectively used. The linear slide rail shown in the third figure may be a conventional V-shaped or other shaped groove and a slider fit; a transmission assembly 40 is mounted between the base 10 and the intermediate seat 20, The X-axis is slid on the base 20 along the two slide rail assemblies 30A, 30B. The transmission assembly 40 is composed of a servo motor 41, a lead screw 42 and a nut (not shown). The servo motor 41 is mounted between the base 10 and the two slide rail assemblies 30A, 30B, and the lead screw 42 is pivotally disposed between the two slide rail assemblies 30A, 30B so that it can be servoed. The motor 41 is driven to rotate, and a screw nut (not shown) is screwed on the lead screw 42. The nut is fixed to the bottom of the intermediate seat 20, so that the intermediate seat 20 can be driven to X-axis sliding. A work table 50 has a horizontal reference surface 51 at its top end and a sloped bottom surface 52 matching the inclined top surface 21 at the bottom end. As shown in the fifth figure, the inclined bottom surface 52 is centrally provided with the first pivot portion 23. The second pivot portion 53 is a blind hole that is pivoted with the ring block, so that the table 50 can be rotated by the first pivot portion 23 and the second pivot portion 53. For switching the relative contact position between the inclined bottom surface 52 and the inclined top surface 21, specifically, as shown in the seventh figure Rotating the table 50 clockwise causes the reference surface 51 to produce a positive angle B change. As shown in the eighth figure, the counterclockwise rotation of the table 50 causes the reference surface 51 to change at a negative angle C, through which the clockwise or By rotating the table 50 counterclockwise, the error of the reference surface 51 can be easily compensated. Therefore, the machine tool referred to in the present invention does not need to go back to the factory to overhaul the error, but can solve the problem on the spot; In the present invention, an adjusting seat 54 can be mounted on the bottom edge of the worktable 51. The adjusting seat 54 is screwed with an adjusting bolt 55 abutting the intermediate seat 20, so that the rotating angle of the working table 50 can be finely adjusted by rotating the adjusting bolt 55. And a fixing unit 60 for controlling whether the worktable 50 is fastened to the intermediate seat 20, and is mainly provided with a lock seat 61 having a plurality of lock holes 62 on both sides of the bottom edge of the work table 50, and the intermediate seat 20 The screw hole 63 is matched with the locking hole 62 so as to be screwed into the opposite screw hole 63 through the fixing bolt 64 through the locking hole 62 for fastening the table 50 to the intermediate seat 20, which is specifically described herein. a clearance is maintained between the locking hole 62 and the fixing bolt 64 to enable it to 51 used for compensating the reference plane.

It is known from the above description that the present invention has at least the following technical features:

In the present invention, an intermediate seat 20 is further disposed under the workbench 50, and the intermediate seat 20 has an inclined top surface 21 at an angle with the Y-axis, and a first pivot portion 23 is vertically disposed on the inclined top surface 21. The table 50 has an inclined bottom surface 52 matching the inclined top surface 21, and a second pivot portion 53 matching the first pivot portion 23, so that the table 50 is centered on the first and second pivot portions 23, 53. The inclined bottom surface 52 is configured to switch the contact between the inclined bottom surface 52 and the inclined top surface 21 The position, the differential compensation of the level of the reference surface 51 of the worktable 50, can overcome the many problems of the traditional overhaul.

2. The intermediate frame 20 of the present invention is mounted on the base 10 of the machine tool through the two slide rail assemblies 30A, 30B, so that the intermediate seat 20 can be moved along the X-axis, so that one slide rail assembly 30A and another slide A height drop is formed between the rail assemblies 30B and an angle A matching the angled top surface 21 of the intermediate seat 20, and the first and second pivot portions 23, 53 are respectively centered between the two slide rail assemblies 30A, 30B. The overall oblique arrangement can effectively increase the load of the worktable 50 and the processing stress that can be withstood, and can further improve the processing precision of the processing backlash.

It is known from the above description that the overall structural configuration of the present invention is novel and can improve the inadequacy of the existing workbench to compensate for the level of the reference plane. It is indeed a high-invention in the technical concept, and should meet the requirements of the patent application. submit application. However, the above description is only a preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the present invention. Within the scope.

Claims (8)

A work level error compensation device for a machine tool includes at least: a base; an intermediate seat mounted on the base, having an inclined top surface at an angle to the Y axis, and perpendicular to the inclined top surface The first pivot portion is provided; the two slide rail assemblies are symmetrically disposed between the base and the bottom of the intermediate seat, and are arranged in parallel with each other along the X-axis, so that one slide rail assembly and the other slide rail are arranged The assembly can form a height difference matching the angle of the inclined top surface, and the intermediate seat can be driven by a transmission assembly for sliding along the X-axis of the two slide assembly; The top end has a horizontal reference surface, and the bottom end has a sloped bottom surface matching the inclined top surface, and the inclined bottom surface is provided with a second pivot portion combined with the first pivot portion, so that the first pivot portion and the second pivot portion of the table are The center of the spiral inclined bottom surface is used to switch the contact position between the inclined bottom surface and the inclined top surface, the differential compensation of the level of the reference surface; and a fixing unit for controlling whether the worktable is fastened to the intermediate seat. The work level error compensation device of the machine tool according to claim 1, wherein the first pivot portion is vertically disposed at a center of the inclined top surface, and the first pivot portion is disposed between the two slide rail assemblies. And a second pivot portion combined with the first pivot portion is disposed at the center of the inclined bottom surface. The workbench horizontal error compensating device of the machine tool according to claim 1 or 2, wherein the first pivot portion of the spacer is a ring block protruding from the inclined top surface, and the central axis of the ring block is perpendicular to the inclined top surface. The second pivot of the workbench is a blind hole that is pivoted to the ring block. The horizontal error compensation device for the workbench of the machine tool according to claim 3, wherein the ring block is provided with a plurality of countersunk holes for providing bolt bolting and directly locking on the inclined top surface. The workbench horizontal error compensation device of the machine tool according to claim 1 or 2, wherein an adjustment seat is mounted on the bottom edge of the workbench, and the adjustment seat is screwed with an adjustment of the abutment intermediate seat. Bolts allow the adjustment bolt to provide a fine-tuning table rotation angle for use. The horizontal error compensation device for the workbench of the machine tool according to claim 1 or 2, wherein the fixing unit is respectively provided with a lock seat having a plurality of lock holes on both sides of the bottom edge of the workbench, and the intermediate seat is provided with a lock hole. The matching screw holes are screwed into the opposite screw holes through the fixing bolts through the locking holes for fastening the table to the intermediate seat, and a clearance is maintained between the locking holes and the fixing bolts. The workbench horizontal error compensation device of the machine tool according to claim 1 or 2, wherein the two slide rail assemblies adopt linear slide rails respectively. The work level error compensation device of the machine tool according to claim 1 or 2, wherein the transmission assembly is composed of a servo motor, a lead screw and a nut, and the servo motor is installed between the base and the second slide assembly. As for the lead screw, it is pivoted between the two slide rail assemblies so as to be driven by the servo motor to rotate, and the lead screw is screwed on the lead screw, and the nut is fixed on the bottom of the intermediate seat.