Adjustable machine tool workbench supporting mechanism

Abstract

The utility model relates to the technical field of machine tools, in particular to an adjustable machine tool workbench supporting mechanism. The device mainly comprises a cylindrical shell, a supporting force adjusting assembly, an upper piston, a cylindrical spiral compression spring, a lower piston and the like. The adjustable machine tool working table supporting mechanism is installed below a machine tool working table, a lower idler wheel assembly rolls on a machine tool body rail, an adjusting bolt is screwed in or screwed out, a lower wedge block moves upwards or downwards along an inclined face, an upper piston is driven to move upwards or downwards by a certain distance, the height of a cylindrical spiral compression spring is changed, and therefore the machine tool working table is supported. And after adjustment is finished, the locking nut is fastened to prevent the adjusting bolt from loosening, and the constant supporting force can be kept. By the adoption of the adjustable machine tool workbench supporting mechanism, the rigidity of a machine tool is improved, the bearing capacity of the machine tool workbench is greatly improved, and the applicability of the machine tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to an adjustable machine tool workbench supporting mechanism. Background Art

[0002] The workbench is an important part of the machine tool, and its main function is to place the workpiece for processing. In order to ensure that the machine tool can process wider and larger workpieces and improve the utilization rate of a machine tool, customers are increasingly inclined to purchase machine tool products equipped with a widened workbench.

[0003] The cantilever parts on both sides of the widened workbench are prone to insufficient rigidity and deformation, which affects the processing accuracy and may also produce vibration marks on the workpiece processing surface. To solve this problem, the general method is to increase the number of linear rails from 2 to 4 to support the movement of the X-axis of the machine tool workbench. This not only increases the production cost, but also makes assembly more difficult to ensure the parallelism of the 4 linear rails. In addition, when the workbench carries a heavy workpiece, the limited carrying capacity of the linear rail will reduce the life of the linear rail, affect the accuracy, and severely limit the weight of the workpiece processed by the machine tool. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the cantilever parts on both sides of the widened workbench are prone to lack of rigidity and deformation, which affects the processing accuracy and may also produce vibration marks on the workpiece processing surface. In view of this, it is necessary to design a mechanism that can not only improve the rigidity and bearing capacity of the workbench, but also effectively control the cost.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an adjustable machine tool worktable support mechanism, including a cylindrical shell, the cylindrical shell is fixed under the worktable by a connecting plate, a support force adjustment component is provided above the cylindrical shell, an upper piston, a cylindrical helical compression spring and a lower piston are provided below the support force adjustment component, and a roller assembly is installed at the bottom of the lower piston and moves along the machine tool bed.

[0006] As a preferred technical solution of the utility model, the supporting force adjustment assembly includes an upper wedge block, a lower wedge block, an adjusting bolt, and a locking nut. The adjusting bolt is installed in a threaded hole on the outer wall of the cylindrical shell, the locking nut is installed on the adjusting bolt, and the upper wedge block and the lower wedge block are arranged inside the cylindrical shell.

[0007] As a preferred technical solution of the utility model, a grease storage groove is provided inside the upper wedge block.

[0008] As a preferred technical solution of the utility model, the roller assembly includes a bearing wheel, a shaft, and a pin. The bearing wheel is installed on both sides of the shaft, and the pin is used to fix the shaft.

[0009] As a preferred technical solution of the utility model, two front and rear scrapers are provided at the bottom of the cylindrical shell.

[0010] The beneficial effects of the utility model are as follows: by using an adjustable machine tool worktable support mechanism, the machine tool can continue to use the original 2-line rail design after increasing the width of the worktable, without the need to install 4 line rails, and the traditional classic layout of the machine tool worktable and bed is slightly changed, which ensures the reliability of the machine tool, saves half of the X-axis line rail procurement cost, and also saves various costs such as casting guide surface finishing and guide rail parallelism assembly time. At the same time, the adjustable machine tool worktable support mechanism can adjust the upward support force to offset the deformation of the worktable caused by the gravity of heavy workpieces, improve the rigidity of the machine tool, and greatly improve the load-bearing capacity of the machine tool worktable, increasing the applicability of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model.

[0012] Figure 2 It is a side view of the utility model.

[0013] Figure 3 yes Figure 1 AA line section view of the main view.

[0014] Figure 4 It is an angle schematic diagram of the utility model.

[0015] Figure 5 It is a schematic diagram of the installation of the utility model on a machine tool.

[0016] Figure 6 yes Figure 1 Cross-sectional view of the roller assembly along line BB in the main view.

[0017] In the figure: 1. cylindrical shell; 2. supporting force adjustment assembly; 21. upper wedge block; 22. lower wedge block; 23. adjusting bolt; 24. locking nut; 3. upper piston; 4. cylindrical helical compression spring; 5. lower piston; 6. roller assembly; 61. bearing wheel; 62. shaft; 63. pin; 7. connecting plate; 8. scraper. DETAILED DESCRIPTION

[0018] Now the utility model will be further described in detail with reference to the accompanying drawings and embodiments.

[0019] Combined with Figure 1-6As shown, an adjustable machine tool worktable support mechanism includes a cylindrical shell 1, which is fixed to the bottom of the worktable by a connecting plate 7. A support force adjustment component 2 is provided at the upper part of the inside of the cylindrical shell 1, and an upper piston 3, a cylindrical helical compression spring 4 and a lower piston 5 are provided below the support force adjustment component 2. The upper piston 3 can move up and down in the cylindrical shell 1 to change the compression height of the cylindrical helical compression spring 4. A lower piston 5 is provided below the cylindrical helical compression spring 4, and a roller assembly 6 is installed at the bottom of the lower piston 5 and moves along the machine tool bed.

[0020] The supporting force adjustment assembly 2 includes an upper wedge block 21, a lower wedge block 22, an adjusting bolt 23, and a locking nut 24. The adjusting bolt 23 is installed in a threaded hole on the outer wall of the cylindrical shell 1, and the locking nut 24 is installed on the adjusting bolt 23. The upper wedge block 21 and the lower wedge block 22 are arranged inside the cylindrical shell 1.

[0021] Embodiment 1: When the worktable is under great pressure from workpieces on both sides, the adjusting bolt 23 is screwed in clockwise, which pushes the lower wedge block 22 to move downward along the inclined surface, driving the upper piston 3 to move downward a fixed distance, thereby reducing the height of the cylindrical helical compression spring 4, thereby increasing the supporting force of the adjustable machine tool worktable support mechanism on the worktable. After the adjustment is completed, the locking nut 24 is tightened to prevent the adjusting bolt 23 from loosening, so as to maintain a constant supporting force.

[0022] Example 2: When the worktable is under less pressure from workpieces on both sides, unscrew the adjusting bolt 23 counterclockwise, and the lower wedge block 22 moves upward along the inclined surface under the action of the cylindrical helical compression spring 4, and the upper piston 3 also moves upward a fixed distance, thereby increasing the height of the cylindrical helical compression spring 4 and reducing the supporting force of the adjustable machine tool worktable support mechanism on the worktable. After the adjustment is completed, tighten the locking nut 24 to prevent the adjusting bolt 23 from loosening to maintain a constant supporting force.

[0023] In order to further illustrate the above embodiment, Figure 3 As shown, the upper wedge block 21 has a groove inside for storing grease to provide long-term lubrication for the supporting force adjustment component 2 and the inside of the cylindrical shell 1.

[0024] In order to further illustrate the above embodiment, Figure 6 As shown, the roller assembly 6 includes a bearing wheel 61, a shaft 62, and a pin 63. The bearing wheel 61 is installed on both sides of the shaft 62, and the pin 63 fixes the shaft 62. The structure is simple and stable.

[0025] In order to further illustrate the above embodiment, Figure 4 As shown, two front and rear scrapers 8 are provided at the bottom of the cylindrical shell 1 for scraping off iron filings that fall on the bed rail, maintaining the smoothness of the rolling surface of the bearing wheel 61, and preventing the bearing wheel 61 from pressing on the iron filings during rolling to generate fluctuations in supporting force.

[0026] The working principle of the above embodiment is: the adjustable machine tool worktable support mechanism is installed under the machine tool worktable, and the lower roller assembly 6 rolls on the bed track, screwing in or out the adjusting bolt 23, and the lower wedge block 22 moves upward or downward along the inclined surface, driving the upper piston 3 to move upward or downward a fixed distance, changing the height of the cylindrical helical compression spring 4, thereby changing the supporting force on the worktable. After the adjustment is completed, the locking nut 24 is tightened to prevent the adjusting bolt 23 from loosening, so as to maintain a constant supporting force.

[0027] The adjustable machine tool worktable support mechanism of the embodiment of the utility model described above in combination with the accompanying drawings improves the rigidity of the machine tool, greatly improves the load-bearing capacity of the machine tool worktable, and increases the applicability of the machine tool; however, the utility model is not limited to the described implementation mode, and these changes, modifications, replacements and deformations of the implementation mode still fall within the protection scope of the utility model without departing from the principle and spirit of the utility model.

Claims

1. An adjustable machine tool worktable support mechanism, comprising a cylindrical housing (1), characterized in that: The cylindrical shell (1) is fixed below the workbench by a connecting plate (7); a support force adjustment component (2) is provided above the cylindrical shell (1); an upper piston (3), a cylindrical helical compression spring (4) and a lower piston (5) are provided below the support force adjustment component (2); a roller component (6) is installed at the bottom of the lower piston (5) and moves along the machine tool bed.

2. The adjustable machine tool worktable support mechanism according to claim 1, characterized in that: The supporting force adjustment assembly (2) comprises an upper wedge block (21), a lower wedge block (22), an adjustment bolt (23), and a locking nut (24); the adjustment bolt (23) is installed in a threaded hole on the outer wall of the cylindrical shell (1); the locking nut (24) is installed on the adjustment bolt (23); and the upper wedge block (21) and the lower wedge block (22) are arranged inside the cylindrical shell (1).

3. The adjustable machine tool worktable support mechanism according to claim 2, characterized in that: The upper wedge block (21) has a grease storage groove inside.

4. The adjustable machine tool worktable support mechanism according to claim 1, characterized in that: The roller assembly (6) comprises a bearing wheel (61), a shaft (62), and a pin (63); the bearing wheel (61) is mounted on both sides of the shaft (62), and the pin (63) is used to fix the shaft (62).

5. The adjustable machine tool worktable support mechanism according to claim 1, characterized in that: Two front and rear scrapers (8) are provided at the bottom of the cylindrical shell (1).

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