Machine tool knife rest tailstock supporting mechanism

Abstract

The utility model discloses a tailstock supporting mechanism for a tool rest of a machine tool. Comprising a supporting sleeve, a bushing, a sliding sleeve, a positioning shaft and a sliding seat, the rear end of the supporting sleeve is in sealed butt joint with the front end of the lining, a sealed end disc is arranged at the rear end of the supporting sleeve, the sliding base is fixedly connected to the inner side face of the end disc, an inner cavity of the supporting sleeve and an inner cavity of the lining are communicated to form a sliding cavity, and the sliding base is located in the sliding cavity. The sliding sleeve is connected into the sliding cavity in a sliding mode, an oil cavity matched with the sliding base is formed in the rear end of the sliding sleeve, a piston matched with the oil cavity is arranged at the front end of the sliding base, and the sliding base is provided with a first oil way hole communicated with the front side of the piston and a second oil way hole communicated with the rear side of the piston. The positioning shaft is installed at the front end of the sliding sleeve, and hydraulic oil is pressed into the front side of the piston through the first oil way hole so that the sliding sleeve can drive the positioning shaft to move forwards along the sliding cavity. The positioning precision of the tool rest tailstock of the machine tool is improved, and meanwhile the positioning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to a tailstock supporting mechanism for a machine tool tool rest. Background Art

[0002] The existing machine tool tool holder tailstock support components are usually fixed, the tailstock is moved by hand, and then the support seat is pressed with a pressure plate. The accuracy is repeatedly checked, and the movement is time-consuming and labor-intensive. Therefore, in the existing machine tool tool holder tailstock support component structure, a precise and efficient structure is required to stabilize and support the spindle tool bar to ensure that the machine tool spindle tool bar is in a supported and stable working state. Utility Model Content

[0003] Aiming at the defects in the prior art, the positioning accuracy of the tailstock of a machine tool turret is improved, and the positioning efficiency is improved at the same time. The utility model provides a support mechanism for the tailstock of a machine tool turret; it includes a support sleeve, a bushing, a sliding sleeve, a positioning shaft and a sliding seat; the rear end of the support sleeve is sealed and docked with the front end of the bushing, and a sealed end plate is provided at the rear end of the support sleeve, the sliding seat is fixedly connected to the inner side of the end plate, so that the inner cavity of the support sleeve is connected with the inner cavity of the bushing to form a sliding cavity, and the sliding seat is located in the sliding cavity; the sliding sleeve is slidably connected to the sliding cavity, the rear end of the sliding sleeve is provided with an oil cavity adapted to the sliding seat, the front end of the sliding seat is provided with a piston adapted to the oil cavity, and the sliding seat is provided with a first oil passage hole connected to the front side of the piston, and a second oil passage hole connected to the rear side of the piston; the positioning shaft is installed at the front end of the sliding sleeve, and hydraulic oil is pressed into the front side of the piston through the first oil passage hole so that the sliding sleeve drives the positioning shaft to move forward along the sliding cavity, or hydraulic oil is pressed into the rear side of the piston through the second oil passage hole so that the sliding sleeve drives the positioning shaft to move backward along the sliding cavity.

[0004] The beneficial effect of the utility model is that after being installed on a machine tool, the oil flow of the first oil hole and the second oil hole is controlled by the hydraulic system. When the hydraulic oil is passed into the first oil hole, the hydraulic oil in the second oil hole is discharged, and the positioning shaft extends to tighten the spindle tool bar of the lathe. Conversely, when the hydraulic oil is passed into the second oil hole, the hydraulic oil in the first oil hole is discharged, and the positioning shaft retracts to loosen the spindle tool bar. The entire tool holder tailstock support mechanism has a compact structure, extremely small errors, stable and reliable movement of the sliding sleeve, and has the characteristics of safe position control and efficient, stable and fast support and separation of the tool bar component.

[0005] Preferably, a tool holder seat is provided outside the bushing, and the tool holder seat is adapted to the machine tool and can be quickly installed on the machine tool.

[0006] Preferably, the support sleeve and the bushing are connected via a connecting plate.

[0007] Preferably, a positioning hole is provided at the front end of the positioning shaft, and the positioning hole is adapted to the pointed cone of the spindle arbor, and does not loosen after being tightened, and the tightening effect is good.

[0008] Preferably, the front end of the sleeve is provided with an installation cavity, the positioning shaft is fixed in the installation cavity through a gland at the front end of the sleeve, and the positioning hole of the positioning shaft is exposed. After the gland is disassembled, the positioning shaft can be taken out of the installation cavity, and the positioning shaft can be replaced quickly.

[0009] Preferably, a sliding shaft is provided between the installation cavity and the oil cavity of the sliding sleeve, and the end of the sliding shaft extends axially toward the installation cavity; the sliding seat is provided with a guide hole corresponding to the sliding shaft, and the sliding sleeve slides in the sliding cavity, thereby making the sliding shaft synchronously slide in the guide hole. The sliding shaft and the guide hole, as well as the sliding sleeve and the sliding cavity, form a double positioning, with extremely small radial error, and stable axial movement without eccentricity.

[0010] Preferably, the slide seat and the sleeve are both provided with air holes, and the front end of the air holes extends to the gap between the gland and the sleeve. During the processing, the gas gap is blown out to prevent the entry of debris generated by the processing, which has the cleaning protection of the parts, effectively avoids the wear and precision loss of the internal supporting parts of the tool holder tailstock, increases the service life of the parts, reduces maintenance and eliminates maintenance costs.

[0011] Preferably, the outer side of the end plate is provided with oil pipe joints corresponding to the first oil passage holes and the second oil passage holes, and air pipe joints corresponding to the air passage holes. The oil pipe joints are connected to the hydraulic system, and the air pipe joints are connected to the air pressure system.

[0012] Preferably, the air path hole passes through the guide hole and extends along the central axis of the sliding shaft to the side of the installation cavity.

[0013] Preferably, a sealing ring is used for sliding sealing between the piston and the oil chamber, and between the rear end of the sliding sleeve and the side surface of the sliding seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 It is a structural schematic diagram of this embodiment;

[0016] Figure 2 for Figure 1 Left view of

[0017] Figure 3 for Figure 1 Schematic diagram after the middle sleeve and positioning shaft move to the left.

[0018] In the accompanying drawings, there are support sleeve 1, bushing 2, sliding sleeve 3, positioning shaft 4, sliding seat 5, receiving plate 6, tool holder seat body 7, sliding chamber 8, oil chamber 9, piston 10, sealing ring 11, first oil circuit hole 12, second oil circuit hole 13, oil pipe joint 14, sliding shaft 15, guide hole 16, pressure cover 17, positioning hole 18, air circuit hole 19, air pipe joint 20, gap 21, and end plate 22. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0020] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0021] like Figure 1 As shown, this embodiment provides a machine tool tool post tailstock support mechanism; including a support sleeve 1, a bushing 2, a sliding sleeve 3, a positioning shaft 4 and a sliding seat 5. The rear end of the support sleeve 1 is sealed and docked with the front end of the bushing 2. Specifically, the support sleeve 1 and the bushing 2 are detachably connected through a receiving plate 6. The outside of the bushing 2 is provided with a tool post seat body 7, which is adapted to the machine tool and can be quickly installed on the machine tool.

[0022] A sealed end plate 22 is provided at the rear end of the support sleeve 1, and the slide seat 5 is fixedly connected to the inner side of the end plate 22, so that the inner cavity of the support sleeve 1 is connected with the inner cavity of the bushing 2 to form a sliding cavity 8, and the slide seat 5 is located in the middle of the sliding cavity 8. The slide sleeve 3 is slidably connected in the sliding cavity 8, and the rear end of the slide sleeve 3 is provided with an oil cavity 9 adapted to the slide seat 5, and the front end of the slide seat 5 is provided with a piston 10 adapted to the oil cavity 9. In order to avoid directional flow of hydraulic oil and prevent leakage, a sealing ring 11 or a sealing ring is used to slide and seal between the piston 10 and the oil cavity 9, and between the rear end of the slide sleeve 3 and the side of the slide seat 5.

[0023] like Figure 1 , Figure 2 As shown, the slide seat 5 is provided with a first oil passage hole 12 connected to the front side of the piston 10, and a second oil passage hole 13 connected to the rear side of the piston 10. Hydraulic oil is pressed into the front side of the piston 10 through the first oil passage hole 12 so that the sleeve 3 drives the positioning shaft 4 to move forward along the sliding cavity 8, or hydraulic oil is pressed into the rear side of the piston 10 through the second oil passage hole 13 so that the sleeve 3 drives the positioning shaft 4 to move backward along the sliding cavity 8. An oil pipe joint 14 corresponding to the first oil passage hole 12 and the second oil passage hole 13 is provided on the outer side of the end plate 22, and the first oil passage hole 12 and the second oil passage hole 13 are connected to the hydraulic system.

[0024] In order to ensure the smooth movement of the slide seat 5, a slide shaft 15 is provided between the installation cavity of the sleeve 3 and the oil cavity 9 in this embodiment, and the end of the slide shaft 15 extends axially toward the installation cavity; the slide seat 5 is provided with a guide hole 16 corresponding to the slide shaft 15, and the sleeve 3 slides in the sliding cavity 8, thereby making the slide shaft 15 synchronously slide in the guide hole 16. The slide shaft 15 and the guide hole 16, as well as the sleeve 3 and the sliding cavity 8, form a double positioning, with extremely small radial error, and stable axial movement without eccentricity.

[0025] The positioning shaft 4 in this embodiment is installed at the front end of the sleeve 3. Specifically, the front end of the sleeve 3 is provided with an installation cavity, and the positioning shaft 4 is fixed in the installation cavity by a pressure cover 17 at the front end of the sleeve 3, and the positioning hole 18 of the positioning shaft 4 is exposed. After the pressure cover 17 is disassembled, the positioning shaft 4 can be taken out of the installation cavity, and the positioning shaft 4 can be replaced quickly. In addition, the front end of the positioning shaft 4 is provided with a positioning hole 18. The positioning hole 18 is adapted to the sharp cone of the spindle arbor, and does not loosen after tightening, and the tightening effect is good.

[0026] The slide seat 5 and the sleeve 3 in this embodiment are both provided with an air path hole 19, and the front end of the air hole extends to the gap 21 between the gland 17 and the sleeve 3. The rear end of the air path hole 19 passes through the side of the installation cavity, extends along the central axis of the slide shaft 15 to the guide hole 16, and finally passes through the end plate 22. An air pipe joint 20 corresponding to the air path hole 19 is provided on the outer side of the end plate 22. The air pipe joint 20 is connected to the external air pressure system. During the processing, the gas gap 21 is blown out to prevent the debris generated by the processing from entering, which has the cleaning protection of the components, effectively avoiding the wear and precision loss of the internal supporting components of the tool holder tailstock, improving the service life of the components, reducing maintenance and eliminating maintenance costs.

[0027] This embodiment also provides a method for tightening the tailstock of a machine tool tool rest, as follows:

[0028] Figure 1 As shown, S1 is installed on the machine tool through the tool holder seat 7.

[0029] S2. After the hydraulic oil is introduced into the first oil hole 12 through the hydraulic system, the hydraulic oil in the second oil hole 13 is discharged, and the positioning shaft 4 is extended until the positioning hole 18 of the positioning shaft 4 is pressed against the conical tip of the spindle tool rod.

[0030] S3. The hydraulic system keeps the clamping pressure in S2 unchanged, and the machine tool performs processing.

[0031] This embodiment also provides a method for unlocking the tailstock of a machine tool turret, as follows:

[0032] Figure 2 As shown, after the hydraulic oil is introduced into the second oil hole 13 through the hydraulic system, the hydraulic oil in the first oil hole 12 is discharged, and the positioning shaft 4 is retracted until the positioning shaft 4 is separated from the spindle tool rod.

[0033] Compared with the tightening and unlocking methods of existing machine tools, the tightening and unlocking process replaces manual operation, saves the process of repeated precision verification, and is less time-consuming. In addition, the entire tool holder tailstock support mechanism has a compact structure, extremely small errors, and the movement of the slide 3 is stable and reliable, with the characteristics of safe position control and efficient, stable and fast support and release of the tool bar component.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A machine tool tool tailstock support mechanism; characterized in that: The invention comprises a support sleeve (1), a bushing (2), a sliding sleeve (3), a positioning shaft (4) and a sliding seat (5); the rear end of the support sleeve (1) is sealedly connected to the front end of the bushing (2), and a sealed end plate (22) is provided at the rear end of the support sleeve (1); the sliding seat (5) is fixedly connected to the inner side of the end plate (22), so that the inner cavity of the support sleeve (1) is connected to the inner cavity of the bushing (2) to form a sliding cavity (8), and the sliding seat (5) is located in the sliding cavity (8); The sliding sleeve (3) is slidably connected in the sliding cavity (8); the rear end of the sliding sleeve (3) is provided with an oil cavity (9) adapted to the sliding seat (5); the front end of the sliding seat (5) is provided with a piston (10) adapted to the oil cavity (9); and the sliding seat (5) is provided with a first oil passage hole (12) connected to the front side of the piston (10), and a second oil passage hole (13) connected to the rear side of the piston (10); the positioning shaft (4) is installed at the front end of the sliding sleeve (3); hydraulic oil is pressed into the front side of the piston (10) through the first oil passage hole (12) so that the sliding sleeve (3) drives the positioning shaft (4) to move forward along the sliding cavity (8); or hydraulic oil is pressed into the rear side of the piston (10) through the second oil passage hole (13) so that the sliding sleeve (3) drives the positioning shaft (4) to move backward along the sliding cavity (8).

2. A machine tool tool rest tailstock support mechanism according to claim 1, characterized in that: A tool holder seat (7) is provided outside the bushing (2).

3. The tailstock support mechanism for a machine tool tool rest according to claim 1, characterized in that: The support sleeve (1) and the bushing (2) are connected via a connecting plate (6).

4. The tailstock support mechanism for a machine tool tool rest according to claim 1, characterized in that: A positioning hole (18) is provided at the front end of the positioning shaft (4).

5. The tailstock support mechanism for a machine tool tool rest according to claim 4, characterized in that: The front end of the sliding sleeve (3) is provided with a mounting cavity, the positioning shaft (4) is fixed in the mounting cavity via a pressure cover (17) at the front end of the sliding sleeve (3), and the positioning hole (18) of the positioning shaft (4) is exposed.

6. A machine tool tool rest tailstock support mechanism according to claim 5, characterized in that: A sliding shaft (15) is provided between the installation cavity of the sliding sleeve (3) and the oil cavity (9), and the end of the sliding shaft (15) extends axially toward the installation cavity; the sliding seat (5) is provided with a guide hole (16) corresponding to the sliding shaft (15), and the sliding sleeve (3) slides in the sliding cavity (8), thereby causing the sliding shaft (15) to slide synchronously in the guide hole (16).

7. A machine tool tool rest tailstock support mechanism according to claim 6, characterized in that: The sliding seat (5) and the sliding sleeve (3) are both provided with an air path hole (19), and the front end of the air hole extends to the gap (21) between the pressure cover (17) and the sliding sleeve (3).

8. The tailstock support mechanism for a machine tool tool rest according to claim 7, characterized in that: The outer side of the end plate (22) is provided with an oil pipe joint (14) corresponding to the first oil passage hole (12) and the second oil passage hole (13) one by one, and an air pipe joint (20) corresponding to the air passage hole (19).

9. The machine tool tool rest tailstock support mechanism according to claim 7, characterized in that: The air path hole (19) passes through the guide hole (16) and extends along the central axis of the sliding shaft (15) to the side of the installation cavity.

10. The machine tool tool rest tailstock support mechanism according to claim 1, characterized in that: The piston (10) and the oil chamber (9), as well as the rear end of the sliding sleeve (3) and the side surface of the sliding seat (5) are slidably sealed by means of a sealing ring (11).

Images