Inner support clamp and machine tool

Abstract

The utility model discloses an inner support fixture and machine tool relates to machining technical field, the inner support fixture includes: mounting seat and support member, through opening the first through hole on the mounting seat, the support member passes through the first through hole, and one end of the support member is exposed out of the orifice of the first through hole and forms the cone-shaped table, and the first through hole passes through the cone-shaped table. And the other end of the supporting piece is moved so that the conical table can abut against the inner hole wall of the workpiece and clamp the workpiece. According to the technical scheme, the workpiece can be supported inside, the depth of the conical table extending into the inner hole wall of the workpiece is controlled through the moving distance, the workpiece is fixed, machining of the workpiece is facilitated, and the workpiece cannot be damaged due to external clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an internal support clamp and a machine tool. Background Art

[0002] The traditional method of clamping the impeller is generally to use a special mandrel to support the impeller from the inner hole of the impeller. The tolerance of the mandrel is high. Generally, the tolerance of the outer diameter of the mandrel is required to be within 0.01. The impeller is generally made of aluminum alloy, which is greatly affected by temperature and it is difficult to ensure the tolerance. When the impeller is installed on the mandrel, the size of the impeller inner hole is unstable, which will cause the mandrel to damage the impeller.

[0003] Alternatively, the outer diameter of the impeller can be directly clamped for turning and milling, and then the impeller can be processed using a four-axis milling machine. The disadvantage is that the impeller is easily deformed by the clamp, and it is difficult to ensure the machining accuracy of the parts, resulting in a high scrap rate. Utility Model Content

[0004] The main purpose of the utility model is to provide an internal support clamp, which is intended to support the workpiece internally, thereby improving the adaptability of the clamp and the workpiece and preventing the workpiece from being damaged due to external clamping.

[0005] To achieve the above-mentioned purpose, the internal support fixture proposed in the utility model is used to fix a workpiece, and comprises: a mounting seat, wherein the mounting seat is provided with a first through hole;

[0006] A support member, wherein the support member can be movably inserted into the first through hole, one end of the support member is exposed at an opening edge of the first through hole and is formed into a conical platform;

[0007] The other end of the support member is moved so that the conical platform abuts against the inner hole wall of the workpiece and supports and fixes the workpiece.

[0008] In one embodiment, the mounting seat is further provided with a second through hole, the first through hole is connected to the second through hole, and the first through hole and the second through hole are arranged at an angle;

[0009] The inner support clamp also includes a supporting member, which is movably inserted into the second through hole, with one end of the supporting member exposed in the second through hole and the other end supporting the supporting member. One end of the supporting member is moved so that the other end of the supporting member can support the supporting member to move and support and fix the workpiece.

[0010] In one embodiment, the included angle between the first through hole and the second through hole is 80°-100°, and an inclined surface is formed on the circumferential side of the support member, and the inclined surface extends in the direction from one end to the other end of the support member in a direction away from the supporting member, and the supporting member presses against the inclined surface to enable the support member to slide in the first through hole and support and fix the workpiece.

[0011] In one embodiment, the angle between the inclined surface and the sliding direction of the support member is 30°-60°.

[0012] In one embodiment, the mounting seat further comprises an elastic sleeve, which is mounted on an opening edge of one end of the first through hole and sleeved on the conical platform, and the outer peripheral side of the elastic sleeve is used for interference fit with the workpiece.

[0013] In one embodiment, a thread is convexly provided in the second through hole, the supporting member is threadedly connected to the second through hole, and one end surface of the supporting member facing the supporting member is a spherical surface. The supporting member is rotated to drive the spherical surface to abut the inclined surface, thereby driving the supporting member to move.

[0014] In one embodiment, a driving portion is provided on the end surface of the abutting member at the other end away from the spherical surface, and the driving portion drives the abutting member to abut against or separate from the supporting member.

[0015] In one embodiment, the other end of the mounting seat away from the conical platform is provided with an escape groove, the escape groove is connected to an opening at one end of the first through hole, and the other end of the support member away from the conical platform extends out of the escape groove;

[0016] The inner support clamp also includes a limiting assembly, which includes an elastic member and a second stop member. The elastic member is sleeved on the support member and one end abuts against the bottom of the groove. The second stop member is connected to one end of the support member extending out of the avoidance groove and abuts against the other end of the elastic member.

[0017] In one embodiment, the limit assembly further includes a fixing member, a mounting hole is formed at one end of the support member close to the fixing member, a third through hole is formed at the second stop member, and the fixing member is sequentially passed through the two holes and connected to the mounting hole to connect the second stop member and the other end of the support member;

[0018] And / or, the limiting assembly further includes a first stopper, the first stopper is sleeved on the supporting member and located at the bottom of the avoidance groove, and one end of the elastic member abuts against the first stopper.

[0019] The utility model also proposes a machine tool, which includes an internal support clamp, a driving member and a workbench as described above, wherein the internal support clamp is installed on one side of the workbench, and the driving member is installed on one side of the workbench and is driven and connected to the internal support clamp.

[0020] In the technical solution provided by the utility model, a first through hole is opened on the mounting seat, and a support member is movably inserted into the first through hole, one end of the support member is exposed at the opening of the first through hole, and is formed into a conical table, and the other end of the support member is moved so that the conical table abuts against the inner hole wall of the workpiece and supports and fixes the workpiece inside, and the depth of the conical table extending into the inner hole wall of the workpiece is controlled by moving the distance of the support member, and the different outer diameters of the conical table can adapt to workpieces with different inner diameters, fix the workpiece, and will not damage the workpiece due to external clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A structural schematic diagram of an embodiment of the internal support clamp provided by the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram of an abutment state of an embodiment;

[0024] Figure 3 for Figure 1 A cross-sectional schematic diagram of a disengaged state of an embodiment.

[0025] Description of Figure Numbers:

[0026] 10. Mounting seat; 11. First through hole; 12. Second through hole; 13. Elastic sleeve; 14. Avoidance groove; 15. Mounting hole; 20. Support member; 30. Abutment member; 31. Driving part; 40. Limiting assembly; 41. First stop member; 42. Elastic member; 43. Fixing member; 44. Second stop member; 50. Driving member.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] The utility model provides an internal support clamp, which is intended to support a workpiece internally, thereby improving the adaptability of the clamp and the workpiece and preventing the workpiece from being damaged due to external clamping.

[0032] See also Figures 1 to 3 The inner support fixture is used to fix the workpiece, and the inner support fixture includes: a mounting seat 10 and a support member 20, wherein the mounting seat 10 is provided with a first through hole 11; the support member 20 can be movably inserted into the first through hole 11, and one end of the support member is exposed at an opening edge of the first through hole 11 and is formed into a conical platform;

[0033] The other end of the support member is moved so that the conical platform abuts against the inner hole wall of the workpiece and supports and fixes the workpiece.

[0034] The internal support fixture is mainly composed of a mounting seat 10 and a support member 20. The mounting seat 10 is provided with a first through hole 11, and the support member 20 is specifically provided as a cylindrical structure, which can be movably arranged in the first through hole 11, and one end of the support member 20 is provided as a conical platform, so that the configuration can better adapt to the inner holes of impellers of different sizes and improve the adaptability of the fixture. The other end of the support member 20 can move in the first through hole 11, and the contact position and pressure between the conical platform and the inner hole of the impeller can be adjusted by moving to achieve precise clamping.

[0035] By opening a first through hole 11 on the mounting seat 10, the support member 20 is movably inserted into the first through hole 11, one end of the support member 20 is exposed at the opening of the first through hole 11, and is formed into a conical table. The other end of the support member 20 is moved so that the conical table abuts against the inner hole wall of the workpiece and clamps the workpiece, thereby supporting the workpiece inside. The depth of the conical table extending into the inner hole wall of the workpiece is controlled by the moving distance, so that the workpiece is fixed, which is convenient for processing the workpiece and will not be damaged by external clamping. A conical table is formed at one end of the support member 20, which can adapt to the inner holes of workpieces of different sizes, thereby enhancing the adaptability of the fixture. By moving the other end of the support member 20, the conical table can penetrate into the inner hole wall of the workpiece for clamping, thereby fixing the workpiece and facilitating subsequent processing operations.

[0036] Combination Figure 1 and Figure 3 As shown, in the embodiment of the utility model, the mounting seat 10 is further provided with a second through hole 12, the first through hole 11 is connected to the second through hole 12, and the first through hole 11 and the second through hole 12 are arranged at an angle;

[0037] The inner support clamp also includes a supporting member 30, which is movably inserted into the second through hole 12. One end of the supporting member 30 is exposed in the second through hole 12, and the other end is supported by the support member 20. One end of the supporting member is moved so that the other end of the supporting member can support the support member to move and support and fix the workpiece.

[0038] In this embodiment, the mounting seat 10 is provided with two through holes, namely, a first through hole 11 and a second through hole 12. The first through hole 11 and the second through hole 12 are not only connected but also arranged at a certain angle. The first through hole 11 is used to penetrate the support member 20, while the second through hole 12 is used to penetrate the abutment member 30. One end of the abutment member 30 is exposed to the outside, and the other end is abutted against the appropriate position of the support member 20. The abutment member 30 provides a driving force in the radial direction and is converted into an axial adjustment of the support member 20 to ensure that the moving accuracy of the support member 20 can be better controlled so that the conical platform of the support member 20 can stably clamp the workpiece. When the workpiece needs to be clamped, the operator can press the abutment member 30 to make one end of it contact with one end of the support member 20, thereby driving the other end to abut against the inner hole wall of the workpiece more closely. This arrangement not only improves the stability of clamping, but also makes the clamping process more controllable and accurate.

[0039] Combination Figure 1 and Figure 2As shown, in an embodiment of the utility model, the included angle between the first through hole 11 and the second through hole 12 is 80°-100°, and an inclined surface is formed on the peripheral side of the support member, and the inclined surface extends in the direction from one end to the other end of the support member in a direction away from the supporting member, and the supporting member presses against the inclined surface to enable the support member 20 to slide in the first through hole and support and fix the workpiece.

[0040] In this embodiment, the angle between the first through hole 11 and the second through hole 12 is set to 80°-100°, preferably 90°, even if the support member and the abutting member are arranged vertically, the other end of the support member 20 away from the conical platform is arranged as an inclined surface, and this inclined surface is arranged at an angle with the sliding direction of the support member 20. Such an arrangement makes one end of the abutting member 30 abut against the inclined surface. When the abutting member 30 is pressed, it will drive the support member 20 to slide inward along the first through hole 11, so that the conical platform of the support member 20 closely abuts against the inner hole wall of the workpiece, thereby achieving a firm clamping.

[0041] Combination Figure 1 and Figure 2 As shown, in the embodiment of the present invention, the included angle between the inclined surface and the sliding direction of the support member 20 is 30°-60°.

[0042] In this embodiment, the angle between the inclined surface of the support member 20 and the sliding direction is set between 30°-60°, preferably 45°. When the supporting member 30 is pressed, its end face contacts the inclined surface of the support member 20. Due to the setting of the angle, the sliding end 21 of the support member 20 can move smoothly along the inclined surface, thereby pushing the supporting end 22 to more closely abut the inner hole wall of the workpiece. The 45° angle setting reduces the force required by the operator to clamp the workpiece, thereby improving work efficiency.

[0043] Combination Figure 1 and Figure 2 As shown, in an embodiment of the utility model, the mounting seat 10 also includes an elastic sleeve 13, which is installed on an opening edge of one end of the first through hole 11 and sleeved on the conical platform, and the outer peripheral side of the elastic sleeve 13 is used for interference fit with the workpiece.

[0044] In an embodiment of the utility model, the clamping stability of the workpiece by the clamp is enhanced by providing an elastic sleeve 13. The elastic sleeve 13 is installed on the opening edge of one end of the first through hole 11. The inner peripheral side is tightly matched with the supporting end, and the outer peripheral side is used for interference fit with the workpiece to adapt to workpieces of different sizes. The elastic deformation ability of the elastic sleeve enables the clamp to adapt to changes in the size of the workpiece within a certain range.

[0045] Furthermore, the elastic sleeve 13 is the middle part of the clamp that contacts the workpiece, and its elastic characteristics help protect the surface of the workpiece and avoid damage to the workpiece during the clamping process.

[0046] Combination Figure 1 and Figure 2 As shown, in an embodiment of the utility model, a thread is convexly provided in the second through hole 12, and the supporting member is threadedly connected to the second through hole 12. The end surface of the supporting member facing the supporting member is a spherical surface. The supporting member is rotated to drive the spherical surface to abut the inclined surface, thereby driving the supporting member to move.

[0047] In this embodiment, a thread is protruded inside the second through hole 12, and the threaded connection provides a stable and adjustable fixing mechanism, which is convenient for fine-tuning or disassembling the abutment member as needed. One end of the abutment member is set as a spherical surface, and the end surface of the spherical surface abuts against the inclined surface of the support member 20. The purpose of the spherical surface setting is to provide a smooth and easy-to-move contact surface, which enables the abutment member 30 to convert the torsional force into a thrust toward the support member 20 during the support and release operations. The curvature of the spherical surface can better cooperate with the inclined surface during the rotation process, reducing the displacement caused by improper clamping.

[0048] Combination Figure 1 and Figure 2 As shown, in the embodiment of the present utility model, a driving portion 31 is provided on the end surface of the abutting member 30 which is away from the spherical surface, and the driving portion 31 drives the abutting member 30 to abut against or separate from the supporting member 20 .

[0049] In this embodiment, the abutment 30 is specifically configured as a cylindrical pin, and the other end surface of the abutment 30 that is away from the spherical surface is provided with a driving portion 31. The setting of the driving portion 31 allows the operator to control the position of the abutment 30 by manual operation to achieve rapid clamping and release of the workpiece, or to control the abutment through an external driving component to achieve rapid clamping and release of the workpiece. When it is necessary to quickly replace the workpiece or adjust the clamping position, the driving portion 31 can quickly drive the abutment 30 to move to the desired position, thereby improving work efficiency, and can be controlled by an external control system to ensure the feeding depth of the abutment, the moving distance of the support member 20 and the accurate clamping of the workpiece, thereby ensuring the accuracy of the processing process.

[0050] Combination Figure 1 and Figure 2 As shown, in the embodiment of the present utility model, the other end of the mounting seat 10 away from the conical platform is provided with an escape groove 14, the escape groove is connected to an opening at one end of the first through hole, and the other end of the support member 20 away from the conical platform extends out of the escape groove 14;

[0051] The inner support clamp also includes a limit assembly 40, which includes an elastic member 42 and a second stop member 44. The elastic member 42 is sleeved on the support member 20, and one end abuts against the bottom of the groove. The second stop member 44 is connected to one end of the support member 20 extending out of the avoidance groove 14, and abuts against the other end of the elastic member 42.

[0052] In this embodiment, an avoidance groove 14 is provided on one side of the mounting seat 10, and the avoidance groove 14 is directly connected to an opening at one end of the first through hole 11, allowing one end of the support member 20 to smoothly extend out of the avoidance groove 14. This structural setting ensures the free movement range of the support member 20.

[0053] Furthermore, the inner support clamp also includes a limit assembly 40, which is composed of an elastic member 42 and a second stop member 44. The elastic member 42 is configured as a spring and is sleeved on the support member 20, and one end of the elastic member abuts against the bottom of the avoidance groove 14, thereby ensuring the stable positioning of the support member 20. The second stop member 44 is connected to one end of the support member 20 extending out of the avoidance groove 14, and abuts against the other end of the elastic member 42, forming a stable limit structure. After the abutting member 30 is separated from the support member 20, the support member is driven to rebound to its position.

[0054] Combination Figure 1 and Figure 2 As shown, in an embodiment of the utility model, the limiting assembly 40 also includes a fixing member 43, an installation hole is opened at one end of the support member 20 close to the fixing member 43, and a third through hole is opened at the second stop member 44. The fixing member 43 is sequentially passed through the two holes and connected to the installation hole to connect the second stop member 44 and the other end of the support member.

[0055] And / or, the limiting assembly 40 further includes a first stopper 41 , the first stopper 41 is sleeved on the supporting member 20 and located at the bottom of the avoiding groove 14 , and one end of the elastic member 42 abuts against the first stopper 41 .

[0056] In this embodiment, the limit assembly 40 further includes a fixing member 43, which further enhances the stability of the limit assembly 40. The fixing member 43 is specifically configured as an M10 retaining ring fixing bolt, which provides a stable connection point for the second stop member 44. The support member 20 is specially provided with a mounting hole at one end close to the fixing member 43 to fix the fixing member 43, so that the second stop member 44 can accurately abut against the end of the elastic member 42 away from the bottom of the groove, ensuring the effective cooperation between the second stop member 44 and the elastic member 42, thereby enhancing the stability of the entire limit assembly 40.

[0057] The limiting assembly 40 may also include a first stop member 41, which is sleeved on the circumferential side of the support member 20 and located at the bottom of the avoidance groove 14, ensuring that the support member 20 is in the proper position in the avoidance groove 14, and can ensure that the support member 20 does not move excessively during operation, while providing elastic support and appropriate reverse elastic force for the elastic member 42.

[0058] The utility model also proposes a machine tool, which includes the above-mentioned internal support clamp, a driving member 50 and a workbench. The mounting seat 10 is used to be installed on one side of the workbench and is provided with a plurality of mounting holes 15. The plurality of mounting holes are located on the peripheral side of the first through hole. The plurality of mounting holes 15 are provided with a plurality of M10 fixing bolts for connecting the mounting seat 10 to the workbench. The driving member 50 is installed on one side of the workbench and is driven and connected to the internal support clamp. The specific structure of the internal support clamp refers to the above-mentioned embodiment. Since this machine tool adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0059] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An internal support fixture for fixing a workpiece, characterized in that: include: A mounting seat, wherein the mounting seat is provided with a first through hole; A support member, wherein the support member can be movably inserted into the first through hole, one end of the support member is exposed at an opening edge of the first through hole and is formed into a conical platform; The other end of the support member is moved so that the conical platform abuts against the inner hole wall of the workpiece and supports and fixes the workpiece.

2. The inner support fixture according to claim 1, characterized in that: The mounting seat is further provided with a second through hole, the first through hole and the second through hole are connected, and the first through hole and the second through hole are arranged at an angle; The inner support clamp also includes a supporting member, which is movably inserted into the second through hole, with one end of the supporting member exposed in the second through hole and the other end supporting the supporting member. One end of the supporting member is moved so that the other end of the supporting member can support the supporting member to move and support and fix the workpiece.

3. The inner support fixture according to claim 2, characterized in that: The included angle between the first through hole and the second through hole is 80°-100°, and an inclined surface is formed on the circumferential side of the support member, and the inclined surface extends in the direction from one end to the other end of the support member in a direction away from the supporting member, and the supporting member presses against the inclined surface to enable the support member to slide in the first through hole and support and fix the workpiece.

4. The inner support fixture according to claim 3, characterized in that: The included angle between the inclined surface and the sliding direction of the support member is 30°-60°.

5. The inner support fixture according to any one of claims 3 to 4, characterized in that: The mounting seat also includes an elastic sleeve, which is mounted on an opening edge of one end of the first through hole and sleeved on the conical platform. The outer peripheral side of the elastic sleeve is used for interference contact with the workpiece.

6. The inner support fixture according to claim 5, characterized in that: A thread is protruding in the second through hole, and the abutment is threadedly connected to the second through hole. One end surface of the abutment facing the support is a spherical surface. The abutment is rotated to drive the spherical surface to abut the inclined surface, thereby driving the support to move.

7. The inner support fixture according to claim 6, characterized in that: A driving part is provided on the end surface of the other end of the abutting member away from the spherical surface, and the driving part drives the abutting member to abut against or separate from the supporting member.

8. The inner support fixture according to any one of claims 1 to 4, characterized in that: The other end of the mounting seat away from the conical platform is provided with an escape groove, the escape groove is connected to an opening at one end of the first through hole, and the other end of the support member away from the conical platform extends out of the escape groove; The inner support clamp also includes a limiting assembly, which includes an elastic member and a second stop member. The elastic member is sleeved on the support member and one end abuts against the bottom of the groove. The second stop member is connected to one end of the support member extending out of the avoidance groove and abuts against the other end of the elastic member.

9. The inner support fixture according to claim 8, characterized in that: The limit assembly also includes a fixing member, an end of the support member close to the fixing member is provided with a mounting hole, the second stop member is provided with a third through hole, and the fixing member is sequentially passed through the two holes and connected to the mounting hole to connect the second stop member and the other end of the support member; And / or, the limiting assembly further includes a first stopper, the first stopper is sleeved on the supporting member and located at the bottom of the avoidance groove, and one end of the elastic member abuts against the first stopper.

10. A machine tool, characterized in that: The machine tool comprises an internal support fixture, a driving member and a workbench as described in any one of claims 2 to 9, wherein the internal support fixture is installed on one side of the workbench, and the driving member is installed on one side of the workbench and is drivingly connected to the internal support fixture.

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