Adjustable clamping mechanism in narrow space

Abstract

According to the narrow space adjustable clamping mechanism, a supporting shaft is connected to a fixing base, and a locking sleeve is connected to the outer end of the supporting shaft; the positioning shaft is arranged in the locking sleeve in a penetrating manner, the lower end of the positioning shaft is connected with a limiting part, the lower section of the positioning shaft is sleeved with an elastic piece, and the elastic piece is located between the locking sleeve and the limiting part; the supporting seat is connected to the upper end of the positioning shaft and comprises a sleeve, a connecting column and a supporting table, the inner end of the connecting column is connected to the periphery of the sleeve, and the supporting table is connected to the outer end of the connecting column. The supporting seat adopts a special-shaped part structure to realize accurate positioning in a narrow space, and the supporting seat and the positioning shaft adopt a detachable structure, so that combination with a standard part is facilitated, the existing structure is not changed, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of precise adjustment, and particularly to an adjustable clamping mechanism in a narrow space. Background Art

[0002] After a workpiece is processed or assembled, it is necessary to detect characteristic parameters such as dimensional characteristics, shape characteristics, and surface characteristics. Clamping the workpiece is used to ensure that the relative position and angle between the workpiece and the measuring device remain fixed. At the same time, it is ensured that the workpiece does not shift during the measurement process. Therefore, during the measurement process, it is necessary to use a clamping member to fix the workpiece on the measuring bracket for measurement. The current clamping mechanism has a straight-up-and-down structure. The traditional straight-up-and-down structure cannot position and support the workpiece in a narrow space. At the same time, the existing clamping mechanism cannot perform fine adjustment to compensate for the accuracy error caused by machining or assembly. Therefore, in order to solve the above problems, an adjustable clamping mechanism in a narrow space is needed. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an adjustable clamping mechanism in a narrow space, and the specific technical solutions are as follows:

[0004] The adjustable clamping mechanism in a narrow space is characterized in that:

[0005] It includes a fixed seat, a support shaft, a positioning shaft, a locking sleeve and a support seat;

[0006] The support shaft is connected to the fixed seat. A sleeve hole is opened at the outer end of the support seat, and the locking sleeve is inserted into the sleeve hole;

[0007] The positioning shaft is inserted into the locking sleeve. A limiting part is connected to the lower end of the positioning shaft. An elastic part is sleeved on the lower section of the positioning shaft, and the elastic part is located between the locking sleeve and the limiting part;

[0008] The support seat is connected to the upper end of the positioning shaft. The support seat includes a sleeve, a connecting column and a support platform. The inner end of the connecting column is connected to the outer circumference of the sleeve, and the support platform is connected to the outer end of the connecting column.

[0009] To better implement the utility model, it can be further:

[0010] The limiting part includes a limiting ring and a limiting screw. A locking hole adapted to the structure of the limiting screw is opened at the bottom of the positioning shaft. The limiting screw is inserted into the locking hole to fix the limiting ring at the top of the positioning shaft, and the elastic part is located between the limiting ring and the locking sleeve.

[0011] Further: an annular support platform is provided on the upper section of the positioning shaft, the lower end face of the sleeve is attached to the upper end face of the annular support platform, a notch is formed on the support plate, and the notch is clamped between the annular support platform and the locking sleeve.

[0012] Further: a through hole is formed at the outer end of the support shaft, and the locking sleeve is sleeved in the through hole.

[0013] Further: a support shaft hole is formed radially in the fixed seat, a gap is provided on the semi - circumference between the two support shaft holes of the fixed seat, and the size of the gap is adjusted by a locking screw.

[0014] Further: the fixture body is connected to the inner end of the support shaft, and the clamping end of the fixture body is aligned with the support platform.

[0015] Further: the elastic member is a spring.

[0016] Further: a first semi - circular groove is axially formed on the inner wall of the sleeve hole, a second semi - circular groove is axially formed on the outer periphery of the locking sleeve, the first semi - circular groove and the second semi - circular groove have the same structure. When the locking sleeve is located in the sleeve hole, the first semi - circular groove and the second semi - circular groove form an adjustment hole, an adjustment thread is provided in the adjustment hole, an adjustment screw is arranged in the adjustment hole, and the adjustment screw is in threaded fit with the adjustment hole.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The overall structure is simple. The positioning shaft is sleeved in the locking sleeve, and the support axis and the adjustment axis of the support seat are of an eccentric shaft structure. This structure can perform positioning support on the narrow position of the workpiece. At the same time, the support seat can rotate relative to the positioning shaft. According to the position of the narrow space, the support seat is rotated to meet the positioning support of the workpiece in the narrow space. Specifically, the support seat is connected to the upper end of the positioning shaft. The support seat includes a sleeve, a connecting column and a support platform. The inner end of the connecting column is connected to the outer periphery of the sleeve, and the support platform is connected to the outer end of the connecting column. The support seat adopts a special - shaped part structure to achieve precise positioning in the narrow space. The support seat and the positioning shaft adopt a detachable structure, which is convenient to combine with standard parts, does not change the existing structure, and saves production costs. An elastic member is sleeved on the lower section of the positioning shaft, which absorbs vibration and deformation during telescopic positioning to ensure the smoothness of telescopic adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structure diagram of the present utility model;

[0020] Figure 2 is the connection schematic diagram of the positioning shaft, the locking sleeve, the elastic member and the support seat;

[0021] Figure 3Schematic diagram of the connection of the positioning shaft, locking sleeve, elastic member and limit ring;

[0022] Figure 4 Schematic diagram of the support seat structure;

[0023] Figure 5 Schematic diagram of the locking sleeve assembly;

[0024] Figure 6 Schematic diagram of the combination of the first semi-circular groove and the second semi-circular groove;

[0025] The attached drawing description in the figure is as follows: fixed seat 1, gap 2, locking screw 3, fixture body 4, support shaft 5, locking sleeve 6, positioning shaft 7, limit ring 8, elastic member 9, limit screw 10, annular support platform 11, support plate 12, sleeve 13, connecting column 14, support platform 15, first semi-circular groove 16, second semi-circular groove 17, adjustment hole 18, adjustment screw 19. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] As Figures 1 to 6 shown:

[0029] A narrow-space adjustable clamping mechanism includes a fixed seat 1, a support shaft 5, a positioning shaft 7, a locking sleeve 6 and a support seat. A support shaft hole is radially formed in the fixed seat 1, and the support shaft 5 is inserted into the support shaft hole of the fixed seat 1. A gap 2 is provided on the semi-circular circumference between the two support shaft holes of the fixed seat 1, and the size of the gap 2 is adjusted by a locking screw 3.

[0030] A socket hole is formed at the outer end of the support base 5, and the locking sleeve 6 is inserted into the socket hole. A first semi-circular groove 16 is axially formed on the inner wall of the socket hole. A second semi-circular groove 17 is axially formed on the outer periphery of the locking sleeve. The first semi-circular groove 16 and the second semi-circular groove 17 have the same structure. When the locking sleeve is located within the socket hole, the first semi-circular groove 16 and the second semi-circular groove 17 form an adjustment hole 18. An adjustment thread is provided within the adjustment hole 18. The adjustment screw 19 is disposed within the adjustment hole 18, and the adjustment screw 19 is in threaded engagement with the adjustment hole 18.

[0031] The positioning shaft 7 is inserted into the locking sleeve 6. A limiting portion is connected to the lower end of the positioning shaft 7. A resilient member 9, which is a spring, is sleeved on the lower section of the positioning shaft 7. The resilient member 9 is located between the locking sleeve 6 and the limiting portion. The limiting portion includes a limiting ring 8 and a limiting screw 10. A locking hole adapted to the structure of the limiting screw 10 is formed at the bottom of the positioning shaft 7. The limiting screw 10 is inserted into the locking hole to fix the limiting ring 8 at the top of the positioning shaft 7. The resilient member 9 is located between the limiting ring 8 and the locking sleeve 6.

[0032] The support base is connected to the upper end of the positioning shaft 7. The support base includes a sleeve 13, a connecting column 14, and a support platform 15. The inner end of the connecting column 14 is connected to the outer periphery of the sleeve 13. The support platform 15 is connected to the outer end of the connecting column 14. The fixture body 4 is connected to the inner end of the support shaft 5, and the clamping end of the fixture body 4 is aligned with the support platform 15.

[0033] Specifically, an annular support platform 11 is provided on the upper section of the positioning shaft 7. The lower end face of the sleeve 13 is attached to the upper end face of the annular support platform 11. A notch is formed on the support plate 12, and the notch is clamped between the annular support platform 11 and the locking sleeve 6. When it is necessary to position and clamp a narrow part of a workpiece, the adjustment screw 19 drives the locking sleeve 6 to finely adjust the position axially up and down within the socket hole. The support base is sleeved on the positioning shaft 7. The support base is a special-shaped member formed by the sleeve 13, the connecting column 14, and the support platform 15. The connecting column 14 is used to drive the support platform 15 to fix the lower end of the workpiece clamping position. The pressing portion of the quick fixture body 4 is used to fix the upper end of the workpiece clamping position. When the support plate 12 is removed, the positioning shaft 7 can quickly move down by the thickness distance of the support plate 12, facilitating withdrawal.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Adjustable clamping mechanism for narrow space, characterized by: It includes a fixed seat, a supporting shaft, a positioning shaft, a locking sleeve and a supporting seat; The support shaft is connected to the fixing seat, a sleeve hole is opened at the outer end of the support seat, and the locking sleeve is inserted into the sleeve hole; The positioning shaft is inserted into the locking sleeve, the lower end of the positioning shaft is connected to the limiting portion, and the lower section of the positioning shaft is sleeved with an elastic member, which is located between the locking sleeve and the limiting portion; The support seat is connected to the upper end of the positioning shaft, and the support seat includes a sleeve, a connecting column and a supporting platform. The inner end of the connecting column is connected to the outer periphery of the sleeve, and the supporting platform is connected to the outer end of the connecting column.

2. The narrow space adjustable clamping mechanism according to claim 1, characterized in that: The limiting part includes a limiting ring and a limiting screw. A locking hole adapted to the limiting screw structure is opened at the bottom of the positioning shaft. The limiting screw is inserted into the locking hole to fix the limiting ring to the top of the positioning shaft. The elastic member is located between the limiting ring and the locking sleeve.

3. The narrow space adjustable clamping mechanism according to claim 2, characterized in that: The upper section of the positioning shaft is provided with an annular support platform, the lower end surface of the sleeve is fitted on the upper end surface of the annular support platform, a notch is opened on the support plate, and the notch is inserted between the annular support platform and the locking sleeve.

4. The narrow space adjustable clamping mechanism according to claim 3, characterized in that: A through hole is provided at the outer end of the support shaft, and the locking sleeve is inserted into the through hole.

5. The narrow space adjustable clamping mechanism according to claim 4, characterized in that: A support shaft hole is opened radially on the fixing seat, and a gap is arranged on the semicircle between the two support shaft holes of the fixing seat, and the size of the gap is adjusted by a locking screw.

6. The narrow space adjustable clamping mechanism according to claim 5, characterized in that: The clamp body is connected to the inner end of the support shaft, and the clamping end of the clamp body is aligned with the support platform.

7. The narrow space adjustable clamping mechanism according to claim 6, characterized in that: The elastic member is a spring.

8. The narrow space adjustable clamping mechanism according to claim 7, characterized in that: A first semicircular groove is axially opened on the inner wall of the sleeve hole, and a second semicircular groove is axially opened on the outer periphery of the locking sleeve. The first semicircular groove and the second semicircular groove have the same structure. When the locking sleeve is located in the sleeve hole, the first semicircular groove and the second semicircular groove form an adjustment hole, and an adjustment thread is arranged in the adjustment hole. The adjustment screw is arranged in the adjustment hole, and the adjustment screw cooperates with the adjustment hole thread.

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