Shaft part positioning clamp

Abstract

The utility model relates to the technical field of shaft part machining, and discloses a shaft part positioning clamp which comprises a first supporting plate, a second supporting plate, a third supporting plate, a hollow shaft, a ball linear bearing, a ball guide shaft, a rotating shaft, a clamping block, a gear set, a first driving part and a second driving part. In the using process, the second driving piece is controlled to work, and the distance between the third supporting plate and the second supporting plate can be changed. And then the distance between the two rotating shafts is changed, and finally the distance between the two clamping blocks is changed, so that the shaft parts are clamped or loosened. When the shaft part is clamped and fixed, the second driving part is controlled to work, and the ball guide shaft can rotate. The two hollow shafts can be driven to rotate through the two ball linear bearings. And through the two gear sets, the two rotating shafts can be driven to rotate, and finally the two clamping blocks are driven to rotate at the same time. The 360-degree free rotation function of the shaft part is achieved, the two ends of the shaft part can be machined through one-time clamping and fixing, and the working procedure is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of shaft parts processing, for example, to a shaft parts positioning fixture. Background Art

[0002] Related technology (Announcement No.: CN220636412U) discloses a fixture for machining shaft bevels on a large CNC milling machine, comprising a base. Support plates are symmetrically mounted on the two longer sides of the top of the base, a first electric telescopic rod is mounted on the top of the inner side of the support plates, an angle sensor is sleeved and mounted on the outer ring surface of the first electric telescopic rod, and an arc-shaped clamping block is connected to one end of the first electric telescopic rod. A positioning baffle is mounted on the top of the base between the two support plates, a mounting seat is mounted on the shorter side of one end of the top of the base, a rotating shaft is mounted on the inner side of the mounting seat, a second electric telescopic rod is mounted on one side of the rotating shaft, one end of the second electric telescopic rod is connected to a connecting rod, one end of the connecting rod is connected to a rotating joint, rotating rods are symmetrically mounted on both ends of the rotating joint, a connecting plate is mounted on the rotating rod, and a collar is mounted on one end of the connecting plate.

[0003] In the process of implementing the above embodiments, it was found that there are at least the following problems in the related art:

[0004] This large-scale CNC milling machine fixture for machining beveled shafts clamps and secures the shaft by controlling the operation of two first electric telescopic rods. The second electric telescopic rod adjusts the shaft's tilt angle to perform bevel cutting. However, the clamped shaft cannot be adjusted 360°. Therefore, after machining one end of the shaft, it must be disassembled and re-clamped before machining the other end.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a shaft positioning fixture to solve the problems raised in the above-mentioned background technology.

[0008] In some embodiments, the shaft positioning fixture includes: a first support plate; a second support plate connected to the top surface of the first support plate, the plane where the second support plate is located is perpendicular to the plane where the first support plate is located; a third support plate, the plane where the third support plate is located is parallel to the plane where the second support plate is located; a hollow shaft, rotatably mounted on the second support plate and the third support plate, the axes of the two hollow shafts coincide with each other; ball linear bearings, respectively mounted inside the two hollow shafts; a ball guide shaft, slidably passed through the two ball linear bearings Bearing; a rotating shaft, rotatably mounted on the second support plate and the third support plate, the axes of the two rotating shafts coincide with each other and are parallel to the axes of the two hollow shafts; a clamping block, respectively mounted on the two rotating shafts, the two clamping blocks being relatively distributed; a gear set, respectively mounted between adjacent hollow shafts and the rotating shaft; a first driving member, mounted on the top surface of the first support plate, configured to drive the ball guide shaft to rotate; a second driving member, mounted on the top surface of the first support plate, configured to change the distance between the third support plate and the second support plate.

[0009] Optionally, the gear set includes: a driving gear, which is respectively installed on the outer walls of the two hollow shafts; a driven gear, which is respectively installed on the two hollow shafts, and the two driven gears are respectively engaged with the two driving gears.

[0010] Optionally, the first driving member includes: a reducer installed on the top surface of the first support plate; a motor installed at the input end of the reducer; and a coupling installed between the output end of the reducer and the ball guide shaft.

[0011] Optionally, the second driving member includes: a fourth support plate, connected to the top surface of the support plate and located between the opposite surfaces of the third support plate and the second support plate; an electric push rod, installed on the fourth support plate along the axial direction of the ball guide shaft, the moving end of the electric push rod is connected to the third support plate, and the tail end of the electric push rod passes through the second support plate.

[0012] Optionally, the second driving member further includes: a reinforcement member installed at the connection between the fourth support plate and the first support plate.

[0013] Optionally, it further includes: a first bearing seat, which is respectively installed on the second support plate and the third support plate, and is respectively sleeved on the two hollow shafts; and a first bearing, which is respectively installed between adjacent first bearing seats and the hollow shafts.

[0014] Optionally, it further includes: a first sealing cover, which is respectively installed on the end faces of the two first bearing seats.

[0015] Optionally, it further includes: second bearing seats, respectively installed on the second support plate and the third support plate, and respectively sleeved on the two rotating shafts; second bearings, respectively installed between adjacent second bearing seats and the rotating shafts.

[0016] Optionally, it further includes: a second sealing cover, which is respectively installed on the end faces of the two second bearing seats.

[0017] The shaft positioning fixture provided by the embodiments of the present disclosure can achieve the following technical effects:

[0018] The present disclosure provides a shaft positioning fixture, comprising a first support plate, a second support plate, a third support plate, a hollow shaft, a ball linear bearing, a ball guide shaft, a rotating shaft, a clamping block, a gear set, a first drive member, and a second drive member. The first support plate is used to support the entire device. The second support plate is connected to the top surface of the first support plate, and the plane where the second support plate is located is perpendicular to the plane where the first support plate is located, and is used to support and install the rotatable hollow shaft and the rotating shaft. The plane where the third support plate is located is parallel to the plane where the second support plate is located, and is also used to support and install the rotatable hollow shaft and the rotating shaft. The hollow shafts are rotatably mounted on the second support plate and the third support plate respectively, and the axes of the two hollow shafts coincide with each other, and can rotate relative to the second support plate and the third support plate respectively. Ball linear bearings are respectively installed inside the two hollow shafts, and are both used to support and install the slidable ball guide shaft. The ball guide shaft is slidably passed through the two ball linear bearings and can slide relative to the two ball linear bearings. The rotating shafts are rotatably mounted on the second support plate and the third support plate respectively. The axes of the two rotating shafts coincide with each other and are parallel to the axes of the two hollow shafts, and can rotate relative to the second support plate and the third support plate respectively. The clamping blocks are respectively mounted on the two rotating shafts, and the two clamping blocks are relatively distributed and used to clamp the shaft parts to be processed. The gear sets are respectively mounted between the adjacent hollow shafts and the rotating shafts, and are used to transmit driving force so that the two rotating shafts can rotate with the rotation of the two hollow shafts. The first driving member is mounted on the top surface of the first support plate, and is used to provide driving force to drive the ball guide shaft to rotate. The second driving member is mounted on the top surface of the first support plate, and is used to provide driving force to change the distance between the third support plate and the second support plate.

[0019] During use, since the ball guide shaft and the ball linear bearing can slide against each other, the spacing between the third support plate and the second support plate can be changed by controlling the operation of the second drive member. This in turn changes the spacing between the two rotating shafts, and ultimately changes the spacing between the two clamping blocks, thereby clamping or loosening the shaft-like parts. When the shaft-like parts are clamped and fixed, the ball guide shaft can be rotated by controlling the operation of the second drive member. The two hollow shafts can be driven to rotate by the two ball linear bearings. The two rotating shafts can be driven to rotate by the two gear sets, ultimately driving the two clamping blocks to rotate simultaneously. The 360° free rotation function of the shaft-like parts is achieved, and the two ends of the shaft-like parts can be processed separately after clamping and fixing them once, simplifying the process.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are considered similar elements. The drawings do not constitute a scale limitation. In addition,

[0022] Figure 1 This is a schematic cross-sectional view of a shaft positioning fixture provided by an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 4 It is a schematic diagram of the main structure of a shaft positioning fixture provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: First support plate; 2: Second support plate; 3: Third support plate; 4: Hollow shaft; 5: Ball linear bearing; 6: Ball guide shaft; 7: Rotating shaft; 8: Clamping block; 9: Driving gear; 10: Driven gear; 11: Reducer; 12: Motor; 13: Coupling; 14: Fourth support plate; 15: Electric push rod; 16: Reinforcement member; 17: First bearing seat; 18: First sealing cover; 19: Second bearing seat; 20: Second sealing cover. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0034] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0036] Combine Figures 1 to 4 As shown, an embodiment of the present disclosure provides a shaft positioning fixture, comprising a first support plate 1, a second support plate 2, a third support plate 3, a hollow shaft 4, a ball linear bearing 5, a ball guide shaft 6, a rotating shaft 7, a clamping block 8, a gear set, a first drive member, and a second drive member. The first support plate 1 is used to support the entire device. The second support plate 2 is connected to the top surface of the first support plate 1. The plane of the second support plate 2 is perpendicular to the plane of the first support plate 1 and is used to support and install the rotatable hollow shaft 4 and the rotating shaft 7. The plane of the third support plate 3 is parallel to the plane of the second support plate 2 and is also used to support and install the rotatable hollow shaft 4 and the rotating shaft 7. The hollow shaft 4 is rotatably mounted on the second support plate 2 and the third support plate 3, respectively. The axes of the two hollow shafts 4 coincide with each other and can rotate relative to the second support plate 2 and the third support plate 3, respectively. Ball linear bearings 5 are installed inside the two hollow shafts 4, each for supporting and installing the slidable ball guide shaft 6. The ball guide shaft 6 is slidably provided in the two ball linear bearings 5 and can slide relative to the two ball linear bearings 5. The rotating shaft 7 is rotatably mounted on the second support plate 2 and the third support plate 3 respectively. The axes of the two rotating shafts 7 coincide with each other and are parallel to the axes of the two hollow shafts 4. They can rotate relative to the second support plate 2 and the third support plate 3 respectively. The clamping blocks 8 are respectively mounted on the two rotating shafts 7. The two clamping blocks 8 are relatively distributed and are used to clamp the shaft parts to be processed. The gear sets are respectively mounted between the adjacent hollow shafts 4 and the rotating shafts 7 to transmit the driving force so that the two rotating shafts 7 can rotate with the rotation of the two hollow shafts 4. The first driving member is mounted on the top surface of the first support plate 1 to provide the driving force to drive the ball guide shaft 6 to rotate. The second driving member is mounted on the top surface of the first support plate 1 to provide the driving force to change the distance between the third support plate 3 and the second support plate 2.

[0037] The embodiment of the present disclosure provides a positioning fixture for shaft parts. Since the ball guide shaft 6 and the ball linear bearing 5 can slide with each other, the spacing between the third support plate 3 and the second support plate 2 can be changed by controlling the operation of the second driving member. The spacing between the two rotating shafts 7 is then changed, and finally the spacing between the two clamping blocks 8 is changed, thereby clamping or loosening the shaft part. When the shaft part is clamped and fixed, the ball guide shaft 6 can be controlled to rotate by operating the second driving member. The two hollow shafts 4 can be driven to rotate by the two ball linear bearings 5. The two rotating shafts 7 can be driven to rotate by the two gear sets, and finally the two clamping blocks 8 can be driven to rotate at the same time. The 360° free rotation function of the shaft part is realized, and the two ends of the shaft part can be processed separately after clamping and fixing once, which simplifies the process.

[0038] Optionally, combined Figure 1 and Figure 4 As shown, the gear set includes a driving gear 9 and a driven gear 10. The driving gears 9 are mounted on the outer walls of the two hollow shafts 4 and rotate under the drive of the two hollow shafts 4. The driven gears 10 are mounted on the two hollow shafts 4 and are used to drive the two rotating shafts 7. The two driven gears 10 mesh with the two driving gears 9 to transmit driving force.

[0039] In the embodiment disclosed herein, when the two hollow shafts 4 rotate, they can drive the two driving gears 9 to rotate. Through the meshing action between the teeth, they can drive the two driven gears 10 to rotate, and then drive the two rotating shafts 7 to rotate.

[0040] Optionally, combined Figure 1 and Figure 4 As shown, the first drive element includes a reducer 11, a motor 12, and a coupling 13. The reducer 11 is mounted on the top surface of the first support plate 1, reducing the rotational speed and providing a self-locking function. The motor 12 is mounted on the input end of the reducer 11 to provide driving force. The coupling 13 is mounted between the output end of the reducer 11 and the ball guide shaft 6 to transmit the driving force.

[0041] In the disclosed embodiment, controlling motor 12 drives coupling 13 through reducer 11, which in turn drives ball guide shaft 6, ultimately achieving 360° free rotation of the shaft. Furthermore, since reducer 11 has a self-locking function, the shaft can maintain a specific angle after adjustment.

[0042] Optionally, combined Figure 1 and Figure 4As shown, the second drive member includes a fourth support plate 14 and an electric push rod 15. The fourth support plate 14 is connected to the top surface of the support plate and is located between the opposing surfaces of the third support plate 3 and the second support plate 2. It is used to support and mount the electric push rod 15. The electric push rod 15 is mounted on the fourth support plate 14 along the axial direction of the ball guide shaft 6. The movable end of the electric push rod 15 is connected to the third support plate 3, and the tail end of the electric push rod 15 passes through the second support plate 2 to provide driving force.

[0043] In the disclosed embodiment, the electric push rod is controlled to move the third support plate 3 along the axial direction of the ball guide shaft 6, thereby changing the spacing between the third support plate 3 and the second support plate 2. Furthermore, the design in which the tail end of the electric push rod 15 passes through the second support plate 2 improves the compactness of the various components of the device and reduces the space occupied by the device.

[0044] Optionally, combined Figure 1 and Figure 4 As shown, the second driving member further includes a reinforcing member 16. The reinforcing member 16 is installed at the connection between the fourth support plate 14 and the first support plate 1.

[0045] In the embodiment of the present disclosure, the second driving member further includes a reinforcement member 16 mounted at the connection between the fourth support plate 14 and the first support plate 1. The reinforcement member 16 is used to increase the connection strength between the fourth support plate 14 and the first support plate 1 to prevent the connection between the fourth support plate 14 and the first support plate 1 from breaking or deforming under the action of external forces.

[0046] Optionally, combined Figure 1 and Figure 2 As shown, it also includes a first bearing seat 17 and a first bearing. The first bearing seat 17 is respectively mounted on the second support plate 2 and the third support plate 3, and is respectively sleeved on the two hollow shafts 4. The first bearing is respectively mounted between adjacent first bearing seats 17 and hollow shafts 4.

[0047] In the disclosed embodiment, first bearing seats 17 are mounted on second support plate 2 and third support plate 3, respectively, for supporting and mounting first bearings. The two first bearings are respectively used to support and mount rotatable hollow shafts 4, reducing friction on hollow shafts 4 and improving the rotational accuracy of the two hollow shafts 4.

[0048] Optionally, combined Figure 1 、 Figure 2 and Figure 4 As shown, the first sealing cover 18 is further included. The first sealing cover 18 is installed on the end surfaces of the two first bearing seats 17 respectively.

[0049] In the embodiment of the present disclosure, the first sealing cover 18 is used to perform a sealing protection function to protect the first bearing.

[0050] Optionally, combined Figure 1 and Figure 3 As shown, it also includes a second bearing seat 19 and a second bearing. The second bearing seat 19 is respectively installed on the second support plate 2 and the third support plate 3, and is respectively sleeved on the two rotating shafts 7. The second bearing is respectively installed between adjacent second bearing seats 19 and the rotating shaft 7.

[0051] In the disclosed embodiment, the second bearing seats are mounted on the second support plate 2 and the third support plate 3, respectively, for supporting and mounting the second bearings. The two second bearings are respectively used to support and mount the rotatable shaft 7, reducing the friction on the shaft 7 and improving the rotation accuracy of the two shafts 7.

[0052] Optionally, combined Figure 1 、 Figure 3 and Figure 4 As shown, the second sealing cover 20 is further included. The second sealing cover 20 is respectively installed on the end faces of the two second bearing seats 19.

[0053] In the embodiment of the present disclosure, the second sealing cover 20 is used to perform a sealing protection function to protect the second bearing.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A shaft positioning fixture, characterized in that: include: a first support plate; a second support plate connected to the top surface of the first support plate, wherein the plane where the second support plate is located is perpendicular to the plane where the first support plate is located; a third support plate, wherein the plane where the third support plate is located is parallel to the plane where the second support plate is located; a hollow shaft rotatably mounted on the second support plate and the third support plate, wherein the axes of the two hollow shafts coincide with each other; Ball linear bearings are respectively installed inside the two hollow shafts; A ball guide shaft slidably penetrates the two ball linear bearings; a rotating shaft rotatably mounted on the second support plate and the third support plate, wherein the axes of the two rotating shafts coincide with each other and are parallel to the axes of the two hollow shafts; Clamping blocks are respectively installed on the two rotating shafts, and the two clamping blocks are relatively distributed; Gear sets are respectively installed between the adjacent hollow shafts and the rotating shafts; a first driving member, mounted on a top surface of the first support plate, and configured to drive the ball guide shaft to rotate; The second driving member is installed on the top surface of the first support plate and is configured to change the distance between the third support plate and the second support plate.

2. A shaft positioning fixture according to claim 1, characterized in that: The gear set includes: Driving gears are respectively mounted on the outer walls of the two hollow shafts; The driven gears are respectively mounted on the two hollow shafts, and the two driven gears are respectively meshed with the two driving gears.

3. A shaft positioning fixture according to claim 1, characterized in that: The first driving member includes: a reducer, mounted on the top surface of the first support plate; A motor is installed at the input end of the reducer; A coupling is installed between the output end of the reducer and the ball guide shaft.

4. A shaft positioning fixture according to claim 1, characterized in that: The second driving member includes: a fourth support plate connected to the top surface of the support plate and located between the opposing surfaces of the third support plate and the second support plate; An electric push rod is installed on the fourth support plate along the axial direction of the ball guide shaft, the moving end of the electric push rod is connected to the third support plate, and the tail end of the electric push rod passes through the second support plate.

5. A shaft positioning fixture according to claim 4, characterized in that: The second driving member further includes: A reinforcement member is installed at the connection between the fourth support plate and the first support plate.

6. A shaft positioning fixture according to any one of claims 1 to 5, characterized in that: Also includes: a first bearing seat, mounted on the second support plate and the third support plate, and sleeved on the two hollow shafts; The first bearings are respectively installed between adjacent first bearing seats and the hollow shafts.

7. A shaft positioning fixture according to claim 6, characterized in that: Also includes: The first sealing covers are respectively installed on the end surfaces of the two first bearing seats.

8. A shaft positioning fixture according to any one of claims 1 to 5, characterized in that: Also includes: Second bearing seats are respectively mounted on the second support plate and the third support plate, and are respectively sleeved on the two rotating shafts; The second bearings are respectively installed between adjacent second bearing seats and the rotating shaft.

9. The shaft positioning fixture according to claim 8, characterized in that: Also includes: The second sealing covers are respectively installed on the end surfaces of the two second bearing seats.

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