Mara puller machining clamp and tapping machine

Abstract

The utility model discloses a horse puller machining clamp and a tapping machine, belongs to the field of horse puller machining, and aims to solve the problem that time and energy are needed to adjust the jaw position and the clamping force when a bench vice is used for clamping a workpiece. According to the technical scheme, the device is characterized by comprising a stand column, a positioning mandrel, a supporting block, a propelling device and a driving piece; the supporting block slides in the diameter direction of the positioning mandrel; the propelling device is slidably arranged in the positioning mandrel, one end of the propelling device extends to the outer side of the positioning mandrel, and the propelling device is in transmission connection with the supporting block; the driving piece is rotationally arranged on the stand column. By means of innovation of spiral transmission and radial self-adaption, linear adjustment of a traditional bench vice is upgraded into rotation-radial composite motion, breakthrough is achieved in the three dimensions of efficiency, precision and usability, the bench vice is particularly suitable for high-frequency remodeling scenes of small curved-surface workpieces, and the comprehensive machining cost is reduced by more than 35% compared with a traditional scheme.

Description

Technical Field

[0001] This utility model relates to the field of horse head processing, and more specifically, it relates to a horse head processing fixture and a tapping machine. Background Technology

[0002] The boom arm, also known as the boom tie rod, is a tie rod installed on an excavator to connect the end of the boom to the bucket. In order to facilitate the injection and storage of grease, the existing boom arm has threads drilled on the inner wall of the grease injection hole after drilling, so as to connect the grease injection nozzle.

[0003] Currently, the oil injection hole for machining horse-head parts is generally processed using a tapping machine. These tapping machines typically use a bench vise to clamp the workpiece. Traditional bench vises rely on a lead screw drive for clamping, requiring the operator to manually rotate the lead screw to adjust the jaw distance. This clamping method involves rotating the lead screw multiple times when adjusting the jaw size, especially from the maximum to the minimum distance, resulting in slow and time-consuming operation.

[0004] Meanwhile, for small horse heads, the machining surface is located on the curved side wall and the volume is small, which means that more time and effort are needed to adjust the jaw position and clamping force during the clamping process.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a horse head processing fixture and a tapping machine to solve the above problems.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a horse head processing fixture, comprising:

[0008] The column is fixedly mounted on the tapping machine;

[0009] A positioning mandrel is used to fix the position of the horse head. The positioning mandrel is fixedly connected to the column. An avoidance groove is opened on the outer wall of the positioning mandrel. The avoidance groove extends along the axial direction of the positioning mandrel. Its depth and width are adapted to the diameter of the tap.

[0010] A support block is used to abut against the inner wall of the horse head. The support block is slidably mounted on the positioning mandrel, and the sliding direction is along the diameter direction of the positioning mandrel.

[0011] A propulsion device is used to push the support block to slide. The propulsion device is slidably disposed inside the positioning mandrel and one end extends to the outside of the positioning mandrel. The propulsion device is connected to the support block in a transmission manner.

[0012] A driving component is used to abut against and drive the propulsion device to displacement. The driving component is rotatably mounted on the column and is configured as a helical structure. The outer wall of the driving component abuts against the propulsion device.

[0013] When the drive component is rotated, its helical structure moves a constant distance into the positioning spindle via the pitch-driven propulsion device.

[0014] The present invention is further configured such that the propulsion device includes:

[0015] A movable part is used to abut against the driving component. The movable part is slidably disposed inside the positioning mandrel and extends to the outside of the positioning mandrel at one end.

[0016] A hinge rod is used to push the support block to move, and the two ends of the hinge rod are respectively hinged to the moving part and the support block;

[0017] When the moving part moves into the positioning mandrel, the hinge rod simultaneously pushes the support block to slide along the diameter direction of the positioning mandrel towards the inner wall of the horse head.

[0018] The present invention is further configured such that: the propulsion device further includes an adjustment sleeve installed at the connection between the moving part and the hinge rod, the adjustment sleeve being threadedly connected to the moving part;

[0019] When used with different sizes of horse heads, the adjusting sleeve can be moved axially along the moving part via the thread to change the tilt angle of the hinge rod.

[0020] The present invention is further configured such that: a spring is connected to one end of the moving part away from the driving member, and the other end of the spring abuts against the inner wall of the positioning mandrel.

[0021] The present invention is further configured such that: an adjustment cover is threadedly connected to the contact point between the positioning mandrel and the spring, and the other end of the adjustment cover extends to the outside of the positioning mandrel.

[0022] The present invention is further configured such that at least three support blocks are provided, and the support blocks are evenly distributed around the outer periphery of the positioning mandrel.

[0023] A tapping machine includes the aforementioned horse-head machining fixture and base, wherein the column and the base are fixedly connected by bolts and nuts.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] Firstly, the spiral structure of the drive component, combined with the hinged rod transmission, enables clamping / release to be completed with a 180° rotation of the handle, which is 80% faster than the traditional screw bench vise (which requires 8 to 10 rotations). It is especially suitable for small-batch, multi-specification production and has a significant efficiency advantage when frequently changing models.

[0026] Secondly, the support block features radial adaptive clamping (adjustable initial position), perfectly conforming to the curved sidewall of the vise head, thus solving the problem of uneven force application in traditional bench vises that "clamp a curved surface with a flat surface."

[0027] Third, the adjustable threaded hinge rod angle allows for changing the head of different specifications of the horse within 5 seconds, reducing the changeover time by 83% compared to the traditional bench vise (which requires loosening, adjusting, and tightening, taking ≥30 seconds).

[0028] Fourth, all moving parts are built into the positioning spindle, reducing the exposed volume by 60%, which facilitates operation in complex installation spaces such as the excavator boom;

[0029] Fifth, the design innovates with "screw drive + radial adaptive" to upgrade the traditional bench vise's "linear adjustment" to "rotation-radial composite motion", achieving breakthroughs in efficiency, precision and ease of use. It is especially suitable for high-frequency changeover scenarios for small curved workpieces, and the overall processing cost is reduced by more than 35% compared with traditional solutions. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 3 This is a schematic diagram of the propulsion device.

[0033] Reference numerals: 1. Column; 2. Positioning spindle; 3. Clearance groove; 4. Support block; 5. Propulsion device; 6. Drive component; 7. Moving part; 8. Hinge rod; 9. Adjusting sleeve; 10. Spring; 11. Adjusting cover. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. Example

[0035] A type of horse-head machining fixture and tapping machine, such as Figures 1-3 As shown, the machine includes a column 1 fixedly mounted on the tapping machine and a positioning mandrel 2 for fixing the position of the tap head. The positioning mandrel 2 is made of 40Cr alloy steel (heat treated, hardness HB220-250), with chrome plating (thickness ≥0.02mm) to improve wear resistance. The column 1 has a groove for inserting the positioning mandrel 2, and the insertion end of the positioning mandrel 2 has a threaded hole. The side wall of the column 1 has a through hole connecting to the threaded hole, so that the positioning mandrel 2 is fixedly connected to the column 1 by bolts. When machining the tap head, the tap head can be placed on the positioning mandrel 2 to achieve initial positioning. At the same time, the outer side wall of the positioning mandrel 2 has an avoidance groove 3, which extends along the axial direction of the positioning mandrel 2. Its depth and width are adapted to the diameter of the tap, so as to ensure that the tap does not interfere with the positioning mandrel 2 during machining.

[0036] At the same time, such as Figures 1-3 As shown, it also includes a support block 4 for abutting against the inner wall of the horse head, a propulsion device 5 for pushing the support block 4 to slide, and a drive member 6 for abutting against and driving the propulsion device 5 to move. The support block 4 is slidably mounted on the positioning spindle 2, thereby stably achieving the abutting effect against the inner wall of the horse head. The propulsion device 5 is slidably mounted inside the positioning spindle 2, with one end extending to the outside of the positioning spindle 2. The drive member 6 is rotatably mounted on the column 1, and the drive member 6 is configured as a spiral structure. The outer wall of the drive member 6 abuts against the propulsion device 5, so that when the drive member 6 is rotated, its spiral structure drives the propulsion device 5 to move into the positioning spindle 2 through the pitch. At the same time, the propulsion device 5 is connected to the support block 4 through transmission, thereby achieving the effect of pushing the support block 4 against the inner wall of the horse head, and thus fixing the position of the horse head.

[0037] Meanwhile, the axial displacement S of the propulsion device 5 is determined by the following formula: S = P × n, where P is the pitch and n is the number of rotations of the drive component 6. The pitch P of the helical structure is a constant value, guaranteed by machining accuracy. Therefore, the axial displacement S is affected by the number of rotations of the drive component 6. A handle is fixedly connected to the drive component 6. When the propulsion device 5 abuts against the root of the helical structure, the handle is placed vertically. When the handle rotates 180 degrees, the propulsion device 5 transitions from the root to the crest of the helical structure, thus achieving the desired position of the propulsion device 5. Since the rotation angle of the drive component 6 is fixed, the number of rotations n is also fixed. Therefore, each time the operator operates, the propulsion device 5 can move a constant distance, which in turn allows the support block 4 to move a constant distance. Compared to the existing clamping process, which requires more time and effort to adjust the jaw position and clamping force, this method offers a more convenient and faster operation, saving a significant amount of time.

[0038] And as Figures 2-3 As shown, the sliding direction of the support block 4 is along the diameter direction of the positioning mandrel 2. When the propulsion device 5 drives the support block 4 to slide outward along the diameter direction, the outer side of the support block 4 abuts against the inner wall of the tapping head. The position of the tapping head is fixed by friction or mechanical limit, preventing it from rotating or moving axially during the tapping process. When the support block 4 slides radially inward, the contact force between it and the inner wall of the tapping head decreases, which facilitates quick loading and unloading of the tapping head and improves processing efficiency. At the same time, if the tapping head has slight ellipticity or dimensional deviation, the radial sliding of the support block 4 can automatically adjust the contact position to compensate for geometric errors and ensure the accuracy of the tapping position. Moreover, the design of sliding along the diameter direction allows the support block 4 to be completely housed inside the positioning mandrel 2 in the initial state, avoiding the interference of exposed parts with the placement of the initial tapping head workpiece.

[0039] At the same time, such as Figure 3 As shown, at least three support blocks 4 are provided, and the support blocks 4 are evenly distributed around the outer periphery of the positioning mandrel 2. Multiple support blocks 4 are evenly distributed around the circumference of the positioning mandrel 2. By sliding synchronously, they can adapt to the different inner diameters of the horse head, ensuring that the clamping force is evenly distributed, avoiding local deformation, and ensuring the processing quality.

[0040] like Figures 2-3 As shown, the propulsion device 5 includes a movable part 7 for abutting against the driving member 6 and a hinged rod 8 for pushing the support block 4 to move. The movable part 7 is slidably disposed inside the positioning spindle 2 and extends to the outside of the positioning spindle 2 at one end. The extended end of the movable part 7 abuts against the driving member 6. The two ends of the hinged rod 8 are hinged to the movable part 7 and the support block 4 respectively, so that when the driving member 6 rotates, it pushes the movable part 7 to move inside the positioning spindle 2. The hinged rod 8 synchronously pushes the support block 4 to slide along the diameter direction of the positioning spindle 2 towards the inner wall of the horse head, thereby fixing the position of the horse head.

[0041] At the same time, such as Figures 2-3 As shown, the propulsion device 5 also includes an adjusting sleeve 9 installed at the connection between the moving part 7 and the hinge rod 8. The adjusting sleeve 9 is threadedly connected to the moving part 7, thereby changing the position of the adjusting sleeve 9 on the moving part 7. Once the position of the adjusting sleeve 9 is fixed, it will not move arbitrarily, thus ensuring the transmission stability between the parts inside the propulsion device 5. When used with different sizes of horse heads, the adjusting sleeve 9 can be moved axially along the moving part 7 through the thread to change the tilt angle of the hinge rod 8, which in turn changes the initial position of the support block 4 in the diameter direction of the positioning spindle 2. Thus, although the moving distance is the same, the endpoint is different due to the different initial positions, thereby adapting to the inner wall diameter of small horse heads of different sizes.

[0042] like Figures 2-3As shown, the end of the moving part 7 away from the driving member 6 is connected to a spring 10, and the other end of the spring 10 is connected to the inner wall of the positioning spindle 2. When the driving member 6 is rotated in the forward direction, the moving part 7 moves inward and compresses the spring 10. When the driving member 6 is rotated in the reverse direction, the spring 10 releases its elastic thrust to push the moving part 7 back to its original position, preparing it for the next use.

[0043] Among them, such as Figure 3 As shown, a disc is fixedly connected at the contact point between the movable part 7 and the spring 10. The disc increases the contact area with the spring 10, thereby ensuring the stable output of the elastic support force of the spring 10, and at the same time providing a point of force application when the movable part 7 is rotated.

[0044] like Figures 1-2 As shown, an adjustment cover 11 is threadedly connected to the abutment of the positioning mandrel 2 and the spring 10. The other end of the adjustment cover 11 extends to the outside of the positioning mandrel 2. By changing the depth of the adjustment cover 11 inside the positioning mandrel 2, the initial compressed state of the spring 10 is changed, thereby ensuring that the service life can still be extended when the elasticity of the spring 10 decays. In addition, by setting the adjustment cover 11, it is convenient to install the pushing device 5 and adjust the position of the adjustment sleeve 9 inside the positioning mandrel 2 during production and installation.

[0045] A tapping machine includes the aforementioned tapping head processing fixture and base, with the column 1 fixedly connected to the base by bolts and nuts.

[0046] Working principle: The horse head to be processed is placed on the positioning mandrel 2 for initial positioning. Then, the handle of the drive component 6 is pulled to drive the drive component 6 to rotate, so that the drive component 6 pushes the moving part 7 to move into the positioning mandrel 2. The positioning mandrel 2 pushes the support block 4 to move outward along the diameter direction of the positioning mandrel 2 through the hinge rod 8. Then, the support block 4 abuts against the inner wall of the horse head to fix the position of the horse head. Then the tapping machine can be started for processing.

[0047] Meanwhile, depending on the specifications of the small horse head to be processed, the position of the adjusting sleeve 9 on the moving part 7 can be adjusted by rotating the moving part 7, thereby changing the initial tilt angle of the hinge rod 8, thus changing the initial position of the support block 4 on the positioning spindle 2. Then, during the subsequent process of the driving member 6 pushing the support block 4 to move, although the support block 4 moves the same distance, the endpoint is different due to the different initial positions, thus adapting to the inner wall diameter of small horse heads of different specifications.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. A harness head processing fixture, characterized by: include: The column (1) is fixedly installed on the tapping machine; The positioning mandrel (2) is used to fix the position of the horse head. The positioning mandrel (2) is fixedly connected to the column (1). A relief groove (3) is opened on the outer wall of the positioning mandrel (2). The relief groove (3) extends along the axial direction of the positioning mandrel (2). Its depth and width are adapted to the diameter of the tap. Support block (4) is used to abut against the inner wall of the horse head. The support block (4) is slidably set on the positioning mandrel (2) and the sliding direction is along the diameter direction of the positioning mandrel (2). The propulsion device (5) is used to push the support block (4) to slide. The propulsion device (5) is slidably disposed inside the positioning mandrel (2) and one end extends to the outside of the positioning mandrel (2). The propulsion device (5) is connected to the support block (4) in a transmission manner. A driving member (6) is used to abut against and drive the propulsion device (5) to move. The driving member (6) is rotatably mounted on the column (1) and the driving member (6) is configured as a spiral structure. The outer wall of the driving member (6) abuts against the propulsion device (5). When the drive unit (6) is rotated, its spiral structure moves a constant distance into the positioning spindle (2) through the pitch drive propulsion device (5).

2. A horse harness processing fixture according to claim 1, characterized in that: The propulsion device (5) includes: The movable part (7) is used to abut against the driving member (6). The movable part (7) is slidably disposed inside the positioning mandrel (2) and one end extends to the outside of the positioning mandrel (2). The hinge rod (8) is used to push the support block (4) to move. The two ends of the hinge rod (8) are respectively hinged to the moving part (7) and the support block (4); When the moving part (7) moves into the positioning spindle (2), the hinge rod (8) simultaneously pushes the support block (4) to slide along the diameter direction of the positioning spindle (2) towards the inner wall of the horse head.

3. A harness head processing jig according to claim 2, characterized by: The propulsion device (5) further includes an adjustment sleeve (9) installed at the connection between the moving part (7) and the hinge rod (8), the adjustment sleeve (9) being threadedly connected to the moving part (7); When used with different sizes of horse heads, the adjusting sleeve (9) can be moved axially along the moving part (7) via the thread to change the tilt angle of the hinge rod (8).

4. A harness head processing fixture according to claim 2, wherein: The moving part (7) is connected to a spring (10) at one end away from the driving member (6), and the other end of the spring (10) abuts against the inner wall of the positioning mandrel (2).

5. A harness head processing jig according to claim 4, characterized by: An adjustment cover (11) is threadedly connected to the abutment of the positioning mandrel (2) and the spring (10), and the other end of the adjustment cover (11) extends to the outside of the positioning mandrel (2).

6. A horse head processing fixture according to claim 1, characterized in that: At least three support blocks (4) are provided, and the support blocks (4) are evenly distributed around the outer periphery of the positioning mandrel (2).

7. A tapping machine characterized by: The tool includes the horse head processing fixture and base as described in any one of claims 1-6, wherein the column (1) is fixedly connected to the base by bolts and nuts.

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