Clamp specially designed for milling groove of slender shaft
By designing a clamp specially designed for slender shaft milling grooves, the combination of bolts, clamps, sliders and lifting components is used to solve the problems of vibration and precision in slender shaft milling grooves, achieving high-precision positioning and safe workpiece processing, improving machining efficiency and safety.
Patent Information
- Application Number
- CN202421672879.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-15
AI Technical Summary
Existing fixtures are prone to vibration, deformation and insufficient accuracy during the milling process of slender shafts, and there are safety hazards when removing the workpiece.
A fixture including a fixture body, bolts, clamps, positioning pins, adjustment brackets, support plates, limit sliders, sliders and lifting components are designed. Through the mating clamping of bolts and clamping, the mating movement of sliders and lifting components, the stable positioning and precise clamping of the workpiece are achieved, and the workpiece removal is simplified through the ejection function of the bracket.
It improves the accuracy and stability of milling slots with slender shafts, reduces workpiece deformation and vibration, simplifies the placement and removal process of workpieces, and improves processing efficiency and safety.
Smart Images
Figure CN223044121U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of milling groove processing of slender shafts, and specifically relates to a fixture designed specifically for milling groove processing of slender shafts. Background Technique
[0002] A fixture refers to a device used in the process of mechanical manufacturing to fix the processing object, make it occupy the correct position, and accept construction or inspection. It is also called a jig. Generally speaking, in any process of the technological process, a device used to quickly, conveniently, and safely install the workpiece can be called a fixture. A fixture usually consists of positioning elements (to determine the correct position of the workpiece in the fixture), a clamping device, tool alignment and guiding elements (to determine the relative position between the tool and the workpiece or guide the tool direction), a indexing device (to enable the workpiece to complete the processing of several stations in one installation, including rotary indexing devices and linear moving indexing devices), connecting elements, and a fixture body (the fixture base), etc. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tools fixtures, etc. Among them, machine tools fixtures are the most common and are often simply referred to as fixtures. When processing a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the dimensions, geometric shapes, and mutual position accuracies with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped firmly before processing.
[0003] In the machinery manufacturing industry, as a common workpiece, slender shafts are widely used in various equipment and mechanical systems. However, due to the shape characteristics and structural requirements of slender shafts, their processing process often faces many challenges. Especially when milling grooves on slender shafts, due to the large ratio of the length to the diameter of the shaft, it is easy to cause vibration, deformation, and insufficient accuracy during the processing. After processing, it is difficult to collect, which is likely to cause injuries to workers. During the use of existing fixtures, due to the relatively small gaps between the fixtures, the position is inaccurate when putting the workpiece in or taking it out, resulting in damage to the workpiece. At the same time, it is easy to cause injuries to the hands of the staff during the taking-out process. Content of the Utility Model
[0004] The purpose of the utility model is to provide a fixture designed specifically for milling groove processing of slender shafts to solve the problems raised in the above background technique.
[0005] To achieve the above object, the present utility model provides the following technical solutions: A fixture designed specifically for milling slots on slender shafts, comprising a fixture body, bolts, and clamping plates. A plurality of bolts are provided on the front surface of the fixture body, clamping plates are provided on the outer walls of the bolts, positioning pins are provided on the inner walls of the clamping plates, an adjusting bracket is provided at the bottom end of the fixture body, a support plate is provided at the bottom end of the fixture body, a limit slider is provided at the top end of the support plate, a slidable sliding member is provided on the outer wall of the limit slider, a lifting assembly is provided on the outer wall of the sliding member, a bracket is provided at the top end of the lifting assembly, and a workpiece is provided at the top end of the bracket.
[0006] Preferably, threaded holes matching the bolts are provided on both the front surface of the fixture body and the inner wall of the clamping plate.
[0007] Preferably, through holes matching the positioning pins are provided on both the front surface of the fixture body and the inner wall of the clamping plate.
[0008] Preferably, a strip-shaped groove for cooperating with the limit slider is provided at the bottom end of the sliding member.
[0009] Preferably, a groove for cooperating with the lifting assembly is provided on the inner wall of the sliding member.
[0010] Preferably, the lifting assembly includes a first pin rod, levers are provided on both the left and right sides of the outer wall of the first pin rod, a second pin rod is provided at the other end of the lever far from the first pin rod, a support column is provided on the outer wall of the second pin rod, and the support column is connected to the bracket at its top end.
[0011] Preferably, a cavity is provided on the front surface of the fixture body, and a groove for supporting the bracket is provided at the top end of the cavity on the front surface of the fixture body.
[0012] Preferably, a rotating shaft is provided at the center of the lever, and both sides of the outer wall of the rotating shaft at the center of the lever are connected to the inner walls of the cavity on the front surface of the fixture body.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] 1. It can well solve the problems of deformation, vibration, and insufficient precision during the milling of slender shafts, and at the same time can achieve high positioning precision and strong stability, thereby improving the machining precision. It can machine slender shafts with different diameter sizes, has high adaptability, and has a short operation time from positioning to clamping, improving the processing efficiency.
[0015] 2. It can be seamlessly matched with a variety of hydraulic workbenches and even small workbenches such as jacks, realizing flexible and precise height free adjustment, greatly improving the operation convenience and processing efficiency.
[0016] 3. When placing the workpiece, it enables the operator to more easily place the workpiece at the corresponding working position. Since the volume of the workpiece is relatively small, it may cause deviation during the placement process and damage to the workpiece during the clamping process.
[0017] 4. When the workpiece processing is completed, it enables the operator to more easily collect the workpiece and prevent the operator's hand from touching the edge position of the fixture during the process of collecting and removing the workpiece due to the relatively small gap between the fixtures, resulting in injury to the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of the present utility model;
[0019] Figure 2 is Figure 1 a schematic diagram of the detailed right - view sectional structure of
[0020] Figure 3 is Figure 1 a schematic diagram of the detailed top - view partial sectional structure of
[0021] Figure 4 is Figure 1 a schematic diagram of the detailed right - view connection structure of the local position in
[0022] Figure 5 is Figure 1 a schematic diagram of the partial right - view sectional structure of the sliding member, the first pin rod and the lever in
[0023] Figure 6 is Figure 1 a schematic diagram of the partial front - view sectional structure of the lever, the second pin rod and the support column in
[0024] In the figure: 1. Fixture main body, 2. Bolt, 3. Clamping plate, 4. Positioning pin, 5. Adjusting bracket, 6. Support plate, 7. Limit slider, 8. Sliding member, 9. First pin rod, 10. Lever, 11. Second pin rod, 12. Support column, 13. Bracket, 14. Workpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0026] Please refer to Figure 1-6, the present utility model provides a technical solution: a fixture specifically designed for milling slots on slender shafts, including a fixture body 1, bolts 2, and clamping plates 3. A plurality of bolts 2 are arranged on the front surface of the fixture body 1, and a clamping plate 3 is arranged on the outer wall of the bolt 2. The bolt 2 is used to adjust the clamping plate 3 and the fixture body 1 to perform the clamping and fixing work. The fixture body 1 cooperates with the clamping plate 3 to fix the workpiece 14. A positioning pin 4 is arranged on the inner wall of the clamping plate 3, and the positioning pin 4 is used to limit the clamping plate 3 and the fixture body 1. An adjusting bracket 5 is arranged at the bottom end of the main body 1, and the adjusting bracket 5 is used to adjust the height of the fixture.
[0027] A support plate 6 is arranged at the bottom end of the fixture body 1, and a limit slider 7 is arranged at the top end of the support plate 6. The limit slider 7 is used to slide and limit the sliding member 8 to prevent the sliding member 8 from shifting during the sliding process. A slidable sliding member 8 is arranged on the outer wall of the limit slider 7. A strip-shaped groove matching the limit slider 7 is arranged at the bottom end of the sliding member 8. The sliding member 8 and the limit slider 7 cooperate to achieve forward and backward sliding. A groove for cooperating with a lifting component is arranged on the inner wall of the sliding member 8. During the sliding process of the sliding member 8, it is used to drive the lifting component to adjust, and the height of the bracket 13 is adjusted through the lifting component. A lifting component is arranged on the outer wall of the sliding member 8, and a bracket 13 is arranged at the top end of the lifting component. The bracket 13 can eject the workpiece 14 from the fixture, and the workpiece 14 is arranged at the top end of the bracket 13.
[0028] It should be noted that threaded holes matching the bolts 2 are arranged on the front surface of the fixture body 1 and the inner wall of the clamping plate 3. The thread connects the fixture body 1 and the clamping plate 3 through the thread 2 to play a fixing role. Through holes matching the positioning pin 4 are arranged on the front surface of the fixture body 1 and the inner wall of the clamping plate 3.
[0029] Specifically, the lifting component includes a first pin rod 9. Levers 10 are arranged on the left and right sides of the outer wall of the first pin rod 9. When the sliding member 8 slides, it will drive the first pin rod 9 to move along the inclined groove. The lever 10 will rotate around the central rotating shaft under the acting force of the movement of the first pin rod 9. A second pin rod 11 is arranged at the other end of the lever 10 away from the first pin rod 9. When the lever 10 rotates, it will drive the second pin rod 11 to slide up and down. A support column 12 is arranged on the outer wall of the second pin rod 11, and the support column 12 is connected to the bracket 13 at its top end. When the second pin rod 11 slides up and down, the support column 12 and the bracket 13 will also slide up and down with the second pin rod 11 to complete the lifting work of the workpiece 14.
[0030] A cavity is arranged on the front surface of the fixture body 1. A groove for supporting the bracket 13 is arranged at the top end of the cavity on the front surface of the fixture body 1. The bracket 13 is used to limit the movement track of the bracket 13 at the top end of the cavity of the fixture body 1 to ensure that the bracket 13 can accurately complete the lifting work of the workpiece 14.
[0031] A rotating shaft is provided at the center of the lever 10. The outer walls on both sides of the rotating shaft at the center of the lever 10 are connected to the inner walls of the cavity on the front surface of the fixture body 1. The rotating shaft at the center of the lever 10 enables the lever 10 to perform the movement based on the lever principle under the action of the first pin rod 9.
[0032] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.
[0033] When the present utility model is in use, first adjust the height of the fixture body 1 through the adjusting bracket 5. After adjusting to the specified position, place the workpiece 14 on the bracket 13 between the fixture body 1 and the clamping plate 3. After placement, rotate the bolt 2. During the rotation of the bolt 2, it drives the clamping plate 3 to move inward, cooperating with the fixture body 1 to clamp and fix the workpiece 14. While the clamping plate 3 is moving, the sliding member 8 slides inward on the outer wall of the limiting slider 7. During the sliding process, it drives the right side of the lever 10 to move downward through the inclined groove. During the downward movement of the lever 10, it drives the bracket 13 to move downward inside the fixture body 1, causing the workpiece 14 to move between the fixture body 1 and the clamping plate 3 for clamping work.
[0034] After the machining of the workpiece 14 is completed, rotate the bolt 2 in the reverse direction. During the rotation work of the bolt 2, it drives the fixture body 1 and the clamping plate 3 to cancel the clamping work on the workpiece 14. During the process of canceling the clamping, the sliding member 8 slides outward, driving the other end of the lever 10 to tilt upward through the inclined sliding groove on the sliding member 8. During the tilting process, it drives the bracket 13 to move upward inside the fixture body 1. During the movement, it ejects the workpiece 14 placed inside the fixture. After ejection, it is convenient to take out the workpiece 14, thereby completing the work of canceling the fixed clamping of the workpiece 14.
[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A fixture specially designed for milling grooves of slender shafts, comprising a fixture body (1), bolts (2) and a clamping plate (3), wherein a plurality of bolts (2) are arranged on the front surface of the fixture body (1), and a clamping plate (3) is arranged on the outer wall of the bolts (2), characterized in that: The inner wall of the clamp (3) is provided with a positioning pin (4), the bottom end of the clamp body (1) is provided with an adjustment bracket (5), the bottom end of the clamp body (1) is provided with a support plate (6), the top end of the support plate (6) is provided with a limit slider (7), the outer wall of the limit slider (7) is provided with a slidable sliding member (8), the outer wall of the sliding member (8) is provided with a lifting assembly, the top end of the lifting assembly is provided with a bracket (13), and the top end of the bracket (13) is provided with a workpiece (14).
2. A fixture specially designed for milling slots of slender shafts according to claim 1, characterized in that: The front surface of the clamp body (1) and the inner wall of the clamp plate (3) are both provided with threaded holes matching the bolts (2).
3. A fixture designed for slot milling of slender shafts according to claim 2, characterized in that: The front surface of the clamp body (1) and the inner wall of the clamp plate (3) are both provided with through holes matching the positioning pins (4).
4. A fixture designed for milling slots of slender shafts according to claim 3, characterized in that: The bottom end of the sliding member (8) is provided with a strip-shaped groove for use in conjunction with the limiting sliding block (7).
5. A fixture specially designed for milling slots of slender shafts according to claim 4, characterized in that: The inner wall of the sliding member (8) is provided with a groove for use with the lifting assembly.
6. The fixture designed for slot milling of slender shafts according to claim 5, characterized in that: The lifting assembly comprises a first pin rod (9), levers (10) are arranged on the left and right sides of the outer wall of the first pin rod (9), a second pin rod (11) is arranged at the other end of the lever (10) away from the first pin rod (9), and a support column (12) is arranged on the outer wall of the first pin rod (11), and the support column (12) is connected to a bracket (13) at its top end.
7. A fixture specially designed for milling slots of slender shafts according to claim 6, characterized in that: The front surface of the clamp body (1) is provided with a cavity, and the top of the cavity on the front surface of the clamp body (1) is provided with a groove for supporting the bracket (13).
8. The fixture designed for slot milling of slender shafts according to claim 7, characterized in that: A rotating shaft is arranged at the center of the lever (10), and two sides of the outer wall of the rotating shaft of the lever (10) are connected to the inner wall of the cavity on the front surface of the clamp body (1).