Multi-station automatic turning clamp for numerical control lathe

Abstract

The utility model relates to a multi-station automatic turning clamp for a numerical control lathe, a slidable cross-shaped dovetail sliding block is arranged on a clamp body, one side of the cross-shaped dovetail sliding block is a part clamping working face used for fixing a machined part, and the other side of the cross-shaped dovetail sliding block is provided with a back baffle; a slidable pressing claw is arranged on the clamp body, the pressing claw and the cross-shaped dovetail sliding block are correspondingly arranged in a matched mode, a machined part is arranged between the pressing claw and the cross-shaped dovetail sliding block, and a movable pressing block is arranged between the pressing claw and the machined part. During use, a plurality of different machining positions can be provided for a machined part through sliding of the cross-shaped dovetail sliding block, various kinds of turning machining can be conveniently and continuously carried out, operation time is shortened, and machining efficiency and machining precision are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of machining, specifically a multi-station automatic lathe fixture for CNC lathes. Background Technology

[0002] Currently, some parts require machining at two or more linear positions during turning, and the accuracy must be guaranteed. The following methods are commonly used: 1. Use multiple sets of turning fixtures to complete the machining of each position of the part; 2. Use a turning-milling composite lathe for machining; 3. Design the pin positions on the turning fixture, manually adjust the position, lock the fixture, and then perform machining.

[0003] For parts requiring machining in multiple linear positions, the above machining method has the following disadvantages: 1. Using multiple sets of fixtures significantly increases fixture procurement costs and fixture changeover time. This translates to a substantial increase in production costs. 2. Mill-turn lathes can improve machining accuracy and reduce machining time, but lathes are expensive, increasing production costs accordingly. 3. Using single-piece fixtures and manually adjusting the machining position leads to long operator time and low precision.

[0004] Therefore, there is an urgent need in the market for a new type of multi-station automatic lathe fixture for CNC lathes. Summary of the Invention

[0005] The purpose of this invention is to provide an improved multi-station automatic turning fixture for CNC lathes. Through structural improvements, multiple different turning linear positions can be provided for the workpiece on a single fixture, reducing operation time and improving machining efficiency and accuracy.

[0006] To achieve the above objectives, the technical solution of this utility model is: a multi-station automatic lathe fixture for CNC lathes, comprising a fixture body, characterized in that: the fixture body is provided with a slidable cross-shaped dovetail slider, one side of which is a work surface for clamping the workpiece to fix it, and the other side is provided with a back baffle; the fixture body is provided with slidable pressure claws, which are correspondingly matched with the cross-shaped dovetail slider, and the workpiece is disposed between the pressure claws and the cross-shaped dovetail slider, with a movable pressure block between the pressure claws and the workpiece.

[0007] Preferably, the bottom of the cross-shaped dovetail slider is provided with a raised horizontal locking strip, and the clamping body is provided with a horizontal locking groove that cooperates with the horizontal locking strip; the bottom of the pressure claw is provided with a raised vertical locking strip, and the clamping body is provided with a vertical locking groove that cooperates with the vertical locking strip, and the horizontal locking groove and the vertical locking groove are connected.

[0008] Furthermore, an elastic pin is provided between the cross-shaped dovetail slider and the pressure claw. The cross-shaped dovetail slider has a slider pin hole that mates with the elastic pin. A compression spring is fitted on the elastic pin. The elastic pin is located in a longitudinal slot. The clamping body has a spring pin pressing block that mates with the elastic pin.

[0009] Furthermore, the back panel and the cross-shaped dovetail slider are fixed together by a pluggable spring plunger. The back panel is L-shaped, and the clamping body is provided with a stepped groove for fixing the back panel.

[0010] Furthermore, there are 3-6 spring plungers, evenly distributed on the back baffle. The back baffle has fixing holes for placing the spring plungers. One end of the spring plunger is larger than the other end, and the diameter of the small end of the spring plunger is smaller than the diameter of the fixing hole.

[0011] Furthermore, the work surface for clamping the part is provided with a locating pin, and the workpiece is provided with a reference locating hole that mates with the locating pin.

[0012] Furthermore, a cylinder is provided on one side of the clamping body, and the output end of the cylinder cooperates with the cross-shaped dovetail slider to drive the cross-shaped dovetail slider to slide along the clamping body.

[0013] Compared with the prior art, the technical solution of this utility model not only improves the overall technical solution, but also includes many detailed improvements. Specifically, it has the following beneficial effects:

[0014] 1. The improved solution of this utility model is provided with a sliding cross-shaped dovetail slider on the fixture body. One side of the cross-shaped dovetail slider is a work surface for clamping the workpiece to fix it, and the other side is provided with a back baffle. The fixture body is provided with a sliding pressure jaw, which is correspondingly matched with the cross-shaped dovetail slider. The workpiece is placed between the pressure jaw and the cross-shaped dovetail slider. A movable pressure block is provided between the pressure jaw and the workpiece. By sliding the cross-shaped dovetail slider, multiple different processing positions can be provided for the workpiece, which facilitates continuous various turning operations, reduces operation time, and improves processing efficiency.

[0015] 2. In the technical solution of this utility model, an elastic pin is provided between the cross-shaped dovetail slider and the pressure claw. The cross-shaped dovetail slider is provided with a slider pin hole that cooperates with the elastic pin. A compression spring is sleeved on the elastic pin. The elastic pin is set in the longitudinal groove. The transverse coordinate of the workpiece is initially determined by the movement of the cross-shaped dovetail slider. Then, the workpiece is precisely positioned by the cooperation of the pressure claw and the elastic pin, which provides the quality and accuracy of subsequent processing.

[0016] 3. In the structure of this utility model, there are 3-6 spring plungers, which are evenly distributed on the back baffle. The back baffle is provided with fixing holes for placing the spring plungers. One end of the spring plunger is larger than the other end. The diameter of the small end of the spring plunger is smaller than the diameter of the fixing hole. Here, the spring plungers are used to perform preliminary positioning of the cross-shaped dovetail slider. This positioning method is convenient, simple, and efficient, shortens the entire positioning and clamping steps, and improves efficiency.

[0017] 4. This utility model has a simple structure, reasonable layout, is easy to use, has a wide range of applications, and is easy to promote and utilize. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0019] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 3 for Figure 2 Sectional view along the AA direction.

[0021] Figure 4 for Figure 2 Sectional view along the BB direction.

[0022] Figure 5 for Figure 2 A cross-sectional view along the CC direction.

[0023] Figure 6 for Figure 3 A magnified view of part D in the middle.

[0024] Figure 7 for Figure 2 A magnified view of part E in the middle.

[0025] Figure label:

[0026] 1. Clamp body, 2. Cross-shaped dovetail slider, 3. Pressure jaws, 4. Movable pressure block, 5. Back baffle, 6. Spring pin pressure block, 7. Elastic pin, 8. Compression spring, 9. Positioning pin, 10. Workpiece to be machined.

[0027] 21. Positioning groove;

[0028] 51. Spring plunger. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] This utility model provides a multi-station automatic lathe fixture for CNC lathes, including a fixture body 1, as detailed below. Figure 1 The difference between this and the prior art is that: the fixture body 1 is provided with a sliding cross-shaped dovetail slider 2, one side of which is a work surface for clamping the workpiece and is used to fix the workpiece, and the other side is provided with a back baffle 5 for initially fixing the position of the cross-shaped dovetail slider; the fixture body 1 is provided with a sliding pressure claw 3, which is correspondingly matched with the cross-shaped dovetail slider 2, wherein the pressure claw slides longitudinally along the fixture body, while the cross-shaped dovetail slider slides laterally along the fixture body, the workpiece 10 is placed between the pressure claw and the cross-shaped dovetail slider, and a movable pressure block 4 is provided between the pressure claw and the workpiece.

[0031] In use, the workpiece is first fixed on the clamping surface of the cross-shaped dovetail slide. Then, the cross-shaped dovetail slide is slid, and the slide is initially fixed by the back baffle. Next, the clamping jaws further clamp and fix the workpiece. Finally, the elastic pins between the cross-shaped dovetail slide and the clamping jaws precisely position the workpiece, ensuring it is firmly fixed, and the first turning operation can begin. After machining, the clamping jaws can be released, and the cross-shaped dovetail slide can be moved to adjust the position of the workpiece. The above steps can then be repeated for re-clamping, allowing for further turning operations at different positions. A third or fourth clamping can be performed as the cross-shaped dovetail slide continues to move. The sliding of the cross-shaped dovetail slide provides multiple different machining positions for the workpiece, facilitating continuous turning operations, reducing operation time, and improving machining efficiency and accuracy.

[0032] Example 1

[0033] This embodiment describes a multi-station automatic lathe fixture for CNC lathes. See [link to documentation]. Figure 1 , Figure 2The fixture includes a clamping body 1 and a slidable dovetail slider 2. One side of the dovetail slider serves as a clamping surface for fixing the workpiece, while the other side has a back baffle 5 for initial fixation of the slider's position. The clamping body also has slidable pressure claws 3, which are configured to cooperate with the dovetail slider. The pressure claws slide longitudinally along the clamping body, while the dovetail slider slides laterally. The workpiece is positioned between the pressure claws and the dovetail slider, with a movable pressure block between them. The clamping of the pressure claws 3 and the dovetail slider 2 fixes the workpiece in the desired position. After the first machining operation, the pressure claws are released, and the dovetail slider is moved to the second machining position. The workpiece is then clamped and positioned again by the cooperation between the pressure claws and the dovetail slider to complete subsequent machining.

[0034] Specifically, the bottom of the dovetail slider 2 is provided with a raised horizontal retaining strip, and the clamping body is provided with a horizontal retaining groove that cooperates with the horizontal retaining strip. The horizontal retaining groove is set in a square groove, which can accommodate the bottom of the dovetail slider to slide within the square groove. The bottom of the pressure claw 3 is provided with a raised vertical retaining strip, and the clamping body is provided with a vertical retaining groove that cooperates with the vertical retaining strip. The horizontal retaining groove and the vertical retaining groove are connected and intersect perpendicularly. Furthermore, an elastic pin 7 is provided between the dovetail slider and the pressure claw. The dovetail slider is provided with a slider pin hole that cooperates with the elastic pin. A compression spring 8 is sleeved on the elastic pin. The elastic pin is set in the vertical retaining groove, and the clamping body is provided with a spring pin pressure block 6 that cooperates with the elastic pin. Through the elastic pin, the position of the dovetail slider can be further adjusted and positioned to achieve precise positioning and ensure the machining accuracy of subsequent parts.

[0035] The back baffle 5 and the cross-shaped dovetail slider 2 are initially fixed together by pluggable spring plungers 51. The back baffle is L-shaped, and the clamping body has stepped grooves for fixing the back baffle. Specifically, there are 3-6 spring plungers 51, evenly distributed on the back baffle. The back baffle has fixing holes for placing the spring plungers. One end of the spring plunger is larger than the other, and the diameter of the smaller end of the spring plunger is smaller than the diameter of the fixing hole. The cross-shaped dovetail slider has a positioning groove 21 corresponding to the spring plunger. This allows one end of the spring plunger to extend out of the back baffle and directly act on the cross-shaped dovetail slider, playing a preliminary positioning role for the cross-shaped dovetail slider. This ensures that the cross-shaped dovetail slider does not shift or deflect when subjected to the force applied by the pressure claw, ensuring the effectiveness of clamping and the accuracy of positioning.

[0036] Example 2

[0037] In this embodiment, the multi-station automated lathe fixture uses a cross-shaped dovetail slider with a spring plunger for initial positioning of the workpiece, and then uses a spring pin for fine positioning under the action of the pressure jaws. Specifically, the cross-shaped dovetail slider can be manually adjusted or pushed by a cylinder, and the spring plunger is engaged in the positioning groove of the slider for initial positioning; then the fixture is locked, the pressure jaws press against the elastic pin, and the pin is inserted into the pin hole of the slider to achieve fine positioning.

[0038] During operation, the dovetail slide 2 has a locating pin 9 on its clamping surface, and the workpiece 10 has a reference locating hole that mates with the locating pin 9, which fixes the workpiece on the clamping surface. Then, the dovetail slide 2 is installed onto the fixture, and its position is adjusted manually or pneumatically to bring the workpiece to the first processing position. If pneumatic, a cylinder is located on one side of the fixture, and its output end mates with the dovetail slide to drive it to slide along the fixture. Next, the dovetail slide 2 is initially positioned by the spring stop of the back baffle 5. Then, the pressure jaws 3 are locked, and the elastic pin, pushed by the pressure jaws, engages with the slide pin hole of the dovetail slide, ensuring precise positioning of the slide and guaranteeing the quality of subsequent processing. After the first station's processing is completed, the pressure jaws are released, the cross-shaped dovetail slide is moved to the second station, the pressure jaws are locked again, and processing at the second station begins until the part is finished. Finally, the pressure jaws are released, and the cross-shaped dovetail slide returns to its original position. This invention's structure saves workshop processing capacity, reduces manpower requirements, makes operation more convenient, and increases processing efficiency.

[0039] In summary, the advantages of this utility model are as follows:

[0040] 1. This fixture uses a cross-shaped dovetail slider to adjust the machining position and ensure that the parts are precisely positioned.

[0041] 2. This fixture enables the machining of linear multi-station parts on a single fixture, reducing fixture procurement costs.

[0042] 3. The turning position of this fixture can also be adjusted by a cylinder using a cross-shaped dovetail slider, reducing manual operation.

[0043] 4. This fixture uses a spring plunger for coarse positioning and an elastic pin for fine positioning, resulting in high repeatability and simple operation.

[0044] 5. This fixture can reduce operator time and improve production efficiency.

[0045] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A multi-station automatic lathe fixture for CNC lathes, comprising a fixture body, characterized in that: The fixture body is equipped with a sliding cross-shaped dovetail slider. One side of the cross-shaped dovetail slider is a work surface for clamping the workpiece to fix it, and the other side is equipped with a back baffle. The fixture body is equipped with a sliding pressure jaw, which is configured to cooperate with the cross-shaped dovetail slider. The workpiece is placed between the pressure jaw and the cross-shaped dovetail slider, and a movable pressure block is provided between the pressure jaw and the workpiece.

2. A multi-station automatic lathe fixture for CNC lathes according to claim 1, characterized in that: The bottom of the cross-shaped dovetail slider has a raised horizontal locking strip, and the clamping body has a horizontal locking groove that mates with the horizontal locking strip; the bottom of the pressure claw has a raised vertical locking strip, and the clamping body has a vertical locking groove that mates with the vertical locking strip, with the horizontal locking groove and the vertical locking groove connected.

3. A multi-station automatic lathe fixture for CNC lathes according to claim 2, characterized in that: An elastic pin is provided between the cross-shaped dovetail slider and the pressure claw. The cross-shaped dovetail slider has a slider pin hole that mates with the elastic pin. A compression spring is fitted on the elastic pin. The elastic pin is set in a longitudinal slot. The clamping body has a spring pin pressing block that mates with the elastic pin.

4. A multi-station automatic lathe fixture for CNC lathes according to claim 1, characterized in that: The back panel is fixed to the cross-shaped dovetail slider by a pluggable spring plunger. The back panel is L-shaped, and the clamp has a stepped groove for fixing the back panel.

5. A multi-station automatic lathe fixture for CNC lathes according to claim 4, characterized in that: There are 3-6 spring plungers, evenly distributed on the back baffle. The back baffle has fixing holes for placing the spring plungers. One end of the spring plunger is larger than the other end, and the diameter of the small end of the spring plunger is smaller than the diameter of the fixing hole.

6. A multi-station automatic lathe fixture for CNC lathes according to claim 1, characterized in that: The work surface for clamping the part is provided with a locating pin, and the workpiece is provided with a reference locating hole that mates with the locating pin.

7. A multi-station automatic lathe fixture for CNC lathes according to claim 1, characterized in that: A cylinder is provided on one side of the clamp body. The output end of the cylinder cooperates with the cross-shaped dovetail slider to drive the cross-shaped dovetail slider to slide along the clamp body.

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