A product hold down mechanism

Abstract

The utility model relates to tool fixture and precision positioning technical field, concretely provides a product top tight mechanism. The product top tight mechanism includes base, scale cylinder, positioning round seat, vertical lifting rod, manual knob, universal joint axle and universal head, scale cylinder lower end boss is connected fixedly with the base, the positioning round seat is located below the base and is arranged coaxially with the scale cylinder, the vertical lifting rod penetrates scale cylinder, base and positioning round seat in proper order, the manual knob is connected with the lower end of vertical lifting rod, the universal joint axle is fixed in the top of vertical lifting rod through the lock nut, and the universal head and universal joint axle form spherical pair connection. The product top tight mechanism can complete the accurate adjustment operation of matching gauge and sample frame with the piece.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts inspection tools, and in particular to a product clamping mechanism. Background Technology

[0002] With the rapid development of modern manufacturing, increasingly higher requirements are being placed on the positioning accuracy and clamping stability of workpieces during processing, assembly, and inspection. In machining processes, reliable clamping of the workpiece is a prerequisite for ensuring dimensional accuracy; in product inspection, stable clamping of the workpiece is key to ensuring the accuracy of inspection data.

[0003] However, existing clamping mechanisms still have many shortcomings: 1. Insufficient adjustment precision: Most clamping mechanisms lack precise scale markings for lifting and lowering adjustment, relying on the operator's experience or rough markings for adjustment, which can easily cause workpiece positioning deviations during the adjustment of the fixture or sample holder.

[0004] 2. Poor angle adaptability: The clamping head is mostly designed with a fixed angle, which cannot be adaptively adjusted according to the tilt angle or curved shape of the workpiece surface.

[0005] 3. Insufficient connection reliability: The fixing structure with external carriers (such as gauges and sample holders) is simple in design and lacks precise positioning and locking mechanisms.

[0006] 4. Poor ease of operation: The lifting drive method of some clamping mechanisms is poorly designed, making the adjustment process laborious and inefficient, and making it difficult to achieve precise clamping quickly.

[0007] Therefore, how to provide a product clamping mechanism that has precise adjustment scale, adaptive multi-angle clamping, accurate and reliable connection with external carrier, and convenient operation, in order to solve the problems of low adjustment accuracy, poor angle adaptability, unstable connection and inconvenient operation in the existing technology, has become an urgent problem to be solved. Utility Model Content

[0008] In view of this, in order to overcome the shortcomings of the prior art, the present invention aims to provide a product clamping mechanism.

[0009] This utility model provides a product clamping mechanism, which includes: a base, a graduated cylinder, a positioning round seat, a vertical lifting rod, a locking nut, a manual knob, a universal connecting shaft, and a universal head; the lower end boss of the graduated cylinder is connected and fixed to the base, the positioning round seat is located below the base and is coaxial with the graduated cylinder, the vertical lifting rod passes through the graduated cylinder, the base, and the positioning round seat in sequence, the manual knob is connected to the lower end of the vertical lifting rod, the universal connecting shaft is fixed to the top end of the vertical lifting rod by the locking nut, and the universal head and the universal connecting shaft form a spherical joint connection.

[0010] Preferably, the base is L-shaped, with a positioning structure at one end and a locking hole at the other end for locking with the graduated cylinder.

[0011] Preferably, the positioning structure includes fastener positioning holes and positioning pin holes located at the corresponding ends of the base.

[0012] Preferably, the lower end boss of the graduated cylinder is inserted into the through hole of the base, and is fixed to the base by the locking component in the locking hole.

[0013] Preferably, the outer wall of the graduated cylinder is provided with a graduated groove and a graduated line, and the surface of the vertical lifting rod is provided with a graduated indicator groove. The relative displacement between the graduated indicator groove and the graduated line is used to display the lifting adjustment amount.

[0014] Preferably, the ball joint of the universal joint shaft at the front end and the groove of the universal joint head are connected by spherical matching to achieve multi-degree-of-freedom rotational connection.

[0015] Preferably, the lower end of the universal joint shaft is inserted into the corresponding hole of the vertical lifting rod, and the locking nut is fixed to the top of the vertical lifting rod and set on the outer periphery of the universal joint shaft.

[0016] Preferably, the vertical lifting rod is stepped and is assembled to correspond to the T-shaped through hole of the graduated cylinder.

[0017] The device of this utility model has the following beneficial technical effects: 1. Adjustment precision is controllable The scale lines on the graduated cylinder match the scale indicator groove on the vertical lifting rod, visually displaying the lifting adjustment amount, which facilitates fine adjustment when carrying parts on the fixture or sample holder.

[0018] 2. High adaptability The ball joint of the universal connector shaft is connected to the spherical joint of the universal head groove, enabling the universal head to rotate with multiple degrees of freedom. This can adapt to the clamping requirements of workpieces at different angles or curved surfaces, and avoid local stress damage.

[0019] 3. Stable positioning The base is precisely fixed to the external carrier through fastener positioning holes and positioning pin holes. Combined with the locking structure between the graduated cylinder and the base, it prevents overall loosening and ensures a stable top position.

[0020] 4. Convenient and efficient height adjustment The vertical lifting rod can be driven to move up and down along the axis directly by a manual knob. The operation is simple and intuitive, and the coarse and fine adjustments of the clamping height can be completed without complicated tools. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a product clamping mechanism according to an embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of a product clamping mechanism according to an embodiment of this application; Figure 3 This is a partial schematic diagram of a product clamping mechanism according to an embodiment of this application; In the diagram, 1-base, 2-scale cylinder, 3-vertical lifting rod, 4-universal connecting shaft, 5-universal head, 6-locking nut, 7-positioning round seat, 8-manual knob, 11-fastener positioning hole, 12-positioning pin hole, 13-locking hole, 21-scale groove, 211-scale line, 31-scale indicator groove, 41-universal connecting shaft ball head, 51-universal head groove. Detailed Implementation

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and 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 this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Figure 1 This is a schematic diagram of a product clamping mechanism according to an embodiment of this application; as shown... Figure 1As shown, in this embodiment, a product clamping mechanism includes a base 1, a scale cylinder 2, a vertical lifting rod 3, a universal connecting shaft 4, a universal head 5, a locking nut 6, a positioning round seat 7, and a manual knob 8.

[0027] Specifically, the base 1 is a basic support component, generally L-shaped. One end of the base 1 has a fastener positioning hole 11 and a positioning pin hole 12, and the other end has a locking hole 13. The lower end boss of the scale cylinder 2 is inserted into the through hole of the base 1. The locking assembly (not shown in the figure) locks the scale cylinder 2 and the base 1 through the locking hole 13. The positioning round seat 7 is fixed below the base 1 at the same end as the scale cylinder 2. The vertical lifting rod 3 passes through the interior of the scale cylinder 2, the base 1, and the positioning round seat 7, and its lower end is inserted into the hole of the manual knob 8. The universal connecting shaft 4 is installed and fixed to the front end of the vertical lifting rod 3 by the locking nut 6. The front end of the universal connecting shaft 4 is connected to the universal head 5.

[0028] Figure 2 This is a cross-sectional schematic diagram of a product clamping mechanism according to an embodiment of this application; as shown Figure 2 As shown, in this embodiment, the universal joint shaft ball end 41 at the front end of the universal joint shaft 4 and the groove 51 of the universal head 5 form a spherical joint connection. With the help of the matching contact of the spherical surfaces, the universal head 5 can rotate around the center of the ball end 41 to achieve multiple degrees of freedom, thereby flexibly adapting to products with different angles. The universal joint shaft 4 is inserted into the hole at the front end of the vertical lifting rod 3 and is axially fixed by the locking nut 6.

[0029] According to the optional example, in this embodiment, the scale cylinder 2 has a T-shaped through hole inside, and the vertical lifting rod 3 has a stepped rod structure with its small end facing downward. The vertical lifting rod 3 and the T-shaped through hole of the scale cylinder 2 form a suitable sliding fit, which can slide stably along the axial direction of the T-shaped through hole; at the same time, the lower end of the T-shaped through hole of the scale cylinder 2 forms an axial limit on the stepped surface of the vertical lifting rod 3, which can effectively limit the maximum downward stroke of the vertical lifting rod 3 and prevent it from dislodging from the scale cylinder 2. This ensures the guiding accuracy of the vertical lifting rod 3 during the sliding process, and also prevents structural interference or over-travel problems caused by excessive lifting through mechanical limiting, thereby ensuring the operational stability and safety of the clamping mechanism during the belt adjustment process.

[0030] According to an optional example, in this embodiment, the base 1 is fitted with fasteners through fastener positioning holes 11, and positioning pins are inserted into positioning pin holes 12 to achieve precise fixation with the fixture or sample holder. The vertical lifting rod 3 is raised and lowered under the drive of the manual knob 8, which drives the universal head 5 to move synchronously. The contact between the universal head 5 and the product achieves a clamping action. Combined with the universal adjustment of the head and the lifting amount controlled by the scale, the precise position of the product can be adjusted when matching the fixture or sample holder to meet the accuracy requirements of assembly or testing.

[0031] Figure 3This is a partial schematic diagram of a product clamping mechanism according to an embodiment of this application; as shown... Figure 3 As shown, the graduated cylinder 2 has a graduated groove 21 and graduated lines 211 within the groove. The graduated groove 21 has a semi-circular groove structure, and the graduated lines 211 are engraved on the bottom of the groove. The vertical lifting rod 3 is exposed in the section corresponding to the graduated groove 21, and its surface has a graduated indicator groove 31. This graduated indicator groove 31 is precisely aligned with the graduated lines 211 of the graduated cylinder 2. When the vertical lifting rod 3 is raised or lowered by manually turning the knob 8, the change in the relative position of the graduated indicator groove 31 and the graduated lines 211 can intuitively reflect the adjustment amount, achieving precise axial dimension control.

[0032] The application principle of the product clamping mechanism in this embodiment of the utility model is as follows: First, place the base 1 in the corresponding position on the fixture or sample holder. Install the fasteners through the fastener positioning holes 11 on the base 1, and simultaneously insert the positioning pins into the positioning pin holes 12 to ensure a secure connection between the base 1 and the fixture or sample holder. In use, first, based on the approximate position of the product to be adjusted, turn the manual knob 8 to drive the vertical lifting rod 3 to rise and fall axially along the scale cylinder 2. Observe the scale indicator groove 31 on the vertical lifting rod 3 and the scale line 211 within the scale groove 21 of the scale cylinder 2. Adjust the universal head 5 to a height close to that of the product to complete the coarse adjustment.

[0033] Once the universal head 5 approaches the product, manually turn it to align its contact surface with the product surface and adjust it to fit the product angle. Then, continue to fine-tune the manual knob 8 to tighten the universal head 5 against the product. During this process, control the tightness by observing the correspondence between the scale indicator groove 31 and the scale line 211 to complete the belt adjustment.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A product clamping mechanism, characterized in that, The product clamping mechanism includes a base (1), a scale cylinder (2), a positioning round seat (7), a vertical lifting rod (3), a locking nut (6), a manual knob (8), a universal connecting shaft (4), and a universal head (5). The lower end boss of the scale cylinder (2) is connected and fixed to the base (1). The positioning round seat (7) is located below the base (1) and is coaxial with the scale cylinder (2). The vertical lifting rod (3) passes through the scale cylinder (2), the base (1), and the positioning round seat (7) in sequence. The manual knob (8) is connected to the lower end of the vertical lifting rod (3). The universal connecting shaft (4) is fixed to the top of the vertical lifting rod (3) by the locking nut (6). The universal head (5) and the universal connecting shaft (4) form a spherical joint connection.

2. The product clamping mechanism according to claim 1, characterized in that, The base (1) is L-shaped, with a positioning structure at one end and a locking hole (13) at the other end for locking with the scale cylinder (2).

3. The product clamping mechanism according to claim 2, characterized in that, The positioning structure includes fastener positioning holes (11) and positioning pin holes (12) located at the corresponding ends of the base (1).

4. The product clamping mechanism according to claim 2, characterized in that, The lower end protrusion of the graduated cylinder (2) is inserted into the through hole of the base (1) and is fixed to the base (1) by the locking component in the locking hole (13).

5. The product clamping mechanism according to claim 1, characterized in that, The outer wall of the scale cylinder (2) is provided with a scale groove (21) and a scale line (211), and the surface of the vertical lifting rod (3) is provided with a scale indicator groove (31). The relative displacement between the scale indicator groove (31) and the scale line (211) is used to display the lifting adjustment amount.

6. The product clamping mechanism according to claim 1, characterized in that, The universal joint shaft ball head (41) at the front end of the universal joint shaft (4) and the universal joint groove (51) of the universal joint head (5) achieve multi-degree-of-freedom rotational connection through spherical matching.

7. The product clamping mechanism according to claim 1, characterized in that, The lower end of the universal connecting shaft (4) is inserted into the corresponding hole of the vertical lifting rod (3), and the locking nut (6) is fixed to the top of the vertical lifting rod (3) and set on the outer periphery of the universal connecting shaft (4).

8. The product clamping mechanism according to claim 1, characterized in that, The vertical lifting rod (3) is stepped and is assembled to correspond to the T-shaped through hole of the scale cylinder (2).

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