Positioning and clamping device for double-flat-position through hole connecting piece

Abstract

The utility model discloses a positioning and clamping device for a double-flat-position through hole connecting piece. The positioning and clamping device comprises an elastic chuck and a pair of elastic plug pin assemblies. The elastic chuck is connected with a clamping driving device of a machine tool, an inserting groove and a pair of mounting holes are formed in the elastic chuck, the axis of the inserting groove coincides with the axis of the elastic chuck, and the two mounting holes are oppositely formed and located in the upper side and the lower side of the inserting groove respectively. Each elastic plug pin assembly is correspondingly arranged in the corresponding installation hole, one end of each elastic plug pin assembly extends into the corresponding insertion groove, and the two elastic plug pin assemblies are matched to form a wedge structure which is used for positioning the through hole of the connecting piece. During clamping, the flat position on one side of the connecting piece is inserted into the insertion groove, self-positioning of the flat position through hole is achieved by means of the characteristics of the spring and the structural design of the wedge, and then the flat position of the connecting piece is clamped through the elastic chuck so as to achieve clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical machine tool processing, in particular to a positioning and clamping device for a double-flat through-hole connector. Background Art

[0002] If the processing is similar Figure 1 When a connector with double flat through holes is used, in order to meet the axial position relationship between the two through holes and the middle rod, the generally used processing methods are:

[0003] One is to turn the rod first, and then process the double flats and through holes by punching or drilling. This process solution requires the rod size accuracy to be higher than the drawing requirements to compensate for the clamping positioning error of subsequent drilling or punching, which makes the size accuracy control excessive and increases the processing cost;

[0004] The other method is to first process the double flats and through holes, and then cut the rod. In this process, the dimensional accuracy of the turned rod is equivalent to the requirements of the drawing, but under the condition of using the flat through hole as the positioning reference, either bolt locking positioning or sleeve positioning is used. The clamping operation is cumbersome, which increases the complexity of clamping and reduces the overall processing efficiency. Utility Model Content

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a positioning and clamping device for double-flat through-hole connectors, by improving the positioning and clamping method of the flat through-holes and adding an elastic hole pin positioning structure on the basis of the elastic chuck, so that the chuck has a self-positioning and correction function for the flat through-holes, thereby reducing the steps of manual clamping, simplifying the clamping operation and improving the overall processing efficiency under general clamping conditions.

[0006] The first technical solution of the utility model is as follows:

[0007] A positioning and clamping device for a double-flat through-hole connector comprises: an elastic chuck and a pair of elastic latch assemblies; the elastic chuck is provided with an insertion slot and a pair of mounting holes, the two mounting holes are arranged opposite to each other, the two mounting holes are respectively and simultaneously located at the upper and lower sides of the insertion slot, each of the elastic latch assemblies is correspondingly arranged in one of the mounting holes, one end of the elastic latch assemblies extends into the insertion slot, and the two elastic latch assemblies cooperate to form an inclined wedge structure.

[0008] Furthermore, the mounting hole includes a stepped hole and a threaded blind hole, the stepped hole is located on a side close to the insertion slot, the elastic latch assembly is installed in the threaded blind hole, and one end of the elastic latch assembly can pass through the stepped hole and extend into the insertion slot.

[0009] Furthermore, the elastic latch assembly includes: a positioning pin, a locking block, and a spring; the positioning pin is slidably arranged in the mounting hole, one end of the positioning pin passes through the step hole and extends into the insertion groove; the locking block is provided with an external thread adapted to the threaded blind hole, the locking block is located on a side of the positioning pin away from the step hole, and the spring is arranged between the positioning pin and the locking block.

[0010] Furthermore, the positioning pin includes a limiting rod, a step flange and a limiting ball; the locking block is provided with a sliding hole, the limiting rod and the sliding hole are slidably matched, the step surface of the step hole abuts against the step flange, and the limiting ball has an arc surface.

[0011] Furthermore, the cross section of the sliding hole is a regular hexagon, and the outer contour of the limiting rod is adapted to the cross section of the sliding hole.

[0012] Furthermore, the elastic clamp has two pairs of expansion slots, and the expansion slots are opened along the diagonal edges of the insertion slot.

[0013] Furthermore, the elastic clamp is also provided with a plurality of extension holes, and each extension hole is connected to a corresponding expansion slot.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] First, insert the flat part of one side of the connector into the insertion groove, use the characteristics of the spring and the wedge structure design to achieve self-positioning of the flat part through hole, and then clamp the flat part of the connector through the elastic clamp to achieve clamping. In this way, the clamping and positioning requirements of the flat part through hole of the connector can be met with simple operations, thereby improving the overall processing efficiency and reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 is a stereogram of a connector in the background art;

[0018] Figure 2 It is a three-dimensional diagram of the positioning and clamping device in the utility model;

[0019] Figure 3 It is a front view of the positioning and clamping device in the utility model;

[0020] Figure 4 It is a cross-sectional view of the positioning clamping device in the utility model (clamping state);

[0021] Figure 5 It is a cross-sectional view of the elastic chuck in the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the positioning pin in the utility model;

[0023] Explanation of the accompanying numbers: 1-connector; 11-flat position; 101-through hole; 12-rod; 2-elastic chuck; 21-insertion slot; 22-mounting hole; 221-step hole; 222-threaded blind hole; 23-expansion slot; 24-extension hole; 3-elastic latch assembly; 31-locating pin; 311-limiting rod; 312-step flange; 313-limiting ball; 32-locking block; 321-sliding hole; 33-spring. DETAILED DESCRIPTION

[0024] In order to facilitate a better understanding of the purpose, structure, features and efficacy of the utility model, the utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that the features shown in the figures are not necessarily drawn to scale. In addition, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In addition, in the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] like Figure 1-6As shown, the present embodiment provides a positioning and clamping device for clamping the double-flat position connector 1 in the background technology; the connector 1 is first processed with the flat positions 11 and the through hole 101 on both sides, and when the rod 12 is turned, the positioning and clamping device is used to clamp the flat position 11 and the through hole 101 of the connector 1 to cut the rod 12, and finally the production of the connector 1 with double flat positions 11 and through holes 101 is realized.

[0027] like Figure 2-4 As shown, the positioning and clamping device comprises: an elastic chuck 2, a pair of elastic latch assemblies 3; the elastic chuck 2 is connected to the clamping drive device of the machine tool, the elastic chuck 2 is provided with an insertion slot 21 and a pair of mounting holes 22, the axis of the insertion slot 21 coincides with the axis of the elastic chuck 2, the two mounting holes 22 are arranged opposite to each other, the two mounting holes 22 are respectively and located at the upper and lower sides of the insertion slot 21, each of the elastic latch assemblies 3 is correspondingly arranged in one of the mounting holes 22, one end of the elastic latch assemblies 3 extends into the insertion slot 21, and the two elastic latch assemblies 3 cooperate to form an inclined wedge structure for positioning the through hole 101 of the connector 1;

[0028] First, insert the flat part 11 on one side of the connector 1 into the insertion groove 21, and use the characteristics of the spring 33 and the wedge structure design to achieve self-positioning of the through hole 101 of the flat part 11, and then clamp the flat part 11 of the connector 1 through the elastic clamp 2 to achieve clamping. In this way, with simple operations, the clamping and positioning requirements of the through hole 101 of the flat part 11 of the connector 1 can be met, thereby improving the overall processing efficiency and reducing the processing cost. Figure 5 As shown, as a preferred solution, the mounting hole 22 includes a coaxially arranged step hole 221 and a threaded blind hole 222, the step hole 221 is located on a side close to the insertion slot 21, the elastic latch assembly 3 is installed in the threaded blind hole 222, and one end of the elastic latch assembly 3 can pass through the step hole 221 and extend into the insertion slot 21.

[0029] like Figure 4As shown, further, the elastic latch assembly 3 includes: a positioning pin 31, a locking block 32, and a spring 33; the positioning pin 31 is slidably arranged in the mounting hole 22, and one end of the positioning pin 31 passes through the step hole 221 and extends into the insertion groove 21; the locking block 32 is provided with an external thread adapted to the threaded blind hole 222, the locking block 32 is located on a side of the positioning pin 31 away from the step hole 221, and the spring 33 is arranged between the positioning pin 31 and the locking block 32. The step hole 221 is used to limit one side of the locating pin 31, and the locking block 32 is used to limit the other side of the locating pin 31. Under the action of elastic force, the spring 33 applies a force to the locating pin 31 so that the locating pin 31 remains extended into the insertion groove 21. In addition, the depth of the locking block 32 can be adjusted to control the compression amount of the spring 33, thereby adjusting the clamping force of the locating pin 31 on the through hole 101 in the flat position 11 of the connecting member 1 and the feeding force.

[0030] like Figure 6 As shown, further, the positioning pin 31 includes a limiting rod 311, a step flange 312 and a limiting ball 313; the locking block 32 is provided with a sliding hole 321, and the limiting rod 311 and the sliding hole 321 are slidably matched; the step surface of the step hole 221 abuts against the step flange 312 to axially limit the positioning pin 31, and the positioning pin 31 is ensured to maintain axial sliding through the cooperation of the locking block 32 and the step hole 221; the limiting ball 313 has an arc surface, and the convex arc surface is selected as the guide design for feeding and picking up parts to form the inclined wedge structure, which can reduce the difficulty of feeding and picking up materials.

[0031] like Figure 2 As shown, preferably, the cross section of the sliding hole 321 is a regular hexagon, and the outer contour of the limiting rod 311 is adapted to the cross section of the sliding hole 321; thus, the installation and position adjustment of the locking block 32 can be achieved by a hexagonal screw.

[0032] like Figure 2 , 3 As shown in Figure 5, as a preferred solution, the elastic clamp 2 has two pairs of expansion slots 23, the cross-section of the insertion slot 21 is rectangular, and the expansion slots 23 are opened along the diagonal of the insertion slot 21, so that the elastic clamp 2 is formed with two groups of clamping parts that are symmetrical in the upper and lower directions and in the left and right directions, respectively, and the flat part 11 of the connecting member 1 is clamped in the upper and lower directions and in the left and right directions through the two groups of clamping parts.

[0033] like Figure 2 , 3As shown in FIG. 5 , further, the elastic clamp 2 is also provided with a plurality of extension holes 24 , and each extension hole 24 is connected to a corresponding expansion slot 23 , which is beneficial to the elastic deformation and resetting of the elastic clamp 2 .

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A positioning and clamping device for a double-flat through-hole connector, characterized in that: include: An elastic chuck (2) and a pair of elastic latch assemblies (3); the elastic chuck (2) is provided with an insertion slot (21) and a pair of mounting holes (22), the two mounting holes (22) are arranged opposite to each other, the two mounting holes (22) are respectively and simultaneously located at the upper and lower sides of the insertion slot (21), each of the elastic latch assemblies (3) is correspondingly arranged in one of the mounting holes (22), one end of the elastic latch assemblies (3) extends into the insertion slot (21), and the two elastic latch assemblies (3) cooperate to form an inclined wedge structure.

2. A positioning and clamping device for a double-flat through-hole connector according to claim 1, characterized in that: The mounting hole (22) comprises a stepped hole (221) and a threaded blind hole (222); the stepped hole (221) is located on a side close to the insertion slot (21); the elastic latch assembly (3) is mounted in the threaded blind hole (222); and one end of the elastic latch assembly (3) can pass through the stepped hole (221) and extend into the insertion slot (21).

3. A positioning and clamping device for a double-flat through-hole connector according to claim 2, characterized in that: The elastic latch assembly (3) comprises: a positioning pin (31), a locking block (32), and a spring (33); the positioning pin (31) is slidably arranged in the mounting hole (22), one end of the positioning pin (31) passes through the step hole (221) and extends into the insertion groove (21); the locking block (32) is provided with an external thread adapted to the threaded blind hole (222), the locking block (32) is located on a side of the positioning pin (31) away from the step hole (221), and the spring (33) is arranged between the positioning pin (31) and the locking block (32).

4. A positioning and clamping device for a double-flat through-hole connector according to claim 3, characterized in that: The positioning pin (31) comprises a limiting rod (311), a step flange (312) and a limiting ball (313); the locking block (32) is provided with a sliding hole (321), the limiting rod (311) and the sliding hole (321) are slidably matched, the step surface of the step hole (221) and the step flange (312) are in abutment, and the limiting ball (313) has an arc surface.

5. A positioning and clamping device for a double-flat through-hole connector according to claim 4, characterized in that: The cross section of the sliding hole (321) is a regular hexagon, and the outer contour of the limiting rod (311) is adapted to the cross section of the sliding hole (321).

6. A positioning and clamping device for a double-flat through-hole connector according to claim 1, characterized in that: The elastic clamp (2) has two pairs of expansion slots (23), and the expansion slots (23) are opened along the diagonal edges of the insertion slot (21).

7. A positioning and clamping device for a double-flat through-hole connector according to claim 6, characterized in that: The elastic clamp (2) is also provided with a plurality of extension holes (24), and each extension hole (24) is connected to a corresponding expansion slot (23).

Images