Fixed-length drilling clamp for proportional electromagnet armature assembly

Abstract

A fixed-length drilling clamp for a proportion electromagnet armature assembly comprises a base, a fixed-length tool and a groove-shaped positioning block are fixedly installed on the base, the fixed-length tool is provided with a first positioning face and a second positioning face from back to front, a clamping device is arranged behind the groove-shaped positioning block, the clamping device comprises a fixed block fixedly arranged on the base, and the fixed-length tool is provided with a first positioning face and a second positioning face. A through hole in the front-back direction is formed in the fixing block, an internal thread is machined at the rear end of the through hole, a jacking sliding block is installed in the through hole in a sliding mode, a middle hole is formed in the jacking sliding block, a shaft shoulder part is arranged at the front end of the middle hole, a variable-diameter jacking block with the small front part and the large rear part is installed on the front portion of the middle hole in a sliding mode, the small-diameter part of the jacking block penetrates through the shaft shoulder part, and a thread is arranged at the rear end of the middle hole. An adjusting jackscrew is screwed on the thread, a spring is installed between the adjusting jackscrew and the ejecting block, the front portion of the ejecting sliding block is provided with an extending portion extending forwards, and an external thread barrel is screwed on the thread on the rear portion of the through hole. The fixture is accurate and stable in positioning and high in clamping efficiency.

Description

Technical Field

[0001] This utility model relates to electromagnets, and in particular to a fixed-length drilling fixture for a proportional electromagnet armature assembly, belonging to the field of electromagnet production tooling technology. Background Technology

[0002] In the production of proportional electromagnets, depending on the requirements of the application, a radial hole needs to be drilled at a predetermined position on the armature assembly to penetrate the armature and the push rod. Because the length of the push rod extending beyond the armature needs to be quite precise, the relative position of the push rod and the armature also needs to be very precise during drilling. In the traditional production method, the push rod and the armature are first slightly riveted together and then clamped onto a fixture for drilling. This method requires a riveting process first, and during the drilling process, the relative forces generated by the armature and the assembly components can cause the riveted parts to loosen. This loosening will have a negative impact on the drilling process. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the existing fixed-length drilling of proportional electromagnet armature assemblies and to provide a fixed-length drilling fixture for proportional electromagnet armature assemblies.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: A proportional electromagnet armature assembly fixed-length drilling fixture includes a base. A fixed-length fixture and a slotted positioning block are fixedly installed on the base from front to back. The fixed-length fixture has a first positioning surface and a second positioning surface from back to front. The slotted positioning block is used for left and right positioning of the armature. A clamping device is provided behind the slotted positioning block. The clamping device includes a fixing block fixedly mounted on the base. The fixing block has a through hole in the front-back direction. An internal thread is machined near the rear end of the through hole. A clamping slider is slidably installed in the through hole. The clamping slider has a central hole. The front end of the central hole has a shoulder. A [missing information - likely a component or part] is slidably installed in front of the central hole. The variable-diameter top block has a smaller diameter at the front and a larger diameter at the back. The smaller diameter of the top block passes through the shoulder of the shaft, while the larger diameter of the top block is larger than the diameter of the constricted hole at the shoulder. The rear end of the central hole has a thread, and an adjusting screw is screwed onto the thread. A spring is installed between the adjusting screw and the top block. After the armature is placed in the slotted positioning block, the top block and the push rod are aligned front and back. The front part of the clamping slider has a forward-extending extension. An external threaded sleeve is screwed onto the thread at the rear of the through hole. When the sleeve is rotated, it can push the clamping slider forward so that the extension presses against the rear end face of the armature, and the front end face of the armature presses against the second positioning surface. At the same time, the front end face of the push rod presses against the first positioning surface, and the rear end face presses against the top block.

[0005] Furthermore, a slot is provided on the base, and the fixed-length tooling and the slot-shaped positioning block are installed in close fit in the slot.

[0006] Furthermore, the grooved positioning block is a V-groove positioning block.

[0007] Furthermore, a long groove is provided on the top-tightening slider, and a pin hole is provided on the wall of the through hole. A limit pin is installed in the pin hole, and the inner end of the limit pin is located in the long groove.

[0008] The positive and beneficial technical effects of this utility model are: the positioning is accurate and stable, the clamping efficiency is high, and the relative position of the push rod and the armature is guaranteed. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the front and rear directions of this utility model.

[0010] Figure 2 This is a schematic diagram of a fixed-length tooling in the direction from back to front.

[0011] Figure 3 This is a schematic diagram of the V-groove positioning block in the front and back directions.

[0012] Figure 4 This is a schematic diagram of the front end face of the extension. Detailed Implementation

[0013] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0014] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: base; 2: fixed-length tooling; 3: V-groove positioning block; 301: V-groove; 4: first positioning surface; 5: second positioning surface; 501: notch; 6: fixing block; 7: tightening slider; 8: top block; 9: shaft shoulder; 10: adjusting screw; 11: spring; 12: extension; 1201: opening; 13: screw sleeve; 14: rotating handle; 15: long groove; 16: limiting pin; 17: armature; 18: push rod; 19: drilling target hole.

[0015] A proportional electromagnet armature assembly fixed-length drilling fixture includes a base 1, on which a fixed-length fixture 2 and a slotted positioning block are fixedly installed from front to back. In this embodiment, a slot is provided on the base, and the fixed-length fixture and the slotted positioning block are installed in close fit in the slot.

[0016] In this embodiment, the grooved positioning block is a V-groove positioning block 3. The fixed-length fixture has a first positioning surface 4 and a second positioning surface 5 from back to front. The distance between the first positioning surface and the second positioning surface is the length of the push rod extending out of the armature. The second positioning surface has a notch 501 to facilitate the insertion of the push rod. The grooved positioning block is used to position the armature left and right. After the armature is placed in the V-groove, it is positioned left and right. A clamping device is provided behind the grooved positioning block. The clamping device includes a fixing block 6 fixedly mounted on the base. The fixing block 6 has a through hole in the front-back direction. The through hole has an internal thread near the rear end. A top-clamping slider 7 is slidably installed in the through hole. The top-clamping slider has a central hole. The front end of the central hole has a shoulder 9. A variable-diameter top block 8 with a smaller front diameter and a larger rear diameter is slidably installed in front of the central hole. The smaller diameter of the top block passes through the shoulder. The larger diameter of the top block is larger than the diameter of the constricted hole at the shoulder. The rear end of the central hole... The end has a thread, and an adjusting screw 10 is screwed onto the thread. A spring 11 is installed between the adjusting screw 10 and the top block. The two ends of the spring abut against the top block and the adjusting screw, respectively. Adjusting the adjusting screw can adjust the clamping force of the top block on the push rod. After the armature 17 is placed in the slotted positioning block, the top block and the push rod 18 are aligned front and back. The front part of the clamping slider 7 has a forward-extending extension 12. In this embodiment, the extension has a receiving cavity 1202 for accommodating the push rod; the extension has an opening 1201 for inserting the push rod, so that the extension can have a large contact area with the armature. An external threaded sleeve 13 is screwed onto the thread at the rear of the through hole. In this embodiment, for easy rotation, a rotating handle is fixedly connected to the sleeve. When the sleeve 13 is rotated, the sleeve can push the clamping slider forward so that the extension presses against the rear end face of the armature and the front end face of the armature presses against the second positioning surface. At the same time, the front end face of the push rod presses against the first positioning surface and the rear end face presses against the top block. A long groove 15 is provided on the top-tightening slider, and a pin hole is provided on the through-hole arm. A limit pin 16 is installed in the pin hole. The inner end of the limit pin is located in the long groove. The limit pin can be screwed into the pin hole or fixedly installed in the pin hole. The limit pin restricts the rotation of the top-tightening slider, so that the opening 1201 always faces upward, which is convenient for inserting the workpiece.

[0017] When using this fixture, the threaded sleeve moves sequentially, allowing the armature to be placed into the V-groove. The push rod can then be positioned between the top block and the first positioning surface. After the armature is placed in the V-groove, the lower part of the armature partially overlaps with the second positioning surface in the front-back direction. After placing the workpiece, rotating the handle moves the threaded sleeve forward. During this forward movement, the threaded sleeve pushes the clamping slider forward, causing the extension to clamp the armature. Simultaneously, the top block clamps the push rod, allowing drilling to proceed. Figure 19 shows the target hole for drilling.

[0018] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. A fixed-length drilling fixture for a proportional electromagnet armature assembly, comprising a base, characterized in that: A fixed-length fixture and a slotted positioning block are fixedly installed on the base from front to back. The fixed-length fixture has a first positioning surface and a second positioning surface from back to front. The slotted positioning block is used to position the armature left and right. A clamping device is provided behind the slotted positioning block. The clamping device includes a fixing block fixedly mounted on the base. The fixing block has a through hole in the front-back direction. The through hole has an internal thread near the rear end. A top-clamping slider is slidably installed in the through hole. The top-clamping slider has a central hole. The front end of the central hole has a shoulder. A variable-diameter top block with a smaller front diameter and a larger rear diameter is slidably installed in front of the central hole. The small diameter of the top block passes through the shoulder, and the large diameter of the top block is larger than the diameter of the shrinkage hole at the shoulder. The rear end of the central hole has a thread, and an adjusting screw is screwed onto the thread. A spring is installed between the adjusting screw and the top block. After the armature is placed in the slotted positioning block, the top block and the push rod correspond to each other. The front part of the clamping slider has a forward-extending extension. A threaded sleeve is screwed onto the thread at the rear of the through hole. When the threaded sleeve is rotated, it can push the clamping slider forward so that the extension presses against the rear end face of the armature and the front end face of the armature presses against the second positioning surface. At the same time, the front end face of the push rod presses against the first positioning surface and the rear end face presses against the top block.

2. The proportional electromagnet armature assembly fixed-length drilling fixture according to claim 1, characterized in that: A slot is provided on the base, and the fixed-length tooling and the slot-shaped positioning block are installed in the slot in close fit.

3. The proportional electromagnet armature assembly fixed-length drilling fixture according to claim 1, characterized in that: The groove-shaped positioning block is a V-groove positioning block.

4. A proportional electromagnet armature assembly fixed-length drilling fixture according to claim 1, characterized in that: A long groove is provided on the top-tightening slider, and a pin hole is provided on the wall of the through hole. A limit pin is installed in the pin hole, and the inner end of the limit pin is located in the long groove.

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