Broach with measuring structure
By integrating the measurement structure on the broach and using the design of threaded connections and sliding arc blocks, the existing broach detection process is solved, and the accuracy of measuring the diameter of the workpiece keyway and changing the scale is achieved, improving the efficiency of improving the Processing accuracy.
Patent Information
- Application Number
- CN202323556206.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-26
AI Technical Summary
When using existing broaches, they need to frequently use measurement tools to detect the diameter of the workpiece keyway, resulting in a cumbersome and inefficient detection process.
A broach with a measuring structure is designed, including a knife body and a connecting block. A measuring part is arranged above the knife body, including a cylinder, an arc block, a positioning block and a scale. The arc block is connected by thread and sliding connection. It is stretched open during processing, and the sliding positioning block and scale are used to accurately measure the keyway diameter.
It realizes accurate measurement of the diameter of the workpiece keyway, improves machining accuracy, and can easily replace the scale when not in use, simplifying the detection process.
Smart Images
Figure CN222221311U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of broaches, in particular to a broach with a measuring structure. Background Art
[0002] Involute splines refer to splines with teeth on cylindrical (or conical) surfaces and involute tooth shapes. Involute splines are increasingly widely used. This is because involute splines have many advantages over rectangular splines, such as more teeth, thick tooth ends and tooth roots, strong load-bearing capacity, easy automatic centering, and high installation accuracy. The larger spline minor diameter under the same overall dimensions is conducive to increasing the rigidity of the shaft. Involute splines are easy to use cold rubbing, cold beating, cold extrusion and other chipless processing methods, with high production efficiency, high precision, and material saving. The processing of involute spline holes is inseparable from involute spline broaches.
[0003] When the existing broaches are in use, after the keyway is processed on the workpiece, most of them will also use measuring tools to detect the keyway diameter. At the same time, when testing the accuracy of the broach, it is also necessary to test the accuracy of the diameter of each section of the broach. At this time, other detection equipment is used to detect and compare the keyways section by section, and it is necessary to continuously use measuring tools to detect them on the outside of the equipment, which is very troublesome and inefficient. Utility Model Content
[0004] The purpose of the utility model is to provide a broach with a measuring structure to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a broach with a measuring structure, comprising a broach body and a connecting block, a measuring part is arranged above the broach body, and the measuring part comprises:
[0006] A cylinder, the bottom end of which is penetrated by the top end of the cutter body and threadedly connected, a through groove is provided on the side of the cylinder, the starting device pulls the cutter body through the connecting block to process the workpiece, when the cutter body is pulled, the threaded cylinder is driven to move, the through groove is penetrated by a square rod and slidably connected, and the end of the square rod away from the cylinder is fixedly connected to a limit plate;
[0007] An arc block, the arc block is penetrated by a square rod and slidably connected, a slider is fixedly connected to the right surface of the arc block, when the cutter body is pulled, the cylinder connected by the thread will be driven to move, and the arc block will gradually contact the outside of the device, so that the arc block is gradually stretched open, and the arc block is penetrated by a support rod and slidably connected;
[0008] A positioning block, the positioning block is penetrated by the slider and slidably connected thereto, and a positioning groove is provided on the inner side of the positioning block;
[0009] A scale, the left side of the scale is fixedly connected to the right side of the positioning block, and a scale groove is provided on the top surface of the scale. The outer edge and the inner edge of the arc block are compared and measured through the scale groove provided on the surface of the scale, so that the keyway diameter of the workpiece processed by the tool body is more accurate.
[0010] Preferably, the number of the arc blocks is two groups, and the two groups of arc blocks are symmetrically arranged with the center line of the cylinder as the symmetry axis.
[0011] Preferably, the support rod passes through the arc-shaped block, and the other end of the support rod passes through another group of the arc-shaped blocks.
[0012] Preferably, a telescopic spring is fixedly connected between the arc blocks close to another group of arc blocks.
[0013] Preferably, the cross section of the sliding block is T-shaped, and the positioning groove provided on the inner side of the positioning block is also T-shaped. The arc block is gradually opened, and when the arc block is opened, it expands to both sides along the support rod and the square rod.
[0014] Preferably, the bottom end of the cylinder has a smaller diameter and the top end has a larger diameter, and the bottom end and the top end of the cylinder have the same diameter as the bottom end and the top end of the knife body.
[0015] Compared with the prior art, the utility model provides a broach with a measuring structure, which has the following beneficial effects:
[0016] 1. The broach with a measuring structure has a small bottom end and a large top end of a cylinder and its diameter is synchronized with the cutter body. Therefore, when the cylinder is pulled, it will gradually contact the inner side of the arc block, causing the arc block to be gradually stretched open. When the arc block is stretched open, it will expand to both sides along the support rod and the square rod. When the arc block expands, the arc block will slide along the positioning groove opened on the inner side of the positioning block through the slider. The outer edge and the inner edge of the arc block are compared and measured through the scale groove opened on the surface of the scale, so that the staff can know the keyway diameter of the workpiece that has been processed by the cutter body, so that the keyway diameter processed by the cutter body on the workpiece can be more accurate.
[0017] 2. The broach with measuring structure has a cylinder connected by threads. When not in use, the measuring part can be removed and the tool body can be used directly. The scale in the measuring part can also be replaced, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;
[0019] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the utility model;
[0021] Figure 4 This is a partially expanded and enlarged structural schematic diagram of the utility model;
[0022] Figure 5 For this utility model Figure 4 A is a schematic diagram of the enlarged structure.
[0023] In the figure: 1. knife body; 2. measuring part; 21. cylinder; 22. square rod; 23. through groove; 24. limit plate; 25. arc block; 26. slider; 27. support rod; 28. positioning block; 29. positioning groove; 210. scale; 211. scale groove; 212. telescopic spring; 3. connecting block. DETAILED DESCRIPTION
[0024] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a broach with a measuring structure, comprising a broach body 1 and a connecting block 3, a measuring part 2 is arranged above the broach body 1, and the measuring part 2 comprises: a cylinder 21, a square rod 22, a through groove 23, a limit plate 24, an arc block 25, a slider 26, a support rod 27, a positioning block 28, a positioning groove 29, a scale 210, a scale groove 211, and a telescopic spring 212.
[0025] The bottom end of the cylinder 21 is penetrated by the top end of the cutter body 1 and threadedly connected, and a through groove 23 is provided on the side of the cylinder 21. When the cutter body 1 is used, the cutter body 1 is penetrated through the workpiece to be processed, and then the connecting block 3 fixedly connected to the bottom surface of the cutter body 1 is clamped firmly through the equipment, and the equipment is started to pull the cutter body 1 through the connecting block 3 to process the workpiece. When the cutter body 1 is pulled, the threaded cylinder 21 is driven to move, and the through groove 23 is penetrated by the square rod 22 and slidably connected. The end of the square rod 22 away from the cylinder 21 is fixedly connected to the limiting plate 24, and the arc block 25 is penetrated by the square rod 22 and slidably connected. The right surface of the arc block 25 is fixedly connected with a slider 26. When the cutter body 1 is pulled, the threaded cylinder 21 is driven to move, and the arc block 25 will gradually move. The cylinder 21 gradually contacts the outside of the device. Since the bottom end of the cylinder 21 is small and the top end is large and the diameter is synchronized with the cutter body 1, when the cylinder 21 is pulled, it will gradually contact the inside of the arc block 25, so that the arc block 25 is gradually stretched open. The arc block 25 is penetrated and slidably connected by the support rod 27, and the positioning block 28 is penetrated and slidably connected by the slider 26. A positioning groove 29 is provided on the inside of the positioning block 28. The left side of the scale 210 is fixedly connected to the right side of the positioning block 28. The top surface of the scale 210 is provided with a scale groove 211. The outer edge and the inner edge of the arc block 25 are compared and measured through the scale groove 211 provided on the surface of the scale 210, so that the staff can know the keyway diameter of the workpiece that has been processed by the cutter body 1, so that the cutter body 1 can process the keyway diameter of the workpiece more accurately. There are two groups of arc blocks 25, and the two groups of arc blocks 25 are symmetrically arranged with the center line of the cylinder 21 as the symmetry axis. The support rod 27 passes through the arc block 25, and the other end of the support rod 27 passes through another group of arc blocks 25. A telescopic spring 212 is fixedly connected between the arc blocks 25 and the other group of arc blocks 25. The cross section of the slider 26 is T-shaped, and the positioning groove 29 opened on the inner side of the positioning block 28 is also T-shaped. The arc block 25 is gradually stretched open, and when the arc block 25 is stretched open, it will expand to both sides along the support rod 27 and the square rod 22. When the arc block 25 expands, the arc block 25 will slide along the positioning groove 29 opened on the inner side of the positioning block 28 through the slider 26. The bottom end diameter of the cylinder 21 is small and the top end diameter is large, and the bottom end and the top end of the cylinder 21 have the same diameter as the bottom end and the top end of the knife body 1.
[0026] Based on the above embodiment, when the cutter body 1 is used, the cutter body 1 is passed through the workpiece to be processed, and then the connecting block 3 fixedly connected to the bottom surface of the cutter body 1 is firmly clamped by the device, and the device is started to pull the cutter body 1 through the connecting block 3 to process the workpiece. When the cutter body 1 is pulled, the threaded cylinder 21 is driven to move, and at the same time, the arc block 25 will gradually contact the outside of the device. Since the bottom end of the cylinder 21 is small and the top end is large, and the diameter is synchronized with the cutter body 1, when the cylinder 21 is pulled, it will gradually contact the inner side of the arc block 25, so that the arc block 25 is gradually stretched, and when the arc block 25 is stretched, it will move along the support rod 2. 7 and the square rod 22 expand to both sides. When the arc block 25 expands, the arc block 25 slides along the positioning groove 29 provided on the inner side of the positioning block 28 through the slider 26. The outer edge and the inner edge of the arc block 25 are compared and measured through the scale groove 211 provided on the surface of the scale 210, so that the staff can know the keyway diameter of the workpiece that has been processed by the cutter body 1, so that the cutter body 1 can be more accurate in processing the keyway diameter of the workpiece. At the same time, through the threaded cylinder 21, the measuring part 2 can be removed when not in use and the cutter body 1 can be used directly, and the scale 210 in the measuring part 2 can also be replaced, which is convenient and quick.
[0027] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A broach with a measuring structure, comprising a broach body (1) and a connecting block (3), characterized in that: A measuring part (2) is arranged above the blade body (1), and the measuring part (2) comprises: A cylinder (21), the bottom end of the cylinder (21) is penetrated by the top end of the cutter body (1) and is threadedly connected, a through groove (23) is provided on the side of the cylinder (21), the through groove (23) is penetrated by a square rod (22) and is slidably connected, and one end of the square rod (22) away from the cylinder (21) is fixedly connected to a limiting plate (24); An arc block (25), the arc block (25) is penetrated by the square rod (22) and is slidably connected, a slider (26) is fixedly connected to the right surface of the arc block (25), and the arc block (25) is penetrated by the support rod (27) and is slidably connected; A positioning block (28), the positioning block (28) is penetrated by the slider (26) and is slidably connected thereto, and a positioning groove (29) is formed on the inner side of the positioning block (28); A scale (210), wherein the left side of the scale (210) is fixedly connected to the right side of the positioning block (28), and a scale groove (211) is provided on the top surface of the scale (210).
2. The broach with a measuring structure according to claim 1, characterized in that: The number of the arc blocks (25) is two groups, and the two groups of arc blocks (25) are symmetrically arranged with the center line of the cylinder (21) as the symmetry axis.
3. The broach with a measuring structure according to claim 2, characterized in that: The support rod (27) passes through the arc-shaped block (25), and the other end of the support rod (27) passes through another group of the arc-shaped blocks (25).
4. The broach with a measuring structure according to claim 2, characterized in that: A telescopic spring (212) is fixedly connected between the arc-shaped blocks (25) and the other group of arc-shaped blocks (25).
5. The broach with a measuring structure according to claim 1, characterized in that: The cross section of the sliding block (26) is T-shaped, and the positioning groove (29) provided on the inner side of the positioning block (28) is also T-shaped.
6. The broach with a measuring structure according to claim 1, characterized in that: The bottom end of the cylinder (21) has a smaller diameter and the top end has a larger diameter, and the bottom end and the top end of the cylinder (21) have the same diameter as the bottom end and the top end of the knife body (1).