Point marking device for mechanical property test
By designing the clamping device and adjustable tap gear structure, the skew and inconsistency of the hand-held tap gear device are solved, and efficient and precise taping of multi-spec punctuation is achieved, expanding the scope of application and reducing costs.
Patent Information
- Application Number
- CN202422253324.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing handheld dot handling device is prone to skew during dot handling, and the dot handling force is not easy to be unified. It also requires multiple sizes of dot drills to meet different spacing requirements, which is costly.
A punctuation device including a clamping device, a dot gear and a door shaped bracket is designed. The sample is fixed by the clamping device, and the dot gear slides and dot points on the bracket, and the dot gears with different tooth pitches can be replaced. Combined with the support column and the sliding structure to adjust to different samples, an alloy wear-resistant head is provided on the dot gear.
It achieves uniform and equidistant points, wide application scope, improves test accuracy and applicability, and reduces costs.
Smart Images
Figure CN223091678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical property testing of metal materials, and particularly relates to a punctuation device for mechanical property testing. Background Art
[0002] In the tensile property testing experiment of metal specimens, it is necessary to evenly punch dots on the metal samples before testing, and after stretching, the tensile property of the metal specimens is judged by measuring the change in the distance between two points.
[0003] Currently, there are mainly two types of dotting devices. One type includes multiple dotting heads and can punch a relatively large number of dots at one time. However, this type of dotting device has problems such as a large number of dotting heads, difficult maintenance, and high calibration costs. The other type is a handheld U-shaped dotting drill. The operator holds the dotting drill to punch two points at one time. The problems of this type of dotting device are large errors during dotting, easy skew when dotting in a row, and inconsistent dotting force. In addition, the distance between two points of this type of dotting device is fixed, and only one spacing of punctuation can be punched. When different spacings of punctuation are required, different sizes of dotting drills need to be equipped, resulting in high costs. Content of the Utility Model
[0004] The utility model aims to provide a punctuation device for mechanical property testing to solve the problems that the existing handheld dotting device is prone to skew and the dotting force is not easy to be unified during dotting.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] A punctuation device for mechanical property testing includes a clamping device, a dotting gear, and a U-shaped bracket. The bracket straddles the clamping device and both ends of the bracket are slidably connected to the clamping device. The clamping device is used to clamp the sample. The dotting gear is rotatably installed on the bracket, and a number of dotting teeth for pressing punctuation on the sample are evenly arranged on the dotting gear.
[0007] Preferably, as an improvement, the clamping device includes a base, a clamping groove is formed on the base, two clamping plates are slidably arranged on both sides in the clamping groove, the clamping plates are rotatably connected with a clamping screw, and the clamping screw is threadedly connected with the base.
[0008] Preferably, as an improvement, the bracket includes two vertical support columns and a connecting shaft perpendicularly and fixedly connected between the tops of the support columns. The dotting gear is rotatably connected to the connecting shaft through a bearing.
[0009] Preferably, as an improvement, the support column includes a bottom column and a top column slidably sleeved on the bottom column. A strip-shaped hole is vertically formed on the top column, an adjusting screw is fixed on the bottom column, the adjusting screw passes through the strip-shaped hole, and a locking nut is threadedly connected to the adjusting screw.
[0010] Preferably, as an improvement, scales are provided on the bottom column.
[0011] Preferably, as an improvement, dovetail-shaped chutes are provided on both sides of the base along its length direction. A slide bar is vertically connected to the bottom of the support column, and a dovetail-shaped slider is fixed to the free end of the slide bar. The slider is slidably connected in the chute.
[0012] Preferably, as an improvement, a handle is also vertically fixed to the outer side of the bottom of the support column.
[0013] Preferably, as an improvement, an alloy wear-resistant head is fixed to the tip of the dotting tooth.
[0014] The principle and beneficial effects of this solution are as follows:
[0015] 1. In this solution, the sample is fixed in the clamping groove, the height of the dotting gear is adjusted so that the dotting teeth on it can contact the surface of the sample, and then the bracket and the dotting gear are pushed to move along the base, which can drive the dotting gear to roll along the surface of the sample, and evenly punch out uniform and equidistant dots on the surface of the sample. Since the sample is fixed and the dotting gear slides along the base, the problem of skewed punctuation marks will not occur; in addition, using the dotting gear for dotting can perform continuous dotting, punch out multiple dots at one time, and the spacing between the dots is the same and the dotting force is consistent, with good dotting accuracy, thereby improving the accuracy of the sample tensile test.
[0016] 2. By providing a clamping groove on the base, a clamping plate is provided in the clamping groove, and the clamping screw is rotated to drive the clamping plate to move in the clamping groove. This design can clamp samples of different sizes and shapes, with a wide range of applications.
[0017] 3. The dotting gear is rotatably mounted on the connecting shaft through a bearing. In actual use, dotting gears with different tooth pitches can be replaced, so as to punch punctuation marks with different spacing specifications, with a wide range of applications.
[0018] 4. Adopting a support column structure with a bottom column and a top column slidably sleeved on the bottom column facilitates adjusting the length of the support column, thereby adjusting the position height of the dotting gear to adapt to dotting samples of different thicknesses, further expanding the scope of application. When adjusting the length of the support column, loosen the locking nut, slide the top column to the required position, the adjusting screw slides in the strip hole, and then tighten the locking nut after adjustment. The structure is simple and the adjustment is convenient. The scales provided on the bottom column are convenient for fine adjustment and improve the adjustment accuracy.
[0019] 5. By sliding the slider in the chute, the stable sliding of the bracket can be realized, thereby improving the stable rolling of the dotting gear, and further improving the stability and force balance of dotting.
[0020] 6. In this solution, an alloy wear-resistant head is fixed at the tip of the dotting tooth, which can improve the strength and wear resistance of the dotting tooth, prevent the dotting area from becoming larger due to the wear of the dotting tooth, and thus avoid the problem of large errors when measuring the dot spacing subsequently, which affects the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is the front view of the embodiment of the present utility model.
[0022] Figure 2 It is the top view of the embodiment of the present utility model.
[0023] Figure 3 It is a partial side view of the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following is a more detailed description through specific embodiments:
[0025] The reference numerals in the attached drawings of the specification include: base 1, chute 11, clamping groove 12, clamping plate 13, clamping screw 14, dotting gear 2, dotting tooth 21, support column 3, bottom column 31, top column 32, connecting shaft 33, strip hole 34, adjusting screw 35, locking nut 36, handle 37, sliding rod 38, slider 39.
[0026] Embodiment 1:
[0027] As Figure 1 , Figure 2 and Figure 3 shown, a punctuation device for mechanical property testing includes a clamping device, a dotting gear 2 and a U-shaped bracket. The bracket straddles the clamping device. The bracket includes two vertical support columns 3 and a connecting shaft 33 vertically and threadedly connected between the tops of the support columns 3. The dotting gear 2 is rotatably connected to the connecting shaft 33 through a bearing. A plurality of dotting teeth 21 are integrally formed on the dotting gear 2, and an alloy wear-resistant head (not shown in the figure) is welded and fixed at the tip of the dotting tooth 21. The support column 3 includes a bottom column 31 and a top column 32 slidably sleeved on the bottom column 31. A strip hole 34 is vertically opened on the top column 32. An adjusting screw 35 is welded and fixed on the bottom column 31. The adjusting screw 35 passes through the strip hole 34, and a locking nut 36 is threadedly connected to the adjusting screw 35. Dovetail-shaped chutes 11 are opened on both sides of the base 1 along its length direction. A sliding rod 38 is vertically welded to the bottom of the support column 3. A dovetail-shaped slider 39 is welded to the free end of the sliding rod 38. The slider 39 is slidably connected in the chute 11. A handle 37 is vertically fixed to the outside of the bottom of the support column 3 by bolts.
[0028] The clamping device includes a base 1. There is a clamping groove 12 in the middle of the base 1. On both sides inside the clamping groove 12, clamping plates 13 are slidably installed. Both of the two clamping plates 13 are rotatably connected to clamping screws 14. Both of the two clamping screws 14 are threadedly connected to the base 1 and pass through the side surface of the base 1.
[0029] The working principle of a punctuation device for mechanical property testing is as follows:
[0030] 1. Place the sample flat in the clamping groove 12 so that the sample is located in the middle of the clamping groove 12. Rotate the two clamping screws 14 respectively to drive the two clamping plates 13 to move towards the middle of the clamping groove 12 until the two clamping plates 13 clamp the sample from both sides, thus completing the fixation of the sample.
[0031] 2. Loosen the lock nuts 36 and adjust the position of the top column 32 relative to the bottom column 31, thereby adjusting the position height of the dotting gear 2 until the dotting teeth 21 on the dotting gear 2 can contact the surface of the sample. During the adjustment process, the adjusting screw 35 slides in the strip hole 34 on the top column 32, which can play a guiding role in the adjustment of the top column 32. After the adjustment is in place, tighten the two lock nuts 36 to fix the top column 32, thereby fixing the dotting gear 2.
[0032] 3. Hold the handle 37 and push the whole bracket and the dotting gear 2 to slide along the base 1 from left to right. Since the dotting gear 2 is rotatably installed on the bracket, when the dotting gear 2 slides to contact the surface of the sample, it can roll on the surface of the sample, thereby punching continuous and uniform punctuation marks on the surface of the sample through the dotting teeth 21. In this embodiment, the sample is a metal sample, such as aluminum alloy, and the depth of the punched punctuation marks is about 0.5 mm. On the basis of making the punctuation marks clear, it will not cause the dotting gear 2 to get stuck.
[0033] In this embodiment, the sample is fixed in the clamping groove 12, and the dotting gear 2 is driven to roll along the base 1 to punch dots on the sample. The punched dots are continuous and uniform, and the depth of dotting is consistent. In actual use, different pitch dotting gears 2 can be installed to punch punctuation marks with different pitch specifications. When the bracket slides along the base 1, the slide bar 38 at the bottom of the bracket slides along the slideway, and the slider 39 on the slide bar 38 slides in the chute 11, which can effectively guide the bracket, thereby improving the sliding stability of the bracket and the dotting gear 2, and further avoiding problems such as inconsistent dotting depth and skewed dotting path caused by the instability (such as jitter) of the dotting gear 2.
[0034] Embodiment 2:
[0035] The difference between this embodiment and Embodiment 1 is that scales are drawn on the bottom column 31. Setting scales on the bottom column 31 facilitates fine adjustment of the top column 32, thereby more accurately adjusting the position height of the dotting gear 2 and improving the adjustment accuracy.
[0036] The above are only the embodiments of the present utility model. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several modifications and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.
Claims
1. A punctuation device for mechanical property testing, characterized in that: It includes a clamping device, a dotting gear and a portal-shaped bracket. The bracket straddles the clamping device and both ends of the bracket are slidably connected to the clamping device. The clamping device is used to clamp a sample. The dotting gear is rotatably installed on the bracket, and a number of dotting teeth for pressing punctuation marks on the sample are evenly arranged on the dotting gear.
2. The punctuation device for mechanical property testing according to claim 1, characterized in that: The clamping device includes a base, a clamping groove is formed in the base, clamping plates are slidably arranged on both sides in the clamping groove, the clamping plates are rotatably connected with clamping screws, and the clamping screws are threadedly connected with the base.
3. The punctuation device for mechanical property testing according to claim 2, characterized in that: The bracket includes two vertical support columns and a connecting shaft vertically and fixedly connected between the tops of the support columns. The dotting gear is rotatably connected to the connecting shaft through a bearing.
4. A punctuation device for mechanical property testing according to claim 3, characterized in that: The support column includes a bottom column and a top column slidably sleeved on the bottom column. A strip-shaped hole is vertically formed in the top column, an adjusting screw is fixed on the bottom column, the adjusting screw passes through the strip-shaped hole, and a locking nut is threadedly connected to the adjusting screw.
5. The punctuation device for mechanical property testing according to claim 4, wherein: A scale is arranged on the bottom column.
6. The punctuation device for mechanical property testing according to claim 5, wherein: Dovetail-shaped sliding grooves are formed on both sides of the base along its length direction. A sliding rod is vertically connected to the bottom of the support column, and a dovetail-shaped slider is fixed at the free end of the sliding rod. The slider is slidably connected in the sliding groove.
7. A punctuation device for mechanical property testing according to claim 6, characterized in that: A handle is also vertically fixed on the outer side of the bottom of the support column.
8. A punctuation device for mechanical property testing according to claim 7, characterized in that: An alloy wear-resistant head is fixed at the tip of the dotting tooth.