Polishing and limiting device for caliper sand core
By using a limit column and a detachable stopper in the grinding limit device of the caliper sand core, the problem of dimensional disqualification caused by the position deviation of the sand core is solved, and efficient and accurate sand core grinding is achieved, which is suitable for mass production.
Patent Information
- Application Number
- CN202422592812.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-26
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-26
AI Technical Summary
During the sand core casting process of automobile calipers, the deviation in the placement of the sand core leads to frequent measurement and polishing, which easily leads to dimensional disqualification problems. In addition, the existing polishing method is inefficient and wastes time and materials.
A grinding limit device for caliper sand cores is designed. By setting multiple limit columns and detachable limit blocks on the supporting base plate, the sand core position is ensured to be accurate, a grinding reference is provided, and multiple measurements and repeated grinding are avoided.
It achieves the accuracy and consistency of sand core grinding, improves processing efficiency, reduces parts scrapping, is suitable for processing various types of sand cores, and improves production efficiency and practicality.
Smart Images
Figure CN223353972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand core fixing devices, in particular to a grinding and limiting device for a caliper sand core. Background Art
[0002] Important parts on cars are generally made by casting to ensure their strength.
[0003] Sand casting remains the most common casting process. This involves combining multiple molds, placing sand cores within the mold cavities, and pouring liquid metal into the molds to form the workpiece. Sand casting offers low costs and is highly suitable for mass production. However, the quality of the workpiece is also affected by the shape of the central sand core. If the core dimensions do not meet design requirements, a large number of parts will be scrapped.
[0004] Take automotive calipers, for example. Calipers are typically formed using sand casting. The placement of the sand cores can vary, and they are typically manually measured, polished, and trimmed based on the design dimensions. Grinding methods include, but are not limited to, sandpaper, files, and angle grinders. To ensure adequate dimensions, frequent measurements and repeated polishing are required. However, frequent polishing and measuring can easily lead to over-polishing. If the dimensions are shorter than the design dimensions, the sand cores must be re-prepared, wasting considerable time. Utility Model Content
[0005] In order to overcome the above-mentioned defects, the purpose of the present invention is to provide a grinding limit device for a caliper sand core, which supports the caliper sand core by arranging multiple limit columns on the supporting base plate, facilitates grinding processing, ensures processing dimensions, and is suitable for mass production.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a grinding limit device for a caliper sand core, including a supporting base plate, a plurality of mounting slots are provided on the supporting base plate, and a limiting column is fixed in each of the mounting slots, and the limiting column includes a front limiting column and a rear limiting column, and the front end face of the sand core body abuts against the front limiting column, and the rear end face of the sand core body abuts against the rear limiting column; a first supporting column and a second supporting column are also provided on the supporting base plate, a first limiting block is provided on the top of the first supporting column, and a first clamping slot is provided on the first limiting block; a second limiting block is provided on the top of the second supporting column, and a second clamping slot is provided on the second limiting block.
[0007] Preferably, there are two front limiting posts and two rear limiting posts, which are symmetrically installed on the front and rear sides of the support base plate.
[0008] Preferably, the sand core body is provided with a positioning hole, and the rear limiting column is inserted into the positioning hole.
[0009] Preferably, the first limit stop and the second limit stop are respectively provided with a shoulder limit groove.
[0010] Preferably, the first limit stopper and the second limit stopper are both detachably connected.
[0011] Preferably, the first support column and the second support column are both close to the front limiting column.
[0012] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:
[0013] 1. Since multiple limit columns are set on the supporting base plate to limit the front and rear positions of the sand core body, after ensuring the correct placement, the end faces of the first limit block and the second limit block are used as references respectively. The sand core body can be polished without measurement, and the size after polishing is consistent. There is no problem of unqualified part size due to being too long or too short, and there is no need for repeated measurements, so the efficiency is higher.
[0014] 2. The first limit block and the second limit block are set in a detachable manner. They can be replaced later according to the size requirements and the degree of wear to ensure that the installation position is consistent each time. They can be adapted to various types of sand core bodies, especially the casting of calipers with the same shape but slightly different sizes and models, so they are more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the support base plate and the limiting column of the grinding limiting device of the caliper sand core of the utility model;
[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0017] Figure 3 This is a reference schematic diagram of the use state of the utility model;
[0018] Figure 4 This is a reference diagram of the state of the utility model after some parts are hidden;
[0019] In the figure,
[0020] 1. Support base plate; 11. Mounting slot;
[0021] 2. Limit column; 21. Front limit column; 22. Rear limit column;
[0022] 3. Sand core body; 31. Positioning hole; 32, 33, 34, 35,
[0023] 4. First support column; 41. First limit block; 42. First slot; 43. Shoulder limit slot;
[0024] 5. Second support column; 51. Second limit stopper; 52. Second slot;
[0025] B. End face to be polished. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0027] See also Figures 1-4 The utility model provides a grinding limit device for caliper sand cores, including a supporting base plate 1, a plurality of mounting grooves 11 are provided on the supporting base plate 1, a limiting column 2 is fixed in each mounting groove 11, the limiting column 2 includes a front limiting column 21 and a rear limiting column 22, the front end face of the sand core body 3 abuts against the front limiting column 21, and the rear end face of the sand core body 3 abuts against the rear limiting column 22; the supporting base plate 1 is used for support, and a plurality of mounting grooves 11 are pre-set according to the shape of the sand core body 3 to be processed, and the corresponding front limiting column 21 and rear limiting column 22 are fixed in the mounting groove 11. Generally, in order to facilitate fixation, the models of the front limiting column 21 and the rear limiting column 22 are the same. The automobile caliper will also be provided with a pin for fixation, which can generally be supported and fixed by the first support column 4 and the second support column 5. The support base 1 is also provided with a first support column 4 and a second support column 5. The top of the first support column 4 is provided with a first stopper 41, which is provided with a first retaining groove 42. The top of the second support column 5 is provided with a second stopper 51, which is provided with a second retaining groove 52. The polishing area is primarily located between the first and second stoppers 41, 51. After the sand core body 3 is placed, it is manually polished according to the extension distance until the end surface B to be polished is flush with the end surface of the corresponding first or second stopper 41, 51.
[0028] The utility model has two front limit columns 21 and two rear limit columns 22, which are symmetrically installed on the front and rear sides of the support base plate 1. In order to ensure stable installation and ensure that the sand core body 3 does not shake during grinding, there are two front limit columns 21 and two rear limit columns 22. At the same time, the sand core body 3 is provided with a positioning hole 31, and the rear limit column 22 is inserted into the positioning hole 31. When placing, first place the rear limit column 22 in the corresponding positioning hole 31, and then support it through the first limit column and the second limit column. At this time, the shoulder limit groove 43 in the first card slot 42 should be against the shoulder of one of the sand core bodies 3, and the shoulder limit groove 43 in the second card slot 52 should be against the shoulder of the other sand core body 3. After the position is accurately positioned, it can be ground as needed.
[0029] The first and second limit blocks 41, 51 of the present invention are both detachably connected. Grinding is typically done with a file, but frequent grinding can easily cause scratches on the end surfaces, resulting in uneven surfaces. These blocks can be replaced as needed. If the design dimensions change, the first and second limit blocks 41, 51 can be replaced as needed.
[0030] In this embodiment, both the first and second support columns 4 and 5 are located close to the front limit column 21. To maintain proper dimensions, only one end face is typically polished. In this embodiment, the polishing position is at the front end, specifically the end face B shown. This increased distance prevents the core body 3 from shaking or tilting during polishing, providing greater stability and improved operational safety.
[0031] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.
Claims
1. A grinding limit device for a caliper sand core, characterized in that: The sand core body includes a support base plate, a plurality of mounting grooves are provided on the support base plate, a limiting column is fixed in each of the mounting grooves, and the limiting columns include a front limiting column and a rear limiting column. The front end surface of the sand core body abuts against the front limiting column, and the rear end surface of the sand core body abuts against the rear limiting column. The support base is also provided with a first support column and a second support column. The top of the first support column is provided with a first limit block, and the first limit block is provided with a first slot; the top of the second support column is provided with a second limit block, and the second limit block is provided with a second slot.
2. The grinding and limiting device for the caliper sand core according to claim 1, characterized in that: There are two front limiting posts and two rear limiting posts, which are symmetrically installed on the front and rear sides of the supporting base plate.
3. The grinding and limiting device for the caliper sand core according to claim 2, characterized in that: The sand core body is provided with a positioning hole, and the rear limiting column is inserted into the positioning hole.
4. The grinding and limiting device for the caliper sand core according to claim 3, characterized in that: The first limit stopper and the second limit stopper are respectively provided with a shaft shoulder limit groove.
5. The grinding and limiting device for the caliper sand core according to claim 4, characterized in that: The first limit stopper and the second limit stopper are both detachably connected.
6. The grinding and limiting device for the caliper sand core according to claim 5, characterized in that: The first support column and the second support column are both close to the front limiting column.